CN118699559A - Multi-angle automatic laser welding machine - Google Patents

Abstract

The present application relates to a multi-angle automatic laser welding machine, which relates to the technical field of laser welding. It comprises a workbench, a base, an X-axis slide rail, a Y-axis slide rail, a Z-axis slide rail and a welding head. The base and the X-axis slide rail are arranged on the surface of the workbench, the base is located between the X-axis slide rails, the Y-axis slide rail is slidably arranged on the X-axis slide rail, the Z-axis slide rail is slidably arranged on the Y-axis slide rail, a slider is slidably arranged on the Z-axis slide rail, a turntable is rotatably arranged on the side wall of the slider, a rotating component is arranged on the slider, a swing shaft opening is penetrated on the surface of the turntable, a semicircular ring is fixedly arranged on the inner wall of the swing shaft opening, the welding head is slidably arranged on the bottom wall of the semicircular ring, and a sliding component is arranged on the semicircular ring; the present application has the effect of welding the workpiece surface at multiple angles, without the need for frequent manual flipping of the workpiece, being able to adapt to different welding requirements, and improving the welding processing efficiency.

Description

A multi-angle automatic laser welding machine

Technical Field

The present application relates to the technical field of laser welding, and in particular to a multi-angle automatic laser welding machine.

Background Art

At present, laser welding machines are often called laser welding machines or laser welding machines. They are machines used for laser material processing. Laser welding uses high-energy laser pulses to locally heat the material 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.

The laser welding machine designed in the related technology can only weld the workpiece in the direction facing the welding head. When different surfaces of the workpiece need to be welded, on the one hand, the workpiece needs to be manually flipped, which affects the welding process efficiency. On the other hand, it cannot weld to the workpiece surface from different angles. The scope of application of welding is limited, and therefore needs to be improved.

Summary of the invention

The purpose of this application is to provide a multi-angle automatic laser welding machine, which has the advantages of welding the workpiece surface at multiple angles without the need for frequent manual flipping of the workpiece, being able to adapt to different welding requirements and improving welding processing efficiency.

The multi-angle automatic laser welding machine provided in this application adopts the following technical solution:

A multi-angle automatic laser welding machine comprises a workbench, a base, an X-axis slide rail, a Y-axis slide rail, a Z-axis slide rail and a welding head, wherein the base and the X-axis slide rail are arranged on the surface of the workbench, the base is located between the X-axis slide rails, the Y-axis slide rail is slidably arranged on the X-axis slide rail, the Z-axis slide rail is slidably arranged on the Y-axis slide rail, a slider is slidably arranged on the Z-axis slide rail, a turntable is rotatably arranged on the side wall of the slider, a rotating component is arranged on the slider, and the rotating component is used to drive the turntable to rotate on the slider; a swing shaft opening is penetrated on the surface of the turntable, a semicircular ring is fixedly arranged on the inner wall of the swing shaft opening, the axis of the semicircular ring and the axis of the slider are on the same vertical straight line, and the welding head is slidably arranged on the bottom wall of the semicircular ring; a sliding component is arranged on the semicircular ring, and the sliding component is used to drive the welding head to slide on the bottom wall of the semicircular ring along the circumferential direction of the semicircular ring.

By adopting the above technical scheme, when the laser welding machine is used for welding, the workpiece is first placed on the base, and the X-axis slide rail is used to drive the slider to slide along the width direction of the workbench, and the Y-axis slide rail is used to drive the slider to slide along the length direction of the workbench, and the slider and the welding head are slid to the top of the workpiece to be welded, and then the Z-axis slide rail is used to drive the slider to slide in the vertical direction, and the welding head is moved closer to or away from the workpiece; when the workpiece needs to be processed from different angles and directions, the rotating component is used to drive the turntable to rotate on the slider to change the angle between the welding head and the slider, or the sliding component is used to drive the welding head to slide on the bottom wall of the semicircular ring along the circumferential direction of the semicircular ring to change the angle between the welding head and the turntable surface, so that the welding head can process different surfaces of the workpiece from different angles in different directions without the need for personnel to flip the workpiece, thereby reducing the difficulty of operation, improving the welding processing efficiency, and being conducive to adapting to different welding processing requirements.

Optionally, the rotating component includes a first motor, a first gear and a first rack, the first motor is fixed on the slider, the first gear is interconnected with the driving shaft of the first motor, the first rack is integrally arranged on the end wall of the turntable, the length direction of the first rack is arranged along the circumferential direction of the turntable, and the first rack and the first gear are meshed with each other.

By adopting the above technical solution, when it is necessary to rotate the turntable to change the welding angle of the welding head, the first motor is used to drive the first gear to rotate, and the first gear is abutted against the first rack, thereby driving the turntable to rotate. The diameter of the first gear is smaller than the diameter of the first rack, so the control is convenient and fast, and the control accuracy is high.

Optionally, the sliding assembly includes a support roller, a sliding belt, a second motor, a second gear and a connecting rod, an annular cavity is opened in the semicircular ring, and a plurality of support rollers are rotatably arranged in the annular cavity, the sliding belt is sleeved on the support roller, and the sliding belt and the support roller are meshed with each other through the cooperation of key blocks and key grooves, and the sliding belt is against the inner wall of the annular cavity; a driving groove which is interconnected with the annular cavity is opened on the top wall of the semicircular ring, and tooth grooves are opened equidistantly on the surface of the sliding belt, the second motor is arranged on a turntable, and the second gear is connected with the driving shaft of the second motor, and the second gear passes through the driving groove and meshes with the tooth grooves on the sliding belt; a connecting groove which is interconnected with the annular cavity is opened on the bottom wall of the semicircular ring, and the connecting rod passes through the connecting groove, one end of the connecting rod is connected with the sliding belt, and the other end of the connecting rod is connected to the welding head.

By adopting the above technical scheme, when it is necessary to drive the welding head to slide on the bottom wall of the semicircular ring to change the welding angle of the welding head, the second motor is used to drive the second gear to rotate, the second gear is abutted against the tooth groove, and the sliding belt is supported by the support roller in the annular cavity. At the same time, the inner wall of the annular cavity limits the deformation of the sliding belt. The force on the tooth groove will drive the sliding belt to rotate on the support roller. When the sliding belt slides in the annular cavity, it drives the welding head to slide through the connecting rod. Since the semicircular ring is arranged in a semicircular shape, when the welding head slides on the bottom wall of the semicircular ring in the circumferential direction of the semicircular ring, the end point position of the welding head does not change, while the inclination angle of the welding head itself will change. This is not only convenient and quick to control, but also conducive to precise control of the welding point position, and ensures that the welding point position remains unchanged while only changing the inclination angle of the welding head, which is convenient for programming operation.

Optionally, a group of guide grooves are provided on the bottom wall of the semicircular ring, and the guide grooves are symmetrically arranged on both sides of the connecting groove. Guide blocks are slidingly arranged between the guide grooves, and the welding head is installed on the guide block. The end of the connecting rod away from the sliding belt direction is interconnected with the guide block; the welding head and the guide block are detachably connected.

By adopting the above technical solution, when the sliding belt slides in different directions in the annular cavity, the guide block is lubricated by lubricating oil in the guide groove, the friction between the guide block and the guide groove is small, the guide block is guided by the guide groove, and the sliding belt drives the guide block to slide on the bottom wall of the semicircular ring through the connecting rod, thereby driving the welding head to slide. At the same time, the guide groove supports the guide block, which can reduce the tension on the connecting rod. In this way, the connecting rod is not easy to cause the sliding belt to deform when sliding, and at the same time, the welding head is detachably connected to the guide block, which is convenient for disassembly and maintenance of the welding head.

Optionally, a limit strip is provided on the side of the slip belt facing the support roller, and a plurality of notches are provided through the limit strip for deformation of the limit strip. A limit groove is provided on the surface of the support roller for the limit strip to be inserted and slide, and the limit strip and the limit groove are adapted to each other.

By adopting the above technical solution, when the slip belt is transmitted on the support roller, the limit strip on the slip belt slides in the limit groove, and the limit strip abuts against the inner wall of the limit groove, which can further reduce the deformation phenomenon of the slip belt tension and improve the stability of the slip belt on the support roller. When the limit strip passes through the support rollers at both ends of the semicircular ring, the notch on the limit strip is conducive to the deformation of the limit strip, thereby extending the service life of the welding machine.

Optionally, the base includes a mounting seat and a rotating seat, the mounting seat is fixedly set on the surface of the workbench, the rotating seat is rotatably set on the mounting seat, and the mounting seat is provided with a third motor for driving the rotating seat to rotate; the rotating seat includes a connecting seat and a flipping seat, the connecting seat is connected to the third motor, the flipping seat is rotatably set on the connecting seat through a rotating shaft, a pneumatic clamp is set on the upper surface of the connecting seat, and a flipping assembly is set between the flipping seat and the connecting seat.

By adopting the above technical solution, after the workpiece is placed on the rotating seat, the rotating seat is controlled by the third motor to rotate on the mounting seat, so that the orientation of the workpiece can be quickly changed to change the welding position of the workpiece. This, combined with the change of the angle of the welding head, further improves the degree of automation of the welding machine; and when unloading, the flip seat and the connecting seat can be driven to rotate by the flip assembly to tilt the flip seat, and gravity can be used to automatically unload the processed workpiece; and after the third motor works, the flip direction of the flip seat can also be changed to realize the function of unloading in different directions, further improving the applicability of the equipment.

Optionally, the flip assembly includes a cylinder, a second rack and a third gear, the cylinder is arranged in a connecting seat, the piston rod of the cylinder is interconnected with the second rack, the third gear is arranged on a rotating shaft, and the second rack and the third gear are meshed with each other.

By adopting the above technical solution, when it is necessary to unload the workpiece on the connecting seat, the pneumatic clamp contracts, the cylinder drives the second rack to extend and retract, the second rack is offset against the third gear, driving the third gear and the rotating shaft to rotate, and then driving the flip seat and the connecting seat to flip and rotate rapidly.

Optionally, the pneumatic clamp is detachably mounted on the connecting seat via bolts.

By adopting the above technical solution, the pneumatic clamps can be disassembled and replaced, and different pneumatic clamps can be used to clamp and process workpieces of different shapes and specifications.

In summary, the present application includes at least one of the following beneficial technical effects:

1. By setting a workbench, a base, an X-axis slide rail, a Y-axis slide rail, a Z-axis slide rail, a welding head, a slider, a turntable, a rotating assembly, a swing shaft opening, a semicircular ring and a sliding assembly, the rotating assembly is used to drive the turntable to rotate on the slider to change the angle between the welding head and the slider, or the sliding assembly is used to drive the welding head to slide on the bottom wall of the semicircular ring along the circumferential direction of the semicircular ring to change the angle between the welding head and the turntable surface, so that the welding head can process different surfaces of the workpiece from different directions and different angles, without the need for personnel to flip the workpiece, reducing the difficulty of operation, improving the welding processing efficiency, and being conducive to adapting to different welding processing requirements;

2. By setting a support roller, a sliding belt, a second motor, a second gear and a connecting rod, the second motor is used to drive the second gear to rotate, the second gear is against the tooth groove, and the tooth groove force will drive the sliding belt to rotate on the support roller. Since the semicircular ring is arranged in a semicircular shape, when the welding head slides along the bottom wall of the semicircular ring in the circumferential direction of the semicircular ring, the end point position of the welding head does not change, but the inclination angle of the welding head itself will change. This is not only convenient and fast to control, but also conducive to the precise control of the welding point position. The welding point position is guaranteed to remain unchanged under the premise of only changing the inclination angle of the welding head, which is convenient for programming operation;

3. By setting up a mounting seat, a rotating seat, a third motor, a connecting seat, a flip seat and a pneumatic clamp, the flip seat and the connecting seat are driven to rotate through the flip assembly to tilt the flip seat, and gravity is used to automatically unload the processed workpiece. After the third motor works, the flipping direction of the flip seat can also be changed to realize the function of unloading in different directions, thereby further improving the applicability of the equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a multi-angle automatic laser welding machine provided in an embodiment of the present application;

FIG2 is a cross-sectional view of a semicircular ring used to embody an embodiment of the present application;

FIG3 is a cross-sectional view of a semicircular ring used to embody an embodiment of the present application;

FIG4 is a cross-sectional view of a base in an embodiment of the present application;

In the figure, 1, workbench; 11, X-axis slide rail; 12, Y-axis slide rail; 13, Z-axis slide rail; 14, welding head; 2, base; 21, mounting seat; 211, third motor; 22, rotating seat; 221, connecting seat; 222, flip seat; 3, slider; 31, turntable; 311, swing shaft opening; 32, semicircular ring; 321, annular cavity; 322, driving groove; 323, connecting groove; 4, rotating assembly; 4 1. The first motor; 42. The first gear; 43. The first rack; 5. The sliding assembly; 51. The support roller; 52. The sliding belt; 521. The tooth groove; 53. The second motor; 54. The second gear; 55. The connecting rod; 6. The guide groove; 61. The guide block; 7. The limit strip; 71. The notch; 72. The limit groove; 8. The flip assembly; 81. The cylinder; 82. The second rack; 83. The third gear; 9. The pneumatic clamp.

DETAILED DESCRIPTION

The present application is further described in detail below in conjunction with Figures 1 to 4.

A multi-angle automatic laser welding machine, referring to FIG1 , includes a workbench 1, a base 2, an X-axis slide rail 11, a Y-axis slide rail 12, a Z-axis slide rail 13 and a welding head 14, wherein the base 2 and the X-axis slide rail 11 are arranged on the surface of the workbench 1, the length direction of the X-axis slide rail 11 is arranged along the width direction of the workbench 1, and the base 2 is located between the X-axis slide rails 11. The Y-axis slide rail 12 is slidably arranged on the X-axis slide rail 11, and the length direction of the Y-axis slide rail 12 is arranged along the length direction of the workbench 1, and the Z-axis slide rail 13 is slidably arranged on the Y-axis slide rail 12, and the length direction of the Z-axis slide rail 13 is arranged along the vertical direction. A slider 3 is also slidably arranged on the Z-axis slide rail 13, and the slider 3 can slide on the Z-axis slide rail 13 in the vertical direction. The welding head 14 is set on the slider 3. When using the laser welding machine for welding, the workpiece is first placed on the base 2, and then the X-axis slide rail 11 is used to drive the slider 3 to slide along the width direction of the workbench 1, or the Y-axis slide rail 12 is used to drive the slider 3 to slide along the length direction of the workbench 1, and the slider 3 and the welding head 14 are slid to the top of the workpiece to be welded, and then the Z-axis slide rail 13 is used to drive the slider 3 to slide in the vertical direction, and the welding head 14 is moved closer to or away from the workpiece.

1 and 2, a turntable 31 is rotatably provided on the side wall of the slider 3, a rotating assembly 4 for driving the turntable 31 to rotate is provided on the slider 3, a swing shaft opening 311 is provided through the surface of the turntable 31, and the swing shaft opening 311 passes through the end wall of the turntable 31. A semicircular ring 32 is fixedly provided on the inner wall of the swing shaft opening 311, the semicircular ring 32 is arranged in a semicircular shape, and the axis of the semicircular ring 32 is on the same vertical line as the axis of the slider 3. The welding head 14 is slidably provided on the bottom wall of the semicircular ring 32, and a sliding assembly 5 for driving the welding head 14 to slide is provided on the semicircular ring 32. When the workpiece needs to be processed from different angles and directions, the rotating component 4 can be used to drive the turntable 31 to rotate on the slider 3 to change the angle between the welding head 14 and the slider 3, or the sliding component 5 can be used to drive the welding head 14 to slide on the bottom wall of the semicircular ring 32 along the circumferential direction of the semicircular ring 32 to change the angle between the welding head 14 and the surface of the turntable 31, so that the welding head 14 can be processed from different angles in different directions on different surfaces of the workpiece to meet different welding processing requirements.

1, the rotating assembly 4 includes a first motor 41, a first gear 42 and a first rack 43. The first motor 41 is fixedly arranged on the slider 3, the first gear 42 is connected to the driving shaft of the first motor 41, the first rack 43 is integrally arranged on the end wall of the turntable 31, the length direction of the first rack 43 is arranged along the circumferential direction of the turntable 31, the diameter of the first gear 42 is smaller than the diameter of the first rack 43, and the first rack 43 and the first gear 42 are meshed with each other. When the turntable 31 needs to be rotated to change the welding angle of the welding head 14, the first motor 41 is used to drive the first gear 42 to rotate, the first gear 42 is abutted against the first rack 43, and then the turntable 31 is driven to rotate.

2 and 3, the sliding assembly 5 includes a supporting roller 51, a sliding belt 52, a second motor 53, a second gear 54 and a connecting rod 55. An annular cavity 321 is provided in the semicircular ring 32, and the length direction of the annular cavity 321 is arranged along the length direction of the semicircular ring 32. A plurality of supporting rollers 51 are arranged to rotate in the annular cavity 321, and the length direction of the supporting rollers 51 is arranged along the width direction of the semicircular ring 32. The sliding belt 52 is sleeved on the supporting roller 51, and the sliding belt 52 and the supporting roller 51 are meshed with each other through the key block and the key groove. The side of the sliding belt 52 away from the supporting roller 51 abuts against the inner wall of the annular cavity 321. A driving groove 322 is provided on the top wall of the semicircular ring 32, which is interconnected with the annular cavity 321. Tooth grooves 521 are equidistantly provided on the surface of the sliding belt 52, and the second motor 53 is installed on the turntable 31. The second gear 54 is connected to the driving shaft of the second motor 53 . The second gear 54 passes through the driving slot 322 and meshes with the tooth slot 521 on the sliding belt 52 .

2 and 3, the bottom wall of the semicircular ring 32 is provided with a connecting groove 323 which is interconnected with the annular cavity 321, and the length direction of the connecting groove 323 is arranged along the circumferential direction of the semicircular ring 32. A group of guide grooves 6 are also provided on the bottom wall of the semicircular ring 32, and the guide grooves 6 are symmetrically arranged on both sides of the connecting groove 323. A guide block 61 is slidably arranged between the two guide grooves 6, and the welding head 14 is detachably connected to the guide block 61 by bolts. The connecting rod 55 passes through the connecting groove 323, and one end of the connecting rod 55 is fixedly connected to the sliding belt 52, and the other end of the connecting rod 55 is fixedly connected to the guide block 61. During welding, the second motor 53 is used to drive the second gear 54 to rotate, and the second gear 54 is against the tooth groove 521. The sliding belt 52 is supported by the support roller 51 in the annular cavity 321. At the same time, the inner wall of the annular cavity 321 limits the sliding belt 52 to limit the deformation of the sliding belt 52. The tooth groove 521 is forced to drive the sliding belt 52 to rotate on the support roller 51. At the same time, the guide block 61 is guided by the guide groove 6. The sliding belt 52 can drive the guide block 61 to slide on the bottom wall of the semicircular ring 32 through the connecting rod 55, thereby driving the welding The joint 14 slides, thereby realizing the change of the welding angle of the welding head 14; and because the semicircular ring 32 is arranged in a semicircular shape, when the welding head 14 slides along the bottom wall of the semicircular ring 32 along the circumferential direction of the semicircular ring 32, the end point position of the welding head 14 does not change, while the inclination angle of the welding head 14 itself will change. This is not only convenient and quick to control, but also conducive to the precise control of the welding point position, and the welding point position is guaranteed to remain unchanged under the premise of only changing the inclination angle of the welding head 14, which is convenient for programming and operation of the control system.

Referring to FIG. 2 , a limiting strip 7 is provided on one side of the slip belt 52 facing the supporting roller 51. In the present embodiment, two limiting strips 7 are symmetrically provided. The limiting strips 7 and the slip belt 52 are integrally formed. The limiting strips 7 are provided with a plurality of notches 71 for the deformation of the limiting strips 7. The surface of the supporting roller 51 is provided with a limiting groove 72 for the limiting strip 7 to be inserted and slided. The limiting strip 7 and the limiting groove 72 are adapted to each other. When the second motor 53 drives the slip belt 52 to transmit on the supporting roller 51, the limiting strip 7 on the slip belt 52 slides in the limiting groove 72, and the limiting strip 7 abuts against the inner wall of the limiting groove 72, which can further reduce the deformation of the slip belt 52 due to tension and improve the stability of the slip belt 52 on the supporting roller 51. When the limiting strip 7 passes through the supporting rollers 51 at both ends of the semicircular ring 32, the notches 71 on the limiting strip 7 are conducive to the deformation of the limiting strip 7.

1 and 4, the base 2 includes a mounting seat 21 and a rotating seat 22, the mounting seat 21 is fixedly arranged on the surface of the workbench 1, the rotating seat 22 is rotatably arranged on the mounting seat 21, the rotating seat 22 can rotate along its axis direction, and the mounting seat 21 is provided with a third motor 211 for driving the rotating seat 22 to rotate. The rotating seat 22 includes a connecting seat 221 and a flip seat 222, the connecting seat 221 is connected to the third motor 211, the flip seat 222 is rotatably arranged on the connecting seat 221 through a rotating shaft, the flip seat 222 can rotate toward the connecting seat 221 or away from the connecting seat 221, and the upper surface of the connecting seat 221 is detachably provided with a pneumatic clamp 9 by bolts. A flip assembly 8 is arranged between the flip seat 222 and the connecting seat 221, and the flip assembly 8 includes a cylinder 81, a second rack 82 and a third gear 83, the cylinder 81 is arranged in the connecting seat 221, the piston rod of the cylinder 81 is connected to the second rack 82, and the second rack 82 is arranged in the horizontal direction. The third gear 83 is arranged on the rotating shaft, and the third gear 83 is coaxially arranged with the rotating shaft, and the second rack 82 and the third gear 83 are meshed with each other. After the workpiece is placed on the rotating seat 22, the rotating seat 22 is controlled to rotate on the mounting seat 21 by the third motor 211, and the orientation of the workpiece can be quickly changed to change the welding position of the workpiece, so as to further improve the automation degree of the welding machine by coordinating with the change of the angle of the welding head 14. After the welding process is completed, the pneumatic clamp 9 shrinks, the cylinder 81 drives the second rack 82 to expand and contract, the second rack 82 and the third gear 83 are offset, and the third gear 83 and the rotating shaft are driven to rotate, and then the flip seat 222 and the connecting seat 221 are quickly flipped and rotated to tilt the flip seat 222, and the workpiece after processing is automatically unloaded by gravity; and after the third motor 211 works, the flip direction of the flip seat 222 can be changed to realize the function of unloading in different directions, which further improves the applicability of the equipment.

The implementation principle of the embodiment of the present application is:

When using the laser welding machine for welding, first place the workpiece on the base 2, and use the X-axis slide 11, Y-axis slide 12 and Z-axis slide 13 to move the welding head 14 close to or away from the workpiece; when it is necessary to weld the workpiece from different angles and directions, the first motor 41 can be operated to drive the turntable 31 to rotate on the slider 3 to change the angle between the welding head 14 and the slider 3, or the second motor 53 can be used to drive the sliding belt 52 to transmit in the semicircular ring 32, and the sliding belt 52 drives the welding head 14 to slide on the bottom wall of the semicircular ring 32 along the circumferential direction of the semicircular ring 32 through the connecting rod 55, changing the angle between the welding head 14 and the surface of the turntable 31, so that the welding head 14 can process different surfaces of the workpiece from different angles in different directions without the need for personnel to flip the workpiece, reducing the difficulty of operation, improving the welding processing efficiency, and being conducive to adapting to different welding processing requirements.

The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims (8)

1. The utility model provides a multi-angle automatic laser welding machine, includes workstation (1), base (2), X axle slide rail (11), Y axle slide rail (12), Z axle slide rail (13) and soldered connection (14), base (2) and X axle slide rail (11) set up on workstation (1) surface, base (2) are located between X axle slide rail (11), Y axle slide rail (12) slide and set up on X axle slide rail (11), Z axle slide rail (13) slide and set up on Y axle slide rail (12), a serial communication port, slide on Z axle slide rail (13) and be provided with slider (3), rotate on the lateral wall of slider (3) and be provided with carousel (31), be provided with rotary assembly (4) on slider (3), rotary assembly (4) are used for driving carousel (31) and rotate on slider (3); the surface of the rotary table (31) is provided with a swing shaft opening (311) in a penetrating way, a semicircular ring (32) is fixedly arranged on the inner wall of the swing shaft opening (311), the axis of the semicircular ring (32) and the axis of the sliding block (3) are positioned on the same vertical straight line, and the welding head (14) is arranged on the bottom wall of the semicircular ring (32) in a sliding way; the semi-circular ring (32) is provided with a sliding component (5), and the sliding component (5) is used for driving the welding head (14) to slide along the circumferential direction of the semi-circular ring (32) on the bottom wall of the semi-circular ring (32).

2. The multi-angle automatic laser welding machine according to claim 1, wherein the rotating assembly (4) comprises a first motor (41), a first gear (42) and a first rack (43), the first motor (41) is fixedly arranged on the sliding block (3), the first gear (42) is mutually connected with a driving shaft of the first motor (41), the first rack (43) is integrally arranged on an end wall of the turntable (31), the length direction of the first rack (43) is arranged along the circumferential direction of the turntable (31), and the first rack (43) is mutually meshed with the first gear (42).

3. The multi-angle automatic laser welding machine according to claim 1, wherein the sliding assembly (5) comprises a supporting roller (51), a sliding belt (52), a second motor (53), a second gear (54) and a connecting rod (55), an annular cavity (321) is formed in the semicircular ring (32), the supporting roller (51) is rotationally provided with a plurality of annular cavities (321), the sliding belt (52) is sleeved on the supporting roller (51), the sliding belt (52) and the supporting roller (51) are mutually meshed through matching of key blocks and key grooves, and the sliding belt (52) is propped against the inner wall of the annular cavity (321); the top wall of the semicircular ring (32) is provided with a driving groove (322) which is communicated with the annular cavity (321), tooth grooves (521) are formed in the surface of the sliding belt (52) at equal intervals, the second motor (53) is arranged on the rotary table (31), the second gear (54) is connected with the driving shaft of the second motor (53) mutually, and the second gear (54) penetrates through the driving groove (322) to be meshed with the tooth grooves (521) on the sliding belt (52) mutually; the connecting groove (323) communicated with the annular cavity (321) is formed in the bottom wall of the semicircular ring (32), the connecting rod (55) penetrates through the connecting groove (323), one end of the connecting rod (55) is connected with the sliding belt (52) mutually, and the other end of the connecting rod (55) is connected with the welding head (14).

4. A multi-angle automatic laser welding machine according to claim 3, wherein a group of guide grooves (6) are formed in the bottom wall of the semicircular ring (32), the guide grooves (6) are symmetrically arranged on two sides of the connecting groove (323), guide blocks (61) are slidably arranged between the guide grooves (6), the welding head (14) is arranged on the guide blocks (61), and one end, far away from the sliding belt (52), of the connecting rod (55) is connected with the guide blocks (61); the welding head (14) is detachably connected with the guide block (61).

5. A multi-angle automatic laser welding machine according to claim 3, characterized in that a limit bar (7) is arranged on one side of the sliding belt (52) facing the direction of the supporting roller (51), a plurality of notches (71) for deformation of the limit bar (7) are arranged on the limit bar (7) in a penetrating manner, limit grooves (72) for inserting and sliding the limit bar (7) are formed in the surface of the supporting roller (51), and the limit bar (7) and the limit grooves (72) are mutually matched.

6. The multi-angle automatic laser welding machine according to claim 1, wherein the base (2) comprises a mounting seat (21) and a rotating seat (22), the mounting seat (21) is fixedly arranged on the surface of the workbench (1), the rotating seat (22) is rotatably arranged on the mounting seat (21), and a third motor (211) for driving the rotating seat (22) to rotate is arranged on the mounting seat (21); the rotary seat (22) comprises a connecting seat (221) and a turnover seat (222), wherein the connecting seat (221) is connected with the third motor (211) mutually, the turnover seat (222) is rotatably arranged on the connecting seat (221) through a rotary shaft, a pneumatic clamp (9) is arranged on the upper surface of the connecting seat (221), and a turnover assembly (8) is arranged between the turnover seat (222) and the connecting seat (221).

7. The multi-angle automatic laser welding machine according to claim 6, wherein the turnover assembly (8) comprises an air cylinder (81), a second rack (82) and a third gear (83), the air cylinder (81) is arranged in the connecting seat (221), a piston rod of the air cylinder (81) is connected with the second rack (82) mutually, the third gear (83) is arranged on the rotating shaft, and the second rack (82) is meshed with the third gear (83) mutually.

8. The multi-angle automatic laser welding machine according to claim 6, wherein the pneumatic clamp (9) is detachably mounted on the connection base (221) by bolts.