Cold and hot cutting device for lithium battery production

Abstract

The utility model relates to lithium battery production technical field discloses a cold and hot cutting device for lithium battery production, including frame, the inner wall rotation of frame is connected with the placement roll, the inner wall rotation of frame is connected with the winding roller, the front end fixed connection of frame has first motor, the middle part of frame is provided with cold and hot cutting assembly, and the top of frame is provided with the tensioning assembly. The utility model discloses through setting cold and hot cutting assembly, specifically is when using cold cutting, through second motor, second motor drives the rotation of hollow pipe, makes multiple cutting knives rotate and divides and cuts the polar piece, when cutting diaphragm, through the hot -blast machine and sends the hot air to the inside of hollow pipe through the gas pipe, makes the hot air enter the inside of cavity through the air vent, heats the cutting knife, realizes the hot cutting of diaphragm, ensures that the cutting edge is neat, reduces burr and wire drawing phenomenon, can choose cold cutting or hot cutting according to different material and cutting requirement, improves the flexibility of equipment.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a cold and hot cutting device for lithium battery production. Background Technology

[0002] In the manufacturing process of lithium batteries, cutting operations are mainly performed on components such as electrode materials and separators. For electrode materials, such as the positive and negative electrode materials, precise control of the cut size and shape is required to meet the battery design specifications. This not only affects the battery's capacity but also its performance and safety. During the cutting process, it is essential to ensure the flatness and smoothness of the cut edges and avoid defects such as burrs, as these can lead to problems such as internal short circuits within the battery.

[0003] Traditional cutting devices can usually only perform single cold or hot cutting and cannot adjust the cutting method according to different materials, which limits the flexibility of the equipment. Therefore, we propose a cold and hot cutting device for lithium battery production. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a cold and hot cutting device for lithium battery production.

[0005] This utility model is achieved by the following technical solution: a cold and hot cutting device for lithium battery production, including a frame, a placement roller rotatably connected to the inner wall of the frame, a winding roller rotatably connected to the inner wall of the frame, a first motor fixedly connected to the front end of the frame, a cold and hot cutting assembly provided in the middle of the frame, a tensioning assembly provided at the top of the frame, and a guide roller rotatably connected to the inner wall of the frame.

[0006] The hot and cold cutting assembly includes a second motor, the output end of which is fixedly connected to a hollow tube. Ventilation holes are provided on the surface of the hollow tube. A cutter is fixedly connected to the surface of the hollow tube. A cavity is provided on the inner wall of the cutter. A fixed block is rotatably connected to one end of the hollow tube. An air supply pipe is connected to the inner wall of the fixed block. A hot air blower is provided at the right end of the fixed block.

[0007] With the above technical solution, during cold cutting, a second motor drives the hollow tube to rotate, causing multiple cutters to rotate and cut the electrode sheets. During diaphragm cutting, a hot air blower delivers hot air to the inside of the hollow tube through a gas supply pipe. The hot air enters the cavity through ventilation holes to heat the cutters, achieving hot cutting of the diaphragm. This ensures neat cutting edges and reduces burrs and stringing. Cold cutting or hot cutting can be selected according to different materials and cutting requirements, improving the flexibility of the equipment. Since one end of the hollow tube is rotatably connected to the fixed block, the rotation of the hollow tube avoids driving the gas supply pipe to rotate.

[0008] As a further improvement to the above solution, the front end of the second motor is fixedly connected to the rear end of the frame, the surface of the hollow tube is rotatably connected to the inner wall of the frame, and the cavity is connected to the hollow tube through a ventilation hole.

[0009] The above technical solution provides multiple ventilation holes arranged in a circular pattern around the hollow tube. These ventilation holes allow hot air to quickly enter the cavity, improving the heating efficiency of the cutter.

[0010] As a further improvement to the above solution, the air outlet of the hot air blower is connected to the air supply pipe, and the rear end of the hot air blower is fixedly connected to the front end of the frame.

[0011] As a further improvement to the above solution, the tensioning assembly includes a fixed frame, a hydraulic rod fixedly connected to the top of the fixed frame, the output end of the hydraulic rod passing through the fixed frame and fixedly connected to a mounting frame, a tensioning roller rotatably connected to the inner wall of the mounting frame, and a limit rod slidably connected to the inner wall of the fixed frame.

[0012] The above technical solution involves activating a hydraulic rod, whose output end pushes the mounting frame downwards, causing the tension roller to move downwards and compress the material being cut, thus ensuring material stability during the cutting process and improving cutting quality.

[0013] As a further improvement to the above solution, the bottom of the fixing frame is fixedly connected to the top of the frame, and the bottom of the limiting rod is fixedly connected to the top of the mounting frame.

[0014] The above technical solution ensures the stability of the mounting frame during movement by fixing the limiting rod to the top of the mounting frame, thus preventing displacement.

[0015] As a further improvement to the above solution, two limiting rods are provided, and the two limiting rods are symmetrically distributed around the fixing frame.

[0016] The above technical solution ensures the stability of the structural connection through two limiting rods, and further improves the limiting effect.

[0017] As a further improvement to the above solution, the output end of the first motor is fixedly connected to one end of the take-up roller, and the guide roller is located between the take-up roller and the hollow tube.

[0018] The above technical solution involves using a first motor to drive a take-up roller to rotate, thereby taking up the slit material, and using a guide roller to guide the cut material.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This invention incorporates a cold and hot cutting assembly. Specifically, during cold cutting, a second motor drives the hollow tube to rotate, causing multiple cutters to slit the electrode sheets. During diaphragm cutting, a hot air blower delivers hot air through an air supply pipe into the hollow tube. The hot air enters the cavity through ventilation holes, heating the cutters and achieving hot cutting of the diaphragm. This ensures neat cutting edges and reduces burrs and stringing. Cold or hot cutting can be selected according to different materials and cutting requirements, improving the flexibility of the equipment.

[0021] This invention features a tensioning assembly, specifically a hydraulic rod. The output end of the hydraulic rod pushes the mounting frame downwards, causing the tensioning roller to move downwards and compress the material being cut, thus ensuring material stability during the cutting process and improving cutting quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0027] Explanation of key symbols:

[0028] 1. Frame; 2. Placement roller; 3. Rewinding roller; 4. First motor; 5. Hot and cold cutting assembly; 501. Second motor; 502. Hollow tube; 503. Ventilation hole; 504. Cutter; 505. Cavity; 506. Fixing block; 507. Air supply pipe; 508. Hot air blower; 6. Tensioning assembly; 601. Fixing frame; 602. Hydraulic rod; 603. Mounting frame; 604. Tensioning roller; 605. Limiting rod; 7. Guide roller. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] Please combine Figure 1-5A cold and hot cutting device for lithium battery production according to this embodiment includes a frame 1, a placement roller 2 rotatably connected to the inner wall of the frame 1, a winding roller 3 rotatably connected to the inner wall of the frame 1, a first motor 4 fixedly connected to the front end of the frame 1, a cold and hot cutting component 5 provided in the middle of the frame 1, a tensioning component 6 provided at the top of the frame 1, and a guide roller 7 rotatably connected to the inner wall of the frame 1.

[0031] The hot and cold cutting assembly 5 includes a second motor 501. A hollow tube 502 is fixedly connected to the output end of the second motor 501. A ventilation hole 503 is opened on the surface of the hollow tube 502. A cutter 504 is fixedly connected to the surface of the hollow tube 502. A cavity 505 is provided on the inner wall of the cutter 504. A fixing block 506 is rotatably connected to one end of the hollow tube 502. An air supply pipe 507 is connected to the inner wall of the fixing block 506. A hot air blower 508 is provided at the right end of the fixing block 506.

[0032] The front end of the second motor 501 is fixedly connected to the rear end of the frame 1. The surface of the hollow tube 502 is rotatably connected to the inner wall of the frame 1. The cavity 505 is connected to the hollow tube 502 through the ventilation hole 503. The electrode sheet to be cut is installed on the placement roller 2, and then placed on the lower surface of the tension roller 604, the upper surface of the cutter 504, and the upper surface of the guide roller 7. The other end of the electrode sheet is wound around the take-up roller 3. The first motor 4 is started, and the first motor 4 drives the take-up roller 3 to rotate, so that the take-up roller 3 winds up the electrode sheet. At the same time, the second motor 501 is started. The hollow tube 502 is rotated, causing multiple cutters 504 to rotate and cut the electrode sheets. When cutting the diaphragm, the diaphragm is installed on the placement roller 2. The above placement steps are repeated. The hot air blower 508 is started, and the hot air blower 508 delivers hot air to the inside of the hollow tube 502 through the air supply pipe 507. The hot air enters the cavity 505 through the ventilation hole 503 to heat the cutters 504, thereby achieving hot cutting of the diaphragm. This ensures that the cutting edge is neat and reduces burrs and stringing. Cold cutting or hot cutting can be selected according to different materials and cutting requirements, which improves the flexibility of the equipment.

[0033] The air outlet of the hot air blower 508 is connected to the air supply pipe 507, and the rear end of the hot air blower 508 is fixedly connected to the front end of the frame 1.

[0034] The tensioning assembly 6 includes a fixed frame 601, with a hydraulic rod 602 fixedly connected to the top of the fixed frame 601. The output end of the hydraulic rod 602 passes through the fixed frame 601 and is fixedly connected to a mounting frame 603. A tensioning roller 604 is rotatably connected to the inner wall of the mounting frame 603. A limit rod 605 is slidably connected to the inner wall of the fixed frame 601. When it is necessary to adjust the tension of the material to be cut, the hydraulic rod 602 is activated. The output end of the hydraulic rod 602 pushes the mounting frame 603 downward, causing the tensioning roller 604 to move downward and squeeze the material to be cut, ensuring the stability of the material during the cutting process and improving the cutting quality.

[0035] The bottom of the fixed frame 601 is fixedly connected to the top of the frame 1, and the bottom of the limiting rod 605 is fixedly connected to the top of the mounting frame 603.

[0036] There are two limit rods 605, which are symmetrically distributed around the fixing frame 601.

[0037] The output end of the first motor 4 is fixedly connected to one end of the take-up roller 3, and the guide roller 7 is located between the take-up roller 3 and the hollow tube 502.

[0038] The implementation principle of the hot and cold cutting device for lithium battery production in this embodiment is as follows: During use, the electrode sheet to be cut is mounted on the placement roller 2, then placed on the lower surface of the tension roller 604, the upper surface of the cutter 504, and the upper surface of the guide roller 7. The other end of the electrode sheet is wound around the take-up roller 3. The first motor 4 is started, driving the take-up roller 3 to rotate, causing the take-up roller 3 to wind up the electrode sheet. Simultaneously, the second motor 501 is started, driving the hollow tube 502 to rotate, causing multiple cutters 504 to rotate and cut the electrode sheet. When cutting the separator, the separator is mounted on the placement roller 2, and the above placement steps are repeated. Hot air blower 508 delivers hot air through air pipe 507 to the interior of hollow tube 502. The hot air enters the cavity 505 through ventilation hole 503, heating the cutter 504 to achieve hot cutting of the diaphragm, ensuring neat cutting edges and reducing burrs and stringing. Cold cutting or hot cutting can be selected according to different materials and cutting requirements, improving the flexibility of the equipment. When it is necessary to adjust the tension of the material to be cut, hydraulic rod 602 is activated. The output end of hydraulic rod 602 pushes the mounting frame 603 downward, causing the tension roller 604 to move downward to squeeze the material being cut, ensuring the stability of the material during the cutting process and improving the cutting quality.

[0039] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A cold and hot cutting device for lithium battery production, characterized in that, The frame (1) includes a placement roller (2) rotatably connected to the inner wall of the frame (1), a take-up roller (3) rotatably connected to the inner wall of the frame (1), a first motor (4) fixedly connected to the front end of the frame (1), a cold and hot cutting assembly (5) provided in the middle of the frame (1), a tensioning assembly (6) provided at the top of the frame (1), and a guide roller (7) rotatably connected to the inner wall of the frame (1). The hot and cold cutting assembly (5) includes a second motor (501), the output end of which is fixedly connected to a hollow tube (502). Ventilation holes (503) are provided on the surface of the hollow tube (502). A cutter (504) is fixedly connected to the surface of the hollow tube (502). A cavity (505) is provided on the inner wall of the cutter (504). A fixing block (506) is rotatably connected to one end of the hollow tube (502). An air supply pipe (507) is connected to the inner wall of the fixing block (506). A hot air blower (508) is provided at the right end of the fixing block (506).

2. The cold and hot cutting device for lithium battery production as described in claim 1, characterized in that: The front end of the second motor (501) is fixedly connected to the rear end of the frame (1), the surface of the hollow tube (502) is rotatably connected to the inner wall of the frame (1), and the cavity (505) is connected to the hollow tube (502) through the ventilation hole (503).

3. The cold and hot cutting device for lithium battery production as described in claim 1, characterized in that: The air outlet of the hot air blower (508) is connected to the air supply pipe (507), and the rear end of the hot air blower (508) is fixedly connected to the front end of the frame (1).

4. The cold and hot cutting device for lithium battery production as described in claim 1, characterized in that: The tensioning assembly (6) includes a fixed frame (601), a hydraulic rod (602) is fixedly connected to the top of the fixed frame (601), the output end of the hydraulic rod (602) passes through the fixed frame (601) and is fixedly connected to a mounting frame (603), a tensioning roller (604) is rotatably connected to the inner wall of the mounting frame (603), and a limit rod (605) is slidably connected to the inner wall of the fixed frame (601).

5. The cold and hot cutting device for lithium battery production as described in claim 4, characterized in that: The bottom of the fixing frame (601) is fixedly connected to the top of the frame (1), and the bottom of the limiting rod (605) is fixedly connected to the top of the mounting frame (603).

6. The cold and hot cutting device for lithium battery production as described in claim 4, characterized in that: There are two limiting rods (605), and the two limiting rods (605) are symmetrically distributed around the fixing frame (601).

7. The cold and hot cutting device for lithium battery production as described in claim 1, characterized in that: The output end of the first motor (4) is fixedly connected to one end of the take-up roller (3), and the guide roller (7) is located between the take-up roller (3) and the hollow tube (502).

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