Automatic laser welding machine

Abstract

The present invention provides an automatic laser welding machine, which relates to the technical field of laser welding machines, including a positioning platform located above the workbench of the welding machine body, a positioning mechanism detachably adjustable on the positioning platform, the positioning mechanism including a first positioning member and a second positioning member, the bottoms of the first positioning member and the second positioning member are both detachably engaged and assembled with the positioning platform through a base, the first positioning member includes a fixed plate, a push plate and a first adjustment shaft, the base is vertically arranged below the fixed plate, one side of the fixed plate is assembled and connected with the push plate through the first adjustment shaft, the second positioning member includes a lifting platform, a rotating platform and a side clamp, the lifting platform is adjusted and arranged above the base through a lifting mechanism, and one side below the rotating platform is rotatably connected with one side above the lifting platform. The present invention realizes arbitrary adjustment according to different heights and different angles of the material by matching and combining the first positioning member, the second positioning member and the third positioning member, so that the positioning effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding machines, and in particular to an automatic laser welding machine. Background Art

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

[0003] For example, an automatic laser welding machine with the patent number "CN105618931B" includes a main frame, a laser welding arm and a workbench arranged on the main frame, the end of the laser welding arm is provided with a laser welding head above the workbench, the workbench includes a displacement device and an adjustment plate fixedly arranged on the upper end of the displacement device, the adjustment plate is provided with a number of clamping holes for clamping tools, and an adjustment mechanism for adjusting the horizontal position of the adjustment plate is also provided between the adjustment plate and the displacement device. When using this laser welding machine, the workpiece can be quickly mounted and fixed on the adjustment plate of the workbench, and then the inclination angle of the workpiece mounted on the adjustment plate can be quickly adjusted through the adjustment mechanism, so that the working end face of the workpiece can be quickly and accurately aligned with the laser welding head, which is convenient for people to clamp tools and improve welding efficiency.

[0004] However, in the prior art, before welding the products to be welded, it is necessary to use a fixture to position different products on a workbench in a specific state, and weld the gaps between adjacent products, as shown in the attached manual. Figure 1 In the state of two products, when it is necessary to vertically weld only one side of the two products, generally one product is first positioned horizontally on the workbench, and then the other product is placed perpendicular to the workbench, and a positioning piece is placed under the product to support the products, so that there is just one side to be welded between the two products, and then another positioning piece is used to position the vertically set product on the workbench. At this time, the stability of the two products can be guaranteed, and welding is convenient. However, if it is necessary to weld the two products at an acute angle or an obtuse angle, it is more inconvenient for the positioning piece to fix the product, and the positioning angle is not easy to adjust, which is inconvenient to use. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the positioning effect of products in different states before welding is not very good.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic laser welding machine, comprising a welding machine body and a positioning platform, the positioning platform is located above the workbench of the welding machine body, the positioning platform is detachably adjustable and provided with a positioning mechanism, the positioning mechanism comprises a first positioning member and a second positioning member, the bottoms of the first positioning member and the second positioning member are both detachably engaged and assembled with the positioning platform through a base, the first positioning member comprises a fixed plate, a push plate and a first adjustment shaft, the base is vertically arranged below the fixed plate, one side of the fixed plate is assembled and connected with the push plate through a first adjustment shaft, the second positioning member comprises a lifting platform, a rotating platform and a side clamp, the lifting platform is arranged above the base through a lifting mechanism, one side below the rotating platform is rotatably connected with one side above the lifting platform, the side clamp is provided with two and symmetrically arranged at both ends of the rotating platform, the rotating platform has a built-in driving mechanism, and the two side clamps are synchronously driven and moved in reverse by the driving mechanism, a lifting frame is arranged on the positioning platform, and another second positioning member is assembled on the lifting frame, and the second positioning member and the lifting frame are combined into a third positioning member.

[0007] As a preferred embodiment, the lifting frame includes a right-angle frame, a second adjusting shaft and a right-angle seat, the installation structure of the right-angle seat and the positioning platform is the same as the installation structure of the base and the positioning platform, the upper part of the right-angle seat is assembled and connected to the right-angle frame through the second adjusting shaft, and the end of the right-angle frame away from the second adjusting shaft is detachably assembled and connected to the lower part of the base on the second positioning member. Through the set lifting frame, the overall height of the second positioning member can be adjusted. For example, when welding the outer sides of the end faces of two inclined spliced ​​materials, a second positioning member can be placed on the positioning platform, a material to be welded can be clamped by the second positioning member, and the height of the other second positioning member can be lifted to a certain height by the lifting frame, and then the other part material can be clamped by the second positioning member on the lifting frame, and the position and height of the lifting frame and the rotation angle of the rotating tables on the two second positioning members can be adjusted so that the two end faces of the materials are just aligned, and then the welding machine body is driven to perform the welding operation.

[0008] As a preferred embodiment, an insert block is provided at the center of one side of the base on the second positioning member away from the lifting platform, and a slot that is engaged with the insert block is provided at the center of one end of the right-angle frame away from the second adjusting axis. The engagement of the slot and the insert block facilitates installation between the right-angle frame and the second positioning member.

[0009] As a preferred embodiment, the positioning platform is a hollow structure, and a plurality of limiting holes are evenly arranged on the plane above the interior of the positioning platform, and a limiting tube that is engaged with the limiting holes is arranged below the base, and an insertion shaft is arranged below the interior of the positioning platform directly below the limiting hole, and the limiting tube is inserted between the limiting hole and the insertion shaft, and the inner and outer sides of the limiting tube are respectively engaged with the insertion shaft and the limiting hole. When the first positioning member and the second positioning member are installed on the positioning platform for limiting, the limiting tube below the base can be aligned with the upper part of the limiting hole and inserted into the limiting hole. After the limiting hole is inserted, the limiting tube is limited by the insertion shaft, and the limiting tube is mutually engaged and linked with the insertion shaft, the limiting tube will not rotate after being inserted into the limiting hole, so as to limit the direction of the first positioning member and the second positioning member, wherein the insertion block can be just inserted into the limiting hole, and the spacing between the limiting tube and the insertion block below the base on the second positioning member is the same as the spacing between adjacent limiting holes.

[0010] As a preferred embodiment, a groove is provided on the inner side of the lower end of the limiting tube, and a clamping ring is provided on the outer side of the lower end of the plug-in shaft to engage with the groove. The mutual engagement of the groove and the clamping ring can effectively ensure the stability of the limiting tube after being inserted into the limiting hole, thereby avoiding falling off.

[0011] As a preferred embodiment, a third adjusting shaft is provided on the side above the lifting platform away from the rotating connection, a slide groove is provided below the rotating platform, the upper end of the third adjusting shaft is slidably arranged in the slide groove through a slider, and the lifting platform is assembled and connected to the base through a fourth adjusting shaft below, and telescopic shafts are provided between the lifting platform and the base and between the lifting platform and the rotating platform. By adjusting the third adjusting shaft, the rotating platform can be rotated around one side to expand or close, thereby realizing the angle adjustment of the material clamped above the rotating platform. The telescopic shaft can effectively ensure the stability of the lifting platform during the lifting process and the stability of the rotating platform during rotation, thereby providing a guarantee for the stability of the material during welding.

[0012] As a preferred embodiment, the driving mechanism includes a gear, a tooth plate and a motor. The rotating table is a hollow structure. The gear is rotatably arranged at the center position inside the rotating table. The gear is driven to rotate by the motor. Two tooth plates are provided and arranged in parallel. The gear is meshingly arranged between the two tooth plates. One end of the tooth plate passes through the end surface of the rotating table and is fixedly assembled with the side clamp. By driving the motor, the gear is driven to rotate, and then the two tooth plates meshing with it are driven to move synchronously in the opposite direction, thereby driving the two side clamps to move in the opposite direction to clamp or release the material and ensure that the material can be exactly located at the center position of the rotating table.

[0013] As a preferred embodiment, an arc-shaped clamp is detachably provided on one side opposite to the other side of the two side clamps, a clamping strip is provided on the outer arc surface of the arc-shaped clamp, and a strip groove is provided on the inner side surface of the side clamp for sliding engagement with the clamping strip. By using the detachable arc-shaped clamp, when clamping a material with an arc-shaped structure on the outer surface, the arc-shaped clamp can be replaced for more stable clamping.

[0014] As a preferred embodiment, the first adjusting shaft, the second adjusting shaft, the third adjusting shaft and the fourth adjusting shaft have the same structure, the first adjusting shaft includes a threaded shaft, a fixing sleeve and an adjusting ring, the threaded shaft is only slidably arranged in the fixing sleeve up and down, the adjusting ring is engaged and rotated and sleeved on the outer side of one end where the fixing sleeve is connected to the threaded shaft, the end of the adjusting ring away from the fixing sleeve is threadedly sleeved on the outer side of the threaded shaft, the adjusting ring is driven to rotate relative to the fixing sleeve by rotating the adjusting ring, when the adjusting ring rotates, the built-in thread of the adjusting ring is rotationally connected with the outer thread of the threaded shaft, and the threaded shaft only moves up and down in the fixing sleeve, and the inner thread of the adjusting ring rotates to squeeze the threaded shaft to move up and down, so as to achieve the height adjustment operation of the first adjusting shaft, the second adjusting shaft, the third adjusting shaft or the fourth adjusting shaft.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] 1. The present invention realizes arbitrary adjustment according to different heights and angles of materials by matching and combining the first positioning member, the second positioning member and the third positioning member, so as to achieve better positioning effect.

[0017] 2. The present invention can achieve multi-angle adjustment of the material clamped by the second positioning member through the cooperation of the lifting platform and the rotating platform, so as to align and splice the material at different angles.

[0018] 3. The present invention achieves height adjustment operation of the first adjustment axis, the second adjustment axis, the third adjustment axis or the fourth adjustment axis by rotating the adjustment ring, and during adjustment, the staff only needs to gently swing the more prominent adjustment ring without careful observation for adjustment.

[0019] 4. The present invention uses a detachable arc clamp, and when clamping a material with an arc-shaped outer surface, the arc clamp can be replaced to make clamping more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the positioning structure and material clamping state of the prior art;

[0021] Figure 2 A three-dimensional diagram of an automatic laser welding machine provided by the present invention;

[0022] Figure 3A schematic diagram of a positioning platform of an automatic laser welding machine provided by the present invention;

[0023] Figure 4 A schematic diagram of the combination of a first positioning member and a second positioning member of an automatic laser welding machine provided by the present invention;

[0024] Figure 5 A schematic diagram of the combination of a second positioning member and a third positioning member of an automatic laser welding machine provided by the present invention;

[0025] Figure 6 A schematic diagram of a third positioning member of an automatic laser welding machine provided by the present invention;

[0026] Figure 7 A schematic diagram of the separation of a second positioning member and a right-angle frame of an automatic laser welding machine provided by the present invention;

[0027] Figure 8 A schematic diagram of a second positioning member of an automatic laser welding machine provided by the present invention;

[0028] Fig. 9 A schematic diagram of the assembly of a rotating table and a side clamp of an automatic laser welding machine provided by the present invention;

[0029] Fig.10 A schematic diagram of the internal structure of a rotating table of an automatic laser welding machine provided by the present invention;

[0030] Fig.11 A schematic diagram of a first adjustment axis of an automatic laser welding machine provided by the present invention;

[0031] Fig.12 A schematic diagram of the assembly of a limit tube and a positioning platform of an automatic laser welding machine provided by the present invention.

[0032] Legend:

[0033] 1. Welding machine body; 2. Positioning table; 3. First positioning piece; 4. Workbench; 5. Second positioning piece; 6. Base; 711. Fixed plate; 712. Push plate; 713. First adjustment axis; 811. Lifting table; 812. Rotating table; 813. Side clamp; 10. Lifting frame; 11. Third positioning piece; 121. Right angle frame; 122. Second adjustment axis; 123. Right angle seat; 131. Insert block; 132. Slot; 141, limiting hole; 142, limiting tube; 143, plug shaft; 151, slot; 152, snap ring; 161, third adjustment shaft; 162, slide groove; 163, fourth adjustment shaft; 164, telescopic shaft; 171, gear; 172, tooth plate; 173, motor; 181, arc clamp; 182, clamping strip; 183, strip groove; 191, threaded shaft; 192, fixing sleeve; 193, adjustment ring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 2-12 The present invention provides a technical solution: an automatic laser welding machine, including a welding machine body 1 and a positioning platform 2, the positioning platform 2 is located above the workbench 4 of the welding machine body 1, and a positioning mechanism is detachably adjusted on the positioning platform 2, the positioning mechanism includes a first positioning member 3 and a second positioning member 5, the bottoms of the first positioning member 3 and the second positioning member 5 are detachably engaged with the positioning platform 2 through a base 6, the first positioning member 3 includes a fixed plate 711, a push plate 712 and a first adjustment shaft 713, the base 6 is vertically arranged below the fixed plate 711, and one side of the fixed plate 711 is connected to the push plate 712 through the first adjustment shaft 713. 12 assembly connection, the second positioning member 5 includes a lifting platform 811, a rotating platform 812 and a side clamp 813. The lifting platform 811 is set above the base 6 by a lifting mechanism. The lower side of the rotating platform 812 is rotatably connected to the upper side of the lifting platform 811. Two side clamps 813 are symmetrically arranged at both ends of the rotating platform 812. The rotating platform 812 has a built-in driving mechanism. The two side clamps 813 are synchronously driven to move in reverse by the driving mechanism. A lifting frame 10 is set on the positioning platform 2, and another second positioning member 5 is assembled on the lifting frame 10. The second positioning member 5 and the lifting frame 10 are combined into a third positioning member 11.

[0036] like Figure 2-12 As shown, the lifting frame 10 includes a right-angle frame 121, a second adjustment shaft 122 and a right-angle seat 123. The installation structure of the right-angle seat 123 and the positioning platform 2 is the same as the installation structure of the base 6 and the positioning platform 2. The upper part of the right-angle seat 123 is assembled and connected with the right-angle frame 121 through the second adjustment shaft 122. The end of the right-angle frame 121 away from the second adjustment shaft 122 is detachably assembled and connected with the lower part of the base 6 on the second positioning member 5. By setting the lifting frame 10, the overall height of the second positioning member 5 can be adjusted, such as for the inclined splicing of two materials. When welding is performed on the outer side of the end face, a second positioning piece 5 can be placed on the positioning table 2, a material to be welded can be clamped by the second positioning piece 5, and the other second positioning piece 5 can be lifted to a certain height by the lifting frame 10, and then the other part material can be clamped by the second positioning piece 5 on the lifting frame 10, and the position and height of the lifting frame 10 and the rotation angle of the rotating table 812 on the two second positioning pieces 5 can be adjusted so that the end faces of the two materials are just aligned, and then the welding machine body 1 is driven to perform the welding operation.

[0037] like Figure 2-12 As shown, an insert block 131 is provided at the center of one side of the base 6 on the second positioning member 5 away from the lifting platform 811, and a slot 132 which is engaged with the insert block 131 is provided at the center of one end of the right-angle frame 121 away from the second adjustment axis 122. The engagement of the slot 132 and the insert block 131 facilitates the installation between the right-angle frame 121 and the second positioning member 5.

[0038] like Figure 2-12 As shown, the positioning platform 2 is a hollow structure, and a plurality of limiting holes 141 are evenly arranged on the plane above the interior of the positioning platform 2. A limiting tube 142 is provided below the base 6 and is engaged with the limiting hole 141. An insertion shaft 143 is provided below the interior of the positioning platform 2 directly below the limiting hole 141. The limiting tube 142 is inserted between the limiting hole 141 and the insertion shaft 143. The inner and outer sides of the limiting tube 142 are respectively engaged with the insertion shaft 143 and the limiting hole 141. When the first positioning member 3 and the second positioning member 5 are installed on the positioning platform 2 to limit the position, the limiting tube 142 below the base 6 can be moved. Aligned with the top of the limiting hole 141 and inserted into the limiting hole 141, after being inserted into the limiting hole 141, the limiting tube 142 is limited by the insertion shaft 143, and the limiting tube 142 is mutually engaged and linked, so that the limiting tube 142 will not rotate after being inserted into the limiting hole 141, thereby limiting the direction of the first positioning member 3 and the second positioning member 5, wherein the insertion block 131 can be just inserted into the limiting hole 141, and the spacing between the limiting tube 142 and the insertion block 131 below the base 6 on the second positioning member 5 is the same as the spacing between adjacent limiting holes 141.

[0039] like Figure 2-12 As shown, a slot 151 is provided on the inner side of the lower end of the limiting tube 142, and a snap ring 152 is provided on the outer side of the lower end of the insertion shaft 143 to engage with the slot 151. The mutual engagement of the slot 151 and the snap ring 152 can effectively ensure the stability of the limiting tube 142 after being inserted into the limiting hole 141 to avoid falling off.

[0040] like Figure 2-12As shown, a third adjusting shaft 161 is provided on the side above the lifting platform 811 away from the rotating connection, a slide groove 162 is provided below the rotating table 812, the upper end of the third adjusting shaft 161 is slidably arranged in the slide groove 162 through a slider, and the lifting platform 811 is assembled and connected to the base 6 through a fourth adjusting shaft 163 below, and a telescopic shaft 164 is provided between the lifting platform 811 and the base 6 and between the lifting platform 811 and the rotating table 812. By adjusting the third adjusting shaft 161, the rotating table 812 can be rotated around one side to expand or close, thereby realizing the angle adjustment of the material clamped above the rotating table 812. By setting the telescopic shaft 164, the stability of the lifting platform 811 during the lifting process and the stability of the rotating table 812 during rotation can be effectively guaranteed, thereby providing a guarantee for the stability of the material during welding.

[0041] like Figure 2-12 As shown, the driving mechanism includes a gear 171, a tooth plate 172 and a motor 173. The rotating table 812 is a hollow structure. The gear 171 is rotatably arranged at the center position inside the rotating table 812. The gear 171 is driven to rotate by the motor 173. There are two tooth plates 172 and they are arranged in parallel. The gear 171 is meshed and arranged between the two tooth plates 172. One end of the tooth plate 172 passes through the end surface of the rotating table 812 and is fixedly assembled and connected with the side clamp 813. By driving the motor 173, the gear 171 is driven to rotate, and then the two tooth plates 172 meshed with it are driven to move in the opposite direction synchronously, thereby driving the two side clamps 813 to move in the opposite direction to clamp or release the material, and ensure that the material can be just located at the center position of the rotating table 812.

[0042] like Figure 2-12 As shown, the two side clamps 813 have an arc-shaped clamp 181 removably disposed on one side opposite to the other, the outer arc surface of the arc-shaped clamp 181 is provided with a clamping strip 182, and the inner side surface of the side clamp 813 is provided with a strip groove 183 slidably engaged with the clamping strip 182. By using the removable arc-shaped clamp 181, when clamping a material with an arc-shaped structure on the outer surface, the arc-shaped clamp 181 can be replaced for more stable clamping.

[0043] like Figure 2-12As shown, the first adjusting shaft 713, the second adjusting shaft 122, the third adjusting shaft 161 and the fourth adjusting shaft 163 have the same structure. The first adjusting shaft 713 includes a threaded shaft 191, a fixing sleeve 192 and an adjusting ring 193. The threaded shaft 191 is only slidably arranged in the fixing sleeve 192 up and down. The adjusting ring 193 is engaged and rotatably sleeved on the outer side of one end of the fixing sleeve 192 connected with the threaded shaft 191. The end of the adjusting ring 193 away from the fixing sleeve 192 is threadedly sleeved on the outer side of the threaded shaft 191. By rotating the adjusting ring 193, the adjusting ring 193 is driven to rotate relative to the fixing sleeve 192. When the adjusting ring 193 rotates, the internal thread of the adjusting ring 193 is rotatably connected with the outer thread of the threaded shaft 191. The threaded shaft 191 only moves up and down in the fixing sleeve 192, and the internal thread of the adjusting ring 193 rotates to squeeze the threaded shaft 191 to move up and down, so as to achieve the height adjustment operation of the first adjusting shaft 713, the second adjusting shaft 122, the third adjusting shaft 161 or the fourth adjusting shaft 163.

[0044] Working principle: Before welding, according to the splicing state of the product material, if the edges of two plates need to be spliced, the first positioning member 3 can be used to fix one material on the positioning platform 2. When positioning, according to the width of the material, two first positioning members 3 are selected on both sides of the material, and the fixing is achieved by inserting the limiting tube 142 under the base 6 into the positioning platform 2, and the first adjusting shaft 713 is driven to make the push plate 712 close to the side of the material and cooperate with the two push plates 712 to clamp and limit the material, and then the second positioning member 5 is placed on the end face of the material, and another material is placed above the second positioning member 5, and the driving mechanism is driven to use the side clamp 813 to clamp both sides of the second material, and then the height of the second positioning member 5 is adjusted according to the height of the first material, so that the bottom of the second material is aligned with the first The top of one material is flush and the welding edge is aligned. Then the welding machine body 1 can be driven to weld the joint. If the two materials need to be spliced ​​at an angle, the joint can be welded. At this time, on the basis of the above steps, the rotating table 812 on the second positioning member 5 can be adjusted so that the rotating table 812 rotates a certain angle, and the second material above is driven to rotate a certain angle. The operation is simple and convenient to use. At the same time, when splicing vertical materials, the second positioning member 5 and the third positioning member 11 can be combined to achieve arbitrary adjustment according to different heights and different angles of the materials, so that the positioning effect is better. According to the splicing status of different materials, the first positioning member 3, the second positioning member 5 and the third positioning member 11 are matched and combined with each other to achieve a good limiting effect.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An automatic laser welding machine, comprising a welding machine body (1) and a positioning platform (2), wherein the positioning platform (2) is located above a workbench (4) of the welding machine body (1), and a positioning mechanism is detachably and adjustable on the positioning platform (2), characterized in that: The positioning mechanism comprises a first positioning member (3) and a second positioning member (5), the bottoms of the first positioning member (3) and the second positioning member (5) are both detachably engaged and assembled with the positioning platform (2) through a base (6), the first positioning member (3) comprises a fixed plate (711), a push plate (712) and a first adjustment shaft (713), the base (6) is vertically arranged below the fixed plate (711), one side of the fixed plate (711) is assembled and connected with the push plate (712) through the first adjustment shaft (713), the second positioning member (5) comprises a lifting platform (811), a rotating platform (812) and a side clamp (813), the lifting platform (811) is arranged above the base (6) through a lifting mechanism, the lower side of the rotating platform (812) is rotatably connected with the upper side of the lifting platform (811), and the side clamp (813) is provided with two and symmetrically arranged on the rotating platform (812). At both ends of the turntable (812), the turntable (812) has a built-in driving mechanism, and the two side clamps (813) are synchronously driven and moved in opposite directions by the driving mechanism. A third adjustment shaft (161) is provided on the upper side of the lifting platform (811) away from the rotating connection, and a slide groove (162) is provided below the rotating platform (812). The upper end of the third adjustment shaft (161) is slidably arranged in the slide groove (162) through a slider. The lower side of the lifting platform (811) is assembled and connected with the base (6) through a fourth adjustment shaft (163). A telescopic shaft (164) is provided between the lifting platform (811) and the base (6) and between the lifting platform (811) and the turntable (812). A lifting frame (10) is provided on the positioning platform (2), and another second positioning member (5) is installed on the lifting frame (10). The second positioning member (5) and the lifting frame (10) are combined into a third positioning member (11).

2. The automatic laser welding machine according to claim 1, characterized in that: The lifting frame (10) comprises a right-angle frame (121), a second adjustment shaft (122) and a right-angle seat (123); the installation structure of the right-angle seat (123) and the positioning platform (2) is the same as the installation structure of the base (6) and the positioning platform (2); the upper part of the right-angle seat (123) is assembled and connected to the right-angle frame (121) via the second adjustment shaft (122); the end of the right-angle frame (121) away from the second adjustment shaft (122) is detachably assembled and connected to the lower part of the base (6) on the second positioning member (5).

3. The automatic laser welding machine according to claim 2, characterized in that: An insert block (131) is provided at the center of one side of the base (6) on the second positioning member (5) away from the lifting platform (811), and a slot (132) engaged with the insert block (131) is provided at the center of one end of the right-angle frame (121) away from the second adjustment shaft (122).

4. The automatic laser welding machine according to claim 2, characterized in that: The positioning platform (2) is a hollow structure. A plurality of limiting holes (141) are evenly arranged on the plane above the interior of the positioning platform (2). A limiting tube (142) is arranged below the base (6) and is engaged with the limiting hole (141). An insertion shaft (143) is arranged below the interior of the positioning platform (2) directly below the limiting hole (141). The limiting tube (142) is inserted between the limiting hole (141) and the insertion shaft (143). The inner and outer sides of the limiting tube (142) are respectively engaged with the insertion shaft (143) and the limiting hole (141).

5. The automatic laser welding machine according to claim 4, characterized in that: A clamping groove (151) is provided on the inner side of the lower end of the position limiting tube (142), and a clamping ring (152) is provided on the outer side of the lower end of the insertion shaft (143) and is engaged with the clamping groove (151).

6. The automatic laser welding machine according to claim 1, characterized in that: The driving mechanism comprises a gear (171), a tooth plate (172) and a motor (173); the rotating platform (812) is a hollow structure; the gear (171) is rotatably arranged at the center position inside the rotating platform (812); the gear (171) is driven to rotate by the motor (173); two tooth plates (172) are provided and arranged in parallel; the gear (171) is meshedly arranged between the two tooth plates (172); one end of the tooth plate (172) passes through the end surface of the rotating platform (812) and is fixedly assembled and connected to the side clamp (813).

7. The automatic laser welding machine according to claim 6, characterized in that: An arc-shaped clamp (181) is detachably provided on one side opposite to the two side clamps (813); a clamping strip (182) is provided on the outer arc surface of the arc-shaped clamp (181); and a strip groove (183) is provided on the inner side surface of the side clamp (813) for sliding engagement with the clamping strip (182).

8. An automatic laser welding machine according to claim 2 or 7, characterized in that: The first adjusting shaft (713), the second adjusting shaft (122), the third adjusting shaft (161) and the fourth adjusting shaft (163) have the same structure. The first adjusting shaft (713) comprises a threaded shaft (191), a fixing sleeve (192) and an adjusting ring (193). The threaded shaft (191) is only slidably arranged in the fixing sleeve (192) up and down. The adjusting ring (193) is rotatably sleeved on the outer side of one end of the fixing sleeve (192) connected to the threaded shaft (191). The end of the adjusting ring (193) away from the fixing sleeve (192) is threadedly sleeved on the outer side of the threaded shaft (191).

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