Automatic roll changing module for pole piece

Abstract

The invention relates to the technical field of battery winding, in particular to an automatic pole piece reel changing module which comprises a handover module and unwinding assemblies arranged on the two sides of the handover module respectively, and the handover module comprises a first frame, a second frame and handover assemblies arranged on the first frame and the second frame. A feeding channel capable of allowing a pole piece material belt to pass through is formed between the first frame and the second frame, the first frame and the second frame are movably and oppositely arranged through a guide rail structure, key steps such as cutting, adsorption, positioning and adhesive tape pasting of the pole piece material belt can be automatically completed through the handover module, and in addition, the handover efficiency of the pole piece material belt is improved. The first frame and the second frame are arranged through the guide rail structure, so that the width of the feeding channel is adjusted to adapt to pole piece material belts with different widths, the universality and the flexibility of the module are improved, and the operation risk of workers is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery winding, in particular to an automatic electrode piece roll changing module. BACKGROUND

[0002] With the development and maturity of new energy technology, the application of lithium batteries is also becoming more and more widespread. In the current lithium battery equipment, the battery composed of the electrode core formed by winding is called a winding battery, and the winding battery is also called an electrode core. The existing lithium battery winding machine or sheet machine needs to change the electrode piece tape roll during the working process to ensure the continuous production of lithium batteries. The traditional method is to stop the whole machine, cut the old electrode piece tape near the unwinding device, then replace the new electrode piece tape roll on the unwinding device, and manually connect the head of the new electrode piece tape with the tail of the old electrode piece tape to complete the roll changing. The roll changing efficiency is low, which reduces the production of the electrode core and affects the benefits of the enterprise.

[0003] In order to solve the above technical problems, the applicant previously applied for a kind of electrode piece automatic roll changing mechanism with a patent number of 201910945051.4. The first and second electrode piece tapes are cut off at the same time by the cutter, the first electrode piece tape AB end and the second electrode piece tape CD end after cutting are positioned and sucked by the first, second, third and fourth suction heads respectively, the positioning of the first electrode piece tape A end and the second electrode piece tape D end is ensured to be accurate, and the first electrode piece tape A end and the second electrode piece tape D end are adhered by the first and second adhesive tapes, thereby realizing the automatic handover and roll changing of the first and second electrode piece tapes and improving the production efficiency of lithium batteries.

[0004] In actual application, the inventor found that although the above structure can realize automatic handover and roll changing, manual material supplementing is still needed before the electrode piece tape handover, and the electrode piece tape needs to be manually pulled through the feeding channel to complete the basic arrangement of the electrode piece tape roll changing. This process not only easily affects the first electrode piece tape running at high speed, but also may cause harm to the operator. In order to solve the above problems, the present application provides a new type of electrode piece automatic roll changing module, which aims to realize the full automatic roll changing process of the electrode piece tape, reduce manual intervention, and improve the production efficiency and safety. SUMMARY

[0005] The present application provides an electrode piece automatic roll changing module to solve the problems mentioned in the background.

[0006] The purpose of the present application is achieved by the following means:

[0007] An automatic pole piece roll changing module, comprising a transfer module and a roll-off assembly arranged on both sides of the transfer module respectively, the transfer module comprising a first frame, a second frame and a transfer assembly arranged between the first frame and the second frame, a feeding channel through which a pole piece material belt passes being formed between the first frame and the second frame, the first frame and the second frame being movably arranged relative to each other through a guide rail structure to adjust the width of the feeding channel, and a roll changing module being arranged on one side of the transfer module.

[0008] Further, the roll changing module comprises a traction assembly, the traction assembly comprising a material clamp jaw and a three-axis linear driver, the three-axis linear driver being used to drive the material clamp jaw to move along three axes X, Y and Z, and the material clamp jaw being used to pull the pole piece material belt of the roll-off assembly to pass through the feeding channel.

[0009] Further, the roll-off assembly comprises a roll-off shaft on which at least two pole piece material rolls can be placed, a third driver used to drive the roll-off shaft to linearly move along its axial direction, and a third motor used to drive the roll-off shaft to rotate.

[0010] Further, the roll-off shaft is provided with an expansion and contraction structure, and a plurality of positioning grooves for fixing and embedding the pole piece material belt rolls are sequentially and spacedly arranged along the axial direction of the roll-off shaft, so that two adjacent pole piece material belt rolls can be arranged at intervals.

[0011] Further, the roll changing module further comprises a material loading rack on which at least one pole piece material roll can be placed, and a conveying assembly used to transfer the pole piece material roll on the material loading rack to the roll-off assembly.

[0012] Further, the conveying assembly comprises a moving platform, a first driver, a second driver mounted on the first driver perpendicularly, and a rotating expansion and contraction shaft mounted on the second driver, and the three-axis linear driver and the first driver are both mounted on the moving platform.

[0013] Further, the rotating expansion and contraction shaft comprises a main shaft, a second motor used to drive the main shaft to rotate, and a plurality of support frames arranged around the outside of the main shaft, the main shaft driving a plurality of the support frames to expand outwardly or contract inwardly through a linkage structure, and adjacent two of the support frames are arranged at intervals.

[0014] Further, the material loading rack is provided with a material shaft on which a pole piece material roll is placed, a universal wheel is mounted at the lower end of the material loading rack, and a groove through which the support frame passes is arranged around the material shaft.

[0015] Further, the pole piece material belt roll adopts a sealing tape, the sealing tape is provided with an identification code, the rotating expansion shaft is provided with a second cutter for cutting the sealing tape, one side of the second cutter is provided with a code scanner for scanning the identification code.

[0016] Further, the material clamping jaw is composed of a second clamping cylinder and two clamping plates, the two clamping plates are installed on the output shaft of the second clamping cylinder, and the second clamping cylinder drives the two clamping plates to reciprocate relative to each other.

[0017] The handover module of the present application can automatically complete key steps such as cutting, adsorbing, positioning and adhesive tape pasting of the pole piece material belt, and the first frame and the second frame adjust the width of the feeding channel through the arrangement of the guide rail structure to adapt to pole piece material belts of different widths, thereby improving the versatility and flexibility of the module. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of the handover module in example one;

[0019] Figure 2 It is a structure schematic view of the first and second pressing seats in example one;

[0020] Figure 3 It is a front view of the handover module in example one;

[0021] Figure 4 It is a first working schematic view of the handover module in example one;

[0022] Figure 5 It is a second working schematic view of the handover module in example one;

[0023] Figure 6 It is a third working schematic view of the handover module in example one;

[0024] Figure 7 It is a fourth working schematic view of the handover module in example one;

[0025] Figure 8 It is a fifth working schematic view of the handover module in example one;

[0026] Figure 9 It is a sixth working schematic view of the handover module in example one;

[0027] Figure 10 It is a seventh working schematic view of the handover module in example one;

[0028] Figure 11 It is an eighth working schematic view of the handover module in example one;

[0029] Figure 12Structure diagram of the automatic changing module of the pole piece in embodiment one;

[0030] Figure 13 Structure diagram of the changing module in embodiment one;

[0031] Figure 14 Front view of the changing module in embodiment one;

[0032] Figure 15 Enlarged diagram of E in embodiment one; Figure 14

[0033] Figure 16 Top view of the traction assembly in embodiment one;

[0034] Figure 17 Structure diagram of the changing module in embodiment two;

[0035] Figure 18 Structure diagram of the unwinding shaft in embodiment two;

[0036] Figure 19 First working diagram of the changing module in embodiment two;

[0037] Figure 20 Second working diagram of the changing module in embodiment two;

[0038] In the drawings, the reference numerals are respectively: 1 - the changing module, 10 - the adhesive paper, 11 - the first frame, 12 - the second frame, 13 - the first unwinding assembly, 14 - the second unwinding assembly, 15 - the first pole piece material belt, 16 - the second pole piece material belt, 17 - the first support, 18 - the second support, 19 - the rotating shaft, 100 - the feeding channel, 101 - the first pressing seat, 102 - the second pressing seat, 103 - the guide rail structure, 104 - the driving cylinder, 105 - the limiting roller, 106 - the buffer cylinder, 107 - the first adhesive head, 108 - the second adhesive head, 109 - the knife groove, 110 - the first cutter, 111 - the first suction unit, 112 - the second suction unit, 113 - the third suction unit, 114 - the fourth suction unit, 115 - the first clamping roller, 116 - the second clamping roller, 117 - the first motor, 118 - the third pole piece material belt roll, 121 - the first cylinder, 122 - the second cylinder, 123 - the third cylinder, 124 - the fourth cylinder;

[0039] ​2-Change module, 20-Loading rack, 21-Universal wheel, 22-Positioning hole, 23-Groove, 24-Rotary expansion shaft, 240-Main shaft, 241-Second motor, 242-Support frame, 25-Moving platform, 26-Second cutter, 27-Code scanner, 28-Material clamping jaw, 280-Second clamping cylinder, 281-Long clamping plate, 282-Short clamping plate, 29-Three-axis linear driver, 200-Material shaft, 201-First driver, 202-Second driver, 203-Third driver, 204-Fourth driver, 205-Unwinding shaft, 206-Expansion structure, 207-Positioning groove, 211-First pole piece material tape roll, 212-Second pole piece material tape roll, 213-Third pole piece material tape roll, 214-Fourth pole piece material tape roll. DETAILED DESCRIPTION

[0040] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0041] Example one:

[0042] This embodiment, refer to Figure 1 - Figure 3 A pole piece automatic change module, comprising an interface module 1 and a winding assembly arranged on both sides of the interface module 1, the interface module 1 comprises a first frame 11, a second frame 12 and an interface assembly arranged between the first frame 11 and the second frame 12, the first frame 11 and the second frame 12 form a feeding channel 100 through which the pole piece material tape passes, the first frame 11 and the second frame 12 are movably arranged relative to each other through a guide rail structure 103, the guide rail structure 103 is provided with a driving cylinder 104 for driving the first frame 11 and the second frame 12 to move, thereby adjusting the width of the feeding channel 100.

[0043] A plurality of limiting rollers 105 are arranged at the upper and lower ends of the feeding channel 100, wherein four limiting rollers 105 are symmetrically arranged on one side adjacent to the first frame 11 and the second frame 12, the limiting rollers 105 are used for guiding and limiting the pole piece material tape, ensuring stable transmission of the pole piece material tape in the feeding channel 100. In addition, an appropriate amount of limiting rollers 105 are arranged at other parts of the feeding channel 100 according to actual needs, to prevent the pole piece material tape from shifting or wrinkling during transmission. In actual application, after the interface module 1 completes the interface of the new and old material tapes, the driving cylinder 104 drives the first frame 11 and the second frame 12 to move outward, so as to expand the width of the feeding channel 100, thereby avoiding affecting the subsequent change process and improving the safety of equipment operation.

[0044] Further, the joint assembly comprises a first pressing seat 101 and a second pressing seat 102 arranged on both sides of the feeding channel 100, the first pressing seat 101 is installed on the first frame 11 through a buffer air cylinder 106, the first pressing seat 101 and the second pressing seat 102 are respectively provided with a first cutter 110 and a cutter groove 109, the first cutter 110 is fixedly installed on the buffer air cylinder 106, and the first cutter 110 is located in the first pressing seat 101. In actual application, under the driving of the first air cylinder 121 and the second air cylinder 122, the first cutter 110 cooperates with the cutter groove 109 to complete the cutting of the pole piece tape.

[0045] The first pressing seat 101 is separated by the first cutter 110, and a first adsorption unit 111 and a second adsorption unit 112 are formed on both sides of the first cutter 110, the second pressing seat 102 is separated by the cutter groove 109, and a third adsorption unit 113 and a fourth adsorption unit 114 are formed on both sides of the cutter groove 109, and in the butt joint process, the first adsorption unit 111, the second adsorption unit 112, the third adsorption unit 113 and the fourth adsorption unit 114 are used to adsorb and fix the first end and the second end of the pole piece tape, so that the pole piece tapes can be stably butt jointed together after cutting. Each adsorption unit is provided with a vacuum adsorption device, which can firmly adsorb the pole piece tape by generating negative pressure, so as to prevent the pole piece tape from sliding or misplacing during butt joint.

[0046] The side of the adjacent adsorption unit of the first pressing seat 101 and the second pressing seat 102 is respectively provided with a first adhesive head 107 and a second adhesive head 108 provided with adhesive tape, and the first adhesive head 107 and the second adhesive head 108 are respectively provided with an adsorption unit for adsorbing the adhesive tape.

[0047] In the embodiment, the unwinding assembly is composed of a first unwinding assembly 13 for conveying the first pole piece tape 15 and a second unwinding assembly 14 for placing the second pole piece tape 16 to be jointed.

[0048] The first pole piece material belt 15 and the second pole piece material belt 16 pass through the transfer module 1 along the feeding channel 100, the first pressing seat 101 and the second pressing seat 102 move oppositely and cut the first pole piece material belt 15 and the second pole piece material belt 16 of the feeding channel 100 simultaneously by the first cutter 110, and the first adsorption unit 111 adsorbs the A end of the first pole piece material belt 15, and the fourth adsorption unit 114 adsorbs the D end of the second pole piece material belt 16, wherein the B end of the first pole piece material belt 15 and the C end of the second pole piece material belt 16 are driven by the first unwinding assembly 13 and the second clamping roller 116 respectively and are separated from the range of the feeding channel 100; the A end of the first pole piece material belt 15 is pasted with adhesive tape by the second adhesive head 108 cooperating with the first pressing seat 101 and is adsorbed on the second adhesive head 108, the D end of the second pole piece material belt 16 is pasted with adhesive tape by the first adhesive head 107 cooperating with the second pressing seat 102 and is adsorbed on the first adhesive head 107, and the first adhesive head 107 and the second adhesive head 108 cooperate with each other to glue and fix the A end of the first pole piece material belt 15 pasted with adhesive tape and the D end of the second pole piece material belt 16 to complete the transfer of the first pole piece material belt 15 and the second pole piece material belt 16.

[0049] Further, the first frame 11 and the second frame 12 are respectively provided with a first air cylinder 121 and a second air cylinder 122, the first pressing seat 101 is rotatably installed on the first air cylinder 121 through a first support 17, the second pressing seat 102 is rotatably installed on the second air cylinder 122 through a second support 18, the first pressing seat 101 and the second pressing seat 102 are rotatably installed on the first support 17 and the second support 18 through corresponding rotating shafts 19 respectively, and the first air cylinder 121 and the second air cylinder 122 drive the first frame 11 and the second frame 12 to move oppositely to realize the cutting action of the first cutter 110 and the adhesive action of the adhesive head.

[0050] The first adhesive head 107 is arranged adjacent to the first pressing seat 101, the second adhesive head 108 is arranged adjacent to the second pressing seat 102, and a 90-degree included angle is formed between the two. A third air cylinder 123 for driving the first pressing seat 101 to rotate is installed on the first support 17, a fourth air cylinder 124 for driving the second pressing seat 102 to rotate is installed on the second support 18, and the third air cylinder 123 and the fourth air cylinder 124 are connected with the corresponding rotating shafts 19 through corresponding swing arms respectively. When the first pressing seat 101 and the second pressing seat 102 complete the cutting action on the pole piece material belt, the third air cylinder 123 and the fourth air cylinder 124 are driven to realize the overturning of the pressing seat, so that the first adhesive head 107 can be arranged oppositely to the second adhesive head 108.

[0051] Further, the upper part of the first frame 11 and the second frame 12 is respectively provided with a first clamping material roller 115 and a second clamping material roller 116, the first clamping material roller 115 and the second clamping material roller 116 are provided with a clamping groove through which the pole piece material belt passes, the first clamping material roller 115 and the second clamping material roller 116 are connected with a first motor 117, the first clamping material roller 115 and the second clamping material roller 116 are composed of a first clamping air cylinder and two clamping plates, the two clamping plates are installed on the output shaft of the first clamping air cylinder, the first clamping air cylinder drives the two clamping plates to reciprocate relative to each other, and the clamping groove is formed between the two clamping plates.

[0052] As shown in the figure, the working process of the handover module 1 in the embodiment is as follows: Figures 4-11

[0053] When the first pole piece material belt 15 of the first unwinding assembly 13 is consumed, the first frame 11 and the second frame 12 are moved inwardly driven by the driving air cylinder 104, so that the first pole piece material belt 15 can be attached to the second pole piece material belt 16, and then the first pressing seat 101 and the second pressing seat 102 press the first pole piece material belt 15 and the second pole piece material belt 16 in the middle under the driving of the first air cylinder 121 and the second air cylinder 122, and the first pole piece material belt 15 and the second pole piece material belt 16 are cut off at the same time through the matching of the first cutter 110 and the cutter groove 109;

[0054] At this time, the first adsorption unit 111 adsorbs the A end of the first pole piece material belt 15, and the fourth adsorption unit 114 adsorbs the D end of the second pole piece material belt 16, wherein the B end of the first pole piece material belt 15 and the C end of the second pole piece material belt 16 are driven by the first unwinding assembly 13 and the second clamping material roller 116 respectively, and are out of the range of the feeding channel 100;

[0055] The A end of the first pole piece material belt 15 is attached to the first pressing seat 101 through the second adhesive head 108 and is adsorbed on the second adhesive head 108, the D end of the second pole piece material belt 16 is attached to the second pressing seat 102 through the first adhesive head 107 and is adsorbed on the first adhesive head 107, the first adhesive head 107 and the second adhesive head 108 cooperate with each other to glue and fix the A end of the first pole piece material belt 15 and the D end of the second pole piece material belt 16 which are attached with adhesive tape, thereby completing the handover of the first pole piece material belt 15 and the second pole piece material belt 16.

[0056] As shown in the figure, the working process of the handover module 1 in the embodiment is as follows: Figures 12-16 The embodiment also includes a roll changing module 2 arranged on one side of the handover module 1, the roll changing module 2 is used to realize automatic roll changing of the pole piece material belt roll, and a traction assembly is used to complete the traction work of the pole piece material belt, so as to realize the full automatic process of roll changing.

[0057] ​The roll changing module 2 includes a traction component, a carrier rack 20 for holding at least one electrode strip roll, and a conveying component for transferring the electrode strip roll on the carrier rack 20 to the unwinding component.

[0058] The traction assembly includes a material gripper 28 and a three-axis linear actuator 29. The three-axis linear actuator 29 is used to drive the material gripper 28 to move along the X, Y, and Z axes. The material gripper 28 is used to pull the electrode strip of the unwinding assembly through the feeding channel 100.

[0059] Furthermore, the material gripper 28 consists of a second clamping cylinder 280 and two clamping plates. The two clamping plates are mounted on the output shaft of the second clamping cylinder 280. The second clamping cylinder 280 drives the two clamping plates to reciprocate relative to each other, thereby completing the fixed clamping of the electrode strip through the two clamping plates. Figure 15 As shown, the electrode strip roll sealed with the cut adhesive tape 10 will typically sag naturally due to gravity. At this point, the two clamping plates will clamp and fix the electrode strip to complete the subsequent traction operation. However, in practical applications, each electrode strip roll is affected by the previous winding tension or other factors, causing varying degrees of deformation at the sag end of each roll. Therefore, in order to ensure that the two clamping plates can accurately and smoothly clamp the electrode strip, the two clamping plates in this embodiment are composed of a long clamping plate 281 and a short clamping plate 282 arranged opposite to each other. In actual use, the material gripper 28 first moves along a direction parallel to the electrode strip roll and close to the electrode strip roll. Thus, the long clamping plate 281 contacts and guides the deformed electrode strip to move to the predetermined clamping position. Then, the material gripper 28 moves along a direction perpendicular to the electrode strip roll and close to the electrode strip roll, so that the electrode strip can be placed between the long clamping plate 281 and the short clamping plate 282, thereby achieving positioning and clamping. Through the clamping structure of one long and one short, the material gripper 28 accurately clamps the electrode strip, improving the efficiency and stability of automated roll changing. The relative arrangement of the long clamping plate 281 and the short clamping plate 282 not only adapts to possible deformation of the electrode strip, but also effectively avoids clamping failure or damage caused by deformation of the electrode strip through step-by-step clamping.

[0060] Furthermore, the conveying assembly includes a moving platform 25, a first driver 201 that moves in a direction close to the roll changing module 2, a second driver 202 that is perpendicular to the first driver 201, and a rotating expansion shaft 24 that is mounted on the second driver 202. The first driver 201 and the second driver 202 respectively drive the rotating expansion shaft 24 to move along the X-axis and Z-axis directions.

[0061] The three-axis linear driver 29 and the first driver 201 are both mounted on the moving platform 25, the lower end of the moving platform 25 is provided with a driving module driven along the X-axis direction, the moving platform 25 is used to drive the three-axis linear driver 29 and the rotating expansion and contraction shaft 24 to move along the X-axis, so that the rotating expansion and contraction shaft 24 can realize the connection of the material rack 20 and the unwinding assembly.

[0062] Further, the rotating expansion and contraction shaft 24 comprises a main shaft 240, a second motor 241 for driving the main shaft 240 to rotate, and a plurality of support frames 242 arranged around the outside of the main shaft 240, the main shaft 240 drives a plurality of support frames 242 to expand outwardly or contract inwardly through a connecting rod structure, thereby realizing the expansion and contraction effect, two adjacent support frames 242 are arranged at intervals, and a cylinder for pushing the connecting rod structure is arranged on the main shaft 240.

[0063] Further, the material rack 20 is provided with a material shaft 200 for placing the pole piece material belt roll, and the lower end of the material rack 20 is provided with a universal wheel 21, so that the material rack 20 can be flexibly moved to the required position. The material shaft 200 is provided with a locking device for stably mounting the pole piece material belt roll on the material shaft 200, preventing it from falling off or loosening during transportation or roll changing. The universal wheel 21 has a wheel brake structure to ensure that the material rack 20 can be kept stable in the stationary state, preventing the pole piece material belt roll from being damaged or affecting the accuracy of the roll changing operation due to the movement or shaking of the material rack 20. In addition, the locking device is composed of a locking handle and a locking buckle, the locking handle is connected to the material shaft 200 by threads, and the locking buckle is fixed to one end of the material shaft 200. After the pole piece material belt roll is sleeved on the material shaft 200, the locking handle is rotated to push the locking buckle to move towards the center of the material shaft 200, thereby clamping the pole piece material belt roll and ensuring its stability during work.

[0064] In addition, the material rack 20 is also provided with a plurality of positioning holes 22 and positioning pins, the positioning holes 22 and the positioning pins cooperate to stably fix the material rack 20 in the preset position for the replacement of the pole piece material belt roll. The positioning holes 22 are uniformly distributed along the circumference of the material rack 20 to adapt to different working environments and needs. In actual application, the operator can select appropriate positioning holes 22 according to the actual situation, insert the positioning pins into the corresponding positioning holes 22, and the material rack 20 can be quickly fixed. This design not only improves the efficiency of roll changing operation, but also ensures the stability and safety during roll changing.

[0065] The unwinding assembly is composed of an unwinding shaft 205 and a third motor for driving the unwinding shaft 205 to rotate, and the unwinding shaft 205 and the material shaft 200 are both circumferentially provided with a groove 23 through which the support frame 242 passes. In actual application, a plurality of support frames 242 of the rotating expansion shaft 24 need to be inserted into the groove 23 of the unwinding shaft 205 or the material shaft 200, so as to realize the function of taking or placing the pole piece material belt roll.

[0066] The pole piece material belt roll is composed of a material belt wound after coating and slitting process. In the embodiment, the pole piece material belt after winding is sealed by adhesive paper 10, thereby forming the pole piece material belt roll, and the adhesive paper 10 is further provided with an identification code. The identification code usually records the model, production batch and production data of the previous process of the pole piece material belt, and the identification code is usually a bar code or a two-dimensional code. In actual production, when a new pole piece material belt roll needs to be opened, the pole piece material belt roll can be recorded into the system through the cooperation of the code scanner 27 on one side of the second cutter 26 and the identification code, thereby realizing the traceability and management of the pole piece material belt roll. The connection of the code scanner 27 and the system enables the relevant information to be automatically recorded and updated every time the pole piece material belt roll is replaced, thereby improving the efficiency and accuracy of production management. Further, in order to ensure that the code scanner 27 can accurately and quickly identify the identification code, the code scanner 27 in the embodiment adopts a high-resolution CCD camera and cooperates with a specific image processing algorithm, which can complete the capture and decoding of the identification code in a very short time. In addition, in order to further improve the degree of automation of roll replacement, when the code scanner 27 successfully identifies the identification code, the rotating expansion shaft 24 stops rotating and moves downward synchronously through the second driver 202, so that the pole piece material belt roll falls to the upper end of the second cutter 26, thereby performing the cutting action, thereby realizing one-stop automation operation from scanning to cutting, and greatly improving the production efficiency.

[0067] The working process of the roll replacement module 2 in the embodiment is as follows:

[0068] When the transfer module 1 completes the butt joint process of the first pole piece material belt 15 and the second pole piece material belt 16, the second unwinding assembly 14 originally placed for transferring the second pole piece material belt 16 is changed to a conveying state, and the first unwinding assembly 13 originally conveying the first pole piece material belt 15 is changed to a state of waiting for replacement of the pole piece material belt roll; at this time, the first unwinding assembly 13 is replaced by the roll replacement module 2.

[0069] First, driven by the mobile platform 25, the first driver 201 and the second driver 202, the rotating expansion shaft 24 can be connected with the unwinding shaft 205 of the first unwinding assembly 13, so that the remaining first electrode strip can be transferred to the scrap area by rotating the expansion shaft 24. At the same time, driven by the three-axis linear driver 29, the material gripper 28 transfers the waste electrode strip in the clamping groove of the second clamping roller 116 to the scrap area.

[0070] The third electrode strip roll 118 is taken out from the material shaft 200 by rotating the expansion and contraction shaft 24, and the third electrode strip roll 118 is driven to rotate slowly, so that the barcode scanner 27 on one side of the second cutter 26 can scan and identify the identification code of the third electrode strip roll 118. After the barcode scanner 27 successfully identifies the identification code, the expansion and contraction shaft 24 immediately stops rotating and is driven to move downward by the second driver 202, so that the third electrode strip roll 118 falls to the upper end of the second cutter 26, and drives the third electrode strip roll 118 to rotate again, so that the adhesive tape 10 of the third electrode strip roll 118 is cut off by the second cutter 26, thereby forming a hanging electrode strip that can move naturally. Then, the third electrode strip roll 118 is transferred to the unwinding shaft 205 of the first unwinding assembly 13 by rotating the expansion and contraction shaft 24.

[0071] Driven by the triaxial linear actuator 29, the electrode strip is clamped and pulled by the material gripper 28, and is arranged in sequence through multiple limiting rollers 105. Finally, it is pulled to the clamping groove of the first clamping roller 115 for fixation, thus completing the fully automated process of changing the roll.

[0072] The reel-changing module of this invention can automatically complete key steps such as cutting, adsorption, positioning, and tape application of electrode strips, eliminating the need for manual replacement of electrode strip reels or manual pulling of the electrode strips. During the electrode strip handover process, the first frame 11 and the second frame 12 can move relative to each other to adjust the width of the feeding channel 100 to accommodate electrode strips of different widths, thus improving the versatility and flexibility of the module.

[0073] Example 2:

[0074] like Figures 17-18 As shown, the difference between this embodiment and Embodiment 1 lies in the roll changing module 2. Compared with Embodiment 1, the roll changing module 2 in this embodiment has a simpler and more compact structure and requires less space.

[0075] In this embodiment, the unwinding assembly includes an unwinding shaft 205 capable of holding at least two electrode material rolls, a third driver 203 for driving the unwinding shaft 205 to move linearly along its axial direction, and a third motor for driving the unwinding shaft 205 to rotate.

[0076] The roll changing module 2 of the embodiment comprises the traction assembly and the second cutter 26 and the code scanner 27 arranged below the unwinding shaft 205, and the second cutter 26 is installed below the unwinding shaft 205 in a liftable manner by the fourth driver 204.

[0077] The traction assembly comprises a material clamp jaw 28 and a three-axis linear driver 29 for driving the material clamp jaw 28 to move along the X, Y and Z three axes; and the material clamp jaw 28 is used to pull the pole piece material belt of the unwinding assembly to pass through the feeding channel 100.

[0078] The unwinding shaft 205 in the embodiment is provided with an expansion structure 206, which not only ensures that the pole piece material belt roll on the unwinding shaft 205 does not deviate during rotation, but also improves the efficiency of replacing and supplementing the pole piece material belt roll. In addition, the unwinding shaft 205 is sequentially and spacedly provided with a plurality of positioning grooves 207 for fixing the embedded pole piece material belt roll along the axial direction thereof, so that the adjacent two pole piece material belt rolls can be arranged in a spaced manner to avoid interference between the adjacent two pole piece material belt rolls during operation.

[0079] As shown in Figures 19-20 , the working process of the roll changing module 2 in the embodiment is as follows:

[0080] Specifically, the unwinding assembly is composed of a first unwinding assembly 13 and a second unwinding assembly 14, and the first unwinding assembly 13 is spacedly provided with a first pole piece material belt roll 211 and a third pole piece material belt roll 213, and the second unwinding assembly 14 is spacedly provided with a second pole piece material belt roll 212 and a fourth pole piece material belt roll 214; wherein the first pole piece material belt roll 211 on the first unwinding assembly 13 is in a conveying state, and the second pole piece material belt roll 212 on the second unwinding assembly 14 is in a waiting handover state;

[0081] When the first pole piece material belt roll 211 completes the conveying, the first pole piece material belt 15 and the second pole piece material belt 16 are connected by the handover module 1, and then the second pole piece material belt 16 in the waiting handover state changes to the conveying state, and the first pole piece material belt 15 in the conveying state changes to the waiting handover state;

[0082] The first unwinding assembly 13 is driven by the third driver 203 to move outward, the third pole piece material belt roll 213 replaces the position of the first pole piece material belt roll 211, the third pole piece material belt roll 213 changes to the waiting handover state, and the third motor synchronously drives the third pole piece material belt roll 213 to rotate slowly, so that the code scanner 27 on one side of the second cutter 26 can scan and identify the identification code of the third pole piece material belt roll 213;

[0083] After the code scanner 27 successfully identifies the identification code, the third motor immediately stops rotating, and the second cutter 26 is moved upward to contact the third pole piece tape roll 213 by the driving of the fourth driver 204, and the third pole piece tape roll 213 is driven to rotate again by the third motor, so that the adhesive tape 10 of the pole piece tape roll is cut off by the second cutter 26, thereby forming a pole piece tape roll which can naturally move downward;

[0084] Under the driving of the three-axis linear driver 29, the pole piece tape is clamped and pulled by the material clamping jaw 28, sequentially passes through a plurality of limiting rollers 105, is finally pulled to the upper side of the transfer module 1, and is temporarily stopped there until the transfer module 1 starts the butt joint process of the second pole piece tape 16 and the third pole piece tape 118. After the first cutter 110 and the cutter groove 109 cooperate to complete the cutting process of the second pole piece tape 16 and the third pole piece tape 118, the C end of the third pole piece tape 118 is taken away from the range of the feeding channel 100 by the material clamping jaw 28 and is simultaneously transferred to the waste area, and then the above operation is repeated for the fourth pole piece tape roll 214, thereby completing the non-stop roll changing and transfer operation of the pole piece tape.

[0085] In the embodiment, the roll changing module 2 integrates the material carrier 20 to the unwinding assembly, greatly saves the equipment space, and after the material clamping jaw 28 completes the pulling action, replaces the original clamping roller arrangement, so that not only the number of parts is reduced, but also the working efficiency of the transfer module 1 is improved.

[0086] In the application, the first driver 201, the second driver 202 and the third driver 203 are linear driving modules, preferably screw linear driving modules, and the fourth driver 204 is a pneumatic cylinder.

[0087] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application is disclosed as above, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiment within the scope of the technical solution of the present application are all within the scope of the present application.

Claims

1. An automatic electrode rewinding module, comprising a transfer module (1) and unwinding assemblies respectively disposed on both sides of the transfer module (1), characterized in that, The handover module (1) includes a first frame (11), a second frame (12), and a handover component disposed on the first frame (11) and the second frame (12). A feeding channel (100) through which the electrode strip can pass is formed between the first frame (11) and the second frame (12). The first frame (11) and the second frame (12) are movably disposed opposite to each other through a guide rail structure (103) to adjust the width of the feeding channel (100). A roll-changing module (2) is provided on one side of the handover module (1).

2. The automatic electrode rewinding module according to claim 1, characterized in that: The roll changing module (2) includes a traction component, which includes a material gripper (28) and a three-axis linear actuator (29). The three-axis linear actuator (29) is used to drive the material gripper (28) to move along the X, Y, and Z axes. The material gripper (28) is used to pull the electrode strip of the unwinding component through the feeding channel (100).

3. The automatic electrode rewinding module according to claim 2, characterized in that: The unwinding assembly includes: An unwinding shaft (205) capable of holding at least two electrode material rolls; A third drive (203) for linearly moving the unwinding shaft (205) along its axial direction; and A third motor for driving the unwinding shaft (205) to rotate.

4. The automatic electrode rewinding module according to claim 3, characterized in that: The unwinding shaft (205) is provided with an expansion and contraction structure (206). The unwinding shaft (205) is provided with a plurality of positioning grooves (207) for fixing the interlocking electrode strip rolls in sequence along its axial direction, so that two adjacent electrode strip rolls can be arranged at intervals.

5. The automatic electrode rewinding module according to claim 2, characterized in that, The roll changing module (2) also includes: A carrier rack (20) capable of holding at least one electrode strip roll; and A conveying assembly for transferring the electrode strip roll on the carrier (20) to the unwinding assembly.

6. The automatic electrode rewinding module according to claim 5, characterized in that: The transmission assembly includes a mobile platform (25), a first driver (201), a second driver (202) mounted perpendicular to the first driver (201), and a rotary expansion shaft (24) mounted on the second driver (202). The triaxial linear driver (29) and the first driver (201) are both mounted on the mobile platform (25).

7. The automatic electrode rewinding module according to claim 6, characterized in that: The rotary expansion shaft (24) includes a main shaft (240), a second motor (241) for driving the main shaft (240) to rotate, and a plurality of support frames (242) arranged around the outside of the main shaft (240). The main shaft (240) drives the plurality of support frames (242) to expand outward or contract inward through a linkage structure, and adjacent support frames (242) are spaced apart from each other.

8. The automatic electrode rewinding module according to claim 7, characterized in that: The material carrier (20) is provided with a material shaft (200) for placing electrode strip rolls. The lower end of the material carrier (20) is equipped with casters (21). The material shaft (200) is surrounded by a groove (23) through which the support frame (242) can pass.

9. An automatic electrode rewinding module according to any one of claims 6-8, characterized in that: The electrode strip roll is sealed with adhesive tape (10), and an identification code is provided on the adhesive tape (10). The rotating expansion shaft (24) is provided with a second cutter (26) for cutting the adhesive tape (10), and a barcode scanner (27) for scanning the identification code is provided on one side of the second cutter (26).

10. An automatic electrode rewinding module according to any one of claims 6-8, characterized in that: The material gripper (28) consists of a second gripping cylinder (280) and two gripping plates. The two gripping plates are mounted on the output shaft of the second gripping cylinder (280), and the second gripping cylinder (280) drives the two gripping plates to reciprocate relative to each other.

Images