Coating machine for lithium battery production

Abstract

The utility model provides a coating machine for lithium battery production, which comprises a bottom plate, a support frame, a U-shaped frame and a pair of vertical plates are sequentially arranged at the top of the bottom plate, and conveying components for conveying electrode plates are arranged in the support frame, the U-shaped frame and the pair of vertical plates. The U-shaped frame is provided with a material spraying assembly used for coating the electrode plates conveyed by the conveying assembly. A pair of guide plates is arranged between the pair of vertical plates, electric push rods are arranged on the side walls of the pair of vertical plates, L-shaped supporting plates which are arranged on the side walls of the pair of guide plates and used for guiding electrode slices into the conveying assembly are arranged on telescopic shafts of the pair of electric push rods, and scale marks are arranged on the side wall of one guide plate; the anti-pinching device has the advantages that the structure is reasonable, the adjusting speed is high, and the anti-pinching effect is good.

Description

Technical Field

[0001] The utility model relates to a coater, and specifically, to a coater for lithium battery production. Background Art

[0002] Coating is a method of coating a paste polymer, a molten polymer or a polymer solution on paper, cloth, or plastic film to obtain a composite material (film). When manufacturing electrode sheets, coating treatment is generally required. Therefore, a coater for lithium battery production is needed.

[0003] In the prior art, when the existing coater for lithium battery production is in use, when guiding and conveying electrode sheets, generally a bidirectional lead screw is driven to drive a pair of positioning plates to move closer to each other to center and guide the electrode sheets. In this way, during adjustment, the electrode sheets need to be placed at a roughly middle position first, and then the bidirectional lead screw is driven to drive a pair of positioning plates to move closer to each other. During the adjustment process, the positioning plates will push the non-centered side of the electrode sheets to move to achieve centering adjustment. The speed is relatively slow. Moreover, during adjustment, the electrode sheets are easily squeezed, resulting in damage to the electrode sheets. Now there is an urgent need for a coater for lithium battery production to solve the above problems. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a coater for lithium battery production to solve the problems raised in the above background art. The structure of the utility model is reasonable, the adjustment speed is fast, and the anti-pinching effect is good.

[0005] To achieve the above purpose, the utility model is realized through the following technical solutions: A coater for lithium battery production, comprising:

[0006] A bottom plate, on the top of which a support frame, a U-shaped frame and a pair of vertical plates are sequentially arranged. Inside the support frame, the U-shaped frame and the pair of vertical plates, a conveying assembly for conveying electrode sheets is arranged. On the U-shaped frame, a spraying assembly for coating the electrode sheets conveyed by the conveying assembly is arranged;

[0007] A pair of guide plates is arranged between the pair of vertical plates. Electric push rods are arranged on the side walls of the pair of vertical plates. On the telescopic shafts of the pair of electric push rods, there are L-shaped support plates placed on the side walls of the pair of guide plates and used for guiding the electrode sheets into the conveying assembly. A scale line is arranged on the side wall of one of the guide plates, and a guide groove matching the guide plate is opened on the side wall of the L-shaped support plate.

[0008] Further, the conveying assembly includes a conveying motor arranged on the side wall of the support frame, the U-shaped frame or the vertical plate. On the output shaft of the conveying motor, a driving conveying roller is arranged. Inside the support frame, the U-shaped frame or the pair of vertical plates, a driven conveying roller is arranged below the driving conveying roller.

[0009] Further, a pair of L-shaped support plates are symmetrically arranged on the side walls of a pair of guide plates, and the lower side of the inner wall of the L-shaped support plate is flush with the upper end surface of the driven conveying roller.

[0010] Further, the material spraying assembly includes a raw material tank arranged at the top of the U-shaped frame. A material spraying pipe is arranged inside the U-shaped frame above the driven conveying roller. A plurality of nozzles are arranged at the bottom of the material spraying pipe. A pump body is arranged at the top of the raw material tank. The feeding end and the discharging end of the pump body are respectively provided with a feeding pipe inserted into the raw material tank and communicated with the material spraying pipe.

[0011] Further, a feeding port is arranged at the top of the raw material tank, and a sealing plug for sealing the feeding port is arranged at the top of the raw material tank.

[0012] Further, a stirring motor is arranged at the top of the raw material tank, and a stirring rod placed inside the raw material tank is arranged on the output shaft of the stirring motor.

[0013] Further, a heating plate is arranged inside the support frame above the driven conveying roller, and a guide roller is arranged inside the support frame below the heating plate. The upper end surface of the guide roller is flush with the upper end surface of the driven conveying roller.

[0014] For a coating machine for lithium battery production according to the present invention, by obtaining the required scale line to which the L-shaped support plate needs to be adjusted according to the size of the electrode sheet to be coated, then making the electric push rod work to push the L-shaped support plate to move along the side wall of the guide plate and observing the scale line to adjust the L-shaped support plate to the required scale line, thereby completing the adjustment of the centering guidance of the electrode sheet. The speed of adjusting the centering guidance of the electrode sheet is fast, and the electrode sheet will not be pushed and extruded during the adjustment process, thereby avoiding damage to the electrode sheet and having a good anti-pinching effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present invention will become more obvious:

[0016] Figure 1 is a perspective view of a coating machine for lithium battery production according to an embodiment of the present invention;

[0017] Figure 2 is for an embodiment of the present invention Figure 1 magnified view of A in;

[0018] Figure 3 is a perspective view of the connection part of a pair of L-shaped support plates in a coating machine for lithium battery production according to an embodiment of the present invention;

[0019] Figure 4 is a front view sectional view of the raw material tank in a coating machine for lithium battery production according to an embodiment of the present invention;

[0020] In the figure: 1, bottom plate; 2, support frame; 3, conveying assembly; 31, conveying motor; 32, driven conveying roller; 33, driving conveying roller; 4, heating plate; 5, U-shaped frame; 6, raw material tank; 61, feeding port; 62, sealing plug; 7, stirring motor; 8, pump body; 9, feeding pipe; 10, spraying pipe; 11, nozzle; 12, vertical plate; 13, electric push rod; 14, guiding plate; 141, scale line; 15, L-shaped support plate; 151, guiding groove; 16, guiding roller; 17, spraying assembly. Specific embodiments

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] As Figure 1 shown, the present utility model provides a technical solution: a coater for lithium battery production, comprising:

[0023] A bottom plate 1, on the top of the bottom plate 1, a support frame 2, a U-shaped frame 5 and a pair of vertical plates 12 are sequentially arranged. Inside the support frame 2, the U-shaped frame 5 and the pair of vertical plates 12, a conveying assembly 3 for conveying the electrode sheet is arranged. On the U-shaped frame 5, a spraying assembly 17 for coating the electrode sheet conveyed by the conveying assembly 3 is arranged;

[0024] A pair of guiding plates 14 are arranged between the pair of vertical plates 12. Electric push rods 13 are arranged on the side walls of the pair of vertical plates 12. On the telescopic shafts of the pair of electric push rods 13, there are L-shaped support plates 15 placed on the side walls of the pair of guiding plates 14 and used for guiding the electrode sheet into the conveying assembly 3. A scale line 141 is arranged on the side wall of one of the guiding plates 14. A guiding groove 151 matching the guiding plate 14 is opened on the side wall of the L-shaped support plate 15. This design obtains the scale line 141 that the L-shaped support plate 15 needs to be adjusted to according to the size of the electrode sheet to be coated, and then makes the electric push rod 13 work to push the L-shaped support plate 15 to move along the side wall of the guiding plate 14 and observe the scale line 141 to adjust the L-shaped support plate 15 to the required scale line 141, so as to complete the adjustment of the centering guiding of the electrode sheet. The speed of adjusting the centering guiding of the electrode sheet is fast, and the electrode sheet will not be pushed and squeezed during the adjustment process, thus avoiding damage to the electrode sheet and having a good anti-pinching effect.

[0025] Refer to Figure 1 and Figure 2, the conveying assembly 3 includes a conveying motor 31 disposed on the sidewall of the support frame 2, the U-shaped frame 5 or the vertical plate 12. A driving conveying roller 33 is provided on the output shaft of the conveying motor 31. A driven conveying roller 32 is disposed below the driving conveying roller 33 inside the support frame 2, the U-shaped frame 5 or a pair of vertical plates 12. This design drives the driving conveying roller 33 to rotate by the operation of the driving motor. The driving conveying roller 33 rotates to convey the motor sheets between the driving conveying roller 33 and the driven conveying roller 32. The driven conveying roller 32 contacts the bottom of the electrode sheet and rotates simultaneously, so as to facilitate the conveying of the electrode sheet. In order to improve the stability of conveying, the driving conveying roller 33 and the driven conveying roller 32 can be connected by gear meshing according to requirements.

[0026] Refer to Figure 2 and Figure 3 , a pair of L-shaped support plates 15 are symmetrically disposed on the sidewalls of a pair of guide plates 14. The lower side of the inner wall of the L-shaped support plate 15 is flush with the upper end surface of the driven conveying roller 32. This design makes the lower side of the inner wall of the L-shaped support plate 15 flush with the upper end surface of the driven conveying roller 32, so that the L-shaped support plate 15 can center and guide the electrode sheet while supporting the electrode sheet, improving the stability of the electrode sheet entering the inside of the conveying assembly 3. The inner wall of the L-shaped support plate 15 is a smooth surface.

[0027] Refer to Figure 1 and Figure 4 , the material spraying assembly 17 includes a raw material tank 6 disposed on the top of the U-shaped frame 5. A material spraying pipe 10 is disposed above the driven conveying roller 32 inside the U-shaped frame 5. A plurality of nozzles 11 are provided at the bottom of the material spraying pipe 10. A pump body 8 is provided on the top of the raw material tank 6. A feeding pipe 9 and a discharging pipe which are respectively inserted into the inside of the raw material tank 6 and communicated with the material spraying pipe 10 are provided at the feeding end and the discharging end of the pump body 8. This design pumps the raw materials inside the raw material tank 6 to the inside of the material spraying pipe 10 through the conveying pipe by the operation of the pump body 8 and finally uniformly sprays them from the plurality of nozzles 11. Then, under the action of the rotation of the driven conveying roller 32 and the driving conveying roller 33 of the conveying assembly 3 inside the U-shaped frame 5, the raw materials on the surface of the electrode sheet are evenly distributed. Both ends of the material spraying pipe 10 are closed ends, and one of the closed ends is communicated with the feeding pipe 9.

[0028] Refer to Figure 4 , a feeding port 61 is provided on the top of the raw material tank 6. A sealing plug 62 for sealing the feeding port 61 is provided on the top of the raw material tank 6. This design facilitates the replenishment of raw materials into the raw material tank 6 by removing the sealing plug 62 and using the feeding port 61. A stirring motor 7 is provided on the top of the raw material tank 6. A stirring rod disposed inside the raw material tank 6 is provided on the output shaft of the stirring motor 7. This design stirs the raw materials by driving the stirring rod to rotate by the operation of the stirring motor 7, so as to make the raw materials evenly distributed, thereby improving the uniformity of spraying on the electrode sheet.

[0029] Refer to Figure 1, a heating plate 4 is disposed inside the support frame 2 above the driven conveying roller 32, and a guiding roller 16 is disposed inside the support frame 2 below the heating plate 4. The upper end surface of the guiding roller 16 is flush with the upper end surface of the driven conveying roller 32. This design facilitates drying the raw material sprayed on the upper surface of the electrode sheet by using the heating plate 4, guides the electrode sheet under the action of the guiding roller 16, and the guiding roller 16 is rotatably connected to the support frame 2.

[0030] Referring to Figures 1 - 4 , as an embodiment of the present invention: when it is necessary to perform centering and guiding adjustment on the electrode sheet, the staff obtains the required graduation line 141 to which the L-shaped support plate 15 needs to be adjusted according to the size of the electrode sheet to be coated. The longitudinal length of the electrode sheet is equal to the required centering graduation line 141 to which the L-shaped support plate 15 needs to be adjusted. That is, the opposite sides of a pair of L-shaped support plates 15 are adjusted to both sides of the required centering graduation line 141. Then, the electric push rod 13 works to push the L-shaped support plate 15 to move along the side wall of the guiding plate 14 and observe the graduation line 141 to adjust the L-shaped support plate 15 to the required graduation line 141. The guiding groove 151 of the L-shaped support plate 15 moves along the side wall of the guiding plate 14, thereby completing the adjustment of the centering and guiding of the electrode sheet. The speed of adjusting the centering and guiding of the electrode sheet is fast, and the electrode sheet will not be pushed and squeezed during the adjustment process, thereby avoiding damage to the electrode sheet and having a good anti-pinching effect.

[0031] When it is necessary to coat the electrode sheet, the conveying assembly 3 is used to convey the electrode sheet. Then, the stirring motor 7 works to drive the stirring rod to rotate to stir the raw material evenly. Then, the pump body 8 works to send the raw material stirred evenly inside the raw material tank 6 to the inside of the spraying pipe 10 through the feeding pipe 9 and finally spray out from the nozzle 11. Then, under the action of the rotation of the driven conveying roller 32 and the driving conveying roller 33 of the conveying assembly 3 inside the U-shaped frame 5, the raw material on the surface of the electrode sheet is evenly distributed. Then, the electrode sheet with evenly distributed raw material is dried by passing through the heating plate 4, and finally is exported under the action of the conveying assembly 3 inside the support frame 2, improving the practicability of the present invention.

[0032] The foregoing shows and describes the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0033] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coating machine for lithium battery production, comprising: A bottom plate (1), wherein a support frame (2), a U-shaped frame (5) and a pair of vertical plates (12) are sequentially arranged on the top of the bottom plate (1), wherein a conveying assembly (3) for conveying electrode sheets is arranged inside the support frame (2), the U-shaped frame (5) and the pair of vertical plates (12), and a spraying assembly (17) for coating the electrode sheets conveyed by the conveying assembly (3) is arranged on the U-shaped frame (5); It is characterized in that A pair of guide plates (14) are arranged between the pair of vertical plates (12), the side walls of the pair of vertical plates (12) are each provided with an electric push rod (13), and the telescopic shafts of the pair of electric push rods (13) are each provided with an L-shaped support plate (15) which is placed on the side walls of the pair of guide plates (14) and is used to guide the electrode sheet to the inside of the conveying assembly (3), wherein a scale line (141) is arranged on the side wall of one of the guide plates (14), and a guide groove (151) matching the guide plate (14) is opened on the side wall of the L-shaped support plate (15).

2. A coating machine for lithium battery production according to claim 1, characterized in that: The conveying assembly (3) comprises a conveying motor (31) arranged on the side wall of a support frame (2), a U-shaped frame (5) or a vertical plate (12); an active conveying roller (33) is arranged on the output shaft of the conveying motor (31); and a driven conveying roller (32) is arranged below the active conveying roller (33) inside the support frame (2), the U-shaped frame (5) or a pair of vertical plates (12).

3. A coating machine for lithium battery production according to claim 2, characterized in that: A pair of L-shaped support plates (15) are symmetrically arranged on the side walls of a pair of guide plates (14), and the lower side of the inner wall of the L-shaped support plate (15) is flush with the upper end surface of the driven conveying roller (32).

4. A coating machine for lithium battery production according to claim 2, characterized in that: The spray assembly (17) comprises a raw material box (6) arranged on the top of the U-shaped frame (5); a spray pipe (10) is arranged inside the U-shaped frame (5) and is placed above the driven conveying roller (32); a plurality of nozzles (11) are arranged at the bottom of the spray pipe (10); a pump body (8) is arranged on the top of the raw material box (6); and a feed pipe (9) is respectively arranged at the feed end and the discharge end of the pump body (8) and is inserted into the raw material box (6) and connected to the spray pipe (10).

5. A coating machine for lithium battery production according to claim 4, characterized in that: The top of the raw material box (6) is provided with a feeding port (61), and the top of the raw material box (6) is provided with a sealing plug (62) for sealing the feeding port (61).

6. A coating machine for lithium battery production according to claim 4, characterized in that: A stirring motor (7) is arranged on the top of the raw material box (6), and a stirring rod (71) arranged inside the raw material box (6) is arranged on the output shaft of the stirring motor (7).

7. A coating machine for lithium battery production according to claim 4, characterized in that: A heating plate (4) is arranged inside the support frame (2) and is placed above the driven conveying roller (32). A guide roller (16) is arranged inside the support frame (2) and is placed below the heating plate (4). The upper end surface of the guide roller (16) is flush with the upper end surface of the driven conveying roller (32).

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