A method for manufacturing copper foil die-cut parts

Abstract

The present invention relates to a method for manufacturing a copper foil die-cut part, the copper foil die-cut part comprises a protective film layer, a copper foil layer, a double-sided adhesive layer and a release paper layer arranged in sequence from top to bottom, the contour of the protective film layer comprises an overlap section and a staggered section, the overlap section overlaps with the contour of the copper foil layer, the staggered section is located on the surface of the copper foil layer and staggered with the contour of the copper foil layer; during the preparation process, a first auxiliary release film is added to the position of the protective film to be punched, the protective film to be punched and the copper foil are separated, the copper foil is protected from being affected during punching and there is no knife mark, and at the same time, a utility knife is used to process the staggered section contour of the protective film layer to improve the processing efficiency. Compared with the prior art, the present invention has the advantages of no knife marks on the copper foil surface, convenient processing of the protective film layer, and high die-cutting efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of die-cutting, and in particular to a method for manufacturing a copper foil die-cut piece. Background Art

[0002] The appearance requirements of current copper foil products are becoming increasingly stringent, requiring copper foil with a thickness of about 0.05 to be free of any pits or creases after production; Figure 1 As shown, it includes a single-sided adhesive layer, a copper foil layer, a double-sided adhesive layer and a release paper layer arranged in sequence from top to bottom, wherein the single-sided adhesive layer covers a part of the copper foil layer for insulation, but cannot cover all the copper foil parts, and the exposed copper foil layer is used for welding. The other side of the copper foil layer is affixed with two pieces of conductive adhesive, one large and one small, and then the large piece of conductive adhesive is affixed to the release paper layer, which has the same contour as the large piece of conductive adhesive; during the processing of this product, since the staggered section is located exactly on the surface of the copper foil layer, direct punching will cause knife marks on the copper foil, causing the product to fail to meet customer requirements. In order to ensure that there is no indentation on the copper foil surface, it is usually hoped that the single-sided adhesive layer will be accurately affixed to the copper foil surface according to the predetermined position. However, if the protective film material is directly affixed to the copper foil material, the accuracy of the laminating machine is generally ±1MM, and products with smaller tolerances cannot be produced; in addition, the current processing method requires 3 steps to produce, and the processing efficiency is low. Summary of the invention

[0003] The purpose of the present invention is to provide a method for manufacturing copper foil die-cut parts in order to overcome the defects of the prior art that the copper foil surface is prone to knife marks and the processing precision is low.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A method for manufacturing a copper foil die-cut part, the copper foil die-cut part comprising a protective film layer, a copper foil layer, a double-sided adhesive layer and a release paper layer arranged in sequence from top to bottom, the contour of the protective film layer comprising an overlapping section and a staggered section, the overlapping section coincides with the contour of the copper foil layer, the staggered section is located on the surface of the copper foil layer and staggered with the contour of the copper foil layer;

[0006] The preparation method comprises the following steps:

[0007] (a) Stick the release paper and double-sided tape on the bottom tape in sequence;

[0008] (b) laminating a copper foil, a first auxiliary release film and a protective film in sequence on the surface of the double-sided adhesive tape of the intermediate product obtained in step 1, wherein the surface of the copper foil is divided into a cutting area directly laminating with the first auxiliary release film and a main area directly laminating with the protective film; using a utility knife to cut the outline of the staggered section on the protective film located in the cutting area; removing the first auxiliary release film and removing the waste on the protective film, and using a laminating machine to flatten the protective film on the copper foil;

[0009] (c) using an outer contour punching die to punch out the outer contour of the copper foil die-cut part on the protective film, copper foil, double-sided adhesive tape and release paper of the intermediate product of the step, and discharging the waste to obtain the copper foil die-cut part.

[0010] The distance between the boundary line between the cutting area and the main body area and the outline of the offset section is 1-5 mm.

[0011] One side edge of the first auxiliary release film is a boundary line between the cutting area and the main area, and the other side edge coincides with the edge of the copper foil.

[0012] The double-sided adhesive layer is provided with a long strip-shaped adhesive-free area extending along the forward direction of the bottom adhesive tape, and the long strip-shaped adhesive-free area divides the double-sided adhesive layer into two areas, namely a main adhesive area and a secondary adhesive area, and the contours of the main adhesive area and the protective film layer overlap each other. The step (a) is as follows: sequentially attaching the release paper, the double-sided adhesive tape and the second auxiliary release film to the bottom adhesive tape; using a double-sided adhesive punching die to punch out the adhesive-free area contour of the double-sided adhesive layer on the surface of the second auxiliary release film and the double-sided adhesive, and making the adhesive-free area contours obtained by two adjacent punchings connected end to end.

[0013] After the copper foil is attached to the double-sided adhesive tape with a non-glue area, an imprint appears on the copper foil at the non-glue area, and the utility blade cuts the protective film at the imprint to obtain the staggered segment profile, wherein the protective film and the first auxiliary release film are both transparent materials.

[0014] The protective film is an insulating single-sided adhesive, and the adhesive surface of the insulating single-sided adhesive is bonded to the copper foil layer.

[0015] The insulating single-sided adhesive is PET single-sided adhesive.

[0016] The thickness of the copper foil layer is 0.05 mm.

[0017] The utility blade is mounted on a frame of a die-cutting machine via a blade holder, wherein the blade holder comprises a blade holder fixing rod mounted above the material strip and a blade mounting plate fixed on the blade holder fixing rod, and the utility blade is fixedly mounted on the blade mounting plate.

[0018] The height of the knife holder fixing rod can be adjusted and installed on the frame of the die-cutting machine.

[0019] The middle of the tool holder fixing rod is a hexagonal column structure, and the blade mounting plate is provided with a hexagonal hole for matching the hexagonal column structure.

[0020] A threaded hole is arranged at the hexagonal hole of the blade mounting plate, a screw is arranged in the threaded hole, and the end of the screw is in contact connection with the hexagonal column structure.

[0021] The device for processing the copper foil surface protective film in the above method includes a material discharge roller after bonding the copper foil, a first auxiliary release film discharge roller, a first laminating machine for bonding the first auxiliary release film to the copper foil surface, a protective film discharge roller, a second laminating machine for bonding the protective film to the copper foil surface and the first auxiliary release film surface, a utility knife blade for positioning and cutting the protective film, a protective film waste winding roller for tearing off the protective film waste, a first auxiliary release film waste winding roller for tearing off the first auxiliary release film waste, a third laminating machine for bonding the side of the protective film to the copper foil, and an intermediate material winding roller for winding up the processed product.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] (1) The copper foil layer is protected by using an auxiliary release film, so that there are no knife marks on the surface of the copper foil layer, meeting the quality requirements of copper foil products;

[0024] (2) By using a utility knife to process the contour of the protective film on the surface of the copper foil, a die-cutting tool is saved, and a die-cutting step is omitted. Generally, die-cutting tools are expensive, so this application greatly saves equipment investment;

[0025] (3) The present invention utilizes the fact that the copper foil surface will produce marks in the non-glue area of ​​the double-sided adhesive due to the height difference between the non-glue area and the glue area. A transparent protective film material and a first auxiliary release film are selected, and the indentations on the copper foil are used as the upper and lower limits of the cutting position of the art blade, which facilitates the determination of the cutting position of the art blade, thereby ensuring that the contour position of the staggered section of the protective film layer meets the requirements. This positioning method is simple and easy to operate.

[0026] (4) The manufacturing method of the present invention has relatively low requirements on the width of the protective film material. The minimum width of the protective film material can be 3MM wider than the product width on one side, and the maximum width can be no wider than the width of the positioning hole of the die-cutting machine tape, which is conducive to consuming the material head of the protective film material and reducing material consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the copper foil die-cutting part in the present invention;

[0028] Figure 2 A schematic diagram of the structure of the die-cutting machine used in step (b) of the present invention;

[0029] Figure 3 It is a schematic diagram of the manufacturing method of the present invention;

[0030] Figure 4 It is a schematic diagram of the main structure of the tool holder;

[0031] Figure 5 is a schematic diagram of the side structure of the tool holder;

[0032] Figure 6 A schematic diagram of the structure of the die-cutting props and die-cutting layers used in Comparative Example 1;

[0033] Figure 7 A schematic diagram of the structure of the die-cutting props and die-cutting layers used in Comparative Example 2;

[0034] In the figure, 1 is a protective film layer, 2 is a copper foil layer, 3 is a double-sided adhesive layer, 4 is a release paper layer, 5 is a copper foil die-cut piece, 6 is a bottom tape, 7 is a release paper, 8 is a double-sided adhesive, 9 is a second auxiliary release film, 10 is a copper foil, 11 is a protective film, 12 is a first auxiliary release film, 13 is an overlapping section, 14 is a staggered section, 15 is a double-sided adhesive punching die, 1501 is a knife line for a non-glue area, 1502 is a trimming knife line, 16 is a utility blade, 17 is an outer contour punching die, 1701 is a first contour knife line, 1702 is a second contour knife line, and 18 is a second auxiliary release film and double-sided tape waste discharge, 19 is the knife holder fixing rod, 20 is the blade mounting plate, 21 is the first auxiliary release film discharge roller, 22 is the material discharge roller after laminating the copper foil, 23 is the first laminating machine, 24 is the protective film discharge roller, 25 is the second laminating machine, 26 is the protective film waste winding roller, 27 is the third laminating machine, 28 is the intermediate material winding roller, 29 is the second auxiliary release film waste, 30 is the protective film waste, 31 is the first auxiliary release film waste, 32 is the third auxiliary release film, 33 is the folding line, 34 is the screw, 35 is the blade mounting part, and 36 is the hexagonal column structure. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention. Example 1

[0036] A method for making a copper foil die-cut part, the method is used for processing such as Figure 1The copper foil die-cut part shown in the figure comprises a protective film layer 1, a copper foil layer 2, a double-sided adhesive layer 3 and a release paper layer 4 arranged in sequence from top to bottom, wherein the protective film layer 1 is made of PET single-sided adhesive which plays an insulating role, and the double-sided adhesive layer 3 is a conductive double-sided adhesive. From the perspective of the outer contour, the contour of the protective film layer 1 includes an overlapping section and an offset section. The overlapping section overlaps with the contour of the copper foil layer 2, and the offset section is located on the surface of the copper foil layer 2 and is offset from the contour of the copper foil layer 2. The double-sided adhesive layer attached to the copper foil layer 2 includes a main adhesive area with a larger area, a secondary adhesive area with a smaller area, and a non-adhesive area separated from the main adhesive area and the secondary adhesive area. The contours of the bottom release paper layer 4, the main adhesive area and the upper protective film layer 1 overlap each other. The copper foil layer of the copper foil product has a piece covered by the protective film layer 1 and the release paper layer 4 from top to bottom, exposing part of the copper foil layer 2 for welding. The release paper layer 4 is used as a handle release paper. The protective film layer 1 is a PET single-sided adhesive, and the adhesive surface of the PET single-sided adhesive is bonded to the copper foil layer 2. The thickness of the copper foil layer is 0.05mm.

[0037] The method for processing the copper foil die-cut part 5 of the above structure comprises the following steps:

[0038] (a) The release paper 7, the double-sided adhesive tape 8 and the second auxiliary release film 9 are sequentially attached to the bottom adhesive tape 6; Figure 3 The double-sided adhesive punching die 15 shown punches out the glue-free area contour of the double-sided adhesive layer 3 on the surface of the second auxiliary release film 9 and the double-sided adhesive 8 and makes the glue-free area contours obtained by two adjacent punchings connected end to end. The double-sided adhesive punching die 15 is provided with a glue-free area knife line 1501 and a trimming knife line 1502. The knife line punching layer close to the secondary glue area in the glue-free area knife line 1501 is the second auxiliary release film 9 and the double-sided adhesive 8, and the knife line punching layer close to the main glue area is the second auxiliary release film 9, the double-sided adhesive 8 and the release paper 7. The contour close to the glue-free area side is processed on the release paper 7. The trimming knife line 1502 is located in the non-product area, and the punching layers are the second auxiliary release film 9, the double-sided adhesive 8 and the release paper 7. The second auxiliary release film and the double-sided adhesive are discharged 18 as waste, including the waste outside the trimming knife line and the waste in the glue-free area; then the second auxiliary release film waste 19 on the surface of the product area is discharged.

[0039] (b) Copper foil 10 is sequentially attached to the surface of the double-sided adhesive tape 8 of the intermediate product obtained in step (a), and then Figure 2The device shown in the figure adheres a transparent first auxiliary release film 12 and a transparent protective film 11 to the surface of the copper foil 10. The surface of the copper foil 10 is divided into a cutting area directly adhered to the first auxiliary release film 12 and a main area directly adhered to the protective film 11. The side contour of the first auxiliary release film 12 is the boundary between the cutting area and the main area. The distance between the boundary and the contour of the staggered section 14 is 1 mm. One side edge of the first auxiliary release film is the boundary between the cutting area and the main area. A utility knife blade 16 is used to cut the contour of the staggered section 14 on the protective film 11 located in the cutting area. The first auxiliary release film waste 31, that is, the first auxiliary release film with a knife mark thereon, is pulled out and the protective film waste 30 is excluded. The protective film 11 is flattened on the copper foil 10 using a laminating machine.

[0040] The device used in this step includes: a material discharge roller 22 after laminating the copper foil, a first auxiliary release film discharge roller 21, a first laminating machine 23 for laminating the first auxiliary release film to the surface of the copper foil, a protective film discharge roller 24, a second laminating machine 25 for laminating the protective film to the surface of the copper foil and the surface of the first auxiliary release film, a utility knife 16 for positioning and cutting the protective film, a protective film waste winding roller 26 for tearing off the protective film waste, a first auxiliary release film waste winding roller for tearing off the first auxiliary release film waste is not drawn in the figure, is located on the back of the die-cutting machine, and is used to laminar The side of the protective film is on the copper foil. The third laminating machine 17, used to wind up the processed product; the utility knife 16 is installed on the die-cutting machine through a knife holder, such as Figure 4 and Figure 5As shown, the tool holder includes a tool holder fixing rod 19 mounted above the material strip and a blade mounting plate 20 fixed on the tool holder fixing rod 19. The utility blade 16 is fixedly mounted on the blade mounting plate 20. The blade mounting plate 20 is provided with a blade mounting portion 35 with a circular protruding structure. The utility blade 16 generally has a through hole at the end. The through hole of the utility blade 16 is matched and sleeved on the blade mounting portion 35, and then the utility blade 16 is fixed by crimping with a nut. The middle of the tool holder fixing rod 19 is a hexagonal column structure, and the blade mounting plate is provided with a hexagonal hole for matching the hexagonal column structure. The hexagonal hole of the blade mounting plate is provided with a threaded hole, and a screw 34 is provided in the threaded hole. The end of the screw 34 is connected to the hexagonal column structure in abutment. Therefore, the blade mounting plate of this embodiment can slide along the axial direction of the tool holder fixing rod 19, so the specific cutting position of the utility blade 16 can be adjusted. After the adjustment is in place, the screw 34 can be directly tightened. The height of the tool holder fixing rod 19 relative to the die-cutting frame is adjustable. The downward pressure of the utility blade 16 is controlled by controlling the height of the tool holder fixing rod 19 relative to the material strip. This height adjustable mechanism is a common structure in the art. For example, the lead screw assembly can achieve stepless adjustment, and multiple mounting holes of different heights can achieve multi-level adjustment, etc. The specific structure of the height adjustment is not limited. After the glue-free area is processed, an imprint appears on the copper foil at the position of the glue-free area. The protective film 11 is cut at the imprint with the utility blade 16 to obtain the staggered segment contour. Positioning by the imprint is simple and convenient, which improves the processing efficiency.

[0041] (c) Using an outer contour punching die 17 to punch out the outer contour of a copper foil die-cut piece 5 on the protective film 11, copper foil 10, double-sided adhesive tape 8 and release paper 7 of the intermediate product in step b, and discharging waste to obtain a copper foil die-cut piece 5, wherein the outer contour punching die 17 includes a first contour knife line 1701 and a second contour knife line 1702, wherein the first contour knife line 1701 is used to process the remaining contour of the release paper layer 4, and the punching levels are the second auxiliary release film 9, the double-sided adhesive tape 8 and the release paper 7, and the second contour knife line 1702 is used to punch out the outer contour of the secondary glue area away from the main glue area, and the punching levels are the second auxiliary release film 9 and the double-sided adhesive tape 8, and the remaining waste outside the contour is discharged one by one to obtain a copper foil die-cut piece. Example 2

[0042] A method for manufacturing a copper foil die-cut part, the method steps are the same as those of the main body of Example 1, except that when the first auxiliary release film 12 is attached, the distance between the contour of one side of the first auxiliary release film 12, that is, the boundary line between the cutting area and the main area, and the contour of the staggered section 14 is 5 mm.

[0043] Comparative Example 1

[0044] This comparative example is a method for making a copper foil die-cut part in the prior art, comprising the following steps:

[0045] (a) The release paper 7, the double-sided adhesive tape 8 and the second auxiliary release film 9 are sequentially attached to the bottom adhesive tape 6; the double-sided adhesive punching die 15 is used to punch out the outline of the adhesive-free area of ​​the double-sided adhesive layer 3 on the surface of the second auxiliary release film 9 and the double-sided adhesive tape 8 and discard them. The structure of the double-sided adhesive punching die 15 is as follows: Figure 6 As shown;

[0046] (b) Then, copper foil 10 and punched protective film layer 1 are sequentially attached to the surface of the double-sided adhesive tape 8 of the intermediate product obtained in step (a), and the outer contour of the product is punched out using an outer contour punching die 17 to obtain a copper foil die-cut part with a protective film.

[0047] In this process, the protective film on the copper foil is laminated instead of being cut by a tool, so there will be no knife marks on the product. However, the protective film on the copper foil is completely laminated by a laminating machine with a laminating accuracy of ±1MM. Products with smaller tolerances cannot be produced, which will cause the edge of the protective film to be misaligned with the notch of the copper foil on this product.

[0048] Comparative Example 2

[0049] This comparative example is a method for making a copper foil die-cut part in the prior art, comprising the following steps:

[0050] A fold line 33 is processed on the bottom tape 6, and then materials are attached to both sides of the fold line of the bottom tape 6. The protective film 11 and the third auxiliary release film 32 are attached to one side of the fold line, and the release paper, double-sided tape and the third auxiliary release film 32 are attached to the other side of the fold line. Figure 7 The knife die shown punches out the outline of the double-sided adhesive-free area and the staggered section outline of the protective film at the same time; the two auxiliary release film sheets are discarded and removed, the bottom tape is folded in half and then opened, so that the double-sided adhesive is attached to the surface of the release paper, forming a layered stacking material of the protective film, copper foil, double-sided adhesive, release paper and bottom tape, and then the outer contour of the copper foil die-cut part is punched out.

[0051] The protective film on the copper foil is folded in half and then pasted on instead of being punched by a knife. There will be no knife marks on the product, but the folding process consumes more materials and the folding accuracy can only reach ±0.3MM, which has a large error.

[0052] Compared with the processing process in the prior art, the present invention is to paste the release film on the position of the protective film to be processed, and then paste the protective film, and then punch the second step. At this time, the knife marks of the knife are on the release film instead of the copper foil, and then the release film is pulled out from under the protective film, and then the protective film is flattened by the laminating machine. This method ensures that the copper foil is not affected during punching and improves the appearance; it also ensures the dimensional accuracy of the protective film. The use of the art blade 16 to process the protective film material is easy to maintain the processing accuracy. In the present invention, the requirements for slitting the raw materials of the protective film are low. Since the knife holder is used to cut the protective film, the specifications of the protective film do not need to be so precise, and the tolerance of the width specifications of the protective film is also high. The minimum can be 3MM wider than the single side width of the product, and the widest can not exceed the width of the positioning hole of the die-cutting machine material strip. The multi-step positioning punching of the die-cutting machine will punch positioning holes on both sides of the product material strip in the first step of punching for positioning of the subsequent steps. The positioning hole diameter used by our company is 3MM. Assuming that the spacing between the positioning holes is 50MM, the maximum width is 50MM (hole spacing)-3MM (hole diameter)-4MM (operating margin for material cutting personnel and die-cutting and laminating personnel) = 43MM. Therefore, protective films with specifications of 3~43MM can be used in this application, which is helpful for the production of samples and the consumption of material heads (if the total width of the material is 1000MM and is cut by 28MM, the remaining 19.6MM is called the head). This product is produced in this way, which saves a step of die-cutting process. The freed-up die-cutting machine and personnel can be used to make other products or arrange two production lines for this single product, which increases the product's production capacity in disguise.

[0053] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A method for manufacturing a copper foil die-cut part, the copper foil die-cut part comprising a protective film layer (1), a copper foil layer (2), a double-sided adhesive layer (3) and a release paper layer (4) arranged in sequence from top to bottom, the contour of the protective film layer (1) comprising an overlapping section (13) and a staggered section (14), the overlapping section (13) overlapping with the contour of the copper foil layer (2), the staggered section (14) being located on the surface of the copper foil layer (2) and staggered with the contour of the copper foil layer (2); the double-sided adhesive layer (3) being provided with a long strip-shaped adhesive-free area extending along the forward direction of a bottom adhesive tape (6), and the long strip-shaped adhesive-free area dividing the double-sided adhesive layer (3) into two areas, namely a main adhesive area and a secondary adhesive area, the contours of the main adhesive area and the protective film layer (1) overlapping from top to bottom; It is characterized in that The preparation method comprises the following steps: (a) laminating a release paper (7), a double-sided adhesive tape (8) and a second auxiliary release film (9) on a bottom adhesive tape (6) in sequence; using a double-sided adhesive punching die (15) to punch out the adhesive-free area contour of the double-sided adhesive layer (3) on the surface of the second auxiliary release film (9) and the double-sided adhesive tape (8) and making the adhesive-free area contours obtained by two adjacent punchings connected end to end; (b) The surface of the double-sided adhesive tape (8) of the intermediate product obtained in step (a) is sequentially bonded with a copper foil (10), a first auxiliary release film (12) and a protective film (11), wherein the surface of the copper foil (10) is divided into a cutting area directly bonded with the first auxiliary release film (12) and a main area directly bonded with the protective film (11); a utility knife (16) is used to cut the outline of the staggered section (14) on the protective film (11) located in the cutting area; the first auxiliary release film (12) is removed and waste on the protective film (11) is removed, and the protective film (11) is bonded flat on the copper foil (10) by a bonding machine; after bonding the copper foil (10) to the double-sided adhesive tape with a non-adhesive area, an imprint appears on the copper foil (10) at the position of the non-adhesive area, and the utility knife (16) cuts the protective film (11) at the imprint to obtain the outline of the staggered section, wherein both the protective film (11) and the first auxiliary release film (12) are made of transparent materials; (c) using an outer contour punching die (17) to punch out the outer contour of the copper foil die-cut piece (5) on the protective film (11), copper foil (10), double-sided tape (8), and release paper (7) of the intermediate product of step (b), and discharging waste to obtain the copper foil die-cut piece (5).

2. The method for making a copper foil die-cut part according to claim 1, characterized in that: The distance between the boundary line between the cutting area and the main body area and the outline of the offset section (14) is 1-5 mm.

3. The method for making a copper foil die-cut part according to claim 1, characterized in that: The protective film (11) is a PET single-sided adhesive, and the adhesive surface of the PET single-sided adhesive is bonded to the copper foil layer (2).

4. The method for making a copper foil die-cut part according to claim 1, characterized in that: The copper foil layer (2) has a thickness of 0.05 mm.

5. The method for making a copper foil die-cut part according to claim 1, characterized in that: The utility blade (16) is mounted on a frame of a die-cutting machine via a blade holder, wherein the blade holder comprises a blade holder fixing rod (19) mounted above the material strip and a blade mounting plate (20) fixed on the blade holder fixing rod (19), and the utility blade (16) is fixedly mounted on the blade mounting plate (20).

6. The method for making a copper foil die-cut part according to claim 5, characterized in that: The height of the knife holder fixing rod (19) is adjustable and mounted on the frame of the die-cutting machine.

7. The method for making a copper foil die-cut part according to claim 5, characterized in that: The middle of the tool holder fixing rod (19) is a hexagonal column structure, and the blade mounting plate is provided with a hexagonal hole for matching the hexagonal column structure.

8. The method for making a copper foil die-cut part according to claim 7, characterized in that: A threaded hole is arranged at the hexagonal hole of the blade mounting plate, a screw is arranged in the threaded hole, and the end of the screw is in contact connection with the hexagonal column structure.

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