EP2808280B1 - Conveying system for a textile system and textile system with conveying system - Google Patents

Description

The invention relates to a conveyor system for a textile plant according to the preamble of claim 1. Furthermore, the invention relates to a textile plant with such a conveyor system according to claim 10.

A textile system is used for processing material webs, in particular of sticky cord material webs, which have textile and / or steel wires for reinforcement. These webs are cut in a cutting device of the textile plant into strips, which are then spliced together at their edges adjacent to the cutting edge. Splicing is a type of connection that allows a very durable connection without the need for additional connectors. As a result, spliced endless belts are produced, as required for example in the tire industry for the production of tire carcasses. The web, which is usually relatively thin and sticky, is thereby withdrawn from a supply roll and guided by means of the conveyor to the next component, usually a cutting device.

A width of the unwound in the unwinding web can be, for example, one to two meters. At least for commissioning, a new beginning of the material web is to be introduced from the unwinding station into the remaining textile plant. The handling of this beginning of the material web is relatively expensive due to the relatively large width of the thin and sticky material web.

It is therefore known to provide a conveyor system of rollers following the unwinding station, wherein for transferring the beginning of the material web from the unwinding station to the near-by cutting device, the web is passed between two rollers, one of which is driven. With the help of these rollers, a supportive conveyance of the manually drawn material web is achieved. The applied by a user operating forces are thus kept low.

By such a conveyor system, however, the generally thin and sticky material of the material web is not sufficiently supported. This can lead to wrinkling, which impairs the manufacturing accuracy in the further process. Due to the stickiness of the material web, undesired adhesion of the material web to the rollers can also take place. In particular, after longer periods of downtime, for example, after retooling or maintenance of the textile plant, while the material can adhere to one of the roles and be pulled around the role in Neueinlauf the textile machine. The known conveyor system does not always work satisfactorily.

In US 4,832,243 is described a conveyor system for strip-like materials, in which a pressure roller is located in the region between the deflection rollers of a single conveyor belt. This pressure roller serves to press the material against the stationary conveyor belt, while the conveyor belt is moved relative to other conveyors in translation.

The invention is based on the object to eliminate the disadvantages of the prior art and in particular to provide a conveyor system for a textile plant, is ensured with the safe and especially wrinkle-free transfer of the material web and has a high reliability.

According to the invention this object is achieved by a conveyor system having the features of claim 1 and a textile system with the features of claim 10. Advantageous embodiments can be found in the subclaims.

In a conveyor system for a textile plant for transferring an initial material web, in particular a sticky Cordmaterialbahn with textile and / or steel wires of a plant component to an adjacent plant component is therefore provided according to the invention that the conveyor system between a conveyor start and a conveyor end several circumferentially guided, parallel to each other arranged conveyor belts and a pivotally mounted pressure roller, wherein the material web at the beginning of the conveyor are pressed by the pressure roller to the conveyor belts.

The conveyor belts enable a large-area support of the supplied material web and bridge in particular a slightly larger distance between the adjacent system components, without causing sagging of the material web. In this case, the web can be supported over its entire width. Wrinkling is minimized. About the pressure roller while the web can be pressed in the region of the beginning of the conveyor on the conveyor belts, so that they adhere securely to the conveyor belts and can be taken reliably by them. For this purpose, the pressure roller can be guided laterally on pivoting arms in order to pivot between an open position in which a gap between the pressure roller and the conveyor belts is greater than a thickness of the material web and a pressure position in which the pressure roller generates a pressure force between itself and the conveyor belt become.

To generate the pivoting movement, the pressure roller is preferably pressed via at least one Akktuator, in particular a cylinder in the direction of conveyor belts. With a cylinder, in particular a pneumatic cylinder, the required actuating forces are relatively easy to apply, with the control of the pneumatic cylinder is quite simple. In a preferred embodiment, two cylinders are provided, which act on the lateral pivot arms of the pressure roller. This achieves a uniform pressure distribution.

A simple and reliable detachment of the material web from the conveyor belts is achieved in that a scraping plate is arranged at the conveyor end. The supplied material web is thus detached over its entire width from the supporting conveyor belts. Even after prolonged downtime while a reliable detachment of Material web reached by the conveyor belts, so that a gluing of the web to the conveyor belts and a pulling around the material web around the conveyor end is not to be feared. Even during the downtime of the textile plant, the material web can therefore rest without any problems on the conveyor belts.

Fingers of the stripper extend between the conveyors. The conveyor belts are thus arranged with a certain distance from each other, this distance being bridged by the fingers of the Abstreifblechs. This results in a uniform material support over a substantially flat surface, in which an upper side of the conveyor belts is arranged slightly higher than an upper side of the fingers in order to avoid sticking of the material to the fingers. For a uniform promotion is achieved. The occurrence of wrinkles in particular parallel to the conveying direction is prevented by the fingers of Abstreifblechs. The scraping plate is formed with the fingers in the form of a rake. The fingers facilitate thereby a detachment of the material web at the delivery end.

In a preferred embodiment, the conveyor belts are deflected at the conveyor end and at the beginning of the conveyor in each case via deflecting rollers which are designed in particular as toothed wheels, the conveyor belts having a toothed structure on the inside. This allows a good transfer of force from the pulleys on the conveyor belts. Slippage of the conveyor belts on the pulleys is thus avoided. Thus, a synchrony between the conveyor belts can be ensured, which is required for a wrinkle-free transport of the material web.

In this case, it is particularly preferred that the deflection rollers arranged at the beginning of the conveyor and the deflection rollers arranged at the conveyor end are each arranged on a common axis, wherein at least one of the axes is driven. By arranging on a common axis, a synchronous rotation of the pulleys is ensured. By driving an axle, for example via a direct drive or via a belt drive, a synchronous movement of the conveyor belts can then be generated with which the material web is conveyed to the next system component. In this case, a fairly simple structure is obtained.

To compensate for differences in length, which may occur for example due to aging of the conveyor belts, preferably a clamping device acts on the Conveyor belts. The tensioning device can for example have tension rollers and act on a returning strand of the conveyor belts.

Preferably, the pressure roller is elastically formed and stored in particular free-running. Due to the elastic configuration of the pressure roller pressure peaks are avoided when pressing the material web and achieved a uniform force distribution. As a result, damage to a surface of the material web is hardly to be feared. By a free-running storage of the pressure roller, so an embodiment of the pressure roller without its own drive, no shear forces between the pressure roller and the conveyor belts are generated when conveying the material web. The load on the material web is kept so low. At the same time, the structure of the conveyor system is simplified.

In a preferred embodiment, the pressure roller is arranged above one of the axes. When pressing the material web to the conveyor belts, the force is then transmitted directly through the pulleys on the axis. A pressing of the conveyor belts by the pressure roller can not be done so because they are acted upon by the pressure roller only in the supported by the deflection rollers area.

Preferably, the conveyor system comprises a frame with at least one mounting means for adjacent system components, on which the conveyor belts and the pressure roller are mounted. The positions of the conveyor belts and the pressure roller to each other are thereby clearly defined, resulting in a stable, simple construction. The conveyor system thus represents an easy-to-handle unit which can be fastened relatively easily to an adjacent system component and thus extends the functionality of this component.

Preferably, in the conveying direction behind the Abstreifblech a pivoting table is arranged, which has an air strip for forming an air cushion between the pivoting table and the material web. As a result, even larger distances between adjacent system components can be bridged without the conveyor belts needing to be formed unnecessarily long. Due to the formation of an air cushion between the swivel table and the material web, a friction between the material web and the swivel table is minimized. The drive forces that can be generated by the conveyor belts then suffice to convey the material web over the pivoting table. Even with sticky cord material wrinkling due to the air cushion is hardly to be feared. In addition, one is Angle adjustment possibly quite simply possible without the material web adhering to the turntable.

In a proper textile plant with such a conveyor system is provided that the conveyor system between a unwinding station and a cutting device is arranged and in particular attached to the unwinding, wherein the conveyor start of the unwinding and the conveying end of the cutting device are assigned. For example, the conveyor system is screwed with its frame with a frame of the unwinding station. The unwind station may have a dancer roll to provide a uniform tension of the web. By the conveyor system while a beginning of the web is guided by the unwinding horizontally towards the cutting device, wherein a flat support of the material web takes place. Accordingly, the web, which is usually very thin and sticky, conveyed evenly.

It is particularly preferred that a pivoting table of the conveyor system partially rests on a table top of the cutting device, wherein in particular a connecting element below the table top is rotatably mounted on the cutting device and rigidly attached to the unwinding station. By means of the table top, a gap is bridged between the conveying end of the conveyor belts or the stripper plate and the cutting device, it being possible for an air cushion to be formed above the tilting table. In this case, there is a continuous support of the material web, so that wrinkling is avoided. The system of the swivel table on the table top of the cutting device allows in conjunction with the connecting element an angular adjustment between the unwinding station with the conveyor system and the cutting device. In this case, a defined pivot point is obtained by the rotatable mounting of the connecting element on the cutting device and thus enables a precise angular adjustment.

In the textile system according to the invention, a start of the material web can be manually inserted between the open pressure roller and the conveyor belts, wherein the web is then clamped by pressing the pressure roller between the pressure roller and the conveyor belts and transported with the conveyor belts to the cutting device, wherein in the cutting device a gate of the web takes place and then the pressure roller is opened. By clamping the particular freely rotatable pressure roller with the conveyor belts a secure system of material web is achieved on the conveyor belts. The material web becomes so reliable with the conveyor belts taken. It can be provided that the conveyor belts are automatically moved gradually after transferring the beginning of the web, for example, to support a retraction system of the cutting device.

Fig. 1

eine vereinfachte Schnittdarstellung eines Fördersystems,

Fig. 2

eine Draufsicht auf das Fördersystem,

Fig. 3

eine schematische Schnittansicht des Fördersystems mit geöffneter Andrückrolle,

Fig. 4

das Fördersystem nach Figur 3 mit abgesenkter Andrückrolle,

Fig. 5

das Fördersystem während des Betriebs der Textilanlage,

Fig. 6

ein typisches Layout einer Textilanlage und

Fig. 7

ein erweitertes Layout der Textilanlage.

The invention will be described in more detail below with reference to a preferred embodiment in conjunction with the drawings. Herein show:

Fig. 1

a simplified sectional view of a conveyor system,

Fig. 2

a top view of the conveyor system,

Fig. 3

a schematic sectional view of the conveyor system with open pressure roller,

Fig. 4

the conveyor system after FIG. 3 with lowered pressure roller,

Fig. 5

the conveyor system during operation of the textile plant,

Fig. 6

a typical layout of a textile plant and

Fig. 7

an extended layout of the textile plant.

In FIG. 1 a conveyor system 1 is shown in side view. The conveyor system 1 is located between two adjacent system components, a unwinding station 2 and a cutting device 3. The conveyor system 1, the unwinding station 2 and the cutting device 3 are part of a textile plant, as in the FIGS. 6 and 7 is shown schematically and which serves for the processing of thin and sticky Cordbandmaterial.

The conveyor system 1 has a plurality of mutually parallel conveyor belts 4, which are guided circumferentially at a conveyor start 5 and a conveyor end 6 via pulleys 7, 8. The deflection rollers 7, 8 are each mounted on an axis 9, 10 rotatably mounted in a frame 11 of the conveyor system 1. In this case, the arranged at the beginning of the conveyor 5 axis 9 can be driven by a drive 12. The movement of the axle 9 is transmitted via the deflection rollers 7 on the conveyor belts 4 and the guide rollers 8 with the axis 10 thereof. A lying on an upper run 13 material web is so in one direction from the beginning of the conveyor 5 to the end of delivery 6, in the illustration after FIG. 1 , ie from right to left, promoted. At a lower level Trum 14 of the conveyor belts 4, a clamping device 15 is arranged, with which a voltage of the conveyor belts 4 is adjustable. For example, the tensioning device 15 has tensioning rollers with which it is possible to act on the lower run 14 in order to influence the tension of the conveyor belts 4.

Above the conveyor start 5 and the axis 9, a pressure roller 16 is pivotally mounted on the frame 11 via pivot arms 17. The pressure roller 16 is formed as an elastic roller and extends over the entire machine width, ie over all conveyor belts 4 away. For pivoting the pressure roller 16, a cylinder 18 is provided which acts on the pivot arm 17 and can move the pressure roller between an open position and a pressure position. By means of the cylinder 18 while sufficiently high pressure forces can be generated.

In the conveying direction subsequent to the conveying end 6 a Abstreifblech 19 is arranged, which extends over the machine width and a lying on the conveyor belts material web from the conveyor belts 4 detaches. Subsequent to the Abstreifblech 19, a pivot table 20 is provided which rests with its end facing away from the Abstreifblech 19 on a table top 21 of the cutting device.

Below the conveyor system 1 and the table top 21, a connecting element 22 is arranged, which is rigidly fastened to the unwinding station 2 and via a rotary bearing 23 to the cutting device 3. This results in an angular adjustment of the unwinding station 2 relative to the cutting device 3, a defined pivot point about the pivot bearing 23rd

The conveyor system 1 is connected to its frame 11 via screws 24, 25 as attachment means fixed to the unwinding station 2. Accordingly, with an angular adjustment of the unwinding station 2 with respect to the cutting device 3, the conveyor system 1 is moved together with the unwinding station 2.

In FIG. 2 the conveyor system 1 is shown in plan view. In this case, multiply occurring elements are provided with additional lowercase letters.

In this embodiment, a total of eighteen conveyor belts 4a to 4r are perpendicular to the conveying direction next to each other. Extend between the individual conveyor belts 4a to 4r These fingers 26a to 26q fill spaces between the individual conveyor belts 4a to 4r, so that the material web is supported over its entire width.

The pivot arms 17a, 17b are pivotally mounted on the frame 11 about a common axis 27. But it is also conceivable to store each swivel arm on its own axis. However, the continuous axis 27 has the advantage that a synchronous movement of the pivot arms 17a, 17b is forced upon application by cylinders 18a, 18b and a stiffer construction is obtained.

In the FIGS. 3 to 5 is the insertion process of an initial 28 of a material web 29, which is formed as a cord material web, illustrated by schematic sectional views of the conveyor system 1. First, the pressure roller 16 is in its upper position. For this purpose, it has been pivoted by means of the cylinder 18 about the pivot arms 17 about the axis 27 upwards. Accordingly, a relatively large gap 30 is formed between the conveyor belt 4 and arranged at the beginning of the conveyor pulley 7, through which the beginning 29 of the web has been guided manually.

FIG. 4 shows now the beginning of commissioning or the promotion of the material web 29. For the pressure roller 16 has been pivoted by means of the cylinder 18 in the direction of the conveyor belts 4 and now pushes the web 29 at the beginning 5 against the conveyor belts 4, in this area by the guide rollers. 7 are supported The gap 30 is closed accordingly.

By pressing the material web 29 on the conveyor belts 4 a secure adhesion is achieved, with an adhesion to the fingers 26 is avoided in that they are arranged slightly lower than the conveyor belts 4. The material web 29 is ironed onto the conveyor belts 4, so to speak. Accordingly, a secure, non-slip transport of the material web 29 takes place.

At the end of delivery 6, the web is achieved by means of the Abstreifblechs 19 of the conveyor belts 4. In the presentation after FIG. 4 the beginning 28 of the material web 29 has already been guided over the Abstreifblech 19 and is located above the pivot table 20. Between the pivot table 20 and the beginning of the web 29 is already an air cushion 31 is formed, which is generated by means of an air bar 32 which is parallel to the pressure roller 16 extends. By the air cushion 31, a low-friction movement of the material web 29 is achieved via the pivoting table 20.

FIG. 5 now shows the state of the conveyor system 1 after completion of commissioning, ie during normal operation of the textile plant. The pressure roller 16 has been pivoted back into the upper position and is thus out of action. The conveyor belts 4 support the incoming material web 28 and can thereby be automatically further driven to support a retraction device of a downstream cutting device. For this purpose, a control device can be provided which ensures a stepwise operation of the conveyor belts 4 that is synchronized with the retraction device of the cutting device.

In FIG. 6 a typical layout of the system is shown schematically in plan view, in which the cutting device 3 is used with a high holder and a splicer 34 as a unit. The material web is withdrawn from supply rolls in an unwinding station 2 and fed via a table top 21 of the cutting device 3. The wound with the material web rolls are hung and unwound in an unwinder of the unwinding station 2. In this case, the material web to be processed, for example, a combined Cordbahn, separated from an intermediate layer, which is made as a film, made of linen or the like, which serves to prevent sticking of the usually rubberized band. The unwinding station 2 can be designed as a single unwinder, in which only a single role is mounted, or as Doppelabwickler with a turntable for hanging at least two rolls of material, being withdrawn from a roll, the tape, while the other can be replaced. Instead of a turntable can also be provided a shuttle frame. Depending on the design, the roll can be hung directly in the unwinding station, or arranged in a cassette which is accommodated in the unwinding station. Further embodiments of the unwinding station are also possible.

In order to realize different cutting angles, the unwinding station 2 is arranged pivotably relative to the cutting device 3. In this case, provided between the unwinding station 2 and the cutting device 3 conveyor system 1 is pivoted together with the unwinding station 2 if necessary. The material web to be processed is drawn into the cutting device 3 via the pivoting table 11.

With the aid of the cutting device 3, strips of the material web are cut in a defined width and at a defined angle. As an alternative to a cutting device, which is constructed in the form of a guillotine with upper blade and lower blade, other types can be used. For example, there are circular knife scissors with a fixed lower blade and a circular blade running along it and scissors with a rapidly rotating saw blade, which are constructed similar to a circular saw.

In order to promote the new material web start again after cutting the strip through the blade opening from the feed side to the discharge side and to pull the desired strip width, a retraction device 35 is arranged in the feed direction behind the blade opening or the cutting gap, ie on the discharge side. An embodiment of such a retraction device is, for example, in DE 10 113 379 described.

Subsequently, the cut material web strips are connected to each other again with their edges adjacent to the cutting edge. For this purpose, one or more splicing devices 34 are provided on the removal side of the cutting device 3, in this case an overlap splicer 36 and a butt splicer 37. Splicing is a purely mechanical joining without the aid of additives, the strips cut off by the cutting device 3 their narrow sides are connected. Frequently, an overlap splicer is used, in which the ends of the strips are overlapping each other and are connected overlapping by pressurization in the overlap splicer. The splicing device is usually pivotable in order to process the strips in different angles can. But it is also common to provide fixed splicer.

While the overlap splicer 36 is integrally formed with the upper holder 33 disposed behind the knife opening, the stump splicer 37 is alternatively or additionally disposed at a certain distance therefrom, the cut material web strips being conveyed to the butt splicer 37 by a conveyor 38 such as a conveyor belt , There, the web strip are connected butt.

The conveyor 38 is in each case progressively advanced by one strip length in each case in order to be able to position the respectively cut-off material web strips in succession on the conveyor 38.

The material web strips which are again connected to one another are fed to a rewinder 41 via an optional settling roller 39 and via an optional document device 40. In the documenter 40 further rubber strips, for example up to 12 pieces, can be placed simultaneously on the interconnected strips. In this case, a border of outer edges can be done by, for example, a rubber strip is placed on the outer edge with projection and wrapped around the edge. Thus, a cord exposed on the outer edge is sheathed.

In the winder 41, the interconnected material web strips are wound up again on bobbins. As a rule, an intermediate layer which prevents sticking of the individual layers is wound up with it. For the rewinder, there are various embodiments: The rewinder may for example be designed as a single winder, in which the interconnected strips must be manually deflected and fed to a new role, but it is also known to provide fully automatic rewinder, in which no operator intervention for handling necessary.

In Fig. 7 an expanded overall system layout is shown in which, following the splicing devices optionally behind an optional reassurance roller 39, a longitudinal cutting device 42 is provided through which the strip web produced is guided and thereby separated, for example, in two longitudinal paths. These two longitudinal tracks are then fed to two rewinders 41a, 41b. This increases the output of the system. In the longitudinal cutting device 42, which is also referred to as a slitter find round blade use in the rule.

Between the longitudinal cutting device 42 and the rewinder 41a, 41b can optionally after, as in the overall system layout after Fig. 6 be provided correspondingly constructed Belegevorrichtungen 40a, 40b

In the FIGS. 6 and 7 only typical plant layouts are shown for illustrative purposes. For example, a mirror-image construction is likewise possible without any problems, as is the provision of additional or omission of individual system elements.

By means of the conveying system according to the invention, the commissioning or the introduction of a new material web roll and the transfer of the beginning of the material web are simplified. This will provide sufficient support of the usually thin and sticky material, in particular of cord material, ensured, and allows a wrinkle-free promotion. Even with longer downtime of the textile system while sticking the material web to the conveyor belts is unproblematic, since a secure detachment of the material web is ensured by a Abstreifblech. During normal operation of the textile plant, support can be achieved by running along the conveyor belts.

In the illustrated arrangement of the conveyor system between the unwinding station and the cutting device, the conveyor system can also be arranged at other suitable locations in order to facilitate an easier transfer of an initial material web from one system component to the adjacent system component.

The invention is not limited to one of the above-described embodiments, but can be modified in many ways.

All of the claims, the description and the drawings resulting features and advantages, including design details, spatial arrangements and method steps may be essential to the invention both in itself and in various combinations.

LIST OF REFERENCE NUMBERS

1. 1 conveyor system
2. 2 unwinding station
3. 3 cutting device
4. 4 conveyor belts
5. 5 start of delivery
6. 6 sponsors
7. 7 pulleys
8. 8 pulleys
9. 9 axis
10. 10 axis
11. 11 frames
12. 12 drive
13. 13 upper run
14. 14 lower course
15. 15 clamping device
16. 16 pressure roller
17. 17 swivel arm
18. 18 cylinders
19. 19 scraping plate
20. 20 swivel table
21. 21 table top
22. 22 connecting element
23. 23 pivot bearings
24. 24 screw
25. 25 screw
26. 26 fingers
27. 27 axis
28. 28 start
29. 29 material web
30. 30 gap
31. 31 air cushions
32. 32 air strip
33. 33 high holders
34. 34 splicer
35. 35 retraction device
36. 36 overlap splice
37. 37 butt splicer
38. 38 conveyor
39. 39 reassuring role
40. 40 documenting device
41. 41 rewinder
42. 42 longitudinal cutting device

Claims (11)

1. Conveyor system (1) for a textile unit to transfer the start (28) of a material web (29) in particular an adhesive chord material web with textile and/or steel wires from one unit component (2) to an adjacent unit component (3), characterised in that the conveyor system (1), between the beginning (5) of the conveyor and the end (6) of the conveyor, comprises a plurality of conveyor belts (4) guided circumferentially and arranged parallel to each other and a pressure roller (16) mounted so as to be pivotable, wherein the material web (29) at the beginning (5) of the conveyor can be pressed by the pressure roller (16) on the conveyor belts (4), wherein a wiper (19) is arranged at the end (6) of the conveyor and fingers (26) of the wiper (19) extend between the conveyor belts (4).
2. Conveyor system according to claim 1, characterised in that the pressure roller (16) can be pressed by means of at least one actuator, in particular by means of at least one cylinder (18) in the direction of the conveyor belts (4).
3. Conveyor system according to any one of the preceding claims, characterised in that the conveyor belts (4) are deflected at the end (6) of the conveyor and at the beginning (5) of the conveyor by means of deflection rollers (7, 8) which are in particular designed as toothed wheels, wherein the conveyor belts (4) comprises a toothed structure inside.
4. Conveyor system according to claim 3, characterised in that the deflection rollers (7) arranged at the beginning (5) of the conveyor and the deflection rollers (8) arranged at the end (6) of the conveyor are arranged on a common axle (9, 10), wherein one of the axles (9, 10) is driven.
5. Conveyor system according to any one of the preceding claims, characterised in that a tensioning device (15) acts on the conveyor belts (4).
6. Conveyor system according to any one of the preceding claims, characterised in that the pressure roller (16) is designed resiliently and is in particular mounted in a free-running manner.
7. Conveyor system according to any one of the preceding claims, characterised in that the pressure roller (16) is arranged above one of the axles (9, 10).
8. Conveyor system according to any one of the preceding claims, characterised in that it comprises a frame (11) with at least one attachment means (24, 25) for adjacent unit components (2, 3) on which the conveyor belts (4) and the pressure roller (6) are mounted.
9. Conveyor system according to any one of the preceding claims, characterised in that a swivel table (20) is arranged in the conveying direction behind the wiper (19), said swivel table has an air stream (32) to form an air cushion (31) between the swivel table (20) and the material web (29).
10. Textile unit with a conveyor system according to any one of the preceding claims, wherein the conveyor system (1) is arranged between an unwinding station (2) and a cutting device (3) and is in particular fastened to the unwinding station (2), wherein the beginning (5) of the conveyor is assigned to the unwinding station (2) and the end (6) of the conveyor is assigned to the cutting device (3).
11. Textile unit according to claim 10, characterised in that the swivel table (20) partially rests on a table top (21) of the cutting device (3), wherein a connection element (22) is in particular fastened under the table top (21) so as to be rotatable on the cutting device (3) and rigid on the unwinding station (3).

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