Single-side double-layer extrusion slit coating machine

Abstract

The utility model relates to a single-sided double-layer extrusion slit coater which comprises a case, an oven and a vertical frame, the case, the oven and the vertical frame are sequentially arranged, a deviation rectifying mechanism is installed on the case, an unwinding drum is installed on the deviation rectifying mechanism, a swing rod is rotatably installed on the case, an elastic roller is installed on the swing rod, and the elastic roller is connected with the oven. A first guide roller is installed on the machine box, a first crack spraying head is installed on the machine box, an installation block is installed on the machine box in a sliding mode, a second crack spraying head is installed on the installation block, and a plurality of second guide rollers are installed on the vertical frame. The first motor works to drive the first threaded rod to rotate, and the first threaded rod is matched with the sliding block in threaded connection to drive the barrel base to move along the guide rail through the guide block, so that the positions of the unwinding barrel and the winding barrel are adjusted, deviation correction operation is achieved, and positive and negative pole pieces of lithium batteries are prevented from deviating in the conveying process.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery positive and negative electrode processing technology, and in particular to a single-sided double-layer extrusion slit coating machine. Background Technology

[0002] The coating machine is used for precision coating of positive and negative electrode sheets of lithium-ion batteries. It mainly consists of an unwinding section, a machine head section, an oven section, a traction section, a winding section, and an electronic control section. It uniformly coats the mixed slurry onto the substrate, ensuring that the size and weight are within the process range. After drying, it is wound up to prepare for the next process.

[0003] During the coating process of positive and negative electrode sheets for lithium-ion batteries, the width of the conveying roller is greater than the width of the positive and negative electrode sheets. Therefore, during the conveying process, the positive and negative electrode sheets of the lithium-ion batteries may deviate, affecting the coating process. At the same time, it is necessary to ensure that the positive and negative electrode sheets of the lithium-ion batteries are taut during the conveying process, otherwise it will affect the conveying of the positive and negative electrode sheets of the lithium-ion batteries. Utility Model Content

[0004] The problem solved by this utility model is to provide a single-sided double-layer extrusion slot coating machine, which solves the technical problem that when the width of the conveying roller is greater than the width of the positive and negative electrode sheets of lithium-ion batteries, the positive and negative electrode sheets of lithium-ion batteries will deviate during the conveying process, affecting the coating process. At the same time, it is necessary to ensure that the positive and negative electrode sheets of lithium-ion batteries are in a taut state during the conveying process, otherwise it will affect the conveying of the positive and negative electrode sheets of lithium-ion batteries.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A single-sided double-layer extrusion slot coating machine includes a machine housing, an oven, and a stand, which are arranged sequentially. A correction mechanism is installed on the machine housing, and a roll unwinding drum is installed on the correction mechanism. A swing arm is rotatably installed on the machine housing, and a tension roller is installed on the swing arm. A first guide roller is installed on the machine housing. A first slot coating head is installed on the machine housing. An mounting block is slidably installed on the machine housing, and a second slot coating head is installed on the mounting block. A plurality of second guide rollers are installed on the stand.

[0007] The positive and negative electrode sheets of the lithium battery are released from the unwinding drum, pass through the tension roller, the first guide roller, the oven and the second guide roller in sequence, and are finally wound up on the winding drum of the web-correcting mechanism.

[0008] Preferably, the correction mechanism includes a drum base and a mounting base, the unwinding drum and the winding drum are installed inside the drum base, a first motor is installed on the outside of the mounting base, and a first threaded rod is installed at the output end of the first motor.

[0009] Preferably, a slider is installed on the bottom side of the cylinder seat, and the first threaded rod and the slider are threadedly connected.

[0010] Preferably, guide blocks are symmetrically installed on the bottom side of the cylinder base, and the guide blocks are slidably installed with the guide rail.

[0011] Preferably, a speed reducer is installed at the drum seat end of the take-up drum, and the output end of the speed reducer is connected to the take-up drum, and the output end of the speed reducer is connected to the input end of the second motor.

[0012] Preferably, a cylinder is installed on the side wall of the chassis, and the telescopic end of the cylinder is rotatably connected to the middle of the swing rod via a pin, and the top end of the swing rod is connected to the chassis via a rotating shaft.

[0013] Preferably, a third motor is installed on the chassis, and a second threaded rod is installed at the output end of the third motor, and the second threaded rod is threadedly connected to the mounting block.

[0014] The beneficial effects of this utility model are:

[0015] The first motor drives the first threaded rod to rotate, which cooperates with the threaded slider to drive the drum seat to move along the guide rail through the guide block, thereby adjusting the position of the unwinding drum and the winding drum, realizing the correction operation, and preventing the positive and negative electrode sheets of the lithium battery from running off-center during the transportation process.

[0016] The third motor drives the second threaded rod to rotate, which in turn moves the threaded mounting block, thereby adjusting the distance between the second gap spray head and the positive and negative electrode sheets of the lithium battery.

[0017] The cylinder drives the swing arm to rotate and swing, thereby adjusting the position of the tension rollers and ensuring that the positive and negative electrode sheets of the lithium battery are always in a taut state during the transportation process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the correction mechanism of this utility model.

[0020] Legend:

[0021] 1. Machine casing; 2. Unwinding drum; 3. Swing rod; 4. Tension roller; 5. First guide roller; 6. First slit spray head; 7. Mounting block; 8. Second slit spray head; 9. Oven; 10. Stand; 11. Second guide roller; 12. Rewinding drum; 13. Drum base; 14. Mounting base; 15. First motor; 16. First threaded rod; 17. Slider; 18. Guide block; 19. Guide rail; 20. Reducer; 21. Second motor; 22. Cylinder; 23. Third motor; 24. Second threaded rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Specific implementation examples are given below.

[0024] See Figure 1 and Figure 2 A single-sided double-layer extrusion slot coating machine includes a machine housing 1, an oven 9, and a stand 10. The machine housing 1, oven 9, and stand 10 are arranged in sequence. A correction mechanism is installed on the machine housing 1, and a roll unwinding drum 2 is installed on the correction mechanism. A swing arm 3 is rotatably installed on the machine housing 1, and a tension roller 4 is installed on the swing arm 3. A first guide roller 5 is installed on the machine housing 1. A first slot spray head 6 is installed on the machine housing 1. An mounting block 7 is slidably installed on the machine housing 1, and a second slot spray head 8 is installed on the mounting block 7. A plurality of second guide rollers 11 are installed on the stand 10.

[0025] The positive and negative electrode sheets of the lithium battery are released from the unwinding drum 2, pass through the tension roller 4, the first guide roller 5, the oven 9 and the second guide roller 11 in sequence, and are finally wound up on the winding drum 12 of the correction mechanism.

[0026] The correction mechanism includes a drum base 13 and a mounting base 14. The unwinding drum 2 and the take-up drum 12 are installed inside the drum base 13. A first motor 15 is installed on the outside of the mounting base 14. A first threaded rod 16 is installed at the output end of the first motor 15. A slider 17 is installed on the bottom side of the drum base 13. The first threaded rod 16 and the slider 17 are threadedly connected. Guide blocks 18 are symmetrically installed on the bottom side of the drum base 13, and the guide blocks 18 are slidably installed with the guide rail 19. The first motor 15 drives the first threaded rod 16 to rotate, which cooperates with the threaded slider 17 to drive the drum base 13 to move along the guide rail 19 through the guide blocks 18, thereby adjusting the position of the unwinding drum 2 and the take-up drum 12, realizing the correction operation, and preventing the positive and negative electrode sheets of the lithium battery from running off-center during the transportation process.

[0027] A speed reducer 20 is installed at the end of the drum base 13 of the take-up drum 12, and the output end of the speed reducer 20 is connected to the take-up drum 12. The output end of the speed reducer 20 is connected to the input end of the second motor 21. Through the operation of the second motor 21, the speed reducer 20 drives the take-up drum 12 to rotate, thereby realizing the winding of the positive and negative electrode sheets of the lithium battery.

[0028] A cylinder 22 is installed on the side wall of the housing 1, and the telescopic end of the cylinder 22 is rotatably connected to the middle of the swing rod 3 through a plug shaft. The top of the swing rod 3 is connected to the housing 1 through a rotating shaft. The operation of the cylinder 22 drives the swing rod 3 to rotate and swing, thereby adjusting the position of the tension roller 4, thus ensuring that it is always in a taut state during the transportation of the positive and negative electrode sheets of the lithium battery.

[0029] A third motor 23 is installed on the chassis 1. A second threaded rod 24 is installed at the output end of the third motor 23 and is threadedly connected to the mounting block 7. The third motor 23 drives the second threaded rod 24 to rotate, which in turn drives the threaded mounting block 7 to move, thereby adjusting the distance between the second gap spray head 8 and the positive and negative electrode sheets of the lithium battery.

[0030] Working principle: The second motor 21 operates, and the speed reducer 20 drives the take-up drum 12 to rotate, thereby realizing the movement of the positive and negative electrode sheets of the lithium battery. At this time, the positive and negative electrode sheets of the lithium battery are released from the unwinding drum 2, and pass through the tension roller 4, the first guide roller 5, the oven 9 and the second guide roller 11 in sequence, and finally are wound on the take-up drum 12 of the correction mechanism. When the positive and negative electrode sheets of the lithium battery pass through the first slit spray head 6, lithium iron phosphate or ternary lithium is coated onto the positive and negative electrode sheets of the lithium battery through the first slit spray head 6. When the positive and negative electrode sheets of the lithium battery pass through the second slit spray head 8, graphite or sulfide is coated onto the positive and negative electrode sheets of the lithium battery through the second slit spray head 8, and then the drying is completed by the oven 9.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A single-sided double-layer extrusion slot coating machine, characterized in that, The system includes a casing (1), an oven (9), and a stand (10), which are arranged sequentially. A correction mechanism is installed on the casing (1), and a roll unwinding drum (2) is installed on the correction mechanism. A swing arm (3) is rotatably installed on the casing (1), and a tension roller (4) is installed on the swing arm (3). A first guide roller (5) is installed on the casing (1), a first slit spray head (6) is installed on the casing (1), a mounting block (7) is slidably installed on the casing (1), and a second slit spray head (8) is installed on the mounting block (7). Several second guide rollers (11) are installed on the stand (10). The positive and negative electrode sheets of the lithium battery are released from the unwinding drum (2), pass through the tension roller (4), the first guide roller (5), the oven (9) and the second guide roller (11) in sequence, and are finally wound up on the winding drum (12) of the correction mechanism.

2. The single-sided double-layer extrusion slot coating machine according to claim 1, characterized in that, The correction mechanism includes a drum base (13) and a mounting base (14). The unwinding drum (2) and the winding drum (12) are installed inside the drum base (13). A first motor (15) is installed on the outside of the mounting base (14). A first threaded rod (16) is installed at the output end of the first motor (15).

3. A single-sided double-layer extrusion slot coating machine according to claim 2, characterized in that, A slider (17) is installed on the bottom side of the cylinder seat (13), and the first threaded rod (16) and the slider (17) are threadedly connected.

4. A single-sided double-layer extrusion slot coating machine according to claim 3, characterized in that, Guide blocks (18) are symmetrically installed on the bottom side of the cylinder base (13), and the guide blocks (18) are slidably installed with the guide rail (19).

5. A single-sided double-layer extrusion slot coating machine according to claim 4, characterized in that, A speed reducer (20) is installed at the end of the drum seat (13) of the take-up drum (12), and the output end of the speed reducer (20) is connected to the take-up drum (12). The output end of the speed reducer (20) is connected to the input end of the second motor (21).

6. A single-sided double-layer extrusion slot coating machine according to claim 5, characterized in that, A cylinder (22) is installed on the side wall of the chassis (1), and the telescopic end of the cylinder (22) is rotatably connected to the middle part of the swing rod (3) through a plug shaft. The top end of the swing rod (3) is connected to the chassis (1) through a rotating shaft.

7. A single-sided double-layer extrusion slot coating machine according to claim 6, characterized in that, A third motor (23) is installed on the chassis (1). A second threaded rod (24) is installed at the output end of the third motor (23), and the second threaded rod (24) is threadedly connected to the mounting block (7).

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