Laser-electric arc hybrid welding device and working method thereof

Abstract

The invention belongs to the technical field of welding devices, and discloses a laser-arc hybrid welding device and a working method thereof.The laser-arc hybrid welding device comprises a rack, an arc-shaped guide rail is fixedly installed on the front face, close to the top end, of the rack, a gas storage assembly fixedly sleeves the position, close to the bottom end, of the rack, and a base is fixedly installed at the bottom end of the rack; and a workbench located below the arc-shaped guide rail is fixedly installed at the position, close to the front face of the bottom end, of the rack, an adjusting assembly is fixedly installed at the top end of the air storage assembly, and an extension frame is fixedly installed at the front end of the adjusting assembly. By means of the matching process of the gas storage assembly and the adjusting assembly when the angle of the device is adjusted, the height of the baffle can be automatically adjusted while the angle of the device can be adjusted, the protection height is made to be matched with the welding angle, the problem that a traditional device cannot provide good protection at different welding angles is solved, and the welding efficiency is improved. And the protection effect is obviously improved.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, specifically a laser-arc hybrid welding device and its working method. Background Technology

[0002] Laser-arc hybrid welding is a welding method that utilizes both laser and electric arc as dual heat sources, acting simultaneously on the same molten pool. The laser beam can be focused onto a very small area, producing narrow and deep welds, characterized by a narrow heat-affected zone and high welding speed. Meanwhile, electric arc welding possesses excellent gap bridging capabilities and high electrical efficiency, effectively welding materials with high reflectivity. By combining the advantages of these two welding technologies, laser-arc hybrid welding can achieve high-speed, high-quality, and high-precision welding.

[0003] When performing laser-arc hybrid welding, a hybrid welding device is used. Currently used hybrid welding devices mainly consist of two welding heads: a laser welding head and an arc welding head. During welding, the two welding heads are at a specific angle and apply the welding point to the same position. In actual use, the angle of the welding heads is fixed, resulting in a fixed welding angle. This requires frequent adjustments to the workpiece position during actual welding. Although some welding heads have angle adjustment functions, it is still necessary to adjust both welding heads separately, resulting in low overall welding efficiency.

[0004] Meanwhile, during the welding process, in order to prevent welding debris from injuring people, the device is equipped with baffles to assist in the welding. However, when the welding angle is adjusted, the angle at which the welding debris is sprayed from the welding end is also different. The traditional baffles are fixed in position and cannot adapt to the protection requirements under different welding angles. Summary of the Invention

[0005] The purpose of this invention is to provide a laser-arc hybrid welding device and its operating method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a laser-arc hybrid welding device, comprising a frame, an arc-shaped guide rail fixedly mounted on the front of the frame near the top, a gas storage component fixedly sleeved on the frame near the bottom, a base fixedly mounted on the bottom of the frame, a worktable fixedly mounted on the front of the frame near the bottom, located below the arc-shaped guide rail, an adjustment component fixedly mounted on the top of the gas storage component, an extension frame fixedly mounted on the front end of the adjustment component, a baffle fixedly mounted on the front end of the extension frame, guide wheels symmetrically and movably mounted inside the arc-shaped guide rail, a linkage component mounted on the top of the adjustment component, the front end of the linkage component connected to the two guide wheels, a laser welding head fixedly mounted on the front of the left guide wheel, an arc welding head fixedly mounted on the front of the right guide wheel, and the angles between the laser welding head and the arc welding head and the worktable being exactly the same.

[0007] When welding a workpiece, the workpiece can be placed on top of the worktable, and the bottom of the gas storage component can be connected to an external air pump. At the same time, the welding points of the laser welding head and the arc welding head should be aligned with the corresponding welding positions on the workpiece, and the laser welding head and the arc welding head should be turned on simultaneously to weld the corresponding positions on the workpiece to complete the initial welding process.

[0008] As a further technical solution of the present invention, the gas storage assembly includes a gas storage pipe, the outer side of the gas storage pipe is fixedly sleeved with the inside of the frame, and a three-way valve is fixedly connected to the bottom end of the gas storage pipe, and the bottom end of the three-way valve is connected to an external air pump.

[0009] As a further technical solution of the present invention, the front of the three-way valve is fixedly connected to an air jet pipe, the front of the baffle is provided with a through groove, and the output end of the air jet pipe passes through the through groove and is located on the front of the workbench.

[0010] During welding, an external air pump can be turned on to output high-pressure air into the three-way valve. At this time, the valve at the front end of the three-way valve needs to be opened, and the high-pressure air can be discharged through the jet pipe and directly act on the workpiece on the worktable to cool down the welding position and remove debris, reduce the interference of welding debris to the surrounding environment, and reduce welding heat.

[0011] By directly utilizing externally input high-pressure air—that is, by introducing high-pressure air into the interior of a three-way valve and directly exporting it through the front end of the jet pipe—the flow of high-pressure air is used to directly assist in the welding process, reducing welding temperature and metal debris. The entire process is completed automatically, effectively avoiding the impact of welding debris on the welding and improving welding quality.

[0012] As a further technical solution of the present invention, a piston plate is movably sleeved inside the gas storage tube, and a piston rod located inside the gas storage tube is fixedly connected to the top of the piston plate. The top of the piston rod passes through the top of the gas storage tube and is connected to the adjustment component. A return spring is movably sleeved on the outer side of the piston rod, and the upper and lower ends of the return spring are respectively connected to the top of the inner cavity of the gas storage tube and the top of the piston plate.

[0013] When the welding angle needs to be adjusted, the valve at the top of the three-way valve can be opened, allowing high-pressure air to enter the air storage pipe. This applies pressure to the piston plate, causing it to rise and lift the piston rod. The return spring is then compressed. When the air in the air storage pipe is expelled, the return spring automatically resets, causing the piston plate and piston rod to move downwards.

[0014] As a further technical solution of the present invention, the adjustment component includes a movable plate, the front of which is connected to the extension frame, and the bottom end of which is connected to the top end of the piston rod.

[0015] As a further technical solution of the present invention, a first fixed seat is fixedly installed on both the left and right sides of the top of the movable plate. The end of the first fixed seat away from the movable plate is movably connected to a connecting rod through a rotating shaft. The end of the connecting rod away from the first fixed seat is movably connected to a second fixed seat through a rotating shaft. The other end of the second fixed seat is connected to the linkage component.

[0016] When the piston rod moves upward, the movable plate moves upward as well, and drives the first fixed seat to move upward. At this time, the two connecting rods deflect, that is, they deflect away from the center. The included angle between the two connecting rods increases, and a force is applied to the two second fixed seats, causing the two second fixed seats to move away from each other. When the movable plate moves up and down, it can simultaneously drive the extension frame and the baffle to move up and down. At this time, the baffle can move up and down relative to the worktable. When the angle adjustment is completed, the corresponding height of the baffle can be adjusted simultaneously, that is, different heights of protection are provided for different welding angles, and the adaptive adjustment process is completed.

[0017] By utilizing the coordination between the gas storage component and the adjustment component during device angle adjustment, the device can automatically adjust the baffle height while adjusting the angle, ensuring that the protection height matches the welding angle. This avoids the problem of traditional devices failing to provide adequate protection at different welding angles, significantly improving the protection effect.

[0018] As a further technical solution of the present invention, the linkage component includes two staggered hinge rods, the front of the two hinge rods and near the top of the two hinge rods are respectively connected to two guide wheels, and a hinge shaft is movably connected at the staggered position of the two hinge rods, and the two hinge rods are hinged to each other through the hinge shaft.

[0019] As a further technical solution of the present invention, the two hinge rods are fixedly connected at their relatively close ends to the second fixed seats, and the two second fixed seats are symmetrically installed on the inner side of the hinge rods.

[0020] When the second fixed seats move away from each other, the two hinge rods are subjected to a thrust, that is, with the hinge axis as the center, the two hinge rods rotate relative to each other. At this time, the included angle between the two hinge rods increases, and the two guide wheels can rotate relative to the arc guide rail and move away from each other, thus driving the laser welding head and the arc welding head to move away from each other, and synchronously completing the angle adjustment. When the two second fixed seats move closer to each other, they can drive the laser welding head and the arc welding head to move closer to each other, thus completing the synchronous adjustment.

[0021] By utilizing the coordinated action of the gas storage component, adjustment component, and linkage component, the angle adjustment only requires controlling the amount of gas entering the gas storage pipe, which can quickly achieve synchronous adjustment of the laser welding head and the arc welding head. The entire adjustment process is completed synchronously, and the welding points of the laser welding head and the arc welding head can always be kept in the same position throughout the adjustment process, meeting different welding requirements and improving the overall welding efficiency.

[0022] A method for operating a laser-arc hybrid welding device includes the following steps: S1: When welding a workpiece, the workpiece can be placed on top of the worktable, and the bottom of the three-way valve can be connected to the external air pump. At the same time, it is necessary to ensure that the welding points corresponding to the laser welding head and the arc welding head are located on the corresponding welding points of the workpiece, and simultaneously turn on the laser welding head and the arc welding head to weld the workpiece. S2: During welding, turn on the external air pump to input high-pressure air into the three-way valve. At this time, the high-pressure air can be discharged through the jet pipe and act on the workpiece to complete the cooling and debris removal. S3: When it is necessary to adjust the welding angle, the valve at the top of the three-way valve can be opened, and air will enter the interior of the air storage pipe and drive the piston plate and piston rod to rise. At this time, the return spring will be compressed and drive the movable plate to rise. The movable plate can then drive the through groove to rise synchronously, thus completing the adaptive adjustment of the through groove height. S4: At this time, the two connecting rods deflect in a direction away from each other and apply a thrust to the two hinged rods at the top. The two hinged rods then rotate relative to each other, and the included angle increases. This drives the two guide wheels to move away from each other synchronously, ultimately causing the laser welding head and the arc welding head to move away from each other, completing the synchronous adjustment. At this time, the corresponding welding angle is adjusted accordingly.

[0023] The beneficial effects of this invention are as follows: (1) By utilizing the coordination process of the gas storage component and the adjustment component when the device angle is adjusted, the device can automatically adjust the height of the baffle while adjusting the angle, so that the height of the protection is adapted to the welding angle, avoiding the problem that traditional devices cannot provide good protection under different welding angles, and significantly improving the protection effect.

[0024] (2) By utilizing the cooperation between the gas storage component, the adjustment component, and the linkage component, the present invention can quickly achieve synchronous adjustment of the laser welding head and the arc welding head by controlling only the amount of gas entering the gas storage tube when adjusting the angle. The entire adjustment process is completed synchronously, and the welding point of the laser welding head and the arc welding head can always be kept in the same position during the entire adjustment process, so as to meet different welding requirements and improve the overall welding efficiency.

[0025] (3) This invention utilizes externally input high-pressure air directly, that is, the high-pressure air is introduced into the interior of the three-way valve and directly discharged through the front end of the jet pipe. The high-pressure air is used to directly assist the welding process by utilizing its fluidity, thereby reducing the welding temperature and metal debris. The whole process is completed automatically, which can effectively avoid the influence of welding debris on the welding and improve the welding quality. Attached Figure Description

[0026] Figure 1 This is a front view of the overall structure of the present invention; Figure 2 This is a rear view of the overall structure of the present invention; Figure 3 This is an exploded view of the workbench and baffle structure of the present invention; Figure 4 This is a schematic diagram showing the cooperation between the regulating component and the gas storage component of the present invention; Figure 5 This is a cross-sectional schematic diagram of the internal structure of the gas storage component of the present invention; Figure 6 This is an exploded view of the arc-shaped guide rail and guide wheel structure of the present invention; Figure 7 This is a schematic diagram showing the cooperation between the guide wheel and the linkage component structure of the present invention.

[0027] In the diagram: 1. Frame; 2. Workbench; 3. Base; 4. Baffle; 5. Through slot; 6. Extension frame; 7. Adjustment assembly; 701. Movable plate; 702. First fixed seat; 703. Second fixed seat; 704. Connecting rod; 8. Arc guide rail; 9. Gas storage assembly; 901. Gas storage pipe; 902. Piston plate; 903. Return spring; 904. Three-way valve; 905. Jet pipe; 906. Piston rod; 10. Guide wheel; 11. Laser welding head; 12. Arc welding head; 13. Linkage assembly; 131. Hinge rod; 132. Hinge shaft. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1 to 7 As shown in the embodiment of the present invention, a laser-arc hybrid welding device includes a frame 1. An arc-shaped guide rail 8 is fixedly installed on the front of the frame 1 near the top. A gas storage component 9 is fixedly sleeved on the frame 1 near the bottom. A base 3 is fixedly installed on the bottom of the frame 1. A worktable 2 located below the arc-shaped guide rail 8 is fixedly installed on the front of the frame 1 near the bottom. An adjustment component 7 is fixedly installed on the top of the gas storage component 9. An extension frame 6 is fixedly installed on the front end of the adjustment component 7. A baffle 4 located at the front end of the worktable 2 is fixedly installed on the front end of the extension frame 6. Guide wheels 10 are symmetrically and movably installed inside the arc-shaped guide rail 8. A linkage component 13 is installed on the top of the adjustment component 7. The front end of the linkage component 13 is connected to the two guide wheels 10. A laser welding head 11 is fixedly installed on the front of the left guide wheel 10, and an arc welding head 12 is fixedly installed on the front of the right guide wheel 10. The included angles between the laser welding head 11 and the arc welding head 12 and the worktable 2 are exactly the same.

[0030] When welding a workpiece, the workpiece can be placed on top of the workbench 2, and the bottom of the gas storage component 9 can be connected to an external air pump. At the same time, the welding points of the laser welding head 11 and the arc welding head 12 should be aligned with the corresponding welding positions of the workpiece, and the laser welding head 11 and the arc welding head 12 should be turned on simultaneously to weld the corresponding positions of the workpiece, thus completing the initial welding process.

[0031] like Figure 2 and Figure 4 as well as Figure 5As shown, the air storage assembly 9 includes an air storage pipe 901. The outer side of the air storage pipe 901 is fixedly connected to the inside of the frame 1. A three-way valve 904 is fixedly connected to the bottom end of the air storage pipe 901. The bottom end of the three-way valve 904 is connected to an external air pump. A jet pipe 905 is fixedly connected to the front of the three-way valve 904. A through groove 5 is opened on the front of the baffle 4. The output end of the jet pipe 905 passes through the through groove 5 and is located on the front of the workbench 2.

[0032] During the welding process, an external air pump can be turned on to output high-pressure air into the three-way valve 904. At this time, the valve at the front end of the three-way valve 904 needs to be opened, and the high-pressure air can be discharged through the jet pipe 905 and directly act on the workpiece on the worktable 2 to cool down the welding position and remove debris, reduce the interference of welding debris to the surrounding environment, and reduce the welding heat.

[0033] By directly utilizing externally input high-pressure air, that is, by introducing high-pressure air into the interior of the three-way valve 904 and directly exporting it through the front end of the jet pipe 905, the flow of high-pressure air is used to directly assist the welding process, reduce the welding temperature, reduce metal debris, and complete the entire process automatically. This can effectively avoid the influence of welding debris on the welding and improve the welding quality.

[0034] like Figure 5 As shown, a piston plate 902 is movably sleeved inside the gas storage pipe 901. A piston rod 906 located inside the gas storage pipe 901 is fixedly connected to the top of the piston plate 902. The top of the piston rod 906 passes through the top of the gas storage pipe 901 and is connected to the adjusting component 7. A return spring 903 is movably sleeved on the outer side of the piston rod 906. The upper and lower ends of the return spring 903 are respectively connected to the top of the inner cavity of the gas storage pipe 901 and the top of the piston plate 902.

[0035] When the welding angle needs to be adjusted, the valve at the top of the three-way valve 904 can be opened, and high-pressure air can enter the interior of the air storage pipe 901. At this time, pressure can be applied to the piston plate 902, and the piston plate 902 will rise accordingly, driving the piston rod 906 to rise. At this time, the return spring 903 will be compressed. When the air in the air storage pipe 901 is discharged, the return spring 903 will automatically return to its original position, which will drive the piston plate 902 and the piston rod 906 to move downward.

[0036] like Figure 2 and Figure 4As shown, the adjustment assembly 7 includes a movable plate 701. The front of the movable plate 701 is connected to the extension frame 6. The bottom end of the movable plate 701 is connected to the top end of the piston rod 906. First fixed seats 702 are fixedly installed on both the left and right sides of the top end of the movable plate 701. The end of the first fixed seat 702 away from the movable plate 701 is movably connected to the connecting rod 704 through a rotating shaft. The end of the connecting rod 704 away from the first fixed seat 702 is movably connected to the second fixed seat 703 through a rotating shaft. The other end of the second fixed seat 703 is connected to the linkage assembly 13.

[0037] Example: When the piston rod 906 moves upward, the movable plate 701 moves upward accordingly, and drives the first fixed seat 702 to move upward. At this time, the two connecting rods 704 deflect, that is, they deflect in a direction away from the center. At this time, the included angle between the two connecting rods 704 increases, and a force is applied to the two second fixed seats 703, so that the two second fixed seats 703 move away from each other. When the movable plate 701 moves up and down, it can simultaneously drive the extension frame 6 and the baffle 4 to move up and down. At this time, the baffle 4 can move up and down relative to the worktable 2. When the angle adjustment is completed, the corresponding height of the baffle 4 can be adjusted simultaneously, that is, different heights of protection are provided for different welding angles, and the adaptive adjustment process is completed.

[0038] By utilizing the coordination process between the gas storage component 9 and the adjustment component 7 during device angle adjustment, the device can automatically adjust the height of the baffle 4 while adjusting the angle, so that the height of the protection is adapted to the welding angle. This avoids the problem that traditional devices cannot provide good protection at different welding angles, and significantly improves the protection effect.

[0039] like Figure 2 and Figure 6 as well as Figure 7 As shown, the linkage assembly 13 includes two staggered hinge rods 131. The front and top positions of the two hinge rods 131 are respectively connected to two guide wheels 10. A hinge shaft 132 is movably connected at the staggered position of the two hinge rods 131. The two hinge rods 131 are hinged to each other through the hinge shaft 132. The relatively close ends of the two hinge rods 131 are fixedly connected to the second fixed seats 703. The two second fixed seats 703 are symmetrically installed on the inner side of the hinge rods 131.

[0040] Example: When the second fixed seats 703 move away from each other, the two hinge rods 131 are subjected to a thrust, that is, with the hinge shaft 132 as the center, the two hinge rods 131 rotate relative to each other. At this time, the included angle between the two hinge rods 131 increases, and the two guide wheels 10 can rotate relative to the arc guide rail 8 and move away from each other, and drive the laser welding head 11 and the arc welding head 12 to move away from each other, and synchronously complete the angle adjustment. When the two second fixed seats 703 move closer to each other, they can drive the laser welding head 11 and the arc welding head 12 to move closer to each other, and complete the synchronous adjustment.

[0041] By utilizing the coordinated action of the gas storage component 9, the adjustment component 7, and the linkage component 13, when adjusting the angle, only the amount of gas entering the gas storage pipe 901 needs to be controlled. This allows for rapid synchronous adjustment of the laser welding head 11 and the arc welding head 12. The entire adjustment process is completed synchronously, ensuring that the welding points of the laser welding head 11 and the arc welding head 12 remain in the same position throughout the adjustment process. This satisfies different welding requirements and improves overall welding efficiency.

[0042] A method for operating a laser-arc hybrid welding device includes the following steps: S1: When welding a workpiece, the workpiece can be placed on top of the workbench 2, and the bottom of the three-way valve 904 can be connected to the external air pump. At the same time, it is necessary to ensure that the welding points corresponding to the laser welding head 11 and the arc welding head 12 are located on the corresponding welding points of the workpiece, and simultaneously turn on the laser welding head 11 and the arc welding head 12 to weld the workpiece. S2: During welding, turn on the external air pump to input high-pressure air into the three-way valve 904. At this time, the high-pressure air can be discharged through the jet pipe 905 and applied to the workpiece to complete the cooling and debris removal. S3: When it is necessary to adjust the welding angle, the top valve of the three-way valve 904 can be opened, and air will enter the interior of the air storage pipe 901, driving the piston plate 902 and piston rod 906 to rise. At this time, the return spring 903 will be compressed and drive the movable plate 701 to rise. At this time, the movable plate 701 can simultaneously drive the through groove 5 to rise, completing the adaptive adjustment of the height of the through groove 5. S4: At this time, the two connecting rods 704 deflect in a direction away from each other and apply a thrust to the two hinge rods 131 at the top. The two hinge rods 131 rotate relative to each other and the included angle increases. This drives the two guide wheels 10 to move away from each other synchronously, eventually causing the laser welding head 11 and the arc welding head 12 to move away from each other and complete the synchronous adjustment. At this time, the corresponding welding angle is adjusted accordingly.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser-arc hybrid welding device, comprising a frame (1), characterized in that: An arc-shaped guide rail (8) is fixedly installed on the front of the frame (1) near the top. A gas storage component (9) is fixedly sleeved on the frame (1) near the bottom. A base (3) is fixedly installed on the bottom of the frame (1). A workbench (2) located below the arc-shaped guide rail (8) is fixedly installed on the front of the frame (1) near the bottom. An adjustment component (7) is fixedly installed on the top of the gas storage component (9). An extension frame (6) is fixedly installed on the front end of the adjustment component (7). An extension frame (6) is fixedly installed on the front end of the extension frame (6) located on the workbench (2). The front end baffle (4) has guide wheels (10) symmetrically and movably installed inside the arc-shaped guide rail (8). The top of the adjustment component (7) is equipped with a linkage component (13). The front end of the linkage component (13) is connected to the two guide wheels (10). A laser welding head (11) is fixedly installed on the front of the guide wheel (10) on the left side, and an arc welding head (12) is fixedly installed on the front of the guide wheel (10) on the right side. The angle between the laser welding head (11) and the arc welding head (12) and the worktable (2) is exactly the same.

2. The laser-arc hybrid welding device according to claim 1, characterized in that: The gas storage assembly (9) includes a gas storage pipe (901), the outer side of which is fixedly sleeved with the inside of the frame (1), and a three-way valve (904) is fixedly connected to the bottom end of the gas storage pipe (901), and the bottom end of the three-way valve (904) is connected to an external air pump.

3. The laser-arc hybrid welding device according to claim 2, characterized in that: The front of the three-way valve (904) is fixedly connected to the jet pipe (905), and the front of the baffle (4) is provided with a through groove (5). The output end of the jet pipe (905) passes through the through groove (5) and is located on the front of the workbench (2).

4. The laser-arc hybrid welding device according to claim 3, characterized in that: A piston plate (902) is movably sleeved inside the gas storage pipe (901). A piston rod (906) located inside the gas storage pipe (901) is fixedly connected to the top of the piston plate (902). The top of the piston rod (906) passes through the top of the gas storage pipe (901) and is connected to the adjusting component (7). A return spring (903) is movably sleeved on the outer side of the piston rod (906). The upper and lower ends of the return spring (903) are respectively connected to the top of the inner cavity of the gas storage pipe (901) and the top of the piston plate (902).

5. The laser-arc hybrid welding device according to claim 4, characterized in that: The adjustment assembly (7) includes a movable plate (701), the front of which is connected to the extension frame (6), and the bottom end of which is connected to the top end of the piston rod (906).

6. The laser-arc hybrid welding device according to claim 5, characterized in that: First fixed seats (702) are fixedly installed on both the left and right sides of the top of the movable plate (701). The end of the first fixed seat (702) away from the movable plate (701) is movably connected to the connecting rod (704) through a rotating shaft. The end of the connecting rod (704) away from the first fixed seat (702) is movably connected to the second fixed seat (703) through a rotating shaft. The other end of the second fixed seat (703) is connected to the linkage component (13).

7. The laser-arc hybrid welding device according to claim 1, characterized in that: The linkage component (13) includes two staggered hinge rods (131). The two hinge rods (131) are connected to two guide wheels (10) at their front and near the top positions. A hinge shaft (132) is movably connected at the staggered positions of the two hinge rods (131). The two hinge rods (131) are hinged to each other through the hinge shaft (132).

8. The laser-arc hybrid welding device according to claim 7, characterized in that: The two hinge rods (131) are fixedly connected at their relatively close ends to the second fixing seat (703), and the two second fixing seats (703) are symmetrically installed on the inner side of the hinge rods (131).

9. The working method of the laser-arc hybrid welding device according to claim 8, characterized in that: Includes the following steps: S1: When welding the workpiece, the workpiece can be placed on the workbench (2) and the bottom of the three-way valve (904) can be connected to the external air pump. At the same time, it is necessary to ensure that the welding points corresponding to the laser welding head (11) and the arc welding head (12) are located on the corresponding welding points of the workpiece, and simultaneously turn on the laser welding head (11) and the arc welding head (12) to weld the workpiece. S2: During welding, turn on the external air pump to input high-pressure air into the three-way valve (904). At this time, the high-pressure air can be discharged through the jet pipe (905) and act on the workpiece to complete the cooling and debris removal. S3: When it is necessary to adjust the welding angle, the top valve of the three-way valve (904) can be opened, and air will enter the interior of the air storage pipe (901) and drive the piston plate (902) and piston rod (906) to rise. At this time, the return spring (903) will be compressed and drive the movable plate (701) to rise. At this time, the movable plate (701) can simultaneously drive the through groove (5) to rise, and complete the adaptive adjustment of the height of the through groove (5). S4: At this time, the two connecting rods (704) deflect in a direction away from each other and apply a thrust to the two hinge rods (131) at the top. At this time, the two hinge rods (131) rotate relative to each other and the included angle increases, driving the two guide wheels (10) to move away from each other synchronously. Finally, the laser welding head (11) and the arc welding head (12) move away from each other and complete the synchronous adjustment. At this time, the corresponding welding angle is adjusted accordingly.

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