Automatic unwinding equipment for coiled material battery pole piece

Abstract

The invention belongs to the technical field of battery pole piece automatic unwinding, and particularly relates to coiled material battery pole piece automatic unwinding equipment which comprises a machine body, a supporting plate is fixedly connected to one side of the machine body, a first motor is fixedly connected to the upper surface of the supporting plate, and a rotating shaft is fixedly connected to the output end of the first motor; a rotating shaft is arranged on the machine body, a winding roller is fixedly connected to the circumferential surface of the rotating shaft, limiting rollers are arranged on the two sides of the machine body, a limiting assembly is arranged on the circumferential surface of the winding roller, the limiting assembly comprises two limiting rings, and the two limiting rings are used for limiting a battery pole piece in the winding and unwinding processes and can limit movement of the battery pole piece; side plates are fixedly connected to the two sides of the machine body, positioning plates are fixedly connected to the surfaces of the two side plates, and the limiting assembly and the flattening assembly are arranged, so that the problem that wrinkles appear at the two ends of a battery roll due to the fact that the edge thickness of an existing battery pole piece is not uniform and the battery pole piece is not limited in the rolling process is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of automatic unwinding of battery pole pieces, in particular to an automatic unwinding device for coiled battery pole pieces. Background Art

[0002] In the current continuous production process of battery electrodes, in order to ensure uniform thickness after rolling, the unwound electrode sheets must be strictly flattened before being sent to the main machine for rolling. They must then be fed into the main machine at a uniform speed and then rolled through the automatic unwinding equipment.

[0003] The existing unwinding process of battery electrodes usually involves winding the battery electrodes after the rolling process is completed, and releasing them during subsequent other processing. First, the flat battery electrodes are sent to the winding area, and the winding machine is driven by a motor to start winding the battery electrodes at a stable speed and tension. As the battery electrodes gradually accumulate, the winding core shaft rotates continuously, and the winding tension is intelligently adjusted according to the thickness of the battery electrodes to maintain the tightness and flatness of the winding. Finally, the wound battery electrode roll will be automatically cut and unloaded, ready for the next step of packaging and storage.

[0004] However, during the process of winding the existing battery electrodes through automatic unwinding equipment, the battery electrodes that have just been rolled may have uneven thickness at the edges, and the edges may not be effectively aligned during winding. This will cause wrinkles to appear at both ends of the wound battery electrodes. During the subsequent unwinding process, when the unwinder re-unwinds these wrinkled battery electrodes, stress concentration points are easily formed at the wrinkles, making it easier for the battery electrodes to deviate from the predetermined path during the unwinding process, resulting in unstable unwinding, which in turn affects the accuracy and efficiency of subsequent cutting, welding and other processes.

[0005] To this end, the present invention provides an automatic unwinding device for coiled battery pole pieces. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the automatic unwinding device for coiled battery pole pieces of the present invention comprises a machine body, a support plate is fixedly connected to one side of the machine body, a first motor is fixedly connected to the upper surface of the support plate, an output end of the first motor is fixedly connected to a rotating shaft, a winding roller is fixedly connected to the circumferential surface of the rotating shaft, and limiting rollers are provided on both sides of the machine body. The circumferential surface of the winding roller is provided with a limiting assembly, and the limiting assembly includes two limiting rings, which are used to limit the position of the battery electrode sheet during the winding and unwinding process, and can limit the movement of the battery electrode sheet; Side plates are fixedly connected to both sides of the body, and positioning plates are fixedly connected to the surfaces of the two side plates. A positioning platform is fixedly connected to the upper surface of one of the positioning plates. A smoothing assembly is provided on the positioning platform. The smoothing assembly includes two fixed half rings that are slidable toward each other. The two fixed half rings can smooth the battery pole pieces with uneven edge thickness. A cleaning assembly is also provided between the two side plates, which is used to clean the glue overflowing from the battery poles after being smoothed. The cleaning assembly includes a connecting shaft rotatably arranged between the two side plates, and a plurality of sponge cleaning plates are fixedly connected to the circumferential surface of the connecting shaft.

[0008] Preferably, the limiting assembly also includes an annular groove provided on the circumferential surface of the winding roller, a rotating ring is rotatably connected in the annular groove, and the roller can rotate in the limiting ring. The rotating limiting ring can limit the battery pole piece being wound and unwound, so that the two ends of the battery pole piece are aligned. A rotating handle is fixed to one side of the limiting ring, and the rotating ring can be manually adjusted by the rotating handle so that the dressing applied by the smoothing assembly can be discharged from the space between the rotating ring and the limiting ring.

[0009] Preferably, two rotating blocks are fixed to the circumferential surface of the rotating ring, and one end of the two rotating blocks is fixed to a sliding block. A rotating groove is provided on the inner wall of the limiting ring, and the rotating ring slides along the rotating groove through the rotating block, thereby limiting and adjusting the battery pole piece.

[0010] Preferably, the cleaning component includes a transmission belt connected to the circumferential surface of the rotating shaft, one end of the transmission belt is connected to a rotating wheel, the middle part of the rotating wheel is fixedly connected to a connecting shaft, and the circumferential surface of the connecting shaft is fixedly connected to a plurality of sponge cleaning plates, which can clean the oil and dust on the surface of the wound battery electrode during the winding process.

[0011] Preferably, the cleaning assembly also includes a storage box fixedly connected to the side of one of the side panels, wherein the storage box stores ethanol solution, a connecting pipe fixedly connected to the lower surface of the storage box, an auxiliary ring fixedly connected to the bottom end of the connecting pipe, the auxiliary ring is rotatably connected to the connecting shaft, and a plurality of spray holes are opened on the circumferential surface of the connecting shaft.

[0012] Preferably, when the connecting shaft rotates, the pressure pump in the storage box is driven to pressurize and spray out the ethanol solution stored inside. The connecting shaft is connected to the connecting pipe of the storage box through an auxiliary ring. The ethanol solution in the storage box is passed into the connecting shaft through the connecting pipe. The auxiliary ring is rotatably connected to the connecting shaft, which does not affect the rotation of the connecting shaft. The ethanol solution can also be passed into the connecting shaft and sprayed out from the spray hole to dissolve and clean the glue on the surface of the battery electrode. An auxiliary roller is rotatably arranged below the connecting shaft. The circumferential surface of the auxiliary roller is also made of sponge material, which can wipe and clean the surface of the battery electrode.

[0013] Preferably, the smoothing assembly also includes a second motor fixedly connected to the upper surface of the positioning platform, the output end of the second motor is fixedly connected to a limiting shaft, the circumferential surface of the limiting shaft is fixedly connected to a fixed wheel, the fixed wheel is transmission-connected with a connecting belt, the second motor is transmission-connected to another limiting shaft through a fixed wheel, the two limiting shafts are reciprocating screws, the circumferential surfaces of the two limiting shafts are slidingly connected to the same top plate, the positioning plate has a limiting groove corresponding to the position of the top plate, which is used to limit the top plate from sliding up and down, auxiliary plates are fixedly connected on both sides of the top plate, and a fixed guide rail is provided on the lower surface of each auxiliary plate, and a fixed hydraulic cylinder is slidably connected in each of the fixed guide rails, and the output end of each fixed hydraulic cylinder is fixedly connected to a fixed half ring, and the fixed half ring is used to smooth the ends of the battery pole pieces with uneven thickness and wipe out excess dressing.

[0014] Preferably, the activation of the two fixed guide rails will drive the fixed hydraulic cylinders that are slidably connected in the fixed guide rails. The two fixed guide rails drive the two fixed hydraulic cylinders to slide toward each other. Before the fixed guide rails drive the fixed hydraulic cylinders to slide, the fixed hydraulic cylinders are started to make the fixed half ring at its output end abut against the battery pole piece on the circumferential surface of the winding roller. At this time, the two fixed guide rails drive the two fixed hydraulic cylinders to move toward each other, which can drive the two fixed half rings to move toward each other, smooth the ends of the wound battery pole piece, and smooth the battery pole piece with uneven thickness at the ends.

[0015] Preferably, the smoothing assembly further comprises a connecting rail provided on one side of the auxiliary plate, wherein a connecting cutter is slidably connected in the connecting rail, and the connecting cutter can cut off the battery electrode dressing smoothed out at both ends.

[0016] Preferably, a rolling roller is rotatably connected between the two auxiliary plates, and the rolling roller can limit the battery pole pieces. A fixed platform is fixedly connected to one side of the top plate, and a first hydraulic cylinder is fixedly connected to the upper surface of the fixed platform. A positioning cutter is fixedly connected to the output end of the first hydraulic cylinder, and the positioning cutter is used to cut the battery pole pieces after winding and unwinding.

[0017] The beneficial effects of the present invention are as follows: 1. The automatic unwinding device for coiled battery pole pieces described in the present invention drives the rotating shaft to rotate by a first motor, thereby driving the winding roller to perform the winding and unwinding operations of the battery pole pieces. A limit assembly is provided on the circumferential surface of the winding roller, which consists of two limit rings. They can limit the movement of the battery pole pieces during the winding and unwinding process to ensure that the battery pole pieces are neat and not offset; on both sides of the machine body, the positioning platform on the positioning plate carries a smoothing assembly, which consists of two fixed half rings arranged to slide toward each other. When the thickness of the edge of the battery pole piece is uneven, the two fixed half rings can It can fit the battery pole piece tightly, smooth its edge by sliding, and improve the flatness of the battery pole piece; in addition, the equipment is also provided with a cleaning component for cleaning the glue that may overflow from the battery pole piece after smoothing. The cleaning component is composed of a connecting shaft and a plurality of sponge cleaning plates fixed on the circumferential surface thereof. As the battery pole piece moves, the sponge cleaning plates can wipe off excess glue to ensure the cleanliness of the battery pole piece surface; the accuracy and efficiency of winding and unwinding the battery pole piece are improved, and the quality of the battery pole piece is further improved by setting the smoothing component and the cleaning component.

[0018] 2. The automatic unwinding equipment for rolled battery electrodes described in the present invention, by adding an annular groove and a rotating ring with a rotatable connection, the rotating ring can rotate within the limit ring, and at the same time cooperate with the limit ring to accurately position the wound and unwound battery electrodes, ensuring that the two ends of the battery electrodes are strictly aligned, and also allowing the excess dressing wiped out by the smoothing component to be smoothly discharged from the tiny space between the rotating ring and the limit ring, avoiding the accumulation and waste of dressing, ensuring the neatness and uniformity of the battery electrode surface, and improving the production quality and efficiency of the battery electrodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of embodiment 1 of the present invention; Figure 2 It is a structural diagram of the main body of the present invention; Figure 3 It is a structural schematic diagram of the leveling assembly of the present invention; Figure 4 It is a schematic structural diagram of the cleaning component of the present invention; Figure 5 It is a structural schematic diagram of the limit assembly of the present invention; In the figure: 1. body; 11. support plate; 12. first motor; 13. rotating shaft; 14. transmission belt; 15. rotating wheel; 16. connecting shaft; 17. winding roller; 18. side plate; 19. positioning plate; 110. positioning platform; 111. second motor; 112. fixed wheel; 113. connecting belt; 114. limiting groove; 115. top plate; 116. fixed platform; 117. first hydraulic cylinder; 118. positioning cutter; 119. auxiliary plate; 120. fixed guide rail; 121. fixed hydraulic cylinder; 122. fixed half ring; 123. connecting guide rail; 124. connecting cutter; 125. rolling roller; 2. Limit roller; 3. Storage box; 31. Auxiliary ring; 32. Connecting pipe; 33. Cleaning plate; 34. Spray hole; 35. Auxiliary roller; 4. Limiting ring; 41. Rotation groove; 42. Rotation ring; 43. Rotation block; 44. Sliding block; 45. Rotation handle; 46. Annular groove; 5. Limit axis. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] Example 1: Figures 1 to 5 As shown, an automatic unwinding device for a coiled battery electrode sheet according to an embodiment of the present invention comprises a body 1, a support plate 11 is fixedly connected to one side of the body 1, a first motor 12 is fixedly connected to the upper surface of the support plate 11, a rotating shaft 13 is fixedly connected to the output end of the first motor 12, a winding roller 17 is fixedly connected to the circumferential surface of the rotating shaft 13, a limiting roller 2 is provided on both sides of the body 1, a limiting assembly is provided on the circumferential surface of the winding roller 17, the limiting assembly comprises two limiting rings 4, the two limiting rings 4 are used to limit the battery electrode sheet during the winding and unwinding process, and can limit the movement of the battery electrode sheet; side plates 1 are fixedly connected to both sides of the body 1 8. Positioning plates 19 are fixed to the surfaces of the two side plates 18, and a positioning platform 110 is fixed to the upper surface of one of the positioning plates 19. A smoothing component is provided on the positioning platform 110. The smoothing component includes two fixed half rings 122 that are slidingly arranged toward each other. The two fixed plate rings can smooth the battery pole pieces with uneven edge thickness; a cleaning component is also provided between the two side plates 18. The cleaning component is used to clean the glue overflowing from the battery pole pieces after smoothing. The cleaning component includes a connecting shaft 16 that is rotatably arranged between the two side plates 18, and a number of sponge cleaning plates are fixed to the circumferential surface of the connecting shaft 16.

[0023] Specifically, during the rewinding of existing battery electrodes by automatic unwinding equipment, the electrode sheets that have just been rolled may have uneven thickness at the edges, and the edges may not be effectively aligned during rewinding, which may cause wrinkles on both ends of the rewound battery electrode sheets. During the subsequent unwinding process, when the unwinder rewinds these wrinkled battery electrode sheets, the wrinkles are likely to form stress concentration points, making it easier for the battery electrode sheets to deviate from the predetermined path during the unwinding process, resulting in unstable unwinding, which in turn affects the accuracy and efficiency of subsequent cutting, welding and other processes. Therefore, the present invention solves this problem by setting a certain structure. First, the first motor 12 drives the rotating shaft 13 to rotate, thereby driving the winding roller 17 to perform the winding and unwinding operations of the battery electrode sheet. A limit assembly is provided on the circumferential surface of the winding roller 17, which is composed of two limit rings 4. They can limit the movement of the battery electrode sheet during the winding and unwinding process, ensuring that the battery electrode sheet is neat and does not deviate. On both sides of the body 1, the positioning platform 110 on the positioning plate 19 carries a smoothing assembly, which is composed of two fixed half rings 122 that are slidably arranged toward each other. When the thickness of the battery electrode edge is uneven, the two fixed half rings 122 can fit the battery electrode tightly and smooth its edge by sliding, thereby improving the flatness of the battery electrode; In addition, the equipment is also provided with a cleaning component for cleaning the glue that may overflow after the battery pole piece is smoothed. The cleaning component consists of a connecting shaft 16 and a plurality of sponge cleaning plates fixed on its circumferential surface. As the battery pole piece moves, the sponge cleaning plates can wipe off the excess glue to ensure the cleanliness of the battery pole piece surface. Improved the accuracy and efficiency of battery electrode winding and unwinding, and further improved the quality of battery electrodes by setting up smoothing and cleaning components; The invention solves the problem of wrinkles at both ends of the battery roll caused by uneven edge thickness and failure to limit the battery pole pieces during the winding process of the existing battery pole pieces.

[0024] like Figure 4 and Figure 5 As shown, the limiting assembly of this embodiment also includes an annular groove 46 provided on the circumferential surface of the winding roller 17, and a rotating ring 42 is rotatably connected in the annular groove 46, and can rotate in the limiting ring 4. The rotating limiting ring 4 can limit the battery pole pieces being wound and unwound, so that the two ends of the battery pole pieces are aligned. A rotating handle 45 is fixed to one side of the limiting ring 4, and the rotating ring 42 can be manually adjusted by the rotating handle 45 so that the dressing spread by the smoothing assembly can be discharged from the space between the rotating ring 42 and the limiting ring 4.

[0025] Specifically, by adding an annular groove 46 and a rotatably connected rotating ring 42, the rotating ring 42 can rotate in the limit ring 4, and at the same time cooperate with the limit ring 4 to accurately position the wound and unwound battery pole pieces, ensuring that the two ends of the battery pole pieces are strictly aligned, and also allowing the excess dressing wiped out by the smoothing component to be smoothly discharged from the tiny space between the rotating ring 42 and the limit ring 4, avoiding the accumulation and waste of dressing, ensuring the neatness and uniformity of the battery pole piece surface, and improving the production quality and efficiency of the battery pole pieces.

[0026] like Figure 4 and Figure 5 As shown, in this embodiment, the circumferential surface of the rotating ring 42 is fixed with two rotating blocks 43, and one end of the two rotating blocks 43 is fixed with a sliding block 44. The inner wall of the limiting ring 4 is provided with a rotating groove 41, and the rotating ring 42 slides along the rotating groove 41 through the rotating block 43, thereby limiting and adjusting the battery pole piece.

[0027] Specifically, the two rotating blocks 43 fixed on the circumferential surface of the rotating ring 42 and the sliding block 44 at one end cooperate with the rotating groove 41 on the inner wall of the limiting ring 4 to achieve stable sliding of the rotating ring 42 in the limiting ring 4, thereby improving the accuracy of battery pole alignment and enhancing the operability of the equipment.

[0028] like Figure 4 and Figure 5 As shown, the cleaning assembly of this embodiment includes a transmission belt 14 that is connected to the circumferential surface of a rotating shaft 13. One end of the transmission belt 14 is connected to a rotating wheel 15. A connecting shaft 16 is fixedly connected to the middle of the rotating wheel 15. A plurality of sponge cleaning plates 33 are fixedly connected to the circumferential surface of the connecting shaft 16, which can clean the oil and dust on the surface of the wound battery electrode during the winding process.

[0029] Specifically, the cleaning component is connected to the rotating shaft 13 through a transmission belt 14, and the rotational power of the rotating shaft 13 is used to drive the transmission belt 14 and the rotating wheel 15 at the end to rotate. A number of sponge cleaning plates 33 are installed on the connecting shaft 16 fixed to the middle part of the rotating wheel 15. These cleaning plates 33 rotate with the rotation of the rotating wheel 15. During the winding process of the battery pole piece, they can closely contact and clean the oil and dust on the surface thereof, thereby improving the cleanliness of the battery pole piece and effectively avoiding the adverse effects of oil and dust on the battery performance. At the same time, the sponge cleaning plates 33 are soft and durable, ensuring that the cleaning process will not cause damage to the battery pole piece, thereby improving the production quality of the battery pole piece.

[0030] like Figure 4 and Figure 5As shown, the cleaning assembly of this embodiment also includes a storage box 3 fixed to the side of one of the side panels 18, and ethanol solution is stored in the storage box 3. A connecting pipe 32 is fixed to the lower surface of the storage box 3, and an auxiliary ring 31 is fixed to the bottom end of the connecting pipe 32. The auxiliary ring 31 is rotatably connected to the connecting shaft 16, and a plurality of spray holes 34 are opened on the circumferential surface of the connecting shaft 16.

[0031] Specifically, when the connecting shaft 16 rotates, the pressure pump in the storage box 3 is driven to pressurize and spray out the ethanol solution stored inside. The connecting shaft 16 is connected to the connecting pipe 32 of the storage box 3 through the auxiliary ring 31. The ethanol solution in the storage box 3 is passed into the connecting shaft 16 through the connecting pipe 32. The rotation of the auxiliary ring 31 and the connecting shaft 16 does not affect the rotation of the connecting shaft 16. The ethanol solution can also be passed into the connecting shaft 16 and sprayed from the spray hole 34 to dissolve and clean the glue on the surface of the battery electrode. An auxiliary roller 35 is rotatably provided below the connecting shaft 16. The circumferential surface of the auxiliary roller 35 is also made of sponge material, which can wipe and clean the surface of the battery electrode.

[0032] Example 2: Figures 1 to 5 As shown, in contrast to Example 1, another embodiment of the present invention is as follows: the smoothing assembly further includes a second motor 111 fixedly connected to the upper surface of the positioning platform 110, the output end of the second motor 111 is fixedly connected to the limiting shaft 5, the circumferential surface of the limiting shaft 5 is fixedly connected to a fixed wheel 112, the fixed wheel 112 is transmission-connected to a connecting belt 113, the second motor 111 is transmission-connected to another limiting shaft 5 through the fixed wheel 112, the two limiting shafts 5 are both reciprocating screws, and the circumferential surfaces of the two limiting shafts 5 are slidingly connected to the same top plate 11 5. A limiting groove 114 is provided at the position of the positioning plate 19 corresponding to the top plate 115, which is used to limit the upper and lower sliding of the top plate 115. Auxiliary plates 119 are fixedly connected on both sides of the top plate 115. A fixed guide rail 120 is provided on the lower surface of each auxiliary plate 119. A fixed hydraulic cylinder 121 is slidably connected in each fixed guide rail 120. A fixed half ring 122 is fixedly connected to the output end of each fixed hydraulic cylinder 121. The fixed half ring 122 is used to smooth the uneven thickness of the end of the battery electrode and wipe out the excess dressing.

[0033] Specifically, the limiting shaft 5 is driven to rotate by the second motor 111, and the fixed wheel 112 on the limiting shaft 5 is connected to the other limiting shaft 5 through the connecting belt 113, so that the two reciprocating screws can move synchronously, so that the top plate 115 can slide back and forth on the circumferential surfaces of the two limiting shafts 5. The limiting groove 114 on the positioning plate 19 can accurately limit the up and down sliding of the top plate 115, thereby ensuring the stability and accuracy of the leveling action. At the same time, a fixed hydraulic cylinder 121 is slidably connected to the fixed guide rails 120 provided on the lower surfaces of the auxiliary plates 119 fixed on both sides of the top plate 115. When uneven thickness is detected at the end of the battery electrode, the top plate 115 is moved downward to the bottom end, and then the fixed hydraulic cylinder 121 is activated to make the fixed half ring 122 abut against the battery electrode. The fixed hydraulic cylinder 121 is then driven to slide in the fixed guide rails 120. The battery electrode is smoothed by the sliding of the fixed half ring 122, which not only evenly wipes off excess dressing but also avoids accumulation and waste of dressing. In addition, the material and shape design of the fixing half ring 122 enable it to fit closely to the surface of the battery pole piece, ensuring that the battery pole piece will not be damaged during the smoothing process.

[0034] like Figure 3 As shown, the start of the two fixed guide rails 120 of this embodiment will drive the fixed hydraulic cylinder 121 that is slidably connected in the fixed guide rail 120. The two fixed guide rails 120 drive the two fixed hydraulic cylinders 121 to slide toward each other. Before the fixed guide rails 120 drive the fixed hydraulic cylinder 121 to slide, the fixed hydraulic cylinder 121 is started to make the fixed half ring 122 at its output end abut against the battery electrode on the circumferential surface of the winding roller 17. At this time, the two fixed guide rails 120 drive the two fixed hydraulic cylinders 121 to move toward each other, which can drive the two fixed half rings 122 to move toward each other, smooth the ends of the wound battery electrode, and smooth the battery electrode with uneven thickness at the ends.

[0035] like Figure 3 As shown, the smoothing assembly of this embodiment also includes a connecting rail 123 opened on one side of the auxiliary plate 119, and a connecting cutter 124 is slidably connected in the connecting rail 123. The connecting cutter 124 can cut off the battery electrode dressing smoothed out at both ends.

[0036] Specifically, the connecting guide rail 123 in the smoothing assembly and the slidingly connected connecting cutter 124 enable the connecting cutter 124 to accurately cut off the excess dressing after the battery pole is smoothed. This step follows the smoothing action, ensuring the timeliness and accuracy of the dressing removal and avoiding the impact of dressing residue on the quality of the battery pole. At the same time, the sliding design of the connecting cutter 124 enables it to be hidden and slide upward when not in use to prevent scratching the surface of the battery pole, thereby improving the versatility and flexibility of the equipment.

[0037] like Figure 3As shown, in this embodiment, a rolling roller 125 is rotatably connected between the two auxiliary plates 119, and the rolling roller 125 can limit the battery pole pieces. A fixed platform 116 is fixedly connected to one side of the top plate 115, and a first hydraulic cylinder 117 is fixedly connected to the upper surface of the fixed platform 116. A positioning cutter 118 is fixedly connected to the output end of the first hydraulic cylinder 117. The positioning cutter 118 is used to cut the battery pole pieces after winding and unwinding.

[0038] Specifically, the rolling roller 125 between the two auxiliary plates 119 applies a limit to the battery electrode by rotating to ensure its stable transmission. On the fixed platform 116 on one side of the top plate 115, the first hydraulic cylinder 117 drives the positioning cutter 118 to move up and down, accurately cutting the battery electrode after winding and unwinding, thereby improving the accuracy and stability of the battery electrode cutting, and effectively avoiding the dislocation of the battery electrode during the processing, thereby ensuring the processing quality and production efficiency of the battery electrode.

[0039] Working principle: first, the first motor 12 drives the rotating shaft 13 to rotate, and then drives the winding roller 17 to perform the winding and unwinding operations of the battery electrode. On the circumferential surface of the winding roller 17, a limit assembly is provided, which consists of two limit rings 4. The rotating ring 42 can rotate within the limit ring 4, and at the same time cooperate with the limit ring 4 to accurately position the wound and unwound battery electrode, ensuring that the two ends of the battery electrode are strictly aligned, and also allowing the excess dressing wiped out by the smoothing assembly to be smoothly discharged from the tiny space between the rotating ring 42 and the limit ring 4, avoiding the accumulation and waste of dressing, ensuring the neatness and uniformity of the battery electrode surface, and improving the production quality and efficiency of the battery electrode. They can limit the movement of the battery electrode during the winding and unwinding process, ensuring that the battery electrode is neat and not offset; On both sides of the machine body 1, the positioning platform 110 on the positioning plate 19 carries the smoothing assembly, and the limiting shaft 5 is driven to rotate by the second motor 111. The fixed wheel 112 on the limiting shaft 5 is connected to the other limiting shaft 5 through the connecting belt 113 to realize the synchronous movement of the two reciprocating screws, so that the top plate 115 slides back and forth on the circumferential surface of the two limiting shafts 5. The limiting groove 114 on the positioning plate 19 accurately limits the up and down sliding of the top plate 115, ensuring the stability and accuracy of the smoothing action; At the same time, a fixed hydraulic cylinder 121 is slidably connected to the fixed guide rails 120 provided on the lower surfaces of the auxiliary plates 119 fixed on both sides of the top plate 115. When the uneven thickness of the battery electrode is detected at the end, the top plate 115 is moved downward to the bottom end, and then the fixed hydraulic cylinder 121 is started to make the fixed half ring 122 abut against the battery electrode. The fixed hydraulic cylinder 121 is then driven to slide in the fixed guide rails 120. The battery electrode is smoothed by the sliding of the fixed half ring 122, which not only evenly wipes out excess dressing, but also avoids accumulation and waste of dressing. By sliding and smoothing the edges, the flatness of the battery electrode is improved. In addition, the connecting guide rail 123 in the smoothing assembly is connected to the connecting cutter 124 in a sliding manner, so that after the battery electrode is smoothed, the excess dressing can be accurately cut off by the connecting cutter 124. This step follows the smoothing action, ensuring the timeliness and accuracy of the dressing removal and avoiding the influence of the dressing residue on the quality of the battery electrode. At the same time, the sliding design of the connecting cutter 124 enables it to be hidden and slide upward when not in use to prevent scratching the surface of the battery electrode, thereby improving the versatility and flexibility of the equipment. In addition, the equipment is also provided with a cleaning component, which is connected to the rotating shaft 13 through a transmission belt 14, and the rotating power of the rotating shaft 13 is used to drive the transmission belt 14 and the rotating wheel 15 at the end to rotate. A plurality of sponge cleaning plates 33 are installed on the connecting shaft 16 fixed to the middle of the rotating wheel 15. These cleaning plates 33 rotate with the rotation of the rotating wheel 15, and can closely contact and clean the oil and dust on the surface of the battery pole piece during the winding process, thereby improving the cleanliness of the battery pole piece and effectively avoiding the adverse effects of oil and dust on the battery performance. At the same time, the sponge cleaning plate 33 is soft and durable, ensuring that the cleaning process will not cause damage to the battery pole piece, thereby improving the battery pole piece. The ethanol solution in the storage tank 3 is passed into the connecting shaft 16 through the connecting pipe 32, and the auxiliary ring 31 is connected to the rotation of the connecting shaft 16 without affecting the rotation of the connecting shaft 16. The ethanol solution can also be passed into the connecting shaft 16 and sprayed from the spray hole 34 to dissolve and clean the glue on the surface of the battery electrode. An auxiliary roller 35 is rotatably provided below the connecting shaft 16. The circumferential surface of the auxiliary roller 35 is also made of sponge material, which can wipe and clean the surface of the battery electrode to ensure the cleanliness of the surface of the battery electrode.

[0040] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic unwinding device for a coiled battery electrode sheet, comprising a body (1), a support plate (11) fixedly connected to one side of the body (1), a first motor (12) fixedly connected to the upper surface of the support plate (11), an output end of the first motor (12) fixedly connected to a rotating shaft (13), a winding roller (17) fixedly connected to the circumferential surface of the rotating shaft (13), and limiting rollers (2) provided on both sides of the body (1), characterized in that: A limiting assembly is provided on the circumferential surface of the winding roller (17), and the limiting assembly includes two limiting rings (4). The two limiting rings (4) are used to limit the position of the battery electrode during the winding and unwinding process, and can limit the movement of the battery electrode; Side plates (18) are fixedly connected to both sides of the body (1), and positioning plates (19) are fixedly connected to the surfaces of the two side plates (18). A positioning platform (110) is fixedly connected to the upper surface of one of the positioning plates (19). A smoothing assembly is provided on the positioning platform (110), and the smoothing assembly includes two fixed half rings (122) that are arranged to slide toward each other. The two fixed plate rings can smooth the battery pole pieces with uneven edge thickness. A cleaning assembly is also provided between the two side plates (18), and the cleaning assembly is used to clean the glue overflowing from the battery electrode after being smoothed. The cleaning assembly includes a connecting shaft (16) rotatably provided between the two side plates (18), and a plurality of sponge cleaning plates are fixedly connected to the circumferential surface of the connecting shaft (16).

2. The automatic unwinding device for coiled battery pole pieces according to claim 1, characterized in that: The limiting assembly further comprises an annular groove (46) provided on the circumferential surface of the winding roller (17), a rotating ring (42) being rotatably connected in the annular groove (46), the rotating ring being able to rotate in the limiting ring (4), the rotating limiting ring (4) being able to limit the battery pole piece being wound and unwound, so that the two ends of the battery pole piece are aligned, a rotating handle (45) being fixed to one side of the limiting ring (4), the rotating ring (42) being able to be manually adjusted by the rotating handle (45), so that the dressing spread out by the smoothing assembly can be discharged from the space between the rotating ring (42) and the limiting ring (4).

3. The automatic unwinding device for coiled battery pole pieces according to claim 2, characterized in that: Two rotating blocks (43) are fixedly connected to the circumferential surface of the rotating ring (42), and one end of each of the rotating blocks (43) is fixedly connected to a sliding block (44). A rotating groove (41) is provided on the inner wall of the limiting ring (4), and the rotating ring (42) slides along the rotating groove (41) through the rotating blocks (43), thereby adjusting the position of the battery pole piece.

4. The automatic unwinding device for coiled battery pole pieces according to claim 1, characterized in that: The cleaning assembly comprises a transmission belt (14) connected to the circumferential surface of a rotating shaft (13); one end of the transmission belt (14) is connected to a rotating wheel (15); a connecting shaft (16) is fixedly connected to the middle of the rotating wheel (15); and a plurality of sponge cleaning plates (33) are fixedly connected to the circumferential surface of the connecting shaft (16), which can clean oil and dust on the surface of the wound battery electrode during the winding process.

5. The automatic unwinding device for coiled battery pole pieces according to claim 4, characterized in that: The cleaning assembly further comprises a storage box (3) fixedly connected to the side of one of the side plates (18), wherein the storage box (3) stores an ethanol solution, a connecting pipe (32) fixedly connected to the lower surface of the storage box (3), an auxiliary ring (31) fixedly connected to the bottom end of the connecting pipe (32), the auxiliary ring (31) being rotatably connected to the connecting shaft (16), and a plurality of spray holes (34) being provided on the circumferential surface of the connecting shaft (16).

6. The automatic unwinding device for coiled battery pole pieces according to claim 5, characterized in that: When the connecting shaft (16) rotates, the pressure pump in the storage box (3) is driven to pressurize and spray out the ethanol solution stored inside. The connecting shaft (16) is connected to the connecting pipe (32) of the storage box (3) through the auxiliary ring (31). The ethanol solution in the storage box (3) is passed into the connecting shaft (16) through the connecting pipe (32). The rotational connection between the auxiliary ring (31) and the connecting shaft (16) does not affect the rotation of the connecting shaft (16). The ethanol solution can also be passed into the connecting shaft (16) and sprayed out from the spray hole (34) to dissolve and clean the glue on the surface of the battery pole piece. An auxiliary roller (35) is rotatably provided below the connecting shaft (16). The circumferential surface of the auxiliary roller (35) is also made of sponge material and can wipe and clean the surface of the battery pole piece.

7. The automatic unwinding device for coiled battery pole pieces according to claim 1, characterized in that: The smoothing assembly further comprises a second motor (111) fixedly connected to the upper surface of the positioning platform (110), the output end of the second motor (111) is fixedly connected to a limiting shaft (5), the circumferential surface of the limiting shaft (5) is fixedly connected to a fixed wheel (112), the fixed wheel (112) is transmission-connected to a connecting belt (113), the second motor (111) is transmission-connected to another limiting shaft (5) via the fixed wheel (112), both limiting shafts (5) are reciprocating screws, the circumferential surfaces of the two limiting shafts (5) are slidably connected to the same top plate (115), the positioning plate (19) A limiting groove (114) is provided at a position corresponding to the top plate (115) for limiting the upward and downward sliding of the top plate (115). Auxiliary plates (119) are fixedly connected to both sides of the top plate (115). A fixed guide rail (120) is provided on the lower surface of each auxiliary plate (119). A fixed hydraulic cylinder (121) is slidably connected in each fixed guide rail (120). A fixed half ring (122) is fixedly connected to the output end of each fixed hydraulic cylinder (121). The fixed half ring (122) is used to smooth the uneven thickness of the end of the battery electrode and wipe out excess dressing.

8. The automatic unwinding device for coiled battery pole pieces according to claim 7, characterized in that: The activation of the two fixed guide rails (120) drives the fixed hydraulic cylinders (121) that are slidably connected in the fixed guide rails (120). The two fixed guide rails (120) drive the two fixed hydraulic cylinders (121) to slide toward each other. Before the fixed guide rails (120) drive the fixed hydraulic cylinders (121) to slide, the fixed hydraulic cylinders (121) are activated to make the fixed half ring (122) at the output end contact the battery pole piece on the circumferential surface of the winding roller (17). At this time, the two fixed guide rails (120) drive the two fixed hydraulic cylinders (121) to move toward each other, which can drive the two fixed half rings (122) to move toward each other, smoothing the ends of the wound battery pole piece, and smoothing the battery pole piece with uneven thickness at the ends.

9. The automatic unwinding device for coiled battery pole pieces according to claim 7, characterized in that: The smoothing assembly further comprises a connecting guide rail (123) provided on one side of the auxiliary plate (119), wherein a connecting cutter (124) is slidably connected in the connecting guide rail (123), and the connecting cutter (124) is capable of cutting off the battery electrode dressing smoothed out at both ends.

10. The automatic unwinding device for coiled battery pole pieces according to claim 9, characterized in that: A rolling roller (125) is rotatably connected between the two auxiliary plates (119), and the rolling roller (125) can limit the battery electrode. A fixed platform (116) is fixed to one side of the top plate (115), and a first hydraulic cylinder (117) is fixed to the upper surface of the fixed platform (116). A positioning cutter (118) is fixed to the output end of the first hydraulic cylinder (117), and the positioning cutter (118) is used to cut the battery electrode after winding and unwinding.

Images