A microfilament laser automatic welding device and welding method

Abstract

This invention relates to an automated laser welding device for microfilaments, comprising a welding platform; a three-dimensional motion platform, a butt joint deviation detection device, a control device, and a laser welding torch fixedly mounted on the welding platform; a first clamp for clamping a first microfilament on the three-dimensional motion platform; a second clamp for clamping a second microfilament on one side of the first clamp, the second clamp being fixedly connected to the welding platform; the butt joint deviation detection device is correspondingly arranged on one side of the first and second clamps, used to detect the butt joint deviation between the first and second microfilaments and send the deviation to the control device; the control device is used to control the three-dimensional motion platform to adjust the posture of the first clamp according to the butt joint deviation, so as to achieve butt joint between the first and second microfilaments; the laser welding torch is used to weld the butt jointed first and second microfilaments. This device enables rapid positioning and alignment of microfilaments and automatic welding, automatic detection of microfilament tension, and improves microfilament welding efficiency, welding quality, and tension detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of laser micro-connection technology, specifically to an automatic laser welding device and welding method for microfilaments. Background Technology

[0002] The aerospace electronics industry often involves the connection of micro-wires (with a diameter of less than 0.2 mm). Traditional resistance welding requires a high level of operator skill and has a low yield of finished joints, making it difficult to meet production needs.

[0003] Lasers have the characteristics of small focused spot size, small heat-affected zone, high energy density and precise controllable heat input, making them very suitable for the precision connection of micro-components. Laser welding technology can not only meet the requirements of mass production, miniaturization and precision connection of aerospace components, but also meet the technical needs of micro-connection for the development of new technologies in the aerospace field. It is the current development trend of micro-wire connection technology.

[0004] In the traditional laser welding process for micro-wires, when the micro-wires are joined, a camera is usually used to magnify the joint area of ​​the two micro-wires. The positional deviation of the magnified joint between the two micro-wires is observed by eye, and then the position of the micro-wires is manually adjusted to align the two micro-wires. Then, the laser welding gun is used manually for welding. This results in low quality of welded micro-wires and low welding efficiency.

[0005] The inability to quickly align two microfilaments during laser welding, resulting in low welding quality and efficiency, has become a pressing technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of the problems existing in the prior art, one of the objectives of the present invention is to provide a micro-filament laser automatic welding device that can achieve rapid alignment and improve welding quality and welding efficiency.

[0007] The second objective of this invention is to provide an automated laser welding method for microfilaments.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An automated laser welding device for microfilaments includes a welding platform;

[0010] The welding platform is equipped with a three-dimensional motion platform, a butt joint deviation detection device, a control device, and a laser welding gun.

[0011] The three-dimensional motion platform is equipped with a first clamp for holding the first microfilament;

[0012] The first clamp is provided with a second clamp on one side for clamping the second micro wire, and the second clamp is fixed to the welding platform;

[0013] The docking deviation detection device is arranged on one side of the first fixture and the second fixture respectively, and is used to detect the docking deviation between the first microfilament and the second microfilament and send the docking deviation to the control device.

[0014] The control device is used to control the three-dimensional motion platform to adjust the posture of the first fixture according to the docking deviation, so as to realize the docking of the first microfilament and the second microfilament;

[0015] Laser welding guns are used to weld together the first and second micro-wires that have been joined together.

[0016] Furthermore, the welding platform is equipped with a welding torch translation device, which is connected to the laser welding torch and is used to drive the laser welding torch to move horizontally above the first and second clamps to adjust the welding position.

[0017] Furthermore, the docking deviation between the first microfilament and the second microfilament includes the position information of the first microfilament and the second microfilament on the XOY plane of the welding area and the position information of the first microfilament and the second microfilament on the YOZ plane of the welding area.

[0018] Furthermore, the docking deviation detection device includes a vertical camera and a horizontal camera. The vertical camera is positioned above the first clamp and the second clamp and is used to detect the position information of the first microfilament and the second microfilament in the XOY plane of the welding area. The horizontal camera is connected to the welding platform and is used to detect the position information of the first microfilament and the second microfilament in the YOZ plane of the welding area.

[0019] Furthermore, the welding platform is equipped with a tension detection device for detecting the tension of the micro-wire after welding, including a tensioning wheel assembly for tensioning the micro-wire after welding and a tension sensor. The tensioning wheel assembly is located on both sides of the first clamp and the second clamp and is aligned with the arrangement direction of the first clamp and the second clamp. The tension sensor is connected to the tensioning wheel assembly.

[0020] Furthermore, the tensioning wheel assembly includes a drive wheel, a first follower wheel, a second follower wheel, a third follower wheel, a fourth follower wheel, and a detection wheel. The drive wheel, the first follower wheel, the fourth follower wheel, the detection wheel, the third follower wheel, the first clamp, the second clamp, and the second follower wheel are arranged in sequence and aligned. The height of the second follower wheel and the third follower wheel is greater than the height of the first clamp and the second clamp. The tension sensor is connected to the detection wheel.

[0021] Furthermore, the driving wheel, the first follower wheel, the fourth follower wheel, the detection wheel, the third follower wheel, the first clamp, the second clamp, and the second follower wheel are all provided with slots for placing microfilaments.

[0022] A method for automated laser welding of microfilaments, employing an automated laser welding device for microfilaments, includes the following steps:

[0023] The first microfilament and the second microfilament are respectively clamped in the first clamp and the second clamp;

[0024] The docking deviation detection device is used to detect the docking deviation between the first and second microfilaments and the docking deviation is sent to the control device.

[0025] The control device controls the three-dimensional motion platform to adjust the posture of the first fixture according to the docking deviation, so as to realize the docking of the first microfilament and the second microfilament;

[0026] The first and second microfilaments are welded using a laser welding gun.

[0027] Furthermore, the method for detecting the docking deviation between the first and second microfilaments using a docking deviation detection device is as follows:

[0028] A vertical camera is used to detect the position information of the first and second microfilaments in the XOY plane of the welding area; a horizontal camera is used to detect the position information of the first and second microfilaments in the YOZ plane of the welding area.

[0029] Furthermore, tension testing of the microfilaments is performed after welding, including the following steps:

[0030] The drive wheel rotates, causing the welded microwire to be pulled upwards from the first and second clamps after being subjected to tension;

[0031] Continue rotating the drive wheel to tighten the welded microwire, and use the detection wheel to tension and detect the tension of the welded microwire.

[0032] In summary, the present invention has the following advantages:

[0033] Compared to existing technologies that use a camera to magnify the joint area of ​​two microfilaments and then visually observe the magnified joint position deviation of the two microfilaments before manually adjusting the position of the microfilaments to align them, this invention uses a docking deviation detection device to detect the docking deviation between the first and second microfilaments. Then, based on the docking deviation, it controls a three-dimensional motion platform to adjust the posture of the first fixture, enabling rapid docking of the first and second microfilaments and automatic welding using a laser welding gun. This avoids the instability that occurs during manual alignment by operators and welding, thus improving welding quality and efficiency. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0035] Figure 2 This is a schematic diagram of the main structure of the laser welding unit of the present invention;

[0036] Figure 3This is a top view and related enlarged schematic diagrams of the tension detection device of the present invention;

[0037] Figure 4 This is a front view of the tension detection device of the present invention;

[0038] Figure 5 This is a schematic diagram of the laser welding and tension detection process of the present invention.

[0039] In the picture:

[0040] 101-First motor, 102-First coupling, 103-Gantry frame, 104-Screw fixing mechanism, 105-Horizontal camera, 106-Laser welding torch, 107-Vertical camera, 108-Screw motion platform, 109-First micro-wire, 110-Clamp bracket, 111-Three-dimensional motion platform, 112-First clamp, 113-Second clamp, 114-Welding platform, 115-Second micro-wire, 116-Third micro-wire, 117-Laser welding torch Y-direction moving mechanism;

[0041] 201-Tension detection bracket, 202-First bracket, 203-Second bracket, 204-Third bracket, 205-Second motor, 206-First fixing washer, 207-First fixing screw, 208-Driving wheel, 209-Second coupling, 210-First follower wheel, 211-Fourth bracket, 212-Second follower wheel, 213-Second fixing screw, 214-Second fixing washer, 215-Fixing strip, 216-Third follower wheel, 217-Fourth follower wheel, 218-Detection wheel, 219-Second follower wheel bracket, 220-First follower wheel bracket, 221-Third fixing washer, 222-Fourth fixing washer;

[0042] 301 - Control Panel, 302 - Control Host. Detailed Implementation

[0043] The present invention will now be described in further detail.

[0044] like Figures 1-4 As shown, a microfilament laser automatic welding device includes a welding platform 114;

[0045] The welding platform 114 is fixed with a three-dimensional motion platform 111, a butt joint deviation detection device, a control device, and a laser welding gun 106;

[0046] The three-dimensional motion platform 111 is equipped with a first clamp 112 for clamping the first microfilament 109;

[0047] The first clamp 112 has a second clamp 113 on one side for clamping the second micro filament 115, and the second clamp 113 is fixed to the welding platform 114;

[0048] The docking deviation detection device is arranged on one side of the first clamp 112 and the second clamp 113 respectively, and is used to detect the docking deviation between the first microfilament 109 and the second microfilament 115 and send the docking deviation to the control device.

[0049] The control device is used to control the three-dimensional motion platform 111 to adjust the posture of the first clamp 112 according to the docking deviation, so as to realize the docking of the first microfilament 109 and the second microfilament 115;

[0050] The laser welding gun 106 is used to weld the first micro filament 109 and the second micro filament 115 that have been joined together.

[0051] Compared to existing technologies that use a camera to magnify the joint area of ​​two microfilaments and then visually observe the magnified joint position deviation of the two microfilaments before manually adjusting the position of the microfilaments to align them, this invention uses a docking deviation detection device to detect the docking deviation between the first microfilament 109 and the second microfilament 115. Then, based on the docking deviation, the three-dimensional motion platform 111 is controlled to adjust the posture of the first clamp 112, which enables the first microfilament 109 and the second microfilament 115 to quickly dock and automatically perform welding using a laser welding gun 106. This avoids the instability caused by manual alignment by operators and welding processes, and is beneficial to improving welding quality and welding efficiency.

[0052] Specifically, the microfilament laser automatic welding device includes a control device, a laser welding unit, and a tension detection device, which can realize high-quality and high-efficiency laser welding of microfilaments, and can also detect the tension of microfilaments after welding.

[0053] The control device is connected to the laser welding unit and the tension detection device via signal connection lines. The control device includes a control panel 301 and a control host 302; the control panel 301 is connected to and controls the control host 302 via signal connection lines and is fixed on the welding platform 114; the control host 302 is connected to and controls the first motor 101, the second motor 205, the horizontal camera 105, the laser welding torch 106, the vertical camera 107, the three-dimensional motion platform 111, and the laser welding torch Y-direction moving mechanism 117 (welding torch translation device) via signal connection lines and is fixedly connected to the welding platform 114.

[0054] The laser welding unit includes a first motor 101, a first coupling 102, a gantry frame 103, a lead screw fixing mechanism 104, a laser welding gun 106, a lead screw motion platform 108, a fixture bracket 110, a first fixture 112, a second fixture 113, and a welding platform 114.

[0055] The first motor 101 is connected to the lead screw motion platform 108 via the first coupling 102. The lead screw motion platform 108 is connected to the lead screw fixing mechanism 104. The lead screw fixing mechanism 104 is fixedly connected to the gantry frame 103. The gantry frame 103 is fixedly connected to the welding platform 114.

[0056] The laser welding gun Y-direction moving mechanism 117 and the vertical camera 107 are both fixedly connected to the lead screw motion platform 108. The laser welding gun 106 is connected to the laser welding gun Y-direction moving mechanism 117. The horizontal camera 105 is fixedly connected to the gantry frame 103. The fixture bracket 110 and the three-dimensional motion platform 111 are both fixedly connected to the welding platform 114. The first fixture 112 is fixedly connected to the three-dimensional motion platform 111. The second fixture 113 is fixedly connected to the fixture bracket 110. The first micro-wire 109 and the second micro-wire 115 are welded together to form the third micro-wire 116. The horizontal camera 105 is located on the horizontal plane of the welding area. The welding area is the contact area between the first micro-wire 109 and the second micro-wire 115. The first fixture 112 and the second fixture 113 are both designed with "V" shaped grooves for placing the micro-wires.

[0057] Specifically, the tension detection device includes a tension detection bracket 201, a first bracket 202, a second bracket 203, a third bracket 204, a second motor 205, a first fixing washer 206, a first fixing screw 207, a drive wheel 208, a second coupling 209, a first follower wheel 210, a fourth bracket 211, a second follower wheel 212, a second fixing screw 213, a second fixing washer 214, a fixing strip 215, a third follower wheel 216, a fourth follower wheel 217, a detection wheel 218, a second follower wheel bracket 219, a first follower wheel bracket 220, a third fixing washer 221, and a fourth fixing washer 222.

[0058] Tension detection bracket 201 is fixedly connected to welding platform 114. First bracket 202, second bracket 203, third bracket 204 and second motor 205 are fixedly connected to tension detection bracket 201. First bracket 202, second bracket 203 and third bracket 204 are all designed with rectangular positioning grooves. All rectangular positioning grooves have rectangular through holes at the bottom for bolt and nut fixing. All rectangular positioning grooves and rectangular through holes are parallel to each other. First follower wheel 210 and second follower wheel 212 are both designed with "V" shaped grooves. Drive wheel 208, third follower wheel 216, fourth follower wheel 217 and detection wheel 218 are all designed with rectangular grooves for placing micro filaments.

[0059] Specifically, the second follower wheel bracket 219 is fixedly connected to the large rectangular positioning groove of the first bracket 202 by bolts and nuts. The second follower wheel 212 is fixedly connected to the second follower wheel bracket 219 and can rotate freely. The fixing strip 215 is fixedly connected to the small rectangular positioning groove of the first bracket 202 by bolts and nuts. One end of the fixing strip 215 is connected to the second fixing screw 213 through a threaded hole. There are a second fixing washer 214 and a fourth fixing washer 222 between the fixing strip 215 and the second fixing screw 213. The second microfilament 115 is pressed and fixed between the second fixing washer 214 and the fourth fixing washer 222 by the second fixing screw 213.

[0060] In existing technologies, for microfilaments requiring tension control, the welded microfilaments often need to be manually removed from the fixture and placed into another tension testing device for manual tension testing, resulting in low efficiency. This embodiment improves tension testing efficiency by incorporating an automatic release structure, allowing the welded microfilaments to automatically detach from the fixture for tension testing without manual intervention.

[0061] Specifically, the fourth bracket 211 is fixedly connected to the rectangular positioning groove of the second bracket 203 by bolts and nuts. The third follower wheel 216, the fourth follower wheel 217 and the detection wheel 218 are all fixedly connected to the fourth bracket 211 and can all rotate freely. The third follower wheel 216 and the fourth follower wheel 217 are at the same height. The detection wheel 218 contains a tension sensor, is located between the third follower wheel 216 and the fourth follower wheel 217, and is lower than the third follower wheel 216 and the fourth follower wheel 217. The upper parts of the second follower wheel 212 and the third follower wheel 216 are both higher than the upper surface of the second clamp 113 by a certain height. When the drive wheel 208 rotates to detect tension, since the upper parts of the second follower wheel 212 and the third follower wheel 216 are both higher than the upper surface of the second clamp 113, the welded third micro filament 116 will be stretched after being subjected to tension. The third micro filament 116 between the second follower wheel 212 and the third follower wheel 216 will be straightened, and thus automatically detach from the second clamp 113 by relying on tension.

[0062] Specifically, the first follower wheel bracket 220 is fixedly connected to the rectangular positioning groove of the third bracket 204 by bolts and nuts. The first follower wheel 210 is fixedly connected to the first follower wheel bracket 220 and can rotate freely. The drive wheel 208 is fixedly connected to the second motor 205 through the second coupling 209, and the center of the annular surface of the drive wheel 208 is connected to the first fixing screw 207 through a threaded hole. There are a first fixing washer 206 and a third fixing washer 221 between the drive wheel 208 and the first fixing screw 207. The first microfilament 109 is pressed and fixed between the first fixing washer 206 and the third fixing washer 221 by the first fixing screw 207.

[0063] like Figure 5As shown, a method for automated laser welding and tension detection of microfilaments includes the following steps:

[0064] Step 1: Adjust the device and initialize the program settings;

[0065] Step 2: Processing of the first micro wire 109 and the second micro wire 115 of the welding material, including the installation of the first micro wire 109 and the second micro wire 115;

[0066] Step 3: The first microfilament 109 is aligned with the second microfilament 115;

[0067] Step 4: Weld the connection area of ​​the first microfilament 109 and the second microfilament 115 to obtain the welded third microfilament 116;

[0068] Step 5: Tension detection of the third microfilament 116;

[0069] Specifically, the device adjustment includes adjusting the positions of the second coupling 209, the first follower wheel bracket 220, the fourth bracket 211, the second follower wheel bracket 219, and the fixing strip 215 to ensure that the middle of the second fixing shim 214 and the fourth fixing shim 222, the second follower wheel 212, the "V" groove of the second clamp 113, the "V" groove of the first clamp 112, the third follower wheel 216, the detection wheel 218, the fourth follower wheel 217, the first follower wheel 210, and the first fixing screw 207 are aligned. The control host 302 controls the first motor 101 to move, so that the vertical camera 107 moves to directly above the welding area.

[0070] Specifically, the program initialization settings include setting parameters such as the material, end face size, and tension of the first micro-wire 109 and the second micro-wire 115 to be welded in the control panel 301, and the control host 302 automatically adjusts the laser welding process parameters of the laser welding gun 106 according to the internal process program.

[0071] Specifically, the processing of the first micro filament 109 and the second micro filament 115 of the welding material includes cleaning the end faces of the first micro filament 109 and the second micro filament 115 to ensure the cleanliness of the part to be welded, and using special scissors to cut the end faces of the first micro filament 109 and the second micro filament 115 flat.

[0072] Specifically, the installation of the first microfilament 109 includes fixing one end of the first microfilament 109, which has been arranged, in the "V" groove of the first clamp 112, and controlling the length of the welding end of the first microfilament 109 extending out of the first clamp 112 to be 3-4 mm. Then, the first microfilament 109 passes over the third follower wheel 216, under the detection wheel 218, over the fourth follower wheel 217, and over the first follower wheel 210, and is finally fixed on the annular surface of the drive wheel 208. The installation of the second microfilament 115 includes fixing one end of the second microfilament 115, which has been arranged, in the "V" groove of the second clamp 113, and the welding end of the second microfilament 115 extends out of the second clamp 113 by 3-4 mm. Then, the second microfilament 115 passes over the upper part of the second follower wheel 212 and is finally fixed on the outer end face of the fixing strip 215.

[0073] Specifically, the alignment of the first microfilament 109 with the second microfilament 115 includes the vertical camera 107 identifying the position information of the first microfilament 109 and the second microfilament 115 in the XOY plane of the welding area, and the horizontal camera 105 identifying the position information of the first microfilament 109 and the second microfilament 115 in the YOZ plane of the welding area. The control host 302 calculates the corresponding position deviation based on the position information, and then controls the movement of the three-dimensional motion platform 111 to adjust the position of the first microfilament 109 on the first fixture 112, and compensates for the position deviation of the first microfilament 109 and the second microfilament 115 in the XOY and YOZ planes of the welding area, until the first microfilament 109 is aligned with the second microfilament 115 within the allowable error range.

[0074] Specifically, welding in the connection area includes the control host 302 controlling the first motor 101 and the laser welding gun Y-direction moving mechanism 117 to move the laser welding gun 106 to directly above the welding area, and welding is performed according to the laser welding process parameters.

[0075] Specifically, the tension detection of the third microfilament 116 includes the control host 302 controlling the second motor 205 to rotate at a set torque to tension the third microfilament 116, detecting whether the tension of the third microfilament 116 is qualified, and displaying the detection result on the control panel 301. After the detection result is displayed, the control host 302 controls the second motor 205 to automatically stop. When the detection result on the control panel 301 displays "Tension detection unqualified", Step 2, Step 3, Step 4 and Step 5 are repeated sequentially until the detection result on the control panel 301 displays "Please remove the microfilament". The laser welding gun 106 automatically returns to the position of the pre-welding adjustment device, and the welding is completed.

[0076] Compared with the prior art, the present invention achieves the following technical effects:

[0077] 1) This invention uses a three-dimensional vision recognition technology consisting of a horizontal camera 105 and a vertical camera 107 to accurately calculate the deviation when two microfilaments are aligned. By adjusting the position of the clamp fixed on the three-dimensional motion platform 111 through the control host 302, the alignment deviation can be compensated, and the two microfilaments can be accurately aligned.

[0078] 2) The present invention uses a control host 302 to control the motor on the gantry bracket and the laser welding gun Y-direction moving mechanism 117 to adjust the position of the laser welding gun 106 on the XOY plane according to the visual positioning joint position information. At the same time, the welding parameters of the laser welding gun 106 are adjusted according to the welding material information, which can improve the welding quality and welding efficiency.

[0079] 3) The tension detection device of this invention adopts a three-wheel tension detection method, which enables automatic detection of whether the tension of the microwire is qualified after welding without removing it from the fixture, thus improving the efficiency of microwire tension detection. This invention has a small size, simple structure, convenient operation, and strong versatility, and is widely applicable to automatic welding and tension detection of different microwire welding materials.

[0080] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A micro-wire laser automatic welding device, characterized in that: Including welding platforms; The welding platform is equipped with a three-dimensional motion platform, a butt joint deviation detection device, a control device, and a laser welding gun; The three-dimensional motion platform is equipped with a first clamp for holding the first microfilament; The first clamp is provided with a second clamp on one side for clamping the second micro wire, and the second clamp is fixed to the welding platform; The docking deviation detection device is arranged on one side of the first fixture and the second fixture respectively, and is used to detect the docking deviation between the first microfilament and the second microfilament and send the docking deviation to the control device. The control device is used to control the three-dimensional motion platform to adjust the posture of the first fixture according to the docking deviation, so as to realize the docking of the first microfilament and the second microfilament; Laser welding guns are used to weld together pre-joined first and second micro-wires. The welding platform is equipped with a tension detection device for detecting the tension of the micro-wire after welding, including a tensioning wheel assembly for tensioning the micro-wire after welding and a tension sensor. The tensioning wheel assembly is located on both sides of the first clamp and the second clamp and is aligned with the arrangement direction of the first clamp and the second clamp. The tension sensor is connected to the tensioning wheel assembly. The tensioning wheel assembly includes a drive wheel, a first follower wheel, a second follower wheel, a third follower wheel, a fourth follower wheel, and a detection wheel. The drive wheel, the first follower wheel, the fourth follower wheel, the detection wheel, the third follower wheel, the first clamp, the second clamp, and the second follower wheel are arranged in sequence and aligned. The height of the second follower wheel and the third follower wheel is greater than the height of the first clamp and the second clamp. The tension sensor is connected to the detection wheel.

2. The microfilament laser automatic welding device according to claim 1, characterized in that: The welding platform is equipped with a welding torch translation device, which is connected to the laser welding torch and is used to drive the laser welding torch to move horizontally above the first and second clamps to adjust the welding position.

3. The microfilament laser automatic welding device according to claim 1, characterized in that: The docking deviation between the first and second microfilaments includes the positional information of the first and second microfilaments on the XOY plane of the welding area and the positional information of the first and second microfilaments on the YOZ plane of the welding area.

4. The microfilament laser automatic welding device according to claim 3, characterized in that: The docking deviation detection device includes a vertical camera and a horizontal camera. The vertical camera is located above the first clamp and the second clamp and is used to detect the position information of the first microwire and the second microwire in the XOY plane of the welding area. The horizontal camera is connected to the welding platform and is used to detect the position information of the first microwire and the second microwire in the YOZ plane of the welding area.

5. The microfilament laser automatic welding device according to claim 1, characterized in that: The drive wheel, the first follower wheel, the fourth follower wheel, the detection wheel, the third follower wheel, the first clamp, the second clamp, and the second follower wheel are all provided with slots for placing microfilaments.

6. A method for automated laser welding of microfilaments, characterized in that: The microfilament laser automatic welding device according to any one of claims 1-5 includes the following steps: The first microfilament and the second microfilament are respectively clamped in the first clamp and the second clamp; The docking deviation detection device is used to detect the docking deviation between the first and second microfilaments and the docking deviation is sent to the control device. The control device controls the three-dimensional motion platform to adjust the posture of the first fixture according to the docking deviation, so as to realize the docking of the first microfilament and the second microfilament; The first and second microfilaments are welded using a laser welding gun; Tension testing of the microfilaments after welding includes the following steps. The drive wheel rotates, causing the welded microwire to be pulled upwards from the first and second clamps after being subjected to tension; Continue rotating the drive wheel to tighten the welded microwire, and use the detection wheel to tension and detect the tension of the welded microwire.

7. The automatic laser welding method for microfilaments according to claim 6, characterized in that: The method for detecting the docking deviation between the first and second microfilaments using a docking deviation detection device is as follows: A vertical camera is used to detect the position information of the first and second microfilaments in the XOY plane of the welding area; a horizontal camera is used to detect the position information of the first and second microfilaments in the YOZ plane of the welding area.

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