Welding machine capable of adjusting welding angle

Abstract

The welding machine capable of adjusting the welding angle comprises a workbench and a welding gun, a column table is movably arranged on the workbench, a storage table is fixed to the top of the column table, an angle adjusting assembly is arranged on the storage table, a vertical base is fixed to one side of the storage table, a lifting base is arranged on one side of the vertical base in a sliding mode, and the angle adjusting assembly is arranged on the lifting base. The welding gun is mounted on the lifting seat through a fixing assembly, a supporting seat is fixed to one side of the vertical seat, a mounting shaft is movably arranged on the supporting seat, a swing seat is movably arranged on the mounting shaft, a fixing seat is fixed to one side of the swing seat, a limiting column is fixed to the bottom of the fixing seat, and a feeding lead screw is movably arranged at the bottom of the fixing seat. A feeding base is arranged under the fixing base, and an L-shaped ejector plate is fixed to one side of the feeding base. The problem that after an existing stud welding machine finishes welding, a screw needs to be manually added into a stud welding chuck of a welding gun, and the danger is large is solved.

Description

Technical Field

[0001] The invention relates to the field of welding equipment, and in particular to a welding machine with adjustable welding angle. Background Art

[0002] A stud welder is a device used for stud welding, which is commonly used in the production of metal structures or mechanical parts. Stud welding is a process of welding studs (similar to small bolts) to the surface of a workpiece, usually by arc welding. During operation, the stud welder will pass high current and pressure to generate enough heat between the stud and the metal matrix to form a strong weld. This process is widely used in the fields of automobiles, ships, steel structures, etc.

[0003] When using the existing stud welding machine, most workers hold a welding gun to weld the surface of the workpiece, and after welding, they need to manually add screws to the inside of the stud welding chuck of the welding gun, which is very dangerous.

[0004] Therefore, it is necessary to provide a new welding machine with adjustable welding angle to solve the above-mentioned technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a welding machine with adjustable welding angle, which solves the problem that in the existing stud welding machine, screws need to be manually added to the inside of the stud welding chuck of the welding gun after welding, which is very dangerous.

[0006] The welding machine with adjustable welding angle provided by the present invention comprises a workbench and a welding gun, wherein a column platform is movably arranged on the workbench, a storage platform is fixed on the top of the column platform, and an angle adjustment component is arranged on the storage platform; A stand is fixed on one side of the storage table, a lifting seat is slidably arranged on one side of the stand, the lifting seat is controlled by a cylinder to move up and down, and the welding gun is installed on the lifting seat through a fixing assembly; A support seat is fixed to one side of the stand, a mounting shaft is movably provided on the support seat, and a swing seat is movably provided on the mounting shaft; A through slot is provided inside the swing seat, and a plurality of storage boxes with receiving slots are slidably arranged at the through slot, and the receiving slots are located directly below the welding gun; A fixed seat is fixed on one side of the swing seat, a limiting column is fixed on the bottom of the fixed seat, a loading screw is movably arranged on the bottom of the fixed seat, a loading seat is arranged directly below the fixed seat, the loading screw and the limiting column both pass through the loading seat, an L-shaped ejecting plate is fixed on one side of the loading seat, a ejecting groove is opened on one side of the storage box, and the ejecting groove matches the size of the L-shaped ejecting plate.

[0007] In a preferred embodiment, hand screws are provided on both sides of the swing seat, and threaded ends of the hand screws are inserted into the swing seat and extend into the interior of the storage box.

[0008] In a preferred embodiment, a motor is mounted on the fixing seat, and an output end of the motor is connected to the feeding screw via a coupling.

[0009] In a preferred embodiment, a retractable gear is installed on the installation shaft, an electric telescopic rod is installed on one side of the stand, an output end of the electric telescopic rod is connected to a rack, and the rack is meshed with the retractable gear.

[0010] In a preferred embodiment, the fixing assembly includes two pairs of positioning seats and two groups of first slide grooves, the first slide grooves are arranged on the lifting seat, one pair of the positioning seats is fixed on the lifting seat, and the other pair of the positioning seats is slidably connected to the first slide grooves, a clamping plate is fixed on one side of the positioning seat, and the welding gun is located between the two clamping plates; A positioning screw is movably arranged inside the first sliding groove, the positioning screw passes through the positioning seat, and the positioning screw is threadedly connected to the positioning seat.

[0011] In a preferred embodiment, two adjacent clamping plates are fixedly connected by bolts.

[0012] In a preferred embodiment, the angle adjustment assembly includes a first mounting seat and a second mounting seat fixed to the storage table at intervals, two sliding shafts are provided through the first mounting seat, a side seat is provided on one side of the first mounting seat, and a first fixing plate is movably provided on one side of the side seat; A tightening screw is arranged between the two sliding shafts, a threaded sleeve is movably arranged on the first mounting seat, the tightening screw is threadedly connected to the threaded sleeve, and the two sliding shafts and the tightening screw are fixedly connected to the fixing plate; A rotating shaft is movably arranged on the second mounting seat, a second fixing plate is fixed to one end of the rotating shaft, a first worm gear is installed on the other end of the rotating shaft, a first worm is movably arranged on one side of the second mounting seat through a bearing, and the first worm gear is meshed with the first worm gear.

[0013] In a preferred embodiment, a limiting seat is fixed on one side of the first mounting seat, a transmission shaft is movably provided on the limiting seat, a first bevel gear is installed at the bottom of the transmission shaft, a second bevel gear is installed on the threaded sleeve, and the first bevel gear is meshed with the second bevel gear.

[0014] In a preferred embodiment, a connecting shaft is provided under the workbench, the top of the connecting shaft is fixedly connected to the column base, a second worm gear is installed at the bottom of the connecting shaft, a second worm is movably provided at the bottom of the workbench through a bearing, and the second worm is meshed with the second worm gear.

[0015] In a preferred embodiment, the first worm and the second worm are both single-start Archimedean worms.

[0016] Beneficial effects of the present invention: 1. When the welding machine needs to install studs, the cylinder is started to drive the lifting seat and the welding gun to move upward. At this time, the electric telescopic rod is started to drive the rack to move. Under the transmission action of the rack and the retractable gear, the swing seat rotates with the installation shaft, so that the storage box moves to the bottom of the welding gun. The motor is started to drive the feeding screw rod to move upward. At this time, the L-shaped ejector plate can enter the inside of the receiving slot and move upward. Under the action of the L-shaped ejector plate, the top screw can be pushed into the stud welding chuck at the bottom of the welding gun. The loading speed is fast and no manual loading is required, which greatly improves safety; 2. When the welding gun is welding the plate, the staff can directly fix the plate to be welded on the storage table. When it is necessary to weld a special-shaped part, the special-shaped part can be moved between the first fixed plate and the second fixed plate. At this time, the transmission shaft is rotated, and the threaded sleeve moves with the transmission of the two bevel gears. When the threaded sleeve rotates, it will drive the tightening screw to move along the sliding shaft until the two fixed plates fix the special-shaped part. At this time, the special-shaped part can be welded; 3. When the welding angle of the special-shaped part needs to be adjusted, the first worm is rotated to drive the first worm wheel and the rotating shaft to rotate to adjust the welding angle of the special-shaped part. The operation is simple and convenient, and the flexibility is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The main structure of the welding machine with adjustable welding angle provided by the present invention is a three-dimensional view Figure 1 ; Figure 2 A three-dimensional view of the main structure of the stand provided by the present invention; Figure 3 for Figure 2 A schematic diagram of the enlarged structure of shown; Figure 4 for Figure 2 A schematic diagram of the enlarged structure of B shown; Figure 5 for Figure 2 The enlarged structural schematic diagram of C is shown; Figure 6 The main structure of the welding machine with adjustable welding angle provided by the present invention is a three-dimensional view Figure 2 ; Figure 7 A side view of the main structure of a welding machine with adjustable welding angle provided by the present invention; Figure 8 A top view of the main structure of the welding machine with adjustable welding angle provided by the present invention; Fig. 9 A bottom view of the main structure of the welding machine with adjustable welding angle provided by the present invention; Fig.10 The angle adjustment assembly provided by the present invention has a stereoscopic view Figure 1 ; Fig.11 The angle adjustment assembly provided by the present invention has a stereoscopic view Figure 2 .

[0018] Numbers in the figure: 1, workbench; 2, welding gun; 3, column platform; 4, storage platform; 5, stand; 6, lifting seat; 7, support seat; 8, installation axis; 9, swing seat; 10, through slot; 11, receiving slot; 12, storage box; 13, fixed seat; 14, limit column; 15, loading seat; 16, L-shaped ejector plate; 17, ejector slot; 18, loading screw rod; 19, hand screw; 20, motor; 21, retractable gear; 22, electric telescopic rod; 23, rack; 24, positioning seat; 25, The first slide groove; 26, the clamping plate; 27, the positioning screw; 28, the bolt; 29, the first mounting seat; 30, the second mounting seat; 31, the sliding shaft; 32, the tightening screw; 33, the threaded sleeve; 34, the fixing plate; 35, the first fixing plate; 36, the rotating shaft; 37, the second fixing plate; 38, the first worm gear; 39, the first worm; 40, the limiting seat; 41, the transmission shaft; 42, the first bevel gear; 43, the second bevel gear; 44, the connecting shaft; 45, the second worm gear; 46, the second worm. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 ,as well as Fig.11 ,in Figure 1 The main structure of the welding machine with adjustable welding angle provided by the present invention is a three-dimensional view Figure 1 ; Figure 2 A three-dimensional view of the main structure of the stand provided by the present invention; Figure 3 for Figure 2A schematic diagram of the enlarged structure of shown; Figure 4 for Figure 2 A schematic diagram of the enlarged structure of B shown; Figure 5 for Figure 2 The enlarged structural schematic diagram of C is shown; Figure 6 The main structure of the welding machine with adjustable welding angle provided by the present invention is a three-dimensional view Figure 2 ; Figure 7 A side view of the main structure of a welding machine with adjustable welding angle provided by the present invention; Figure 8 A top view of the main structure of the welding machine with adjustable welding angle provided by the present invention; Fig. 9 A bottom view of the main structure of the welding machine with adjustable welding angle provided by the present invention; Fig.10 The angle adjustment assembly provided by the present invention has a stereoscopic view Figure 1 ; Fig.11 The angle adjustment assembly provided by the present invention has a stereoscopic view Figure 2 .

[0021] In the specific implementation process, Figure 1-Figure 11 As shown, it includes a workbench 1 and a welding gun 2, a column base 3 is movably provided on the workbench 1, a storage table 4 is fixed on the top of the column base 3, an angle adjustment component is provided on the storage table 4, the angle adjustment component includes a first mounting seat 29 and a second mounting seat 30 fixed on the storage table 4 at intervals, two sliding shafts 31 are penetrated through the first mounting seat 29, a side seat 34 is provided on one side of the first mounting seat 29, a first fixed plate 35 is movably provided on one side of the side seat 34, a tightening screw rod 32 is provided between the two sliding shafts 31, a threaded sleeve 33 is movably provided on the first mounting seat 29, the tightening screw rod 32 is threadedly connected with the threaded sleeve 33, the two sliding shafts 31 and the tightening screw rod 32 are fixedly connected with the fixed plate 34, and when the threaded sleeve 33 rotates, it will drive the tightening screw rod 32 to move along the direction of the sliding shaft 31.

[0022] A limited seat 40 is fixed on one side of the first mounting seat 29, a transmission shaft 41 is movably provided on the limited seat 40, a first bevel gear 42 is installed at the bottom of the transmission shaft 41, a second bevel gear 43 is installed on the threaded sleeve 33, the first bevel gear 42 is meshed with the second bevel gear 43, a rotating shaft 36 is movably provided on the second mounting seat 30, a second fixed plate 37 is fixed on one end of the rotating shaft 36, a first worm gear 38 is installed on the other end of the rotating shaft 36, a first worm 39 is movably provided on one side of the second mounting seat 30 through a bearing, the first worm 39 is meshed with the first worm gear 38, and when the welding gun is welding the plate, the staff can move the welding plate to be welded. The connected plates can be directly fixed on the storage table 4. When it is necessary to weld the special-shaped parts, the special-shaped parts can be moved between the first fixed plate 35 and the second fixed plate 37. At this time, the transmission shaft 41 is rotated, and the threaded sleeve 33 moves accordingly under the transmission action of the two bevel gears. When the threaded sleeve 33 rotates, it will drive the tightening screw 32 to move along the sliding shaft 31 until the two fixed plates fix the special-shaped parts. When it is necessary to adjust the welding angle of the special-shaped parts, the first worm 39 is rotated to drive the first worm wheel 38 and the rotating shaft 36 to rotate, so as to adjust the welding angle of the special-shaped parts. The operation is simple and convenient, and the flexibility is improved.

[0023] A connecting shaft 44 is provided under the workbench 1. The top of the connecting shaft 44 is fixedly connected to the column base 3. A second worm gear 45 is installed at the bottom of the connecting shaft 44. A second worm 46 is movably provided at the bottom of the workbench 1 through a bearing. The second worm 46 is meshed with the second worm gear 45. Rotating the second worm 46 can drive the second worm gear 45 to rotate. Under the transmission action of the second worm gear 45, the connecting shaft 44 will drive the column base 3 and the storage table 4 to move, so that the angle adjustment component moves to the processing area under the welding gun 2.

[0024] The first worm 39 and the second worm 46 are both single-head Archimedean worms with self-locking properties, ensuring that the workpieces will not move during welding.

[0025] When the welding gun is welding the plate, the staff can directly fix the plate to be welded on the storage table 4. When it is necessary to weld special-shaped parts, the special-shaped parts can be moved between the first fixed plate 35 and the second fixed plate 37. At this time, the transmission shaft 41 is rotated, and the threaded sleeve 33 moves accordingly under the transmission action of the two bevel gears. When the threaded sleeve 33 rotates, it will drive the tightening screw 32 to move along the sliding shaft 31 until the two fixed plates fix the special-shaped parts. When the welding angle of the special-shaped parts needs to be adjusted, the first worm 39 is rotated to drive the first worm wheel 38 and the rotating shaft 36 to rotate to adjust the welding angle of the special-shaped parts. The operation is simple and convenient, and the flexibility is improved.

[0026] A stand 5 is fixed on one side of the storage table 4, and a lifting seat 6 is slidably arranged on one side of the stand 5. The lifting seat 6 is controlled to move up and down by a cylinder. The welding gun 2 is installed on the lifting seat 6 through a fixing component. The fixing component includes two pairs of positioning seats 24 and two groups of first slide grooves 25. The first slide grooves 25 are opened on the lifting seat 6, one pair of positioning seats 24 is fixed on the lifting seat 6, and the other pair of positioning seats 24 is slidably connected with the first slide grooves 25. A clamping plate 26 is fixed on one side of the positioning seat 24, and the welding gun 2 is located between the two clamping plates 26. A positioning screw 27 is movably arranged inside a slide groove 25, and the positioning screw 27 passes through the positioning seat 24, and the positioning screw 27 is threadedly connected to the positioning seat 24. When installing the welding gun 2, the welding gun 2 can be first moved between the two clamping plates 26, and the hexagonal block is rotated to drive the positioning screw 27 to rotate. Under the action of the positioning screw 27, the clamping plate 26 moves along the first slide groove 25, and the welding gun 2 can be fixed by the two clamping plates 26. The two adjacent clamping plates 26 are fixedly connected by bolts 28, thereby improving the fixing effect of the welding gun.

[0027] A support seat 7 is fixed to one side of the stand 5, and a mounting shaft 8 is movably provided on the support seat 7, and a swing seat 9 is movably provided on the mounting shaft 8. A through groove 10 is provided inside the swing seat 9, and a plurality of storage boxes 12 with accommodating grooves 11 are slidably provided at the through groove 10. The accommodating groove 11 is located directly below the welding gun 2. Thumb screws 19 are provided on both sides of the swing seat 9, and the threaded ends of the hand screws 19 are inserted into the swing seat 9 and extend into the storage box 12. Threaded holes are provided on both sides of the storage box 12 and at corresponding positions on the swing seat 9. When in use, the storage box 12 at the end can pass the threaded end of the hand screw 19 through the swing seat 9 and screw it into the side of the storage box 12 to complete the fixation of the storage box 12.

[0028] A fixed seat 13 is fixed on one side of the swing seat 9, a limiting column 14 is fixed on the bottom of the fixed seat 13, a feeding screw 18 is movably arranged at the bottom of the fixed seat 13, a feeding seat 15 is arranged directly below the fixed seat 13, the feeding screw 18 and the limiting column 14 all penetrate the feeding seat 15, an L-shaped ejecting plate 16 is fixed on one side of the feeding seat 15, an ejecting groove 17 is provided on one side of the storage box 12, and the size of the ejecting groove 17 matches the size of the L-shaped ejecting plate 16, a motor 20 is installed on the fixed seat 13, the output end of the motor 20 is connected to the feeding screw 18 through a coupling, a retracting gear 21 is installed on the mounting shaft 8, an electric telescopic rod 22 is installed on one side of the stand 5, the output end of the electric telescopic rod 22 is connected to a rack 23, the rack 23 is meshed with the retracting gear 21, and when needed When the stud is to be installed, the cylinder is started to drive the lifting seat 6 and the welding gun 2 to move upward. At this time, the electric telescopic rod 22 is started to drive the rack 23 to move. Under the transmission action of the rack 23 and the retracting gear 21, the swing seat 9 rotates along with the installation shaft 8 until the storage box 12 moves to the bottom of the welding gun 2. At this time, the storage box 12 contacts the bottom of the welding gun 2, and the motor 20 is started to drive the loading screw 18 to start rotating. When the loading screw 18 rotates, it will drive the loading seat 15 to move upward along the limiting column 14. At this time, the L-shaped ejector plate 16 can enter the inside of the accommodating groove 11. Under the action of the L-shaped ejector plate 16, the top screw can be pushed into the inside of the stud welding chuck at the bottom of the welding gun 2. The loading speed is fast and no manual loading is required, and the safety is greatly improved.

[0029] Working principle of the present invention: During the use of the welding machine, the staff can place the studs to be loaded into the receiving groove 11 of the storage box 12, and ensure that the part of the studs to be welded faces the bottom. After the studs are placed, the storage box 12 is placed into the through groove 10. Figure 4 At this time, the two sides of the storage box 12 are slidably connected with the slideways provided on the swing seat 9, so that the storage box 12 is easy to move and also provides support for it. For the storage box 12 at the end, the threaded end of the hand screw 19 can be passed through the swing seat 9 and screwed into the side of the storage box 12 to complete the fixing of the storage box 12; When the stud needs to be installed, the cylinder is started to drive the lifting seat 6 and the welding gun 2 to move upward. At this time, the electric telescopic rod 22 is started to drive the rack 23 to move. Under the transmission action of the rack 23 and the retracting gear 21, the swing seat 9 rotates along the installation shaft 8 until the storage box 12 moves to the bottom of the welding gun 2. At this time, the storage box 12 contacts the bottom of the welding gun 2, and the motor 20 is started to drive the feeding screw 18 to start rotating. When the feeding screw 18 rotates, it will drive the feeding seat 15 to move upward along the limit column 14. At this time, the L-shaped ejector plate 16 can enter the accommodating groove 11 and move upward. Under the action of the L-shaped ejector plate 16, the top screw can be pushed into the stud welding chuck at the bottom of the welding gun 2. The loading speed is fast and no manual loading is required, which greatly improves the safety. When the welding gun is welding the plate, the staff can directly fix the plate to be welded on the storage table 4. When it is necessary to weld special-shaped parts, the special-shaped parts can be moved between the first fixed plate 35 and the second fixed plate 37. At this time, the transmission shaft 41 is rotated, and the threaded sleeve 33 moves accordingly under the transmission action of the two bevel gears. When the threaded sleeve 33 rotates, it will drive the tightening screw 32 to move along the sliding shaft 31 until the two fixed plates fix the special-shaped parts. When the welding angle of the special-shaped parts needs to be adjusted, the first worm 39 is rotated to drive the first worm wheel 38 and the rotating shaft 36 to rotate to adjust the welding angle of the special-shaped parts. The operation is simple and convenient, and the flexibility is improved.

[0030] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0031] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A welding machine with adjustable welding angle, comprising a workbench (1) and a welding gun (2), characterized in that: A column platform (3) is movably provided on the workbench (1), a storage platform (4) is fixed on the top of the column platform (3), and an angle adjustment component is provided on the storage platform (4); A stand (5) is fixed on one side of the storage table (4), a lifting seat (6) is slidably provided on one side of the stand (5), the lifting seat (6) is controlled by a cylinder to move up and down, and the welding gun (2) is mounted on the lifting seat (6) via a fixing assembly; A support seat (7) is fixed to one side of the stand (5), a mounting shaft (8) is movably provided on the support seat (7), and a swing seat (9) is movably provided on the mounting shaft (8); A through slot (10) is provided inside the swing seat (9), and a plurality of storage boxes (12) provided with receiving slots (11) are slidably arranged at the through slot (10), wherein the receiving slots (11) are located directly below the welding gun (2); A fixed seat (13) is fixed on one side of the swing seat (9), a limiting column (14) is fixed on the bottom of the fixed seat (13), a feeding screw (18) is movably arranged on the bottom of the fixed seat (13), a feeding seat (15) is arranged directly below the fixed seat (13), the feeding screw (18) and the limiting column (14) both pass through the feeding seat (15), an L-shaped ejector plate (16) is fixed on one side of the feeding seat (15), and an ejector groove (17) is provided on one side of the storage box (12), and the ejector groove (17) matches the size of the L-shaped ejector plate (16).

2. The welding machine with adjustable welding angle according to claim 1, characterized in that: Hand screws (19) are provided on both sides of the swing seat (9), and the threaded ends of the hand screws (19) are inserted into the swing seat (9) and extend into the interior of the storage box (12).

3. The welding machine with adjustable welding angle according to claim 2, characterized in that: A motor (20) is mounted on the fixing seat (13), and an output end of the motor (20) is connected to the feeding screw rod (18) via a coupling.

4. The welding machine with adjustable welding angle according to claim 3, characterized in that: A retractable gear (21) is mounted on the mounting shaft (8), an electric telescopic rod (22) is mounted on one side of the stand (5), an output end of the electric telescopic rod (22) is connected to a rack (23), and the rack (23) is meshed with the retractable gear (21).

5. The welding machine with adjustable welding angle according to claim 4, characterized in that: The fixing assembly comprises two pairs of positioning seats (24) and two groups of first slide grooves (25), wherein the first slide grooves (25) are arranged on the lifting seat (6), wherein one pair of the positioning seats (24) is fixed on the lifting seat (6), and the other pair of the positioning seats (24) is slidably connected to the first slide grooves (25), a clamping plate (26) is fixed on one side of the positioning seat (24), and the welding gun (2) is located between the two clamping plates (26); A positioning screw rod (27) is movably arranged inside the first sliding groove (25), the positioning screw rod (27) passes through the positioning seat (24), and the positioning screw rod (27) is threadedly connected to the positioning seat (24).

6. The welding machine with adjustable welding angle according to claim 5, characterized in that: Two adjacent clamping plates (26) are fixedly connected via bolts (28).

7. The welding machine with adjustable welding angle according to claim 6, characterized in that: The angle adjustment assembly comprises a first mounting seat (29) and a second mounting seat (30) fixed at intervals on the storage platform (4); two sliding shafts (31) are provided through the first mounting seat (29); a side seat (34) is provided on one side of the first mounting seat (29); and a first fixing plate (35) is movably provided on one side of the side seat (34); A tightening screw rod (32) is arranged between the two sliding shafts (31); a threaded sleeve (33) is movably arranged on the first mounting seat (29); the tightening screw rod (32) is threadedly connected to the threaded sleeve (33); and the two sliding shafts (31) and the tightening screw rod (32) are fixedly connected to the fixing plate (34); A rotating shaft (36) is movably disposed on the second mounting seat (30), a second fixing plate (37) is fixed to one end of the rotating shaft (36), a first worm gear (38) is mounted to the other end of the rotating shaft (36), a first worm gear (39) is movably disposed on one side of the second mounting seat (30) via a bearing, and the first worm gear (39) is meshed with the first worm gear (38).

8. The welding machine with adjustable welding angle according to claim 7, characterized in that: A limiting seat (40) is fixed on one side of the first mounting seat (29), a transmission shaft (41) is movably arranged on the limiting seat (40), a first bevel gear (42) is mounted on the bottom of the transmission shaft (41), a second bevel gear (43) is mounted on the threaded sleeve (33), and the first bevel gear (42) is meshed with the second bevel gear (43).

9. The welding machine with adjustable welding angle according to claim 8, characterized in that: A connecting shaft (44) is arranged below the workbench (1); the top of the connecting shaft (44) is fixedly connected to the column base (3); a second worm gear (45) is installed at the bottom of the connecting shaft (44); a second worm (46) is movably arranged at the bottom of the workbench (1) via a bearing; the second worm gear (46) is meshed with the second worm gear (45).

10. The welding machine with adjustable welding angle according to claim 9, characterized in that: The first worm (39) and the second worm (46) are both single-start Archimedean worms.

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