Die cutting roller set, manufacturing method and die cutting device

Abstract

The invention discloses a die cutting roller set, a manufacturing method and a die cutting device.The die cutting roller set mounting method comprises the steps that the first reference perimeter l2 of a die cutting roller is obtained according to the preset size l1 of a die cutting piece in the preset direction; obtaining a second reference perimeter of the reference circle of the first gear; then, a first gear with the numerical value closest to the second reference perimeter is selected from the database, a first gear parameter of the first gear is obtained, and a second gear parameter is obtained; then, a first actual perimeter and a second actual perimeter are obtained according to the first gear parameter and the second gear parameter, and a first gear, a second gear, a die cutting roller and a bottom roller are manufactured according to the first actual perimeter and the second actual perimeter respectively. Furthermore, in the manufacturing method of the die-cutting roller set, the die-cutting roller set is manufactured with the preset size of the die-cutting piece as the standard, so that m die-cutting pieces can be machined in the process that the die-cutting roller rotates by one circle, gaps between the die-cutting pieces can be smaller, and then the utilization rate of a film material is increased.

Description

Technical Field

[0001] The invention relates to the field of die-cutting technology, and in particular to a die-cutting roller group, a manufacturing method and a die-cutting device. Background Art

[0002] During the die-cutting process, a die-cutting roller group is required to die-cut on the film material to form a die-cut piece, and then the film material is arranged on the protective film at a preset distance.

[0003] In the related art, when the die-cutting roller group is die-cutting a film material, there is often a certain gap between two adjacent die-cut pieces, which correspondingly reduces the utilization rate of the film material. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art. The first aspect of the present invention provides a method for manufacturing a die-cutting roller set. The die-cutting roller set manufactured by the manufacturing method of the present invention can improve the utilization rate of film materials when die-cutting film materials. The second aspect of the present invention also provides a die-cutting roller set. The third aspect of the present invention also provides a die-cutting device.

[0005] According to a manufacturing method of a die-cutting roller set provided by an embodiment of the first aspect of the present invention, the die-cutting roller set comprises a die-cutting roller and a bottom roller, the die-cutting roller is provided with a first gear, and the bottom roller is provided with a second gear meshing with the first gear, and the manufacturing method comprises the following steps:

[0006] Obtaining a preset size l1 of a die-cut piece in a preset direction, wherein the die-cut piece is die-cut by a die-cutting roller group;

[0007] Obtain a first reference circumference l2 of the die-cutting roller according to the preset size l1, wherein the first reference circumference l2 and the preset size l1 satisfy: ml1 = l2, m is a positive integer;

[0008] Obtaining a second reference circumference of the pitch circle of the first gear according to the first reference circumference l2, wherein the second reference circumference is numerically identical to the first reference circumference;

[0009] Acquire a first gear parameter of the first gear from a database, wherein the first gear parameter is closest to the second reference circumference in the circumference data of the pitch circle;

[0010] Selecting a second gear parameter of the second gear according to the first gear parameter, wherein a modulus in the second gear parameter is numerically the same as a modulus in the first gear parameter;

[0011] Determine a first actual circumference of the die-cutting roller and a second actual circumference of the bottom roller according to the first gear parameter and the second gear parameter, wherein the circumference of the pitch circle in the first gear parameter is numerically the same as the first actual circumference, and the circumference of the pitch circle in the second gear parameter is numerically the same as the second actual circumference;

[0012] The first gear is manufactured according to the first gear parameters, the second gear is manufactured according to the second gear parameters, the die-cutting roller is manufactured according to the first actual circumference, the bottom roller is manufactured according to the second actual circumference, and the first gear, the second gear, the die-cutting roller and the bottom roller are assembled to form a die-cutting roller group.

[0013] The method for installing a die-cutting roller group on a die-cutting device of the present invention has at least the following beneficial effects: in the method for installing a die-cutting roller group of the present invention, firstly, a preset dimension l1 of the die-cutting piece in a preset direction is obtained, wherein the die-cutting piece is die-cut by the die-cutting roller group; then, a first reference circumference l2 of the die-cutting roller is obtained according to the preset dimension l1, wherein the first reference circumference l2 and the preset dimension l1 satisfy: ml1=l2, m is a positive integer; then, a second reference circumference of the pitch circle of the first gear is obtained according to the first reference circumference l2, wherein the second reference circumference is numerically identical to the first reference circumference; then, a first gear parameter of the first gear is obtained from a database, wherein the first gear parameter is closest to the second gear parameter in terms of the circumference data of the pitch circle. Reference circumference; then, select the second gear parameter of the second gear according to the first gear parameter, wherein the modulus in the second gear parameter is numerically the same as the modulus in the first gear parameter; then, determine the first actual circumference of the die-cutting roller and the second actual circumference of the bottom roller according to the first gear parameter and the second gear parameter, wherein the circumference of the pitch circle in the first gear parameter is numerically the same as the first actual circumference, and the circumference of the pitch circle in the second gear parameter is numerically the same as the second actual circumference; then, manufacture the first gear according to the first gear parameter, manufacture the second gear according to the second gear parameter, manufacture the die-cutting roller according to the first actual circumference, manufacture the bottom roller according to the second actual circumference, and assemble the first gear, the second gear, the die-cutting roller and the bottom roller to form a die-cutting roller group. Furthermore, in the manufacturing method of the die-cutting roller group of the present application, the die-cutting roller group is manufactured based on the preset size of the die-cutting piece, so that m die-cutting pieces can be processed during one rotation of the die-cutting roller, and the gap between each die-cutting piece can be smaller, thereby improving the utilization rate of the film material.

[0014] According to the method for manufacturing a die-cutting roller set described in the embodiment of the first aspect of the present invention, manufacturing a die-cutting roller according to a first actual circumference comprises the following steps:

[0015] Manufacturing a die-cutting roller semi-finished product according to the first actual circumference, wherein the value of the circumference of the die-cutting roller semi-finished product is the same as the value of the first actual circumference;

[0016] m groups of first blade groups and m second blades are processed on a semi-finished die-cutting roller to form a die-cutting roller, wherein the first blade groups and the second blades are alternately distributed along the circumference of the die-cutting roller, each group of first blade groups includes a plurality of first blades, and each first blade of the same group of first blade groups and each adjacent second blade are used together for die-cutting to form a die-cutting piece.

[0017] The die-cutting roller group provided in the embodiment of the second aspect of the present invention is manufactured by adopting the manufacturing method of the die-cutting roller group provided in the embodiment of the first aspect of the present invention; the die-cutting roller group includes a die-cutting roller and a bottom roller, the die-cutting roller is provided with a first gear, the bottom roller is provided with a second gear meshing with the first gear, and the specifications of the first gear and the second gear are the same.

[0018] According to the die-cutting roller group described in the embodiment of the second aspect of the present invention, the die-cutting roller and the first gear are arranged in a homogeneous and integral manner.

[0019] According to the die-cutting roller set described in the embodiment of the second aspect of the present invention, the bottom roller and the second gear are arranged in a homogeneous and integral manner.

[0020] According to the die-cutting roller group described in the embodiment of the second aspect of the present invention, the roller surface of the die-cutting roller is provided with m groups of first blade groups and m second blades, the first blade groups and the second blades are alternately distributed along the circumference of the die-cutting roller, each group of first blade groups includes multiple first blades, and each first blade of the same group of first blade groups and each adjacent second blade are used together for die-cutting to form a die-cutting piece.

[0021] The die-cutting device provided in accordance with the embodiment of the third aspect of the present invention comprises the die-cutting roller set provided in accordance with the embodiment of the second aspect of the present invention.

[0022] According to the die-cutting device described in the embodiment of the third aspect of the present invention, it also includes a power roller and a transfer module. The power roller is transmission-connected to the bottom roller and is used to drive the bottom roller to rotate. The transfer module is arranged on one side of the die-cutting roller group. The transfer module is used to transfer the die-cut pieces formed by die-cutting by the die-cutting roller group to the protective film, and there is a preset interval d between any two adjacent die-cut pieces on the protective film; the transfer module includes a driving roller for driving the protective film to move, the driving roller is transmission-connected to the power roller, and the rotation speed of the driving roller is the same as the rotation speed of the power roller.

[0023] According to the die-cutting device described in the embodiment of the third aspect of the present invention, a third gear is installed on the bottom roller, a fourth gear is installed on the power roller, the third gear is meshed with the fourth gear, and the gear ratio n between the third gear and the fourth gear satisfies: n=(d+l1) / l1.

[0024] According to the die-cutting device described in the embodiment of the third aspect of the present invention, the modules of the third gear and the fourth gear are both 1.0106.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0027] Figure 1 A flow chart of a method for manufacturing a die-cutting roller assembly according to an embodiment of the present invention;

[0028] Figure 2 A flow chart of manufacturing a die-cutting roller according to a first actual circumference according to an embodiment of the present invention;

[0029] Figure 3 The figure is a schematic structural diagram of a die-cutting roller group according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] Die cutting roller 100; first gear 110;

[0032] Bottom roller 200; second gear 210; third gear 220;

[0033] Power roller 300 ; fourth gear 310 . DETAILED DESCRIPTION

[0034] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0038] Reference below Figure 1 and Figure 2 The manufacturing method of the die-cutting roller set in the first embodiment of the present invention is described in detail.

[0039] refer to Figure 1 According to the manufacturing method of the die-cutting roller set of the embodiment of the present invention, it includes but is not limited to the following steps:

[0040] Step S100, obtaining a preset size l1 of a die-cut piece in a preset direction, wherein the die-cut piece is die-cut by a die-cutting roller group;

[0041] It should be noted that when the die-cutting roller group die-cuts on the film material to form a die-cut piece, the film material is extended along a preset direction.

[0042] Step S200, obtaining a first reference circumference l2 of the die-cutting roller according to a preset size l1, wherein the first reference circumference l2 and the preset size l1 satisfy: ml1 = l2, m is a positive integer;

[0043] It can be understood that when a die-cutting roller 100 having a first reference circumference is used to die-cut the film material, since the first reference circumference l2 and the preset size l1 satisfy: ml1=l2, m is a positive integer, the die-cutting roller 100 can die-cut m die-cut pieces on the film material for each rotation, and the gap between each die-cut piece formed on the film material can be exactly zero.

[0044] Step S300, obtaining a second reference circumference of the pitch circle of the first gear 110 according to the first reference circumference l2, wherein the second reference circumference is numerically identical to the first reference circumference;

[0045] It should be noted that the first gear 110 is installed on the die-cutting roller 100, and the second gear 210 is installed on the bottom roller 200. The first gear 110 and the second gear 210 are meshed with each other, and the first gear 110 and the second gear 210 have the same specifications, so that the die-cutting roller 100 and the bottom roller 200 can rotate synchronously at the same speed. Accordingly, the second reference circumference of the pitch circle of the first gear 110 is numerically the same as the first reference circumference of the die-cutting roller 100.

[0046] Step S400, obtaining a first gear parameter of the first gear 110 from a database, wherein the first gear parameter is closest to the second reference circumference in the circumference data of the pitch circle;

[0047] Step S500, selecting a second gear parameter of the second gear 210 according to the first gear parameter, wherein the modulus in the second gear parameter is the same as the modulus in the first gear parameter in terms of value;

[0048] Step S600, determining a first actual circumference of the die-cutting roller 100 and a second actual circumference of the bottom roller 200 according to the first gear parameter and the second gear parameter, wherein the circumference of the pitch circle in the first gear parameter is numerically the same as the first actual circumference, and the circumference of the pitch circle in the second gear parameter is numerically the same as the second actual circumference;

[0049] It should be noted that if the first gear 110 is manufactured directly according to the second reference circumference, it is difficult to find a standard gear that meets the standard. In this case, if a gear of a new specification is manufactured directly according to the second reference circumference, it not only increases the difficulty of obtaining the first gear 110 and the second gear 210, but also increases the manufacturing cost of the die-cutting roller group.

[0050] In this step, the first gear parameters of the first gear 110 are first obtained from the database, and then the second gear parameters of the second gear 210 are selected according to the first gear parameters, and the first actual circumference of the die-cutting roller 100 and the second actual circumference of the bottom roller 200 are determined according to the first gear parameters and the second gear parameters; thereby, the first gear 110 and the second gear 210 can be selected from gears of existing specifications, which reduces the difficulty of obtaining the first gear 110 and the second gear 210, and, because the first actual circumference is numerically close to the first reference circumference, after the die-cutting roller 100 and the bottom roller 200 are respectively manufactured according to the first actual circumference and the second actual circumference, even if there is still a certain gap between the die-cutting pieces formed by the die-cutting roller 100 die-cutting the film material, the gap between the die-cutting pieces can be smaller and can be ignored.

[0051] Step S700, manufacture the first gear 110 according to the first gear parameters, manufacture the second gear 210 according to the second gear parameters, manufacture the die-cutting roller 100 according to the first actual circumference, manufacture the bottom roller 200 according to the second actual circumference, and assemble the first gear 110, the second gear 210, the die-cutting roller 100 and the bottom roller 200 to form a die-cutting roller group.

[0052] It can be understood that in the installation method of the die-cutting roller group of the present invention, the preset size l1 of the die-cutting piece in the preset direction is first obtained, wherein the die-cutting piece is die-cut by the die-cutting roller group; then, the first reference circumference l2 of the die-cutting roller 100 is obtained according to the preset size l1, wherein the first reference circumference l2 and the preset size l1 satisfy: ml1=l2, m is a positive integer; then, the second reference circumference of the pitch circle of the first gear is obtained according to the first reference circumference l2, wherein the second reference circumference is numerically the same as the first reference circumference; then, the first gear parameter of the first gear 110 is obtained from the database, wherein the first gear parameter is closest to the second reference circumference in the circumference data of the pitch circle; then, the second gear 21 is selected according to the first gear parameter 0, wherein the modulus in the second gear parameter is numerically the same as the modulus in the first gear parameter; then, the first actual circumference of the die-cutting roller 100 and the second actual circumference of the bottom roller are determined according to the first gear parameter and the second gear parameter, wherein the circumference of the pitch circle in the first gear parameter is numerically the same as the first actual circumference, and the circumference of the pitch circle in the second gear parameter is numerically the same as the second actual circumference; then, the first gear 110 is manufactured according to the first gear parameter, the second gear 210 is manufactured according to the second gear parameter, the die-cutting roller 100 is manufactured according to the first actual circumference, the bottom roller 200 is manufactured according to the second actual circumference, and the first gear 110, the second gear 210, the die-cutting roller 100 and the bottom roller 200 are assembled to form a die-cutting roller set. Furthermore, in the manufacturing method of the die-cutting roller set of the present application, the die-cutting roller set is manufactured based on the preset size of the die-cutting piece, so that m die-cutting pieces can be processed during one rotation of the die-cutting roller, and the gap between each die-cutting piece can be smaller, thereby improving the utilization rate of the film material.

[0053] In some embodiments of the present invention, reference Figure 2 In step S700, the following steps are also included but not limited to:

[0054] Step S710, manufacturing a semi-finished die-cutting roller according to the first actual circumference, wherein the value of the circumference of the semi-finished die-cutting roller is the same as the value of the first actual circumference;

[0055] Step S720, processing m groups of first blade groups and m second blades on the semi-finished die-cutting roller to form a die-cutting roller 100, wherein the first blade groups and the second blades are alternately distributed along the circumference of the die-cutting roller 100, each group of first blade groups includes multiple first blades, and each first blade of the same group of first blade groups and each adjacent second blade are used together for die-cutting to form a die-cutting part.

[0056] It can be understood that by setting a second blade, and each first blade of the same group of first blade groups and each adjacent second blade are used together to die-cut to form a die-cut piece, so that when m is a positive integer greater than one, the same second blade can die-cut the junction of two adjacent die-cut pieces, so that the number of blades on the die-cutting roller 100 can be set to be smaller, so as to reduce the probability of chipping on the die-cutting roller 100.

[0057] refer to Figure 3 The die-cutting roller group provided according to the embodiment of the second aspect of the present invention is manufactured by adopting the manufacturing method of the die-cutting roller group provided by the embodiment of the first aspect of the present invention; the die-cutting roller group includes a die-cutting roller 100 and a bottom roller 200, the die-cutting roller 100 is provided with a first gear 110, the bottom roller 200 is provided with a second gear 210 meshing with the first gear 110, and the specifications of the first gear 110 and the second gear 210 are the same.

[0058] It can be understood that, since the first gear 110 and the second gear 210 are meshed with each other and the modules of the first gear 110 and the second gear 210 are the same, the die-cutting roller 100 and the bottom roller 200 can rotate synchronously with the same rotation.

[0059] In a further embodiment of the present invention, the die-cutting roller 100 and the first gear 110 are integrally formed homogeneously.

[0060] In a further embodiment of the present invention, the bottom roller 200 and the second gear 210 are integrally formed homogeneously.

[0061] In some embodiments of the present invention, the roller surface of the die-cutting roller 100 is provided with m groups of first blade groups and m second blades, and the first blade groups and the second blades are alternately distributed along the circumference of the die-cutting roller 100. Each group of first blade groups includes multiple first blades, and each first blade of the same group of first blade groups and each adjacent second blade are used together for die-cutting to form a die-cut part.

[0062] It can be understood that by setting a second blade, and each first blade of the same group of first blade groups and each adjacent second blade are used together to die-cut to form a die-cut piece, so that when m is a positive integer greater than one, the same second blade can die-cut the junction of two adjacent die-cut pieces, so that the number of blades on the die-cutting roller 100 can be set to be smaller, so as to reduce the probability of chipping on the die-cutting roller 100.

[0063] The die-cutting device provided in accordance with the embodiment of the third aspect of the present invention comprises the die-cutting roller set provided in accordance with the embodiment of the second aspect of the present invention.

[0064] In some embodiments of the present invention, the die-cutting device also includes a power roller 300 and a transfer module. The power roller 300 is transmission-connected to the bottom roller 200 and is used to drive the bottom roller 200 to rotate. The transfer module is arranged on one side of the die-cutting roller group. The transfer module is used to transfer the die-cut pieces formed by the die-cutting roller group to the protective film, and there is a preset interval d between any two adjacent die-cut pieces on the protective film; the transfer module includes a driving roller for driving the protective film to move, the driving roller is transmission-connected to the power roller 300, and the rotation speed of the driving roller is the same as the rotation speed of the power roller 300.

[0065] It should be noted that after the die-cutting roller group die-cuts the film material, the gap between any two adjacent die-cut pieces is small. When the die-cut pieces are subsequently processed, the processing equipment is prone to damage the adjacent die-cut pieces. Therefore, after the die-cutting roller group die-cuts the film material to form die-cut pieces, a transfer module is required to transfer the die-cut pieces to the protective film, and a preset gap is required between any two adjacent die-cut pieces on the protective film.

[0066] It can be understood that in the die-cutting device of the present invention, by setting up a transfer module, the transfer module can transfer the die-cut pieces formed by the die-cutting roller group to the protective film, and any two adjacent die-cut pieces on the protective film can be spaced by a preset interval d.

[0067] In a further embodiment of the present invention, reference Figure 3 A third gear 220 is installed on the bottom roller 200, and a fourth gear 310 is installed on the power roller 300. The third gear 220 is meshed with the fourth gear 310, and the gear ratio n between the third gear 220 and the fourth gear 310 satisfies: n=(d+l1) / l1.

[0068] It should be noted that the rotation speed of the driving roller of the transfer module is the same as the rotation speed of the power roller 300. By setting the third gear 220 and the fourth gear 310 between the bottom roller 200 and the power roller 300, and the gear number ratio n of the third gear 220 and the fourth gear 310 satisfies: n=(d+l1) / l1, the rotation speed ratio between the bottom roller 200 and the driving roller can be (d+l1) / l1, and then, after the die-cut pieces formed by the die-cutting roller group are transferred to the protective film, any two adjacent die-cut pieces can be exactly separated by a preset interval d.

[0069] In some embodiments of the present invention, the modules of the third gear 220 and the fourth gear 310 are both 1.0106.

[0070] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for manufacturing a die-cutting roller set, characterized in that: The die-cutting roller set comprises a die-cutting roller and a bottom roller, the die-cutting roller is provided with a first gear, and the bottom roller is provided with a second gear meshing with the first gear. The manufacturing method comprises the following steps: Obtaining a preset size l1 of a die-cut piece in a preset direction, wherein the die-cut piece is die-cut by the die-cutting roller group; Obtaining a first reference circumference l2 of the die-cutting roller according to the preset size l1, wherein the first reference circumference l2 and the preset size l1 satisfy the following: ml1=l2, and m is a positive integer; Obtaining a second reference circumference of the pitch circle of the first gear according to the first reference circumference l2, wherein the second reference circumference is numerically identical to the first reference circumference; Acquire a first gear parameter of the first gear from a database, wherein the first gear parameter is closest to the second reference circumference in terms of circumference data of a pitch circle; Selecting a second gear parameter of a second gear according to the first gear parameter, wherein a modulus in the second gear parameter is numerically the same as a modulus in the first gear parameter; Determine a first actual circumference of the die-cutting roller and a second actual circumference of the bottom roller according to a first gear parameter and a second gear parameter, wherein the circumference of the pitch circle in the first gear parameter is numerically the same as the first actual circumference, and the circumference of the pitch circle in the second gear parameter is numerically the same as the second actual circumference; The first gear is manufactured according to the first gear parameters, the second gear is manufactured according to the second gear parameters, the die-cutting roller is manufactured according to the first actual circumference, the bottom roller is manufactured according to the second actual circumference, and the first gear, the second gear, the die-cutting roller and the bottom roller are assembled to form the die-cutting roller group.

2. The method for manufacturing a die-cutting roller set according to claim 1, characterized in that: The method of manufacturing the die-cutting roller according to the first actual circumference comprises the following steps: Manufacturing a semi-finished die-cutting roller according to the first actual circumference, wherein the value of the circumference of the semi-finished die-cutting roller is the same as the value of the first actual circumference; m groups of first blade groups and m second blades are processed on the semi-finished die-cutting roller to form the die-cutting roller, wherein the first blade groups and the second blades are alternately distributed along the circumference of the die-cutting roller, each group of the first blade groups includes a plurality of first blades, and each first blade of the same group of the first blade groups and each adjacent second blade are used together for die-cutting to form a die-cutting piece.

3. A die-cutting roller set, characterized in that: The die-cutting roller group is manufactured by the manufacturing method of the die-cutting roller group as claimed in claim 1 or 2; the die-cutting roller group includes a die-cutting roller and a bottom roller, the die-cutting roller is provided with a first gear, and the bottom roller is provided with a second gear meshing with the first gear.

4. A die-cutting roller set according to claim 3, characterized in that: The die-cutting roller is integrally arranged with the first gear.

5. A die-cutting roller set according to claim 4, characterized in that: The bottom roller and the second gear are integrally arranged in the same material.

6. A die-cutting roller assembly according to claim 3, characterized in that: The roller surface of the die-cutting roller is provided with m groups of first blade groups and m second blades, the first blade groups and the second blades are alternately distributed along the circumference of the die-cutting roller, each group of the first blade groups includes multiple first blades, and the first blades of the same group of the first blade groups and the adjacent second blades are used together for die-cutting to form a die-cut part.

7. A die-cutting device, characterized in that: Comprising the die-cutting roller set as described in any one of claims 3 to 6.

8. A die-cutting device according to claim 7, characterized in that: It also includes a power roller and a transfer module, the power roller is transmission-connected to the bottom roller and used to drive the bottom roller to rotate, the transfer module is arranged on one side of the die-cutting roller group, the transfer module is used to transfer the die-cut pieces formed by the die-cutting roller group to the protective film, and there is a preset interval d between any two adjacent die-cut pieces on the protective film; the transfer module includes a driving roller for driving the protective film to move, the driving roller is transmission-connected to the power roller, and the rotation speed of the driving roller is the same as the rotation speed of the power roller.

9. A die-cutting device according to claim 8, characterized in that: The bottom roller is provided with a third gear, the power roller is provided with a fourth gear, the third gear is meshed with the fourth gear, and the gear ratio n between the third gear and the fourth gear satisfies: n=(d+l1) / l1.

10. A die-cutting device according to claim 9, characterized in that: The modules of the third gear and the fourth gear are both 1.0106.

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