Dust removal device of die-cutting machine

Abstract

The utility model discloses a dust removal device for a die-cutting machine and belongs to the technical field of lithium batteries. Comprising a frame, a waste collecting box and a die cutting assembly. A connecting hole is formed in a bottom plate of the frame, and a waste collecting box is fixedly connected to the lower portion of the connecting hole. A groove is formed in the side edge of the top plate of the frame; the die cutting assembly comprises a driving motor and a die cutter, the driving motor is arranged on the top plate, one end of the die cutter is connected with the driving motor, and the other end of the die cutter penetrates through the groove and is used for cutting the pole piece; the device further comprises a protection plate, a dust collection assembly and an air blowing assembly. A dust collection opening of the dust collection assembly is right opposite to the circular through hole and connected with the third protection plate. The blowing assembly is arranged in front of the frame and is not connected with the frame. The dust removal device solves the problem that waste and chippings generated in the process of cutting a pole piece into a required pole lug cannot be removed in time, and meanwhile, the air suction assembly and the air blowing assembly are arranged and cooperate with each other, so that part of chippings are sucked away by the air suction assembly while being blown off, and the working efficiency of dust removal is improved.

Description

Technical Field

[0001] This utility model relates to a dust removal device for a die-cutting machine, which belongs to the field of lithium battery technology. Background Technology

[0002] Lithium-ion batteries, with their superior performance, have become mainstream and are widely used in various fields. The manufacturing process of lithium-ion battery cells involves a stacking process, a crucial step in the production of pouch batteries. Before stacking, the incoming strip electrode sheets are cut into the required tab shapes using a die-cutting machine to ensure compliance with product standards. However, this cutting process generates debris and waste. While some of this waste and debris typically fall into a waste bin, some remains adhered to the area near the die-cutting blade and on the tab surface, unable to be removed promptly. If this debris adheres to the tabs and is carried into subsequent processes, it can become trapped inside the battery, potentially causing micro-short circuits and severely impacting the safety performance of the lithium-ion battery. Lithium-ion batteries are chemically highly reactive; impurities such as debris introduced during production can affect battery safety. Therefore, maintaining the cleanliness of the lithium-ion battery tab surfaces is paramount. Utility Model Content

[0003] This invention addresses the problem of waste and debris generated during the cutting of electrode sheets into desired tabs in the prior art, by providing a dust removal device for a die-cutting machine.

[0004] To solve the above-mentioned technical problems, the specific technical solution of this utility model is as follows:

[0005] A dust removal device for a die-cutting machine, such as Figures 1-6 As shown, the system includes a frame, a waste collection box 9, and a die-cutting assembly. The frame includes a base plate 5, a top plate 4, and four support rods 17. One side of each support rod 17 is fixed to the base plate 5, and the other side of the support rods 17 is fixed to the top plate 4. The base plate 5 has a connecting hole 14, and the waste collection box 9 is fixedly connected below the connecting hole 14. The top plate 4 has a groove 12 on its side, and the groove 12 is located at the center of the side. The die-cutting assembly includes a drive motor 2 and a die-cutting blade. The drive motor 2 is located on the top plate 4. One end of the die-cutting blade is connected to the drive motor 2, and the other end of the die-cutting blade passes through the groove 12 but does not contact the groove 12 for cutting the electrode sheet 1. The system also includes a protective plate, a dust collection assembly, and an air blowing assembly. The protective plate includes a first protective plate 8, a second protective plate 6, and a third protective plate 7. The first protective plate 8, the second protective plate 6, and the third protective plate 7 are respectively fixedly installed on the left side, the right side, and the rear side of the frame. The third protective plate 7 has a circular through hole 18. Figure 6As shown; the suction port of the vacuuming component is directly opposite the circular through hole 18 and connected to the third protective plate 7; the air blowing component is located in front of the frame and is not connected to the frame.

[0006] The beneficial effects of this utility model are: This utility model provides a dust removal device for a die-cutting machine, such as... Figures 1-6 As shown, protective plates are fixedly installed on the left, right, and rear sides of the frame, forming a semi-enclosed dust removal channel to prevent waste and debris generated during the cutting of electrode sheet 1 into electrode tabs from splashing everywhere. A waste collection bin is provided at the bottom of the frame, allowing waste and some debris to fall accurately into the waste collection bin for easy collection. An air blowing assembly is provided at the front of the frame, with the air blowing port 10 located at the front of the frame and diagonally above the electrode sheet 1 being cut. At the same time, a circular through hole 18 is opened on the rear protective plate and connected to the suction port of the dust collection assembly, so that the air blowing port 10 is at the same height as the die-cutting blade 3 passing through the groove 12 and the circular through hole 18 on the third protective plate 7. This ensures that the blowing airflow and suction airflow are at the same height, allowing the dust collection assembly to promptly and accurately remove the debris remaining on the die-cutting blade 3 and electrode tab surface, achieving efficient and precise removal of debris. The system effectively removes debris, ensuring the cut tabs are kept very clean and preventing residual debris from adhering to the die-cut tabs and being carried into the lithium battery production process. This ensures the safety of the lithium battery when using these tabs and avoids potential safety hazards during production. Furthermore, the air blowing assembly includes a pressure tank 15 to collect and store compressed air, ensuring the blowing pressure is between 0.8 MPa and 1.0 MPa during operation. This allows some debris remaining on the die-cutting blade 3 and the tabs to be blown off, preventing situations where insufficient air pressure fails to remove residual debris. Since the blowing and suction airflows are at the same height, the simultaneous opening and cooperation of the air blowing and suction assemblies during die-cutting allows some debris to be blown off and simultaneously sucked away by the suction assembly, improving dust removal efficiency. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a dust removal device for a die-cutting machine according to the present invention; this diagram also serves as an abstract drawing.

[0008] Figure 2 This is a schematic diagram of the frame and waste collection box in a dust removal device for a die-cutting machine according to the present invention.

[0009] Figure 3 This is a front view schematic diagram of the air blowing component in a dust removal device for a die-cutting machine according to the present invention.

[0010] Figure 4 This is a schematic diagram of the top plate in a dust removal device for a die-cutting machine according to the present invention.

[0011] Figure 5 This is a schematic diagram of the base plate in a dust removal device for a die-cutting machine according to the present invention.

[0012] Figure 6 This is a schematic diagram of the third protective plate in a dust removal device for a die-cutting machine according to the present invention. Detailed Implementation

[0013] The present invention will be further described below.

[0014] like Figures 2-5 As shown, the connecting hole 14 on the base plate 5 is positioned directly opposite the upper die-cutting blade 3.

[0015] Specifically, a drive motor 2 is provided on the top plate 4 of the frame, and a die-cutting blade 3 connected to the drive motor 2 passes through the groove 12. The drive motor 2 drives the die-cutting blade 3 to perform die-cutting, so that the electrode 1 is cut into electrode tabs of different shapes. During the die-cutting process, corresponding waste and debris are generated. A connecting hole 14 is provided on the bottom plate 5, and the connecting hole 14 is set directly opposite the upper die-cutting blade 3. A waste collection box 9 is fixedly connected below the connecting hole 14, so that the waste and some debris generated when cutting the electrode 1 into the required shape of electrode tab can fall directly into the waste collection box 9, which is convenient for collecting waste and some debris. However, some debris still sticks to the die-cutting blade 3 and electrode tab and does not fall off, affecting the die-cutting of the electrode 1.

[0016] like Figure 1 As shown, the dust collection assembly includes a vacuum cleaner and a dust collector; wherein the diameter of the suction port of the vacuum cleaner and the diameter of the dust collector's dust removal port are both greater than or equal to the diameter of the circular through hole 18 on the third protective plate 7.

[0017] Specifically, when the die-cutting blade 3 is cutting the electrode sheet 1, the dust collection component is simultaneously activated to remove debris generated during the die-cutting process. The connecting pipe 16 of the vacuum cleaner or dust collector is connected to the circular through-hole 18 on the third protective plate 7. The diameter of both the vacuum cleaner's suction port and the dust collector's dust collection port is greater than or equal to the diameter of the circular through-hole 18 on the third protective plate 7, ensuring that the opening of the connecting pipe 16 covers the circular through-hole 18. This guarantees that the vacuum airflow generated by the vacuum cleaner or dust collector can completely pass through the circular through-hole 18 to absorb the debris generated during the die-cutting process. Furthermore, the vacuum cleaner or dust collector can be easily placed on the ground and moved, facilitating on-site operation for workers in actual production. Figure 1 In the drawing, only the connecting pipe 16 of the vacuum cleaner or dust remover is shown, but the main body of the vacuum cleaner or dust remover is not shown.

[0018] like Figure 1 and Figure 3As shown, the air blowing assembly includes a pressure tank 15, a pressure valve 13, a solenoid valve 11, and an air blowing port 10. One end of the pressure tank 15 is connected to a compressed air pipeline. A pressure valve 13 is provided on the compressed air pipeline near the pressure tank 15. The compressed air pipeline delivers compressed air to the air blowing assembly and outputs it through the air blowing port 10 to achieve the purpose of blowing. However, the pressure of the delivered compressed air is insufficient to remove the debris adhering to the die-cutting blade 3 and the tabs through blowing. Therefore, the pressure tank 15 is connected to the compressed air pipeline. Before the air blowing assembly starts working, the pressure valve 13 is opened to collect the compressed air through the pressure tank 15. When the pressure tank 15 is full of compressed air, the pressure valve 13 is closed. The other end of the pressure tank 15 is connected to the air blowing port 10 through a pipeline, and a solenoid valve 11 is provided on the pipeline near the pressure tank 15. The air inlet 10 is located in front of the frame and diagonally above the electrode sheet 1 being cut. At the same time, the air inlet 10 is at the same height as the die-cutting blade 3 passing through the groove 12 and the circular through hole 18 on the third protective plate 7. When the die-cutting blade 3 is cutting the electrode sheet 1, the air blowing assembly is activated to blow away some of the debris adhering to the die-cutting blade 3 and the electrode tab, so that some of the debris is completely removed. Specifically, connecting the power supply opens the solenoid valve 11, allowing compressed air from the pressure tank 15 to be output through the air outlet 10. The air pressure output from the air outlet 10 is maintained at 0.8MPa to 1.0MPa, ensuring that the air blown out of the air outlet 10 can completely remove some of the debris adhering to the die-cutting blade 3 and the electrode tabs without damaging the shape of the cut electrode tabs. This ensures that the electrode tab surface has good cleanliness and prevents debris from being introduced into the lithium battery production process through the electrode tabs, thus avoiding safety hazards. At the same time, during the die-cutting process, the suction component and the blowing component are activated simultaneously, allowing the suction and blowing to work together to more completely remove some of the debris adhering to the die-cutting blade 3 and the electrode tabs, improving the efficiency of debris removal and further ensuring the cleanliness of the electrode tabs.

[0019] The above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A dust removal device for a die-cutting machine, comprising a frame, a waste collection box (9), and a die-cutting assembly; The frame includes a base plate (5), a top plate (4), and four support rods (17). One side of each support rod (17) is fixed to the base plate (5), and the other side of each support rod (17) is fixed to the top plate (4). The bottom plate (5) is provided with a connecting hole (14), and a waste collection box (9) is fixedly connected below the connecting hole (14); the top plate (4) is provided with a groove (12) on the side, and the groove (12) is located at the center of the side. The die-cutting assembly includes a drive motor (2) and a die-cutting blade (3). The drive motor (2) is mounted on the top plate (4). One end of the die-cutting blade (3) is connected to the drive motor (2), and the other end of the die-cutting blade (3) passes through the groove (12) and is used to cut the electrode sheet (1). The assembly is characterized by further including a protective plate, a dust collection assembly, and an air blowing assembly. The protective plate includes a first protective plate (8), a second protective plate (6) and a third protective plate (7). The first protective plate (8), the second protective plate (6) and the third protective plate (7) are fixedly installed on the left side, the right side and the rear of the frame, respectively, and a circular through hole (18) is provided on the third protective plate (7). The suction port of the vacuum assembly is directly connected to the circular through hole (18) and the third protective plate (7); The air blowing assembly is located at the front of the frame and is not connected to the frame.

2. The dust removal device for a die-cutting machine according to claim 1, characterized in that, The connecting hole (14) on the base plate is positioned directly opposite the upper die-cutting blade (3).

3. The dust removal device for a die-cutting machine according to claim 1, characterized in that, Vacuum cleaning components include vacuum cleaners and dust collectors; The diameter of the suction port of the vacuum cleaner and the diameter of the dust removal port of the dust collector are both greater than or equal to the diameter of the circular through hole (18) on the third protective plate (7).

4. The dust removal device for a die-cutting machine according to claim 1, characterized in that, The air blowing assembly includes a pressure tank (15), a pressure valve (13), a solenoid valve (11), and an air blowing port (10); wherein, one end of the pressure tank (15) is connected to a compressed air pipeline, and a pressure valve (13) is provided on the compressed air pipeline at the end near the pressure tank (15); the other end of the pressure tank (15) is connected to the air blowing port (10) through a pipeline, and a solenoid valve (11) is provided on the pipeline at the end near the pressure tank (15).

5. A dust removal device for a die-cutting machine according to claim 4, characterized in that, The air inlet (10) is located directly in front of the frame and diagonally above the cut electrode (1).

6. A dust removal device for a die-cutting machine according to any one of claims 4 or 5, characterized in that, The air inlet (10) is at the same height as the die-cutting blade (3) passing through the groove (12) and the circular through hole (18) on the third protective plate (7).

7. A dust removal device for a die-cutting machine according to any one of claims 4 or 5, characterized in that, The blowing pressure output by the blowing port (10) is 0.8MPa~1.0MPa.

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