Die machine and drive member attached thereto

Abstract

A drive member for driving a sheet of workpiece through a die machine includes a backing layer including a first surface defined by a first width in a first dimension and a first length in a second dimension, and a padding layer including a first surface defined by a second width in the first dimension and a second length in the second dimension. The padding layer is composed of a compressible foam material. In the uncompressed state of the padding layer, the second length of the padding layer is longer than the first length of the backing layer. In the compressed state of the padding layer, the padding layer is compressed along the second dimension to match the first length of the backing layer, and the first surface of the padding layer is bonded to the first surface of the backing layer.

Description

Technical Field

[0001] The present disclosure relates to a die machine (type machine), and more particularly to a die machine and one or more drive members mounted on the die machine for driving a sheet of workpiece through a gap between a pair of rotating cylinders of the die machine.

Background Art

[0002] Die machines are widely used in forming products from sheets of workpieces. The product may be a box, and the sheet of workpiece may be, for example, cardboard that is processed in several processing sections of a production line including a cutting section, a wire insertion section, a printing section, and a die-cutting section.

[0003] The present disclosure is illustrated by way of example and not limitation in the figures of the accompanying drawings.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Brief Description of the Drawings

[0005] [[ID=……]] [Figure 1A] Shows a diagram of components of a drive member according to an embodiment of the present disclosure. [Figure 1B] Shows a diagram of components of a drive member according to an embodiment of the present disclosure. [Figure 2] Shows a drive member including a backing layer and a compressed padding layer coupled to each other according to an embodiment of the present disclosure. [Figure 3] Shows a drive member bent around a die cylinder according to an embodiment of the present disclosure. [Figure 4] Shows a drive member including a fastening device in an engagement position according to an embodiment of the present disclosure. [Figure 5]This document shows the processing steps for providing a drive member according to an embodiment of the present disclosure. [Modes for carrying out the invention]

[0006] Taking corrugated cardboard boxes as an example, a corrugated cardboard box production line may include several processing sections for processes such as cutting, creasing, printing, and die-cutting. Each processing section may include one or more machines fitted with different types of tools to perform one or more of the processes of cutting, creasing, printing, or die-cutting.

[0007] The die machine may include a pair of cylinders stacked close together with a gap between them, allowing a sheet of workpiece to pass through the gap between the upper and lower cylinders during the machining process. The die machine may include one or more motors that can rotate the pair of cylinders in opposite directions during operation. That is, when viewed from the side facing the cross-section of the cylinders, one cylinder rotates clockwise and the other rotates counterclockwise. The pair of cylinders may include die cylinders to which tools are mounted. Depending on the process performed by the die machine, the tools mounted on the die cylinders may be cutting blades or marking rulers. The pair of cylinders may further include an anvil cylinder (cylindrical support) to which one or more anvil pads made of a soft material are attached, which act as a buffer against the tool when machining the sheet of workpiece. During the machining process, a sheet of workpiece may be fed into the gap between the two cylinders. The rotational motion of the two cylinders in opposite directions may drive the workpiece sheet so that the tool mounted on the die cylinder can perform a cutting, scribing, or punching process while the sheet is being fed through the die machine.

[0008] Machines in the processing section of a production line (e.g., printing machines, grooving machines, die-cutting machines, etc.) may operate to sequentially process sheets of workpieces such as cardboard, plastic sheets, and corrugated cardboard. Depending on the embodiment, different types of products may be produced using the production line. Certain products may require only some of the processing steps available on the production line, rather than all of them. Therefore, to produce a product, it may be necessary to remove the tools from certain die machines on the production line, i.e., to allow these die machines to perform only dummy runs. In a dummy run, the die machine does not perform any cutting, scribing, or punching steps, and does not make any changes to the workpiece sheet. The purpose of the dummy run is to move the workpiece sheet to the next die machine on the production line. When the tools are removed from a die machine, a large gap may remain between the lowest contour line of the die cylinder and the highest contour line of the anvil cylinder. If no tool is mounted on the die cylinder, the gap between the die cylinder and the anvil cylinder can become very wide, preventing the surface of the die cylinder from contacting the workpiece sheet and thus making it impossible to generate the frictional driving force needed to drive the workpiece sheet through the die machine during simulated operation. In such situations, one or more drive members (also called "speed straps") may be mounted in place of the tool. The thickness of the drive members can reduce the gap between the die cylinder and the anvil cylinder, thereby generating frictional force on the workpiece sheet and driving the workpiece sheet through the die machine during simulated operation.

[0009] In this disclosure, a drive member (i.e., a speed strap) refers to a flexible mechanical component having a certain thickness that is securely attached to a cylinder of a die machine and can reduce the clearance between that cylinder and another cylinder of the die machine, and when a sheet of workpiece is fed into the gap between the two cylinders, the drive member can directly contact the surface of the sheet of workpiece, generating a frictional force on the surface of the sheet, thereby driving the sheet by the rotational motion of the two cylinders. The drive member may include one or more layers of flexible material, including an inner surface that contacts the cylinder (e.g., a die cylinder) and an outer surface of a soft friction material that can generate sufficient frictional force to drive the sheet of workpiece during the process.

[0010] In current applications, a speed strap may include a layer of foam material having a thickness (e.g., about 0.75 inches) and a backing layer of magnetic material. In this case, the layer of foam material may be bonded to the backing layer. The foam material in this disclosure refers to a group of solid cellulose structures that contain trapped air pores (i.e., bubbles). The foam material may be soft, and due to its softness and the trapped air pores, the size of the foam material may be compressible. In its natural state, when no external force (other than gravity) is artificially applied to a piece of foam material, the piece of foam material may have a certain volume. For example, a rectangular parallelepiped of foam material may be defined by a width in the first dimension, a length in the second dimension, and a thickness in the third dimension. The compressibility of the foam material means that the shape of the foam material can be reduced or expanded in any of the three dimensions by an external force applied to the foam material. When the foam material is expanded, the softness of the surface of the foam material may decrease.

[0011] A layer of foam material may be bonded to a backing layer using an adhesive (e.g., glue) to form a drive member. The drive member may be bent so that its inner surface matches the surface of the die cylinder, in which case the backing layer is an inner layer magnetically coupled to the die cylinder, and the foam layer is an outer layer providing a soft, frictional surface for driving the workpiece sheet. In the current implementation of the drive member, the foam layer is stretched along its outer surface from its natural state, which can add stiffness to the foam layer when the drive member is bent. During operation, the added stiffness can create a reaction force that counteracts the magnetic force bonding the backing layer to wrap around the die cylinder. This increased reaction force overcomes the magnetic coupling force between the magnetic backing layer and the die cylinder, which can cause the drive member to easily detach from the die cylinder as the cylinder rotates and the workpiece sheet is fed through the die machine. In some cases, this can result in overflow on the production line or jams in downstream machines. Stacks of workpiece sheets can prevent the die machine from pushing the workpiece sheets through during simulated operation, potentially causing the drive member to detach from the die cylinder. Furthermore, if the die cylinder rotates at a speed higher than normal, a centrifugal force counteracting the magnetic force acting on the drive member can also occur, potentially causing the drive member to detach from the die cylinder. This centrifugal force is an apparent force acting outward on the surface of the drive member, centered on the die cylinder's central axis, and is generated by the inertia of the drive member and die cylinder.

[0012] Another problem with the current implementation of the drive member is that it does not wrap completely around the die cylinder. In this type of design, it becomes more difficult to time the contact between the drive member and the workpiece seat as it passes through the die machine. The timing of the die machine needs to be precise so that the drive member contacts the workpiece seat and drives the seat forward. To compensate for this drawback, it may be necessary to have two drive members positioned 180° apart on the die cylinder, which ensures contact between the workpiece seat and at least one of the two drive members.

[0013] Patent Document 1 discloses a “sheet material driving member for die-cutting / striping apparatus” that includes a toothed engaging member for friction engagement. However, the teeth are more expensive to form during the manufacturing of the engaging member, and therefore the manufacturing cost of the engaging member increases significantly.

[0014] To overcome the above-mentioned identified and other shortcomings of the current version of the drive member, embodiments of the present disclosure provide a drive member (i.e., a speed strap) for driving a sheet of workpiece through a die machine. Embodiments of the drive member according to the present disclosure include a backing layer having a first surface defined by a first width in a first dimension and a first length in a second dimension, and a padding layer having a first surface defined by a second width in a first dimension and a second length in a second dimension, wherein the padding layer is composed of a compressible foam material. In one embodiment, in the uncompressed state of the padding layer, the second length of the padding layer is longer than the first length of the backing layer, and in the compressed state of the padding layer, the padding layer is compressed along the second dimension to match the first length of the padding layer, and the first surface of the backing layer is bonded to the first surface of the padding layer.

[0015] In one embodiment, the backing layer is composed of a sheet of either magnetic steel or magnetic rubber, and the padding layer is composed of one of synthetic rubber or natural rubber, which includes at least one of polyurethane, ethylene propylene diene monomer (EPDM), polychloroprene (neoprene), or mixed flexible composite synthetic rubber.

[0016] In one embodiment, in an uncompressed state, the padding layer is in its natural state without being subjected to any external force that compresses or expands the padding layer along the second dimension of the padding layer.

[0017] In one embodiment, the padding layer is substantially flat in an uncompressed state before bonding to the backing layer, and in a compressed state after the padding layer is bonded to the backing layer, the padding layer and the backing layer are curved, with the backing layer providing an inner layer of the drive member and the padding layer providing an outer layer of the drive member.

[0018] In one embodiment, the backing layer may include a second surface that coincides with and is substantially parallel to the first surface of the backing layer, where the padding layer may include a second surface that coincides with and is substantially parallel to the first surface of the padding layer, and the thickness of the padding layer is defined as the distance between the first and second surfaces of the padding layer.

[0019] In one embodiment, the padding layer is terminated along a second dimension by a first end face and a second end face, where the padding layer may include a first recessed groove having an exit to the first end face and a second recessed groove having an exit to the second end face.

[0020] In one embodiment, the drive member may further include a fastening device comprising a tab fixedly attached to a first recessed groove and a fastener fixedly attached to a second recessed groove, wherein when the drive member is bent so that the first end face and the second end face are in contact, the exit of the first recessed groove coincides with the exit of the second recessed groove.

[0021] In one embodiment, when the driving member is bent so that the first end face and the second end face are in contact, the tab is secured to the fastener, and the second surface of the backing layer forms a curved surface that coincides with the die cylinder of the die machine.

[0022] In one embodiment, the thickness of the padding layer is uniformly the same at any point on the first surface or the second surface of the padding layer, except for the regions that define the first concave groove portion and the second concave groove portion.

[0023] In one embodiment, the second surface of the padding layer is smooth and has friction.

[0024] In one embodiment, in the non-compressed state of the padding layer, the second length of the padding layer is at least 2% longer than the first length of the backing layer.

[0025] Embodiments of the present disclosure provide a die machine including a die cylinder to which a driving member specified according to various embodiments of a motor, an anvil cylinder, and the driving member is attached. In one embodiment, the motor is operated to rotate the anvil cylinder and the die cylinder in opposite directions, a sheet of the workpiece is provided in the gap between the rotating anvil cylinder and the rotating die cylinder to which the driving member is attached, the second surface of the padding layer of the driving member contacts the sheet of the workpiece, and the frictional force generated by the second surface of the padding layer of the driving member drives the sheet of the workpiece through the die machine without changing the sheet of the workpiece.

[0026] Figures 1A - 1B show two views of the components of the driving member 1 according to an embodiment of the present disclosure. The driving member can be a speed strap used to wrap around the circumferential surface of the die cylinder of the die machine to drive a sheet of the workpiece through the die machine during a dry run. The dry run does not cause a change in the sheet except to move the sheet of the workpiece to the next machine or processing section.

[0027] Referring to Figures 1A and 1B, the drive member 1 may include a backing layer 2 and a padding layer 3. Figure 1A is a side view of the backing layer 2 with the padding layer 3. Figure 1B is a top view of the backing layer 2 and the padding layer 3. In one embodiment, the backing layer 2 may be a thin layer of flexible magnetic material that can be bent to conform to the surface of the die cylinder (not shown) of a die machine. For example, the thin layer of flexible magnetic material may be a sheet of magnetic steel or magnetic rubber. In one embodiment, the backing layer 2 may be a rectangular sheet having a first surface area and a second surface area, each of which is defined by a first width (W1 inch) in the first dimension (D1) and a second length (L1 inch) in the second dimension (D2). When the padding layer 3 is bonded to the backing layer 2, the first surface of the backing layer 2 faces the padding layer 3. When the drive member 1 is wrapped around the die cylinder, the second surface of the backing layer 2 contacts the die cylinder.

[0028] The padding layer 3 can be made of a compressible foam material. As defined above, foam material refers to a group of solid cellulose structures containing trapped air pores (i.e., bubbles 4). Examples of foam materials include, but are not limited to, one of polyurethane, ethylene propylene diene monomer (EPDM), polychloroprene (neoprene), or synthetic rubber or natural rubber containing at least one of a mixed flexible composite synthetic rubber. After the padding layer is manufactured, the total number of bubbles 4 trapped in the padding layer can be constant. Thus, in its natural uncompressed state, the padding layer 3 can occupy a certain volume (v1) with a bubble density (d1). Here, the bubble density is defined as the average number of bubbles per unit volume (i.e., the total number of bubbles 4 in the padding layer 3 divided by the volume occupied by the padding layer 3). When the padding layer 3 is compressed by an external force from either direction, the volume of the padding layer 3 decreases to a smaller volume (v2), while the bubble density increases to a higher density value (d2).

[0029] In one embodiment, in its natural uncompressed state, the padding layer 3 may have the shape of a rectangular parallelepiped defined by a second width (W2 inches) in a first dimension (D1), a second length (L2 inches) in a second dimension, and a second thickness value (T2 inches) in a third dimension. Thus, the volume of the padding layer 3 can be W2 × L2 × T2 cubic inches. Therefore, the padding layer 3 may have a first surface area and a second surface area defined by a second width (W2 inches) in a first dimension and a second length (L2 inches) in a second dimension, respectively. The first surface area of ​​the padding layer 3 is in contact with the first surface area of ​​the backing layer 2 when the padding layer 3 is bonded to the backing layer 2. The second surface area of ​​the padding layer 3 is exposed to the outside when the drive member is wrapped around the die cylinder to provide a friction surface to the sheet of workpiece passing through the die machine.

[0030] In one embodiment, in its natural uncompressed state before the padding layer 3 is bonded to the backing layer 2, the second length value of the padding layer 3 (L2 inches) is longer than the first length value of the backing layer 2 (L1 inches). The longer padding layer 3 may be able to be compressed to a length matching the length of the backing layer 2 when the padding layer 3 is bonded to the backing layer 2. The compressed padding layer 3 may have a less rigid outer surface. Therefore, the drive member 1 manufactured in this manner can generate less reaction force to ensure a more secure bond between the drive member 1 and the die cylinder during operation, and as a result, the drive member 1 is less likely to detach from the die cylinder.

[0031] Figure 2 shows a drive member 1 comprising a backing layer 2 and a compressed padding layer 3 bonded together according to an embodiment of the present disclosure. During the manufacture of the drive member 1, the padding layer 3 may be compressed by external pressure applied toward the center of the padding layer 3 from both directions along the second dimension so that the padding layer 3 is compressed along the second dimension to match the first length of the backing layer 2, and then the first surface of the padding layer 3 may be bonded to the first surface of the backing layer 2 so that its length matches. The first surface of the padding layer 3 is bonded to the first surface of the backing layer 2 using any suitable physical or chemical bonding method that can securely bond the padding layer 3 to the backing layer 2. Examples of bonding methods include the use of adhesives and thermal bonding treatments.

[0032] As shown in Figure 2, when the bond between the padding layer 3 and the backing layer 2 hardens (i.e., the padding layer 3 and the backing layer 2 are firmly bonded), the length of the first surface of the padding layer is compressed to the same length as the first surface of the backing layer. The second surface of the padding layer 3 is not bonded and is relaxed. In this situation, the length of the second surface of the padding layer 3 may be longer than the length of the first surface of the padding layer 3. Therefore, as shown in Figure 3, when the drive member 2 is bent to conform to the contour of the die cylinder, the second surface (i.e., the outer surface) of the padding layer 3 is not fully stretched, resulting in lower surface rigidity. The lower rigidity of the outer surface of the padding layer 3 reduces the reaction force generated during simulated operation, which may reduce the adverse effect on the magnetic coupling between the backing layer 2 and the die cylinder.

[0033] For this purpose, in one embodiment, the first length of the uncompressed padding layer is at least 2% longer than the first length of the backing layer, or at least 5% longer than the first length of the backing layer to ensure that the second surface of the padding layer 3 is relaxed. The ratio is determined as an extra length relative to the first length of the backing layer. Alternatively, the extra length of the padding layer 3 relative to the backing layer 2 may be determined based on the thickness (T2) of the padding layer 3. For example, the extra length may be equal to or greater than the thickness (T2). This ensures that when bent, the second surface of the padding layer 3 is not stretched to the point of becoming rigid.

[0034] The first length of the backing layer 2 may coincide with the circumference of the die cylinder so that the drive member 1 wraps completely around the die cylinder. This may eliminate the need to adjust the timing of contact between the drive member 1 and the feed of the workpiece sheet. In one embodiment, to further strengthen the coupling of the drive member 1 to the die cylinder, the drive member 1 may include a fastening device. Referring to Figures 1A-1B and 4, the padding layer 3 may have a fixed length (L2 inches in an uncompressed state) terminated by a first end face and a second end face along a second dimension. Furthermore, the padding layer 3 may include a first recessed groove 5 with an exit to the first end face and a second recessed groove 6 with an exit to the second end face. The first recessed groove 5 and the second recessed groove 6 may be open spaces cut out from the padding layer 3 for mounting a fastening device 7. In one embodiment, the open spaces have a height that coincides with the total thickness (T2) of the padding layer 3. In another embodiment, the open space has a height lower than the total thickness (T2) of the padding layer 3. In both embodiments, when the drive member 2 is bent so that the first end face and the second end face are in contact, the exit of the first recessed groove 5 coincides with the exit of the second recessed groove 6.

[0035] The fastening device 7 may include a tab 8 fixedly attached to one or both of the backing layer 2 and the padding layer 3 within the first recessed groove 5. The tab 8 may be an elastic strip with an open hole (e.g., a plastic strip). The tab 8 may be secured to the backing layer 2 and / or the padding layer 3 using rivets. In one embodiment, a thin steel washer (e.g., about 0.01 inches thick) is provided on the bottom side of the magnet. The steel washer can reduce the possibility of the rivet tearing the rubber magnet layer. The fastening device 7 may further include a hook (fastener) 9 fixedly attached to one or both of the backing layer 2 and the padding layer 3 within the second recessed groove 6. The hook 9 may be a plastic or metal hook for engaging with the opening of the tab 8. The hook 9 may be secured to the backing layer 2 and / or the padding layer 3 using another rivet. During operation, the drive member 1 is wound around the entire circumference of the die cylinder, allowing the tab 8 to be coupled to the hook 9. In this way, the drive member 1 is preferably constrained by the magnetic force between the magnetic material of the backing layer 2 and the die cylinder. Furthermore, the magnetic restraint force is further strengthened by the fastening device 7, making the restraint force between the drive member 1 and the die cylinder more reliable.

[0036] In one embodiment, the thickness of the padding layer 3 is uniformly the same at any point on the first or second surface of the padding layer 3, except for the regions defining the first and second recessed grooves. The second surface of the padding layer is smooth and frictional. Compared to a drive member with uneven thickness, the molding process of the padding layer 3 is much simpler, and therefore the production cost of the drive member 1 can be significantly reduced.

[0037] The drive member 1 described above can be mounted on the die cylinder of a die machine. In this disclosure, the term "die machine" refers to, but is not limited to, any machine that includes a rotating cylinder (i.e., a die cylinder). In some embodiments, the die machine may include a motor, an anvil cylinder, and a die cylinder on which the drive member 1 is mounted. During operation, the motor of the die machine can operate to drive the anvil cylinder and the die cylinder to rotate in opposite directions. A sheet of workpiece is supplied manually or automatically into the gap between the rotating anvil cylinder and the rotating die cylinder on which the drive member is mounted. The outer surface of the padding layer of the drive member is in contact with the sheet of workpiece, and the frictional force generated by the second surface of the padding layer of the drive member drives the sheet of workpiece through the die machine without deforming the sheet of workpiece.

[0038] Figure 5 shows a processing step 500 for providing a drive member according to an embodiment of the present disclosure. In step 502, the method includes providing a backing layer for the drive member, the backing layer comprising a first surface defined by a first width in a first dimension and a first length in a second dimension.

[0039] In 504, the method further comprises providing a padding layer for a drive member, the padding layer comprising a first surface defined by a second width in a first dimension and a second length in a second dimension, the padding layer comprising a compressible foam material, and in the uncompressed state of the padding layer, the second length of the padding layer is longer than the first length of the backing layer.

[0040] In 506, this method may include compressing the padding layer along a second dimension to match a first length of the backing layer, and bonding the first surface of the padding layer to the first surface of the backing layer.

[0041] The terms “example” or “exemplary” are used here to mean that they serve as examples, analogies, or illustrations. The aspects or designs described herein as “example” or “exemplary” are not necessarily construed as being superior or more favorable than other aspects or designs. Rather, the use of the terms “example” or “exemplary” is intended to present a concept in a concrete way. The expression “or,” as used in this application, is intended to mean an inclusive “or,” not an exclusive “or.” That is, unless otherwise specified or made clear from the context, “X includes A or B” is intended to mean either a natural inclusive substitution. That is, “X includes A or B” is satisfied under any of the aforementioned cases: X includes A, X includes B, or X includes both A and B. Furthermore, the articles “a” and “an” used in this application and the attached claims should generally be interpreted as meaning “one or more,” unless otherwise specified or clearly directed to the singular form from the context. Furthermore, throughout this document, the use of the expressions "example," "one example," "embodiment," or "one embodiment" is not intended to mean the same example or embodiment unless otherwise specified.

[0042] Throughout this specification, the terms "embodiment" or "one embodiment" mean that certain features, structures, or characteristics described in relation to an embodiment are included in at least one embodiment. Therefore, expressions such as "in an embodiment" or "in one embodiment" appearing in various parts throughout this specification do not necessarily all refer to the same embodiment. Furthermore, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or."

[0043] It should be understood that the above description is descriptive and not restrictive. Many other embodiments will become clear to those skilled in the art upon reading and understanding the above description. Therefore, the scope of this disclosure should be determined by referring to the appended claims, along with the entire scope of the equivalents to which such claims are entitled.

Claims

1. A drive member for driving a sheet of workpiece through a machine, A backing layer comprising a first surface defined by a first width in the first dimension and a first length in the second dimension, A padding layer made of a compressible foam material includes a first surface defined by a second width in the first dimension and a second length in the second dimension, Equipped with, The second length of the padding layer is longer than the first length of the backing layer. The padding layer is compressible and is compressed and bonded to the backing layer. The padding layer is compressed along the second dimension to match the first length of the backing layer. A drive member wherein the first surface of the padding layer is bonded to the first surface of the backing layer.

2. The drive member according to claim 1, wherein the backing layer is composed of a sheet of magnetic steel or magnetic rubber, and the padding layer is composed of natural rubber or synthetic rubber, the synthetic rubber comprising at least one of polyurethane, ethylene propylene diene monomer (EPDM), polychloroprene (neoprene), or mixed flexible composite synthetic rubber.

3. The drive member according to claim 1, wherein the second surface of the padding layer is not bonded and is relaxed.

4. The drive member according to claim 1, wherein the padding layer and the backing layer are bent such that the backing layer becomes the inner layer of the drive member and the padding layer becomes the outer layer of the drive member.

5. The drive member according to claim 1, wherein the backing layer includes a second surface that coincides with and is parallel to the first surface of the backing layer, and the padding layer includes a second surface that coincides with and is parallel to the first surface of the padding layer, and the thickness of the padding layer is defined as the distance between the first surface and the second surface of the padding layer.

6. The drive member according to claim 5, wherein the padding layer is terminated along the second dimension by a first end face and a second end face, and the padding layer includes a first recessed groove having an exit to the first end face and a second recessed groove having an exit to the second end face.

7. The fastening device further includes an elastic tab fixedly attached to at least one of the backing layer or the padding layer in the first recessed groove, and a fastener fixedly attached to at least one of the backing layer or the padding layer in the second recessed groove, The drive member according to claim 6, wherein when the drive member is bent so that the first end face and the second end face are in contact, the outlet of the first recessed groove coincides with the outlet of the second recessed groove.

8. The drive member according to claim 7, wherein the machine is a die machine, and when the drive member is bent so that the first end face and the second end face are in contact, the tab is fixed to the fastener of the fastening device, and the second surface of the backing layer forms a curved surface that matches the die cylinder of the die machine.

9. The drive member according to claim 5, wherein the thickness of the padding layer is uniformly the same at any point on the first surface or the second surface of the padding layer, except for the region defining the first recessed groove and the second recessed groove.

10. The driving member according to claim 5, wherein the second surface of the padding layer has friction.

11. The drive member according to claim 1, wherein the second length of the padding layer is at least 2 percent longer than the first length of the backing layer or at least 5 percent longer than the first length of the backing layer.

12. A die machine comprising a motor, an anvil cylinder, and a die cylinder to which the drive member described in claim 1 is attached.

13. The die machine according to claim 12, wherein the motor operates to drive the anvil cylinder and the die cylinder to rotate in opposite directions, the sheet of the workpiece is supplied into the gap between the rotating anvil cylinder and the rotating die cylinder on which the drive member is mounted, the second surface of the padding layer of the drive member contacts the sheet of the workpiece, and the frictional force generated by the second surface of the padding layer of the drive member drives the sheet of the workpiece, causing it to pass through the die machine without deformation of the sheet of the workpiece.

14. A method for providing a drive member, To provide a backing layer for the drive member, the backing layer comprising a first surface defined by a first width in a first dimension and a first length in a second dimension, To provide a padding layer for the drive member, comprising a first surface defined by a second width in the first dimension and a second length in the second dimension, composed of a compressible foam material, wherein in the uncompressed state of the padding layer, the second length of the padding layer is longer than the first length of the backing layer, Compressing the padding layer along the second dimension to match the first length of the backing layer, Bonding the first surface of the padding layer to the first surface of the backing layer, A method that includes [a certain feature].

15. The method according to claim 14, wherein the backing layer includes a second surface that coincides with and is parallel to the first surface of the backing layer, and the padding layer includes a second surface that coincides with and is parallel to the first surface of the padding layer, and the thickness of the padding layer is defined as the distance between the first surface and the second surface of the padding layer.

16. The method according to claim 15, wherein the padding layer is terminated along the second dimension by a first end face and a second end face, and the padding layer includes a first recessed groove having an exit to the first end face and a second recessed groove having an exit to the second end face.

17. The fastening device further includes a tab fixedly attached to at least one of the backing layer or the padding layer within the first recessed groove, and a fastener fixedly attached to at least one of the backing layer or the padding layer within the second recessed groove, The method according to claim 16, wherein when the drive member is bent so that the first end face and the second end face are in contact, the outlet of the first recessed groove coincides with the outlet of the second recessed groove.

18. The drive member is further mounted on the cylinder of the machine such that the first end face and the second end face are in contact by fixing the tab to the fastener, The method according to claim 17, wherein the second surface of the backing layer forms a curved surface that matches the cylinder of the machine.

19. The method according to claim 14, wherein the backing layer is composed of a sheet of magnetic steel or magnetic rubber, and the padding layer is composed of polyurethane foam.

20. A backing layer comprising a first surface and a second surface, wherein each of the first surface and the second surface of the backing layer is defined by a first width and a first length, A padding layer comprising a compressible foam material, comprising a first surface defined by a second width in a first dimension and a second length in a second dimension, a second surface opposite to the first surface, a first side and a second side, wherein the first side terminates the first surface and the second surface at a first end, and the second side terminates the first surface and the second surface at a second end, and the padding layer is provided with a first recessed groove with an outlet on the first side and a second recessed groove with an outlet on the second side, and the second length of the padding layer is the backing The padding layer is longer than the first length of the backing layer, the padding layer is compressible and compressed and bonded to the backing layer, the padding layer is compressed along the second dimension to match the first length of the backing layer, the first surface of the padding layer is bonded to the first surface of the backing layer, the length measured along the first surface of the padding layer bonded to the first surface of the backing layer is the same as the first length, and the length measured along the second surface of the padding layer is longer than the first length, the padding layer and A fastener comprising: a tab fixedly attached to at least one of the backing layer or the padding layer in the first recessed groove; and a hook fixedly attached to at least one of the backing layer or the padding layer in the second recessed groove; A drive member equipped with the following features.

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