A new laser-arc hybrid welding joint

Abstract

This application relates to the field of welding equipment technology and discloses a novel laser-arc hybrid welding head, comprising a sliding profile. An arc welding gun assembly is disposed on one side of the sliding profile, and a laser welding head body is disposed on the other side. In this novel laser-arc hybrid welding head, an adjusting plate is slidably connected vertically inside the sliding profile. The arc welding gun cover plate and the laser welding head body are respectively fixedly connected to the two sides of the adjusting plate. A power source drives a threaded rod to rotate, causing the adjusting plate to slide vertically within the sliding profile. This allows for precise adjustment of the height of the arc welding gun body and the laser welding head body. This design enables the welding head to adapt to the welding needs of workpieces of different thicknesses and shapes, greatly improving the versatility of the welding head.

Description

Technical Field

[0001] This application relates to the field of welding equipment technology, specifically a novel laser-arc composite welding head. Background Technology

[0002] In the field of welding technology, laser-arc hybrid welding has emerged with its unique advantages. It combines the high energy density of laser welding, which can quickly penetrate materials to form a stable molten pool, with the heat supply capacity of arc welding, which can effectively melt metal and enhance the wettability and fluidity of the weld. The synergistic effect of the two brings many advantages such as deep penetration, fast welding speed, high efficiency, and excellent weld quality. At the same time, it also has the characteristics of good gap bridging and full weld filling, which can effectively reduce heat input and reduce welding deformation and cracking.

[0003] However, most of the laser-arc hybrid welding heads on the market at present use existing standard welding heads and standard arc welding guns as a combination. This combination method has obvious drawbacks, resulting in a large overall weight and volume of the welding head, which not only occupies a lot of space, but also makes the operation cumbersome during the debugging process, causing many inconveniences to actual production applications, and seriously restricting the further promotion and application of laser-arc hybrid welding technology. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a novel laser-arc composite welding head, which has advantages such as ease of adjustment and maintenance, and solves one of the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a novel laser-arc composite welding head, comprising a sliding profile, wherein an arc welding gun assembly is disposed on one side of the sliding profile, and a laser welding head body is disposed on the other side of the sliding profile;

[0006] The arc welding gun assembly includes an arc welding gun cover plate, a ball joint seat is fixedly installed at the bottom end of the arc welding gun cover plate, an arc welding gun body is ball jointed inside the ball joint seat, the arc welding gun body has an L-shaped structure, a gun cable is connected to the top end of the arc welding gun body, and the gun cable is slidably connected to the upper surface of the arc welding gun cover plate.

[0007] The sliding profile is internally connected to an adjusting plate that slides up and down. The arc welding gun cover plate and the laser welding head body are respectively fixedly connected to the two sides of the adjusting plate.

[0008] The arc welding gun cover plate is internally equipped with an angle adjustment mechanism for adjusting the angle of the arc welding gun body.

[0009] Furthermore, the welding torch cable is slidably connected to the upper surface of the arc welding torch cover plate via a sliding bearing.

[0010] The above solution can reduce wear on the gun cable, decrease the frequency of gun cable replacement, and save costs.

[0011] Furthermore, the angle adjustment mechanism includes a rotating cylinder, which is rotatably connected to the inner wall of the arc welding gun cover plate. A set of symmetrically arranged angle motors are fixedly installed on the inner wall of the rotating cylinder. A lead screw is fixedly connected to the output end of each angle motor. A sleeve is threadedly connected to the outer surface of each lead screw. An arc-shaped rod that abuts against the surface of the arc welding gun body is fixedly connected to one end of each sleeve near the arc welding gun body. A set of telescopic rods is fixedly connected to the outer surface of each sleeve. The other end of each telescopic rod is fixedly connected to the inner wall of the rotating cylinder.

[0012] The above scheme, by driving two motors to rotate in opposite directions, can push the top of the arc welding gun body to flip through the arc rod set in the sleeve, thereby realizing the angle adjustment of the arc welding gun body in a specific plane, meeting the needs of different welding angles, and improving the flexibility and adaptability of welding.

[0013] Furthermore, an internal gear ring is fixedly connected to the inner wall of the top of the rotary drum, a drive motor is fixedly connected to the inner wall of the arc welding gun cover plate, a power shaft is fixedly connected to the bottom of the drive motor, and a gear is fixedly connected to the bottom of the power shaft. The gear meshes with the internal gear ring.

[0014] The above scheme, through the setting of gears and internal gear rings, can drive the angle motor and sleeve to rotate, thereby adjusting the relative contact position of the arc rod. In conjunction with the ball joint of the arc welding gun body of the ball joint seat, the arc welding gun body can be adjusted in all directions, allowing the arc welding gun body to flexibly adjust its angle in three-dimensional space, better adapt to various complex welding scenarios, and improve welding quality and efficiency.

[0015] Furthermore, a connecting plate is fixedly connected to the top of the sliding profile, and a mounting plate is fixedly connected to one end of the connecting plate. The mounting plate is connected to an external robotic arm.

[0016] By connecting the mounting plate to an external robotic arm, the welding head can achieve multi-degree-of-freedom movement with the help of the robotic arm, thereby expanding the welding range and improving the automation level and production efficiency of welding.

[0017] Furthermore, a threaded rod is rotatably connected between the inner top wall and the inner bottom wall of the sliding profile, the adjusting plate is threadedly connected to the threaded rod, and the top end of the threaded rod is connected to an external power source.

[0018] The above solution uses a power source to drive the threaded rod to rotate, which in turn causes the adjusting plate to slide up and down within the sliding profile. This allows for precise adjustment of the height between the arc welding gun body and the laser welding head body, adapting to the welding height requirements of different welding conditions and ensuring the stability and quality of the welding process.

[0019] Furthermore, the sliding profile is made of an alloy material, which is suitable for high-temperature welding in composite welding.

[0020] Through the above solution, the material can maintain high strength and stability, is not easily deformed or damaged, effectively extends the service life of the sliding profile, reduces equipment maintenance costs, and ensures the normal operation of the welding joint.

[0021] Furthermore, the arc welding gun cover plate and the arc welding gun body are both fixedly connected to the adjusting plate by bolts.

[0022] The above solution facilitates disassembly. When maintenance, replacement, or upgrade of the arc welding gun assembly is required, the operation can be completed quickly simply by removing the bolts, which greatly improves maintenance efficiency, reduces equipment downtime, and increases production efficiency.

[0023] To achieve the above objectives, this application provides the following technical solution: a novel laser-arc composite welding head, comprising a sliding profile, wherein an arc welding gun assembly is disposed on one side of the sliding profile, and a laser welding head body is disposed on the other side of the sliding profile;

[0024] The arc welding gun assembly includes an arc welding gun cover plate, a ball joint seat is fixedly installed at the bottom end of the arc welding gun cover plate, an arc welding gun body is ball jointed inside the ball joint seat, the arc welding gun body has an L-shaped structure, a gun cable is connected to the top end of the arc welding gun body, and the gun cable is slidably connected to the upper surface of the arc welding gun cover plate.

[0025] The sliding profile is internally connected to an adjusting plate that slides up and down. The arc welding gun cover plate and the laser welding head body are respectively fixedly connected to the two sides of the adjusting plate.

[0026] The arc welding gun cover plate is internally equipped with an angle adjustment mechanism for adjusting the angle of the arc welding gun body.

[0027] Furthermore, the welding torch cable is slidably connected to the upper surface of the arc welding torch cover plate via a sliding bearing.

[0028] The above solution can reduce wear on the gun cable, decrease the frequency of gun cable replacement, and save costs.

[0029] Furthermore, the angle adjustment mechanism includes a rotating cylinder, which is rotatably connected to the inner wall of the arc welding gun cover plate. A set of symmetrically arranged angle motors are fixedly installed on the inner wall of the rotating cylinder. A lead screw is fixedly connected to the output end of each angle motor. A sleeve is threadedly connected to the outer surface of each lead screw. An arc-shaped rod that abuts against the surface of the arc welding gun body is fixedly connected to one end of each sleeve near the arc welding gun body. A set of telescopic rods is fixedly connected to the outer surface of each sleeve. The other end of each telescopic rod is fixedly connected to the inner wall of the rotating cylinder.

[0030] The above scheme, by driving two motors to rotate in opposite directions, can push the top of the arc welding gun body to flip through the arc rod set in the sleeve, thereby realizing the angle adjustment of the arc welding gun body in a specific plane, meeting the needs of different welding angles, and improving the flexibility and adaptability of welding.

[0031] Furthermore, an internal gear ring is fixedly connected to the inner wall of the top of the rotary drum, a drive motor is fixedly connected to the inner wall of the arc welding gun cover plate, a power shaft is fixedly connected to the bottom of the drive motor, and a gear is fixedly connected to the bottom of the power shaft. The gear meshes with the internal gear ring.

[0032] The above scheme, through the setting of gears and internal gear rings, can drive the angle motor and sleeve to rotate, thereby adjusting the relative contact position of the arc rod. In conjunction with the ball joint of the arc welding gun body of the ball joint seat, the arc welding gun body can be adjusted in all directions, allowing the arc welding gun body to flexibly adjust its angle in three-dimensional space, better adapt to various complex welding scenarios, and improve welding quality and efficiency.

[0033] Furthermore, a connecting plate is fixedly connected to the top of the sliding profile, and a mounting plate is fixedly connected to one end of the connecting plate. The mounting plate is connected to an external robotic arm.

[0034] By connecting the mounting plate to an external robotic arm, the welding head can achieve multi-degree-of-freedom movement with the help of the robotic arm, thereby expanding the welding range and improving the automation level and production efficiency of welding.

[0035] Furthermore, a threaded rod is rotatably connected between the inner top wall and the inner bottom wall of the sliding profile, the adjusting plate is threadedly connected to the threaded rod, and the top end of the threaded rod is connected to an external power source.

[0036] The above solution uses a power source to drive the threaded rod to rotate, which in turn causes the adjusting plate to slide up and down within the sliding profile. This allows for precise adjustment of the height between the arc welding gun body and the laser welding head body, adapting to the welding height requirements of different welding conditions and ensuring the stability and quality of the welding process.

[0037] Furthermore, the sliding profile is made of an alloy material, which is suitable for high-temperature welding in composite welding.

[0038] Through the above solution, the material can maintain high strength and stability, is not easily deformed or damaged, effectively extends the service life of the sliding profile, reduces equipment maintenance costs, and ensures the normal operation of the welding joint.

[0039] Furthermore, the arc welding gun cover plate and the arc welding gun body are both fixedly connected to the adjusting plate by bolts.

[0040] The above solution facilitates disassembly. When maintenance, replacement, or upgrade of the arc welding gun assembly is required, the operation can be completed quickly simply by removing the bolts, which greatly improves maintenance efficiency, reduces equipment downtime, and increases production efficiency.

[0041] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0043] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this application. Figure 1 ;

[0044] Figure 2 This is a three-dimensional schematic diagram of the overall structure of this application. Figure 2 ;

[0045] Figure 3 This is a front view of the overall structure of this application;

[0046] Figure 4 This is a sectional view of the overall structure of this application from the front.

[0047] Figure 5 This is a structural diagram of the angle adjustment mechanism in this application.

[0048] icon:

[0049] 1. Sliding profiles;

[0050] 2. Arc welding torch assembly; 201. Arc welding torch cover plate; 202. Ball joint; 203. Arc welding torch body; 204. Torch cable;

[0051] 3. Laser welding head body; 4. Adjustment plate;

[0052] 5. Angle adjustment mechanism; 501. Rotary drum; 502. Angle motor; 503. Lead screw; 504. Sleeve; 505. Arc rod; 506. Telescopic rod;

[0053] 6. Internal gear ring; 7. Drive motor; 8. Power shaft; 9. Gear; 10. Connecting plate; 11. Mounting plate; 12. Threaded rod. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] Please see Figure 1 , Figure 2 and Figure 3 This embodiment discloses a novel laser-arc composite welding head, comprising a sliding profile 1, an arc welding gun assembly 2 on one side of the sliding profile 1, and a laser welding head body 3 on the other side of the sliding profile 1. A connecting plate 10 is fixedly connected to the top of the sliding profile 1, and a mounting plate 11 is fixedly connected to one end of the connecting plate 10. The mounting plate 11 is connected to an external robotic arm. By connecting the mounting plate 11 to the external robotic arm, the welding head can achieve multi-degree-of-freedom movement with the help of the robotic arm, expanding the welding range and improving the automation and production efficiency of welding. The sliding profile 1 is made of an alloy material. Under the high-temperature welding conditions of composite welding, this material can maintain high strength and stability, and is not prone to deformation or damage, effectively extending the service life of the sliding profile 1, reducing equipment maintenance costs, and ensuring the normal operation of the welding head.

[0056] Please see Figure 1 , Figure 3 and Figure 4 The arc welding gun assembly 2 includes an arc welding gun cover plate 201. A ball joint seat 202 is fixedly installed at the bottom end of the arc welding gun cover plate 201. An arc welding gun body 203 is ball-jointed inside the ball joint seat 202. The arc welding gun body 203 has an L-shaped structure. A gun cable 204 is connected to the top end of the arc welding gun body 203. The gun cable 204 is slidably connected to the upper surface of the arc welding gun cover plate 201. The gun cable 204 and the upper surface of the arc welding gun cover plate 201 are slidably connected through a sliding bearing. By setting the sliding bearing, the wear on the gun cable 204 can be reduced, the replacement frequency of the gun cable 204 can be reduced, and costs can be saved.

[0057] Please see Figure 1 , Figure 2 and Figure 3An adjusting plate 4 is slidably connected up and down inside the sliding profile 1. The arc welding gun cover plate 201 and the laser welding head body 3 are fixedly connected to the two sides of the adjusting plate 4 respectively. The adjusting plate 4 allows for easy adjustment of the height of the arc welding gun body 203 and the laser welding head body 3 to meet the welding needs of workpieces of different thicknesses and shapes, thereby improving the versatility and welding quality of the welding head. A threaded rod 12 is rotatably connected between the inner top wall and the inner bottom wall of the sliding profile 1. The adjusting plate 4 is threadedly connected to the threaded rod 12. The top of the threaded rod 12 is connected to an external power source. By driving the threaded rod 12 to rotate through the power source, the adjusting plate 4 can slide up and down inside the sliding profile 1, thereby precisely adjusting the height of the arc welding gun body 203 and the laser welding head body 3. The arc welding gun cover plate 201 and the arc welding gun body 203 are both fixedly connected to the adjusting plate 4 by bolts, which facilitates disassembly. When it is necessary to maintain, replace or upgrade the arc welding gun assembly 2, the operation can be completed quickly by simply removing the bolts, which greatly improves maintenance efficiency, reduces equipment downtime and improves production efficiency.

[0058] Please see Figure 1 , Figure 4 and Figure 5 An angle adjustment mechanism 5 is provided inside the arc welding gun cover plate 201 to adjust the angle of the arc welding gun body 203. By adjusting the angle of the arc welding gun body 203, the welding angle can be flexibly adjusted to meet the welding requirements under complex welding conditions and ensure the welding accuracy and effect. The angle adjustment mechanism 5 includes a rotating cylinder 501, which is rotatably connected to the inner wall of the arc welding gun cover plate 201. A set of symmetrically arranged angle motors 502 are fixedly installed on the inner wall of the rotating cylinder 501. The output end of each angle motor 502 is fixedly connected to a lead screw 503, and the outer surface of each lead screw 503 is threaded with a sleeve. Each sleeve 504 has an arc-shaped rod 505 fixedly connected to one end near the arc welding gun body 203, which abuts against the surface of the arc welding gun body 203. A set of telescopic rods 506 are fixedly connected to the outer surface of each sleeve 504. The other end of each telescopic rod 506 is fixedly connected to the inner wall of the rotating cylinder 501. With the above configuration, by driving two motors to rotate in opposite directions, the top end of the arc welding gun body 203 can be flipped by the arc-shaped rods 505 on the sleeve 504, so as to realize the angle adjustment of the arc welding gun body 203 in a specific plane, meet the needs of different welding angles, and improve the flexibility and adaptability of welding.

[0059] Please see Figure 1 , Figure 2 and Figure 3An internal gear ring 6 is fixedly connected to the inner wall of the top of the rotary drum 501, and a drive motor 7 is fixedly connected to the inner wall of the arc welding gun cover plate 201. A power shaft 8 is fixedly connected to the bottom of the drive motor 7, and a gear 9 is fixedly connected to the bottom of the power shaft 8. The gear 9 meshes with the internal gear ring 6. Through the setting of the gear 9 and the internal gear ring 6, the angle motor 502 and the sleeve 504 can be driven to rotate, thereby adjusting the relative contact position of the arc rod 505. In conjunction with the ball joint of the arc welding gun body 203 of the ball joint seat 202, the arc welding gun body 203 can be universally adjusted, so that the arc welding gun body 203 can flexibly adjust the angle in three-dimensional space, better adapt to various complex welding scenarios, and improve welding quality and efficiency.

[0060] The working principle of the above embodiment is as follows: A threaded rod 12 is rotatably connected between the inner top wall and inner bottom wall of the sliding profile 1. The adjusting plate 4 is threadedly connected to the threaded rod 12. The top end of the threaded rod 12 is connected to an external power source. When it is necessary to adjust the height of the arc welding gun body 203 and the laser welding head body 3, the external power source is activated to drive the threaded rod 12 to rotate. Due to the limitation of the internal structure of the sliding profile 1, the adjusting plate 4 cannot rotate with the threaded rod 12, but can only move along the axial direction of the threaded rod 12. This causes the arc welding gun cover plate 201 and the laser welding head body 3, which are fixed on both sides of the adjusting plate 4, to slide up and down inside the sliding profile 1. By precisely controlling the output of the power source, the height of the welding head can be precisely adjusted to meet the welding requirements of workpieces of different thicknesses and shapes, ensuring that the welding head and the workpiece maintain a suitable distance during the welding process and guaranteeing the welding quality. An angle adjustment mechanism 5 is provided inside the arc welding gun cover plate 201, which drives two angle motors 502 to rotate in opposite directions, driving the lead screw 503 to rotate. Because the sleeve 504 is threadedly connected to the lead screw 503 and is subject to extension and retraction... The rod 506 restricts rotation, allowing movement only along the axial direction of the lead screw 503. This, in turn, drives the top of the arc welding gun body 203 to rotate via the arc rod 505, enabling angle adjustment of the arc welding gun body 203 within a specific plane. Simultaneously, the drive motor 7 is activated, driving the gear 9 to rotate via the power shaft 8. The gear 9 meshes with the internal gear ring 6, causing the rotating drum 501 to rotate, which in turn drives the angle motor 502 and the sleeve 504 to rotate, adjusting the relative contact position of the arc rod 505. This, combined with the ball joint 202 and the ball joint of the arc welding gun body 203, allows for omnidirectional adjustment of the arc welding gun body 203 in three-dimensional space, meeting the needs of different welding angles under complex welding conditions and ensuring welding accuracy and effect. The mounting plate 11 is connected to an external robotic arm, allowing the welding head to achieve multi-degree-of-freedom movement with the aid of the robotic arm, expanding the welding range. During the welding process, the laser welding head body 3 rapidly penetrates the material with high energy density to form a stable molten pool, while the arc welding gun body 203 provides heat to melt the metal, enhancing the wettability and fluidity of the weld. The two work together to complete the welding operation.

[0061] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0062] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0064] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0065] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A novel laser-arc composite welding head, comprising a sliding profile (1), characterized in that: An arc welding gun assembly (2) is provided on one side of the sliding profile (1), and a laser welding head body (3) is provided on the other side of the sliding profile (1). The arc welding gun assembly (2) includes an arc welding gun cover plate (201), a ball joint seat (202) is fixedly installed at the bottom end of the arc welding gun cover plate (201), an arc welding gun body (203) is ball-jointed inside the ball joint seat (202), the arc welding gun body (203) has an L-shaped structure, a gun cable (204) is connected to the top end of the arc welding gun body (203), and the gun cable (204) is slidably connected to the upper surface of the arc welding gun cover plate (201); The sliding profile (1) is internally connected to an adjusting plate (4) that slides up and down. The arc welding gun cover plate (201) and the laser welding head body (3) are respectively fixedly connected to the two sides of the adjusting plate (4). The arc welding gun cover plate (201) is internally provided with an angle adjustment mechanism (5) for adjusting the angle of the arc welding gun body (203).

2. The novel laser-arc composite welding head according to claim 1, characterized in that: The gun cable (204) is slidably connected to the upper surface of the arc welding gun cover plate (201) via a sliding bearing.

3. The novel laser-arc composite welding head according to claim 1, characterized in that: The angle adjustment mechanism (5) includes a rotating drum (501), which is rotatably connected to the inner wall of the arc welding gun cover plate (201). A set of symmetrically arranged angle motors (502) are fixedly installed on the inner wall of the rotating drum (501). A lead screw (503) is fixedly connected to the output end of each angle motor (502). A sleeve (504) is threadedly connected to the outer surface of each lead screw (503). An arc-shaped rod (505) that abuts against the surface of the arc welding gun body (203) is fixedly connected to one end of each sleeve (504) near the arc welding gun body (203). A set of telescopic rods (506) is fixedly connected to the outer surface of each sleeve (504). The other end of each telescopic rod (506) is fixedly connected to the inner wall of the rotating drum (501).

4. A novel laser-arc composite welding head according to claim 3, characterized in that: An internal gear ring (6) is fixedly connected to the inner wall of the top of the rotary drum (501), a drive motor (7) is fixedly connected to the inner wall of the arc welding gun cover plate (201), a power shaft (8) is fixedly connected to the bottom of the drive motor (7), a gear (9) is fixedly connected to the bottom of the power shaft (8), and the gear (9) meshes with the internal gear ring (6).

5. A novel laser-arc composite welding head according to claim 1, characterized in that: The top end of the sliding profile (1) is fixedly connected to a connecting plate (10), and one end of the connecting plate (10) is fixedly connected to a mounting plate (11). The mounting plate (11) is connected to an external robotic arm.

6. The novel laser-arc composite welding head according to claim 1, characterized in that: A threaded rod (12) is rotatably connected between the inner top wall and the inner bottom wall of the sliding profile (1). The adjusting plate (4) is threadedly connected to the threaded rod (12), and the top end of the threaded rod (12) is connected to an external power source.

7. A novel laser-arc composite welding head according to claim 1, characterized in that: The sliding profile (1) is made of alloy material.

8. A novel laser-arc composite welding head according to claim 1, characterized in that: The arc welding gun cover plate (201) and the arc welding gun body (203) are both fixedly connected to the adjustment plate (4) by bolts.

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