Lithium battery spot welder

Abstract

The utility model relates to mechanical manufacturing technical field mainly relates to a kind of lithium battery spot welding machine, it includes: workbench and spot welding mechanism;The workbench is horizontally arranged, the workbench is used to load the spot welding mechanism setting, the spot welding mechanism includes spot welding pen, lifting module, longitudinal movement module and transverse movement module, the lifting module drives the spot welding pen and is vertically arranged, the longitudinal movement module drives the spot welding pen and is arranged along the longitudinal direction of the workbench, the transverse movement module drives the spot welding pen and is arranged along the transverse direction of the workbench, high-precision spot welding is realized, and the consistency of spot welding is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, and mainly to a lithium battery spot welding machine. Background Technology

[0002] With the explosive growth of the new energy industry, lithium batteries, as the core energy carrier for electric vehicles, energy storage systems and consumer electronics, have seen an exponential increase in market demand. Early spot welding equipment had a simple structure, mostly handheld welding guns or foot-operated welding machines, lacked automated control modules, had low precision and slow response, which was not conducive to the production of large quantities of products.

[0003] Application number CN202222585112.0 discloses a lithium battery spot welding machine, relating to the field of spot welding machine technology. Addressing the problem that existing spot welding machines can only operate in a single row, resulting in low efficiency and the need for manual material unloading, this invention proposes the following solution: A placement plate is provided, with a vertical plate at its top. A fixed plate is movably fitted inside the vertical plate. Mounting seats are connected to both sides of the bottom of the fixed plate. A push rod motor is housed inside the mounting seats, and the output shaft of the push rod motor is fixedly connected to a spot welding gun. A movable plate is connected between the two mounting seats, and a driving assembly is fitted inside the movable plate. A rotating plate is rotatably connected to the placement plate below the mounting seats. This invention facilitates simultaneous spot welding of two rows, improving the efficiency of spot welding. Furthermore, after spot welding, the rotating plate is tilted to facilitate the sliding of the lithium battery for unloading, eliminating the need for manual unloading and making it quick and efficient.

[0004] However, the existing technology still has shortcomings: 1. During spot welding, it can only move in one direction and cannot perform flexible spot welding by lifting, moving laterally and longitudinally. 2. Since the positioning fixture cannot be automatically adjusted according to the height of the lithium battery, the fit during spot welding is difficult to guarantee.

[0005] Therefore, there is an urgent need for a lithium battery spot welding machine that is both highly flexible and robust. Utility Model Content

[0006] To address the above issues, a highly flexible and robust lithium battery spot welding machine was developed. Through the coordinated operation of three-dimensional modules—horizontal, vertical, and lifting—high-precision positioning of the spot welding pen is achieved, facilitating spot welding and ensuring consistency, thus effectively improving production efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A lithium battery spot welding machine, comprising: Workbench and spot welding mechanism; The workbench is horizontally positioned and is used to support the spot welding mechanism. The spot welding mechanism includes a spot welding pen, a lifting module, a longitudinal moving module, and a transverse moving module. The lifting module drives the spot welding pen to move up and down in the vertical direction. The longitudinal moving module drives the spot welding pen to move longitudinally along the workbench. The transverse moving module drives the spot welding pen to move laterally along the workbench.

[0008] As an improvement, the lifting module includes a lifting cylinder, a lifting guide rail, and a lifting slider. The lifting guide rail is fixedly arranged in the vertical direction, the lifting slider is slidably engaged with the lifting guide rail, the spot welding pen is fixedly connected to the lifting slider, and the output end of the lifting cylinder is drivenly connected to the lifting slider and drives the lifting slider to move up and down in the vertical direction of the lifting guide rail.

[0009] As an improvement, the longitudinal movement module includes a longitudinal cylinder, a longitudinal guide rail, and a longitudinal slider. The longitudinal guide rail is fixedly arranged along the longitudinal direction of the worktable. The longitudinal slider is slidably engaged with the longitudinal guide rail. The lifting module is fixedly connected to the longitudinal slider. The output end of the longitudinal cylinder is drivenly connected to the longitudinal slider and drives the longitudinal slider to move along the longitudinal direction of the longitudinal guide rail.

[0010] As an improvement, the lateral movement module includes a lateral cylinder, a lateral guide rail, and a lateral slider. The lateral guide rail is fixedly arranged along the lateral direction of the worktable. The lateral slider is slidably engaged with the lateral guide rail. One end of the longitudinal movement module is fixedly connected to the lateral slider. The output end of the lateral cylinder is drivenly connected to the lateral slider and drives the lateral slider to move along the lateral direction of the lateral guide rail.

[0011] As an improvement, a mating module is provided at the bottom of the other end of the longitudinal moving module. The mating module is arranged parallel to the transverse moving module. The mating module includes a mating slider and a mating guide rail. The mating slider is fixedly connected to the bottom of the other end of the longitudinal moving module. The mating slider moves with the longitudinal moving module and slides on the mating guide rail.

[0012] As an improvement, the workbench is also equipped with a material carrier platform, which has a positioning groove for placing lithium batteries. The lithium batteries are fixedly positioned by positioning blocks on both sides of the positioning groove. The positioning blocks are fixedly connected to the output end of the positioning cylinder, and the positioning blocks can be raised and lowered by the positioning cylinder.

[0013] As an improvement, a sensor is also provided on one side of the loading platform, and the sensor is fixed to the side of the worktable near the feeding end of the loading platform by a bracket.

[0014] The beneficial effects of this utility model are as follows: (1) In this utility model, the high-precision positioning of the spot welding pen is achieved through the coordinated linkage of the horizontal, vertical and lifting three-dimensional modules, which fundamentally ensures the consistency of the welding points. Each module adopts cylinder drive, guide rail and slider sliding cooperation. The cylinder output force is stable and the guide rail has high guiding accuracy, avoiding deviation or jamming during the movement. The horizontal and vertical modules independently adjust the spot welding pen to achieve three-dimensional coordination to achieve precise descent and spot welding of the welding points. (2) The positioning groove provided in this utility model can realize the rapid introduction and initial positioning of lithium batteries without manual repeated calibration, thus improving the feeding efficiency. The positioning block driven by the positioning cylinder can flexibly adjust the pressing height according to the lithium batteries of different heights, and accurately fit with the upper surface or edge of the lithium battery. It can adapt to products of multiple heights without changing the positioning fixture. (3) In this utility model, the sensor at the feeding end detects in real time whether the lithium battery is in place. Once it is confirmed that the material has entered the preset position, a signal is immediately sent to the control system to avoid welding without material or welding due to material deviation.

[0015] In summary, this utility model provides a highly flexible and stable lithium battery spot welding machine, which effectively improves welding reliability and product production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 A magnified structural diagram of part A in the diagram; Figure 3 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 .

[0017] In the diagram: 1. Workbench, 11. Material loading platform, 12. Positioning slot, 13. Positioning block, 14. Sensor, 15. Positioning cylinder, 2. Spot welding mechanism, 21. Spot welding pen, 22. Lifting module, 221. Lifting cylinder, 222. Lifting guide rail, 223. Lifting slider, 23. Longitudinal movement module, 231. Longitudinal cylinder, 232. Longitudinal guide rail, 233. Longitudinal slider, 24. Lateral movement module, 241. Lateral cylinder, 242. Lateral guide rail, 243. Lateral slider, 25. Mating module, 251. Mating slider, 252. Mating guide rail. Detailed Implementation

[0018] 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.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] Example 1: like Figures 1 to 3 As shown, a lithium battery spot welding machine includes: Workbench 1 and spot welding mechanism 2; The workbench 1 is horizontally arranged and is used to support the spot welding mechanism 2. The spot welding mechanism 2 includes a spot welding pen 21, a lifting module 22, a longitudinal moving module 23, and a transverse moving module 24. The lifting module 22 drives the spot welding pen 21 to move up and down in the vertical direction. The longitudinal moving module 23 drives the spot welding pen 21 to move longitudinally along the workbench 1. The transverse moving module 24 drives the spot welding pen 21 to move laterally along the workbench 1.

[0022] The lifting module 22 includes a lifting cylinder 221, a lifting guide rail 222, and a lifting slider 223. The lifting guide rail 222 is fixedly arranged in the vertical direction, and the lifting slider 223 is slidably engaged with the lifting guide rail 222. The spot welding pen 21 is fixedly connected to the lifting slider 223. The output end of the lifting cylinder 221 is connected to the lifting slider 223 and drives the lifting slider 223 to move up and down in the vertical direction of the lifting guide rail 222.

[0023] The longitudinal moving module 23 includes a longitudinal cylinder 231, a longitudinal guide rail 232, and a longitudinal slider 233. The longitudinal guide rail 232 is fixedly arranged along the longitudinal direction of the worktable 1. The longitudinal slider 233 is slidably engaged with the longitudinal guide rail 232. The lifting module 22 is fixedly connected to the longitudinal slider 233. The output end of the longitudinal cylinder 231 is connected to the longitudinal slider 233 and drives the longitudinal slider 233 to move along the longitudinal direction of the longitudinal guide rail 232.

[0024] The transverse movement module 24 includes a transverse cylinder 241, a transverse guide rail 242, and a transverse slider 243. The transverse guide rail 242 is fixedly arranged transversely along the worktable 1. The transverse slider 243 is slidably engaged with the transverse guide rail 242. One end of the longitudinal movement module 23 is fixedly connected to the transverse slider 243. The output end of the transverse cylinder 241 is connected to the transverse slider 243 and drives the transverse slider 243 to move in the transverse direction along the transverse guide rail 242.

[0025] A mating module 25 is provided at the bottom of the other end of the longitudinal moving module 23. The mating module 25 is arranged parallel to the transverse moving module 24. The mating module 25 includes a mating slider 251 and a mating guide rail 252. The mating slider 251 is fixedly connected to the bottom of the other end of the longitudinal moving module 23. The mating slider 251 moves with the longitudinal moving module 23 and slides on the mating guide rail 252.

[0026] It should be noted that the longitudinal moving module 23 is connected to the transverse slider 243 at one end and supported by the cooperating module 25 at the other end, forming a two-point support structure. This can effectively counteract the torque effect of the gravity of the spot welding pen 21 and the lifting module 22 on the longitudinal guide rail 232, reduce the wear of the guide rail and the slider, extend the service life and maintain long-term positioning accuracy.

[0027] The workbench 1 is also provided with a material carrier 11. The material carrier 11 is provided with a positioning groove 12 for placing lithium batteries 10. The lithium batteries 10 are fixedly set by positioning blocks 13 on both sides of the positioning groove 12. The positioning blocks 13 are fixedly connected to the output end of the positioning cylinder 15. The positioning blocks 13 can be raised and lowered by the positioning cylinder 15.

[0028] It should be noted that the combination of the positioning groove 12 and the liftable positioning block 13 not only enables the rapid introduction of materials through the positioning groove 12, but also allows the positioning block 13 to be height-adapted to lithium batteries of different heights, thus solving the problem of low efficiency of a single positioning method.

[0029] A sensor 14 is also provided on one side of the loading platform 11. The sensor 14 is fixed to the side of the workbench 1 near the feeding end of the loading platform 11 by a bracket.

[0030] Working principle: After the power is turned on, the spot welding pen 21, the lifting module 22, the longitudinal moving module 23 and the transverse moving module 24 all return to their initial positions, and the worktable 1 remains in a horizontal and stable state, waiting for the workpiece to be loaded.

[0031] Feeding inspection stage: The lithium battery 10 workpiece to be spot welded is placed in the positioning groove 12 of the material carrier 11 of the workbench 1. The sensor 14 fixed on the feeding end side of the workbench 1 detects that the lithium battery 10 has entered the preset position, and then sends a material arrival signal to the equipment control system.

[0032] Battery positioning stage: After receiving the sensor signal, the control system drives the positioning cylinder 15 on the loading platform 11 to move. The output end of the positioning cylinder 15 extends and drives the positioning block 13 connected to it to descend vertically until the positioning block 13 is in contact with the upper surface or edge of the lithium battery 10. The initial limiting of the positioning groove 12 and the active pressing of the positioning block 13 form a double fixation to ensure that the lithium battery 10 does not shift during the welding process.

[0033] Positioning stage of spot welding mechanism: After the battery is fixed, the control system synchronously starts the horizontal, vertical and lifting modules of spot welding mechanism 2. Through three-dimensional linkage, the spot welding pen 21 is accurately positioned. The horizontal cylinder 2241 drives the horizontal slider 243 to slide along the horizontal guide rail 242, which drives the vertical moving module 23 connected to it to move along the worktable 1 in conjunction with the overall module 25, adjusting the horizontal coordinate of the spot welding pen. Then, the vertical cylinder 231 drives the vertical slider 233 to slide along the vertical guide rail 232, which drives the lifting module 22 and the spot welding pen 21 connected to it to move along the worktable 1 in the vertical direction, adjusting the vertical coordinate of the spot welding pen. Finally, after the spot welding pen 21 reaches the welding point directly above the welding point through horizontal and vertical movement, the lifting cylinder 221 drives the lifting slider 223 to descend vertically along the lifting guide rail 222, bringing the spot welding pen 21 closer to the welding part of the lithium battery 10 until the preset welding height is reached.

[0034] Spot welding stage: After the spot welding pen 21 reaches the designated position, the control system sends a welding signal to the spot welding pen. The spot welding pen 21 generates a large current and discharges for a short time through the internal electrode. The resistance heat generated by the current flowing through the electrode and the contact point with the lithium battery tab causes the contact point to melt locally and form a weld point, thus completing the spot welding action.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery spot welding machine, characterized in that, include: Workbench (1) and spot welding mechanism (2); The workbench (1) is set horizontally and is used to support the spot welding mechanism (2). The spot welding mechanism (2) includes a spot welding pen (21), a lifting module (22), a longitudinal moving module (23), and a transverse moving module (24). The lifting module (22) drives the spot welding pen (21) to move up and down in the vertical direction. The longitudinal moving module (23) drives the spot welding pen (21) to move longitudinally along the workbench (1). The transverse moving module (24) drives the spot welding pen (21) to move laterally along the workbench (1).

2. The lithium battery spot welding machine according to claim 1, characterized in that: The lifting module (22) includes a lifting cylinder (221), a lifting guide rail (222), and a lifting slider (223). The lifting guide rail (222) is fixedly arranged in the vertical direction. The lifting slider (223) is slidably engaged with the lifting guide rail (222). The spot welding pen (21) is fixedly connected to the lifting slider (223). The output end of the lifting cylinder (221) is connected to the lifting slider (223) and drives the lifting slider (223) to move up and down in the vertical direction of the lifting guide rail (222).

3. A lithium battery spot welding machine according to claim 1, characterized in that: The longitudinal moving module (23) includes a longitudinal cylinder (231), a longitudinal guide rail (232), and a longitudinal slider (233). The longitudinal guide rail (232) is fixedly arranged along the longitudinal direction of the worktable (1). The longitudinal slider (233) is slidably engaged with the longitudinal guide rail (232). The lifting module (22) is fixedly connected to the longitudinal slider (233). The output end of the longitudinal cylinder (231) is connected to the longitudinal slider (233) and drives the longitudinal slider (233) to move along the longitudinal direction of the longitudinal guide rail (232).

4. A lithium battery spot welding machine according to claim 1, characterized in that: The transverse movement module (24) includes a transverse cylinder (241), a transverse guide rail (242), and a transverse slider (243). The transverse guide rail (242) is fixedly arranged in the transverse direction of the worktable (1). The transverse slider (243) is slidably engaged with the transverse guide rail (242). One end of the longitudinal movement module (23) is fixedly connected to the transverse slider (243). The output end of the transverse cylinder (241) is connected to the transverse slider (243) and drives the transverse slider (243) to move in the transverse direction of the transverse guide rail (242).

5. A lithium battery spot welding machine according to claim 1, characterized in that: The other end of the longitudinal moving module (23) is provided with a mating module (25). The mating module (25) is arranged parallel to the transverse moving module (24). The mating module (25) includes a mating slider (251) and a mating guide rail (252). The mating slider (251) is fixedly connected to the other end of the longitudinal moving module (23). The mating slider (251) moves with the longitudinal moving module (23) and slides on the mating guide rail (252).

6. A lithium battery spot welding machine according to claim 1, characterized in that: The workbench (1) is also provided with a material carrier (11). The material carrier (11) is provided with a positioning groove (12) for placing lithium batteries (10). The lithium batteries (10) are fixedly set by positioning blocks (13) on both sides of the positioning groove (12). The positioning blocks (13) are fixedly connected to the output end of the positioning cylinder (15). The positioning blocks (13) can be raised and lowered by the positioning cylinder (15).

7. A lithium battery spot welding machine according to claim 6, characterized in that: A sensor (14) is also provided on one side of the loading platform (11). The sensor (14) is fixed to the side of the workbench (1) near the feeding end of the loading platform (11) by a bracket.

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