PC convex product flat die cutting method

Abstract

The present application relates to PC convex product production technical field, the technical problem that the present application solves is first round hole and convex misregistration etc., in order to solve the above technical problem, the present application provides a kind of high-precision PC convex product flat cutter die cutting method.The present application includes: first process protective film is pasted on second process protective film, release film is pasted on first process protective film;Process shielding film, double-sided adhesive tape, another process shielding film are pasted on the one side, middle, other side above release film respectively;Process release film is pasted on double-sided adhesive tape and two process shielding films;First round hole is cut out on double-sided adhesive tape and multiple positioning holes are cut out on release film;Product is turned upside down, PC is adhered with double-sided adhesive tape;Cut out special-shaped hole and two second round holes, form preformed convex at second round hole, integrate preformed convex into convex;Product is turned upside down, cut out the outer frame of PC and double-sided adhesive tape;The outer frame of release film is cut out.The present application guarantees the angle accuracy of convex etc.

Description

Technical Field

[0001] This invention relates to the field of PC convex product manufacturing technology, and in particular to a method for die-cutting PC convex products with a flat die. Background Technology

[0002] PC embossed products consist of a release film, double-sided adhesive, PC, and a protective film arranged in sequence. They are mainly used in precision structural components inside new energy vehicles, primarily for bonding and flame retardant functions. The process involves punching a first round hole in the double-sided adhesive, punching a shaped hole in the middle of the PC, and punching second round holes at both ends of the PC, forming embossed bumps on the second round holes. The first and second round holes must coincide.

[0003] The existing processing technology uses a rotary die-cutting tool. First, a rotary die-cutting positioning hole is punched in the protective film; then, a first round hole is cut in the double-sided adhesive using the rotary die; next, a shaped hole and a second round hole are cut in the PC using the rotary die, and a convex bump is formed on the second round hole; then, the PC outer frame is punched; finally, the release film outer frame is punched. However, the existing process has the following problems: 1. The positioning accuracy of the rotary die-cutting positioning hole and the first round hole punched in the double-sided adhesive is insufficient, resulting in misalignment between the first round hole on the double-sided adhesive and the convex bump (i.e., there are cases of large and small edges); 2. It is difficult to match the protective film with the rotary die, and the PC surface is unstable, making it easy for the protective film to delaminate from the product; 3. Because the convex bump is formed in one step, and because the PC is relatively soft, it will shrink inward after the convex bump is formed, resulting in a smaller convex bump angle. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art.

[0005] To solve the above technical problems, the present invention provides a method for die-cutting PC convex hull products with a flat die, the steps of which include:

[0006] Provides a second process protective film, a first process protective film, a release film, double-sided adhesive, two process shielding films, and a process release film; attach the first process protective film to the second process protective film, attach the release film to the first process protective film, and ensure that the adhesive surfaces of the first process protective film and the release film are in contact; attach one process shielding film, double-sided adhesive, and another process shielding film to one side, the middle, and the other side above the release film, respectively; attach the process release film to the double-sided adhesive and the two process shielding films;

[0007] The first flat die is used to perform the first die-cutting of the process release film, double-sided tape, release film and first process protective film, cutting out the first round hole on the double-sided tape and forming multiple positioning holes on the release film.

[0008] After the first die-cutting, the product is flipped over to remove the protective film for the second process, the waste material from the first round hole generated during the first die-cutting, and the process release film; and PC is provided, and the smooth surface of the PC is bonded to the double-sided adhesive.

[0009] Using a second flat cutter, the cutter enters from the top down from the first process protective film to perform a second die-cutting on the first process protective film, release film, double-sided tape, and PC, cutting out irregular holes and two second round holes. Then, a pre-formed protrusion is formed at the second round hole by metal molding, and then the pre-formed protrusion is formed into a protrusion by a shaping punch.

[0010] After the second die-cutting, flip the product over and use a third flat blade to perform a third die-cutting on the PC, double-sided tape, and release film to cut out the outer frame of the PC and double-sided tape.

[0011] The release film is die-cut a fourth time using a fourth flat blade to cut out the outer frame of the release film.

[0012] In one embodiment of the present invention, the angle of the punch in the metal molding process is 90°.

[0013] In one embodiment of the present invention, the angle of the shaping punch is 65°.

[0014] In one embodiment of the present invention, after the third die-cutting, the waste PC and double-sided adhesive frame generated during the third die-cutting is removed.

[0015] In one embodiment of the present invention, the outer frame waste of the release film, the process shielding film, and the first process protective film are removed after the fourth die-cutting.

[0016] In one embodiment of the present invention, after the second die-cutting, the material is fed through a laminating machine and then subjected to a third die-cutting.

[0017] In one embodiment of the present invention, the release film is partially cut during the third die-cutting.

[0018] In one embodiment of the present invention, the double-sided adhesive is 3M9080A0.

[0019] In one embodiment of the present invention, the second process protective film is D-62H.

[0020] In one embodiment of the present invention, the process shielding film is ZH9BL.

[0021] The technical solution of the present invention has the following advantages compared with the prior art:

[0022] The PC convex-shaped product die-cutting method of this invention uses a flat die process to improve product matching accuracy; the product does not require a protective film under the flat die process, saving process material costs. In the first die-cutting of this application, the first round hole is cut on the double-sided adhesive and the positioning hole is cut on the release film at the same time, so there is no need for transfer, thus ensuring positioning accuracy and avoiding misalignment between the first round hole and the convex-shaped product. In the second die-cutting, the product after the first die-cutting is flipped upside down, and the product reverse cut is changed to the product forward cut. On the one hand, the accuracy of the second die-cutting is improved, and on the other hand, there is no need to remove waste after the second die-cutting, thus improving efficiency. In the second die-cutting of this application, the second round hole is punched first, then the pre-formed convex-shaped product is cut, and finally the pre-formed convex-shaped product is shaped, thereby ensuring the angular accuracy of the convex-shaped product. Attached Figure Description

[0023] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0024] Figure 1 This is a structural schematic diagram of a PC convex hull product according to a preferred embodiment of the present invention;

[0025] Figure 2 This is an enlarged schematic diagram of the convex hull in a PC convex hull product according to a preferred embodiment of the present invention;

[0026] Figure 3 This is a flowchart of a flat die-cutting method for PC convex hull products according to a preferred embodiment of the present invention;

[0027] Figure 4 This is a first die-cutting blade back image of a flat die-cutting method for PC convex hull products;

[0028] Figure 5 This is a schematic diagram of the first die-cutting step in a flat die-cutting method for PC convex hull products;

[0029] Figure 6 This is a second die-cutting blade back image of a flat die-cutting method for PC convex hull products;

[0030] Figure 7 This is a schematic diagram of the second die-cutting process for a PC convex hull product using a flat die-cutting method;

[0031] Figure 8 This is a third die-cutting blade back image of a flat die-cutting method for PC convex hull products;

[0032] Figure 9 This is a schematic diagram of the third die-cutting step in a flat die-cutting method for PC convex hull products;

[0033] Figure 10 This is the back image of the fourth die-cutting blade in a flat die-cutting method for PC convex hull products;

[0034] Figure 11 This is a schematic diagram of the fourth die-cutting step in a flat die-cutting method for PC convex hull products;

[0035] Figure 12 This is a flowchart of the process of using a laminating machine and a fitting machine to perform flat die-cutting of PC convex-shaped products;

[0036] Explanation of reference numerals in the accompanying drawings: 100, Second process protective film; 200, First process protective film; 300, Release film; 400, Double-sided adhesive; 410, First round hole; 500, Process shielding film; 600, Process release film; 700, PC; 710, Irregularly shaped hole; 720, Second round hole; 730, Convex bulge. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0038] In the comparative embodiment, the PC convex-pack product includes a release film, double-sided adhesive, PC, and a protective film arranged in sequence. Since the protective film is directly bonded to the PC, a circular positioning hole is first punched in the protective film. Then, after transfer, a first circular hole is cut in the double-sided adhesive, resulting in misalignment between the first circular hole on the double-sided adhesive and the convex-pack.

[0039] Reference Figures 1-12 As shown, this embodiment of the invention provides a method for die-cutting PC convex-hull products with a flat die, the steps of which include:

[0040] Step S1: Provide a second process protective film 100, a first process protective film 200, a release film 300, double-sided adhesive 400, two process shielding films 500, and a process release film 600. Using a first laminating machine, attach the first process protective film 200 to the second process protective film 100, and attach the release film 300 to the first process protective film 200, with the adhesive surfaces of the first process protective film 200 and the release film 300 in contact; attach one process shielding film 500, double-sided adhesive 400, and another process shielding film 500 to one side, the middle, and the other side above the release film 300, respectively; attach the process release film 600 to the double-sided adhesive 400 and the two process shielding films 500.

[0041] Step S2: The first die-cutting machine uses the first flat blade to cut the process release film 600, double-sided adhesive 400, release film 300 and the first process protective film 200 for the first time, cutting out the first round hole 410 on the double-sided adhesive 400 and forming multiple positioning holes on the release film 300.

[0042] Step S3: Flip the product after the first die-cutting over and pass it through the second laminating machine to remove the second process protective film 100, the waste material from the first round hole 410 generated during the first die-cutting, and the process release film 600; and provide PC700. Use the second laminating machine to bond the smooth surface of PC700 to the double-sided adhesive 400.

[0043] Step S4: Using a second flat cutter, the cutter enters from top to bottom through the first process protective film 200. The second positioning machine performs a second die-cutting on the first process protective film 200, release film 300, double-sided adhesive 400, and PC700 to cut out irregular holes 710 and two second round holes 720. Then, the pre-formed protrusion is formed by flanging at the second round hole 720 through a metal die. Finally, the pre-formed protrusion is formed into a protrusion 730 through a shaping punch.

[0044] Step S5: After the second die-cutting, the material is fed through the third laminating machine for the third die-cutting.

[0045] Step S6: Flip the product after the second die-cutting over, and use the third flat blade on the third positioning machine to perform a third die-cutting on the PC700, double-sided adhesive 400, and release film 300, cutting out the outer frame of the PC700 and double-sided adhesive 400. Additionally, during the third die-cutting, half of the release film 300 is cut.

[0046] Step S7: After the third die-cut, the PC700 and double-sided adhesive 400 frame waste generated from the third die-cut is removed by the fourth laminating machine.

[0047] Step S8: The release film 300 is die-cut for the fourth time using the fourth flat blade through the fourth positioning machine to cut out the outer frame of the release film 300.

[0048] Step S9: After the fourth die-cutting, the outer frame waste of the release film 300, the process shielding film 500, and the first process protective film 200 are removed by the fifth laminating machine.

[0049] Specifically, this application employs a flat die-cutting process to improve product matching accuracy; the flat die-cutting process eliminates the need for a protective film, saving on process material costs. In the first die-cutting, the first circular hole 410 is cut on the double-sided adhesive 400 while simultaneously creating a positioning hole on the release film 300. This eliminates the need for transfer, ensuring positioning accuracy and preventing misalignment between the first circular hole 410 and the protrusion 730. During the second die-cutting, the product after the first die-cutting is flipped over for a proper cut, improving accuracy and eliminating the need for waste removal, thus increasing efficiency. In the second die-cutting, the second circular hole 720 is punched first, then the pre-formed protrusion is joined, and finally, the pre-formed protrusion is shaped to ensure the angular accuracy of the protrusion 730.

[0050] Furthermore, the angle of the punch in the metal molding process is 90°, which flanged the second circular hole 720 to form a pre-formed protrusion. Since PC700 is relatively soft, it will quickly spring back after flanging, resulting in a pre-formed protrusion with an angle of 45°. The forming punch has an angle of 65°, and then the 45° pre-formed protrusion is shaped using this 65° forming punch. At this point, the protrusion 730 slightly springs back, forming a 60° protrusion 730. This further improves the angular accuracy of the protrusion 730.

[0051] Furthermore, the double-sided adhesive 400 is 3M 9080A0, and its thickness is 0.15mm. The release film 300 has a thickness of 0.1mm. The PC700 has a thickness of 0.18mm.

[0052] Furthermore, the second process protective film 100 is D-62H, and its thickness is 0.55 mm. The first process protective film 200 has a thickness of 0.06 mm.

[0053] Furthermore, the process shielding film 500 is ZH9BL.

[0054] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A high-precision die-cutting method for PC convex hull products, characterized by: steps include: Provides a second process protective film, a first process protective film, a release film, double-sided adhesive, two process shielding films, and a process release film; The first process protective film is attached to the second process protective film, and the release film is attached to the first process protective film, with the adhesive side of the first process protective film and the release film in contact; a process shielding film, double-sided adhesive, and another process shielding film are respectively attached to one side, the middle, and the other side above the release film; the process release film is attached to the double-sided adhesive and the two process shielding films. The process release film, the double-sided adhesive, the release film and the first process protective film are die-cut for the first time using a first flat die, cutting out the first round hole on the double-sided adhesive and forming multiple positioning holes on the release film; After the first die-cutting, flip the product over to remove the second process protective film, the first round hole waste generated from the first die-cutting, and the process release film. And provide a PC, and attach the smooth side of the PC to the double-sided adhesive; Using a second flat blade, the first process protective film is cut from top to bottom to perform a second die-cut on the first process protective film, the release film, the double-sided adhesive, and the PC, cutting out irregular holes and two second round holes. Then, a pre-formed protrusion is formed at the second round hole by metal molding. Finally, the pre-formed protrusion is formed into a protrusion by a shaping punch. After the second die-cutting, the material is fed through a laminating machine and then subjected to a third die-cutting. After the second die-cutting, the product is flipped over and a third flat blade is used to die-cut the PC, the double-sided adhesive, and the release film to cut out the outer frame of the PC and the double-sided adhesive. During the third die-cutting, the release film is cut in half. After the third die-cut, remove the PC and double-sided tape frame waste generated during the third die-cut; The release film is die-cut a fourth time using a fourth flat blade to cut out the outer frame of the release film; After the fourth die-cutting, the outer frame waste of the release film, the process shielding film, and the first process protective film are removed.

2. The high-precision PC convex hull product flat die-cutting method according to claim 1, characterized in that: The angle of the punch in the metal molding process is 90°.

3. The high-precision PC convex hull product flat die-cutting method according to claim 2, characterized in that: The angle of the shaping punch is 65°.

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