Rolling type tab welding machine

Abstract

The utility model discloses a rolling type tab welding machine which comprises a machine table, a conveying rack used for conveying a current collector and a mounting table, and a current collector feeding system, a current collector guiding and conveying system and a current collector rolling system are sequentially arranged on the conveying rack. Wherein a tab welding system, a pole piece production system, a pole roll feeding system and a driving system are arranged on the mounting table, the driving system is respectively connected with the pole roll feeding system and the current collector winding system, and a current collector sequentially passes through the current collector feeding system, the current collector guiding and conveying system and the tab welding system and then is wound by the current collector winding system. The resource utilization rate can be effectively improved, waste in the production process is reduced, and the production cost can also be reduced.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery welding technology, specifically a retractable electrode welding machine. Background Technology

[0002] The winding process after current collector welding is a crucial step in lithium-ion battery manufacturing, directly impacting the battery's electrical performance and safety. In this process, copper or aluminum foil, serving as the positive and negative current collectors, is connected to conductive leads via welding technology. Following a series of processing steps, it is ultimately formed into a rolled structure for subsequent battery assembly. With technological advancements, more and more new technologies are being applied to lithium-ion battery production lines to improve production efficiency and product quality. For example, using more automated tab welding equipment to replace manual labor in repetitive tasks can not only reduce error rates but also significantly shorten production cycles.

[0003] In contrast, traditional electrode welding machines require manual welding or welding of pre-cut electrode sheets. This process necessitates separately cutting the electrode rolls to the appropriate size before welding, which reduces work efficiency, lacks functionality, and does not have the function of recycling edge materials after cutting the electrode rolls, resulting in low resource utilization. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a rewinding electrode welding machine, which can effectively solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A rewinding electrode tab welding machine includes a machine base, a conveyor frame for conveying current collectors, and an mounting platform. The conveyor frame is sequentially provided with a current collector feeding system, a current collector guiding system, and a current collector rewinding system. The mounting platform is provided with an electrode tab welding system, an electrode sheet making system, an electrode roll feeding system, and a drive system. The drive system is connected to the electrode roll feeding system and the current collector rewinding system respectively.

[0007] The mounting platform is equipped with a welding workbench for installing the electrode welding system. The electrode welding system includes an electrode welding seat, which is connected to the welding workbench. A shock-absorbing structure is provided at the connection between the electrode welding seat and the welding workbench. The shock-absorbing structure includes a set of shock-absorbing arms, a shock-absorbing shaft, and a cylinder. The shock-absorbing arms are V-shaped and located on one side of the welding workbench. The shock-absorbing arms are connected to the cylinder through the shock-absorbing shaft. The cylinder is fixed to the side wall of the mounting platform.

[0008] The electrode sheet manufacturing system includes an electrode roll conveying chamber and an electrode roll cutting chamber. The bottom of the electrode roll cutting chamber is equipped with an electrode sheet handling robotic arm. The electrode roll conveying chamber is connected to the electrode roll feeding system. The electrode roll feeding system includes an electrode roll feeding rack and an electrode roll recycling rack. The electrode roll conveying chamber is equipped with an input port and an output port for conveying electrode tab rolls.

[0009] As a further description of the above technical solution, the current collector feeding system includes a conveying roller group, the current collector guiding system includes a guiding roller group and a flattening assembly, and the current collector winding system includes a current collector winding frame. The conveying roller group, the guiding roller group and the flattening roller group are arranged one by one on the conveyor frame. The current collector winding frame is connected to the mounting platform, and the mounting platform is also provided with an adjustable mounting groove.

[0010] As a further description of the above technical solution, the electrode welding system also includes a laser welding head, a guide seat, and a lifting structure. The laser welding head is connected to the guide seat through the lifting structure. The guide seat is provided with a mounting guide post, which fits into the mounting groove. The lifting structure includes a lifting cylinder and a connecting arm connected to the lifting cylinder. The connecting arm is connected to the laser welding head, and the laser welding head reciprocates along the direction of the electrode welding seat through the connecting arm.

[0011] As a further description of the above technical solution, the bottom of the electrode roll cutting chamber is provided with an electrode material trough, the electrode material handling robot arm is located below the electrode material trough, the electrode roll cutting chamber is also provided with a control module connected to the electrode material handling robot arm, and the electrode material handling robot arm is provided with a suction cup.

[0012] As a further description of the above technical solution, the electrode roll feeding rack and the electrode tab recycling rack are symmetrically arranged on the electrode roll conveying chamber. The electrode roll conveying chamber is equipped with an electrode tab conveyor. The electrode roll conveying chamber is connected to the electrode roll cutting chamber. The electrode roll cutting chamber is equipped with a cutting machine unit for cutting the electrode roll. The cutting machine unit includes a longitudinal cutter and a transverse cutter. The electrode roll cutting chamber is also equipped with an electrode tab scrap conveyor.

[0013] As a further description of the above technical solution, the electrode scrap conveying component consists of multiple electrode conveying rollers, which are connected to a stepper motor.

[0014] As a further description of the above technical solution, the drive system includes a first winding drive motor and a second winding drive motor. The first winding drive motor is connected to the current collector winding frame, and the second winding drive motor is connected to the tab take-up frame.

[0015] As a further description of the above technical solution, the flattening assembly includes a flattening roller, a flattening cylinder, and a push rod. The flattening roller is connected to the push rod, and the push rod moves along the length of the conveyor frame via the flattening cylinder.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The present invention relates to a retractable electrode welding machine, which has at least one of the following beneficial effects during use:

[0018] The electrode rolls are placed in the electrode roll feeding system, which includes an electrode roll feeding rack and an electrode roll recycling rack. After the coils are fed into the electrode roll conveying chamber, they are cut into electrode sheets of a specified size by the electrode roll cutting chamber. The cut electrode sheets fall into the electrode sheet trough, where they are placed on the current collector welding section by an electrode sheet handling robot arm. Automatic welding is performed using sensors to ensure the continuity and stability of the welding process. When the current collector is fed from one end of the conveyor frame, it passes through the conveyor roller group, guide roller group, and flattening assembly in sequence. The flattening assembly ensures that the composite current collector is evenly wound on the take-up drum, reducing wrinkles caused by uneven tension. When the current collector is conveyed to the welding worktable, the electrode tab is placed on the welding section of the current collector by the electrode sheet handling robot arm, and the tab is welded by laser welding. The welded current collector is then wound back onto the current collector take-up rack by the conveyor rollers. This structure effectively improves resource utilization, reduces waste in the production process, and lowers production costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a retractable electrode welding machine according to the present invention;

[0020] Figure 2 This is a schematic diagram of the front and side structure of a retractable electrode welding machine according to the present invention;

[0021] Figure 3 This is a schematic diagram of the right side structure of a retractable electrode welding machine according to the present invention;

[0022] Figure 4 This is a top view schematic diagram of a retractable electrode welding machine according to the present invention;

[0023] Figure 5 This is a schematic diagram of the rear side structure of a winding-type electrode welding machine according to the present invention.

[0024] Numbering on the map:

[0025] 1. Machine base; 101. Conveyor frame; 102. Mounting platform; 103. Mounting slot; 104. Control panel; 2. Current collector feeding system; 201. Conveyor roller assembly; 3. Current collector guiding system; 301. Guide roller assembly; 302. Flattening roller; 303. Flat push cylinder; 304. Push rod; 4. Electrode welding system; 401. Guide seat; 402. Laser welding head; 403. Electrode welding seat; 404. Welding workbench; 405. Sensor component; 406. Lifting cylinder; 407. 408. Vibration damping structure; 409. Vibration damping arm; 410. Cylinder; 5. Electrode sheet making system; 501. Electrode roll conveying chamber; 502. Electrode roll cutting chamber; 503. Electrode sheet handling robotic arm; 6. Electrode roll feeding system; 601. Electrode roll feeding rack; 602. Electrode roll recycling rack; 603. Input port; 604. Output port; 7. Drive system; 701. First winding drive motor; 8. Current collector winding system; 801. Current collector winding rack; 802. Second winding drive motor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-5 As shown, this utility model provides a winding-type electrode tab welding machine, including a machine base 1, a conveyor frame 101 for conveying current collectors and an mounting platform 102. The conveyor frame 101 is sequentially provided with a current collector feeding system 2, a current collector guiding system 3 and a current collector winding system 8. The mounting platform 102 is provided with an electrode tab welding system 4, an electrode sheet making system 5, an electrode roll feeding system 6 and a drive system 7. The drive system 7 is connected to the electrode roll feeding system 6 and the current collector winding system 8 respectively. The current collector passes through the current collector feeding system 2, the current collector guiding system 3 and the electrode tab welding system 4 in sequence and is then wound by the current collector winding system 8.

[0028] In this embodiment, the electrode rolls are placed in the electrode roll feeding system 6. The electrode roll feeding system 6 has an electrode roll feeding rack 601 and an electrode roll recycling rack 602. After the coil material is input into the electrode roll conveying chamber 501 of the electrode roll feeding rack 601, it is cut into electrode sheets of a specified size by the electrode roll cutting chamber 502. The cut electrode sheets fall into the electrode sheet material trough. The electrode sheet is placed on the current collector welding part by the electrode sheet handling robot arm 503. Automatic welding is performed by the sensor 405 to ensure the continuity and stability of the welding.

[0029] The current collector feeding system 2 includes a conveying roller group 201, the current collector guiding system 3 includes a guiding roller group 301 and a flattening assembly, and the current collector winding system 8 includes a current collector winding frame 801. The conveying roller group 201, the guiding roller group 301 and the flattening roller group 302 are arranged one by one on the conveyor frame 101, and the current collector winding frame 801 is connected to the mounting platform 102.

[0030] The mounting platform 102 is provided with a welding workbench 404 for installing the electrode welding system 4. The electrode welding system 4 includes an electrode welding seat 403, a laser welding head 402, a guide seat 401 and a lifting structure. The electrode welding seat 403 is connected to the welding workbench 404. A shock-absorbing structure 407 is provided at the connection between the electrode welding seat 403 and the welding workbench 404.

[0031] The electrode sheet manufacturing system 5 includes an electrode roll conveying chamber 501 and an electrode roll cutting chamber 502. The bottom of the electrode roll cutting chamber 502 is provided with an electrode sheet handling robotic arm 503. The electrode roll conveying chamber 501 is connected to the electrode roll feeding system 6. The electrode roll feeding system 6 includes an electrode roll feeding rack 601 and an electrode roll recycling rack 602. The electrode roll conveying chamber 501 is provided with an input port 603 and an output port 604 for conveying electrode tab rolls.

[0032] In this embodiment, after the current collector is input from one end of the conveyor frame 101, it passes sequentially through the conveyor roller group 201, the guide roller group 301, and the flattening assembly. The flattening assembly ensures that the composite current collector is evenly wound on the take-up drum, reducing wrinkles caused by uneven tension. When the current collector is conveyed to the welding worktable 404, the electrode tab is placed on the welding part of the current collector by the electrode handling robot arm 503, and the electrode tab is welded by laser welding. The welded current collector is then wound back onto the current collector take-up frame 801 by the conveyor roller.

[0033] Furthermore, the mounting platform 102 is vertically mounted on the machine base 1, and the mounting platform 102 is also provided with an adjustable mounting groove 103. The guide seat 401 is provided with a mounting guide post, which is fitted into the mounting groove 103. The machine base 1 is also provided with a control panel 104.

[0034] The cut electrode sheets fall into the electrode material tank, and are then placed on the current collector welding part by the electrode sheet handling robot arm. Automatic welding is performed by the sensor components to ensure the continuity and stability of the welding process.

[0035] Furthermore, the laser welding head 402 is connected to the guide seat 401 via a lifting structure. The lifting structure includes a lifting cylinder 406 and a connecting arm connected to the lifting cylinder 406. The connecting arm is connected to the laser welding head 402. The laser welding head 402 reciprocates along the direction of the electrode welding seat 403 via the connecting arm. The electrode welding seat 403 is also provided with a sensor 405.

[0036] After the current collector is input from one end of the conveyor frame, it passes through the conveyor roller group, the guide roller group and the flattening component in sequence. The flattening component can ensure that the composite current collector is evenly wound on the take-up drum, reducing the wrinkling phenomenon caused by uneven tension.

[0037] Furthermore, the shock absorption structure 407 includes a set of shock absorption arms 408, shock absorption shafts 409, and cylinders 410. The shock absorption arms 408 are V-shaped and located on one side of the welding workbench 404. The shock absorption arms 408 are connected to the cylinders 410 via the shock absorption shafts 409. The cylinders 410 are fixed to the side wall of the mounting platform 102.

[0038] Furthermore, the electrode roll feeding rack 601 and the electrode tab recycling rack are symmetrically arranged on the electrode roll conveying chamber 501. The electrode roll conveying chamber 501 is equipped with an electrode tab conveyor. The electrode roll conveying chamber 501 is connected to the electrode roll cutting chamber 502. The electrode roll cutting chamber 502 is equipped with a cutting machine unit for cutting electrode rolls. The cutting machine unit includes a longitudinal cutter and a transverse cutter. The electrode roll cutting chamber 502 is also equipped with an electrode tab scrap conveyor.

[0039] The electrode tabs are placed on the welding part of the current collector by a robotic arm for electrode handling, and the electrode tabs are welded by laser welding. The welded current collector is then wound up onto the current collector winding rack by a conveyor roller. This structure can effectively improve resource utilization, reduce waste in the production process, and reduce production costs.

[0040] Furthermore, the electrode scrap conveying component consists of multiple electrode conveying rollers, which are connected to stepper motors.

[0041] Furthermore, the drive system 7 includes a first winding drive motor 701 and a second winding drive motor 802. The first winding drive motor 701 is connected to the current collector winding frame 801, and the second winding drive motor 802 is connected to the tab take-up frame.

[0042] Furthermore, the flattening assembly includes a flattening roller 302, a flattening cylinder 303, and a push rod 304. The flattening roller 302 is connected to the push rod 304, and the push rod 304 moves along the X-axis direction of the conveyor frame 101 via the flattening cylinder 303.

[0043] Furthermore, the bottom of the electrode roll cutting chamber 502 is provided with an electrode material trough, and the electrode material handling robotic arm 503 is located below the electrode material trough. The electrode roll cutting chamber 502 is also provided with a control module connected to the electrode material handling robotic arm 503. The electrode material handling robotic arm 503 is provided with a suction cup, and the electrode material handling robotic arm 503 swings along the horizontal plane of the welding worktable 404 through the control module.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rewinding type electrode tab welding machine, characterized in that: The device includes a machine base, a conveyor frame for conveying the current collector, and an installation platform. The conveyor frame is sequentially equipped with a current collector feeding system, a current collector guiding system, and a current collector winding system. The installation platform is equipped with an electrode tab welding system, an electrode sheet making system, an electrode roll feeding system, and a drive system. The drive system is connected to the electrode roll feeding system and the current collector winding system, respectively. The mounting platform is equipped with a welding workbench for installing the electrode welding system. The electrode welding system includes an electrode welding seat, which is connected to the welding workbench. A shock-absorbing structure is provided at the connection between the electrode welding seat and the welding workbench. The shock-absorbing structure includes a set of shock-absorbing arms, a shock-absorbing shaft, and a cylinder. The shock-absorbing arms are V-shaped and located on one side of the welding workbench. The shock-absorbing arms are connected to the cylinder through the shock-absorbing shaft. The cylinder is fixed to the side wall of the mounting platform. The electrode sheet manufacturing system includes an electrode roll conveying chamber and an electrode roll cutting chamber. The bottom of the electrode roll cutting chamber is equipped with an electrode sheet handling robotic arm. The electrode roll conveying chamber is connected to the electrode roll feeding system. The electrode roll feeding system includes an electrode roll feeding rack and an electrode roll recycling rack. The electrode roll conveying chamber is equipped with an input port and an output port for conveying electrode tab rolls.

2. The rewinding electrode welding machine according to claim 1, characterized in that: The current collector feeding system includes a conveying roller group, the current collector guiding system includes a guiding roller group and a flattening assembly, and the current collector winding system includes a current collector winding frame. The conveying roller group, the guiding roller group and the flattening roller group are arranged one by one on the conveyor frame. The current collector winding frame is connected to the mounting platform, and the mounting platform is also provided with an adjustable mounting slot.

3. The rewinding electrode welding machine according to claim 1, characterized in that: The electrode welding system also includes a laser welding head, a guide seat, and a lifting structure. The laser welding head is connected to the guide seat through the lifting structure. The guide seat is provided with a mounting guide post, which fits into the mounting groove. The lifting structure includes a lifting cylinder and a connecting arm connected to the lifting cylinder. The connecting arm is connected to the laser welding head, and the laser welding head reciprocates along the direction of the electrode welding seat through the connecting arm.

4. The rewinding electrode welding machine according to claim 1, characterized in that: The bottom of the electrode roll cutting chamber is provided with an electrode material trough, and the electrode material handling robot arm is located below the electrode material trough. The electrode roll cutting chamber is also provided with a control module connected to the electrode material handling robot arm, and the electrode material handling robot arm is provided with a suction cup.

5. A rewinding electrode welding machine according to claim 1, characterized in that: The electrode roll feeding rack and the electrode tab recycling rack are symmetrically arranged on the electrode roll conveying chamber. The electrode roll conveying chamber is equipped with an electrode tab conveyor. The electrode roll conveying chamber is connected to the electrode roll cutting chamber. The electrode roll cutting chamber is equipped with a cutting machine unit for cutting electrode rolls. The cutting machine unit includes a longitudinal cutter and a transverse cutter. The electrode roll cutting chamber is also equipped with an electrode tab scrap conveyor.

6. A rewinding electrode welding machine according to claim 5, characterized in that: The electrode scrap conveyor consists of multiple electrode conveying rollers, which are connected to stepper motors.

7. A rewinding electrode welding machine according to claim 1, characterized in that: The drive system includes a first winding drive motor and a second winding drive motor. The first winding drive motor is connected to the current collector winding frame, and the second winding drive motor is connected to the tab take-up frame.

8. A rewinding electrode welding machine according to claim 2, characterized in that: The flattening assembly includes a flattening roller, a flattening cylinder, and a push rod. The flattening roller is connected to the push rod, and the push rod moves along the length of the conveyor frame via the flattening cylinder.

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