A die cutting roller set, manufacturing method and die cutting apparatus

Abstract

The application discloses a die-cutting roller set, a manufacturing method and a die-cutting device. In the installation method of the die-cuting roller set, a first reference circumference l2 of a die-cutting roller is obtained according to a preset size l1 of a die-cutting piece in a preset direction; a second reference circumference of a graduation circle of a first gear is obtained according to the first reference circumference; then, a first gear with a value closest to the second reference circumference is selected from a database, a first gear parameter of the first gear is obtained, and a second gear parameter is obtained; then, a first actual circumference and a second actual circumference are obtained according to the first gear parameter and the second gear parameter, and the first gear, the second gear, the die-cutting roller and a bottom roller are manufactured according to the first actual circumference and the second actual circumference respectively. Furthermore, in the manufacturing method of the die-cutting roller set, the die-cutting roller set is manufactured according to the preset size of the die-cutting piece, so that m die-cutting pieces can be processed in one rotation of the die-cutting roller, the gap between the die-cutting pieces can be smaller, and the utilization rate of the film material is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of die cutting, in particular to a die cutting roller set, a manufacturing method and a die cutting device. BACKGROUND

[0002] In the die cutting process, the die cutting roller set is used to form die cut pieces on the film material, 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 set is used to die cut the film material, there is a gap between the adjacent two die cut pieces, which reduces the utilization rate of the film material. SUMMARY

[0004] The present application aims to at least solve one of the problems in the prior art. The first aspect of the present application provides a manufacturing method of a die cutting roller set. The die cutting roller set manufactured by the manufacturing method can improve the utilization rate of the film material when die cutting the film material. The second aspect of the present application further provides a die cutting roller set. The third aspect of the present application further provides a die cutting device.

[0005] The manufacturing method of the die cutting roller set according to the first aspect of the present application 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 engaged with the first gear. The manufacturing method comprises the following steps:

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

[0007] 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: ml1=l2, and 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 the same as the first reference circumference in value;

[0009] Obtaining 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 the modulus in the second gear parameter is the same as the modulus in the first gear parameter in value;

[0011] determining 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 reference circle in the first gear parameter is identical in value with the first actual circumference, and the circumference of the reference circle in the second gear parameter is identical in value with the second actual circumference;

[0012] manufacturing the first gear according to the first gear parameter, manufacturing the second gear according to the second gear parameter, manufacturing the die cutting roller according to the first actual circumference, manufacturing the bottom roller according to the second actual circumference, and assembling the first gear, the second gear, the die cutting roller and the bottom roller to form the die cutting roller set.

[0013] The installation method of the die cutting roller set of the die cutting device has at least the following beneficial effects: in the installation method of the die cutting roller set of the present application, the preset size l1 of the die cutting piece in the preset direction is obtained first, wherein the die cutting piece is formed by the die cutting roller set; then, the first reference circumference l2 of the die cutting roller 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 reference circle of the first gear is obtained according to the first reference circumference l2, wherein the second reference circumference is identical in value with the first reference circumference; then, the first gear parameter of the first gear is obtained from the database, wherein the first gear parameter is closest to the second reference circumference in the circumference data of the reference circle; then, the second gear parameter of the second gear is selected according to the first gear parameter, wherein the modulus in the second gear parameter is identical in value with the modulus in the first gear parameter; then, the first actual circumference of the die cutting roller 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 reference circle in the first gear parameter is identical in value with the first actual circumference, and the circumference of the reference circle in the second gear parameter is identical in value with the second actual circumference; then, the first gear is manufactured according to the first gear parameter, the second gear is manufactured according to the second gear parameter, 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 set. Furthermore, in the manufacturing method of the die cutting roller set, the die cutting roller set is manufactured according to the preset size of the die cutting piece, so that m die cutting pieces can be processed in one rotation of the die cutting roller, the gap between the die cutting pieces can be smaller, and the utilization rate of the film material is improved.

[0014] The manufacturing method of the die cutting roller set according to the first aspect of the present application, the die cutting roller is manufactured according to the first actual circumference, comprising the following steps:

[0015] The die cutting roller semi-finished product is manufactured according to the first actual circumference, wherein the value of the circumference of the die cutting roller semi-finished product is identical with 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 multiple first blades, 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 part.

[0017] The die-cutting roller group provided in accordance with the embodiment of the second aspect of the present invention is manufactured using 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, and 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 assembly 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 assembly 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 the first blades and adjacent second blades of the same group of first blade groups are used together to die-cut to form a die-cut part.

[0021] The die-cutting device provided in accordance with the third embodiment of the present invention includes the die-cutting roller group provided in accordance with the second embodiment 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 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 drive roller for driving the protective film to move, the drive roller is transmission-connected to the power roller, and the rotation speed of the drive 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, and 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 application will be set forth in part in the description which follows, and in part will be obvious from the description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0026] The application will be further described by examples in conjunction with the accompanying drawings;

[0027] Figure 1 Flow chart of manufacturing method of die cutting roller set for one embodiment of the present application;

[0028] Figure 2 Flow chart of manufacturing die cutting roller according to first actual circumference for one embodiment of the present application;

[0029] Figure 3 Structure schematic diagram of die cutting roller set for one embodiment of the present application.

[0030] Reference signs:

[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 part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the accompanying drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as the limitation of the protection scope of the present application.

[0035] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0037] In the description of the present application, unless otherwise explicitly defined, the words such as arrangement, installation, connection and the like should be understood in a broad sense, and the person skilled in the art can determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0038] The following refers to Figure 1 And Figure 2 The manufacturing method of the die cutting roller set of the first aspect embodiment of the present application is described in detail.

[0039] Referring to Figure 1 The manufacturing method of the die cutting roller set according to the embodiment of the present application includes but is not limited to the following steps:

[0040] Step S100, obtaining a preset size l1 of the die cutting piece in a preset direction, wherein the die cutting piece is formed by die cutting with the die cutting roller set;

[0041] It should be noted that when the die cutting roller set is used to die cut the die cutting piece on the film material, the film material is arranged along the preset direction.

[0042] Step S200, 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: ml1=l2, m is a positive integer;

[0043] It can be understood that if the film material is die cut by using the die cutting roller 100 with the first reference circumference, 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 cutting pieces on the film material every rotation, and the gap between each die cutting piece die cut on the film material can be exactly zero.

[0044] Step S300, obtaining a second reference circumference of the index circle of the first gear 110 according to the first reference circumference l2, wherein the second reference circumference is the same in value as the first reference circumference;

[0045] It should be noted that the first gear 110 is installed on the die cutting roller 100, the second gear 210 is installed on the bottom roller 200, the first gear 110 and the second gear 210 are engaged, and the specifications of the first gear 110 and the second gear 210 are the same, so that the die cutting roller 100 and the bottom roller 200 can rotate synchronously at the same speed, and correspondingly, the second reference circumference of the index circle of the first gear 110 is the same in value 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 on the circumference data of the index circle;

[0047] In step S500, the second gear parameter of the second gear 210 is selected according to the first gear parameter, wherein the modulus in the second gear parameter is the same in value as the modulus in the first gear parameter.

[0048] In step S600, 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 parameter and the second gear parameter, wherein the circumference of the reference circle in the first gear parameter is the same in value as the first actual circumference, and the circumference of the reference circle in the second gear parameter is the same in value as the second actual circumference.

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

[0050] In this step, the first gear parameter of the first gear 110 is obtained from the database, the second gear parameter of the second gear 210 is selected according to the first gear parameter, 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 parameter and the second gear parameter. Therefore, the first gear 110 and the second gear 210 can be selected from existing specification gears, which reduces the acquisition difficulty of the first gear 110 and the second gear 210. Moreover, since the first actual circumference is close in value 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 a certain gap between each die cutting piece formed by the die cutting roller 100 cutting the film material, the gap between each die cutting piece can be smaller, so as to be negligible.

[0051] In step S700, 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.

[0052] It can be understood that in the installation method of the die cutting roller set of the present application, first, a preset size l1 of the die cutting piece in a preset direction is obtained, wherein the die cutting piece is formed by die cutting with the die cutting roller set; then, a 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, 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 the same in value as the first reference circumference; next, 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 parameter of the second gear 210 is selected according to the first gear parameter, wherein the modulus in the second gear parameter is the same in value as the modulus in the first gear parameter; next, 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 the same in value as the first actual circumference, and the circumference of the pitch circle in the second gear parameter is the same in value 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 the die cutting roller set. Further, in the manufacturing method of the die cutting roller set of the present application, 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 processed in one revolution of the die cutting roller, the gap between the die cutting pieces can be smaller, and the utilization rate of the film material is improved.

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

[0054] In step S710, a die cutting roller semi-finished product is manufactured 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;

[0055] In step S720, m groups of first blade sets and m second blades are processed on the die cutting roller semi-finished product to form the die cutting roller 100, wherein the first blade sets and the second blades are alternately distributed along the circumference of the die cutting roller 100, each group of first blade sets includes a plurality of first blades, and each first blade of the same group of first blade sets and each second blade adjacent thereto are used together to form one die cutting piece.

[0056] It can be understood that, by setting the second cutting edge, and each first cutting edge of the same first cutting edge group and each adjacent second cutting edge 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 cutting edge can die-cut the junction of two adjacent die-cut pieces, so that the number of cutting edges on the die-cut roller 100 can be set smaller, to reduce the probability of the occurrence of the cutting edge collapse phenomenon on the die-cut roller 100.

[0057] With reference to Figure 3 According to the second aspect of the present application, the die-cut roller set is manufactured by the manufacturing method of the first aspect of the present application; the die-cut roller set comprises a die-cut roller 100 and a bottom roller 200, the die-cut roller 100 is provided with a first gear 110, the bottom roller 200 is provided with a second gear 210 engaged with the first gear 110, and the first gear 110 and the second gear 210 are of the same specification.

[0058] It can be understood that, since the first gear 110 and the second gear 210 are engaged, and the first gear 110 and the second gear 210 are of the same modulus, the die-cut roller 100 and the bottom roller 200 can rotate synchronously at the same speed.

[0059] In further embodiments of the present application, the die-cut roller 100 is integrally provided with the first gear 110.

[0060] In further embodiments of the present application, the bottom roller 200 is integrally provided with the second gear 210.

[0061] In some embodiments of the present application, the roller surface of the die-cut roller 100 is provided with m first cutting edge groups and m second cutting edges, the first cutting edge groups and the second cutting edges are alternately distributed along the circumference of the die-cut roller 100, each first cutting edge group comprises a plurality of first cutting edges, and each first cutting edge of the same first cutting edge group and each adjacent second cutting edge are used together to die-cut to form a die-cut piece.

[0062] It can be understood that, by setting the second cutting edge, and each first cutting edge of the same first cutting edge group and each adjacent second cutting edge 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 cutting edge can die-cut the junction of two adjacent die-cut pieces, so that the number of cutting edges on the die-cut roller 100 can be set smaller, to reduce the probability of the occurrence of the cutting edge collapse phenomenon on the die-cut roller 100.

[0063] According to the third aspect of the present application, the die-cut device comprises the die-cut roller set of the second aspect of the present application.

[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 drive roller for driving the protective film to move, the drive roller is transmission-connected to the power roller 300, and the rotation speed of the drive 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 likely 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 separated 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 of the third gear 220 and the fourth gear 310 satisfies: n=(d+l1) / l1.

[0068] It should be noted that the rotational speed of the driving roller of the transfer module is the same as the rotational speed of the power roller 300. By arranging the third gear 220 and the fourth gear 310 between the bottom roller 200 and the power roller 300, and the gear ratio n of the third gear 220 and the fourth gear 310 satisfies: n=(d+l1) / l1, the rotational speed ratio between the bottom roller 200 and the driving roller can be (d+l1) / l1, and thus, 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] While 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 invention, and that the scope of the 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 assembly 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. The manufacturing method includes the following steps: Obtaining a preset dimension l1 of a die-cut piece in a preset direction, wherein the die-cut piece is die-cut by the die-cutting roller assembly; 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, where 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 the same as the first reference circumference in value; 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 module in the second gear parameter is the same as a module in the first gear parameter in value; Determining a first actual circumference of the die-cutting roller and a second actual circumference of the bottom roller according to first gear parameters and second gear parameters, wherein the circumference of the pitch circle in the first gear parameters is the same as the first actual circumference in value, and the circumference of the pitch circle in the second gear parameters is the same as the second actual circumference in value; 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 assembly 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 die-cutting roller semi-finished product according to the first actual circumference, wherein the circumference of the die-cutting roller semi-finished product is the same as 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 multiple first blades, and each first blade and each adjacent second blade of the same group of the first blade groups are used together to die-cut to form a die-cut part.

3. A die-cutting roller set, characterized in that: The die-cutting roller group is manufactured using the manufacturing method of the die-cutting roller group as described 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. The die-cutting roller assembly according to claim 3, characterized in that: The die-cutting roller and the first gear are integrally arranged in the same material.

5. The die-cutting roller assembly according to claim 4, characterized in that: The bottom roller and the second gear are arranged in a homogeneous and integral manner.

6. The 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, and 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 each first blade and each adjacent second blade of the same group of the first blade groups are used together to die-cut to form a die-cut part.

7. A die-cutting device, characterized in that: The method comprises the die-cutting roller set according to 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 is used to drive the bottom roller to rotate, the transfer module is arranged on one side of the die-cutting roller group, and 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 drive roller for driving the protective film to move, the drive roller is transmission-connected to the power roller, and the rotation speed of the drive roller is the same as the rotation speed of the power roller.

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

10. The 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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