Winding cutter device capable of removing dust

Abstract

The utility model discloses a winding cutter device capable of removing dust, and relates to the technical field of pole piece processing devices. The device specifically comprises a support frame; the fixed cutter is connected to the supporting frame, a cutter groove is formed in the fixed cutter, a negative pressure channel is formed in the fixed cutter, and an air inlet of the negative pressure channel is formed in the inner side wall of the cutter groove; the movable cutter is connected to the supporting frame and can reciprocate in the height direction of the supporting frame, so that the cutting edge part of the movable cutter is close to or far away from the cutter groove of the fixed cutter, and when the cutting edge part cuts a pole piece located in the cutter groove, the negative pressure channel can adsorb and clean chippings in the cutter groove. The utility model aims to effectively remove metal scraps during winding and cutting and ensure the cleanliness and safety of a battery.

Description

Technical Field

[0001] The utility model relates to the technical field of pole piece processing devices, and particularly relates to a winding cutter device capable of removing dust. Background Technique

[0002] With the wide application of lithium-ion batteries in various electronic devices, the production process of batteries is constantly improved and optimized. The winding process is a key link in the manufacturing process of lithium-ion batteries and has an important impact on the performance and quality of batteries. In the winding process, the cutting of pole pieces is an inevitable step. However, metal debris is easily generated during the cutting of pole pieces. These debris will not only contaminate the battery core but also cause the coating of the pole piece to fall off and contaminate the equipment, which is not conducive to 5S cleaning. The so-called 5S cleaning refers to sorting (SEIRI), straightening (SEITON), sweeping (SEISO), cleaning (SEIKETSU), and self-discipline (SHITSUKE). Its purpose is to improve production efficiency and product quality through standardized management and a clean production environment.

[0003] In the prior art, in order to solve the above technical problems, a winding cutter with a vacuum dust removal device is disclosed. The device is provided with a vacuum dust suction device on one side of the cutter and a gap is left between the device and the cutter, so that after the cutter completes cutting, the vacuum dust suction device on one side of it can adsorb the debris at the cut. However, although this solution realizes the adsorption of debris, due to the relatively long distance between the dust suction port and the pole piece, the adsorption force is small, and it is easy to cause debris to remain in the cutting area, failing to completely solve the problem of debris pollution. In addition, lithium-ion battery pole pieces are usually made of metal materials such as aluminum foil and copper foil. These materials are prone to generate tiny metal debris during the cutting process. Once these debris remain inside the battery, they will not only affect the electrochemical performance of the battery but also may cause safety hazards such as short circuits.

[0004] Therefore, how to effectively remove metal debris during winding cutting and ensure the cleanliness and safety of the battery has become an urgent technical problem to be solved. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a winding cutter device capable of removing dust, aiming to effectively remove metal debris during winding cutting and ensure the cleanliness and safety of the battery.

[0006] To achieve the above purpose, the utility model proposes a winding cutter device capable of removing dust, including:

[0007] A support frame;

[0008] The fixed knife is connected to the support frame. There is a knife groove on the fixed knife, and a negative pressure channel is formed inside the fixed knife. The air inlet of the negative pressure channel is arranged on the inner side wall of the knife groove.

[0009] The moving knife is connected to the support frame and can reciprocate along the height direction of the support frame, so that the cutting edge part of the moving knife approaches or moves away from the knife groove of the fixed knife. When the cutting edge part cuts the pole piece located in the knife groove, the negative pressure channel can adsorb and clean the debris in the knife groove.

[0010] Integrating the negative pressure channel inside the fixed knife makes the dust collection device and the cutting device closely combined, reducing the volume and complexity of the equipment. The air inlet of the negative pressure channel is arranged on the inner side wall of the knife groove, close to the cutting area, which can timely adsorb and clean the debris during the cutting process, avoid the debris remaining in the cutting area, and ensure the cleanliness of the pole piece and the equipment. The support frame is made of high-strength materials, providing the stability and rigidity of the whole device, enabling the fixed knife and the moving knife to remain stable during the cutting process, and reducing the cutting error.

[0011] In an embodiment of the present application, the negative pressure channel includes:

[0012] An air inlet section, the air inlet of the air inlet section is arranged on the inner side wall of the knife groove;

[0013] A first frustum-shaped flow equalizing section, the air inlet of the first frustum-shaped flow equalizing section is arranged on the side wall of the first frustum-shaped flow equalizing section, the air outlet of the first frustum-shaped flow equalizing section is arranged on the first end face of the first frustum-shaped flow equalizing section, the area of the first end face of the first frustum-shaped flow equalizing section is larger than the area of the second end face of the first frustum-shaped flow equalizing section, and the air outlet of the air inlet section is connected to the air inlet of the first frustum-shaped flow equalizing section.

[0014] The design of the first frustum-shaped flow equalizing section makes the air flow more uniform, avoiding eddy currents and locally excessive pressures, and ensuring the efficient operation of the whole negative pressure channel. Since the area of the first end face of the first frustum-shaped flow equalizing section is larger than the area of the second end face, the air will gradually accelerate during the flow process, improving the overall efficiency of the negative pressure channel.

[0015] In an embodiment of the present application, the area of the air outlet of the air inlet section is equal to the area of the air inlet of the first frustum-shaped flow equalizing section.

[0016] When the cross-sectional areas of two connecting components are equal, the sudden change in air flow will be reduced, thereby reducing the generation of turbulence and eddy currents. It helps to maintain the stable flow of air and improve the overall efficiency of the system. The equal cross-sectional areas can make the pressure change more stable, avoiding the phenomenon of locally excessive or too low pressure caused by the change in cross-sectional area. Equal cross-sectional areas can reduce the energy loss caused by the change in cross-sectional area during the flow process, thereby improving the energy utilization rate of the system.

[0017] In an embodiment of the present application, the length of the air outlet of the air inlet section is equal to the length of the generatrix of the first frustum-shaped flow equalizing section.

[0018] When the length of the air outlet of the air inlet section is equal to the length of the generatrix of the first frustum-shaped flow equalizing section, the transition of air flow is smoother, reducing the sharp changes during the flow, thereby reducing the generation of turbulence and eddy currents. This design can make the pressure distribution more uniform when the air enters the first frustum-shaped flow equalizing section, avoiding the phenomenon of too high or too low local pressure. The matching of the length of the air outlet of the air inlet section and the generatrix length of the flow equalizing section can ensure the consistency and continuity of air flow, further optimizing the air flow effect.

[0019] In an embodiment of the present application, a first negative pressure fan is provided at the air outlet of the first frustum-shaped flow equalizing section.

[0020] The first negative pressure fan can effectively increase the air flow velocity, further improving the efficiency of air flow. By arranging the first negative pressure fan at the air outlet, it can ensure that the air passes through the entire system at a higher speed and a larger flow rate.

[0021] In an embodiment of the present application, a pressing member is further provided on the support frame. When the blade part cuts the pole piece located in the knife groove, the pressing member extends out to press the pole piece to be cut.

[0022] Since the pressing member can operate automatically, the manual intervention time is reduced, thereby improving the overall production efficiency. By arranging the pressing member, the cutting accuracy can be improved. The improvement of the cutting accuracy directly affects the quality of the pole piece, reduces the rejection rate, and improves the consistency and reliability of the product.

[0023] In an embodiment of the present application, a dust suction channel is provided in the pressing member, and the dust suction channel includes:

[0024] An air inlet section, the air inlet of the air inlet section is arranged on the pressing surface of the pressing member;

[0025] A second frustum-shaped flow equalizing section, the air inlet of the second frustum-shaped flow equalizing section is arranged on the side wall of the second frustum-shaped flow equalizing section, the air outlet of the second frustum-shaped flow equalizing section is arranged on the first end surface of the second frustum-shaped flow equalizing section, the area of the first end surface of the second frustum-shaped flow equalizing section is larger than the area of the second end surface of the second frustum-shaped flow equalizing section, and the air outlet of the air inlet section is connected to the air inlet of the second frustum-shaped flow equalizing section.

[0026] The design of the second frustum-shaped flow equalizing section makes the air flow more uniform, avoiding eddy currents and locally excessive pressure, and ensuring the efficient operation of the entire dust suction channel. Since the area of the first end face of the second frustum-shaped flow equalizing section is larger than that of the second end face, the air will gradually accelerate during the flow process, improving the overall efficiency of the dust suction channel.

[0027] In an embodiment of the present application, the area of the air outlet of the air inlet section is equal to the area of the air inlet of the second frustum-shaped flow equalizing section.

[0028] When the cross-sectional areas of two connecting components are equal, the sudden change in air flow will be reduced, thereby reducing the generation of turbulence and eddy currents. It helps to maintain the stable flow of air and improve the overall efficiency of the system. Equal cross-sectional areas can make the pressure change more stable, avoiding the phenomenon of locally excessive or too low pressure caused by the change in cross-sectional area. Equal cross-sectional areas can reduce the energy loss caused by the change in cross-sectional area during the flow process, thereby improving the energy utilization rate of the system.

[0029] In an embodiment of the present application, the length of the air outlet of the air inlet section is equal to the generatrix length of the second frustum-shaped flow equalizing section.

[0030] When the length of the air outlet of the air inlet section is equal to the generatrix length of the second frustum-shaped flow equalizing section, the transition of air flow is smoother, reducing the sharp changes in the flow, thereby reducing the generation of turbulence and eddy currents. This design can make the pressure distribution more uniform when the air enters the second frustum-shaped flow equalizing section, avoiding the phenomenon of locally excessive or too low pressure. The matching of the length of the air outlet of the air inlet section and the generatrix length of the flow equalizing section can ensure the consistency and continuity of air flow, further optimizing the air flow effect.

[0031] In an embodiment of the present application, a second negative pressure fan is provided at the air outlet of the second frustum-shaped flow equalizing section.

[0032] The second negative pressure fan can effectively increase the air flow rate and further improve the efficiency of air flow. By setting the second negative pressure fan at the air outlet, it can ensure that the air passes through the entire system at a higher speed and a larger flow rate.

[0033] By adopting the above technical solution, integrating the negative pressure channel into the fixed knife makes the dust suction device and the cutting device closely combined, reducing the volume and complexity of the equipment. The air inlet of the negative pressure channel is arranged on the inner side wall of the tool groove, close to the cutting area, which can timely adsorb and clean the debris during the cutting process, avoid the debris remaining in the cutting area, and ensure the cleanliness of the pole piece and the equipment. The support frame is made of high-strength materials, providing the stability and rigidity of the entire device, enabling the fixed knife and the moving knife to remain stable during the cutting process, and reducing the cutting error. Description of the Drawings

[0034] The present utility model will be described in detail below in conjunction with specific embodiments and the accompanying drawings, where:

[0035] Figure 1 is a schematic three-dimensional structure diagram of the first embodiment of the present utility model;

[0036] Figure 2 is a detailed schematic diagram of the fixed knife;

[0037] Figure 3 is a detailed schematic diagram of the pressing member;

[0038] 10. Support frame; 20. Fixed knife; 21. Knife groove; 22. Air inlet section; 23. First frustum-shaped flow equalization section; 30. Moving knife; 40. Pressing member; 41. Air intake section; 42. Second frustum-shaped flow equalization section. Detailed implementation manners

[0039] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present utility model and do not constitute a limitation to the present utility model.

[0040] As Figures 1 to 3 shown, in order to achieve the above object, the present utility model provides a winding cutter device capable of dust removal, including:

[0041] Support frame 10;

[0042] Fixed knife 20, connected to the support frame 10, a knife groove 21 is provided on the fixed knife 20, a negative pressure channel is formed in the fixed knife 20, and the air inlet of the negative pressure channel is provided on the inner side wall of the knife groove 21;

[0043] Moving knife 30, connected to the support frame 10 and capable of reciprocating in the height direction of the support frame 10, so that the cutting edge of the moving knife 30 approaches or moves away from the knife groove 21 of the fixed knife 20. When the cutting edge cuts the pole piece located in the knife groove 21, the negative pressure channel can adsorb and clean the debris in the knife groove 21.

[0044] Specifically, the support frame 10 is made of high-strength steel or aluminum alloy material to ensure its sufficient rigidity and durability. The support frame 10 is the base frame of the entire device, responsible for supporting and fixing the fixed knife 20 and the moving knife 30.

[0045] The fixed knife 20 is fixedly connected to the support frame 10, and a knife groove 21 is provided thereon for placing and supporting the pole piece. A negative pressure channel is formed in the fixed knife 20, and the air inlet of the negative pressure channel is provided on the inner side wall of the knife groove 21 for adsorbing and cleaning the debris generated during cutting. The fixed knife 20 is made of high-hardness steel to ensure that it is not easily worn during cutting.

[0046] The moving blade 30 is also connected to the support frame 10 and can reciprocate in the height direction of the support frame 10. The reciprocating movement of the moving blade 30 in the height direction relative to the support frame 10 can be achieved by the cooperation of a guide rail and a driving motor. For example, the guide rail is connected to the support frame 10, and the length direction of the guide rail is consistent with the height direction of the support frame 10. At this time, the moving blade 30 is slidably connected to the guide rail, and then the moving blade 30 is driven to reciprocate along the length direction of the guide rail by a driving member (such as a telescopic motor, a transmission lead screw, etc.). The cutting edge of the moving blade 30 is close to or away from the tool groove 21 of the fixed blade 20. When the cutting edge of the moving blade 30 cuts the pole piece located in the tool groove 21, the negative pressure channel will adsorb and clean the debris in the tool groove 21.

[0047] The moving blade 30 is made of a material with high hardness and high wear resistance, such as tungsten carbide or other hard alloys, to ensure that it remains sharp and durable during frequent cutting operations.

[0048] The fixed blade 20 is fixedly connected to the support frame 10 and fixed by means of bolts or welding to ensure that it does not move or loosen during the cutting process.

[0049] The moving blade 30 is connected to the support frame 10 through a sliding mechanism and can reciprocate in the height direction of the support frame 10. The sliding mechanism includes a guide rail and a slider, and the moving blade 30 realizes smooth up and down movement through the cooperation of the guide rail and the slider. The negative pressure channel is built into the fixed blade 20, and the air inlet of the channel is arranged on the inner side wall of the tool groove 21 so as to effectively adsorb and clean the debris during the cutting process.

[0050] With the above technical solution, the negative pressure channel is integrated into the fixed blade 20, so that the dust collection device and the cutting device are closely combined, reducing the volume and complexity of the equipment. The air inlet of the negative pressure channel is arranged on the inner side wall of the tool groove 21, close to the cutting area, and can adsorb and clean the debris in time during the cutting process, avoiding the debris remaining in the cutting area and ensuring the cleanliness of the pole piece and the equipment. The support frame 10 is made of high-strength material, providing the stability and rigidity of the whole device, so that the fixed blade 20 and the moving blade 30 can remain stable during the cutting process, reducing the cutting error.

[0051] In an embodiment of the present application, the negative pressure channel includes:

[0052] An air inlet section 22, the air inlet of the air inlet section 22 is arranged on the inner side wall of the tool groove 21;

[0053] The first frustum-shaped flow equalizing section 23, the air inlet of the first frustum-shaped flow equalizing section 23 is arranged on the side wall of the first frustum-shaped flow equalizing section 23, the air outlet of the first frustum-shaped flow equalizing section 23 is arranged on the first end face of the first frustum-shaped flow equalizing section 23, the area of the first end face of the first frustum-shaped flow equalizing section 23 is larger than the area of the second end face of the first frustum-shaped flow equalizing section 23, and the air outlet of the air inlet section 22 is connected to the air inlet of the first frustum-shaped flow equalizing section 23.

[0054] Specifically, the air inlet of the air inlet section 22 is arranged on the inner side wall of the cutter groove 21, which is responsible for guiding air into the negative pressure channel. The air inlet of the first frustum-shaped flow equalizing section 23 is arranged on the side wall of the first frustum-shaped flow equalizing section 23. The air outlet is arranged on the first end face of the first frustum-shaped flow equalizing section 23. The area of the first end face of the first frustum-shaped flow equalizing section 23 is larger than the area of the second end face. The air outlet of the air inlet section 22 is connected to the air inlet of the first frustum-shaped flow equalizing section 23. Since the first frustum-shaped flow equalizing section 23 is frustum-shaped, and at the same time, its air outlet is arranged on the first end face of the first frustum-shaped flow equalizing section 23, the air inlet wind speed of the air inlet section 22 can be made uniform, and the occurrence of eddy currents can be avoided.

[0055] Adopting the above technical solution, the design of the first frustum-shaped flow equalizing section 23 makes the air flow more uniform, avoids eddy currents and locally excessive pressures, and ensures the efficient operation of the entire negative pressure channel. Since the area of the first end face of the first frustum-shaped flow equalizing section 23 is larger than the area of the second end face, the air will gradually accelerate during the flow process, improving the overall efficiency of the negative pressure channel.

[0056] In an embodiment of the present application, the area of the air outlet of the air inlet section 22 is equal to the area of the air inlet of the first frustum-shaped flow equalizing section 23.

[0057] Adopting the above technical solution, when the cross-sectional areas of the two connecting components are equal, the sudden change in air flow will be reduced, thereby reducing the generation of turbulent flow and eddy currents. It helps to maintain the stable flow of air and improve the overall efficiency of the system. The equal cross-sectional area can make the pressure change more stable, avoiding the phenomenon of locally excessive or too low pressure caused by the change in cross-sectional area. The equal cross-sectional area can reduce the energy loss caused by the change in cross-sectional area during the flow process, thereby improving the energy utilization rate of the system.

[0058] In an embodiment of the present application, the length of the air outlet of the air inlet section 22 is equal to the generatrix length of the first frustum-shaped flow equalizing section 23.

[0059] With the above technical solution, when the length of the air outlet of the air inlet section 22 is equal to the length of the generatrix of the first frustum-shaped flow equalizing section 23, the transition of air flow is smoother, reducing the sharp changes during the flow, thereby reducing the generation of turbulence and eddy currents. This design can make the pressure distribution more uniform when the air enters the first frustum-shaped flow equalizing section 23, avoiding the phenomenon of too high or too low local pressure. The matching of the length of the air outlet of the air inlet section 22 and the length of the generatrix of the flow equalizing section can ensure the consistency and continuity of air flow, further optimizing the air flow effect.

[0060] In an embodiment of the present application, a first negative pressure fan is provided at the air outlet of the first frustum-shaped flow equalizing section 23.

[0061] With the above technical solution, the first negative pressure fan can effectively increase the air flow velocity, further improving the air flow efficiency. By setting the first negative pressure fan at the air outlet, it can ensure that the air passes through the entire system at a higher speed and a larger flow rate.

[0062] In an embodiment of the present application, a pressing member 40 is further provided on the support frame 10. When the cutting edge cuts the pole piece located in the knife groove 21, the pressing member 40 extends to press the pole piece to be cut.

[0063] Specifically, the support frame 10 is made of high-strength steel or aluminum alloy, having good rigidity and durability. It is used to support the entire device and provide a stable working platform.

[0064] The pressing member 40 is connected to the support frame 10 through a sliding mechanism or a spring mechanism, and can extend or retract when needed. When the cutting edge cuts the pole piece, it extends and presses the pole piece to be cut to ensure the accuracy and stability of cutting.

[0065] With the above technical solution, since the pressing member 40 can operate automatically, the manual intervention time is reduced, thereby improving the overall production efficiency. By setting the pressing member 40, the cutting accuracy can be improved. The improvement of the cutting accuracy directly affects the quality of the pole piece, reduces the scrap rate, and improves the consistency and reliability of the product.

[0066] In an embodiment of the present application, a dust suction channel is provided in the pressing member 40, and the dust suction channel includes:

[0067] An air inlet section 41, and the air inlet of the air inlet section 41 is provided on the pressing surface of the pressing member 40;

[0068] The second frustum-shaped flow equalizing section 42, the air inlet of the second frustum-shaped flow equalizing section 42 is arranged on the side wall of the second frustum-shaped flow equalizing section 42, the air outlet of the second frustum-shaped flow equalizing section 42 is arranged on the first end face of the second frustum-shaped flow equalizing section 42, the area of the first end face of the second frustum-shaped flow equalizing section 42 is larger than the area of the second end face of the second frustum-shaped flow equalizing section 42, and the air outlet of the intake section 41 is connected to the air inlet of the second frustum-shaped flow equalizing section 42.

[0069] Specifically, the pressing member 40 is used to press the workpiece during operation and has a dust suction function at the same time.

[0070] The dust suction channel includes an intake section 41 and a second frustum-shaped flow equalizing section 42. Among them, the air inlet of the intake section 41 is arranged on the pressing surface of the pressing member 40 and is used to suck in air and dust. The air outlet of the intake section 41 is connected to the air inlet of the second frustum-shaped flow equalizing section 42.

[0071] The air inlet of the second frustum-shaped flow equalizing section 42 is arranged on the side wall of the second frustum-shaped flow equalizing section 42, and the air outlet is arranged on the first end face of the second frustum-shaped flow equalizing section 42. The area of the first end face of the second frustum-shaped flow equalizing section 42 is larger than the area of the second end face, forming a frustum-shaped structure. It is used to evenly distribute the inhaled air flow to ensure the dust suction effect. It is connected to the pressing surface of the pressing member 40 through the intake section 41.

[0072] Adopting the above technical solution, the design of the second frustum-shaped flow equalizing section 42 makes the air flow more uniform, avoids eddy currents and locally excessive pressures, and ensures the efficient operation of the entire dust suction channel. Since the area of the first end face of the second frustum-shaped flow equalizing section 42 is larger than the area of the second end face, the air will gradually accelerate during the flow process, improving the overall efficiency of the dust suction channel.

[0073] In an embodiment of the present application, the area of the air outlet of the intake section 41 is equal to the area of the air inlet of the second frustum-shaped flow equalizing section 42.

[0074] Adopting the above technical solution, when the cross-sectional areas of the two connecting components are equal, the sudden change in air flow will be reduced, thereby reducing the generation of turbulence and eddy currents. It helps to maintain the stable flow of air and improve the overall efficiency of the system. The equal cross-sectional area can make the pressure change more stable, avoiding the phenomenon of locally excessive or too low pressure caused by the change in cross-sectional area. The equal cross-sectional area can reduce the energy loss caused by the change in cross-sectional area during the flow process, thereby improving the energy utilization rate of the system.

[0075] In an embodiment of the present application, the length of the air outlet of the intake section 41 is equal to the generatrix length of the second frustum-shaped flow equalizing section 42.

[0076] With the above technical solution, when the length of the air outlet of the intake section 41 is equal to the length of the generatrix of the second frustum-shaped flow equalizing section 42, the transition of air flow is smoother, reducing the sharp changes in the flow and thus reducing the generation of turbulence and eddy currents. This design can make the pressure distribution of the air more uniform when entering the second frustum-shaped flow equalizing section 42, avoiding the phenomenon of too high or too low local pressure. The matching of the length of the air outlet of the intake section 41 and the length of the generatrix of the flow equalizing section can ensure the consistency and continuity of air flow, further optimizing the air flow effect.

[0077] In an embodiment of the present application, a second negative pressure fan is provided at the air outlet of the second frustum-shaped flow equalizing section 42.

[0078] With the above technical solution, the second negative pressure fan can effectively increase the air flow velocity and further improve the air flow efficiency. By arranging the second negative pressure fan at the air outlet, it can ensure that the air passes through the entire system at a higher speed and a larger flow rate.

[0079] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A winding cutter device capable of removing dust, characterized in that, Comprising: Support frame; Fixed knife, connected to the support frame, a knife groove is provided on the fixed knife, a negative pressure channel is formed in the fixed knife, and an air inlet of the negative pressure channel is arranged on the inner side wall of the knife groove; Moving knife, connected to the support frame and reciprocating in the height direction of the support frame, so that the cutting edge of the moving knife approaches or moves away from the knife groove of the fixed knife. When the cutting edge cuts the pole piece located in the knife groove, the negative pressure channel can adsorb and clean the debris in the knife groove.

2. The dust-removable winding cutter device according to claim 1, wherein, The negative pressure channel includes: Air inlet section, the air inlet of the air inlet section is arranged on the inner side wall of the knife groove; First frustum-shaped flow equalizing section, the air inlet of the first frustum-shaped flow equalizing section is arranged on the side wall of the first frustum-shaped flow equalizing section, the air outlet of the first frustum-shaped flow equalizing section is arranged on the first end face of the first frustum-shaped flow equalizing section, the area of the first end face of the first frustum-shaped flow equalizing section is larger than the area of the second end face of the first frustum-shaped flow equalizing section, and the air outlet of the air inlet section is connected to the air inlet of the first frustum-shaped flow equalizing section.

3. The dust-removable winding cutter device according to claim 2, characterized in that, The area of the air outlet of the air inlet section is equal to the area of the air inlet of the first frustum-shaped flow equalizing section.

4. The dust-removable winding cutter device according to claim 2, wherein The length of the air outlet of the air inlet section is equal to the generatrix length of the first frustum-shaped flow equalizing section.

5. The dust-removable winding cutter device according to claim 2, wherein, A first negative pressure fan is arranged at the air outlet of the first frustum-shaped flow equalizing section.

6. The dust-removable winding cutter device according to any one of claims 1 to 5, characterized in that, A pressing member is further arranged on the support frame. When the cutting edge cuts the pole piece located in the knife groove, the pressing member extends out to press the pole piece to be cut.

7. The dust-removable winding cutter device according to claim 6, characterized in that, A dust suction channel is arranged in the pressing member, and the dust suction channel includes: Air intake section, the air inlet of the air intake section is arranged on the pressing surface of the pressing member; Second frustum-shaped flow equalizing section, the air inlet of the second frustum-shaped flow equalizing section is arranged on the side wall of the second frustum-shaped flow equalizing section, the air outlet of the second frustum-shaped flow equalizing section is arranged on the first end face of the second frustum-shaped flow equalizing section, the area of the first end face of the second frustum-shaped flow equalizing section is larger than the area of the second end face of the second frustum-shaped flow equalizing section, and the air outlet of the air intake section is connected to the air inlet of the second frustum-shaped flow equalizing section.

8. The dust-removable winding cutter device according to claim 7, wherein, The area of the air outlet of the air intake section is equal to the area of the air inlet of the second frustum-shaped flow equalizing section.

9. The dust-removable winding cutter device according to claim 7, characterized in that, The length of the air outlet of the air intake section is equal to the generatrix length of the second frustum-shaped flow equalizing section.

10. The dust-removable winding cutter device according to claim 7, characterized in that, A second negative pressure fan is arranged at the air outlet of the second frustum-shaped flow equalizing section.

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