Automatic metal material laser welding machine based on visual positioning

Abstract

The invention relates to the technical field of laser welding machines, and provides an automatic metal material laser welding machine based on visual positioning, which comprises a workbench, a fixing assembly is arranged at the top of the workbench, two feeding assemblies are further arranged at the top of the workbench, and conveying pieces are arranged on the workbench and between the fixing assembly and the two feeding assemblies. A welding assembly is further arranged at the top of the workbench and located above the fixing assembly. Through cooperation of the electric telescopic rod, the first correcting block and the second correcting block, the position and posture of a welded product are flexibly adjusted, welding operation is facilitated, meanwhile, through linkage of the first gear, the first rack and the second rack, operation accuracy and coordination are enhanced, and the device is suitable for the welded product, shows wide universality and adaptability and is suitable for popularization and application. The device can adapt to metal materials of different shapes and sizes, the operation process is remarkably simplified, the labor intensity of workers is relieved, and the usability and maintainability of the device are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding machines, and more specifically, to an automatic laser welding machine for metal materials based on visual positioning. Background Art

[0002] A laser welding machine is a machine used for laser material processing. According to its working mode, it is divided into laser die welding machines, automatic laser welding machines, laser spot welding machines, and fiber-optic transmission laser welding machines. Laser welding uses high-energy laser pulses to locally heat materials in a small area. The energy of the laser radiation diffuses into the interior of the material through heat conduction, melting the material to form a specific molten pool to achieve the purpose of welding.

[0003] Chinese Patent Authorization Publication No. CN117620434B discloses an automatic laser welding machine, which relates to the technical field of laser welding machines. A positioning mechanism is provided on the positioning table of this patent document. The positioning mechanism includes a first positioning member and a second positioning member. The bottoms of the first positioning member and the second positioning member are both detachably and snap-fitted with the positioning table through a base. The first positioning member includes a fixing plate, a pushing plate, and a first adjusting shaft. The base is vertically arranged below the fixing plate, and one side of the fixing plate is assembled and connected to the pushing plate through the first adjusting shaft. The second positioning member includes a lifting table, a rotating table, and a side clamp. The lifting table is arranged above the base through a lifting mechanism for lifting adjustment. One side below the rotating table is rotatably connected to one side above the lifting table. Through the mutual cooperation and combination of the first positioning member, the second positioning member, and the third positioning member, this invention realizes arbitrary adjustment according to the different heights and different angles of the materials, making the positioning effect better.

[0004] However, although the above invention has made remarkable progress in terms of adjustment flexibility, there are still some limitations in practical applications. Especially when it is necessary to replace the welding product, the staff often need to spend a lot of time re-fixing and adjusting the positioning mechanism, which not only reduces the production efficiency but also increases the operation complexity. In addition, during the welding process, welding of materials with complex shapes has always been a technical difficulty. Since most welding products have unique geometric shapes, traditional laser welding machines often have difficulty achieving precise positioning. Summary of the Invention

[0005] The present invention provides an automatic laser welding machine for metal materials based on visual positioning. By the mutual approach of the limiting rods, it makes an adaptive adjustment according to the size of the welding product, ensuring that the welding product is always in the central position, avoiding position deviation, improving the welding accuracy and stability, and through the cooperation of the inclined surface on the fixing block and the second spring, it can automatically adapt to the height of the welding product and firmly fix it in a predetermined position to solve the problems raised in the background art.

[0006] The technical solution of the present invention is as follows:

[0007] An automatic laser welding machine for metal materials based on visual positioning, comprising: a workbench, a fixing component is arranged on the top of the workbench, two feeding components are also arranged on the top of the workbench, conveying members are arranged between the fixing component and the two feeding components on the workbench, a welding component is further arranged on the top of the workbench, and the welding component is located above the fixing component;

[0008] The fixing component includes a bottom plate fixedly connected to the sides of the two conveying members, a fixing block is slidably connected to the top of the bottom plate, a second spring is fixedly connected between the fixing block and the bottom plate, a first fixing rod is slidably connected to the middle of the second spring at the bottom of the fixing block, the first fixing rod is fixedly connected to the bottom plate, and the first fixing rod can ensure that the fixing block does not shake left and right;

[0009] The feeding component includes a blanking box fixedly connected to the workbench and on one side of the conveying member, a discharge port is opened on one side of the blanking box close to the conveying member, an inclined plate is arranged at the bottom of the blanking box, limiting plates are slidably connected to the inner walls of the opposite sides of the blanking box, racks three are fixedly connected to the tops of the two limiting plates, a second rotating shaft is rotatably connected to one side of the blanking box, a second gear is fixedly connected to one end of the second rotating shaft, the second gear is between the two racks three and meshes with the two racks three.

[0010] Further, the side surface of the fixing block is arc-shaped, a first round groove is opened on one side of the fixing block, there are several first round grooves, a slider is slidably connected in the first round groove, a first spring is fixedly connected between the slider and the bottom of the first round groove, and the end of the slider away from the first round groove is made of rubber material.

[0011] Further, a plurality of first square grooves are opened inside the fixing block, each first square groove communicates the two first round grooves, a fixing shaft is fixedly connected to the side wall of the first square groove, a rotating rod is rotatably connected to the fixing shaft, and second fixing rods are fixedly connected to both ends of the rotating rod.

[0012] Further, a second round groove with the same size as the second fixing rod is opened at one end of the slider, an arc-shaped soft block is arranged in the first round groove, when two adjacent sliders slide synchronously into the first round groove, the second fixing rod can be pushed into the second round groove by extrusion, when only one of the two adjacent sliders slides into the first round groove, the second fixing rod corresponding to the other slider is blocked by the arc-shaped soft block and cannot enter the second round groove.

[0013] Further, a rotating assembly is provided between the conveying member and the fixing assembly. The rotating assembly includes an electric telescopic rod fixedly connected to the workbench. The electric telescopic rod is located on one side of the bottom plate. The top of the electric telescopic rod is slidably connected to a first correction block, and the top of the electric telescopic rod is fixedly connected to a second correction block. The second correction block is on one side of the first correction block and in the middle of the electric telescopic rod.

[0014] Further, the rotating assembly further includes a fixing frame fixedly connected to the conveying member. One end of the fixing frame is fixedly connected to a limiting track. Both ends of the limiting track are slidably connected to limiting rods. One end of each of the two limiting rods close to the limiting track is rotatably connected to a first connecting rod. The end of the first connecting rod away from the limiting rod is rotatably connected to a second connecting rod. The other end of the second connecting rod is rotatably connected to the other first connecting rod. A motor is provided in the middle of the second connecting rod. The output end of the motor is fixedly connected to the second connecting rod.

[0015] Further, a first correction plate is fixedly connected to one side of one of the limiting rods close to the bottom plate. The first correction block is slidably connected to the first correction plate;

[0016] A second correction plate is fixedly connected to one side of the other limiting rod close to the bottom plate. The second correction plate is L-shaped. A first rack is slidably connected to the middle of the short side of the second correction plate. A second rack is slidably connected to one side of the long side of the second correction plate. The bottom of the second rack is slidably connected to the top of the electric telescopic rod. A first gear is meshed between the second rack and the first rack. The first gear is rotatably connected to the second correction plate.

[0017] Further, through slots are provided in the middle of the two limiting plates. A first rotating shaft is rotatably connected to the top and bottom of the through slot. A locking motor is fixedly connected to the bottom of the through slot. The output end of the locking motor is fixedly connected to one end of the first rotating shaft. The two first rotating shafts are connected by a chain drive. A square slot two is provided in the chain. A dividing plate is slidably connected in the square slot two. A third spring is fixedly connected between the square slot two and the dividing plate. A magnet is provided on one side of the dividing plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention realizes the adaptive adjustment of the limit plate by driving the cooperation of the second gear and the third rack through rotating the rotating shaft, can quickly and accurately position according to the size of the welded product, simplifies the cumbersome process of the traditional manual adjustment positioning mechanism, and also improves the accuracy and stability of positioning. When the width of the welded product exceeds the distance between the dividing plates, the dividing plates can flexibly move down and slide, and adjust the position through the chain belt to ensure that the welded products are neatly sorted in the blanking box. The locking motor controls the rotation of the rotating shaft to accurately regulate the time when the welded product falls to the bottom of the blanking box, improving the blanking efficiency and accuracy. The design of the bottom inclined plate enables the welded product to smoothly slide towards the conveying part, simplifying the conveying process. This device improves the flexibility and automation level of the blanking of welded products, ensuring production efficiency and product quality.

[0020] 2. The present invention makes the limit rods approach each other, performs adaptive adjustment according to the size of the welded product, ensures that the welded product is always in the central position, avoids position deviation, improves the welding precision and stability, and through the cooperation of the inclined surface on the fixed block and the second spring, can automatically adapt to the height of the welded product and firmly fix it in the predetermined position.

[0021] 3. The present invention flexibly adjusts the position and posture of the welded product through the cooperation of the electric telescopic rod, the first correcting block and the second correcting block, realizes automatic flipping and straightening, ensures that the welded product is stable and in a right-angled shape, facilitating the welding operation. At the same time, the linkage of the first gear, the first rack and the second rack is used to enhance the accuracy and coordination of the operation. This device is not only applicable to welded products, but also shows extensive versatility and adaptability, can cope with metal materials of different shapes and sizes, significantly simplifies the operation process, reduces the labor intensity of the staff, and improves the usability and maintainability of the equipment. Brief Description of the Drawings

[0022] Figure 1 is the three-dimensional view of the device of the present invention;

[0023] Figure 2 is the internal structure diagram of the device of the present invention;

[0024] Figure 3 is the structure diagram of the electric telescopic rod of the device of the present invention;

[0025] Figure 4 is the structure diagram of the fixed block of the device of the present invention;

[0026] Figure 5 is the present invention Figure 1 enlarged view at A in;

[0027] Figure 6 is the present invention Figure 1 enlarged view at B in;

[0028] Figure 7 is the present inventionFigure 2 Enlarged view at position C in the figure;

[0029] Figure 8 It is of the present invention Figure 2 Enlarged view at position D in the figure;

[0030] Figure 9 It is of the present invention Figure 4 Enlarged view at position E in the figure.

[0031] In the figure:

[0032] 1. Workbench; 2. Welding assembly; 3. Conveyor; 4. Fixing assembly; 41. Bottom plate; 42. Fixing block; 421. First circular groove; 422. Slide block; 4221. Second circular groove; 4222. Arc-shaped soft block; 423. First spring; 43. Second spring; 44. First fixing rod; 441. First square groove; 442. Fixed shaft; 443. Rotating rod; 444. Second fixing rod; 5. Rotating assembly; 51. Electric telescopic rod; 52. First correcting block; 53. Second correcting block; 531. Fixing frame; 532. Limiting track; 533. Limiting rod; 5331. First correcting plate; 5332. Second correcting plate; 5333. First rack; 5334. Second rack; 5335. First gear; 534. First connecting rod; 535. Second connecting rod; 6. Loading assembly; 61. Loading box; 611. Discharge port; 612. Inclined plate; 62. Limiting plate; 621. Through groove; 622. First rotating shaft; 623. Chain belt; 624. Dividing plate; 625. Second square groove; 626. Third spring; 63. Third rack; 64. Second rotating shaft; 65. Second gear. Specific embodiments

[0033] The following further describes in detail the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0034] As Figures 1-9 shown, the present invention provides an automatic laser welding machine for metal materials based on visual positioning, including: a workbench 1, a fixing assembly 4 is arranged on the top of the workbench 1, two loading assemblies 6 are further arranged on the top of the workbench 1, a conveyor 3 is arranged between the fixing assembly 4 and the two loading assemblies 6 on the workbench 1. The welding product is placed on the conveyor belt of the conveyor 3, and by starting the conveyor 3, the conveyor belt is driven to drive the welding product to move towards the bottom plate 41. A welding assembly 2 is further arranged on the top of the workbench 1, and a monitoring system is arranged on the welding assembly 2. When the two welding products come into contact, the place where the welding product needs to be welded is monitored through the monitoring system, and the welding head on the welding assembly 2 is started to weld the welding product, and the welding assembly 2 is located above the fixing assembly 4;

[0035] The fixing component 4 includes a bottom plate 41 fixedly connected to the sides of the two conveying members 3. A fixing block 42 is slidably connected to the top of the bottom plate 41. A second spring 43 is fixedly connected between the fixing block 42 and the bottom plate 41. A first fixing rod 44 is slidably connected to the middle of the second spring 43 at the bottom of the fixing block 42. The first fixing rod 44 is fixedly connected to the bottom plate 41, and the first fixing rod 44 can ensure that the fixing block 42 does not sway left and right.

[0036] The feeding component 6 includes a blanking box 61 fixedly connected to the workbench 1 and on one side of the conveying member 3. A discharge port 611 is provided on the side of the blanking box 61 close to the conveying member 3. An inclined plate 612 is provided at the bottom of the blanking box 61. Limiting plates 62 are slidably connected to the inner walls of the two opposite sides of the blanking box 61. A third rack 63 is fixedly connected to the top of each of the two limiting plates 62. A second rotating shaft 64 is rotatably connected to one side of the blanking box 61. A second gear 65 is fixedly connected to one end of the second rotating shaft 64. The second gear 65 is between the two third racks 63 and meshes with the two third racks 63.

[0037] As a technical solution of the present invention, the side surface of the fixing block 42 is arc-shaped. A first circular groove 421 is provided on one side of the fixing block 42. A plurality of the first circular grooves 421 are provided. A slider 422 is slidably connected in the first circular groove 421. A first spring 423 is fixedly connected between the slider 422 and the bottom of the first circular groove 421. One end of the slider 422 away from the first circular groove 421 is made of rubber, increasing the friction force on the welded product, so that the welded product is more stable.

[0038] As a technical solution of the present invention, a plurality of first square grooves 441 are provided inside the fixing block 42. Each of the first square grooves 441 communicates the two first circular grooves 421. A fixing shaft 442 is fixedly connected to the side wall of the first square groove 441. A rotating rod 443 is rotatably connected to the fixing shaft 442. Second fixing rods 444 are fixedly connected to both ends of the rotating rod 443. A distance is left between the second fixing rods 444 and the bottom of the slider 422.

[0039] As a technical solution of the present invention, a second circular groove 4221 having the same size as the second fixing rod 444 is provided at one end of the slider 422. An arc-shaped soft block 4222 is provided in the first circular groove 421. When two adjacent sliders 422 slide synchronously into the first circular groove 421, the second fixing rod 444 can be forced to enter the second circular groove 4221 by extrusion. When only one of the two adjacent sliders 422 slides into the first circular groove 421, the second fixing rod 444 corresponding to the other slider 422 is blocked by the arc-shaped soft block 4222 and cannot enter the second circular groove 4221.

[0040] As a technical solution of the present invention, a rotating assembly 5 is provided between the conveying member 3 and the fixing assembly 4. The rotating assembly 5 includes an electric telescopic rod 51 fixedly connected to the workbench 1. The electric telescopic rod 51 is located on one side of the bottom plate 41. A first correcting block 52 is slidably connected to the top of the electric telescopic rod 51. A second correcting block 53 is fixedly connected to the top of the electric telescopic rod 51. The second correcting block 53 is on one side of the first correcting block 52 and in the middle of the electric telescopic rod 51.

[0041] As a technical solution of the present invention, the rotating assembly 5 further includes a fixing frame 531 fixedly connected to the conveying member 3. One end of the fixing frame 531 is fixedly connected with a limiting track 532. Both ends of the limiting track 532 are slidably connected with limiting rods 533. One end of each of the two limiting rods 533 close to the limiting track 532 is rotatably connected with a first connecting rod 534. The other end of the first connecting rod 534 away from the limiting rod 533 is rotatably connected with a second connecting rod 535. The other end of the second connecting rod 535 is rotatably connected with the other first connecting rod 534. A motor is arranged in the middle of the second connecting rod 535. The output end of the motor is fixedly connected with the second connecting rod 535.

[0042] As a technical solution of the present invention, a first correcting plate 5331 is fixedly connected to one side of the limiting rod 533 close to the bottom plate 41. The first correcting block 52 is slidably connected with the first correcting plate 5331;

[0043] A second correcting plate 5332 is fixedly connected to one side of the other limiting rod 533 close to the bottom plate 41. The second correcting plate 5332 is L-shaped. A first rack 5333 is slidably connected to the middle of the short side of the second correcting plate 5332. A second rack 5334 is slidably connected to one side of the long side of the second correcting plate 5332. The bottom of the second rack 5334 is slidably connected to the top of the electric telescopic rod 51. A first gear 5335 is meshed between the second rack 5334 and the first rack 5333. The first gear 5335 is rotatably connected to the second correcting plate 5332.

[0044] As a technical solution of the present invention, through holes 621 are formed in the middle of the two limiting plates 62. A first rotating shaft 622 is rotatably connected to the top and bottom of the through hole 621. A locking motor is fixedly connected to the bottom of the through hole 621. The output end of the locking motor is fixedly connected to one end of the first rotating shaft 622. The two first rotating shafts 622 are connected by a chain belt 623. A second square groove 625 is formed in the chain belt 623. A dividing plate 624 is slidably connected to the second square groove 625. A third spring 626 is fixedly connected between the second square groove 625 and the dividing plate 624. A magnet is arranged on one side of the dividing plate 624.

[0045] Working principle:

[0046] As Figure 2 and Figures 6-7 shown, first, the staff rotates the second rotating shaft 64 according to the size of the welded product to drive the second gear 65 to rotate. The second gear 65 drives the two third racks 63 to approach each other. The third racks 63 drive the limiting plates 62 to approach each other to adapt to the width of the welded product. Then, the welded product is adjusted to the appropriate angle and put into the blanking box 61. When the welded product falls, its bottom contacts the dividing plate 624. The magnet on the dividing plate 624 is magnetically connected to the welded product, thus ensuring the stability of the welded product on the dividing plate 624. If the width of one side of the welded product is greater than the distance between the two dividing plates 624, the dividing plate 624 in contact with the welded product moves downward under gravity, and the other dividing plates 624 rotate from the other side of the chain belt 623 to this side. The dividing plate 624 is pushed by the side of the welded product and slides into the second square groove 625, compressing the third spring 626. The locking motor is started to control the rotation of the first rotating shaft 622, driving the chain belt 623 to move on the two first rotating shafts 622, thereby controlling when the welded product falls to the bottom of the blanking box 61. Since an inclined plate 612 is arranged at the bottom of the blanking box 61, the welded product slides directly onto the conveyor 3 through the inclined plate 612.

[0047] As Figures 2-5 and Figures 8-9As shown, the welded product is conveyed between the two limiting rods 533 through the conveyor 3. The motor is started to drive the second connecting rod 535 to rotate. The second connecting rod 535 drives the first connecting rod 534 to rotate. The first connecting rod 534 drives the limiting rod 533 to slide on the limiting track 532, so that the two limiting rods 533 approach each other, and drives the first correcting plate 5331 and the second correcting plate 5332 to move synchronously. Since the approaching distances of the two limiting rods 533 are equal, if the position of the welded product is offset at this time, one of the limiting rods 533 can push the welded product to the center position of the conveyor 3. As the conveyor 3 continuously brings the welded products on both sides closer to each other until they contact the fixed block 42, they slide above the fixed block 42 along the arc surface on the fixed block 42, and press the fixed block 42 in contact with the welded product downward by gravity, compress the second spring 43 and the first fixing rod 44 slides into the fixed block 42. At this time, the slider 422 on one side of the fixed block 42 not in contact with the welded product contacts the welded product. If the adjacent two sliders 422 are both in contact with the welded product, the welded product pushes the slider 422 to slide into the first circular groove 421, compresses the second spring 43, so that the adjacent two second fixing rods 444 pass through and squeeze the arc-shaped soft block 4222 and enter the second circular groove 4221, and then the slider 422 completely enters the first circular groove 421. If only one of the two sliders 422 in the two first circular grooves 421 connected to the same first square groove 441 is in contact with the welded product, when the slider 422 moves in the direction of the second fixing rod 444, the second fixing rod 444 at this position drives the rotating rod 443 to rotate, and then drives the second fixing rod 444 at the other end to move in the opposite direction, and pushes the other slider 422 to extend out of the first circular groove 421 and stretch the second spring 43. The rubber head at the end of the slider 422 contacts the welded product and fixes the welded product, so that the welded product can always remain stable during the welding process. The staff of this device only need to simply operate to adjust the distance between the two limiting rods 533 according to the size of the welded product, saving the time of re-fixing and adjustment, and significantly improving the production efficiency.

[0048] As Figures 1-3 and Figure 5As shown, after the welding of the welding product on this surface is completed, at this time, the welding product is between the correction plate 1 5331 and the correction plate 2 5332. Since the correction block 1 52 is slidably connected to the correction plate 1 5331, at this time, the correction block 1 52 is on the bottom side of the welding product. The staff activates the electric telescopic rod 51, and the electric telescopic rod 51 drives the correction block 1 52 and the correction block 2 53 to move upward. The correction block 1 52 slides within the correction plate 1 5331 and pushes the side of the welding product, causing the welding product to flip. At the same time, the top of the correction block 2 53 is flush with the conveyor belt on the conveyor 3. At the same time, the electric telescopic rod 51 drives the rack 3 63 to move upward, the rack 3 63 drives the gear 2 65 to rotate, the gear 2 65 drives the rack 2 5334 to move, and the rack 2 5334 moves in the opposite direction to the rack 3 63. The rack 3 63 passes through the short side of the L-shaped correction plate 2 5332 and pushes the top of the welding product, causing the welding product to be straightened. At this time, the welding product is in a right-angled shape. Then, the electric telescopic rod 51 is activated again, so that the correction block 2 53 pushes the welding product, and thus one end of the welding product at this end is lifted. Due to the gravity factor, the welding product rotates counterclockwise by about 30°. Since the welding product at this end is between the correction plate 1 5331 and the correction plate 2 5332, the welding product at this end will not sway left and right, which is convenient for the welding assembly 2 to weld the welding product on this surface. This device is not only applicable to welding products, but can also be widely applied to metal materials of other shapes and sizes, enhancing the versatility and adaptability of the equipment, simplifying the operation process, reducing the labor intensity of the staff, and making the equipment easier to operate and maintain.

[0049] The embodiments of the present invention are given for the purposes of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An automatic laser welding machine for metal materials based on visual positioning, comprising: A workbench (1), characterized in that: a fixing component (4) is arranged on the top of the workbench (1), two feeding components (6) are also arranged on the top of the workbench (1), a conveying member (3) is arranged between the fixing component (4) and the two feeding components (6), and a welding component (2) is also arranged on the top of the workbench (1), and the welding component (2) is located above the fixing component (4); The fixing assembly (4) comprises a bottom plate (41) fixedly connected to the sides of the two conveying members (3); a fixing block (42) is slidably connected to the top of the bottom plate (41); a second spring (43) is fixedly connected between the fixing block (42) and the bottom plate (41); a fixing rod (44) is slidably connected to the bottom of the fixing block (42) in the middle of the second spring (43); and the fixing rod (44) is fixedly connected to the bottom plate (41); The loading assembly (6) comprises a material discharge box (61) fixedly connected to the workbench (1) and on one side of the conveying member (3); a discharge port (611) is provided on a side of the material discharge box (61) close to the conveying member (3); an inclined plate (612) is provided at the bottom of the material discharge box (61); limiting plates (62) are slidably connected to the inner walls on both sides of the opposite sides of the material discharge box (61); the tops of the two limiting plates (62) are fixedly connected to racks three (63); one side of the material discharge box (61) is rotatably connected to a rotating shaft two (64); one end of the rotating shaft two (64) is fixedly connected to a gear two (65); the gear two (65) is between the two racks three (63) and meshes with the two racks three (63).

2. The automatic laser welding machine for metal materials based on visual positioning as claimed in claim 1, characterized in that: The side surface of the fixing block (42) is arc-shaped. A circular groove (421) is provided on one side of the fixing block (42). The circular groove (421) is provided with a plurality of sliders (422) slidably connected in the circular groove (421). A spring (423) is fixedly connected between the slider (422) and the bottom of the circular groove (421). The end of the slider (422) away from the circular groove (421) is made of rubber.

3. The automatic laser welding machine for metal materials based on visual positioning as claimed in claim 2, characterized in that: A plurality of square grooves (441) are provided inside the fixed block (42), each of the square grooves (441) connecting two circular grooves (421), a fixed shaft (442) is fixedly connected to the side wall of the square groove (441), a rotating rod (443) is rotatably connected to the fixed shaft (442), and two ends of the rotating rod (443) are fixedly connected to fixed rods (444).

4. The automatic laser welding machine for metal materials based on visual positioning as claimed in claim 3, characterized in that: A second circular groove (4221) having the same size as the second fixing rod (444) is formed at one end of the sliding block (422), and an arc-shaped soft block (4222) is arranged in the first circular groove (421).

5. The automatic laser welding machine for metal materials based on visual positioning as claimed in claim 1, characterized in that: A rotating assembly (5) is provided between the conveying member (3) and the fixing assembly (4), the rotating assembly (5) comprising an electric telescopic rod (51) fixedly connected to the workbench (1), the electric telescopic rod (51) being located on one side of the bottom plate (41), a first correction block (52) being slidably connected to the top of the electric telescopic rod (51), a second correction block (53) being fixedly connected to the top of the electric telescopic rod (51), the second correction block (53) being located on one side of the first correction block (52) and in the middle of the electric telescopic rod (51).

6. The automatic laser welding machine for metal materials based on visual positioning as claimed in claim 5, characterized in that: The rotating assembly (5) further comprises a fixed frame (531) fixedly connected to the transmission member (3), one end of the fixed frame (531) being fixedly connected to a limiting track (532), both ends of the limiting track (532) being slidably connected to limiting rods (533), one end of the two limiting rods (533) close to the limiting track (532) being rotatably connected to a first connecting rod (534), one end of the connecting rod (534) away from the limiting rod (533) being rotatably connected to a second connecting rod (535), the other end of the second connecting rod (535) being rotatably connected to another first connecting rod (534), a motor being arranged in the middle of the second connecting rod (535), and an output end of the motor being fixedly connected to the second connecting rod (535).

7. The automatic laser welding machine for metal materials based on visual positioning as claimed in claim 6, characterized in that: A correction plate 1 (5331) is fixedly connected to one side of one of the limit rods (533) close to the bottom plate (41), and the correction block 1 (52) is slidably connected to the correction plate 1 (5331); Another limiting rod (533) is fixedly connected to a correction plate 2 (5332) on one side close to the bottom plate (41); the correction plate 2 (5332) is L-shaped; a rack 1 (5333) is slidably connected to the middle of the short side of the correction plate 2 (5332); a rack 2 (5334) is slidably connected to one side of the long side of the correction plate 2 (5332); the bottom of the rack 2 (5334) is slidably connected to the top of the electric telescopic rod (51); a gear 1 (5335) is meshedly connected between the rack 2 (5334) and the rack 1 (5333); the gear 1 (5335) is rotatably connected to the correction plate 2 (5332).

8. The automatic laser welding machine for metal materials based on visual positioning as claimed in claim 1, characterized in that: A through slot (621) is provided in the middle of the two limit plates (62), the top and bottom of the through slot (621) are rotatably connected to a rotating shaft (622), the bottom of the through slot (621) is fixedly connected to a locking motor, the output end of the locking motor is fixedly connected to one end of the rotating shaft (622), the two rotating shafts (622) are connected by a chain belt (623), a square slot (625) is provided on the chain belt (623), a dividing plate (624) is slidably connected in the square slot (625), a spring (626) is fixedly connected between the square slot (625) and the dividing plate (624), and a magnet is provided on one side of the dividing plate (624).

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