Equipment for laser welding point current collector of button cell word shell

Abstract

The invention discloses equipment for a button cell word shell laser welding point current collector, and relates to the technical field of lithium battery manufacturing equipment. Comprising a base, and a welding mechanism and a fixing mechanism are arranged at the top of the base; the welding mechanism comprises a driving assembly and a welding assembly, the welding assembly comprises a mounting block, a motor is mounted on one side of the mounting block, and the output end of the motor is fixedly connected with a mounting plate. Through the arrangement of the welding mechanism and the fixing mechanism, in the using process, firstly, the focus of the laser welding device is accurately adjusted to the optimal working distance of the surface of a workpiece, meanwhile, a motor can drive a mounting plate to rotate according to a preset program or visual feedback, and therefore the light emitting angle of the laser welding device is adjusted to the optimal state; and welding spot images are collected in real time in the whole process through the camera, the device can meet the welding path requirements of annular welding or complex space angles of the side wall of the button cell, and the flexibility is high.

Description

Technical Field

[0001] This invention relates to the field of lithium battery manufacturing equipment technology, specifically to equipment for laser welding current collectors for button cell casings. Background Technology

[0002] With the miniaturization and high performance development of consumer electronics, smart wearable devices and IoT terminals, button batteries are widely used due to their high energy density, compact structure and good reliability. As one of the key processes in button battery manufacturing, the quality of laser welding between the battery cover and the internal current collector directly determines the battery's conductivity, mechanical strength and long-term sealing reliability.

[0003] However, existing equipment suffers from drawbacks during use. Its internal clamping mechanisms are mostly rigid fixtures, and the laser head posture adjustment and visual monitoring functions are relatively independent. This results in a fixed laser welding head angle, making it difficult to adapt to the requirements of circumferential welding of button cell sidewalls or welding paths with complex spatial angles. This lack of process flexibility reduces work efficiency. Therefore, we propose a more convenient and practical device for laser welding current collectors on button cell sub-shells to meet these needs. Summary of the Invention

[0004] The purpose of this invention is to provide a device for laser welding current collectors for button cell sub-casings, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for laser welding current collectors for button cell casings, comprising a base, wherein a welding mechanism and a fixing mechanism are provided on the top of the base; the welding mechanism includes a driving component and a welding component, the welding component includes a mounting block, a motor is mounted on one side of the mounting block, a mounting plate is fixedly connected to the output end of the motor, a laser welder is mounted on one side of the mounting plate, a fixing plate is fixedly connected to the bottom side of the mounting plate, a connecting rod is inserted into the top side of the fixing plate, and a camera is mounted on one end of the connecting rod.

[0006] Furthermore, the drive assembly includes a first linear slide rail connected to a base, a first slider slidably connected to the top of the first linear slide rail, a second linear slide rail fixedly connected to one side of the top of the first slider, and a second slider fixedly connected to one side of the second linear slide rail.

[0007] Furthermore, a third linear slide rail is fixedly connected to one side of the second slider, and a third slider is fixedly connected to one side of the third linear slide rail. The third slider and the mounting block are connected to each other.

[0008] Furthermore, the fixing mechanism includes a rotating rod that is rotatably connected to the base, and a fixing frame is fixedly connected to one end of the rotating rod.

[0009] Furthermore, support blocks are fixedly connected to both sides of the top of the fixed frame, a cylinder is installed on one side of the support block, and a moving plate is fixedly connected to the output end of the cylinder.

[0010] Furthermore, a plurality of equidistant springs are fixedly connected to one side of the movable plate, and a clamping plate is fixedly connected to one end of each spring.

[0011] Compared with the prior art, the beneficial effects of the present invention are: This device for laser welding current collectors on button cell casings, through the setup of welding and fixing mechanisms, first fixes the laser welder to the mounting plate. Simultaneously, the camera and the welding point of the laser welder are aligned via the fixing plate and connecting rod. Upon receiving instructions from the control system, the first linear slide rail activates, driving the first slider to move the second linear slide rail horizontally, bringing the laser welder close to the target welding area. Subsequently, the second linear slide rail drives the second slider for fine-tuning of height. Simultaneously, the third linear slide rail activates, moving the third slider and welding components up and down, precisely adjusting the laser welder's focus to the optimal working distance on the workpiece surface. Meanwhile, the motor can drive the mounting plate to rotate according to a preset program or visual feedback, thereby adjusting the laser welder's beam angle to the optimal state. The camera captures real-time images of the weld points throughout the process. This device can adapt to the requirements of circumferential welding of button cell sidewalls or welding paths with complex spatial angles, offering high flexibility and practicality, making it suitable for widespread adoption.

[0012] Meanwhile, the fixing mechanism can adapt to slightly irregular battery casing or current collector surfaces to achieve uniform surface contact clamping, avoiding battery casing deformation or surface damage caused by rigid clamping. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall mechanism structure of the present invention; Figure 2 This is a schematic diagram of the welding mechanism structure of the present invention; Figure 3 This is a schematic diagram of the fixing mechanism of the present invention.

[0014] In the diagram: 1. Base; 2. Welding mechanism; 201. First linear slide rail; 202. First slider; 203. Second linear slide rail; 204. Second slider; 205. Third linear slide rail; 206. Third slider; 207. Mounting block; 208. Motor; 209. Mounting plate; 210. Laser welder; 211. Fixing plate; 212. Connecting rod; 213. Camera; 3. Fixing mechanism; 301. Rotating rod; 302. Fixing frame; 303. Support block; 304. Cylinder; 305. Moving plate; 306. Spring; 307. Clamping plate. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] like Figures 1-3 As shown, the present invention provides a technical solution: a device for laser welding current collectors for button cell casings, including a base 1, a welding mechanism 2 and a fixing mechanism 3 on the top of the base 1; the welding mechanism 2 includes a driving component and a welding component, the welding component includes a mounting block 207, a motor 208 is mounted on one side of the mounting block 207, a mounting plate 209 is fixedly connected to the output end of the motor 208, a laser welder 210 is mounted on one side of the mounting plate 209, a fixing plate 211 is fixedly connected to the bottom side of the mounting plate 209, a connecting rod 212 is inserted into the top side of the fixing plate 211, and a camera 213 is mounted on one end of the connecting rod 212.

[0017] like Figure 2 As shown, the drive assembly includes a first linear slide rail 201, which is connected to the base 1. A first slider 202 is slidably connected to the top of the first linear slide rail 201. A second linear slide rail 203 is fixedly connected to one side of the top of the first slider 202. A second slider 204 is fixedly connected to one side of the second linear slide rail 203. A third linear slide rail 205 is fixedly connected to one side of the second slider 204. A third slider 206 is fixedly connected to one side of the third linear slide rail 205. The third slider 206 is connected to the mounting block 207.

[0018] It should be noted that during use, the laser welder 210 is fixed on the mounting plate 209, and the welding point of the camera 213 and the laser welder 210 is aligned through the fixing plate 211 and the connecting rod 212. After receiving the command from the control system, the first linear slide rail 201 is activated, driving the first slider 202 to move the second linear slide rail 203 horizontally, so that the laser welder 210 approaches the target welding area over a large range. Then, the second linear slide rail 203 drives the second slider 204 to make fine adjustments to the height. At the same time, the third linear slide rail 205 is activated, driving the third slider 206 and the welding components to rise and fall, so as to precisely adjust the focus of the laser welder 210 to the optimal working distance on the workpiece surface. Meanwhile, the motor 208 can drive the mounting plate 209 to rotate according to the preset program or visual feedback, thereby adjusting the light emission angle of the laser welder 210 to the optimal state. The camera 213 collects the welding point image in real time throughout the process. The welding mechanism 2 realizes fine adjustment of the welding head height to accurately control the laser focal length and working distance.

[0019] like Figure 3As shown, the fixing mechanism 3 includes a rotating rod 301, which is rotatably connected to the base 1. A fixing frame 302 is fixedly connected to one end of the rotating rod 301. Support blocks 303 are fixedly connected to both sides of the top of the fixing frame 302. A cylinder 304 is installed on one side of the support block 303. A moving plate 305 is fixedly connected to the output end of the cylinder 304. Multiple equidistant springs 306 are fixedly connected to one side of the moving plate 305. A clamping plate 307 is fixedly connected to one end of each spring 306.

[0020] It should be noted that during use, the cylinder 304 is in the retracted state, the clamping plate 307 is released, and the pre-assembled button battery (with the current collector placed in the designated position on the casing) is placed into the designated area of ​​the fixing frame 302. Subsequently, the piston rod of the cylinder 304 extends, pushing the moving plate 305 to move towards the battery. The moving plate 305 transmits force to the clamping plate 307 through multiple evenly distributed springs 306. After the clamping plate 307 contacts the battery casing, each spring 306 will independently compress and deform according to the actual pressure at the contact point, thereby achieving adaptive and uniform coverage and clamping of the entire outer circle or end face of the battery casing. Finally, the angle of the workpiece is slightly adjusted by rotating the rotating rod 301. The fixing mechanism 3 can adapt to the slightly irregular surface of the battery casing or current collector, achieving uniform surface contact clamping and avoiding deformation or surface damage of the battery casing caused by rigid clamping.

[0021] During use, the pre-assembled button cell battery (with the current collector placed in the designated position on the casing) is placed into the designated area of ​​the fixing frame 302. Then, the piston rod of the cylinder 304 extends, pushing the moving plate 305 towards the battery. The moving plate 305 transmits force to the clamping plate 307 through multiple evenly distributed springs 306. After the clamping plate 307 contacts the battery casing, each spring 306 independently compresses and deforms according to the actual pressure at the contact point, thereby achieving adaptive and uniform clamping of the entire outer circle or end face of the battery casing. After receiving the command from the control system, the first linear slide rail 201 is activated, driving the first slider 202 to move the second linear slide rail 203 horizontally. The laser welder 210 is brought close to the target welding area. Then, the second linear slide rail 203 drives the second slider 204 to make fine adjustments to the height. At the same time, the third linear slide rail 205 is activated, driving the third slider 206 and the welding components to rise and fall, so that the focus of the laser welder 210 is precisely adjusted to the optimal working distance on the workpiece surface. Meanwhile, the motor 208 can drive the mounting plate 209 to rotate according to the preset program or visual feedback, thereby adjusting the light emission angle of the laser welder 210 to the optimal state. The camera 213 captures the weld point image in real time throughout the process. This device can adapt to the requirements of circumferential welding of button cell sidewalls or welding paths with complex spatial angles, and has a high degree of flexibility.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A device for laser welding current collectors for button cell casings, comprising a base (1), characterized in that: The base (1) is provided with a welding mechanism (2) and a fixing mechanism (3) on its top. The welding mechanism (2) includes a drive assembly and a welding assembly. The welding assembly includes a mounting block (207). A motor (208) is mounted on one side of the mounting block (207). A mounting plate (209) is fixedly connected to the output end of the motor (208). A laser welder (210) is mounted on one side of the mounting plate (209). A fixing plate (211) is fixedly connected to the bottom side of the mounting plate (209). A connecting rod (212) is inserted into the top side of the fixing plate (211). A camera (213) is mounted on one end of the connecting rod (212).

2. The device for laser welding current collectors for button cell casings according to claim 1, characterized in that: The drive assembly includes a first linear slide rail (201), which is connected to the base (1). A first slider (202) is slidably connected to the top of the first linear slide rail (201), and a second linear slide rail (203) is fixedly connected to one side of the top of the first slider (202). A second slider (204) is fixedly connected to one side of the second linear slide rail (203).

3. The device for laser welding current collectors for button cell casings according to claim 2, characterized in that: The second slider (204) is fixedly connected to a third linear slide rail (205) on one side, and the third linear slide rail (205) is fixedly connected to a third slider (206) on one side. The third slider (206) and the mounting block (207) are connected to each other.

4. The device for laser welding current collectors for button cell casings according to claim 1, characterized in that: The fixing mechanism includes a rotating rod (301), which is rotatably connected to the base (1), and a fixing frame (302) is fixedly connected to one end of the rotating rod (301).

5. The device for laser welding current collectors for button cell casings according to claim 4, characterized in that: Support blocks (303) are fixedly connected to the top two sides of the fixed frame (302), and a cylinder (304) is installed on one side of the support block (303). A moving plate (305) is fixedly connected to the output end of the cylinder (304).

6. The device for laser welding current collectors for button cell casings according to claim 5, characterized in that: A plurality of equidistant springs (306) are fixedly connected to one side of the movable plate (305), and a clamping plate (307) is fixedly connected to one end of the springs (306).

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