Ribbing roller and die-cutting machine

Abstract

The utility model relates to the technical field of battery tab processing, in particular to a ribbing roller and a die-cutting machine, which comprise a roller body and a ribbing structure, the roller body comprises a rolling surface; the rib pressing structures protrude out of the rolling face in the radial direction of the roller body, the multiple rib pressing structures are evenly distributed in the circumferential direction of the rolling face, and any rib pressing structure at least comprises a first rib part and a second rib part which are arranged at an included angle and connected; according to the ribbing roller provided by the utility model, the surface of the tab has reinforcing rib structures facing different directions in a rolling manner, so that the supporting property and the bending resistance of the tab in different directions are improved, and the problems of collapse, upwarp and folding of the tab are avoided or reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery tab processing, in particular to a ribbing roller and a die-cutting machine. Background Art

[0002] A battery tab is a metal conductor in a lithium-ion battery, which is used to lead out current from the positive and negative electrodes of the battery to realize the charging and discharging process; the battery tab is usually a thin metal conductor. With the continuous progress of lithium-ion battery technology, the requirement for energy density is increasing day by day. In order to achieve lower weight and higher volume energy density, the thinning of the base material has become a key technical approach. Currently, the commonly used foil thickness for the raw material of battery tabs is 6um; thinner copper foils, such as 4.5um copper foil, are also applied to the production of battery tabs.

[0003] When using the above-mentioned thinner copper foil material, in processes such as die-cutting and laminating, the tabs are prone to problems such as sagging, warping, and folding, resulting in an increase in the scrap rate of the electrode sheets; especially in the laminating process, in order to ensure effective welded connection with the cover plate metal parts, the designed height of the tabs usually exceeds 25mm. This makes the existing strip-shaped or dot-shaped reinforcing rib structures on the copper foil insufficient to provide sufficient support. When the strength of the tabs is insufficient, short-circuit accidents may occur due to the folding of the tabs, thus posing a safety hazard; therefore, there is an urgent need for a new type of lithium battery tab processing device to improve the structural strength of lithium battery tabs. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a ribbing roller and a die-cutting machine, which make the surface of the tab have reinforcing rib structures with different orientations through the rolling method, so as to improve the supportability and bending resistance of the tab in different directions, and avoid or reduce the problems of sagging, warping, and folding of the tab.

[0005] To achieve the above purpose and other related purposes, the present utility model provides a ribbing roller, including:

[0006] A roller body, including a rolling surface;

[0007] A ribbing structure, protruding from the rolling surface in the radial direction of the roller body, and a plurality of them are evenly distributed in the circumferential direction of the rolling surface, and any one of the ribbing structures at least includes a first rib portion and a second rib portion which are arranged at an angle and connected.

[0008] In an embodiment of the present utility model, along the axial direction or the circumferential direction of the rolling surface, two adjacent ribbing structures are connected as a whole and arranged in a continuous array.

[0009] In an embodiment of the present utility model, the ribbing structure has at least one bending portion.

[0010] In an embodiment of the present utility model, it further includes an annular rib, and the annular rib is arranged at both ends in the axial direction of the rolling surface.

[0011] In an embodiment of the present utility model, any one of the rib pressing structures at least includes a first rib portion and a second rib portion, and the included angle between the first rib portion and the second rib portion after being unfolded on a plane is between 30° and 60°.

[0012] In an embodiment of the present utility model, the width of the first rib portion and / or the second rib portion is between 0.5 mm and 1.5 mm.

[0013] In an embodiment of the present utility model, at least two groups of the rib pressing structures are arranged along the axial direction of the roller body, and the two groups of the rib pressing structures are arranged in alignment.

[0014] In an embodiment of the present utility model, along the axial direction of the roller body, at least one group of the rib pressing structures extends between the first rib portion and the second rib portion of another group of the rib pressing structures.

[0015] In an embodiment of the present utility model, the roller body includes a shaft hole arranged at the center of the roller body, and a pressure shaft is arranged in the shaft hole, and the pressure shaft is rotationally connected with the shaft hole through a bearing.

[0016] The present utility model provides a die-cutting machine, including the rib pressing roller described above.

[0017] In summary, for the rib pressing roller provided by the present utility model, by arranging a plurality of rib pressing structures evenly distributed along the circumferential direction on the rolling surface of the rib pressing roller, and making the rib pressing structure at least include a first rib portion and a second rib portion arranged at an included angle and intersecting and connecting, so that there are at least two different extending directions of the rib pressing structure on the rolling surface, and further enabling the rib pressing roller to press reinforcing ribs with different directions on the tab material, which helps the tab material to have good support and bending resistance in different directions, improves the traditional rib pressing roller that can only press dot-shaped reinforcing ribs or strip-shaped reinforcing ribs with insufficient support on the tab material, and further improves the problems of easy collapse, warping and folding existing in the traditional tabs with dot-shaped reinforcing ribs or strip-shaped reinforcing ribs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0019] Figure 1 Schematic diagram of the overall structure of the bead rolling roller in an alternative embodiment of the present utility model;

[0020] Figure 2 Schematic diagram of a partial structure of the roller pressed surface in an alternative embodiment of the present utility model;

[0021] Figure 3 Structural diagram of another partial structure of the roller pressed surface in an alternative embodiment of the present utility model;

[0022] Figure 4 Cross-sectional view of the structure of the bead rolling roller in an alternative embodiment of the present utility model;

[0023] Figure 5 Schematic diagram of the structure after unfolding a partial bead structure on a plane in an alternative embodiment of the present utility model;

[0024] Figure 6 Cross-sectional view of the structure in which the bead rolling roller is connected to the pressure shaft through a bearing in an alternative embodiment of the present utility model;

[0025] Figure 7 Schematic diagram of the structure of the pressure shaft in an alternative embodiment of the present utility model;

[0026] Element reference numeral description: roller body 1, roller pressed surface 11, bead structure 12, bent portion 121, first bead portion 122, second bead portion 123, annular bead 13, shaft hole 14, pressure shaft 2, mounting hole 21, bearing 3, axial direction Z, circumferential direction M, width direction X, length direction Y. Detailed implementation manners

[0027] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. It should also be understood that the terms used in the embodiments of the present utility model are for the purpose of describing specific specific implementation manners, rather than for limiting the protection scope of the present utility model. The test methods without specific conditions noted in the following embodiments are usually in accordance with conventional conditions or in accordance with the conditions recommended by each manufacturer.

[0028] Please refer to Figures 1 to 7It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the conditions for the implementation of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear description and are not used to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present utility model can be implemented.

[0029] When the embodiments give numerical ranges, it should be understood that unless otherwise stated in the present utility model, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present utility model, based on the understanding of those skilled in the art of the prior art and the description of the present utility model, any method, device, and material similar or equivalent to the prior art described in the embodiments of the present utility model can also be used to implement the present utility model.

[0030] Among them, in the following discussion, when the bead roller presses the tab material, the axial direction Z of the bead roller corresponds to the transverse direction of the tab material, and the circumferential direction M of the bead roller corresponds to the longitudinal direction of the tab material.

[0031] Please refer to Figure 1 , the present utility model provides a bead roller for pressing tab material, and the bead roller includes a roller body 1 and a bead structure 12;

[0032] The roller body 1 is cylindrical or sleeve-shaped, and its function is to provide a stable and uniform pressing force. The roller body 1 includes a roller pressing surface 11, and the roller pressing surface 11 is the circumferential surface of the roller body 1 for directly contacting and pressing the battery tab material.

[0033] The ribbing structure 12 protrudes from the rolling surface 11 in the radial direction of the roller body 1, and a plurality of them are evenly distributed in the circumferential direction M of the rolling surface 11. The function of the ribbing structure 12 is to form ribs on the tab material to improve its structural strength and prevent problems such as collapse, warping, and folding. At the same time, since they are evenly distributed in the circumferential direction M, it can ensure that the entire tab material can be evenly strengthened. It should be understood that when a plurality of ribbing structures 12 evenly arranged in the circumferential direction M of the rolling surface 11 are connected together to form a continuous ribbing pattern, the ribbing structure 12 in this case is a pattern unit of the continuous ribbing pattern, and the shape of each pattern unit can be "V" shape, "W" shape, "M" shape or other shapes that meet the requirements.

[0034] Further, the ribbing structure 12 at least includes a first rib portion 122 and a second rib portion 123 that are arranged at an angle and connected. It should be understood that when the first rib portion 122 and the second rib portion 123 are only arranged at an angle, there may be a situation where they do not necessarily intersect, and when the first rib portion 122 and the second rib portion 123 only intersect, there may be a situation where they are not arranged at an angle. It should be noted that the angle setting here does not include a flat angle of 180°. Therefore, the first rib portion 122 and the second rib portion 123 in this case are both arranged at an angle and there is an intersecting part due to the connection of the first rib portion 122 and the second rib portion 123. For example, the ribbing structure 12 is in the shape of "V", "W", "M" or other shapes that meet the requirements.

[0035] Further, when the ribbing structure 12 is discontinuously arranged in the axial direction Z or the circumferential direction M, as Figure 2 shown in the partial structural schematic diagram of the rolling surface 11, along the axial direction Z, at least two projections of the ribbing structure 12 in the circumferential direction M partially overlap;

[0036] Or, as Figure 3 shown in the partial structural schematic diagram of the rolling surface 11, in the circumferential direction M, at least two projections of the ribbing structure 12 in the axial direction Z partially overlap.

[0037] It should be understood that the ribbing structure 12 can be continuously arranged or discontinuously arranged in the circumferential direction M of the rolling surface 11. As Figure 1 shown, the ribbing structure 12 is continuously arranged in the circumferential direction M of the rolling surface 11.

[0038] As Figure 2As shown, when the ribbing structure 12 is discontinuously arranged in the circumferential direction M, at least two sets of ribbing structures 12 should be arranged in the axial direction Z of the rolling surface 11, and the two sets of ribbing structures 12 are staggeredly arranged in the circumferential direction M of the rolling surface 11, that is, the projections of the two sets of ribbing structures 12 in the axial direction Z of the rolling surface 11 have an overlapping part, so that the reinforcing ribs pressed by the ribbing roller on the tab material can ensure that the tab material can maintain good continuous support in the longitudinal direction and avoid the occurrence of a fault in the support effect. When Figure 2 is regarded as the pressed tab material, this longitudinal direction is the M direction.

[0039] When the ribbing structure 12 can be continuously arranged or discontinuously arranged in the axial direction Z of the rolling surface 11, as Figure 3 shown, when the ribbing structure 12 is discontinuously arranged in the axial direction Z, at least two sets of ribbing structures 12 should be arranged in the circumferential direction M of the rolling surface 11, and the two sets of ribbing structures 12 are staggeredly arranged in the axial direction Z of the rolling surface 11, that is, the projections of the two sets of ribbing structures 12 in the circumferential direction M of the rolling surface 11 have an overlapping part, so that the reinforcing ribs pressed by the ribbing roller on the tab material can ensure that the tab material can maintain good continuous support in the transverse direction and avoid the occurrence of a fault in the support effect. When Figure 3 is regarded as the tab material, this transverse direction is the Z direction, thereby avoiding or reducing short-circuit accidents caused by insufficient tab strength and improving the safety of the battery.

[0040] In this case, by designing the ribbing roller, it aims to solve the problems such as collapse, warping, and folding that are prone to occur in the processes of die-cutting and laminating of lithium battery tabs, as well as improve the support on the existing lithium battery tabs and solve the technical problems of the reduction of the yield rate and production efficiency of the production line for producing tabs; in this case, through the ribbing roller, reinforcing ribs can be formed on the tab material between the transverse and longitudinal directions, so that the support performance of the tab in the transverse and longitudinal directions is improved, and the overall bending resistance performance is enhanced, thereby improving the safety and stability of the battery.

[0041] Please refer to Figure 1 , as an optional embodiment of this case, the surface of the ribbing structure 12 can have a rounded corner to avoid the sharpness of the local structure from affecting the pressing quality of the tab.

[0042] Please refer to Figure 1 , as an optional embodiment of this case, along the circumferential direction M of the rolling surface 11, two adjacent ribbing structures 12 are connected as a whole and are arranged in a continuous array in the circumferential direction M of the rolling surface 11. For example, when the ribbing structure 12 is in a "V" shape, as Figure 1As shown, two adjacent rib structures 12 in the circumferential direction M of the rolling surface 11 are integrally connected, and taking these two rib structures 12 as a rib unit, these rib units are arranged in an array in the circumferential direction M of the rolling surface 11, and multiple rib units of this array are continuously arranged, that is, multiple rib units of this array are connected to each other. Among them, two adjacent rib structures 12 in the circumferential direction M of the rolling surface 11 being integrally connected can be that the ends of these two adjacent rib structures 12 in the circumferential direction M of the rolling surface 11 are integrally connected, or among two adjacent rib structures 12, the first rib part 122 of one rib structure 12 intersects with the second rib part 123 of the other rib structure 12. In this case, by connecting adjacent rib structures 12 into one body, a continuous reinforcing rib network is formed. Such a structure can more effectively disperse and transmit pressure. During the processing, when the rib rolling roller presses the battery tab material, the continuous rib structure 12 can provide a more uniform and stable supporting force, reduce the deformation and displacement of the material, and improve the overall processing accuracy. Similarly, it can also be that along the axial direction Z of the rolling surface 11, two adjacent rib structures 12 are integrally connected and arranged in a continuous array in the axial direction Z of the rolling surface 11. Whether the rib structure 12 is specifically arranged in the circumferential direction M or the axial direction Z depends on the main stress direction of the processed tab material during use to decide.

[0043] Please refer to Figure 1 , as an optional embodiment of this case, the rib structure 12 has at least one bending part 121, and can also have multiple bending parts 121. This bending part 121 is substantially the intersection of the first rib part 122 and the second rib part 123. For example, when the rib structure 12 is in a "V" shape, it has one bending part 121, and when the rib structure 12 is in a "W" or "M" shape, it has three bending parts 121, so that the tab material can be pressed by the rib rolling roller to produce a reinforcing rib similar to the structure of this bending part 121. Since the reinforcing rib on the tab material is in a bent shape, when the tab material is stressed, it can better disperse and absorb forces in different directions, effectively enhancing the overall strength and bending resistance of the tab material, such as preventing the tab from collapsing, warping and folding, and ensuring the structural integrity and stability of the battery.

[0044] Please refer to Figure 1, as an alternative embodiment of this case, the ribbed roller further includes an annular rib 13, and the annular rib 13 is arranged at both ends of the roller pressing surface 11 in the axial direction Z. The annular rib 13 is located at both ends of the roller pressing surface 11 in the axial direction Z and can provide additional edge support; by arranging the annular rib 13 at both ends of the roller pressing surface 11 of the ribbed roller, the edge of the pressed tab has a strip-shaped rib. During the processing of the battery tab, the edge part is most likely to be deformed or damaged, such as the warping problem. By arranging the annular rib 13 at both ends of the roller pressing surface 11 of the ribbed roller, the edge of the pressed tab has a strip-shaped rib, and this strip-shaped rib can ensure that the edge part of the tab material can also be fully strengthened and protected.

[0045] Please refer to Figure 1 and 5 , as an alternative embodiment of this case, the included angle between the first rib portion 122 and the second rib portion 123 on the roller pressing surface 11 is a, 30° ≤ a ≤ 60°. For example, the first rib portion 122 and the second rib portion 123 are arranged on the curved roller pressing surface 11, and the included angle between the first rib portion 122 and the second rib portion 123 is 30° or 35° or 40° or 45° or 60°. At one end of the tab, due to the chamfer at the edge area, the support force at this end of the tab is small, and the longitudinal or transverse support effect is not good. In the subsequent lamination process, the tab is prone to folding problems due to the warping of the tab end. Therefore, in this case, by optimizing the included angle between the first rib portion 122 and the second rib portion 123, a reinforcing rib structure that supports each other can be formed on the battery tab material, which helps to balance the support force between the reinforcing ribs on the tab material, avoid insufficient support caused by too small an included angle or difficulty in effectively dispersing stress due to too large an included angle, and this angle range can more effectively resist external forces from different directions, such as pressure, tension and bending force, which is beneficial to increasing the rigidity and stability of the structure, reducing the deformation generated due to external forces during the use of the battery, and thus improving the durability and reliability of the battery tab.

[0046] Preferably, the included angle between the first rib portion 122 and the second rib portion 123 is between 30° and 45°.

[0047] Please refer to Figure 1 and 5 , as an alternative embodiment of this case, along the circumferential direction M of the roller body 1, the distance d between two adjacent ribbing structures 12 is between 5 mm ≤ d ≤ 10 mm. For example, d can be 5 mm or 6 mm or 8 mm or 10 mm, so that the reinforcing ribs on the pressed tab material are denser, which is beneficial to improving the strength of the tab material.

[0048] Please refer to Figure 1 and 5 , as an alternative embodiment of this case, the first rib portion 122 and the second rib portion 123 have equal lengths.

[0049] Please refer to Figure 1 and 5 As an alternative embodiment of this case, the width of the first rib portion 122 and / or the second rib portion 123 is b, where 0.4 mm ≤ b ≤ 2 mm, and the width direction X is perpendicular to the length direction Y of the first rib portion 122 or the second rib portion 123, which can ensure that each ribbing structure 12 has sufficient material to withstand the stress generated during the processing, while maintaining sufficient structural strength and reducing damage or deformation caused by being too narrow. Among them, Figure 5 The Y direction and X direction in the example are only the length direction and width direction of the first rib portion 122 in this figure.

[0050] Furthermore, the width of the first rib portion 122 and / or the second rib portion 123 is 0.4 mm or 0.5 mm or 1 mm or 1.5 mm or 2 mm.

[0051] Please refer to Figure 1 and 5 As an alternative embodiment of this case, at least two sets of the ribbing structures 12 are provided along the axial direction Z of the roller body 1, and the two sets of the ribbing structures 12 are arranged in alignment, so that the ribs on the tab material are arranged neatly and regularly, and the mechanical properties are more uniform. The distance between the two aligned ribbing structures along the axial direction Z of the roller body 1 is c, where 5 mm ≤ c ≤ 9 mm. Furthermore, c is 5 mm or 6 mm or 7 mm or 8 mm or 9 mm. The appropriate distance design helps to maintain the integrity of the battery tab material during the pressing process. The distance of 5 mm to 9 mm is large enough to avoid damage or fatigue of the tab material caused by too dense ribbing, while ensuring that each ribbing structure 12 can be effectively formed without being interfered by adjacent ribbing structures 12.

[0052] Please refer to Figure 1 and 5, as an alternative embodiment of this case, along the axial direction Z of the roller body 1, there is at least one set of the ribbing structures 12 extending between the first rib portion 122 and the second rib portion 123 of another set of the ribbing structures 12. When the axial direction Z of the roller body 1 corresponds to the transverse direction of the tab material and the circumferential direction M of the roller body 1 corresponds to the longitudinal direction of the tab material, when the ribbing roller presses the tab material, a continuous reinforcing rib network can be formed in the transverse direction of the tab material. This continuity helps to improve the stability and strength when the tab material is used in the battery; when the ribbing structures 12 of the ribbing roller extend and intertwine with each other, the reinforcing ribs pressed on the tab material can better resist external forces from different directions, such as pressure, tension, and bending force, and form a more uniform stress distribution, providing advantages in terms of structural continuity, load-bearing capacity, mechanical property optimization, stress distribution improvement, and increased structural integrity for the processing of battery tabs, ensuring the high quality and high performance of the battery tabs.

[0053] Please refer to Figure 1 , 6 -7, as an alternative embodiment of this case, the roller body 1 includes a shaft hole 14 provided at the center of the roller body 1, and a pressure shaft 2 is provided in the shaft hole 14. The pressure shaft 2 is rotatably connected to the shaft hole 14 through a bearing 3; along the axial direction Z of the shaft hole 14, the inner diameters at both ends of the shaft hole 14 are larger than the inner diameter of the middle part of the shaft hole 14. The two ends of the shaft hole 14 are mainly used for installing the bearing 3. The inner wall of the shaft hole 14 is fixedly connected to the outer ring of the bearing 3, and the inner ring of the bearing 3 is connected to the shaft surface of the pressure shaft 2, so as to form a rotational connection between the roller body 1 and the pressure shaft 2. The pressure shaft 2 mainly applies pressure to the roller body 1 through the bearing 3, so that the ribbing roller can roll on the tab material and press out the reinforcing ribs.

[0054] Furthermore, mounting holes 21 are provided on the shaft surfaces at both ends of the pressure shaft 2. The mounting holes 21 are used to connect with the equipment applying pressure, so as to stably apply pressure and the driving force of movement to the ribbing roller through the pressure shaft 2.

[0055] The present utility model also provides a die-cutting machine, which is a device specifically used for cutting battery tab materials. It mainly includes a rewinding and unwinding structure, a tab cutting mechanism, a waste treatment system, a size and defect detection system, a dust removal system, a control system, and an operation interface, etc. The die-cutting machine includes the above-mentioned ribbing roller, so that the die-cutting machine is also within the protection scope of this case. The reinforcing ribs formed by the ribbing roller on the battery tab material increase the rigidity and strength of the material. The die-cutting machine adopts a ribbing roller with a ribbing structure 12, and the die-cutting machine can die-cut the battery tab material with higher precision. The existence of the ribbing structure 12 ensures the structural stability of the material during the processing, reduces the die-cutting size deviation, and thus improves the consistency and quality of the product.

[0056] In summary, the present utility model effectively overcomes some practical problems in the prior art, so it has high utilization value and practical significance.

[0057] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A rib pressing roller, characterized in that: include: The roller body includes a rolling surface; The rib structure protrudes from the rolling surface along the radial direction of the roller body, and is evenly distributed in the circumferential direction of the rolling surface. Any of the rib structures at least includes a first rib portion and a second rib portion that are arranged and connected at an angle.

2. The beading roller according to claim 1, characterized in that: Along the axial direction or the circumferential direction of the rolling surface, two adjacent rib structures are connected as a whole and arranged in a continuous array.

3. The embossing roller according to claim 1, characterized in that: The rib structure has at least one bending portion.

4. The beading roller according to claim 1, characterized in that: It also includes annular ribs, which are arranged at both ends of the rolling surface in the axial direction.

5. The embossing roller according to claim 1, characterized in that: The included angle between the first rib and the second rib on the rolling surface is between 30° and 60°.

6. The embossing roller according to claim 5, characterized in that: The width of the first rib and / or the second rib is between 0.5 mm and 1.5 mm.

7. The beading roller according to claim 5, characterized in that: At least two groups of the rib structures are arranged along the axial direction of the roller body, and the two groups of the rib structures are aligned.

8. The embossing roller according to claim 7, characterized in that: Along the axial direction of the roller body, there is at least one group of the rib structures extending between the first rib portion and the second rib portion of another group of the rib structures.

9. The beading roller according to claim 1, characterized in that: The roller body comprises an axial hole arranged at the center of the roller body, and a pressure shaft is arranged in the axial hole, and the pressure shaft is rotatably connected to the axial hole through a bearing.

10. A die-cutting machine, characterized in that: The invention comprises the embossing roller as described in any one of claims 1 to 9.

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