Laser welding machine assembly for self-positioning rotary welding

Abstract

The invention discloses a laser welding machine assembly for self-positioning rotary welding, and belongs to the field of welding devices. Comprising a workbench, a rotatable welding table is arranged above the workbench, a laser welding head is arranged above the welding table, a gas conveying pipe is arranged in the laser welding head, a mounting plate is arranged on one side of the laser welding head, a swing assembly is arranged on the mounting plate, and one end of the swing assembly is connected with the laser welding head. According to the device, through the arranged connecting piece, during welding operation, the laser welding head can conduct swing welding operation, meanwhile, part of shielding gas is extracted through the action generated by the swing welding operation to be matched with output shielding gas, the covering range of the shielding gas is enlarged, and the welding quality of the device is further improved; defects generated during welding are effectively reduced, meanwhile, interference of plasmas on laser beams can be reduced, and the stability of welding operation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to a laser welding machine component for self-positioning rotation welding. Background Art

[0002] In modern manufacturing, with the advancement of technology and the diversification of consumer demand, products tend to be miniaturized and precise. Traditional welding methods are gradually unable to meet these high standards, and laser welding machines have become an ideal choice to solve this challenge with their high precision, high speed and good weld quality. Especially in the manufacturing process of micro and small parts, the requirements for welding accuracy and efficiency are more stringent, which has promoted the continuous innovation and development of laser welding technology.

[0003] In the prior art, when laser welding workpieces, a rotatable welding table is provided and a positioning fixture is installed, which realizes automatic positioning and clamping of the workpiece during welding and rotation during welding, greatly improving the welding accuracy and efficiency. However, when welding two circular ring parts on the welding table, the existing laser welding head changes the weld during the welding operation, resulting in reduced welding accuracy of the device and prone to weld defects such as spatter, cracking, porosity, etc. For this reason, we propose a self-positioning rotary welding laser welding machine component to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when welding two circular ring parts on a welding table in the prior art, the change of the weld seam of the existing laser welding head during the welding operation reduces the welding accuracy of the device and is prone to weld defects. A self-positioning rotary welding laser welding machine component is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A laser welding machine assembly for self-positioning rotary welding comprises a workbench, a rotatable welding table is arranged above the workbench, a laser welding head is arranged above the welding table, a gas pipe is arranged inside the laser welding head, a mounting plate is arranged on one side of the laser welding head, a swing assembly is arranged on the mounting plate, one end of the swing assembly is connected to the laser welding head and is used to drive the laser welding head to swing during welding operation; a collecting tube is arranged between the mounting plate and the laser welding head; a connecting piece is installed inside the welding end of the laser welding head, the connecting piece comprises a limit ring and an air injection ring, and the limit ring and the air injection ring are hollow structures; when part of the protective gas at the air pipe is extracted inside the collecting tube and then transported to the limit ring and then ejected, it is used to increase the coverage area of ​​the protective gas.

[0006] Preferably, the swing assembly includes a second driving part fixed on the mounting plate, the output end of the second driving part is fixedly connected to a rotating shaft, one end of the rotating shaft passes through the mounting plate and is fixed with a mounting plate, one side of the mounting plate is mounted to the outer wall of the laser welding head by bolts, and the surface of the rotating shaft is fixedly connected to a cam.

[0007] Preferably, the surface of the cam is fitted with a limit plate, the bottom of the limit plate is fixedly connected to a lifting rod, one end of the lifting rod is fixed with a piston, the piston is slidably connected in the collecting cylinder, a return spring is fixedly connected between the limit plate and the collecting cylinder, the return spring is sleeved on the surface of the lifting rod, and two storage chambers are arranged inside the collecting cylinder.

[0008] Preferably, an exhaust pipe is fixed to one side of the bottom of the collecting cylinder, a one-way valve is provided at the connection between the exhaust pipe and the collecting cylinder, one end of the exhaust pipe passes through the laser welding head and is connected to the air supply pipe, an exhaust pipe is fixedly connected to the bottom of the collecting cylinder, a one-way valve is provided at the connection between the exhaust pipe and the collecting cylinder, one end of the exhaust pipe passes through the laser welding head and is connected to the limit ring.

[0009] Preferably, a through hole is opened on the side surface of the limiting ring, an elastic sleeve is fixed to the bottom inner wall of the limiting ring, and a compression spring is fixed inside the elastic sleeve.

[0010] Preferably, an air nozzle is installed at the bottom of the air jet ring, the outer wall of the air jet ring is fixedly connected to the inner wall of the laser welding head, one side of the air jet ring is fixedly connected to a limiting ring, and a fixing rod is fixedly connected between the air jet ring and the limiting ring.

[0011] Preferably, an air inlet pipe is fixed to one side of the top of the collecting cylinder, a one-way valve is provided at the connection between the air inlet pipe and the collecting cylinder, an exhaust pipe is fixed to the other side of the top of the collecting cylinder, one end of the exhaust pipe is fixedly connected to a fixing ring, the fixing ring is fixed to the outer wall of the laser welding head, and symmetrically distributed nozzles are provided at the bottom of the fixing ring.

[0012] Preferably, a connecting plate is fixedly connected to the bottom of the mounting plate, an arc-shaped rod is installed on the surface of the connecting plate, and the exhaust pipe runs through the arc-shaped rod.

[0013] Preferably, a fixing plate is installed on the outer wall of the collecting cylinder, and one end of the fixing plate is fixedly connected to the mounting plate.

[0014] Preferably, a moving unit is provided at one end of the mounting plate, and the moving unit is installed on the bottom surface of the workbench. The axis of the bottom of the welding table is fixedly connected to the output end of the first driving unit, and the first driving unit is installed on the workbench.

[0015] Compared with the prior art, the present invention provides a self-positioning rotary welding laser welding machine assembly, which has the following beneficial effects: 1. By installing the swing component on the mounting plate, the laser welding head can be driven to swing during the welding operation. The swing of the laser beam can achieve more uniform heating, effectively reduce welding defects, expand the processing range, and increase the tolerance to the weld width, thereby improving the welding quality. Swing welding can reduce welding deformation and reduce welding residual stress, thereby improving production efficiency and welding quality.

[0016] 2. During the swing welding operation, part of the shielding gas in the gas pipe is extracted and then transported to the limit ring, and a downward pressure is applied to the shielding gas directly output from one end of the gas pipe to increase the coverage of the shielding gas. At the same time, during the operation, the oxidation of the workpiece during the welding process can be reduced, and the generation of plasma can be effectively suppressed to avoid affecting the laser welding.

[0017] 3. When the collecting tube reciprocates inside, it can also draw in external cold air and then spray it out through the nozzle. The cold air sprayed from the nozzle can blow and cool the workpieces on both sides of the welding seam, reduce the transfer of thermal stress, and at the same time improve the forming and curing effect of the weld after welding and reduce the deformation of the workpiece.

[0018] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The present invention provides a connecting piece, so that the laser welding head can perform a swing welding operation during the welding operation. At the same time, the effect generated by the swing welding operation is utilized to extract part of the shielding gas to cooperate with the shielding gas that has been output to increase the coverage of the shielding gas, further improve the welding quality of the device, effectively reduce the generation of defects during welding, and at the same time reduce the interference of plasma on the laser beam, thereby improving the stability of the welding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a self-positioning rotary welding laser welding machine assembly proposed by the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of a self-positioning rotary welding laser welding machine assembly from a top view proposed by the present invention.

[0021] Figure 3 This is a schematic diagram of the side sectional stereoscopic structure of a self-positioning rotary welding laser welding machine assembly proposed by the present invention.

[0022] Figure 4 This is a schematic diagram of the partial side view structure of the laser welding head proposed in the present invention.

[0023] Figure 5This is a schematic structural diagram of an overall side cross-sectional view of a self-positioning rotary welding laser welding machine assembly proposed by the present invention.

[0024] Figure 6 The present invention proposes Figure 5 Schematic diagram of the enlarged structure of area A in the middle.

[0025] Figure 7 This is a schematic diagram of the partial cross-sectional three-dimensional structure of the laser welding head proposed in the present invention.

[0026] Figure 8 The present invention proposes Figure 7 Schematic diagram of the enlarged structure of area B in the middle.

[0027] In the figure: 1. workbench; 2. welding table; 21. first driving part; 3. laser welding head; 31. air delivery pipe; 4. mounting plate; 51. second driving part; 52. rotating shaft; 53. mounting plate; 54. cam; 61. limit plate; 611. reset spring; 62. lifting rod; 63. piston; 64. collecting cylinder; 65. exhaust pipe; 66. exhaust pipe; 67. limit ring; 671. through hole; 672. elastic sleeve; 673. extrusion spring; 68. fixing rod; 69. jet ring; 691. limit ring; 692. jet nozzle; 81. air inlet pipe; 82. exhaust pipe; 83. fixing ring; 84. jet head; 85. connecting plate; 86. arc rod; 9. fixing plate; 10. moving unit. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, the term "multiple" refers to two or more. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0030] In the description of this specification, the description of the terms "one embodiment", "some implementations", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] Reference Figures 1 to 8 A self-positioning rotary welding laser welding machine assembly includes a workbench 1, a rotatable welding table 2 is arranged above the workbench 1, a laser welding head 3 is arranged above the welding table 2, a gas pipe 31 is arranged inside the laser welding head 3, a mounting plate 4 is arranged on one side of the laser welding head 3, a swing assembly is arranged on the mounting plate 4, one end of which is connected to the laser welding head 3, and is used to drive the laser welding head 3 to swing during the welding operation; a collecting tube 64 is arranged between the mounting plate 4 and the laser welding head 3; a connecting piece is installed inside the welding end of the laser welding head 3, and the connecting piece includes a limit ring 67 and an air injection ring 69, and the limit ring 67 and the air injection ring 69 are hollow structures; when part of the protective gas at the air pipe 31 is extracted from the collecting tube 64 and then transported to the limit ring 67 and then ejected, it is used to increase the coverage area of ​​the protective gas.

[0032] In the prior art, when welding two circular ring parts on a welding table 2, the workpiece to be welded is generally placed on the welding table 2 in advance. A clamp for fastening the workpiece is generally provided on the welding table 2 to position the workpiece to be welded and prevent displacement. When the workpiece is welded, the welding table 2 is driven to rotate by a driving source, so that the laser welding head 3 is located at the weld position of the top edge of the welding table 2 during welding, so as to achieve rapid welding operation of the two circular ring parts, thereby improving the overall welding efficiency. However, during welding, the welding seams of the two workpieces may be different in size, and the change of the welds may reduce the welding accuracy of the device, and weld defects may easily occur. In addition, the heated area of ​​the weld is small during laser welding, thereby reducing the overall welding quality of the laser welding device. Therefore, in this solution, when the laser welding head 3 is driven by the driving source to move to the welding table 2 for welding operation, the swing component provided can drive the laser welding head 3 to swing during the welding operation. As the laser beam moves Swinging can achieve more uniform heating, effectively reduce welding defects, expand the processing range, and improve the tolerance to the width of the weld, thereby improving the welding quality. Swinging welding can reduce welding deformation and reduce welding residual stress, thereby improving production efficiency and welding quality. On the other hand, during the swing welding operation, part of the protective shielding gas in the gas pipe 31 is extracted and then transported to the limit ring 67, and a downward pressure is applied to the shielding gas directly output from one end of the gas pipe 31 to increase the coverage of the shielding gas. At the same time, during operation, the oxidation of the workpiece during welding can be reduced, and the generation of plasma can be effectively suppressed to avoid affecting the laser welding. When the collecting tube 64 reciprocates inside, external cold air can be extracted at the same time and then sprayed through the nozzle 84. The cold air sprayed from the nozzle 84 can blow and cool the workpieces on both sides of the weld to reduce the transfer of thermal stress, while improving the forming and curing effect after the weld is welded, and reducing the deformation of the workpiece.

[0033] In a preferred embodiment, referring to Figure 4 The swing assembly includes a second driving part 51 fixed on the mounting plate 4, the output end of the second driving part 51 is fixedly connected to a rotating shaft 52, one end of the rotating shaft 52 passes through the mounting plate 4 and is fixed with a mounting plate 53, one side of the mounting plate 53 is fixed to the outer wall of the laser welding head 3 by bolts, and the surface of the rotating shaft 52 is fixedly connected to a cam 54; Among them, the second driving part 51 is replaced by a reciprocating motor drive. During the welding operation, starting the second driving part 51 can drive the rotating shaft 52 to rotate, and the rotation of the rotating shaft 52 drives the laser welding head 3 to swing back and forth. In this way, when the laser welding head 3 is laser welding, the emitted laser beam can move synchronously with the swing of the laser welding head 3. On the one hand, it can increase the welding area of ​​the weld, and achieve a good welding effect for welding workpieces of different sizes. On the other hand, the swing of the laser beam on the laser welding head 3 can heat the weld position more evenly, which can effectively reduce the occurrence of phenomena such as spatter, cracking, and pores during the welding operation. In addition, swing welding can reduce welding deformation and reduce welding residual stress, thereby improving production efficiency and welding quality. The cam 54 is set so that the force generated by the reciprocating rotation of the rotating shaft 52 is applied to the collecting tube 64 to provide kinetic energy for other components.

[0034] In a preferred embodiment, referring to Figure 6 , Figure 7 and Figure 8 The surface of the cam 54 is fitted with a limit plate 61, and a lifting rod 62 is fixedly connected to the bottom of the limit plate 61. A piston 63 is fixed to one end of the lifting rod 62. The piston 63 is slidably connected in the collecting tube 64. A return spring 611 is fixedly connected between the limit plate 61 and the collecting tube 64. The return spring 611 is sleeved on the surface of the lifting rod 62. Two storage chambers are arranged inside the collecting tube 64. An exhaust pipe 65 is fixed to one side of the bottom of the collecting tube 64. A one-way valve is arranged at the connection between the exhaust pipe 65 and the collecting tube 64. One end of the exhaust pipe 65 passes through the laser welding head 3 and is connected to the gas supply pipe 31. The collecting tube 64 An air outlet pipe 66 is fixedly connected to the bottom, a one-way valve is provided at the connection between the air outlet pipe 66 and the collecting tube 64, one end of the air outlet pipe 66 passes through the laser welding head 3 and is connected with the limiting ring 67, a through hole 671 is provided on the side surface of the limiting ring 67, an elastic sleeve 672 is fixed to the inner wall of the bottom of the limiting ring 67, an extrusion spring 673 is fixed inside the elastic sleeve 672, an air nozzle 692 is installed at the bottom of the air jet ring 69, the outer wall of the air jet ring 69 is fixedly connected to the inner wall of the laser welding head 3, a side surface of the air jet ring 69 is fixedly connected to the limiting ring 691, and a fixing rod 68 is fixedly connected between the air jet ring 69 and the limiting ring 67.

[0035] When the cam 54 reciprocates, it squeezes the limit plate 61, and finally drives the piston 63 to slide up and down inside the collecting tube 64, wherein two storage chambers are arranged inside the collecting tube 64, and negative pressure is generated inside the collecting tube 64, and part of the shielding gas delivered from the gas pipe 31 is extracted through the exhaust pipe 65, and then collected in one of the storage chambers. As the piston 63 reciprocates, the squeezed and collected shielding gas is delivered to the inside of the limit ring 67 through the outlet pipe 66, and finally ejected through a plurality of through holes 671. The ejected shielding gas is blown to the side of the jet ring 69. Due to the setting of the limit ring 691, the ejected shielding gas is guided to move downward, and the shielding gas ejected from the gas pipe 31 is ejected through the jet nozzle 692. The shielding gas ejected from the through hole 671 exerts a downward force, and the shielding gas ejected from the jet nozzle 692 makes the shielding gas cover a wider area when it is delivered to the weld position, thereby further improving the welding quality of the device; It should be understood that when the gas ejected from the air outlet pipe 66 enters the limiting ring 67 and blows toward the elastic sleeve 672, the elasticity of the extrusion spring 673 in the elastic sleeve 672 is less than the pressure of the gas ejected from the air outlet pipe 66, so that the elastic sleeve 672 is compressed so that the through hole 671 opened on one side of the limiting ring 67 is exposed, and the gas is ejected through the through hole 671 and released. Through this structural design, when the gas pressure is in a relatively weak state, one side of the elastic sleeve 672 can block the through hole 671 to avoid leakage of the protective gas and pollution of the working environment. At the same time, it can also have a good saving effect on the use of the protective gas, avoid waste of resources, and save production costs.

[0036] In a preferred embodiment, referring to Figure 5 , Figure 6 and Figure 7 An air inlet pipe 81 is fixed to one side of the top of the collecting cylinder 64, and a one-way valve is provided at the connection between the air inlet pipe 81 and the collecting cylinder 64. An exhaust pipe 82 is fixed to the other side of the top of the collecting cylinder 64, and one end of the exhaust pipe 82 is fixedly connected to a fixing ring 83, which is fixed to the outer wall of the laser welding head 3, and a symmetrically distributed nozzle 84 is provided at the bottom of the fixing ring 83. A connecting plate 85 is fixedly connected to the bottom of the mounting plate 4, and an arc rod 86 is installed on the surface of the connecting plate 85. The exhaust pipe 82 runs through the arc rod 86. A fixing plate 9 is installed on the outer wall of the collecting cylinder 64, and one end of the fixing plate 9 is fixedly connected to the mounting plate 4. A moving unit 10 is provided at one end of the mounting plate 4, and the moving unit 10 is installed on the bottom surface of the workbench 1. The axis of the bottom of the welding table 2 is fixedly connected to the output end of the first driving unit 21, and the first driving unit 21 is installed on the workbench 1.

[0037] When the piston 63 slides back and forth, external cold air is drawn through the air inlet pipe 81, and then stored in another storage chamber in the collecting tube 64, and then transported to the fixed ring 83 through the exhaust pipe 82, and ejected through the symmetrically arranged nozzles 84. The nozzles of the two nozzles 84 point to the welding workpiece positions on both sides of the weld. The cold air is blown to cool down, thereby improving the heat dissipation effect around the weld when the workpiece is welded, reducing the transfer of thermal stress, and at the same time improving the forming and curing effect after the weld is welded, reducing the deformation of the workpiece; The setting of the fixed plate 9 facilitates the fixed installation of the collecting tube 64 on the mounting plate 4, and the setting of the connecting plate 85 and the arc rod 86 facilitates the limiting of the exhaust pipe 82. The exhaust pipe 82 is a hose. When the laser welding head 3 swings, it does not affect the exhaust delivery of the exhaust pipe 82. The moving unit 10 includes two groups of moving parts that are staggered, and the moving parts include a driving motor, a screw rod, a guide rail, and a slide seat. One end of the mounting plate 4 is installed on the top moving part, so as to facilitate the laser welding head 3 to move to a suitable position for welding operations. This is the prior art and will not be repeated here.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-positioning rotary welding laser welding machine assembly, comprising a workbench (1), a rotatable welding table (2) being arranged above the workbench (1), a laser welding head (3) being arranged above the welding table (2), a gas delivery pipe (31) being arranged inside the laser welding head (3), and a mounting plate (4) being arranged on one side of the laser welding head (3), characterized in that: A swing assembly, arranged on the mounting plate (4), one end of which is connected to the laser welding head (3) and is used to drive the laser welding head (3) to swing during welding operation; A collecting cylinder (64) is arranged between the mounting plate (4) and the laser welding head (3); A connecting piece is installed inside the welding end of the laser welding head (3), the connecting piece comprising a limiting ring (67) and an air-jet ring (69), wherein the limiting ring (67) and the air-jet ring (69) are hollow structures; When part of the protective gas from the gas delivery pipe (31) is extracted from the inside of the collecting cylinder (64) and then delivered to the limiting ring (67) and then sprayed out, the coverage area of ​​the protective gas is increased.

2. A self-positioning rotary welding laser welding machine assembly according to claim 1, characterized in that: The swing assembly comprises a second driving part (51) fixed on the mounting plate (4), the output end of the second driving part (51) being fixedly connected to a rotating shaft (52), one end of the rotating shaft (52) passing through the mounting plate (4) and being fixed with a mounting plate (53), one side surface of the mounting plate (53) being mounted to an outer wall of the laser welding head (3) by means of bolts, and a cam (54) being fixedly connected to the surface of the rotating shaft (52).

3. A self-positioning rotary welding laser welding machine assembly according to claim 2, characterized in that: The surface of the cam (54) is in contact with a limit plate (61); a lifting rod (62) is fixedly connected to the bottom of the limit plate (61); a piston (63) is fixedly connected to one end of the lifting rod (62); the piston (63) is slidably connected in a collecting cylinder (64); a return spring (611) is fixedly connected between the limit plate (61) and the collecting cylinder (64); the return spring (611) is sleeved on the surface of the lifting rod (62); and two storage chambers are arranged inside the collecting cylinder (64).

4. A self-positioning rotary welding laser welding machine assembly according to claim 3, characterized in that: An exhaust pipe (65) is fixed to one side of the bottom of the collecting cylinder (64); a one-way valve is provided at the connection between the exhaust pipe (65) and the collecting cylinder (64); one end of the exhaust pipe (65) passes through the laser welding head (3) and is connected to the air supply pipe (31); an exhaust pipe (66) is fixedly connected to the bottom of the collecting cylinder (64); a one-way valve is provided at the connection between the exhaust pipe (66) and the collecting cylinder (64); one end of the exhaust pipe (66) passes through the laser welding head (3) and is connected to the limit ring (67).

5. The self-positioning rotary welding laser welding machine assembly according to claim 1, characterized in that: A through hole (671) is provided on the side surface of the limiting ring (67), an elastic sleeve (672) is fixed to the inner wall of the bottom of the limiting ring (67), and a compression spring (673) is fixed inside the elastic sleeve (672).

6. A self-positioning rotary welding laser welding machine assembly according to claim 5, characterized in that: An air jet nozzle (692) is installed at the bottom of the air jet ring (69), the outer wall of the air jet ring (69) is fixedly connected to the inner wall of the laser welding head (3), one side of the air jet ring (69) is fixedly connected to a limiting ring (691), and a fixing rod (68) is fixedly connected between the air jet ring (69) and the limiting ring (67).

7. The self-positioning rotary welding laser welding machine assembly according to claim 4, characterized in that: An air inlet pipe (81) is fixed to one side of the top of the collecting cylinder (64); a one-way valve is provided at the connection between the air inlet pipe (81) and the collecting cylinder (64); an exhaust pipe (82) is fixed to the other side of the top of the collecting cylinder (64); one end of the exhaust pipe (82) is fixedly connected to a fixing ring (83); the fixing ring (83) is fixed to the outer wall of the laser welding head (3); and symmetrically distributed air jets (84) are provided at the bottom of the fixing ring (83).

8. The self-positioning rotary welding laser welding machine assembly according to claim 7, characterized in that: A connecting plate (85) is fixedly connected to the bottom of the mounting plate (4), an arc-shaped rod (86) is mounted on the surface of the connecting plate (85), and the exhaust pipe (82) passes through the arc-shaped rod (86).

9. The self-positioning rotary welding laser welding machine assembly according to claim 1, characterized in that: A fixing plate (9) is mounted on the outer wall of the collecting cylinder (64), and one end of the fixing plate (9) is fixedly connected to the mounting plate (4).

10. The self-positioning rotary welding laser welding machine assembly according to claim 1, characterized in that: A moving unit (10) is provided at one end of the mounting plate (4), and the moving unit (10) is mounted on the bottom surface of the workbench (1). The axis of the bottom of the welding table (2) is fixedly connected to the output end of the first driving part (21), and the first driving part (21) is mounted on the workbench (1).

Images