A tread cleaning device and a roll stretching mechanism

Abstract

This application discloses a wheel surface cleaning device and a roll forming and extending mechanism. The wheel surface cleaning device includes: a separation component that adheres to the wheel surface of a target wheel and covers the wheel surface of the target wheel axially; a collection component including a collection cavity and a guide zone, wherein the inlet of the guide zone is located at the bottom of the area where the separation component adheres to the target wheel, and an opening at the lowest horizontal height of the guide zone connects to a negative pressure component; the collection cavity is a cavity with an opening on one side facing the separation component, the height of the collection cavity is higher than the guide zone, and the guide zone is at least partially disposed within the collection cavity. The separation component provided in this application separates impurities from the surface of the target wheel during the rotation of the target wheel through its adhesion action, and moves the impurities to the bottom of the guide zone through the concentrating effect of the collection cavity and the guiding effect of the guide zone, thereby discharging the impurities through the negative pressure component connected to the bottom of the guide zone, thus keeping the wheel surface of the target wheel clean and reducing the impact of impurities on the quality of the roll-formed product.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a wheel surface cleaning device and a roll forming and stretching mechanism. Background Technology

[0002] In the production of battery electrodes, rolling is required to achieve sufficient compaction density. The electrodes have alternating coating and foil areas in their transverse direction. Currently, to prevent the coating area, with its larger radial dimension, from extending into the foil area during rolling and affecting subsequent die-cutting, a pre-rolling process is performed on the foil area using rollers corresponding to the coating area. However, due to the high pressure during rolling, the foil, under friction, generates aluminum shavings and other foreign matter in the upper and lower working areas. This foreign matter adheres to the rollers and damages the current and subsequent foil areas during the rolling process, affecting the rolling effect and the final quality of the battery electrodes. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a wheel surface cleaning device and a roll pressing and stretching mechanism to effectively clean the roller surface of the calendered foil area, optimize the roll pressing and stretching effect of the foil area and the finished product quality of the subsequent battery electrode sheets.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A wheel surface cleaning device, comprising:

[0006] The separation component is fitted to the surface of the target wheel, and covers the surface of the target wheel axially.

[0007] The collection component includes a collection chamber and a guide area. The entrance of the guide area is located at the bottom of the area where the separation component and the target wheel are in contact. The guide area has an opening at its lowest horizontal height and is connected to the negative pressure component. The collection chamber is a cavity that opens to one side of the separation component. The height of the collection chamber is higher than that of the guide area, and the guide area is at least partially located inside the collection chamber.

[0008] As can be seen from the above technical solution, one aspect of this disclosure provides a wheel surface cleaning device to keep the wheel surface of a target wheel clean. Specifically, the wheel surface cleaning device includes a separation component, a collection component, and a negative pressure component. The separation component is used to separate impurities on the target wheel. The action area of ​​the separation component is in contact with the wheel surface of the target wheel, and the separation component covers the wheel surface of the target wheel in the axial direction. That is, the lateral dimension of the separation component is larger than the width of the wheel surface, so that impurities present in any area of ​​the wheel surface will be blocked and separated by the separation component. The collection component includes a collection cavity and a guide area. The inlet of the guide area is located at the bottom of the area where the separation component is in contact with the wheel surface. The separation component separates impurities from the wheel surface... Impurities can fall directly to the entrance of the guide zone under gravity and move to the bottom within the guide zone. An opening at the lowest horizontal level of the guide zone connects to the negative pressure component, allowing the suction of the negative pressure component to promptly remove impurities from the guide zone, thus maintaining the continuous and stable operation of the wheel surface cleaning device. Considering the risk of impurity splashing during the interaction between the separation component and the rotating target wheel, the collection chamber is designed as a cavity structure with an opening on one side facing the separation component. Its height is higher than the guide zone, and at least a portion of the guide zone is located within the collection chamber. The collection chamber can block and collect impurities splashed over a larger area, collecting them into the guide zone under gravity, thus achieving more refined cleaning of wheel surface impurities. This structure enables continuous cleaning of the target wheel surface while it is running, maintaining production efficiency while reducing secondary damage such as dents and perforations caused by impurities like aluminum shavings to rolled products, such as battery electrode foil, improving the rolling safety of the foil and reducing damage to the target wheel from impurities, thereby extending the target wheel's service life. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A schematic diagram of the assembly structure of the wheel surface cleaning device and the target wheel provided in an embodiment of the present invention;

[0011] Figure 2 This is a schematic diagram of the internal structure of the wheel surface cleaning device and the target wheel provided in an embodiment of the present invention;

[0012] Figure 3 for Figure 2 Side view;

[0013] Figure 4 for Figure 3 Detailed map of area A in the document;

[0014] Figure 5 This is an isometric view of the wheel surface cleaning device;

[0015] Figure 6 This is a schematic diagram of the structure of the collection cavity and the guide area;

[0016] Figure 7 A schematic diagram of a mounting bracket structure equipped with springs;

[0017] Figure 8 for Figure 7 A schematic diagram of the BB cross-sectional structure.

[0018] in:

[0019] 10 - Separation component; 110 - Scraper; 1110 - Blade surface;

[0020] 20-Collection component; 210-Collection chamber; 2110-Observation window; 220-Guide area; 2210-Upper bottom surface; 2220-Lower bottom surface; 30-Mounting bracket; 40-Base; 50-Spring; 60-Target wheel; 610-Wheel surface. Detailed Implementation

[0021] The core of this application is to disclose a wheel surface cleaning device and a roll pressing and stretching mechanism to effectively clean the roller surface of the calendered foil area, optimize the roll pressing and stretching effect of the foil area and the finished product quality of the subsequent battery electrode sheets.

[0022] To enable those skilled in the art to better understand the present application, embodiments of the present application will be described below with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the utility model described in the claims. Additionally, the complete content of the structures represented in the following embodiments is not limited to those necessary for the solution of the utility model described in the claims.

[0023] In the battery manufacturing process, battery electrodes need to be rolled to increase their compaction density, thereby improving the battery's energy density. A battery electrode consists of a coating area with active material alternately arranged laterally and a foil area without active material coating. The radial dimension of the foil area is usually smaller than that of the coating area, resulting in different elongations of the coating and foil areas during simultaneous rolling. Typically, the coating area extends into the foil area, creating a wavy edge on the electrode.

[0024] Currently, the risk of wavy edges is typically reduced by pre-pressing and stretching the foil area. However, in traditional battery electrode rolling and stretching processes, the high pressure and friction during pre-stretching of the foil area by the pressure rollers cause foreign matter such as aluminum shavings to be generated and adhere to the surface of the pressure rollers. These foreign matter enters the subsequent rolling areas as the pressure rollers rotate, contacting the unstretched foil area and causing surface scratches or localized depressions, reducing the flatness and compaction density consistency of the electrode surface. Traditional cleaning methods such as air blowing or brush cleaning are difficult to remove the adhering impurities under high pressure. Therefore, this application adopts a combination of mechanical peeling and negative pressure collection to directly scrape off foreign matter while constructing a semi-enclosed collection channel to prevent impurities from scattering.

[0025] Specifically, such as Figure 1 and Figure 2 As shown, one aspect of this disclosure provides a wheel surface cleaning device, which mainly includes a separation component 10, a collection component 20, and a negative pressure component. The separation component 10 is a component that contacts the wheel surface 610 of the target wheel 60 and removes foreign objects. The separation component 10 contacts and adheres to the wheel surface 610 of the target wheel 60 through a partial working area, so as to separate impurities based on the protrusions of the wheel surface 610 by mechanical blocking and peeling. It should be noted that the separation component 10 covers the wheel surface 610 of the target wheel 60 in the axial direction, that is, the lateral dimension of the separation component 10 is larger than the width dimension of the wheel surface 610, so that impurities existing in any area on the wheel surface 610 will be blocked and separated by the separation component 10.

[0026] The collection component 20 is a structure for containing and transferring foreign objects. Specifically, it includes a collection chamber 210 and a guide area 220. The guide area 220 is a structure with openings at both ends in the vertical direction. Its top inlet is located at the bottom of the contact area between the separation component 10 and the wheel surface 610. Impurities separated by the separation component 10 on the wheel surface 610 can fall directly to the inlet of the guide area 220 under the action of gravity and move to the bottom of the guide area 220. The bottom of the guide area 220 is connected to the negative pressure component, which is a device for generating suction. Specifically, a vacuum pump or a fan can be used. Through continuous suction, a negative pressure environment is maintained in the guide area 220 and the collection chamber 210, thus keeping the guide area 220 and the collection chamber 210 clean and enabling the wheel surface cleaning device to operate continuously.

[0027] The collection chamber 210 is a semi-enclosed structure, specifically a cavity structure with an opening on one side facing the separation component 10. The vertical height of the collection chamber 210 is higher than that of the guide area 220, and at least a part of the structure of the guide area 220 is disposed within the collection chamber 210. After the separation component 10 separates the impurities on the target wheel 60 in operation, some impurities directly enter the guide area 220 under the action of gravity, while some splashed impurities can be blocked by the collection chamber 210 and collected into the guide area 220, thereby improving the cleaning effect of impurities on the wheel surface 610 more finely.

[0028] During operation of the wheel surface cleaning device provided in this embodiment, the separation component 10 can cooperate with the target wheel 60 in operation without stopping the machine for cleaning, ensuring production efficiency. The contact between the separation component 10 and the wheel surface 610 of the target wheel 60 provides sufficient blocking force to effectively separate impurities adhering to the surface of the target wheel 60, ensuring the cleanliness of the wheel surface 610. This reduces secondary damage such as imprinting and perforation of the foil area by the target wheel 60, improving the quality of the finished product. At the same time, a collection chamber 210 and a guide area 220 are provided to collect falling and splashed impurities, reducing the risk of impurities re-adhering to the wheel surface 610 area and improving the cleaning effect of the wheel surface cleaning device.

[0029] In one embodiment of this disclosure, the separation component 10 directly contacts the wheel surface 610 of the target wheel 60 to separate foreign objects. However, the lack of a stable support structure may cause the separation component 10 to shift or vibrate during dynamic contact, thus affecting the cleaning effect. Therefore, in some embodiments of this disclosure, the wheel surface cleaning device further includes a mounting bracket 30, and the separation component 10 is mounted on the mounting bracket 30.

[0030] The mounting bracket 30 is preferably a rigid metal frame structure, which is detachably connected to the separation component 10 by bolts or clips. The mounting bracket 30 serves as a load-bearing base, and it fixes the separation component 10 in a preset spatial position through mechanical connection. When the target wheel 60 rotates, the rigid structure of the mounting bracket 30 offsets part of the tangential friction force on the separation component 10, thereby reducing the risk of displacement of the separation component 10.

[0031] It should also be noted that the separation component 10 cleans the wheel surface 610 area of ​​the target wheel 60 by means of mechanical obstruction. After a certain period of operation, it will wear out and need to be replaced and adjusted. The mounting bracket 30 that supports the separation component 10 can be disassembled first, which has a larger volume, and the separation component 10 can be disassembled and replaced offline. At the same time, the mounting bracket 30 can also make it easier to adjust the fit between the separation component 10 and the wheel surface 610, thereby reducing the difficulty of disassembling and assembling the separation component 10.

[0032] Based on the above structure, such as Figure 3 As shown, in some embodiments of the present disclosure, the wheel surface cleaning device has a separation component 10 as a scraper 110. The scraper 110 is made of wear-resistant material and is fixedly mounted on the mounting bracket 30 to ensure a stable cleaning effect under high temperature and high pressure. The fixing method on the mounting bracket 30 includes, but is not limited to, bolt connection and snap-fit.

[0033] The scraper 110 extends axially along the target wheel 60 and covers the entire wheel surface 610 of the target wheel 60. It should be noted that the scraper 110 has a sharper end face structure. After it is in contact with the wheel surface 610 of the target wheel 60, it can achieve more thorough cleaning of impurities through the sharper end face. At the same time, by fixing the scraper 110 to the mounting bracket 30, the risk of vibration or displacement of the scraper 110 can be reduced, ensuring the continuous contact between the scraper 110 and the wheel surface 610.

[0034] Preferably, the scraper 110 is set parallel to the axis of the target wheel 60 to ensure that the cleaning action of the scraper 110 is evenly applied to the entire wheel surface 610, thereby improving the consistency and efficiency of cleaning.

[0035] To further optimize the above technical solutions, such as Figure 3 and Figure 4 As shown, the scraper 110 provided in this disclosure has a single-sided cutting edge 1110 structure. The cutting edge 1110 of the scraper 110 is used as the structure for separating impurities from the wheel surface 610. The single-sided cutting edge 1110 structure forms an inclined cutting surface by cutting on one side. The contact line between the cutting edge 1110 and the target wheel 60 extends along the axial direction of the target wheel 60. The cutting edge 1110 structure can further reduce the thickness of the working area of ​​the separation component 10 and achieve a closer fit with the wheel surface 610.

[0036] The collecting cavity 210 and the guide area 220 are positioned towards the cutting edge 1110. The inlet of the guide area 220 is located directly below the contact area between the cutting edge 1110 and the wheel surface 610, and the cutting edge 1110 is positioned towards the rotation direction of the target wheel 60. Figure 3 As shown, the blade 1110 of the scraper 110 faces the opening of the collection chamber 210, while the target wheel 60 rotates counterclockwise to form a cutting and cleaning action with the blade 1110. The impurities attached to the wheel surface 610 are scraped off the wheel surface 610 along the inclined direction of the blade 1110 to achieve thorough cleaning.

[0037] Specifically, when the target wheel 60 rotates, the cutting edge of the single-sided cutting edge 1110 structure can contact and fit with the surface of the wheel surface 610, or even cut into it with a slight interference fit. Impurities are scooped up by the inclined surface of the cutting edge 1110 as the wheel surface 610 rotates, and after the impurities leave the wheel surface 610, they fall downwards under the action of gravity. Since the entrance of the guide area 220 is located directly below the bottom of the contact area between the cutting edge 1110 and the wheel surface 610, the impurities can fall directly into the entrance range of the guide area 220.

[0038] It should be noted that in the above embodiment, the wheel surface 610 is cleaned by a scraper 110. The scraper 110 has a single-sided cutting edge structure. The collection cavity 210 and the guide area 220 are arranged facing the cutting edge 1110, and the cutting edge 1110 is arranged facing the rotation direction of the target wheel 60. The scraper 110 is made of high-hardness alloy material, and the cutting edge 1110 is precision ground to form a sharp single-sided cutting edge. The rigid contact action of the scraper 110 and the inclined structure of the cutting edge 1110 can fit against the wheel surface 610, thereby effectively removing foreign objects on the wheel surface 610 and improving the cleaning effect.

[0039] Furthermore, in the wheel surface cleaning device provided in the embodiments of this disclosure, the separation component 10 is fixedly mounted on the mounting bracket 30. However, in actual use, the fixedly mounted separation component 10 is difficult to adapt to the dynamic changes of foreign matter on the surface of the target wheel 60, resulting in unstable cleaning effect. Therefore, in some embodiments of this disclosure, the separation component 10 is a brush. Specifically, the brush is rotatably mounted on the mounting bracket 30 at both ends along its axial direction and is driven to rotate by a drive structure, such as a motor, so that the brush performs rotation in the opposite direction to the target wheel 60.

[0040] Specifically, the brush is press-fitted onto the wheel surface 610 of the target wheel 60 at the position of the mounting bracket 30 to achieve a close fit with the wheel surface 610. The brush bristles can be made of nylon or polyester fiber, but the bristle length is relatively short, such as 5mm-15mm, to maintain the rigidity of the bristles. At the same time, the bristles have sufficient density to provide sufficient force to remove impurities from the wheel surface 610.

[0041] Rolling bearings or oil-impregnated copper sleeves can be installed at the rotating connection of the mounting bracket 30. When the target wheel 60 rotates, the brush actively rotates in the opposite direction under the support of the mounting bracket 30 and the drive of the drive structure. The relative speed generated by the reverse rotation causes the brush bristles to form a shearing action when they come into contact with the wheel surface 610, which can effectively peel off impurities such as aluminum chips attached to the wheel surface 610.

[0042] It should be noted that, unlike the rigid structure of the scraper 110, the brush, pressed against the wheel surface 610 with a certain force, enhances the cleaning effect and effectively separates foreign objects adhering to the wheel surface 610 by performing a counter-rotating motion with the target wheel 60. Simultaneously, the deformation of the bristles adapts to the slight unevenness of the wheel surface 610, ensuring thorough cleaning. Even after the bristle tips wear, the interference fit between the brush and the wheel surface 610 allows it to continue to achieve a cleaning effect on the wheel surface 610, thus extending the service life of the separation component 10. Furthermore, the brush structure is simple and safe, and easier to maintain and replace.

[0043] It should be further explained that the wheel surface cleaning device can also be equipped with a scraper 110 and a brush structure at the same time. The scraper 110 and the brush contact the wheel surface 610 at different positions in the circumferential direction, so that the wheel surface cleaning device can perform two separation cleaning processes on the wheel surface 610 during the rotation of the target wheel 60, thereby further improving the impurity separation effect of the wheel surface cleaning device on the target wheel 60.

[0044] Furthermore, such as Figure 5 and Figure 6 As shown, in the wheel surface cleaning device provided in this embodiment, the guide area 220 includes an upper bottom surface 2210 and a lower bottom surface 2220 spaced apart in the vertical direction. It should be noted that the cross-section of the guide area 220 in the vertical direction has a contraction structure from the upper bottom surface 2210 to the lower bottom surface 2220, so that it has a guiding effect toward the lower bottom surface 2220.

[0045] The upper bottom surface 2210 serves as an inlet, with its opening located close to the separation component 10. It can be configured as a rectangular opening that is easy to manufacture and structurally stable. The width of the upper bottom surface 2210 matches that of the separation component 10 to receive impurities separated from the wheel surface 610 by the separation component 10. The lower bottom surface 2220 serves as an outlet, with its opening connected to the negative pressure component.

[0046] Furthermore, the cross-section of the guide zone 220 in the horizontal direction exhibits either a linear or continuous arc-shaped change. The linear change of the contraction structure can be achieved through the inclined plane of the sidewall of the guide zone 220, which can guide foreign objects to fall smoothly along a fixed path; while the continuous arc-shaped change can be achieved through the curved surface structure of the sidewall of the guide zone 220, which reduces the risk of foreign objects adhering and accumulating on the inner sidewall of the guide zone 220 through curvature changes.

[0047] Specifically, a uniformly linearly varying cross-sectional structure can employ a tapered contraction design, with the inclination angle between the upper bottom surface 2210 and the lower bottom surface 2220 remaining consistent. Alternatively, it can be achieved using a cross-section resembling an inverted right trapezoid, where the upper bottom surface 2210 and the lower bottom surface 2220 form the two bases of the trapezoid. The hypotenuse of the right trapezoid serves as a guide slope at the bottom of the area where the separation component 10 and the wheel surface 610 are in contact, while the right-angled side of the trapezoid serves as a support surface on the side away from the separation component 10. Foreign matter is drawn into the collection chamber 210 along a straight path by negative pressure. A continuously curved cross-sectional structure can employ a trumpet-shaped contraction design, with the curvature between the upper bottom surface 2210 and the lower bottom surface 2220 continuously changing. Under the guidance of the curved guide surface, foreign matter forms a vortex effect, further accelerating the flow.

[0048] During the operation of the wheel surface cleaning device, the opening of the upper bottom surface 2210 is aligned with the bottom of the area where the separation component 10 is attached, ensuring that foreign objects directly enter the guide area 220. The opening of the lower bottom surface 2220 reduces the cross-sectional area of ​​the bottom of the guide area 220 through a contraction structure, thereby forming an accelerated airflow in the guide area 220 under negative pressure. The flow velocity in the area near the lower bottom surface 2220 increases, accelerating the movement of foreign objects towards the opening of the lower bottom surface 2220. By optimizing the airflow distribution, it improves the efficiency of impurity transport, ensuring continuous discharge of impurities and reducing the risk of stagnation and accumulation in the guide area 220.

[0049] Furthermore, in order to improve the versatility of the wheel surface cleaning device, in some embodiments of this disclosure, the mounting bracket 30 is slidably disposed on the base 40, and the base 40 can be provided with a slide rail or slide path to meet the sliding setting of the mounting bracket 30. The mounting bracket 30 has at least a first working position and a second working position on its sliding path, and the mounting bracket 30 can be locked in the first working position and the second working position.

[0050] Specifically, when the mounting bracket 30 is in the first working position, it can cause the separation component 10 to come into contact with the wheel surface 610 of the target wheel 60. At this time, during the rotation of the target wheel 60, the separation component 10 can separate impurities on the wheel surface 610. When the mounting bracket 30 is in the second working position, it can cause the separation component 10 to separate from the wheel surface 610 of the target wheel 60. When cleaning of the target wheel 60 is not required, the mounting bracket 30 can be adjusted and locked in the second working position to adapt to the current production needs and reduce the wear of the separation component 10, thereby extending the service life of the wheel surface cleaning device.

[0051] Based on the above embodiments, due to the sliding arrangement of the mounting bracket 30, when it is in the first working position, the contact pressure between the separating component 10 and the wheel surface 610 is difficult to maintain stably, which may cause the mounting bracket 30 to move, resulting in fluctuations in the cleaning effect. Therefore, in some embodiments of this disclosure, such as Figure 7 As shown, at least one of the mounting bracket 30 and the separating component 10 is connected to a compressed spring 50. The spring 50 is located on the side of the separating component 10 facing away from the wheel surface 610, and the axis of the spring 50 is parallel to the sliding direction of the mounting bracket 30 along the base 40. The spring 50 can act directly on the separating component 10 or on the mounting bracket 30 to indirectly press the separating component 10 against the wheel surface 610 of the target wheel 60. When the mounting bracket 30 slides along the base 40 to the first working position and locks, the continuous pressure generated by the pre-compression of the spring 50 can act on the separating component 10, maintaining a constant contact effect between the separating component 10 and the wheel surface 610, thus preventing the separation of the separating component 10 from the wheel surface 610 due to the movement of the mounting bracket 30, which would affect smooth cleaning. It should also be noted that the axis of the spring 50 is parallel to the sliding direction of the mounting bracket 30 so that the pressure applied by the spring 50 always coincides with the moving trajectory of the mounting bracket 30, avoiding the risk of the separating component 10 shifting due to lateral force.

[0052] Furthermore, the spring 50 can be set individually and act on the line of symmetry of the integrated structure formed by the mounting bracket 30 and the separation component 10, so as to ensure that the elastic force of the spring 50 can be applied evenly to the separation component 10.

[0053] In other embodiments of this disclosure, such as Figure 7 and Figure 8 As shown, two sets of springs 50 are arranged at a lateral interval along the separation assembly 10. The distance L1 between the two sets of springs 50 is 0.5-1 of the lateral dimension L2 of the separation assembly 10. Specifically, the ratio can be 0.5, 0.7, 0.9 and 1. This ratio can prevent the separation assembly 10 from being worn due to excessive pressure concentration caused by L1 / L2 being too small, and can also ensure that the elastic force of the springs 50 acts within the range of action of the separation assembly 10.

[0054] Specifically, the two sets of springs 50 are arranged with a spacing of 0.5-1 times the lateral dimension of the separating component 10, forming a symmetrical support structure. This evenly distributes the contact pressure along the width of the wheel surface 610. However, if L1 / L2 is less than 0.5, the spacing between the two springs 50 is too small, which may lead to excessive concentration of force and cause the separating component 10 to become skewed. Simultaneously, the two sets of springs 50 have two spaced driving points to enhance their stability during the pressing process of the separating component 10 onto the wheel surface 610, and also provide a certain degree of compensation to improve the contact effect between the separating component 10 and the wheel surface 610.

[0055] In other embodiments of this disclosure, the wheel surface cleaning device further includes a drive assembly, which is a motor or electric motor, to enable the mounting bracket 30 to move on the base 40 in an automated drive manner. In some embodiments, the mounting bracket 30 is connected to the base 40 via a slide rail, and a slider is provided on the slide rail. The slider is driven by the output end of the drive assembly to move along the slide rail, and the bottom of the mounting bracket 30 is fixedly connected to the slider, so that the mounting bracket 30 can slide linearly along the slide rail when the drive assembly is running.

[0056] The drive assembly has a first drive position where the mounting bracket 30 drives the separation component 10 to engage with the wheel surface 610 of the target wheel 60, and a second drive position where the mounting bracket 30 drives the separation component 10 away from the wheel surface 610 of the target wheel 60, thus achieving different engagement relationships between the separation component 10 and the wheel surface 610. It should also be noted that limit blocks can be provided on both sides of the slide rail to limit the sliding stroke of the mounting bracket 30, ensuring stable pressure when the separation component 10 contacts the wheel surface 610 and maintaining the safe operating range of the mounting bracket 30.

[0057] Through the above technical solution, the embodiments of this disclosure can achieve rapid contact and separation between the separation component 10 and the wheel surface 610 by means of the sliding structure of the mounting bracket 30, avoiding operational errors caused by manual adjustment, and ensuring that the cleaning device is completely separated from the wheel surface 610 when not in operation, thereby reducing equipment wear.

[0058] Furthermore, it should be noted that in some embodiments of this disclosure, an observation window 2110 is provided on at least one side wall of the collection cavity 210 and is sealed by a transparent material, such as glass or acrylic structure. While satisfying the sealing requirements, it allows the operator to observe the inside of the collection cavity 210 through the observation window 2110, thereby intuitively understanding the impurity collection status in the collection assembly 20, and promptly detecting and repairing problems when blockages occur in some areas of the collection cavity 210 and the guide area 220.

[0059] Furthermore, another aspect of this disclosure provides a roll forming mechanism, which includes a drive roller and a calendering roller. The drive roller and the calendering roller are arranged with a certain gap to form a gap for the battery electrode to pass through, and to perform roll forming on the foil area of ​​the battery electrode. Simultaneously, the roll forming mechanism also includes a wheel surface cleaning device provided in any of the above embodiments. This wheel surface cleaning device is disposed on one or both of the drive roller and the calendering roller to clean impurities from one or both wheel surfaces 610 of the foil forming area, thereby improving the roll forming effect of the foil area. It should be noted that since the wheel surface cleaning device has the technical effects provided in any of the above embodiments, the roll forming mechanism also has the technical effects provided in any of the above embodiments, and will not be repeated here.

[0060] Furthermore, in the wheel surface cleaning device provided in the embodiments of this disclosure, the active roller is typically larger and covers the entire battery electrode area, while several calendering rollers are provided. Each calendering roller cooperates with a portion of the active roller along its axial direction to achieve roll pressing and stretching of multiple foil areas on the battery electrode. In some embodiments of this disclosure, the separation component 10 is movable along the axial direction of the calendering roller, so that the position of the separation component 10 can be adjusted along the axial direction of the calendering roller, i.e., the axial direction of the active roller. For different battery electrodes, when there are positional differences in the foil area, the position of the separation component 10 can be adjusted to adapt to the calendering rollers at different positions, thereby improving the versatility of the roll pressing and stretching mechanism.

[0061] In some embodiments of this disclosure, each calendering wheel is fitted with a wheel surface cleaning device. It should be noted that the lateral dimension of the separation component 10 in the wheel surface cleaning device is larger than the wheel surface width of the calendering wheel, so that the wheel surface cleaning device can adapt to calendering wheels with different wheel surface sizes. For battery electrode sheets with small differences in foil area position, after the axial position of the calendering wheel is adjusted, the wheel surface cleaning device does not need to be adjusted to meet the requirements of calendering wheel surface cleaning, making the production process of the roll forming and stretching mechanism easier to operate and improving the economy of the production process.

[0062] The terms "first," "second," "left side," and "right side," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may not be defined in the listed steps or units, but may include steps or units not listed.

[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wheel surface cleaning device, characterized in that, include: The separation component (10) is attached to the wheel surface (610) of the target wheel (60), and the separation component (10) covers the wheel surface (610) of the target wheel (60) in the axial direction. The collection component (20) includes a collection cavity (210) and a guide area (220). The entrance of the guide area (220) is located at the bottom of the area where the separation component (10) and the target wheel (60) are in contact. The guide area (220) has an opening at its lowest horizontal height and is connected to the negative pressure component. The collection cavity (210) is a cavity with an opening on one side facing the separation component (10). The height of the collection cavity (210) is higher than that of the guide area (220), and the guide area (220) is at least partially located inside the collection cavity (210).

2. The wheel surface cleaning device as described in claim 1, characterized in that, It also includes a mounting bracket (30), on which the separation component (10) is mounted.

3. The wheel surface cleaning device as described in claim 2, characterized in that, The separation component (10) is a scraper (110) and is fixedly mounted on the mounting bracket (30).

4. The wheel surface cleaning device as described in claim 3, characterized in that, The scraper (110) has a single-sided blade (1110) structure. The collection chamber (210) and the guide area (220) are arranged facing the blade (1110), and the blade (1110) is arranged facing the rotation direction of the target wheel (60).

5. The wheel surface cleaning device as described in claim 2, characterized in that, The separation component (10) is a brush, which is rotatably mounted on the mounting bracket (30) at both ends along its axial direction, and the rotation direction of the brush is opposite to the rotation direction of the target wheel (60).

6. The wheel surface cleaning device as described in claim 1, characterized in that, The guide area (220) includes an upper bottom surface (2210) and a lower bottom surface (2220) spaced apart in the vertical direction. The cross-section of the guide area (220) in the vertical direction has a contraction structure from the upper bottom surface (2210) to the lower bottom surface (2220). The upper bottom surface (2210) is open and located close to the separation component (10), and the lower bottom surface (2220) is open and connected to the negative pressure component.

7. The wheel surface cleaning device as described in claim 6, characterized in that, The guide area (220) has a cross-section in the horizontal direction that varies uniformly linearly or continuously in an arc shape.

8. The wheel surface cleaning device as described in claim 2, characterized in that, The mounting bracket (30) is slidably disposed on the base (40), and the mounting bracket (30) drives the separation component (10) to fit against and separate from the wheel surface (610) of the target wheel (60) on its sliding path.

9. The wheel surface cleaning device as described in claim 8, characterized in that, The mounting bracket (30) and / or the separation assembly (10) abut against a compressed spring (50), the separation assembly (10) pressing against the wheel surface (610) of the target wheel (60); the axis of the spring (50) is parallel to the sliding direction of the mounting bracket (30) along the base (40).

10. The wheel surface cleaning device as described in claim 9, characterized in that, Two sets of springs (50) are arranged at a lateral interval along the separation component (10), and the distance L1 between the two sets of springs (50) is 0.5-1 of the lateral dimension L2 of the separation component (10).

11. The wheel surface cleaning device as described in claim 8, characterized in that, It also includes a drive assembly, the output end of which is connected to the mounting bracket (30) to drive the mounting bracket (30) to slide along the base (40); the drive assembly has a first drive position that drives the mounting bracket (30) to engage the separation assembly (10) with the wheel surface (610) of the target wheel (60), and a second drive position that drives the mounting bracket (30) to engage the separation assembly (10) away from the wheel surface (610) of the target wheel (60).

12. The wheel surface cleaning device as described in claim 1, characterized in that, An observation window (2110) is provided on at least one side wall of the collection chamber (210) and is sealed with a transparent material.

13. A roll forming and stretching mechanism, characterized in that, It includes an active roller and a calendering wheel for performing the rolling action of the foil area on the battery electrode sheet, and also includes a wheel surface cleaning device as described in any one of claims 1-12, the wheel surface cleaning device being disposed on the active roller and / or the calendering wheel, and the separation component (10) covering the working area of ​​the calendering wheel.

14. The roll forming and stretching mechanism as described in claim 13, characterized in that, The separation component (10) is arranged to move along the axial direction of the calendering wheel.

15. The roll forming and stretching mechanism as described in claim 13, characterized in that, The calender is fitted with the wheel surface cleaning device, and the lateral dimension of the separation component (10) in the wheel surface cleaning device is greater than the wheel surface width of the calender.

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