Roller press for producing lithium battery

Abstract

The utility model relates to the technical field of lithium battery production, and discloses a roller press for producing lithium batteries, which comprises a roller press box, through grooves are arranged at the left end and the right end of the roller press box, a box door is hinged to the front end of the roller press box, and limiting blocks are fixedly connected to the left sides of the inner walls of the front end and the rear end of the roller press box. The inner walls of the front end and the rear end of the rolling box are connected with pressing rollers through driving assemblies, the front side and the rear side of the outer wall of each pressing roller are fixedly connected with fixing rings, the opposite ends of the fixing rings are fixedly connected with a plurality of spring barrels, the opposite ends of the spring barrels are fixedly connected with limiting rings, and a cleaning assembly is arranged at the top end of the rolling box. And a collecting assembly is arranged on the inner wall of the bottom end of the rolling box. According to the utility model, the moving pole piece is limited by the limiting block, and the pole piece in the processing process is limited by the limiting ring, so that the influence on the quality of the pole piece caused by inclination during processing is avoided, the extension uniformity of the pole piece is ensured, and the damage caused by excessive extension of the pole piece to one side is prevented.

Description

Technical Field

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

[0002] Lithium batteries are batteries that contain lithium in their electrochemical system. They are mainly composed of positive electrode, negative electrode, separator, electrolyte, and aluminum-plastic film or aluminum shell. After the electrode is processed by the coating machine, it needs to be transferred to the rolling device for further processing. The rolling device can further compact the coated electrode to improve the energy density of the lithium battery, enabling it to store more electricity.

[0003] A search revealed that the lithium battery electrode rolling device (publication number CN221841867U) includes a worktable, a waste recycling component, a worktable plate, a pressure roller assembly, and a fertilizer cleaning component. The fertilizer cleaning component comprises an upper roller cleaning component and a lower roller cleaning component. The upper roller cleaning component includes an upper roller cleaning scraper mounting platform and an upper roller scraper. The lower roller cleaning component includes a servo motor and a lower roller scraper. The worktable has an internal cavity. The waste recycling component includes a recycling box and a pump. This utility model belongs to the field of lithium battery production technology, specifically a lithium battery electrode rolling device. It effectively solves the problems in existing technologies where material easily adheres to the rollers during the pressure roller extrusion process, leading to unevenness or damage to the electrode sheets, and where existing cleaning devices are inconvenient for removing small dust particles. This is a novel lithium battery electrode rolling device.

[0004] Based on the aforementioned patent, an upper roller cleaning component is used to remove material adhering to the upper roller, and a lower roller scraper is used to remove material from the lower roller. The waste generated during cleaning passes through the worktable and falls into a recycling bin for collection. A pump is used to attract fine dust, which is then collected in the recycling bin for recycling, allowing for reuse and reducing the danger of manual cleaning. However, the material removed by the upper roller cleaning component will fall onto the flattened electrode surface, and as the electrode is wound up, it will still cause scratches or marks on the electrode. Furthermore, there is no limit to the electrode, which makes it easy for the electrode to tilt during actual processing, affecting the quality of the rolled electrode. In response to this technical problem, this application proposes a rolling mill for producing lithium batteries. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rolling mill for producing lithium batteries. The mill uses a limiting block to limit the movement of the electrode sheets and a limiting ring to limit the electrode sheets during processing, thus preventing tilting during processing that could affect the quality of the electrode sheets. It also ensures the uniformity of electrode sheet extension and prevents the electrode sheets from extending excessively to one side and causing damage.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A roller press for producing lithium batteries includes a roller press box with through slots at both ends. A door is hinged to the front end of the roller press box. Limit blocks are fixedly connected to the left side of the inner walls at both ends of the roller press box. Pressure rollers are connected to the inner walls at both ends of the roller press box via a drive assembly. Fixing rings are fixedly connected to the front and rear sides of the outer walls of the pressure rollers. Multiple spring cylinders are fixedly connected to opposite ends of the fixing rings. Limit rings are fixedly connected to opposite ends of the spring cylinders. A cleaning assembly is provided at the top of the roller press box, and a collection assembly is provided on the inner wall at the bottom of the roller press box.

[0008] Furthermore, the drive assembly includes two rotating shafts rotatably connected to the inner walls of the front and rear ends of the roller press box. Each rotating shaft has a transmission gear fixedly connected to its rear outer wall, and the two transmission gears are meshed together.

[0009] Furthermore, a protective shell is fixedly connected to the front end of the roller press box, and a drive motor is fixedly connected to the front end of the roller press box corresponding to the inside of the protective shell. The front end of the upper rotating shaft is fixedly connected to the drive end of the drive motor.

[0010] Furthermore, the inner walls of the limiting rings are all slidably connected to the outer walls of the pressure rollers, and scrapers are provided on the right side of the outer walls of the pressure rollers. The front and rear ends of the scrapers are fixedly connected to the inner walls of the roller press box.

[0011] Furthermore, the cleaning assembly includes a fan fixedly connected to the top of the roller press box, an air supply pipe fixedly connected to the air outlet end of the fan, and an air outlet fixedly connected to the other end of the air supply pipe.

[0012] Furthermore, the outer wall of the air duct extends through the right side of the rear end of the roller press box, and the rear end of the air outlet is fixedly connected to the right side of the inner wall of the rear end of the roller press box.

[0013] Furthermore, the collection assembly includes a collection box fixedly connected to the inner wall at the bottom of the roller press box, a filter plate fixedly connected to the inner wall at the top of the collection box, and an inner box provided on the inner wall of the collection box.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the moving electrode is limited by the limiting block and the electrode is limited by the limiting ring during the processing, so as to avoid tilting during processing and thus affecting the quality of the electrode. At the same time, it also ensures the uniformity of the electrode extension and prevents the electrode from being overextended to one side and causing damage.

[0016] 2. In this utility model, the scraper can scrape off the material adhering to the surfaces of the two pressure rollers. The material scraped off by the lower pressure roller will fall directly onto the surface of the filter plate and fall into the inner box through the holes. The material scraped off by the upper pressure roller will first fall onto the upper surface of the electrode sheet. The air outlet will blow the material on the upper surface of the electrode sheet to make it fall off and enter the inner box for collection. Attached Figure Description

[0017] Figure 1 This is a perspective view of a roller press for producing lithium batteries according to the present invention.

[0018] Figure 2 This is a cross-sectional view of the roller press box in a roller press for producing lithium batteries according to the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the pressure roller in a roller press for producing lithium batteries, as proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the collection box in a roller press for producing lithium batteries, as proposed in this utility model.

[0021] Legend:

[0022] 1. Roller press box; 2. Through groove; 3. Box door; 4. Protective shell; 5. Fan; 6. Limit block; 7. Drive motor; 8. Rotary shaft; 9. Press roller; 10. Filter plate; 11. Collection box; 12. Air outlet; 13. Air duct; 14. Scraper; 15. Fixing ring; 16. Spring cylinder; 17. Limit ring; 18. Transmission gear; 19. Inner box. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1-3An embodiment of this utility model provides a roller press for producing lithium batteries, including a roller press box 1. The roller press box 1 has through slots 2 at both the left and right ends. The front end of the roller press box 1 is hinged to a door 3. Limiting blocks 6 are fixedly connected to the left side of the inner walls at both the front and rear ends of the roller press box 1. The inner walls at both the front and rear ends of the roller press box 1 are connected to pressure rollers 9 through a drive assembly. The drive assembly includes two rotating shafts 8 rotatably connected to the inner walls at both the front and rear ends of the roller press box 1. Transmission gears 18 are fixedly connected to the rear side of the outer wall of the rotating shafts 8. The two transmission gears 18 are meshed. A protective shell 4 is fixedly connected to the front end of the roller press box 1. A drive motor 7 is fixedly connected to the front end of the roller press box 1 corresponding to the interior of the protective shell 4. The front end of the upper rotating shaft 8 is fixedly connected to the drive end of the drive motor 7. Fixing rings 15 are fixedly connected to the front and rear sides of the outer wall of the pressure roller 9. Multiple spring cylinders 16 are fixedly connected to one end of each fixing ring 15. Limiting rings 17 are fixedly connected to one end of each spring cylinder 16. The inner walls of the limiting rings 17 are slidably connected to the outer wall of the pressure roller 9.

[0025] Specifically, the electrode sheet enters the roller pressing box 1 through the through groove 2 at the left end of the roller pressing box 1, and is limited by the limiting block 6 to prevent tilting during processing, which would affect the quality of the electrode sheet. The upper rotating shaft 8 is driven by the drive motor 7 to rotate, and the two transmission gears 18 work together to transmit the transmission, so that the lower rotating shaft 8 follows the upper rotating shaft 8 to rotate in the opposite direction to process the electrode sheet. The limiting ring 17 on the rotating shaft 8 will limit the electrode sheet during the processing. At the same time, when the rotating shaft 8 flattens the electrode sheet and causes the electrode sheet to extend, the electrode sheet will push the limiting ring 17 to compress the spring cylinder 16 until the elastic limit of the spring cylinder 16 is reached, to ensure the consistency of the electrode sheet extension and prevent the electrode sheet from extending to one side too much and causing damage. The spring cylinder 16 can reset the limiting ring 17 after processing to ensure that the electrode sheet will not be skewed when it first contacts the pressure roller 9 when processing the next batch of electrode sheets.

[0026] Reference Figure 2 So and Figure 4 Each of the outer right sides of the pressure roller 9 is provided with a scraper 14. Both ends of the scraper 14 are fixedly connected to the inner wall of the roller press box 1. A cleaning assembly is provided at the top of the roller press box 1. The cleaning assembly includes a fan 5 fixedly connected to the top of the roller press box 1. An air supply pipe 13 is fixedly connected to the air outlet end of the fan 5. An air outlet 12 is fixedly connected to the other end of the air supply pipe 13. The outer wall of the air supply pipe 13 passes through the right side of the rear end of the roller press box 1. The rear end of the air outlet 12 is fixedly connected to the right side of the inner wall of the rear end of the roller press box 1. A collection assembly is provided on the inner wall of the bottom end of the roller press box 1. The collection assembly includes a collection box 11 fixedly connected to the inner wall of the bottom end of the roller press box 1. A filter plate 10 is fixedly connected to the inner wall of the top end of the collection box 11. An inner box 19 is provided on the inner wall of the collection box 11.

[0027] Specifically, since some material may adhere to the pressure rollers 9 during the electrode processing, the scraper 14 can scrape off the material adhering to the surfaces of the two pressure rollers 9. The material scraped off by the lower pressure roller 9 will fall directly onto the surface of the filter plate 10 and fall into the inner box 19 through the holes. The material scraped off by the upper pressure roller 9 will first fall onto the upper surface of the electrode. When it moves to the front of the air outlet 12, the wind generated by the fan 5 will send it into the air outlet 12 along the air duct 13 and blow it out, blowing off the material on the upper surface of the electrode and causing it to fall into the inner box 19 for collection. After a period of time, the staff will pull the handle on the box door 3 to lift the box door 3 and pull the inner box 19 out of the collection box 11 for cleaning.

[0028] Working principle: The electrode sheet enters the roller pressing box 1 through the through groove 2 at the left end of the roller pressing box 1 and is limited by the limiting block 6. Then, the drive motor 7 drives the upper rotating shaft 8 to rotate, and the two transmission gears 18 cooperate to transmit the transmission, so that the lower rotating shaft 8 follows the upper rotating shaft 8 to rotate in the opposite direction, thus processing the electrode sheet. The limiting ring 17 on the rotating shaft 8 limits the electrode sheet during the processing. Since some material will stick to the rollers 9 during the electrode sheet processing, the scraper 14 can remove the material adhering to the surfaces of the two rollers 9. The material scraped off by the lower pressure roller 9 will fall directly onto the surface of the filter plate 10 and into the inner box 19 through the holes. The material scraped off by the upper pressure roller 9 will first fall onto the upper surface of the electrode. When it moves to the front of the air outlet 12, the air force generated by the fan 5 will send it into the air outlet 12 through the air duct 13 and blow it out, causing the material on the upper surface of the electrode to fall off and enter the inner box 19 for collection. After a period of time, the staff will pull the handle on the box door 3 to lift the box door 3 and pull the inner box 19 out of the collection box 11 for cleaning.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A roller press for producing lithium batteries, characterized in that, The roller press box (1) is provided with through slots (2) at both the left and right ends. The front end of the roller press box (1) is hinged to a door (3). Limit blocks (6) are fixedly connected to the left side of the inner wall at both the front and rear ends of the roller press box (1). Pressure rollers (9) are connected to the inner wall at both the front and rear ends of the roller press box (1) through a drive assembly. Fixing rings (15) are fixedly connected to the front and rear sides of the outer wall of the pressure rollers (9). Multiple spring cylinders (16) are fixedly connected to one end of each fixing ring (15). Limit rings (17) are fixedly connected to one end of each spring cylinder (16). A cleaning assembly is provided at the top of the roller press box (1). A collection assembly is provided on the inner wall at the bottom end of the roller press box (1).

2. The roller press for producing lithium batteries according to claim 1, characterized in that: The drive assembly includes two rotating shafts (8) rotatably connected to the inner walls of the front and rear ends of the roller press (1). Each rotating shaft (8) is fixedly connected to a transmission gear (18) on the rear side of its outer wall, and the two transmission gears (18) are meshed.

3. A roller press for producing lithium batteries according to claim 2, characterized in that: The front end of the roller press box (1) is fixedly connected to a protective shell (4), and the front end of the roller press box (1) is fixedly connected to the inside of the protective shell (4), and the front end of the upper rotating shaft (8) is fixedly connected to the drive end of the drive motor (7).

4. A roller press for producing lithium batteries according to claim 1, characterized in that: The inner wall of the limiting ring (17) is slidably connected to the outer wall of the pressure roller (9). The right side of the outer wall of the pressure roller (9) is provided with a scraper (14). The front and rear ends of the scraper (14) are fixedly connected to the inner wall of the roller press box (1).

5. A roller press for producing lithium batteries according to claim 1, characterized in that: The cleaning assembly includes a fan (5) fixedly connected to the top of the roller press box (1), an air supply pipe (13) fixedly connected to the air outlet end of the fan (5), and an air outlet (12) fixedly connected to the other end of the air supply pipe (13).

6. A roller press for producing lithium batteries according to claim 5, characterized in that: The outer wall of the air duct (13) extends through the right side of the rear end of the roller press box (1), and the rear end of the air outlet (12) is fixedly connected to the right side of the inner wall of the rear end of the roller press box (1).

7. A roller press for producing lithium batteries according to claim 1, characterized in that: The collection assembly includes a collection box (11) fixedly connected to the inner wall of the bottom end of the roller press (1), a filter plate (10) fixedly connected to the inner wall of the top end of the collection box (11), and an inner box (19) provided on the inner wall of the collection box (11).

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