Tension adjusting structure for winding device and winding device thereof

Abstract

The utility model relates to the field of lithium battery production equipment, and discloses a tension adjusting structure for a winding device and the winding device thereof.The tension adjusting structure for the winding device comprises a swing roller which is in transmission connection with a swing assembly; the tension self-adaptive roller is arranged on one side, in the foil conveying direction, of the swing roller, balance seats are arranged at the two ends, in the axis direction, of the tension self-adaptive roller, and the balance seats are rotationally connected with the tension self-adaptive roller; and the balance adjusting assembly is arranged on the balance seat and is used for driving the balance seat to be close to or far away from the foil so as to adjust the tension balance of the foil at the tension self-adaptive roller. The winding device provided by the utility model comprises the tension adjusting structure. In the foil winding process, the tension self-adaption roller adjusts the position of the balance seat through the balance adjusting assembly so that the two ends, in the axis direction, of the tension self-adaption roller can conduct tension balance adjustment correspondingly.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of lithium battery production equipment, and in particular to a tension adjustment structure for a winding device and a winding device thereof. Background Art

[0002] The pole piece is a key component in the battery, mainly including the current collector, active material layer and additives. Among them, foil is usually used as the current collector, and the slurry is coated on the surface of the foil through a coating process to prepare the pole piece. After the foil coating is completed, it is rolled into a material roll for subsequent transportation and processing.

[0003] At present, the coated foil can be wound up by a winding device. In the existing related technology, the winding device includes a hand-adjustable roller. The coated foil is transmitted to the winding reel through the hand-adjustable roller, and is wound up by the winding reel to form a material roll. When the hand-adjustable roller is transmitting the foil, the tension at both ends of the hand-adjustable roller along the axial direction may be unbalanced. It is necessary to manually adjust the position of the two ends of the hand-adjustable roller to make the tension of the foil at the hand-adjustable roller reach a balanced state. However, when manually adjusting the hand-adjustable roller, the machine needs to be stopped for operation, and manual adjustment of the hand-adjustable roller is likely to affect the production efficiency of the electrode. Utility Model Content

[0004] The utility model aims to provide a tension adjustment structure for a winding device and a winding device thereof. During the winding process of the foil material, the tension adaptive roller adjusts the position of the balance seat through a balance adjustment component so that the tension at both ends of the tension adaptive roller along the axial direction can be balancedly adjusted respectively.

[0005] In a first aspect, the utility model provides a tension adjustment structure for a winding device, comprising:

[0006] A swing roller, drivingly connected to a swing assembly; and

[0007] A tension self-adapting roller is arranged on one side of the swing roller along the foil conveying direction, and a balancing seat is arranged at both ends of the tension self-adapting roller along the axis direction, and the balancing seat is rotatably connected to the tension self-adapting roller;

[0008] The balance adjustment component is arranged on the balance seat and is used to drive the balance seat to approach or move away from the foil material so as to adjust the tension balance of the foil material at the tension self-adapting roller.

[0009] In a preferred embodiment, the balance adjustment component includes:

[0010] A slide rail, arranged on one side of the balancing seat;

[0011] The adjusting block is slidably connected to the slide rail, the adjusting block is connected to the balancing seat, the adjusting block is transmission-connected with an adjusting drive assembly, and the adjusting drive assembly is used to drive the adjusting block to approach or move away from the foil.

[0012] In a further preferred embodiment, the adjustment drive assembly includes a ball screw, the ball screw is threadedly connected to the adjustment block, and the ball screw is transmission-connected to a servo motor.

[0013] In a preferred embodiment, the swing assembly comprises:

[0014] A swing shaft, arranged on one side of the swing roller;

[0015] The swing arm is arranged between the swing shaft and the swing roller. The swing shaft and the swing roller are respectively rotatably connected to the swing arm. The swing arm is transmission-connected with a swing driving member. The swing arm drives the swing roller to swing around the axis of the swing shaft.

[0016] In a second aspect, a winding device of the utility model comprises the tension adjustment structure for the winding device described above.

[0017] In a preferred embodiment, a tension detection component is provided on a side of the swing arm away from the tension adaptive roller.

[0018] In a further preferred embodiment, the tension detection assembly comprises a tension roller, and the tension roller is provided with a detection member for detecting the tension of the foil.

[0019] In a preferred embodiment, a clamping head assembly for fixing the winding reel is provided on one side of the tension self-adapting roller.

[0020] In a further preferred embodiment, the chuck assembly comprises:

[0021] vent shaft; and

[0022] A connector having a connecting groove, wherein the connector is connected to the ventilation shaft at the connecting groove;

[0023] The tension block is arranged in the connecting groove. The tension block is retracted to slide out of or into the connecting groove. When the tension block slides out of the connecting groove, the tension block abuts against the inner wall of the winding drum.

[0024] In a further preferred embodiment, a frame is provided on one side of the tension self-adapting roller, a rotating frame is rotatably provided on the frame, and a winding area is formed between the rotating frame and the tension self-adapting roller;

[0025] The chuck assemblies are arranged in a plurality of groups, and the chuck assemblies are all arranged on the rotating frame. The rotating frame drives the chuck assemblies to rotate, so that the chuck assemblies rotate alternately to the winding area.

[0026] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0027] 1. The utility model is a tension adjustment structure for a winding device. After the foil is coated, it is conveyed by a swing roller. The swing assembly drives the swing roller to swing, and the foil realizes overall tension adjustment at the swing roller. The swing roller conveys the foil to the tension adaptive roller. The balance adjustment assembly drives the balance seat to approach or move away from the foil to realize the tension balance at both ends of the tension adaptive roller along the axis direction, which is conducive to improving the flexibility and accuracy of tension adjustment.

[0028] 2. The utility model provides a winding device, which can ensure the balance of tension of the foil during the winding process through the tension adjustment structure described above. Compared with the existing manual adjustment roller, it can reduce the influence of the tension balance adjustment on the production efficiency of the electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a side view of a tension adjustment structure for a winding device in a specific embodiment of the utility model;

[0030] Figure 2 It is a structural schematic diagram of a tension adaptive roller, a balancing seat and a balancing adjustment component in a specific embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of a swing roller and a swing assembly in a specific embodiment of the utility model;

[0032] Figure 4 It is a structural schematic diagram of a winding device in a specific embodiment of the utility model;

[0033] Figure 5 It is a structural schematic diagram of a chuck assembly in a specific embodiment of the utility model;

[0034] Figure 6 It is a side view of the clamp assembly of a specific embodiment of the utility model when the tension block is expanded.

[0035] Reference numerals:

[0036] 1-swing roller; 11-swing assembly; 111-swing shaft; 112-swing arm; 113-swing drive; 12-roller; 2-tension adaptive roller; 21-balance seat; 22-balance adjustment assembly; 221-mounting plate; 222-slide rail; 223-adjustment block; 224-adjustment drive assembly; 2241-ball screw; 2242-servo motor; 2243-diaphragm coupling; 3-tension roller; 31-detection part; 4-chuck assembly; 41-ventilation shaft; 42-connector; 421-connection groove; 43-tension block; 5-frame; 51-rotating frame; 52-winding area; 53-guide roller; 531-first roller body; 532-second roller body; 6-foil. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0039] Embodiment 1:

[0040] The utility model discloses a tension regulating structure for a winding device, which can be used in the winding, unwinding and processing of pole pieces and film materials to adjust the tension balance during the transportation of pole pieces and film materials.

[0041] The utility model is a tension adjustment structure for a winding device, referring to Figure 1 and Figure 2, including a swing roller 1, which is specifically arranged horizontally, and a swing assembly 11 is arranged on one side of the swing roller 1 to drive the swing roller 1 to swing, thereby adjusting the tension of the foil 6. In a preferred embodiment, the swing assembly 11 includes a swing shaft 111, specifically, the swing shaft 111 is arranged parallel to the swing roller 1, and both ends of the swing shaft 111 along the axial direction are sleeved with swing arms 112, and the swing arm 112 is rotatably connected to the swing shaft 111. One end of the swing arm 112 away from the swing shaft 111 is rotatably connected to the corresponding end of the swing roller 1, and one side of the swing arm 112 is transmission-connected with a swing driving member 113, and the swing driving member 113 is preferably but not limited to a cylinder, wherein the piston rod end of the cylinder is hinged to the swing arm 112, so that when the piston rod of the cylinder is extended and retracted, it can drive the end of the swing arm 112 away from the swing shaft 111 to swing around the axis of the swing shaft 111, and at this time, the swing arm 112 drives the swing roller 1 to swing. As shown in some specific embodiments, buffers are provided on both sides of the swing arm 112 in the swing direction, and the buffers have a limiting and buffering effect on the swing of the swing arm 112.

[0042] A passing roller 12 is disposed on one side of the swing roller 1. Specifically, the passing roller 12 is disposed parallel to the swing roller 1. The foil 6 is transferred to the passing roller 12 via the swing roller 1. Figure 1 and Figure 3 A tension adaptive roller 2 is arranged on one side of the roller 12, and the tension adaptive roller 2 is arranged horizontally. Balance seats 21 are arranged at both ends of the tension adaptive roller 2 along the axial direction, and the balance seat 21 is rotatably connected to the tension adaptive roller 2. Specifically, a bearing is arranged between the balance seat 21 and the tension adaptive roller 2 to realize the rotational connection between the balance seat 21 and the tension adaptive roller 2.

[0043] A balance adjustment assembly 22 is provided on one side of the balance seat 21. In a preferred embodiment, the balance adjustment assembly 22 includes a mounting plate 221, which is provided on one side of the balance seat 21. A slide rail 222 is installed on the mounting plate 221. Specifically, the slide rail 222 is vertically provided. An adjustment block 223 is provided on the slide rail 222. The adjustment block 223 is slidably connected to the slide rail 222, and the adjustment block 223 is connected to the balance seat 21. The adjustment block 223 is transmission-connected to an adjustment drive assembly 224, which can drive the adjustment block 223 to slide and adjust along the slide rail 222. Further, the adjustment drive assembly 224 includes a ball screw 2241, which is passed through the adjustment block 223 and threadedly connected to the adjustment block 223. One end of the ball screw 2241 along the axial direction is transmission-connected to a servo motor 2242. As shown in some specific embodiments, a diaphragm coupling 2243 is provided between the ball screw 2241 and the output end of the servo motor 2242 .

[0044] Reference Figures 1 to 3The foil 6 is sequentially transferred to the tension adaptive roller 2 through the swing roller 1 and the over roller 12. When the foil 6 is transferred to the swing roller 1, the swing driving member 113 drives the swing arm 112 to rotate around the axis of the swing shaft 111, and the swing arm 112 drives the swing roller 1 to swing, and the swing roller 1 adjusts the tension of the foil 6. When the foil 6 is transferred to the tension adaptive roller 2 through the roller 12, when the servo motor 2242 drives the ball screw 2241 to rotate, the adjustment block 223 slides along the slide rail 222, and then can drive the corresponding ends of the balance seat 21 and the tension adaptive roller 2 to approach or move away from the foil 6, so as to adjust the tension of the foil 6 at the corresponding ends of the tension adaptive roller 2. The tension of the tension adaptive roller 2 is adjusted at both ends along the axis direction, and the foil 6 achieves tension balance at the tension adaptive roller 2. The tension adaptive roller 2 is fine-tuned by the balance adjustment component 22, which can improve the accuracy of tension balance adjustment, and can solve the problem of low production efficiency caused by the need to stop the existing manual adjustment roller when manually adjusting the tension balance.

[0045] Embodiment 2:

[0046] The utility model provides a winding device which can carry out a winding operation on the coated foil material 6 and ensure that the tension of the foil material 6 is balanced during the winding process.

[0047] The utility model is a winding device, referring to Figure 1 and Figure 4 , including a frame 5, one side of the frame 5 is provided with the tension adjustment structure described in the above embodiment, wherein a tension roller 3 is provided on the side of the swing roller 1 away from the roller 12, and both ends of the tension roller 3 along the axis direction are provided with detection members 31 for detecting the tension of the foil 6. The detection member 31 is preferably, but not limited to, a tension sensor, and the tension sensor is connected to a PLC, and the PLC is connected to a servo motor 2242. When the tension sensor senses that there is an abnormal fluctuation in the tension of the foil 6, the tension sensor sends a signal to the PLC, and the PLC receives the abnormal signal sent by the tension sensor. After determining the abnormality, the PLC sends a signal to the servo motor 2242, and the servo motor 2242 receives the signal and drives the ball screw 2241 to adjust the positions of the corresponding ends of the balance seat 21 and the tension adaptive roller 2, thereby achieving tension balance adjustment.

[0048] In a preferred embodiment, a clamping head assembly 4 for fixing the winding reel is provided on the side of the tension adaptive roller 2 away from the roller 12. Figure 5The chuck assembly 4 includes a vent shaft 41, which is disposed on the frame 5. Specifically, the vent shaft 41 is disposed horizontally. A connector 42 is sleeved on one end of the vent shaft 41 along the axial direction. A connecting groove 421 is provided on the connector 42. Specifically, the connecting groove 421 is an annular groove. A plurality of tensioning blocks 43 are slidably disposed in the connecting groove 421. The plurality of tensioning blocks 43 are disposed in the connecting groove 421 around the axis of the vent shaft 41. Figure 6 The connecting head 42 and the tensioning block 43 are inserted into the winding drum. After air is taken into the vent shaft 41, some tensioning blocks 43 partially slide out of the connecting groove 421. At this time, the tensioning blocks 43 are in an expanded state, and the tensioning blocks 43 abut against the inner wall of the winding drum, so that the winding drum is fixed.

[0049] Embodiment 3:

[0050] In order to improve the convenience of replacing the winding reel, the difference between this embodiment and the above embodiment is that the chuck assembly 4 is provided with several groups, such as in some specific embodiments shown, referring to Figure 1 , the chuck assembly 4 is provided with two groups. It can be understood that the number of the chuck assembly 4 is not specifically limited here, and the relevant technical personnel can replace or improve it on this basis. For example, in some embodiments, the number of the chuck assembly 4 can also be three groups.

[0051] The two groups of chuck assemblies 4 are arranged opposite to each other, and a rotating frame 51 is arranged between the frame 5 and the two groups of chuck assemblies 4, and the rotating frame 51 is rotatably connected to the frame 5. Specifically, the rotating frame 51 is transmission-connected with a rotating driving member, wherein the rotating driving member is preferably but not limited to a motor to drive the rotating frame 51 to rotate relative to the frame 5. A winding area 52 is formed between the rotating frame 51 and the tension adaptive roller 2, and the winding reel is wound in the winding area 52. The rotating frame 51 drives the two groups of chuck assemblies 4 to rotate, so that the two groups of chuck assemblies 4 rotate alternately to the winding area 52.

[0052] Specifically, the two groups of chuck assemblies 4 are respectively a first chuck assembly 4 located in the winding area 52, and a second chuck assembly 4 located outside the winding area 52. When the winding reel at the first chuck assembly 4 completes the winding of the foil 6, the next empty winding reel is placed on the second chuck assembly 4. The rotating frame 51 drives the first chuck assembly 4 and the second chuck assembly 4 to rotate, so that the second chuck assembly 4 rotates into the winding area 52. After the first chuck assembly 4 is away from the winding area 52, it can be unloaded and transported to the subsequent processing steps, and the winding reel at the second chuck assembly 4 winds the foil 6. Through the setting of the rotating frame 51, the first chuck assembly 4 and the second chuck assembly 4 alternately fix the winding reel to wind the foil 6, which is conducive to improving the production efficiency of the electrode.

[0053] Furthermore, the rotating frame 51 is provided with a guide roller 53 (refer to Figure 4 ), specifically, the guide roller 53 is arranged parallel to the ventilation shaft 41, and the guide roller 53 includes a first roller body 531 and a second roller body 532. The first roller body 531 is arranged on one side of the first chuck assembly 4 along the rotation direction, and the second roller body 532 is arranged on one side of the second chuck assembly 4 along the rotation direction. The first roller body 531 and the second roller body 532 are both arranged on the rotating frame 51, and the rotating frame 51 drives the first roller body 531 and the second roller body 532 to rotate. During the winding process of the foil material 6, the guide roller 53 transmits the foil material 6.

[0054] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0055] In the embodiments of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the utility model product is usually placed when in use, rather than indicating or implying that the structure or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model, let alone an indication or implication of relative importance. In addition, the terms "first", "second", etc. are used only for descriptive purposes and are only for the convenience of distinction, and cannot be understood as indicating or implying relative importance.

[0056] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0057] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A tension adjustment structure for a winding device, characterized in that: include: A swing roller (1) is drivingly connected to a swing assembly (11); as well as A tension self-adapting roller (2) is arranged on one side of the swing roller (1) along the foil material (6) conveying direction, and a balancing seat (21) is arranged at both ends of the tension self-adapting roller (2) along the axial direction, and the balancing seat (21) is rotatably connected to the tension self-adapting roller (2); The balance adjustment component (22) is arranged on the balance seat (21) and is used to drive the balance seat (21) to move closer to or farther away from the foil (6) so as to adjust the tension balance of the foil (6) at the tension adaptive roller (2).

2. A tension adjustment structure for a winding device according to claim 1, characterized in that: The balance adjustment component (22) comprises: A slide rail (222) is provided on one side of the balancing seat (21); The adjusting block (223) is slidably connected to the slide rail (222), the adjusting block (223) is connected to the balancing seat (21), the adjusting block (223) is drivingly connected to an adjusting drive assembly (224), and the adjusting drive assembly (224) is used to drive the adjusting block (223) to move closer to or away from the foil (6).

3. A tension adjustment structure for a winding device according to claim 2, characterized in that: The adjustment drive assembly (224) comprises a ball screw (2241), the ball screw (2241) is threadedly connected to the adjustment block (223), and the ball screw (2241) is transmission-connected to a servo motor (2242).

4. The tension adjustment structure for a winding device according to claim 1, characterized in that: The swing assembly (11) comprises: A swing shaft (111) is arranged on one side of the swing roller (1); A swing arm (112) is arranged between the swing shaft (111) and the swing roller (1); the swing shaft (111) and the swing roller (1) are respectively rotatably connected to the swing arm (112); the swing arm (112) is transmission-connected to a swing driving member (113); the swing arm (112) drives the swing roller (1) to swing around the axis of the swing shaft (111).

5. A winding device, characterized in that: The invention comprises a tension adjustment structure for a winding device as claimed in any one of claims 1 to 4.

6. A winding device according to claim 5, characterized in that: A tension detection component is provided on the side of the swing arm (112) away from the tension self-adapting roller (2).

7. A winding device according to claim 6, characterized in that: The tension detection assembly comprises a tension roller (3), on which a detection element (31) for detecting the tension of the foil material (6) is arranged.

8. A winding device according to claim 6, characterized in that: A clamping head assembly (4) for fixing the winding reel is provided on one side of the tension self-adapting roller (2).

9. A winding device according to claim 8, characterized in that: The chuck assembly (4) comprises: a vent shaft (41); and A connecting head (42) is provided with a connecting groove (421), and the connecting head (42) is connected to the ventilation shaft (41) at the connecting groove (421); The tension block (43) is arranged in the connecting groove (421). The tension block (43) is retracted to slide out of or into the connecting groove (421). When the tension block (43) slides out of the connecting groove (421), the tension block (43) abuts against the inner wall of the winding drum.

10. A winding device according to claim 8, characterized in that: A frame (5) is provided on one side of the tension self-adapting roller (2), a rotating frame (51) is rotatably provided on the frame (5), and a winding area (52) is formed between the rotating frame (51) and the tension self-adapting roller (2); The chuck assemblies (4) are provided in a plurality of groups, and the plurality of chuck assemblies (4) are all provided on the rotating frame (51). The rotating frame (51) drives the plurality of chuck assemblies (4) to rotate, so that the plurality of chuck assemblies (4) rotate alternately to the winding area (52).

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