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EP2888954B2 - Spreading device for two or more webs of wrapping material for producing at least two parallel rods of products for the tobacco industry and a machine with said spreading device - Google Patents

Spreading device for two or more webs of wrapping material for producing at least two parallel rods of products for the tobacco industry and a machine with said spreading device Download PDF

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Publication number
EP2888954B2
EP2888954B2 EP14184043.9A EP14184043A EP2888954B2 EP 2888954 B2 EP2888954 B2 EP 2888954B2 EP 14184043 A EP14184043 A EP 14184043A EP 2888954 B2 EP2888954 B2 EP 2888954B2
Authority
EP
European Patent Office
Prior art keywords
wrapping material
spreading device
pivot
material web
coupling bars
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14184043.9A
Other languages
German (de)
French (fr)
Other versions
EP2888954B1 (en
EP2888954A1 (en
Inventor
Frank Grothaus
Franz Hartmann
Tim Simon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Priority to PL14184043T priority Critical patent/PL2888954T5/en
Publication of EP2888954A1 publication Critical patent/EP2888954A1/en
Publication of EP2888954B1 publication Critical patent/EP2888954B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/20—Reels; Supports for bobbins; Other accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
    • B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
    • B65H23/0251—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a straight axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/30—Supports; Subassemblies; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/54—Cigarette making

Definitions

  • the invention relates to a spreading device for two or more wrapping material webs for the production of at least two parallel strands of products of the tobacco processing industry with the features of the preamble of claim 1 and a system with a spreading device with the features of the preamble of claim 17.
  • a spreading device for two or more wrapping material webs for the production of at least two parallel strands of products of the tobacco processing industry with the features of the preamble of claim 1 and a system with a spreading device with the features of the preamble of claim 17.
  • Such a device is the end EP-A-0 309 818 known.
  • both the strand-like filter material and the strand of loose tobacco fibers are fixed by means of a sheet of wrapping material.
  • a wrapping material web of multiple, in particular double, widths is first unwound from a reel and cut into two or more wrapping material webs aligned parallel to one another in a continuous cutting process.
  • the cutting device is formed by a pull-cutting roller assembly in which the multiple-width wrapping material web is cut into two or more wrapping material webs of identical width.
  • the parallel wrapping material webs are then offset parallel to one another by means of a spreading device, so that they then run parallel and at a distance from one another. This is necessary in particular because the strands then also run in the strand forming unit at a distance and parallel to one another.
  • Such a spreading device which comprises a number of deflection roller groupings corresponding to the number of wrapping material webs, each of which is traversed by a wrapping material web in such a way that the wrapping material web is deflected when entering the bottom of the first deflecting roller and then on the top of the second deflecting roller.
  • the deflection rollers are inclined relative to the deflected wrapping material webs, so that the wrapping material webs are laterally offset in parallel during the deflection.
  • the spreading distance of the wrapping material webs after passage can be changed by adjusting the height of the second deflection rollers.
  • the deflection roller groupings each comprise two deflection rollers, which are each arranged in pairs on a common support frame.
  • the spreading distance of the wrapping material webs is changed in this solution in that the support frame is pivoted together with the deflection rollers about an axis of rotation running parallel to the feed direction through the center of the first deflection roller.
  • the deflection rollers are mounted free-floating on one side, so that the wrapping material webs can be threaded into the deflection roller groupings from the side of the free ends of the deflection rollers.
  • the deflection rollers of the deflection roller groupings through which the wrapping material webs pass are arranged in relation to one another in such a way that the free ends of the deflection rollers face one another and are spaced apart from one another.
  • both wrapping material webs can be threaded into the deflection roller groupings between the deflection rollers.
  • the invention is based on the object of providing a spreading device or a system with a spreading device, in which the threading of the wrapping material webs is easier to handle.
  • the threading process of the wrapping material webs can be considerably simplified by the arrangement of the deflection roller groupings offset in the transport direction, since the access is considerably simplified.
  • the wrapping material webs are introduced into the deflection roller grouping offset in relation to the transport direction and laterally offset in parallel in the deflecting roller groupings.
  • the wrapping material webs run from the point at which the first wrapping material web enters the first deflection roller grouping to the point in which the last wrapping material web from the deflection roller grouping emerges, the same distance, so that no stresses are introduced into the advance of the wrapping material webs.
  • the parallel lateral offset of the wrapping material webs can be designed to be much more individual than was possible with a conventional spreading device with oppositely arranged deflection roller groups. In the extreme case, it would even be conceivable to offset the wrapping material webs on top of one another so that they then at least partially overlap in an edge section.
  • the deflection roller groupings are arranged one above the other in the manner of a terrace.
  • the proposed arrangement makes the pulley groupings accessible from the side in a particularly simple and easy-to-use manner for threading the wrapping strip.
  • the threading in is particularly easy if the deflection rollers are mounted free-floating on one side, so that the guide track for the wrapping strip is open on the side.
  • the deflection rollers in each case of a deflection roller grouping have an identical diameter and an identical relative angle to one another.
  • the first and the second deflection rollers of a deflection roller grouping accordingly have an identical diameter and are each aligned with the incoming wrapping material web in such a way that the deflection rollers of the individual deflection roller groupings have an identical relative angle to one another, ie the relative angle between the respective first deflection roller and the respective second deflection roller of the different pulley groupings is identical in each case.
  • the relative angle is the angle difference between the longitudinal axes or axes of rotation of the deflection rollers of a deflection roller grouping in the projection in the transport direction, which is the cause of the lateral offset of the wrapping material webs, so that this is also identical in the result for the individual deflection roller groupings.
  • the advantage of the proposed solution is that the deflection and the change in angle of the wrapping material web caused by the relative angle between the inlet section and the outlet section on the deflection rollers of the different deflection roller groupings are identical.
  • the deflection is also dependent on the diameter of the deflection rollers, which is also identical due to the identical diameter.
  • the distances between the deflection rollers in each of the deflection roller groupings are identical for the different deflection roller groupings.
  • the distance covered by the wrapping material webs when passing through the pulley groupings is identical, so that no additional stresses are introduced into the wrapping material webs by the spreading device, namely neither in the leading nor in the trailing edge of the wrapping material webs.
  • the pulley groupings are identical and designed or aligned with mirror symmetry, so that the wrapping material webs are laterally offset by an identical distance.
  • the feed and discharge directions of the wrapping material webs towards and away from the deflection roller groupings are aligned parallel to one another. Due to the parallel alignment of the wrapping material webs in the feed and the discharge direction, the wrapping material web run can be made even more uniform, in that the parallel run of the wrapping material webs further reduces the likelihood of stresses occurring in the wrapping material webs. As a result, the course of the wrapping material webs can be controlled particularly precisely, which is particularly advantageous for controlling the edge position of the wrapping material webs.
  • deflection roller groupings can each be pivoted about a pivot axis running through the wrapping material web resting on the first deflection roller.
  • the pivot axis lies exactly in the longitudinal center line of the wrapping material web, so that the wrapping material web is pivoted laterally to the center line by the same angle and in the same width when the deflection roller grouping is adjusted.
  • the deflection roller groupings are each adjustable by means of an adjusting device formed by a multi-joint mechanism. Due to the multi-joint mechanism, the entire group of deflection rollers can be pivoted particularly easily about the virtual pivot axis arranged in the wrapping material web, with the adjustment movement of a linear drive device also being able to be converted into a pivot movement in a particularly simple manner. This can be achieved in a particularly simple manner in that the multi-joint mechanism which transmits the adjustment movement has a forced guidance which defines the pivot axis. The positive guidance is formed by various joints which, through their spacing from one another, specify the sequence of movements during the pivoting movement.
  • the multi-joint mechanism transmitting the adjustment movement is preferably mounted with two first coupling rods in two stationary pivot bearings, the stationary pivot bearings preferably being arranged in such a way that their pivot axes lie on a straight line which runs through the wrapping material web adjacent to the first deflection roller.
  • first coupling rods are preferably coupled to one another via at least two second coupling rods, each of which has a support plate at its ends a pivot bearing is pivotally mounted, wherein the pulleys are arranged on the support plate.
  • the second coupling rods are each mounted in pivot bearings opposite the first coupling rods, and at least the pivot bearings closest to the stationary pivot bearings are arranged between the first and second coupling rods in such a way that they are at a distance from the stationary pivot bearings perpendicular to the transport direction of the wrapping material web have, which corresponds to the distance between the pivot axis of the wrapping material web and the closest pivot bearing between the support plate and one of the second coupling rods perpendicular to the transport direction of the wrapping material web.
  • the distance between the pivot axis and the closest pivot bearing between the support plate and one of the second coupling rods perpendicular to the transport direction of the wrapping material web is the distance between the stationary pivot bearings and the closest pivot bearings between the coupling rods and the distance between the pivot axis and the closest one Pivot bearing between the support plate and one of the second coupling rods corresponds to the transport direction of the wrapping material web.
  • the second coupling rods are each mounted in pivot bearings opposite the first coupling rods, and the distance between the pivot bearings of the second coupling rods corresponds to the distance between the stationary pivot bearings.
  • the second coupling rods are each mounted in pivot bearings opposite the first coupling rods, and the distance between the stationary pivot bearing closest to the pivot axis of the wrapping material web and the pivot axis of the wrapping material web is the distance between the pivot bearing between the support plate and one of the second coupling rods, which is closest to the pivot axis, corresponds to the pivot bearing between one of the first and second coupling rod, which is arranged closest to the stationary pivot bearing.
  • the proposed arrangement of the swivel bearings and the dimensioning of the distances between the swivel bearings enables the wrapping material web to be swiveled about a swivel axis running in the wrapping material web, which enables the edge position of the wrapping material web to be controlled very precisely with very little tension in the leading and trailing edge of the wrapping material web can be.
  • this can prevent the wrapping material web from running laterally on the deflecting roller during the pivoting so far that the pivot axis of the wrapping material web runs outside the wrapping material web.
  • the deflection roller groupings are adjustable by means of a drive device coupled to the second coupling rods.
  • the proposed solution is advantageous in that the drive device can thereby be arranged and fastened at a distance from the deflection roller groupings without this having disadvantages for the adjustment accuracy, since the second coupling rods are connected directly to the support plates on which the deflection rollers are held .
  • a system with a spreading device according to claim 15 is proposed to achieve the object, the system having a partition, the spreading device extending through the partition, and the deflection roller groupings on an operator side of the partition, and the drive device being arranged on a drive side of the partition are.
  • the proposed partition and the arrangement of the pulley groupings can protect the operator from unintentional interference with the drive devices and the associated gear mechanism for transmitting the drive movement, e.g. while threading the wrapping material webs.
  • the drive device, the gear mechanism and the corresponding part of the multi-joint mechanism can be protected from external mechanical influences on the part of the operator. For the operator, only the pulley groupings for threading the wrapping material webs are deliberately accessible.
  • the partition has recesses, and the multi-joint mechanism extends through the recesses of the partition with the second coupling rods, and the first coupling rods of the multi-joint mechanism are arranged on the drive side and the support plates of the multi-joint mechanism are arranged on the operator side of the partition.
  • a spreading device can be seen schematically from the side.
  • a wrapping material web 1 of multiple, in this case double, width is fed to the spreading device from a reel, not shown, and is cut in a pull-cutting roller grouping 10 into two parallel wrapping material webs 2 and 3 of single width.
  • the wrapping material webs 2 and 3 immediately adjacent to one another after cutting are then fed to two deflection roller groups 4 and 5 arranged offset from one another in the transport direction of the wrapping material webs 2 and 3.
  • the wrapping material web 2 at the front in the illustration is first introduced into the first deflection roller grouping 4, and at the top of the first deflection roller 6 down to the underside of the second deflection roller 8 and then again from the underside of the second deflection roller 8.
  • the feed directions I and III of the wrapping material webs 2 and 3 and the discharge directions II and IV are both in the vertical plane of the representation of the Fig. 1 as well as in the horizontal plane of the representation of the Fig. 2 aligned parallel to each other.
  • the second rear wrapping material web 3 is only deflected in a second deflection roller grouping 5 with two deflection rollers 7 and 9 after it has covered a distance, that is to say offset in the transport direction.
  • the two deflecting rollers 7 and 9 of the second deflecting roller grouping 5 and the two deflecting rollers 6 and 8 of the first deflecting roller grouping 4 are aligned at an identical distance from one another and have an identical diameter.
  • first deflection rollers 6 and 7 and the second deflection rollers 8 and 9 are each aligned at an identical relative angle to one another, so that the wrapping material webs 2 and 3 cover the same distance when passing through the deflection roller groupings 4 and 5 and the same distance when the deflection roller groupings are mirror-symmetrical be offset laterally in parallel.
  • the wrapping material webs 2 and 3 are each deflected twice in the deflection roller groupings 4 and 5, and pivoted in opposite directions due to the inclinations of the deflection rollers 6, 7, 8 and 9.
  • the angles of the pulleys 6, 7, 8 and 9 to the wrapping material webs are selected so that the wrapping material webs are each offset outwards by approximately the same amount, so that the distance between the wrapping material webs 2 and 3 is then the sum of the lateral offset movements, and in the ideal case, in the case of a symmetrical offset movement, this corresponds to the double offset movement of a wrapping material web 2 or 3.
  • the angles of the first deflection rollers 6 and 7 and the second deflection rollers 8 and 9 are aligned mirror-symmetrically to one another in pairs, so that in the basic position of the spreading device there is an identical offset of the wrapping material webs 2 and 3 outwards, i.e. perpendicular to the transport direction.
  • the wrapping material webs 2 and 3 are guided past a sensor device 11 that senses the edge position and then introduced via a threading device 12 into a strand forming unit (not shown) in which, for example, a strand of loose tobacco fibers is applied to the wrapping material webs 2 and 3 is launched.
  • Fig. 2 is the spreader from the Fig. 1 visible from above.
  • the multiple-width wrapping material web 1 is cut in the pull-cutting roller grouping 10 into two parallel single-width wrapping material webs 2 and 3. After cutting, the wrapping material webs 2 and 3 are fed diagonally towards the viewer in the illustration.
  • the wrapping material web 2 which is lower in the illustration, is introduced into the first deflection roller grouping 4 and deflected on the upper side of the first deflection roller 6 to the underside of the second deflection roller 8.
  • the upper wrapping material web 3 is offset in the transport direction, that is, after having covered a short distance on the first deflection roller 7 of the second deflection roller group 5, it is deflected again on the upper side of the first deflection roller 7 to the underside of the second deflection roller 9.
  • the angles A of the first deflection rollers 6 and 7 to the feed directions I and III and the angles B of the second deflection rollers 8 and 9 to the discharge directions II and IV of the wrapping material webs 2 and 3 are each identical, so that the feed and discharge directions I.
  • wrapping material webs 2 and 3 are also deflected around the circumferences of the deflection rollers 6,7,8 and 9 by the same circumferential angle, the wrapping material webs 2 and 3 are also in the feed direction I and III and the discharge direction II and IV in the side view of Fig. 1 aligned parallel to each other.
  • the pulley groupings 4 and 5 are offset from one another in relation to the transport direction of the wrapping material webs 2 and 3, so that they are arranged one above the other in a terrace-like manner due to the inclined upwardly directed course of the wrapping material webs 2 and 3. Since the pulley groupings 4 and 5 are offset from one another, the wrapping material webs 2 and 3 can be introduced laterally much more easily, since the pulley groupings 4 and 5 are now accessible from the side. The improved accessibility is achieved in particular by the terrace-like arrangement of the pulley groupings 4 and 5, since the pulley groupings 4 and 5 thereby laterally no longer cover.
  • the terrace-like arrangement is achieved here by a correspondingly large deflection of the wrapping material web 2 at the first deflection roller 6 of the first deflection roller grouping 4 in the circumferential direction and by correspondingly dimensioning the distance covered by the second wrapping material web 3 before entering the second deflection roller grouping 4.
  • the pulleys 6, 7, 8 and 9 in the pulley groupings 4 and 5 are each mounted free-floating on one side, so that the guideways of the wrapping material webs 2 and 3 in the pulley groupings 4 and 5 are open at the sides, and the wrapping material webs 4 and 5 are very easily pushed in laterally can be.
  • the adjustment mechanism is formed by a multi-joint mechanism, which in the Fig. 3 can be seen from different views.
  • the multi-joint mechanism comprises a plurality of coupling rods 14, 15, 16, 17 and 29, which are pivotably connected to one another in joints 23, 24, 25 and 26. Furthermore, the multi-joint mechanism is fastened with the ends of the coupling rods 14, 15 and 29 in pivot bearings 27 and 28 on a holder 18 fixed to the machine.
  • the deflection rollers 6 and 8 are mounted on one side so as to be free-floating on a support plate 20, which in turn is held pivotably at the free ends of the coupling rods 16 and 17. Furthermore, a linear drive device 19 is provided which is connected to the end of the support plate 20 which is remote from the first deflection roller 6.
  • the multi-joint mechanism is designed and in particular has such a forced guidance that the linear drive movement of the drive device 19 is converted into a pivoting movement of the entire multi-joint mechanism with a pivot axis C tangent to the surface of the first deflection roller 6.
  • the angle of the deflecting rollers 6 and 8 can be changed relative to the wrapping material web 2 deflected thereon, the pivot axis C ideally lying in the wrapping material web 2, preferably in the central longitudinal axis of the wrapping material web 2, so that despite the pivoting of the first deflecting roller 6 there are no tensions in the wrapping material web 2 and also no stresses are introduced into the multiple width wrapping material web 1 in advance. So that the pivot axis C is tangent to the surface of the deflecting roller 6, it is important that the center points of the pivot bearings 27 and 28 on the machine-fixed holder 18 are arranged on a straight connecting line tangent to the surface of the deflecting roller 6.
  • the straight line connecting the center points of the pivot bearings 27 and 28 does not run tangentially through the surface of the deflection roller 6 after pivoting, but instead approximately through the pivot axis C.
  • the pivot bearings 27 and 28 on the holder 18 must be as follows be arranged so that the distances D of the centers of the pivot bearings 27 and 28 from the centers of the pivot bearings 23 and 25 in the projection in the direction of the connecting straight line correspond to the distance D between the center of the pivot bearing 22 and the pivot axis C in the direction of the connecting straight line.
  • deflection roller groups 4 and 5 can be pivoted independently of one another, while a common adjusting device would also be conceivable for a pure change in the spreading distance.
  • the feed directions I and III of the wrapping material webs 2 and 3 are shown in FIG Fig. 2 can be seen from above by the dashed lines, which in this case are at the same time the center lines of the wrapping material webs 2 and 3.
  • the center lines of the wrapping material webs 2 and 3 run parallel to one another and are spaced apart from one another corresponding to the single width of the wrapping material webs 2 or 3.
  • the wrapping material webs 2 and 3 are laterally offset outwards so that they are then aligned parallel to one another at a greater distance, which can be seen by the dashed lines of the discharge directions II and IV.
  • the deflection roller groupings 4 and 5 have deflection rollers 6 and 8 or 7 and 9 with an identical distance from one another, an identical diameter and an identical relative angle to one another.
  • the wrapping material webs 2 and 3 in the deflection roller groupings 4 and 5 run an identical distance, and are offset symmetrically outwards by the same distance apart from the offset in the transport direction with an identical mirror-symmetrical alignment of the deflection roller groupings 4 and 5.
  • Fig. 4 the required distances of the pivot bearings 27,28,21,22,23,24,25 and 26 to each other and to the pivot axis C of the wrapping material web 2 are shown in more detail, which must be observed so that the forced guidance in a linear adjustment movement to pivot the wrapping material web 2 around the pivot axis C.
  • the distances are described below in the position of the non-pivoted deflection roller grouping, ie the coupling rods 14 and 15 or 16 and 17 are aligned in pairs parallel to one another, and the first coupling rods 14, 15 are aligned perpendicular to the second coupling rods 16, 17.
  • the following described Distances relate in each case to the pivot centers or the pivot axes of the pivot bearings 27, 28, 21, 22, 23, 24, 25 and 26, which correspond to the center axis of the bearing pin in the case of a journal bearing. If another type of pivot bearing is to be implemented, the distances must instead be related to the pivot center of the pivot bearing. To simplify the understanding of the invention, the distances are only generally defined as the distances between the pivot bearings 27, 28, 21, 22, 23, 24, 25 and 26, which actually mean the respective pivot axes.
  • the one already in the Fig. 3 Distance D described should correspond approximately to the width of the wrapping material web 2 or 3 to be pivoted.
  • the distance E between the centers of the pivot bearings 22, 23 and 25 in the transport direction of the wrapping material webs 2 and 3 should approximately correspond to the distance D.
  • the distances D and E are thus approximately 30 mm.
  • the distance F of the center points of the pivot bearings 21, 24, 26 to the centers of the pivot bearings 22, 23 and 25 should be significantly greater than the distance E, in particular the distance F should be 4 to 10 times as large as the distance E.
  • the distances G between the centers of the pivot bearings 21 and 24 and between the center of the pivot bearing 27 and the pivot axis C in the projection perpendicular to the transport direction of the wrapping material webs 2 and 3 should be identical and approximately 1.5 times the distance D.
  • the distance H between the centers of the pivot bearings 23 and 25 should also be identical to the distance, also identified as H, between the centers of the pivot bearings 27 and 28, which should also be approximately twice the distance D.
  • one of the pivot bearings 23, 24, 25 or 26 can be omitted, with the omission of the pivot bearing 26 being particularly useful.
  • additional stability and rigidity can also be introduced into the multi-joint mechanism. Since the adjustment movements tend to be seen at smaller adjustment angles, the increased rigidity is not a disadvantage for the adjustment movement.
  • the proposed solution can ensure that the pivot axis C of the wrapping material web 2 remains in the wrapping material web 2 during the pivoting of the deflection roller grouping 4 and does not run out of it.
  • the deflection roller 6 with the adjacent wrapping material web 2 and the pivot axis C arranged therein can be moved slightly in the transport direction or against the transport direction of the wrapping material web 2.
  • the pivot axis C in the wrapping material web 2 can also wander slightly laterally out of the longitudinal center axis of the wrapping material web. It is only important that the pivot axis C remains in the wrapping material web 2 so that stresses are only introduced into the leading and trailing of the wrapping material web 2 in a negligible order of magnitude.
  • the edge position of the wrapping material web 2 can be regulated much more precisely and the wrapping material web run is much smoother and more controlled.
  • the distances D are identical and the distances E identical so that the pivot axis C of the adjustment movement runs approximately in the wrapping material web 2 or 3 resting on the first deflection rollers 6 and 7.
  • the radius of the adjustment movement corresponds to the distance between the pivot bearings 25 and 28 or between the pivot bearings 23 and 27, which corresponds to the distance between the pivot axis C and the pivot bearing 22.
  • the pivot axis C is placed at least significantly closer to the wrapping material webs 2 or 3 resting on the first deflection rollers 6 or 7 than was possible with the solutions known in the prior art.
  • the course of the wrapping material webs 2 and 3 can be regulated much more precisely and made much quieter.
  • the multi-joint mechanism described represents, regardless of the offset arrangement of the deflection roller groupings 4 and 5 or the terrace-like arrangement of the same due to the reduced stresses in the wrapping material webs 2 and 3, a significant improvement in the wrapping material web run and the edge control of the wrapping material webs 2 or 3, and can thus be used as a independent inventive idea.
  • a further developed spreading device can be seen, which has an identical multi-joint mechanism and two deflection roller groupings 4 and 5, which have already been described.
  • the further developed solution differs from the embodiment of FIG Fig. 3 in that the drive device 19 is formed here by two independently controllable servomotors which are each connected via an eccentric gear 30 to a coupling rod 16 of the multi-joint mechanisms assigned to the deflection roller groups 4 and 5.
  • Each of the deflection roller groupings 4 and 5 is assigned its own multi-joint mechanism designed according to the invention, so that the deflection roller groupings 4 and 5 can be adjusted separately from one another via their own coupling rod 16.
  • the rear deflection roller grouping 5 clearly has its own and identical multi-joint mechanism which, for the sake of clarity, has not been provided with reference symbols.
  • a partition 31 with one or more recesses 34 is provided, which separates an operator side 32 from a drive side 33.
  • the Spreader reaches through the recesses 34 with the coupling rods 16 and 17, so that the pulley groupings 4 and 5 are arranged on the operator side 32 of the partition 31, while the servomotors, the eccentric gear 30, the coupling rods 14 and 15 and the coupling rods 16 and 17 with the the recesses 34 non-penetrating sections are arranged on the drive side 33 of the system.
  • the operator can be protected intrinsically from unintentional intervention in the multi-joint mechanisms and the servomotors on the drive side 33.
  • the components arranged on the drive side 33 can be protected from mechanical influences from the operator side 32.
  • the servomotors are connected via the eccentric gears 30 to the ends of the coupling rods 16, which drive the drive movement through the recesses 34 of the partition 31 onto the support plates 20 arranged on the operator's side or the deflection rollers 6 held on them, 7,8 or 9 transferred.
  • the servomotors can thereby be arranged at a distance from the support plates 20 arranged on the operator side 32 and the deflection rollers 6, 7, 8 and 9 on the drive side 33.
  • the pulley groupings 4 and 5 are also offset from one another in the transport direction of the wrapping material webs 2 and 3, the pulley groupings 4 and 5 not being arranged in a terraced manner here, but instead being arranged in an approximately vertical orientation of the support plates 20 at a distance next to one another.

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  • Adjustment And Processing Of Grains (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Die Erfindung betrifft eine Spreizvorrichtung für zwei oder mehr Hüllmaterialbahnen zur Herstellung von wenigstens zwei parallelen Strängen von Produkten der Tabak verarbeitenden Industrie mit den Merkmalen des Oberbegriffs von Anspruch 1 und eine Anlage mit einer Spreizvorrichtung mit den Merkmalen des Oberbegriffs von Anspruch 17. Eine derartige Vorrichtung ist aus EP-A-0 309 818 bekannt.The invention relates to a spreading device for two or more wrapping material webs for the production of at least two parallel strands of products of the tobacco processing industry with the features of the preamble of claim 1 and a system with a spreading device with the features of the preamble of claim 17. Such a device is the end EP-A-0 309 818 known.

In Maschinen zur Herstellung von Produkten der Tabak verarbeitenden Industrie wird z.B. sowohl das strangförmige Filtermaterial als auch der Strang loser Tabakfasern mittels einer Hüllmaterialbahn fixiert. Um die Produktionsgeschwindigkeit zu erhöhen, hat es sich bewährt, die Produkte zumindest in der Strangformeinheit in zwei oder mehr parallel verlaufenden Strängen herzustellen, falls kein teures, vorgeschnittenes Hüllmaterial verwendet werden soll. Zur Herstellung der dazu erforderlichen parallel zugeführten Hüllmaterialbahnen wird zunächst eine Hüllmaterialbahn mehrfacher, insbesondere doppelter, Breite von einer Bobine abgewickelt und mittels einer Schneideinrichtung in einem kontinuierlichen Schneidvorgang in zwei oder mehr parallel zueinander ausgerichtete Hüllmaterialbahnen geschnitten. Die Schneideinrichtung ist durch eine Zug-Schneidwalzenbaugruppe gebildet, in der die mehrfachbreite Hüllmaterialbahn in zwei oder mehr Hüllmaterialbahnen identischer Breite geschnitten wird. Anschließend werden die parallelen Hüllmaterialbahnen mittels einer Spreizvorrichtung parallel zueinander versetzt, so dass sie anschließend parallel und in einem Abstand zueinander verlaufen. Dies ist insbesondere deshalb erforderlich, da die Stränge auch in der Strangformeinheit anschließend in einem Abstand und parallel zueinander verlaufen.In machines for the manufacture of products for the tobacco processing industry, for example, both the strand-like filter material and the strand of loose tobacco fibers are fixed by means of a sheet of wrapping material. In order to increase the production speed, it has proven useful to manufacture the products at least in the strand-forming unit in two or more parallel strands, if no expensive, pre-cut casing material is to be used. To produce the wrapping material webs required for this purpose, a wrapping material web of multiple, in particular double, widths is first unwound from a reel and cut into two or more wrapping material webs aligned parallel to one another in a continuous cutting process. The cutting device is formed by a pull-cutting roller assembly in which the multiple-width wrapping material web is cut into two or more wrapping material webs of identical width. The parallel wrapping material webs are then offset parallel to one another by means of a spreading device, so that they then run parallel and at a distance from one another. This is necessary in particular because the strands then also run in the strand forming unit at a distance and parallel to one another.

Aus der EP 1 186 247 B1 ist eine solche Spreizvorrichtung bekannt, welche eine der Anzahl der Hüllmaterialbahnen entsprechende Anzahl von Umlenkrollengruppierungen umfasst, welche jeweils von einer Hüllmaterialbahn derart durchlaufen werden, dass die Hüllmaterialbahn beim Einlauf an der Unterseite der ersten Umlenkrolle und dann an der Oberseite der zweiten Umlenkrolle umgelenkt wird. Die Umlenkrollen sind relativ zu den umgelenkten Hüllmaterialbahnen schräg angestellt, so dass die Hüllmaterialbahnen während des Umlenkens parallel seitlich versetzt werden. Der Spreizabstand der Hüllmaterialbahnen nach dem Durchlauf kann dadurch verändert werden, indem die zweiten Umlenkrollen in der Höhe verstellt werden.From the EP 1 186 247 B1 Such a spreading device is known, which comprises a number of deflection roller groupings corresponding to the number of wrapping material webs, each of which is traversed by a wrapping material web in such a way that the wrapping material web is deflected when entering the bottom of the first deflecting roller and then on the top of the second deflecting roller. The deflection rollers are inclined relative to the deflected wrapping material webs, so that the wrapping material webs are laterally offset in parallel during the deflection. The spreading distance of the wrapping material webs after passage can be changed by adjusting the height of the second deflection rollers.

Aus der EP 0 309 818 B1 ist eine Spreizvorrichtung ähnlicher Bauart bekannt, bei der die Umlenkrollengruppierungen jeweils zwei Umlenkrollen umfassen, welche jeweils paarweise auf einem gemeinsamen Traggestell angeordnet sind. Der Spreizabstand der Hüllmaterialbahnen wird bei dieser Lösung dadurch verändert, indem das Traggestell zusammen mit den Umlenkrollen um eine parallel zu der Zulaufrichtung durch die Mitte der ersten Umlenkrolle verlaufende Drehachse verschwenkt wird.From the EP 0 309 818 B1 a spreading device of a similar design is known in which the deflection roller groupings each comprise two deflection rollers, which are each arranged in pairs on a common support frame. The spreading distance of the wrapping material webs is changed in this solution in that the support frame is pivoted together with the deflection rollers about an axis of rotation running parallel to the feed direction through the center of the first deflection roller.

Bei beiden Lösungen sind die Umlenkrollen freifliegend einseitig gelagert, so dass die Hüllmaterialbahnen von der Seite der freien Enden der Umlenkrollen in die Umlenkrollengruppierungen eingefädelt werden können. Die Umlenkrollen der Umlenkrollengruppierungen, welche von den Hüllmaterialbahnen durchlaufen werden, sind dabei so zu einander angeordnet, dass die freien Enden der Umlenkrollen einander zugewandt sind und einen Abstand zueinander aufweisen. Dadurch können beide Hüllmaterialbahnen zwischen den Umlenkrollen in die Umlenkrollengruppierungen eingefädelt werden. Ein Nachteil dieser Lösungen ist darin zu sehen, dass der Einfädelvorgang der Hüllmaterialbahn ein besonderes Geschick der handhabenden Person voraussetzt und zeitintensiv ist.In both solutions, the deflection rollers are mounted free-floating on one side, so that the wrapping material webs can be threaded into the deflection roller groupings from the side of the free ends of the deflection rollers. The deflection rollers of the deflection roller groupings through which the wrapping material webs pass are arranged in relation to one another in such a way that the free ends of the deflection rollers face one another and are spaced apart from one another. As a result, both wrapping material webs can be threaded into the deflection roller groupings between the deflection rollers. A disadvantage of these solutions can be seen in the fact that the threading process of the wrapping material web requires special skill on the part of the person handling it and is time-consuming.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Spreizvorrichtung bzw. eine Anlage mit einer Spreizvorrichtung bereitzustellen, bei der das Einfädeln der Hüllmaterialbahnen einfacher zu handhaben ist.Against this background, the invention is based on the object of providing a spreading device or a system with a spreading device, in which the threading of the wrapping material webs is easier to handle.

Zur Lösung der Aufgabe wird eine Spreizvorrichtung mit den Merkmalen des Anspruchs 1 und eine Anlage mit den Merkmalen des Anspruchs 16 vorgeschlagen. Weitere bevorzugte Ausführungsformen der Erfindung sind den Unteransprüchen, den Figuren und der zugehörigen Beschreibung zu entnehmen.To achieve the object, a spreading device with the features of claim 1 and a system with the features of claim 16 are proposed. Further preferred embodiments of the invention can be found in the subclaims, the figures and the associated description.

Erfindungsgemäß wird zur Lösung der Aufgabe eine Spreizvorrichtung für zwei oder mehr Hüllmaterialbahnen zur Herstellung von wenigstens zwei parallelen Strängen von Produkten der Tabak verarbeitenden Industrie mit unter anderem folgenden Merkmalen vorgeschlagen:

  • einer der Anzahl der Hüllmaterialbahnen entsprechenden Anzahl von Umlenkrollengruppierungen, mit jeweils einzelnen Umlenkrollen, an denen jeweils eine Hüllmaterialbahn an unterschiedlichen Seiten umgelenkt wird, wobei
  • die Umlenkrollen derart schräggestellt sind, dass die daran umgelenkte Hüllmaterialbahn in Bezug zu der Zuführrichtung seitlich parallel versetzt aus der Umlenkrollengruppierung austritt, wobei der Kern der Erfindung darin zu sehen ist, dass die Umlenkrollengruppierungen in Transportrichtung der Hüllmaterialbahnen versetzt zueinander angeordnet sind.
According to the invention, a spreading device for two or more wrapping material webs for the production of at least two parallel strands of products of the tobacco-processing industry with inter alia the following features is proposed to achieve the object:
  • one of the number of deflecting roller groupings corresponding to the number of wrapping material webs, each with individual deflecting rollers, on each of which a wrapping material web is deflected on different sides, wherein
  • the deflection rollers are inclined in such a way that the wrapping material web deflected thereon emerges laterally offset from the deflection roller grouping in relation to the feed direction, the essence of the invention being that the deflection roller groupings are arranged offset to one another in the transport direction of the wrapping material webs.

Durch die in Transportrichtung versetzte Anordnung der Umlenkrollengruppierungen kann der Einfädelvorgang der Hüllmaterialbahnen erheblich vereinfacht werden, da der Zugang wesentlich vereinfacht ist. Die Hüllmaterialbahnen werden in Bezug zu der Transportrichtung versetzt in die Umlenkrollengruppierung eingeleitet und in den Umlenkrollengruppierungen seitlich parallel versetzt. Dabei durchlaufen die Hüllmaterialbahnen ausgehend von der Stelle, in der die erste Hüllmaterialbahn in die erste Umlenkrollengruppierung eintritt, bis zu der Stelle, in der die letzte Hüllmaterialbahn aus der Umlenkrollengruppierung austritt, dieselbe Wegstrecke, so dass keine Spannungen in den Vorlauf der Hüllmaterialbahnen eingebracht werden. Ferner kann der seitliche parallel Versatz der Hüllmaterialbahnen wesentlich individueller ausgelegt werden, als dies bei einer herkömmlichen Spreizvorrichtung mit gegenüberliegend angeordneten Umlenkrollengruppierungen möglich war. Im Extremfall wäre es sogar denkbar, die Hüllmaterialbahnen aufeinander zu versetzen, so dass sie sich anschließend zumindest teilweise in einem Randabschnitt überlappen.The threading process of the wrapping material webs can be considerably simplified by the arrangement of the deflection roller groupings offset in the transport direction, since the access is considerably simplified. The wrapping material webs are introduced into the deflection roller grouping offset in relation to the transport direction and laterally offset in parallel in the deflecting roller groupings. The wrapping material webs run from the point at which the first wrapping material web enters the first deflection roller grouping to the point in which the last wrapping material web from the deflection roller grouping emerges, the same distance, so that no stresses are introduced into the advance of the wrapping material webs. Furthermore, the parallel lateral offset of the wrapping material webs can be designed to be much more individual than was possible with a conventional spreading device with oppositely arranged deflection roller groups. In the extreme case, it would even be conceivable to offset the wrapping material webs on top of one another so that they then at least partially overlap in an edge section.

Weiter wird vorgeschlagen, dass die Umlenkrollengruppierungen terrassenartig übereinander angeordnet sind. Durch die vorgeschlagene Anordnung sind die Umlenkrollengruppierungen besonders einfach und handhabungsfreundlich zum Einfädeln des Umhüllungsstreifens von der Seite her zugänglich. Das Einfädeln ist dabei besonders einfach, wenn die Umlenkrollen einseitig freifliegend gelagert sind, so dass die Führungsbahn für den Umhüllungsstreifen seitlich offen ist.It is further proposed that the deflection roller groupings are arranged one above the other in the manner of a terrace. The proposed arrangement makes the pulley groupings accessible from the side in a particularly simple and easy-to-use manner for threading the wrapping strip. The threading in is particularly easy if the deflection rollers are mounted free-floating on one side, so that the guide track for the wrapping strip is open on the side.

Weiter wird vorgeschlagen, dass die Umlenkrollen jeweils einer Umlenkrollengruppierung einen identischen Durchmesser und einen identischen Relativwinkel zueinander aufweisen. Die ersten und die zweiten Umlenkrollen einer Umlenkrollengruppierung weisen demnach einen identischen Durchmesser auf und sind jeweils so zu der anlaufenden Hüllmaterialbahn ausgerichtet, dass die Umlenkrollen der einzelnen Umlenkrollengruppierungen einen identischen Relativwinkel zueinander aufweisen, d.h. die Relativwinkel zwischen der jeweils ersten Umlenkrolle und der jeweils zweiten Umlenkrolle der verschiedenen Umlenkrollengruppierungen ist jeweils identisch. Der Relativwinkel ist dabei die Winkeldifferenz zwischen den Längsachsen bzw. Drehachsen der Umlenkrollen einer Umlenkrollengruppierung in der Projektion in Transportrichtung, welche ursächlich für den seitlichen Versatz der Hüllmaterialbahnen ist, so dass dieser im Ergebnis bei den einzelnen Umlenkrollengruppierungen ebenfalls identisch ist. Der Vorteil der vorgeschlagenen Lösung ist darin zu sehen, dass die Umlenkung und die dabei aufgrund des Relativwinkels bewirkte Winkeländerung der Hüllmaterialbahn zwischen dem Zulaufabschnitt und dem Ablaufabschnitt an den Umlenkrollen der unterschiedlichen Umlenkrollengruppierungen identisch ist. Die Umlenkung ist dabei ferner abhängig von dem Durchmesser der Umlenkrollen, welche aufgrund des identischen Durchmessers ebenfalls identisch ist.It is further proposed that the deflection rollers in each case of a deflection roller grouping have an identical diameter and an identical relative angle to one another. The first and the second deflection rollers of a deflection roller grouping accordingly have an identical diameter and are each aligned with the incoming wrapping material web in such a way that the deflection rollers of the individual deflection roller groupings have an identical relative angle to one another, ie the relative angle between the respective first deflection roller and the respective second deflection roller of the different pulley groupings is identical in each case. The relative angle is the angle difference between the longitudinal axes or axes of rotation of the deflection rollers of a deflection roller grouping in the projection in the transport direction, which is the cause of the lateral offset of the wrapping material webs, so that this is also identical in the result for the individual deflection roller groupings. The advantage of the proposed solution is that the deflection and the change in angle of the wrapping material web caused by the relative angle between the inlet section and the outlet section on the deflection rollers of the different deflection roller groupings are identical. The deflection is also dependent on the diameter of the deflection rollers, which is also identical due to the identical diameter.

Weiter wird vorgeschlagen, dass die Abstände zwischen den Umlenkrollen in jeweils einer Umlenkrollengruppierung bei den unterschiedlichen Umlenkrollengruppierungen identisch sind. Dadurch ist die Wegstrecke, welche von den Hüllmaterialbahnen beim Durchlaufen durch die Umlenkrollengruppierungen zurückgelegt wird, identisch, so dass durch die Spreizvorrichtung keine zusätzlichen Spannungen in die Hüllmaterialbahnen eingebracht werden und zwar weder in den Vorlauf noch in den Nachlauf der Hüllmaterialbahnen.It is further proposed that the distances between the deflection rollers in each of the deflection roller groupings are identical for the different deflection roller groupings. As a result, the distance covered by the wrapping material webs when passing through the pulley groupings is identical, so that no additional stresses are introduced into the wrapping material webs by the spreading device, namely neither in the leading nor in the trailing edge of the wrapping material webs.

Im Idealfall sind die Umlenkrollengruppierungen identisch und spiegelsymmetrisch ausgebildet bzw. ausgerichtet, so dass die Hüllmaterialbahnen um eine identische Wegstrecke seitlich versetzt werden.In the ideal case, the pulley groupings are identical and designed or aligned with mirror symmetry, so that the wrapping material webs are laterally offset by an identical distance.

Ferner wird vorgeschlagen, dass die Zuführ- und die Abführrichtung der Hüllmaterialbahnen zu den Umlenkrollengruppierungen hin und von diesen weg parallel zueinander ausgerichtet sind. Durch die parallele Ausrichtung der Hüllmaterialbahnen in der Zuführ- und der Abführrichtung kann der Hüllmaterialbahnlauf weiter vergleichmäßigt werden, indem durch den parallelen Verlauf der Hüllmaterialbahnen die Wahrscheinlichkeit des Auftretens von Spannungen in den Hüllmaterialbahnen weiter verringert wird. Dadurch kann der Verlauf der Hüllmaterialbahnen besonders genau gesteuert werden, was insbesondere zur Steuerung der Kantenlage der Hüllmaterialbahnen von Vorteil ist.It is further proposed that the feed and discharge directions of the wrapping material webs towards and away from the deflection roller groupings are aligned parallel to one another. Due to the parallel alignment of the wrapping material webs in the feed and the discharge direction, the wrapping material web run can be made even more uniform, in that the parallel run of the wrapping material webs further reduces the likelihood of stresses occurring in the wrapping material webs. As a result, the course of the wrapping material webs can be controlled particularly precisely, which is particularly advantageous for controlling the edge position of the wrapping material webs.

Eine besonders genaue Steuerung wird dabei dadurch verwirklicht, indem die Umlenkrollengruppierungen jeweils um eine durch die an der ersten Umlenkrolle anliegende Hüllmaterialbahn verlaufende Schwenkachse verschwenkbar sind. Durch die vorgeschlagene Lösung können die möglichen, durch die Schwenkbewegung der Umlenkrollengruppierungen in die Hüllmaterialbahn eingebrachten Spannungen auf ein Minimum reduziert und im Idealfall sogar gänzlich auf Null reduziert werden.A particularly precise control is achieved in that the deflection roller groupings can each be pivoted about a pivot axis running through the wrapping material web resting on the first deflection roller. With the proposed solution, the possible tensions introduced into the wrapping material web by the pivoting movement of the deflection roller groups can be reduced to a minimum and, in the ideal case, even completely reduced to zero.

Im Idealfall liegt die Schwenkachse genau in der Längsmittellinie der Hüllmaterialbahn, so dass die Hüllmaterialbahn seitlich der Mittellinie jeweils um denselben Winkel und in derselben Breite bei der Verstellung der Umlenkrollengruppierung verschwenkt wird.In the ideal case, the pivot axis lies exactly in the longitudinal center line of the wrapping material web, so that the wrapping material web is pivoted laterally to the center line by the same angle and in the same width when the deflection roller grouping is adjusted.

Weiter wird vorgeschlagen, dass die Umlenkrollengruppierungen jeweils mittels einer durch einen Vielgelenkmechanismus gebildeten Verstelleinrichtung verstellbar sind. Durch den Vielgelenkmechanismus kann die gesamte Umlenkrollengruppierung besonders einfach um die virtuelle in der Hüllmaterialbahn angeordnete Schwenkachse verschwenkt werden, wobei dadurch außerdem die Stellbewegung einer linearen Antriebseinrichtung besonders einfach in eine Schwenkbewegung umgewandelt werden kann. Dies kann besonders einfach verwirklicht werden, indem der die Verstellbewegung übertragende Vielgelenkmechanismus eine die Schwenkachse definierende Zwangsführung aufweist. Die Zwangsführung ist gebildet durch verschiedene Gelenke, welche durch ihre Abstände zueinander den Bewegungsablauf während der Verschwenkbewegung vorgeben.It is further proposed that the deflection roller groupings are each adjustable by means of an adjusting device formed by a multi-joint mechanism. Due to the multi-joint mechanism, the entire group of deflection rollers can be pivoted particularly easily about the virtual pivot axis arranged in the wrapping material web, with the adjustment movement of a linear drive device also being able to be converted into a pivot movement in a particularly simple manner. This can be achieved in a particularly simple manner in that the multi-joint mechanism which transmits the adjustment movement has a forced guidance which defines the pivot axis. The positive guidance is formed by various joints which, through their spacing from one another, specify the sequence of movements during the pivoting movement.

Dabei ist der die Verstellbewegung übertragende Vielgelenkmechanismus bevorzugt mit zwei ersten Koppelstangen in zwei ortsfesten Schwenklagern gelagert, wobei die ortsfesten Schwenklager bevorzugt derart angeordnet sind, dass deren Schwenkachsen auf einer Geraden liegen, welche durch die an der ersten Umlenkrolle anliegende Hüllmaterialbahn verläuft.The multi-joint mechanism transmitting the adjustment movement is preferably mounted with two first coupling rods in two stationary pivot bearings, the stationary pivot bearings preferably being arranged in such a way that their pivot axes lie on a straight line which runs through the wrapping material web adjacent to the first deflection roller.

Ferner sind die ersten Koppelstangen bevorzugt über wenigstens zwei zweite Koppelstangen miteinander gekoppelt, an deren Enden eine Tragplatte in jeweils einem Schwenklager schwenkbar gelagert ist, wobei die Umlenkrollen an der Tragplatte angeordnet sind.Furthermore, the first coupling rods are preferably coupled to one another via at least two second coupling rods, each of which has a support plate at its ends a pivot bearing is pivotally mounted, wherein the pulleys are arranged on the support plate.

Weiter wird vorgeschlagen, dass die zweiten Koppelstangen jeweils in Schwenklagern gegenüber den ersten Koppelstangen gelagert sind, und wenigstens die den ortsfesten Schwenklagern nächstliegenden Schwenklager zwischen den ersten und zweiten Koppelstangen derart angeordnet sind, dass sie senkrecht zu der Transportrichtung der Hüllmaterialbahn einen Abstand zu den ortsfesten Schwenklagern aufweisen, welcher dem Abstand zwischen der Schwenkachse der Hüllmaterialbahn und dem nächstliegenden Schwenklager zwischen der Tragplatte und einer der zweiten Koppelstangen senkrecht zu der Transportrichtung der Hüllmaterialbahn entspricht.It is also proposed that the second coupling rods are each mounted in pivot bearings opposite the first coupling rods, and at least the pivot bearings closest to the stationary pivot bearings are arranged between the first and second coupling rods in such a way that they are at a distance from the stationary pivot bearings perpendicular to the transport direction of the wrapping material web have, which corresponds to the distance between the pivot axis of the wrapping material web and the closest pivot bearing between the support plate and one of the second coupling rods perpendicular to the transport direction of the wrapping material web.

Weiter wird vorgeschlagen, dass der Abstand zwischen der Schwenkachse und dem nächstliegenden Schwenklager zwischen der Tragplatte und einer der zweiten Koppelstangen senkrecht zu der Transportrichtung der Hüllmaterialbahn dem Abstand zwischen den ortsfesten Schwenklagern und den nächstliegenden Schwenklagern zwischen den Koppelstangen und dem Abstand zwischen der Schwenkachse und dem nächstliegenden Schwenklager zwischen der Tragplatte und einer der zweiten Koppelstangen in Transportrichtung der Hüllmaterialbahn entspricht.It is further proposed that the distance between the pivot axis and the closest pivot bearing between the support plate and one of the second coupling rods perpendicular to the transport direction of the wrapping material web is the distance between the stationary pivot bearings and the closest pivot bearings between the coupling rods and the distance between the pivot axis and the closest one Pivot bearing between the support plate and one of the second coupling rods corresponds to the transport direction of the wrapping material web.

Ferner wird vorgeschlagen, dass die zweiten Koppelstangen jeweils in Schwenklagern gegenüber den ersten Koppelstangen gelagert sind, und der Abstand zwischen den Schwenklagern der zweiten Koppelstangen dem Abstand zwischen den ortsfesten Schwenklagern entspricht.It is also proposed that the second coupling rods are each mounted in pivot bearings opposite the first coupling rods, and the distance between the pivot bearings of the second coupling rods corresponds to the distance between the stationary pivot bearings.

Weiterhin wird vorgeschlagen, dass die zweiten Koppelstangen jeweils in Schwenklagern gegenüber den ersten Koppelstangen gelagert sind, und der Abstand zwischen dem der Schwenkachse der Hüllmaterialbahn nächstliegenden ortsfesten Schwenklager und der Schwenkachse der Hüllmaterialbahn dem Abstand zwischen dem Schwenklager zwischen der Tragplatte und einer der zweiten Koppelstangen, welches der Schwenkachse am nächsten ist, zu dem Schwenklager zwischen einer der ersten und zweiten Koppelstange, welches zu dem ortsfesten Schwenklager nächstliegend angeordnet ist, entspricht.It is further proposed that the second coupling rods are each mounted in pivot bearings opposite the first coupling rods, and the distance between the stationary pivot bearing closest to the pivot axis of the wrapping material web and the pivot axis of the wrapping material web is the distance between the pivot bearing between the support plate and one of the second coupling rods, which is closest to the pivot axis, corresponds to the pivot bearing between one of the first and second coupling rod, which is arranged closest to the stationary pivot bearing.

Durch die vorgeschlagene Anordnung der Schwenklager und die Bemessung der Abstände der Schwenklager kann das Verschwenken der Hüllmaterialbahn um eine in der Hüllmaterialbahn verlaufende Schwenkachse ermöglicht werden, wodurch eine sehr genaue Regelung der Kantenlage der Hüllmaterialbahn mit sehr geringen Spannungen in dem Vor- und Nachlauf der Hüllmaterialbahn ermöglicht werden kann. Insbesondere kann dadurch verhindert werden, dass die Hüllmaterialbahn während des Verschwenkens seitlich so weit an der Umlenkrolle abläuft, dass die Schwenkachse der Hüllmaterialbahn außerhalb der Hüllmaterialbahn verläuft.The proposed arrangement of the swivel bearings and the dimensioning of the distances between the swivel bearings enables the wrapping material web to be swiveled about a swivel axis running in the wrapping material web, which enables the edge position of the wrapping material web to be controlled very precisely with very little tension in the leading and trailing edge of the wrapping material web can be. In particular, this can prevent the wrapping material web from running laterally on the deflecting roller during the pivoting so far that the pivot axis of the wrapping material web runs outside the wrapping material web.

Weiter wird vorgeschlagen, dass die Umlenkrollengruppierungen mittels einer an die zweiten Koppelstangen angekoppelten Antriebseinrichtung verstellbar sind. Die vorgeschlagene Lösung ist insofern von Vorteil, da die Antriebseinrichtung dadurch in einem Abstand zu den Umlenkrollengruppierungen angeordnet und befestigt werden können, ohne dass dies Nachteile für die Verstellgenauigkeit hat, da die zweiten Koppelstangen unmittelbar an die Tragplatten angeschlossen sind, an denen die Umlenkrollen gehalten sind.It is further proposed that the deflection roller groupings are adjustable by means of a drive device coupled to the second coupling rods. The proposed solution is advantageous in that the drive device can thereby be arranged and fastened at a distance from the deflection roller groupings without this having disadvantages for the adjustment accuracy, since the second coupling rods are connected directly to the support plates on which the deflection rollers are held .

Ferner wird zur Lösung der Aufgabe eine Anlage mit einer Spreizvorrichtung nach Anspruch 15 vorgeschlagen, wobei die Anlage eine Trennwand aufweist, die Spreizvorrichtung sich durch die Trennwand hindurch erstreckt, und die Umlenkrollengruppierungen auf einer Bedienerseite der Trennwand, und die Antriebseinrichtung auf einer Antriebsseite der Trennwand angeordnet sind. Durch die vorgeschlagene Trennwand, und die Anordnung der Umlenkrollengruppierungen kann der Bediener z.B. während des Einfädelns der Hüllmaterialbahnen vor einem ungewollten Eingriff in die Antriebseinrichtungen und den zugehörigen Getriebemechanismus zur Übertragung der Antriebsbewegung geschützt werden. Ferner können die Antriebseinrichtung, der Getriebemechanismus und der entsprechende Teil des Vielgelenkmechanismus vor äußeren mechanischen Einflüssen seitens der Bedienerseite geschützt werden. Für den Bediener sind damit bewusst nur die Umlenkrollengruppierungen für das Einfädeln der Hüllmaterialbahnen zugänglich.Furthermore, a system with a spreading device according to claim 15 is proposed to achieve the object, the system having a partition, the spreading device extending through the partition, and the deflection roller groupings on an operator side of the partition, and the drive device being arranged on a drive side of the partition are. The proposed partition and the arrangement of the pulley groupings can protect the operator from unintentional interference with the drive devices and the associated gear mechanism for transmitting the drive movement, e.g. while threading the wrapping material webs. Furthermore, the drive device, the gear mechanism and the corresponding part of the multi-joint mechanism can be protected from external mechanical influences on the part of the operator. For the operator, only the pulley groupings for threading the wrapping material webs are deliberately accessible.

Weiter wird vorgeschlagen, dass die Trennwand Aussparungen aufweist, und der Vielgelenkmechanismus die Aussparungen der Trennwand mit den zweiten Koppelstangen durchgreift, und die ersten Koppelstangen des Vielgelenkmechanismus auf der Antriebsseite und die Tragplatten des Vielgelenkmechanismus auf der Bedienerseite der Trennwand angeordnet sind.It is further proposed that the partition has recesses, and the multi-joint mechanism extends through the recesses of the partition with the second coupling rods, and the first coupling rods of the multi-joint mechanism are arranged on the drive side and the support plates of the multi-joint mechanism are arranged on the operator side of the partition.

Die Erfindung wird im Folgenden anhand bevorzugter Ausführungsformen unter Bezugnahme auf die beigefügten Figuren erläutert. Dabei zeigt:

Fig. 1:
eine erfindungsgemäß ausgebildete Spreizvorrichtung in Seitenansicht; und
Fig. 2:
eine erfindungsgemäß ausgebildete Spreizvorrichtung aus Fig. 1 in Sicht von oben; und
Fig. 3:
einen Vielgelenkmechanismus zur Verstellung einer Umlenkrollengruppierung in verschiedenen Ansichten; und
Fig. 4:
die Abstände der Schwenklager des Vielgelenkmechanismus; und
Fig. 5:
eine erfindungsgemäße Anlage mit einer Spreizvorrichtung und einer Trennwand in einer ersten Ansicht; und
Fig. 6:
eine erfindungsgemäße Anlage mit einer Spreizvorrichtung mit einer Trennwand in einer zweiten Ansicht.
The invention is explained below on the basis of preferred embodiments with reference to the accompanying figures. It shows:
Fig. 1:
a spreading device designed according to the invention in a side view; and
Fig. 2:
a spreading device designed according to the invention Fig. 1 in view from above; and
Fig. 3:
a multi-joint mechanism for adjusting a deflection roller grouping in different views; and
Fig. 4:
the distances between the pivot bearings of the multi-joint mechanism; and
Fig. 5:
a system according to the invention with a spreading device and a partition in a first view; and
Fig. 6:
a system according to the invention with a spreading device with a partition in a second view.

In der Fig. 1 ist eine erfindungsgemäße Spreizvorrichtung schematisch von der Seite zu erkennen. Der Spreizvorrichtung wird eine Hüllmaterialbahn 1 mehrfacher, in diesem Fall doppelter, Breite von einer nicht dargestellten Bobine zugeführt und in einer Zug-Schneidwalzengruppierung 10 in zwei parallele Hüllmaterialbahnen 2 und 3 einfacher Breite geschnitten. Die nach dem Schneiden unmittelbar seitlich aneinander anliegenden Hüllmaterialbahnen 2 und 3 werden dann zwei in Transportrichtung der Hüllmaterialbahnen 2 und 3 versetzt zueinander angeordneten Umlenkrollengruppierungen 4 und 5 zugeführt. Die in der Darstellung vordere Hüllmaterialbahn 2 wird zuerst in die erste Umlenkrollengruppierung 4 eingeführt, und an der Oberseite der ersten Umlenkrolle 6 nach unten zu der Unterseite der zweiten Umlenkrolle 8 und anschließend wieder von der Unterseite der zweiten Umlenkrolle 8 abgeführt. Die Zuführrichtungen I und III der Hüllmaterialbahnen 2 und 3 und die Abführrichtungen II und IV sind dabei sowohl in der Vertikalebene der Darstellung der Fig. 1 als auch in der Horizontalebene der Darstellung der Fig. 2 parallel zueinander ausgerichtet.In the Fig. 1 a spreading device according to the invention can be seen schematically from the side. A wrapping material web 1 of multiple, in this case double, width is fed to the spreading device from a reel, not shown, and is cut in a pull-cutting roller grouping 10 into two parallel wrapping material webs 2 and 3 of single width. The wrapping material webs 2 and 3 immediately adjacent to one another after cutting are then fed to two deflection roller groups 4 and 5 arranged offset from one another in the transport direction of the wrapping material webs 2 and 3. The wrapping material web 2 at the front in the illustration is first introduced into the first deflection roller grouping 4, and at the top of the first deflection roller 6 down to the underside of the second deflection roller 8 and then again from the underside of the second deflection roller 8. The feed directions I and III of the wrapping material webs 2 and 3 and the discharge directions II and IV are both in the vertical plane of the representation of the Fig. 1 as well as in the horizontal plane of the representation of the Fig. 2 aligned parallel to each other.

Die zweite hintere Hüllmaterialbahn 3 wird erst nach dem Zurücklegen einer Wegstrecke, also in Transportrichtung versetzt, in einer zweiten Umlenkrollengruppierung 5 mit ebenfalls zwei Umlenkrollen 7 und 9 umgelenkt. Die zwei Umlenkrollen 7 und 9 der zweiten Umlenkrollengruppierung 5 und die zwei Umlenkrollen 6 und 8 der ersten Umlenkrollengruppierung 4 sind in einem identischen Abstand zueinander ausgerichtet und weisen einen identischen Durchmesser auf. Ferner sind die ersten Umlenkrollen 6 und 7 und die zweiten Umlenkrollen 8 und 9 jeweils in einem identischen Relativwinkel zueinander ausgerichtet, so dass die Hüllmaterialbahnen 2 und 3 beim Durchlaufen der Umlenkrollengruppierungen 4 und 5 dieselbe Wegstrecke zurücklegen und bei einer spiegelsymmetrischen Ausrichtung der Umlenkrollengruppierungen um denselben Weg parallel seitlich versetzt werden. Dabei werden die Hüllmaterialbahnen 2 und 3 in den Umlenkrollengruppierungen 4 und 5 jeweils zweimal umgelenkt, und dabei aufgrund der Schrägstellungen der Umlenkrollen 6,7,8 und 9 in entgegengesetzte Richtungen verschwenkt. Durch das entgegengesetzte Verschwenken der Hüllmaterialbahnen 2 und 3 um ihre Längsachsen werden diese parallel seitlich zueinander versetzt, so dass sie nach dem Ablaufen von den zweiten Umlenkrollen 8 und 9 parallel und in einem Abstand zueinander verlaufen, also gespreizt sind.The second rear wrapping material web 3 is only deflected in a second deflection roller grouping 5 with two deflection rollers 7 and 9 after it has covered a distance, that is to say offset in the transport direction. The two deflecting rollers 7 and 9 of the second deflecting roller grouping 5 and the two deflecting rollers 6 and 8 of the first deflecting roller grouping 4 are aligned at an identical distance from one another and have an identical diameter. Furthermore, the first deflection rollers 6 and 7 and the second deflection rollers 8 and 9 are each aligned at an identical relative angle to one another, so that the wrapping material webs 2 and 3 cover the same distance when passing through the deflection roller groupings 4 and 5 and the same distance when the deflection roller groupings are mirror-symmetrical be offset laterally in parallel. The wrapping material webs 2 and 3 are each deflected twice in the deflection roller groupings 4 and 5, and pivoted in opposite directions due to the inclinations of the deflection rollers 6, 7, 8 and 9. By pivoting the wrapping material webs 2 and 3 in opposite directions about their longitudinal axes, they are offset laterally parallel to one another, so that after running off the second deflection rollers 8 and 9, they run parallel and at a distance from one another, i.e. are spread apart.

Die Winkel der Umlenkrollen 6,7,8 und 9 zu den Hüllmaterialbahnen sind dabei so gewählt, dass die Hüllmaterialbahnen ungefähr um den identischen Betrag jeweils nach außen versetzt werden, so dass der Abstand der Hüllmaterialbahnen 2 und 3 anschließend der Summe der seitlichen Versatzbewegungen, und im Idealfall bei einer symmetrischen Versatzbewegung der zweifachen Versatzbewegung einer Hüllmaterialbahn 2 oder 3 entspricht. Dabei sind die Winkel der ersten Umlenkrollen 6 und 7 und der zweiten Umlenkrollen 8 und 9 paarweise spiegelsymmetrisch zueinander ausgerichtet, so dass sich in der Grundstellung der Spreizvorrichtung ein identischer Versatz der Hüllmaterialbahnen 2 und 3 nach außen, d.h. senkrecht zu der Transportrichtung, ergibt. Nach dem Auslauf aus den Umlenkrollengruppierungen 4 und 5 werden die Hüllmaterialbahnen 2 und 3 an einer die Kantenlage sensierenden Sensoreinrichtung 11 vorbeigeführt und anschließend über eine Einfädeleinrichtung 12 in eine nicht dargestellte Strangformeinheit eingeführt, in welcher z.B. ein Strang aus losen Tabakfasern auf die Hüllmaterialbahnen 2 und 3 aufgelegt wird.The angles of the pulleys 6, 7, 8 and 9 to the wrapping material webs are selected so that the wrapping material webs are each offset outwards by approximately the same amount, so that the distance between the wrapping material webs 2 and 3 is then the sum of the lateral offset movements, and in the ideal case, in the case of a symmetrical offset movement, this corresponds to the double offset movement of a wrapping material web 2 or 3. The angles of the first deflection rollers 6 and 7 and the second deflection rollers 8 and 9 are aligned mirror-symmetrically to one another in pairs, so that in the basic position of the spreading device there is an identical offset of the wrapping material webs 2 and 3 outwards, i.e. perpendicular to the transport direction. After leaving the pulley groupings 4 and 5, the wrapping material webs 2 and 3 are guided past a sensor device 11 that senses the edge position and then introduced via a threading device 12 into a strand forming unit (not shown) in which, for example, a strand of loose tobacco fibers is applied to the wrapping material webs 2 and 3 is launched.

In der Fig. 2 ist die Spreizvorrichtung aus der Fig. 1 in Sicht von oben zu erkennen. Die mehrfachbreite Hüllmaterialbahn 1 wird in der Zug-Schneidwalzengruppierung 10 in zwei parallele einfachbreite Hüllmaterialbahnen 2 und 3 geschnitten. Nach dem Schneiden werden die Hüllmaterialbahnen 2 und 3 in der Darstellung schräg auf den Betrachter zugeführt.In the Fig. 2 is the spreader from the Fig. 1 visible from above. The multiple-width wrapping material web 1 is cut in the pull-cutting roller grouping 10 into two parallel single-width wrapping material webs 2 and 3. After cutting, the wrapping material webs 2 and 3 are fed diagonally towards the viewer in the illustration.

Zuerst wird die in der Darstellung untere Hüllmaterialbahn 2 in die erste Umlenkrollengruppierung 4 eingeführt und an der Oberseite der ersten Umlenkrolle 6 zu der Unterseite der zweiten Umlenkrolle 8 hin umgelenkt. Die obere Hüllmaterialbahn 3 wird in Transportrichtung versetzt, also nach dem Zurücklegen einer geringen Wegstrecke an der ersten Umlenkrolle 7 der zweiten Umlenkrollengruppierung 5 umgelenkt, und zwar wieder an der Oberseite der ersten Umlenkrolle 7 zu der Unterseite der zweiten Umlenkrolle 9 hin. Dabei sind die Winkel A der ersten Umlenkrollen 6 und 7 zu den Zuführrichtungen I und III und die Winkel B der zweiten Umlenkrollen 8 und 9 zu den Abführrichtungen II und IV der Hüllmaterialbahnen 2 und 3 jeweils identisch, so dass die Zuführ- und die Abführrichtungen I,II,III und IV in der Ansicht von oben parallel zueinander verlaufen. Da die Hüllmaterialbahnen 2 und 3 außerdem an den Umfängen der Umlenkrollen 6,7,8 und 9 um denselben Umfangswinkel umgelenkt werden, sind die Hüllmaterialbahnen 2 und 3 außerdem auch in der Zuführrichtung I und III und der Abführrichtung II und IV in der Seitenansicht der Fig. 1 parallel zueinander ausgerichtet.First, the wrapping material web 2, which is lower in the illustration, is introduced into the first deflection roller grouping 4 and deflected on the upper side of the first deflection roller 6 to the underside of the second deflection roller 8. The upper wrapping material web 3 is offset in the transport direction, that is, after having covered a short distance on the first deflection roller 7 of the second deflection roller group 5, it is deflected again on the upper side of the first deflection roller 7 to the underside of the second deflection roller 9. The angles A of the first deflection rollers 6 and 7 to the feed directions I and III and the angles B of the second deflection rollers 8 and 9 to the discharge directions II and IV of the wrapping material webs 2 and 3 are each identical, so that the feed and discharge directions I. , II, III and IV run parallel to one another in the view from above. Since the wrapping material webs 2 and 3 are also deflected around the circumferences of the deflection rollers 6,7,8 and 9 by the same circumferential angle, the wrapping material webs 2 and 3 are also in the feed direction I and III and the discharge direction II and IV in the side view of Fig. 1 aligned parallel to each other.

Die Umlenkrollengruppierungen 4 und 5 sind in Bezug zu der Transportrichtung der Hüllmaterialbahnen 2 und 3 versetzt zueinander angeordnet, so dass sie aufgrund des schräg von unten nach oben ausgerichteten Verlaufs der Hüllmaterialbahnen 2 und 3 terrassenartig übereinander angeordnet sind. Da die Umlenkrollengruppierungen 4 und 5 versetzt zueinander angeordnet sind, können die Hüllmaterialbahnen 2 und 3 sehr viel einfacher seitlich eingeführt werden, da die Umlenkrollengruppierungen 4 und 5 nunmehr von der Seite zugänglich sind. Die verbesserte Zugänglichkeit wird dabei insbesondere durch die terrassenartige Anordnung der Umlenkrollengruppierungen 4 und 5 erreicht, da sich die Umlenkrollengruppierungen 4 und 5 dadurch seitlich nicht mehr überdecken. Die terrassenartige Anordnung wird hier durch eine entsprechend große Umlenkung der Hüllmaterialbahn 2 an der ersten Umlenkrolle 6 der ersten Umlenkrollengruppierung 4 in Umfangsrichtung und durch eine entsprechende Bemessung der Wegstrecke, welche die zweite Hüllmaterialbahn 3 vor dem Einlaufen in die zweite Umlenkrollengruppierung 4 zurücklegt, erreicht. Die Umlenkrollen 6,7,8 und 9 in den Umlenkrollengruppierungen 4 und 5 sind jeweils einseitig freifliegend gelagert, so dass die Führungsbahnen der Hüllmaterialbahnen 2 und 3 in den Umlenkrollengruppierungen 4 und 5 seitlich offen sind, und die Hüllmaterialbahnen 4 und 5 sehr einfach seitlich eingeschoben werden können.The pulley groupings 4 and 5 are offset from one another in relation to the transport direction of the wrapping material webs 2 and 3, so that they are arranged one above the other in a terrace-like manner due to the inclined upwardly directed course of the wrapping material webs 2 and 3. Since the pulley groupings 4 and 5 are offset from one another, the wrapping material webs 2 and 3 can be introduced laterally much more easily, since the pulley groupings 4 and 5 are now accessible from the side. The improved accessibility is achieved in particular by the terrace-like arrangement of the pulley groupings 4 and 5, since the pulley groupings 4 and 5 thereby laterally no longer cover. The terrace-like arrangement is achieved here by a correspondingly large deflection of the wrapping material web 2 at the first deflection roller 6 of the first deflection roller grouping 4 in the circumferential direction and by correspondingly dimensioning the distance covered by the second wrapping material web 3 before entering the second deflection roller grouping 4. The pulleys 6, 7, 8 and 9 in the pulley groupings 4 and 5 are each mounted free-floating on one side, so that the guideways of the wrapping material webs 2 and 3 in the pulley groupings 4 and 5 are open at the sides, and the wrapping material webs 4 and 5 are very easily pushed in laterally can be.

Sofern die Sensoreinrichtung 11 eine Abweichung der Ist-Ausrichtung der Hüllmaterialbahnen 2 und 3 von einer Soll-Ausrichtung sensiert, welche außerhalb eines vorgegebenen Toleranzbereichs liegt, so kann die Ausrichtung der Hüllmaterialbahnen 2 und 3 durch Verschwenken der Umlenkrollengruppierungen 4 und 5 mittels eines Verstellmechanismus individuell korrigiert werden. Der Verstellmechanismus ist durch einen Vielgelenkmechanismus gebildet, welcher in der Fig. 3 aus verschiedenen Ansichten zu erkennen ist. Der Vielgelenkmechanismus umfasst eine Mehrzahl von Koppelstangen 14,15,16,17 und 29, welche in Gelenken 23,24,25 und 26 schwenkbeweglich miteinander verbunden sind. Ferner ist der Vielgelenkmechanismus mit den Enden der Koppelstangen 14,15 und 29 in Schwenklagern 27 und 28 an einem maschinenfesten Halter 18 befestigt. Die Umlenkrollen 6 und 8 sind an einer Tragplatte 20 einseitig freifliegend gelagert, welche ihrerseits schwenkbeweglich an den freien Enden der Koppelstangen 16 und 17 gehalten ist. Ferner ist eine lineare Antriebseinrichtung 19 vorgesehen, welche an dem von der ersten Umlenkrolle 6 entfernteren Ende der Tragplatte 20 angeschlossen ist. Der Vielgelenkmechanismus ist so ausgelegt, und weist insbesondere eine derartige Zwangsführung auf, dass die lineare Antriebsbewegung der Antriebseinrichtung 19 in eine Schwenkbewegung des gesamten Vielgelenkmechanismus mit einer die Oberfläche der ersten Umlenkrolle 6 tangierenden Schwenkachse C umgewandelt wird. Dadurch kann der Winkel der Umlenkrollen 6 und 8 relativ zu der daran umgelenkten Hüllmaterialbahn 2 verändert werden, wobei die Schwenkachse C im Idealfall in der Hüllmaterialbahn 2, vorzugsweise in der Mittellängsachse der Hüllmaterialbahn 2 liegt, so dass trotz des Verschwenkens der ersten Umlenkrolle 6 keine Spannungen in die Hüllmaterialbahn 2 und auch keine Spannungen in die mehrfachbreite Hüllmaterialbahn 1 im Vorlauf eingebracht werden. Damit die Schwenkachse C die Oberfläche der Umlenkrolle 6 tangiert, ist es wichtig, dass die Mittelpunkte der Schwenklager 27 und 28 an dem maschinenfesten Halter 18 auf einer die Oberfläche der Umlenkrolle 6 tangierenden Verbindungsgeraden angeordnet sind. Sofern die erste Umlenkrollengruppierung 4 verschwenkt wird, verläuft die Verbindungsgerade der Mittelpunkte der Schwenklager 27 und 28 nach dem Verschwenken nicht tangential durch die Oberfläche der Umlenkrolle 6, sondern stattdessen näherungsweise durch die Schwenkachse C. Ferner müssen die Schwenklager 27 und 28 an dem Halter 18 so angeordnet sein, dass die Abstände D der Mittelpunkte der Schwenklager 27 und 28 von den Mittelpunkten der Schwenklager 23 und 25 in der Projektion in Richtung der Verbindungsgeraden dem Abstand D zwischen dem Mittelpunkt des Schwenklagers 22 und der Schwenkachse C in Richtung der Verbindungsgeraden entsprechen.If the sensor device 11 senses a deviation of the actual alignment of the wrapping material webs 2 and 3 from a target alignment which is outside a predetermined tolerance range, the alignment of the wrapping material webs 2 and 3 can be individually corrected by pivoting the deflection roller groups 4 and 5 by means of an adjusting mechanism will. The adjustment mechanism is formed by a multi-joint mechanism, which in the Fig. 3 can be seen from different views. The multi-joint mechanism comprises a plurality of coupling rods 14, 15, 16, 17 and 29, which are pivotably connected to one another in joints 23, 24, 25 and 26. Furthermore, the multi-joint mechanism is fastened with the ends of the coupling rods 14, 15 and 29 in pivot bearings 27 and 28 on a holder 18 fixed to the machine. The deflection rollers 6 and 8 are mounted on one side so as to be free-floating on a support plate 20, which in turn is held pivotably at the free ends of the coupling rods 16 and 17. Furthermore, a linear drive device 19 is provided which is connected to the end of the support plate 20 which is remote from the first deflection roller 6. The multi-joint mechanism is designed and in particular has such a forced guidance that the linear drive movement of the drive device 19 is converted into a pivoting movement of the entire multi-joint mechanism with a pivot axis C tangent to the surface of the first deflection roller 6. As a result, the angle of the deflecting rollers 6 and 8 can be changed relative to the wrapping material web 2 deflected thereon, the pivot axis C ideally lying in the wrapping material web 2, preferably in the central longitudinal axis of the wrapping material web 2, so that despite the pivoting of the first deflecting roller 6 there are no tensions in the wrapping material web 2 and also no stresses are introduced into the multiple width wrapping material web 1 in advance. So that the pivot axis C is tangent to the surface of the deflecting roller 6, it is important that the center points of the pivot bearings 27 and 28 on the machine-fixed holder 18 are arranged on a straight connecting line tangent to the surface of the deflecting roller 6. If the first deflection roller grouping 4 is pivoted, the straight line connecting the center points of the pivot bearings 27 and 28 does not run tangentially through the surface of the deflection roller 6 after pivoting, but instead approximately through the pivot axis C. Furthermore, the pivot bearings 27 and 28 on the holder 18 must be as follows be arranged so that the distances D of the centers of the pivot bearings 27 and 28 from the centers of the pivot bearings 23 and 25 in the projection in the direction of the connecting straight line correspond to the distance D between the center of the pivot bearing 22 and the pivot axis C in the direction of the connecting straight line.

Durch den beschriebenen Verstellmechanismus kann neben der Veränderung des Spreizabstandes für verschiedene Breiten der Hüllmaterialbahnen 2 und 3 auch eine Regelung der Kantenlage der Hüllmaterialbahnen 2 und 3 verwirklicht werden.By means of the described adjustment mechanism, in addition to changing the spreading distance for different widths of the wrapping material webs 2 and 3, regulation of the edge position of the wrapping material webs 2 and 3 can also be achieved.

Dabei ist es für die Kantenregelung wichtig, dass die Umlenkrollengruppierungen 4 und 5 unabhängig voneinander verschwenkt werden können, während für eine reine Veränderung des Spreizabstandes auch eine gemeinsame Verstelleinrichtung denkbar wäre.It is important for the edge control that the deflection roller groups 4 and 5 can be pivoted independently of one another, while a common adjusting device would also be conceivable for a pure change in the spreading distance.

Die Zuführrichtungen I und III der Hüllmaterialbahnen 2 und 3 sind in der Fig. 2 von oben durch die gestrichelten Linien zu erkennen, welche in diesem Fall gleichzeitig die Mittellinien der Hüllmaterialbahnen 2 und 3 sind. Die Mittellinien der Hüllmaterialbahnen 2 und 3 verlaufen parallel zueinander und weisen einen der einfachen Breite der Hüllmaterialbahnen 2 oder 3 entsprechenden Abstand zueinander auf. Beim Durchlaufen durch die Umlenkrollengruppierungen 4 und 5 werden die Hüllmaterialbahnen 2 und 3 seitlich nach außen versetzt, so dass sie anschließend in einem größeren Abstand parallel zueinander ausgerichtet sind, was durch die gestrichelten Linien der Abführrichtungen II und IV zu erkennen ist. Die Umlenkrollengruppierungen 4 und 5 weisen Umlenkrollen 6 und 8 bzw. 7 und 9 mit einem identischen Abstand zueinander, einem identischen Durchmesser und einem identischen Relativwinkel zueinander auf. Dadurch durchlaufen die Hüllmaterialbahnen 2 und 3 in den Umlenkrollengruppierungen 4 und 5 eine identische Wegstrecke, und werden bei identischer spiegelsymmetrischer Ausrichtung der Umlenkrollengruppierungen 4 und 5 abgesehen von dem Versatz in Transportrichtung um dieselbe Wegstrecke symmetrisch nach außen versetzt.The feed directions I and III of the wrapping material webs 2 and 3 are shown in FIG Fig. 2 can be seen from above by the dashed lines, which in this case are at the same time the center lines of the wrapping material webs 2 and 3. The center lines of the wrapping material webs 2 and 3 run parallel to one another and are spaced apart from one another corresponding to the single width of the wrapping material webs 2 or 3. When passing through the pulley groupings 4 and 5, the wrapping material webs 2 and 3 are laterally offset outwards so that they are then aligned parallel to one another at a greater distance, which can be seen by the dashed lines of the discharge directions II and IV. The deflection roller groupings 4 and 5 have deflection rollers 6 and 8 or 7 and 9 with an identical distance from one another, an identical diameter and an identical relative angle to one another. As a result, the wrapping material webs 2 and 3 in the deflection roller groupings 4 and 5 run an identical distance, and are offset symmetrically outwards by the same distance apart from the offset in the transport direction with an identical mirror-symmetrical alignment of the deflection roller groupings 4 and 5.

In der Fig. 4 sind die erforderlichen Abstände der Schwenklager 27,28,21,22,23,24,25 und 26 zueinander und zu der Schwenkachse C der Hüllmaterialbahn 2 näher dargestellt, welche eingehalten werden müssen, damit die Zwangsführung bei einer linearen Verstellbewegung zu einem Verschwenken der Hüllmaterialbahn 2 um die Schwenkachse C führt. Dabei werden die Abstände nachfolgend in der Stellung der nicht verschwenkten Umlenkrollengruppierung beschrieben, d.h. die Koppelstangen 14 und 15 bzw. 16 und 17 sind paarweise parallel zueinander ausgerichtet, und die ersten Koppelstangen 14,15 sind senkrecht zu den zweiten Koppelstangen 16,17 ausgerichtet. Die nachfolgend beschriebenen Abstände beziehen sich jeweils auf die Schwenkzentren bzw. die Schwenkachsen der Schwenklager 27,28,21,22,23,24,25 und 26, welche bei einer Zapfenlagerung der Mittenachse des Lagerzapfens entsprechen. Sofern eine andere Art der Schwenklagerung realisiert werden soll, müssen die Abstände stattdessen auf das Schwenkzentrum des Schwenklagers bezogen werden. Zur Vereinfachung des Verständnisses der Erfindung werden die Abstände nur allgemein als Abstände der Schwenklager 27,28,21,22,23,24,25 und 26 definiert, wobei eigentlich die jeweiligen Schwenkachsen gemeint sind.In the Fig. 4 the required distances of the pivot bearings 27,28,21,22,23,24,25 and 26 to each other and to the pivot axis C of the wrapping material web 2 are shown in more detail, which must be observed so that the forced guidance in a linear adjustment movement to pivot the wrapping material web 2 around the pivot axis C. The distances are described below in the position of the non-pivoted deflection roller grouping, ie the coupling rods 14 and 15 or 16 and 17 are aligned in pairs parallel to one another, and the first coupling rods 14, 15 are aligned perpendicular to the second coupling rods 16, 17. The following described Distances relate in each case to the pivot centers or the pivot axes of the pivot bearings 27, 28, 21, 22, 23, 24, 25 and 26, which correspond to the center axis of the bearing pin in the case of a journal bearing. If another type of pivot bearing is to be implemented, the distances must instead be related to the pivot center of the pivot bearing. To simplify the understanding of the invention, the distances are only generally defined as the distances between the pivot bearings 27, 28, 21, 22, 23, 24, 25 and 26, which actually mean the respective pivot axes.

Der bereits in der Fig. 3 beschriebene Abstand D sollte in etwa der Breite der zu verschwenkenden Hüllmaterialbahn 2 oder 3 entsprechen. Außerdem sollte der Abstand E der Mittelpunkte der Schwenklager 22,23 und 25 in Transportrichtung der Hüllmaterialbahnen 2 und 3 in etwa dem Abstand D entsprechen. Bei einer beispielhaften Breite der Hüllmaterialbahnen 2 und 3 von 30 mm, betragen die Abstände D und E damit in etwa 30 mm. Der Abstand F der Mittelpunkte der Schwenklager 21,24,26 zu den Mittelpunkten der Schwenklager 22,23 und 25 sollte wesentlich größer sein als der Abstand E, insbesondere sollte der Abstand F 4 bis 10 mal so groß wie der Abstand E bemessen sein. Die Abstände G zwischen den Mittelpunkten der Schwenklager 21 und 24 und zwischen dem Mittelpunkt des Schwenklagers 27 und der Schwenkachse C in der Projektion senkrecht zu der Transportrichtung der Hüllmaterialbahnen 2 und 3 sollten identisch sein und in etwa dem 1,5-fachen des Abstandes D entsprechen. Der Abstand H zwischen den Mittelpunkten der Schwenklager 23 und 25 sollte ferner identisch zu dem ebenfalls als H gekennzeichneten Abstand zwischen den Mittelpunkten der Schwenklager 27 und 28 sein, welcher außerdem ca. dem 2-fachen des Abstandes D betragen sollte.The one already in the Fig. 3 Distance D described should correspond approximately to the width of the wrapping material web 2 or 3 to be pivoted. In addition, the distance E between the centers of the pivot bearings 22, 23 and 25 in the transport direction of the wrapping material webs 2 and 3 should approximately correspond to the distance D. With an exemplary width of the wrapping material webs 2 and 3 of 30 mm, the distances D and E are thus approximately 30 mm. The distance F of the center points of the pivot bearings 21, 24, 26 to the centers of the pivot bearings 22, 23 and 25 should be significantly greater than the distance E, in particular the distance F should be 4 to 10 times as large as the distance E. The distances G between the centers of the pivot bearings 21 and 24 and between the center of the pivot bearing 27 and the pivot axis C in the projection perpendicular to the transport direction of the wrapping material webs 2 and 3 should be identical and approximately 1.5 times the distance D. . The distance H between the centers of the pivot bearings 23 and 25 should also be identical to the distance, also identified as H, between the centers of the pivot bearings 27 and 28, which should also be approximately twice the distance D.

Damit das Gesamtsystem nicht überbestimmt ist, kann eines der Schwenklager 23,24,25 oder 26 entfallen, wobei der Entfall des Schwenklagers 26 sich besonders anbieten würde. Andererseits kann durch die bewusste Überbestimmtheit des Gesamtsystems auch eine zusätzliche Stabilität und Steifigkeit in den Vielgelenkmechanismus eingebracht werden. Da die Verstellbewegungen eher in kleineren Verstellwinkeln zu sehen sind, ist die erhöhte Steifigkeit für die Verstellbewegung nicht von Nachteil.So that the overall system is not overdetermined, one of the pivot bearings 23, 24, 25 or 26 can be omitted, with the omission of the pivot bearing 26 being particularly useful. On the other hand, through the deliberate overdetermination of the overall system, additional stability and rigidity can also be introduced into the multi-joint mechanism. Since the adjustment movements tend to be seen at smaller adjustment angles, the increased rigidity is not a disadvantage for the adjustment movement.

Durch die vorgeschlagene Lösung kann sichergestellt werden, dass die Schwenkachse C der Hüllmaterialbahn 2 während des Verschwenkens der Umlenkrollengruppierung 4 in der Hüllmaterialbahn 2 bleibt und nicht aus dieser herausläuft. Dabei kann die Umlenkrolle 6 mit der anliegenden Hüllmaterialbahn 2 und der darin angeordneten Schwenkachse C geringfügig in Transportrichtung oder entgegen der Transportrichtung der Hüllmaterialbahn 2 bewegt werden. Ferner kann die Schwenkachse C in der Hüllmaterialbahn 2 auch geringfügig seitlich aus der Längsmittelachse der Hüllmaterialbahn herauswandern. Wichtig ist nur, dass die Schwenkachse C in der Hüllmaterialbahn 2 bleibt, damit Spannungen nur in einer vernachlässigbaren Größenordnung in den Vorlauf und Nachlauf der Hüllmaterialbahn 2 eingebracht werden. Durch die vermiedenen Spannungen kann die Kantenlage der Hüllmaterialbahn 2 erheblich genauer geregelt werden und der Hüllmaterialbahnlauf ist wesentlich ruhiger und kontrollierter.The proposed solution can ensure that the pivot axis C of the wrapping material web 2 remains in the wrapping material web 2 during the pivoting of the deflection roller grouping 4 and does not run out of it. The deflection roller 6 with the adjacent wrapping material web 2 and the pivot axis C arranged therein can be moved slightly in the transport direction or against the transport direction of the wrapping material web 2. Furthermore, the pivot axis C in the wrapping material web 2 can also wander slightly laterally out of the longitudinal center axis of the wrapping material web. It is only important that the pivot axis C remains in the wrapping material web 2 so that stresses are only introduced into the leading and trailing of the wrapping material web 2 in a negligible order of magnitude. As a result of the avoided tensions, the edge position of the wrapping material web 2 can be regulated much more precisely and the wrapping material web run is much smoother and more controlled.

Dabei ist es für den Vielgelenkmechanismus von besonderer Bedeutung, dass die Abstände D identisch und die Abstände E identisch sind, damit die Schwenkachse C der Verstellbewegung in etwa in der an den ersten Umlenkrollen 6 und 7 anliegenden Hüllmaterialbahn 2 oder 3 verläuft. Der Radius der Verstellbewegung entspricht dabei dem Abstand zwischen den Schwenklagern 25 und 28 bzw. zwischen den Schwenklagern 23 und 27, welcher dem Abstand zwischen der Schwenkachse C und dem Schwenklager 22 entspricht. Dadurch wird die Schwenkachse C zumindest wesentlich dichter an die an den ersten Umlenkrollen 6 oder 7 anliegenden Hüllmaterialbahnen 2 oder 3 herangelegt, als dies mit den im Stand der Technik bekannten Lösungen möglich war.It is of particular importance for the multi-joint mechanism that the distances D are identical and the distances E identical so that the pivot axis C of the adjustment movement runs approximately in the wrapping material web 2 or 3 resting on the first deflection rollers 6 and 7. The radius of the adjustment movement corresponds to the distance between the pivot bearings 25 and 28 or between the pivot bearings 23 and 27, which corresponds to the distance between the pivot axis C and the pivot bearing 22. As a result, the pivot axis C is placed at least significantly closer to the wrapping material webs 2 or 3 resting on the first deflection rollers 6 or 7 than was possible with the solutions known in the prior art.

Durch den beschriebenen Vielgelenkmechanismus kann der Lauf der Hüllmaterialbahnen 2 und 3 wesentlich genauer geregelt und wesentlich ruhiger gestaltet werden. Der beschriebene Vielgelenkmechanismus stellt unabhängig von der versetzten Anordnung der Umlenkrollengruppierungen 4 und 5 bzw. der terrassenartigen Anordnung derselben aufgrund der verringerten Spannungen in den Hüllmaterialbahnen 2 und 3 eine wesentliche Verbesserung des Hüllmaterialbahnlaufs und der Kantenregelung der Hüllmaterialbahnen 2 oder 3 dar, und kann damit als ein selbstständiger Erfindungsgedanke angesehen werden.By means of the multi-joint mechanism described, the course of the wrapping material webs 2 and 3 can be regulated much more precisely and made much quieter. The multi-joint mechanism described represents, regardless of the offset arrangement of the deflection roller groupings 4 and 5 or the terrace-like arrangement of the same due to the reduced stresses in the wrapping material webs 2 and 3, a significant improvement in the wrapping material web run and the edge control of the wrapping material webs 2 or 3, and can thus be used as a independent inventive idea.

In den Fig. 5 und Fig. 6 ist eine weiterentwickelte Spreizvorrichtung zu erkennen, welche einen bereits beschriebenen identischen Vielgelenkmechanismus und zwei Umlenkrollengruppierungen 4 und 5 aufweist. Die weiterentwickelte Lösung unterscheidet sich von dem Ausführungsbeispiel der Fig. 3 dadurch, dass die Antriebseinrichtung 19 hier durch zwei unabhängig voneinander ansteuerbare Servomotore gebildet ist, welche jeweils über ein Exzentergetriebe 30 mit einer Koppelstange 16 der den Umlenkrollengruppierungen 4 und 5 zugeordneten Vielgelenkmechanismen verbunden sind. Dabei ist jeder der Umlenkrollengruppierungen 4 und 5 ein eigener erfindungsgemäß ausgebildeter Vielgelenkmechanismus zugeordnet, so dass die Umlenkrollengruppierungen 4 und 5 getrennt voneinander über jeweils eine eigene Koppelstange 16 verstellt werden können. Die in der Darstellung der Fig. 5 rechte und in der Darstellung der Fig. 6 hintere Umlenkrollengruppierung 5 weist erkennbar einen eigenen und identischen Vielgelenkmechanismus auf, welcher der Übersicht halber nicht mit Bezugszeichen versehen wurde.In the Fig. 5 and Fig. 6 a further developed spreading device can be seen, which has an identical multi-joint mechanism and two deflection roller groupings 4 and 5, which have already been described. The further developed solution differs from the embodiment of FIG Fig. 3 in that the drive device 19 is formed here by two independently controllable servomotors which are each connected via an eccentric gear 30 to a coupling rod 16 of the multi-joint mechanisms assigned to the deflection roller groups 4 and 5. Each of the deflection roller groupings 4 and 5 is assigned its own multi-joint mechanism designed according to the invention, so that the deflection roller groupings 4 and 5 can be adjusted separately from one another via their own coupling rod 16. The ones in the representation of the Fig. 5 right and in the representation of the Fig. 6 The rear deflection roller grouping 5 clearly has its own and identical multi-joint mechanism which, for the sake of clarity, has not been provided with reference symbols.

Ferner ist eine Trennwand 31 mit einer oder mehreren Aussparungen 34 vorgesehen, welche eine Bedienerseite 32 von einer Antriebsseite 33 trennt. Die Spreizvorrichtung durchgreift mit den Koppelstangen 16 und 17 die Aussparungen 34, so dass die Umlenkrollengruppierungen 4 und 5 auf der Bedienerseite 32 der Trennwand 31 angeordnet sind, während die Servomotore, die Exzentergetriebe 30, die Koppelstangen 14 und 15 und die Koppelstangen 16 und 17 mit den die Aussparungen 34 nicht durchgreifenden Abschnitten auf der Antriebsseite 33 der Anlage angeordnet sind. Dadurch kann der Bediener eigensicher vor einem unbeabsichtigten Eingriff in die Vielgelenkmechanismen und die Servomotore auf der Antriebsseite 33 geschützt werden. Ferner können die auf der Antriebsseite 33 angeordneten Bauteile vor mechanischen Einwirkungen von der Bedienerseite 32 geschützt werden. Dazu ist es von besonderem Vorteil, dass die Servomotore über die Exzentergetriebe 30 an die Enden der Koppelstangen 16 angeschlossen sind, welche die Antriebsbewegung durch die Aussparungen 34 der Trennwand 31 hindurch auf die auf der Bedienerseite angeordneten Tragplatten 20 bzw. die daran gehaltenen Umlenkrollen 6,7,8 oder 9 übertragen. Die Servomotore können dadurch in einem Abstand zu den auf der Bedienerseite 32 angeordneten Tragplatten 20 und den Umlenkrollen 6,7,8 und 9 auf der Antriebsseite 33 angeordnet werden.Furthermore, a partition 31 with one or more recesses 34 is provided, which separates an operator side 32 from a drive side 33. the Spreader reaches through the recesses 34 with the coupling rods 16 and 17, so that the pulley groupings 4 and 5 are arranged on the operator side 32 of the partition 31, while the servomotors, the eccentric gear 30, the coupling rods 14 and 15 and the coupling rods 16 and 17 with the the recesses 34 non-penetrating sections are arranged on the drive side 33 of the system. As a result, the operator can be protected intrinsically from unintentional intervention in the multi-joint mechanisms and the servomotors on the drive side 33. Furthermore, the components arranged on the drive side 33 can be protected from mechanical influences from the operator side 32. For this purpose, it is particularly advantageous that the servomotors are connected via the eccentric gears 30 to the ends of the coupling rods 16, which drive the drive movement through the recesses 34 of the partition 31 onto the support plates 20 arranged on the operator's side or the deflection rollers 6 held on them, 7,8 or 9 transferred. The servomotors can thereby be arranged at a distance from the support plates 20 arranged on the operator side 32 and the deflection rollers 6, 7, 8 and 9 on the drive side 33.

Dir Umlenkrollengruppierungen 4 und 5 sind in Transportrichtung der Hüllmaterialbahnen 2 und 3 ebenfalls versetzt zueinander angeordnet, wobei die Umlenkrollengruppierungen 4 und 5 hier nicht terrassenartig angeordnet sind, sondern stattdessen in ungefähr vertikaler Ausrichtung der Tragplatten 20 in einem Abstand nebeneinander angeordnet sind.The pulley groupings 4 and 5 are also offset from one another in the transport direction of the wrapping material webs 2 and 3, the pulley groupings 4 and 5 not being arranged in a terraced manner here, but instead being arranged in an approximately vertical orientation of the support plates 20 at a distance next to one another.

Claims (17)

  1. Spreading device for two or more wrapping material webs (2, 3) for producing at least two parallel rods of products of the tobacco processing industry, which spreading device comprises
    - a number of deflector roll groups (4, 5) corresponding to the number of wrapping material webs (2, 3), each of which comprises several deflector rolls (6, 7, 8, 9) by which a respective wrapping material web (2, 3) is deflected on different sides, wherein
    - the deflector rolls (6, 7, 8, 9) are inclined in such a way that the wrapping material web (2, 3) deflected thereby leaves the deflector roll group (4, 5) with a lateral parallel offset in relation to the feeding direction (I, III), wherein
    - the deflector roll groups (4, 5) are arranged offset from each other in the conveying direction of the wrapping material webs (2, 3),
    characterized in that
    each deflector roll group (4, 5) can be pivoted around a pivot axis (C) extending through the wrapping material web (2, 3) resting against the first deflector roll (6, 7) .
  2. Spreading device according to claim 1, characterized in that
    - the deflector roll groups (4, 5) are arranged in a terraced manner one above the other.
  3. Spreading device according to any one of the preceding claims, characterized in that
    - the deflector rolls (6, 7, 8, 9) belonging to the same deflector roll group (4, 5) have an identical diameter and are arranged at an identical relative angle to each other.
  4. Spreading device according to any one of the preceding claims, characterized in that
    - the distances between the deflector rolls (6, 7, 8, 9) belonging to the same deflector roll group (4, 5) are identical in the different deflector roll groups (4, 5).
  5. Spreading device according to any one of the preceding claims, characterized in that
    - the feeding direction (I, III) and the removing direction (II, IV) of the wrapping material webs (2, 3) to and away from the deflector roll groups (4, 5) are aligned parallel to each other.
  6. Spreading device according to any one of the preceding claims, characterized in that
    - the pivot axis (C) extends through the longitudinal central axis of the wrapping material web (2, 3).
  7. Spreading device according to any one of the preceding claims, characterized in that
    - each deflector roll group (4, 5) can be adjusted by an adjusting device formed by a multiple joint mechanism.
  8. Spreading device according to claim 7, characterized in that
    - the multiple joint mechanism transmitting the adjusting motion with two first coupling bars (14, 15) is mounted in two stationary pivot bearings (27, 28).
  9. Spreading device according to claim 8, characterized in that
    - the stationary pivot bearings (27, 28) are arranged in such a way that its pivot axes lie on a straight line extending through the wrapping material web (2, 3) resting against the first deflector roll (6, 7).
  10. Spreading device according to one of the claims 8 or9, characterized in that
    - the first coupling bars (14, 15, 29) are coupled to each other via at least two second coupling bars (16, 17) at the ends of which a support plate (20) is pivot-mounted in a respective pivot bearing (21, 22), wherein
    - the deflector rolls (6, 7, 8, 9) are arranged on the support plate (20).
  11. Spreading device according to claim10, characterized in that
    - the second coupling bars (16, 17) are mounted in respective pivot bearings (23, 24, 25, 26) opposite to the first coupling bars (14, 15, 29), and
    - at least the pivot bearings (23, 25) closest to the stationary pivot bearings (27, 28) are arranged between the first and the second coupling bars (14, 15, 16, 17, 29) in such a way that, perpendicular to the conveying direction of the wrapping material web (2, 3), they are located at a distance (D) from the stationary pivot bearings (27, 28) that corresponds to the distance (D) between the pivot axis (C) of the wrapping material web (2) and the closest pivot bearing (22) between the support plate (20) and one of the second coupling bars (16, 17) perpendicular to the conveying direction of the wrapping material web (2).
  12. Spreading device according to claim 10 or 11, characterized in that
    - the distance (D) between the pivot axis (C) and the closest pivot bearing (22) between the support plate (20) and one of the second coupling bars (16, 17) perpendicular to the conveying direction of the wrapping material web (2) corresponds to the distance (E) between the stationary pivot bearings (27, 28) and the closest pivot bearings (23, 25) between the coupling bars (14, 15, 16, 17, 29) and to the distance (E) between the pivot axis (C) and the closest pivot bearing (22) between the support plate (20) and one of the second coupling bars (16, 17) in the conveying direction of the wrapping material web (2).
  13. Spreading device according to one of the claims 10 to 12, characterized in that
    - the second coupling bars (16, 17) are mounted in respective pivot bearings (23, 24, 25, 26) opposite to the first coupling bars (14, 15, 29), and
    - the distance (H) between the pivot bearings (23, 24, 25, 26) of the second coupling bars (16, 17) corresponds to the distance (H) between the stationary pivot bearings (27, 28).
  14. Spreading device according to one of the claims 10 to13, characterized in that
    - the second coupling bars (16, 17) are mounted in respective pivot bearings (23, 24, 25, 26) opposite to the first coupling bars (14, 15, 29), and
    - the distance (G) between the stationary pivot bearing (27) closest to the pivot axis (C) of the wrapping material web (2) and the pivot axis (C) of the wrapping material web (2) corresponds to the distance (G) between the pivot bearing (22) between the support plate (20) and one of the second coupling bars (16, 17) closest to the pivot axis (C) from the pivot bearing (23) between one of the first and the second coupling bars (14, 15, 16, 17, 29) closest to the stationary pivot bearing (27).
  15. Spreading device according to one of the claims 10 to 14, characterized in that
    - the deflector roll groups (4, 5) can be adjusted by a drive device (19) coupled to the second coupling bars (16, 17).
  16. Apparatus comprising a spreading device according to claim 15, characterized in that
    - the apparatus comprises a separating wall (31),
    - the spreading device extends through the separating wall (31), and
    - the deflector roll groups (4, 5) are arranged on an operator side (32) of the separating wall (31), and
    - the drive device (19) is arranged on a drive side (33) of the separating wall (31).
  17. Apparatus according to claim 16, characterized in that
    - the separating wall (31) comprises recesses (34), and
    - the multiple joint mechanism with the second coupling bars (16, 17) reaches through the recesses (34) of the separating wall (31), and
    - the first coupling bars (14, 15) of the multiple joint mechanism are arranged on the drive side (33), and
    - the support plates (20) of the multiple joint mechanism are arranged on the operator side (32) of the separating wall (31).
EP14184043.9A 2013-09-10 2014-09-09 Spreading device for two or more webs of wrapping material for producing at least two parallel rods of products for the tobacco industry and a machine with said spreading device Active EP2888954B2 (en)

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PL14184043T PL2888954T5 (en) 2013-09-10 2014-09-09 Spreading device for two or more webs of wrapping material for producing at least two parallel rods of products for the tobacco industry and a machine with said spreading device

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DE102013218097.7A DE102013218097A1 (en) 2013-09-10 2013-09-10 Spreading device for two or more wrapping material webs for the production of at least two parallel strands of products of the tobacco processing industry

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DE102015001714A1 (en) * 2015-02-13 2016-08-18 Hauni Maschinenbau Ag Device for the production of products of the tobacco processing industry
DE102017106992A1 (en) 2017-03-31 2018-10-04 Hauni Maschinenbau Gmbh Process for producing at least two-ply tubular strands of the tobacco-processing industry and apparatus for producing at least two-ply strands of the tobacco-processing industry

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DE19846894A1 (en) † 1998-10-13 2000-04-20 Topack Verpacktech Gmbh Longitudinal cutter incorporates store, accumulator loop, guide and cutting tool

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EP2888954B1 (en) 2016-11-02
EP2888954A1 (en) 2015-07-01
PL2888954T5 (en) 2021-11-22
PL2888954T3 (en) 2017-04-28
CN104413543B (en) 2018-09-04
CN104413543A (en) 2015-03-18
DE102013218097A1 (en) 2015-03-12

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