Semi-automatic mobile welding apparatus

Abstract

This utility model relates to the field of metal welding processing technology, specifically disclosing a semi-automatic mobile welding device. The semi-automatic welding device includes: a main body, with a mounting plate fixedly connected to its upper surface. The mounting plate is sequentially equipped with a front-to-back adjustment mechanism, a vertical adjustment mechanism, and a horizontal adjustment mechanism from top to bottom. A positioning mechanism is located on one side of the mounting plate on the upper surface of the main body. The front-to-back adjustment mechanism includes a mounting frame, with a pair of mounting frames fixedly connected to the left and right sides of the upper surface of the mounting plate. An adjustment frame is fixedly connected to the upper surface of the mounting frame. Through the front-to-back adjustment mechanism, a drive motor drives a first pulley to rotate via a first rotating shaft, causing the first belt to move a first slider along the adjustment frame, thereby enabling precise adjustment of the front-to-back position of the welding-related components. The front-to-back position of the welding head can be flexibly adjusted according to the weld position, eliminating the need for frequent workpiece movement, reducing manual labor intensity, and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metal welding and processing technology, specifically to a semi-automatic mobile welding device. Background Technology

[0002] In modern industrial manufacturing, welding is a core process for connecting metal components, widely used in numerous fields such as automobile manufacturing, machinery equipment, and aerospace. This is accompanied by continuously increasing industry demands for welding precision, production efficiency, and automation adaptability.

[0003] Traditional welding equipment is increasingly revealing its lack of adaptability. On the one hand, welding operations are complex and diverse, requiring workpieces of varying sizes and shapes, as well as diverse weld seam orientations. Conventional equipment, mostly fixed in structure, lacks flexible multi-dimensional position adjustment capabilities. For example, when welding large workpieces, it is difficult to conveniently adjust the welding head's position (front / back, up / down, left / right), necessitating repeated handling and movement of the workpiece. This is not only labor-intensive but also prone to accumulating errors from multiple operations, affecting weld quality consistency and reducing production efficiency. On the other hand, workpiece positioning stability is crucial for welding results. Existing equipment positioning mechanisms either employ manual clamping, which is cumbersome and results in uneven force; or they have simple structures that struggle to achieve stable and precise positioning when dealing with irregularly shaped or easily deformable workpieces. During welding, workpiece shifting and shaking can easily occur, leading to weld deviations and defects, increasing rework costs. Furthermore, balancing equipment movement and operational stability is difficult. When moving between different workstations or workshops, traditional equipment is inconvenient to move and is easily affected by ground unevenness and equipment vibration, interfering with welding accuracy. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a semi-automatic mobile welding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a semi-automatic mobile welding device, the semi-automatic mobile welding device comprising: a main body, an mounting plate fixedly connected to the upper surface of the main body, the mounting plate being provided with a front-back adjustment mechanism, a vertical adjustment mechanism and a left-right adjustment mechanism in sequence from top to bottom, and a positioning mechanism being provided on one side of the upper surface of the main body located on the mounting plate;

[0006] The front and rear adjustment mechanism includes a mounting frame. A pair of mounting frames are fixedly connected to the left and right sides of the upper surface of the mounting plate. An adjustment frame is fixedly connected to the upper surface of the mounting frame. A pair of fixing blocks are fixedly connected to the front and rear sides of the adjustment frame. Each fixing block has a through hole inside. A drive motor is fixedly connected to the right side of the fixing block. A first rotating shaft is fixedly connected to the output end of one side of the drive motor. A first transmission shaft is movably connected inside the through hole. A first pulley is fixedly connected to the outer wall of both the first rotating shaft and the first transmission shaft. A first belt is drivenly connected to the outer wall of the pair of first pulleys. A first slider is fixedly connected to the outer wall of one side of the first belt.

[0007] Preferably, the up-and-down adjustment mechanism includes a movable plate, a movable plate fixedly connected to one side of the first slider, a mounting block fixedly connected to one side of the movable plate, a servo motor fixedly connected to one side of the upper surface of the mounting block, a second rotating shaft fixedly connected to the output end of one side of the servo motor, a set of second pulleys fixedly connected to the outer wall of the second rotating shaft, a second transmission shaft provided on one side of the movable plate, and another set of second pulleys fixedly connected to the outer wall of the second transmission shaft, a second belt drivingly connected to the outer walls of the pair of second pulleys, a first slide rail fixedly connected to one side of the movable plate, a lifting plate slidably connected to the outer wall of the first slide rail, a first fixed plate fixedly connected to one side of the lifting plate, and one side of the second transmission shaft connected to the back side of the first fixed plate, and a laser welder fixedly connected to one side of the first fixed plate.

[0008] Preferably, the left and right adjustment mechanism includes a drive gearbox. The drive gearbox is fixedly connected to the right side of the upper surface of the mounting plate. A reduction motor is fixedly connected to one side of the drive gearbox. A positioning plate is fixedly connected to one side of the drive gearbox. A fourth rotating shaft is movably connected inside the positioning plate, and the fourth rotating shaft is fixedly connected to the reduction motor via a coupling. A sliding frame is threaded onto the outer wall of the fourth rotating shaft. An air pump is fixedly connected inside the sliding frame. An air rod is fixedly connected to the output end of the upper surface of the air pump. Second slide rails are fixedly connected to the left and right sides inside the sliding frame. An adjustment plate is fixedly connected to the output end of the upper surface of the air rod, and the adjustment plate is connected to the second slide rails. Clamping plates are fixedly connected to the left and right sides of one side of the adjustment plate.

[0009] Preferably, the positioning mechanism includes a positioning frame, which is fixedly connected to the upper surface of the main body. A sliding groove is provided inside the positioning frame. A drive motor is fixedly connected to one side of the positioning frame. A third rotating shaft is fixedly connected to the output end of one side of the drive motor. A second slider is threadedly connected to the outer wall of the third rotating shaft. A second fixing plate is fixedly connected to the upper surface of the second slider. A second telescopic rod is fixedly connected to the upper surface of the second fixing plate. A placement platform is fixedly connected to the output end of the upper surface of the second telescopic rod.

[0010] Preferably, two pairs of first telescopic rods are fixedly connected to the lower surface of the main body, and a support block is fixedly connected to the output end of the lower surface of the first telescopic rods. Two pairs of universal wheels are movably connected to the lower surface of the main body.

[0011] Beneficial effects

[0012] This invention provides a semi-automatic mobile welding device. Compared with the prior art, it has the following advantages:

[0013] (1) The front and rear adjustment mechanism consists of a mounting frame, an adjustment frame, a fixed block, a drive motor, a first rotating shaft, a first transmission shaft, a first pulley, a first belt, and a first slider. The drive motor drives the first pulley to rotate through the first rotating shaft, which in turn drives the first slider to move back and forth along the adjustment frame. This allows for precise adjustment of the front and rear positions of the welding components. The front and rear positions of the welding head can be flexibly adjusted according to the weld position, eliminating the need to frequently move the workpiece, reducing manual labor intensity, and improving work efficiency. The up and down adjustment mechanism consists of a moving plate, a mounting block, a servo motor, a second rotating shaft, a second pulley, a second transmission shaft, a second belt, a first slide rail, a lifting plate, and a first fixed plate. The servo motor drives the second rotating shaft to rotate. Through the second pulley and the second belt, the lifting plate slides up and down along the first slide rail, allowing the laser welder to achieve height adjustment. This can precisely adapt to the welding requirements of workpieces of different thicknesses, ensuring that the welding head is always at the optimal welding height, thus improving the uniformity and stability of the weld.

[0014] (2) The left and right adjustment mechanism consists of a drive gearbox, a reduction motor, a positioning plate, a fourth rotating shaft, a sliding frame, an air pump, an air rod, a second slide rail, an adjustment plate, and a clamping plate. The reduction motor drives the fourth rotating shaft to rotate via the drive gearbox, causing the sliding frame to move left and right. At the same time, the air pump drives the air rod to move the adjustment plate up and down along the second slide rail, achieving stable clamping of the workpiece by the clamping plate. The clamping position and force can be flexibly adjusted according to the workpiece size, avoiding the positioning deviation caused by traditional manual clamping, effectively preventing the workpiece from loosening and shifting during welding, and ensuring welding accuracy. The positioning mechanism consists of a positioning frame, a drive motor, a third rotating shaft, a second slider, a second fixed plate, a second telescopic rod, and a placement table. The drive motor drives the third rotating shaft to rotate, causing the second slider to move left and right along the sliding groove. Combined with the telescopic adjustment of the second telescopic rod, the workpiece can move in multiple directions on the placement table, accurately delivering the workpiece to the welding position. In conjunction with the adjustment of the welding head, the automation and accuracy of the welding operation are further improved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the up-and-down adjustment mechanism structure according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the positioning mechanism and the left-right adjustment mechanism structure according to an embodiment of the present invention;

[0018] Figure 4 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A.

[0019] In the diagram: 1. Main body; 2. First telescopic rod; 3. Support block; 4. Caster wheel; 5. Mounting plate; 6. Mounting bracket; 7. Adjusting bracket; 8. Fixing block; 9. Through hole; 10. Drive motor; 11. First rotating shaft; 12. First transmission shaft; 13. First pulley; 14. First belt; 15. First slider; 16. Moving plate; 17. Mounting block; 18. Servo motor; 19. Second rotating shaft; 20. Second pulley; 21. Second transmission shaft; 22. Second belt; 23. 24. First slide rail; 25. Lifting plate; 26. First fixed plate; 27. Laser welder; 28. Positioning frame; 29. ​​Sliding groove; 30. Drive motor; 31. Third rotating shaft; 32. Second slider; 33. Second fixed plate; 34. Second telescopic rod; 35. Placement platform; 36. Drive gearbox; 37. Gear motor; 38. Positioning plate; 39. Fourth rotating shaft; 40. Sliding frame; 41. Air pump; 42. Air rod; 43. Second slide rail; 44. Adjusting plate; 45. Clamping plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1:

[0022] Please see Figures 1-4 As shown, this embodiment proposes a semi-automatic mobile welding device, including a main body 1. A mounting plate 5 is fixedly connected to the upper surface of the main body 1. The mounting plate 5 is provided with a front-back adjustment mechanism, a vertical adjustment mechanism, and a left-right adjustment mechanism from top to bottom. A positioning mechanism is provided on one side of the upper surface of the main body 1 located on the mounting plate 5.

[0023] The front and rear adjustment mechanism includes a mounting bracket 6. A pair of mounting brackets 6 are fixedly connected to the left and right sides of the upper surface of the mounting plate 5. An adjustment bracket 7 is fixedly connected to the upper surface of the mounting bracket 6. A pair of fixing blocks 8 are fixedly connected to the front and rear sides of the adjustment bracket 7. Each fixing block 8 has a through hole 9 inside. A drive motor 10 is fixedly connected to the right side of the fixing block 8. A first rotating shaft 11 is fixedly connected to the output end of one side of the drive motor 10. A first transmission shaft 12 is movably connected inside the through hole 9. A first pulley 13 is fixedly connected to the outer walls of both the first rotating shaft 11 and the first transmission shaft 12. A first belt 14 is drivenly connected to the outer wall of the first pulley 13. A first slider 15 is fixedly connected to the outer wall of one side of the first belt 14. (Activation and fixing are mentioned in the original text.) The drive motor 10 connected to the right fixed block 8 will drive the first rotating shaft 11 to start rotating. Since the first rotating shaft 11 is located inside the fixed block 8, and its outer wall and the outer wall of the first transmission shaft 12 are both fixedly connected to the first pulley 13, and the outer wall of the first pulley 13 is fixedly connected to the first belt 14, during the rotation of the first rotating shaft 11, the first transmission shaft 12, which is movably connected in the through hole 9 inside the fixed block 8, will be driven to rotate synchronously through the transmission action of the first pulley 13 and the first belt 14. As the first belt 14 rotates, the first slider 15, which is fixedly connected to the outer wall of the first belt 14, will move back and forth along the adjusting frame 7.

[0024] Preferably, the up-and-down adjustment mechanism includes a movable plate 16. The movable plate 16 is fixedly connected to one side of the first slider 15. A mounting block 17 is fixedly connected to one side of the movable plate 16. A servo motor 18 is fixedly connected to one side of the upper surface of the mounting block 17. A second rotating shaft 19 is fixedly connected to the output end of one side of the servo motor 18. A set of second pulleys 20 is fixedly connected to the outer wall of the second rotating shaft 19. A second transmission shaft 21 is provided on one side of the movable plate 16, and another set of second pulleys 20 is fixedly connected to the outer wall of the second transmission shaft 21. The outer walls of the pair of second pulleys 20 are connected by a transmission mechanism. The second belt 22 and the first slide rail 23 are fixedly connected to one side of the moving plate 16. A lifting plate 24 is slidably connected to the outer wall of the first slide rail 23. A first fixed plate 25 is fixedly connected to one side of the lifting plate 24. One side of the second drive shaft 21 is connected to the back side of the first fixed plate 25. A laser welder 26 is fixedly connected to one side of the first fixed plate 25. A sliding plate is provided on the upper surface of the adjusting frame 7 and the lower surface of the moving plate 16. Driven by the first slider 15, the moving plate 16 moves back and forth along the sliding plate, which supports the moving plate 16. When adjusting the vertical position of the laser welder 26, the servo motor 18 fixed on one side of the upper surface of the mounting block 17 is activated. The output end of the servo motor 18 will drive the second rotating shaft 19 to start rotating. Since the outer wall of the second rotating shaft 19 is fixedly connected to the second pulley 20, and the outer wall of the second drive shaft 21 set on one side of the moving plate 16 is fixedly connected to the second belt 22, when the second rotating shaft 19 rotates, it will drive the second drive shaft 21 to rotate synchronously through the transmission of the second pulley 20 and the second belt 22. And because the second drive shaft 21... The back side of the first fixed plate 25 is fixedly connected to one side of the lifting plate 24, and the lifting plate 24 is slidably connected to the outer wall of the first slide rail 23 fixed on one side of the moving plate 16. Therefore, under the action of the second transmission shaft 21, the lifting plate 24 will slide up and down along the first slide rail 23. As the lifting plate 24 moves up and down, the first fixed plate 25 connected to it and the laser welder 26 fixedly connected to one side of the first fixed plate 25 will also adjust their positions up and down in sync, thereby achieving precise adjustment of the height of the laser welder 26 to meet the welding requirements of workpieces of different thicknesses.

[0025] Preferably, the left and right adjustment mechanism includes a drive gearbox 35. The drive gearbox 35 is fixedly connected to the right side of the upper surface of the mounting plate 5. A reduction motor 36 is fixedly connected to one side of the drive gearbox 35. A positioning plate 37 is fixedly connected to one side of the drive gearbox 35. A fourth rotating shaft 38 is movably connected inside the positioning plate 37 and is fixedly connected to the reduction motor 36 via a coupling. A sliding frame 39 is threadedly connected to the outer wall of the fourth rotating shaft 38. An air pump 40 is fixedly connected inside the sliding frame 39. An air rod 41 is fixedly connected to the output end of the upper surface of the air pump 40. Second slide rails 42 are fixedly connected to the left and right sides inside the sliding frame 39. An adjustment plate 43 is fixedly connected to the output end of the upper surface of the air rod 41 and is connected to the second slide rails 42. Clamping plates 44 are fixedly connected to the left and right sides of one side of the adjustment plate 43. When it is necessary to adjust the left and right position of the workpiece or adjust the clamping position, the reduction motor 36 fixed to one side of the drive gearbox 35 is activated. The power generated by the reduction motor 36 is transmitted to the drive gearbox. Inside 35, after being processed by the gearbox, the fourth rotating shaft 38, which extends into and is movably connected to the positioning plate 37, rotates. Since the outer wall of the fourth rotating shaft 38 is threadedly connected to the sliding frame 39, the sliding frame 39 moves left and right along the fourth rotating shaft 38 when the fourth rotating shaft 38 rotates, thereby adjusting the left and right position of the overall clamping mechanism. When it is necessary to adjust the clamping height to accommodate workpieces of different heights, the air pump 40 fixedly connected inside the sliding frame 39 is activated. The air pump 40 drives the air rod 41 fixedly connected to its upper surface output end to extend and retract. Since the output end of the air rod 41 is fixedly connected to the adjusting plate 43, and the adjusting plate 43 is connected to the second slide rail 42 fixed on the left and right sides inside the sliding frame 39, the adjusting plate 43 will slide stably up and down along the second slide rail 42 under the action of the air rod 41. As the adjusting plate 43 moves up and down, the clamping plates 44 fixedly connected to the left and right sides on one side will also adjust their up and down positions synchronously, thereby realizing the clamping operation of workpieces of different heights.

[0026] Preferably, the positioning mechanism includes a positioning frame 27. The positioning frame 27 is fixedly connected to the upper surface of the main body 1. A sliding groove 28 is provided inside the positioning frame 27. A drive motor 29 is fixedly connected to one side of the positioning frame 27. A third rotating shaft 30 is fixedly connected to the output end of one side of the drive motor 29. A second slider 31 is threadedly connected to the outer wall of the third rotating shaft 30. A second fixing plate 32 is fixedly connected to the upper surface of the second slider 31. A second telescopic rod 33 is fixedly connected to the upper surface of the second fixing plate 32. A placement table 34 is fixedly connected to the output end of the upper surface of the second telescopic rod 33. When it is necessary to adjust the position of the workpiece on the placement table 34 for precise docking and welding operations, the drive motor 29 fixed to one side of the positioning frame 27 is activated. The output end of the drive motor 29 will drive the third rotating shaft 30 to start rotating. Since the outer wall of the third rotating shaft 30 is threadedly connected to the second slider 31, and the second slider 31 is located in the sliding groove 28 opened inside the positioning frame 27, the second slider 31 will slide along the sliding groove 28 in the left and right direction during the rotation of the third rotating shaft 30. As the second slider 31 moves left and right, the second fixed plate 32 fixed above it and the second telescopic rod 33 fixed on the upper surface of the second fixed plate 32 will also move left and right synchronously. When it is necessary to adjust the height of the workpiece, the second telescopic rod 33 is controlled to extend and retract, and its output end will drive the placement platform 34 fixed above to move up and down.

[0027] Preferably, two pairs of first telescopic rods 2 are fixedly connected to the lower surface of the main body 1. A support block 3 is fixedly connected to the output end of the lower surface of the first telescopic rod 2. Two pairs of universal wheels 4 are movably connected to the lower surface of the main body 1. When it is necessary to move the equipment to change the working position, the two pairs of first telescopic rods 2 fixedly connected to the lower surface of the main body 1 are controlled to retract, so that the support block 3 connected to the output end of the lower surface of the first telescopic rod 2 is lifted off the ground. At this time, the two pairs of universal wheels 4 movably connected to the lower surface of the main body 1 are in contact with the ground. With the help of the rolling characteristics of the universal wheels 4, the equipment can be easily pushed to the designated position to meet the needs of cross-area operation. When the equipment is moved to the target working position, the first telescopic rod 2 is controlled to extend, pushing the support block 3 to move downward until it is in close contact with the ground. At this time, the universal wheels 4 are lifted off the ground, and the support block 3 is used to provide stable support for the equipment.

[0028] When using this utility model, the equipment is first moved and fixed. When it is necessary to change the work area, the first telescopic rod 2 on the lower surface of the main body 1 is retracted, so that the support block 3 is lifted off the ground. At this time, the caster 4 is in contact with the ground. The rolling characteristics of the caster 4 are used to push the equipment to the target position. After reaching the position, the first telescopic rod 2 is extended, so that the support block 3 is in close contact with the ground and the caster 4 is suspended in the air, so as to achieve stable fixing of the equipment.

[0029] Next, the workpiece is placed and initially positioned. The workpiece to be welded is placed on the placement platform 34 of the positioning mechanism. The drive motor 29 on one side of the positioning frame 27 is started, and its output end drives the third rotating shaft 30 to rotate, causing the threaded second slider 31 to move left and right along the sliding groove 28, thereby driving the second fixed plate 32, the second telescopic rod 33 and the placement platform 34 to move left and right synchronously. At the same time, by controlling the extension and retraction of the second telescopic rod 33, the height of the placement platform 34 is adjusted, and the workpiece is moved to the approximate welding area to complete the initial positioning.

[0030] Then, the left and right adjustment mechanism is activated to precisely clamp and fine-tune the position of the workpiece. The reduction motor 36 is started, and the power is transmitted to the fourth rotating shaft 38 through the drive gearbox 35, causing it to rotate. This drives the threaded sliding frame 39 to move left and right along the fourth rotating shaft 38, adjusting the left and right position of the clamping plate 44. If it is necessary to adjust the clamping height, the air pump 40 inside the sliding frame 39 is started, driving the air rod 41 to extend and retract, causing the adjustment plate 43 to slide up and down along the second slide rail 42, driving the clamping plate 44 to rise and fall synchronously, ultimately achieving stable clamping and precise positioning of the workpiece.

[0031] After the workpiece is positioned, the position of the laser welder 26 is adjusted by the front-back adjustment mechanism and the up-down adjustment mechanism. The drive motor 10 of the front-back adjustment mechanism is started, and its output end drives the first rotating shaft 11 to rotate. Through the transmission of the first pulley 13 and the first belt 14, the first transmission shaft 12 rotates synchronously, thereby driving the first slider 15 to move back and forth along the adjustment frame 7. At this time, the up-down adjustment mechanism connected to the first slider 15 moves back and forth as a whole. When it is necessary to adjust the welding height, the servo motor 18 of the up-down adjustment mechanism is started, and its output end drives the second rotating shaft 19 to rotate. Through the transmission of the second pulley 20 and the second belt 22, the second transmission shaft 21 rotates, causing the lifting plate 24 to slide up and down along the first slide rail 23, driving the laser welder 26 to rise and fall synchronously until the optimal welding position is reached.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A semi-automatic mobile welding apparatus, the semi-automatic mobile welding apparatus comprising: The main body (1) has an mounting plate (5) fixedly connected to its upper surface. The mounting plate (5) is provided with a front-to-back adjustment mechanism, an up-to-down adjustment mechanism and a left-to-right adjustment mechanism from top to bottom. A positioning mechanism is provided on one side of the upper surface of the main body (1) located on the mounting plate (5). The front and rear adjustment mechanism includes a mounting frame (6). A pair of mounting frames (6) are fixedly connected to the left and right sides of the upper surface of the mounting plate (5). An adjustment frame (7) is fixedly connected to the upper surface of the mounting frame (6). A pair of fixing blocks (8) are fixedly connected to the front and rear sides of the adjustment frame (7). A through hole (9) is opened inside the fixing block (8). A drive motor (10) is fixedly connected to the right side of the fixing block (8). A first rotating shaft (11) is fixedly connected to the output end of one side of the drive motor (10). A first transmission shaft (12) is movably connected inside the through hole (9). A first pulley (13) is fixedly connected to the outer wall of the first rotating shaft (11) and the first transmission shaft (12). A first belt (14) is drivenly connected to the outer wall of the pair of first pulleys (13). A first slider (15) is fixedly connected to the outer wall of one side of the first belt (14).

2. A semi-automatic mobile welding apparatus as claimed in claim 1, characterized in that: The up-and-down adjustment mechanism includes a movable plate (16), a movable plate (16) is fixedly connected to one side of the first slider (15), a mounting block (17) is fixedly connected to one side of the movable plate (16), a servo motor (18) is fixedly connected to one side of the upper surface of the mounting block (17), a second rotating shaft (19) is fixedly connected to one side of the output end of the servo motor (18), a set of second pulleys (20) is fixedly connected to the outer wall of the second rotating shaft (19), a second transmission shaft (21) is provided on one side of the movable plate (16), and the second transmission shaft (21) is... 1) The outer wall is fixedly connected to another set of second pulleys (20), and the outer wall of the pair of second pulleys (20) is connected to a second belt (22). The side of the moving plate (16) is fixedly connected to a first slide rail (23), and the outer wall of the first slide rail (23) is slidably connected to a lifting plate (24). The side of the lifting plate (24) is fixedly connected to a first fixed plate (25), and the side of the second drive shaft (21) is connected to the back side of the first fixed plate (25). The side of the first fixed plate (25) is fixedly connected to a laser welder (26).

3. A semi-automatic mobile welding apparatus as claimed in claim 2, wherein: The left and right adjustment mechanism includes a drive gearbox (35). The drive gearbox (35) is fixedly connected to the right side of the upper surface of the mounting plate (5). A geared motor (36) is fixedly connected to one side of the drive gearbox (35). A positioning plate (37) is fixedly connected to one side of the drive gearbox (35). A fourth rotating shaft (38) is movably connected inside the positioning plate (37). The fourth rotating shaft (38) is fixedly connected to the geared motor (36) through a coupling. The outer wall of the fourth rotating shaft (38) A sliding frame (39) is threadedly connected, and an air pump (40) is fixedly connected inside the sliding frame (39). An air rod (41) is fixedly connected to the output end of the upper surface of the air pump (40). A second slide rail (42) is fixedly connected to the left and right sides inside the sliding frame (39). An adjusting plate (43) is fixedly connected to the output end of the upper surface of the air rod (41), and the adjusting plate (43) is connected to the second slide rail (42). A clamping plate (44) is fixedly connected to the left and right sides of one side of the adjusting plate (43).

4. A semi-automatic mobile welding apparatus as claimed in claim 3, wherein: The positioning mechanism includes a positioning frame (27), which is fixedly connected to the upper surface of the main body (1). The positioning frame (27) has a sliding groove (28) inside. A drive motor (29) is fixedly connected to one side of the positioning frame (27). A third rotating shaft (30) is fixedly connected to the output end of one side of the drive motor (29). A second slider (31) is threadedly connected to the outer wall of the third rotating shaft (30). A second fixing plate (32) is fixedly connected to the upper surface of the second slider (31). A second telescopic rod (33) is fixedly connected to the upper surface of the second fixing plate (32). A placement platform (34) is fixedly connected to the output end of the upper surface of the second telescopic rod (33).

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