Pole piece cutter of winding machine

Abstract

The utility model relates to the technical field of lithium battery production, in particular to a pole piece cutter of a winding machine. According to the technical scheme, the pole piece cutter of the winding machine comprises a limiting groove, a protruding block, a cutter frame and a cutter body, the limiting groove is formed in the cutter frame, the protruding block is arranged on the cutter body, the cutter body is installed on the cutter frame in a limiting mode through mutual matching of the protruding block and the limiting groove, blades are arranged on the two sides of the cutter body, and the angle of the blade position of each blade is 89 degrees. According to the utility model, the 45-degree upper cutter is changed into the 89-degree upper cutter, so that the problem of material falling can be solved, and meanwhile, the service life of the cutter is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a pole piece cutter of a winding machine. Background Art

[0002] At present, the existing negative electrode cutting knife scheme for EV winding machines is as follows: the upper blade angle of the existing negative electrode cutting knife is 45°, and the lower blade adopts a 90° flat blade. When cutting the pole piece, the beveled edge of the upper cutting knife tip will squeeze the pole piece coating, causing the coating to bulge and loosen. In addition, the 45° blade tip is easy to wear and has a low service life. Utility Model Content

[0003] The utility model provides a pole piece cutter for a winding machine, which solves the above-mentioned technical problems.

[0004] The utility model solves the above-mentioned technical problems as follows:

[0005] A pole piece cutter for a winding machine comprises a limiting groove, a protrusion, a knife holder and a knife body, wherein the limiting groove is arranged on the knife holder, the protrusion is arranged on the knife body, the knife body is installed on the knife holder through the cooperation between the protrusion and the limiting groove, and blades are arranged on both sides of the knife body.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, a fixing hole is formed through the tool holder, and the tool holder is fixed to the cutting machine via the fixing hole and bolts.

[0008] The beneficial effects of adopting the above further scheme are:

[0009] Stability and rigidity: The knife holder is connected to the cutting machine through the through-holes and fixed by bolts, which provides a more solid and stable support structure. This is crucial for high-speed cutting operations because it can reduce vibration and shaking, ensure that the knife holder will not move unexpectedly during operation, and thus improve the rigidity and stability of the equipment.

[0010] Accurate positioning: The design of the fixing holes allows the tool holder to be accurately positioned on the cutting machine. This is critical to ensure the accuracy and consistency of the tool during the cutting process. Accurate positioning helps prevent slight deviations in the tool position, thereby avoiding inaccurate cutting and reducing scrap rates.

[0011] Easy to install and maintain: The fixing hole and bolt connection is a relatively simple and reliable connection method, which is convenient for installation and maintenance. This simplifies the installation process of the tool holder, and when the tool holder needs to be replaced or maintained, the operation is relatively easy, reducing maintenance time.

[0012] Applicable to various working conditions: This fixing method is suitable for different types of cutting machines because it provides a universal connection method. This versatility allows the tool holder to adapt to cutting machines of different models and specifications, increasing its flexibility and applicability.

[0013] Improve work efficiency: The stable fixed structure ensures the accurate positioning and stable operation of the cutter, thus improving the work efficiency of the entire cutting system. Reducing downtime caused by unstable connections helps to improve productivity.

[0014] Furthermore, the blade holder and the blade body are fixed by bolt connection.

[0015] The beneficial effects of adopting the above further scheme are:

[0016] Disassembly: Bolting the tool holder and the blade allows for easy disassembly of the connection between them. This is very convenient for tool replacement, cleaning or maintenance, reducing downtime and improving production efficiency.

[0017] Adjustment flexibility: With bolt connections, the tool position can be fine-tuned or replaced relatively easily. This flexibility is very important for cutting different work requirements or material types, and can be adjusted as needed to achieve more precise cutting.

[0018] Easy to install: Bolt connection provides a relatively simple installation method. This allows the connection between the knife holder and the knife body to be completed in a short time, thus reducing the complexity of equipment installation.

[0019] Stability and rigidity: Bolted connections provide strong structural stability, ensuring a secure and reliable connection between the blade holder and the blade body. This is very important for high-speed cutting operations, as it reduces vibration and shaking, and maintains stability and rigidity during operation.

[0020] Reliability: Bolted connections are a common and reliable connection method. This means that under normal operating conditions, the connection is not easy to loosen or break, thus reducing the risk of failure due to connection problems.

[0021] Strong adaptability: Due to the versatility of bolt connection, it is suitable for various types and specifications of tool holders and blades. This versatility makes this connection method more flexible and suitable for different cutting processes and application scenarios.

[0022] Furthermore, the blades are symmetrically distributed on both sides of the blade body.

[0023] The beneficial effects of adopting the above further scheme are:

[0024] Uniform force: The symmetrical blade design can evenly distribute the cutting force on the blade. This helps to reduce the distortion or deformation of the tool during the cutting process, maintain the stability of the entire blade, and improve the accuracy and consistency of cutting.

[0025] Reduce vibration and shaking: Symmetrical blade distribution helps balance the forces generated during cutting. This reduces the vibration and shaking that may occur during operation of the tool and the tool holder, improves the stability of the entire system, and helps prevent cutting errors.

[0026] Increase cutting accuracy: The symmetrical distribution of the blades on both sides helps to improve the cutting accuracy of the tool. Symmetry ensures that the blades are subjected to balanced forces during the cutting process, reducing cutting deviations caused by uneven forces, thereby improving product quality.

[0027] Extend tool life: Symmetrical blade distribution can evenly share the wear and pressure during cutting, slowing down the wear of the blade. This helps to extend the service life of the tool, reduce the frequency of blade replacement, and reduce maintenance costs.

[0028] Strong adaptability: The symmetrically distributed design is suitable for cutting workpieces of different shapes and sizes. Whether processing wide or narrow materials, the symmetrically distributed blades can maintain relatively consistent cutting performance, improving the universal adaptability of the tool.

[0029] Reduced energy consumption: Symmetrical design helps reduce friction and energy consumption during cutting. The blade is subjected to evenly distributed force and friction loss is relatively small, which helps reduce energy consumption and improve energy efficiency.

[0030] Furthermore, the fixing holes are evenly distributed on the tool holder.

[0031] The beneficial effects of adopting the above further scheme are:

[0032] Uniform force: The fixing holes are evenly distributed on the tool holder, which can ensure that the force on the connecting bolts is evenly distributed. This helps to reduce the deformation or distortion of the tool holder during operation and improve the stability of the entire tool system.

[0033] Reduced vibration and shaking: The even distribution of fixing holes helps to reduce the vibration and shaking of the tool holder when it is running at high speed. This is critical to maintain cutting accuracy and prevent accidental contact between the tool and the workpiece.

[0034] Improve positioning accuracy: The uniform distribution of fixing holes helps ensure that the tool holder can be accurately positioned on the cutting machine. This is essential to ensure the accuracy of the tool's position and direction during the cutting process, thereby improving the positioning accuracy of the entire system.

[0035] Strong adaptability: The design of evenly distributed fixing holes makes the tool holder suitable for cutting machines of various sizes and shapes. Whether processing large or small workpieces, the evenly distributed fixing holes help ensure that the tool holder can be tightly connected to the cutting machine, improving the universal adaptability of the equipment.

[0036] Simplified installation process: The even distribution of fixing holes simplifies the installation process of the tool holder. Operators can more easily find and use the fixing holes to ensure that the tool holder is correctly and quickly installed on the cutting machine. This helps reduce the time and labor costs of equipment installation.

[0037] Improve system stability: Evenly distributed fixing holes help improve the stability of the entire cutting system. The stable tool holder connection helps reduce the swing and fluctuation of the tool during operation, thereby improving the stability and accuracy of cutting.

[0038] Furthermore, the contact surface between the tool holder and the tool body is an inclined surface.

[0039] The beneficial effects of adopting the above further scheme are:

[0040] Increased contact area: The bevel design can increase the contact area between the tool holder and the blade. This helps to improve the stability and tightness of the connection, reduce friction at the connection, and thus enhance the stability of the entire tool system.

[0041] Reduce stress on the contact surface: The bevel design can disperse the force of the connection and reduce the local stress on the contact surface. This is crucial to reduce the wear of the connection point and extend the life of the knife holder and the blade.

[0042] Prevent loosening: The design of the beveled contact surface helps prevent the tool holder and the blade from loosening during operation. By increasing the contact area, the impact of vibration and impact on the connection can be effectively reduced, thereby improving the firmness of the connection.

[0043] Improved connection stability: The bevel design increases the surface friction of the connection, helping to improve the friction between the knife holder and the blade. This makes the connection more secure and helps prevent instability during cutting operations.

[0044] Reduced friction loss: The bevel contact surface design reduces friction between contact points, which helps reduce friction loss. This is beneficial for reducing energy consumption, extending tool life and reducing maintenance costs.

[0045] Improve cutting accuracy: The stable bevel contact between the knife holder and the blade helps to maintain the accurate position of the cutting tool. This helps to improve cutting accuracy, reduce cutting errors and improve product quality.

[0046] Furthermore, the blade angle of the blade is 89°.

[0047] The beneficial effects of adopting the above further scheme are:

[0048] Increase contact area: The larger edge angle of the blade can increase the surface area of ​​contact between the blade and the workpiece. This helps to disperse the pressure during the cutting process, reduces the local squeezing force on the workpiece, and helps prevent the cut surface from falling off.

[0049] Improve cutting efficiency: A larger blade angle helps cut a larger area, increasing the effective surface area of ​​contact between the tool and the workpiece. This can speed up the cutting process, improve cutting efficiency, and reduce production costs.

[0050] Reduce the extrusion force during cutting: Due to the large angle of the blade, the blade contacts a larger area of ​​the workpiece during cutting, and the extrusion force on the workpiece is smaller. This helps to reduce the deformation of the material during cutting and improve the cutting accuracy and workpiece quality.

[0051] Reduce friction resistance: A larger edge angle can reduce the friction resistance between the tool and the workpiece. This helps to reduce energy loss and improve energy efficiency, while also reducing blade wear and extending tool life.

[0052] Preventing material loss on the cut surface: The 89° blade angle increases the contact area of ​​the electrode coating on the bevel edge of the cutter when cutting the anode sheet, thereby effectively preventing material loss on the cut surface. This is very important for processes that require high precision and surface quality.

[0053] Improved wear resistance of the tool: Compared with a sharper angle, a larger edge angle helps to evenly distribute the wear during the cutting process. This can extend the life of the tool and reduce maintenance costs.

[0054] The beneficial effects of the utility model are:

[0055] The importance of limit installation: The matching design of the limit groove and the protrusion helps to ensure that the blade maintains the correct position during operation. This is crucial for accurate cutting, especially when dealing with thin and fragile anode sheets. Any slight misalignment may result in cutting errors or waste.

[0056] Mounting holes and bolted connections provide additional structural support by bolting the blade holder to the cutter, ensuring that the cutter does not become unstable during high-speed cutting. This structural stability is critical to ensure that the blade accurately executes the intended cutting path.

[0057] Symmetrical blades: The symmetrical blades on both sides of the blade help to evenly distribute the cutting force and reduce vibration and imbalance during the cutting process. This helps to improve the accuracy and consistency of cutting and reduce the scrap rate.

[0058] Blade angle selection: The blade angle of 89° is designed to take into account the characteristics of the anode sheet. This angle not only increases the contact area of ​​the bevel edge with the anode sheet coating, but also reduces the friction resistance during cutting, reduces the friction loss between the blade tip and the anode sheet, and helps improve cutting efficiency.

[0059] Advantages of wear resistance: The design of the 89° blade not only makes it more suitable for contact with materials such as anode sheets, but also has good wear resistance. This means that the blade can still maintain good cutting performance after long-term use, reducing the frequency of maintenance and blade replacement, and improving the reliability of the equipment.

[0060] Reduce material extrusion pressure: Due to the special angle of the blade design, the contact area between the blade tip and the anode sheet is larger during cutting, but the relative extrusion pressure on the material is smaller. This helps to ensure that the material will not be excessively damaged during the cutting process and maintain the shape and structural integrity of the anode sheet.

[0061] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0063] In the attached picture:

[0064] Figure 1 It is a schematic diagram of the axial side appearance of the utility model.

[0065] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0066] 1. Limiting groove; 2. Bump; 3. Knife holder; 4. Fixing hole; 5. Knife blade; 6. Knife body. DETAILED DESCRIPTION

[0067] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0068] See also Figure 1 As shown, the embodiments provided by the utility model:

[0069] Embodiment 1

[0070] A pole piece cutter for a winding machine comprises a limit groove 1, a protrusion 2, a knife holder 3 and a blade 6. The limit groove 1 is provided on the knife holder 3, and the blade 6 is provided with a protrusion 2. The blade 6 is limitedly installed on the knife holder 3 through the cooperation between the protrusion 2 and the limit groove 1. The knife holder 3 and the blade 6 are fixed by bolt connection. The knife holder 3 and the blade 6 are connected by bolts so that the connection between them can be easily disassembled. This is very convenient for tool replacement, cleaning or maintenance, reducing downtime and improving production efficiency. Using bolt connection, it is relatively easy to fine-tune or replace the tool position. This flexibility is very important for cutting with different work requirements or material types, and can be adjusted as needed to achieve more accurate cutting. Bolt connection provides a relatively simple installation method. This allows the connection between the knife holder 3 and the blade 6 to be completed in a short time, thereby reducing the complexity of equipment installation. Bolt connection can provide strong structural stability to ensure that the connection between the knife holder 3 and the blade 6 is firm and reliable. This is very important for high-speed cutting operations, which can reduce vibration and shaking and maintain the stability and rigidity of the equipment during operation. Bolt connection is a common and reliable connection method. This means that under normal operating conditions, the connection is not easy to loosen or break, thereby reducing the risk of failure caused by connection problems. Due to the versatility of the bolt connection, it is suitable for various types and specifications of tool holders 3 and blades 6. This versatility makes this connection method more flexible and suitable for different cutting processes and application scenarios. The tool holder 3 is provided with a fixing hole 4, and the tool holder 3 is fixed to the cutting machine through the fixing hole 4 and bolts. The tool holder 3 is connected to the cutting machine through the fixing hole 4 and fixed by bolts. This connection method provides a more solid and stable support structure. This is crucial for high-speed cutting operations because it can reduce vibration and shaking, ensure that the tool holder 3 does not move accidentally during operation, thereby improving the rigidity and stability of the equipment. The design of the fixing hole 4 allows the tool holder 3 to be accurately positioned on the cutting machine. This is critical to ensure the accuracy and consistency of the tool during the cutting process. Accurate positioning helps prevent slight deviations in the tool position, thereby avoiding inaccurate cutting and reducing scrap rates. The fixing hole 4 and bolt connection is a relatively simple and reliable connection method that is easy to install and maintain. This simplifies the installation process of the tool holder 3, and when the tool holder 3 needs to be replaced or maintained, the operation is relatively easy, reducing the maintenance time. This fixing method is suitable for different types of cutting machines because it provides a universal connection method. This versatility allows the tool holder 3 to adapt to cutting machines of different models and specifications, increasing its flexibility and applicability. The stable fixing structure ensures the accurate positioning and stable operation of the tool, thereby improving the working efficiency of the entire cutting system. Reducing the downtime caused by unstable connection helps to improve productivity. Blades 5 are provided on both sides of the blade body 6, and the blades 5 are symmetrically distributed on both sides of the blade body 6. The symmetrically distributed blade 5 design can make the cutting force evenly distributed on the blade body 6.This helps to reduce the distortion or deformation of the tool during the cutting process, maintain the stability of the entire blade 5, and improve the accuracy and consistency of cutting. The symmetrically distributed blades 5 help to balance the forces generated during the cutting process. This reduces the vibration and shaking that may occur in the tool and the tool holder 3 during operation, improves the stability of the entire system, and helps prevent cutting errors. The symmetrical distribution of the blades 5 on both sides helps to improve the cutting accuracy of the tool. Symmetry ensures that the force on the blade 5 during the cutting process is balanced, reduces the cutting deviation caused by uneven force, and thus improves the quality of the product. The symmetrical distribution of the blade 5 can evenly share the wear and pressure during the cutting process and slow down the wear rate of the blade 5. This helps to extend the service life of the tool, reduce the frequency of replacing the blade 5, and reduce maintenance costs. The symmetrically distributed design is suitable for cutting workpieces of different shapes and sizes. Whether processing wide or narrow materials, the symmetrically distributed blades 5 can maintain relatively consistent cutting performance and improve the universal adaptability of the tool. The symmetrical design helps to reduce friction resistance and energy consumption during cutting. The blade 5 is subjected to uniformly distributed force, and the friction loss is relatively small, which helps to reduce energy consumption and improve energy efficiency. The blade angle of the blade 5 is 89°, which increases the area of ​​the electrode coating contacted by the bevel edge of the cutter when cutting the anode sheet. When cutting the electrode sheet, the area of ​​the electrode sheet contacted by the tip of the knife is large and the extrusion force on the material is small, which can avoid material falling off the cut surface of the electrode sheet. The 89° knife is more wear-resistant.

[0071] When a pole piece cutter of a winding machine based on Example 1 is used:

[0072] Importance of limit installation: The matching design of the limit groove 1 and the protrusion 2 helps to ensure that the blade 6 maintains an accurate position during operation. This is essential for accurate cutting, especially when dealing with thin and fragile anode sheets, any slight misalignment may result in cutting errors or waste.

[0073] Fixing holes 4 and bolt connection stability: Fixing holes 4 provide additional structural support by bolting the blade holder 3 to the cutting machine to ensure that the cutter does not become unstable during high-speed cutting. This structural stability is critical to ensure that the blade 5 accurately executes the intended cutting path.

[0074] Symmetrical distribution of blades 5: The design of symmetrically distributed blades 5 on both sides of the blade 6 helps to evenly distribute the cutting force and reduce vibration and imbalance during the cutting process. This helps to improve the accuracy and consistency of cutting and reduce the scrap rate.

[0075] Blade 5 angle selection: The design of blade 5 angle of 89° takes into account the characteristics of the anode sheet. This angle not only increases the contact area of ​​the bevel edge with the anode sheet coating, but also reduces the friction resistance during cutting, reduces the friction loss between the blade tip and the anode sheet, and helps improve cutting efficiency.

[0076] Advantages of wear resistance: The design of the 89° blade 5 not only makes it more suitable for contact with materials such as anode sheets, but also has good wear resistance. This means that the blade 5 can still maintain good cutting performance after long-term use, reducing the frequency of maintenance and replacement of the blade 5 and improving the reliability of the equipment.

[0077] Reduce material extrusion pressure: Due to the special angle of the blade 5, the contact area between the blade tip and the anode sheet is larger during cutting, but the relative extrusion pressure on the material is smaller. This helps to ensure that the material will not be excessively damaged during the cutting process and maintain the shape and structural integrity of the anode sheet.

[0078] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A pole piece cutter for a winding machine, characterized in that: The invention comprises a limiting groove (1), a protrusion (2), a knife holder (3) and a blade (6); the limiting groove (1) is provided on the knife holder (3); the blade (6) is provided with a protrusion (2); the blade (6) is mounted on the knife holder (3) by means of the protrusion (2) and the limiting groove (1) cooperating with each other in a limiting manner; and blades (5) are provided on both sides of the blade (6).

2. A pole piece cutter for a winding machine according to claim 1, characterized in that: The tool holder (3) is provided with a fixing hole (4) extending therethrough, and the tool holder (3) is fixed to the cutting machine via the fixing hole (4) and bolts.

3. The pole piece cutter of a winding machine according to claim 1, characterized in that: The blade holder (3) and the blade body (6) are connected and fixed by bolts.

4. The pole piece cutter of a winding machine according to claim 1, characterized in that: The blades (5) are symmetrically distributed on both sides of the blade body (6).

5. The pole piece cutter of a winding machine according to claim 2, characterized in that: The fixing holes (4) are evenly distributed on the tool holder (3).

6. The pole piece cutter of a winding machine according to claim 1, characterized in that: The contact surface between the knife holder (3) and the knife body (6) is an inclined surface.

7. The pole piece cutter of a winding machine according to claim 1, characterized in that: The blade angle of the blade (5) is 89°.

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