Device for coating rubber film on surface of lithium battery

Abstract

The utility model discloses a device for coating a rubber film on the surface of a lithium battery, which comprises a rack, a first coating box, a first drying box, a second coating box, a second drying box and a conveyor belt for conveying the lithium battery are arranged on the rack; the first coating box, the first drying box, the second coating box and the second drying box are sequentially arranged in a communicating mode from left to right. The conveying belt is arranged in the first coating box, the first drying box, the second coating box and the second drying box in a penetrating mode. The first coating box and the second coating box are respectively connected with a material storage box in which rubber liquid is stored through communicated material conveying pipes; the first drying box and the second drying box are connected with an air heater through communicating air pipes. According to the utility model, the automatic coating of the rubber film on the surface of the lithium battery is realized, the labor intensity of operators is reduced, the processing efficiency during coating production is improved, and meanwhile, the coated rubber can be dried, the solidification of the rubber is accelerated, and the coating effect of the rubber film is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a device for coating a rubber film on the surface of a lithium battery. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. With the development of science and technology, lithium batteries have become mainstream.

[0003] During the production and processing of lithium batteries, liquid rubber needs to be coated on the surface. After solidification, the liquid rubber becomes an elastic rubber film, which can adapt to the volume change of the lithium electrode during the charging and discharging process of the lithium battery, reduce the interface stress, and thus extend the battery life. However, the existing coating operation is usually completed manually by the operator. The operator holds a brush plate, then dips the liquid rubber material in the storage box and coats the material on the surface of the lithium battery, which not only increases the labor intensity of the operator, but also reduces the processing efficiency during the coating production. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a device for coating a rubber film on the surface of a lithium battery, so as to solve the problem raised in the background technology.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0006] A device for coating a rubber film on the surface of a lithium battery, comprising a frame, wherein a first coating box, a first drying box, a second coating box, a second drying box and a conveyor belt for conveying lithium batteries are arranged on the frame; the first coating box, the first drying box, the second coating box and the second drying box are sequentially connected from left to right, and the conveyor belt is arranged through the first coating box, the first drying box, the second coating box and the second drying box; the first coating box is provided with a first translation spraying mechanism arranged toward the top of the lithium battery and movable horizontally, and a first longitudinal spraying mechanism movable longitudinally to surround the side of the lithium battery; the first drying box is provided with a second translation spraying mechanism arranged toward the top of the lithium battery and movable horizontally The second coating box is provided with a flipping mechanism for flipping the lithium battery 180° so that the bottom of the lithium battery faces upward and a third translational spraying mechanism which is arranged toward the top of the flipped lithium battery and can be moved horizontally; the second drying box is provided with a fourth translational spraying mechanism which is arranged toward the top of the flipped lithium battery and can be moved horizontally; the first translational spraying mechanism, the first longitudinal spraying mechanism and the third translational spraying mechanism are respectively connected to a storage box storing rubber liquid through a connected material delivery pipe; the second translational spraying mechanism, the second longitudinal spraying mechanism and the fourth translational spraying mechanism are respectively connected to a hot air blower through a connected air pipe.

[0007] Preferably, the first translational spraying mechanism includes a translational screw horizontally rotatably arranged on the top of the first coating box and a translational guide rod located on both sides of the translational screw, a rectangular mounting frame is passed through the translational screw and the translational guide rod, the rectangular mounting frame is fixedly connected to the screw nut on the translational screw, one end of the translational screw is connected to a translational drive motor for driving the translational screw to rotate so as to realize the translation of the rectangular mounting frame; a plurality of downwardly arranged translational fan-shaped nozzles are arranged at the bottom of the rectangular mounting frame along the length direction.

[0008] Preferably, the structure and arrangement of the second translational spraying mechanism, the third translational spraying mechanism and the fourth translational spraying mechanism are the same as those of the first translational spraying mechanism; the translational fan-shaped nozzles on the first translational spraying mechanism and the third translational spraying mechanism are respectively connected to the material storage box through connected material conveying pipes, and the translational fan-shaped nozzles on the second translational spraying mechanism and the fourth translational spraying mechanism are respectively connected to the hot air blower through connected air pipes.

[0009] Preferably, the first longitudinal movement spraying mechanism includes two longitudinal movement screws and two longitudinal movement guide rods which are longitudinally rotatably arranged at the four corners of the first coating box and are arranged to form a rectangle, and the two longitudinal movement screws are arranged diagonally, and the two longitudinal movement guide rods are arranged diagonally; a U-shaped mounting bracket is passed through the longitudinal movement screw and the longitudinal movement guide rod, and the U-shaped mounting bracket is fixedly connected to the screw nut on the longitudinal movement screw, and the top ends of the two longitudinal movement screws pass through the first coating box and are connected to a longitudinal movement drive motor arranged on the first coating box through a transmission assembly for driving the two longitudinal movement screws to rotate synchronously; a plurality of longitudinal movement fan-shaped nozzles arranged toward the side of the lithium battery are arranged on the side of the U-shaped mounting bracket facing the side of the lithium battery.

[0010] Preferably, the structure and arrangement of the second longitudinal movement spraying mechanism are the same as those of the first longitudinal movement spraying mechanism; the longitudinal movement fan-shaped nozzle on the first longitudinal movement spraying mechanism is connected to the material storage box through a connected material delivery pipe, and the longitudinal movement fan-shaped nozzle on the second longitudinal movement spraying mechanism is connected to the hot air blower through a connected air pipe.

[0011] Preferably, the flipping mechanism includes a pair of flipping components relatively arranged on the front and rear sides of the lithium battery, which are used to clamp the lithium battery and realize the lithium battery flipping 180° after lifting; the flipping component includes a lifting electric cylinder, the telescopic rod of the lifting electric cylinder is arranged upward and connected to the flipping motor, the rotating shaft of the flipping motor is arranged toward the lithium battery and connected to the clamping electric cylinder, the telescopic rod of the clamping electric cylinder is arranged toward the lithium battery and the end of the telescopic rod of the clamping electric cylinder is provided with a rubber clamping block for abutting against the side of the lithium battery.

[0012] Preferably, a pump is provided on the feed pipe, and a solenoid valve is provided on the air pipe.

[0013] Preferably, a stirring mechanism is provided inside the storage box.

[0014] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0015] The utility model not only realizes the automatic coating of the rubber film on the surface of the lithium battery, reduces the labor intensity of the operators, and improves the processing efficiency during coating production, but also adopts the coating method of the assembly line to realize the continuous coating of different lithium batteries. At the same time, the coated rubber can be dried to accelerate the coagulation of the rubber and ensure the coating effect of the rubber film. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the first translational ejection mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first longitudinal displacement ejection mechanism of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the turning mechanism of the utility model.

[0020] Wherein: 1. conveyor belt, 2. first coating box, 3. first drying box, 4. second coating box, 5. second drying box, 6. first translation spraying mechanism, 61. rectangular mounting frame, 62. translation screw rod, 63. translation guide rod, 64. translation drive motor, 65. translation fan-shaped nozzle, 7. first longitudinal movement spraying mechanism, 71. U-shaped mounting frame, 72. longitudinal movement screw rod, 73. longitudinal movement guide rod, 74. longitudinal movement drive motor, 75. transmission assembly, 76. longitudinal movement fan-shaped nozzle, 8. second translation spraying mechanism, 9. second longitudinal movement spraying mechanism, 10. flipping mechanism, 101. lifting cylinder, 102. flipping motor, 103. clamping cylinder, 104. rubber clamping block, 11. third translation spraying mechanism, 12. fourth translation spraying mechanism, 13. storage box, 14. hot air blower. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] A device for coating a rubber film on the surface of a lithium battery, combined with Figure 1 As shown, it includes a frame, on which a first coating box 2, a first drying box 3, a second coating box 4, a second drying box 5 and a conveyor belt 1 are arranged, wherein the first coating box 2, the first drying box 3, the second coating box 4 and the second drying box 5 are connected in sequence from left to right; the conveyor belt 1 is arranged through the first coating box 2, the first drying box 3, the second coating box 4 and the second drying box 5, and the conveyor belt 1 is used to transport lithium batteries.

[0023] The first coating box 2 is provided with a first translational spraying mechanism 6 and a first longitudinal spraying mechanism 7, wherein the first translational spraying mechanism 6 is arranged toward the top of the lithium battery and can be moved horizontally; the first longitudinal spraying mechanism 7 can be moved longitudinally to surround the side of the lithium battery. The first drying box 3 is provided with a second translational spraying mechanism 8 and a second longitudinal spraying mechanism 9, wherein the second translational spraying mechanism 8 is arranged toward the top of the lithium battery and can be moved horizontally; the second longitudinal spraying mechanism 9 can be moved longitudinally to surround the side of the lithium battery. The second coating box 4 is provided with a flipping mechanism 10 and a third translational spraying mechanism 11, wherein the flipping mechanism 10 is used to flip the lithium battery 180° so that the bottom of the lithium battery faces upward; the third translational spraying mechanism 11 is arranged toward the top of the flipped lithium battery and can be moved horizontally. The second drying box 5 is provided with a fourth translational spraying mechanism 12, which is arranged toward the top of the flipped lithium battery and can be moved horizontally.

[0024] The first translational spraying mechanism 6, the first longitudinal spraying mechanism 7 and the third translational spraying mechanism 11 are respectively connected to a storage box 13 through a connected material delivery pipe, and the storage box 13 stores rubber liquid; a pump is provided on the material delivery pipe, and the pump is used to pump the rubber liquid in the storage box 13 into the first translational spraying mechanism 6, the first longitudinal spraying mechanism 7 and the third translational spraying mechanism 11, so as to achieve the rubber film coating of the top and four sides of the lithium battery in the first coating box 2, and the rubber film coating of the bottom of the lithium battery in the second coating box 4. The second translational spraying mechanism 8, the second longitudinal spraying mechanism 9 and the fourth translational spraying mechanism 12 are respectively connected to a hot air blower 14 through a connected air pipe, and the hot air blower 14 is used to generate hot air. The air pipe is provided with a solenoid valve, and the solenoid valve is used to control the opening and closing of the air pipe, so as to achieve the drying of the top and four sides of the lithium battery in the first drying box 3, and the drying of the bottom of the lithium battery in the second drying box 5.

[0025] like Figure 2 As shown, the first translation spraying mechanism 6 includes a translation screw 62 horizontally rotatably arranged on the top of the first coating box 2 and a translation guide rod 63 located on both sides of the translation screw 62. A rectangular mounting frame 61 is inserted on the translation screw 62 and the translation guide rod 63. The rectangular mounting frame 61 is fixedly connected to the screw nut on the translation screw 62. One end of the translation screw 62 is connected to a translation drive motor 64. The translation drive motor 64 drives the translation screw 62 to rotate, and realizes the translation of the rectangular mounting frame 61 under the guidance of the translation guide rod 63. A plurality of translation fan-shaped nozzles 65 are arranged at the bottom of the rectangular mounting frame 61 along the length direction, and the translation fan-shaped nozzles 65 are all arranged downward.

[0026] The structures and arrangement of the second translational spraying mechanism 8, the third translational spraying mechanism 11 and the fourth translational spraying mechanism 12 are the same as those of the first translational spraying mechanism 6. However, the translational fan-shaped nozzles 65 on the first translational spraying mechanism 6 and the third translational spraying mechanism 11 are respectively connected to the material storage box 13 through the connected material delivery pipes, thereby realizing the rubber film coating function; the translational fan-shaped nozzles 65 on the second translational spraying mechanism 8 and the fourth translational spraying mechanism 12 are respectively connected to the hot air blower 14 through the connected air pipes, thereby realizing the drying function.

[0027] like Figure 3 As shown, the first longitudinal movement spraying mechanism 7 includes two longitudinal movement screw rods 72 and two longitudinal movement guide rods 73 which are longitudinally rotated and arranged at the four corners of the first coating box 2 and are arranged in a rectangular shape, and the two longitudinal movement screw rods 72 are arranged diagonally, and the two longitudinal movement guide rods 73 are arranged diagonally. A U-shaped mounting frame 71 is penetrated on the longitudinal movement screw rod 72 and the longitudinal movement guide rod 73, and the U-shaped mounting frame 71 is fixedly connected to the screw nut on the longitudinal movement screw rod 72. The top ends of the two longitudinal movement screw rods 72 are penetrated from the first coating box 2 and are connected to the longitudinal movement drive motor 74 through the transmission assembly 75. The longitudinal movement drive motor 74 is arranged on the first coating box 2. The longitudinal movement drive motor 74 drives the two longitudinal movement screw rods 72 to rotate synchronously through the transmission assembly 75, and the longitudinal movement of the U-shaped mounting frame 71 is realized under the guidance of the two longitudinal movement guide rods 73. A plurality of longitudinally movable fan-shaped nozzles 76 are arranged on the side of the U-shaped mounting frame 71 facing the side of the lithium battery, and the longitudinally movable fan-shaped nozzles 76 are all arranged facing the side of the lithium battery.

[0028] The structure and arrangement of the second longitudinal movement spraying mechanism 9 are the same as those of the first longitudinal movement spraying mechanism 7. However, the longitudinal movement fan-shaped nozzle 76 on the first longitudinal movement spraying mechanism 7 is connected to the material storage box 13 through a connected material delivery pipe, thereby realizing the rubber film coating function; the longitudinal movement fan-shaped nozzle 76 on the second longitudinal movement spraying mechanism 9 is connected to the hot air blower 14 through a connected air pipe, thereby realizing the drying function.

[0029] The flipping mechanism 10 includes a pair of flipping components arranged at the front and rear sides of the lithium battery, which are used to clamp the lithium battery and flip the lithium battery 180 degrees after lifting. Figure 4As shown, the flip assembly includes a lifting cylinder 101, the telescopic rod of the lifting cylinder 101 is arranged upward and connected to a flip motor 102, the rotating shaft of the flip motor 102 is arranged toward the lithium battery and connected to a clamping cylinder 103, the telescopic rod of the clamping cylinder 103 is arranged toward the lithium battery, and the end of the telescopic rod of the clamping cylinder 103 is provided with a rubber clamping block 104, the rubber clamping block 104 can abut against the side of the lithium battery under the drive of the clamping cylinder 103, and because the rubber clamping block 104 has a certain elasticity, it will not cause damage to the lithium battery. When the lithium battery needs to be flipped, the telescopic rod of the clamping cylinder 103 is extended to allow the rubber clamping block 104 to clamp the lithium battery; the telescopic rod of the lifting cylinder 101 is extended to lift the lithium battery to ensure the flipping space; the rotating shaft of the flip motor 102 rotates to drive the lithium battery to flip 180°.

[0030] The storage box 13 is provided with a stirring mechanism inside, and the stirring mechanism is used to stir the rubber liquid to ensure that the rubber liquid is uniform.

[0031] When the utility model is in use, the lithium battery is transported to the feeding end of the conveyor belt 1, and the lithium battery transported by the conveyor belt 1 passes through the first coating box 2, the first drying box 3, the second coating box 4, and the second drying box 5 in sequence. In the first coating box 2, the rubber film coating on the top and four sides of the lithium battery is completed by the first translation spraying mechanism 6 and the first longitudinal spraying mechanism 7 connected to the material storage box 13 in the first coating box 2; in the first drying box 3, the second translation spraying mechanism 8 and the second longitudinal spraying mechanism 9 connected to the hot air blower 14 are provided. The rubber film coated on the top and four sides of the lithium battery is dried; in the second coating box 4, the lithium battery is turned 180° by the turning mechanism 10 so that the bottom of the lithium battery faces upward, and the rubber film coating on the bottom of the lithium battery is completed by the third translation spraying mechanism 11 connected to the storage box 13; in the second drying box 5, the rubber film coated on the bottom of the lithium battery is dried by the fourth translation spraying mechanism 12 connected to the hot air blower 14; finally, the coated and dried lithium batteries are transported out from the discharge end of the conveyor belt 1 in sequence.

[0032] The utility model not only realizes the automatic coating of the rubber film on the surface of the lithium battery, reduces the labor intensity of the operators, and improves the processing efficiency during the coating production, but also adopts the coating method of the assembly line to realize the continuous coating of different lithium batteries. At the same time, the coated rubber can be dried to accelerate the coagulation of the rubber and ensure the coating effect of the rubber film.

Claims

1. A device for coating a lithium battery surface with a rubber film, comprising a frame, characterized in that: The frame is provided with a first coating box (2), a first drying box (3), a second coating box (4), a second drying box (5) and a conveyor belt (1) for conveying lithium batteries; the first coating box (2), the first drying box (3), the second coating box (4) and the second drying box (5) are sequentially connected from left to right, and the conveyor belt (1) is arranged through the first coating box (2), the first drying box (3), the second coating box (4) and the second drying box (5); the first coating box (2) is provided with a first translation spraying mechanism (6) which is arranged toward the top of the lithium battery and can be moved horizontally, and a first longitudinal spraying mechanism (7) which can be moved longitudinally to surround the side of the lithium battery; the first drying box (3) is provided with a second translation spraying mechanism (8) which is arranged toward the top of the lithium battery and can be moved horizontally, and a longitudinal spraying mechanism (9) which can be moved longitudinally to surround the side of the lithium battery. A second longitudinally moving spraying mechanism (9) is arranged around the side of the lithium battery; the second coating box (4) is provided with a flipping mechanism (10) for flipping the lithium battery 180 degrees so that the bottom of the lithium battery faces upward, and a third translatory spraying mechanism (11) is arranged toward the top of the flipped lithium battery and can move horizontally; the second drying box (5) is provided with a fourth translatory spraying mechanism (12) is arranged toward the top of the flipped lithium battery and can move horizontally; the first translatory spraying mechanism (6), the first longitudinally moving spraying mechanism (7) and the third translatory spraying mechanism (11) are respectively connected to a storage box (13) storing rubber liquid through a connected material delivery pipe; the second translatory spraying mechanism (8), the second longitudinally moving spraying mechanism (9) and the fourth translatory spraying mechanism (12) are respectively connected to a hot air blower (14) through a connected air pipe.

2. The device for coating a lithium battery surface with a rubber film according to claim 1, characterized in that: The first translational spraying mechanism (6) comprises a translational screw (62) which is horizontally rotatably arranged at the top of the first coating box (2) and a translational guide rod (63) located on both sides of the translational screw (62); a rectangular mounting frame (61) is passed through the translational screw (62) and the translational guide rod (63); the rectangular mounting frame (61) is fixedly connected to the screw nut on the translational screw (62); one end of the translational screw (62) is connected to a translational drive motor (64) for driving the translational screw (62) to rotate so as to achieve translation of the rectangular mounting frame (61); a plurality of downwardly arranged translational fan-shaped nozzles (65) are arranged at the bottom of the rectangular mounting frame (61) along the length direction.

3. The device for coating the surface of a lithium battery with a rubber film according to claim 2, characterized in that: The structure and arrangement of the second translational spraying mechanism (8), the third translational spraying mechanism (11) and the fourth translational spraying mechanism (12) are the same as those of the first translational spraying mechanism (6); the translational fan-shaped nozzles (65) on the first translational spraying mechanism (6) and the third translational spraying mechanism (11) are respectively connected to the material storage box (13) through a connected material delivery pipe, and the translational fan-shaped nozzles (65) on the second translational spraying mechanism (8) and the fourth translational spraying mechanism (12) are respectively connected to the hot air blower (14) through a connected air pipe.

4. The device for coating a lithium battery surface with a rubber film according to claim 1, characterized in that: The first longitudinal movement spraying mechanism (7) comprises two longitudinal movement screw rods (72) and two longitudinal movement guide rods (73) which are longitudinally rotatably arranged at four corners in the first coating box (2) and are arranged to form a rectangle, and the two longitudinal movement screw rods (72) are arranged diagonally opposite to each other, and the two longitudinal movement guide rods (73) are arranged diagonally opposite to each other; a U-shaped mounting frame (71) is passed through the longitudinal movement screw rods (72) and the longitudinal movement guide rods (73), and the U-shaped mounting frame (71) is fixedly connected to the screw nut on the longitudinal movement screw rod (72); the top ends of the two longitudinal movement screw rods (72) are both passed through the first coating box (2) and are connected to a longitudinal movement drive motor (74) arranged on the first coating box (2) through a transmission assembly (75) for driving the two longitudinal movement screw rods (72) to rotate synchronously; a plurality of longitudinal movement fan-shaped nozzles (76) are arranged toward the side of the lithium battery on the side of the U-shaped mounting frame (71).

5. The device for coating the surface of a lithium battery with a rubber film according to claim 4, characterized in that: The structure and arrangement of the second longitudinal movement spraying mechanism (9) are the same as those of the first longitudinal movement spraying mechanism (7); the longitudinal movement fan-shaped nozzle (76) on the first longitudinal movement spraying mechanism (7) is connected to the material storage box (13) through a connected material delivery pipe, and the longitudinal movement fan-shaped nozzle (76) on the second longitudinal movement spraying mechanism (9) is connected to the hot air blower (14) through a connected air pipe.

6. The device for coating the surface of a lithium battery with a rubber film according to claim 1, characterized in that: The flipping mechanism (10) comprises a pair of flipping components which are arranged relatively on the front and rear sides of the lithium battery and are used to clamp the lithium battery and realize 180° flipping of the lithium battery after lifting; the flipping component comprises a lifting electric cylinder (101), the telescopic rod of the lifting electric cylinder (101) is arranged upward and is connected to a flipping motor (102), the rotating shaft of the flipping motor (102) is arranged toward the lithium battery and is connected to a clamping electric cylinder (103), the telescopic rod of the clamping electric cylinder (103) is arranged toward the lithium battery, and the end of the telescopic rod of the clamping electric cylinder (103) is provided with a rubber clamping block (104) for abutting against the side of the lithium battery.

7. The device for coating the surface of a lithium battery with a rubber film according to claim 1, characterized in that: The material conveying pipe is provided with a pump, and the air pipe is provided with a solenoid valve.

8. The device for coating the surface of a lithium battery with a rubber film according to claim 1, characterized in that: A stirring mechanism is arranged inside the material storage box (13).

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