CN-115139369-B - Method for removing waste materials of die-cut frame of graphite film and graphite film extracting knife

Abstract

The invention discloses a method for removing graphite film die-cut frame waste and a graphite film extracting knife, wherein the method comprises the steps of preparing an artificial graphite film to be die-cut, attaching a first layer of low-viscosity protective film to one side of the artificial graphite film, punching one side of the artificial graphite film far away from the first layer of low-viscosity protective film to divide the artificial graphite film into a product graphite area and a graphite frame waste area, arranging a transparent adhesive tape on one punched side of the artificial graphite film, bonding the transparent adhesive tape to the graphite frame waste area, and tearing the transparent adhesive tape to remove the graphite frame waste by using the torn transparent adhesive tape, so as to leave the product graphite area. According to the technical scheme, the cost can be reduced, the die cutting efficiency can be improved, waste materials can be reduced from entering a graphite area of a product, and the cost graphite performance can be improved.

Inventors

• Yan Zhuangwei

Assignees

• 深圳垒石热管理技术股份有限公司

Dates

Publication Date

20260508

Application Date

20210329

Claims (9)

1. 1. The method for removing the waste of the die-cut frame of the graphite film is characterized by comprising the following steps of: preparing an artificial graphite film to be die-cut; a first layer of low-viscosity protective film is attached to one side of the artificial graphite film; punching one side of the artificial graphite film far away from the first layer of low-viscosity protective film to divide the artificial graphite film into a product graphite area and a graphite frame waste area; Arranging a transparent adhesive tape on one die-cut side of the artificial graphite film, and bonding the transparent adhesive tape to the graphite frame waste area; Tearing off the transparent adhesive tape to remove the graphite frame waste by using the torn transparent adhesive tape and leave a product graphite area, wherein the bonding of the transparent adhesive tape to the graphite frame waste area specifically comprises the following steps: presetting an extraction cutter capable of being rolled into a circular shape, wherein the extraction cutter comprises an extraction block and a die cavity concavely arranged in the middle of the extraction block, the extraction block corresponds to a graphite frame waste area, and the die cavity corresponds to a product graphite area; And pressing the extraction block of the extraction knife to the graphite frame waste, and aligning the mold cavity of the extraction knife to the graphite region of the product so as to bond the transparent adhesive tape to the graphite frame waste region.
2. 2. The method for removing waste material from a die-cut frame of a graphite film as claimed in claim 1, wherein the thickness of the extraction block is 1-20mm, and the depth of the die cavity is greater than or equal to 6mm.
3. 3. The method of claim 1, wherein the plurality of cavities is divided into at least two rows or columns, and the number of cavities in each row or column is at least two.
4. 4. The method for removing waste material from die-cut frame of graphite film as claimed in claim 1, wherein the artificial graphite film comprises a graphite film and a PET layer disposed on the graphite film, and the step of die-cutting the side of the artificial graphite film far away from the first layer of low-viscosity protective film to divide the artificial graphite film into a product graphite area and a waste material area of the graphite frame comprises: Presetting an inner frame cutter, wherein the inner frame cutter is arranged corresponding to a graphite area of a product; And punching PET layers on the boundary line between the product graphite area and the graphite frame waste area by using the inner frame cutter to form a PET area and a product graphite area, wherein the product graphite area is positioned in the middle of the PET area.
5. 5. The method of claim 4, wherein the edge of the PET region exceeds the edge of the product graphite region by 0.3-1.0mm.
6. 6. The graphite film extraction knife is characterized by comprising a knife body, wherein a die cavity for containing a graphite product is concavely formed in the knife body, and an extraction block surrounding the die cavity, the extraction block is provided with an extraction surface for pressing the transparent adhesive tape on a waste material area of a graphite frame, the die cavity is provided with an opening for preventing the transparent adhesive tape from contacting the graphite area of the product, and the extraction surface is arranged on the same side as the opening.
7. 7. The graphite film extraction knife of claim 6 wherein the number of die cavities is plural, the plurality of die cavities being divided into at least two rows or columns, the number of die cavities in each row or column being at least two.
8. 8. The graphite film extraction blade as recited in claim 7, further comprising a first connecting block connecting adjacent rows or columns of said mold cavities, and a second connecting block connecting adjacent rows or columns of said mold cavities, said first connecting block interconnecting said second connecting block.
9. 9. The graphite film extraction blade of claim 7, wherein the thickness of the extraction block is 1-20mm and the depth of the mold cavity is greater than or equal to 6mm.

Description

Method for removing waste materials of die-cut frame of graphite film and graphite film extracting knife Technical Field The invention relates to the technical field of graphite die cutting, in particular to a method for removing waste materials of a graphite film die cutting frame and a graphite film extracting knife. Background At present, in the die-cutting production process of an artificially synthesized graphite film product, a graphite film needs to be die-cut according to a set shape, and frame waste is left after the die-cutting of the graphite film, so that continuous production is realized, and the frame waste needs to be discharged. Because the graphite film is soft and not resistant to pulling, the single-layer graphite material is easy to break when waste is discharged. In the prior art, a second protective film is additionally added as a reinforcing material, and the second protective film is utilized to pull away frame waste. However, the mode needs to use one layer of protective film more in the prior art, the cost is high, the die cutting production efficiency is reduced, more waste materials are generated, the probability that the waste materials finally enter the product is high, in addition, when the graphite film is die-cut, the graphite film and the first layer of protective film are die-cut together, and the waste materials after the first layer of protective film are not completely taken away by the second layer of protective film, so that the waste materials enter an interlayer structure of the graphite film product, and the performance of the product is invalid. In view of this, there is a need for further improvements in the current methods of removing waste material from the die cut border of graphite films. Disclosure of Invention In order to solve at least one of the above problems, the present invention is directed to a method for removing waste materials from a frame of a die-cut graphite film and a graphite film extracting knife. In order to achieve the purpose, the technical scheme adopted by the invention is that the method for removing the waste of the die-cut frame of the graphite film comprises the following steps: preparing an artificial graphite film to be die-cut; a first layer of low-viscosity protective film is attached to one side of the artificial graphite film; punching one side of the artificial graphite film far away from the first layer of low-viscosity protective film to divide the artificial graphite film into a product graphite area and a graphite frame waste area; Arranging a transparent adhesive tape on one die-cut side of the artificial graphite film, and bonding the transparent adhesive tape to the graphite frame waste area; tearing off the transparent adhesive tape to remove the graphite frame waste by using the torn transparent adhesive tape, and leaving a graphite area of the product. Wherein, will the transparent adhesive tape bond to graphite frame waste material district specifically includes: presetting an extraction cutter capable of being rolled into a circular shape, wherein the extraction cutter comprises an extraction block and a die cavity concavely arranged in the middle of the extraction block, the extraction block corresponds to a graphite frame waste area, and the die cavity corresponds to a product graphite area; And pressing the extraction block of the extraction knife to the graphite frame waste, and aligning the mold cavity of the extraction knife to the graphite region of the product so as to bond the transparent adhesive tape to the graphite frame waste region. Wherein the thickness of the extraction block is 1-20mm, and the depth of the mold cavity is more than or equal to 6mm. The plurality of mold cavities are divided into at least two rows, and each row of mold cavities is at least two. Wherein the artificial graphite film comprises a graphite film and a PET layer arranged on the graphite film, The utility model provides a die-cut is kept away from one side of first layer low viscosity protection film to the artificial graphite membrane, in order will the artificial graphite membrane divide into product graphite district and graphite frame waste material district, specifically includes: Presetting an inner frame cutter, wherein the inner frame cutter is arranged corresponding to a graphite area of a product; And punching PET layers on the boundary line between the product graphite area and the graphite frame waste area by using the inner frame cutter to form a PET area and a product graphite area, wherein the product graphite area is positioned in the middle of the PET area. Wherein the edge of the PET area exceeds the edge of the graphite area of the product by 0.3-1.0mm. In order to achieve the aim, the technical scheme adopted by the invention is that the graphite film extraction cutter comprises a cutter body, wherein a die cavity for containing a graphite product is concavely arranged in the cutter body, and an extracti