Winding needle cleaning device and winding machine

Abstract

The application provides a winding needle cleaning device and a winding machine. The winding needle cleaning device comprises a support, a dust removal assembly and a negative pressure assembly. The dust removal assembly is connected to the support and has a dust suction channel. The negative pressure assembly is connected to an outlet end of the dust suction channel. An inlet end of the dust suction channel is provided in the form of a slit. Non-contact cleaning of the winding needle by the dust removal assembly using negative pressure is achieved. The winding needle can be quickly and comprehensively cleaned. The winding needle cleaning efficiency is improved. Contact wear between the dust removal assembly and the winding needle is avoided. The winding quality and production stability of cylindrical batteries are improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery production technology. Specifically, this utility model relates to a needle cleaning device and a winding machine. Background Technology

[0002] In the production process of cylindrical batteries, the cylindrical cells are wound by rotating the winding needles of a winding machine. However, when the cells are wound by the winding needles, the coating on the cell separator adheres to the surface of the winding needles, causing the separator inside the cell to be carried out when the winding needles are pulled out of the cell.

[0003] To avoid the aforementioned problems, relevant fields use manual wiping of the winding needles to ensure their surface is clean and smooth. However, direct contact between the wiping head and the winding needle can easily lead to wear of the wiping head after prolonged wiping operations, increasing cleaning costs. At the same time, direct contact between the wiping head and the winding needle can also damage the winding needle, affecting its service life and winding accuracy, thus restricting the production efficiency of cylindrical batteries. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for a needle cleaning device and a winding machine.

[0005] According to a first aspect of the present invention, a needle cleaning device is provided, comprising:

[0006] Support, dust removal components and negative pressure components;

[0007] The dust removal assembly is connected to the support and has a dust suction channel;

[0008] The negative pressure component is connected to the outlet end of the suction channel, and the inlet end of the suction channel is configured as a slit.

[0009] Optionally, the dust removal assembly includes a guide and a dust removal component, the guide being slidably engaged with the support; the dust suction channel includes a first sub-dust suction channel, the first sub-dust suction channel being located within the guide and connecting a first end and a second end of the guide, the dust removal component being connected to the first end of the guide, and the negative pressure assembly being connected to the second end of the guide.

[0010] Optionally, the suction channel includes a second sub-suction channel, which is located inside the dust removal component and connects the dust removal surface and the mounting surface of the dust removal component. The inlet end of the suction channel is located on the dust removal surface, and the guide is connected to the mounting surface of the dust removal component and connects the first sub-suction channel and the second sub-suction channel.

[0011] Optionally, the second sub-dust suction channel includes a slit inlet, a buffer chamber, and a mounting hole. The buffer chamber is disposed inside the dust removal component. The slit inlet connects the dust removal surface of the dust removal component and the buffer chamber to form the inlet end of the dust suction channel. The mounting hole connects the buffer chamber and the mounting surface of the dust removal component and is used to connect the guide member.

[0012] Optionally, in the direction from the slit inlet to the mounting hole, at least a portion of the cross-sectional area of ​​the buffer cavity gradually increases.

[0013] Optionally, the dust removal assembly further includes a dust removal hood, which surrounds the edge of the dust removal surface of the dust removal component.

[0014] Optionally, it also includes a drive assembly disposed on the support and used to drive the dust removal assembly to slide along the support.

[0015] According to a second aspect of the present invention, a winding machine is provided, the winding machine comprising a winding needle and the winding needle cleaning device described in the first aspect;

[0016] The entrance end of the suction channel faces the coil needle.

[0017] Optionally, the dust removal assembly has an avoidance position and a dust removal position;

[0018] When the dust removal component is in the avoidance position, the dust removal component is spaced apart from the winding needle by a first distance; when the dust removal component is in the dust removal position, the dust removal component is spaced apart from the winding needle by a second distance, the second distance being less than the first distance.

[0019] Optionally, the inlet end of the dust suction channel is a slit inlet, and the length direction of the slit inlet is parallel to the axial direction of the coil needle.

[0020] One technical advantage of this utility model is:

[0021] This application provides a needle cleaning device, which includes a support, a dust removal component, and a negative pressure component. The dust removal component is connected to the support and has a suction channel. The negative pressure component is connected to the outlet end of the suction channel. The inlet end of the suction channel is set in a slit shape, which realizes non-contact cleaning of the needle by the dust removal component using negative pressure. This enables the needle to be cleaned quickly and thoroughly, improves the needle cleaning efficiency, avoids contact wear between the dust removal component and the needle, and improves the winding quality and production stability of cylindrical batteries.

[0022] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0024] Figure 1 A schematic diagram of a dust removal component provided in one embodiment of the present utility model;

[0025] Figure 2 for Figure 1 Cross-sectional view along plane AA;

[0026] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0027] Figure 4 A perspective view of a needle cleaning device provided in one embodiment of the present invention;

[0028] Figure 5 A front view of a needle cleaning device provided in one embodiment of the present invention;

[0029] Figure 6 This is a side view of a needle cleaning device provided in one embodiment of the present invention.

[0030] The components are as follows: 100, needle cleaning device; 1, support; 11, guide hole; 2, drive assembly; 3, dust removal assembly; 31, guide component; 32, dust removal component; 321, dust removal surface; 322, mounting surface; 33, dust hood; 34, suction channel; 341, first sub-suction channel; 342, second sub-suction channel; 3421, slit entrance; 3422, buffer chamber; 3423, assembly hole;

[0031] 200, winding needle; 300, negative pressure assembly. Detailed Implementation

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0033] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0034] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0038] Reference Figure 1 , Figure 2 and Figure 5 This application provides a needle cleaning device 100, which includes a support 1, a dust removal component 3 and a negative pressure component 300.

[0039] The dust removal component 3 is connected to the support 1 and has a dust suction channel 34. The negative pressure component 300 is connected to the outlet end of the dust suction channel 34, and the inlet end of the dust suction channel 34 is set in a slit shape.

[0040] In the above embodiment, the support 1 provides a supporting structure for the entire needle cleaning device 100, providing a stable installation position and space for other components such as the dust removal component 3 and the negative pressure component 300. This ensures that each component maintains a relatively fixed positional relationship during device operation, thus stabilizing the entire device structure. By firmly fixing the dust removal component 3 to the support 1, the dust removal component 3 can maintain a stable working posture when cleaning the needles, ensuring that it will not shift or shake due to external forces or its own vibration during operation. This guarantees the accuracy and consistency of cleaning, improves the cleaning effect, and enhances the reliability of the device.

[0041] In the above embodiment, a dust collection channel 34 is formed inside the dust collection component 3 for dust to flow after adsorption. The dust collection channel 34 provides a clear path for the intake and transmission of dust, so that dust can be guided from the surface of the needle 200 into the dust collection component 3, which facilitates the collection of dust.

[0042] See Figure 4 The negative pressure component 300 creates negative pressure within the suction channel 34, accurately directing the inlet end of the suction channel 34 toward the needle 200. This allows dust on the surface of the needle 200 to be directly sucked into the suction channel 34 under negative pressure. Utilizing negative pressure to clean the dust on the surface of the needle 200 ensures targeted and effective cleaning. Furthermore, the dust removal component 300 can clean the needle 200 without contacting it. Compared to traditional contact cleaning, this non-contact cleaning method avoids friction caused by contact, thereby reducing damage to the surface of the needle 200, extending the lifespan of the needle, and also reducing wear on cleaning tools such as the wiping head caused by contact.

[0043] In addition, the non-contact cleaning method between the dust removal component 3 and the winding needle 200 makes the cleaning process more stable and reliable. It will not affect the cleaning effect due to uneven contact force and other issues. It can remove dust from the surface of the winding needle 200 more evenly and ensure the cleanliness of the surface of the winding needle 200.

[0044] In the above embodiments, see Figure 5 and Figure 6 Utilizing the rotation and axial movement of the coil needle 200 (e.g.) Figure 6 (Moving in the direction of the middle arrow) works in conjunction with the dust removal component 3 to remove dust from the surface of the winding needle 200, ensuring that all parts of the winding needle 200 surface are fully exposed to the suction range of the dust removal component 3. Through the dynamic coordination of the winding needle 200, it is ensured that every area of ​​the winding needle 200 surface is effectively cleaned, avoiding the appearance of cleaning dead corners, achieving a comprehensive and thorough cleaning of the winding needle 200, and improving the efficiency and quality of the cleaning of the winding needle 200.

[0045] See Figure 4The negative pressure component 300 works in conjunction with the dust removal component 3 to generate suction and remove the dust generated by the dust removal component 3 during the cleaning of the needle 200. This prevents dust from spreading inside the device and in the surrounding environment, maintaining a clean working environment and improving cleaning efficiency, while also preventing dust from re-adhering to the needle 200. Specifically, the suction generated by the negative pressure component 300 acts directly on the suction channel 34, allowing the dust in the suction channel 34 to be smoothly drawn into the waste collection area of ​​the negative pressure component 300 under the action of airflow. This ensures that dust can be efficiently and smoothly transferred from the dust removal component 3 to the negative pressure component 300, achieving continuity and effectiveness of the dust collection and processing function of the entire needle cleaning device 100.

[0046] Meanwhile, the inlet end of the slit-shaped suction channel 34 can extend along the length of the suction object such as the coil needle, so as to simultaneously adsorb dust from different positions of the suction object, expand the suction coverage, and ensure that dust on all parts of the surface of the suction object such as the coil needle 200 can be effectively sucked in. This enables the coil needle 200 to be cleaned quickly and comprehensively, improves the efficiency of coil needle cleaning, ensures the cleanliness of the surface of the coil needle 200, and improves the winding quality and production stability of cylindrical batteries.

[0047] In some embodiments, see Figure 1 and Figure 2 The dust removal component 3 includes a guide 31 and a dust removal component 32. The guide 31 is slidably engaged with the support 1. The dust suction channel 34 includes a first sub-dust suction channel 341. The first sub-dust suction channel 341 is located inside the guide 31 and connects the first end and the second end of the guide 31. The dust removal component 32 is connected to the first end of the guide 31, and the negative pressure component 300 is connected to the second end of the guide 31.

[0048] In the above embodiment, the first end of the guide member 31 can be the end of the guide member 31 facing the winding needle 200, and the second end of the guide member 31 can be the end of the guide member 31 away from the winding needle 200. The first sub-dust suction channel 341 is located inside the guide member 31, achieving structural integration, saving additional space, and making the entire dust removal assembly 3 more compact. This facilitates the layout and installation of the dust removal assembly within a limited production space. The first sub-dust suction channel 341 connects the first end and the second end of the guide member 31, providing a stable and direct channel for the dust suction airflow. This allows the dust airflow to smoothly flow in from one end of the guide member 31 and out from the other end after passing through the first sub-dust suction channel 341, reducing resistance loss and turbulence during airflow transmission and improving dust suction efficiency.

[0049] Specifically, when the dust removal component 32 cleans the surface of the needle 200, the dust generated during cleaning can be sucked into the first sub-suction channel 341 located at the first end of the guide component 31, achieving a seamless connection between cleaning and suction functions, improving cleaning efficiency, and preventing dust from spreading and causing secondary pollution around the needle 200. The second end of the guide component 31 is connected to the negative pressure component 300, which provides a power source for the dust removal component 3. The negative pressure component 300 generates negative pressure within the first sub-suction channel 341 inside the guide component 31, thereby forming a suction airflow. This allows the dust on the surface of the needle 200 to be smoothly sucked in and transported to the negative pressure component 300 for processing, ensuring the efficiency and stability of suction.

[0050] In some embodiments, see Figure 1 and Figure 2 The suction channel 34 includes a second sub-suction channel 342, which is located inside the dust removal component 32 and connects the dust removal surface 321 and the mounting surface 322 of the dust removal component 32. The inlet end of the suction channel 34 is located on the dust removal surface 321. The guide 31 is connected to the mounting surface 322 of the dust removal component 32 and connects the first sub-suction channel 341 and the second sub-suction channel 342.

[0051] In the above embodiment, the dust-collecting surface 321 of the dust collector 32 can be the side of the dust collector 32 facing the winding needle 200, and the mounting surface 322 of the dust collector 32 can be the side of the dust collector 32 facing away from the winding needle 200. The second sub-dust suction channel 342 is disposed inside the dust collector 32 and connects the dust-collecting surface 321 and the mounting surface 322 of the dust collector 32. This allows the dust adsorbed or cleaned from the dust-collecting surface 321 to be quickly transported towards the mounting surface 322 through the second sub-dust suction channel 342. This design shortens the dust transport path, reduces dust residue on the surface of the dust collector and the possibility of secondary dust generation, and improves the timeliness and effectiveness of dust collection.

[0052] See Figure 2 The guide member 31 is connected to the mounting surface 322 of the dust removal member 32, and the first sub-dust suction channel 341 and the second sub-dust suction channel 342 are connected. This allows dust to enter the second sub-dust suction channel 342 from the inlet end of the dust removal surface 321, and then be transferred to the subsequent negative pressure component 300 through the first sub-dust suction channel 341 in the guide member 31. This achieves smooth transmission of dust from generation to collection, ensuring the continuity and integrity of the dust suction function.

[0053] In some embodiments, see Figure 3The second sub-dust suction channel 342 includes a slit inlet 3421, a buffer chamber 3422, and a mounting hole 3423. The buffer chamber 3422 is disposed inside the dust removal component 32. The slit inlet 3421 connects the dust removal surface 321 of the dust removal component 32 and the buffer chamber 3422 to form the inlet end of the dust suction channel 34. The mounting hole 3423 connects the buffer chamber 3422 and the mounting surface 322 of the dust removal component 32 and is used to connect the guide component 31.

[0054] In the above embodiment, a slit inlet 3421 is provided on the dust removal surface 321 of the dust removal component 32, which can increase the dust collection area and efficiency. When the dust removal component 32 cleans the surface of the brush 200, the slit inlet 3421 can extend along the length of the dust collection object such as the brush, so as to simultaneously absorb dust from different positions of the dust collection object, expand the dust collection coverage, ensure that dust from all parts of the surface of the brush 200 can be effectively sucked in, improve the comprehensiveness and uniformity of cleaning, and reduce dust residue on the brush 200.

[0055] Furthermore, the slit-shaped inlet 3421 helps to create a more uniform and stable airflow. Airflow enters the suction channel through the slit inlet 3421, which ensures the airflow is evenly distributed along its length, preventing localized areas of excessively strong or weak airflow. This uniform airflow generates a stable and strong suction force, ensuring that dust on the surface of the needle is effectively adsorbed into the suction channel, improving the reliability of the suction process.

[0056] See Figure 3 The buffer chamber 3422 is located inside the dust collection component 32 and can stabilize the airflow. When dust enters the second sub-dust collection channel 342 through the slit inlet 3421, the airflow speed and pressure may fluctuate. The buffer chamber 3422 can provide a buffer space for the airflow, so that the airflow is evenly mixed and stabilized in the chamber, reducing the turbulence and impact of the airflow, ensuring the smooth operation of the dust collection process, and improving the stability and reliability of the dust collection system.

[0057] See Figure 2 and Figure 3 The mounting hole 3423 connects the buffer chamber 3422 and the first sub-dust suction channel 341 inside the guide member 31, forming a complete dust suction path with the second sub-dust suction channel 342 and the first sub-dust suction channel 341. After passing through the buffer chamber 3422, dust can enter the first sub-dust suction channel inside the guide member 31 through the mounting hole 3423 and is finally transported to the subsequent negative pressure assembly 300, ensuring the continuity and integrity of the dust suction process.

[0058] In some embodiments, the mounting hole 3423 is used to connect the guide member 31, providing a stable connection point between the dust collector 32 and the guide member 31. For example, by means of bolt connection or snap-fit ​​connection, the guide member 31 can be firmly installed on the mounting surface 322 of the dust collector 32, ensuring the structural stability and operational reliability of the entire dust collector assembly 3.

[0059] In some embodiments, see Figure 3 In the direction from the slit inlet 3421 to the assembly hole 3423, the cross-sectional area of ​​at least part of the buffer cavity 3422 gradually increases.

[0060] In one embodiment, the cross-sectional area of ​​the entire buffer cavity 3422 can gradually increase from the slit inlet 3421 to the mounting hole 3423 to guide the airflow into the first sub-vacuum channel 341 along the direction of increasing cross-sectional area of ​​the buffer cavity 3422. This allows the airflow to enter the first sub-vacuum channel 341 more smoothly, reducing energy loss during the entry process and improving vacuuming efficiency. Simultaneously, it also prevents backflow or eddies from occurring when the airflow enters the buffer cavity 3422, ensuring the normal operation of the vacuuming process.

[0061] In another embodiment, such as Figure 3 As shown, the buffer chamber 3422 includes a first buffer section and a second buffer section. The first buffer section connects to the slit inlet 3421, and the second buffer section connects to the assembly hole 3423. In the direction from the slit inlet 3421 to the assembly hole 3423, the cross-sectional area of ​​the first buffer section gradually increases, effectively reducing the velocity of the high-speed airflow entering from the slit inlet 3421. This makes the movement of dust in the airflow relatively slow, which is beneficial for dust to settle and accumulate in the first buffer section, improving dust collection efficiency. Meanwhile, the cross-sectional area of ​​the second buffer section remains unchanged, keeping the airflow in a relatively stable state within the second buffer section.

[0062] In some embodiments, see Figure 5 The dust removal assembly 3 also includes a dust removal hood 33, which surrounds the edge of the dust removal surface 321 of the dust removal component 32.

[0063] In the above embodiment, when the dust removal component 32 cleans the surface of the coil needle 200, a certain amount of dust is generated. The dust removal hood 33 surrounds the edge of the dust removal surface 321, forming a relatively enclosed space that isolates the dust removal area from the surrounding environment. This effectively prevents dust from spreading to the surroundings during the cleaning process, avoids dust contamination of other parts of the equipment and the production environment, reduces subsequent cleaning work, and improves production efficiency and product quality.

[0064] In some embodiments, see Figure 4The needle cleaning device 100 also includes a drive assembly 2, which is disposed on the support 1 and is used to drive the needle to slide along the support 1.

[0065] In the above embodiments, mounting the drive assembly 2 on the support 1 ensures the stability of the drive assembly 2 during operation. The support 1 typically has sufficient strength and rigidity to withstand various forces and vibrations generated during the operation of the drive assembly 2, reducing malfunctions caused by the shaking or displacement of the drive assembly 2, and ensuring that the drive assembly 2 can continuously and stably provide power to the dust removal assembly 3.

[0066] When the winding needle 200 does not require cleaning, the drive assembly 2 slides the dust removal assembly 3 along the support 1 to a clearance position, keeping the dust removal assembly 3 away from the winding needle to avoid interfering with the normal rotation of the winding needle 200 and ensuring the smooth progress of the battery cell winding process. When cleaning of the winding needle 200 is required, the drive assembly 2 drives the dust removal assembly 3 to a dust removal position, allowing the dust removal assembly 3 to accurately approach the surface of the winding needle 200 for effective cleaning, improving the efficiency and quality of the cleaning process. This embodiment of the application uses the drive assembly 2 to flexibly switch the dust removal assembly 3 between the clearance position and the dust removal position, allowing the working state of the dust removal assembly 3 to be adjusted at any time according to actual production needs and the cleaning status of the winding needle.

[0067] In some embodiments, see Figure 4 The support 1 has a guide hole 11. The dust removal assembly 3 includes a guide 31 and a dust removal component 32. The guide 31 is connected to the drive assembly 2 and slides in cooperation with the guide hole 11. The dust removal component 32 is connected to the end of the guide 31 facing the winding needle 200.

[0068] In the above embodiment, the guide hole 11 on the support 1 provides precise path guidance for the movement of the dust removal component 3. The guide hole 11 defines the movement trajectory of the dust removal component 3 on the support 1, ensuring that the dust removal component 3 moves in a straight line along the direction set by the guide hole 11. This ensures the accuracy and stability of the dust removal component 3 when switching between the avoidance position and the dust removal position, which helps to improve the overall accuracy of the needle cleaning device 100. It enables the dust removal component 32 to accurately approach the surface of the needle 200 for dust suction, avoiding incomplete cleaning or damage to the needle 200 due to positional deviation. At the same time, the guide hole 11 also constrains the dust removal component 3, preventing it from shaking or shifting during movement, thus enhancing the reliability of the device operation.

[0069] This application embodiment also provides a winding machine, which includes a winding needle 200 and the above-described winding needle cleaning device 100;

[0070] The inlet end of the suction channel 34 faces the coil needle 200.

[0071] In the above embodiment, the dust removal component 3 of the needle cleaning device 100 is connected to the support 1 and has a dust suction channel 34. The negative pressure component 300 is connected to the outlet end of the dust suction channel 34. The inlet end of the dust suction channel 34 is set in a slit shape, which enables the needle 200 to be cleaned quickly and thoroughly, improving the efficiency of needle cleaning, ensuring the cleanliness of the surface of the needle 200, and improving the winding quality and production stability of the cylindrical battery.

[0072] In some embodiments, the dust removal component 3 has an avoidance position and a dust removal position;

[0073] When the dust removal component 3 is in the avoidance position, the dust removal component 3 and the winding needle 200 are spaced apart by a first distance. When the dust removal component 3 is in the dust removal position, the dust removal component 3 and the winding needle 200 are spaced apart by a second distance, which is less than the first distance.

[0074] In the above embodiments, the dust removal component 3 can be switched between an avoidance position and a dust removal position using a drive component. For example, when the winding needle 200 is performing a winding operation, the dust removal component 3 is in the avoidance position to avoid interfering with the winding process; while when the winding needle 200 needs to be cleaned, the dust removal component 3 switches to the dust removal position to ensure that the cleaning operation of the winding needle 200 can be carried out smoothly.

[0075] When the dust removal component 3 is in the avoidance position, it maintains a first distance from the winding needle 200, providing ample space for the rotation and axial movement of the winding needle 200 during winding operations. This avoids collisions and interference between the dust removal component 3 and the winding needle 200 during movement, ensuring that the winding process of the winding needle 200 can proceed stably and smoothly, thus improving the winding efficiency of the battery cell and the product quality.

[0076] When the dust removal component 3 switches to the dust removal position, the distance between the dust removal component 3 and the brush head 200 is reduced to the second distance. This smaller distance allows the dust removal component 3 to get closer to the surface of the brush head 200, enhancing the suction channel 34's ability to adsorb dust from the surface of the brush head 200. The negative pressure within the suction channel 34, at this closer distance, more effectively draws dust from the brush head 200 into the suction channel 34, thereby improving the cleaning efficiency and quality of the brush head 200 and ensuring that its surface is quickly and thoroughly cleaned.

[0077] In some embodiments, see Figure 1 and Figure 2 The guide 31 can slide in the direction of the line connecting the avoidance position and the dust removal position, and the dust removal part 32 is connected to the end of the guide 31 facing the winding needle 200.

[0078] In the above embodiments, the guide member 31 can slide along the guide hole 11 or the slide groove, allowing the dust removal component 3 to accurately switch between the avoidance position and the dust removal position. By controlling the sliding distance and direction of the guide member 31, it can be ensured that the dust removal component 3 quickly and accurately reaches the designated position, meeting the positional requirements of the dust removal component 3 at different stages of the production process. For example, when the winding needle 200 is in the winding operation, the guide member 31 drives the dust removal component 3 to slide to the avoidance position to prevent the dust removal component 3 from interfering with the winding needle and the battery cell during the winding process; when it is necessary to clean the winding needle 200, the guide member 31 then slides the dust removal component 3 to the dust removal position to facilitate the cleaning of the winding needle 200 by the dust removal component 3.

[0079] By connecting the dust removal component 32 to the end of the guide component 31 facing the winding needle 200, the dust removal component 32 can move closer to or further away from the winding needle 200 as the guide component 31 slides. This ensures that when in the dust removal position, the dust removal component 32 is accurately within the effective range for cleaning the surface of the winding needle 200, making the relative positional relationship between the dust removal component 32 and the winding needle 200 more compact and fully utilizing the cleaning function of the dust removal component 32.

[0080] In some embodiments, see Figure 6 The entrance end of the dust suction channel 34 is a slit entrance 3421, and the length direction of the slit entrance 3421 is parallel to the axis of the coil needle 200.

[0081] In the above embodiment, the length direction of the slit inlet 3421 can be... Figure 6 As shown in the diagram, the axial direction of the coil needle 200 is also... Figure 6 As shown in the diagram, setting the length direction of the slit inlet 3421 to be parallel to the axis of the winding needle 200 allows the slit inlet 3421 to cover more surface areas of the winding needle, ensuring that dust from more parts of the surface of the winding needle 200 can be effectively sucked in, improving the comprehensiveness and consistency of cleaning, thereby improving the quality of subsequent cylindrical battery winding processes and reducing battery quality problems caused by unclean winding needle surfaces.

[0082] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A needle cleaning device, characterized in that, include: Support (1), dust removal assembly (3) and negative pressure assembly (300); The dust removal assembly (3) is connected to the support (1) and has a dust suction channel (34); The negative pressure component (300) is connected to the outlet end of the suction channel (34), and the inlet end of the suction channel (34) is configured as a slit.

2. The needle cleaning device according to claim 1, characterized in that, The dust removal assembly (3) includes a guide (31) and a dust removal component (32). The guide (31) is slidably engaged with the support (1). The dust suction channel (34) includes a first sub-dust suction channel (341). The first sub-dust suction channel (341) is located inside the guide (31) and connects the first end and the second end of the guide (31). The dust removal component (32) is connected to the first end of the guide (31). The negative pressure assembly (300) is connected to the second end of the guide (31).

3. The needle cleaning device according to claim 2, characterized in that, The suction channel (34) includes a second sub-suction channel (342), which is located inside the dust removal component (32) and connects the dust removal surface (321) and the mounting surface (322) of the dust removal component (32). The inlet end of the suction channel (34) is located on the dust removal surface (321). The guide (31) is connected to the mounting surface (322) of the dust removal component (32) and connects the first sub-suction channel (341) and the second sub-suction channel (342).

4. The needle cleaning device according to claim 3, characterized in that, The second sub-dust suction channel (342) includes a slit inlet (3421), a buffer chamber (3422), and a mounting hole (3423). The buffer chamber (3422) is disposed inside the dust removal component (32). The slit inlet (3421) connects the dust removal surface (321) of the dust removal component (32) and the buffer chamber (3422) and forms the inlet end of the dust suction channel (34). The mounting hole (3423) connects the buffer chamber (3422) and the mounting surface (322) of the dust removal component (32) and is used to connect the guide (31).

5. The needle cleaning device according to claim 4, characterized in that, In the direction from the slit inlet (3421) to the assembly hole (3423), the cross-sectional area of ​​at least a portion of the buffer cavity (3422) gradually increases.

6. The needle cleaning device according to claim 3, characterized in that, The dust removal assembly (3) also includes a dust removal hood (33) which surrounds the edge of the dust removal surface (321).

7. The needle cleaning device according to claim 1, characterized in that, It also includes a drive assembly (2), which is disposed on the support (1) and is used to drive the dust removal assembly (3) to slide along the support (1).

8. A winding machine, characterized in that, Includes a needle coil (200) and a needle coil cleaning device (100) as described in any one of claims 1-7; The inlet end of the suction channel (34) faces the needle (200).

9. The winding machine according to claim 8, characterized in that, The dust removal component (3) has an avoidance position and a dust removal position; When the dust removal component (3) is in the avoidance position, the dust removal component (3) is spaced apart from the winding needle (200) by a first distance. When the dust removal component (3) is in the dust removal position, the dust removal component (3) is spaced apart from the winding needle (200) by a second distance, the second distance being less than the first distance.

10. The winding machine according to claim 8, characterized in that, The entrance end of the suction channel (34) is a slit entrance (3421), and the length direction of the slit entrance (3421) is parallel to the axial direction of the coil needle (200).

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