EP3088308A1 - Method and device for producing blanks for an inner wrapper of a cigarette group - Google Patents

Abstract

The invention relates to an apparatus and a method for producing blanks (10) for an inner covering of a cigarette group (12). In this case, the blanks (10) are separated from a continuous material web (24), which is provided at predetermined intervals with imprints (21). The position of the imprints (21) is checked via a print web reader (43) assigned to the material web (24) and the web speed of the material web (24) is changed to compensate for misalignments. According to the invention, the material web (24) is passed through an embossing device (60) before the blanks (10) are separated, wherein the material web (24) is embossed (22) or embossed with spaced-apart longitudinally of the material web (24) Areas are varied and wherein the web speed is varied to compensate for misalignments, while the material web (24) for producing non-embossed areas (61) is guided freely by the embossing device (60). This solution has the advantage that the embossing speed of the embossing device does not have to be changed together with the web speed when compensating misalignments of the material web. It is thus possible to vary the web speed, while the embossing device continues to work on the machine cycle with unchanged speed. Furthermore, the invention is concerned with measures for retrofitting existing packaging machines.

Description

The invention relates to a method for producing blanks for an inner envelope of a group of cigarettes, wherein the blanks are separated from a continuous web of material, which is provided at predetermined intervals with imprints, and wherein the position of the prints is checked via a web of material associated print mark reader, and wherein the path position is changed to compensate for misalignments, according to the preamble of claims 1, 3 or 6. The invention further relates to an apparatus for performing the method according to the preamble of claims 7, 10 or 11.

Methods and devices of the aforementioned type are known in different embodiments from practice. In this case, the position of print marks on the material web is scanned via a material web associated print mark reader and ensured by varying the feed rate of the web that a working in the machine cycle cutting member, the blanks so separated from the material web that the printing at a designated location on the separated Cut is positioned. Consequently, the web position designates the relative position of the prints in the longitudinal direction of the web in relation to the machine position or in the machine cycle operating organs, such as cutting devices, or the position of the cigarette group to be packaged, etc.

Proceeding from this, the object of the invention is to further develop the method and apparatus of the type mentioned in the introduction, in particular with regard to the production of blanks which have partial or complete embossing. Another object of the present invention is to propose a method and a corresponding device which allows the simplest possible change between the production of embossed and unembossed blanks.

To solve the abovementioned objects, a method according to the invention is proposed in which the material web is passed through an embossing device before the blanks are severed, wherein the material web is provided with imprints or embossed regions spaced apart from one another in the longitudinal direction of the material web and wherein the web position compensates is changed by misalignments, in particular by changing the web speed, while the material web for the production of non-embossed areas is guided freely through the embossing device. This solution has the advantage that the embossing speed of the embossing device does not have to be changed together with the web speed when compensating misalignments of the material web. It is thus possible to change the web position, that is to say the relative position of the printings in relation to the machine position, while the embossing device continues to work on the machine cycle at an unchanged speed.

A further method for achieving the above-mentioned object provides that the material web is also passed through an embossing device with two embossing rollers before the cutting of the blanks, wherein the material web is provided in the longitudinal direction thereof with a continuous embossing. In contrast to the solution mentioned above, it is further provided that the web position is changed to compensate for misalignments by changing the rotational speed of the embossing rollers. This solution thus proposes that the embossing rollers themselves be used to advance the material web. Appropriately, a separate drive for the embossing device is used, which is not coupled to the machine cycle.

Deformations of the material web can preferably be determined by making a comparison with a target time at the time of passage of a print mark in the area of the print mark reader, the desired time being derived, in particular, from a machine angle, a machine cycle or the like, and in the case of deviations, the web speed by corresponding Control of a drive means for advancing the material web is changed.

The manufacturing method preferably provides that the material web is held on a reel and withdrawn therefrom and subsequently fed via deflection rollers of the embossing device and embossed therein and that the embossed material web is fed to a cutting device for separating individual blanks from the material web, whereupon the severed blanks are held ready to be carried by a group of cigarettes and subsequently folded around it.

In order to be able to change between the production of an embossed blank and an unembossed blank, it can be provided that the embossing rolls of one or each embossing roll pair are at least partially disengaged for producing an at least partially embossed material web, so that the material web passes freely between the embossing rolls of the or each embossing roll pair becomes.

A further alternative solution of the above-mentioned object provides that the material web is passed through a stamping device with two embossing rollers before the cutting of the blanks, wherein a peripheral surface of the embossing rollers for advancing or for advancing the material web is formed such that no embossing of the material web he follows. In this way, for example, a device operating according to the methods described above can be easily converted to produce unembossed blanks. This can be done, for example, that conventional embossing rollers are replaced by particular rubberized drive rollers. Preferably, the embossing rollers are driven by an independent drive, the drive speed is changed to adjust the feed rate of the embossing rollers.

An apparatus for carrying out the aforementioned method has the features of claim 7. It is therefore provided that the material web can be passed through an embossing device prior to the separation of the blanks with embossing or embossed areas, which are spaced apart in the longitudinal direction of the material web, and wherein the web position is changed by a drive means, to compensate for misalignments while the web is free to pass through the embossing means.

In order to pass the material web freely through the embossing rollers, it is preferably provided that a recess is formed on the circumference of at least one embossing roller of an embossing roller pair of the embossing device at least in regions such that the material web undergoes no embossing when passing through the embossing roller pair in this area. It is conceivable that the embossing rollers have a greater width than the material web and are always in engagement with each other in regions laterally of the material web or the recesses for producing the unembossed regions.

It is preferably provided that a drive roller is arranged upstream of the embossing roller pair for advancing the material web at least in the region of the embossing device, wherein a controllable drive means for the drive roller is provided, whose drive speed is variable to compensate for misalignments of the printing or embossing. In this solution, the drive is thus individually controllable and not coupled to the machine cycle, whereas in particular the embossing rollers and cutting members for separating the blanks from the material web are preferably driven coupled to the machine cycle speed.

According to a preferred development of the invention, it is provided that the embossing rollers of one or each pair of embossing rollers can be moved apart to produce an at least partially unembossed material web or corresponding blanks, wherein the embossing rollers are preferably each mounted on drive shafts whose rotational movement is coupled to one another such that the embossing rollers are synchronously driven even in the dispersed position.

Furthermore, the respective axles each gear wheels are assigned, which mesh with each other in the moved-apart position.

Preferably, in the region of at least one embossing roller, an adjustable deflection roller for the material web can be positioned, which is adjustable at least for the production of non-embossed material webs such that the material web does not bear against the circumference of the embossing rollers.

In a preferred embodiment of the invention it is provided that the embossing roller pair and the drive roller are formed with the drive means as an assembly or unit, wherein preferably the organs of the assembly are arranged in a common housing and / or on a common carrier. In this way it is also possible to retrofit existing devices in a simple manner, by the unit of drive, drive roller and embossing roller, and optionally pressure mark reader is installed.

Preferably, two successive embossing roller pairs are provided, which are arranged with an axial distance in the transport direction of the material web from one another, which corresponds to half the circumference of the embossing rollers and wherein the blanks to be separated are partially embossed in each embossing roller pair.

Further devices for carrying out one of the aforementioned methods have the features of claims 10 or 11. Accordingly, on the one hand, a device is proposed in which the embossing rollers serve to advance the material web. On the other hand, a device is proposed in which the solution described above is modified by exchanging the embossing rollers by drive rollers, so that unembossed blanks are produced. In both cases, the rotational or driving speed of the embossing or drive rollers by an independent drive can be changed to compensate for misalignments of the material web.

Preferably, it can be provided that the embossing device comprises two embossing rollers which form the embossing roller pair, wherein the embossing rollers are synchronously and preferably continuously driven in rotation and wherein in particular the circumference of the embossing rollers substantially corresponds to the longitudinal extent of the blanks within the material web.

Additionally or alternatively, it can be provided that the embossed material web can be fed to the cutting device for separating the blanks by a preferred pair of rollers, wherein both a separating cut for separating the blanks, and a perforation cut to form a transverse to the cutting longitudinal axis in the cutting device preferably by means of a knife roller Perforation line is feasible.

In addition, it can be provided that the embossing rollers is assigned a separate drive whose drive speed is variable in particular independently of the machine cycle to compensate for misalignments.

Further details of the invention will become apparent from the dependent claims and the description otherwise.

Fig. 1

eine Draufsicht auf einen ausgebreiteten Zuschnitt für eine Innenumhüllung einer Zigarettengruppe,

Fig. 2

ein alternatives Ausführungsbeispiel des Zuschnitts gemäß Fig. 1,

Fig. 3

eine Seitenansicht einer Vorrichtung zum Verpacken von Zigaretten in einer Seitenansicht,

Fig. 4

ein Teil der Vorrichtung gemäß Fig. 3 in vergrößerter Darstellung,

Fig. 5

eine Prägeeinrichtung der Vorrichtung in einer Konfiguration zur Herstellung von geprägten Zuschnitten,

Fig. 6

die Prägeeinrichtung gemäß Fig. 5 in einer Konfiguration zur Herstellung von ungeprägten Zuschnitten,

Fig. 7

ein Horizontalschnitt im Bereich der Prägeeinrichtung entlang Schnittlinie VII-VII in Fig. 4,

Fig. 8

ein zweites Ausführungsbeispiel der Erfindung in einer Darstellung analog zu Fig. 4 und

Fig. 9

eine Variante des ersten Ausführungsbeispiels mit zwei aufeinanderfolgend angeordneten Prägewalzenpaaren.

Preferred embodiments of the invention are explained below with reference to the drawing. In this show:

Fig. 1

a top view of a spread-out blank for an inner wrapper of a cigarette group,

Fig. 2

an alternative embodiment of the blank according to Fig. 1 .

Fig. 3

a side view of a device for packaging cigarettes in a side view,

Fig. 4

a part of the device according to Fig. 3 in an enlarged view,

Fig. 5

an embossing device of the device in a configuration for the production of embossed blanks,

Fig. 6

the embossing device according to Fig. 5 in a configuration for producing unembossed blanks,

Fig. 7

a horizontal section in the region of the embossing device along section line VII-VII in Fig. 4 .

Fig. 8

A second embodiment of the invention in a representation analogous to Fig. 4 and

Fig. 9

a variant of the first embodiment with two successively arranged embossing roller pairs.

The in the Fig. 3 to 9 shown devices are used to produce blanks 10, 11 as an inner envelope of a cigarette group 12, so as an outer wrapping of a package contents in a cigarette pack, for example of the type folding box.

Blanks 10, 11 of this type are made of paper or a paper-like material, which may optionally be provided with a metallic coating. In these blanks 10, 11, a block-shaped group of cigarettes is wrapped and enclosed by folding flaps. In Fig. 1 and 2 fold lines 13 are shown schematically at which along the blank 10, 11 is folded around the cigarette group 12 around.

The blanks 10, 11 are folded so that in the inner sheath a closed bottom wall 14, a front wall 15, a corresponding rear wall 16 is formed. An end wall is formed by trapezoidally folded folding tabs 17, which adjoin the front wall 15 and the rear wall 16 and partially overlap when folded blank 10, 11. Side walls of the inner sheath are formed by narrow folding tabs, which are arranged on both sides of the bottom wall 14, front wall 15 and rear wall 16. These include also in a lower portion of the blank 10, 11, namely adjacent to the bottom wall 14, trapezoidally folded side tabs 18. After folding the blanks 10, the side lobes 18 overlap each other in part.

An upper part of the front wall 15 of the inner wrapper is designed as a pull tab 19. This is limited by a lower transverse perforation line 20 which extends continuously in the region of the front wall 15 and the side flaps 18 adjoining on both sides. Details of the preparation of the pull tab 19 may European patent application EP 0 589 289 A1 are taken from the applicant to which reference is made for the purpose of full disclosure.

The finished blanks 10, 11 are further provided with a print 21 or a printed area. The printing 21 is located in the region of the front wall 15, namely above the perforation line 20.

A special feature of the blank 10 according to Fig. 1 is that it has an embossment 22. In the present case, the embossing 22 extends on the one hand above the perforation line 20 over the full width of the front wall 15 and the two-sided side tabs 18 and in the region of the folding tabs 17 for the end wall. In the area of the printing 21 no embossment 22 is present. In the section of the blank 10 described above, the embossment 22 is formed as a continuous embossed area, which extends in each case to the lateral edges of the blank. Furthermore, with a stamping 22 as a continuous embossed area is correspondingly an upper portion of the rear wall 16 and the adjacent side tabs 18 and Folding tabs 17 provided. An area 61 of the blank 11 located between the two embossments 21 is not embossed.

In the present case, the embossment 22 is positioned so that it extends over the regions of the inner blank which are visible when the cigarette packet is open, that is to say, for example, when the lid is opened. In addition, the embossment 22 is in this way in the region of the end wall of the inner sheath. The embossing of the blank 10 in this case ensures that the restoring forces of the multiply folded folding tabs 17, 18 are counteracted in this area. The inner wrapper can be folded in this way easier and has a lower tendency to unfold after the folding process again.

In addition to the embossing 22 described above, other elements may also be embossed in the blank 10, 11, for example an emblem 23. In the present case, this is arranged above the printing 21 in the region of the front wall 15.

The blank 11 according to Fig. 2 differs from the blank 10 in Fig. 1 in that it does not have any full-surface impressions 22. Only the emblem 23 is embossed. Alternatively, the emblem 23 may also be printed like the printing 21.

This embossment 22 is applied in the processing of the blanks 10, 11 as described below: The blanks 10, 11 for the inner sheath are in the present embodiments of a material web 24 in the region of a partially illustrated packaging machine for folding boxes ( Fig. 3 ) separated. The material web 24 is wound into a reel 25 and is prefabricated with regard to the printing 21 provided on the packaging machine, ie it is already provided at its place of manufacture, for example in a paper mill, with the imprints 21. The imprints 21 are provided at predetermined intervals in the longitudinal direction on the material web 24. The distance between the prints 21 corresponds to the length of a blank 10, 11th

So that the blanks 10, 11 can be separated in the packaging machine so that the printing 21 is always positioned at the same location in the region of the front wall 15, a corresponding control must take place. For this purpose, print marks 26 are attached to the material web 24. In the present case, the print marks 26 are located on a side flap 18 adjacent to the bottom wall 14. Like the print 21, the print marks 26 are also at a constant distance from one another in the longitudinal direction the web 24 are arranged one behind the other and are attached to the material web 24 during manufacture.

In the overview according to Fig. 3 It can be seen that the individual cigarettes are held in a memory 27 and inserted laterally into a cigarette turret 28. From the cigarette turret 28, a cigarette group 12 is laterally pushed out by carriers 29 and conveyed along a flat transport path and wrapped in the region of a cutting device 30 in the cut-out of the web 24 blanks 10, 11. In each case a blank 10, 11 is kept ready in an upright plane, such that the cigarette group 12 is moved in against the clamped blank 10, 11, taking along the blank 10, 11 and U-shaped folding of the same around the cigarette group 12 around. Subsequently, the blank 10, 11 is folded around the cigarette group 12 respectively.

Also in the region of the cutting device 30, a collar is placed on the cigarette group 12 before the wrapping of the cigarette group 12 with the blank 10, 11. The collars are like the blanks of a reel 31 unwound as a continuous web of material 32 and placed on the cigarette group 12 after the separation of individual collar. In the present case, two bobbins 31 are provided for the collars, with a reel 31 serving as a substitute bolus, which is accessed as soon as the other reel 31 is unwound.

The material web 24 for the blanks 10, 11 is initially guided starting from the reel 25 via a plurality of guide rollers 33, between which the material web 24 is guided in a zig-zag shape. This equipped with pulleys 33 area serves on the one hand to control the web tension, but can also be used as a web memory. Accordingly, the position of the guide rollers 33 can be changed to each other.

From the area of the deflection rollers 33, the material web 24 runs out approximately horizontally and is fed via a drive roller 34 and a further deflection roller 39 to an embossing device 60 with an embossing roller pair 35. Here, the embossing 22 described above and possibly the emblem 23 is mounted on the web 24. Subsequent to the embossing roller pair 35, the material web 24 is fed via a further deflection roller 40 in the horizontal direction of the cutting device 30. This has a pair of feed rollers 36, which feed the material web 24 a rotationally driven knife block 37. With the knife block 37 is on the one hand everyone Blank 10, 11 provided with a perforation 20 and subsequently separated from the web 24. While this separating cut is carried out, the blank 10, 11 is already slipping on a further conveying member, namely a lay-on roller 38. At the roll-up roller 38, the blank 10, 11 is held with negative pressure via suction holes, only in lateral areas, so that the cigarette group 12 are moved transversely to the conveying path of the blanks 10, 11 and through the lay-up roller 38 against the prepared blank 10, 11 can. Details of the separation of the blanks 10, 11 with the cutting device 30 result from the German patent application DE 198 59 949 A1 Applicant's Reference is made to the full disclosure.

The drive roller 34 is driven by a separate drive means 41, for example a servomotor ( Fig. 4 ). The drive roller 34 designed as a preferred roller is coupled to the servomotor via a drive belt 42. In order to compensate for misalignments of the material web 24, the drive means 41 is not coupled to the machine cycle, but freely variable with respect to the drive speed to slow down the feed or preference of the web 24 relative to the machine cycle or accelerate.

In the area of the drive means 41 and the drive roller 34, a print mark reader 43 is furthermore positioned with which the print marks 26 attached to the material web 24 are scanned. A misalignment of the web 24 is given when the print mark reader 43 does not register the passage of a print mark 26 at a given time. The predefined time results, for example, from a specific machine position or a specific machine angle.

A misalignment of the material web 24, so a mispositioning of the print 21 in the transport direction would lead without corrective intervention to a mispositioned embossing 22 and a corresponding faulty separation cut when separating the blanks 10, 11, since the embossing roller pair 35 and the cutting device 30 coupled to the machine cycle are. It is therefore provided that the web speed of the material web 24 is compensated in accordance with the detected print marks 26 by different drive speeds of the drive roller 34 before the web 24 passes into the region of the embossing roller pair 35.

A special feature in terms of the compensation of misalignments of the material web 24 is that this takes place while the material web 24 is not through the Embossing device 60 is embossed. The embossing roller pair 35 consists of two embossing rollers 44, 45. These are driven synchronously in the machine cycle. The embossing rollers 44, 45 are arranged so that their peripheral surfaces are at least partially engaged, so that the guided between the two embossing rollers 44, 45 web of material 24 in some areas an embossment 22 according to Fig. 1 receives. The peripheral surface of the embossing rollers 44, 45 is partially provided with small elevations and depressions, which lead to a flat embossment 22 of the web 24. The two embossing rollers 44, 45 are on these small projections and wells also engaged with each other.

To the in Fig. 1 In some embodiments, embossing 22 has to be applied, one of the two embossing rollers 44 has a recess 46 or recess extending over the circumference of embossing roller 44 (FIG. Fig. 7 ). In the recessed area, the peripheral surfaces of the embossing rollers 44, 45 are not adjacent to one another in the area of the material web 24, so that they are guided freely between the embossing rollers 44, 45. The relative position of the printing 21 is controlled via the print mark reader 43 and the drive roller 34 so that the embossment 22 is positioned at the correct position with respect to the printing 21. This also results in the correct positioning of the embossment 22 on the severed blank 10.

For attaching the emblem 23, a correspondingly configured elevation 47 is provided on the embossing roller 45 at the corresponding point.

A special feature with regard to the change of the web position to compensate for misalignments is that this only takes place while the material web 24 is guided freely through the embossing rolls 44, 45, ie during the region of the embossing roll 44 provided with the depression or recess 46 the embossing roll 45 is applied. The greater the unembossed areas 61 on the material web 24, the more time is available to compensate for misalignments of the printing 21. If the misalignments are very large or the unembossed regions 61 are very small, it may be necessary to accept that the compensation of the misalignment extends beyond the production of a plurality of blanks 10, 11.

Another special feature is that the servomotor or the drive means 41, the drive roller 34 and the embossing unit 60 and the embossing roller pair 35 together form a unit or assembly. This may also include the print mark reader 43. This unit may at least partially surrounded by a common housing or mounted on a common carrier. An advantage of this unit is, for example, that it is suitable for retrofitting existing packaging machines. In this way, packaging machines, on which normally unembossed or pre-embossed blanks for the innerliner are processed, can be converted, for example, by replacing drive rollers for the material web by the unit described above. Thus, instead of a first drive roller pair, the drive roller 34 and the servo motor are used, whereas a second drive roller pair is replaced by the embossing roller pair 35. For the embossing roller pair 35, the existing coupled to the machine cycle drive can be used. The separate drive for the drive roller 34 brings the unit with. In a simple case, only a power connection for the servomotor is required and a wiring with a control unit and possibly the print mark reader 43.

Further details of the structure and the drive of the embossing rollers 44, 45 emerge Fig. 5 to 7 , The embossing rollers 44, 45 are mounted on one side each on a bearing roller 48 and are driven by drive shafts 49. Laterally adjacent to the embossing rollers 44, 45, gear wheels 50 are provided on the drive shafts 49, which are engaged with each other, so that the embossing rollers 44, 45 are coupled together. In Fig. 5 This engagement of the gears 50 is shown laterally schematically.

In the production of the embossed blanks 10, the embossing rollers 44, 45 are also still on their peripheral surfaces engaged with each other. In order to ensure this engagement even when the material web 24 is passed freely between the embossing rolls 44, 45, the embossing rolls 44, 45 have a greater width than the material web 24. In this way, the peripheral surfaces of the embossing rollers 44, 45 on both sides of the material web 24 and the recess 46 are engaged with each other, so even if no embossing of the material web 24 takes place.

In order to be able to produce unembossed blanks 11 on the apparatus described above, it is provided that the two embossing rolls 44, 45 can be moved apart so that the material web 24 is continuously guided freely between the embossing rolls 44, 45. Such a situation is in Fig. 6 shown. In this case, the two embossing rollers 44, 45 or moved into an extended position. This can be done, for example, via an adjustable mounting of one of the two embossing rolls 44, 45. In this disengaged position it is provided that the gears 50 remain in engagement with each other, as laterally in Fig. 6 shown. To this In the disengaged position, the relative position of the embossing rollers 44, 45 is not lost to each other. An adjustment of the same after the moving together of the embossing rollers 44, 45 thus eliminated.

Furthermore, it is provided that in the disengaged position of the embossing rolls 44, 45 according to Fig. 6 the transport path of the material web 24 is changed. While in the normal position according to Fig. 5 the material web 24, starting from the deflection roller 39 in the region of the drive roller 34, is directed diagonally downwards directly onto the circumference of the embossing roller 45 and from there downwards over the lower deflection roller 40, the transport path of the material web 24 is set in the disengaged position according to FIG Fig. 6 changed by a further deflection roller 51. This deflection roller 51, coupled with the moving apart of the embossing rollers 44, 45, horizontally displaced so that the material web 24 is guided between the two guide rollers 51 and 40 in an upright web plane between the embossing rollers 44 and 45. The guide roller 51 can automatically when pushing the embossing rollers 44, 45 back to their position Fig. 5 be spent.

Alternatively to the above-described embossing of the material web 24 with an embossing roll pair 35 shows Fig. 9 a variant in which the material web 24 is successively embossed by two embossing roller pairs 35, 52. The first embossing roller pair 35 corresponds in structure to the above description. Also in the embossing roller pair 52, an embossing roller 53 has a recess 54. In the case of the other embossing roller 55 of the embossing roller pair 52, however, a protrusion for embossing the emblem 23 is missing.

As in the first embodiment, the circumference of the embossing rollers 44, 45; 53, 55 so dimensioned that it corresponds to the longitudinal extent of a blank 10, 11. The center distance of the two embossing roller pairs 35, 52 corresponds to half the circumference of the embossing rollers 44, 45; 53, 55. In this way, multiple embossings can be applied to the material web 24, for example first a flat embossing with a first pattern in certain areas and subsequently a second embossing with a deviating pattern in other areas. The embossing can also overlap. This depends essentially on the relative position of the recesses 46, 54 from each other. In the first embodiment, the embossing rollers 44, 45; 53, 55 of the two embossing roller pairs 35, 52 are moved apart separately or together to expose the embossment of the material web 24 through the first embossing roller pair 35 and / or the second embossing roller pair 52.

Further alternative embodiments of the device are described below and with reference to FIG Fig. 8 described. In comparison with Fig. 4 It can be seen that a separation of drive roller 34 and embossing roller pair 35 was omitted. Instead, the servomotor or the drive means 41 directly drives an embossing roller pair 56. This embossing roller pair 56 is used in this case as a pair of preferred rollers for transporting the web 24 and to compensate for misalignments of the print 21 of the web 24. Accordingly, the web 24 from the area of the guide rollers 33 by the two adjacent to each other at the periphery embossing rollers 57, 58th of the embossing roller pair 56 passed and from there directly from the feed roller pair 36 in the cutting device 30. When the embossing roll pair 56 is driven by the servomotor independently of the machine cycle, the web position can be changed by the embossing rollers 57, 58 to compensate for misalignments. However, the embossing rollers 57, 58 do not apply section-wise embossing 22 to the material web 24, as in FIG Fig. 1 but a continuous imprint. In this case, the emblem 23 must be dispensed with, or this must be printed on the material web 24 together with the imprint 21. As a result, the cigarette group 12 is wrapped in a blank 59, which is provided in the region of the front wall 15 with a print 21 and additionally has a over the entire length of the blank 59 extending embossing.

To deal with in Fig. 8 shown apparatus to produce unembossed blanks 11 in a simple manner, it is conceivable on the one hand, the two embossing rollers 57, 58 apart as in the first embodiment to move. Alternatively, it is also conceivable to replace the embossing rollers 57, 58 with rubberized drive rollers. In this case, unembossed blanks 11 are produced, or unembossed material webs 24 can be processed. <B> LIST OF REFERENCES: </ b> 10 cut 36 Preferred roller pair 11 cut 37 knife block 12 cigarette group 38 lay-on 13 fold line 39 idler pulley 14 bottom wall 40 idler pulley 15 front wall 41 drive means 16 rear wall 42 drive belts 17 folding tabs 43 Print Mark 18 side tabs 44 embossing roller 19 pull tab 45 embossing roller 20 perforation 46 recess 21 Oppression 47 survey 22 embossing 48 bedroll 23 emblem 49 drive shaft 24 web 50 gear 25 reel 51 idler pulley 26 print mark 52 Embossing roll pair 27 cigarette store 53 embossing roller 28 cigarette revolver 54 deepening 29 takeaway 55 embossing roller 30 cutter 56 Embossing roll pair 31 reel 57 embossing roller 32 web 58 embossing roller 33 idler pulley 59 cut 34 drive roller 60 embosser 35 Embossing roll pair 61 Unembossed area

Claims (15)

A method for producing blanks (10) for an inner envelope of a group of cigarettes (12), wherein the blanks (10) are separated from a continuous material web (24) provided with printing (21) at predetermined intervals, and wherein the position of the Printing (21) via a material web (24) associated print mark reader (43) is checked, and wherein the web position is changed to compensate for misalignments, characterized in that the material web (24) before separating the blanks (10) by an embossing device (60) is guided, wherein the material web (24) in the longitudinal direction of the web (24) spaced-apart embossments (22) or embossed areas is provided and wherein the web position is changed to compensate for misalignments, in particular by changing the web speed, during the material web (24) for the production of non-embossed areas (61) free by the embossing Einr direction (60) is guided. A method according to claim 1, characterized in that the material web (24) in the embossing device (60) between two embossing rollers (44, 45; 53, 55) moves through and thereby partially embossed, wherein the embossing rollers (44, 45, 53, 55 ) is preferably driven to be rotating continuously and at the same speed, and wherein the speed of the embossing rolls (44, 45, 53, 55) is coupled to the machine cycle. A method for producing blanks (59) for an inner covering of a cigarette group (12), wherein the blanks (59) are separated from a continuous material web (24) provided with printing (21) at predetermined intervals, and wherein the position of the Printing (21) via one of the web (24) associated print mark reader (43) is checked, and wherein the position of the web is changed to compensate for misalignments, characterized in that the web (24) before separating the blanks (59) by an embossing device with two embossing rollers (57, 58) is passed, wherein the web (24) is provided in the longitudinal direction thereof with a continuous embossing and wherein the web position for compensating misalignments by varying the rotational speed of the embossing rollers (57, 58) is varied. Method according to one of the preceding claims, characterized in that the material web (24) is passed through two successive embossing roller pairs (35, 52) which each emboss a region of the material web (24). Method according to one of the preceding claims, characterized in that the embossing rollers (44, 45, 53, 55) of one or each embossing roller pair (35, 52) for producing an at least partially unembossed material web (24) are at least partially disengaged, so that the Material web (24) freely between the embossing rollers (44, 45, 53, 55) of the or each embossing roller pair (35, 52) is passed. Method for producing blanks (11) for an inner covering of a group of cigarettes (12), wherein the blanks (11) are separated from a continuous material web (24) provided with printing (21) at predetermined intervals, and wherein the position of the Printing (21) via one of the web (24) associated print mark reader (43) is checked, and wherein the web position is changed to compensate for misalignments, characterized in that the web (24) before separating the blanks (11) by an embossing device with two embossing rollers (57, 58) is guided, wherein a peripheral surface of the embossing rollers (57, 58) is designed only for transport or for advancing the material web (24) wherein no embossing of the material web (24) takes place and wherein preferably conventional Embossing rollers (44, 45, 53, 55) are replaced by particular rubberized drive rollers. Apparatus for producing blanks (10) for an inner covering of a cigarette group (12), in particular within a device for producing cigarette packs, wherein the blanks (10) consist of a continuous material web (24) provided with printing (21) at predetermined intervals is, by means of a cutting device (30) are separable, and wherein a print mark reader (43) for checking the position of the printing (21) is provided, and wherein the web position to compensate for incorrect positions of the print (21) is variable, characterized in that the material web (24) before the cutting of the blanks (10) by an embossing device (60) can be guided by attaching imprints (21) or embossed areas which are spaced apart in the longitudinal direction of the material web (24), and wherein the web position a drive means (41) is variable, to compensate for misalignments, while the material web (24) frei d urch the embossing device is guided. Apparatus according to claim 7, characterized in that on the circumference of at least one embossing roller (44, 45) of a embossing roller pair (35, 52) of the embossing device (60) at least partially a recess (46) is formed, such that the material web (24) at Passing through the embossing roller pair (35) in this area (61) undergoes no embossing. Device according to one of the preceding claims, characterized in that the embossing rollers (44, 45, 53, 55) of one or each embossing roller pair (35) can be moved apart to produce an at least partially unembossed material web (24) or corresponding blanks (10, 11), wherein the embossing rollers (44, 45; 53, 55) are preferably each mounted on drive shafts (49), the rotational movement of which is coupled to one another in such a way that the embossing rollers (44, 45, 53, 55) are synchronized even in the moved-apart position are driven. Apparatus for producing blanks (59) for an inner covering of a cigarette group (12), in particular within a device for producing cigarette packs, wherein the blanks (59) consist of a continuous material web (24) provided with printing (21) at predetermined intervals is, by means of a cutting device (30) are separable, and wherein a print mark reader (43) for checking the position of the imprints (21) is provided, and wherein the web position to compensate for misalignments of the printing (21) is variable, characterized in that the material web (24) prior to separation of the blanks (59) by an embossing device with two embossing rollers (57, 58) can be passed, with attachment in the longitudinal direction of the web (24) continuous embossment (21) and wherein the web position to compensate for misalignments by changing the rotational speed of the embossing rollers (57, 58) is variable. Apparatus for producing blanks (11) for an inner envelope of a cigarette group (12), in particular within a device for producing cigarette packs, wherein the blanks (11) consist of a continuous material web (24) provided with printed material (21) at predetermined intervals is, by means of a cutting device (30) are separable, and wherein a print mark reader (43) for checking the position of the printing (21) is provided, and wherein the web position to compensate for incorrect positions of the print (21) is variable, characterized in that the material web (24) can be passed through an embossing device (60) with two embossing rollers (57, 58) before the blanks (11) are cut off, a peripheral surface of the embossing rollers (57, 58) being designed only for advancing the material web (24) so that no embossing of the material web (24) takes place. Device according to one of the preceding claims, characterized in that a control unit is provided for changing the drive speed of the drive means (41), (exclusively) during the passage of the material web (24) in the non-embossing region of the embossing rollers (44, 45). Device according to one of the preceding claims, characterized in that the embossing roller pair (35) and the drive roller (34) with the drive means (41) are designed as an assembly, wherein preferably the members of the assembly in a common housing and / or on a common one Carriers are arranged. Device according to one of the preceding claims, characterized in that two successive embossing roller pairs (35, 52) are provided, which are arranged with an axial distance in the transport direction of the material web (24) from each other, which is half the circumference of the embossing rollers (44, 45, 53 , 55) and wherein the blanks (10, 11) to be severed are partially embossable in each embossing roller pair (35, 52). Device according to one of the preceding claims, characterized in that the embossing rollers (44, 45) have a greater width than the material web (24), so that the embossing rollers (44, 45) in the region of the or each recess (46), in the material web (24) is guided freely between the embossing rollers (44, 45), engage each other.

Images