Tension adjusting device and winding equipment

Abstract

The utility model discloses a tensioning adjusting device and winding equipment, the tensioning adjusting device comprises a driving device, a rotating frame, a tensioning roller and a limiting piece, the rotating frame is connected with the rotating end of the driving device, the driving device is used for driving the rotating frame to rotate, the tensioning roller is installed on the rotating frame, the axis of the tensioning roller is parallel to the rotating axis of the rotating frame, and the limiting piece is arranged on the rotating frame. The limiting piece is located at the peripheral circle position of the tensioning roller, and a limiting gap is formed between the limiting piece and the peripheral circle surface of the tensioning roller. According to the tensioning adjusting device provided by the invention, the limiting gap is formed between the limiting piece and the tensioning roller, and the limiting gap is only used for limiting the pole lug of the pole piece to pass through, so that the pole lug of the pole piece is limited in the limiting gap, and the pole lug can be tightly attached to the outer surface of the tensioning roller when passing through the limiting gap; the tilting degree of the pole piece when passing through the tensioning roller is controlled, so that the pole lug is prevented from being folded.

Description

Technical Field

[0001] The present application relates to the field of battery cell production, and in particular to a tensioning adjustment device and a winding device. Background Art

[0002] In battery cell production, particularly lithium-ion battery manufacturing, the precise assembly and transfer of positive and negative electrode sheets are critical to ensuring battery performance and yield. Controlling the tension of the positive and negative electrode sheets on the rollers is particularly crucial. Excessive tension not only causes material deformation and wrinkling, severely impacting the product's dimensional accuracy and appearance, but can also cause irreversible damage to the battery's internal structure. Insufficient tension reduces friction between the material and the rollers, leading to slippage. This can cause the material to stick, loosen, or even become entangled on the rollers, ultimately leading to material breakage or equipment failure, severely impacting production efficiency and product yield.

[0003] While existing tension control mechanisms achieve a certain degree of electrode tension adjustment, they still have significant deficiencies in practical application. This is particularly true during the process of applying the electrode and tab to the rollers and threading the tape. Because the tab material is relatively soft, it is more sensitive to tension changes. When the angle of the tension control mechanism swings with tension fluctuations, the tab can easily fold over on the rollers. This not only increases the defective product rate during production but also increases the complexity and cost of subsequent processing. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a tensioning adjustment device and a winding device.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] This application provides:

[0007] A tension adjustment device, comprising:

[0008] Drive device;

[0009] a rotating frame connected to a rotating end of the driving device, wherein the driving device is used to drive the rotating frame to rotate;

[0010] a tensioning roller, the tensioning roller being mounted on the rotating frame, the axis of the tensioning roller being parallel to the rotation axis of the rotating frame;

[0011] A limiting member is located at the outer circumference of the tensioning roller, and a limited gap is formed between the limiting member and the outer circumference surface of the tensioning roller.

[0012] Furthermore, the driving device includes:

[0013] driving parts;

[0014] A swing rod, the swing rod is located at the power output end of the driving member, and the rotating frame is connected to the swing rod;

[0015] a transmission member connected to the power end of the driving member, and the driving member drives the swing arm to rotate through the transmission member;

[0016] An angle limiting structure, wherein the angle limiting structure limits the rotation angle of the swing arm.

[0017] Furthermore, the angle limiting structure includes a fixed frame, the swing arm is rotatably mounted on the fixed frame, an accommodating cavity is defined inside the fixed frame, a swing block is fixedly mounted on the outer surface of the swing arm located in the accommodating cavity, and a blocking rod is fixedly mounted on the fixed frame, and the blocking rod is used to block the swing block when it rotates to a preset angle.

[0018] Furthermore, a connecting structure is provided between the swing block and the swing rod; the connecting structure includes a connecting groove provided on the swing block and a limiting plane provided on the outer surface of the swing rod, the swing rod passes through the connecting groove and is matched and connected through the limiting plane, and a first fixing hole is provided on the outer surface of the swing block, in which a fastener capable of abutting against the limiting plane is installed.

[0019] Furthermore, the tensioning roller includes a fixed rod fixedly mounted on the rotating frame, a rotating roller is rotatably mounted on the outer surface of the fixed rod, connecting blocks are fixedly mounted on the fixed rods at both ends of the rotating roller, and the limiting member is mounted on at least one of the connecting blocks.

[0020] Furthermore, the connecting block includes a fixing block, the axis of the center position of the fixing block passes through a first avoidance hole, the end face of the fixing block is provided with a mounting hole, and the outer peripheral surface of the fixing block is provided with a second fixing hole connected to the first avoidance hole.

[0021] Furthermore, the limiting member includes a mounting plate fixedly mounted on the connecting block, an outer surface of the mounting plate is provided with an arc-shaped plate, and both ends of the arc-shaped plate are provided with guide plates facing away from the fixing rod.

[0022] Furthermore, a second avoidance hole adapted to the fixing rod is formed through the end surface of the mounting plate, and at least one adjustment mounting slot hole is also formed on the end surface of the mounting plate.

[0023] Furthermore, a guide roller is provided on a side away from the plane where the rotating frame is located.

[0024] The present application also provides a winding device comprising any of the tensioning adjustment devices described above.

[0025] The tensioning adjustment device provided in the present application defines a limited gap between the limit member and the tensioning roller, and the limited gap is used to allow only the pole ear of the pole piece to pass through. In this way, the pole ear of the pole piece is confined in the limited gap. For this reason, the pole ear can be tightly attached to the outer surface of the tensioning roller when passing through the limited gap, so as to control the degree of tilting of the pole piece when passing through the tensioning roller, thereby preventing the pole ear from folding.

[0026] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of the structure of the tension adjustment device of the present application from a first perspective is shown;

[0029] Figure 2 It shows a schematic structural diagram of the tension adjustment device of the present application in an exploded state;

[0030] Figure 3 A schematic structural diagram of the tension adjustment device of the present application from a second viewing angle is shown;

[0031] Figure 4 It shows a schematic diagram of the structure of the driving device of the present application in an explosion state;

[0032] Figure 5 Shows a schematic diagram of the connection structure of this application;

[0033] Figure 6 It shows a schematic structural diagram of the tension roller in the exploded state of the present application;

[0034] Figure 7 Shows a schematic diagram of the connection block structure of this application;

[0035] Figure 8 Shows a schematic diagram of the structure of the limiter of this application;

[0036] Figure 9 A front view schematic diagram of the tensioning roller and the limiting member of the present application in the assembled state is shown.

[0037] Description of main component symbols:

[0038] 100. Driving device; 110. Driving member; 120. Swing rod; 130. Transmission member; 140. Angle limiting structure; 141. Fixed frame; 142. Accommodating chamber; 143. Swing block; 144. Blocking rod; 145. Connecting structure; 1451. Connecting groove; 1452. Limiting plane; 1453. First fixing hole; 200. Rotating frame; 300. Tensioning roller; 310. Fixed rod; 320. Rotating roller; 330. Connecting block; 331. Fixed block; 332. Second fixing hole; 333. First avoidance hole; 334. Mounting hole; 400. Limiting member; 410. Mounting plate; 420. Arc plate; 430. Guide plate; 440. Second avoidance hole; 450. Adjusting mounting slot; 500. Guide roller; 600. Limiting gap; 700. Avoidance groove. DETAILED DESCRIPTION

[0039] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0042] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0043] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0044] This application mainly drives the rotating frame 200 to rotate a certain angle through the driving device 100. For this reason, the tensioning roller 300 installed on the rotating frame 200 will also rotate a certain angle, thereby driving the pole piece passing through the tensioning roller 300 to move and realize tensioning of the pole piece. However, in the process of the rotating frame 200 rotating a certain angle to drive the pole piece at the position of the tensioning roller 300 to move, the wrap angle between the pole piece and the tensioning roller 300 will change. Since the pole ear material is relatively soft, the pole ear is easy to fold on the tensioning roller 300 after the wrap angle changes, resulting in a decrease in the pole piece yield. For this reason, this application mainly sets a limit member 400 on the outer surface of the tensioning roller 300, and forms a limited gap 600 between the limit member 400 and the outer surface of the tensioning roller 300 that can only accommodate the pole ear. Therefore, the pole piece will be close to the outer surface of the tensioning roller 300 when passing through the limited gap 600, reducing the warping of the pole ear, thereby preventing the pole ear from folding and improving the pole piece yield.

[0045] In this embodiment, a tensioning adjustment device is disclosed, which includes a driving device 100, a rotating frame 200, a tensioning roller 300 and a limiting member 400, wherein the rotating frame 200 is connected to the rotating end of the driving device 100, and the driving device 100 is used to drive the rotating frame 200 to rotate; the tensioning roller 300 is installed on the rotating frame 200, and the axis of the tensioning roller 300 is parallel to the rotation axis of the rotating frame 200; the limiting member 400 is located at the outer circumference of the tensioning roller 300, and a limited gap 600 is formed between the limiting member 400 and the outer circumference surface of the tensioning roller 300.

[0046] See Figures 1 to 3 As shown, the driving device 100 is fixedly mounted on a fixed plate, and the rotating frame 200 is connected to the rotating end of the driving device 100. By starting the driving device 100, the rotating frame 200 can be driven to rotate at a certain angle. Specifically, in this embodiment, there are two tensioning rollers 300, and the two tensioning rollers 300 are respectively located at the left and right ends of the rotating frame 200, that is, located on both sides of the rotating axis of the rotating frame 200. When the rotating frame 200 rotates and swings, the tensioning rollers 300 on the left and right sides will also be driven to swing. Due to the swing, the two tensioning rollers 300 will be located at a high position and the other will be located at a low position. Under the action of the height difference between the two tensioning rollers 300, the pole piece is tensioned or relaxed. The specific tensioning and relaxation degrees can be controlled according to actual needs to control the rotation angle of the rotating frame 200.

[0047] See Figures 1 to 3 and Figure 9 As shown, a limiting member 400 is provided at the outer surface of each tensioning roller 300. The specific installation position of the limiting member 400 can be designed according to the embodiment. It can be installed on the rotating frame 200 or on the tensioning roller 300. As long as a limited gap 600 that only allows the tab to pass can be formed between the limiting member 400 and the outer surface of the tensioning roller 300, the specific installation position is not limited here. In this embodiment, the limiting member 400 is installed at the fixed end of the tensioning roller 300. The specific installation method is described in detail below and will not be elaborated on here.

[0048] In one embodiment, a guide roller 500 is provided on a side away from the plane where the rotating frame 200 is located. Specifically, when the rotating frame 200 is in a horizontal state, guide rollers 500 are provided in both the upper and lower directions of the plane where the rotating frame 200 is located. Furthermore, in order to facilitate the pole piece to pass through the tensioning roller 300 and the guide roller 500, an avoidance groove 700 is provided in the middle of the rotating frame 200, thereby facilitating the pole piece to pass, and the pole piece is avoided by the avoidance groove 700.

[0049] Specifically, the pole piece first passes through one of the tensioning rollers 300 and the guide roller 500, and then passes through the avoidance groove 700 and continues to pass through another guide roller 500 and the tensioning roller 300 in sequence. Figure 1 and Figure 3 shown.

[0050] In order to drive the rotating frame 200 to rotate, the driving device 100 includes a driving member 110, a swing rod 120 and a transmission member 130; wherein the swing rod 120 is located at the power output end of the driving member 110, and the rotating frame 200 is connected to the swing rod 120; the transmission member 130 is connected to the power end of the driving member 110, and the driving member 110 drives the swing rod 120 to rotate through the transmission member 130.

[0051] See Figure 4 As shown, the present application mainly transmits the rotational power to the swing rod 120 through the driving member 110 via the transmission member 130. Since the rotating frame 200 is connected to the swing rod 120, the rotating frame 200 is driven to rotate a certain angle while the swing rod 120 rotates, that is, it can drive the rotating frame 200 to swing a certain angle.

[0052] Exemplarily, the driving member 110 is a motor, specifically, the driving member 110 is a servo motor. Of course, the driving member 110 can also be other components that can provide rotational power; the transmission member 130 is a coupling, which transmits the power of the driving member 110 to the swing rod 120 through the coupling. Furthermore, the output shaft of the driving member 110 can be directly connected to the swing rod 120 if the use conditions permit.

[0053] In order to ensure that the driving member 110 can drive the rotating frame 200 connected to the swing arm 120 to rotate, a reducer can be installed on the output shaft of the driving member 110. It can be a spur gear, helical gear or other type of reducer, and a planetary reducer can also be selected. In practice, it can be selected according to needs and is not limited here.

[0054] The driving device 100 further includes an angle limiting structure 140 , which limits the rotation angle of the swing arm 120 .

[0055] The angle limiting structure 140 includes a fixing frame 141, the swing rod 120 is rotatably mounted on the fixing frame 141, the fixing frame 141 defines an accommodating cavity 142 inside, a swing block 143 is fixedly mounted on the outer surface of the swing rod 120 located in the accommodating cavity 142, and a blocking rod 144 is fixedly mounted on the fixing frame 141, and the blocking rod 144 is used to block the swing block 143 when it rotates to a preset angle.

[0056] See Figures 3 to 5As shown, in order to prevent the swing arm 120 from rotating at an excessive angle and causing the pole piece to be tensioned and broken during transition, it is necessary to limit the maximum rotation angle of the swing arm 120. Specifically, the swing arm 120 is rotatably mounted on the fixing frame 141, and the swing block 143 is located on the outer surface of the swing arm 120 in the accommodating cavity 142. Therefore, when the swing arm 120 rotates, the swing block 143 is also driven to rotate. In this embodiment, two blocking rods 144 are respectively mounted on the fixing frames 141 on the left and right sides of the swing block 143, and the blocking rods 144 located on the fixing frames 141 extend into the accommodating cavity 142. When the swing arm 120 drives the swing block 143 to rotate to the maximum angle, it will be blocked by the left or right blocking rod 144 to prevent the swing arm 120 from continuing to rotate, thereby ensuring that the pole piece will not break due to excessive tension.

[0057] In this embodiment, the blocking rod 144 can be adjusted to move closer to or away from the swing block 143 on the fixing frame 141. The blocking rod 144 can be made of bolts, that is, the bolts are threadedly connected to the fixing frame 141. The fixing frame 141 can be screwed according to the maximum rotation angle so that its end moves closer to or away from the swing block 143. The specific screwing distance of the blocking rod 144 is not limited here.

[0058] A connecting structure 145 is provided between the swing block 143 and the swing rod 120; the connecting structure 145 includes a connecting groove 1451 opened on the swing block 143 and a limiting plane 1452 opened on the outer surface of the swing rod 120, the swing rod 120 passes through the connecting groove 1451 and is matched and connected through the limiting plane 1452, and a first fixing hole 1453 is opened on the outer surface of the swing block 143, and a fastener that can abut against the limiting plane 1452 is installed in the first fixing hole 1453.

[0059] See Figure 4 and Figure 5As shown, in order to enable the swing block 143 and the swing rod 120 to be fixedly connected, a connecting groove 1451 is provided to adapt it to the swing rod 120. Furthermore, in order to prevent the swing block 143 from rotating relative to the swing rod 120, a limiting plane 1452 is provided on the outer surface of the swing rod 120. When in use, the connecting groove 1451 is penetrated at the position of the limiting plane 1452. The connecting groove 1451 cooperates with the limiting plane 1452 to limit the circumferential rotation of the swing block 143, thereby allowing the swing rod 120 and the swing block 143 to rotate synchronously. More specifically, in order to prevent the swing block 143 from moving in the axial direction of the swing rod 120, a fastener can be threadedly connected to the first fixing hole 1453, and the other end of the fastener passes through the first fixing hole 1453 and abuts against the limiting plane 1452, thereby enabling the swing block 143 and the swing rod 120 to achieve axial relative movement. In this embodiment, the fastener can be a bolt, a screw or other component, which is not specifically limited here.

[0060] The tensioning roller 300 includes a fixed rod 310 fixedly mounted on the rotating frame 200, and a rotating roller 320 is rotatably mounted on the outer surface of the fixed rod 310. Connecting blocks 330 are fixedly mounted on the fixed rod 310 at both ends of the rotating roller 320, and the limiting member 400 is mounted on at least one of the connecting blocks 330.

[0061] See Figures 1 to 3 as well as Figure 6 As shown, the tensioning roller 300 needs to guide the electrode while tensioning the battery cell electrode. For this reason, in order to reduce the friction between the electrode and the tensioning roller 300 during the electrode conveying process, the tensioning roller 300 needs to be rotated. Specifically, the fixed rod 310 in this embodiment is fixedly mounted on the rotating frame 200, and the outer surface of the fixed rod 310 is provided with a rotating roller 320 that can rotate relative to the fixed rod 310. During the electrode conveying process, the electrode is wrapped around the outer surface of the rotating roller 320. Furthermore, a bearing is provided between the rotating roller 320 and the outer surface of the fixed rod 310, and the rotating roller 320 can be rotated relative to the fixed rod 310 through the bearing.

[0062] In one embodiment, in order to prevent the rotating roller 320 from axially moving relative to the fixed rod 310 , specifically, connecting blocks 330 are fixedly installed on the fixed rod 310 at both ends of the rotating roller 320 , and the connecting blocks 330 prevent the rotating roller 320 from axially moving.

[0063] In this embodiment, the limiting member 400 is installed on one of the connecting blocks 330 . Specifically, the limiting member 400 is located in the direction of the tab of the electrode piece.

[0064] The connecting block 330 includes a fixing block 331 , the axis of the center position of the fixing block 331 passes through a first avoidance hole 333 , the end surface of the fixing block 331 is provided with a mounting hole 334 , and the outer surface of the fixing block 331 is provided with a second fixing hole 332 connected to the first avoidance hole 333 .

[0065] See Figure 6 and Figure 7 As shown, in order to enable the connecting block 330 to be fixedly installed on the fixing rod 310, a first avoidance hole 333 is provided on the fixing block 331 and is penetrated on the fixing rod 310, and then can be threadedly connected to the second fixing hole 332 by a bolt. As the thread continues to be screwed, its end will abut against the outer surface of the fixing rod 310, thereby achieving the fixation of the fixing block 331. In this embodiment, there are at least two second fixing holes 332 on the outer surface of the fixing block 331, and the two second fixing holes 332 are evenly distributed on the outer surface of the fixing block 331.

[0066] The limiting member 400 includes a mounting plate 410 fixedly mounted on the connecting block 330 . An arc-shaped plate 420 is provided on the outer surface of the mounting plate 410 . Both ends of the arc-shaped plate 420 are provided with guide plates 430 facing away from the fixing rod 310 .

[0067] See Figure 6 and Figure 8 As shown, the defined gap 600 is defined and formed between the arc plate 420 and the rotating roller 320. In order to enable the pole tabs of the battery cell pole pieces to smoothly enter the defined gap 600, the pole tabs entering the defined gap 600 are guided by the guide plate 430, and in order to prevent the pole tabs from colliding with the ends of the guide plate 430, the guide plate 430 is designed to be warped, that is, it is warped in the opposite direction away from the rotating roller 320, thereby increasing the entrance of the pole tabs.

[0068] In this embodiment, the curvature of the arc-shaped plate 420 matches the surface shape of the rotating roller 320 , that is, the curvatures of the two are the same.

[0069] A second avoidance hole 440 adapted to the fixing rod 310 is formed through the end surface of the mounting plate 410 . The end surface of the mounting plate 410 is further formed with at least one adjustment mounting slot hole 450 .

[0070] See Figure 7 and Figure 8As shown, in order to adjust the gap between the arc plate 420 and the rotating roller 320 and facilitate the installation of the mounting plate 410, a mounting hole 334 is opened on the end face of the fixed block 331, and then the mounting plate 410 is fitted to the fixed block 331, and then a bolt is passed through the adjusting mounting slot 450 and threaded into the mounting hole 334, so that the mounting plate 410 is fixedly connected to the fixed block 331; further, in order to adjust the gap between the arc plate 420 and the rotating roller 320 to limit the gap 600, the adjusting mounting slot 450 is set to a waist-shaped groove, and accordingly, in order to enable the mounting plate 410 to move, the second avoidance hole 440 is also set to a waist-shaped groove, so that the gap between the arc plate 420 and the rotating roller 320 can be adjusted.

[0071] In this embodiment, there are two adjustment and installation slot holes 450 and two installation holes 334 , and the installation holes 334 may be threaded holes.

[0072] The present application also provides a winding device, which is mainly used for winding electrode sheets into battery cells, and includes the tensioning adjustment device described in any one of the above items.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0074] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A tension adjustment device, characterized in that: include: A driving device (100); a rotating frame (200), the rotating frame (200) being connected to a rotating end of the driving device (100), and the driving device (100) being used to drive the rotating frame (200) to rotate; a tensioning roller (300), the tensioning roller (300) being mounted on the rotating frame (200), the axis of the tensioning roller (300) being parallel to the rotation axis of the rotating frame (200); A limiting member (400) is located at an outer circumferential position of the tensioning roller (300), and a limited gap (600) is formed between the limiting member (400) and the outer circumferential surface of the tensioning roller (300).

2. The tension adjustment device according to claim 1, characterized in that: The driving device (100) comprises: A driving member (110); A swing rod (120), the swing rod (120) is located at the power output end of the driving member (110), and the rotating frame (200) is connected to the swing rod (120); a transmission member (130), the transmission member (130) being connected to the power end of the driving member (110), and the driving member (110) driving the swinging rod (120) to rotate via the transmission member (130); An angle limiting structure (140), wherein the angle limiting structure (140) limits the rotation angle of the swing rod (120).

3. The tension adjustment device according to claim 2, characterized in that: The angle limiting structure (140) comprises a fixing frame (141), the swinging rod (120) is rotatably mounted on the fixing frame (141), an accommodating cavity (142) is defined inside the fixing frame (141), a swinging block (143) is fixedly mounted on the outer surface of the swinging rod (120) located in the accommodating cavity (142), and a blocking rod (144) is fixedly mounted on the fixing frame (141), and the blocking rod (144) is used to block the swinging block (143) when it rotates to a preset angle.

4. The tension adjustment device according to claim 3, characterized in that: A connecting structure (145) is provided between the swing block (143) and the swing rod (120); the connecting structure (145) includes a connecting groove (1451) provided on the swing block (143) and a limiting plane (1452) provided on the outer surface of the swing rod (120); the swing rod (120) passes through the connecting groove (1451) and is connected to the limiting plane (1452); a first fixing hole (1453) is provided on the outer surface of the swing block (143); a fastener capable of abutting against the limiting plane (1452) is installed in the first fixing hole (1453).

5. The tension adjustment device according to claim 1, characterized in that: The tensioning roller (300) comprises a fixed rod (310) fixedly mounted on the rotating frame (200); a rotating roller (320) is rotatably mounted on the outer surface of the fixed rod (310); connecting blocks (330) are fixedly mounted on the fixed rod (310) at both ends of the rotating roller (320); and the limiting member (400) is mounted on at least one of the connecting blocks (330).

6. The tension adjustment device according to claim 5, characterized in that: The connecting block (330) comprises a fixing block (331), wherein the axis of the central position of the fixing block (331) passes through a first avoidance hole (333), an end surface of the fixing block (331) is provided with a mounting hole (334), and an outer peripheral surface of the fixing block (331) is provided with a second fixing hole (332) communicating with the first avoidance hole (333).

7. The tension adjustment device according to claim 5, characterized in that: The limiting member (400) comprises a mounting plate (410) fixedly mounted on the connecting block (330); an arc-shaped plate (420) is provided on the outer surface of the mounting plate (410); and guide plates (430) facing away from the fixing rod (310) are provided at both ends of the arc-shaped plate (420).

8. The tension adjustment device according to claim 7, characterized in that: A second avoidance hole (440) adapted to the fixing rod (310) is provided through the end surface of the mounting plate (410), and at least one adjustment mounting slot hole (450) is also provided on the end surface of the mounting plate (410).

9. The tension adjustment device according to claim 1, characterized in that: A guide roller (500) is provided on a side away from the plane where the rotating frame (200) is located.

10. A winding device, characterized in that: Comprising the tension adjustment device according to any one of claims 1 to 9.

Images