Lithium battery production coating machine

Abstract

The utility model discloses a coating machine for lithium battery production, which belongs to the technical field of lithium battery production, and comprises a coating box and a drying box communicated with the coating box, the bottoms of the coating box and the drying box are fixedly connected with support leg frames, and the far sides of the coating box and the drying box are respectively provided with a material passing port. A coating mechanism is arranged in the coating box, a distance adjusting mechanism is arranged on one side of the coating box, the two ends of the distance adjusting mechanism are fixedly connected with the two ends of the coating mechanism respectively, a drying mechanism is arranged in the drying box, and the distance adjusting mechanism comprises a housing strip communicated with the front side wall of the coating box. And a hand wheel rod is inserted and rotationally connected to the upper end of the housing strip. According to the lithium battery film spraying device, the distance between the two spraying pipes can be adjusted by arranging the distance adjusting mechanism, and then the distance between the spraying pipes and the lithium battery film is adjusted, so that the optimal spraying distance is adjusted, and the spraying processing quality is improved.

Description

Technical Field

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

[0002] With the development of science and technology, lithium batteries have become mainstream, and the preparation of lithium batteries has received more and more attention. The electrode slurry coating technology and equipment of lithium batteries is one of the key technologies in the development and production of lithium-ion batteries. The electrode material of lithium batteries is mainly a composite material. The electrode slurry is a mixture made by adding conductive agents, binders and other additives to the electrode material. It usually needs to be fully mixed by high-shear mixing equipment to ensure the uniform distribution of the components in the slurry. The electrode coating is mainly carried out by a roll coater. By controlling parameters such as the roll speed and coating thickness, the electrode slurry is evenly coated on materials such as aluminum foil or copper foil to form a uniform positive electrode film. After the coating is completed, a drying process is required to completely evaporate the solvent in the positive electrode film to ensure the solidification and stability of the positive electrode film.

[0003] In a lithium battery production coating machine patented in China (patent number: CN219880352U), the device includes a bracket, the top surface of the bracket is fixedly connected to a shell, a coating device is arranged at the rear of the shell, and the coating device includes a coating part; the coating part includes a water pump, a material box and a U-shaped pipe, the front of the water pump and the front of the material box are fixedly connected to the back of the shell, by setting an installation box, a heating rod and a fan assembly, the fan assembly is used to dry the coated coating, and by starting the heating rod, the drying temperature is increased to speed up the drying speed of the coating; by setting a reflux pipe, a filter box, a connection Tube, filter, activated carbon and glue drying particles, so that the higher temperature wind passes through the return pipe, activated carbon and glue drying particles in turn, and finally flows into the installation box along the inner wall of the connecting pipe, the hot air inside the shell is collected and recycled, reducing the waste of resources, and at the same time, the glue drying particles and activated carbon are used to absorb moisture and harmful gases in the hot air respectively. However, in this device, due to the use of U-tube, the distance between the nozzles on both sides cannot be adjusted, resulting in the inability to adjust the distance between the nozzle and the lithium battery film strip according to the processing requirements, thereby affecting the spraying processing quality of the lithium battery film strip. Utility Model Content

[0004] The purpose of the utility model is to provide a coating machine for lithium battery production to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coating machine for lithium battery production, comprising a coating box and a drying box connected to the coating box, the bottoms of the coating box and the drying box are fixedly connected with a leg frame, the sides of the coating box and the drying box far from each other are provided with a material through hole, the coating box is provided with a coating mechanism, one side of the coating box is provided with a spacing adjustment mechanism, the two ends of the spacing adjustment mechanism are respectively fixedly connected with the two ends of the coating mechanism, and the drying box is provided with a drying mechanism;

[0006] The spacing adjustment mechanism includes a cover bar connected to the front side wall of the paint box, a handwheel rod is inserted and rotatably connected to the upper end of the cover bar, one end of the handwheel rod passes through the cover bar and is fixedly connected to a bidirectional screw rod, two symmetrically arranged nut blocks are threadedly connected to the bidirectional screw rod, and the same side of the two nut blocks are fixedly connected to a connecting rod, and one end of the two connecting rods extends into the paint box and is respectively fixedly connected to the two ends of the paint mechanism.

[0007] As a further solution of the utility model: wherein, the paint mechanism includes a paint tank fixed on the rear side wall of the paint box, the bottom of the paint tank is connected to a paint pump, one end of the paint pump is connected to a tee, both ends of the tee pass through the paint box and are connected to two hoses, one end of the two hoses is connected to two symmetrically arranged spray pipes, and the two ends of the spacing adjustment mechanism are respectively fixedly connected to one end of the two spray pipes.

[0008] As a further solution of the utility model: wherein, the drying mechanism includes two hot air blowers symmetrically arranged at the upper and lower ends of the drying box, the air outlet ends of the hot air blowers are connected to the drying box, the front and rear sides of the drying box are connected to gas filters, and two ducts are connected to both sides of the two gas filters, and the four ducts are respectively connected to the air inlet ends of the two hot air blowers.

[0009] As a further solution of the utility model: wherein, the side wall of the paint box is provided with a sliding opening connected to the cover strip, and the inner wall of the sliding opening is slidably connected to the side wall of the connecting rod.

[0010] As a further solution of the utility model: wherein, the inner bottom wall of the cover shell strip is rotatably connected to the lower end of the bidirectional screw rod through a bearing seat.

[0011] As a further solution of the utility model: wherein, a control switch is fixedly connected to one side of the paint box, and the control switch is electrically connected to one end of the paint mechanism and the drying mechanism respectively.

[0012] As a further solution of the utility model: wherein, the inner walls of the coating box and the drying box on one side close to the material passage are both rotatably connected with support rollers.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The lithium battery production coating machine is equipped with a spacing adjustment mechanism. By rotating the handwheel rod, the bidirectional screw is driven to rotate. At this time, the two nut blocks are forced to move in opposite directions to adjust the spacing between the two spray tubes, and then adjust the spacing between the spray tube and the lithium battery film, so as to adjust the optimal spray spacing and improve the spray processing quality.

[0015] 2. The lithium battery production coating machine can dry the lithium battery film on both sides by setting up a drying mechanism and starting two hot air blowers to work at the same time. The drying effect is good. The air flow is filtered by two gas filters and then introduced into the two hot air blowers by four ducts respectively. The cycle heating and drying is energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the left side cross-sectional structure of the coating box in the utility model;

[0018] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0019] Figure 4 It is a left side cross-sectional structural schematic diagram of the drying box in the utility model.

[0020] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0021] 1. Paint box; 2. Drying box; 3. Leg rack; 4. Feed port; 5. Paint tank; 6. Paint pump; 7. Tee pipe; 8. Hose; 9. Spray pipe; 10. Cover strip; 11. Handwheel rod; 12. Bidirectional screw rod; 13. Nut block; 14. Connecting rod; 15. Hot air blower; 16. Gas filter; 17. Conduit; 18. Slide; 19. Control switch; 20. Support roller. DETAILED DESCRIPTION

[0022] See also Figures 1 to 4In the practical embodiment, a lithium battery production coating machine is used for spraying raw material films for lithium battery production, including a coating box 1 and a drying box 2 connected to the coating box 1. The side walls of the coating box 1 and the drying box 2 are provided with door panels to facilitate internal inspection or film arrangement. The bottoms of the coating box 1 and the drying box 2 are fixedly connected with support legs 3, and the sides of the coating box 1 and the drying box 2 are far from each other. A material passage 4 is provided in the coating box 1, and a coating mechanism is provided in one side of the coating box 1. A spacing adjustment mechanism is provided, and the two ends of the spacing adjustment mechanism are respectively fixedly connected to the two ends of the coating mechanism, and a drying mechanism is provided in the drying box 2.

[0023] The spacing adjustment mechanism includes a cover bar 10 connected to the front side wall of the paint box 1, and a handwheel rod 11 is inserted and rotatably connected to the upper end of the cover bar 10. One end of the handwheel rod 11 penetrates the cover bar 10 and is fixedly connected to a bidirectional screw rod 12. Two symmetrically arranged nut blocks 13 are threadedly connected to the bidirectional screw rod 12. The same side of the two nut blocks 13 are fixedly connected to a connecting rod 14. One end of the two connecting rods 14 extends into the paint box 1 and is fixedly connected to the two ends of the paint mechanism. The handwheel rod 11 is rotated to drive the bidirectional screw rod 12 to rotate. Since the bidirectional screw rod 12 is threadedly connected to the two nut blocks 13 respectively, at this time, the two nut blocks 13 are forced to move in opposite directions to achieve the spacing adjustment of the two spray tubes 9, and then adjust the spacing between the spray tube 9 and the lithium battery film, so as to adjust the optimal spraying spacing and improve the spraying processing quality.

[0024] like Figure 2 As shown: the coating mechanism includes a coating tank 5 fixed on the rear side wall of the coating box 1, the bottom of the coating tank 5 is connected with a coating pump 6, one end of the coating pump 6 is connected with a tee pipe 7, both ends of the tee pipe 7 penetrate into the coating box 1 and are connected with two hoses 8, one end of the two hoses 8 is connected with two symmetrically arranged spray pipes 9, and the two ends of the spacing adjustment mechanism are respectively fixedly connected with one end of the two spray pipes 9. Start the coating pump 6 to work, guide the coating in the coating tank 5 into the tee pipe 7, and then guide the coating into the two spray pipes 9 by the two hoses 8 for spraying, so that the lithium battery film can be sprayed on both sides, and the spraying effect is fast.

[0025] like Figure 4 As shown: the drying mechanism includes two hot air blowers 15 symmetrically arranged at the upper and lower ends of the drying box 2, the air outlet of the hot air blower 15 is connected to the drying box 2, the front and rear sides of the drying box 2 are connected to gas filters 16, the two sides of the two gas filters 16 are connected to two ducts 17, and the four ducts 17 are respectively connected to the air inlet ends of the two hot air blowers 15. When the two hot air blowers 15 are started to work simultaneously, the lithium battery film can be dried on both sides with good drying effect. The air flow is filtered by the two gas filters 16 and then introduced into the two hot air blowers 15 by the four ducts 17, and the circulation heating and drying are energy-saving and environmentally friendly.

[0026] like Figure 3 As shown, the side wall of the paint box 1 is provided with a sliding opening 18 connected to the cover strip 10, and the inner wall of the sliding opening 18 is slidably connected to the side wall of the connecting rod 14, so that the connecting rod 14 maintains a straight up and down displacement.

[0027] like Figure 3 As shown: the inner bottom wall of the cover strip 10 is rotatably connected to the lower end of the bidirectional screw rod 12 through a bearing seat, so that the rotation of the bidirectional screw rod 12 is more stable.

[0028] like Figure 1 As shown: a control switch 19 is fixedly connected to one side of the paint box 1, and the control switch 19 is electrically connected to one end of the paint mechanism and the drying mechanism respectively, which is easy to operate and has an external power supply. The circuit involved is the existing technology and can be fully implemented by those skilled in the art without further explanation.

[0029] like Figure 1 and Figure 4 As shown: the inner walls of the coating box 1 and the drying box 2 near the material passage 4 are both rotatably connected with support rollers 20, which can support the lithium battery film during transportation.

[0030] Working principle: When the device is used to spray the lithium battery film, the paint pump 6 is started to work, the paint in the paint tank 5 is introduced into the three-way pipe 7, and then introduced into the two spray pipes 9 by two hoses 8 for spraying, so that the lithium battery film can be sprayed on both sides, and the spraying effect is fast. Secondly, the two hot air blowers 15 are started to work at the same time, and the lithium battery film can be dried on both sides, and the drying effect is good. The air flow is filtered by two gas filters 16, and then introduced into the two hot air blowers 15 by four conduits 17, respectively, for cyclic heating and drying, which is energy-saving and environmentally friendly.

[0031] Secondly, turn the handwheel rod 11 to drive the bidirectional screw rod 12 to rotate. Since the bidirectional screw rod 12 is threadedly connected to the two nut blocks 13 respectively, the two nut blocks 13 are forced to move in opposite directions at this time, so as to adjust the spacing between the two spray tubes 9, and then adjust the spacing between the spray tube 9 and the lithium battery film, so as to adjust the optimal spraying spacing and improve the spraying processing quality.

[0032] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coating machine for producing lithium batteries, comprising a coating box (1) and a drying box (2) connected to the coating box (1), characterized in that: The bottoms of the coating box (1) and the drying box (2) are both fixedly connected with a leg frame (3); the sides of the coating box (1) and the drying box (2) that are far from each other are both provided with a material passage (4); a coating mechanism is provided in the coating box (1); a spacing adjustment mechanism is provided on one side of the coating box (1); two ends of the spacing adjustment mechanism are respectively fixedly connected to two ends of the coating mechanism; and a drying mechanism is provided in the drying box (2); The spacing adjustment mechanism comprises a cover bar (10) connected to the front side wall of the paint box (1), a handwheel rod (11) is inserted into and rotatably connected to the upper end of the cover bar (10), one end of the handwheel rod (11) passes through the cover bar (10) and is fixedly connected to a bidirectional screw rod (12), two symmetrically arranged nut blocks (13) are threadedly connected to the bidirectional screw rod (12), the same side of the two nut blocks (13) are fixedly connected to a connecting rod (14), one end of the two connecting rods (14) extends into the paint box (1) and is respectively fixedly connected to the two ends of the paint mechanism.

2. A lithium battery production coating machine according to claim 1, characterized in that: The coating mechanism comprises a coating tank (5) fixed on the rear side wall of the coating box (1); the bottom of the coating tank (5) is connected to a coating pump (6); one end of the coating pump (6) is connected to a three-way pipe (7); both ends of the three-way pipe (7) penetrate into the coating box (1) and are connected to two hoses (8); one end of the two hoses (8) is connected to two symmetrically arranged spray pipes (9); and the two ends of the spacing adjustment mechanism are respectively fixedly connected to one end of the two spray pipes (9).

3. A lithium battery production coating machine according to claim 1, characterized in that: The drying mechanism comprises two hot air blowers (15) symmetrically arranged at the upper and lower ends of the drying box (2); the air outlet ends of the hot air blowers (15) are connected to the drying box (2); the front and rear sides of the drying box (2) are connected to gas filters (16); the two sides of the two gas filters (16) are connected to two ducts (17); the four ducts (17) are respectively connected to the air inlet ends of the two hot air blowers (15).

4. A lithium battery production coating machine according to claim 1, characterized in that: The side wall of the paint box (1) is provided with a sliding opening (18) which is connected to the cover strip (10), and the inner wall of the sliding opening (18) is slidably connected to the side wall of the connecting rod (14).

5. A lithium battery production coating machine according to claim 1, characterized in that: The inner bottom wall of the cover strip (10) is rotatably connected to the lower end of the bidirectional screw rod (12) via a bearing seat.

6. A lithium battery production coating machine according to claim 1, characterized in that: A control switch (19) is fixedly connected to one side of the paint box (1), and the control switch (19) is electrically connected to one end of the paint mechanism and the drying mechanism respectively.

7. A lithium battery production coating machine according to claim 1, characterized in that: The inner walls of the coating box (1) and the drying box (2) on one side close to the material passage opening (4) are both rotatably connected with a supporting roller (20).

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