Vacuum adsorption roller and coating system

Abstract

The utility model relates to a vacuum adsorption roller and a coating system, and relates to the technical field of battery production.The vacuum adsorption roller comprises a roller body and an adjusting assembly, adsorption through holes are formed in the outer surface of the roller body, the adjusting assembly comprises a transmission shaft and a moving body, the transmission shaft and the moving body are both arranged in the roller body, and an air suction notch is formed in the moving body; a vacuum adsorption area is formed between the air suction notch and the adsorption through hole, and at least part of the moving body is movably arranged on the transmission shaft in a sleeving mode in the axial direction of the transmission shaft so as to adjust the coverage range of the vacuum adsorption area. According to the vacuum adsorption roller and the coating system, the problem of vacuum pressure leakage can be effectively solved, the tension stability is improved, and the coating effect and efficiency are guaranteed.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, specifically to a vacuum adsorption roller and coating system. Background Technology

[0002] In the coating process of battery base films, vacuum adsorption rollers are used to transport the base film. These rollers play a crucial role in tension control and tension interruption during the coating process. In related technologies, the vacuum adsorption area of ​​the roller is fixed. However, during the coating process, as the width of the base film changes, the vacuum adsorption area may fail to cover the edges of the base film, leading to vacuum pressure leakage, affecting tension stability, and consequently impacting coating effectiveness and efficiency. Utility Model Content

[0003] To address the aforementioned technical problems, embodiments of this application provide a vacuum adsorption roller and coating system, which can effectively improve the problem of vacuum pressure leakage, enhance tension stability, and ensure coating effect and efficiency.

[0004] In a first aspect, a vacuum adsorption roller is provided, comprising:

[0005] The roller body has adsorption through holes on its outer surface;

[0006] An adjustment assembly includes a drive shaft and a movable body, both of which are disposed within the roller body. The movable body has an air intake notch, and a vacuum adsorption zone is formed between the air intake notch and the adsorption through hole. At least a portion of the movable body is movably sleeved on the drive shaft along the axial direction to adjust the coverage area of ​​the vacuum adsorption zone.

[0007] According to a first aspect of this application, the mobile body includes:

[0008] A bushing, fitted onto the drive shaft;

[0009] The isolation element is provided with the aforementioned air intake notch;

[0010] A connector, the two opposite ends of which are respectively connected to the bushing and the isolator.

[0011] According to a first aspect of this application, the isolation element includes:

[0012] The first partition, the outer wall of the first partition is connected to the inner wall of the roller body;

[0013] The second partition is connected to the connecting member, and the second partition slides in cooperation with the first partition along the axial direction of the drive shaft. The first partition is located between the end of the roller body and the second partition, and the outer wall of the second partition slides in cooperation with the inner wall of the roller body along the axial direction of the drive shaft.

[0014] Both the first and second partitions are provided with the air intake notch.

[0015] According to a first aspect of this application, both the first partition and the second partition are arc-shaped structures, and the outer wall of the second partition slides in conjunction with the inner wall of the first partition.

[0016] According to a first aspect of this application, the connector includes a plurality of connecting rods, each of which connects to the bushing and the spacer, and the plurality of connecting rods are distributed at circumferential intervals along the bushing.

[0017] According to a first aspect of this application, the adjustment component further includes:

[0018] The drive motor is located outside the roller body;

[0019] A transmission component is disposed outside the roller body, and the transmission component is drivingly connected to the drive motor and the transmission shaft.

[0020] According to a first aspect of this application, the number of the adjusting components is two, and the two adjusting components are arranged opposite each other along the axial direction of the roller body.

[0021] According to a first aspect of this application, the vacuum adsorption roller further includes:

[0022] An edge sensor is disposed within the roller body, and the edge sensor is used to output a signal characterizing the edge position of the base film conveyed by the roller body.

[0023] According to a first aspect of this application, the vacuum adsorption roller further includes:

[0024] A pressure sensor is disposed inside the roller body, and the pressure sensor is used to output a signal characterizing the pressure inside the roller body.

[0025] Secondly, a coating system is also provided, comprising:

[0026] Coating machine;

[0027] The vacuum adsorption roller described in the previous embodiment is used to transport the base film to the coating machine.

[0028] The vacuum adsorption roller and coating system provided in this application embodiment can adjust the coverage of the vacuum adsorption zone by controlling at least a portion of the moving body to move axially along the drive shaft when the width of the base film changes. This ensures that the vacuum adsorption zone can still cover the edge of the base film after the width change, effectively improving the problem of vacuum pressure leakage caused by the change in the width of the base film, improving tension stability, ensuring the stability of the base film during the transport process, and thus ensuring coating effect and efficiency. Attached Figure Description

[0029] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0030] Figure 1 This is a schematic diagram of the structure of a vacuum adsorption roller provided as an exemplary embodiment of this application.

[0031] Figure 2 A perspective view of a vacuum adsorption roller provided for an exemplary embodiment of this application.

[0032] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0033] Figure 4 This is a partial schematic diagram showing the interaction between a moving body and a drive shaft, provided as an exemplary embodiment of this application.

[0034] Reference numerals: 100-vacuum adsorption roller; 110-roller body; 120-adjusting component; 121-drive shaft; 122-moving body; 1221-shoulder sleeve; 1222-isolation component; 12221-first partition; 12222-second partition; 1223-suction notch; 1224-connector; 12241-connecting rod; 123-drive motor; 124-transmission component; 130-vacuum adsorption zone; 140-connecting pipe. Detailed Implementation

[0035] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0036] The coating system provided in this application embodiment may include a coating machine and a vacuum adsorption roller 100. A negative pressure can be generated inside the vacuum adsorption roller 100. Based on the principle of pressure difference, the base film can be adsorbed onto the outer surface of the vacuum adsorption roller 100. Then, by rotating, the vacuum adsorption roller 100 can move the base film forward, thereby conveying the base film to the coating machine, which can then perform coating operations on the base film. The specific coating process of the coating machine is described in related technologies and will not be repeated here.

[0037] During the actual transport of the base film, changes in the width or displacement of the base film can easily lead to the vacuum adsorption zone failing to cover the edge area of ​​the base film, causing vacuum pressure leakage, affecting tension stability, and thus impacting coating effect and efficiency. To address this, this application also provides a vacuum adsorption roller 100, which can improve the problem of vacuum pressure leakage, enhance tension stability, and ensure coating effect and efficiency. The vacuum adsorption roller 100 is described in detail below.

[0038] Figure 1 This is a schematic diagram of the structure of a vacuum adsorption roller provided as an exemplary embodiment of this application. Figure 2 A perspective view of a vacuum adsorption roller provided for an exemplary embodiment of this application. Figure 3 for Figure 2 Enlarged diagram of point A in the middle. Figure 4 This is a partial schematic diagram illustrating the engagement of a moving body with a drive shaft, as provided in an exemplary embodiment of this application. Figures 1 to 4 As shown, the aforementioned vacuum adsorption roller 100 may include a roller body 110. The outer surface of the roller body 110 is provided with adsorption through holes. When a negative pressure is formed inside the roller body 110, the roller body 110 can adsorb the base film through the adsorption through holes. Then, the roller body 110 can transport the base film by rotating itself.

[0039] like Figures 1 to 4 As shown, the aforementioned vacuum adsorption roller 100 may also include an adjustment component 120. The adjustment component 120 may include a movable body 122. The movable body 122 is disposed inside the roller body 110. The movable body 122 is provided with an air intake notch 1223. A vacuum adsorption zone 130 is formed between the air intake notch 1223 and the aforementioned adsorption through hole.

[0040] Specifically, in practical applications, the vacuum adsorption roller 100 may also include a connecting pipe 140, which is connected to the inner cavity of the roller body 110. The vacuum pump can extract air from the inner cavity of the roller body 110 through the connecting pipe 140. After the air in the inner cavity of the roller body 110 is extracted, the negative pressure in the inner cavity can adsorb the base film attached to the outer surface of the roller body 110 through the suction notch 1223 and the adsorption through hole. That is, a vacuum adsorption zone 130 is formed between the suction notch 1223 and the adsorption through hole. The vacuum adsorption zone 130 can generate adsorption force for adsorbing the base film.

[0041] like Figures 1 to 4 As shown, the adjustment assembly 120 may also include a drive shaft 121, which is disposed inside the roller body 110. At least a portion of the movable body 122 is movably sleeved on the drive shaft 121 along the axial direction of the drive shaft 121. Thus, as at least a portion of the movable body 122 moves along the axial direction of the drive shaft 121, at least a portion of the suction notch 1223 also moves along the axial direction of the drive shaft 121, thereby achieving the purpose of adjusting the coverage area of ​​the vacuum adsorption zone 130.

[0042] It should be noted that "at least a portion of the moving body 122 moves along the axial direction of the drive shaft 121" may include a portion of the moving body 122 being stationary relative to the drive shaft 121, while another portion of the moving body 122 can move along the axial direction of the drive shaft 121; or, the entire moving body 122 can move along the axial direction of the drive shaft 121.

[0043] It should be noted that "adjusting the coverage area of ​​the vacuum adsorption zone 130" may include increasing the coverage area of ​​the vacuum adsorption zone 130 (e.g., increasing the distance between the two relative boundaries of the vacuum adsorption zone 130 along the axial direction of the drive shaft 121), decreasing the coverage area of ​​the vacuum adsorption zone 130 (e.g., decreasing the distance between the two relative boundaries of the vacuum adsorption zone 130 along the axial direction of the drive shaft 121), or moving the position of the entire vacuum adsorption zone 130 (e.g., moving the two relative boundaries of the vacuum adsorption zone 130 along the axial direction of the drive shaft 121 synchronously along the axial direction of the drive shaft 121), etc.

[0044] by Figure 3 Taking the directions indicated by arrows B and C as an example, representing the axial direction of the drive shaft 121, the aforementioned "increase in the distance between the two relative boundaries of the vacuum adsorption region 130 along the axial direction of the drive shaft 121" can include the vacuum adsorption region 130 moving relatively away from the two relative boundaries along the axial direction of the drive shaft 121 in the directions indicated by arrows B and C, respectively, to increase the distance; or, the position of the left boundary of the vacuum adsorption region 130 along the axial direction of the drive shaft 121 remains unchanged, while the right boundary moves in the direction indicated by arrow C, to increase the distance; or, the position of the right boundary of the vacuum adsorption region 130 along the axial direction of the drive shaft 121 remains unchanged, while the left boundary moves in the direction indicated by arrow B, to increase the distance.

[0045] Similarly, the aforementioned "reduction of the distance between the two relative boundaries of the vacuum adsorption region 130 along the axial direction of the drive shaft 121" may include the vacuum adsorption region 130 moving relatively closer to the two relative boundaries along the axial direction of the drive shaft 121 in the directions indicated by arrows B and C, respectively, to reduce the distance; or, the position of the left boundary of the vacuum adsorption region 130 along the axial direction of the drive shaft 121 remains unchanged, while the right boundary moves in the direction indicated by arrow B, to reduce the distance; or, the position of the right boundary of the vacuum adsorption region 130 along the axial direction of the drive shaft 121 remains unchanged, while the left boundary moves in the direction indicated by arrow C, to reduce the distance.

[0046] Similarly, the aforementioned "position of the entire moving vacuum adsorption zone 130" may include the simultaneous movement of the two relative boundaries of the vacuum adsorption zone 130 along the axial direction of the drive shaft 121 in the direction indicated by arrow B or arrow C, so as to move the position of the entire vacuum adsorption zone 130.

[0047] It should be understood that the vacuum adsorption roller 100 and coating system provided in this application embodiment can adjust the coverage of the vacuum adsorption zone 130 by controlling at least a portion of the moving body 122 to move axially along the drive shaft 121 when the width of the base film changes. This ensures that the vacuum adsorption zone 130 can still cover the edge of the base film after the width change, effectively improving the problem of vacuum pressure leakage caused by the change in the width of the base film, improving tension stability, ensuring the stability of the base film during the transport process, and thus ensuring the coating effect and efficiency.

[0048] In one embodiment, there are two adjustment components 120, which are arranged opposite to each other along the axial direction of the roller body 110. The suction notches 1223 of the moving bodies 122 in the two adjustment components 120 respectively form vacuum adsorption zones 130 between them and the adsorption through holes at different locations on the roller body 110. The different vacuum adsorption zones 130 can be used to cover the opposite two sides of the base film along the axial direction of the roller body 110. In other words, when the width of the base film changes, by moving at least a portion of the movable body 122 in one of the adjustment components 120 along the axial direction of the drive shaft 121 (parallel to the axial direction of the roller 110), the corresponding vacuum adsorption zone 130 can cover one side edge of the base film after the width change. Correspondingly, by moving at least a portion of the movable body 122 in the other adjustment component 120 along the axial direction of the drive shaft 121, the corresponding vacuum adsorption zone 130 can cover the other side edge of the base film after the width change, thereby further improving the problem of vacuum pressure leakage caused by the change in the width of the base film, ensuring the stability of the base film during the transport process, and thus ensuring the coating effect and efficiency.

[0049] In one embodiment, the vacuum adsorption roller 100 may further include an edge sensor disposed within the roller body 110. The edge sensor can output a signal characterizing the edge position of the base film conveyed by the roller body 110. In practical applications, when the control system receives the position signal emitted by the edge sensor, it can determine the specific position of the current edge of the base film based on the position signal. Then, based on the current edge position of the base film, it controls the moving body 122 to move axially along the drive shaft 121 (for example, the control system can control the moving body 122 to move axially along the drive shaft 121 by controlling the drive motor 123 described later), adjusting the coverage area of ​​the vacuum adsorption zone 130 so that the vacuum adsorption zone 130 can more accurately cover the edge of the base film.

[0050] In one embodiment, the aforementioned edge sensor may include a photoelectric sensor, an ultrasonic sensor, a capacitive sensor, etc.

[0051] In one embodiment, the vacuum adsorption roller 100 may further include a pressure sensor disposed within the roller body 110. The pressure sensor can be used to output a signal characterizing the pressure inside the roller body 110. In practical applications, when the control system receives the signal from the pressure sensor, it can determine the fluctuation range of the internal pressure of the roller body 110 based on the pressure signals at different time points. If the fluctuation range of the internal pressure of the roller body 110 is large, it can easily affect the stability of the adsorption tension of the vacuum adsorption zone 130 on the base film, leading to damage to the base film. Therefore, the control system can adjust the pressure inside the roller body 110 by adjusting the speed of the vacuum pump to ensure the stability of the internal pressure of the roller body 110, thereby ensuring the tension stability of the base film during the conveyor belt process.

[0052] like Figure 3 As shown, the adjustment assembly 120 may further include a drive motor 123 and a transmission component 124. Both the drive motor 123 and the transmission component 124 are located outside the roller body 110, and the transmission component 124 is connected to the drive motor 123 and the transmission shaft 121. In practical applications, after the drive motor 123 is started, the drive motor 123 can drive the transmission shaft 121 to rotate through the transmission component 124. During the rotation of the transmission shaft 121, at least a portion of the moving body 122 can be moved along the axial direction of the transmission shaft 121, thereby adjusting the coverage area of ​​the aforementioned vacuum adsorption zone 130.

[0053] In one embodiment, the drive shaft 121 adopts a lead screw structure, and at least a portion of the moving body 122 is threadedly engaged with the drive shaft 121, so that during the rotation of the drive shaft 121, at least a portion of the moving body 122 can move along the axial direction of the drive shaft 121.

[0054] In one embodiment, the transmission component 124 may include gears, shafts, chains, belts, etc.

[0055] like Figure 3 As shown, the movable body 122 may include a bushing 1221, an isolator 1222, and a connector 1224. The bushing 1221 is sleeved on the drive shaft 121. The isolator 1222 is provided with the aforementioned air intake notch 1223. The two ends of the connector 1224 are respectively connected to the bushing 1221 and the isolator 1222.

[0056] It should be understood that during the axial movement of the bushing 1221 along the drive shaft 121, the bushing 1221 can drive the connecting member 1224 to move axially along the drive shaft 121, the connecting member 1224 can drive at least a portion of the isolation member 1222 to move axially along the drive shaft 121, and the position of the suction notch 1223 on the isolation member 1222 moves axially along the drive shaft 121, thereby adjusting the coverage of the vacuum adsorption zone 130.

[0057] In one embodiment, the drive shaft 121 is a lead screw structure, and the bushing 1221 is threadedly engaged with the drive shaft 121. During the rotation of the drive shaft 121, the bushing 1221 can be driven to move along the axial direction of the drive shaft 121.

[0058] like Figure 3 and Figure 4 As shown, the separator 1222 may include a first separator 12221 and a second separator 12222. The outer wall of the first separator 12221 is connected to the inner wall of the roller body 110 (that is, the first separator 12221 is fixed relative to the roller body 110). The second separator 12222 is connected to the aforementioned connector 1224. The first separator 12221 is located at the end of the roller body 110 and between the second separator 12222. The second separator 12222 slides with the first separator 12221 along the axial direction of the drive shaft 121.

[0059] It should be understood that during the process of the bushing 1221 driving the connecting piece 1224 to move axially along the drive shaft 121, the first partition 12221 remains fixed, and the connecting piece 1224 can drive the second partition 12222 to move axially along the drive shaft 121. The suction notch 1223 on the second partition 12222 will also change position, and the coverage area of ​​the vacuum adsorption zone 130 corresponding to the suction notch 1223 on the first partition 12221 and the suction notch 1223 on the second partition 12222 will also change.

[0060] It should be understood that during the movement of the second partition 12222 along the axial direction of the drive shaft 121, the second partition 12222 can slide relative to the first partition 12221. The first partition 12221 can guide the second partition 12222 to prevent the second partition 12222 from deviating from the axial direction of the drive shaft 121 during the movement.

[0061] It should be noted that the outer wall of the second partition 12222 slides against the inner wall of the roller body 110 along the axial direction of the drive shaft 121. In other words, the second partition 12222 remains in contact with the inner wall of the roller body 110 throughout its axial movement along the drive shaft 121, effectively preventing vacuum pressure leakage and maintaining the stability of the vacuum pressure inside the roller body 110. Similarly, the connection between the outer wall of the first partition 12221 and the inner wall of the roller body 110 also prevents gaps between them, effectively preventing vacuum pressure leakage and maintaining the stability of the vacuum pressure inside the roller body 110.

[0062] like Figure 4 As shown, both the first partition 12221 and the second partition 12222 have an arc-shaped structure. In this way, the outer walls of the first partition 12221 and the second partition 12222 can be better adapted to the inner wall of the roller body 110. It is not easy for a gap to be generated between the outer wall of the first partition 12221 and the inner wall of the roller body 110, and it is not easy for a gap to be generated between the outer wall of the second partition 12222 and the inner wall of the roller body 110, effectively preventing vacuum pressure leakage.

[0063] like Figure 4 As shown, the outer wall of the second partition 12222 is in sliding fit with the inner wall of the first partition 12221. That is, during the movement of the second partition 12222 along the axial direction of the drive shaft 121, the second partition 12222 can extend into or extend out of the first partition 12222. The inner wall of the first partition 12221 can guide the second partition 12222, preventing the second partition 12222 from deviating from the axial direction of the drive shaft 121 during the movement.

[0064] It should be noted that, since the second partition 12222 can extend into or out of the second partition 12222, the inner wall of the roller body 110 in this embodiment of the application smoothly transitions at the junction of the first partition 12221 and the second partition 12222 through an arc-shaped surface. This ensures that the inner wall of the roller body 110 can always abut against the outer wall of the first partition 12221 and the outer wall of the second partition 12222, while also reducing the obstruction caused by the inner wall of the roller body 110 to the sliding process of the second partition 12222, thus ensuring that the second partition 12222 can slide smoothly along the axial direction of the drive shaft 121.

[0065] like Figure 4As shown, the connector 1224 may include multiple connecting rods 12241, each connecting rod 12241 connecting the bushing 1221 and the isolator 1222. The multiple connecting rods 12241 are distributed circumferentially around the bushing 1221. In this way, on the one hand, the multiple connecting rods 12241 can enhance the connection strength between the bushing 1221 and the isolator 1222; on the other hand, the bushing 1221 drives the isolator 1222 to move through the multiple connecting rods 12241. The multiple connecting rods 12241 can synchronously drive different parts of the isolator 1222 to move axially along the drive shaft 121, improving the stability of the isolator 1222 during movement.

[0066] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0067] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0068] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0069] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0070] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A vacuum adsorption roller, characterized in that, include: Roller body (110), the outer surface of which is provided with adsorption through holes; The adjustment assembly (120) includes a drive shaft (121) and a movable body (122). Both the drive shaft (121) and the movable body (122) are disposed within the roller body (110). The movable body (122) is provided with an air suction notch (1223). A vacuum adsorption zone (130) is formed between the air suction notch (1223) and the adsorption through hole. At least a portion of the movable body (122) is movably sleeved on the drive shaft (121) along the axial direction of the drive shaft (121) to adjust the coverage area of ​​the vacuum adsorption zone (130).

2. The vacuum adsorption roller according to claim 1, characterized in that, The mobile body (122) includes: A bushing (1221) is fitted onto the drive shaft (121); The isolation element (1222) is provided with the suction notch (1223); A connector (1224) is provided, wherein the two opposite ends of the connector (1224) are respectively connected to the bushing (1221) and the spacer (1222).

3. The vacuum adsorption roller according to claim 2, characterized in that, The isolation element (1222) includes: The outer wall of the first partition (12221) is connected to the inner wall of the roller body (110); The second partition (12222) is connected to the connector (1224), and the second partition (12222) slides in cooperation with the first partition (12221) along the axial direction of the drive shaft (121). The first partition (12221) is located between the end of the roller body (110) and the second partition (12222). The outer wall of the second partition (12222) slides in cooperation with the inner wall of the roller body (110) along the axial direction of the drive shaft (121). The first partition (12221) and the second partition (12222) are both provided with the air intake notch (1223).

4. The vacuum adsorption roller according to claim 3, characterized in that, Both the first partition (12221) and the second partition (12222) are arc-shaped structures, and the outer wall of the second partition (12222) slides in conjunction with the inner wall of the first partition (12221).

5. The vacuum adsorption roller according to claim 2, characterized in that, The connector (1224) includes a plurality of connecting rods (12241), each of which connects the bushing (1221) and the isolator (1222), and the plurality of connecting rods (12241) are distributed at intervals along the circumference of the bushing (1221).

6. The vacuum adsorption roller according to claim 1, characterized in that, The adjustment assembly (120) further includes: A drive motor (123) is located outside the roller body (110); A transmission component (124) is disposed outside the roller body (110), and the transmission component (124) is connected to the drive motor (123) and the transmission shaft (121).

7. The vacuum adsorption roller according to claim 1, characterized in that, The number of adjustment components (120) is two, and the two adjustment components (120) are arranged opposite each other along the axial direction of the roller body (110).

8. The vacuum adsorption roller according to claim 1, characterized in that, The vacuum adsorption roller also includes: An edge sensor is disposed inside the roller (110) and is used to output a signal characterizing the edge position of the base film conveyed by the roller (110).

9. The vacuum adsorption roller according to claim 1, characterized in that, The vacuum adsorption roller also includes: A pressure sensor is disposed inside the roller (110) and is used to output a signal characterizing the pressure inside the roller (110).

10. A coating system, characterized in that, include: Coating machine; The vacuum adsorption roller as described in any one of claims 1 to 9 is used to convey the base film to the coating machine.

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