Cushion pad machining method and circular knife machine

Abstract

The invention relates to the technical field of cushion pad machining, in particular to a cushion pad machining method and a circular knife machine. The method comprises the steps that a plurality of cushion pad sheets are connected in an end-to-end lap joint mode through adhesive tapes, and a continuous cushion pad belt is formed; then winding the cushion tape into a roll, and loading the roll on a discharging roller of a circular knife machine; cutting the double-faced adhesive tape by a circular knife machine to enable one end of the double-faced adhesive tape to have a tearing hand; and cutting the cushion band by the circular knife machine to obtain a cushion sheet material with a required shape, double-faced adhesive tape is pasted on the upper surface and the lower surface of the buffer gasket material through a circular knife machine, and a tearing hand of the double-faced adhesive tape is exposed at the edge of the buffer gasket material. According to the invention, the buffer gasket material can be processed in the circular knife machine.

Description

Technical Field

[0001] This invention relates to the field of cushioning pad processing technology, and in particular to a cushioning pad processing method and a circular cutter. Background Technology

[0002] During the charging and discharging process of electric vehicle batteries, the cells expand and contract. To mitigate this, polypropylene foam cushioning pads are typically bonded between adjacent cells. This foam material is usually manufactured using a cavity foaming process, and suppliers generally provide it in sheet form. This necessitates that traditional cushioning pad processing involve sequential steps using equipment such as an indentation machine, a coating machine, and a film-changing machine to achieve the desired result. Figure 1 The buffer pads shown not only have low production efficiency, but also make it difficult to achieve continuous automated production. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a circular cutter machine for processing cushioning pads, which can process cushioning pad sheets in the circular cutter machine.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a method for processing a cushioning pad, comprising: Step S1: Connect multiple cushioning pad sheets end to end with tape to form a continuous cushioning pad strip; Step S2: Wind the buffer pad into a roll and load it onto the feeding roller of the circular knife machine; Step S3: Cut the double-sided tape with a rotary cutter so that one end has a tear handle; Step S4: The cushioning pad strip is cut by the circular cutter to obtain a cushioning pad sheet of the desired shape; Step S5: Double-sided tape is applied to the upper and lower surfaces of the cushioning pad sheet using a rotary knife machine, with the tear handle of the double-sided tape exposed at the edge of the cushioning pad sheet.

[0005] To solve the above-mentioned technical problems, another technical solution adopted by the present invention is: a circular knife machine, comprising a first double-sided adhesive processing area, a buffer pad processing area and a second double-sided adhesive processing area arranged sequentially along the conveying direction of the circular knife machine; The buffer pad processing area includes a feeding roller, a first circular cutter roller, a first waste discharge roller, and a first bottom film roller group. The feeding roller is used to load the buffer pad tape wound into a roll. The buffer pad tape is formed by connecting multiple buffer pad sheets by overlapping the ends of the tape. The feeding roller conveys the buffer pad sheets toward the first circular cutter roller. The first waste discharge roller is located at the discharge end of the first circular cutter roller. The first bottom film roller group is used to convey the bottom film laid on the lower surface of the buffer pad sheets toward the feed end of the first circular cutter roller. The first double-sided adhesive processing area and the second double-sided adhesive processing area are used to cut and paste the double-sided adhesive onto the upper and lower surfaces of the cushioning pad sheet.

[0006] The beneficial effects of this invention are as follows: by connecting multiple cushioning pad sheets end-to-end with adhesive tape to form a continuous cushioning pad strip, it can be loaded onto the feed roller of a rotary cutter in roll form. The rotary cutter roller on the rotary cutter cuts double-sided adhesive into tear-off pieces and attaches them to the upper and lower surfaces of the similarly cut cushioning pad sheets, thereby achieving automated and continuous production of cushioning pad sheets. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the buffer pad structure proposed in this invention; Figure 2 This is a schematic diagram of the structure of a circular knife machine proposed in this invention; Figure 3 This is a schematic diagram of the buffer pad processing area structure of a circular knife machine proposed in this invention; Figure 4 This is a schematic diagram of the first double-sided adhesive processing area of ​​a circular knife machine proposed in this invention; Figure 5 This is a schematic diagram of the second double-sided adhesive processing area of ​​a circular knife machine proposed in this invention; Label Explanation: 1. First double-sided adhesive processing area; 11. First double-sided adhesive discharge roller; 12. First release film discharge roller; 13. Second circular cutter roller; 14. Third circular cutter roller; 15. Second waste discharge roller; 151. Second preceding waste discharge roller; 152. Second following waste discharge roller; 16. Second bottom film discharge roller; 17. Second bottom film collection roller; 18. Third bottom film discharge roller; 19. Third bottom film collection roller; 2. Buffer pad processing area; 21. Feeding roller; 22. First circular cutter roller; 23. First waste discharge roller; 231. First preceding waste discharge roller; 232. First following waste discharge roller; 24. First bottom film discharge roller; 25. First bottom film collection roller; 3. Second double-sided adhesive processing area; 31. Second double-sided adhesive discharge roller; 32. Second release film discharge roller; 33. Fourth circular knife roller; 34. Fifth circular knife roller; 35. Third waste discharge roller; 351. Third preceding waste discharge roller; 352. Third following waste discharge roller; 36. Fourth bottom film discharge roller; 37. Fourth bottom film collection roller; 38. Fifth bottom film discharge roller; 39. Fifth bottom film collection roller; 4. Cushioning pad sheet; 5. Double-sided tape; 51. Tear handle; 6. Tape feeding roller; 7. Tape taking roller. Detailed Implementation

[0008] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0009] The present invention provides a method for processing a cushioning pad, comprising step S1: connecting multiple cushioning pad sheets 4 end to end with adhesive tape to form a continuous cushioning pad strip; Step S2: Wind the buffer pad into a roll and load it onto the feeding roller 21 of the circular knife machine; Step S3: Cut the double-sided tape 5 with a circular knife machine so that one end of 5 has a tear handle 51; Step S4: The cushioning pad strip is cut by the circular cutter to obtain the cushioning pad sheet 4 of the desired shape; Step S5: The double-sided tape 5 is attached to the upper and lower surfaces of the cushioning pad sheet 4 by a rotary knife machine, and the tear handle 51 of the double-sided tape 5 is exposed at the edge of the cushioning pad sheet 4.

[0010] Working principle: By connecting multiple cushioning pad sheets 4 end to end with adhesive tape to form a continuous cushioning pad strip, it can be installed in roll form on the feeding roller 21 of the rotary cutter. Then, the rotary cutter roller on the rotary cutter can be used to cut the double-sided adhesive tape 5 into tear strips 51, and attach them to the upper and lower surfaces of the cushioning pad sheets 4, which have also been cut by the rotary cutter roller, to achieve automated and continuous production of the cushioning pad sheets 4.

[0011] In some embodiments, in step S1, a gap of 0 mm to 5 mm is left between the overlapping cushioning sheets 4. By limiting the distance between the overlapping cushioning sheets 4, it is ensured that the tape stably overlaps the front and rear cushioning sheets 4.

[0012] In some implementations, please refer to Figure 1 As shown, in step S5, the tear handles 51 of the double-sided adhesive 5 on the upper and lower surfaces of the cushioning pad sheet 4 are located at both ends of the cushioning pad sheet 4. By staggering the positions of the tear handles 51 of the double-sided adhesive 5 on the upper and lower surfaces of the cushioning pad sheet 4, it is possible to avoid interference from the tear handles 51 of the double-sided adhesive 5 being pasted first when the double-sided adhesive 5 is pasted sequentially by the rotary knife machine, thus preventing interference with the subsequent bonding of the double-sided adhesive 5 to the cushioning pad sheet 4.

[0013] Please refer to Figure 2 and Figure 3As shown, the present invention discloses a rotary cutter, comprising a first double-sided adhesive processing area 1, a buffer pad processing area 2, and a second double-sided adhesive processing area 3 arranged sequentially along the conveying direction of the rotary cutter. The buffer pad processing area 2 includes a feeding roller 21, a first rotary cutter roller 22, a first waste discharge roller 23, and a first bottom film roller group. The feeding roller 21 is used to load a wound buffer pad tape, which is formed by connecting multiple buffer pad sheets by overlapping the ends of the tape. The feeding roller 21 conveys the buffer pad sheet towards the first rotary cutter roller 22. The first waste discharge roller 23 is located at the discharge end of the first rotary cutter roller 22. The first bottom film roller group is used to convey a bottom film laid on the lower surface of the buffer pad sheet towards the feed end of the first rotary cutter roller 22. The first double-sided adhesive processing area 1 and the second double-sided adhesive processing area 3 are used to cut the double-sided adhesive pasted on the upper and lower surfaces of the buffer pad sheet.

[0014] Working principle: Multiple buffer pad sheets 4 are connected end-to-end with tape to form a continuous buffer pad belt, which can be installed in roll form on the feed roller 21 of the circular cutter. The feed roller 21 feeds the buffer pad sheets 4 on the buffer pad belt to the first circular cutter roller 22. At the same time, the first bottom film roller group lays the bottom film under the buffer pad sheets 4 and feeds it into the first circular cutter roller 22. The first circular cutter roller 22 cuts the buffer pad sheets 4 into the required shape, so that the front and rear buffer pad sheets 4 are separated. In this process, the bottom film prevents the blades on the first circular cutter roller 22 from directly contacting the steel roller surface supporting the buffer pad sheets 4, thereby improving the service life of the first circular cutter roller 22. At the same time, the bottom film allows the buffer pad sheets 4 to continue to move forward in the circular cutter, so that the buffer pad sheets 4 and the cut waste can be fed into the first waste roller 23, where the first waste roller 23 carries away the cut waste from the bottom film. The first double-sided adhesive processing area 1 sends the cut double-sided adhesive 5 to the cushioning pad processing area 2, so that the double-sided adhesive 5 output from the first double-sided adhesive processing area 1 is adhered to the cushioning pad sheet 4 cut in the cushioning pad processing area 2, obtaining a semi-finished cushioning pad. Finally, the semi-finished cushioning pad enters the second double-sided adhesive processing area 3, where the second double-sided adhesive processing area 3 adheres the cut double-sided adhesive 5 to the other end of the cushioning pad sheet 4 that is not covered with double-sided adhesive 5, obtaining a finished cushioning pad.

[0015] It is worth noting that the tear handles 51 of the double-sided adhesive 5 output from the second double-sided adhesive processing area 3 and the tear handles 51 of the double-sided adhesive 5 output from the first double-sided adhesive processing area 1 are located at opposite ends of the cushioning pad sheet 4. By staggering the positions of the tear handles 51 of the double-sided adhesive 5 on the upper and lower surfaces of the cushioning pad sheet 4, the tear handles 51 of the double-sided adhesive 5 already adhered to the cushioning pad sheet 4 can be prevented from interfering with the adhesion between the double-sided adhesive 5 output from the second double-sided adhesive processing area 3 and the cushioning pad sheet 4 when the double-sided adhesive 5 is applied in the second double-sided adhesive processing area 3.

[0016] In some implementations, please refer to Figure 3As shown, the first waste roller 23 includes a first pre-waste roller 231 and a first post-waste roller 232. The first pre-waste roller 231 is located on the discharge end side of the first circular cutter roller 22. After the buffer pad material 4 output by the feed roller 21 passes through the first circular cutter roller 22, the waste material of the outer ring of the buffer pad material 4 is wound up by the first pre-waste roller 231. The first post-waste roller 232 is located on the discharge end side of the first pre-waste roller 231. The waste material of the inner ring of the buffer pad material 4 is wound up by the first post-waste roller 232.

[0017] The first post-discharge roller 232 is equipped with a tape feeding roller 6 and a tape take-up roller 7. The roller surface of the first post-discharge roller 232 has protrusions. The tape output by the tape feeding roller 6 passes over the first post-discharge roller 232 and is then taken back by the tape take-up roller 7. When the buffer pad sheet 4 and the waste material in its inner ring pass through the first post-discharge roller 232, the protrusions on the first post-discharge roller 232 push the tape towards the waste material, thereby removing the waste material from the inner ring of the buffer pad sheet 4.

[0018] In some implementations, please refer to Figure 3 As shown, the first bottom film roller assembly includes a first bottom film output roller 24 and a first bottom film take-up roller 25. The first bottom film output roller 24 conveys the bottom film laid on the lower surface of the cushioning sheet 4 towards the feed end of the first circular cutter roller 22. The first bottom film take-up roller 25 is used to wind up the bottom film output from the discharge end of the first row of waste rollers 23. After passing the first row of waste rollers 23, the bottom film output by the first bottom film output roller 24 is taken back by the first bottom film take-up roller 25 to ensure that the double-sided adhesive 5 output from the first double-sided adhesive processing area 1 can be smoothly adhered to the lower surface of the cushioning sheet 4.

[0019] In some implementations, please refer to Figure 4As shown, the first double-sided adhesive processing area 1 includes a first double-sided adhesive dispensing roller 11, a first release film dispensing roller 12, a second circular cutter roller 13, a third circular cutter roller 14, a second waste discharge roller 15, and a second bottom film roller group. The first double-sided adhesive dispensing roller 11 conveys double-sided adhesive towards the second circular cutter roller 13, and the first release film dispensing roller 12 conveys the release film laid on the adhesive surface of the double-sided adhesive towards the feed end of the second circular cutter roller 13. The third circular cutter roller 14 is located on one side of the discharge end of the second circular cutter roller 13, and the second waste discharge roller 15 is located on one side of the discharge end of the third circular cutter roller 14. The second bottom film roller group conveys the bottom film laid under the release paper of the double-sided adhesive towards the feed end of the second circular cutter roller 13. The double-sided adhesive 5 is cut to a fixed length by the second circular cutter roller 13 to obtain the double-sided adhesive 5 of the desired shape. When the first double-sided adhesive discharge roller 11 outputs double-sided adhesive 5 to the second circular cutter roller 13, a release film is laid on the adhesive surface of the double-sided adhesive 5 through the first release film discharge roller 12 to prevent the double-sided adhesive 5 from sticking to the roller surfaces of the second circular cutter roller 13 and the third circular cutter roller 14. The second bottom film roller group lays the bottom film under the release paper of the double-sided adhesive 5. The bottom film prevents the blades on the second circular cutter roller 13 and the third circular cutter roller 14 from directly contacting the steel roller surface of the double-sided adhesive 5, thereby improving the service life of the second circular cutter roller 13 and the third circular cutter roller 14. At the same time, the bottom film allows the segments of double-sided adhesive 5 to continue moving forward in the circular cutter and be fed to the second row of waste rollers 15, where the second row of waste rollers 15 carries away the cut waste material from the bottom film.

[0020] In some implementations, please refer to Figure 4 As shown, the second waste roller 15 includes a second preceding waste roller 151 and a second following waste roller 152. The second preceding waste roller 151 is located on the discharge end side of the third circular cutter roller 14 and is used to wind up the release film on the adhesive surface of the double-sided adhesive 5. The second following waste roller 152 is located on the discharge end side of the second preceding waste roller 151 and is used to wind up the waste material around the double-sided adhesive 5.

[0021] Among them, a tape feeding roller 6 and a tape receiving roller 7 are provided near the second pre-discharge roller 151 and the second post-discharge roller 152. The roller surfaces of the second pre-discharge roller 151 and the second post-discharge roller 152 are provided with protrusions. The tape output by the tape feeding roller 6 passes around the discharge roller and is then taken back by the tape receiving roller 7.

[0022] In some implementations, please refer to Figure 1 and Figure 4As shown, the second bottom film roller group includes a second bottom film discharge roller 16, a second bottom film take-up roller 17, a third bottom film discharge roller 18, and a third bottom film take-up roller 19. The second bottom film discharge roller 16 conveys the bottom film laid under the release paper of the double-sided adhesive 5 towards the feed end of the second circular cutter roller 13. The second bottom film take-up roller 17 is used to wind up the bottom film output from the discharge end of the second circular cutter roller 13. The third bottom film discharge roller 18 conveys the bottom film laid under the release paper of the double-sided adhesive towards the feed end of the third circular cutter roller 14. The third bottom film take-up roller 19 is located at the discharge end of the circular cutter machine. The bottom film output from the second bottom film output roller 16 passes through the second circular cutter roller 13 and is then retrieved by the second bottom film receiving roller 17. At the same time, the formed double-sided adhesive 5 falls onto the bottom film output from the third bottom film output roller 18 and enters the third circular cutter roller 14 for cutting. After the buffer pad 4 has completed the adhesion of the double-sided adhesive 5 on the upper and lower surfaces, the bottom film output from the third bottom film output roller 18 is retrieved by the third bottom film receiving roller 19.

[0023] In some implementations, please refer to Figure 5 As shown, the second double-sided adhesive processing area 3 includes a second double-sided adhesive feeding roller 31, a second release film feeding roller 32, a fourth circular cutter roller 33, a fifth circular cutter roller 34, a third waste roller 35, and a third bottom film roller group. The second double-sided adhesive feeding roller 31 conveys double-sided adhesive towards the fourth circular cutter roller 33, and the second release film feeding roller 32 conveys the release film laid on the adhesive surface of the double-sided adhesive towards the feed end of the fourth circular cutter roller 33. The fifth circular cutter roller 34 is located on one side of the discharge end of the fourth circular cutter roller 33, and the third waste roller 35 is located on one side of the discharge end of the fifth circular cutter roller 34. The third bottom film roller group conveys the bottom film laid under the release paper of the double-sided adhesive towards the feed end of the fourth circular cutter roller 33. The double-sided adhesive 5 is cut to a fixed length by the fourth circular cutter roller 33 and then trimmed by the fifth circular cutter roller 34 to obtain the double-sided adhesive 5 of the desired shape. When the second double-sided adhesive discharge roller 31 outputs double-sided adhesive 5 to the fourth circular cutter roller 33, a release film is laid on the adhesive surface of the double-sided adhesive 5 through the second release film discharge roller 32 to prevent the double-sided adhesive 5 from sticking to the roller surfaces of the fourth and fifth circular cutter rollers 33 and 34. The bottom film is laid under the release paper of the double-sided adhesive 5 through the third bottom film roller group. The bottom film prevents the blades on the fourth and fifth circular cutter rollers 33 and 34 from directly contacting the steel roller surface of the double-sided adhesive 5, thereby improving the service life of the fourth and fifth circular cutter rollers 33 and 34. At the same time, the bottom film allows the segments of double-sided adhesive 5 to continue moving forward in the circular cutter and be fed to the third row of waste rollers 35, where the waste material cut off is carried away from the bottom film.

[0024] In some implementations, please refer to Figure 5As shown, the third waste roller 35 includes a third pre-waste roller 351 and a third post-waste roller 352. The third pre-waste roller 351 is located on the discharge end side of the fifth circular cutter roller 34 and is used to wind up the release film on the adhesive surface of the double-sided adhesive 5. The third post-waste roller 352 is located on the discharge end side of the third pre-waste roller 351 and is used to wind up the waste material around the double-sided adhesive 5.

[0025] Among them, a tape feeding roller 6 and a tape receiving roller 7 are provided near the third pre-discharge roller 351 and the third post-discharge roller 352. The roller surfaces of the third pre-discharge roller 351 and the third post-discharge roller 352 are provided with protrusions. The tape output by the tape feeding roller 6 passes around the discharge roller and is then taken back by the tape receiving roller 7.

[0026] In some implementations, please refer to Figure 5 As shown, the third bottom film roller group includes a fourth bottom film discharge roller 36, a fourth bottom film take-up roller 37, a fifth bottom film discharge roller 38, and a fifth bottom film take-up roller 39. The fourth bottom film discharge roller 36 conveys the bottom film laid under the release paper of the double-sided adhesive towards the feed end of the fourth circular knife roller 33. The fourth bottom film take-up roller 37 is used to wind up the bottom film output from the discharge end of the fourth circular knife roller 33. The fifth bottom film discharge roller 38 conveys the bottom film laid under the release paper of the double-sided adhesive towards the feed end of the fifth circular knife roller 34. The fifth bottom film take-up roller 39 is used to wind up the bottom film output from the discharge end of the third waste roller 35. The bottom film output from the fourth bottom film output roller 36 passes through the fourth circular cutter roller 33 and is then collected by the fourth bottom film receiving roller 37. At the same time, the formed double-sided adhesive 5 falls onto the bottom film output from the fifth bottom film output roller 38 and enters the fifth circular cutter roller 34 for cutting. After the double-sided adhesive 5 passes through the third row of waste rollers 35, it is collected by the fifth bottom film receiving roller 39, so that the double-sided adhesive 5 can be adhered to the upper surface of the cushioning pad sheet 4.

[0027] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for processing a cushioning pad, characterized in that: include Step S1: Connect multiple cushioning pad sheets end to end with tape to form a continuous cushioning pad strip; Step S2: Wind the buffer pad into a roll and load it onto the feeding roller of the circular knife machine; Step S3: Cut the double-sided tape with a rotary cutter so that one end has a tear handle; Step S4: The cushioning pad strip is cut by the circular cutter to obtain a cushioning pad sheet of the desired shape; Step S5: Double-sided tape is applied to the upper and lower surfaces of the cushioning pad sheet using a rotary knife machine, with the tear handle of the double-sided tape exposed at the edge of the cushioning pad sheet.

2. The method for processing a buffer pad according to claim 1, characterized in that: In step S1, a gap of 0mm to 5mm is left between the overlapping cushioning sheets.

3. The method for processing a buffer pad according to claim 1, characterized in that: In step S5, the tear handles of the double-sided adhesive on the upper and lower surfaces of the cushioning pad are located at both ends of the cushioning pad.

4. A circular knife machine, characterized in that: It includes a first double-sided adhesive processing area, a buffer pad processing area, and a second double-sided adhesive processing area arranged sequentially along the conveying direction of the rotary knife machine; The buffer pad processing area includes a feeding roller, a first circular cutter roller, a first waste discharge roller, and a first bottom film roller group. The feeding roller is used to load the buffer pad tape wound into a roll. The buffer pad tape is formed by connecting multiple buffer pad sheets by overlapping the ends of the tape. The feeding roller conveys the buffer pad sheets toward the first circular cutter roller. The first waste discharge roller is located at the discharge end of the first circular cutter roller. The first bottom film roller group is used to convey the bottom film laid on the lower surface of the buffer pad sheets toward the feed end of the first circular cutter roller. The first double-sided adhesive processing area and the second double-sided adhesive processing area are used to cut and paste the double-sided adhesive onto the upper and lower surfaces of the cushioning pad sheet.

5. The circular knife machine according to claim 4, characterized in that: The first bottom film roller assembly includes a first bottom film discharge roller and a first bottom film take-up roller. The first bottom film discharge roller conveys the bottom film laid on the lower surface of the buffer pad sheet toward the feed end of the first circular cutter roller. The first bottom film take-up roller is used to take up the bottom film output from the discharge end of the first waste roller.

6. The circular knife machine according to claim 4, characterized in that: The first double-sided adhesive processing area includes a first double-sided adhesive dispensing roller, a first release film dispensing roller, a second circular knife roller, a third circular knife roller, a second waste discharge roller, and a second bottom film roller assembly. The first double-sided adhesive dispensing roller conveys double-sided adhesive toward the second circular knife roller, and the first release film dispensing roller conveys the release film laid on the adhesive surface of the double-sided adhesive toward the feed end of the second circular knife roller. The third circular knife roller is located on one side of the discharge end of the second circular knife roller, and the second waste discharge roller is located on one side of the discharge end of the third circular knife roller. The second bottom film roller assembly conveys the bottom film laid under the release paper of the double-sided adhesive toward the feed end of the second circular knife roller.

7. The circular knife machine according to claim 6, characterized in that: The second bottom film roller assembly includes a second bottom film discharge roller, a second bottom film take-up roller, a third bottom film discharge roller, and a third bottom film take-up roller. The second bottom film discharge roller conveys the bottom film laid under the release paper of the double-sided adhesive towards the feed end of the second circular knife roller. The second bottom film take-up roller is used to wind up the bottom film output from the discharge end of the second circular knife roller. The third bottom film discharge roller conveys the bottom film laid under the release paper of the double-sided adhesive towards the feed end of the third circular cutter roller, and the third bottom film take-up roller is located at the discharge end of the circular cutter.

8. The circular knife machine according to claim 4, characterized in that: The second double-sided adhesive processing area includes a second double-sided adhesive discharge roller, a second release film discharge roller, a fourth circular knife roller, a fifth circular knife roller, a third waste roller, and a third bottom film roller group. The second double-sided adhesive discharge roller conveys double-sided adhesive toward the fourth circular knife roller, and the second release film discharge roller conveys the release film laid on the adhesive surface of the double-sided adhesive toward the feed end of the fourth circular knife roller. The fifth circular knife roller is located on one side of the discharge end of the fourth circular knife roller, the third waste roller is located on one side of the discharge end of the fifth circular knife roller, and the third bottom film roller group conveys the bottom film laid under the release paper of the double-sided adhesive toward the feed end of the fourth circular knife roller.

9. The circular knife machine according to claim 8, characterized in that: The third bottom film roller group includes a fourth bottom film discharge roller, a fourth bottom film take-up roller, a fifth bottom film discharge roller, and a fifth bottom film take-up roller; the fourth bottom film discharge roller conveys the bottom film laid under the release paper of the double-sided adhesive towards the feed end of the fourth circular knife roller, and the fourth bottom film take-up roller is used to wind up the bottom film output from the discharge end of the fourth circular knife roller; The fifth bottom film discharge roller conveys the bottom film laid under the release paper of the double-sided adhesive towards the feed end of the fifth circular knife roller, and the fifth bottom film take-up roller is used to take up the bottom film output from the discharge end of the third row of waste rollers.

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