DE19507351A1 - Folding device with runner for folding sheets of substrate material - Google Patents

Abstract

The folding device has runners (10,11). One of these has a holding device (30,27) to secure the position of the material for folding (5-7) radially against it. The positive holding force over the running track and over the working width, and the position relative to the runner body and its tools (22,23,26) can be altered. This makes multiple fold passes possible for the folding unit (8). The control may be mechanical via drives, or through sensors based on suction jets. The runners described here can be fitted to existing folding machines in place of the ones originally fitted to them.

Description

The invention relates to a runner or one with it provided folding device with which flat layer materials, e.g. B. paper, pulp, nonwovens or the like, one or several times or in mutually transverse directions Can be folded to a flexible or bend flaccid and initially spread out as a settlement Cutting a folded unit, like a hygiene towel, Duster, cleaning cloth, drying cloth, a napkin or the like, to accomplish.

According to the invention, a ply web of a roller storage in a conveyor or its longitudinal direction deduction essentially continuously and after even previously, one or more longitudinal folds in the Run with one or more work runners called th type can be edited. First, be from the front end the layered web separated and in series by cross sections the current blanks cut off, which then alternate Pass over runners folded one or more times as well then in a horizontal or upright stack formation be handed over to a filing. Although conceivable, the  Processing of the blanks expediently without the sheet position penetrating punctures or front and / or side edge trimmed after longitudinal and / or transverse folding, however in mentioned run with one of the respective folding in advance smoothing, motif printing and / or full surface or Edge embossing of the layered web, after which the cross separation in two or more running concurrently on the same Benefit sheets or blanks to be machined for workers he follows.

The unit can be V-, M-, N- and / or C-shaped with longitudinal folds be folded, the fold legs like those of transverse fold can have the same or different lengths and this length as well as that of the fully folded unit can be changeable during work. The About Giving or processing on the respective runner can also be done without Folding.

The respective rotor, like a rotary or roller rotor, has receiving surfaces extending in the working direction for the sheets and holding means to determine the the end of the layer web and / or the individual sheet layer on. Instead of the mentioned puncture means or only on narrow ones Edge or fold zones z. B. clamping attacking holding means or in addition to this, holding means are also advantageously provided see which essentially engages so forcefully fen that the tensile forces exerted on the material slide allow displacement on the receiving surface without the Material tears across the tensile stress. Such holding means can z. B. Adhesive or suction, which the material also at an edge distance of at least 1 cm with a agreed holding force against the receiving surface.  

These holding means have functional properties, näm Lich a predetermined static or sliding friction between surface and material, positions of the holding zones opposite the rotor body, related to the rotor body stands between possibly several stop zones or accordingly related extents of the respective holding zone in work direction or across, a mutual relationship of area-specific holding force of at least two holding zones, absolute and above zero holding forces in the holding zones as well as holding forces depending on the distance of the respective Holding zone opposite a fixed one in the working direction or fixed reference basis.

Work the holding means, as in the case of suction perforation distributed approximately evenly in a narrow grid If there is an area under a holding zone, this is preferred to understand the multiple to a multitude of such bodies includes, with a holding zone also as a partial area of a larger holding area can be understood, about which in substantially constant holding forces act.

Runners with holding means of the type described have over their repetitive way to work different ar functions, e.g. B. they should pass the layer web below set the right tension, cause cornering forces, a slip-free hold and a hold of the material Allow slip, release the material with folding if necessary, Prevent leg displacements within folded units change, allow cross separations, change of format of the material or the folded units etc. . It turned out to be proved difficult, the work surface or the holding means design that they meet several of these needs can be.  

The invention is also based on the object of a runner or to create a folding device with which disadvantages known training or the type described avoided are and in particular an adjustment of the functional Characteristics of the runner to the respective requirements enables.

The respective runner can use arrangements or tools for be equipped for different jobs, e.g. B. with each one or more spaced in the working direction Cross-cutting knives, counter knives, folding inner formers, folding External molds, transfer means for transferring the blank from a runner or a workstation to the next most and / or with other arrangements, said Retaining means can also be missing. The runner can be approved nete gear, z. B. Double planetary gearbox, versus one or several other runners under synchronous control or during the work operation compared to this in one rectified phase shift can be moved relatively to change the format of the respective folding leg or the total effect unit or the like. Such gears or similar control devices are suitable, the respective functional property even during work to change the runner so that during the producing fold furnishing on different folded or similar ones units can be changed.

Can also be effected by a control or actuating device be that the positive holding forces are fixed in the rotor Change holding zones as a function of the work movement, e.g. B. before Cutting off the blank the front end of the sheet secure particularly strong and therefore sideways, crosswise separation up to the positional securing of the Mate riales by a next runner are lower and for  that leg of the blank again less are lifted, which is opposite to the working direction of the runner is deducted from its receiving surface. It can also effect be that during a bulge of the material, e.g. B. through a fold bar that traces this material releasing part of the holding forces is loaded, after which the holding forces immediately and before or to Implementation of this material leg immediately closing cross-section can be increased again. This can cause the material to be pulled diagonally work can simply be avoided.

As soon as the respective controlled holding zone follows material, it does it first mentioned high holding forces or the like. . So it turns out in relation to the reference base in the working direction stopping areas of different and / or constant positive holding force.

According to the invention, at least one of the functional properties changeable, whereby the change through a conversion or parts change and / or an actuating device that can, so that possibly only by an adjusting movement and a changeover is possible without any other assembly work.

The distance of the respective holding area is also advantageous ches of the reference base and / or its extension the reference base or the runner changeable, so that the Material in any sub-zone and across any surface areas transverse and / or parallel to the working direction depending on the requirements with the same or different positive holding forces can be secured.  

In the company, the runner works in the area of work zones, which are adjacent to one another in and / or across the working direction which follow, movements of at least part of the material cause transversely to the receiving surface or material processing and mostly represent workstations where recording area of the rotor in engagement with the receiving area of a Opposite stands. To the holding forces mentioned in these Ar, which is essentially fixed in relation to the reference basis working zones or over the route between neighboring areas Determining and / or changing working zones is an advantage at least one control element is provided, which in the case of egg ner position assurance by fluid pressure like an adjustable ren aperture, a spool or the like. Be formed can. The control or aperture opening can be completely laterally outside the working width and / or completely are within the working width of the runner.

Regardless of the training described can also Means can be provided to at least one of the functional Properties lying side by side in the cross direction Zones to be selected or changed differently, esp special mutually or independently to change. E.g. the holding forces can differ in such zones high, with po. in at least two holding zones sitive or zero holding forces are effected can. If the material points at least one to the working class approximately parallel fold, such as a longitudinal fold, on or the material is at least double-layered with one another material legs on the receiving surface, so it is expedient, in the area of the free leg end of the Receiving surface removed material leg a higher Hal force than in the opposite, parallel edge area of the Material to cause a mutual displacement of the  Material layers and therefore a change in the position of a fold or the like to prevent.

The changeability of the respective functional property can also be done by mutual adjustment of runners or Receiving bodies or of sections of the receiving surfaces in and / or transversely to the working direction, whereby the mentioned or possibly including arrays, arrangements or Tools, based on the rotor body, in their position or can be changed in their mutual distance. Of the Runner suitably consists of two or more against each other adjustable single bodies, which with the adjusting device or by retrofitting the machine in its storage stell or its drive connection remaining rotor ge can be adjusted against each other. This allows tools distances, distances between neighboring stopping areas and / or change the sizes or areas of these holding zones be changed to e.g. B. different blank sizes put. Both individual bodies form separate holding zones.

The receiving surfaces or holding zones can be in the working direction and / or partially or in the direction of the working width substantial be formed entirely by components, which formed separately from the respective rotor body and on the sen working side, especially replaceable non-destructively, are attached. Such a component, which is also useful separate from the closest tool is formed or attached, a cover of a or two neighboring ones as well as against each other in working direction direction of adjustable rotor segments or, if necessary, between whose mutually facing segment flanks are formed and in the width of the variable segment gap. This gap can be a radially reaching as far as the inner shaft Form pressure or vacuum chamber, which to the receiving area  che through the named component, possibly up to pressure or Suction openings, is closed. The respective component is sufficient Appropriately up to one opposite the receiving surface che transversely offset area of the rotor body or on the latter Flank. This transversely offset area can accommodate a recording recess for a tool or an outwardly projecting one Be tool yourself, in the first case the back surface of the tool an almost gap-free continuation of the associated section of the receiving surface or holding zone up bil to the working area or the working edge of the tool that can.

Grab two, z. B. on separate rotor segments in essential rigidly attached components, the envelope or can only be channel segments curved around a single axis in every mutual setting position of these rotor segments into each other, so the corresponding section of the receiving surface always created by these two cover or jacket segments det. Instead of a conceivable, tooth-like, against lateral engagement of the deck segments expediently engages the deck segment shorter in the working direction with a front jumping section partially in the other deck segment a direction away from the associated tool, so that the associated section of the receiving surface a small step having. By very thin training at least the outer Deck segment or by chamfering the overlapping cross edge, the height of this step can be very small or less than 3 or 2 mm are kept and form a smooth transition. The respective rotor segment expediently points in opposite directions set directions protruding end of one or more deck elements, which both overlap in the manner described pen, however deck segments that are on separate, on both sides of the first mentioned runner segment lying runner segments are attached. One of the segment ends mentioned is overhanging  the associated flank of its rotor segment for bridging the gap, while the other, especially against Ar direction, end with the other flank of his Completes rotor segment, so that the to this edge closing gap from one deck segment of the adjacent Rotor segment is covered.

One to all of the deck segments mentioned can contain holding zones form, e.g. B. be designed as a perforated plate, the perforation directly to the main channels of the associated Läu ferkörpers or to the fluid chamber formed by the gap connected. The main channels can be called Ta recesses in the outer circumference and / or or at least one edge of the associated rotor segment manufactured and then directly through the deck segment or a separate closure member on the open longitudinal side of the groove to be introverted. The deck segment is then only on the Longitudinal edges of axial or similar webs of the rotor segment which neighboring main channels or a main channel of separate the adjacent outer flank of the rotor segment and start directly from the hub of the rotor segment. The Main channels can be very large or compared to the rest Chen runner segment have larger volumes, which creates pressure Fluctuations in the suction openings or in the channels reduce be tied. Due to the very short, same width as ever because associated suction opening branch channels inside Half of the respective deck segment also causes friction loss The flow is reduced, the width of each branch channel les can be greater than its length. Manufacturing too the suction openings or the production of very smooth recording surfaces is significantly simplified and the grid distribution the suction openings can be changed by changing the respective deck segment can be changed. The respective runner segment can be produced as a molded or die-cast body, the  Main channels or side connection channels are formed and do not require any further processing of their inner surfaces.

According to the invention is independent of the training described also provided at least one rotor body on egg ner or both faces with one almost up to his Outer circumferential end flange or with the associated Journal over a larger area of its working width form in one piece, the end flange being a control can form the suction control or the adjacent Main channels closed at the associated end. Such a Partial ring flange can also be used between adjacent benefits widths should be provided and adjacent across the working width Separate the main channels. In addition, the ge formed runners, especially between neighboring beard ring flanges, continuous across the receiving surface Storage pockets for the runner segments of the other runner body form pers, which then lies between the two Flanges mounted without axial play and on the from the the inside of the first rotor body firmly connected to the associated control shaft or the like are.

At least two of the individual bodies are advantageous in little at least one side of the working width separately immediately on Machine frame stored or with separate discharges provided for the driving force, so that there is a very high Stability results, which, like the others described education, a significant increase in the performance of the material processing without unwanted vibrations. Further can the two individual runners over a phase shift against the drive initiation at any time during the run adjusted to each other and also driven synchronously.  

Regardless of the training described, the runner can also for the optional recording or processing of material with different number of layers or folds without any structural modification of the runner himself. E.g. the runner can cut the material forming a first cross fold or a second cross fold. Are for this in the direction of the runner, separate ares in a row beitsstation provided, so the material can either the Runners at one work station or at the other work station in which the material is already with is provided with a first fold.

In the latter case, the material can still be the first named workstation, but without takeover by the Runner, go through without any structural modification or Change in the pass band of this work station would be. This can make the folding device very much in different ways to produce different numbers be converted by longitudinal or transverse folds, whereby for the optional commissioning of the respective workstation min at least one of the control devices is suitable.

With the actuator, the optional domestic and At least one runner must be decommissioned Production of one of the mentioned folds is used. By the exception commissioning can otherwise produce a further fold avoided and by commissioning again be made possible. It is conceivable to do this in each case to decouple the rotor from the drive in terms of its ar beitsbewegung or operating position in a predetermined position to bring without disassembling the rest of the facility for yourself expand from its position or the like. . Appropriately, however, who together with the runner in the other parts of the facility Transferred out of service, such parts a single  or several other runners, their respective camp, this la can be fixed receiving frame parts or the like, which as a whole between at least two of the positions mentioned movable or serving as a fold Folding module are removable from the rest of the folding device.

These and other features go beyond the claims also from the description and the drawings, wherein the individual features individually or in groups ren in the form of sub-combinations in one embodiment the invention and in other fields advantageous and protectable versions can provide for which protection is claimed here. Execution Examples of the invention are shown in the drawings represents and are explained in more detail below. In the Drawings show:

Fig. 1 is a folding device according to the invention in simplified side view,

Fig. 2 is a development of the folding device of FIG. 1 in a view transverse to the material plane,

Fig. 3 shows a rotor according to the invention in partially axialgeschnittener view,

Fig. 4 shows a part of the rotor of Figure 3 cut. In cross-,

FIG. 5 is the rotor according to Fig. 4 associated fluid connection of control means for the retaining force in an axial view,

Fig. 6 is an actuator of the control means according to Fig. 5 in axial view,

Fig. 7 shows a further rotor in an illustration corresponding to Fig. 3,

Fig. 8 shows a cross section through the rotor according to Fig. 7 in a simplified representation,

Fig. 9 shows another embodiment of a rotor in an illustration corresponding to Fig. 3,

Fig. 10 shows a cross section through the rotor according to FIG. 9 in an end-set position,

Fig 11 position. The rotor of FIG. 10 in the other end,

Fig. 12, the cover elements of the rotor according to Fig. 10,

Figure 13 is a cast blank segments. For the preparation of runners,

Fig. 14 is a control disk in view,

Fig. 15 shows a further embodiment of an integrated Stellein of FIG. 6 and

Fig. 16, the deck segments of FIG. 10 in developed view of the receiving surface.

The on a foundation console with a storage frame 2 removable and replaceable folding device 1 is used to produce one or more longitudinal and / or transverse folds or folds, so that from a Mate rialbahn 5 over 6 cuts either less or multiply folded units 7 , 8 arise. In the direction of the material 5 to 7 immediately after a z. B. formed by a folding former longitudinal folder 3 , a driven preference 4 is provided, both sides of the material web 5 attacking the Längsgefal teten material carrier as in wesent union all other runners 10 to 14 of the folding device by a central drive, z. B. are driven by a clock shaft.

Immediately after the material 5 has left the friction drive 4 downward, it arrives in a separating device 9 and then optionally via a part or all of the runners 10 to 14 also provided, optionally via intermediate sections, in part or all of stations 15 to 20 or devices or Pass-through gaps in which the material is subjected to various treatments, after which it is placed in the last station 17 at the exit of the folding device 1, or is stacked standing. The material can optionally be provided with a fold or with at least one further fold only in a transfer or folding device 16 , for which purpose the material from the device 16 successively in three transfer or folding devices 18 , 19 , 20 and finally on the same end path arrives at the tray 17 as previously described.

The devices 18 , 20 can thus be taken out of operation and are in each case also formed by the functional components forming the devices 15 , 16 , while the device 19 is formed solely by the components 11 , 14 . The respective device 15 to 20 processes or be treats the material during the continuous passage through a gap or the like, which is in each case limited by two working runners 10 to 14 .

The layer web 5 is deducted from a storage roll, not shown, via length compensation dancers and a smoothing unit from a subsequent take-off conveyor, the speed of which can be regulated independently of the drive of the devices 15 to 20 . The web 5 then passes through a web edge control, at least one to about eight printing units, a heated drying section, at least one embossing unit and possibly a longitudinal separating device, in which it can be divided into two or more adjacent widths without trimming. The respective web can then get into the associated longitudinal folder 3 .

The material 5 can be one or more layers in the storage state and z. B. 17 to 21 g / m² and weight per layer. Appropriately, the web 5 has a substantially the working width of each runner determining width of about 500, over 800 or over 1000 mm, being made of a pressed fibrous substrate, for. B. consists of cellulose, plastic, tissue or the like. Through the longitudinal folder 3 , the respective web is folded along a fold lying in its longitudinal direction with fold legs of the same or different widths and then in this folded state from the preference 4 in a continuous passage through the above-mentioned treatments to the respective devices in operation before 15 to 20 fed.

The respective device 15 , 16 , 18 , 19 , 20 is formed by the interaction of two circumferences or receiving surfaces from running in the narrowest gap area or tangential point, of which the runners 10 , 11 , 14 each have at least two or three devices 15 , 16 , 18 and 18 , 19 and 18 , 20 are zugehö rig. At least one of these runners, e.g. B. the rotor 12 , can also four along its receiving surface at a distance ver shared devices, for. B. instead of a delivery point have two distributed over its circumference transfer points on the runner, the units 8 optionally deliver to two separate stacking len. After leaving each gap zone, the material 5 to 8 is taken along by the receiving runner as a whole via an arc path of approximately 90 °, 180 ° to approximately 270 ° and thereby taken over in an oppositely curved arc path or direction of movement.

With the separating device 9 , subsequent cuts 6 are separated from the material web 5 by cross sections when these are placed almost completely around the outer circumference of the associated rotor 10 and are secured relative to this. The respective blank 6 can be passed to the rotor 12 in the region of the device 16 after a Bo gene path between 90 ° and 180 °, it first being grasped by the rotor 12 between its ends and then its trailing of the legs essentially by rolling or released without sliding to the runner 12 and at the same time his leg thinning in front is pulled away from the runner 10 against the running direction thereof and placed on the trailing leg 1 . As a result, a once-folded unit with the same or different lengths of transverse folds is then formed on the rotor 12 , which is fed from the device gap 16 via an arc angle between 90 ° and 180 ° and without processing through the device 20 through the tray 17 .

Optionally, the blank 6 can also be taken from the station 16 over a larger arc angle between 180 ° and 270 ° to the station 18 and there folded in the manner described with the rotor 14 and further over one of the arc angles mentioned or approximately 270 ° to Station 19 can be moved. In this, the unit 7 , which has been pre-folded one or more times in the transverse direction, is transferred to the rotor 11 and, as in the case of station 15, a pre-fold similar to a linear bulge is created by an inner former 23 or 26 . From the station 19 , the unit 7 is fed to the station 20 over an arc angle of approximately 90 ° and provided with a further transverse folding in the manner described, with delivery to the rotor 12 , and from the rotor 12 over a smaller arc angle of approximately 90 ° to the same location From location 17 supplied.

However, the unit 8 then has at least one further transverse fold compared to the previously mentioned method of operation, at least two or an even number of further rotors being provided for producing each further fold, via which the material from the rotor 10 is fed to the rotor 12 on a bypass route becomes. The working direction of the runners 10 , 12 , 13 is the same in both working methods, while in the case of directly interacting runners it is opposite at approximately the same speed.

At least one to all of the runners 10 to 14 perform a circumferential or rotary movement, so that they can be designed as cylinders or rollers which are mounted on mutually parallel horizontal rotation axes on both sides of the working width at the position 2 . Each runner can have one to several tools 21 to 30 distributed over the circumference in order to carry out the desired work in the associated stations. Each of the runners 10 , 11 , 12 , 14 is a cutting, transport, takeover and transfer runner trained det, the runners 12 , 14 on the one hand and 10 , 11 on the other hand have essentially the same functions. The rotor 13 is designed as a cutting rotor, the rotor 10 additionally as a counter and prefolding rotor and the rotor 12 as a folding and dispensing rotor.

The pairs of runners 10 , 12 or 11 , 14 on the one hand and 10 , 14 or 11 , 12 on the other hand each lie in axial planes which are mutually diverging approximately parallel or downward at an acute angle or are inclined opposite at approximately 45 °, the runners 11 , 14 are essentially above the respective runner gene 12 , 10 . The respective rotor can carry out a single or two or more similar operations on a corresponding number of units 6 to 8 , depending on the size of its effective scope, for each full revolution. The runners 10 , 11 , 13 , 14 have the same effective circumferences and in each case two tool arrangements 21 to 28 which are offset from one another by approximately 180 ° and have the same effect. The rotor 12 has a circumference that is half larger, with three tool arrangements 28 , 29 offset by approximately 120 °.

The runner 13 lies on the side of the runner 10 which is essentially turned away from the runners 11 , 12 , 14 and does not take over the material 5 on its circumference. On the circumference, he carries two cutting knives 21 , which in the continuous pass one after the other with counter-knives 22 on the circumference of the rotor 10 in the area of the gap 9 cut the blanks 6 from the web 5 with adjustable length. The peripheral surface of the rotor 10 , 11 , 12 , 14 forms the receiving surface for the material 5 to 8 , which bears on this over a large area.

Each of these runners has holding means 25 , 27 , 29 , 30 for securing the material, which can act transversely to the receiving surface over a larger surface area and / or approximately parallel to the receiving surface only in a front edge area in the working direction, so that the trailing one Part of the material is pulled without immediate parallel securing. The runner 10 has substantially over the entire circumference and / or the working width securing or holding means 30 with which the front end of the web 5 and the blank 6 from the gap 9 and therefore be before separation over the largest Part of the material area is determined. This results in good lateral guidance from the gap 9 with longitudinal tension of the web 5 . In relation to the knives 22 offset in the circumferential direction, two folding inner formers 23 , such as folding knives, folding strips or the like, are provided on the rotor 10 . The respective blank 6 is placed before separation from the web 5 when passing through the gap 9 with its side facing the rotor 10 over a folding blade 23 and thereby producing a bead-like projecting fold on the other side, which optionally in the area of the gap 16 or Gap 18 is used over a partial circumference of the runner 12 or 14 to complete the folding. Correspondingly, the runners 11 , 14 for pre-folding and the runners 11 , 12 for finishing folding work together in the area of the gaps 19 , 20 .

The tools 24 , 25 and 28 , 29 of the runners 12 , 14 can be essentially the same in terms of their functions and / or configurations. The tools 24 , 28 form fold outer formers or pre-fold and finish fold receptacles, while the holding means 25 , 29 secure the material at the inwardly angled angle in the receptacle 24 , 28 engaging fold. They are in relation to the associated rotor 12 , 14 controlled movable gripper, namely so-called folding jaws, which hold the material by clamping only frictionally, but so securely that it cannot perform any relative movement in the working direction and sideways relative to the rotor until delivery a relief from the clamping force is required for this.

The runners 10 , 12 , 13 and 11 , 14 and their bearings have the same distances from each other in each operating position. The widths of the column 18 , 20 can, for. B. by common radial lifting of the runners 11 , 14 with a ge special storage rack, can be enlarged to provide the folding only in the area of the gap 16 . For this purpose, the runners 11 , 14 can also be stopped by interrupting the drive connection. In order to prevent damage to the above work 23 , 26 when walking past the rotor 12 to 14 , this has circumferential depressions or gap-shaped free spaces 31 in which the tool 23 , 26 z. B. can intervene to form the pre-fold, so that the respective gap 31 can also act in the manner of a tool or fold-Außenfor mers.

Referring to FIG. 2, the rotor will be 10 to 14 gesonder four te, parallel drive levels driven 32 to 35, in which each intermeshing gears or rotor working are 36 to 45. According to the course of the material 5 to 8 , the driving force is transmitted from one to the next rotor 13 , 10 , 14 , 11 , 12 or 13 , 10 , 12 , so that all the runners are driven synchronously with approximately the same circumferential speed. A arranged on the shaft of the rotor 13 rotor 36 drives a first rotor body 46 of the rotor 10 via a rotor 37 directly and via intermediate rotor 38 , 39 a phase adjusting device 50 , such as a double planetary gear, a second, with the rotor 40 fixedly connected rotor part 47 . As a result, the tools 22 , 23 can be adjusted relative to one another about the axis of the rotor 10 , in which the rotor 37 , 40 are located, for the relative change in the leg length of the units 6 , 7 during the run. The total length of the blank 6 can be changed by changing the gear ratio between the associated runners or by replacing gear wheels as change gears. A rotor 41 fixedly connected to the rotor 40 drives the rotor 14 via a rotor 42 arranged on its shaft.

Accordingly, the rotor 42 drives a rotor 43 and this with a rotor 44 via a gear 50 corresponding actuator 48 a rotor 45 , which is fixed on the shaft of the rotor 12 . With the Stellvor direction 48 , as described, the relative leg length of the unit 7 , 8 can be changed in the subsequent folding. The rotor 10 , 41 can drive the rotor 14 or the rotor 12 via a changeover clutch 49 depending on the operating mode. For this purpose, the runners 42 , 45 are provided in separate, immediately adjacent drive planes 32 , 33 , so that the runners 41 are optionally in and out of engagement with the runners 42 , 45 and thereby also the runners 11 , 14 or the by means of axial displacement Actuating device 48 can be stopped. A corresponding de, optionally radially disengageable clutch can also be provided between the runners 44 , 45 .

The frame 2 is essentially formed by two frame cheeks 51 lying on either side of the rotor 10 to 14 and receiving the rotor bearing, on the mutually facing outer sides of which two of the drive planes 32 , 35 are located. The runners 44 , 45 are located in the first, the runners 42 , 43 directly adjacent in the second, the runners 36 , 38 on the other side of the frame in the third and the runners 39 , 40 directly adjacent in the fourth drive plane.

In the shelf 17 designed as a table display, the units 7 and 8 are stacked in a row in a row in a standing position on their last-made folded edge, without an adjustment of the shelf 17 being necessary for the two operating modes. A transfer member 52 , like a racket which projects upwards, guides the units 7 , 8 in the same way in both operating modes from the circumference of the rotor 12 to the rear end of the stack row. The member 52 may be several, 12 have engaging freely ausragende and pivotally driven racket arms in circumferential grooves of the mover, which stand out at their radially opposite the rotor 12 outwardly directed movement of the respective unit 7, 8 in dissolved tool 29 from the periphery of the rotor 12 and place on shelf 17 . The rotor can also have corresponding circumferential grooves. The runner 12 can also cooperate with two rotatable runners, which form transfer gaps with it on its underside facing away from the runners 10 , 11 , 14 and have holding means of the type described. These correspondingly driven runners, which are at the same height, then alternately transfer the units 7 , 8 with the help of approximately lying transfer members to the stack of heights below, in a lying arrangement. These stacks can be removed independently of one another.

The rotor bodies 46 , 47 of the rotor arrangement 10 according to FIGS. 1 to 6 are mounted on each frame side with two bearings 53 , 54 and 55 , 59 , essentially independently of one another, directly opposite the cheeks 51 . The Läuferkör per 46 on both sides is mounted by two at its ends only to the outside subsequent outer shafts 56 directly to the cheeks 51 and as the rotor body 47 and the outer shafts 56 passed through by an inner shaft 57, which at the input plane 32, 33 associated cheek 51 independently of the bearing 53 of the outer shaft 56 with a bearing 54 is mounted directly radially and axially. Correspondingly, the bearing could also be provided on the other side or cheek 51 , but here the shaft 57 with the bearing 59 is mounted directly on the shaft 56 in the region of the drive plane 34 or 35 .

The rotor body 46 is axially and radially rigidly flanged or formed in one piece on the end face with one or both shafts 56 and rotatable relative to the shaft 57 , while the rotor body 47 is sealed on the end face and is radially adjustable, it is in engagement with the shafts 56 and is directly rotationally fixed or centered with the shaft 57 is the. The rotor body 46 thus forms with two diametrically opposed, separate assemblies form the axial segment sections, the only non-rotatable connection between the shafts 56 , with only one shaft 56 being driven directly via the rotor 37 .

The correspondingly segmented rotor body 47 is connected in a rotationally fixed manner to a middle, enlarged section of the shaft 57 which lies between the shafts 56 and carries the runners 40 , 41 at both ends. At their ends facing the rotor bodies 46 , 47 , the shafts 56 each carry an integrally formed, ring-shaped, ben-shaped control body 61 , 62 , between which the rotor segments 46 are interchangeably clamped and which form part of a control device 60 for influencing the holding force of the holding means 30 in Dependence on the rotational position, an arbitrary setting and the axial zone of the Haltemit tel 30 are.

On the outer end face of each control body 61 , 62 , a control unit 63 , 64 , which is fixed to the frame and / or can be set in the working direction, slidably engages with an end face, which controls the associated shaft 56 or 57 between the control body 61 , 62 and the associated cheek 51 Circumference surrounds. The control units 63 , 64 are adjustable independently of one another and are mounted independently of the bearings 54 to 55 on the frame 2 . Each of the two, like the control bodies 61 , 62, structurally or functionally the same or differently constructed or mirror-inverted opposite one another, the control units 63 , 64 has in its end face facing the control body 61 , 62 an annular recess extending around the axis of rotation in the working direction and open to the end face on, which can be sealed with radially inside and / or outside sliding seals against the end face of the control body 61 , 62 .

The ring opening is shown in FIG. 6 in a plurality of spaced substantially pressure-tightly separate and consecutive in the working direction and therefore ring-segment-shaped chambers divided 65 to 67, of which two or more separate fluid or control terminals 68, connected to 69 or one or more can not be provided with a control connection. The arc angle over which the respective chamber 66 , 67 extends can be changeable for at least one or two chambers 65 to 67 even during operation by an actuating body 70 . The chambers 65 to 67 are each closed by a single separating wall 71 to 73 lying between them, used separately and sliding on the associated control body 61 , 62 , which is considerably smaller than the chambers and is exchangeable or displaceable in the circumferential direction as a radial bulkhead. May be the partition wall 72 situated between the chambers 66, 67 is part of a control body 70 which 73 manually adjusted with a freely accessible lying on the outer circumference of the actuator 63 the actuator 74 between the partition walls 71, via a control drive continuously and fixed in any position. The chamber 66 , 67 therefore always have the same extension in the working direction, since an enlargement of the chamber 66 leads to a reduction in the size of the chamber 67 , which can also be rendered completely ineffective when the partition walls 72 , 73 are in contact with one another.

About the connections 68 , 69 can prevail in the chamber 65 , 66 under different pressure conditions. There is also only one connection for both chambers 65 , 66 conceivable, then between these and with the interposition of a Steuereinrich device, such as an adjustable throttle, an intermediate connection would have to be provided.

As Fig. 5 shows, the respective control body 61, distributed with uniformly in the working direction about its axis and ungleichmä SSIG 62 equal and unequal connecting channels 75 is provided which at its outer end side outlet and connection openings 76 for the chambers 65 to 67 and its inner end face forms inlet or connection openings 77 for the ends of main channels 78 , 79 of the rotor bodies 46 , 47 . Openings 77 can be offset radially outward relative to associated openings 76 , and the openings 76 , 77 can be circular or elongated in the radial direction.

Each runner segment 46 , 47 , which can be enlarged or reduced in the working direction by adding or removing at least one additional segment 58 that is rigidly connected to it, has channels 78 , 79 as main lines, which are approximately in the width direction of the runner 10 and approximately axially parallel to this are arranged at two or more different distances from the circumferential surface or in corresponding rings around the axis of rotation. In each case two or more main channels 78 , 79 each extend only over an approximately equal part of the working width, with main channels 78 , 79 aligned with one another being formed by blind bores extending closely adjacent to one another or being pressure-tightly separated from one another by a separating body, which can be changed the length of the respective channel 78 , 79 is adjustable. The circumferential surface of each runner segment 46 , 47 , 58 forms a receiving surface 82 , 83 for the material 5 , 6 and in the region of this receiving surface a holding zone 80 , 81 for pressing the material regardless of the weight force. The respective holding zone 80 , 81 is formed by a plurality in a finest grid the suction surface 82 , 83 penetrating suction openings 85 which z. B. in at least two or three in the circumferential direction consecutive axial rows against each other evenly axially offset openings 85 can contain. This can be achieved by the fact that each channel 78 , 79 has several branch channels 84 which are angularly offset about its central axis and which penetrate the receiving surfaces 82 , 83 with their outer ends and thereby each form a suction opening 85 . The Bogenwin angle, over which the suction openings 85 of the respective channel 78 , 79 extend about the axis of rotation, is substantially smaller than that of the chambers 65 to 67 and is only about at least or at most 10 °, so that a very fine control of each location-specific holding forces or the expansion of the holding zone is possible.

Suction openings or holding zones can also be provided in the area of the tools, in particular the knives 22 , approximately up to their cutting edges, so that their breast surface, which belongs to the circumference of the rotor, can be penetrated by suction openings. Furthermore, at least one approximately in an axial plane of Läu fers 10 flank surface 86 of the respective Löfferseg element 46 , 47 , 58 can be penetrated by a channel 78 , 79 , 84 which is limited only over a partial circumference, the remaining partial circumference of which is then through the corresponding partial channel Additional segment 58 is to be closed, so that suction openings 85 not only extend as far as this flank, but are provided in the separating gap between such rotor segments. In the working direction on both sides of the tools 23 , no holding zones are provided here in a small circumferential area, since the tools 23 serve to lift off the material 5 , 6 from the receiving surface 82 , 83 .

The tools 22 , 23 are each in the working direction on or close to the front end of the associated Läu fersegmentes 46 , 47 , which can be free of suction openings in the working direction in front of the tool 22 , 23 . However, suction openings 85 extend to the rear end of the segment body 46 , 47 and up to both flank ends of the segment 58 . The end of each channel 78 , 79 lying in the associated end face of the segment body 46 , 47 forms a connection opening 87 for the associated opening 77 , the openings 87 of the rotor body 46 being congruent with the openings 77 , while the openings 87 of the rotor body 47, depending on the setting, can be connected to one or two adjacent openings 77 by covering them. For each opening 87 and each opening rim of the rotor body 46, a separate opening 77 is provided, while the Publ voltages 77 of the rotor body 47 are provided in common for both orifice rings 87, so that in each case two radially ver sat openings 87 with the same port 77 and / or can be connected to separate openings 77 . Since the suction openings associated with the channels 78 , 79 each cover only a part of the working width of the receiving surfaces 82 , 83 and a separate control unit 63 , 64 is provided for each of these parts, separate, directly adjoining and / or or spaced-apart holding zones in which differently high holding forces can be brought about.

Through interchangeable insertion of at least one closing body in at least one connecting channel or an opening 77 , individual channels 78 , 79 or the associated suction openings 85 can be throttled or completely closed, so that depending on the associated part of the working width, axial sections of the holding zones 80 , 81 can be influenced accordingly independently of one another.

In Figs. 4 and 6, the stations 15, 16, 18 are indicated with arrows.

A few angular degrees before the receiving surface 82 , 83 reaches the sta tion 15 and the layer web 5 , the associated holding zone 80 , 81 is connected to the chamber 65 and thereby causes its maximum holding force via the connection 68 . This holding force is maintained until the holding zone has reached the station 16 , in which the holding force is canceled by the separating body 71 or the area free of holding points 85 in the tool 23 , so that the rotor 12 cuts 6 , z. B. with the holding means 29 , take over on the pre-fold or not, regardless of whether the blank 6 has already been separated from the web 5 in the station 15 or not. During this separation, the material 5 , 6 is secured on both sides immediately adjacent to the separation point by the holding zones 80 , 81 . The trailing leg of the blank 6 is secured during the transfer in the station 16 until it is reached with the holding force mentioned, while the leading leg is secured with a correspondingly lower holding force because the securing zones 80 , 81 now securing it with communicate the chamber 66 so that in the working direction after the station 6 there is an abrupt drop in the holding force to a lower level. The leading material leg can thus be pulled against the working direction of the runner 10 from the receiving surface 83 and placed on the trailing leg, which is passed essentially rolling across from the receiving surface 82 to the corresponding peripheral receiving surface of the runner 12 .

Depending on the setting of the actuating body 70 , the holding force is suddenly reduced or abolished before, in or after the station 18 , so that the blank 6 can then be transferred to the receiving surface of the rotor 14 in a corresponding manner. The separating body 72 then acts like the separating body 71 . By adjusting this separating body 72 , the position can be selected in relation to the station 18 up to which point the holding forces act or from when they are at least substantially reduced for the material leg running ahead or are canceled in the region of the chamber 67 . The chamber 66 with the effects mentioned can also connect directly to the chamber 65 in the working direction via the then two-part separating body 72 , 73 , so that positive holding forces are given approximately over the entire rotational path. Said holding areas 65 to 67 can be set independently of one another over the working width by the control units 63 , 64 .

In addition, the surface dimensions of the holding zones in Ar beitsrichtung and in the direction of the working width with the control units 63 , 64 as well as by removing or adding differently sized additional segments 58 to the side of the segment body pointing from the tool 22 or 23 against the working direction 46 , 47 can be changed. This also makes it possible to change the positions of the holding zones 80 , 81 relative to the rotor body 46 , 47 .

In FIGS. 1 to 16 but are for corresponding parts the same reference numerals in FIGS. 7 and 8 with the index "a" and in Figs. 9 to 16 with the index "b", is used, so all Parts of the description apply mutatis mutandis to all embodiments.

When runner 10 each extend two simultaneously acting on the same unit 6 on both sides of the tool 23 , active holding zones 80 , 81 about the axis of rotation over an arc angle of more than 45 to 160 °, so that each end of a unit 6 against the receiving surface 82nd , 83 is tightened, or positive holding forces which are substantially uniformly distributed between these ends are effective. The arc angle of the holding zone 80 can be approximately the same size as that of the holding zone 81 , and between cooperating holding zones 80 , 81 , an extending on both sides of the tool 23 , from positive holding forces essentially free zone can be provided, the arc angle smaller than that of individual holding zone 80 , 81 . The arc angle of the respective holding zone 80 a of the rotor 11 is greater than 40 or 60 °, wherein in the working direction one behind the other at least four to eight or twelve transverse rows of suction openings 85 a can be provided, which have essentially the same distances from each other. The arc angle of the free of positive holding forces receiving surface 83 a is at least 90 to 110 ° larger, this receiving surfaces 83 a, based on the working direction, extends several times further behind the tool 26 than before, namely at least four times further.

Essentially within the working width of the receiving surfaces 82 a, 83 a lies within the rotor body 46 a or in the axis of rotation, a sleeve-shaped actuator 70 a of the control device 60 a, which has a longitudinal slot as connecting channel 75 a for each part of the working width. This longitudinal slot forms the connection opening 76 a on the inner circumference and the connection opening 77 a on the outer circumference, to which the radially inner ends of the branch channels 84 a immediately adjoin. The slot width of the axial slot 75 a is chosen so small, however, that a holding zone of less than 15 or 10 ° or approximately 5 ° Bogenwin angle is effective on the receiving surface 82 a, but in this suction openings 85 a are also provided in the working direction, e.g. B. four neigh disclosed cross rows are assigned. All other branch channels 84 a are closed by the circumference of the actuating body 70 a.

The connection opening 77 a can be adjusted with the actuating body 70 a over the entire area of the associated branch channels 84 a, so that the positive effective holding zone in and against the working direction relative to the rotor body 46 a can be adjusted as desired, depending on how large the extension of the leg of the unit 7 leading the tool 26 . This adjustment is possible with the rotor 43 during the work operation, wherein after the adjustment of the actuating body 70 a rotates synchronously with the rotor body 46 a. An out of the Läu ferkkörper 46 a projecting end of the actuator 70 a forms a fixed to the rotor 43 control sleeve 61 a.

At the same time, this end forms with the other end an inner shaft 57 a, which is mounted with its outer circumference on the bearings 54 a, 59 a on the inner circumference of the outer shaft 56 a of the rotor body 46 a. This outer shaft 56 a is in turn mounted approximately in the plane of the bearings 54 a, 59 a with the bearings 53 a, 55 a on the cheeks 51 and rotatably connected to the rotor 44 . The adjusting device 48 is used for mutual adjustment of the two runners 43 , 44 .

Within the rotor body 46 a and the actuator 70 a lies in the axis of rotation a tubular actuating unit 63 a, the jacket of which is provided with through openings 65 a, 66 a, which extend over an arc angle which corresponds approximately to that between the stations 19 , 20 or opposite is bigger. In cooperation with the connecting channels 75 a, this results in a rotary slide valve control such that when the unit 7 arrives at the station 19, the foremost, folded end of this unit 7 is grasped by the associated area of the holding zone 80 a and sucked in via the small arc angle mentioned , Carried in this state in the working direction and then in the area of the station 20 by closing the line connections between the connecting channel 75 a and the control opening 65 a is released from the holding forces. This line connection is only opened again when station 19 is reached.

The two ends of the actuating unit 63 a serve as connections 68 a, 69 a for a suction source, wherein the connecting channel 75 a, like the control openings 65 a, 66 a, can each be divided by a partition 72 a or 71 a or form separate sections , so that wide different high area-specific holding forces can be effected in the associated parts of the work. The actuating unit 63 a is adjustable with respect to the position of the control opening 65 a, 66 a about the axis of rotation relative to the frame 2, even during work, as an aperture. The extension of its aperture 65 a in the working direction, for. B. by changing the actuator 63 a, can be changed in a simple manner.

The same applies to the actuating opening 75 a or the actuating body 70 a. The holding zone 80 a and the folding strips 26 having receiving surfaces 82 a, 83 a need not be adjustable against each other, so that these receiving surfaces may be integrally formed.

Referring to FIGS. 9 to 11, the control body 61 b, 62 b in one piece together with the outer shafts 56 b and with the whole shell of the rotor body 46 b is formed which is wide in the center and between the individual widths of the overall working an annular disk-shaped Center flange 88 forms. The diametrically opposed rotor segments 89 of the rotor body 46 b form between their mutually facing flanks and between a respective end flange 61 b and 62 b and the central flange 88 each have a continuous pocket up to the shaft 57 b for a rotor segment 90 of the rotor body 47 b, so that at least one separate rotor segment 90 is provided for each individual working width. At its ends, the runner segment 90 has end walls 91 which, with their outer surfaces facing away from one another, slide in a sealed manner on the mutually facing inner surfaces of the associated flanges 61 b, 88 and between them delimit a single main channel 78 b and 79 b, which is approximately different from the one Back of the receptacle for the tool 23 b extends to the rear flank of the rotor segment 90 .

The end wall 91 sliding on the control disk 61 b or 62 b is penetrated by the connection opening 87 b and connected to at least one of the connecting channels 75 b. The main channels 78 b, 79 b of the rotor segments 89 , 90 are over their entire length or up to the associated flanges 61 b, 88 , 62 b or up to the end walls 91 and therefore over the associated working width on the full inside width The outer circumference of the rotor segment 89 or 90 is open, since they are designed in the manner of pocket-like or groove-shaped depressions, which decrease in width due to the groove. Behind the receptacle for the tool 22 b, the rotor segment 89 forms a plurality of such adjacent pockets 78 b, 79 b, each of which is separated from one another by a longitudinal web lying in an axial plane and thinner than the pocket width. Each of these main channels 78 b, 79 b is line-connected in the region of the groove base with at least one narrower connecting channel 75 b of the associated control disk. Another main channel is located radially within the tool 22 b, with its corresponding groove opening in the associated flank of the rotor segment 89 and is closed with a plate-shaped, recessed in the flank closure member 92 at the groove opening ver. Branch channels 84 b emanate from this main channel, which pass through the tool 22 b and form suction openings on its outer surface associated with the receiving surface.

Several, in particular all four, required for a runner 10 b, runner segments 90 can be produced in the manner of a cast cluster from a single blank 93 according to FIG. 13, in which all segments 90 are shared between two end planes with mutual distances and evenly distributed around the blank axis lie. The end walls 91 go in the blank 93 initially over the distances through, are per but separated out as a segment-shaped partition members 94 adjacent between mutually facing edges of segments 90, where isolated by the rotor segments 90 and then in the rotor body 46 b mounted respectively against the shaft 57 b can be exchangeably screwed. As a result, the end faces facing away from one another, the circumferential surfaces as well as the connecting surfaces for the shaft 57 b and the tool holders of all segments 90 can be machined together and very precisely. The openings 87 b are only molded without machining.

The control body 61 b, 62 b are adjacent to the groove bottom of the chambers 78 b, 79 b around the rotor axis with annular Ausneh measures, which extend to the inner end face of the associated body 61 b, 62 b and only through the flanks between the Pockets 78 b, 79 b are interrupted in the plane of the associated inner end face. In these ring openings, disk-shaped control inserts 95 according to FIG. 14 are fixedly inserted, which clamp against the end edges of the flank webs and form the connecting channels 75 b. In each case two or more control inserts 95 can form a jointly braced package with congruent connecting channels 75 b and therefore be so thin that their connecting channels 75 b can be produced very precisely by machining with a laser beam. The outermost insert 95 thus forms the connection 76 b and the innermost insert 95 the connection 77 b.

In this case, the receiving surfaces 82 b, 83 b or their holding zones 80 b, 81 b are formed by shell or cover bodies 96 to 99 , which for the sake of clarity also show the circumference of the rotor bodies 46 b in FIGS . 10 and 11, 47 b are shown somewhat lifted radially outwards and essentially form the entire working surface between tools 22 b, 23 b which follow one another in the working direction. For axially adjacent individual working widths, separate deck segments 96 to 99 are provided, which can be formed in pairs in the same way. This also applies to the tools 22 b, 23 b. On both sides of the tool 22 b, two deck segments 96 , 97 are fastened to each runner segment 89 . The deck segment 96 closes flush and immediately adjacent to the Zweigka channels 84 b to the back of the tool 22 b and covers all associated main channels 78 b, 79 b of the associated rotor segment 89 , over the rear flank of which it can still protrude slightly.

The deck segment 96 is in the axial direction along the tool Ges 22 b and on both side edges to the rear end of the segment 89 with screws interchangeably attached to the circumference of this segment 89 , namely clamped directly against the circumferential surfaces of the flanges 61 b, 62 b, 88 . The same also applies to the cover segment 97 , which immediately adjoins the receiving recess in front of the tool 22 b and projects with most of its circumferential extent beyond the front flank of the segment 89 . Correspondingly, the cover segments 98 , 99 also adjoin the receiving recess for the tool 23 b, or the tool itself, but these are only fixed or braced with respect to the associated rotor segment 90 and thus radially adjust to the thickness of the cover segments 96 , 97 internally offset envelope surface lie that their outer surfaces on the inner surfaces of the cover segments 96 , 97 and their inner surfaces laterally within the segments 96 , 97 on the peripheral surfaces of the flanges 61 b, 62 b, 88 can lie or slide flat. The front deck segment 98 , like the deck segment 97, projects over part of the circumferential extent of the adjacent rotor segment 89 over the front flank of the associated segment 90 , while the rear deck segment 99 projects only slightly beyond the rear flank surface. The flanges 61 b, 62 b, 88 do not protrude beyond the receiving surfaces.

Depending on the mutual setting, a segment gap 58 b is formed between adjacent rotor segments 89 , 90 or between their mutually facing flanks. The front of the tool 22 b and behind the tool 23 b gap 58 b is completely covered by the cover segment 97 and slightly covered by the cover segment 99 in each setting. The gap 58 b lying in front of the tool 23 b and behind the tool 22 b is just completely covered by the cover segment 98 in each setting position and slightly covered by the cover segment 96 . The engaging deck segments 98 , 99 are slightly narrower than the deck segments 96 , 97 so that they can slide along between their laterally outer fastening screws. The deck segment 98 is only fastened to the rotor segment 90 at its rear end and projects freely from this fastening, but is nevertheless guided through the deck segment 96 .

By covering with the segments 96 to 99 , said gaps form essentially closed chambers 58 b, which are connected to the control device 60 b in the manner described, so that holding zones can also be formed in their area. From the respective chamber 58 b nen branch channels 84 b can also start within the adjacent rotor segment, which immediately before the associated tool, e.g. B. the tool 23 b, open and continue through the associated deck segment 98 , so that suction openings 85 b are also formed in this area. Due to the design of the control insert 95 , the chambers 58 b or the branch channels 84 b mentioned are always connected to the control device 60 b regardless of their width setting.

So that the respective chamber 58 b is sealed against the outer circumference of the shaft 57 b despite the relatively wide inner circumference of the rotor segments 89 , seals 100 , z. B. La byrinth seals provided. Thus, at the two Flan 89 ken of the rotor segment radially or be fastened approximately in axial planes standing sheets or the like., The radially inner edges run immediately adjacent to the outer periphery of the shaft 57 b. A corresponding transverse seal can also be provided between the adjacent rotor segments 90 in the region of the flange 88, so that axially adjacent chambers 58 can be pressure controlled changed geson b. The separating or sealing plates can simultaneously form stops for mutual impact on adjacent rotor segments 89 , 90 , so that the chambers 58 b are never completely closed, but at the smallest width z. B. form a gap of about 1 mm gap thickness. So can be formed almost continuously over the entire circumference of the rotor 10 b holding zones, regardless of the mutual adjustment of the rotor body 46 b, 47 b.

Provided for in the hole grid in the deck segments 96 to 99 flow holes 85 b are so designed or arranged that in each overlapping position between the deck segments 96, 98 and 97, 99 covered openings 85 b of the cover segment 98, 99, with partial or complete coverage Openings 85 b of the covering deck segment 96 and 97 lie and thus form Ver connecting channels for the latter. For this purpose, the openings 85 b of the deck segments 98 , 99 are elongated or elongated in the direction parallel to the working direction and are distributed approximately over the same width of the holding zone as the openings of the deck segments 96 , 97 . The deck segment 98 has directly adjacent to the associated tool 23 b through openings which are arranged in register with the branch channels 84 b lying in front of this tool 23 b and are therefore controlled via this and the associated chamber 58 b.

The deck segment 96 has suction openings in longitudinal rows immediately behind the tool 22 b, which run obliquely on both sides of the longitudinal center plane of the associated individual working width in such a way that they move outward from this longitudinal center plane. This opening arrangement extends only over an area in which the cover element 96 according to FIG. 10 cannot be overlapped by the cover element 98 , so that the opening arrangement serving to spread the material is always effective. Through this opening arrangement, the material from the center of its width on both sides to the outside is subjected to a stretching force and thus independent of the mutual adjustment of the rotor body 46 b, 47 b prevented from ten tenungen Fal. The mutual adjustment between the rotor bodies 46 b, 47 b about the rotor axis can be more than 30 ° or 40 ° and also 45 °. Due to the overlapping holes in the cover segments 96 , 98 on the one hand and the cover segments 97 , 99 on the other hand, the passage cross-section of the suction perforation in the overlap area can be changed in an essentially stepless manner, similar to a slide valve.

In Fig. 9 only one of the actuators 63 b of the Steuerervor direction 60 b is shown and the other is to be arranged in mirror symmetry on the other end face of the Läufererkör pers 46 b according to FIG. 3. In the adjusting unit 63 according to b Fig. 15, the b three bulkheads or partition walls 71, 72 b, 73 b in one piece with the control housing or the Begrenzun gene of the annular groove is formed and in the chambers 65 b, 67 b, respectively a movable Adjusting body 70 b arranged as a further radial bulkhead. The port 68 b opens directly on both sides of the partition 73 b in both chambers 65 b, 67 b, but each in the chamber 65 b with a larger passage cross section. However, the two outlet passage cross sections in the chambers 65 b, 67 b can be changed independently of one another, as can their extension in the working or circumferential direction and thus the corresponding extensions of the effective holding zones 81 b, 80 b on both sides of the effective range of the station 15 b. The chamber 67 b can be almost closed for this area or opened up to the partition 72 b. Similarly, the chamber 65 can in this area b in sentlichen we are fully closed or opened approximately to the partition wall b 71st Are the two actuators 70 b adjustable with a common actuator, so a reduction or enlargement of the chamber 65 b accordingly leads to an enlargement or reduction of the chamber 67 b.

In cooperation with the control insert 95 or its Ver connecting channels 75 b, the arrangement is expedient so see that when the web 5 is formed in the area of the station 15 b by the folding knife 23 b bead-shaped, via the chamber 67 b of the trailing material part is briefly exposed to a lower suction holding force so that it can be easily tightened during this shaping in relation to the associated receiving surface or holding zone 81 b. Immediately with the end of this tightening, the holding force is increased again. That can e.g. B. by the removable from Fig. 14 by laßquerschnitte of the connecting channels 75 b, whose circumferentially adjacent individual openings or individual channels are graduated accordingly in the circumferential direction in their width. This avoids an oblique pulling of the web 5 or the blank 6 before and during the immediately subsequent cut with the tool 22 b.

The runners according to the invention can also be retrofitted already existing folding devices installed or against existing runners are replaced so that a appropriate retrofitting is possible.

Claims (35)

1. Runner for a folding device ( 1 ) for folding sheet layers made of substrate material ( 5 to 8 ) or the like to folding units, with at least one movement, such as a rotary movement, an associated working direction and a working width, determining the runner body ( 46 , 47 or 46 a) for storage on a machine station ( 2 ), the receiving surfaces ( 82 , 83 or 82 a, 83 a), which extend approximately in the working direction, for the material ( 5 to 8 ) and holding means ( 30 , 27 ), such as adhesives or suction means, for the flat fixing of the material ( 5 to 8 ) against the receiving surfaces in holding zones ( 80 , 81 or 80 a, 81 a) one behind the other across the working direction across the working width and in the working direction has, with the holding means ( 27 , 30 ) being assigned work characteristics, namely on the rotor body ( 46 , 47 or 47 a) and the working direction and the working width-related distances between the holding zones, to the rotor body ( 46 , 47 or 46 a) related extents of the holding zones in the working direction, a ratio of the surface-specific holding force at least two holding zones and positive holding forces as a function of the distance of the respective holding zone from a reference base fixed in the working direction, characterized in that that at least one of the working characteristics can be changed with at least one adjusting device ( 48 , 50 , 60 ) or the like. 2. Runner according to claim 1, characterized in that the working characteristics further layers of the holding zones ( 80 , 81 or 80 a, 81 a) relative to the rotor body ( 46 , 47 or 46 a), on the rotor body ( 46 , 47 or 46 a) bezo gene expansions of the holding zones ( 80 , 81 or 80 a, 81 a) in the direction of the working width and positive holding forces in the holding zones, and that at least one of the work characteristics during operation of the runner ( 10 , 11 ) adjustable is. 3. Runner according to claim 1 or 2, characterized in that changing Hal with the labor movement forces are provided. 4. Runner according to one of the preceding claims, characterized in that at least one holding zone ( 80 , 81 or 80 a, 81 a) is essentially constant holding force in its distance from the reference base and / or its surface area changeable. 5. Runner according to one of the preceding claims, characterized in that it has working zones located one behind the other in the working direction with respect to the reference base, such as at least one takeover zone ( 15 , 19 ) which takes over the material ( 5 to 7 ) in a substantially rolling manner, at least one material ( 6 , 7 ) essentially rolling-off delivery zone ( 16 , 18 or 20 ), at least one zone ( 15 , 16 , 18 or 19 , 20 ) processing the material ( 5 to 7 ), at least one essentially slip-free material holding zone and at least one material sliding zone or the like. Of which at least two contiguous function zones have different positive holding forces and / or at least one functional zone is essentially free of positive holding forces. 6. Runner according to claim 5, characterized in that min least one end of at least one functional zone approximately parallel to the working direction opposite in wesent union continuously variable position and that preference as an approximately parallel to the working direction adjustable res, the holding forces and / or the position of the holding zones ( 80 , 81 or 80 a, 81 a) determining control member ( 71 to 73 , 50 or 63 a, 70 a, 48 ) is provided. 7. Runner according to one of the preceding claims, characterized in that at least one control element determining the holding forces in functional zones of the runner ( 70 , 63 a) is designed as an at least partially fixed, but adjustable, orifice for a suction flow during operation, and its control opening ( 66 , 67 or 65 a, 66 a) is connected to the holding zones ( 80 , 81 or 80 a) via channels ( 84 , 84 or 84 a) lying behind the receiving surfaces ( 82 , 83 or 82 a, 83 a). 8. Runner according to claim 7, characterized in that a control opening ( 65 , 66 , 67 or 65 a, 66 a) at least partially on the end face laterally adjacent to the receiving meflächen ( 82 , 83 ) outside the working width and / or at least partially behind the receiving surface ( 82 a, 83 a) is seen over at least part of the working width. 9. Runner according to one of the preceding claims, characterized characterized that side by side across the working width derliegend holding zones are provided, which under different holding forces are assigned. 10. Runner according to one of the preceding claims, characterized in that it has at least two mutually adjustable rotor bodies ( 46 , 47 ), each with little least parts of the receiving surfaces ( 82 , 83 ), at least one tool ( 22 , 23 ) or holding means ( 30 ) having. 11. Runner according to one of the preceding claims, characterized in that a first rotor body ( 46 ) at least one transverse cutting tool ( 22 ) and in the working direction up to approximately directly reaching this holding means ( 30 ) and / or a second rotor body ( 47 ) has at least one fold inner former ( 23 ) and holding means ( 30 ) reaching close to it or the separating tool ( 22 ). 12. Runner according to one of the preceding claims, characterized in that at least one receiving surface ( 82 b, 83 b) is formed by at least one cover segment ( 96 to 99 ) or shell member. 13. Runner according to claim 12, characterized in that at least one deck segment ( 96 to 99 ) for bridging a variable in the working direction gap ( 58 b) on the outside of the rotor body ( 46 b, 47 b) is designed as a bridging member moving with the change in width . 14. Runner according to claim 12 or 13, characterized in that at least one deck segment ( 96 to 99 ) directly to the front and / or the rear of at least one working zone of at least one tool ( 22 b, 83 b) which is transverse to the receiving surface ( 82 b, 83 b) b, 23 b) of the rotor body ( 46 b, 47 b) connects. 15. Runner according to one of claims 12 to 14, characterized in that at least two mutually overlapping parallel to the working direction and / or mutually ver sliding deck segments ( 96 , 98 and 97 , 99 ) are provided. 16. Runner according to claim 15, characterized in that an outer deck segment ( 96 , 97 ) with an inner periphery on the outer periphery of an inner deck segment ( 98 , 99 ) slides and / or that an inner deck segment ( 98 , 99 ) in union union over its Extension in the working direction since Lich on at least one rotor body ( 46 b, 47 b) is supported with its inner circumference. 17. Runner according to one of claims 12 to 16, characterized in that an outer cover segment ( 96 , 97 ) since Lich adjacent to an inner cover segment ( 98 , 99 ) on the rotor body ( 46 b) is attached. 18. Runner according to one of claims 12 to 17, characterized in that of two adjacent in the working direction at a distance from each other, mutually variable in the gap width and on both sides of a deck segment ( 96 to 99 ) lying gaps ( 58 b) each because the widest State is bridged essentially by an outer cover segment ( 97 ) and essentially by an inner cover segment ( 98 ). 19. Runner according to one of claims 12 to 18, characterized in that at least one cover segment ( 96 to 99 ) holding means ( 85 b) for flat fixing of the materi ales ( 5 , 6 ) against the associated receiving surface ( 82 b, 83 b ) forms. 20. Runner according to one of claims 12 to 19, characterized in that at least one gap ( 58 b) between mutually adjustable rotor segments ( 89 , 90 ) of two rotor bodies ( 46 b, 47 b) as a fluid chamber for applying fluid to at least one receiving surface ( 82 b, 83 b) and / or of the gap ( 58 b) ingested area of the outer circumference of the rotor is ausgebil det. 21. Runner according to one of claims 12 to 20, characterized in that at least one cover segment ( 96 to 99 ) of grid-like suction openings ( 85 b) for the material ( 5 , 6 ) is penetrated. 22. Runner according to one of claims 12 to 21, characterized in that at least one cover segment ( 96 to 99 ) is formed by a plate material, such as a curved sheet metal. 23. Runner according to one of the preceding claims, characterized in that at least one interchangeable receiving segment ( 58 ) with parts of the receiving surfaces ( 83 ) or with holding means ( 30 ) for arrangement in a gap between the rotor bodies ( 46 , 47 ) is provided. 24. Runner according to one of the preceding claims, characterized in that two mutually adjustable Läu ferkkörper ( 46 , 47 ) in the region of at least one bearing with bearing sections ( 56 , 57 ) for mutually support-free, separate immediate storage on the machine frame ( 2nd ) are provided. 25. Runner according to claim 24, characterized in that associated bearings ( 53 , 54 and 55 , 59 ) are axially immediately adjacent to each other. 26. Runner according to claim 24 or 25, characterized in that a first rotor body ( 46 ) at least one bearing section ( 56 ) on the outer circumference of a bearing sleeve and a second rotor body ( 47 ) at least one Lagerab section outside the bearing sleeve on the outer circumference of a bearing sleeve ( 56 ) passing through the inner shaft ( 57 ) and that preferably two bearing sections ( 56 b) are formed in one piece with one another at opposite ends of the first rotor body ( 46 b). 27. Runner according to one of the preceding claims, characterized in that two mutually adjustable Läu ferkkörper ( 46 , 47 ) for the drive movement separate, in work in the working direction compared to the respective rotor body ( 46 , 47 ) fixed drive members ( 37 , 40 ) exhibit. 28. Runner according to claim 27, characterized in that the drive members ( 37 , 40 ) for synchronous and against each other of the adjustable drive by a control device ( 50 ), such as a planetary gear, are formed. 29. Runner according to claim 27 or 28, characterized in that preferably only one rotor body ( 47 ) has an output member ( 41 ) for driving at least one further rotor ( 12 , 14 ) or the like. 30. Folding device for folding sheet layers of substrate material ( 5 to 8 ) or the like. Folding units ( 7 , 8 ), with at least one runner ( 10 to 14 ) trained in particular according to the preamble of claim 1, which with, positive holding forces determining, Haltzo NEN ( 80 , 81 or 80 a, 81 a) for the material ( 5 to 8 ) runs through running and functional routes, characterized in that control means ( 48 , 50 , 60 ) for changing the positive holding forces the respective holding zone ( 80 , 81 or 80 a, 81 a) are seen in contiguous stretches. 31. Folding device according to claim 30, characterized in that a first stretch with a higher holding force than a subsequent second stretch is subsequently provided in the working direction, for example, to a cross-cutting or pre-folding station ( 15 ). 32. Folding device according to claim 31, characterized in that the second stretch in the area of a transfer or folding station ( 16 ) for the material ( 6 ) to the first stretch and / or in the working direction to a subsequent de, of holding forces essentially free third route connects and that preferably the third route extends in the working direction substantially to the beginning of the first route. 33. Folding device according to one of claims 30 to 32, characterized in that a runner ( 12 ) two in Ar beitsrichtung at successive takeover or folding stations ( 16 , 20 ) for optional takeover of the material ( 6 , 7th ) are assigned under fold formation. 34. Folding device according to claim 33, characterized in that the rotor ( 12 ) fold outer former ( 28 ), such as gripper ( 29 ), for optional formation of a first fold and a second, compared to the first fold multilayered fold. 35. Folding device according to claim 33 or 34, characterized in that the runner ( 12 ) in two partially ge as well as common running distances for the materi al ( 6 to 8 ), namely a shorter first running distance and a second running distance is provided to form a higher number of folds than the first running distance.