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, a plurality of cushion pad materials are connected in an end-to-end lap joint mode through adhesive tapes to form a continuous cushion pad belt, and the continuous cushion pad belt can be loaded on a discharging roller set of the circular knife machine in a coiled material mode to be conveyed. The double-faced adhesive tape is pasted on the upper surface and the lower surface of the buffer gasket strip through the circular knife machine, then the buffer gasket strip and the double-faced adhesive tape are cut into the needed shape through the circular knife roller on the circular knife machine, release paper is cut into the needed shape and pasted on the upper surface and the lower surface of the buffer gasket strip, and then automatic continuous production of the buffer gasket strip is achieved.

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 a traditional processing method where a laminating machine applies double-sided adhesive to the polypropylene foam, followed by an embossing machine to cut the foam into its shape, and finally a die-cutting machine to cut the release liner from the double-sided adhesive to achieve the desired shape. Figure 1 The buffer pad shown is an example. This method of production is relatively slow and 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 method for processing a buffer pad and a circular cutter machine, which enables the buffer pad sheet to be processed in the circular cutter machine to achieve continuous automatic production.

[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 group of the circular knife machine; Step S3: Double-sided adhesive is applied to the upper and lower surfaces of the cushioning pad using a rotary die-cutting machine to form a composite cushioning pad; Step S4: The composite buffer pad tape is cut by the circular cutter to obtain a buffer pad of the desired shape.

[0005] To solve the above-mentioned technical problems, another technical solution adopted by the present invention is: a circular knife machine, comprising a first release paper processing area, a buffer pad processing area and a second release paper processing area arranged sequentially along the conveying direction of the circular knife machine; The cushioning pad processing area includes a feeding roller group, a first take-up roller, a second take-up roller, a release film discharge roller, a first circular cutter roller, and a first waste discharge roller group. The feeding roller group is used to feed the composite cushioning pad tape toward the feed end of the first circular cutter roller. The first take-up roller is used to wind up the release paper on the upper surface of the composite cushioning pad tape that enters the first circular cutter roller. The release film discharge roller feeds the release film laid on the upper surface of the composite cushioning pad tape toward the feed end of the first circular cutter roller. The first waste discharge roller group is located at the discharge end of the first circular cutter roller. The second take-up roller is used to wind up the release paper on the lower surface of the cushioning pad sheet output from the discharge end of the first waste discharge roller group. The first release paper processing area is used to cut release paper and attach it to the lower surface of the cushioning sheet; The second release paper processing area is used to cut release paper and attach it to the upper surface 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 belt, it can be loaded into the feed roller assembly of a rotary cutter for conveying in roll form. The rotary cutter applies double-sided adhesive to the upper and lower surfaces of the cushioning pad belt, and then the rotary cutter rollers on the rotary cutter cut the cushioning pad sheets and double-sided adhesive to the desired shape. Additionally, the release paper is cut to the desired shape and adhered to the upper and lower surfaces of the cushioning pad, thereby achieving automated continuous production of the cushioning pad material. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the explosive structure of the buffer pad 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 release paper processing area of ​​a rotary knife machine proposed in this invention; Figure 5 This is a schematic diagram of the structure of the second release paper processing zone of a rotary knife machine proposed in this invention; Label Explanation: 1. First release paper processing area; 11. First release paper feeding roller; 12. First bottom film discharge roller; 13. Second circular knife roller; 2. Buffer pad processing area; 21. Feeding roller group; 211. First feeding roller; 212. Second feeding roller; 213. Third feeding roller; 22. First take-up roller; 23. Second take-up roller; 24. Release film discharge roller; 25. First circular knife roller; 26. First waste discharge roller group; 261. Preceding waste discharge roller; 262. Subsequent waste discharge roller; 3. Second release paper processing area; 31. Second release paper feeding roller; 32. Second bottom film feeding roller; 33. Third circular knife roller; 34. Second bottom film receiving roller; 4. Tape feeding roller; 5. Tape taking roller; 6. First bottom film taking roller; 7. Cushioning pad sheet; 8. Double-sided adhesive; 9. Release paper. 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 7 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 group 21 of the circular knife machine; Step S3: Double-sided adhesive tape 8 is applied to the upper and lower surfaces of the buffer pad using a rotary die-cutting machine to form a composite buffer pad. Step S4: The composite buffer pad tape is cut by the circular cutter to obtain a buffer pad sheet of the desired shape.

[0010] Working principle: Multiple cushioning pad sheets 7 are connected end-to-end with adhesive tape to form a continuous cushioning pad belt, which can be loaded into the feed roller group 21 of the rotary cutter for conveying in roll form. The rotary cutter attaches double-sided adhesive tape 8 to the upper and lower surfaces of the cushioning pad belt, and then the rotary cutter rollers on the rotary cutter cut the cushioning pad sheet 7 and the double-sided adhesive tape 8 to the required shape, and cuts the release paper 9 to the required shape and attaches it to the upper and lower surfaces of the cushioning pad sheet 7, thereby realizing the automated continuous production of the cushioning pad sheet 7.

[0011] In some embodiments, in step S1, a gap of 0 mm to 5 mm is left between the overlapping cushioning sheets. By limiting the distance between the overlapping cushioning sheets, it is ensured that the subsequent circular cutter roller can accurately cut each cushioning sheet.

[0012] Please refer to Figure 2 and Figure 3 As shown, the present invention provides a rotary cutter, comprising a first release paper processing area 1, a buffer pad processing area 2, and a second release paper processing area 3 arranged sequentially along the conveying direction of the rotary cutter; the buffer pad processing area 2 includes a feeding roller group 21, a first take-up roller 22, a second take-up roller 23, a release film discharge roller 24, a first rotary cutter roller 25, and a first waste discharge roller group 26; the feeding roller group 21 is used to convey a composite buffer pad tape toward the feed end of the first rotary cutter roller 25, and the first take-up roller 22 is used to wind up the upper surface of the composite buffer pad tape entering the first rotary cutter roller 25. The release paper is conveyed by the release film discharge roller 24 towards the feed end of the first circular cutter roller 25, and the release film laid on the upper surface of the composite cushioning pad belt is conveyed by the release film discharge roller 24. The first waste roller group 26 is located at the discharge end of the first circular cutter roller 25. The second take-up roller 23 is used to take up the release paper on the lower surface of the cushioning pad sheet 7 output from the discharge end of the first waste roller group 26. The first release paper processing area 1 is used to cut the release paper 9 and paste it on the lower surface of the cushioning pad sheet 7. The second release paper processing area 3 is used to cut the release paper 9 and paste it on the upper surface of the cushioning pad sheet 7.

[0013] Working principle: The composite cushioning pad is conveyed towards the first circular cutter roller 25 by the feeding roller group 21. Before entering the first circular cutter roller 25, the release paper on the upper surface of the composite cushioning pad is torn off by the first take-up roller 22, and the release film is laid on the upper surface of the composite cushioning pad by the release film discharge roller 24. The release film is used to prevent the double-sided adhesive on the upper surface of the composite cushioning pad from sticking to the first circular cutter roller 25 after it is cut. Then, the composite cushioning pad is cut by the first circular cutter roller 25, and the first circular cutter roller 25 does not cut the release paper on the lower surface of the composite cushioning pad during the cutting process. The blades on the first circular cutter roller 25 are prevented from directly contacting the surface of the steel roller supporting the composite buffer pad belt, thus improving the service life of the first circular cutter roller 25 and ensuring that the formed buffer pad sheet 7 can continue to move forward in the circular cutter machine. Then, the cut waste material is carried away by the first waste roller group 26, and then the release paper on the lower surface of the buffer pad sheet 7 is torn off by the second take-up roller 23. Finally, the cut release paper 9 is pasted on the lower surface of the buffer pad sheet 7 by the first release paper processing area 1, and the cut release paper 9 is pasted on the upper surface of the buffer pad sheet 7 by the second release paper processing area 3, thus obtaining the buffer pad of the desired shape.

[0014] In some implementations, please refer to Figure 2 and Figure 3 As shown, the feeding roller group 21 includes a first feeding roller 211, a second feeding roller 212, and a third feeding roller 213. The first feeding roller 211 is used to load a wound buffer pad tape, which is formed by connecting multiple buffer pad sheets by overlapping the ends of adhesive tape. The second feeding roller 212 and the third feeding roller 213 respectively attach double-sided adhesive tape to the upper and lower surfaces of the buffer pad tape to form the composite buffer pad tape. By connecting multiple buffer pad sheets 7 by overlapping the ends of adhesive tape to form a continuous buffer pad tape, it can be installed in roll form on the first feeding roller 211 of the circular cutter for output. The second feeding roller 212 attaches double-sided adhesive tape 8 to the upper surface of the buffer pad tape, and the third feeding roller 213 attaches double-sided adhesive tape 8 to the lower surface of the buffer pad tape, thereby obtaining the composite buffer pad tape.

[0015] In some implementations, please refer to Figure 2 and Figure 3 As shown, the first waste discharge roller group 26 includes a preceding waste discharge roller 261 and a subsequent waste discharge roller 262. The preceding waste discharge roller 261 is located at the discharge end of the first circular cutter roller 25, and the subsequent waste discharge roller 262 is located at the discharge end of the preceding waste discharge roller 261. Waste material from the outer ring of the buffer pad sheet 7, formed by the preceding waste discharge roller 261, such as the overlapping tape between adjacent buffer pad sheets 7; and waste material from the inner ring of the buffer pad sheet 7, formed by the subsequent waste discharge roller 262.

[0016] In some implementations, please refer to Figure 2 and Figure 3 As shown, both the preceding waste discharge roller 261 and the following waste discharge roller 262 are equipped with a tape feeding roller 4 and a tape take-up roller 5. The tape output from the tape feeding roller 4 passes around the corresponding preceding waste discharge roller 261 or following waste discharge roller 262, and then winds with the tape take-up roller 5. After the tape output from the tape feeding roller 4 passes around the corresponding waste discharge roller, the tape take-up roller 5 collects the waste material stuck to the tape.

[0017] It is worth noting that, in order to ensure accurate adhesion of waste material, the roller surfaces of the preceding waste discharge roller 261 and the subsequent waste discharge roller 262 are provided with protrusions. When the waste material passes under the corresponding waste discharge roller, the protrusions on the waste discharge roller can push the tape towards the waste material, thereby achieving waste discharge.

[0018] In some implementations, please refer to Figure 2 and Figure 4 As shown, the first release paper processing area 1 includes a first release paper feeding roller 11, a first bottom film discharge roller 12, and a second circular cutter roller 13. The first release paper feeding roller 11 is used to feed the release paper 9 towards the feed end of the second circular cutter roller 13, and the first bottom film discharge roller 12 is used to feed the bottom film laid on the lower surface of the release paper 9 towards the feed end of the second circular cutter roller 13. The release paper 9 is fed from the first release paper feeding roller 11 to the second circular cutter roller 13, while the first bottom film discharge roller 12 lays the bottom film under the release paper 9 and feeds it into the second circular cutter roller 13. During the cutting process of the release paper 9, the bottom film is used to prevent the blades on the second circular cutter roller 13 from directly contacting the surface of the steel roller supporting the release paper 9, thereby improving the service life of the second circular cutter roller 13; at the same time, the bottom film allows the formed release paper 9 to continue to move forward in the circular cutter machine.

[0019] In some implementations, please refer to Figure 2 As shown, the aforementioned circular die cutter also includes a first bottom film take-up roller 6, which is located at the discharge end of the second release paper processing area 3. After the bottom film output by the first bottom film output roller 12 carries the release paper 9 output by the first release paper output roller 11 and adheres it to the lower surface of the cushioning pad sheet 7, it can continue to drive the cushioning pad sheet 7 through the second release paper processing area 3 to complete the adhesion of the release paper 9 on the upper surface of the cushioning pad sheet 7, and finally be wound up by the first bottom film take-up roller 6 located at the discharge end of the second release paper processing area 3.

[0020] In some implementations, please refer to Figure 2 and Figure 5As shown, the second release paper processing area 3 includes a second release paper feeding roller 31, a second bottom film output roller 32, a third circular knife roller 33, and a second bottom film take-up roller 34; the second release paper feeding roller 31 is used to feed the release paper toward the feed end of the third circular knife roller 33, the second bottom film output roller 32 is used to feed the bottom film laid on the lower surface of the release paper toward the feed end of the third circular knife roller 33, and the second bottom film take-up roller 34 is used to wind up the bottom film output from the output end of the third circular knife roller 33. Release paper 9 is fed from the second release paper feeding roller 31 to the third circular cutter roller 33. At the same time, the second bottom film feeding roller 32 lays the bottom film under the release paper 9 and feeds it into the third circular cutter roller 33. During the cutting process of release paper 9, the bottom film is used to prevent the blades on the third circular cutter roller 33 from directly contacting the surface of the steel roller supporting the release paper 9, thereby improving the service life of the third circular cutter roller 33. At the same time, the bottom film is used to allow the formed release paper 9 to continue to move forward in the circular cutter. Finally, the second bottom film receiving roller 34 retrieves the bottom film output by the second bottom film feeding roller 32.

[0021] 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 group of the circular knife machine; Step S3: Double-sided adhesive is applied to the upper and lower surfaces of the cushioning pad using a rotary die-cutting machine to form a composite cushioning pad; Step S4: The composite buffer pad tape is cut by the circular cutter to obtain a buffer pad of the desired shape.

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. A circular knife machine, characterized in that: It includes a first release paper processing area, a buffer pad processing area, and a second release paper processing area arranged sequentially along the conveying direction of the rotary knife machine; The cushioning pad processing area includes a feeding roller group, a first take-up roller, a second take-up roller, a release film discharge roller, a first circular cutter roller, and a first waste discharge roller group. The feeding roller group is used to feed the composite cushioning pad tape toward the feed end of the first circular cutter roller. The first take-up roller is used to wind up the release paper on the upper surface of the composite cushioning pad tape that enters the first circular cutter roller. The release film discharge roller feeds the release film laid on the upper surface of the composite cushioning pad tape toward the feed end of the first circular cutter roller. The first waste discharge roller group is located at the discharge end of the first circular cutter roller. The second take-up roller is used to wind up the release paper on the lower surface of the cushioning pad sheet output from the discharge end of the first waste discharge roller group. The first release paper processing area is used to cut release paper and attach it to the lower surface of the cushioning sheet; The second release paper processing area is used to cut release paper and attach it to the upper surface of the cushioning pad sheet.

4. The circular knife machine according to claim 3, characterized in that: The feeding roller assembly includes a first feeding roller, a second feeding roller, and a third feeding roller; the first feeding roller is used to load the wound buffer pad tape, which is formed by connecting multiple buffer pad sheets by overlapping the ends of the tape; the second feeding roller and the third feeding roller are respectively pasted with double-sided adhesive on the upper and lower surfaces of the buffer pad tape to form the composite buffer pad tape.

5. The circular knife machine according to claim 3, characterized in that: The first waste discharge roller group includes a preceding waste discharge roller and a subsequent waste discharge roller. The preceding waste discharge roller is located at the discharge end of the first circular cutter roller, and the subsequent waste discharge roller is located at the discharge end of the preceding waste discharge roller.

6. The circular knife machine according to claim 5, characterized in that: Both the preceding waste discharge roller and the following waste discharge roller are equipped with a tape feeding roller and a tape taking-up roller. The tape output by the tape feeding roller passes around the corresponding preceding waste discharge roller or following waste discharge roller, and then is wound with the tape taking-up roller.

7. The circular knife machine according to claim 3, characterized in that: The first release paper processing area includes a first release paper feeding roller, a first bottom film discharging roller, and a second circular knife roller; the first release paper feeding roller is used to feed the release paper toward the feeding end of the second circular knife roller, and the first bottom film discharging roller is used to feed the bottom film laid on the lower surface of the release paper toward the feeding end of the second circular knife roller.

8. The circular knife machine according to claim 7, characterized in that: It also includes a first bottom film take-up roller, which is located at the discharge end of the second release paper processing area.

9. The circular knife machine according to claim 3, characterized in that: The second release paper processing area includes a second release paper feeding roller, a second bottom film discharging roller, a third circular knife roller, and a second bottom film taking-up roller. The second release paper feeding roller is used to feed the release paper toward the feeding end of the third circular knife roller, the second bottom film discharging roller is used to feed the bottom film laid on the lower surface of the release paper toward the feeding end of the third circular knife roller, and the second bottom film taking-up roller is used to wind up the bottom film output from the discharge end of the third circular knife roller.

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