Pole piece unwinding deviation rectifying device

Abstract

The utility model discloses a pole piece unwinding deviation rectifying device which comprises an air swelling shaft mechanism, an edge deviation rectifying mechanism, a tension mechanism and a buffering mechanism. The air swelling shaft mechanism comprises an air swelling shaft assembly and an unwinding deviation rectifying assembly, and the air swelling shaft assembly is arranged on the unwinding deviation rectifying assembly. The edge deviation rectifying mechanism comprises an adjusting assembly and an optical fiber sensor assembly. Real-time rotating speed compensation and transverse deviation correction are achieved through the linkage design of the air swelling shaft mechanism and the unwinding deviation correction assembly, winding dislocation caused by the wavy edge of the pole piece can be counteracted in real time, the deviation correction amplitude is reduced, material waste is avoided, meanwhile, the tension of the pole piece is kept constant through the multi-shaft-roller layout of the tension mechanism, and the winding quality of the pole piece is improved. And the deviation rectifying precision and the unwinding stability are obviously improved. The speed difference between unwinding and subsequent procedures is automatically compensated by arranging the cache mechanism, so that the pole piece is prevented from being loosened or too tight; and the cylinder pressing design of the fourth angle block is matched, so that the conveying continuity of the pole piece is further ensured, and the belt breaking risk is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of battery production, specifically to an electrode unwinding and correction device. Background Technology

[0002] In lithium battery manufacturing, the electrode sheet is a crucial component, and its processing quality significantly impacts production efficiency and performance. As a thin, flexible material, the lithium battery electrode sheet is susceptible to tension fluctuations and mechanical vibrations during unwinding, leading to lateral shifts or wavy edges, directly affecting the alignment accuracy of subsequent coating and winding processes. Existing correction methods rely primarily on single sensors, which struggle to adapt to deviations caused by edge deformation or uneven material thickness. Furthermore, existing correction mechanisms, adjusting positions via fixed guide rails, cannot compensate for real-time tension fluctuations, making them prone to breakage due to sudden tension changes during correction. Additionally, the fixed positions of traditional correction sensors make it difficult to adapt to electrode widths of varying specifications, necessitating frequent fixture changes and impacting production efficiency. On the other hand, existing correction devices often employ multiple tension rollers to maintain electrode tension; however, these rollers are mostly fixed in position, unable to adapt to changes in electrode length caused by asynchronous unwinding and feeding, resulting in wrinkles or breakage, further reducing production efficiency. Utility Model Content

[0003] This utility model addresses the shortcomings of current technology by providing an electrode unwinding and correction device, aiming to solve the technical problems of poor electrode performance, poor stability, and low adaptability in existing electrode unwinding and correction devices.

[0004] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0005] An electrode unwinding and correction device is mounted on a fixed plate. The electrode unwinding and correction device includes an air shaft mechanism, an edge correction mechanism, a tension mechanism, and a buffer mechanism, all of which are mounted on the fixed plate. The edge correction mechanism is located below the air shaft mechanism, and the buffer mechanism is located beside the edge correction mechanism. The fixed plate also includes a controller. The air shaft mechanism includes an air shaft assembly and an unwinding and correction assembly, with the air shaft assembly mounted on the unwinding and correction assembly. The edge correction mechanism includes an adjustment assembly and an optical fiber sensor assembly.

[0006] As a further improvement, the fixing plate is provided with multiple through holes, and a mounting base is provided on the lower back of one of the through holes. The unwinding and correction assembly is mounted on the mounting base. The unwinding and correction assembly includes a drive source, a lead screw module, and a slide rail module. The mounting base is provided with two supports, and the lead screw module is disposed between the two supports and connected to the drive source. The slide rail module includes two guide rails with sliders, which are arranged in a mirror image on both sides of the lead screw module. The lead screw module is provided with a lead screw nut seat, and the lead screw nut seat is provided with a slide table. The slide table is fixedly connected to the slider, and the air shaft assembly is disposed on the slide table.

[0007] As a further improvement, the slide table is provided with a support, and the air shaft assembly includes a drive source and an air shaft. The drive source is disposed on the support and connected to the air shaft. The air shaft is disposed and inserted into the through hole.

[0008] The slide table is also provided with a bracket, and the bracket is provided with a first rolling pressure roller, which is disposed in another through hole.

[0009] As a further improvement, a first mounting base is provided above the first rolling pressure roller, and the adjustment assembly includes a second slide rail and a differential adjuster. The second slide rail is disposed on the first mounting base, and the second slide rail is provided with a second slider group. A second slide table is provided on the second slider group, and second supports are provided at both ends of the second slide table. The fiber optic sensor assembly is disposed between the two second supports.

[0010] As a further improvement, two guide rods are provided between the two second supports, and each of the two guide rods is provided with a sliding guide sleeve; the fiber optic sensor assembly includes a third slider and two fiber optic detection sensors, the third slider is disposed on the two sliding guide sleeves, the third slider is provided with a mounting plate, the mounting plate is provided with a slot, and the two fiber optic detection sensors are disposed in a mirror image next to the slot.

[0011] As a further improvement, the second support is also provided with an angle plate, which is disposed on the side of the second slide rail. The angle plate has a straight groove hole, and the third slider has a threaded hole. The threaded hole has a manual bolt, which is disposed in the straight groove hole. The differential adjuster is disposed on one of the second supports, and the second support has a second through hole. The differential adjuster has an adjusting rod, the end of which is connected to the third slider. The adjusting rod is used to control the third slider to move along the direction of the guide rod.

[0012] As a further improvement, the fixed plate is provided with a third support, and the buffer mechanism includes a linear module and a third drive source. The linear module is connected to the third drive source and is disposed on the third support. The linear module is provided with a third slider, and the third slider is provided with two third support blocks, and the two support blocks are provided with third rollers.

[0013] As a further improvement, a fourth corner block is provided on the side of the third support, a fourth shaft roller is provided below the fourth corner block, a cylinder is provided on the fourth corner block, and a pressure bar is provided on the cylinder; the fourth corner block is also provided with a controller and a slot; a sensor is provided above and below the slot.

[0014] As a further improvement, the fixing plate is also provided with a fourth support, the fourth support is provided with an adjustment module, the adjustment module is provided with a fourth slider, the fourth slider is provided with a fourth bracket, the fourth bracket is provided with a fourth cylinder, and the fourth cylinder is provided with a fourth pressure roller assembly; the adjustment module is provided with a manual adjustment screw, and the manual adjustment screw is threadedly connected to the fourth slider.

[0015] As a further improvement, the tension mechanism includes multiple tension rollers, which are arranged on the fixed plate. The tension rollers are respectively arranged between the first rolling pressure roller and the controller, between the controller and the fourth pressure roller assembly, between the fourth pressure roller assembly and the third support, and between the third support and the fourth roller. A fifth platform is provided between the controller and the fourth pressure roller assembly. Both the fifth platform and the fourth corner block are provided with a first slot, and two sensors are provided on the side of each first slot, which are mirror-oriented.

[0016] Compared with the prior art, the above-mentioned one or more technical solutions in the electrode unwinding and correction device provided in this embodiment of the utility model have at least one of the following technical effects:

[0017] 1. This utility model achieves real-time correction and adjustment by setting up a linkage design between the air expansion shaft mechanism and the unwinding correction component. The air expansion shaft component is driven by a servo motor to achieve speed compensation. Combined with the lead screw module driving the slide table for lateral correction, it can offset the winding misalignment caused by the wavy edge of the electrode in real time, reduce the correction amplitude, and avoid material waste. At the same time, the multi-axis roller layout of the tension mechanism maintains constant electrode tension, significantly improving the correction accuracy and unwinding stability.

[0018] 2. An edge correction mechanism is set up to detect and correct the edge of the electrode material. The position of the fiber optic sensor assembly can be manually fine-tuned by setting a differential adjuster. Combined with a precision guiding structure of guide rod and sliding guide sleeve, it can quickly adapt to the detection requirements of electrode materials of different widths. By setting fiber optic detection sensors symmetrically arranged on both sides of the slot, the edge detection sensitivity is enhanced, ensuring the real-time and accurate feedback of the correction signal.

[0019] 3. By setting up a buffer mechanism for automatic adjustment, and by setting up the linear module and the active drive of the third drive source, the position of the third roller is dynamically adjusted to compensate for the speed difference between unwinding and subsequent processes, and to avoid the electrode sheet being loose or too tight; in conjunction with the cylinder clamping design of the fourth corner block, the continuity of electrode sheet conveying is further ensured and the risk of tape breakage is reduced. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of the electrode unwinding and correction device in this embodiment;

[0022] Figure 2 This is a front view schematic diagram of the electrode unwinding and correction device in this embodiment;

[0023] Figure 3 This is a side view of the electrode unwinding and correction device in this embodiment;

[0024] Figure 4 This is a top view schematic diagram of the electrode unwinding and correction device in this embodiment;

[0025] Figure 5 This is a schematic diagram of the edge correction mechanism in this embodiment. Detailed Implementation

[0026] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0027] For examples, see the appendix. Figures 1-5An electrode unwinding and correction device 1 is mounted on a fixed plate 2. The electrode unwinding and correction device 1 includes an air shaft mechanism 3, an edge correction mechanism 4, a tension mechanism 5, and a buffer mechanism 6, all of which are mounted on the fixed plate 2. The edge correction mechanism 4 is located below the air shaft mechanism 3, and the buffer mechanism 6 is located beside the edge correction mechanism 4. The fixed plate 2 also includes a controller 7, which has multiple control buttons and multiple display tables. The air shaft mechanism 3 includes an air shaft assembly 30 and an unwinding and correction assembly 31, with the air shaft assembly 30 mounted on the unwinding and correction assembly 31. The edge correction mechanism 4 includes an adjustment assembly 40 and an optical fiber sensor assembly 41.

[0028] The fixing plate 2 has multiple through holes, and a mounting base is provided on the lower back of one of the through holes. The unwinding and correction assembly 31 is mounted on the mounting base. The unwinding and correction assembly 31 includes a drive source 310, a lead screw module 311, and a slide rail module 312. The mounting base has two supports, and the lead screw module 311 is disposed between the two supports and connected to the drive source 310. The slide rail module 312 includes two guide rails with sliders, which are arranged in a mirror image on both sides of the lead screw module 311. The lead screw module 311 has a lead screw nut seat, and the lead screw nut seat has a slide table 313. The slide table 313 is fixedly connected to the slider, and the air shaft assembly 30 is disposed on the slide table 313. The slide table 313 is provided with a support. The air shaft assembly 30 includes a drive source 300 and an air shaft 301. The drive source 300 is mounted on the support and connected to the air shaft 301. The air shaft 301 is positioned and inserted into the through hole. The slide table 313 is also provided with a bracket 314. The bracket 314 is provided with a first rolling pressure roller 315, which is positioned in another through hole. The drive source 310 and drive source 300 are preferably servo motors. The unwinding and correction assembly 31 is used to realize the unwinding and correction actions. The rotation speed of the drive source 300 compensates for tension fluctuations, avoiding the risk of electrode material breakage due to sudden tension changes during the correction process. The drive source 310 is used to drive the position of the air shaft 301 to compensate for deviations, thereby solving the problem of winding alignment caused by the wavy edge of the electrode material, reducing the correction amplitude, reducing material waste, and improving the pass rate of subsequent electrode material processing.

[0029] A first mounting base is provided above the first rolling pressure roller 315. The adjusting assembly 40 includes a second slide rail 400 and a differential adjuster 401. The second slide rail 400 is disposed on the first mounting base. The second slide rail 400 is provided with a second slider group 402. The second slider group 402 is provided with a second slide table 403. The two ends of the second slide table 403 are provided with second supports. The fiber optic sensor assembly 41 is disposed between the two second supports. Two guide rods are provided between the two second supports, and each of the two guide rods is provided with a sliding guide sleeve. The fiber optic sensor assembly 41 includes a third slider 410 and two fiber optic detection sensors 411. The third slider 410 is disposed on the two sliding guide sleeves. The third slider 410 is provided with a mounting plate 410a. The mounting plate 410a is provided with a slot. The two fiber optic detection sensors 411 are disposed in a mirror image next to the slot. The second support also includes an angle plate 404, which is located beside the second slide rail 400. The angle plate 404 has a straight slot hole. The third slider 410 has a threaded hole, and a manual bolt 410b is located in the threaded hole. The manual bolt 410b is located in the straight slot hole. The straight slot hole is used to adjust the position of the fiber optic sensor assembly 41, so that the fiber optic sensor assembly 41 can be used to detect electrode materials of different specifications and sizes, improving its applicability. The differential adjuster 401 is located on one of the second supports, and the second support has a second through hole. The device 401 is equipped with an adjusting rod, the end of which is connected to the third slider 410. The adjusting rod is used to control the third slider 410 to move along the guide rod. The fiber optic sensor assembly 41 is used to detect the edge of the passing electrode material, thereby cooperating with the buffer mechanism 6 and the air shaft mechanism 3 to perform automatic deviation correction, thereby ensuring the stability and quality of subsequent electrode material unwinding and feeding. The differential adjuster 401 is used for manual fine adjustment, thereby ensuring the position of the fiber optic detection sensor 411, ensuring the subsequent detection accuracy, and thus ensuring the accuracy of subsequent deviation correction actions.

[0030] The fixed plate 2 is provided with a third support. The buffer mechanism 6 includes a linear module 60 and a third drive source 61. The third drive source 61 prioritizes a servo motor. The linear module 60 is connected to the third drive source 61 and is mounted on the third support. The linear module 60 is provided with a third slider. The third slider is provided with two third support blocks. The two support blocks are provided with third rollers 62. A fourth corner block 8 is provided on the side of the third support. A fourth shaft roller 80 is provided below the fourth corner block 8. The fourth corner block 8 is provided with a cylinder 81. The cylinder 81 is provided with a pressure bar 82. The fourth corner block 8 is also provided with a controller and a slot. Sensors 83 are provided above and below the slot. The controller is provided with an emergency stop button. The buffer mechanism 6 is used to provide buffer compensation, thereby compensating for the length change of the electrode material caused by the asynchronous unwinding and feeding, ensuring that the electrode material is in a tight state when unwinding, and ensuring the stability of the unwinding action and the quality of the electrode material.

[0031] The fixed plate 2 is also provided with a fourth support, the fourth support is provided with an adjustment module 9, the adjustment module 9 is provided with a fourth slider, the fourth slider is provided with a fourth bracket 90, the fourth bracket 90 is provided with a fourth cylinder 91, and the fourth cylinder 91 is provided with a fourth pressure roller assembly 92; the adjustment module 9 is provided with a manual adjustment screw 93, the manual adjustment screw 93 is threadedly connected to the fourth slider, and the adjustment module 9 is used to adjust the position of the fourth pressure roller assembly 92. The fourth pressure roller assembly 92 includes a fourth mounting block and the fourth pressure roller. A fourth guide shaft roller is provided between the fourth pressure roller and the fifth platform. The surface of the fourth pressure roller assembly 92 is provided with a textured surface. During operation, the fourth pressure roller assembly 92 is driven by the fourth cylinder to fit against the fourth guide shaft roller, thereby performing surface treatment on the tab portion of the electrode material between the fourth pressure roller assembly 92 and the fourth guide shaft roller, so that the tab portion of the electrode material forms corresponding ribs, improving the efficiency of subsequent processing and improving the bending strength of the tab portion of the electrode material.

[0032] The tension mechanism 5 includes multiple tension rollers, which are mounted on the fixed plate 2. These tension rollers are respectively positioned between the first rolling pressure roller 315 and the controller 7, between the controller 7 and the fourth pressure roller assembly 92, between the fourth pressure roller assembly 92 and the third support, and between the third support and the fourth roller 80. A fifth platform is provided between the controller 7 and the fourth pressure roller assembly 92. Both the fifth platform and the fourth corner block 8 have a first slot. Two mirror-image sensors are provided on the sides of each first slot. These sensors are used to detect the position of the electrode material. The tension mechanism 5 ensures that the electrode is under tension during winding, preventing wrinkles in the electrode material and ensuring the flatness and quality of the winding.

[0033] This invention achieves real-time correction and adjustment by setting up a linkage design between an air shaft mechanism and an unwinding correction component. The air shaft component is driven by a servo motor to achieve speed compensation. Combined with the lead screw module driving the slide table for lateral correction, it can offset the winding misalignment caused by the wavy edge of the electrode in real time, reduce the correction amplitude, and avoid material waste. At the same time, the multi-axis roller layout of the tension mechanism maintains constant electrode tension, significantly improving correction accuracy and unwinding stability. An edge correction mechanism is used to detect and correct the edge of the electrode material. A differential adjuster allows for manual fine-tuning of the fiber optic sensor assembly's position. Combined with a precision guiding structure featuring guide rods and sliding guide sleeves, this allows for rapid adaptation to the detection needs of electrode materials of varying widths. Symmetrical arrangement of fiber optic sensors on both sides of the slot enhances edge detection sensitivity, ensuring real-time and accurate feedback of the correction signal. An automatic adjustment mechanism and active drive from a linear module and drive source three dynamically adjust the position of the third roller, compensating for speed differences between unwinding and subsequent processes, preventing the electrode from becoming too loose or too tight. The cylinder clamping design of the fourth corner block further ensures the continuity of electrode transport and reduces the risk of tape breakage.

[0034] This utility model is not limited to the above-described embodiments. Other electrode unwinding and correction devices obtained by using the same or similar structures or devices as the above-described embodiments of this utility model are all within the protection scope of this utility model.

Claims

1. An electrode plate unwinding and deviation rectifying device arranged on a fixed plate, characterized in that: The pole piece unwinding deviation correcting device comprises a gas swelling shaft mechanism, an edge deviation correcting mechanism, a tension mechanism and a buffer mechanism, the gas swelling shaft mechanism, the edge deviation correcting mechanism, the tension mechanism and the buffer mechanism are all arranged on the fixed plate; the edge deviation correcting mechanism is arranged below the gas swelling shaft mechanism, and the buffer mechanism is arranged beside the edge deviation correcting mechanism; the fixed plate is further provided with a controller; The gas swelling shaft mechanism comprises a gas swelling shaft assembly and an unwinding deviation correcting assembly, and the gas swelling shaft assembly is arranged on the unwinding deviation correcting assembly; The edge deviation correcting mechanism comprises an adjusting assembly and an optical fiber sensor assembly.

2. The pole piece unwinding deviation correcting device according to claim 1, characterized in that: The fixed plate is provided with a plurality of through holes, one of which is provided with a mounting seat below the back surface, and the unwinding deviation correcting assembly is arranged on the mounting seat; the unwinding deviation correcting assembly comprises a driving source, a lead screw module and a sliding rail module, the mounting seat is provided with two supports, the lead screw module is arranged between the two supports, and the lead screw module is connected with the driving source; the sliding rail module comprises two sliding block guide rails, which are arranged on both sides of the lead screw module in a mirror image manner, the lead screw module is provided with a lead screw nut seat, the lead screw nut seat is provided with a sliding table, the sliding table is fixedly connected with the sliding block, and the gas swelling shaft assembly is arranged on the sliding table.

3. The pole piece unwinding deviation correcting device according to claim 2, characterized in that: The sliding table is provided with a support one, the gas swelling shaft assembly comprises a driving source one and a gas swelling shaft, the driving source one is arranged on the support one, the driving source one is connected with the gas swelling shaft, and the gas swelling shaft is arranged and inserted into the through hole; The sliding table is further provided with a support, and the support is provided with a first rolling pressure roller, which is arranged in another through hole.

4. The pole piece unwinding deviation correcting device according to claim 3, characterized in that: The first rolling pressure roller is provided with a first mounting seat above, the adjusting assembly comprises a second sliding rail and a differential adjuster, the second sliding rail is arranged on the first mounting seat, the second sliding rail is provided with a second sliding block group, a second sliding table is arranged on the second sliding block group, and two second supports are arranged at both ends of the second sliding table; the optical fiber sensor assembly is arranged between the two second supports.

5. The pole piece unwinding deviation correcting device according to claim 4, characterized in that: Two guide rods are arranged between the two second supports, and each of the two guide rods is provided with a sliding guide sleeve; the optical fiber sensor assembly comprises a third sliding block and two optical fiber detection sensors, the third sliding block is arranged on the two sliding guide sleeves, the third sliding block is provided with a mounting plate, the mounting plate is provided with a slot, and the two optical fiber detection sensors are arranged beside the slot in a mirror image manner.

6. The pole piece unwinding deviation correcting device according to claim 5, characterized in that: The second support is further provided with an angle plate, the angle plate is arranged beside the second sliding rail, the angle plate is provided with a straight slot hole, the third sliding block is provided with a threaded hole, the threaded hole is provided with a hand bolt, and the hand bolt is arranged in the straight slot hole; the differential adjuster is arranged on one of the second supports, and the second support is provided with a second through hole, the differential adjuster is provided with an adjusting rod, the end of the adjusting rod is connected with the third sliding block, and the adjusting rod is used for controlling the third sliding block to move along the direction of the guide rod.

7. The pole piece unwinding deviation correcting device according to claim 6, characterized in that: The fixed plate is provided with a third support, the buffering mechanism comprises a linear module and a driving source three, the linear module is connected with the driving source three and arranged on the third support; the linear module is provided with a sliding block three, the sliding block three is provided with two third supporting blocks, and the two supporting blocks are provided with third rollers.

8. The pole piece unwinding deviation correcting device according to claim 7, characterized in that: The side of the third support is provided with a fourth corner block, the lower portion of the fourth corner block is provided with a fourth shaft roller, the fourth corner block is provided with an air cylinder, and the air cylinder is provided with a pressing strip; the fourth corner block is also provided with a controller one and a notch four; the upper and lower portions of the notch four are both provided with a sensor four.

9. The pole piece unwinding deviation correcting device according to claim 8, characterized in that: The fixed plate is also provided with a fourth support, the fourth support is provided with an adjusting module, the adjusting module is provided with a fourth sliding block, the fourth sliding block is provided with a fourth support frame, the fourth support frame is provided with a fourth air cylinder, and the fourth air cylinder is provided with a fourth pressing roller assembly; the adjusting module is provided with a manual adjusting screw rod, and the manual adjusting screw rod is in threaded connection with the fourth sliding block.

10. The pole piece unwinding deviation correcting device according to claim 9, characterized in that: The tension mechanism comprises a plurality of tension shaft rollers, the plurality of tension shaft rollers are arranged on the fixed plate, and the tension shaft rollers are respectively arranged between the first rolling pressing roller and the controller, between the controller and the fourth pressing roller assembly, between the fourth pressing roller assembly and the third support, and between the third support and the fourth shaft roller; a fifth platform is arranged between the controller and the fourth pressing roller assembly, the fifth platform and the fourth corner block are both provided with a first notch, and the side of the first notch is provided with two mirror image sensors.

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