Pole piece rewinding device

Abstract

The utility model relates to the field of lithium battery production equipment, and discloses a pole piece rewinding device, which comprises an unwinding shaft group, a winding shaft group, a winding shaft group and a winding shaft group, the first tape splicing platform is arranged on one side of the unwinding shaft along the conveying direction of the pole piece; the second tape connecting platform is arranged on one side of the first tape connecting platform in the pole piece conveying direction, a tape penetrating assembly used for conveying the pole piece is arranged between the first tape connecting platform and the second tape connecting platform, and a guide roller is arranged on one side of the first tape connecting platform in the pole piece conveying direction; the winding shaft set is arranged on the side, away from the first tape connecting platform, of the guide roller and comprises a waste material winding shaft and a qualified material winding shaft. According to the pole piece rewinding device, defective pole pieces and qualified pole pieces can be wound in a partitioned mode, the convenience of winding operation is improved, and then the production efficiency of the pole pieces is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of lithium battery production equipment, and in particular to a pole piece rewinding device. Background Art

[0002] The pole piece is the core component of the positive and negative electrodes of lithium batteries. During the production process of the pole piece, the pole pieces wound into a roll may have qualified pole pieces and defective pole pieces. In the related prior art, in order to remove the defective pole pieces in the finished roll, the pole piece rewinding device can usually be used to unwind the finished roll, remove the defective pole pieces, and then rewind the qualified pole pieces.

[0003] The existing rewinding device includes an unwinding shaft for placing the finished material roll, a tape splicing platform is arranged on one side of the unwinding shaft along the direction of the pole piece conveying, and a rewinding shaft is arranged on the side of the tape splicing platform away from the unwinding shaft. The finished material roll is unwound at the unwinding shaft, and when the pole piece is conveyed to the tape splicing platform, the worker cuts the defective pole piece from the finished material roll to remove the defective pole piece.

[0004] However, during the winding process, when the qualified electrode sheet roll is placed on the winding shaft, the remaining qualified electrode sheets are bonded to each other and wound onto the winding shaft; when the defective electrode sheet roll is placed on the winding shaft, the defective electrode sheets are bonded to each other and wound onto the winding shaft. The repeated replacement of qualified electrode sheet rolls and defective electrode sheet rolls makes the production operation of electrode sheet rewinding cumbersome, resulting in reduced production efficiency of the electrode sheets. Utility Model Content

[0005] The purpose of the utility model is to provide a pole piece rewinding device. After the pole piece is unwound by the pole piece unwinding shaft, the waste material rewinding shaft rewinds the defective pole piece, and the qualified material rewinding shaft rewinds the qualified pole piece. The defective pole piece and the qualified pole piece are rewound in different areas, which is beneficial to improve the convenience of the rewinding operation and thus improve the production efficiency of the pole piece.

[0006] The utility model discloses a pole piece rewinding device, comprising:

[0007] An unwinding shaft group, comprising a lead unwinding shaft and a pole piece unwinding shaft, wherein the lead unwinding shaft is used to unwind the lead, and the pole piece unwinding shaft is used to unwind the pole piece;

[0008] A first tape connection platform is provided on one side of the unwinding shaft along the transmission direction of the pole piece;

[0009] A second tape connection platform is provided on one side of the first tape connection platform along the pole piece conveying direction, and a guide roller is provided on one side of the first tape connection platform along the pole piece conveying direction;

[0010] The reel assembly is arranged on the side of the guide roller away from the first tape connection platform, and comprises a waste reel and a qualified material reel. The waste reel is used to reel in defective pole pieces, and the qualified material reel is used to reel in qualified pole pieces.

[0011] In a preferred embodiment, a winding and pressing belt assembly is provided between the guide roller and the winding shaft group.

[0012] In a further preferred embodiment, the belt-winding and pressing assembly comprises:

[0013] A first winding belt holding roller; provided between the guide roller and the scrap winding shaft, the first winding belt holding roller is provided with a first winding belt holding plate on one side of the conveying defective pole piece, the first winding belt holding plate is transmission-connected to a first winding belt holding driving member for driving the first winding belt holding plate to approach or move away from the first winding belt holding roller;

[0014] The second winding belt pressing roller is arranged between the guide roller and the qualified material winding shaft, and the second winding belt pressing roller is provided with a second winding belt pressing plate on the side for transmitting the qualified electrode piece, and the second winding belt pressing plate is transmission-connected to the second winding belt pressing driving member for driving the second winding belt pressing plate to approach or move away from the second winding belt pressing roller.

[0015] In a preferred embodiment, an unwinding belt pressing roller is arranged between the first belt connecting platform and the belt unwinding shaft, and an unwinding belt pressing plate is arranged on one side of the conveying belt of the unwinding belt pressing roller, and the unwinding belt pressing plate is transmission-connected to an unwinding belt pressing driving member for driving the unwinding belt pressing plate to approach or move away from the unwinding belt pressing roller.

[0016] In a preferred embodiment, a buffer roller group for adjusting unwinding tension and rewinding tension is provided between the first belt connection platform and the second belt connection platform.

[0017] In a further preferred embodiment, the cache roller group includes:

[0018] An unwinding swing roller is arranged on one side of the first tape connection platform along the conveying direction of the pole piece, and the unwinding swing roller is transmission-connected to an unwinding swing member for driving the unwinding swing roller to swing;

[0019] The winding swing roller is arranged on one side of the unwinding swing roller along the conveying direction of the pole piece, and the winding swing roller is transmission-connected to a winding swing member for swinging the winding swing roller.

[0020] In a further preferred embodiment, a traction roller is arranged between the unwinding swing roller and the winding swing roller, a rubber roller is arranged on one side of the traction roller, and the traction roller cooperates with the rubber roller to clamp and deliver the electrode.

[0021] In a preferred embodiment, an unwinding tension adjustment component is arranged between the first tape connection platform and the unwinding shaft group.

[0022] In a further preferred embodiment, the unwinding tension adjustment assembly includes an unwinding adjustment roller, one end of the unwinding adjustment roller along the pole piece transmission direction is connected to a first unwinding hand-adjustable linear slide for driving the unwinding adjustment roller to approach or move away from the pole piece, and the other end is connected to a second unwinding hand-adjustable linear slide for driving the unwinding adjustment roller to approach or move away from the first tape connecting platform.

[0023] In a further preferred embodiment, a color mark detection member is provided between the unwinding shaft assembly and the first tape connection platform.

[0024] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0025] The utility model discloses a pole piece rewinding device, wherein a pole piece unwinding shaft unwinds the pole piece, a lead tape unwinding shaft unwinds the lead tape, and when the lead tape and the pole piece are transmitted to a first tape connection platform, the lead tape and the pole piece are flatly connected with a transparent tape, and the pole piece is connected to a tape threading assembly through the lead tape, thereby improving the problem of pole piece waste when the pole piece is connected to the tape threading assembly.

[0026] When the pole piece is conveyed to the second tape connection platform through the tape threading assembly, the defective pole piece is manually removed, and the defective pole piece is led to the waste material reel through the guide roller, and the waste material reel reels the defective pole piece, and the qualified pole piece is led to the qualified material reel through the guide roller, and the qualified material reel reels the qualified pole piece. The setting of the qualified material reel and the waste material reel can realize the partitioned reeling of the defective pole piece and the qualified pole piece, which is conducive to improving the convenience of pole piece rewinding and thus improving the production efficiency of the pole piece compared with the existing operation of repeatedly replacing the qualified pole piece reel and the defective pole piece reel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a side view of a pole piece rewinding device in a specific embodiment of the utility model;

[0028] Figure 2 It is a side view of a pole piece rewinding device at an unwinding shaft assembly in a specific embodiment of the utility model;

[0029] Figure 3 It is a structural schematic diagram of an unwinding adjustment roller in a specific embodiment of the utility model;

[0030] Figure 4 It is a side view of a pole piece rewinding device at a reel assembly in a specific embodiment of the utility model;

[0031] Figure 5 It is a structural schematic diagram of an unwinding swing roller in a specific embodiment of the utility model;

[0032] Figure 6 It is a side view of a pole piece rewinding device at a buffer roller group in a specific embodiment of the utility model;

[0033] Figure 7 It is a side view of a pole piece rewinding device at a deviation correction detection component and a deviation correction execution component in a specific embodiment of the utility model.

[0034] Reference numerals:

[0035] 1-unwinding shaft group; 11-lead unwinding shaft; 12-pole piece release; 2-first tape connection platform; 21-first support roller; 22-color mark detection component; 23-correction detection component; 231-correction execution component; 3-threading component; 31-threading rod; 32-chain; 33-sprocket; 4-second tape connection platform; 41-guide roller; 5-rewinding shaft group; 51-waste material rewinding shaft; 511-broken tape magnetic suction component; 52-qualified material rewinding shaft; 53-rewinding adjustment roller; 54-first rewinding adjustment roller; 55-second rewinding adjustment roller; 6-first rewinding belt pressing roller; 61-first rewinding belt pressing plate; 62-first rewinding belt pressing drive Moving part; 63-second winding belt holding roller; 64-second winding belt holding plate; 65-second winding belt holding driving assembly; 7-buffer roller group; 71-second supporting roller; 72-unwinding swing roller; 721-unwinding swing member; 7211-installing shaft; 7212-connecting plate; 7213-swing arm; 7214-swing cylinder; 73-winding swing roller; 731-winding swing member; 74-traction roller; 75-rubber roller; 76-unwinding tension roller; 77-winding tension roller; 78-guide roller; 79-third supporting roller; 8-unwinding adjustment roller; 81-first hand-adjustable linear slide; 82-second hand-adjustable linear slide; 9-frame. DETAILED DESCRIPTION

[0036] 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.

[0037] Embodiment 1:

[0038] The utility model provides a pole piece rewinding device, which can rewind defective pole pieces and qualified pole pieces in pole piece material rolls in different areas, thereby improving the convenience of rewinding operation and realizing rapid rewinding of pole pieces.

[0039] Reference Figure 1 A pole piece rewinding device of the utility model includes a reel group 1, and the reel group 1 includes a lead tape reel 11 and a pole piece reel 12. Specifically, the lead tape reel 11 is horizontally arranged, and the pole piece reel 12 is parallelly arranged relative to the lead tape reel 11. The pole piece reel 12 is located at the bottom of the lead tape reel 11, wherein the lead tape reel 11 is used to reel paper tape, and the pole piece reel can be used to reel positive pole pieces or negative pole pieces.

[0040] Reference Figure 2 In a preferred embodiment, a tape unwinding roller is provided on one side of the tape unwinding shaft 11 along the paper tape transmission direction. Specifically, the tape unwinding roller is arranged parallel to the tape unwinding shaft 11. A tape unwinding plate is provided on the tape transmission side of the tape unwinding roller. The tape unwinding plate is specifically a long plate arranged horizontally. A tape unwinding driving member is transmission-connected to the side of the tape unwinding plate away from the tape unwinding roller. The tape unwinding driving member is preferably, but not limited to, an unwinding cylinder. The tape unwinding driving member drives the tape unwinding plate to approach or away from the tape unwinding roller. When the tape unwinding driving member drives the tape unwinding plate to approach the tape unwinding roller, the tape unwinding plate can press the tape unwinding onto the tape unwinding roller to fix the tape unwinding.

[0041] Further, an unwinding adjustment roller 8 is provided on one side of the unwinding pressing roller along the conveying direction of the lead tape, Figure 3 , one end of the unwinding adjustment roller 8 along the axial direction is rotatably connected to a first hand-adjustable linear slide 81, and the other end is rotatably connected to a second hand-adjustable linear slide 82. Among them, the first hand-adjustable linear slide 81 can drive the corresponding end of the unwinding adjustment roller 8 to adjust the position along the vertical direction, so that the unwinding adjustment roller 8 is close to or away from the pole piece; the second hand-adjustable slide can drive the corresponding end of the unwinding adjustment roller 8 to adjust the position along the horizontal direction, so that the unwinding adjustment roller 8 is close to or away from the unwinding shaft group 1. After the lead tape unwinding shaft 11 unwinds the lead tape, the lead tape is transmitted to the unwinding adjustment roller 8 through the unwinding pressure roller, and the pole piece unwinding shaft unwinds the pole piece to the unwinding adjustment roller 8. The unwinding adjustment roller 8 can adjust the tension of the lead tape and the pole piece. Refer to Figure 2 Furthermore, a first support roller 21 is provided on the side of the unwinding adjustment roller 8 away from the unwinding shaft group 1. The first support roller 21 is specifically arranged horizontally to guide and support the lead tape and the pole piece.

[0042] A color mark detection element 22 for detecting bad labels on defective pole pieces is provided on the side of the first support roller 21 away from the unwinding adjustment roller 8. The color mark detection element 22 is preferably, but not limited to, a color mark sensor. The color change sensor is connected to a control system. After detecting a bad label, the color mark detection element 22 can transmit a signal to the control system, and the control system sends a stop signal to facilitate the pole piece to remove the defective pole piece.

[0043] A first tape connection platform 2 is provided on the side of the first support roller 21 away from the unwinding adjustment roller 8. When the leader tape and the pole piece are conveyed to the first tape connection platform 2, the front section of the pole piece is bonded to the leader tape by a transparent tape, and the front section of the pole piece is flatly connected with the front section of the leader tape and a certain distance is ensured. After the pole piece and the leader tape are bonded, the front section of the leader tape is cut off so that only the portion of the leader tape that is bonded to the front section of the pole piece is retained.

[0044] Reference Figure 1A belt threading assembly 3 is provided on the side of the first belt receiving platform 2 away from the first support roller 21. In some specific embodiments shown, the belt threading assembly 3 includes a belt threading rod 31, which is a horizontally arranged round rod and is arranged parallel to the first support roller 21. Chains 32 are provided on both sides of the belt threading rod 31 along the axial direction. The chains 32 are specifically arranged in an annular shape. The chains 32 are connected to the belt threading rod 31, and the chains 32 are meshed and connected with a sprocket 33. After the lead belt is wound on the belt threading rod 31, the sprocket 33 rotates to realize the transmission of the chain 32 and the belt threading rod 31, thereby realizing the transmission of the pole piece.

[0045] Reference Figure 4 A second tape connection platform 4 is provided on the side of the tape threading assembly 3 away from the first support roller 21, and the pole pieces are manually removed on the second tape connection platform 4. A guide roller 41 is provided on the side of the second tape connection platform 4 away from the tape threading assembly 3, and the guide roller 41 is specifically arranged horizontally. A broken tape magnetic suction piece 511 is provided on one side of the guide roller 41, and the broken tape magnetic suction piece 511 can attract the defective pole pieces removed from the first tape connection platform 2 to reduce the possibility of the defective pole pieces falling.

[0046] A reel group 5 is provided on the side of the guide roller 41 away from the second tape connection platform 4, and the reel group 5 includes a waste material reel 51 and a qualified material reel 52. Specifically, the waste material reel 51 is horizontally arranged, and the qualified material reel 52 is parallel to the waste material reel 51, and the qualified material reel 52 is located at the bottom of the waste material reel 51, wherein the waste material reel 51 is used for reeling in defective pole pieces, and the qualified material reel 52 is used for reeling in qualified pole pieces.

[0047] A first winding and pressing roller 6 is arranged between the guide roller 41 and the waste winding shaft 51. The first winding and pressing roller 6 is specifically arranged horizontally. A first winding and pressing plate 61 is arranged on the side of the first winding and pressing roller 6 for conveying the defective pole piece. The first winding and pressing belt is specifically a long plate arranged horizontally. The first winding and pressing plate 61 is connected to the first winding and pressing drive 62 on the side away from the guide roller 41. The first winding and pressing drive 62 preferably but not limited to adopts a first winding and pressing cylinder. The first winding and pressing drive 62 drives the first winding and pressing plate 61 to approach or move away from the first winding and pressing roller 6. When the first winding and pressing drive 62 drives the first winding and pressing plate 61 to approach the first winding and pressing roller 6, the first winding and pressing plate 61 can press the defective pole piece onto the first winding and pressing roller 6 to fix the defective pole piece.

[0048] A second winding belt pressing roller 63 is arranged between the guide roller 41 and the qualified material winding shaft 52. The second winding belt pressing roller 63 is specifically arranged horizontally. The second winding belt pressing roller 63 is provided with a second winding belt pressing plate 64 on the side for transmitting the qualified pole piece. The second winding belt pressing plate is specifically a long plate arranged horizontally. The second winding belt pressing plate 64 is connected to the second winding belt pressing driving member on the side away from the guide roller 41. The second winding belt pressing driving member is preferably but not limited to a second winding belt pressing cylinder. The second winding belt pressing driving member drives the second winding belt pressing plate 64 to approach or move away from the second winding belt pressing roller 63. When the second winding belt pressing driving member drives the second winding belt pressing plate 64 to approach the second winding belt pressing roller 63, the second winding belt pressing plate 64 can press the qualified pole piece onto the second winding belt pressing roller 63 to fix the qualified pole piece.

[0049] A first winding adjustment roller 54 is provided between the first winding pressure roller 6 and the scrap winding shaft 51. In the embodiment of the present application, the first winding adjustment roller 54 has the same structure as the unwinding adjustment roller 8. The first winding adjustment roller 54 can adjust its position in the vertical direction to get close to or away from the defective pole piece, and can adjust its position in the horizontal direction to get close to or away from the winding shaft group 5, thereby adjusting the winding tension of the defective pole piece. A second winding adjustment roller 55 is provided between the second winding pressure roller 63 and the qualified material winding shaft 52. The second winding adjustment roller 55 has the same structure as the unwinding adjustment roller 8. The second winding adjustment roller 55 can adjust its position in the vertical direction to get close to or away from the qualified pole piece, and can adjust its position in the horizontal direction to get close to or away from the winding shaft group 5, thereby adjusting the winding tension of the qualified pole piece.

[0050] Reference Figure 1 to Figure 4 During the rewinding process of the electrode, the lead tape unwinding shaft 11 unwinds the lead tape, and the lead tape is sequentially transferred to the first tape connection platform 2 via the winding and pressing roller, the unwinding adjustment roller 8 and the first support roller 21. The electrode unwinding shaft unwinds the electrode, and the electrode is sequentially transferred to the first tape connection platform 2 via the unwinding adjustment roller 8 and the first support roller 21. The electrode and the lead tape are bonded at the first tape connection platform 2, and the lead tape is wound on the threading rod 31. The threading assembly 3 can drive the electrode to be transferred to the second tape connection platform 4.

[0051] When the electrode pieces are conveyed to the second tape connection platform 4, the defective electrode pieces are cut off manually, and the rejected defective electrode pieces are bonded to the waste material roll at the waste material reel 51 by transparent tape, so that when the waste material reel 51 is reeled, the rejected waste electrode pieces can be reeled through the guide roller 41, the first reeling belt holding roller 6 and the first reeling adjustment roller 54. The cut ends of the qualified electrode pieces at both ends of the defective electrode piece cut-off are bonded to each other by transparent tape, and when the qualified material reel 52 is reeled, the qualified electrode pieces can be reeled onto the qualified material reel 52 by the guide roller 41, the second reeling belt holding roller 63 and the second reeling belt holding roller 63 in sequence. The defective electrode pieces and the qualified electrode pieces are reeled in different areas, and the qualified electrode pieces are reeled conveniently, and it is also conducive to the unified collection of the waste electrode pieces, which can improve the production efficiency of the electrode pieces.

[0052] Embodiment 2:

[0053] In order to further adjust the tension during unwinding and rewinding, the difference between this embodiment and embodiment 1 is that, referring to Figure 1 A buffer roller group 7 is provided between the first belt connection platform 2 and the second belt connection platform 4. In a preferred embodiment, referring to Figure 2 The buffer roller group 7 includes a second support roller 71, which is specifically arranged horizontally. The second support roller 71 is located on the side of the first belt connection platform 2 away from the first support roller 21, and the second support roller 71 supports and guides the pole piece.

[0054] A reeling tension roller 76 is arranged on the side of the second support roller 71 away from the first tape connection platform 2. The reeling tension roller 76 is arranged horizontally and parallel to the second support roller 71. A sensor for detecting the reeling tension of the pole piece is installed on the reeling tension roller 76.

[0055] The unwinding tension roller 76 is provided with an unwinding swing roller 72 on one side away from the second support roller 71. The unwinding swing roller 72 is connected to an unwinding swing member 721 for driving the unwinding swing roller 72 to swing. Figure 5 Further, the unwinding swing member 721 includes a mounting shaft 7211, the mounting shaft 7211 is arranged on one side of the unwinding swing roller 72 and is arranged parallel to the unwinding swing roller 72, a connecting plate 7212 is arranged between the mounting shaft 7211 and the unwinding swing roller 72, one end of the connecting plate 7212 close to the mounting shaft 7211 is sleeved on the mounting shaft 7211, and the other end is rotatably connected to the unwinding swing roller 72. Both ends of the mounting shaft 7211 along the axial direction are connected with a swing arm 7213, the swing arm 7213 is specifically in the shape of a long plate, one end of the swing arm 7213 along the length direction is rotatably connected with a swing cylinder 7214, and the piston rod end of the swing cylinder 7214 is transmission-connected with the swing arm 7213. When the piston rod of the swing cylinder 7214 is extended and retracted, it can drive the swing arm 7213 to rotate, and the swing arm 7213 drives the mounting shaft 7211 and the unwinding swing roller 72 to swing, thereby realizing the adjustment of the unwinding tension of the pole piece.

[0056] Reference Figure 1 and Figure 6 A traction roller 74 is provided on the side of the unwinding swing roller 72 away from the second support roller 71. The traction roller 74 is specifically horizontally arranged and parallel to the second support roller 71. A rubber roller 75 is provided on one side of the traction roller 74. The rubber roller 75 is specifically horizontally arranged and parallel to the traction roller 74. When the traction roller 74 rotates, the traction roller 74 and the rubber roller 75 clamp and convey the electrode.

[0057] A winding swing roller 73 is arranged between the traction roller 74 and the second belt connecting platform 4. The winding swing roller 73 is transmission-connected to a winding swing member 731 for driving the winding swing roller 73 to swing. The structure of the winding swing member 731 in the embodiment of the present application is the same as the structure of the above-mentioned unwinding swing member 721. The winding swing member 731 can drive the winding swing roller 73 to swing, thereby realizing the adjustment of the winding tension of the pole piece.

[0058] A winding tension roller 77 is arranged on the side of the winding swing roller 73 away from the traction roller 74. The winding tension roller 77 is specifically arranged horizontally and parallel to the traction roller 74. A sensor for detecting the winding tension of the pole piece is installed on the winding tension roller 77.

[0059] Guide rollers 78 for conveying and guiding the pole piece are arranged between the unwinding tension roller 76 and the unwinding swing roller 72, between the unwinding swing roller 72 and the traction roller 74, between the traction roller 74 and the winding swing roller 73, and between the winding swing roller 73 and the winding tension roller 77. A third support roller 79 is arranged between the second tape connection platform 4 and the unwinding tension roller 76, and the third support roller 79 is arranged parallel to the winding tension roller 77 to support and guide the pole piece entering the second tape connection platform 4.

[0060] Embodiment 3:

[0061] In order to correct the deviation during the unwinding of the pole piece, the difference between this embodiment and the above embodiment is that Figure 7 A deflection correction detection member 23 for detecting the position of the pole piece is arranged between the color change detection member and the first tape connection platform 2. The deflection correction detection member 23 preferably, but not limited to, adopts a deflection correction sensor, and the deflection correction detection member 23 is connected to the control system. A frame 9 is arranged on one side of the pole piece unwinding shaft 12, wherein the unwinding shaft group 1 is arranged on the frame 9. A deflection correction execution component 231 is arranged on one side of the frame 9, and specifically, the deflection correction execution component 231 includes a slider, which is connected to the frame 9, and a slide rail is arranged on the side of the slider away from the frame 9, and the slide rail is slidably connected to the slider. A screw rod is passed through the slider, and the screw rod is threadedly connected to the slider. The screw rod is arranged parallel to the pole piece unwinding shaft 12, and one end of the screw rod along the axial direction is transmission-connected to a deflection correction motor.

[0062] The deflection correction detection component 23 detects the position of the pole piece. When the pole piece has position deviation, the deflection correction detection component 23 sends a signal to the control system, and the control system transmits the signal to the deflection correction execution component 231. The deflection correction execution component 231 can drive the unwinding shaft group 1 to adjust the position along the axial direction of the pole piece unwinding shaft 12, thereby realizing the deflection correction processing of the pole piece.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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 pole piece rewinding device, characterized in that: include: An unwinding shaft group (1) comprises a lead unwinding shaft (11) and a pole piece unwinding shaft (12), wherein the lead unwinding shaft (11) is used for unwinding the lead, and the pole piece unwinding shaft (12) is used for unwinding the pole; A first tape connection platform (2) is arranged on one side of the unwinding shaft along the transmission direction of the pole piece; A second tape connection platform (4) is arranged on one side of the first tape connection platform (2) along the direction of pole piece transmission, a tape threading assembly (3) for transmitting pole pieces is arranged between the second tape connection platform (4), and a guide roller (41) is arranged on one side of the first tape connection platform (2) along the direction of pole piece transmission; The reel assembly (5) is arranged on a side of the guide roller (41) away from the first tape connection platform (2), and comprises a waste material reel (51) and a qualified material reel (52), wherein the waste material reel (51) is used to reel in defective pole pieces, and the qualified material reel (52) is used to reel in qualified pole pieces.

2. A pole piece rewinding device according to claim 1, characterized in that: A belt-winding and pressing assembly is provided between the guide roller (41) and the winding shaft assembly (5).

3. A pole piece rewinding device according to claim 2, characterized in that: The winding and pressing belt assembly comprises: A first winding belt pressing roller (6); arranged between the guide roller (41) and the waste winding shaft (51); the first winding belt pressing roller (6) is provided with a first winding belt pressing plate (61) on one side of the first winding belt pressing roller (6) for conveying defective pole pieces; the first winding belt pressing plate (61) is transmission-connected to a first winding belt pressing driving member (62) for driving the first winding belt pressing plate (61) to approach or move away from the first winding belt pressing roller (6); A second winding belt pressing roller (63) is arranged between the guide roller (41) and the qualified material winding shaft (52); the second winding belt pressing roller (63) is provided with a second winding belt pressing plate (64) on the side for transmitting the qualified electrode piece; the second winding belt pressing plate (64) is transmission-connected to a second winding belt pressing driving member for driving the second winding belt pressing plate (64) to approach or move away from the second winding belt pressing roller (63).

4. A pole piece rewinding device according to claim 1, characterized in that: An unwinding belt pressing roller is arranged between the first belt connecting platform (2) and the belt unwinding shaft (11), and an unwinding belt pressing plate is arranged on one side of the belt conveyor. The unwinding belt pressing plate is transmission-connected to an unwinding belt pressing driving member for driving the unwinding belt pressing plate to approach or move away from the unwinding belt pressing roller.

5. The pole piece rewinding device according to claim 1, characterized in that: A buffer roller group (7) for adjusting unwinding tension and rewinding tension is provided between the first belt connection platform (2) and the second belt connection platform (4), and the belt threading assembly (3) drives the pole piece to be transmitted in the buffer roller group (7).

6. A pole piece rewinding device according to claim 5, characterized in that: The buffer roller group (7) comprises: An unwinding swing roller (72) is arranged on one side of the first tape connection platform (2) along the transmission direction of the pole piece, and the unwinding swing roller (72) is transmission-connected to an unwinding swing member (721) for driving the unwinding swing roller (72) to swing; The winding swing roller (73) is arranged on one side of the unwinding swing roller (72) along the transmission direction of the pole piece, and the winding swing roller (73) is transmission-connected to a winding swing member (731) for swinging the winding swing roller (73).

7. A pole piece rewinding device according to claim 6, characterized in that: A traction roller (74) is arranged between the unwinding swing roller (72) and the winding swing roller (73), a rubber roller (75) is arranged on one side of the traction roller (74), and the traction roller (74) cooperates with the rubber roller (75) to clamp and deliver the electrode sheet.

8. The pole piece rewinding device according to claim 1, characterized in that: A tension adjustment component is arranged between the first tape connection platform (2) and the unwinding shaft group (1).

9. A pole piece rewinding device according to claim 8, characterized in that: The tension adjustment assembly comprises an unwinding adjustment roller (8), one end of the unwinding adjustment roller (8) along the pole piece conveying direction is transmission-connected to a first manually-adjustable linear slide (81) for driving the unwinding adjustment roller (8) to approach or move away from the pole piece, and the other end of the unwinding adjustment roller (8) is transmission-connected to a second manually-adjustable linear slide (82) for driving the unwinding adjustment roller (8) to approach or move away from the first tape connection platform (2).

10. A pole piece rewinding device according to claim 9, characterized in that: A color mark detection component (22) is provided between the unwinding shaft group (1) and the first tape connection platform (2).

Images