Lithium battery coating extrusion head capable of being automatically adjusted

Abstract

The utility model discloses an automatically adjustable extrusion head for lithium battery coating, which comprises a base, the upper surface of the base is fixedly connected with a first fixing frame, the inner surface of the first fixing frame is rotatably connected with an unwinding roller, the upper surface of the base is fixedly connected with a second fixing frame, and the second fixing frame is rotatably connected with the unwinding roller. The outer surface of the second fixing frame is fixedly connected with a first motor. By arranging a second motor, a lead screw, a guide rod, an adjusting box, a spring, a limiting block, a sliding rod, a connecting base, a coating roller and other structures, the amount of extruded coating slurry can be adjusted by changing the dislocation size formed between the coating roller and a discharging hole, and therefore the coating effect is improved; and by arranging a third motor, a rotating shaft, a first gear, a connecting rod, a second gear, stirring blades and other structures, the coating slurry in the stock bin can be mixed, the condition that the slurry sinks to the bottom and is caked on the coating roller is avoided, and therefore the coating effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion heads, in particular to an automatically adjustable extrusion head for lithium battery coating. Background Art

[0002] The lithium battery coating process is a key link in the manufacturing of lithium battery pole pieces. Its purpose is to evenly coat the positive and negative electrode slurries on the metal foil to form pole pieces with specific thickness and uniformity. The coating quality directly affects the electrochemical performance, cycle life and safety of lithium batteries.

[0003] However, the existing extrusion heads used in the coating process of lithium batteries still have certain defects. For example, it is inconvenient to adjust and control the slurry discharge amount of the extrusion head, resulting in the coating slurry only falling in a fixed amount, which lacks practicality; secondly, the slurry in the silo is usually in a static state, which will cause the slurry to sink to the bottom and agglomerate, thereby causing blockage of the extrusion head and affecting the coating effect of the slurry. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide an automatically adjustable extrusion head for lithium battery coating. The amount of extruded coating slurry can be adjusted by changing the size of the offset formed between the coating roller and the blanking hole, thereby improving the coating effect. The coating slurry inside the silo can be mixed to avoid the slurry from sinking to the bottom and agglomerating on the coating roller, thereby further improving the coating effect.

[0005] The utility model also provides the above-mentioned lithium battery coating automatically adjustable extrusion head, including:

[0006] A base, wherein the upper surface of the base is fixedly connected to a first fixed frame, the inner surface of the first fixed frame is rotatably connected to a unwinding roller, the upper surface of the base is fixedly connected to a second fixed frame, the outer surface of the second fixed frame is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a winding roller, the upper surface of the base is fixedly connected to a first adjusting frame, the upper end of the first adjusting frame is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a lead screw, the upper surface of the base is fixedly connected to a second adjusting frame, and the inner surface of the second adjusting frame is fixedly connected to A guide rod is connected, and the outer surface of the lead screw is threadedly connected to a first slider, the right surface of the first slider is fixedly connected to a material bin, the right surface of the material bin is fixedly connected to a second slider, the upper surface of the material bin is provided with a feeding bin, the inner surface of the material bin is fixedly connected to an adjusting box, the inner surface of the adjusting box is fixedly connected to a spring, the lower end of the spring is fixedly connected to a limiting block, the lower surface of the limiting block is fixedly connected to a sliding rod, the lower end of the sliding rod is fixedly connected to a connecting seat, the inner surface of the connecting seat is rotatably connected to a coating roller, and the lower surface of the material bin is provided with a blanking hole.

[0007] The upper surface of the silo is fixedly connected to a fixed seat, the upper surface of the fixed seat is fixedly connected to a third motor, the output end of the third motor is fixedly connected to a rotating shaft, the outer surface of the rotating shaft is fixedly connected to a first gear, the inner surface of the silo is rotatably connected to a connecting rod, the outer surface of the connecting rod is fixedly connected to a second gear, and the outer surface of the connecting rod is fixedly connected to a stirring blade.

[0008] According to the lithium battery coating automatically adjustable extrusion head, the outer surface of the winding roller is rotatably connected to the second fixed frame, and the outer surface of the lead screw is rotatably connected to the first adjustment frame.

[0009] According to the lithium battery coating automatically adjustable extrusion head, the outer surface of the first slider is slidably connected to the first adjustment frame, the outer surface of the guide rod is slidably connected to the second slider, and the outer surface of the second slider is slidably connected to the second adjustment frame.

[0010] According to the lithium battery coating automatically adjustable extrusion head, the number of the adjustment boxes is two and they are symmetrically distributed left and right, the outer surface of the limit block is slidably connected to the adjustment box, and the outer surface of the slide rod is slidably connected to the adjustment box.

[0011] According to the lithium battery coating, the extrusion head can be automatically adjusted, the outer surface of the connecting seat is in contact with the material bin, and the outer surface of the coating roller is in contact with the material bin, so as to avoid the overflow of the slurry.

[0012] According to the lithium battery coating automatically adjustable extrusion head, the outer surface of the rotating shaft is rotatably connected to the fixing seat, and the first gear is meshed with the second gear.

[0013] According to the lithium battery coating automatically adjustable extrusion head, the number of the second gears is two and they are symmetrically distributed left and right.

[0014] According to the lithium battery coating automatically adjustable extrusion head, the first motor, the second motor and the third motor are all electrically connected to an external power source.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By setting up structures such as a second motor, a lead screw, a guide rod, an adjustment box, a spring, a limit block, a slide rod, a connecting seat and a coating roller, the amount of the extruded coating slurry can be adjusted by changing the offset size formed between the coating roller and the blanking hole, thereby improving the coating effect;

[0017] By providing a third motor, a rotating shaft, a first gear, a connecting rod, a second gear and a stirring blade and other structures, the coating slurry inside the silo can be mixed to prevent the slurry from sinking to the bottom of the coating roller and agglomerating, thereby further improving the coating effect.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0020] Figure 1 This is a schematic diagram of the overall structure of the automatic adjustable extrusion head for lithium battery coating of the utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the automatic adjustable extrusion head for lithium battery coating of the utility model;

[0022] Figure 3 This is a cross-sectional view of the silo structure of the utility model for coating lithium batteries with an automatically adjustable extrusion head;

[0023] Figure 4 The utility model is a schematic diagram of the extrusion state structure of the coating roller of the lithium battery coating automatically adjustable extrusion head.

[0024] Legend:

[0025] 1. Base; 2. First fixed frame; 3. Unwinding roller; 4. Second fixed frame; 5. First motor; 6. Winding roller; 7. First adjusting frame; 8. Second motor; 9. Lead screw; 10. Second adjusting frame; 11. Guide rod; 12. First slider; 13. Material bin; 14. Second slider; 15. Feeding bin; 16. Adjusting box; 17. Spring; 18. Limit block; 19. Sliding rod; 20. Connecting seat; 21. Coating roller; 22. Fixed seat; 23. Third motor; 24. Rotating shaft; 25. First gear; 26. Connecting rod; 27. Second gear; 28. Stirring blade; 29. ​​Dropping hole. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0027] Reference Figure 1-4The lithium battery coating automatic adjustable extrusion head of the utility model embodiment comprises: a base 1, a first fixed frame 2 is fixedly connected to the upper surface of the base 1, a unwinding roller 3 is rotatably connected to the inner surface of the first fixed frame 2, a second fixed frame 4 is fixedly connected to the upper surface of the base 1, a first motor 5 is fixedly connected to the outer surface of the second fixed frame 4, a winding roller 6 is fixedly connected to the output end of the first motor 5, a first adjusting frame 7 is fixedly connected to the upper surface of the base 1, a second motor 8 is fixedly connected to the upper end of the first adjusting frame 7, a lead screw 9 is fixedly connected to the output end of the second motor 8, a second adjusting frame 10 is fixedly connected to the upper surface of the base 1, a guide rod 11 is fixedly connected to the inner surface of the second adjusting frame 10, a first slider 12 is threadedly connected to the outer surface of the lead screw 9, a material bin 13 is fixedly connected to the right surface of the first slider 12, a second slider 14 is fixedly connected to the right surface of the material bin 13, a feeding bin 15 is arranged on the upper surface of the material bin 13, an adjusting box 16 is fixedly connected to the inner surface of the material bin 13, and an adjusting box 1 6 is fixedly connected with a spring 17 on the inner surface, and the lower end of the spring 17 is fixedly connected with a limit block 18, and the lower surface of the limit block 18 is fixedly connected with a slide bar 19, and the lower end of the slide bar 19 is fixedly connected with a connecting seat 20, and the inner surface of the connecting seat 20 is rotatably connected with a coating roller 21, and a blanking hole 29 is provided on the lower surface of the silo 13, the outer surface of the winding roller 6 is rotatably connected with the second fixed frame 4, the outer surface of the lead screw 9 is rotatably connected with the first adjusting frame 7, the outer surface of the first slider 12 is slidably connected with the first adjusting frame 7, the outer surface of the guide rod 11 is slidably connected with the second slider 14, and the outer surface of the second slider 14 is slidably connected with the second adjusting frame 10, the number of the adjusting boxes 16 is two and they are symmetrically distributed on the left and right, the outer surface of the limit block 18 is slidably connected with the adjusting box 16, the outer surface of the slide bar 19 is slidably connected with the adjusting box 16, the outer surface of the connecting seat 20 is in contact with the silo 13, and the outer surface of the coating roller 21 is in contact with the silo 13, and the first motor 5 and the second motor 8 are both electrically connected to the external power supply.

[0028] The upper surface of the silo 13 is fixedly connected to a fixed base 22, the upper surface of the fixed base 22 is fixedly connected to a third motor 23, the output end of the third motor 23 is fixedly connected to a rotating shaft 24, the outer surface of the rotating shaft 24 is fixedly connected to a first gear 25, the inner surface of the silo 13 is rotatably connected to a connecting rod 26, the outer surface of the connecting rod 26 is fixedly connected to a second gear 27, the outer surface of the connecting rod 26 is fixedly connected to a stirring blade 28, the outer surface of the rotating shaft 24 is rotatably connected to the fixed base 22, the first gear 25 is meshed with the second gear 27, the number of the second gears 27 is two and they are symmetrically distributed on the left and right, and the third motor 23 is electrically connected to an external power supply.

[0029] Working principle: During operation, the end of the lithium battery electrode sheet on the unwinding roller 3 is fixed on the winding roller 6, and then the second motor 8 is started to drive the lead screw 9 to drive the material bin 13 to move downward as a whole under the action of the first slider 12 and the second slider 14, and make the coating roller 21 contact with the electrode sheet, and then start the first motor 5 to drive the winding roller 6 to drive the electrode sheet to be wound, and in the winding process, according to the required coating amount, the second motor 8 can be started again to drive the coating roller 21 to squeeze the electrode sheet, so that under the action of the connecting seat 20, the slide bar 19, the limit block 18, and the spring 17, the coating roller 21 is retracted as a whole into the interior of the material bin 13, and is misaligned with the blanking hole 29, so that the slurry inside the material bin 13 can pass. The slurry flows evenly onto the electrode sheet through the formed offset gap, and under the contact between the coating roller 21 and the electrode sheet, the coating roller 21 is rotated again, so that the outflowing slurry is evenly coated on the electrode sheet. At the same time, the size of the offset gap can be controlled according to the overall downward movement distance of the silo 13, so as to improve the coating effect of the electrode sheet. During the coating process, the third motor 23 is started, and the rotating shaft 24 is driven to rotate the stirring blade 28 on the second gear 27 under the action of the first gear 25 and the second gear 27, so that the slurry inside the third motor 23 can be continuously mixed during the coating process, so as to avoid the slurry from sinking to the bottom of the coating roller 21 and agglomerating, thereby further improving the coating effect of the coating roller 21.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. The lithium battery coating can automatically adjust the extrusion head, characterized by: include: A base (1), wherein the upper surface of the base (1) is fixedly connected to a first fixing frame (2), the inner surface of the first fixing frame (2) is rotatably connected to a reeling roller (3), the upper surface of the base (1) is fixedly connected to a second fixing frame (4), the outer surface of the second fixing frame (4) is fixedly connected to a first motor (5), the output end of the first motor (5) is fixedly connected to a reeling roller (6), the upper surface of the base (1) is fixedly connected to a first adjusting frame (7), the upper end of the first adjusting frame (7) is fixedly connected to a second motor (8), the output end of the second motor (8) is fixedly connected to a lead screw (9), the upper surface of the base (1) is fixedly connected to a second adjusting frame (10), the inner surface of the second adjusting frame (10) is fixedly connected to a guide rod (11), the lead screw The outer surface of (9) is threadedly connected to a first slider (12), the right surface of the first slider (12) is fixedly connected to a material bin (13), the right surface of the material bin (13) is fixedly connected to a second slider (14), the upper surface of the material bin (13) is provided with a feeding bin (15), the inner surface of the material bin (13) is fixedly connected to an adjusting box (16), the inner surface of the adjusting box (16) is fixedly connected to a spring (17), the lower end of the spring (17) is fixedly connected to a limit block (18), the lower surface of the limit block (18) is fixedly connected to a slide rod (19), the lower end of the slide rod (19) is fixedly connected to a connecting seat (20), the inner surface of the connecting seat (20) is rotatably connected to a coating roller (21), and the lower surface of the material bin (13) is provided with a drop hole (29); The upper surface of the material bin (13) is fixedly connected to a fixing seat (22), the upper surface of the fixing seat (22) is fixedly connected to a third motor (23), the output end of the third motor (23) is fixedly connected to a rotating shaft (24), the outer surface of the rotating shaft (24) is fixedly connected to a first gear (25), the inner surface of the material bin (13) is rotatably connected to a connecting rod (26), the outer surface of the connecting rod (26) is fixedly connected to a second gear (27), and the outer surface of the connecting rod (26) is fixedly connected to a stirring blade (28).

2. The automatically adjustable extrusion head for lithium battery coating according to claim 1, characterized in that: The outer surface of the winding roller (6) is rotatably connected to the second fixed frame (4), and the outer surface of the lead screw (9) is rotatably connected to the first adjustment frame (7).

3. The automatically adjustable extrusion head for lithium battery coating according to claim 1, characterized in that: The outer surface of the first sliding block (12) is slidably connected to the first adjustment frame (7), the outer surface of the guide rod (11) is slidably connected to the second sliding block (14), and the outer surface of the second sliding block (14) is slidably connected to the second adjustment frame (10).

4. The automatically adjustable extrusion head for lithium battery coating according to claim 1, characterized in that: The number of the regulating boxes (16) is two and they are symmetrically distributed left and right. The outer surface of the limit block (18) is slidably connected to the regulating box (16), and the outer surface of the sliding rod (19) is slidably connected to the regulating box (16).

5. The automatically adjustable extrusion head for lithium battery coating according to claim 1, characterized in that: The outer surface of the connecting seat (20) is in contact with the material bin (13), and the outer surface of the coating roller (21) is in contact with the material bin (13).

6. The automatically adjustable extrusion head for lithium battery coating according to claim 1, characterized in that: The outer surface of the rotating shaft (24) is rotatably connected to the fixing seat (22), and the first gear (25) is meshed with the second gear (27).

7. The automatically adjustable extrusion head for lithium battery coating according to claim 1, characterized in that: The number of the second gears (27) is two and they are symmetrically distributed left and right.

8. The automatically adjustable extrusion head for lithium battery coating according to claim 1, characterized in that: The first motor (5), the second motor (8) and the third motor (23) are all electrically connected to an external power source.

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