A thermal battery cover plate precision laser welding machine

Abstract

The utility model provides a kind of thermocell cover plate precision laser welding machine, it is related to battery production technical field, including workbench, the upper end of the workbench is movably installed with rotating stand, several battery cases are placed on the rotating stand, battery cover is engaged and installed on the battery case, support frame is installed on the workbench, and welding mechanism is installed in the lower end of the support frame.In the utility model, the placing groove on the rotating stand can accurately position the battery case, avoiding lateral deviation, while the transmission rod at four corners in the welding mechanism cooperates with the abutting block, can evenly apply force to press from the surface of battery cover, and the spring inside the transmission rod and the extension rod constitute a buffer structure, which can avoid workpiece damage when pressing, ensure that the shell cover is tightly attached during welding process, ultimately guarantee that the weld is formed regular, meet the absolute air tightness required for long-term storage of thermocell.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and more specifically, to a precision laser welding machine for thermal battery cover plates. Background Technology

[0002] In the production of thermal batteries, the welding of the battery casing and battery cover is a critical process that directly affects product performance. Currently, the industry mainly uses traditional argon arc welding and laser welding processes. Traditional argon arc welding has a large heat input, which easily leads to product deformation, insufficient precision control, and difficulty in meeting quality requirements. However, laser welding has a low heat input, high precision, and strong flexibility. For example, the laser welding device for battery caps proposed in application number "CN202021125342.3" includes a fixed structure, welding equipment, and a base. The fixed structure is fixedly installed on the ground on one side of the welding equipment by bolts, and the fixed structure also includes a base.

[0003] However, in the above technical solutions, due to the lack of a dedicated positioning and clamping mechanism for thermal battery workpieces, the battery shell and battery cover are prone to relative displacement during the welding process, resulting in weld misalignment and failing to guarantee the absolute airtightness required for long-term storage of thermal batteries. Therefore, we propose a precision laser welding machine for thermal battery cover plates to solve the above problems. Utility Model Content

[0004] The main purpose of this utility model is to provide a precision laser welding machine for thermal battery cover plates, which solves the problem that due to the lack of a dedicated positioning and clamping mechanism for thermal battery workpieces, the battery shell and battery cover are prone to relative displacement during the welding process, resulting in weld seam misalignment and failure to guarantee the absolute airtightness required for long-term storage of thermal batteries.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A precision laser welding machine for thermal battery covers includes a worktable. A rotating frame is movably mounted on the upper end of the worktable, and several battery shells are placed on the rotating frame. Battery covers are snapped onto the battery shells. A support frame is mounted on the worktable, and a welding mechanism is mounted on the lower end of the support frame. The welding mechanism includes a support plate, which is movably located at the rear end between the worktable and the support frame. A transmission rod is movably mounted through each of the four corners of the lower surface of the support plate. A clamping block is mounted at the lower end of each transmission rod, and the clamping block is respectively in contact with the surface of the battery cover. A cross-shaped electric slide rail is mounted on the lower surface of the support plate, and a slider is mounted on the cross-shaped electric slide rail. A second cylinder is mounted inside the lower end of the slider, and a welding head is mounted at the output end of the second cylinder. A first cylinder is mounted at the rear end of the upper surface of the support frame, and the output end of the first cylinder movably passes through the interior of the support frame and is connected to the support plate.

[0007] Preferably, a second motor is installed on the lower surface of the workbench, and the output end of the second motor moves through the interior of the workbench and is connected to the rotating frame. The upper surface of the rotating frame is provided with several placement slots, and the battery case is respectively engaged and installed inside the placement slots.

[0008] Preferably, support blocks are installed at the four corners of the upper surface of the support plate, and the shafts of the transmission rods are movably installed inside the support blocks. First gears are installed at the upper ends of the transmission rods, and the first gears that are close to each other are meshed together.

[0009] Preferably, sprockets are respectively installed on the upper surfaces of the first gears located on both sides and far apart from one end, and a chain is sleeved between the sprockets. A first motor is installed at one end of the upper surface of the support plate, and a second gear is installed at the output end of the first motor. The second gear is meshed with the first gear.

[0010] Preferably, the lower end of the transmission rod is provided with a movable groove, and an extension rod is movably installed through the lower end of the movable groove. The lower end of the extension rod is connected to the abutment block.

[0011] Preferably, a spring is installed between the movable groove and the extension rod, a limiting block is installed in the middle of the upper inner surface of the movable groove, a limiting groove is provided at the upper inner end of the extension rod, and the limiting block is engaged and installed inside the limiting groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The placement slot on the rotating frame in this utility model can accurately position the battery case and avoid lateral displacement. At the same time, the transmission rods at the four corners of the welding mechanism cooperate with the clamping blocks to apply force evenly from the surface of the battery cover and press it. The spring and extension rod inside the transmission rod form a buffer structure, which can avoid damage to the workpiece when pressing and ensure that the cover fits tightly during the welding process. Finally, it ensures that the weld is formed regularly and meets the absolute airtightness required for long-term storage of thermal batteries.

[0014] (2) In this utility model, the first motor controls the second gear to rotate, and then the second gear can drive the first gear. Then, the sprocket drives the left and right sets of first gears synchronously, so that the first gear can control the clamping block to be located at the upper end of the battery cover in the initial state to press down and position the battery cover. Then, after the battery cover and battery shell are initially welded and positioned, the first motor can control the first gear to reverse, thereby controlling the clamping block and battery shell to separate, so that the welding head can perform all-round welding at the connection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a precision laser welding machine for thermal battery cover plates according to this utility model;

[0016] Figure 2 This is a front view structural schematic diagram of a precision laser welding machine for thermal battery cover plates according to the present invention;

[0017] Figure 3 This is a side view of the structure of a precision laser welding machine for a thermal battery cover according to the present invention.

[0018] Figure 4 This utility model relates to a precision laser welding machine for thermal battery cover plates. Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0019] Figure 5 This utility model relates to a precision laser welding machine for thermal battery cover plates. Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0020] Figure 6 This utility model relates to a precision laser welding machine for thermal battery cover plates. Figure 3 Schematic diagram of the cross-sectional structure at the CC section;

[0021] Figure 7 This utility model relates to a precision laser welding machine for thermal battery cover plates. Figure 4 Enlarged structural diagram at point D;

[0022] Figure 8 This utility model relates to a precision laser welding machine for thermal battery cover plates. Figure 5 Enlarged structural diagram at point E in the middle.

[0023] In the diagram: 1. Workbench; 2. Rotating frame; 3. Support frame; 4. Welding mechanism; 401. First cylinder; 402. Support plate; 403. Support block; 404. Transmission rod; 405. First gear; 406. Sprocket; 407. Chain; 408. Second gear; 409. First motor; 410. Movable groove; 411. Extension rod; 412. Spring; 413. Limiting block; 414. Limiting groove; 415. Clamping block; 416. Cross electric slide rail; 417. Slider; 418. Second cylinder; 419. Welding head; 5. Placement groove; 6. Battery casing; 7. Battery cover; 8. Second motor. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0025] like Figures 1 to 8 As shown in the figure, this utility model embodiment proposes a precision laser welding machine for thermal battery covers, including a worktable 1, a rotating frame 2 movably mounted on the upper end of the worktable 1, a plurality of battery shells 6 placed on the rotating frame 2, and battery covers 7 snapped onto the battery shells 6. A support frame 3 is mounted on the worktable 1, and a welding mechanism 4 is mounted on the lower end of the support frame 3. The welding mechanism 4 includes a support plate 402, which is movably located at the rear end between the worktable 1 and the support frame 3. Transmission rods 404 are movably installed through the four corners of the lower surface of the support plate 402. The lower end of the transmission rod 404 is respectively equipped with abutting blocks 415, which are respectively attached to the surface of the battery cover 7. The lower surface of the support plate 402 is equipped with a cross electric slide rail 416, and a slider 417 is installed on the cross electric slide rail 416. The lower end of the slider 417 is equipped with a second cylinder 418, and the output end of the second cylinder 418 is equipped with a welding head 419. The rear end of the upper surface of the support frame 3 is equipped with a first cylinder 401, and the output end of the first cylinder 401 moves through the interior of the support frame 3 and is connected to the support plate 402.

[0026] like Figures 4 to 8As shown, in another embodiment of this utility model, a second motor 8 is installed on the lower surface of the workbench 1. The output end of the second motor 8 movably passes through the interior of the workbench 1 and is connected to the rotating frame 2. The upper surface of the rotating frame 2 is provided with several placement slots 5. Battery cases 6 are respectively snapped into the interior of the placement slots 5. Support blocks 403 are respectively installed at the four corners of the upper surface of the support plate 402. The shafts of the transmission rods 404 are respectively movably installed through the interior of the support blocks 403. First gears 405 are respectively installed at the upper ends of the transmission rods 404. The first gears 405 that are close to each other are meshed. Sprockets 406 are respectively installed on the upper surfaces of the first gears 405 located on both sides and far from one end. Sprockets 406 are sleeved between the sprockets 406. A chain 407 is installed. A first motor 409 is installed at one end of the upper surface of the support plate 402. A second gear 408 is installed at the output end of the first motor 409. The second gear 408 is meshed with the first gear 405. The lower end of the transmission rod 404 is provided with a movable groove 410. An extension rod 411 is movably installed through the lower end of the movable groove 410. The lower end of the extension rod 411 is connected to a pressing block 415. A spring 412 is installed between the movable groove 410 and the extension rod 411. A limit block 413 is installed in the middle of the upper surface of the movable groove 410. A limit groove 414 is provided at the upper end of the extension rod 411. The limit block 413 is engaged and installed inside the limit groove 414.

[0027] The battery casings (6) to be welded are respectively snapped into the placement slots (5) on the upper surface of the rotating frame (2), and the battery cover (7) is snapped into the corresponding battery casings (6). Then, the second motor (8) on the lower surface of the workbench (1) is started. The output end of the second motor (8) drives the rotating frame (2) to rotate, and the set of placement slots (5) containing the battery casings (6) and battery cover (7) is transferred to the area directly below the welding mechanism (4). Then, the first cylinder (401) at the rear end of the upper surface of the support frame (3) is started. 1) The output end pushes the support plate (402) downward until the abutment block (415) at the lower end of the four corner transmission rods (404) on the lower surface of the support plate (402) is in contact with the surface of the battery cover (7). Then, as the abutment block 415 and the surface of the battery cover 7 are in contact and the support plate 402 continues to move downward, the abutment block 415 can move upward along the movable groove 410 through the extension rod 411 and be squeezed by the spring 412. Then, after the support plate 402 moves to the designated position, the cross electric slide rail 416 and the slider 41 7. The welding head 419 can be moved to perform preliminary positioning welding at the connection between the battery casing 6 and the battery cover 7. After the preliminary positioning welding is completed, the first cylinder 401 pulls the support plate 402 upward, and then the support plate 402 can drive the clamping block 415 and the battery cover 7 to separate. Then the first motor 409 can control the second gear 408 to rotate, and then the second gear 408 can drive the first gear 405 to rotate. 405 can drive the transmission rod 404 and the extension rod 411 to rotate, so that the extension rod 411 drives the clamping block 415 to rotate at a 90° angle, so that the clamping block 415 temporarily disengages from the upper end of the battery cover 7, so that the clamping block 415 will not hinder the welding work of the welding head 419. Then, the first cylinder 401 controls the support plate 402 to move down again, so that the cross electric slide rail 416 cooperates with the slider 417 and the welding head 419 to realize the all-round welding work at the gap between the battery cover 7 and the battery shell 6.

[0028] The sprocket 406 and chain 407 are used to drive the first gear 405, so that the clamping block 415 presses down on the battery cover 7 before the battery shell 6 and the battery cover 7 are welded. Then the welding head 419 can first perform preliminary welding work on the connection between the battery cover 7 and the battery shell 6 that is not covered by the clamping block 415, and complete the preliminary connection work between the battery cover 7 and the battery shell 6. After the preliminary connection, the clamping block 415 can be removed, thereby realizing the complete welding work at the connection between the battery cover 7 and the battery shell 6.

[0029] The second cylinder 418 is used to further adjust the distance between the welding head 419 and the battery cover 7, thereby improving the precision of the welding process.

[0030] The working principle of a precision laser welding machine for thermal battery cover plates:

[0031] In use, firstly, the battery casings (6) to be welded are respectively snapped into the placement slots (5) on the upper surface of the rotating frame (2), and then the battery cover (7) is snapped into the corresponding battery casings (6). Then, the second motor (8) on the lower surface of the workbench (1) is started. The output end of the second motor (8) drives the rotating frame (2) to rotate, and the set of placement slots (5) containing the battery casings (6) and battery cover (7) is transferred to the area directly below the welding mechanism (4). Then, the first cylinder (401) at the rear end of the upper surface of the support frame (3) is started. The output end of the cylinder (401) pushes the support plate (402) downward until the abutment block (415) at the lower end of the four corner transmission rods (404) on the lower surface of the support plate (402) is in contact with the surface of the battery cover (7). Then, as the abutment block 415 and the surface of the battery cover 7 are in contact and the support plate 402 continues to move downward, the abutment block 415 can move upward along the movable groove 410 through the extension rod 411 and be squeezed by the spring 412. Then, after the support plate 402 moves to the designated position, the cross electric slide rail 416 and the slide rail... Block 417 controls the movement of welding head 419 to perform preliminary positioning welding at the connection between battery casing 6 and battery cover 7. After the preliminary positioning welding is completed, first cylinder 401 pulls support plate 402 upward, and then support plate 402 can drive the clamping block 415 and battery cover 7 to separate. Then, first motor 409 controls second gear 408 to rotate, and second gear 408 can drive first gear 405 to rotate. Wheel 405 can drive transmission rod 404 and extension rod 411 to rotate, so that extension rod 411 drives clamping block 415 to rotate at a 90° angle, so that clamping block 415 temporarily disengages from the upper end of battery cover 7, so that clamping block 415 does not obstruct the welding work of welding head 419. Then, first cylinder 401 controls support plate 402 to move down again, so that cross electric slide rail 416 cooperates with slider 417 and welding head 419 to realize the all-round welding work at the gap between battery cover 7 and battery shell 6.

[0032] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A precision laser welding machine for thermal battery cover plates, comprising a worktable (1), characterized in that: A rotating frame (2) is movably mounted on the upper end of the workbench (1). Several battery cases (6) are placed on the rotating frame (2), and battery covers (7) are snapped onto the battery cases (6). A support frame (3) is mounted on the workbench (1), and a welding mechanism (4) is mounted on the lower end of the support frame (3). The welding mechanism (4) includes a support plate (402), which is movably located at the rear end between the workbench (1) and the support frame (3). A transmission rod (404) is movably installed through the four corners of the lower surface of the support plate (402), and a transmission rod (404) is installed at the lower end of the transmission rod (404). A clamping block (415) is attached to the surface of the battery cover (7). A cross electric slide rail (416) is installed on the lower surface of the support plate (402). A slider (417) is installed on the cross electric slide rail (416). A second cylinder (418) is installed at the lower end of the slider (417). A welding head (419) is installed at the output end of the second cylinder (418). A first cylinder (401) is installed at the rear end of the upper surface of the support frame (3). The output end of the first cylinder (401) moves through the interior of the support frame (3) and is connected to the support plate (402).

2. The precision laser welding machine for thermal battery cover plates according to claim 1, characterized in that: The lower surface of the workbench (1) is equipped with a second motor (8). The output end of the second motor (8) moves through the interior of the workbench (1) and is connected to the rotating frame (2). The upper surface of the rotating frame (2) is provided with several placement slots (5). The battery case (6) is respectively engaged and installed inside the placement slots (5).

3. The precision laser welding machine for thermal battery cover plates according to claim 1, characterized in that: Support blocks (403) are installed at the four corners of the upper surface of the support plate (402). The shaft of the transmission rod (404) is movably installed inside the support block (403). The upper end of the transmission rod (404) is equipped with a first gear (405), and the first gears (405) that are close to each other are meshed and connected.

4. The precision laser welding machine for a thermal battery cover plate according to claim 3, characterized in that: On the upper surfaces of the first gear (405) located on both sides and far apart from one end, sprockets (406) are respectively installed. A chain (407) is sleeved between the sprockets (406). A first motor (409) is installed at one end of the upper surface of the support plate (402). A second gear (408) is installed at the output end of the first motor (409). The second gear (408) is meshed with the first gear (405).

5. The precision laser welding machine for a thermal battery cover plate according to claim 1, characterized in that: The lower end of the transmission rod (404) is provided with a movable groove (410), and an extension rod (411) is movably installed through the lower end of the movable groove (410). The lower end of the extension rod (411) is connected to the abutment block (415).

6. A precision laser welding machine for a thermal battery cover plate according to claim 5, characterized in that: A spring (412) is installed between the movable groove (410) and the extension rod (411). A limiting block (413) is installed in the middle of the inner upper surface of the movable groove (410). A limiting groove (414) is provided at the inner upper end of the extension rod (411). The limiting block (413) is engaged and installed inside the limiting groove (414).

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