Foil cleaning structure and coating apparatus

Abstract

This utility model relates to the field of battery manufacturing technology, and more particularly to a foil cleaning structure and coating device. The foil cleaning structure includes a guide support roller, a cleaning roller, and a drive assembly. The guide support roller supports the foil, and the cleaning roller is arranged parallel to the guide support roller. The cleaning roller is connected to the output end of the drive assembly, which can drive the cleaning roller to approach the guide support roller to clamp and clean the foil, and can also drive the cleaning roller away from the guide support roller. This foil cleaning structure utilizes the cleaning roller to approach and clean the foil from the guide support roller, which helps to remove oil and dust from the foil, avoids defects in subsequent coating, and thus improves product quality and production yield. The coating device includes a coating structure and the aforementioned foil cleaning structure. The foil first passes through the foil cleaning structure and then through the coating structure. This coating device can improve product quality and production yield.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a foil cleaning structure and coating device. Background Technology

[0002] In the battery manufacturing process, foil coating is a core step. Oil or dust often accumulates on the foil surface and is difficult to detect. After coating and drying, ring-shaped defects appear where the oil or dust is located, severely impacting product quality and reducing production yield. Utility Model Content

[0003] One objective of this invention is to provide a foil cleaning structure that can improve product quality and increase production yield.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A foil cleaning structure is provided, comprising:

[0006] A guide support roller, the guide support roller being used to support the foil;

[0007] A cleaning roller, wherein the cleaning roller is arranged parallel to the guide support roller;

[0008] A drive assembly is provided, wherein the cleaning roller is connected to the output end of the drive assembly. The drive assembly is capable of driving the cleaning roller close to the guide support roller to clamp and clean the foil, and the drive assembly is also capable of driving the cleaning roller away from the guide support roller.

[0009] Optionally, the system includes two mounting brackets, with both ends of the rotating shaft of the guide support roller rotatably connected to the two mounting brackets respectively. The drive assembly includes two drive components, which are respectively mounted on the two mounting brackets. Both ends of the rotating shaft of the cleaning roller are rotatably connected to the output ends of the two drive components respectively.

[0010] Optionally, the outermost layer of the cleaning roller has a flexible layer.

[0011] Optionally, the length of the flexible layer is a along the axial direction of the cleaning roller, and the length of the guide support roller is b along the axial direction of the guide support roller, where a is greater than or equal to b.

[0012] And / or, along the axial direction of the guide support roller, the length of the guide support roller is b, and the width of the foil is c, where b is greater than or equal to c.

[0013] Optionally, it also includes a wetting component capable of wetting the flexible layer with a cleaning solution.

[0014] Optionally, the wetting assembly includes a liquid reservoir and a nozzle connected in communication, the liquid reservoir being used to store the cleaning liquid, and the nozzle being used to spray the cleaning liquid onto the flexible layer.

[0015] Optionally, the system also includes a crossbar, the extension direction of which is parallel to the extension direction of the cleaning roller, and a plurality of nozzles are provided, the plurality of nozzles being spaced apart on the crossbar.

[0016] Optionally, the cleaning roller includes a liquid storage layer located inside the flexible layer. The liquid storage layer has a cavity containing the cleaning liquid. A liquid delivery hole is formed on the side wall of the liquid storage layer near the flexible layer. The liquid delivery hole is used to allow the cleaning liquid in the cavity to permeate into the flexible layer. The flexible layer is made of porous material so that the cleaning liquid can permeate to the outer wall of the flexible layer.

[0017] Optionally, the diameter of the infusion orifice is in the range of 0.5mm-1mm;

[0018] And / or, the wetting assembly includes a liquid reservoir for storing the cleaning liquid, and the cavity communicates with the liquid reservoir;

[0019] And / or, along the radial direction of the cleaning roller, the thickness of the liquid storage layer is less than the thickness of the flexible layer.

[0020] Another objective of this invention is to provide a coating device that can improve product quality and increase production yield.

[0021] To achieve this objective, the present invention adopts the following technical solution:

[0022] A coating apparatus is provided, comprising a coating structure and the aforementioned foil cleaning structure, wherein the coating apparatus is configured such that the foil first passes through the foil cleaning structure and then through the coating structure.

[0023] The beneficial effects of this utility model are:

[0024] This invention provides a foil cleaning structure, including a guide support roller, a cleaning roller, and a drive assembly. The guide support roller supports the foil, and the cleaning roller is arranged parallel to it. The cleaning roller is connected to the output end of the drive assembly. The drive assembly can drive the cleaning roller to approach the guide support roller to clamp and clean the foil, and can also drive the cleaning roller away from the guide support roller. This foil cleaning structure utilizes the cleaning roller to approach and clean the foil from the guide support roller, which helps to remove oil and dust from the foil, avoids defects in subsequent coating, and thus improves product quality and production yield.

[0025] This invention also provides a coating apparatus, including a coating structure and the aforementioned foil cleaning structure. The coating apparatus is configured such that the foil first passes through the foil cleaning structure and then through the coating structure. This coating apparatus can improve product quality and increase production yield. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the foil cleaning structure provided in Embodiment 1 of this utility model;

[0027] Figure 2 This is a cross-sectional view of the cleaning roller provided in Embodiment 2 of this utility model.

[0028] In the picture:

[0029] 1. Guide support roller; 2. Cleaning roller; 21. Flexible layer; 22. Liquid storage layer; 221. Liquid delivery through-hole; 222. Cavity; 23. Support layer;

[0030] 3. Mounting bracket; 4. Drive component; 5. Connecting rod; 6. Mounting plate;

[0031] 100. Foil cleaning structure; 200. Foil. Detailed Implementation

[0032] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0033] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0034] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0035] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0036] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0037] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0038] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0039] Example 1

[0040] In the battery manufacturing process, foil coating is a core step. Oil or dust often accumulates on the foil surface and is difficult to detect. After coating and drying, ring-shaped defects appear where the oil or dust is located, severely impacting product quality and reducing production yield.

[0041] This embodiment provides a foil cleaning structure 100 to solve the above problems. The foil cleaning structure 100 can improve product quality and increase production yield.

[0042] like Figure 1 As shown, the foil cleaning structure 100 of this embodiment includes a guide support roller 1, a cleaning roller 2, and a drive assembly. The guide support roller 1 supports the foil 200, and the cleaning roller 2 is arranged parallel to the guide support roller 1. The cleaning roller 2 is connected to the output end of the drive assembly. The drive assembly can drive the cleaning roller 2 close to the guide support roller 1 to clamp and clean the foil 200, and can also drive the cleaning roller 2 away from the guide support roller 1.

[0043] The foil cleaning structure 100 uses a cleaning roller 2 to approach and clean the foil 200 by bringing it close to the guide support roller 1. This helps to remove oil and dust from the foil 200, avoids defects in subsequent coating, and thus improves product quality and production yield.

[0044] Optionally, the foil cleaning structure 100 further includes two mounting brackets 3, with both ends of the rotating shaft of the guide support roller 1 rotatably connected to the two mounting brackets 3 respectively. The drive assembly includes two drive components 4, which are respectively mounted on the two mounting brackets 3. Both ends of the rotating shaft of the cleaning roller 2 are rotatably connected to the output ends of the two drive components 4 respectively. Optionally, the drive component 4 is a cylinder.

[0045] Optionally, the foil cleaning structure 100 further includes connecting rods 5. Connecting rods 5 are respectively provided at both ends of the rotating shaft of the cleaning roller 2, and the connecting rods 5 are connected to the output end of the drive member 4. One end of the rotating shaft of the cleaning roller 2 is rotatably connected to a connecting block, and the connecting block is connected to the output end of one drive member 4 via the connecting rods 5. The other end of the rotating shaft of the cleaning roller 2 is rotatably connected to another connecting block, and the connecting block is connected to the output end of another drive member 4 via the connecting rods 5.

[0046] Optionally, the outermost layer of the cleaning roller 2 has a flexible layer 21. The flexible layer 21 is elastic. When the foil 200 is sandwiched between the cleaning roller 2 and the guide support roller 1, the flexible layer 21 can press against the foil 200 without damaging the foil 200. The flexible layer 21 at the point where it presses against the foil 200 will elastically deform to increase the contact area with the foil 200 and improve the cleaning effect on oil or dust on the foil 200.

[0047] Optionally, the length of the flexible layer 21 along the axial direction of the cleaning roller 2 is 'a', and the length of the guide support roller 1 along the axial direction of the guide support roller 1 is 'b', where 'a' is greater than or equal to 'b'. This helps to ensure that the guide support roller 1 abuts against the cleaning roller 2 at all points, thus ensuring that the foil 200 is cleaned at all points along its width direction by the cleaning roller 2.

[0048] Optionally, along the axial direction of the guide support roller 1, the length of the guide support roller 1 is b, and the width of the foil 200 is c, where b is greater than or equal to c. This further ensures that all parts of the foil 200 along the width direction can be cleaned by the cleaning roller 2.

[0049] Optionally, the foil cleaning structure 100 further includes a wetting component (not shown), which can wet the flexible layer 21 with a cleaning solution. The wetted flexible layer 21 can further improve the cleaning ability of the foil 200 and improve the cleaning effect.

[0050] Optionally, in this embodiment, the wetting component includes a liquid reservoir (not shown in the figure) and a nozzle (not shown in the figure) connected to each other. The liquid reservoir is used to store cleaning liquid, and the nozzle is used to spray cleaning liquid onto the flexible layer 21.

[0051] When the cleaning roller 2 is in the cleaning position, it can cooperate with the guide support roller 1 to clamp and clean the foil 200. The nozzle can be directly configured to spray cleaning liquid towards the cleaning roller 2 in the cleaning position. For example, if the guide support roller 1 is located at the bottom of the cleaning roller 2, the nozzle can spray cleaning liquid towards the top or side of the cleaning roller 2 to wet the cleaning roller 2 in real time. To prevent the cleaning liquid from being sprayed onto the foil 200, it can also be configured to move from the cleaning position to the wetting position after the cleaning roller 2 has been working for a period of time, and the nozzle can spray cleaning liquid towards the cleaning roller 2 in the wetting position. The cleaning roller 2, with the flexible layer 21 wetted, can then move back to the cleaning position to clean the foil 200.

[0052] Optionally, the foil cleaning structure 100 also includes a crossbar (not shown in the figure), with its two ends connected to two mounting brackets 3 respectively. The extension direction of the crossbar is parallel to the extension direction of the cleaning roller 2. Multiple nozzles are provided, and the multiple nozzles are spaced apart on the crossbar.

[0053] Optionally, each nozzle is connected to the liquid storage chamber of the liquid storage device via a pipeline, and a liquid pump is installed on each pipeline to draw cleaning fluid from the liquid storage device. Alternatively, a converged pipeline of multiple pipelines is connected to the liquid storage chamber of the liquid storage device, and a liquid pump is installed on the converged pipeline to control all nozzles as a whole.

[0054] Optionally, a liquid level sensor (not shown in the figure) can be installed in the liquid storage container to remind staff to add cleaning fluid in real time when the cleaning fluid is insufficient.

[0055] Alternatively, the cleaning solution can be alcohol. It is known that alcohol evaporates quickly and dries rapidly.

[0056] The foil cleaning structure 100 uses a nozzle to spray cleaning liquid onto the flexible layer 21 of the cleaning roller 2, which wets the flexible layer 21. This avoids spraying the cleaning liquid directly onto the foil 200, which would otherwise require an additional drying process. This achieves cleaning while avoiding additional processes that would reduce efficiency.

[0057] Optionally, the foil cleaning structure 100 also includes two mounting plates 6, one mounting bracket 3 mounted on one mounting plate 6 and the other mounting bracket 3 mounted on the other mounting plate 6. The mounting plates 6 are used to connect to the coating device. Optionally, the mounting bracket 3 is screwed to the mounting plate 6 to facilitate installation, maintenance, disassembly, etc.

[0058] Example 2

[0059] This embodiment discloses a foil cleaning structure 100. The difference between the foil cleaning structure 100 in this embodiment and the foil cleaning structure 100 in Embodiment 1 is that the foil cleaning structure 100 in this embodiment does not spray the cleaning liquid onto the flexible layer 21 of the cleaning roller 2, but allows the cleaning liquid to seep out from the inside to the outside of the flexible layer 21, so that the flexible layer 21, which is wetted with the cleaning liquid, can clean the foil 200.

[0060] Optionally, such as Figure 2 As shown, the cleaning roller 2 includes a liquid storage layer 22, which is located inside the flexible layer 21. The liquid storage layer 22 has a cavity 222, which contains cleaning liquid. A liquid delivery hole 221 is provided on the side wall of the liquid storage layer 22 near the flexible layer 21. The liquid delivery hole 221 is used to allow the cleaning liquid in the cavity 222 to penetrate into the flexible layer 21. The material of the flexible layer 21 has gaps so that the cleaning liquid can penetrate into the outer wall of the flexible layer 21 to clean the foil 200.

[0061] Optionally, multiple infusion through holes 221 are provided, and the multiple infusion through holes 221 are evenly spaced. Along the circumference of the cleaning roller 2, the infusion through holes 221 are evenly spaced, and along the axial direction of the cleaning roller 2, adjacent infusion through holes 221 are staggered, so that the amount of cleaning liquid impregnated in all parts of the flexible layer 21 is as balanced as possible.

[0062] Optionally, the diameter of the infusion through-hole 221 can be between 0.5mm and 1mm. If the diameter of the infusion through-hole 221 is too small, the cleaning fluid can easily clog it, making it difficult for the cleaning fluid to seep out, resulting in insufficient cleaning fluid wetting of the flexible layer 21 and affecting the cleaning effect. If the diameter of the infusion through-hole 221 is too large, the cleaning fluid flows out too quickly, and liquid can easily be squeezed out of the flexible layer 21, causing the foil 200 to become too wet. This would require an additional foil drying process, increasing costs and energy consumption and reducing production efficiency. Therefore, the diameter of the infusion through-hole 221 should be kept within the range of 0.5mm-1mm to ensure an appropriate output of cleaning fluid, good cleaning effect, and prevent the foil 200 from becoming too wet.

[0063] Optionally, the wetting assembly includes a liquid reservoir for storing cleaning fluid, and the cavity 222 is connected to the liquid reservoir. Optionally, the cavity 222 has an inlet, one end of a pipeline is connected to the inlet of the cavity 222, and the other end is connected to the liquid reservoir, and a pump is installed on the pipeline to draw cleaning fluid.

[0064] Optionally, in this embodiment, it is necessary to ensure that the cleaning roller 2 extends horizontally to prevent uneven distribution of cleaning liquid in different parts of the flexible layer 21. Therefore, the guide support roller 1 also extends horizontally accordingly.

[0065] Optionally, along the radial direction of the cleaning roller 2, the thickness of the liquid storage layer 22 is less than the thickness of the flexible layer 21 to prevent excessive outflow of cleaning liquid.

[0066] Optionally, the cleaning roller 2 also includes a support layer 23, which is located between the rotating shaft and the liquid storage layer 22. The support layer 23 is used to ensure the structural strength of the cleaning roller 2.

[0067] Apart from the above, the remaining structure of the foil cleaning structure 100 provided in this embodiment is the same as that of the foil cleaning structure 100 in Embodiment 1, and will not be described again here.

[0068] Example 3

[0069] This embodiment also provides a coating apparatus, including a coating structure and a foil cleaning structure 100 provided in Embodiment 1 or Embodiment 2. The coating apparatus is configured such that the foil 200 first passes through the foil cleaning structure 100 and then through the coating structure, so as to ensure that the foil 200 is cleaned of oil and dust at the foil cleaning structure 100 before undergoing the coating process, thereby improving product quality and increasing production yield.

[0070] Optionally, the coating apparatus further includes an unwinding structure, a web guiding structure, a drying structure, and a rewinding structure. Along the moving direction of the foil 200, the foil 200 sequentially passes through the unwinding structure, the web guiding structure, the foil cleaning structure 100, the coating structure, the drying structure, and the rewinding structure.

[0071] The unwinding structure, web guiding structure, coating structure, drying structure, and rewinding structure of the coating device are all existing technologies and will not be described in detail here.

[0072] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A foil cleaning structure, characterized in that, include: A guide support roller (1) is used to support the foil (200); A cleaning roller (2) is arranged parallel to the guide support roller (1); The cleaning roller (2) is connected to the output end of the drive assembly. The drive assembly can drive the cleaning roller (2) close to the guide support roller (1) to clamp and clean the foil (200). The drive assembly can also drive the cleaning roller (2) away from the guide support roller (1).

2. The foil cleaning structure according to claim 1, characterized in that, The system includes two mounting brackets (3), and the two ends of the rotating shaft of the guide support roller (1) are rotatably connected to the two mounting brackets (3). The drive assembly includes two drive components (4), which are respectively mounted on the two mounting brackets (3). The two ends of the rotating shaft of the cleaning roller (2) are rotatably connected to the output ends of the two drive components (4).

3. The foil cleaning structure according to claim 1, characterized in that, The outermost layer of the cleaning roller (2) has a flexible layer (21).

4. The foil cleaning structure according to claim 3, characterized in that, Along the axial direction of the cleaning roller (2), the length of the flexible layer (21) is a, and along the axial direction of the guide support roller (1), the length of the guide support roller (1) is b, where a is greater than or equal to b. And / or, along the axial direction of the guide support roller (1), the length of the guide support roller (1) is b, and the width of the foil (200) is c, where b is greater than or equal to c.

5. The foil cleaning structure according to claim 3, characterized in that, It also includes a wetting component that can wet the flexible layer (21) with a cleaning solution.

6. The foil cleaning structure according to claim 5, characterized in that, The wetting assembly includes a liquid reservoir and a nozzle connected together. The liquid reservoir is used to store the cleaning liquid, and the nozzle is used to spray the cleaning liquid onto the flexible layer (21).

7. The foil cleaning structure according to claim 6, characterized in that, It also includes a crossbar, the extension direction of which is parallel to the extension direction of the cleaning roller (2), and a plurality of nozzles are provided, the plurality of nozzles being spaced apart on the crossbar.

8. The foil cleaning structure according to claim 5, characterized in that, The cleaning roller (2) includes a liquid storage layer (22) located inside the flexible layer (21). The liquid storage layer (22) has a cavity (222) containing the cleaning liquid. The liquid storage layer (22) has a liquid delivery hole (221) on its side wall near the flexible layer (21). The liquid delivery hole (221) is used to allow the cleaning liquid in the cavity (222) to permeate to the flexible layer (21). The material of the flexible layer (21) has pores so that the cleaning liquid can permeate to the outer side wall of the flexible layer (21).

9. The foil cleaning structure according to claim 8, characterized in that, The diameter of the infusion through-hole (221) ranges from 0.5 mm to 1 mm; And / or, the wetting assembly includes a reservoir for storing the cleaning fluid, and the cavity (222) is connected to the reservoir; And / or, along the radial direction of the cleaning roller (2), the thickness of the liquid storage layer (22) is less than the thickness of the flexible layer (21).

10. A coating apparatus, characterized in that, The coating apparatus includes a coating structure and a foil cleaning structure as described in any one of claims 1-9, wherein the coating apparatus is configured such that the foil (200) passes first through the foil cleaning structure (100) and then through the coating structure.

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