Deviation rectifying device and lithium battery separator winding equipment

Abstract

The application relates to the technical field of lithium battery diaphragm production equipment, in particular to a deviation rectifying device and a lithium battery diaphragm winding equipment. The deviation rectifying device comprises a mounting frame and a deviation rectifying assembly. The deviation rectifying assembly comprises a first connecting rod, a movable frame and an adjusting unit. One end of the first connecting rod is rotationally arranged on the mounting frame, and the other end is connected with the movable frame. The adjusting unit is arranged on the movable frame, and the first connecting rod drives the movable frame and the adjusting unit to rotate. The adjusting unit comprises a first telescopic rod, an adjusting roller and a limiting roller. In the deviation rectifying device, the first connecting rod can be rotated to drive the movable frame and the adjusting unit to rotate, the position of the adjusting unit is adjusted, the material can be kept in contact with the adjusting unit and the appropriate wrap angle is maintained, the continuous and stable production is ensured, meanwhile, the first telescopic rod is telescoped to drive the adjusting roller and the limiting roller to move, the material deviation can be effectively corrected, the winding quality and the edge alignment precision are improved, and the high-quality production requirement is met.

Description

Technical Field

[0001] This application relates to the field of lithium battery separator production equipment technology, and more specifically, to a web guiding device and a lithium battery separator winding device. Background Technology

[0002] With the rapid development of the new energy industry, the quality requirements for lithium battery separators are becoming increasingly stringent. Especially during the winding process, the alignment accuracy of the separator edges is a crucial indicator of its quality. To ensure edge alignment during winding, existing lithium battery separator casting machines typically employ edge alignment adjustment mechanisms. Common structures involve multiple guide rollers, whose positions or angles are adjusted manually or through simple mechanical transmission to accommodate separator offsets during transport. However, these adjustments are mostly linear, making it difficult to handle multi-angle offsets during transport, resulting in poor adjustment effectiveness. Some mechanisms fail to quickly and accurately adjust after detecting separator offset, leading to accumulated edge deviations during winding and uneven end faces. For lithium battery separators of varying widths and thicknesses, existing mechanisms have limited adjustment ranges, requiring extensive manual adjustments, which are cumbersome and reduce production efficiency. Utility Model Content

[0003] The purpose of this application is to provide a web-correcting device and a lithium battery separator winding equipment, wherein the web-correcting device is capable of correcting the web-correcting of materials.

[0004] To achieve the above objectives, in a first aspect, the correction device provided by this utility model includes: Mounting bracket, which provides a mounting base; A correction assembly includes a first connecting rod, a movable frame, and an adjustment unit. One end of the first connecting rod is rotatably mounted on the mounting frame, and the other end is connected to the movable frame. The adjustment unit is mounted on the movable frame. The first connecting rod drives the movable frame and the adjustment unit to rotate. The adjustment unit includes a first telescopic rod, an adjusting roller, and a limiting roller. The first telescopic rod is connected to the movable frame. The first telescopic rod can extend and retract to drive the adjusting roller and the limiting roller to move in a direction perpendicular to the material movement, so that the adjusting roller and the limiting roller cooperate to correct the material.

[0005] In the correction device provided in this application, the position of the movable frame and the adjustment unit can be adjusted by rotating the first connecting rod, ensuring that the material always maintains good contact with the adjustment unit and maintains a suitable wrap angle, thus ensuring continuous and stable production. At the same time, the extension and retraction of the first telescopic rod drives the adjustment roller and the limit roller to move, which can effectively correct the material deviation, improve the winding quality and edge alignment accuracy, and meet the requirements of high-quality production. In addition, unlike traditional mechanisms, this device has a more flexible adjustment method, which can adjust the correction angle from multiple angles to adapt to complex deviation situations and improve the adjustment effect.

[0006] Optionally, one end of the first telescopic rod away from the first connecting rod is connected to the movable frame, the adjusting roller is disposed on the end of the first telescopic rod away from the first connecting rod and at the top of the movable frame, and the limiting roller is disposed on the adjusting roller and can abut against the end of the material.

[0007] Optionally, the correction assembly further includes a first gear, a second gear, and a first motor, wherein the second gear is fixedly connected to one end of the first connecting rod, and the rotation of the second gear drives the first connecting rod to rotate; The output shaft of the first motor is fixedly connected to the first gear, and the first gear meshes with the second gear. The rotation of the first motor drives the first gear to rotate, and the rotation of the first gear drives the second gear to rotate.

[0008] Optionally, it also includes a fixing frame, which is fixedly mounted on the mounting bracket, and the first motor is fixedly mounted on the fixing frame.

[0009] Optionally, the correction assembly further includes a second motor, which is fixedly mounted on the movable frame. The output shaft of the second motor is fixedly connected to the first connecting rod, and the rotation of the second motor drives the movable frame to rotate relative to the first connecting rod.

[0010] Optionally, the correction assembly further includes a second connecting rod, one end of which is rotatably mounted on the mounting bracket, and the other end of which is connected to the end of the movable bracket away from the first connecting rod.

[0011] Optionally, the movable frame has two ends, and two adjustment units are provided accordingly, one adjustment unit is provided at one end of the movable frame, and the other adjustment unit is provided at the other end of the movable frame.

[0012] Optionally, it also includes a mounting plate and a detection sensor. The mounting plate is fixedly mounted on the mounting frame, and the detection sensor is fixedly mounted on the mounting plate to obtain the offset parameters of the material and drive the first telescopic rod to extend and retract along a direction perpendicular to the material's movement based on the offset parameters.

[0013] Secondly, embodiments of this application also provide a lithium battery separator winding device, including a conveying roller group, a winding roller, and a web-correcting device as described in any of the above embodiments.

[0014] Optionally, the conveying roller assembly includes a material roller, a drive roller, and at least two guide rollers. The material roller, the drive roller, and the guide rollers are rotatably mounted on the mounting frame. A diaphragm is wound on the material roller. The drive roller is used to drive the diaphragm to unfold from the material roller. The guide rollers are used to guide the conveying path of the diaphragm.

[0015] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure from one perspective of one embodiment of the lithium battery separator winding device provided in this application; Figure 2 A two-view structural schematic diagram of one embodiment of the lithium battery separator winding device provided in this application; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 A schematic diagram from a perspective of a portion of the structure of one embodiment of the lithium battery separator winding device provided in this application; Figure 5 This is a three-view structural schematic diagram of one embodiment of the lithium battery separator winding device provided in this application.

[0018] icon: 1-Mounting bracket; 2-Conveyor roller assembly; 21-Material roller; 22-Drive roller; 23-Drive box; 24-Guide roller; 3-Correction assembly; 31-First motor; 32-First gear; 33-First connecting rod; 34-Second gear; 35-Modible frame; 36-Mounting slot; 37-First telescopic rod; 38-Adjusting roller; 39-Limiting roller; 3101-Fixing slot; 3102-Second motor; 4-Second connecting rod; 5-Fixing frame; 6-Mounting plate; 7-Detection sensor; 8-Support; 9-Take-up roller. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] The embodiments of this application provide a web-correcting device and a lithium battery separator winding device. The lithium battery separator winding device includes a conveyor roller group 2, a winding roller 9, and the web-correcting device provided in the embodiments of this application.

[0023] The correction device includes a mounting frame 1 and a correction component 3.

[0024] like Figure 1 As shown, mounting bracket 1 is used to provide the mounting base.

[0025] like Figure 1 As shown, the conveyor roller assembly 2 is rotatably mounted on the mounting frame 1 and is used to convey the diaphragm to the take-up roller 9. Exemplarily, the conveyor roller assembly 2 stores the diaphragm of a lithium battery.

[0026] like Figure 1As shown, the web guiding component 3 is located between the conveying roller group 2 and the take-up roller 9 to guide the web guiding of the diaphragm, ensuring the quality of the diaphragm winding on the take-up roller 9. Exemplarily, the take-up roller 9 is connected to a rotating motor via a transmission component. During rotation, the rotating motor drives the take-up roller 9 to rotate via the transmission component, causing the diaphragm to be wound onto the take-up roller 9. The transmission component includes, but is not limited to, a gear drive mechanism, a pulley drive mechanism, or a chain drive mechanism. The rotating motor includes, but is not limited to, a DC motor, an AC motor, a brushless DC motor, a stepper motor, a servo motor, or a switched reluctance motor.

[0027] like Figure 2 and Figure 3 As shown, the correction assembly 3 includes a first connecting rod 33, a movable frame 35, and an adjustment unit. One end of the first connecting rod 33 is rotatably mounted on the mounting frame 1, and the other end is connected to the movable frame 35. The adjustment unit is mounted on the movable frame 35. The first connecting rod 33 drives the movable frame 35 and the adjustment unit to rotate. The adjustment unit is used to correct the material, such as a lithium battery separator.

[0028] It should be noted that as more and more diaphragm is wound on the take-up roller 9, its outer diameter gradually increases. In order to ensure that the diaphragm surface can maintain contact with the adjustment unit and maintain a proper wrap angle, and to prevent the diaphragm surface from detaching from the adjustment unit on the movable frame 35, and to wind onto the take-up roller 9 without jamming, during use, the first connecting rod 33 is rotated. The rotation of the first connecting rod 33 drives the movable frame 35 and the adjustment unit to rotate, thereby adjusting the position of the adjustment unit so that the adjustment unit adapts to the winding thickness of the diaphragm on the take-up roller 9.

[0029] The adjustment unit includes a first telescopic rod 37, an adjustment roller 38, and a limiting roller 39. The first telescopic rod 37 is connected to the movable frame 35. The first telescopic rod 37 extends and retracts, driving the adjustment roller 38 and the limiting roller 39 to move in a direction perpendicular to the diaphragm movement, so that when the conveying roller group 2 conveys the diaphragm to the winding roller 9, the adjustment roller 38 and the limiting roller 39 cooperate to correct the diaphragm deviation.

[0030] For example, the first telescopic rod 37 includes, but is not limited to, a hydraulic telescopic mechanism, a pneumatic telescopic mechanism, an electric actuator telescopic mechanism, a threaded screw telescopic mechanism, or a linear motor.

[0031] For example, the first telescopic rod 37 is fixedly connected to the movable frame 35 by welding, snap-fitting, or bolting.

[0032] For example, the first connecting rod 33 can be manually adjusted in its rotation angle.

[0033] In this application, by rotating the first connecting rod 33, the movable frame 35 and the adjustment unit are driven to rotate, thereby adjusting the position of the adjustment unit to ensure that the diaphragm membrane surface can maintain contact with the adjustment unit and maintain a proper wrap angle, preventing the diaphragm membrane surface from detaching from the adjustment unit on the movable frame 35, thus ensuring the continuity and stability of production.

[0034] In this application, the first telescopic rod 37 extends and retracts, causing the adjusting roller 38 and the limiting roller 39 to move. When the conveying roller group 2 conveys the diaphragm to the winding roller 9, this synergistic effect can effectively correct the diaphragm's misalignment, ensure the winding quality of the diaphragm on the winding roller 9, improve the alignment accuracy of the diaphragm edges, and meet the requirements for high-quality production of lithium battery diaphragms.

[0035] Unlike traditional mechanisms where guide rollers are mostly adjusted in a linear direction and are difficult to handle multi-angle offsets, this device offers a more flexible adjustment method. By rotating the first connecting rod 33 and extending the first telescopic rod 37, the diaphragm can be adjusted from multiple angles, better adapting to various complex offsets that occur during diaphragm transport and greatly improving the adjustment effect.

[0036] Of course, the correction device provided in the embodiments of this application can be applied not only to the lithium battery separator winding equipment provided in the embodiments of this application, but also to other equipment, such as plastic film winding equipment, ultrafiltration membrane winding equipment, etc. The plastic film winding equipment can wind up plastic film, and the adjustment unit can be used to correct the plastic film. The ultrafiltration membrane winding equipment can wind up ultrafiltration membrane, and the adjustment unit can be used to correct the ultrafiltration membrane. It is understood that the plastic film winding equipment and ultrafiltration membrane winding equipment can also be configured with a conveying roller group 2 for storing and conveying materials and a winding roller 9 for receiving materials, similar to those of the lithium battery separator winding equipment. Of course, other structures can also be provided. For the sake of simplicity and ease of understanding, the following description will still take the lithium battery separator winding equipment with the correction device as an example to illustrate the technical solution of this application.

[0037] To reduce the space occupied by the adjustment unit, such as Figure 3 As shown, in one embodiment, the movable frame 35 is provided with a mounting groove 36, the first telescopic rod 37 is installed in the mounting groove 36 of the movable frame 35, and the adjusting roller 38 and the limiting roller 39 are located outside the mounting groove 36.

[0038] For example, the first telescopic rod 37 is fixedly connected to the inner wall of the mounting groove 36 by welding, snap-fitting or bolting.

[0039] like Figure 3As shown, in one embodiment, the end of the first telescopic rod 37 away from the first connecting rod 33 is connected to the movable frame 35. The extension of the first telescopic rod 37 drives the adjusting roller 38 and the limiting roller 39 to approach the first connecting rod 33. The adjusting roller 38 is disposed on the end of the first telescopic rod 37 away from the first connecting rod 33 and is located at the top of the movable frame 35 to ensure that the diaphragm is in contact with the adjusting roller 38. The limiting roller 39 is disposed on the adjusting roller 38 and can abut against the end of the diaphragm. The limiting roller 39 can prevent the membrane edge from curling up during the movement of the diaphragm.

[0040] like Figure 2 and Figure 3 As shown, in one embodiment, the movable frame 35 is rotatably connected to the first connecting rod 33.

[0041] Besides manually driving the first connecting rod 33 to rotate, the first connecting rod 33 can also be driven to rotate automatically, such as... Figure 5 As shown, in one embodiment, the correction assembly 3 further includes a first gear 32, a second gear 34, and a first motor 31. The second gear 34 is fixedly connected to one end of the first connecting rod 33, and the fixing method is, for example, welding, snap-fitting, or bolt connection. The rotation of the second gear 34 drives the first connecting rod 33 to rotate.

[0042] The output shaft of the first motor 31 is fixedly connected to the first gear 32. The first gear 32 meshes with the second gear 34. The rotation of the first motor 31 drives the first gear 32 to rotate, the rotation of the first gear 32 drives the second gear 34 to rotate, and the rotation of the second gear 34 drives the first connecting rod 33 to rotate.

[0043] For example, the first motor 31 includes, but is not limited to, a DC motor, an AC motor, a brushless DC motor, a stepper motor, a servo motor, or a switched reluctance motor.

[0044] like Figure 5 As shown, in one embodiment, the correction device further includes a fixing frame 5, which is fixedly mounted on the mounting frame 1, and the fixing method is, for example, welding or bolt connection.

[0045] The first motor 31 is fixedly mounted on the mounting bracket 5, and the fixing method is, for example, welding, snap-fitting or bolt connection.

[0046] The correction assembly 3 also includes a second motor 3102, which is fixedly mounted on the movable frame 35. The output shaft of the second motor 3102 is fixedly connected to the first connecting rod 33. The rotation of the second motor 3102 drives the movable frame 35 to rotate relative to the first connecting rod 33.

[0047] For example, the second motor 3102 includes, but is not limited to, a DC motor, an AC motor, a brushless DC motor, a stepper motor, a servo motor, or a switched reluctance motor.

[0048] For example, the second motor 3102 and the movable frame 35 are fixedly connected by welding, snap-fitting or bolting.

[0049] It should be noted that initially, the first connecting rod 33 is horizontal, and the movable frame 35, adjusting roller 38, and limiting roller 39 are located on the same straight line parallel to the vertical direction. As more and more diaphragm is wound on the winding roller 9, the first connecting rod 33 needs to adjust its rotation angle accordingly. During the rotation following the first connecting rod 33, the same straight line containing the movable frame 35, adjusting roller 38, and limiting roller 39 will gradually tilt towards the vertical direction. In order to prevent the diaphragm surface from detaching from the adjusting roller 38 on the movable frame 35, a second motor 3102 is further provided to drive the movable frame 35 to rotate relative to the first connecting rod 33, which is beneficial for winding.

[0050] In some embodiments, the first motor 31 and the second motor 3102 are linked for control. For example, when the first motor 31 rotates 45°, the second motor 3102 rotates 45° accordingly. In other embodiments, the first motor 31 and the second motor 3102 can be implemented independently. The second motor 3102 is electrically connected to a level, which is mounted on the movable frame 35 and controls the rotation of the second motor 3102 based on the detection result. The rotation of the second motor 3102 drives the movable frame 35, the first telescopic rod 37, the adjusting roller 38, and the limiting roller 39 to rotate, so that the diaphragm can maintain contact with the adjusting roller 38 and the limiting roller 39 and maintain a suitable wrap angle.

[0051] like Figure 2 and Figure 3 As shown, the correction assembly 3 also includes a fixing groove 3101, which is disposed on the end of the movable frame 35, and the second motor 3102 is fixedly disposed in the fixing groove 3101 of the movable frame 35.

[0052] For example, the second motor 3102 is fixedly connected to the inner wall of the fixing groove 3101 by welding, snap-fitting or bolting.

[0053] To ensure that both ends of the movable frame 35 are balanced and supported, such as Figure 4 As shown, in one embodiment, the correction assembly 3 further includes a second connecting rod 4. One end of the second connecting rod 4 is rotatably mounted on the mounting frame 1, and the other end of the second connecting rod 4 is rotatably connected to one end of the movable frame 35. The other end of the first connecting rod 33 is rotatably connected to the other end of the movable frame 35, thereby forming a U-shaped structure with the first connecting rod 33, the movable frame 35, and the second connecting rod 4.

[0054] like Figure 2 and Figure 4As shown, in one embodiment, the movable frame 35 has two ends, and two adjustment units are provided accordingly. One adjustment unit is provided at one end of the movable frame 35, and the other adjustment unit is provided at the other end of the movable frame 35. The two adjustment units can correct the diaphragm in two directions.

[0055] like Figure 5 As shown, in one embodiment, the correction device further includes a mounting plate 6 and a detection sensor 7.

[0056] Mounting plate 6 is fixedly mounted on mounting bracket 1, and the fixing method is, for example, welding, snap-fitting or bolt connection.

[0057] The detection sensor 7 is fixedly mounted on the mounting plate 6 to acquire the offset parameters of the diaphragm and drive the first telescopic rod 37 to extend or retract based on the offset parameters. For example, if the detection sensor 7 detects that the diaphragm is deviated to the right or left, it controls the extension or retraction of the first telescopic rod 37 and drives the adjusting roller 38 and the limiting roller 39 to move. The movement of the adjusting roller 38 and the limiting roller 39 corrects the deviation of the diaphragm.

[0058] For example, the detection sensor 7 includes, but is not limited to, a vision sensor, an infrared sensor, or an ultrasonic sensor.

[0059] like Figure 1 As shown, in one embodiment, the correction device further includes a support 8, which is fixedly mounted on the mounting frame 1, and the fixing method is, for example, welding, snap-fitting or bolt connection.

[0060] The take-up roller 9 is rotatably mounted on the support 8.

[0061] like Figure 1 and Figure 2 As shown, in one embodiment of the lithium battery separator winding device of this application, the conveying roller group 2 includes a material roller 21, a drive roller 22 and at least two guide rollers 24.

[0062] The material roller 21, drive roller 22 and guide roller 24 are rotatably mounted on the mounting frame 1.

[0063] A diaphragm is wound around the material roller 21.

[0064] The drive roller 22 is used to drive the diaphragm to unfold from the feed roller 21 to unwind and to convey it to the guide roller 24.

[0065] The guide roller 24 is used to guide the conveying path of the diaphragm. After being conveyed from the guide roller 24, the diaphragm passes through the adjustment unit and is then wound onto the take-up roller 9.

[0066] For example, two guide rollers 24 are provided. In another embodiment, three guide rollers 24 are provided. In yet another embodiment, four guide rollers 24 are provided. Of course, in other embodiments, other numbers of guide rollers 24 may also be provided, such as five, six, or seven, etc.

[0067] like Figure 1 and Figure 2 As shown, in one embodiment, the conveyor roller assembly 2 further includes a drive box 23, which is fixedly mounted on the mounting frame 1 and used to drive the drive roller 22 to rotate.

[0068] For example, the drive box 23 is also provided with a drive motor, which includes, but is not limited to, a DC motor, an AC motor, a brushless DC motor, a stepper motor, a servo motor, or a switched reluctance motor.

[0069] For example, the drive motor can be directly connected to the drive roller 22, or it can be connected through a transmission mechanism, including but not limited to a gear drive mechanism, a pulley drive mechanism, or a chain drive mechanism.

[0070] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0071] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A correction device, characterized in that, include: Mounting bracket (1), which is used to provide a mounting base; The correction component (3) includes a first connecting rod (33), a movable frame (35) and an adjustment unit. One end of the first connecting rod (33) is rotatably mounted on the mounting frame (1), and the other end is connected to the movable frame (35). The adjustment unit is mounted on the movable frame (35). The first connecting rod (33) drives the movable frame (35) and the adjustment unit to rotate. The adjustment unit includes a first telescopic rod (37), an adjustment roller (38), and a limiting roller (39). The first telescopic rod (37) is connected to the movable frame (35). The first telescopic rod (37) can extend and retract and drive the adjustment roller (38) and the limiting roller (39) to move in a direction perpendicular to the material movement, so that the adjustment roller (38) and the limiting roller (39) cooperate to correct the material.

2. The correction device according to claim 1, characterized in that, One end of the first telescopic rod (37) away from the first connecting rod (33) is connected to the movable frame (35). The adjusting roller (38) is disposed on one end of the first telescopic rod (37) away from the first connecting rod (33) and is located on the top of the movable frame (35). The limiting roller (39) is disposed on the adjusting roller (38) and can abut against the end of the material.

3. The correction device according to claim 2, characterized in that, The correction component (3) further includes a first gear (32), a second gear (34) and a first motor (31). The second gear (34) is fixedly connected to one end of the first connecting rod (33). The rotation of the second gear (34) drives the first connecting rod (33) to rotate. The output shaft of the first motor (31) is fixedly connected to the first gear (32). The first gear (32) meshes with the second gear (34). The rotation of the first motor (31) drives the first gear (32) to rotate, and the rotation of the first gear (32) drives the second gear (34) to rotate.

4. The correction device according to claim 3, characterized in that, It also includes a fixing frame (5), which is fixedly mounted on the mounting frame (1), and the first motor (31) is fixedly mounted on the fixing frame (5).

5. The correction device according to claim 1, characterized in that, The correction assembly (3) also includes a second motor (3102), which is fixedly mounted on the movable frame (35). The output shaft of the second motor (3102) is fixedly connected to the first connecting rod (33). The rotation of the second motor (3102) drives the movable frame (35) to rotate relative to the first connecting rod (33).

6. The correction device according to claim 1, characterized in that, The correction assembly (3) further includes a second connecting rod (4), one end of which is rotatably mounted on the mounting frame (1), and the other end of which is connected to the end of the movable frame (35) away from the first connecting rod (33).

7. The correction device according to claim 6, characterized in that, The movable frame (35) has two ends, and two adjustment units are provided accordingly. One adjustment unit is located at one end of the movable frame (35), and the other adjustment unit is located at the other end of the movable frame (35).

8. The correction device according to claim 1, characterized in that, It also includes a mounting plate (6) and a detection sensor (7). The mounting plate (6) is fixedly mounted on the mounting frame (1), and the detection sensor (7) is fixedly mounted on the mounting plate (6) to obtain the offset parameters of the material and drive the first telescopic rod (37) to extend and retract in a direction perpendicular to the material movement based on the offset parameters.

9. A lithium battery separator winding device, characterized in that, It includes a conveyor roller assembly (2), a take-up roller (9), and a web-correcting device as described in any one of claims 1-8.

10. The lithium battery separator winding device according to claim 9, characterized in that, The conveying roller assembly (2) includes a material roller (21), a drive roller (22), and at least two guide rollers (24). The material roller (21), the drive roller (22), and the guide rollers (24) are rotatably mounted on the mounting frame (1). The diaphragm is wound on the material roller (21). The drive roller (22) is used to drive the diaphragm to unfold from the material roller (21). The guide rollers (24) are used to guide the conveying path of the diaphragm.

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