Battery pole piece cutting and rounding cutter

Abstract

The utility model provides a battery pole piece cutting and rounding cutter which comprises a lower cutter body, two sets of blade structures are symmetrically arranged on the lower cutter body, the two sets of blade structures are in a V shape, and each set of blade structure comprises a chamfering blade part and a cutting blade part. The chamfering blade part and the cutting blade part in the first group of blade structures are matched to cut off one battery pole piece and perform chamfering treatment on the cut-off edge of the battery pole piece, and meanwhile, the chamfering blade part and the cutting blade part in the second group of blade structures are matched to cut off the other battery pole piece and perform chamfering treatment on the cut-off edge of the battery pole piece; the two blade structures are symmetrically arranged. The cutting and rounding machine integrates the cutting and rounding functions, and the production efficiency is remarkably improved. The two groups of symmetrically designed blade structures ensure that the adjacent side parts of the battery pole piece can be simultaneously and independently cut and chamfered, so that the cutting precision is improved, the uniformity and consistency of the chamfered corner are ensured, and the overall quality of the battery pole piece is further improved.

Description

Technical Field

[0001] This application relates to the field of battery electrode sheet processing, and particularly to a cutting and chamfering cutter for battery electrode sheets. Background Art

[0002] After slurry coating, drying, and rolling of the battery electrode sheet, a multi-layer composite structure of a current collector and two-sided coatings is formed. According to the design structure and specifications of the battery, the electrode sheet needs to be cut by a cutter. Common cutting methods include circular shear slitting, die punching, and laser cutting.

[0003] In the production process of battery electrode sheets, cutting and chamfering are two key and interrelated technological steps. Traditionally, these two steps are usually completed in two different dies, requiring two independent operations, which not only increases the complexity of the production process but also may affect production efficiency and product quality. Summary of the Utility Model

[0004] The purpose of this application is to provide a cutting and chamfering cutter for battery electrode sheets, which integrates the functions of cutting and chamfering, simplifies die replacement and two-step operations in the traditional process, and significantly improves production efficiency. Its symmetrically designed two sets of blade structures ensure that the adjacent sides of the battery electrode sheet can simultaneously and independently complete cutting and chamfering processing, improving cutting accuracy, ensuring the uniformity and consistency of chamfering, and thus enhancing the overall quality of the battery electrode sheet.

[0005] A cutting and chamfering cutter for battery electrode sheets includes a lower cutter body, on which two sets of blade structures are symmetrically arranged. The two sets of blade structures are in a V shape. Each set of blade structures includes a chamfering blade part and a cutting blade part. The chamfering blade part and the cutting blade part in the first set of blade structures cooperate to cut one battery electrode sheet and chamfer its cut edge. At the same time, the chamfering blade part and the cutting blade part in the second set of blade structures cooperate to cut the other battery electrode sheet and chamfer its cut edge. The two sets of blade structures are symmetrically arranged to ensure that the adjacent sides of the two battery electrode sheets can simultaneously and independently complete cutting and chamfering processing.

[0006] Further, the cutting blade parts are all inclined.

[0007] Further, the chamfering blade parts are respectively arranged on both sides of the cutting blade parts.

[0008] Further, guiding parts are respectively arranged on both sides of the lower cutter body.

[0009] Further, the guiding parts are in a V shape.

[0010] Further, a material discharging ejector pin is arranged on the lower cutter body, and the material discharging ejector pin is located between the two sets of cutting blade structures.

[0011] Further, the blanking ejector pin includes a first ejector pin and a second ejector pin, and the length of the first ejector pin is less than that of the second ejector pin.

[0012] Further, there are 2 first ejector pins respectively close to the chamfered cutting edge part, and 3 second ejector pins evenly distributed between the first ejector pins.

[0013] Further, an air blowing hole is also arranged on the lower cutting tool body.

[0014] Further, the air blowing hole is located between the cutting edges of the cutting tool.

[0015] The beneficial effects of the present application are as follows:

[0016] (1) By integrating the functions of blanking and rounding the corners, the present application reduces the complexity of replacing the mold and performing two-step operations in the traditional process, thus significantly improving the production efficiency.

[0017] (2) The symmetrical design of the two groups of cutting edge structures in the present application ensures that the adjacent side parts of the two battery pole pieces can complete the blanking and rounding the corners processing simultaneously and independently. This not only improves the blanking accuracy but also ensures the uniformity and consistency of the rounded corners, thereby improving the overall quality of the battery pole pieces. Description of the Drawings

[0018] Figure 1 It is a schematic diagram when blanking and rounding the corners a of the battery pole piece c provided by an embodiment of the present application;

[0019] Figure 2 It is a three-dimensional structure schematic diagram of the blanking and rounding the corners cutting tool for the battery pole piece provided by an embodiment of the present application;

[0020] Figure 3 It is a three-dimensional structure schematic diagram of the blanking and rounding the corners cutting tool for the battery pole piece provided by an embodiment of the present application;

[0021] Figure 4 It is a front view of the blanking and rounding the corners cutting tool for the battery pole piece provided by an embodiment of the present application;

[0022] Figure 5 It is a three-dimensional structure schematic diagram of the blanking and rounding the corners cutting tool for the battery pole piece provided by an embodiment of the present application, which is provided with the first ejector pin, the second ejector pin and the air blowing hole;

[0023] Figure 6 It is a sectional view of the blanking and rounding the corners cutting tool for the battery pole piece provided by an embodiment of the present application, which is provided with the first ejector pin, the second ejector pin and the air blowing hole;

[0024] Description of the reference numerals:

[0025] 11. Lower cutting tool body; 12. First ejector pin; 13. Second ejector pin; 14. Air blowing hole;

[0026] 111. Chamfering blade part; 112. Cutting blade part; 113. Guide part; Detailed implementation mode

[0027] The terms used in the implementation mode part of this application are only used to explain the specific embodiments of this application, rather than aiming to limit this application. The implementation mode of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0028] As Figure 1 shown, it is necessary to cut and chamfer the battery pole piece c, and waste b will be formed after cutting.

[0029] As Figure 2 shown, a cutting and chamfering cutter for battery pole pieces includes a lower cutting tool body 11. The top of the lower cutting tool body 11 is matched with the corresponding upper cutting tool groove 121 on the upper template 12 to cut and chamfer two adjacent battery pole pieces.

[0030] As Figure 3 shown, among them, two groups of blade structures are symmetrically arranged on the lower cutting tool body 11. The two groups of blade structures are in a V shape. Each group of blade structures includes a chamfering blade part 111 and a cutting blade part 112. The chamfering blade part 111 and the cutting blade part 112 in the first group of blade structures cooperate to cut one of the battery pole pieces and chamfer the cutting edge thereof. At the same time, the chamfering blade part 111 and the cutting blade part 112 in the second group of blade structures cooperate to cut the other battery pole piece and chamfer the cutting edge thereof. The two groups of blade structures are symmetrically arranged to ensure that the adjacent sides of the two battery pole pieces can be cut and chamfered simultaneously and independently.

[0031] As Figure 4 shown, in this embodiment, the cutting blade parts 112 are all inclined, that is, gradually decreasing from left to right. The inclined blades can gradually cut into the material during the cutting process, rather than cutting vertically at one time, thereby reducing the force required for cutting.

[0032] As Figure 3 shown, the inclined blades can more effectively disperse the stress during the cutting process and reduce the tearing or deformation of the material during cutting. This helps to ensure the flatness and accuracy of the cut surface, thereby improving the overall quality of the battery pole piece.

[0033] As Figure 3As shown, in this embodiment, the chamfered blade portions 111 are respectively arranged on both sides of the cutting blade portion 112, that is, the lower cutting blade body 11 is provided with four chamfered blade portions 111. By integrating the chamfered blade portions 111 and the cutting blade portion 112, it can be ensured that the edges of the battery electrode plates can be subjected to consistent chamfering treatment after each cutting. This consistency is crucial for ensuring the quality and performance of the battery electrode plates.

[0034] As Figure 3 shown, in this embodiment, guiding portions 113 are respectively arranged on both sides of the lower cutting blade body 11. The arrangement of the guiding portions 113 can guide the moving direction of the lower cutting blade during the cutting process, ensuring the accuracy and precision of the cutting. Especially when the die is inclined, the guiding portions 113 can correct the offset that may be caused by the inclination and maintain the linearity and consistency of the cutting.

[0035] As Figure 3 shown, in this embodiment, the guiding portion 113 is in a V shape. The shape of the guiding portion 113 matches the shape of the blade structure, which helps to maintain the stability and precision during the cutting process. When the blade cuts along a V-shaped path, the V-shaped guiding portion 113 can provide corresponding guidance to ensure that the cutting force and the guiding force are in the same direction, thereby reducing the deviation and error during cutting.

[0036] As Figure 5 shown, in this embodiment, the lower cutting blade assembly further includes a blanking ejector pin, and the blanking ejector pin is located between two groups of cutting blade structures. The blanking ejector pin is located between two groups of cutting blade structures, which helps to eject the waste material from between the blades during the cutting process, ensuring that the cut material does not get stuck between the blades, thereby maintaining the continuity and smoothness of the cutting.

[0037] Due to the presence of the blanking ejector pin, there is no need to frequently stop the machine to clean the waste material stuck between the blades during the cutting process, thereby reducing the production interruption time and improving the production efficiency.

[0038] As Figure 5 shown, in this embodiment, the blanking ejector pin includes a first ejector pin 12 and a second ejector pin 13, and the length of the first ejector pin 12 is less than the length of the second ejector pin 13. The width of the waste material of the middle battery electrode plate is smaller, so a longer ejector pin (i.e., the second ejector pin 13) is required to ensure that the waste material can be effectively ejected. The longer ejector pin can provide a greater acting force, enabling the waste material to be smoothly discharged from the cutting blade structure. The width of the waste material of the side battery electrode plate is larger and is relatively easier to be ejected. Therefore, a shorter ejector pin (i.e., the first ejector pin 12) can be used to complete this task. The shorter ejector pin is equally effective in ejecting the side waste material and may be more flexible and easier to control.

[0039] As Figure 5As shown, in this embodiment, there are 2 first ejector pins 12 respectively close to the chamfered cutting edge portion 111, and 3 second ejector pins 13 evenly distributed between the first ejector pins 12.

[0040] As Figure 6 shown, in this embodiment, an air blowing hole 14 is further provided on the lower cutting tool body 11. The settings for the air blowing hole 14 to achieve the air blowing function mainly include the following steps: First, prepare a stable air source, such as an air compressor, to provide compressed air; Second, design an air flow channel on the lower die bottom plate to ensure that it is connected to the air blowing hole 14 on the lower cutting tool body 11; Then, tightly connect the air source and the air flow channel through an air pipe to realize the air blowing function of the air blowing hole 14.

[0041] During the cutting process, a large amount of chips and dust will be generated. The air blowing hole 14 can effectively blow away these chips and dust by blowing out gas, keeping the cutting area clean. This not only helps to keep the working environment tidy, but also avoids the damage of chips and dust to the equipment and operators.

[0042] In some cases, the cut material may adhere to the cutting edge or the equipment due to static electricity or other reasons. The gas blown out by the air blowing hole 14 can effectively break this adhesion, ensuring that the cut material can fall off smoothly, thereby improving production efficiency.

[0043] As Figure 6 shown, in this embodiment, the air blowing hole 14 is located between the cutting edges of the cutting tool. The air blowing hole 14 is aligned with the middle of the waste material, and can blow away the waste material more specifically. Since the waste material is usually cut from the cutting edge portion and its position is exactly between the cutting edges, such a design can ensure that the waste material is effectively blown away from the cutting area.

[0044] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or an indirect connection through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0045] The device or element referred to in the embodiments of the present application or implied must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and precisely defined.

[0046] In the description and claims of the embodiments of the present application and the above-mentioned drawings, the terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein. In addition, the terms "may include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application and are not intended to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pole cutting and rounding cutter, characterized in that: It comprises a lower cutting knife body, on which two sets of blade structures are symmetrically arranged, the two sets of blade structures are V-shaped, each set of blade structures comprises a chamfering blade portion and a cutting blade portion, the chamfering blade portion and the cutting blade portion in the first set of blade structures cooperate to cut one of the battery pole pieces and perform chamfering on the cut edge, while the chamfering blade portion and the cutting blade portion in the second set of blade structures cooperate to cut the other battery pole piece and perform chamfering on the cut edge, the two sets of blade structures are symmetrically arranged to ensure that the adjacent sides of the two battery pole pieces can be cut and chamfered simultaneously and independently.

2. A battery electrode cutting and rounding cutter according to claim 1, characterized in that: The cutting blades are all arranged in an inclined manner.

3. A battery electrode cutting and rounding cutter according to claim 1, characterized in that: The chamfering blade portions are respectively arranged on both sides of the cutting blade portion.

4. A battery electrode cutting and rounding cutter according to claim 1, characterized in that: Guide parts are respectively arranged on both sides of the lower cutter body.

5. A battery electrode cutting and rounding cutter according to claim 4, characterized in that: The guide portion is V-shaped.

6. A battery electrode cutting and rounding cutter according to claim 1, characterized in that: The lower cutter body is provided with a discharge ejector pin, which is located between the two groups of cutting blade structures.

7. A battery electrode cutting and rounding cutter according to claim 6, characterized in that: The discharge ejector pin comprises a first ejector pin and a second ejector pin, and the length of the first ejector pin is smaller than the length of the second ejector pin.

8. A battery electrode cutting and rounding cutter according to claim 7, characterized in that: Two first ejector pins are respectively arranged close to the chamfered blade portion, and three second ejector pins are evenly arranged between the first ejector pins.

9. A battery electrode cutting and rounding cutter according to claim 1, characterized in that: The lower cutter body is also provided with a blowing hole.

10. A battery electrode cutting and rounding cutter according to claim 9, characterized in that: The air blowing holes are located between the cutting blades.

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