A coating machine for lithium battery production

Abstract

This utility model relates to the field of lithium battery production technology, and in particular to a coating machine for lithium battery production. It includes a coating frame, a coating die head fixed to the upper side inside the frame, a conveying mechanism located on the lower side inside the frame, and multiple drying boxes arranged in a linear array fixed to the film exit end of the frame. A winding mechanism is located at the end of each drying box away from the coating frame. The machine also includes a cleaning mechanism located to one side of the coating die head. The film conveying mechanism drives a lint roller to roll on top of the lint roller, thereby removing any hair that may be adsorbed onto the film. Simultaneously, a vacuum generator and a suction pipe create suction within a dust hood surrounding the lint roller, allowing the dust hood to remove debris from the top of the film, preventing dust, hair, and other debris from affecting the coating quality.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a coating machine for lithium battery production. Background Technology

[0002] According to the patent document with publication number CN219400701U, two positioning plates are driven to move closer or further apart by a bidirectional lead screw, thereby adjusting the distance between the two positioning plates according to the width of the electrode sheet. Then, the first servo motor, the second servo motor and the electric heating plate work, and the first driven rubber roller rotates to move the electrode sheet to the right. At the same time, the nozzle applies coating material to the electrode sheet as it passes. Then, the coating material on the electrode sheet is dried in a drying oven.

[0003] The patent document does not include a mechanism for protecting or cleaning the electrode sheets before coating them. If dust, hair, or other debris falls onto the electrode sheets, the coating material will be sprayed onto the electrode sheets as the nozzle applies the coating material, which may affect the quality of the subsequent lithium battery. Utility Model Content

[0004] The purpose of this invention is to provide a coating machine for lithium battery production in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A coating machine for lithium battery production includes a coating frame, a coating die head fixed on the upper side inside the coating frame, a conveying mechanism on the lower side inside the coating frame, a plurality of drying boxes arranged in a linear array fixed at the film outlet end of the coating frame, a winding mechanism at the end of the plurality of drying boxes away from the coating frame, and a cleaning mechanism located on one side of the coating die head.

[0007] The cleaning mechanism includes a dust suction hood with a dust suction slot at the bottom for adsorbing dust from the film surface. Inside the dust suction hood is a lint roller for pressing onto the film. Support shafts are fixed at both ends of the lint roller. The ends of the two support shafts that are far apart from each other pass through the dust suction hood, and the ends of the two support shafts that extend out of the dust suction hood are equipped with limiting components. Dust suction pipes are fixed at both ends of the dust suction hood. The dust suction pipes are located on the upper side of the support shafts, and a vacuum generator is fixed at the end of the dust suction pipe that extends out of the coating frame.

[0008] Preferably, the limiting assembly includes two fixing plates, which are respectively fixed on the front and rear sides of the coating machine frame. Each fixing plate is fixed with a spring, and each spring has a limiting seat fixed at its upper end. The two limiting seats are rotatably connected to two support shafts.

[0009] Preferably, the bottom of the limiting seat is provided with a limiting shaft, and the limiting shaft is located at the center of the spring, with the lower end of the limiting shaft slidably connected to the fixed plate.

[0010] Preferably, the conveying mechanism includes a pressure roller, a rotating roller is provided on the lower side of the pressure roller, a rotating motor is fixedly installed at the input end of the rotating roller, an auxiliary roller is provided on the lower side of the coating die head, an auxiliary motor is fixedly installed at the input end of the auxiliary roller, and a support roller is provided on the side of the auxiliary roller away from the rotating roller.

[0011] Preferably, the front and rear ends of the pressure roller are rotatably connected to the coating frame, the rotating roller is rotatably connected to the coating frame, the auxiliary roller is rotatably connected to the coating frame, and the support roller is rotatably connected to the coating frame.

[0012] Preferably, the drying chamber is equipped with three rotating rollers for supporting the bottom side of the film, and each rotating roller is rotatably connected to the drying chamber.

[0013] Preferably, the winding mechanism includes a winding frame, a winding roller is rotatably connected to the middle position of the winding frame, and a winding motor for driving the winding roller to rotate is fixed on the front side of the winding frame.

[0014] The advantages compared to existing technologies are as follows:

[0015] The film is conveyed to drive the lint roller to roll on top of it, thereby removing any hair that may be adsorbed on the film. At the same time, a vacuum generator and a dust suction pipe are used to generate suction inside the dust suction hood that is fitted outside the lint roller. The dust suction hood can suck up the debris on the top of the film, preventing dust, hair and debris from affecting the quality of the film coating. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a coating machine for lithium battery production according to the present invention;

[0018] Figure 2 This is a side view of a coating machine for lithium battery production according to the present invention;

[0019] Figure 3 yes Figure 2 Sectional view at point AA;

[0020] Figure 4 This is a schematic diagram of the cleaning mechanism of a coating machine for lithium battery production according to the present invention;

[0021] Figure 5 This is a schematic diagram of the drying box structure of a coating machine for lithium battery production according to the present invention;

[0022] Figure 6 This is a schematic diagram of the conveying mechanism structure of a coating machine for lithium battery production according to the present invention;

[0023] Figure 7 This is a schematic diagram of the coating frame structure of a coating machine for lithium battery production as described in this utility model.

[0024] The annotations in the attached figures are explained as follows:

[0025] 1. Coating frame; 2. Drying oven; 3. Cleaning mechanism; 4. Conveying mechanism; 5. Coating die head; 6. Rewinding mechanism; 31. Dust hood; 32. Dust suction pipe; 33. Vacuum generator; 34. Support shaft; 35. Lint roller; 36. Limit seat; 37. Spring; 38. Fixing plate; 41. Pressure roller; 42. Rotating roller; 43. Rotating motor; 44. Auxiliary roller; 45. Auxiliary motor; 46. Support roller; 61. Rewinding roller; 62. Rewinding frame; 63. Rewinding motor. Detailed Implementation

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] like Figures 1-7 As shown, a coating machine for lithium battery production includes a coating frame 1, a coating die head 5 fixed on the upper side inside the coating frame 1, a conveying mechanism 4 provided on the lower side inside the coating frame 1, and multiple drying boxes 2 arranged in a linear array fixed at the film outlet end of the coating frame 1. The drying boxes 2 are equipped with three rotating rollers for supporting the bottom side of the film, and each rotating roller is rotatably connected to the drying box 2. A winding mechanism 6 is provided at the end of the drying box 2 away from the coating frame 1. The machine also includes a cleaning mechanism 3 located on one side of the coating die head 5.

[0029] In this embodiment: the cleaning mechanism 3 includes a dust suction hood 31. The bottom of the dust suction hood 31 has a suction groove for adsorbing dust from the film surface. Inside the dust suction hood 31 is a lint roller 35 for pressing onto the film. Support shafts 34 are fixed to both ends of the lint roller 35. The ends of the two support shafts 34 that are far apart from each other pass through the dust suction hood 31, and each end of the two support shafts 34 extending out of the dust suction hood 31 is provided with a limiting component. Suction pipes 32 are fixed to both ends of the dust suction hood 31. Located on the upper side of the support shaft 34, the dust suction pipe 32 extends out of one end of the coating frame 1 and is fixed with a vacuum generator 33. By sending compressed air into the vacuum generator 33, suction is generated in the dust suction hood 31 through the dust suction pipe 32, and the film to be coated is then dusted. At the same time, a lint roller 35 is provided in the dust suction hood 31. The lint roller 35 rolls on the top of the film to stick and adsorb hair that is attracted by electrostatics, so as to prevent hair and other debris from entering the coating area with the film.

[0030] In this embodiment: the limiting assembly includes two fixed plates 38, which are respectively fixed on the front and rear sides of the coating machine frame 1. Each fixed plate 38 is fixed with a spring 37, and each spring 37 is fixed with a limiting seat 36 at its upper end. The two limiting seats 36 are rotatably connected to two support shafts 34. The bottom of the limiting seat 36 is provided with a limiting shaft, which is located at the center of the spring 37. The lower end of the limiting shaft is slidably connected to the fixed plate 38. The spring 37 pulls the limiting seat 36 towards the fixed plate 38, and the limiting shaft follows the limiting seat 36 through the fixed plate 38, thereby preventing the limiting seat 36 from shifting during downward movement.

[0031] In this embodiment: the conveying mechanism 4 includes a pressure roller 41, a rotating roller 42 is provided on the lower side of the pressure roller 41, a rotating motor 43 is fixedly installed at the input end of the rotating roller 42, an auxiliary roller 44 is provided on the lower side of the coating die head 5, an auxiliary motor 45 is fixedly installed at the input end of the auxiliary roller 44, and a support roller 46 is provided on the side of the auxiliary roller 44 away from the rotating roller 42. The front and rear ends of the pressure roller 41 are rotatably connected to the coating frame 1, the rotating roller 42 is rotatably connected to the coating frame 1, the auxiliary roller 44 is rotatably connected to the coating frame 1, and the support roller 46 is rotatably connected to the coating frame 1. The rotating part of the rotating motor 43 drives the rotating roller 42 to rotate, and at the same time, the pressure roller 41 presses the film to be coated onto the rotating roller 42. As the rotating roller 42 rotates, the film to be coated is conveyed. At the same time, the auxiliary motor 45 drives the auxiliary roller 44 to rotate to assist in the conveying of the coated film. Then, the support roller 46 rolls and supports the coated film, so that the coated film enters multiple drying boxes 2 for drying.

[0032] In this embodiment: the winding mechanism 6 includes a winding frame 62, a winding roller 61 is rotatably connected to the middle position of the winding frame 62, and a winding motor 63 is fixed on the front side of the winding frame 62 for driving the winding roller 61 to rotate. The winding roller 61 is driven to rotate by the rotating part of the winding motor 63, and the winding frame 62 provides rolling support for the winding roller 61.

[0033] Working principle: In use, firstly, one end of the film to be coated is passed between the pressure roller 41 and the rotating roller 42, and one end of the film is placed on the auxiliary roller 44 and the support roller 46. Then, the stretched end of the film is passed through multiple drying boxes 2 and wound onto the take-up roller 61. Subsequently, the mixed coating material is fed into the coating die head 5 by an external feed pump. The coating material is coated onto the film on the upper side of the auxiliary roller 44 by the coating die head 5. Then, the rotating motor 43, the auxiliary motor 45 and the take-up motor 63 are started simultaneously. The rotating part of the rotating motor 43 drives the rotating roller 42 to rotate. At the same time, the pressure roller 41 presses the film to be coated onto the rotating roller 42. As the rotating roller 42 rotates, the film to be coated is conveyed. At the same time, the spring 37 pulls the limit seat 36 to move towards the fixed plate 38, so that the lint roller 35 adheres to the top of the film to be coated, and at the same time, the suction roller 35 is pulled to move towards the fixed plate 38. The dust suction slot on the lower side of the dust hood 31 is close to the top of the film. Compressed air is then introduced into the vacuum generator 33, thereby generating suction in the dust hood 31 through the dust suction pipe 32, and then the film to be coated is suctioned. At the same time, a lint roller 35 is provided in the dust hood 31. The lint roller 35 rolls on the top of the film to stick and adsorb hair attracted by electrostatics, preventing hair and other debris from entering the coating area with the film. In addition, when coating the material on the top of the film, the auxiliary motor 45 drives the auxiliary roller 44 to rotate to assist the transport of the coated film. Then, the support roller 46 rolls and supports the coated film, and then the coated film enters multiple drying chambers 2 for drying. After the coating material on the film is dried, the rotating part of the winding motor 63 drives the winding roller 61 on the winding frame 62 to rotate, thereby winding the coated film around the outside of the winding roller 61.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A coating machine for lithium battery production, comprising a coating frame (1), wherein a coating die (5) is fixedly located on the upper side inside the coating frame (1), a conveying mechanism (4) is provided on the lower side inside the coating frame (1), and a plurality of drying boxes (2) arranged in a linear array are fixedly located at the film exit end of the coating frame (1), wherein a winding mechanism (6) is provided at the end of the plurality of drying boxes (2) away from the coating frame (1), characterized in that: It also includes a cleaning mechanism (3), which is located on one side of the coating die head (5); The cleaning mechanism (3) includes a dust suction hood (31), the bottom of which has a dust suction slot for adsorbing dust on the film surface. Inside the dust suction hood (31) is a lint roller (35) for pressing onto the film. Both ends of the lint roller (35) are fixed with support shafts (34). The ends of the two support shafts (34) that are far apart from each other pass through the dust suction hood (31), and the ends of the two support shafts (34) that extend out of the dust suction hood (31) are provided with limiting components. Both ends of the dust suction hood (31) are fixed with suction pipes (32), which are located on the upper side of the support shafts (34). The end of the suction pipe (32) that extends out of the coating frame (1) is fixed with a vacuum generator (33).

2. The coating machine for lithium battery production according to claim 1, characterized in that: The limiting assembly includes two fixing plates (38), which are fixed on the front and rear sides of the coating frame (1) respectively. Each fixing plate (38) is fixed with a spring (37), and each spring (37) is fixed with a limiting seat (36) at its upper end. The two limiting seats (36) are rotatably connected to two support shafts (34).

3. The coating machine for lithium battery production according to claim 2, characterized in that: The bottom of the limiting seat (36) is provided with a limiting shaft, and the limiting shaft is located at the center of the spring (37). The lower end of the limiting shaft is slidably connected to the fixing plate (38).

4. The coating machine for lithium battery production according to claim 1, characterized in that: The conveying mechanism (4) includes a pressure roller (41), a rotating roller (42) is provided on the lower side of the pressure roller (41), a rotating motor (43) is fixedly provided at the input end of the rotating roller (42), an auxiliary roller (44) is provided on the lower side of the coating die head (5), an auxiliary motor (45) is fixedly provided at the input end of the auxiliary roller (44), and a support roller (46) is provided on the side of the auxiliary roller (44) away from the rotating roller (42).

5. The coating machine for lithium battery production according to claim 4, characterized in that: The front and rear ends of the pressure roller (41) are rotatably connected to the coating frame (1), the rotating roller (42) is rotatably connected to the coating frame (1), the auxiliary roller (44) is rotatably connected to the coating frame (1), and the support roller (46) is rotatably connected to the coating frame (1).

6. The coating machine for lithium battery production according to claim 1, characterized in that: The drying chamber (2) is equipped with three rotating rollers for supporting the bottom side of the film, and each rotating roller is rotatably connected to the drying chamber (2).

7. The coating machine for lithium battery production according to claim 1, characterized in that: The winding mechanism (6) includes a winding frame (62), a winding roller (61) is rotatably connected to the middle position of the winding frame (62), and a winding motor (63) for driving the winding roller (61) to rotate is fixed on the front side of the winding frame (62).

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