Low-dust burr-free high-precision cutting tool for electrode plates

Abstract

The low-dust burr-free high-precision cutting tool for the electrode slice comprises a regulating assembly, first supporting columns, a lower cutter assembly and an air cylinder installation plate, the first supporting columns are symmetrically installed on the two sides of the air cylinder installation plate, and an upper cutter moving assembly is fixed between the air cylinder installation plate and the cutter bottom plate in a sliding mode. The regulating assembly is arranged on one side of the cutting knife bottom plate, the lower cutting knife assembly directly faces the upper cutting knife assembly, an electrode plate is fixed on the lower cutting knife magnetic seat, positioning strips are symmetrically arranged on the lower cutting knife magnetic seat, the regulating assembly is connected with the lower cutting knife magnetic seat, and the dust collection assembly and the second supporting column are fixed at the bottom of the cutting knife bottom plate; a pressing plate in the upper cutter assembly is fixed below a cutter clamping plate through a fixing bolt, the upper portion of an upper cutter is fixed in the cutter clamping plate, the upper cutter is a double-side cutter, and a spring is installed on the fixing bolt. According to the low-dust burr-free high-precision cutting tool for the electrode plates, the production quality and the yield of the electrode plates are remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of electrode segment die-cutting in the lithium capacitor or lithium battery industry, and particularly relates to a low-dust, burr-free, high-precision cutting tool for electrode sheets. Background Technology

[0002] The final step in lithium battery manufacturing, the electrode segment, requires cutting the rolled electrodes into sheet-like plates according to fixed dimensions. The thickness of these plates is typically 50-200µm. These thin plates have an aluminum or copper foil core and are coated with electrode powder on both the top and bottom surfaces. During cutting, a cutting blade acts on the plate, cutting it through shearing force. This process generates a large amount of dust and material spillage. In the later assembly stage, this electrode dust and foreign matter can puncture the separator, causing a short circuit between the positive and negative electrodes and posing a fire risk. Cells without obvious short circuits may self-discharge later, leading to abnormal electrical performance. The spilled material can also puncture the separator during assembly. Currently, separator thickness is typically around 8-20µm, and separators are gradually becoming thinner. The impact of cutting dust and material spillage on product safety is becoming increasingly significant.

[0003] Currently, electrode cutting mainly employs upper / lower blade meshing shearing, using shearing force to cut the electrode. To reduce material loss, oblique blade shears are often used instead of flat blade shears. However, due to the increasing length of capacitors and batteries, when using oblique blade shears, one side of the electrode contacts the upper blade first, resulting in cutting, while the other side contacts the blade later, cutting the entire electrode. This uneven force distribution at both ends of the electrode, with one side bearing force first and the other later, can lead to uneven force distribution, significant material loss on one side, large fluctuations in electrode size, and a higher likelihood of burrs, rough edges, and material loss. Furthermore, there is no direct connection between the electrode cutting blade and a negative pressure dust collection device. Currently, the industry detects burrs and rough edges offline using video microscopes for random sampling, making 100% CCD inspection impossible. The outflow of defective electrode cutting materials poses a significant risk of fire in subsequent battery cells. Therefore, improving the cutting method to reduce burrs, rough edges, and other defects that affect battery cell safety is crucial. Utility Model Content

[0004] In view of this, the present invention aims to propose a low-dust, burr-free, high-precision cutting tool for electrode sheets, in order to solve the problems of uneven force on both ends of the electrode sheet during electrode sheet cutting, easy occurrence of unilateral force deviation of the electrode sheet, serious unilateral material loss, large fluctuation of electrode sheet size, and more likely to produce burrs, rough edges and material loss. In addition, the poor cutting of the electrode sheet and its outflow pose a great risk of fire in the battery cell in the subsequent process.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] This utility model provides a low-dust, burr-free, high-precision cutting tool for electrode sheets, comprising a second support column, a cutting blade base plate, a first support column, a cylinder mounting plate, an upper cutting blade moving assembly, an upper cutting blade assembly, a leveling assembly, and a dust collection assembly. The leveling assembly, the first support column, the lower cutting blade assembly, and the cylinder mounting plate are fixed to the upper part of the cutting blade base plate. The first support column is symmetrically installed on the left and right sides of the cylinder mounting plate. The upper cutting blade moving assembly is slidably fixed between the cylinder mounting plate and the cutting blade base plate, and the upper cutting blade moving assembly is connected to the upper cutting blade... The blade assembly is connected, the aligning assembly is located on one side of the cutter base plate, the lower cutter assembly is installed opposite the upper cutter assembly, the electrode plate is fixed on the lower cutter magnetic base, and the lower cutter magnetic base is symmetrically set with positioning strips. The aligning assembly is connected to the lower cutter magnetic base, and the bottom of the cutter base plate is fixed with a dust collection assembly and a second support column. The pressure plate in the upper cutter assembly is fixed to the lower part of the cutter clamping plate by fixing bolts. The upper part of the upper cutter is fixed inside the cutter clamping plate. The pressure plate is located on the feed side of the upper cutter. The upper cutter is a double-sided cutter. Springs are installed on the fixing bolts.

[0007] Furthermore, the upper cutting blade moving assembly includes a first cylinder, a cylinder connector, a cylinder connecting block, an upper cutting blade fixing seat, and a guide post. The first cylinder is locked onto the cylinder mounting plate. The cylinder connector is fixed on the piston rod of the first cylinder. The cylinder connector has cylinder connecting blocks symmetrically arranged on its far right. The cylinder connecting blocks are L-shaped and fixed on the cylinder mounting plate. The connecting flange of the cylinder connector is locked with the bottom stepped portion of the cylinder connecting block. The upper cutting blade fixing seat is slidably fixed on the guide post on its left and right sides. The bottom of the guide post is fixed on the blade holder base plate. The bottom of the upper cutting blade fixing seat locks the blade clamping plate.

[0008] Furthermore, in the prefabricated assembly, a first base is vertically fixed on the first connecting plate. The first base is fixed to the first connecting plate by a reinforcing plate. The reinforcing plate is located on the front side of the first base and has one on each side. A first slider is locked to the back of the first base. The first slider is slidably mounted on a first guide rail. The first guide rail is fixed to the front side of the lower cutter seat. A positioning groove is set at the lower part of the first connecting plate. A mounting positioning protrusion is set at the upper part of the third connecting plate. The mounting positioning protrusion is stuck in the positioning groove. The third connecting plate is locked to the lower part of the first connecting plate by bolts. A second connecting plate is locked at another part of the third connecting plate. The second connecting plate has two mounting sections, which make the second connecting plate F-shaped. Any of the mounting sections is fixed to the positioning strip by a first fixing pin. The first connecting plate is fixed to the lower cutter magnetic seat by a second fixing pin. A second connecting block is locked to the side of the first connecting plate. A second cylinder is fixed on the second cylinder mounting seat locked to the side of the cutter base plate. The plunger rod of the second cylinder is connected to the first connecting plate by a connector. The cutter base plate is hollow.

[0009] Furthermore, the angles on both sides of the upper cutter are both 2°.

[0010] Furthermore, in the lower cutter assembly, a cutter base plate is fixed on the cutter base plate, a lower cutter base is fixed above the cutter base plate, and a lower cutter is fixed on the side of the lower cutter base. The cutting edge plane of the lower cutter is parallel to and spaced apart from the cutting edge plane of the upper cutter. The cutting edge areas of the upper cutter and the lower cutter form a partially overlapping shearing mating area on the vertical projection plane.

[0011] Furthermore, the dust collection assembly includes a negative pressure dust collection hopper, a dust collection pipe, and a dust collection fan. The dust collection fan is fixed to the dust collection pipe and is connected to the first cylinder. The negative pressure dust collection hopper is fixed below the cutter base plate, directly opposite the cutter base plate's hollow section, and its side is connected to the dust collection pipe. The side wall of the negative pressure dust collection hopper has a downward slope. The inner diameter of the dust collection pipe is sequentially provided with a tapering section, a maximum inner diameter section, and a widening section along the axial direction. The inner diameter of the tapering section gradually decreases from the air inlet end to the middle, and the inner diameter of the widening section gradually increases from the maximum inner diameter section to the air outlet end. The inner diameter of the maximum inner diameter section is greater than the inner diameter at the connection between the two ends of the pipe. The tapering section and the widening section are smoothly connected by an arc transition section.

[0012] Furthermore, the second cylinder is connected to the first cylinder.

[0013] Compared with existing technologies, the low-dust, burr-free, high-precision cutting tool with electrode plates described in this utility model has the following advantages:

[0014] This invention adjusts the original cutting blade from a single-sided angled shear to a double-sided angled flat shear. During cutting, the force on the electrode sheet changes from unilateral to bilateral. When the upper cutting blade cuts, the force on both sides of the electrode sheet is symmetrical and uniform, resulting in less electrode sheet loss and fewer defects such as burrs and rough edges. The base plate of the cutting blade is perforated, and the perforated area is connected to a negative pressure dust collector to suck away the cutting dust, reducing the amount of dust falling onto the electrode sheet.

[0015] (2) The first slider and the first guide rail in this utility model cooperate to achieve precise sliding guidance, and at the same time, the rigid connection improves the stability of horizontal movement and reduces the shaking or jamming during the movement. The positioning groove at the bottom of the first connecting plate and the installation positioning protrusion of the third connecting plate form an embedded fit. The mechanical limit ensures the positional accuracy of the component during installation, avoids the deviation caused by the bolt connection for individual positioning, and improves the assembly efficiency and the coaxiality of the overall structure. The second connecting plate adopts an F-shaped double mounting section design. It is connected to the positioning strip through the first fixing pin to form a double support fixed structure, which enhances the stability of lateral positioning. It is especially suitable for working conditions that need to withstand lateral forces (such as lateral pressure during cutting). The components are connected by standard parts such as bolts and pins. Each module can be disassembled and replaced independently, which is convenient for later maintenance or upgrades. For example, when the guide rail is worn, only the first base needs to be removed to replace the guide rail, without disassembling the entire component. The double mounting section design of the F-shaped second connecting plate makes the adjustment or replacement of the positioning strip more convenient. The positioning position can be quickly adjusted by loosening the fixing pin to adapt to the processing needs of different products. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0017] In the attached diagram:

[0018] Figure 1 This is an isometric schematic diagram of the low-dust, burr-free, high-precision cutting tool for the electrode sheet described in this embodiment of the present invention;

[0019] Figure 2 This is a front view schematic diagram of the low-dust, burr-free, high-precision cutting tool for electrode sheets according to an embodiment of this utility model;

[0020] Figure 3 This is a side view of the low-dust, burr-free, high-precision cutting tool for the electrode sheet described in this embodiment of the utility model.

[0021] Figure 4 This is an isometric schematic diagram of the orderly assembly of the low-dust, burr-free, high-precision cutting tool for electrode sheets according to an embodiment of this utility model;

[0022] Figure 5 This is an isometric schematic diagram of the upper cutting blade assembly of the low-dust, burr-free, high-precision cutting tool for electrode sheets according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the installation of the lower and upper cutting blade assemblies of the low-dust, burr-free, high-precision cutting tool for electrode sheets according to an embodiment of the present invention.

[0024] Figure 7 This is a cross-sectional view at point AA in the installation diagram of the lower and upper cutting blade assemblies of the low-dust, burr-free, high-precision cutting tool for electrode sheets according to an embodiment of this utility model.

[0025] Figure 8 This is a schematic diagram of the dust extraction pipe connection for the low-dust, burr-free, high-precision cutting tool of the electrode sheet according to an embodiment of the present invention.

[0026] Figure 9 This is a top view schematic diagram of the dust extraction pipe connection of the low-dust, burr-free, high-precision cutting tool for the electrode sheet according to an embodiment of the present invention;

[0027] Figure 10 This is a cross-sectional view at point BB in the top view of the dust extraction pipe connection of the low-dust, burr-free, high-precision cutting tool for the electrode sheet according to an embodiment of this utility model.

[0028] Figure 11 This is a cross-sectional view at point CC in the top view of the dust extraction pipe connection of the low-dust, burr-free, high-precision cutting tool for the electrode sheet according to an embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. First cylinder; 2. Cylinder mounting plate; 3. First support column; 4. Cylinder connecting block; 5. Second support column; 6. Lower cutter magnetic base; 7. Positioning strip; 8. Electrode plate; 9. Cutter base plate; 10. Negative pressure dust collection hopper; 11. Upper cutter fixing seat; 12. Guide column; 13. Cylinder connector; 14. Blade holder base plate; 15. First connecting plate; 16. Second cylinder; 17. Second cylinder mounting seat; 18. Second connecting block; 19. Lower cutter holder; 20. First base; 21. Reinforcing plate; 22. First guide rail; 23. Second connecting plate; 24. Third connecting plate; 25. First slider; 26. First fixing pin; 27. Second fixing pin; 28. Blade clamping plate; 29. ​​Upper cutter; 30. Pressure plate; 31. Fixing bolt; 32. Dust collection pipe; 33. Lower cutter; 34. Dust collection fan. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] See Figures 1-11 As shown, this embodiment provides a low-dust, burr-free, high-precision cutting tool for electrode sheets, including a second support column 5, a cutting blade base plate 9, a first support column 3, a cylinder mounting plate 2, an upper cutting blade moving assembly, an upper cutting blade assembly, a leveling assembly, and a dust collection assembly. The leveling assembly, the first support column 3, the lower cutting blade assembly, and the cylinder mounting plate 2 are fixed on the upper part of the cutting blade base plate 9. The first support column 3 is symmetrically installed on the left and right sides of the cylinder mounting plate 2. The upper cutting blade moving assembly is slidably fixed between the cylinder mounting plate 2 and the cutting blade base plate 9, and the upper cutting blade moving assembly is connected to the upper cutting blade assembly. The aligning component is located on one side of the cutter base plate 9. The lower cutter component is installed opposite the upper cutter component. The electrode plate is fixed on the lower cutter magnetic base 6, and the lower cutter magnetic base 6 is symmetrically equipped with positioning strips 7. The aligning component is connected to the lower cutter magnetic base 6. The bottom of the cutter base plate 9 is fixed with a dust collection component and a second support column 5. The pressure plate 30 in the upper cutter component is fixed to the lower part of the cutter clamping plate 28 by fixing bolts 31. The upper part of the upper cutter 29 is fixed inside the cutter clamping plate 28. The pressure plate 30 is located on the feeding side of the upper cutter. The upper cutter 29 is a double-sided cutter. A spring is installed on the fixing bolts 31.

[0036] The cutter 29 is mounted inside the cutter clamp 28 via a spring-loaded fixing bolt 31. The preload provided by the spring adapts to changes in material thickness, ensuring that the blade remains in perpendicular contact with the material during cutting. The dust collection assembly is located at the bottom of the cutter base plate 9. By creating a perforation on the surface of the base plate, it can promptly remove dust particles, avoiding the risk of short circuits caused by dust adhesion.

[0037] Specifically, in this embodiment, the upper cutter moving assembly includes a first cylinder 1, a cylinder connector 13, a cylinder connecting block 4, an upper cutter fixing seat 11, and a guide post 12. The first cylinder 1 is locked onto the cylinder mounting plate 2. The cylinder connector 13 is fixed to the piston rod of the first cylinder 1. The cylinder connector 13 is symmetrically provided with cylinder connecting blocks 4 on its far right. The cylinder connecting blocks 4 are L-shaped and fixed onto the cylinder mounting plate 2. The connecting flange of the cylinder connector 13 is locked to the bottom stepped portion of the cylinder connecting block 4. The upper cutter fixing seat 11 is slidably fixed onto the guide post 12 on its left and right sides. The bottom of the guide post 12 is fixed onto the cutter holder base plate 14. The bottom of the upper cutter fixing seat 11 locks the cutter clamping plate 28.

[0038] Specifically, in this embodiment, in the prefabricated assembly, a first base 20 is vertically fixed on the first connecting plate 15. The first base 20 is fixed to the first connecting plate 15 by a reinforcing plate 21. The reinforcing plate 21 is located on the front side of the first base 20, with one on each side. A first slider 25 is locked to the back of the first base 20. The first slider 25 is slidably mounted on the first guide rail 22, which is fixed to the front side of the lower cutter holder 19. A positioning groove is set at the lower part of the first connecting plate 15, and a mounting positioning protrusion is provided on the upper part of the third connecting plate 24. The mounting positioning protrusion is engaged in the positioning groove, and the third connecting plate 24 is secured by bolts. The first connecting plate 15 is locked at the lower part, and the second connecting plate 23 is locked at another part of the third connecting plate 24. The second connecting plate 23 is provided with two mounting sections, which make the second connecting plate 23 F-shaped. Either mounting section is fixed to the positioning strip 7 by the first fixing pin 26. The first connecting plate 15 is fixed to the lower cutting blade magnetic seat 6 by the second fixing pin 27. The second connecting block 18 is locked to the side of the first connecting plate 15. The second cylinder 16 is fixed on the second cylinder mounting seat 17 locked to the side of the cutting blade base plate 9. The plunger rod of the second cylinder 16 is connected to the first connecting plate 15 by a connector. The cutting blade base plate 9 is hollow.

[0039] The first slider and the first guide rail work together to achieve precise sliding guidance, while the rigid connection improves the stability of horizontal movement and reduces shaking or jamming during movement. The positioning groove at the bottom of the first connecting plate and the mounting positioning protrusion of the third connecting plate form an embedded fit, ensuring the positional accuracy of the component during installation through mechanical limiting, avoiding deviations caused by individual positioning due to bolt connections, and improving assembly efficiency and the coaxiality of the overall structure. The second connecting plate adopts an F-shaped double mounting section design, connected to the positioning strip through the first fixing pin, forming a double-support fixing structure, enhancing the stability of lateral positioning, especially suitable for working conditions that need to withstand lateral forces (such as lateral pressure during cutting). The components are connected by standard parts such as bolts and pins, and each module (such as the first connecting plate, the third connecting plate, and the second connecting plate) can be disassembled and replaced independently, facilitating later maintenance or upgrades. For example, when the guide rail is worn, only the first base needs to be removed to replace the guide rail, without disassembling the entire component. The double mounting section design of the F-shaped second connecting plate makes the adjustment or replacement of the positioning strip more convenient, and the positioning position can be quickly adjusted by loosening the fixing pin to adapt to the processing requirements of different products.

[0040] Specifically, in this embodiment, the angles on both sides of the upper cutter 29 are both 2°.

[0041] Specifically, in this embodiment, in the lower cutter assembly, a cutter base plate 14 is fixed on the cutter base plate 9, a lower cutter base 19 is fixed above the cutter base plate 14, and a lower cutter 33 is fixed on the side of the lower cutter base 19. The cutting edge plane of the lower cutter 33 is parallel to and spaced apart from the cutting edge plane of the upper cutter 29. The cutting edge areas of the upper cutter 29 and the lower cutter 33 form a partially overlapping shearing mating area on the vertical projection plane.

[0042] Specifically, in this embodiment, the dust collection assembly includes a negative pressure dust collection hopper 10, a dust collection pipe 32, and a dust collection fan 34. The dust collection fan 34 is fixed on the dust collection pipe 32 and is connected to the first cylinder 1. The negative pressure dust collection hopper 10 is fixed below the cutter base plate 9 and directly opposite the cutter base plate 9's hollowed-out area. The side of the negative pressure dust collection hopper 10 is connected to the dust collection pipe 32. The side wall of the negative pressure dust collection hopper 10 has a downward slope. The inner diameter of the dust collection pipe 32 is provided with a tapering section, a maximum inner diameter section, and a gradually expanding section in sequence along the axial direction. The inner diameter of the tapering section gradually decreases from the air inlet end to the middle, and the inner diameter of the gradually expanding section gradually increases from the maximum inner diameter section to the air outlet end. The inner diameter value of the maximum inner diameter section is greater than the inner diameter value at the connection of the two ends of the pipe body. The tapering section and the gradually expanding section are smoothly connected by an arc transition section.

[0043] Specifically, in this embodiment, the second cylinder 16 is connected to the first cylinder 1.

[0044] In this embodiment, a sensor is also provided to detect the movement position of the electrode sheet. When the sensor detects that the electrode sheet has reached the specified cutting length, the PLC is triggered, the upper cutter begins cutting, the lower cutter remains stationary, and the upper cutter falls down to cut. The cut dust falls and is sucked away by the negative pressure pipeline at the bottom, and then the cutting of the next electrode sheet continues. The new cutter improves the cutting quality and reduces the scrap rate of electrode sheets, which is of great significance for the cutting of lithium-ion battery electrode sheets.

[0045] The original cutter was changed from a single-sided angled shear to a double-sided flat shear. During cutting, the force on the electrode sheet changes from unilateral to bilateral. When the upper cutter cuts, the force on both sides of the electrode sheet is symmetrical and even, resulting in less electrode sheet loss and fewer defects such as burrs and rough edges. The bottom plate of the cutter is hollowed out, and a vacuum fan 34 is connected to the hollowed-out area to collect dust under negative pressure, sucking away the cutting dust, reducing the amount of dust falling onto the electrode sheet, and reducing subsequent short circuits and self-discharge abnormalities in the battery cells.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrode sheet low-dust burr-free high-precision cutting tool, characterized by, The device includes a second support column, a cutter base plate, a first support column, a cylinder mounting plate, an upper cutter moving assembly, an upper cutter assembly, a leveling assembly, and a dust collection assembly. The leveling assembly, the first support column, the lower cutter assembly, and the cylinder mounting plate are fixed to the upper part of the cutter base plate. The first support column is symmetrically installed on the left and right sides of the cylinder mounting plate. The upper cutter moving assembly is slidably fixed between the cylinder mounting plate and the cutter base plate, and is connected to the upper cutter assembly. The leveling assembly is located on one side of the cutter base plate. The lower cutter assembly is installed directly opposite the upper cutter assembly. Electrode plates are fixed to the lower cutter magnetic base, and symmetrical positioning strips are set on the lower cutter magnetic base. The leveling assembly is connected to the lower cutter magnetic base. The dust collection assembly and the second support column are fixed to the bottom of the cutter base plate. A pressure plate in the upper cutter assembly is fixed below the cutter clamping plate by fixing bolts. The upper part of the upper cutter is fixed inside the cutter clamping plate. The pressure plate is located on the feed side of the upper cutter. The upper cutter is a double-sided cutter. Springs are installed on the fixing bolts.

2. The electrode sheet low-dust and burr-free high-precision cutting tool according to claim 1, characterized by The upper cutter moving assembly includes a first cylinder, a cylinder connector, a cylinder connecting block, an upper cutter fixing seat, and a guide post. The first cylinder is locked onto the cylinder mounting plate. The cylinder connector is fixed on the piston rod of the first cylinder. The cylinder connector has cylinder connecting blocks symmetrically arranged on the far right. The cylinder connecting blocks are L-shaped and fixed on the cylinder mounting plate. The connecting flange of the cylinder connector is locked with the bottom stepped portion of the cylinder connecting block. The upper cutter fixing seat is slidably fixed on the guide post on the left and right sides. The bottom of the guide post is fixed on the cutter holder base plate. The bottom of the upper cutter fixing seat locks the cutter clamping plate.

3. The electrode sheet low-dust no-burr high-precision cutting tool according to claim 1, characterized by, In the assembly, a first base is vertically fixed to a first connecting plate. The first base is fixed to the first connecting plate by a reinforcing plate. The reinforcing plate is located on the front side of the first base, with one on each side. A first slider is locked to the back of the first base. The first slider is slidably mounted on a first guide rail. The first guide rail is fixed to the front side of the lower cutter holder. A positioning groove is set at the lower part of the first connecting plate. A mounting positioning protrusion is set at the upper part of the third connecting plate. The mounting positioning protrusion is stuck in the positioning groove. The third connecting plate is locked to the lower part of the first connecting plate by bolts. A second connecting plate is locked at another part of the third connecting plate. The second connecting plate has two mounting sections, which make the second connecting plate F-shaped. Any of the mounting sections is fixed to a positioning strip by a first fixing pin. The first connecting plate is fixed to the lower cutter magnetic seat by a second fixing pin. A second connecting block is locked to the side of the first connecting plate. A second cylinder is fixed to a second cylinder mounting seat locked to the side of the cutter base plate. The plunger rod of the second cylinder is connected to the first connecting plate by a connector. The cutter base plate is hollow.

4. The electrode sheet low-dust no-burr high-precision cutting tool according to claim 1, characterized by, The angles on both sides of the upper cutter are 2°.

5. The electrode sheet low-dust no-burr high-precision cutting tool according to claim 1, characterized by, In the lower cutter assembly, a cutter base plate is fixed on the cutter base plate, a lower cutter base plate is fixed above the cutter base plate, and a lower cutter is fixed on the side of the lower cutter base plate. The cutting edge plane of the lower cutter is parallel to and spaced apart from the cutting edge plane of the upper cutter. The cutting edge areas of the upper cutter and the lower cutter form a partially overlapping shearing mating area on the vertical projection plane.

6. The electrode sheet low-dust no-burr high-precision cutting tool according to claim 1, characterized by, The vacuum assembly includes a negative pressure vacuum hopper, a vacuum pipe, and a vacuum fan. The vacuum fan is fixed to the vacuum pipe and connected to a first cylinder. The negative pressure vacuum hopper is fixed below the cutter base plate, directly opposite the cutter base plate's cutout, and its side is connected to the vacuum pipe. The side wall of the negative pressure vacuum hopper has a downward slope. The vacuum pipe has a tapered section, a maximum inner diameter section, and a widening section arranged sequentially along the axial direction. The inner diameter of the tapered section gradually decreases from the air inlet end to the middle, and the inner diameter of the widening section gradually increases from the maximum inner diameter section to the air outlet end. The inner diameter of the maximum inner diameter section is greater than the inner diameter at the connection between the two ends of the pipe. The tapered section and the widening section are smoothly connected by an arc transition section.

7. The low-dust, burr-free, high-precision cutting tool for electrode sheets according to claim 1, characterized in that, The second cylinder is connected to the first cylinder.

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