A new type of lithium battery coating machine

Abstract

The invention discloses a novel lithium battery coating machine, which relates to the technical field of lithium battery processing. The technical solution includes a workbench, a coating guide roller is arranged on the upper part of the workbench, a coating head is arranged at the rear end of the coating guide roller, the coating head includes an upper mold, a gasket and a lower mold, the lower part of the upper mold is fixedly connected with the gasket, the lower part of the gasket is fixedly connected with the lower mold, and a separation mechanism is arranged inside the upper mold. In the invention, when the coating material is coated by the coating head, it is only necessary to transport the coating sauce to the flow balancing groove through the feed inlet, and then spray it through the gap between the upper mold and the lower mold, so as to coat the coating material with a single coating strip. If double-strip coating is desired to improve efficiency, there is no need to manually replace the coating head. It is only necessary to control the cylinder to drive the first movable baffle to move to both sides to open the bottom of the upper mold, and then drive the partition plate to move to both sides through the partition mechanism, and drive the partition plate to be pressed down through the pressing mechanism, so as to separate the single coating strip.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery processing, and in particular to a novel lithium battery coating machine. Background Art

[0002] Lithium battery coating machine is a key equipment in the manufacturing process of lithium-ion batteries. Its background is closely linked to the rapid development of the new energy industry. With the increase in global demand for green and low-carbon energy, lithium-ion batteries, as important energy storage devices, have a rising market demand. Lithium battery coating machines play a vital role in this context. They are responsible for evenly coating the electrode slurry on the current collector to form the positive and negative electrodes of the battery, which directly affects the core indicators of lithium-ion batteries such as energy density, charge and discharge performance, cycle life and safety. In recent years, with the rapid expansion of the lithium battery industry, the market size of lithium battery coating machines has continued to expand, and the degree of localization has continued to increase, providing strong support for the independent control and supply chain security of the new energy industry.

[0003] After searching, the invention patent of Chinese patent number CN116078616A discloses a coating mechanism of a novel lithium battery coating machine, including a base frame, a feeding roller is rotatably installed on the top of one side of the base frame, and a lithium battery coating base material is detachably installed on the outer side of the feeding roller. The present invention, by setting a coating component, cooperates with the use of a first guiding roller, a second guiding roller and two third guiding rollers to stably guide the lithium battery coating base material, improve the stability of the lithium battery coating base material during subsequent coating, and recycle the excess coating material for secondary utilization, prevent the waste of coating material, and prevent excessive coating of coating material, thereby improving the coating quality of the coating material, and cooperates with a scraper bar to scrape and spread the coating material on the upper surface of the lithium battery coating base material, further improving the coating quality of the coating material, and the lithium battery coating base material is not coated for a short time, leaving a gap on the lithium battery coating base material for subsequent lithium battery processing. Compared with the prior art, the invention patent with Chinese patent number CN116078616A solves the problem that the existing coating machine adopts continuous coating and then performs fixed-length slitting to produce pole pieces, and it is necessary to scrape off the slurry coating at one end of each section when assembling the battery to expose the metal foil; the process route of continuous coating and fixed-length slitting is inefficient and cannot meet the needs of final large-scale production.

[0004] However, in actual use of the above-mentioned device, most of the coating devices are slit-type coating dies with only a single outlet, so only a single coating can be applied, which greatly limits the coating efficiency of the production line. Moreover, the outlet of the coating head is mostly fixed and the width is not adjustable, which can only meet the coating requirements of a single width. The application scope is limited and lacks flexibility. Multiple slit-type coating dies of different specifications must be configured, and replacement is time-consuming and labor-intensive. Therefore, a new lithium battery coating machine is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that most coating devices are slit-type coating dies with only a single outlet, so only a single coating can be coated, which greatly limits the coating efficiency of the production line. Moreover, the outlet of the coating head is mostly fixed and the width is not adjustable, which can only meet the coating requirements of a single width. The application scope is limited and there is a lack of flexibility. A plurality of slit-type coating dies of different specifications must be configured, and the replacement is time-consuming and labor-intensive. A new type of lithium battery coating machine is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A novel lithium battery coating machine comprises a workbench, a coating guide roller is arranged at the upper part of the workbench, a coating head is arranged at the rear end of the coating guide roller, the coating head comprises an upper die, a gasket and a lower die, a gasket is fixedly connected to the lower part of the upper die, a lower die is fixedly connected to the lower part of the gasket, a partition mechanism is arranged inside the upper die, two partition plates are arranged at the lower part of the partition mechanism, and the partition plates can be driven to move to both sides by the partition mechanism;

[0008] A pressing mechanism is arranged at the upper part of the partition plate, and the pressing mechanism can drive the partition plate to move downward. A coating material is arranged at the upper part of the workbench, and a guide roller is arranged at the front end of the workbench. A cleaning mechanism is fixedly connected to the front end of the guide roller, and a plurality of guide rollers are arranged at the front end of the cleaning mechanism. The cleaning mechanism can drive the cleaning roller arranged at the lower part to contact with the coating material to clean the dust on the surface of the coating material.

[0009] The above technical solution further includes:

[0010] A flow balancing groove is provided on the upper part of the lower die, and three feed ports are fixedly connected to the rear end of the flow balancing groove, and the feed ports are communicated with the flow balancing groove.

[0011] An electric telescopic rod is symmetrically arranged inside the upper mold close to the rear wall, and a second baffle is fixedly connected to the bottom of the electric telescopic rod, and the second baffle is tightly fitted to the rear wall of the upper mold.

[0012] Cylinders are symmetrically arranged on both sides of the upper mold, a first movable baffle is fixedly connected to the lower part of the cylinder, and the first movable baffle is slidably connected to the upper mold.

[0013] The separating mechanism includes an adjusting shell fixedly connected to the inside of the upper mold, a third motor is arranged on one side of the adjusting shell, a third gear is arranged on the output end of the third motor, the third gear is meshingly connected with a fourth gear, a bidirectional screw is fixedly passed through the middle of the fourth gear, the bidirectional screw is rotationally connected to the adjusting shell, and transmission rods are threadedly connected on both sides of the bidirectional screw.

[0014] The bottom of the regulating shell is fixedly connected to a limit rod, both sides of the limit rod are slidably connected to transmission rods, a pressing mechanism is arranged at the bottom of the transmission rod, and a partition plate is fixedly connected to the bottom of the pressing mechanism.

[0015] The pressing mechanism comprises a pressing shell fixedly connected to the bottom of the transmission rod, a second motor is arranged inside the pressing shell, and a pressing assembly is arranged at the output end of the second motor.

[0016] The pressing assembly includes a first gear arranged at the output end of the second motor, the first gear is meshedly connected with a second gear, the second gear is rotationally connected to the pressing shell, the second gear is threadedly connected with a threaded rod, and the bottom of the threaded rod is rotationally connected with a partition plate.

[0017] The cleaning mechanism includes a transmission housing symmetrically fixedly connected to the front end of the guide roller, a first motor is arranged at the lower part of the transmission housing, a worm is arranged at the output end of the first motor, the worm is rotationally connected to the transmission housing, a transmission member is threadedly connected to the worm, and the transmission member is slidingly connected to the transmission housing.

[0018] The transmission member is rotatably connected to a cleaning roller on one side away from the transmission housing, and the surface of the cleaning roller is a soft sponge.

[0019] The present invention has the following beneficial effects:

[0020] 1. In the present invention, when the coating material is coated by the coating head, it is only necessary to transport the coating sauce through the feed port to the equalizing trough, and then spray it out through the gap between the upper mold and the lower mold to apply a single coating to the coating material. If double-strip coating is desired to improve efficiency, there is no need to manually replace the coating head. It is only necessary to control the cylinder to drive the first movable baffle to move to both sides to open the bottom of the upper mold, and then drive the partition plate to move to both sides through the partition mechanism, and drive the partition plate downward through the pressing mechanism to separate the single coating. The separation mechanism adopts a ball screw movement mode, that is, the cooperation of the bidirectional screw and the transmission rod, which is flexible to adjust and has high precision, and can more accurately control the distance between the two partition plates, thereby ensuring that the width of the coating soil layer after separation will not deviate. The coating strip width is adjusted by switching the number of coating strips through a mechanical mechanism, which effectively reduces the frequency of workers replacing the coating head.

[0021] 2. In the present invention, before the coating material is transmitted to the coating head, the cleaning roller can be driven by the cleaning mechanism to move, so as to contact the surface of the coating material. The cleaning roller is driven to rotate by the transmission of the coating material, and the rotating cleaning roller can remove the dust on the surface of the coating material, thereby effectively ensuring that the surface of the coating material is smooth and clean during coating, and improving the coating quality of the coating head. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a new type of lithium battery coating machine proposed by the present invention;

[0023] Figure 2 It is a schematic diagram of the connection relationship of the cleaning mechanism in the present invention;

[0024] Figure 3 It is a schematic diagram of the cleaning mechanism structure in the present invention;

[0025] Figure 4 It is a schematic diagram of the internal structure of the transmission housing in the present invention;

[0026] Figure 5 It is a schematic diagram of the overall structure of the coating mechanism in the present invention;

[0027] Figure 6 It is a schematic diagram of the explosion structure of the coating head in the present invention;

[0028] Figure 7 It is a schematic diagram of the internal structure of the upper mold in the present invention;

[0029] Figure 8 It is a schematic diagram of the internal structure of the lifting and pressing shell in the present invention;

[0030] Fig. 9 It is a schematic diagram of the internal structure of the regulating shell in the present invention.

[0031] In the figure: 1. workbench; 2. coating material; 3. guide roller; 4. guide roller; 5. transmission housing; 6. cleaning roller; 7. upper mold; 8. coating guide roller; 9. first motor; 10. worm; 11. transmission member; 12. gasket; 13. lower mold; 14. flow trough; 15. inlet; 16. cylinder; 17. first movable baffle; 18. electric telescopic rod; 19. second baffle; 20. adjustment housing; 21. partition plate; 22. pressing housing; 23. second motor; 24. first gear; 25. second gear; 26. threaded rod; 27. third motor; 28. third gear; 29. ​​fourth gear; 30. bidirectional screw; 31. limit rod; 32. transmission rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] like Figure 1-Figure 9As shown, a novel lithium battery coating machine proposed by the present invention comprises a workbench 1, a coating guide roller 8 is arranged on the upper part of the workbench 1, a coating head is arranged at the rear end of the coating guide roller 8, the coating head comprises an upper die 7, a gasket 12 and a lower die 13, the lower part of the upper die 7 is fixedly connected to the gasket 12, the lower part of the gasket 12 is fixedly connected to the lower die 13, a partition mechanism is arranged inside the upper die 7, and two partition plates 21 are arranged at the lower part of the partition mechanism, and the partition plates 21 can be driven to move to both sides by the partition mechanism;

[0035] A pressing mechanism is arranged on the upper part of the partition plate 21, and the pressing mechanism can drive the partition plate 21 to move downward. A coating material 2 is arranged on the upper part of the workbench 1, and a guide roller 3 is arranged at the front end of the coating material 2. A cleaning mechanism is fixedly connected to the front end of the guide roller 3, and a plurality of guide rollers 4 are arranged at the front end of the cleaning mechanism. The cleaning mechanism can drive the cleaning roller 6 arranged at the lower part to contact with the coating material 2 to clean the dust on the surface of the coating material 2;

[0036] An equalizing groove 14 is provided on the upper part of the lower mold 13, and three feed ports 15 are fixedly connected to the rear end of the equalizing groove 14, and the feed ports 15 are communicated with the equalizing groove 14. An electric telescopic rod 18 is symmetrically arranged inside the upper mold 7 close to the rear wall, and a second baffle 19 is fixedly connected to the bottom of the electric telescopic rod 18, and the second baffle 19 is closely attached to the rear wall of the upper mold 7. Cylinders 16 are symmetrically arranged on both sides of the upper mold 7, and a first movable baffle 17 is fixedly connected to the lower part of the cylinder 16, and the first movable baffle 17 is slidably connected to the upper mold 7;

[0037] The partition mechanism includes an adjustment housing 20 fixedly connected to the interior of the upper mold 7, a third motor 27 is provided on one side of the adjustment housing 20, a third gear 28 is provided on the output end of the third motor 27, the third gear 28 is meshingly connected with a fourth gear 29, a bidirectional screw 30 is fixedly passed through the middle of the fourth gear 29, the bidirectional screw 30 is rotationally connected to the adjustment housing 20, a transmission rod 32 is threadedly connected on both sides of the bidirectional screw 30, a limit rod 31 is fixedly connected to the bottom of the adjustment housing 20, and a transmission rod 32 is slidably connected on both sides of the limit rod 31, a pressing mechanism is provided at the bottom of the transmission rod 32, and a partition plate 21 is fixedly connected to the bottom of the pressing mechanism;

[0038] The pressing mechanism includes a pressing shell 22 fixedly connected to the bottom of the transmission rod 32, a second motor 23 is arranged inside the pressing shell 22, a pressing assembly is arranged at the output end of the second motor 23, the pressing assembly includes a first gear 24 arranged at the output end of the second motor 23, the first gear 24 is meshingly connected with the second gear 25, the second gear 25 is rotatably connected to the pressing shell 22, the second gear 25 is threadedly connected with a threaded rod 26, and the bottom of the threaded rod 26 is rotatably connected with a partition plate 21.

[0039] In this embodiment, after the coating material 2 passes through the guide roller 3, it passes through the coating guide roller 8 under the guidance of the guide roller 4. In the process of passing through the coating guide roller 8, the coating sauce will be transported to the flow balancing groove 14 through the feeding port 15, and the sauce will be sprayed out through the gap between the upper mold 7 and the lower mold 13, so that a single coating can be applied to the upper surface of the coating material 2. If it is desired to apply a double coating to the coating material 2 to improve efficiency, there is no need for workers to manually replace the coating head. First, the two cylinders 16 inside the upper mold 7 drive the first movable baffle 17 to move to both sides through the cylinder 16 to open the bottom of the upper mold 7, and then Then, the electric telescopic rod 18 is started, and the second baffle 19 is pressed down to contact the upper part of the lower mold 13 through the electric telescopic rod 18, and then the third motor 27 on one side of the adjustment housing 20 is started, and the third gear 28 is driven to rotate by the third motor 27. The rotation of the third gear 28 can drive the fourth gear 29 engaged in the rotation, and the rotation of the fourth gear 29 can drive the bidirectional screw 30 fixedly connected in the middle to rotate. The rotation of the bidirectional screw 30 can drive the threaded transmission rod 32 to move to both sides, and the limit rod 31 can ensure the stability of the transmission rod 32 when it moves during the movement of the transmission rod 32;

[0040] After the transmission rod 32 completes the movement, the second motor 23 is started, and the first gear 24 is driven to rotate by the second motor 23. The rotation of the first gear 24 can drive the meshing second gear 25 to rotate, and the rotation of the second gear 25 can drive the threaded rod 26 connected in threaded connection to move downward, thereby driving the partition plate 21 to be pressed down, and thus a single coating strip can be separated. Finally, it is only necessary to control the cylinder 16 to drive the first movable baffle 17 to move inward so that it contacts one side of the partition plate 21 to complete the separation. The separation is completed by the movement of the ball screw inside the separation mechanism, that is, the cooperation of the bidirectional screw 30 and the transmission rod 32, which is flexible and has high precision, and can more accurately control the distance between the two partition plates 21, thereby ensuring that the width of the coated soil layer after separation will not deviate. The number of coating strips is switched by a mechanical mechanism to adjust the coating strip width, which effectively reduces the frequency of workers replacing the coating head.

[0041] Embodiment 2

[0042] like Figure 1-Figure 9 As shown, the cleaning mechanism includes a transmission housing 5 symmetrically fixedly connected to the front end of the guide roller 3, a first motor 9 is arranged at the lower part of the transmission housing 5, a worm 10 is arranged at the output end of the first motor 9, the worm 10 is rotatably connected to the transmission housing 5, the worm 10 is threadedly connected to a transmission member 11, and the transmission member 11 is slidably connected to the transmission housing 5;

[0043] The transmission member 11 is rotatably connected to a cleaning roller 6 at a side away from the transmission housing 5 , and the surface of the cleaning roller 6 is a soft sponge.

[0044] In this embodiment, before the coating material 2 is transmitted to the coating head, the first motor 9 arranged at the bottom of the transmission housing 5 can be started to drive the worm 10 to rotate. The rotation of the worm 10 can drive the threaded transmission member 11 to move, and the movement of the transmission member 11 can drive the rotatably connected cleaning roller 6 to move, so that the cleaning roller 6 can be brought into contact with the upper surface of the coating material 2. The cleaning roller 6 is driven to rotate by the transmission of the coating material 2, and the rotating cleaning roller 6 can remove the dust on the surface of the coating material 2, thereby effectively ensuring that the surface of the coating material 2 is smooth and clean during coating, thereby improving the coating quality of the coating head.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel lithium battery coating machine, comprising a workbench (1), characterized in that: A coating guide roller (8) is arranged on the upper part of the workbench (1), a coating head is arranged at the rear end of the coating guide roller (8), the coating head comprises an upper die (7), a gasket (12) and a lower die (13), the lower part of the upper die (7) is fixedly connected to the gasket (12), the lower part of the gasket (12) is fixedly connected to the lower die (13), a partition mechanism is arranged inside the upper die (7), two partition plates (21) are arranged at the lower part of the partition mechanism, and the partition plates (21) can be driven to move to both sides by the partition mechanism; A pressing mechanism is arranged on the upper part of the partition plate (21), and the pressing mechanism can drive the partition plate (21) to move downward. A coating material (2) is arranged on the upper part of the workbench (1). A guide roller (3) is arranged at the front end of the workbench (1). A cleaning mechanism is fixedly connected to the front end of the guide roller (3). A plurality of guide rollers (4) are arranged at the front end of the cleaning mechanism. The cleaning mechanism can drive a cleaning roller (6) arranged at the lower part to contact the coating material (2) to clean dust on the surface of the coating material (2).

2. A new type of lithium battery coating machine according to claim 1, characterized in that: The upper part of the lower mold (13) is provided with a flow balancing groove (14), and the rear end of the flow balancing groove (14) is fixedly connected with three material inlets (15), and the material inlets (15) are communicated with the flow balancing groove (14).

3. A new type of lithium battery coating machine according to claim 1, characterized in that: An electric telescopic rod (18) is symmetrically arranged inside the upper mold (7) in close contact with the rear wall, and a second baffle (19) is fixedly connected to the bottom of the electric telescopic rod (18), and the second baffle (19) is tightly fitted to the rear wall of the upper mold (7).

4. A new type of lithium battery coating machine according to claim 1, characterized in that: Cylinders (16) are symmetrically arranged on both sides of the upper mold (7), and a first movable baffle (17) is fixedly connected to the lower part of the cylinder (16), and the first movable baffle (17) is slidably connected to the upper mold (7).

5. A novel lithium battery coating machine according to claim 1, characterized in that: The separation mechanism comprises an adjusting housing (20) fixedly connected to the interior of the upper mold (7); a third motor (27) is arranged on one side of the adjusting housing (20); a third gear (28) is arranged at the output end of the third motor (27); the third gear (28) is meshingly connected with another fourth gear (29); a bidirectional screw (30) is fixedly passed through the middle of the other fourth gear (29); the bidirectional screw (30) is rotationally connected to the adjusting housing (20); and transmission rods (32) are threadedly connected to both sides of the bidirectional screw (30).

6. A novel lithium battery coating machine according to claim 5, characterized in that: The bottom of the regulating housing (20) is fixedly connected to a limit rod (31), both sides of the limit rod (31) are slidably connected to transmission rods (32), a pressing mechanism is provided at the bottom of the transmission rod (32), and the bottom of the pressing mechanism is fixedly connected to a partition plate (21).

7. A novel lithium battery coating machine according to claim 1, characterized in that: The pressing mechanism comprises a pressing shell (22) fixedly connected to the bottom of the transmission rod (32), a second motor (23) is arranged inside the pressing shell (22), and a pressing assembly is arranged at the output end of the second motor (23).

8. A novel lithium battery coating machine according to claim 7, characterized in that: The pressing assembly comprises a first gear (24) arranged at the output end of a second motor (23); the first gear (24) is meshingly connected with a second gear (25); the second gear (25) is rotationally connected to a pressing shell (22); the second gear (25) is threadedly connected with a threaded rod (26); and the bottom of the threaded rod (26) is rotationally connected with a partition plate (21).

9. A novel lithium battery coating machine according to claim 1, characterized in that: The cleaning mechanism comprises a transmission housing (5) symmetrically fixedly connected to the front end of the guide roller (3); a first motor (9) is arranged at the lower part of the transmission housing (5); a worm (10) is arranged at the output end of the first motor (9); the worm (10) is rotationally connected to the transmission housing (5); the worm (10) is threadedly connected to a transmission member (11); and the transmission member (11) is slidingly connected to the transmission housing (5).

10. A novel lithium battery coating machine according to claim 9, characterized in that: The transmission member (11) is rotatably connected to a cleaning roller (6) at a side away from the transmission housing (5); the surface of the cleaning roller (6) is a soft sponge.

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