A metal workpiece laser welding apparatus

Abstract

This invention belongs to the field of laser welding equipment technology, specifically a laser welding device for metal workpieces. It includes a placement table with a three-axis motion platform. A welding frame is slidably connected to the three-axis motion platform. A welding head is located on the lower surface of the welding frame. A support frame is fixedly connected to the lower surface of the welding frame. A gear is rotatably connected to the surface of the support frame. A moving plate is slidably connected inside the gear. A cleaning frame is slidably connected inside the moving plate. The cleaning frame includes a side cleaning section, and a lower cleaning section is located on one side of the side cleaning section. A cleaning plate is fixedly connected to the lower surface of the gear. During the welding process, the cleaning frame presses down on the workpiece to prevent displacement caused by thermal deformation or vibration, significantly improving welding accuracy and yield.

Description

Technical Field

[0001] This invention belongs to the field of laser welding equipment technology, specifically a laser welding equipment for metal workpieces. Background Technology

[0002] Aluminum alloys possess characteristics such as low density, high strength, good electrical and thermal conductivity, good corrosion resistance, and ease of processing and forming. These properties make aluminum alloys widely used in aerospace, transportation, construction, packaging, electronics, and other fields. During the production process, aluminum alloy workpieces undergo welding treatment as required. By using laser welding equipment, the high energy density of the laser can instantly vaporize the oxide film, avoiding the problem of incomplete fusion defects.

[0003] When using existing aluminum alloy laser welding equipment, welding slag and dust in the air are accompanied by spatter during the welding process. The spatter and dust adhere to the welding head, and the laser energy cannot be concentrated on the workpiece, resulting in insufficient penetration and discontinuous welds, thus reducing the welding effect. At the same time, during the welding process, the workpiece is prone to displacement due to thermal deformation or mechanical vibration caused by the laser heat input, which leads to a decrease in the welding accuracy of the aluminum alloy workpiece.

[0004] Therefore, the present invention provides a laser welding device for metal workpieces. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and address the problems mentioned in the background art, such as spattered welding slag and dust in the air adhering to the welding head, the laser energy cannot be concentrated on the workpiece due to the adhesion of welding slag and dust to the surface of the welding head, resulting in insufficient penetration, discontinuous weld, and thus reduced welding effect.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a metal workpiece laser welding equipment, including a placement table, a three-axis motion platform is provided on the placement table, a welding frame is slidably connected to the three-axis motion platform, a welding head is provided on the lower surface of the welding frame, a support frame is fixedly connected to the lower surface of the welding frame, a gear is rotatably connected to the surface of the support frame, a moving plate is slidably connected inside the gear, a cleaning frame is slidably connected inside the moving plate, the cleaning frame includes a side cleaning part, a lower cleaning part is provided on one side of the side cleaning part, and a cleaning plate is fixedly connected to the lower surface of the gear.

[0007] Preferably, a positioning rod is fixedly connected to the lower surface of the welding frame, and a first movable frame is slidably connected to the surface of the positioning rod. A plurality of toothed blocks are fixedly connected to one side of the first movable frame, and the toothed blocks mesh with gears.

[0008] Preferably, a fixing frame is fixedly connected to one side of the welding frame, and a lead screw is rotatably connected inside the fixing frame.

[0009] Preferably, the surface of the lead screw is threadedly connected to the inside of the first movable frame, a motor is fixedly connected to one side of the fixed frame, and the output end of the motor is fixedly connected to one end of the lead screw.

[0010] Preferably, the upper surface of the first movable frame is fixedly connected with a protruding plate, and the protruding plate is in the shape of a right trapezoid.

[0011] Preferably, a second movable frame is slidably connected inside the support frame, and a pressing rod is fixedly connected to the lower surface of the second movable frame, with one end of the pressing rod abutting against the upper surface of the first movable frame.

[0012] Preferably, an electromagnet is symmetrically fixedly connected to one side of the second movable frame, a slide rod is fixedly connected to the upper surface of the movable plate, and a magnetic block is fixedly connected to one end of the slide rod. When energized, the magnetism of the electromagnet and the magnetism of the magnetic block repel each other.

[0013] Preferably, a connecting rod is fixedly connected to the inner upper surface of the support frame, the connecting rod is slidably connected to the interior of the second movable frame, and a second spring is fixedly connected between the inner wall of the second movable frame and the support frame.

[0014] Preferably, the gear has a limiting groove inside, the inner wall of the limiting groove is slidably connected to the surface of the slide rod, one end of the slide rod is fixedly connected to a slider, and the slider is located below the magnet. A first spring is fixedly connected between one side of the slider and the inner wall of the gear.

[0015] Preferably, the lower surfaces of both cleaning frames are provided with grooves, the two sets of grooves are engaged with each other, and a third spring is fixedly connected between the cleaning frame and the inner wall of the moving plate.

[0016] The beneficial effects of this invention are as follows: 1. The laser welding equipment for metal workpieces of the present invention includes a cleaning plate. Before use, a first moving frame is driven to move, causing a toothed block and a convex plate to slide synchronously. The toothed block meshes with a gear, causing the gear to rotate. The rotation of the gear drives the moving plate to rotate, which in turn drives the cleaning frame to rotate. The cleaning frame cleans the end of the welding head through its lower cleaning section. Simultaneously, the cleaning frame and the cleaning plate rotate synchronously around the side wall of the welding head, thus cleaning the side wall of the welding head. The sliding convex plate presses against the extrusion rod, causing the extrusion rod to drive a second moving frame upward. The second moving frame then drives an electromagnet upward, simultaneously... When the electromagnet is activated, the gear drives the magnetic block to rotate to the electromagnet. The magnetic block is repelled by the electromagnet and moves the moving plate, which in turn moves the cleaning frame. The cleaning frame opens the end of the welding head. When the welding head is in the welding operation, the cleaning frame presses down on the workpiece, which improves the stability of the welding. This device can clean the end and side wall of the welding head from all directions at the same time through the rotation of the cleaning frame, avoiding the problem of welding slag and dust in the air adhering to the welding head, which would reduce the welding effect on aluminum alloy materials. At the same time, during the welding process, the cleaning frame presses down on the workpiece to prevent displacement caused by thermal deformation or vibration, which significantly improves the welding accuracy and yield.

[0017] 2. The laser welding equipment for metal workpieces described in this invention, by providing grooves, allows the gear to rotate and drive the magnetic block to disengage from the repulsive force range of the electromagnet after use. At this time, the first spring drives the slider to reset, the slider drives the moving frame to reset, and the moving frame can drive the cleaning frame to reset. The cleaning frame, through the interlocking of the grooves, can clean the welding slag on the end face of the welding head, preventing the cleaning frame from pushing the welding slag to the center of the welding head and causing it to accumulate, thus affecting the welding effect of the welding head. At the same time, the two cleaning frames seal the end face of the welding head, preventing the problem of external welding slag from re-adhering to the end face of the welding head. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the welding frame of the present invention; Figure 3 This is a bottom view of the welding frame structure of the present invention; Figure 4 This is a schematic diagram of the structure of the first movable frame and the support frame of the present invention; Figure 5 This is a structural cross-sectional view of the first movable frame and support frame of the present invention; Figure 6 This is a schematic diagram of the structure of the gear and support frame of the present invention; Figure 7 This is a schematic diagram of the gear structure of the present invention; Figure 8 This is a schematic diagram of the cleaning plate of the present invention; Figure 9 This is a structural cross-sectional view of the gear of the present invention; In the diagram: 1. Placement platform; 2. Three-axis motion platform; 3. Welding frame; 31. Welding head; 4. Gear; 41. Moving plate; 411. Cleaning frame; 412. Groove; 413. Third spring; 414. Side cleaning section; 415. Lower cleaning section; 42. Slide rod; 43. Slider; 44. Magnetic block; 45. First spring; 46. Limiting groove; 47. Cleaning plate; 5. First moving frame; 51. Tooth block; 52. Protruding plate; 53. Motor; 54. Lead screw; 55. Positioning rod; 56. Fixing frame; 6. Support frame; 61. Second moving frame; 62. Extrusion rod; 63. Second spring; 64. Electromagnet; 65. Connecting rod. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example 1: As Figures 1 to 9 As shown in the figure, a metal workpiece laser welding equipment according to an embodiment of the present invention includes a placement table 1, a three-axis motion platform 2 is provided on the placement table 1, a welding frame 3 is slidably connected to the three-axis motion platform 2, a welding head 31 is provided on the lower surface of the welding frame 3, a support frame 6 is fixedly connected to the lower surface of the welding frame 3, a gear 4 is rotatably connected to the surface of the support frame 6, a moving plate 41 is slidably connected inside the gear 4, a cleaning frame 411 is slidably connected inside the moving plate 41, the cleaning frame 411 includes a side cleaning part 414, a lower cleaning part 415 is provided on one side of the side cleaning part 414, and a cleaning plate 47 is fixedly connected to the lower surface of the gear 4.

[0022] The three-axis motion platform 2 in this device is an existing XYZ high-precision moving platform, also known as a three-coordinate high-precision moving platform. It is a platform that achieves precise movement in the X, Y, and Z directions. The XYZ platform mainly includes an X-axis moving part, a Y-axis moving part, and a Z-axis moving part. The welding head 31 of this device is a laser welding head 31.

[0023] Specifically, when using existing aluminum alloy laser welding equipment, welding slag and dust in the air are accompanied by spatter during the welding of aluminum alloy workpieces. The spatter and dust adhere to the welding head 31. The laser energy cannot be concentrated on the workpiece, resulting in insufficient penetration and discontinuous weld, thus causing a decrease in welding effect. At the same time, during the welding process, the workpiece is prone to displacement due to thermal deformation or mechanical vibration caused by laser heat input, which leads to a decrease in the welding accuracy of aluminum alloy workpieces.

[0024] To avoid the above problems, the device is used as follows: Before using the device, first drive the gear 4 to rotate. The gear 4 rotates the moving plate 41 and the cleaning plate 47 to rotate synchronously. The moving plate 41 drives the cleaning frame 411 to rotate synchronously. Through the cooperation of the side cleaning part 414 of the cleaning frame 411 and the cleaning plate 47, the side wall of the welding head 31 can be cleaned. At the same time, the end of the welding head 31 is cleaned through the lower cleaning part 415. After the gear 4 rotates 180 degrees, it drives the moving plate 41 to move the cleaning frame 411 away from each other, so that the cleaning frame 411 opens the end of the welding head 31. At this time, the welding operation can be prepared. When the device is used to weld aluminum alloy materials, the three-axis motion platform 2 drives the welding frame 3 to move to the area to be welded. Then, the Z-axis moving part of the three-axis motion platform 2 drives the welding frame 3 to descend. The welding frame 3 drives the welding head 31 and the cleaning frame 411 to descend synchronously. The cleaning frame 411 contacts the upper surface of the workpiece and presses down on the aluminum alloy workpiece, so that the aluminum alloy material remains stable during the welding process. Then, the welding head 31 is opened, and welding can be performed in the welding area of ​​the aluminum alloy workpiece.

[0025] This device can simultaneously clean the end and sidewalls of the welding head 31 from all directions through the rotation of the cleaning frame 411, avoiding the problem of welding slag and dust in the air adhering to the welding head 31, which would reduce the welding effect of the welding head 31 on aluminum alloy materials. At the same time, during the welding process, the cleaning frame 411 presses down on the workpiece to prevent displacement caused by thermal deformation or vibration, which significantly improves welding accuracy and yield.

[0026] like Figures 2 to 5 As shown, a positioning rod 55 is fixedly connected to the lower surface of the welding frame 3, and a first movable frame 5 is slidably connected to the surface of the positioning rod 55. Several toothed blocks 51 are fixedly connected to one side of the first movable frame 5, and the toothed blocks 51 mesh with the gear 4. A fixed frame 56 is fixedly connected to one side of the welding frame 3, and a lead screw 54 is rotatably connected inside the fixed frame 56. The surface of the lead screw 54 is threadedly connected to the inside of the first movable frame 5. A motor 53 is fixedly connected to one side of the fixed frame 56, and the output end of the motor 53 is fixedly connected to one end of the lead screw 54.

[0027] Specifically, when it is necessary to drive the gear 4 to rotate, the motor 53 can be turned on. The motor 53 drives the lead screw 54 to rotate, and the lead screw 54 drives the first moving frame 5 to slide on the positioning rod 55. When the first moving frame 5 moves, it drives the tooth block 51 to slide synchronously. The tooth block 51 and the gear 4 mesh with each other, and the gear 4 can then rotate.

[0028] like Figures 4 to 7 As shown, the upper surface of the first movable frame 5 is fixedly connected with a protruding plate 52, the protruding plate 52 being a right trapezoid. A second movable frame 61 is slidably connected inside the support frame 6. A pressing rod 62 is fixedly connected to the lower surface of the second movable frame 61, one end of which is in contact with the upper surface of the first movable frame 5. Electromagnets 64 are symmetrically fixedly connected to one side of the second movable frame 61. A sliding rod 42 is fixedly connected to the upper surface of the movable plate 41, one end of which is fixedly connected to a magnetic block 44. When energized, the magnetism of the electromagnet 64 and the magnetic block 44 repel each other. A connecting rod 65 is fixedly connected to the inner upper surface of the frame 6. The connecting rod 65 is slidably connected to the interior of the second movable frame 61. A second spring 63 is fixedly connected between the inner wall of the second movable frame 61 and the support frame 6. A third spring 413 is fixedly connected between the inner wall of the cleaning frame 411 and the movable plate 41. A limiting groove 46 is provided inside the gear 4. The inner wall of the limiting groove 46 is slidably connected to the surface of the slide rod 42. A slider 43 is fixedly connected to one end of the slide rod 42, and the slider 43 is located below the magnetic block 44. A first spring 45 is fixedly connected between one side of the slider 43 and the inner wall of the gear 4.

[0029] Specifically, under normal conditions, the magnetic block 44 and the electromagnet 64 are misaligned. In this misaligned configuration, energizing the electromagnet 64 does not generate a repulsive force on the magnetic block 44. Simultaneously, when the motor 53 is turned on, the electromagnet 64 is also energized. When the first moving frame 5 slides on the positioning rod 55, it drives the convex plate 52 to slide synchronously. The convex plate 52 contacts the pressing rod 62 and pushes the pressing rod 62 to slide towards the inner upper surface of the support frame 6. The pressing rod 62 drives the second moving frame 61 to slide synchronously. The second moving frame 61 slides on the connecting rod 65 and compresses the second spring 63. Subsequently, the second moving frame 61 drives the electromagnet 64 to move upwards, bringing the electromagnet 64 and the magnetic block 44 to the same height. Then, gear 4... The sliding rod 42 rotates synchronously, which in turn drives the magnetic block 44 and the slider 43 to rotate synchronously. When the magnetic block 44 moves to the electromagnet 64, since the electromagnet 64 and the magnetic block 44 are at the same height, the electromagnet 64 generates a repulsive force on the magnetic block 44. The magnetic block 44 drives the slider 43 to slide in the limiting groove 46. The slider 43 drives the sliding rod 42 to slide synchronously, which in turn drives the moving frame to slide synchronously. The moving frame drives the cleaning frame 411 to slide synchronously, and the cleaning frame 411 disengages from the limiting position of the cleaning plate 47. Subsequently, when the welding head 31 and the cleaning frame 411 descend, the cleaning frame 411 can press down the third spring 413 according to the size of the upper surface of the aluminum alloy workpiece, thereby maintaining the fixing effect on the aluminum alloy workpiece.

[0030] Example 2: Figure 8 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the lower surfaces of the two cleaning racks 411 are provided with grooves 412, and the two sets of grooves 412 are engaged with each other.

[0031] Specifically, after welding head 31 is completed, the first moving frame 5 is driven to reset, causing gear 4 to rotate. Gear 4 drives magnetic block 44 to disengage from the repulsive force range of electromagnet 64. Cleaning frame 411 resets and engages with groove 412, pushing the welding slag on the end face of welding head 31 out through groove 412. At the same time, cleaning frame 411 can seal welding head 31. Subsequently, the side wall of welding head 31 is cleaned by cleaning plate 47 and side cleaning part 414 of cleaning frame 411. Since electromagnet 64 is in the open state, the side wall of welding head 31 is cleaned by cleaning plate 47 and side cleaning part 414 of cleaning frame 411. The side wall of the welding head 31 in area 4 was not cleaned. When the protruding plate 52 returned to its original position with the first moving frame 5, the second spring 63 pushed the second moving frame 61 to its original position. The second moving frame 61 then drove the electromagnet 64 to its original position. When the cleaning plate 47 and the side cleaning part 414 of the cleaning frame 411 cleaned the side wall of the welding head 31, the magnetic block 44 and the electromagnet 64 were misaligned, and the magnet did not generate a repulsive force on the magnetic block 44 when it was energized. Therefore, the cleaning frame 411 did not move. At this time, the area of ​​repulsion of the electromagnet 64 could be cleaned. After cleaning, the equipment could be turned off.

[0032] The cleaning frame 411 of this device interlocks with the groove 412 to clean the welding slag on the end face of the welding head 31, preventing the cleaning frame 411 from pushing the welding slag to the center of the welding head 31 and causing it to accumulate, thus affecting the welding effect of the welding head 31. At the same time, the two cleaning frames 411 seal the cross-section of the welding head 31 to prevent external welding slag from adhering to the end face of the welding head 31 again.

[0033] Working principle: Before using this device, the motor 53 and electromagnet 64 can be turned on. The motor 53 drives the lead screw 54 to rotate, and the lead screw 54 drives the first moving frame 5 to slide on the positioning rod 55. When the first moving frame 5 moves, it drives the tooth block 51 to slide synchronously. The tooth block 51 and the gear 4 mesh with each other, and the gear 4 can rotate. The gear 4 rotates the moving plate 41 and the cleaning plate 47 synchronously. The moving plate 41 drives the cleaning frame 411 to rotate synchronously. Through the cooperation of the side cleaning part 414 of the cleaning frame 411 and the cleaning plate 47, the side wall of the welding head 31 can be cleaned. At the same time, the end of the welding head 31 is cleaned through the lower cleaning part 415. When the first movable frame 5 slides on the positioning rod 55, the first movable frame 5 drives the convex plate 52 to slide synchronously. The convex plate 52 contacts the pressing rod 62 and pushes the pressing rod 62 to slide towards the inner upper surface of the support frame 6. The pressing rod 62 drives the second movable frame 61 to slide synchronously. The second movable frame 61 slides on the connecting rod 65 and compresses the second spring 63. Then, the second movable frame 61 drives the electromagnet 64 to move upward, so that the electromagnet 64 and the magnetic block 44 are at the same height. Then, the gear 4 drives the sliding rod 42 to rotate synchronously. The sliding rod 42 drives the magnetic block 44 and the slider 43 to rotate synchronously. When the magnetic block 44 moves... When the electromagnet 64 is moved to the position, since the electromagnet 64 and the magnetic block 44 are at the same height, the electromagnet 64 generates a repulsive force on the magnetic block 44. The magnetic block 44 drives the slider 43 to slide in the limiting groove 46. The slider 43 drives the sliding rod 42 to slide synchronously. The sliding rod 42 drives the moving frame to slide synchronously. The moving frame drives the cleaning frame 411 to slide synchronously. The cleaning frame 411 is released from the limit of the cleaning plate 47. Then, when the welding head 31 and the cleaning frame 411 descend, the cleaning frame 411 can press down the third spring 413 according to the size of the upper surface of the aluminum alloy workpiece, thereby maintaining the fixing effect on the aluminum alloy workpiece. When the device is needed to perform welding operations on aluminum alloy materials, the three-axis motion platform 2 drives the welding frame 3 to move to the area waiting to be welded. Then, the Z-axis moving part of the three-axis motion platform 2 drives the welding frame 3 to descend. The welding frame 3 drives the welding head 31 and the cleaning frame 411 to descend synchronously. The cleaning frame 411 contacts the upper surface of the workpiece and presses down on the aluminum alloy workpiece to keep the aluminum alloy material stable during the welding process. Then, the welding head 31 is opened, and welding can be performed in the welding area of ​​the aluminum alloy workpiece. After welding of the welding head 31 is completed, the first moving frame 5 is driven to reset, causing the gear 4 to rotate. The gear 4 drives the magnetic block 44 to disengage from the repulsive force range of the electromagnet 64. The cleaning frame 411 resets and engages with the groove 412 through misalignment, which pushes the welding slag on the end face of the welding head 31 out through the groove 412. At the same time, the cleaning frame 411 can seal the welding head 31. Then, the side wall of the welding head 31 is cleaned by the cleaning plate 47 and the side cleaning part 414 of the cleaning frame 411. Since the electromagnet 64 is in the open state, it is in the area of ​​the electromagnet 64. If the side wall of the welding head 31 is not cleaned, when the protruding plate 52 returns to its original position along with the first moving frame 5, the second spring 63 pushes the second moving frame 61 to return to its original position. The second moving frame 61 then drives the electromagnet 64 to return to its original position. When the cleaning plate 47 and the side cleaning part 414 of the cleaning frame 411 clean the side wall of the welding head 31, the magnetic block 44 and the electromagnet 64 are misaligned, and the magnet does not generate a repulsive force on the magnetic block 44 when it is energized. Therefore, the cleaning frame 411 will not move. At this time, the area of ​​repulsion of the electromagnet 64 can be cleaned. After cleaning, the equipment can be turned off.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for metal workpieces, characterized in that: The device includes a placement platform (1), on which a three-axis motion platform (2) is provided. A welding frame (3) is slidably connected to the three-axis motion platform (2). A welding head (31) is provided on the lower surface of the welding frame (3). A support frame (6) is fixedly connected to the lower surface of the welding frame (3). A gear (4) is rotatably connected to the surface of the support frame (6). A moving plate (41) is slidably connected inside the gear (4). A cleaning frame (411) is slidably connected inside the moving plate (41). The cleaning frame (411) includes a side cleaning part (414). A lower cleaning part (415) is provided on one side of the side cleaning part (414). A cleaning plate (47) is fixedly connected to the lower surface of the gear (4).

2. The laser welding equipment for metal workpieces according to claim 1, characterized in that: A positioning rod (55) is fixedly connected to the lower surface of the welding frame (3). A first moving frame (5) is slidably connected to the surface of the positioning rod (55). Several tooth blocks (51) are fixedly connected to one side of the first moving frame (5). All tooth blocks (51) mesh with gears (4).

3. The laser welding equipment for metal workpieces according to claim 2, characterized in that: A fixing frame (56) is fixedly connected to one side of the welding frame (3), and a lead screw (54) is rotatably connected inside the fixing frame (56).

4. The laser welding equipment for metal workpieces according to claim 3, characterized in that: The surface of the lead screw (54) is connected to the internal thread of the first movable frame (5), and a motor (53) is fixedly connected to one side of the fixed frame (56). The output end of the motor (53) is fixedly connected to one end of the lead screw (54).

5. The laser welding equipment for metal workpieces according to claim 4, characterized in that: The upper surface of the first movable frame (5) is fixedly connected with a protruding plate (52), and the protruding plate (52) is a right trapezoid.

6. The laser welding equipment for metal workpieces according to claim 1, characterized in that: The support frame (6) is internally slidably connected to a second movable frame (61), and a pressing rod (62) is fixedly connected to the lower surface of the second movable frame (61). One end of the pressing rod (62) is in contact with the upper surface of the first movable frame (5).

7. The laser welding equipment for metal workpieces according to claim 6, characterized in that: An electromagnet (64) is symmetrically fixedly connected to one side of the second movable frame (61), and a slide rod (42) is fixedly connected to the upper surface of the movable plate (41). A magnetic block (44) is fixedly connected to one end of the slide rod (42). The magnetism of the electromagnet (64) and the magnetism of the magnetic block (44) repel each other after being energized.

8. The laser welding equipment for metal workpieces according to claim 7, characterized in that: A connecting rod (65) is fixedly connected to the inner upper surface of the support frame (6). The connecting rod (65) is slidably connected to the interior of the second movable frame (61). A second spring (63) is fixedly connected between the inner wall of the second movable frame (61) and the support frame (6).

9. The laser welding equipment for metal workpieces according to claim 1, characterized in that: The gear (4) is provided with a limiting groove (46) inside. The inner wall of the limiting groove (46) is slidably connected to the surface of the slide rod (42). One end of the slide rod (42) is fixedly connected to a slider (43), and the slider (43) is located below the magnet (44). A first spring (45) is fixedly connected between one side of the slider (43) and the inner wall of the gear (4).

10. A laser welding device for metal workpieces according to claim 9, characterized in that: The lower surfaces of the two cleaning racks (411) are provided with grooves (412), and the two sets of grooves (412) are engaged with each other. A third spring (413) is fixedly connected between the inner wall of the cleaning rack (411) and the moving plate (41).

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