Die cutting tool, graphite die cutting process and graphite product

Abstract

The application discloses a die cutting tool, a graphite die cutting process and a graphite product, wherein the die cutting tool comprises a tool base body, the tool base body is provided with a cutting side and a mounting side in opposite arrangement, a graphite cutting tool body is arranged on the cutting side, the graphite cutting tool body is provided with a graphite cutting edge, a film cutting tool body is arranged on the cutting side, the film cutting tool body is provided with a plurality of film cutting edges arranged at intervals, and the depth of the film cutting edge is greater than that of the graphite cutting edge. The technical scheme has the advantages that the yield of the graphite product can be improved.

Description

Technical Field

[0001] This invention relates to the field of graphite die-cutting technology, and in particular to a die-cutting tool, a graphite die-cutting process, and graphite products. Background Technology

[0002] During the die-cutting production of synthetic graphite film products, due to the special edge-wrapping structure of the graphite film, a low-adhesion protective film needs to be applied to both sides of the graphite in the flat plate small-hole fitting process. This ensures that the fitting holes remain on the main material strip after the graphite body is die-cut for subsequent die-cutting stations. However, this creates a risk that one layer of the protective film may adhere to the finished graphite, resulting in a defective graphite product.

[0003] It is worth noting that the applicant believes that the background art is only presented to address the technical problem of this application and is not equivalent to the prior art. Summary of the Invention

[0004] The main objective of this invention is to provide a die-cutting tool designed to improve product yield.

[0005] To achieve the above objectives, the present invention provides a die-cutting tool comprising:

[0006] A blade base having a cutting side and a mounting side disposed opposite to each other;

[0007] A graphite cutting blade, the graphite cutting blade being located on the cutting side, the graphite cutting blade having a graphite cutting edge;

[0008] A film cutting blade body is located on the cutting side. The film cutting blade body includes a plurality of film cutting blades arranged at intervals, and the depth of the film cutting blades is greater than the depth of the graphite cutting blades.

[0009] Optionally, the cutting blade is elongated, and multiple cutting blades are located at one end of the graphite cutting blade body and extend along the width direction of the graphite cutting blade body.

[0010] Optionally, the length of the cutting blade arrangement is greater than the width of the graphite cutting blade.

[0011] Optionally, the depth of the film-cutting blade is 1.95–2.05 mm; and / or, the depth of the graphite-cutting blade is 1.92–1.93 mm.

[0012] Optionally, the number of graphite cutting blades is two, and the two graphite cutting blades are arranged along the length direction of the die-cutting tool.

[0013] Optionally, the number of the cutting blades is two, and the two graphite cutting blades are located within the area enclosed by the two cutting blades.

[0014] Optionally, a positioning post is provided on the cutting side of the blade body, and the positioning post is located on the side of the film cutting blade body opposite to the graphite cutting blade body.

[0015] This application further proposes a graphite product formed by cutting with a die-cutting tool.

[0016] The die-cutting tools include:

[0017] A blade base having a cutting side and a mounting side disposed opposite to each other;

[0018] A graphite cutting blade, the graphite cutting blade being located on the cutting side, the graphite cutting blade having a graphite cutting edge;

[0019] A film cutting blade body is located on the cutting side. The film cutting blade body includes a plurality of film cutting blades arranged at intervals, and the depth of the film cutting blades is greater than the depth of the graphite cutting blades.

[0020] This application further proposes a graphite die-cutting process, including the following steps:

[0021] The graphite is rolled; the graphite includes a first side and a second side disposed opposite to each other, the first side including positioning areas at both ends and a cutting area in the middle;

[0022] A protective film is attached to the first side;

[0023] A die-cutting tool is used to cut graphite and a protective film from a second side. The die-cutting tool includes a graphite-cutting blade and a film-cutting blade. The graphite-cutting blade has a graphite-cutting edge for cutting graphite. The film-cutting blade includes a plurality of spaced-apart film-cutting edges. The depth of the film-cutting edges is greater than the depth of the graphite-cutting edges. The film-cutting edges are used to cut through the graphite and the protective film to form multiple cuts on the protective film to create discontinuous tangent lines, allowing the protective film to be torn from the cutting position.

[0024] Graphite border material;

[0025] Double-sided adhesive is applied to the second side of the graphite.

[0026] Remove waste material from the middle area of ​​the protective film;

[0027] Apply single-sided adhesive to the first side;

[0028] Die-cut graphite film outer frame;

[0029] Remove the waste material from the frame.

[0030] This application further proposes a graphite die-cutting process, including the following steps:

[0031] Graphite is rolled;

[0032] The graphite includes a first side and a second side disposed opposite to each other, the first side including positioning areas at both ends and a cutting area in the middle;

[0033] A protective film is attached to the second side, and a limiting film is attached to the connection between the positioning area and the cutting area on the first side.

[0034] A die-cutting tool is used to cut graphite and a protective film; wherein the die-cutting tool includes a graphite-cutting blade and a film-cutting blade, the graphite-cutting blade having a graphite-cutting edge for cutting graphite; the film-cutting edge and the graphite-cutting edge of the film-cutting blade are of similar depth, the graphite-cutting edge cuts graphite, and the film-cutting edge is used to cut the graphite and the protective film.

[0035] Graphite border material;

[0036] Apply double-sided tape to the side of the graphite that is opposite to the protective film.

[0037] Remove waste material from the middle area of ​​the protective film;

[0038] Apply single-sided adhesive to the first side;

[0039] Die-cut graphite film outer frame;

[0040] Remove the waste material from the frame.

[0041] In this invention, the die-cutting tool is configured as a protective cutting blade and a graphite cutting blade, with the depth of the graphite cutting edge being greater than that of the graphite cutting edge. This ensures that the graphite cutting edge cuts the graphite material into shape without cutting the protective film. Simultaneously, while the cutting blade cuts the graphite, it also creates discontinuous tangent lines on the protective film formed by multiple cuts. This ensures the continuity of the cut ends of the protective film at the cutting position, maintaining the relative position of the cut graphite pieces, which is beneficial for subsequent processing positioning. At the same time, it makes the cut position easily torn, facilitating subsequent film removal. Compared to the original method using two layers of protective film, this embodiment reduces material usage, saves raw materials, and lowers production costs. It also simplifies the die-cutting process, improving production efficiency. Furthermore, it avoids the phenomenon of incomplete protective film removal during the demolding process, thus improving the quality of the graphite material. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the structure of an embodiment of the die-cutting tool of the present invention;

[0044] Figure 2 This is a schematic diagram of the structure of graphite material;

[0045] Figure 3 This is a schematic diagram of the process of punching graphite with the die-cutting tool of the present invention;

[0046] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0047] Explanation of icon numbers:

[0048] label name label name 100 Graphite materials 110 Cutting area 120 Location area 130 sleeve hole 150 Tangent line 200 Die-cutting tools 210 knife base 220 Set post 230 Membrane cutting blade body 250 Graphite cutting tool body 300 Protective film

[0049] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0052] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0053] This invention mainly proposes a die-cutting tool 200, which is mainly used to cut graphite material 100 and is applied in the forming process of graphite material 100.

[0054] The following will mainly describe the specific structure of the die-cutting tool 200.

[0055] Reference Figures 1 to 4 In this embodiment of the invention, the die-cutting tool 200 includes:

[0056] The blade base 210 has a cutting side and a mounting side disposed opposite to each other.

[0057] A graphite cutting blade 250 is located on the cutting side and has a graphite cutting edge.

[0058] A film cutting blade body 230 is located on the cutting side. The film cutting blade body 230 includes a plurality of film cutting blades arranged at intervals. The depth of the film cutting blades is greater than the depth of the graphite cutting blades.

[0059] Specifically, in this embodiment, the blade base 210 can take many forms, and its overall shape can be cuboid, cube, etc. In the following example, a cuboid shape will be used for illustration. The mounting side of the blade base 210 is connected to a drive mechanism, which drives the blade base 210 to move up and down. The cutting side has a die-cutting blade, which can be integrally formed with the blade base 210 or detachably mounted on the blade base 210. The die-cutting blade includes a film-cutting blade 230 and a graphite-cutting blade 250. The film-cutting blade 230 is used to cut graphite and the protective film 300, while the graphite-cutting blade 250 is only used to cut graphite. The graphite-cutting blade is designed according to the shape of the graphite product. After cutting the graphite, the graphite-cutting blade forms the shape of the graphite product. While cutting the graphite, the film-cutting blade also cuts intermittent cutting lines on the protective film 300. The cutting lines maintain the continuity of each part of the protective film 300, and at the same time, the protective film 300 can be easily torn along the cutting lines. The protective film 300 can take many forms, such as low-viscosity silicone oil calendered film, acrylic protective film 300, silicone protective film 300, PU protective film 300, etc.

[0060] Specifically, the graphite includes a first side and a second side disposed opposite to each other. The first side includes positioning areas 120 at both ends and a cutting area 110 in the middle. A protective film 300 is attached to the first side of the graphite. The depth of the cutting blade is greater than the depth of the graphite cutting blade, resulting in several spaced cuts on the protective film 300, with a small amount of protective film 300 connecting adjacent cuts. The protective film 300 can be easily separated when subjected to external force in the middle and end regions.

[0061] In this embodiment, by setting the die-cutting tool 200 as a protective cutting blade 230 and a graphite cutting blade 250, and setting the depth of the graphite cutting blade to be greater than the depth of the graphite cutting blade, the graphite cutting blade can cut the graphite material 100 into shape without cutting the protective film 300. At the same time, while the cutting blade 230 cuts the graphite, it also cuts discontinuous dividing lines 150 formed by multiple cuts on the protective film 300. This ensures the continuity of the cut ends of the protective film 300 at the cutting position, allowing the cut graphite to maintain a relative positional relationship, which is beneficial for subsequent processing positioning. At the same time, it makes the cut position very easy to tear, which is beneficial for subsequent film removal. Compared with the original use of two layers of protective film 300, the technical solution of this embodiment reduces the use of materials, saves raw materials, and reduces production costs. At the same time, it simplifies the die-cutting process steps and improves production efficiency. It also avoids the phenomenon of the protective film 300 not being completely removed during the demolding process, which is beneficial to improving the quality of the graphite material 100.

[0062] In some embodiments, to improve the structural compactness of the cutting tool, the film-cutting blades are elongated, with multiple film-cutting blades located at one end of the graphite cutting blade body 250 and extending along the width direction of the graphite cutting blade body 250. In this embodiment, by arranging multiple film-cutting blades along the width direction of the graphite cutting blade body 250, the film-cutting blades can ensure the separation of the protective film 300 attached to the central graphite material 100 and the protective film 300 attached to the graphite waste during cutting protection.

[0063] In some embodiments, to ensure that the protective film 300 covering the cut graphite product can be completely detached, the length of the film-cutting blades is greater than the width of the graphite-cutting blades. By making the length of the film-cutting blades greater than the width of the graphite blades, the graphite product cut by the graphite blades can be completely detached from the graphite raw material, which is beneficial for the removal of the graphite waste frame and the collection of the graphite product.

[0064] The depth of the cutting blade for the film and the cutting blade for the graphite should not be too deep or too short. The depth of the cutting blade for the film is 1.95–2.05 mm; and / or, the depth of the cutting blade for the graphite is 1.92–1.93 mm. The graphite material 100 produced and cut in this application is very thin, so the depth of both the cutting blade for the film and the cutting blade for the graphite should not be too deep. It is worth noting that when cutting the graphite material 100, the blade enters from the second side of the graphite and cuts towards the first side. This ensures that the graphite is completely cut off and also avoids the complete cutting off of the protective film 300.

[0065] In some embodiments, to improve production efficiency, the number of graphite-cutting blades is two, and the two graphite-cutting blades are arranged along the length direction of the die-cutting tool 200. In this embodiment, the two graphite-cutting blades are symmetrically arranged with respect to the cross-section of the die-cutting tool 200. This not only improves the structural compactness and utilization rate of the die-cutting tool 200, but also improves the die-cutting efficiency of graphite and the production efficiency of graphite products.

[0066] In some embodiments, there are two cutting blades 230, and the two graphite cutting edges are located within the area enclosed by the two cutting edges. By placing the cutting blades 230 at both ends of the two graphite cutting edges, when cutting the graphite material 100, the middle portion used to form the graphite product after cutting can be completely separated from the graphite material 100 at both ends, which is beneficial for removing edge waste.

[0067] In some embodiments, to improve the cutting accuracy of the die-cutting tool 200 and the subsequent processing accuracy of the graphite material 100, a positioning post 220 is provided on the cutting side of the tool base 210. The positioning post 220 is located on the side of the die-cutting tool body 230 opposite to the tool body that cuts graphite. During the die-cutting process of the graphite material 100, the positioning post 220 punches a positioning hole 130 in the positioning area 120. The setting of the positioning hole 130 is beneficial to the positioning of the graphite material 100 in the processing technology and to adjusting the processing accuracy of the graphite material 100.

[0068] This application further proposes a graphite product formed by cutting with a die-cutting tool 200. The specific structure of the die-cutting tool 200 is as described in the above embodiments. Since this graphite product adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated further here.

[0069] This application further proposes a graphite die-cutting process, including the following steps:

[0070] The graphite is rolled; the graphite includes a first side and a second side disposed opposite to each other, the first side including a positioning area 120 at both ends and a cutting area 110 in the middle;

[0071] A protective film 300 is attached to the first side.

[0072] A die-cutting tool 200 is used to cut graphite and protective film 300 from a second side. The die-cutting tool 200 includes a graphite-cutting blade 250 and a film-cutting blade 230. The graphite-cutting blade 250 has a graphite-cutting edge for cutting graphite. The film-cutting blade 230 includes a plurality of spaced-apart film-cutting edges. The depth of the film-cutting edges is greater than the depth of the graphite-cutting edges. The film-cutting edges are used to cut through the graphite and protective film 300 to form multiple cuts on the protective film 300 to form discontinuous dividing lines 150, so that the protective film 300 can be torn from the cutting position.

[0073] Graphite border material;

[0074] Double-sided adhesive is applied to the second side of the graphite.

[0075] Remove the waste material from the middle area of ​​the protective film 300;

[0076] Apply single-sided adhesive to the first side.

[0077] Specifically, in this embodiment, the calendered graphite is in the form of a very thin sheet with relatively large surfaces, namely a first side and a second side. For ease of description, the first side is defined as including three regions: positioning areas 120 at both ends and a cutting area 110 in the middle. A protective film 300 is attached to the first side of the calendered graphite material 100, covering the three regions of the entire first side. A die-cutting tool 200 is used to punch the graphite material 100 from the second side. After punching, the positioning areas 120 at both ends and the cutting area 110 in the middle separate, and the three parts are kept in relative position by the protective film 300. The dividing lines 150 on the protective film 300 make it easy for the three parts to remain connected while being easy to tear. After punching, the border material around the graphite product is discharged. During the discharge process, due to the effect of the protective film 300, the graphite product in the middle and the positioning areas 120 at both ends maintain their positional relationship. Double-sided tape is applied to the second side, covering the entire second side and connecting the two ends and the middle of the die-cut graphite material 100. The protective film 300 on the first side is removed, at least the protective film 300 in the middle area, or it can be completely removed. During this process, the double-sided tape ensures that the three parts of the die-cut graphite material 100 remain connected. Single-sided tape is then applied to the middle area or the entire first side. The graphite film frame is then die-cut, and the frame waste is removed, collecting the finished graphite product.

[0078] This application further proposes a graphite die-cutting process, including:

[0079] Graphite is rolled;

[0080] The graphite includes a first side and a second side disposed opposite to each other, the first side including positioning areas at both ends and a cutting area in the middle;

[0081] A protective film is attached to the first side, and a limiting film is attached to the connection between the positioning area and the cutting area on the second side.

[0082] A die-cutting tool is used to cut graphite and a protective film; wherein the die-cutting tool includes a graphite-cutting blade and a film-cutting blade, the graphite-cutting blade having a graphite-cutting edge for cutting graphite; the film-cutting edge and the graphite-cutting edge of the film-cutting blade are of similar depth, the graphite-cutting edge cuts graphite, and the film-cutting edge is used to cut the graphite and the protective film.

[0083] Graphite border material;

[0084] Remove waste material from the middle area of ​​the protective film;

[0085] Apply single-sided adhesive to the first side;

[0086] Remove the limiting membrane on the second side;

[0087] Apply double-sided tape to the second side.

[0088] Specifically, in this embodiment, the calendered graphite is in the form of a very thin sheet with relatively large surfaces, namely a first side and a second side. For ease of description, the first side is defined as comprising three regions: positioning areas at both ends and a cutting area in the middle. A protective film is attached to the first side of the calendered graphite material, covering all three regions of the first side. A limiting film is provided at the connection between the cutting area and the positioning area on the second side to maintain the relative positional relationship between the positioning area and the cutting area after punching. A die-cutting tool is used to punch the graphite material from the first side. After punching, the positioning areas at both ends and the cutting area in the middle separate, and the three parts are maintained in relative position by the limiting film.

[0089] After die-cutting, the border material around the graphite product is discharged. During the discharge process, the positional relationship between the central graphite product and the positioning areas at both ends is maintained due to the effect of the limiting film. The protective film on the first side is removed, at least the protective film in the central area can be removed, or it can be completely removed. During this process, the positional relationship can remain unchanged due to the effect of the limiting film. Single-sided adhesive is applied to the entire first side, and the single-sided adhesive should at least cover the connecting cutting area and the positioning area. The limiting film on the second side is removed, and double-sided adhesive is applied to the second side. Due to the single-sided adhesive, the three parts of the die-cut graphite material remain connected. The graphite film outer frame is then die-cut, and the border waste is discharged, collecting the finished graphite product.

[0090] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A die-cutting tool for cutting graphite with a protective film attached, the graphite comprising a first side and a second side disposed opposite each other, the protective film being attached to the first side of the graphite, characterized in that, The die-cutting tool includes: A blade base having a cutting side and a mounting side disposed opposite to each other; A graphite cutting blade, the graphite cutting blade being located on the cutting side, the graphite cutting blade having a graphite cutting edge; A film cutting blade body is located on the cutting side. The film cutting blade body includes a plurality of film cutting blades arranged at intervals. The depth of the film cutting blades is greater than the depth of the graphite cutting blade. The graphite cutting blade and the film cutting blade are used to enter from the second side of the graphite and cut towards the first side. The graphite cutting blade is used to cut the graphite, and the film cutting blade is used to cut the graphite and the protective film, so as to cut intermittent cutting lines on the protective film while cutting the graphite. The cutting blade is elongated and multiple cutting blades are located at one end of the graphite cutting blade body and extend along the width direction of the graphite cutting blade body; The length of the cutting blade arrangement is greater than the width of the graphite cutting blade.

2. The die-cutting tool as described in claim 1, characterized in that, The depth of the film-cutting blade is 1.95~2.05mm; and / or, the depth of the graphite-cutting blade is 1.92~1.93mm.

3. The die-cutting tool as described in claim 1, characterized in that, The number of graphite cutting blades is two, and the two graphite cutting blades are arranged along the length direction of the die-cutting tool.

4. The die-cutting tool as described in claim 3, characterized in that, The number of the film cutting blades is two, and the two graphite cutting blades are located in the area enclosed by the two film cutting blades.

5. The die-cutting tool according to any one of claims 1 to 4, characterized in that, The cutting side of the blade body is provided with a positioning post, which is located on the side of the film cutting blade body opposite to the graphite cutting blade body.

6. A graphite product, characterized in that, The graphite product is formed by cutting with a die-cutting tool as described in any one of claims 1 to 5.

7. A graphite die-cutting process, characterized in that, Includes the following steps: The graphite is rolled; the graphite includes a first side and a second side disposed opposite to each other, the first side including positioning areas at both ends and a cutting area in the middle; A protective film is attached to the first side. A die-cutting tool is used to cut graphite and a protective film from a second side. The die-cutting tool includes a graphite-cutting blade and a film-cutting blade. The graphite-cutting blade has graphite-cutting edges for cutting graphite. The film-cutting blade includes a plurality of spaced-apart film-cutting edges, the depth of which is greater than the depth of the graphite-cutting edges. These edges cut through the graphite and protective film to create multiple cuts in the protective film, forming discontinuous tangent lines that allow the protective film to be torn from the cut position. The film-cutting edges are elongated, with multiple edges located at one end of the graphite-cutting blade and extending along the width of the blade. The length of the arranged film-cutting edges is greater than the width of the graphite-cutting edges. Graphite border material; Double-sided adhesive is applied to the second side of the graphite. Remove waste material from the middle area of ​​the protective film; Apply single-sided adhesive to the first side; Die-cut graphite film outer frame; Remove the waste material from the frame.

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