Nickel sheet laser welding pressure head mechanism

Abstract

The utility model relates to a nickel sheet laser welding pressure head mechanism, and relates to the technical field of laser welding. The device comprises a rack, a lifting plate and a galvanometer, a lifting assembly is arranged on the rack and connected with the lifting plate so as to drive the lifting plate to be adjusted, the galvanometer is connected to the surface of the lifting plate, a mounting frame is arranged below the lifting plate, and a laser pressing head is arranged at the end, away from the lifting plate, of the mounting plate. The mounting frame is provided with a buffer assembly, the laser pressure head is slidably connected to the mounting frame through the buffer assembly, the lifting plate is further provided with a camera, and the mounting frame is provided with a detection module used for detecting the distance between the nickel sheet and the galvanometer. The nickel plate welding device has the effects that the pressing force on the nickel plate in the welding process is improved, and the welding precision, the welding quality and the welding speed between the nickel plate and the battery aluminum bar are improved.

Description

Technical Field

[0001] The present application relates to the technical field of laser welding, and in particular to a nickel sheet laser welding pressure head mechanism. Background Art

[0002] A battery is a device that converts chemical energy, light energy, thermal energy and other forms of energy into electrical energy. It is widely used in various electronic devices, such as mobile phones, laptops, electric vehicles, flashlights, etc. Nickel sheets are an important component of batteries and are usually used as current collectors for the positive or negative electrodes of batteries. In battery production, the welding of nickel sheets is one of the key steps. Laser welding can achieve high-efficiency, high-precision, and low-cost welding effects, thereby improving the energy density and safety of batteries. However, existing welding equipment cannot guarantee the clamping force of nickel sheets, resulting in low welding precision between nickel sheets and aluminum bars, inadequate welding, and difficult to control welding precision. The welding quality and welding speed cannot be further improved, so there is room for improvement. Utility Model Content

[0003] In order to increase the clamping force on the nickel sheet during the welding process and improve the welding accuracy, welding quality and welding speed between the nickel sheet and the battery aluminum bar, the present application provides a nickel sheet laser welding pressure head mechanism.

[0004] The nickel sheet laser welding head mechanism provided in this application adopts the following technical solution:

[0005] A nickel sheet laser welding head mechanism comprises a frame, a lifting plate and a galvanometer, wherein the frame is provided with a lifting assembly, the lifting assembly is connected to the lifting plate to drive the lifting plate to be adjusted, the galvanometer is connected to the surface of the lifting plate, a mounting frame is provided below the lifting plate, a laser head is provided at one end of the mounting frame away from the lifting plate, a buffer assembly is provided on the mounting frame, the laser head is slidably connected to the mounting frame through the buffer assembly, a camera is also provided on the lifting plate, and a detection module for detecting the distance between the nickel sheet and the galvanometer is provided on the mounting frame.

[0006] By adopting the above technical solution, after the nickel sheet to be welded is placed, the lifting assembly is started, and the laser pressure head is driven downward by the lifting assembly to ensure that the laser pressure head can press the nickel sheet so that the nickel sheet and the aluminum bar can be in close contact. The camera quickly locates and takes pictures to determine the position of the nickel sheet. The detection assembly measures the distance between the nickel sheet and the galvanometer. By continuing to control the lifting assembly and the buffer assembly, the laser focal length is controlled. After the adjustment is completed, laser welding can be performed to ensure the welding quality and welding accuracy.

[0007] Optionally, the lifting assembly includes a screw rod, a fixed block, a first slide rail, a motor and a synchronous pulley, the screw rod is vertically arranged in the frame, the screw rod is rotatably connected to the frame, the fixed block is sleeved on the peripheral wall of the screw rod, the fixed block is threadedly connected to the screw rod, the first slide rail is arranged in the frame, the first slide rail is arranged parallel to the screw rod, the fixed block is slidably connected to the first slide rail, and the lifting plate is connected to the surface of the fixed block; the motor is arranged on the side wall of the frame, and the synchronous pulley is connected between the output shaft of the motor and the screw rod for transmitting the screw rod.

[0008] By adopting the above technical solution, the motor is started, and the screw rod is transmitted through the synchronous pulley. The threaded cooperation between the screw rod and the fixed block enables the fixed block to slide along the first slide rail. During this process, the lifting plate will rise and fall with the fixed block, thereby driving the movement of components such as the galvanometer, camera, and laser pressure head. The lifting assembly of the present application has a simple structure, is easy to operate, and has high convenience and practicality.

[0009] Optionally, the buffer assembly includes a second slide rail, a slider, a spring and a limit block, the second slide rail is vertically arranged on the side wall of the mounting frame, the slider is slidably connected to the second slide rail, the laser pressure head is connected to the bottom wall of the slider, the spring is vertically connected to the top wall of the slider, the limit block is connected to the side wall of the mounting frame, the limit block is located above the spring, and the spring abuts against the limit block and the slider.

[0010] By adopting the above technical solution, when the lifting assembly drives the laser pressure head to contact the nickel sheet, when the lifting assembly continues to move downward, the slider can slide upward along the second slide rail, so that the lifting assembly can continue to adjust the position of the galvanometer, which has high flexibility and practicality.

[0011] Optionally, a limiting hole for inserting the upper end of the spring is opened on the bottom wall of the limiting block, and the upper end of the spring abuts against the bottom wall of the limiting hole.

[0012] By adopting the above technical solution, the setting of the limiting hole can limit the compression trajectory of the spring, thereby maintaining the operating stability of the buffer assembly.

[0013] Optionally, a light source is further provided on the lifting plate, fixed brackets are provided on both sides of the light source, a U-shaped groove is opened on the fixed bracket, a connecting piece is provided on the side wall of the light source facing the fixed bracket, and the light source is fixed in the U-shaped groove through the connecting piece.

[0014] By adopting the above technical solution, setting a light source can provide fill light for the camera, thereby improving the accuracy of the camera operation. At the same time, setting a fixed bracket and connecting parts can facilitate the adjustment of the height of the light source to adjust to the optimal fill light point, which has high flexibility.

[0015] Optionally, two air inlet holes are opened at the end of the laser pressure head.

[0016] By adopting the above technical solution, the air inlet can ensure air circulation of the laser pressure head during the welding process, thereby improving the welding accuracy and safety.

[0017] Optionally, a dust suction component is provided on one side of the laser pressure head.

[0018] By adopting the above technical solution, the dust suction component can remove the dust near the nickel sheet, thereby ensuring the welding effect.

[0019] Optionally, a wind knife assembly is provided on the frame, and the wind knife assembly is located below the galvanometer.

[0020] By adopting the above technical solution, the wind knife assembly can blow away the dust under the galvanometer, thereby ensuring the welding effect on the nickel sheet.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. This application can flexibly adjust the distance between the galvanometer and the nickel sheet by adjusting the lifting assembly and the buffer assembly, while ensuring that the laser pressure head provides sufficient pressing force to the nickel sheet, so as to improve the welding quality and welding accuracy by adjusting the laser focal length;

[0023] 2. Setting the light source can provide fill light for the camera, thereby improving the accuracy of camera operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a nickel sheet laser welding pressure head mechanism in an embodiment of the present application.

[0025] Figure 2 It is a structural schematic diagram of the lifting assembly in the embodiment of the present application.

[0026] Figure 3 It is a schematic diagram of the structure of the laser indenter in an embodiment of the present application.

[0027] Figure 4 It is a schematic diagram of the structure of the buffer component in the embodiment of the present application.

[0028] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 2. Lifting plate; 3. Vibrating mirror; 4. Lifting assembly; 401. Screw rod; 402. Fixed block; 403. First slide rail; 404. Motor; 405. Synchronous pulley; 5. Mounting frame; 6. Laser pressure head; 601. Air inlet; 7. Buffer assembly; 701. Second slide rail; 702. Slider; 703. Spring; 704. Limit block; 7041. Limit hole; 8. Camera; 9. Detection module; 10. Light source; 11. Fixed bracket; 1101. U-shaped groove; 12. Connector; 13. Dust suction assembly; 14. Wind knife assembly. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-5 This application is described in further detail.

[0031] The present application embodiment discloses a nickel sheet laser welding head mechanism. Figure 1 and Figure 2 , including a frame 1, a lifting plate 2 and a galvanometer 3. The frame 1 is located above the welding table. A lifting assembly 4 is provided on the frame 1. The lifting assembly 4 is connected to the lifting plate 2 to drive the lifting plate 2 to adjust; the lifting assembly 4 includes a screw rod 401, a fixed block 402, two first slide rails 403, a motor 404 and a synchronous pulley 405. The screw rod 401 is vertically arranged in the frame 1. The screw rod 401 and the frame 1 are rotatably connected through a bearing. The fixed block 402 is sleeved on the peripheral wall of the screw rod 401. The fixed block 402 is threadedly connected to the screw rod 401. The two first slide rails 403 are both provided with In the frame 1, the first slide rail 403 is arranged parallel to the screw rod 401, the screw rod 401 is located between the first slide rails 403 on both sides, and the fixed sleeve is nested on the first slide rail 403 to limit the fixed block 402; the motor 404 is connected to the side wall of the frame 1 by bolts, one end of the screw rod 401 passes through the frame 1, and the synchronous pulley 405 is connected between the output shaft of the motor 404 and the screw rod 401 to transmit the screw rod 401, thereby driving the fixed block 402 to rise and fall, and the lifting plate 2 is connected to the surface of the fixed block 402 by bolts to follow the fixed block 402 to rise and fall.

[0032] Reference Figure 1, the galvanometer 3 is connected to the surface of the lifting plate 2 by bolts, and a wind knife assembly 14 is arranged on one side of the frame 1 to blow off the dust under the galvanometer 3 to improve the quality and accuracy of subsequent laser welding; the lifting plate 2 is also detachably connected with a camera 8 and a light source 10, and the camera 8 is used to determine the position of the nickel sheet, thereby driving the galvanometer 3 to descend through the lifting assembly 4, and fixed brackets 11 are arranged on both sides of the light source 10, and the fixed brackets 11 are connected to the lifting plate 2 by bolts, and a U-shaped groove 1101 is provided on the fixed bracket 11, and a connecting piece 12 is arranged on the side wall of the light source 10 facing the fixed bracket 11, and the light source 10 is fixed between the fixed brackets 11 on both sides through the connecting piece 12, and the position of the light source 10 can be adjusted up and down through the U-shaped groove 1101 to achieve a better fill light effect.

[0033] Reference Figure 3 and Figure 4 A mounting frame 5 is connected to the bottom of the lifting plate 2 by bolts, and a laser pressure head 6 is arranged at one end of the mounting frame away from the lifting plate 2. Two air inlet holes 601 are provided at the end of the laser pressure head 6 to facilitate air circulation when the nickel sheet is pressed for welding; a buffer component 7 is arranged on the mounting frame 5 to further adjust the focal length of the galvanometer 3 when the laser pressure head 6 is pressed against the nickel sheet.

[0034] Reference Figure 4 and Figure 5 The buffer assembly 7 includes a second slide rail 701, a slider 702, a spring 703 and a limit block 704. The second slide rail 701 is vertically arranged on the side wall of the mounting frame 5 by bolts. The slider 702 is slidably connected to the second slide rail 701. The laser pressure head 6 is detachably connected to the bottom wall of the slider 702 by bolts. The spring 703 is vertically connected to the top wall of the slider 702. One end of the spring 703 is connected to the top wall of the slider 702 by gluing. The limit block 704 is connected to the side wall of the mounting frame 5 by welding. The limit block 704 is located above the spring 703. A limit hole 7041 is opened on the bottom wall of the limit block 704 for the upper end of the spring 703 to be pressed into. The upper end of the spring 703 is inserted into the limit hole 7041 and pressed against the top wall of the limit hole 7041, thereby achieving the effect of adjusting the focal length while maintaining the clamping force on the nickel sheet.

[0035] Reference Figure 1 A detection module 9 for detecting the distance between the nickel sheet and the galvanometer 3 is arranged on the mounting frame 5. In this embodiment, the detection module 9 can select a magnetic scale to accurately detect the distance between the nickel sheet and the galvanometer 3; a dust suction component 13 is arranged on one side of the laser pressure head 6 to absorb dust, thereby achieving the effect of improving welding quality and accuracy.

[0036] The implementation principle of a nickel sheet laser welding pressure head mechanism in an embodiment of the present application is as follows: after the nickel sheet to be welded is placed, the lifting component 4 is started, and the laser pressure head 6 is driven downward by the lifting component 4 to ensure that the laser pressure head 6 can press the nickel sheet so that the nickel sheet and the aluminum bar can be in close contact, thereby ensuring the clamping force on the nickel sheet; the camera 8 quickly locates and takes pictures to determine the position of the nickel sheet, and the detection component measures the distance between the nickel sheet and the galvanometer 3, and the laser focal length is controlled by continuing to control the lifting component 4 and the buffer component 7. After the adjustment is completed, laser welding can be performed. The laser welding pressure head mechanism of the present application can effectively provide compression for the nickel sheet, thereby ensuring welding quality and welding accuracy.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A nickel sheet laser welding head mechanism, characterized in that: The invention comprises a frame (1), a lifting plate (2) and a galvanometer (3); the frame (1) is provided with a lifting assembly (4); the lifting assembly (4) is connected to the lifting plate (2) so as to drive the lifting plate (2) to adjust; the galvanometer (3) is connected to the surface of the lifting plate (2); a mounting frame (5) is provided below the lifting plate (2); a laser pressure head (6) is provided at one end of the mounting frame (5) away from the lifting plate (2); a buffer assembly (7) is provided on the mounting frame (5); the laser pressure head (6) is slidably connected to the mounting frame (5) via the buffer assembly (7); a camera (8) is also provided on the lifting plate (2); and a detection module (9) for detecting the distance between the nickel sheet and the galvanometer (3) is provided on the mounting frame (5).

2. A nickel sheet laser welding pressure head mechanism according to claim 1, characterized in that: The lifting assembly (4) comprises a screw rod (401), a fixing block (402), a first slide rail (403), a motor (404) and a synchronous pulley (405); the screw rod (401) is vertically arranged in the frame (1); the screw rod (401) is rotatably connected to the frame (1); the fixing block (402) is sleeved on the peripheral wall of the screw rod (401); the fixing block (402) is threadedly connected to the screw rod (401); the first slide rail (403) ) is arranged in the frame (1), the first slide rail (403) is arranged parallel to the screw rod (401), the fixed block (402) is slidably connected to the first slide rail (403), and the lifting plate (2) is connected to the surface of the fixed block (402); the motor (404) is arranged on the side wall of the frame (1), and the synchronous pulley (405) is connected between the output shaft of the motor (404) and the screw rod (401) to transmit the screw rod (401).

3. A nickel sheet laser welding pressure head mechanism according to claim 1, characterized in that: The buffer assembly (7) comprises a second slide rail (701), a slider (702), a spring (703) and a limit block (704); the second slide rail (701) is vertically arranged on the side wall of the mounting frame (5); the slider (702) is slidably connected to the second slide rail (701); the laser pressure head (6) is connected to the bottom wall of the slider (702); the spring (703) is vertically connected to the top wall of the slider (702); the limit block (704) is connected to the side wall of the mounting frame (5); the limit block (704) is located above the spring (703); and the spring (703) abuts against the limit block (704) and the slider (702).

4. A nickel sheet laser welding pressure head mechanism according to claim 3, characterized in that: The bottom wall of the limiting block (704) is provided with a limiting hole (7041) for inserting the upper end of the spring (703), and the upper end of the spring (703) abuts against the bottom wall of the limiting hole (7041).

5. The nickel sheet laser welding pressure head mechanism according to claim 1, characterized in that: A light source (10) is also provided on the lifting plate (2), and fixing brackets (11) are provided on both sides of the light source (10), a U-shaped groove (1101) is provided on the fixing bracket (11), and a connecting piece (12) is provided on the side wall of the light source (10) facing the fixing bracket (11), and the light source (10) is fixed in the U-shaped groove (1101) via the connecting piece (12).

6. A nickel sheet laser welding pressure head mechanism according to claim 1, characterized in that: Two air inlet holes (601) are provided at the end of the laser pressure head (6).

7. The nickel sheet laser welding pressure head mechanism according to claim 1, characterized in that: A dust collection component (13) is provided on one side of the laser pressure head (6).

8. The nickel sheet laser welding pressure head mechanism according to claim 1, characterized in that: The frame (1) is provided with a wind knife assembly (14), and the wind knife assembly (14) is located below the galvanometer (3).

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