Lithium battery diaphragm casting mold

Abstract

The utility model relates to the technical field of lithium battery diaphragm manufacturing, in particular to a lithium battery diaphragm casting mold. The lithium battery diaphragm casting mold comprises a support frame, a protective door, a blanking hopper, a liquid storage tank, a baffle plate, an air knife, a refrigeration box, a refrigeration pipe and the like, the protective door is slidably mounted on one side of the supporting frame, the discharging hopper is mounted on one side of the supporting frame, the liquid storage tank is mounted at the bottom of the discharging hopper, the baffle is slidably mounted on the lower portion of the liquid storage tank, the air knife is mounted on the side, close to the liquid storage tank, in the supporting frame, and the refrigerating box is mounted in the supporting frame and connected with two sets of refrigerating pipes. By arranging the contact plate, the lifting button and the prompting lamp, the contact plate is pushed to move upwards along with continuous winding of a diaphragm, when the contact plate moves upwards, the lifting button is pressed, the prompting lamp is turned on, a worker is reminded to replace the winding roller for winding, and the warning effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery diaphragm manufacturing, in particular to a lithium battery diaphragm casting die. Background Art

[0002] With the rapid development of new energy vehicles and energy storage systems, the demand for lithium batteries continues to increase. As a key link in the manufacture of lithium batteries, the manufacturing technology of diaphragms has also received widespread attention. Tape casting is a commonly used method for manufacturing diaphragms, and the tape casting mold is the core equipment of this method. Tape casting is a method of preparing a film or coating with a specific morphology and properties through processes such as melt plasticization, metering, casting, cooling, pulling, and winding. In the manufacture of lithium battery diaphragms, tape casting has the advantages of high production efficiency, uniform product thickness, and stable performance.

[0003] In the existing production process of lithium battery separator casting molds, it is necessary to carry out the process in a vacuum environment to eliminate the influence of air and volatiles on the polymer melt and improve the quality and performance of the separator, and a winding roller is usually used to wind up the produced separator. Since the production of separators is continuous during the casting process, if the staff fails to find that the winding roller has reached the winding limit in time, the separator will accumulate on the production line, resulting in production line shutdown, product quality decline, material waste and other problems.

[0004] Therefore, there is an urgent need for a lithium battery separator casting mold with an alarm function. Utility Model Content

[0005] In order to overcome the disadvantage that in the production process of the existing lithium battery diaphragm casting mold, the production of the diaphragm is continuous and the staff easily ignores the winding condition of the winding roller, the utility model provides a lithium battery diaphragm casting mold.

[0006] The technical scheme of the utility model is as follows: a lithium battery diaphragm casting mold, including a support frame, a liquid storage tank, an air knife, a refrigeration box, a refrigeration pipe, a cooling roller, a heating box, a heating pipe, an annealing roller, a driving motor, a transmission assembly, a winding roller, a servo motor, a support plate, a contact plate, a guide rod, a reset spring, a lifting button and a prompt light, a liquid storage tank is installed on the support frame, an air knife is installed on one side of the support frame near the liquid storage tank, a refrigeration box is installed in the support frame, two groups of refrigeration pipes are connected to the refrigeration box, cooling rollers are rotatably installed on the two groups of refrigeration pipes, and a heating roller is installed in the support frame. A box is provided, and a group of heating tubes are connected to the heating box. An annealing roller is rotatably installed on the heating tube. A driving motor is installed on one side of the support frame. The driving motor is connected to a transmission assembly through a coupling. The cooling roller and the annealing roller are both connected to the transmission assembly. A servo motor is installed on one side of the support frame. The servo motor is connected to a winding roller through a coupling. A support plate is installed on the side of the support frame away from the lower hopper. Guide rods are symmetrically and slidably installed on the support plate. A reset spring is provided on the guide rods. A contact plate is commonly installed on the two guide rods. A lifting button is provided at the bottom of the support plate, and a warning light is installed on the support plate.

[0007] Preferably, it also includes a protective door, a lower hopper and a baffle. The protective door is slidably installed on one side of the support frame, the lower hopper is installed on one side of the support frame, and the baffle is slidably installed on the lower part of the liquid storage tank.

[0008] Preferably, a vacuum suction hood is also included. The vacuum suction hood is installed in the support frame and is connected to the liquid storage tank.

[0009] Preferably, it also includes a limit frame, an adjustment rod and a diamond rod, a diamond rod is movably installed on one side of the winding roller, the diamond rod is connected to the limit frame, and the adjustment rod is installed on the limit frame.

[0010] Preferably, it also includes a limiting roller and an arc plate, a plurality of limiting rollers are rotatably installed in the support frame, and two arc plates are installed in the support frame.

[0011] Preferably, it also includes a limit block, a slider and a stretching roller. The limit block is symmetrically installed on the side of the support frame close to the servo motor. The slider is slidably installed in the limit block, and the two sliders are jointly installed with the stretching roller.

[0012] Preferably, a collecting box is also included, and the collecting box is slidably mounted on one side of the support frame close to the lower hopper.

[0013] Preferably, a transparent plate is further included, and the supporting frame is inlaid with the transparent plate.

[0014] The beneficial effects of the utility model are as follows: by providing a contact plate, a lifting button and a prompt light, as the diaphragm is continuously rolled up, the contact plate is pushed up, and when the contact plate moves up, the lifting button is pressed, so that the prompt light lights up, reminding the staff to replace the winding roller for winding, thereby achieving a warning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the components such as the lower hopper, drive motor and transmission assembly of the utility model.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the supporting plate, contact plate, guide rod and other components of the utility model.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the air knife, refrigeration box, refrigeration pipe and other components of the utility model.

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the annealing roller, limiting roller, curved plate and other components of the utility model.

[0020] Figure 6 It is a three-dimensional structural schematic diagram of the annealing roller, limiting roller, curved plate and other components of the utility model.

[0021] Figure 7 It is a three-dimensional structural schematic diagram of components such as a return spring, a prompt button and a prompt light of the utility model.

[0022] Figure 8 A schematic diagram of the three-dimensional structure of the winding roller, servo motor, limit frame and other components of the utility model.

[0023] Fig. 9 It is a three-dimensional structural schematic diagram of the limit frame, the adjustment rod and the diamond rod parts of the utility model.

[0024] The marks in the accompanying drawings are: 1-support frame, 2-protective door, 3-lower hopper, 4-liquid storage tank, 5-baffle, 6-vacuum suction hood, 7-air knife, 8-refrigeration box, 9-refrigeration pipe, 10-cooling roller, 11-heating box, 12-heating pipe, 13-annealing roller, 14-limiting roller, 15-arc plate, 16-drive motor, 17-transmission assembly, 18-winding roller, 19-servo motor, 20-limiting frame, 21-adjusting rod, 22-diamond rod, 23-support plate, 24-contact plate, 25-guide rod, 26-reset spring, 27-lifting button, 28-prompt light, 29-limiting block, 30-slider, 31-stretching roller, 32-collection box, 33-transparent plate. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Example 1

[0027] A lithium battery diaphragm casting mold, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, it includes a support frame 1, a protective door 2, a lower hopper 3, a liquid storage tank 4, a baffle 5, an air knife 7, a refrigeration box 8, a refrigeration pipe 9, a cooling roller 10, a heating box 11, a heating pipe 12, an annealing roller 13, a driving motor 16, a transmission assembly 17, a winding roller 18, a servo motor 19, a support plate 23, a contact plate 24, a guide rod 25, a reset spring 26, a lifting button 27 and a prompt light 28. The front side of the support frame 1 is slidably provided with a protective door 2, the left side of the top of the support frame 1 is installed with a lower hopper 3, the bottom of the lower hopper 3 is connected to the liquid storage tank 4, the lower part of the liquid storage tank 4 is slidably provided with a baffle 5, and a handle is provided on the left side of the baffle 5 The handle makes it easy for the staff to operate the baffle 5 to control the amount of polymer melt flowing down. There is an air knife 7 on the left side of the support frame 1. A refrigeration box 8 is installed on the front side of the support frame 1. Two groups of refrigeration pipes 9 are connected to the refrigeration box 8. The two groups of refrigeration pipes 9 are installed on the support frame 1 through a fixed drum rack. The fixed drum rack where the two groups of refrigeration pipes 9 are located is rotatably provided with a cooling roller 10. The cooling roller 10 can quickly cool and shape the newly formed film to prevent it from adhering to other components. The air knife 7 is close to the cooling roller 10 on the left side, so that the air knife 7 can blow the initially formed film onto the cooling roller 10. A heating box 1 is arranged on the front side of the support frame 1. 1, a group of heating pipes 12 are connected to the heating box 11, and the heating pipes 12 are also fixedly installed on the support frame 1 in the same way as the refrigeration pipes 9. An annealing roller 13 is rotatably installed on the fixed drum frame where the heating pipe 12 is located. The annealing roller 13 can anneal the film to improve its performance and stability. A driving motor 16 is installed on the front side of the support frame 1, and a transmission assembly 17 is installed in the front of the support frame 1. The transmission assembly 17 includes three transmission shafts and a flat belt. The front sides of the two cooling rollers 10 and the annealing roller 13 are all provided with transmission shafts. The three transmission shafts are connected to the flat belt together. The driving motor 16 is connected to the middle transmission shaft through a coupling. A servo motor 19 is installed on the rear side of the support frame 1, and a winding roller 18 is rotatably installed on the right end of the support frame 1. The servo motor 19 is connected to the rear end of the winding roller 18 through a coupling, and a support plate 23 is installed on the lower left side of the support frame 1. The support plate 23 is slidably provided with two guide rods 25, and the two guide rods 25 are both provided with reset springs 26. The bottoms of the two guide rods 25 are commonly connected with a contact plate 24, and the contact plate 24 is an arc-shaped plate, which is tightly fitted with the wound diaphragm. A lifting button 27 is installed on the lower middle side of the support plate 23, and a warning light 28 is installed on the top of the support plate 23. The warning light 28 will be turned on when the lifting button 27 is pressed.

[0028] like Figure 4-Figure 6As shown, it also includes limiting rollers 14 and arc plates 15. Three limiting rollers 14 are rotatably installed in the support frame 1. The limiting rollers 14 can limit the width and shape of the film to ensure that it meets the requirements. Two arc plates 15 are installed in the support frame 1, so that the film can move along the arc plates 15 and is not easily offset.

[0029] When the diaphragm production is required, the refrigeration box 8, the heating box 11 and the driving motor 16 are first started. The refrigeration box 8 and the heating box 11 cool the cooling roller 10 and heat the annealing roller 13 through the refrigeration pipe 9 and the heating pipe 12 respectively. The driving motor 16 drives the cooling roller 10 and the annealing roller 13 to rotate through the transmission component 17 so that the produced diaphragm can move continuously. Then the molten polymer melt is poured into the lower hopper 3, and the polymer melt flows into the liquid storage tank 4. The baffle 5 is opened to allow the polymer melt to continue to flow down in small quantities. The air knife 7 blows the polymer melt to turn it into a film and keep a certain shape. Then the initially formed film is blown onto the cooling roller 10 and then passes through the limiting roller 14, and then moves another cooling roller through the curved plate 15. The roller 10 then passes through another limiting roller 14 and then moves through another arc plate 15. The cooling roller 10 can quickly cool and shape the newly formed film, and then the film rotates and moves with the annealing roller 13, so as to anneal the film and improve its performance and stability. Finally, it bypasses a limiting roller 14 and starts the servo motor 19. The servo motor 19 drives the winding roller 18 to rotate, so that the completed diaphragm is wound around the winding roller 18 for winding. As the diaphragm is continuously wound, the contact plate 24 is continuously moved up, and the guide rod 25 moves up accordingly. When the contact plate 24 moves up to contact the lifting button 27, it is pressed to make the prompt light 28 light up, reminding the staff to replace the winding roller 18 for winding.

[0030] Example 2

[0031] On the basis of Example 1, Figure 2 and Figure 4 As shown, it also includes a vacuum suction hood 6, a collecting box 32 and a transparent plate 33. The vacuum suction hood 6 is installed in the middle of the support frame 1 through the mounting plate, and the vacuum suction hood 6 is connected to the left side of the liquid storage tank 4. During the casting process, the vacuum suction hood 6 can remove volatiles and air to prevent them from affecting the polymer melt. A collecting box 32 is slidingly arranged on the lower side of the support frame 1. The collecting box 32 can collect the fallen polymer melt and other materials that have not formed a diaphragm. A transparent plate 33 is inlaid on the left side of the top of the support frame 1. Through the transparent plate 33, the operator can easily observe the production status and quality control of the diaphragm during the casting process.

[0032] like Figure 8 and Fig. 9As shown, it also includes a limit frame 20, an adjustment rod 21 and a diamond rod 22. The limit frame 20 is slidably installed on the right side of the support frame 1. The limit frame 20 is installed with an adjustment rod 21. The adjustment rod 21 is connected to the diamond rod 22. The diamond rod 22 is movably connected to the front side of the winding roller 18.

[0033] like Figure 7 As shown, it also includes a limit block 29, a slider 30 and a stretching roller 31. The limit block 29 is symmetrically installed on the right side of the support frame 1. The limit block 29 includes a fixed rod, a spring and a limit frame. The front and rear sides of the right side of the support frame 1 are inlaid with limit frames. Two fixed rods are symmetrically installed in the limit frame. Springs are sleeved on the fixed rods. Slide blocks 30 are slidably installed on the four fixed rods. The two slide blocks 30 are commonly connected to the stretching roller 31.

[0034] When the winding roller 18 needs to be replaced, the limit frame 20 is pulled out through the adjusting rod 21 so that the diamond rod 22 is separated from the winding roller 18, and the winding roller 18 can be quickly removed. After replacing the new winding roller 18, the limit frame 20 is pushed back through the adjusting rod 21 so that the diamond rod 22 is clamped and fixed to the new winding roller 18. When the diaphragm is not smooth and tight before the winding roller 18 and is not easy to wind, the diaphragm is passed around the stretching roller 31. The stretching roller 31 can make the sliders 30 on both sides slide on the limit blocks 29 until the diaphragm is tight according to the tightness of the diaphragm, ensuring smooth and uniform winding, thereby improving product quality and production efficiency.

[0035] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications, improvements and substitutions can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A lithium battery diaphragm casting mold, comprising a support frame (1), a liquid storage tank (4), an air knife (7), a refrigeration box (8), a refrigeration pipe (9), a cooling roller (10), a heating box (11), a heating pipe (12), an annealing roller (13), a driving motor (16), a transmission component (17), a winding roller (18) and a servo motor (19), wherein the liquid storage tank (4) is installed on the support frame (1), an air knife (7) is installed on one side of the support frame (1) close to the liquid storage tank (4), a refrigeration box (8) is installed in the support frame (1), two groups of refrigeration pipes (9) are connected to the refrigeration box (8), and the two groups of refrigeration pipes (9) are connected to the refrigeration box (8). (9) are rotatably mounted with a cooling roller (10), a heating box (11) is mounted in the support frame (1), a group of heating pipes (12) are connected to the heating box (11), an annealing roller (13) is rotatably mounted on the heating pipe (12), a driving motor (16) is mounted on one side of the support frame (1), the driving motor (16) is connected to a transmission assembly (17) via a coupling, the cooling roller (10) and the annealing roller (13) are both connected to the transmission assembly (17), a servo motor (19) is mounted on one side of the support frame (1), the servo motor (19) is connected to a winding roller (18) via a coupling, and is characterized in that: The invention also comprises a support plate (23), a contact plate (24), a guide rod (25), a return spring (26), a lifting button (27) and a warning light (28); a support plate (23) is installed on the side of the support frame (1) away from the lower hopper (3); guide rods (25) are symmetrically and slidably installed on the support plate (23); a return spring (26) is sleeved on the guide rods (25); a contact plate (24) is installed on the two guide rods (25); a lifting button (27) is arranged at the bottom of the support plate (23); and a warning light (28) is installed on the support plate (23).

2. A lithium battery separator casting mold according to claim 1, characterized in that: It also comprises a protective door (2), a lower hopper (3) and a baffle (5); the protective door (2) is slidably mounted on one side of the support frame (1); the lower hopper (3) is mounted on one side of the support frame (1); and the baffle (5) is slidably mounted on the lower part of the liquid storage tank (4).

3. A lithium battery separator casting mold according to claim 2, characterized in that: It also includes a vacuum suction hood (6), which is installed in the support frame (1) and is connected to the liquid storage box (4).

4. A lithium battery separator casting mold according to claim 3, characterized in that: It also comprises a limit frame (20), an adjusting rod (21) and a rhombus rod (22); a rhombus rod (22) is movably mounted on one side of the winding roller (18); the rhombus rod (22) is connected to the limit frame (20); and the adjusting rod (21) is mounted on the limit frame (20).

5. A lithium battery separator casting die according to claim 4, characterized in that: It also comprises a limiting roller (14) and an arc-shaped plate (15); a plurality of limiting rollers (14) are rotatably mounted in the support frame (1); and two arc-shaped plates (15) are mounted in the support frame (1).

6. A lithium battery separator casting die according to claim 5, characterized in that: The device also comprises a limit block (29), a slider (30) and a stretching roller (31); the limit block (29) is symmetrically mounted on one side of the support frame (1) close to the servo motor (19); the slider (30) is slidably mounted inside the limit block (29); and the two sliders (30) are jointly mounted with the stretching roller (31).

7. A lithium battery separator casting die according to claim 6, characterized in that: It also includes a collecting box (32), and the collecting box (32) is slidably mounted on one side of the support frame (1) close to the lower hopper (3).

8. A lithium battery separator casting die according to claim 7, characterized in that: It also includes a transparent plate (33), and the supporting frame (1) is inlaid with the transparent plate (33).

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