Spraying equipment for battery diaphragm production

Abstract

The utility model relates to the technical field of battery diaphragm production, and discloses spraying equipment for battery diaphragm production, which comprises a conveying frame, a traction roller is movably mounted on the inner side of the conveying frame, and an unwinding device and a winding device are respectively placed at two ends of the conveying frame. A spraying box, a pressing and covering device and a drying box are sequentially installed at the upper end of the conveying frame in the direction from the unwinding device to the winding device, the pressing and covering device comprises an adjusting frame, and the adjusting frame is located on the outer surface of the upper end of the conveying frame. The pressing roller in the pressing device can rotate at the upper end of the diaphragm passing through the pressing roller, raw materials which are unevenly sprayed at the upper end of the diaphragm can be pressed and flattened, the thickness of the diaphragm is kept consistent, the safety of the battery is improved, the service life of the battery is prolonged, the distance between the pressing roller and the diaphragm can be adjusted according to actual requirements, and the working efficiency of the battery is improved. And therefore, diaphragms with different thickness requirements can be pressed and covered.

Description

Technical Field

[0001] The utility model relates to the technical field of battery separator production, in particular to a spraying device for battery separator production. Background Technique

[0002] In the production process of battery separators, spraying is a key link, and its quality directly affects the performance of battery separators and the overall quality of batteries.

[0003] At present, there are many problems in existing spraying devices. For example, the spraying is uneven, resulting in inconsistent local thickness of the battery separator, which affects the safety and service life of the battery. And the heating intensity at any axial position in the drying device is the same. When the separator is gradually dried through the oven, due to the constant heating intensity in the drying device, the separator close to the target dryness will be over-dried, resulting in excessive water loss of some polymer components in the separator or other inappropriate chemical changes.

[0004] To solve the above problems, a spraying device for battery separator production is proposed in this application. Content of the Utility Model

[0005] The purpose of the utility model is to provide a spraying device for battery separator production to solve the problems of uneven spraying of battery separators and over-drying of battery separators in the prior art as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A spraying device for battery separator production, including a conveying frame, a traction roller is movably installed inside the conveying frame, a unwinding device and a winding device are respectively placed at both ends of the conveying frame, a spraying box, a pressing device and a drying box are sequentially installed on the upper end of the conveying frame along the direction from the unwinding device to the winding device. The pressing device includes an adjusting frame, and the adjusting frame is located on the outer surface of the upper end of the conveying frame. A telescopic bolt is fixedly connected to the lower outer surface of the adjusting frame, a U-shaped frame is fixedly connected to the lower outer surface of the telescopic bolt, a rotating shaft is fixedly connected to the inside of the U-shaped frame, and a pressing roller is movably sleeved on the outer wall of the rotating shaft.

[0007] Preferably, a threaded adjusting bolt is threadedly connected to the upper outer surface of the adjusting frame, and the threaded adjusting bolt penetrates through the lower end of the U-shaped frame.

[0008] Preferably, sliding grooves are respectively opened on the inner surfaces of both sides of the adjusting frame, sliding blocks are fixedly connected to the outer surfaces of both sides of the U-shaped frame, and the sliding blocks are movably sleeved in the sliding grooves.

[0009] Preferably, a cover plate is detachably installed on the outer surface of the upper end of the spraying box. A feeding port is arranged on the outer surface of the upper end of the cover plate. A spray head is fixedly connected to the outer surface of the lower end of the spraying box, and the upper end of the spray head communicates with the bottom of the spraying box.

[0010] Preferably, a motor is detachably installed on the outer surface of one side of the spraying box. One end of the motor is fixedly connected with a stirring shaft, and the stirring shaft is movably installed inside the spraying box.

[0011] Preferably, a plurality of infrared heating tubes are fixedly installed inside the drying box, and the installation height of the infrared heating tubes gradually increases in the direction towards the winding device.

[0012] Preferably, a heat preservation board is detachably installed on the outer surface of the upper end of the drying box. A plurality of ventilation pipes are evenly distributed on the outer surface of the lower end of the heat preservation board.

[0013] Preferably, a wind dispersing cover is fixedly connected to the outer surface of the upper end of the heat preservation board, and an air guiding pipe is fixedly connected to the outer surface of the upper end of the wind dispersing cover.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. In the utility model, the pressure roller in the pressing device rotates on the upper end of the passing diaphragm, so that the unevenly sprayed raw materials on the upper end of the diaphragm can be pressed flat, thereby keeping the thickness of the diaphragm consistent, improving the safety and service life of the battery, and the distance between the pressure roller and the diaphragm can be adjusted according to actual needs, so that it can press different diaphragms with different thickness requirements.

[0016] 2. In the utility model, the distance between the infrared heating tubes and the diaphragm gradually increases in the moving direction of the diaphragm, so that the humidity diaphragm initially entering the drying box receives the strongest drying force. Then, as the humidity of the diaphragm gradually decreases, the drying force will also gradually decrease, avoiding the diaphragm from becoming brittle due to excessive drying, thereby affecting the safety of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of a spraying device for producing battery diaphragms of the utility model;

[0018] Figure 2 It is a schematic diagram of the main structure of the pressing device in a spraying device for producing battery diaphragms of the utility model;

[0019] Figure 3 It is a schematic diagram of the main structure of the spraying box in a spraying device for producing battery diaphragms of the utility model;

[0020] Figure 4Schematic diagram of the internal structure of the spraying box in a spraying device for producing battery diaphragms according to the present utility model;

[0021] Figure 5 Schematic cross-sectional structure diagram of the drying box in a spraying device for producing battery diaphragms according to the present utility model;

[0022] Figure 6 Exploded structure diagram of the drying box in a spraying device for producing battery diaphragms according to the present utility model;

[0023] In the figure: 1, conveying frame; 2, traction roller; 3, unwinding device; 4, winding device; 5, spraying box; 6, pressing device; 7, drying box; 8, adjusting frame; 9, telescopic bolt; 10, U-shaped frame; 11, rotating shaft; 12, pressing roller; 13, threaded adjusting bolt; 14, chute; 15, slider; 16, cover plate; 17, feeding port; 18, nozzle; 19, motor; 20, stirring shaft; 21, infrared heating tube; 22, heat preservation board; 23, ventilation pipe; 24, air diffuser; 25, air duct. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] Please refer to Figures 1 - 6 , the present utility model provides a technical solution: a spraying device for producing battery diaphragms, including a conveying frame 1, a traction roller 2 is movably installed inside the conveying frame 1, an unwinding device 3 and a winding device 4 are respectively placed at both ends of the conveying frame 1, and a spraying box 5, a pressing device 6 and a drying box 7 are sequentially installed on the upper end of the conveying frame 1 along the direction from the unwinding device 3 to the winding device 4. The pressing device 6 includes an adjusting frame 8, and the adjusting frame 8 is located on the outer surface of the upper end of the conveying frame 1. A telescopic bolt 9 is fixedly connected to the outer surface of the lower end of the adjusting frame 8, and a U-shaped frame 10 is fixedly connected to the outer surface of the lower end of the telescopic bolt 9. A rotating shaft 11 is fixedly connected to the inside of the U-shaped frame 10, and a pressing roller 12 is movably sleeved on the outer wall of the rotating shaft 11.

[0026] In the above embodiment, the driving device on the winding device 4 drives the film on the unwinding device 3 to move inside the conveying frame 1, and multiple groups of traction rollers 2 are used for traction to prevent the film from shifting during movement. The U-shaped frame 10 is located at the lower end of the pressing device 6 and is connected by the telescopic bolt 9. Using the telescopic property of the telescopic bolt 9, the U-shaped frame 10 can move up and down at the lower end of the pressing device 6, thereby adjusting the distance between the pressing roller 12 and the film. The pressing roller 12 can rotate on the outer wall of the rotating shaft 11, thereby reducing the frictional resistance between the pressing roller 12 and the diaphragm.

[0027] In this embodiment, as Figure 2 shown, a threaded adjustment bolt 13 is threadedly connected to the outer surface of the upper end of the adjustment frame 8, and the threaded adjustment bolt 13 penetrates through the lower end of the U-shaped frame 10. Sliding grooves 14 are formed on the inner surfaces of both sides of the adjustment frame 8. Sliders 15 are fixedly connected to the outer surfaces of both sides of the U-shaped frame 10, and the sliders 15 are movably sleeved in the sliding grooves 14. Two circular plates are installed on the outer wall of the threaded adjustment bolt 13, respectively located at the upper and lower ends of the U-shaped frame 10, for pushing the U-shaped frame 10 to move. When the threaded adjustment bolt 13 is rotated, the height of the U-shaped frame 10 can be adjusted. By movably sleeving the slider 15 inside the sliding groove 14, the stability of the U-shaped frame 10 during movement can be increased.

[0028] In this embodiment, as Figure 3 Figure 4 shown, a cover plate 16 is detachably installed on the outer surface of the upper end of the spraying box 5. A feeding port 17 is provided on the outer surface of the upper end of the cover plate 16. A spray head 18 is fixedly connected to the outer surface of the lower end of the spraying box 5, and the upper end of the spray head 18 communicates with the bottom of the spraying box 5. Raw materials can be added to the spraying box 5 through the feeding port 17. The spray head 18 has a flat structure and is internally provided with multiple groups of fine spray holes, making the spraying more uniform; a motor 19 is detachably installed on the outer surface of one side of the spraying box 5. One end of the motor 19 is fixedly connected with a stirring shaft 20, and the stirring shaft 20 is movably installed inside the spraying box 5. By driving the stirring shaft 20 by the motor 19 to stir the spraying raw materials in the spraying box 5, the spraying raw materials in the spraying box 5 can be evenly mixed, preventing them from caking, which may cause uneven spraying or blockage of the spray holes.

[0029] In this embodiment, as Figure 5 Figure 6 shown, multiple groups of infrared heating tubes 21 are fixedly installed inside the drying box 7, and the installation height of the infrared heating tubes 21 facing the winding device 4 gradually increases; a heat preservation board 22 is detachably installed on the outer surface of the upper end of the drying box 7. Multiple groups of ventilation pipes 23 are evenly distributed on the outer surface of the lower end of the heat preservation board 22. The heat preservation board 22 can prevent the temperature inside the drying box 7 from escaping. Through the multiple groups of ventilation pipes 23 penetrating through the heat preservation board 22, air flow can be evenly introduced into the drying box 7, making the air flow blown into the drying box 7 evenly distributed; a wind dispersing cover 24 is fixedly connected to the outer surface of the upper end of the heat preservation board 22, and an air guiding pipe 25 is fixedly connected to the outer surface of the upper end of the wind dispersing cover 24. By connecting the air guiding pipe 25 to a fan, the air flow is transmitted to the wind dispersing cover 24 through the air guiding pipe 25, and then dispersed through the wind dispersing cover 24 to make it evenly distributed.

[0030] Working principle:

[0031] When using the spraying equipment for battery separator production, first, the winding device 4 drives the separator to be transmitted inside the conveying rack 1. When the separator passes through the bottom of the spraying box 5, the raw materials in the spraying box 5 will be sprayed onto the surface of the passing separator through the nozzle 18. When the separator passes through the bottom of the pressing device 6, the pressing roller 12 rotates on the upper surface of the separator to press and flatten the unevenly sprayed raw materials on the upper end of the separator, making the thickness of the separator uniform, thereby improving the safety and service life of the battery. Moreover, the distance between the pressing roller 12 and the separator can be adjusted according to actual needs. When the separator passes through the bottom of the drying oven 7, the infrared heating tube 21 inside the drying oven 7 generates heat. The wind enters the air dispersion hood 24 through the air guiding pipe 25, then is blown into the drying oven 7 through the ventilation pipe 23, and finally is blown onto the upper end of the separator after being heated by the infrared heating tube 21, thereby drying the separator. The distance between the infrared heating tube 21 and the separator gradually increases in the moving direction of the separator, so that the humidity separator initially entering the drying oven 7 receives the strongest drying force. Then, as the humidity of the separator gradually decreases, its drying force will also gradually become smaller, avoiding over-drying of the separator and causing the separator to become brittle, thereby affecting the safety of the battery.

[0032] Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A spraying device for producing battery separators, comprising a conveyor frame (1), characterized in that: A traction roller (2) is movably mounted on the inner side of the conveying frame (1); a reeling device (3) and a reeling device (4) are respectively placed at both ends of the conveying frame (1); a spray box (5), a pressing device (6) and a drying box (7) are sequentially mounted on the upper end of the conveying frame (1) along the direction from the reeling device (3) to the reeling device (4); the pressing device (6) comprises an adjusting frame (8), and the adjusting frame (8) is located on the outer surface of the upper end of the conveying frame (1); a telescopic bolt (9) is fixedly connected to the outer surface of the lower end of the adjusting frame (8); a U-shaped frame (10) is fixedly connected to the inner side of the U-shaped frame (10); a rotating shaft (11) is fixedly connected to the outer wall of the rotating shaft (11); a pressing roller (12) is movably sleeved on the outer wall of the rotating shaft (11).

2. A battery separator production spraying device according to claim 1, characterized in that: The outer surface of the upper end of the adjustment frame (8) is threadedly connected with a threaded adjustment bolt (13), and the threaded adjustment bolt (13) passes through the lower end of the U-shaped frame (10).

3. A battery separator production spraying device according to claim 1, characterized in that: The inner surfaces of both sides of the adjustment frame (8) are provided with sliding grooves (14), and the outer surfaces of both sides of the U-shaped frame (10) are fixedly connected with sliding blocks (15), and the sliding blocks (15) are movably sleeved in the sliding grooves (14).

4. A battery separator production spraying device according to claim 1, characterized in that: A cover plate (16) is detachably mounted on the upper outer surface of the spray box (5), and a feeding port (17) is provided on the upper outer surface of the cover plate (16). A spray head (18) is fixedly connected to the lower outer surface of the spray box (5), and the upper end of the spray head (18) is communicated with the bottom of the spray box (5).

5. The battery separator production spraying equipment according to claim 1, characterized in that: A motor (19) is detachably mounted on the outer surface of one side of the spray box (5), a stirring shaft (20) is fixedly connected to the outer surface of one end of the motor (19), and the stirring shaft (20) is movably mounted on the inner side of the spray box (5).

6. A battery separator production spraying device according to claim 1, characterized in that: A plurality of groups of infrared heating tubes (21) are fixedly installed on the inner side of the drying box (7), and the installation height of the infrared heating tubes (21) gradually increases towards the winding device (4).

7. The battery separator production spraying equipment according to claim 1, characterized in that: A heat preservation plate (22) is detachably mounted on the outer surface of the upper end of the drying box (7), and a plurality of ventilation pipes (23) are evenly distributed on the outer surface of the lower end of the heat preservation plate (22).

8. A battery separator production spraying device according to claim 7, characterized in that: The upper outer surface of the heat preservation plate (22) is fixedly connected to a wind dispersion cover (24), and the upper outer surface of the wind dispersion cover (24) is fixedly connected to an air duct (25).

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