Lithium battery film dispensing equipment

Abstract

The utility model relates to the technical field of lithium battery film point coating, in particular to lithium battery film point coating equipment which comprises a base, a conveying structure, supporting plates, a rotating shaft, a guide roller, a guide rail and a sliding block, the base is fixedly connected with the two supporting plates, and the conveying structure for conveying a lithium battery film is arranged between the two supporting plates. A rotating shaft is rotationally arranged between the two supporting plates, a guide roller is fixedly connected to the rotating shaft, a guide rail is fixedly connected between the two supporting plates, and three sliding blocks are arranged in the guide rail in a sliding mode. By rotating the screw rod, the screw rod drives the fixed seat on the screw rod to move, the shear shank is compressed while the fixed seat moves, the shear shank drives the two connecting plates and the two connecting shafts to move inwards, the connecting plates move inwards and drive the sliding blocks and the point coating heads on the connecting plates to move inwards, and therefore the spraying range can be adjusted; and therefore, lithium battery films with different widths can be sprayed, and waste of slurry is avoided.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery thin film coating technology, and in particular to a lithium battery thin film coating device. Background Technology

[0002] Lithium-ion battery thin film dot coating is a high-precision electrode coating process, mainly used to uniformly coat active material slurry onto the copper or aluminum foil current collector of the positive or negative electrode of lithium-ion batteries to form a thin and uniform electrode film layer.

[0003] Patent CN221493059U discloses a lithium battery thin film coating machine with a drying function. It includes a support base, a protective frame, an electric slide rail, an electric slider, a liquid storage tank, and spray pipes. The protective frame is mounted on the support base, and an electric slide rail is mounted at the top inside the protective frame. An electric slider is slidably connected inside the electric slide rail, and a liquid storage tank is mounted at the bottom of the electric slider. Spray pipes are mounted on both sides of the liquid storage tank. When using this patent, the thin film is placed in a clamping plate, the electric slide rail drives the electric slider to slide, the spray pipes coat the film surface with liquid, a scraper smooths the liquid, and a drying component dries the liquid. However, the spray pipe in the aforementioned prior art is of a fixed size. When spraying a film smaller than the spraying range of the pipe, the spray pipe will directly spray excess slurry onto the non-coating area, resulting in material waste and requiring frequent machine shutdowns for cleaning.

[0004] Therefore, there is a need for a lithium battery thin film coating device capable of coating films of different widths. Utility Model Content

[0005] In order to overcome the shortcomings of the existing patents, where the spray pipe is of a fixed size and when spraying films smaller than the spray pipe's spray range, the spray pipe will directly spray excess slurry onto non-coated areas, resulting in material waste and requiring frequent shutdowns for cleaning, this utility model provides a lithium battery thin film dot coating device that can coat films of different widths.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: a lithium battery thin film coating device, comprising a base, a conveying structure, support plates, a rotating shaft, guide rollers, a guide rail, sliders, a coating head, a feed pump, a conveying pipe, and a connecting pipe. Two support plates are fixedly connected to the base, and a conveying structure for transporting lithium battery thin films is provided between the two support plates. A rotating shaft is rotatably arranged between the two support plates, and a guide roller is fixedly connected to the rotating shaft. A guide rail is fixedly connected between the two support plates, and three sliders are slidably arranged within the guide rail. A coating head is mounted on each slider. A feed pump is installed on the base, and a conveying pipe is connected to the feed pump. A connecting pipe connects the conveying pipe to each of the three feed pumps. The device also includes a connecting plate, a connecting shaft, a scissor bracket, a fixed seat, a support seat, and a screw. A connecting plate is fixedly connected to each slider, and a connecting shaft is rotatably arranged on each of the two connecting plates. A scissor bracket is provided between the two connecting shafts. A fixed seat is fixedly connected to one of the connecting shafts. A support seat is fixedly attached to the guide rail, and a screw is threaded onto the support seat. The fixed seat is fixedly connected to the screw.

[0007] In one embodiment, the conveying structure includes a first conveying roller, a second conveying roller, a third conveying roller, and a fourth conveying roller. The first conveying roller is rotatably disposed between two support plates, the second conveying roller is rotatably disposed between two support plates, the third conveying roller is rotatably disposed between two support plates, and the fourth conveying roller is rotatably disposed between two support plates.

[0008] In one embodiment, the system further includes a support rod, a cylinder, a mounting rod, a sliding rod, a scraper, and an elastic element. A support rod is fixedly connected between the middle of the two support plates. A cylinder is installed in the middle of the support rod. A mounting rod is installed on the telescopic rod of the cylinder. Sliding rods are slidably provided on both the front and rear parts of the mounting rod. A scraper is fixedly connected between the ends of the two sliding rods. The scraper is V-shaped. An elastic element is sleeved on the sliding rod. The two ends of the elastic element are connected to the mounting rod and the scraper, respectively.

[0009] In one embodiment, the device further includes a mounting bracket, an air duct fan, and an electric heating element. The mounting bracket is fixed between two support plates, and two air duct fans are mounted on the mounting bracket. The electric heating element is also mounted on the mounting bracket.

[0010] In one embodiment, the system further includes a limiting sleeve, a fixing rod, and a lever. Two limiting sleeves are slidably disposed on the guide roller, a fixing rod is fixedly connected to the limiting sleeve, and a lever is slidably disposed on the fixing rod. The lever is rotatably connected to a nearby connecting shaft.

[0011] In one embodiment, the system also includes a discharge valve, a discharge trough on the base, a collection trough inside the base, the discharge trough and the collection trough being connected, and a discharge valve installed on the base, which is connected to the collection trough.

[0012] In one embodiment, a protective cover is also included, with two protective covers mounted on the mounting bracket.

[0013] In one embodiment, a support roller is also included, which is rotatably mounted on the base.

[0014] Compared with the prior art, the present invention has the following technical effects: 1. By rotating the screw, the screw drives the fixed seat on itself to move. While the fixed seat moves, it compresses the scissor frame, which drives the two connecting plates and two connecting axes to move inward. While the connecting plates move inward, they drive the slider and the dotting head on themselves to move inward. This can adjust the spraying range and enable the spraying of lithium battery films of different widths, thereby avoiding slurry waste.

[0015] 2. By activating the cylinder, the extension rod of the cylinder extends, causing the mounting rod, scraper, two elastic elements, and two sliding rods to move downwards. When the scraper comes into contact with the lithium battery film and the slurry on it, the contact between the lithium battery film and the slurry on it compresses the scraper and sliding rods to move upwards, and the elastic elements are compressed accordingly to provide buffering. This allows the scraper to smooth the slurry on the lithium battery film, thereby ensuring that the slurry is fully coated on the lithium battery film.

[0016] 3. By activating the air guide fan and electric heating tube, the air guide fan draws in outside air, which combines with the heat generated by the electric heating tube to form hot air, which is then blown onto the lithium battery film, thereby drying the slurry on the lithium battery film.

[0017] 4. By moving the two connecting axes inward, the fixed rod on itself moves, and the fixed rod moves, which in turn moves the limiting sleeve. This changes the position of the two limiting sleeves, thereby limiting lithium battery films of different widths.

[0018] 5. Excess slurry falls from both sides of the scraper into the discharge trough, and then into the collection trough for collection. Finally, by rotating the discharge valve, the slurry is discharged from the collection trough, thus enabling collection, mixing, and reuse, improving slurry utilization and reducing production costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional sectional view of the base, support plate, and mounting bracket of this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the support rod, mounting rod, and scraper of this utility model.

[0022] Figure 4This is a three-dimensional sectional view of the guide rail, connecting plate, and scissor bracket of this utility model.

[0023] Figure 5 This is a three-dimensional sectional view of the mounting bracket, air guide fan, and electric heating tube of this utility model.

[0024] Figure 6 This is a three-dimensional structural diagram of the base, discharge valve, and support roller of this utility model.

[0025] In the attached diagram, the following are the reference numerals: 1-base, 2-support plate, 3-first conveyor roller, 4-second conveyor roller, 401-third conveyor roller, 402-fourth conveyor roller, 5-rotating shaft, 6-guide roller, 7-guide rail, 8-slider, 9-dotting head, 10-feed pump, 11-conveying pipe, 12-connecting pipe, 13-connecting plate, 14-connecting shaft, 15-scissor frame, 16-fixed seat, 17-support seat, 18-screw, 19-support rod, 20-cylinder, 21-mounting rod, 22-slide rod, 23-scraper, 24-elastic element, 25-mounting bracket, 26-air guide fan, 27-electric heating tube, 28-limiting sleeve, 29-fixed rod, 30-pulling rod, 31-discharge chute, 32-discharge valve, 33-collection trough, 34-protective cover, 35-support roller. Detailed Implementation

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] Example 1: A lithium battery thin film coating device, see reference. Figures 1-2 and Figures 4-6As shown, the system includes a base 1, a conveying structure, support plates 2, a rotating shaft 5, guide rollers 6, guide rails 7, sliders 8, a dotting head 9, a feed pump 10, a conveying pipe 11, and a connecting pipe 12. Support plates 2 are symmetrically fixedly connected to the top of the base 1. A conveying structure for conveying lithium battery films is located between the two support plates 2. A rotating shaft 5 is rotatably mounted between the right sides of the two support plates 2, and guide rollers 6 are fixedly connected to the rotating shaft 5. A guide rail 7 is welded between the right sides of the two support plates 2, located to the left of the rotating shaft 5. Three sliders 8 are evenly spaced and slidably mounted inside the guide rail 7, and dotting heads 9 are installed on the sliders 8. A feed pump 10 is bolted to the front right side of the base 1. The upper part is connected to a conveying pipe 11, and each of the three feed pumps 10 is connected to a connecting pipe 12. The connecting pipe 12 is a flexible hose. It also includes a connecting plate 13, a connecting shaft 14, a scissor bracket 15, a fixed seat 16, a support seat 17, and a screw 18. The connecting plate 13 is welded to the right side of the slider 8. The two connecting plates 13 on the outer side are rotatably equipped with connecting shafts 14. The scissor bracket 15 is set between the two connecting shafts 14. The fixed seat 16 is welded to the bottom end of the connecting shaft 14 at the front. The support seat 17 is welded to the right side of the front part of the guide rail 7. The screw 18 is threaded on the support seat 17. The fixed seat 16 is fixedly connected to the end of the screw 18.

[0028] When applying a coating to the lithium battery film, rotating the screw 18 causes the fixed seat 16 on it to move. Simultaneously, the fixed seat 16 compresses the scissor frame 15, causing the scissor frame 15 to move the two connecting plates 13 and two connecting shafts 14 inwards. The connecting plates 13, in turn, move the slider 8 and the coating head 9 inwards, thus adjusting the spraying range and enabling the coating of lithium battery films of different widths, thereby avoiding slurry waste. After adjustment, the lithium battery film is wound around the conveying structure, and the feed pump 10 is connected to the external feed pipe. Finally, the feed pump 10 is started, drawing slurry and channeling it through the conveying pipe 11 and connecting pipe 12 into the coating head 9, where the coating head 9 sprays the slurry onto the lithium battery film.

[0029] Example 2: Based on Example 1, refer to Figure 1 , Figure 2 and Figure 6As shown, the conveying structure includes a first conveying roller 3, a second conveying roller 4, a third conveying roller 401, and a fourth conveying roller 402. The first conveying roller 3 is rotatably arranged between the right sides of the two support plates 2. The second conveying roller 4 is rotatably arranged between the right sides of the two support plates 2. The second conveying roller 4 is located to the upper left of the first conveying roller 3. The rotating shaft 5 is located to the left of the second conveying roller 4. The third conveying roller 401 is rotatably arranged between the left sides of the two support plates 2. The fourth conveying roller 402 is rotatably arranged between the left sides of the two support plates 2. The fourth conveying roller 402 is located to the upper left of the third conveying roller 401. The first conveying roller 3, the second conveying roller 4, the third conveying roller 401, and the fourth conveying roller 402 are arranged in an inverted V-shape.

[0030] When it is necessary to wrap the lithium battery film around the conveyor structure, the lithium battery film is passed between the first conveyor roller 3 and the base 1, then around the second conveyor roller 4, and passed between the guide roller 6 and the base 1. Then the lithium battery film is passed between the third conveyor roller 401 and the base 1, and then wrapped around the fourth conveyor roller 402. Finally, the end of the lithium battery film is wrapped around the electric take-up roller, and then the dot coating operation is performed.

[0031] See Figure 2 and Figure 3 As shown, it also includes a support rod 19, a cylinder 20, a mounting rod 21, a sliding rod 22, a scraper 23, and an elastic element 24. The support rod 19 is welded between the two support plates 2. The cylinder 20 is bolted to the middle of the support rod 19. The mounting rod 21 is mounted on the telescopic rod of the cylinder 20. The sliding rod 22 is slidably mounted on both the front and rear ends of the mounting rod 21. The scraper 23 is fixedly connected between the ends of the two sliding rods 22. The scraper 23 is V-shaped. The elastic element 24 is sleeved on the sliding rod 22. The two ends of the elastic element 24 are connected to the mounting rod 21 and the scraper 23, respectively.

[0032] See Figure 2 and Figure 6 As shown, it also includes a support roller 35, which is rotatably mounted on the base 1. The support roller 35 is located in the material discharge trough 31 and is in contact with the scraper 23.

[0033] After the lithium battery film is passed between the guide roller 6 and the base 1, it is then passed between the scraper 23 and the base 1. After being dotted by the dotting head 9, the cylinder 20 is activated. The extension rod of the cylinder 20 extends, causing the mounting rod 21, scraper 23, two elastic elements 24, and two sliding rods 22 to move downward. When the scraper 23 comes into contact with the lithium battery film and the slurry on it, the contact between the lithium battery film and the slurry on it compresses the scraper 23 and the sliding rods 22 to move upward. The elastic elements 24 are compressed accordingly to provide cushioning. This allows the scraper 23 to smooth the slurry on the lithium battery film, ensuring that the slurry is fully coated on the lithium battery film. At the same time as smoothing, the support roller 35 supports the lithium battery film.

[0034] See Figure 2 and Figure 5 As shown, it also includes a mounting bracket 25, an air guide fan 26, and an electric heating tube 27. The mounting bracket 25 is welded between the left sides of the two support plates 2. The mounting bracket 25 is located between the third conveying roller 401 and the support rod 19. The air guide fan 26 is bolted to both the front and rear parts of the mounting bracket 25. The electric heating tube 27 is bolted to the lower part of the mounting bracket 25. The electric heating tube 27 is located below the two air guide fans 26.

[0035] See Figure 5 As shown, it also includes a protective cover 34, and the protective cover 34 is symmetrically installed on the top of the mounting bracket 25 by means of bolt connection.

[0036] After the scraper 23 smooths the slurry on the lithium battery film, the air guide fan 26 and the electric heating tube 27 are activated. The air guide fan 26 draws in outside air and combines it with the heat generated by the electric heating tube 27 to form hot air, which is then blown onto the lithium battery film to dry the slurry on the lithium battery film, making it easier to collect. When spot coating is not required, the air guide fan 26, the electric heating tube 27 and other electronic equipment can be turned off. The protective cover 34 can prevent external impurities from falling into the air guide fan 26.

[0037] See Figure 4 As shown, it also includes a limiting sleeve 28, a fixing rod 29 and a lever 30. The guide roller 6 is slidably provided with limiting sleeves 28 at both the front and rear. The fixing rod 29 is fixedly connected to the limiting sleeve 28. The lever 30 is slidably provided on the fixing rod 29. The end of the lever 30 is rotatably connected to the nearby connecting shaft 14.

[0038] When the scissor holder 15 is compressed, the scissor holder 15 drives the two connecting shafts 14 to move inward. As the two connecting shafts 14 move inward, they also drive the fixed rod 29 on themselves to move. As the fixed rod 29 moves, it drives the limiting sleeve 28 to move. This changes the position of the two limiting sleeves 28, thereby limiting lithium battery films of different widths.

[0039] See Figure 2 and Figure 6 As shown, it also includes a discharge valve 32, a discharge trough 31 on the base 1, the discharge trough 31 is located below the scraper 23, a collection trough 33 is opened inside the base 1, the discharge trough 31 and the collection trough 33 are connected, and the discharge valve 32 is installed on the front side of the middle of the base 1 by means of bolt connection, the discharge valve 32 and the collection trough 33 are connected.

[0040] When the scraper 23 flattens the slurry on the lithium battery film, the excess slurry falls from both sides of the scraper into the discharge trough 31, and then into the collection trough 33 for collection. Finally, by rotating the discharge valve 32, the slurry is discharged from the collection trough 33, which can be collected, mixed and reused, improving the slurry utilization rate and reducing production costs.

[0041] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.

Claims

1. A lithium battery thin film coating device, comprising a base (1), a conveying structure, a support plate (2), a rotating shaft (5), a guide roller (6), a guide rail (7), a slider (8), a coating head (9), a feed pump (10), a conveying pipe (11), and a connecting pipe (12), wherein two support plates (2) are fixedly connected to the base (1), a conveying structure for conveying lithium battery thin film is provided between the two support plates (2), a rotating shaft (5) is rotatably arranged between the two support plates (2), a guide roller (6) is fixedly connected to the rotating shaft (5), a guide rail (7) is fixedly connected between the two support plates (2), three sliders (8) are slidably arranged inside the guide rail (7), a coating head (9) is installed on the slider (8), a feed pump (10) is installed on the base (1), a conveying pipe (11) is connected to the feed pump (10), and a connecting pipe (12) is connected between the conveying pipe (11) and the three feed pumps (10), characterized in that: It also includes a connecting plate (13), a connecting shaft (14), a scissor bracket (15), a fixed seat (16), a support seat (17), and a screw (18). The connecting plate (13) is fixedly connected to the slider (8). The connecting shaft (14) is rotatably set on both connecting plates (13). The scissor bracket (15) is set between the two connecting shafts (14). The fixed seat (16) is fixedly connected to one of the connecting shafts (14). The support seat (17) is fixedly connected to the guide rail (7). The screw (18) is threaded on the support seat (17). The fixed seat (16) is fixedly connected to the screw (18).

2. The lithium battery thin film coating equipment as described in claim 1, characterized in that: The conveying structure includes a first conveying roller (3), a second conveying roller (4), a third conveying roller (401) and a fourth conveying roller (402). The first conveying roller (3) is rotatably arranged between two support plates (2), the second conveying roller (4) is rotatably arranged between two support plates (2), the third conveying roller (401) is rotatably arranged between two support plates (2), and the fourth conveying roller (402) is rotatably arranged between two support plates (2).

3. The lithium battery thin film coating equipment as described in claim 2, characterized in that: It also includes a support rod (19), a cylinder (20), an mounting rod (21), a sliding rod (22), a scraper (23), and an elastic element (24). The support rod (19) is fixedly connected between the middle of the two support plates (2). The cylinder (20) is installed in the middle of the support rod (19). The mounting rod (21) is installed on the telescopic rod of the cylinder (20). The sliding rod (22) is slidably installed on both the front and rear parts of the mounting rod (21). The scraper (23) is fixedly connected between the ends of the two sliding rods (22). The scraper (23) is V-shaped. The elastic element (24) is sleeved on the sliding rod (22). The two ends of the elastic element (24) are connected to the mounting rod (21) and the scraper (23) respectively.

4. The lithium battery thin film coating equipment as described in claim 3, characterized in that: It also includes a mounting bracket (25), a duct fan (26) and an electric heating tube (27). The mounting bracket (25) is fixed between the two support plates (2). Two duct fans (26) are mounted on the mounting bracket (25), and an electric heating tube (27) is mounted on the mounting bracket (25).

5. The lithium battery thin film coating equipment as described in claim 4, characterized in that: It also includes a limiting sleeve (28), a fixing rod (29) and a lever (30). Two limiting sleeves (28) are slidably arranged on the guide roller (6). A fixing rod (29) is fixedly connected to the limiting sleeve (28). A lever (30) is slidably arranged on the fixing rod (29). The lever (30) is rotatably connected to the nearby connecting shaft (14).

6. The lithium battery thin film coating equipment as described in claim 5, characterized in that: It also includes a discharge valve (32), a discharge trough (31) on the base (1), a collection trough (33) inside the base (1), the discharge trough (31) and the collection trough (33) are connected, and a discharge valve (32) is installed on the base (1), and the discharge valve (32) is connected to the collection trough (33).

7. The lithium battery thin film coating equipment as described in claim 6, characterized in that: It also includes a protective cover (34), and two protective covers (34) are mounted on the mounting bracket (25).

8. The lithium battery thin film coating equipment as described in claim 7, characterized in that: It also includes a support roller (35), which is rotatably mounted on the base (1).

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