A wiping roller mechanism of a battery pole piece rolling device

Abstract

The utility model relates to the technical field of lithium battery manufacturing, specifically relates to a kind of battery pole piece roll-pressing equipment's wipe roll mechanism, including frame and be equipped on the driving pressure roller of the frame, the frame also is equipped with driven pressure roller, the driven pressure roller and driving pressure roller between there is the roll gap for lithium battery pole piece to pass, the driving pressure roller top is rotatably equipped with rotating cylinder, the rotating cylinder is uniformly distributed with the air hole towards the driving pressure roller roll face, when using, arc-shaped scraping piece produces a reverse scraping effect to the roll face of driving pressure roller, to effectively scrape off the pole piece material powder, scrapes and other pollutants adhered on roll face, simultaneously, the airflow that air hole sprays can instantaneously blow the scrapes of arc-shaped scraping piece away from roll face, prevent it from being rolled again on roll face or re-adhesion, realized the collaborative cleaning of "scraping-blowing", fundamentally prevented the pole piece sticking roller or secondary pollution due to roll face damp.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery manufacturing technology, and in particular to a wiping roller mechanism of a battery electrode rolling equipment. Background Technology

[0002] During the battery electrode rolling process, the rolling equipment compacts the battery electrode through the rolling gap between the active and driven rollers. This process helps to improve the energy density and consistency of the battery. However, in actual production, residual powder of the electrode material easily adheres to the surface of the rollers. If these residues are not removed in time, they will directly affect the rolling effect of the subsequent electrode, resulting in defects such as scratches and coating peeling on the electrode surface, which in turn affects the electrochemical performance and safety performance of the battery. Therefore, roller wiping is required. Existing technologies usually adopt a design of scraper and wiping cloth structure. Through the cooperation of the cloth feeding roll and the cloth taking roll, the wiping cloth is updated regularly, achieving cleaning without stopping the machine for a certain period of time.

[0003] For example, Chinese patent application number CN 202411070178.3 discloses a lithium battery electrode rolling device, which includes a front-end rolling mechanism. The front-end rolling mechanism includes a front-end upper roller and a front-end lower roller. The front-end upper roller includes a roller body, end posts coaxially disposed at both ends of the roller body, and a hot roller coaxially disposed at both ends of the roller body and sleeved on the end posts. It realizes functions such as rapid heating of the hot roller, hot rolling flattening of the electrode, and limiting and protecting the equipment. However, its friction blades cannot thoroughly clean the roller surface, and during the scraping process, the detached debris may re-adhere to the roller surface, resulting in secondary pollution. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a wiping roller mechanism for a battery electrode rolling equipment, so as to solve the technical problem that the existing friction blades cannot thoroughly clean the roller surface, and the debris that falls off during the scraping process can re-adhere to the roller surface, resulting in secondary pollution.

[0005] To achieve the above objectives, this utility model provides a wiping roller mechanism for a battery electrode rolling equipment, including a frame and an active pressure roller mounted on the frame. A driven pressure roller is also mounted on the frame. A rolling gap for the lithium battery electrode to pass through is provided between the driven pressure roller and the active pressure roller. A rotating cylinder is rotatably mounted above the active pressure roller, and the rotating cylinder has evenly distributed ventilation holes facing the roller surface of the active pressure roller. The wiping roller mechanism further includes: An arc-shaped scraper blade is provided on the rotating cylinder, and the end of the arc-shaped scraper blade is engaged with the roller surface of the active pressure roller; An air pump is located on one side of the rotating cylinder, and the air pump is connected to the interior of the rotating cylinder; A drive unit for driving the active pressure roller and the rotating cylinder to rotate at different speeds.

[0006] Furthermore, there are several arc-shaped scraping blades, which are evenly distributed circumferentially on the rotating cylinder.

[0007] Furthermore, the scraping ends of several of the aforementioned arc-shaped scraping blades are all made of rubber.

[0008] Furthermore, the air pump is connected to the rotating cylinder via a rotary joint, and the pipeline connecting the air pump and the rotary joint is a flexible hose.

[0009] Furthermore, the drive unit includes: The drive motor is mounted on the frame; The drive wheel is located at the output end of the drive motor; A rotating shaft is located on the other side of the drive wheel, and the rotating shaft is connected to the drive pressure roller; Rotate the internal gear ring mounted on the frame, and the driving wheel meshes with the internal gear ring; A second rotating shaft is mounted on the frame and connected to the rotating cylinder; A driven wheel is mounted on the second rotating shaft, and the driven wheel meshes with the internal gear ring.

[0010] Furthermore, the diameter of the driving wheel is twice the diameter of the driven wheel.

[0011] Furthermore, in the vertical direction, the driving wheel and the driven wheel are offset from each other.

[0012] Furthermore, the frame is provided with a lifting plate, the driven pressure roller is mounted on the lifting plate, and the lifting plate can be adjusted up and down by adjusting screws and locking nuts.

[0013] The beneficial effects of this utility model are as follows: When in use, the arc-shaped scraper blade generates a reverse scraping action on the roller surface of the active pressure roller, thereby effectively scraping away the electrode material powder, debris and other contaminants adhering to the roller surface. At the same time, the airflow ejected from the vent hole can instantly blow the debris scraped up by the arc-shaped scraper blade away from the roller surface, preventing it from being rolled back onto the roller surface or re-adhering. This achieves the synergistic cleaning of "scraping-blowing", fundamentally preventing electrode sticking to the roller or secondary contamination caused by the dampness of the roller surface. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an assembly diagram of the drive unit in this utility model; Figure 3 This is a schematic diagram of the assembly of the drive unit, the active pressure roller, and the rotating cylinder in this utility model; Figure 4 This is a schematic diagram of the assembly of the driven pressure roller and the lifting plate in this utility model.

[0016] The diagram is marked as follows: 1. Frame; 2. Driven pressure roller; 3. Driven pressure roller; 4. Rotating cylinder; 5. Vent hole; 6. Arc-shaped scraper; 7. Air pump; 8. Drive motor; 9. Drive wheel; 10. Shaft 1; 11. Internal gear ring; 12. Shaft 2; 13. Driven wheel; 14. Lifting plate; 15. Adjusting screw. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] The first aspect of this utility model proposes a wiping roller mechanism for a battery electrode rolling device, such as... Figure 1-4As shown, the device includes a frame 1 and an active pressure roller 2 mounted on the frame 1. A driven pressure roller 3 is also mounted on the frame 1. A roller gap for the lithium battery electrode sheets to pass through is formed between the driven pressure roller 3 and the active pressure roller 2. A rotating cylinder 4 is rotatably mounted above the active pressure roller 2. Ventilation holes 5 are evenly distributed on the rotating cylinder 4 facing the roller surface of the active pressure roller 2. The wiping roller mechanism also includes: An arc-shaped scraper 6 is provided on the rotating cylinder 4, and the end of the arc-shaped scraper 6 is in contact with the roller surface of the active pressure roller 2; An air pump 7 is located on one side of the rotating cylinder 4 and is connected to the interior of the rotating cylinder 4. A drive unit used to drive the active pressure roller 2 and the rotating cylinder 4 to rotate at different speeds.

[0020] In this embodiment, during use, the active pressure roller 2 rotates at a uniform speed according to the production line requirements to transport the electrode sheets. At the same time, the drive unit drives the rotating cylinder 4 to rotate at a different linear speed than the active pressure roller 2. The arc-shaped scraper blade 6 fixed on the rotating cylinder 4 moves accordingly, and its end generates a reverse scraping action on the roller surface of the active pressure roller 2, thereby effectively scraping away the electrode material powder, debris and other contaminants adhering to the roller surface. At the same time, the compressed gas provided by the air pump 7 enters the interior of the high-speed rotating cylinder 4 through the rotary joint, and then sprays out from the evenly distributed vent holes 5, directly acting on the roller surface area that has just been scraped. The airflow can instantly blow the debris scraped by the arc-shaped scraper blade 6 away from the roller surface, preventing it from being rolled onto the roller surface again or re-adhering, thus realizing the coordinated cleaning of "scraping-blowing".

[0021] In this embodiment, as Figure 3 As shown, there are several arc-shaped scraper blades 6, which are evenly distributed circumferentially on the rotating cylinder 4. This allows the rotating cylinder 4 to perform multiple continuous scraping operations on the surface of the active pressure roller 2 with each rotation, significantly increasing the cleaning frequency and efficiency. Simultaneously, the multiple scraper blades are evenly stressed, resulting in more uniform wear and helping to extend the service life of the entire cleaning assembly.

[0022] In this embodiment, as Figure 3 As shown, the scraping ends of several arc-shaped scraping blades 6 are all made of rubber, which has a certain degree of elasticity and flexibility. This ensures effective contact with the roller surface and guarantees the scraping effect. Furthermore, because its hardness is lower than that of the metal roller surface, it can greatly avoid scratching or wear on the precision-machined pressure roller surface, effectively protecting the expensive pressure roller components.

[0023] In this embodiment, as Figure 3As shown, the air pump 7 is connected to the rotating cylinder 4 via a rotary joint. The pipeline connecting the air pump 7 and the rotary joint is a flexible hose. The rotary joint is a key component for achieving communication between the fixed air source and the rotating part. It can ensure that the air path remains sealed and unobstructed while the rotating cylinder 4 is rotating continuously, and that air is continuously supplied. The use of a flexible hose connection provides installation flexibility, facilitates pipeline layout, and can absorb slight vibrations during equipment operation.

[0024] In this embodiment, as Figure 2 As shown, the drive unit includes: Drive motor 8 is mounted on frame 1; The drive wheel 9 is located at the output end of the drive motor 8; A rotating shaft 10 is located on the other side of the drive wheel 9, and the rotating shaft 10 is connected to the drive pressure roller 2; Rotate the internal gear ring 11 mounted on the frame 1, and the drive wheel 9 meshes with the internal gear ring 11; A second rotating shaft 12 is mounted on the frame 1 and is connected to the rotating cylinder 4; A driven wheel 13 is mounted on the rotating shaft 12 and meshes with the internal gear ring 11.

[0025] In this embodiment, as Figure 2 As shown, the diameter of the driving wheel 9 is twice the diameter of the driven wheel 13. When the speed of the drive motor 8 is constant, the rotating cylinder 4 will obtain a different and fixed linear speed than the driving pressure roller 2, thereby achieving stable and reliable differential rotation. The structure is simple and the cost is low.

[0026] In this embodiment, as Figure 2 As shown, in the vertical direction, the driving wheel 9 and the driven wheel 13 are offset to avoid interference.

[0027] In this embodiment, as Figure 4 As shown, the frame 1 is equipped with a lifting plate 14, and the driven pressure roller 3 is installed on the lifting plate 14. The lifting plate 14 can be raised and lowered by adjusting the screw 15 and locking nut, realizing the adjustability of the roller pressing gap. By rotating the adjusting screw 15, the raising and lowering of the lifting plate 14 can be precisely controlled, thereby adjusting the gap between the driven pressure roller 3 and the active pressure roller 2 to meet the rolling requirements of battery electrode sheets of different thicknesses.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention includes the claims being limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0029] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wiping roller mechanism of a battery electrode rolling mill, comprising a frame (1) and an active pressure roller (2) disposed on the frame (1), wherein a driven pressure roller (3) is further disposed on the frame (1), and a rolling gap for passing lithium battery electrodes is provided between the driven pressure roller (3) and the active pressure roller (2), characterized in that, A rotating cylinder (4) is rotatably disposed above the active pressure roller (2), and the rotating cylinder (4) is evenly distributed with ventilation holes (5) facing the roller surface of the active pressure roller (2). The wiping roller mechanism also includes: An arc-shaped scraper (6) is provided on the rotating cylinder (4), and the end of the arc-shaped scraper (6) is in contact with the roller surface of the active pressure roller (2); An air pump (7) is provided on one side of the rotating cylinder (4), and the air pump (7) is connected to the interior of the rotating cylinder (4); A drive unit for driving the active pressure roller (2) and the rotating cylinder (4) to rotate at different speeds.

2. The wiping roller mechanism of a battery electrode rolling equipment according to claim 1, characterized in that, There are several arc-shaped scraping blades (6), and the arc-shaped scraping blades (6) are evenly distributed around the rotating cylinder (4).

3. The wiping roller mechanism of a battery electrode rolling equipment according to claim 2, characterized in that, The scraping ends of several of the arc-shaped scraping blades (6) are made of rubber.

4. The wiping roller mechanism of a battery electrode rolling equipment according to claim 1, characterized in that, The air pump (7) is connected to the rotating cylinder (4) through a rotary joint, and the pipeline connecting the air pump (7) and the rotary joint is a flexible hose.

5. The wiping roller mechanism of a battery electrode rolling equipment according to claim 1, characterized in that, The drive unit includes: A drive motor (8) is mounted on the frame (1). The drive wheel (9) is located at the output end of the drive motor (8); A rotating shaft (10) is located on the other side of the drive wheel (9), and the rotating shaft (10) is connected to the drive pressure roller (2). Rotate the internal gear ring (11) mounted on the frame (1), and the drive wheel (9) meshes with the internal gear ring (11); A second rotating shaft (12) is provided on the frame (1), and the second rotating shaft (12) is connected to the rotating cylinder (4). A driven wheel (13) is provided on the rotating shaft (12), and the driven wheel (13) meshes with the internal gear ring (11).

6. The wiping roller mechanism of a battery electrode rolling equipment according to claim 5, characterized in that, The diameter of the driving wheel (9) is twice the diameter of the driven wheel (13).

7. The wiping roller mechanism of a battery electrode rolling equipment according to claim 5, characterized in that, In the vertical direction, the driving wheel (9) and the driven wheel (13) are staggered.

8. The wiping roller mechanism of a battery electrode rolling equipment according to claim 1, characterized in that, The frame (1) is provided with a lifting plate (14), and the driven pressure roller (3) is installed on the lifting plate (14). The lifting plate (14) can be adjusted up and down by adjusting screw (15) and locking nut.

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