Lithium battery diaphragm winding device

Abstract

The utility model relates to a lithium battery diaphragm winding device which comprises a machine frame, two winding shafts distributed up and down are rotatably arranged on the machine frame, two sets of deviation rectifying mechanisms located on the rear sides of the two winding shafts respectively are arranged on the machine frame, and each deviation rectifying mechanism comprises a plurality of deviation rectifying assemblies distributed at intervals. The deviation rectifying assembly comprises a deviation rectifying roller, a swing frame and a supporting plate, the supporting plate is fixedly arranged on the rack, the swing frame is arranged on the supporting plate in a vertically swinging mode and is in transmission connection with a driving source arranged on the supporting plate, and the deviation rectifying roller is rotationally arranged at the end of the swing frame. According to the winding device for the lithium battery diaphragm, the deviation of the winding of the slit single lithium battery diaphragm can be corrected under the action of a plurality of deviation correcting assemblies, and the flatness of each material roll formed by winding is ensured.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a lithium battery separator winding device. Background Technology

[0002] The separator is a key component inside a lithium-ion battery, and its performance directly affects the overall performance of the battery. After production, the lithium-ion battery separator is in the form of a thin film and needs to be slit and then wound into separator rolls of the required width. In the existing technology, the winding of the slit lithium-ion battery separator is completed by a winding device, the main structure of which is two winding shafts distributed vertically. Several paper tubes are set at intervals on the two winding shafts, and the slit lithium-ion battery separator is wound onto the paper tubes by rotating the winding shafts. This type of winding device cannot correct the deviation of individual lithium-ion battery separators after slitting, which will affect the flatness of the rolled material.

[0003] To address the aforementioned problems, this utility model provides improvements. Utility Model Content

[0004] This invention proposes a lithium battery separator winding device, which solves the above-mentioned problems existing in the use of the prior art.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A lithium battery separator winding device includes a frame with two vertically distributed winding shafts rotatably mounted on the frame. Two sets of correction mechanisms are respectively located behind the two winding shafts on the frame. Each correction mechanism includes several spaced-apart correction components, each including a correction roller, a swing frame, and a support plate. The support plate is fixedly mounted on the frame. The swing frame is vertically swingable and connected to a drive source mounted on the support plate. The correction roller is rotatably mounted at the end of the swing frame.

[0007] Preferably, a rotating shaft is fixedly connected to the swing frame, the rotating shaft is rotatably mounted on the support plate, and a transmission swing arm is fixedly connected to the end of the rotating shaft that passes through the support plate. The driving source is a correction electric cylinder, the correction electric cylinder is rotatably mounted on the support plate, and the output shaft of the correction electric cylinder is hinged to the transmission swing arm.

[0008] Preferably, the swing frame is fixedly connected to two stabilizing rods symmetrically distributed along the rotation axis, and the support plate is provided with two arc grooves along the moving path of the stabilizing rods, with the two stabilizing rods respectively passing into the two arc grooves.

[0009] Preferably, a rotating sleeve matching the arc groove is rotatably fitted on the stabilizer bar, and the rotating sleeve is located inside the arc groove and in contact with the side wall of the arc groove.

[0010] Preferably, a brake spring is sleeved on the stabilizer bar between the swing frame and the support plate, with both ends of the brake spring abutting against the swing frame and the support plate, respectively.

[0011] Preferably, the correction mechanism further includes a mounting plate fixedly mounted on the frame, the mounting plate having a mounting groove parallel to the axial direction of the take-up shaft, and the support plate having at least two sets of bolts passing through the mounting groove.

[0012] Preferably, a bearing is provided at each end of the correction roller, and two first half-hoops matching the bearings are fixedly connected to the end of the swing frame. A second half-hoop is hinged on the first half-hoop, and the free ends of the first half-hoop and the second half-hoop are fastened together with bolts to hold the bearings together.

[0013] In summary, the beneficial effects of this utility model are as follows: each set of correction components individually corrects the winding of each lithium battery separator after slitting, thereby ensuring the flatness of each roll of material wound on the winding shaft and improving the correction effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the correction component in this utility model;

[0017] Figure 3 This is an exploded view of the correction component in this utility model.

[0018] In the diagram: 1. Frame; 2. Take-up shaft; 3. Correction assembly; 31. Correction roller; 311. Bearing; 32. Swing frame; 321. Rotating shaft; 322. Stabilizer bar; 323. Rotating sleeve; 324. First half hoop; 325. Second half hoop; 33. Support plate; 331. Arc groove; 34. Transmission swing arm; 35. Correction electric cylinder; 351. Mounting bracket; 36. Brake spring; 4. Mounting plate; 41. Mounting slot. Detailed Implementation

[0019] The following will refer to the appendix in the embodiments of this utility model. Figure 1-3The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] As shown in the figure, a lithium battery separator winding device includes a frame 1. Two winding shafts 2 are rotatably mounted on the frame 1 and distributed vertically. Two sets of correction mechanisms are respectively located behind the two winding shafts 2 on the frame 1. Each correction mechanism includes several correction components 3 distributed at intervals. Each correction component 3 includes a correction roller 31, a swing frame 32, and a support plate 33. The support plate 33 is fixedly mounted on the frame 1. The swing frame 32 is vertically swingable and is connected to a drive source mounted on the support plate 33. The correction roller 31 is rotatably mounted at the end of the swing frame 32.

[0021] Specifically, the swing frame 32 is oscillatingly mounted on the support plate 33 and connected to the drive source in a structure as follows: a rotating shaft 321 is fixedly connected to the swing frame 32, the rotating shaft 321 is rotatably mounted on the support plate 33, and a transmission swing arm 34 is fixedly connected to the end of the rotating shaft 321 that passes through the support plate 33. The drive source is a correction cylinder 35, which is rotatably mounted on the support plate 33 and its output shaft is hinged to the transmission swing arm 34. The rotation of the correction cylinder 35 on the support plate 33 is achieved through a mounting frame 351, which is rotatably connected to the support plate 33, and the correction cylinder 35 is fixedly mounted on the mounting frame 351.

[0022] In the above structure, the rotation setting of the take-up shaft 2 on the frame 1 and the corresponding drive structure are existing technologies and will not be described in detail here. The two sets of correction mechanisms distributed vertically are located on the rear side of the two take-up shafts 2 and correspond to the two take-up shafts 2 respectively. The correction components 3 on the two sets of correction mechanisms are staggered to match the vertical direction of the lithium battery after cutting. The cut lithium battery separators are connected to the take-up rollers after passing over the correction rollers 31 of the correction components 3, so that each cut lithium battery separator is tensioned on each correction roller 31. When the take-up shaft 2 rotates and pulls the lithium battery separator for winding, the correction cylinder 35 drives the rotating shaft 321 to rotate through the transmission swing arm 34. The rotating shaft 321 drives the swing frame 3 2. The swinging frame 32 drives the correction roller 31 to swing on the vertical plane. The swinging of the correction roller 31 causes the lithium battery separator tensioned on the correction roller 31 to achieve a small displacement in its width direction, thereby achieving the correction effect. Since each lithium battery separator after slitting can achieve the correction effect independently through the action of each correction roller 31, the flatness of each roll of material formed on the winding shaft 2 is guaranteed, thus achieving a better correction effect. The process of the correction electric cylinder 35 driving the swinging frame 32 to swing is combined with the infrared monitoring structure used to monitor whether the lithium battery separator after slitting has shifted. The infrared monitoring structure is a common existing technology and will not be described in detail here.

[0023] Based on the above structure, two stabilizing rods 322 are fixedly connected to the swing frame 32, symmetrically distributed along the rotation axis 321. The support plate 33 has two arc grooves 331 along the moving path of the stabilizing rods 322. The two stabilizing rods 322 are respectively inserted into the two arc grooves 331. When the correction cylinder 35 drives the swing frame 32 to drive the correction roller 31 to swing on the support plate 33 to correct the lithium battery separator, the stabilizing rods 322 move with the swing frame 32 and slide within the arc grooves 331. The cooperation between the stabilizing rods 322 and the arc grooves 331 guides the swing of the swing frame 32 and the correction roller 31, ensuring the stability and accuracy of the correction roller 31 during swing, thereby ensuring the correction effect.

[0024] Based on the above structure, a rotating sleeve 323 matching the arc groove 331 is rotatably sleeved on the stabilizer bar 322. The rotating sleeve 323 is located inside the arc groove 331 and contacts the side wall of the arc groove 331. When the rotating sleeve 323 moves with the stabilizer bar 322, it rolls inside the arc groove 331, changing the sliding friction between the stabilizer bar 322 and the arc groove 331 into rolling friction, reducing wear caused by friction, and ensuring the accuracy of the stabilizer bar 322 and the arc groove 331 when they cooperate to improve the guiding effect of the correction roller 31.

[0025] Based on the above structure, a brake spring 36 is sleeved on the stabilizer 322 between the swing frame 32 and the support plate 33. The two ends of the brake spring 36 abut against the swing frame 32 and the support plate 33 respectively. When the swing frame 32 swings, the brake spring 36 moves between the swing frame 32 and the support plate 33 along with the stabilizer 322. The friction generated by the brake spring 36 against the support plate 33 provides a braking effect on the swing of the swing frame 32 relative to the support plate 33, preventing the swing frame 32 from swinging excessively, thereby ensuring the accuracy of the correction roller 31 in correcting the alignment of the slit lithium battery separator.

[0026] Based on the above structure, the correction mechanism also includes a mounting plate 4 fixedly mounted on the frame 1. The mounting plate 4 has a mounting groove 41 parallel to the axial direction of the winding shaft 2. The support plate 33 has at least two bolts passing through the mounting groove 41. The support plate 33 is fixedly connected to the mounting plate 4 by the bolts, thereby fixing the correction component 3 on the frame 1. This makes disassembly and assembly convenient and facilitates maintenance of the correction component 3 during use. Furthermore, by loosening the bolts and allowing the support plate 33 to slide along the mounting groove 41 on the mounting plate 4, the distance between two adjacent correction components 3 can be adjusted, so that the distance between two adjacent correction components 3 is adapted to the width of the slit lithium battery separator, thereby making the winding device more adaptable.

[0027] Based on the above structure, a bearing 311 is provided at each end of the correction roller 31. Two first half-hoops 324 matching the bearings 311 are fixedly connected to the end of the swing frame 32. A second half-hoop 325 is hinged on the first half-hoop 324. The free ends of the first half-hoops 324 and the second half-hoops 325 are fastened with bolts to hold the bearings 311 together, so as to realize the rotation setting of the correction roller 31 on the swing frame 32. The fastening of the first half-hoops 324 and the second half-hoops 325 by bolts facilitates the disassembly and assembly of the correction roller 31, and makes it easy to disassemble and assemble the correction roller 31 for cleaning and maintenance during use to ensure the correction effect.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery separator winding device, comprising a frame (1), wherein two winding shafts (2) are rotatably mounted on the frame (1) and distributed vertically, characterized in that: The frame (1) is provided with two sets of correction mechanisms located behind the two take-up shafts (2). The correction mechanism includes several correction components (3) distributed at intervals. The correction component (3) includes a correction roller (31), a swing frame (32) and a support plate (33). The support plate (33) is fixedly installed on the frame (1). The swing frame (32) is vertically swingable and is connected to the drive source installed on the support plate (33). The correction roller (31) is rotatably installed at the end of the swing frame (32).

2. The lithium battery separator winding device according to claim 1, characterized in that: A rotating shaft (321) is fixedly connected to the swing frame (32). The rotating shaft (321) is rotatably mounted on the support plate (33). A transmission swing arm (34) is fixedly connected to the end of the rotating shaft (321) that passes through the support plate (33). The driving source is a correction electric cylinder (35). The correction electric cylinder (35) is rotatably mounted on the support plate (33), and the output shaft of the correction electric cylinder (35) is hinged to the transmission swing arm (34).

3. The lithium battery separator winding device according to claim 2, characterized in that: Two stabilizing rods (322) are fixedly connected to the swing frame (32) and are symmetrically distributed along the rotation axis (321). Two arc grooves (331) are provided on the support plate (33) along the moving path of the stabilizing rods (322). The two stabilizing rods (322) are respectively inserted into the two arc grooves (331).

4. The lithium battery separator winding device according to claim 3, characterized in that: The stabilizer bar (322) is rotatably fitted with a rotating sleeve (323) that matches the arc groove (331). The rotating sleeve (323) is located inside the arc groove (331) and contacts the side wall of the arc groove (331).

5. The lithium battery separator winding device according to claim 4, characterized in that: A brake spring (36) is fitted on the stabilizer bar (322) between the swing frame (32) and the support plate (33), and the two ends of the brake spring (36) abut against the swing frame (32) and the support plate (33) respectively.

6. The lithium battery separator winding device according to claim 5, characterized in that: The correction mechanism also includes a mounting plate (4) fixedly mounted on the frame (1). The mounting plate (4) has a mounting groove (41) parallel to the axial direction of the take-up shaft (2). The support plate (33) has at least two sets of bolts passing through the mounting groove (41).

7. The lithium battery separator winding device according to claim 6, characterized in that: The correction roller (31) is provided with a bearing (311) at each end. The swing frame (32) is fixedly connected to two first half hoops (324) that match the bearings (311). A second half hoop (325) is hinged on the first half hoop (324). The free ends of the first half hoop (324) and the second half hoop (325) are fastened with bolts to hold the bearing (311) together.

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