Precise welding mechanism for metal workpiece machining

Abstract

The invention discloses a precise welding mechanism for metal workpiece machining, and relates to the metal workpiece welding technology. The precise welding mechanism comprises a welding platform and a welding support fixedly installed in the middle of the rear portion of the welding platform; a welding top plate is arranged above the front face of the welding support in a sliding mode, and a welding assembly is fixedly installed on the bottom face of the welding top plate. Butt joint mechanisms are arranged on the left side and the right side of the upper portion of the welding platform correspondingly, each butt joint mechanism comprises a transmission rolling wheel, and the upper portions of the transmission rolling wheels are attached to a workpiece body; scrap removing mechanisms are arranged on the left side and the right side of the upper portion of the welding platform correspondingly, and each scrap removing mechanism comprises a scrap removing sliding plate. According to the precise welding mechanism for metal workpiece machining, through the butt joint platforms and the transmission rollers which are symmetrically distributed, the precise welding mechanism is matched with workpiece bodies of different specifications for butt joint, dust removal and cleaning are conducted on the end face needing to be welded during rotary butt joint, meanwhile, generated smoke dust is sucked during welding operation, and the precision and efficiency of welding operation are improved.

Description

Technical Field

[0001] This invention relates to the field of metal workpiece welding technology, specifically to a precision welding mechanism for metal workpiece processing. Background Technology

[0002] Metal workpiece welding refers to the process of permanently connecting metal workpieces into a whole by heating, pressurizing, or both, to achieve atomic-level bonding. Welding is a type of metal heat treatment and a key step in manufacturing, transforming raw materials into finished products. This process can effectively reduce structural weight and save materials, and is widely used in the manufacture of metal structures such as ships, automobiles, and bridges. The welded structure is usually not disassembled. In order to avoid incomplete welding or detachment of the welded metal workpieces, it is necessary to clean the metal workpieces to prevent metal dust from affecting the weld strength.

[0003] The invention disclosed in CN120816209A is a metal pipe welding device. Through the structural design of the rotating component, the device achieves the function of periodic rotation. After welding is completed, the metal pipe is rotated, and the whole device can rotate at a periodic angle. Welding can be performed while rotating, ensuring the continuity of the welding process, eliminating the need for repeated welding, and improving welding efficiency.

[0004] The invention disclosed in CN119747969A is a metal pipe welding device. This metal pipe welding device achieves full-circumference welding of two pipes with different diameters by precisely controlling the alignment and coaxiality of the pipes and by using a welding torch that can rotate around the connection position of the pipes. This not only improves the welding quality but also significantly increases the welding efficiency.

[0005] However, the welding device for metal workpieces (pipes) disclosed above still has the following problems in actual use: the metal workpiece is rotated by the positioning component to achieve all-round welding operation, but such welding components are difficult to clean the welding end face of the workpiece. Some workpiece end faces have rust and metal powder. If welding is carried out directly without cleaning, it is easy to cause false welding or detachment, which affects the welding strength of the workpiece. At the same time, such positioning components are difficult to adapt to workpieces of different specifications on their own, and manual calibration and adjustment are required frequently during welding operation.

[0006] Therefore, we propose a precision welding mechanism for metal workpiece processing to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a precision welding mechanism for metal workpiece processing. This addresses the problem that existing welding mechanisms use positioning components to rotate metal workpieces to achieve omnidirectional welding operations. However, such welding components are difficult to clean the welding end faces of workpieces. Some workpiece end faces have rust and metal dust, which can easily lead to incomplete welds or weld failures if welding is performed directly without cleaning, thus affecting the welding strength of the workpiece. In addition, such positioning components are difficult to adapt to workpieces of different specifications independently, requiring frequent manual calibration and adjustment during welding operations.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a precision welding mechanism for metal workpiece processing, comprising a welding platform and a welding bracket fixedly installed at the rear center of the welding platform; further comprising: Among them, a welding top plate is slidably installed above the front of the welding bracket, and a welding component is fixedly installed on the bottom surface of the welding top plate. The welding platform is provided with docking mechanisms on both the upper left and right sides, and the docking mechanisms include transmission rollers, with the upper part of the transmission rollers attached to the workpiece body. The welding platform is equipped with chip removal mechanisms on both the upper left and right sides, and the chip removal mechanisms include chip removal slides.

[0009] Preferably, the docking mechanism includes docking screws rotatably installed on the front and rear sides inside the welding platform, and docking platforms are slidably installed on the left and right sides inside the welding platform. The lower end of the docking platform is threaded through the left and right sides of the docking screws, and bearing brackets are fixedly installed on the left and right sides of the top surface of the docking platform.

[0010] Preferably, the docking mechanism includes transmission rollers that are rotatably mounted on the front and rear sides of the support bracket via bearings, and a drive shaft is rotatably mounted on the center position of the lower part of the support bracket via bearings. A drive gear is fixedly mounted on the outer wall of the drive shaft inside the support bracket, and the drive gear is meshed with the drive groove on the outer wall of the transmission rollers on the front and rear sides above.

[0011] Preferably, the docking mechanism includes a docking slide rod, which is fixedly installed on the front and rear sides of the center of the top surface of the docking platform. A positioning arc plate is slidably provided through the upper end of the docking slide rod, and the positioning arc plate and the docking slide rod are connected to each other by a contact spring.

[0012] Preferably, the docking mechanism includes a transmission roller shaft, which is rotatably mounted inside the positioning arc plate via bearings. The positioning arc plate is attached to the upper outer wall of the workpiece body via the internal transmission roller shaft, and the positioning arc plate positions the workpiece body above the front and rear transmission rollers.

[0013] Preferably, the chip removal mechanism includes a positioning slide groove, which is opened on the left and right sides inside the welding platform. The inside of the positioning slide groove is slidably connected to the end of the chip removal slide plate. The chip removal slide plate and the positioning slide groove are connected to each other by an elastic sleeve rod. At the same time, the top center of the chip removal slide plate is rotatably connected to the lower end of the chip removal flip plate by a torsion spring.

[0014] Preferably, the chip removal mechanism includes a chip removal slot formed inside the chip removal flip plate, and the upper middle part of the chip removal flip plate is elastically slidably connected to the top of the chip removal wiping plate, and the lower end of the chip removal wiping plate extends to the bottom of the chip removal flip plate. The chip removal flip plate is attached to the end face of the workpiece body to be welded on the side via a side arm, and the lower end of the chip removal wiping plate is attached to the outer wall of the workpiece body to be welded on the side.

[0015] Preferably, the chip removal mechanism includes a peristaltic positioning frame fixedly installed inside the support bracket, and the peristaltic positioning frame is sleeved and installed outside the inner end of the drive shaft. A peristaltic pressure plate is fixedly provided at equal angles on the outer wall of the inner end of the drive shaft, and a corrugated suction hose is provided between the upper interior of the peristaltic positioning frame and the peristaltic pressure plate.

[0016] Preferably, the chip removal mechanism includes a chip collection cylinder fixedly installed at the inner end of the docking platform, and the chip collection cylinder is connected through the middle of the corrugated extraction hose. The upper end of the corrugated extraction hose is connected through the chip removal slot hole opened inside the chip removal flip plate, and the lower end of the corrugated extraction hose is connected through the interior of the dust purifier.

[0017] Preferably, the chip removal mechanism includes a chip removal flip plate that is vertically distributed in the initial state, used to abut against the end of the workpiece body to be welded, and to adjust and position the workpiece body for installation. The elastic force of the torsion spring at the lower end of the chip removal flip plate is greater than the elastic force of the elastic sleeve rod, so that when the chip removal slide plate moves to the limit position of the positioning slide groove, the chip removal flip plate flips downward to collect the welding fumes.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: This precision welding mechanism for metal workpiece processing, through symmetrically distributed docking platforms and transmission rollers, adapts to workpieces of different specifications for docking, and cleans the end faces to be welded during rotational docking. Simultaneously, it extracts the fumes generated during welding operations, improving the precision and efficiency of the welding operation. The specific details are as follows: 1. By sliding the positioning arc plate connected by the contact spring above the docking slide bar upward, the workpiece body is placed above the front and rear transmission rollers, so that the end of the workpiece body abuts against the side of the chip removal flip plate. Then the contact spring extends and drives the positioning arc plate to descend, and the internal transmission roller shaft fits against the upper outer wall of the workpiece, thus adapting to workpiece bodies of different specifications without the need for frequent manual adjustments.

[0019] Furthermore, the drive shaft inside the support bracket is driven to rotate by a motor. The drive shaft drives the drive gear to mesh with the drive groove on the outer wall of the transmission roller, causing the transmission roller to rotate in the same direction. The transmission roller then drives the workpiece body that is attached above to rotate, thereby facilitating the comprehensiveness of subsequent welding.

[0020] 2. The connecting screw inside the welding platform drives the threaded connecting platform to slide inward synchronously. The moving workpiece body abuts against the chip removal flip plate. The chip removal wiper above it is attached to the outer wall of the end of the workpiece body to be welded. The chip removal flip plate is attached to the end of the workpiece body to be welded and, in coordination with the rotation of the workpiece body, cleans the end to be welded.

[0021] The drive shaft drives the peristaltic pressure plate to rotate inside the peristaltic positioning frame. It squeezes and adheres to the corrugated extraction hose, and compresses and transports the air inside the corrugated extraction hose. The end of the workpiece is cleaned by the chip removal groove connected to the inner end of the corrugated extraction hose, thereby absorbing rust and dust, which are then collected and stored by the chip collection cylinder.

[0022] After the chip removal slide moves to the inner end of the drive groove, it is limited. After the chip removal flip plate is resisted by the workpiece, it rotates from a vertical state to a horizontal state, so that the chip removal groove hole inside is in a vertical state. Then, the docking platforms on the left and right sides drive the ends of the workpiece body to fit together, so that the welding assembly can carry out subsequent welding operations.

[0023] 3. The welding top plate above the welding bracket drives the welding assembly to slide downwards. The welding assembly fits against the ends of the workpiece body on the left and right sides, and works with the rotating workpiece body to achieve a comprehensive welding operation. At the same time, the chip removal groove in a negative pressure state sucks in the welding fumes and transports them to the inside of the connected fume purifier for filtration and purification, thereby improving the precision and efficiency of the welding operation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the structure of the docking platform after it has slid. Figure 3 This is a schematic diagram of the structure for mounting the workpiece body of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a three-dimensional structural schematic diagram of the support bracket of the present invention; Figure 6 This is a schematic diagram of the structure of the positioning groove of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B; Figure 8 This is a schematic diagram of the structure for mounting the transmission rollers of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C; Figure 10 This is a schematic diagram of the structure of the chip removal flipping plate after rotation according to the present invention.

[0025] In the diagram: 1. Welding platform; 2. Welding support; 3. Welding top plate; 4. Welding assembly; 5. Transmission roller; 6. Chip collection cylinder; 7. Chip removal slide plate; 8. Connecting screw; 9. Connecting platform; 10. Bearing support; 11. Drive shaft; 12. Drive gear; 13. Drive groove; 14. Connecting slide bar; 15. Positioning arc plate; 16. Contact spring; 17. Transmission roller shaft; 18. Positioning slide groove; 19. Elastic sleeve rod; 20. Torsion spring; 21. Chip removal flip plate; 22. Chip removal slot hole; 23. Chip removal wiping plate; 24. Creep conveying positioning frame; 25. Creep conveying pressure plate; 26. Corrugated extraction hose; 27. Fume purifier; 28. Workpiece body. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1-10 The present invention provides the following technical solution: Example 1: In order to solve the problems existing in the welding of metal workpieces, this example discloses the following technical solution: a precision welding mechanism for processing metal workpieces, wherein a docking mechanism is provided on both the left and right sides above the welding platform 1, and the docking mechanism includes a transmission roller 5, and the upper part of the transmission roller 5 is attached to the workpiece body 28.

[0028] The docking mechanism includes transmission rollers 5 which are rotatably mounted on the front and rear sides of the support bracket 10 via bearings. A drive shaft 11 is rotatably mounted on the center position of the lower part of the support bracket 10 via bearings. A drive gear 12 is fixedly mounted on the outer wall of the drive shaft 11 inside the support bracket 10. The drive gear 12 is meshed with the drive groove 13 on the outer wall of the transmission rollers 5 on the front and rear sides. The docking mechanism includes a docking slide rod 14, which is fixedly mounted on the front and rear sides of the middle part of the top surface of the docking platform 9. A positioning arc plate 15 is slidably provided through the upper end of the docking slide rod 14. The positioning arc plate 15 and the docking slide rod 14 are connected to each other by a contact spring 16.

[0029] The docking mechanism includes a transmission roller shaft 17, which is rotatably mounted inside the positioning arc plate 15 via bearings. The positioning arc plate 15 is attached to the upper outer wall of the workpiece body 28 via the internal transmission roller shaft 17, and the positioning arc plate 15 positions the workpiece body 28 above the front and rear transmission rollers 5.

[0030] like Figure 6 , Figures 8-9 As shown, when welding is required on the workpiece body 28, the positioning arc plate 15 above the middle of the docking platform 9 is first slid upward so that it moves away from the symmetrically distributed transmission rollers 5. Then, the workpiece body 28 is placed above the symmetrically distributed transmission rollers 5, and the workpiece body 28 is supported by the transmission rollers 5 on the front and rear sides. Then, the positioning arc plate 15 is pulled by the abutment spring 16 on the outer wall of the docking slide rod 14, so that the positioning arc plate 15 slides downward and is attached to the outer wall of the workpiece body 28 by the internal transmission roller shaft 17. This adapts to workpiece bodies 28 of different diameters while avoiding misalignment during welding.

[0031] Furthermore, the drive motor installed above the docking platform 9 drives the drive shaft 11 to rotate. When the drive shaft 11 drives the drive gear 12 inside the bearing bracket 10 to rotate, it meshes with the drive groove 13 opened on the outer wall of the transmission roller 5, causing the transmission rollers 5 on the front and rear sides to rotate in the same direction. The workpiece body 28 that is attached to the transmission roller 5 rotates in the same direction under the pressure of the positioning arc plate 15, so as to improve the overall quality of pipe welding.

[0032] Example 2: To solve the problems existing in the welding of metal workpieces, this example discloses the following technical solution: The chip removal mechanism includes a positioning slide 18, which is opened on the left and right sides inside the welding platform 1. The inside of the positioning slide 18 is slidably connected to the end of the chip removal slide plate 7. The chip removal slide plate 7 and the positioning slide 18 are connected to each other by an elastic sleeve rod 19. At the same time, the middle of the top surface of the chip removal slide plate 7 is rotatably connected to the lower end of the chip removal flip plate 21 by a torsion spring 20. The chip removal mechanism includes a chip removal slot 22 opened in the upper part of the chip removal flip plate 21. The middle of the upper end of the chip removal flip plate 21 is elastically slidably connected to the top of the chip removal wiping plate 23. The lower end of the chip removal wiping plate 23 extends to the lower part of the chip removal flip plate 21. The chip removal flip plate 21 is attached to the end face of the side of the workpiece body 28 to be welded by a side arm. At the same time, the lower end of the chip removal wiping plate 23 is attached to the outer wall of the side of the workpiece body 28 to be welded.

[0033] The chip removal mechanism includes a peristaltic positioning frame 24 fixedly installed inside the support bracket 10, and the peristaltic positioning frame 24 is sleeved and installed outside the inner end of the drive shaft 11. The outer wall of the inner end of the drive shaft 11 is fixedly provided with a peristaltic pressure plate 25 at equal angles. A corrugated extraction hose 26 is provided between the upper part of the peristaltic positioning frame 24 and the peristaltic pressure plate 25. The chip removal mechanism includes a chip collection cylinder 6 fixedly installed inside the docking platform 9. The chip collection cylinder 6 is connected through the middle of the corrugated extraction hose 26. The upper end of the corrugated extraction hose 26 is connected through the chip removal slot 22 opened inside the chip removal flip plate 21. The lower end of the corrugated extraction hose 26 is connected through the interior of the dust purifier 27.

[0034] like Figures 3-7 As shown, the chip removal slides 7 on the left and right sides above the welding platform 1 are connected to the chip removal flip plate 21 by the torsion spring 20, so that the chip removal flip plate 21 is distributed vertically in the initial state, so that the chip removal flip plate 21 can fit against the inner end of the workpiece body 28, thereby limiting the installation position of the workpiece body 28 on the left and right sides and preventing displacement after moving and docking.

[0035] Furthermore, the connecting screw 8 inside the welding platform 1 is arranged in a bidirectional structure. When driven by the motor, the connecting screw 8 drives the threaded connecting platform 9 to slide inward synchronously. The workpiece body 28 above the connecting platform 9 abuts against the chip removal flip plate 21 through its inner end. At this time, the force of the torsion spring 20 at the lower end of the chip removal flip plate 21 is greater than the force of the elastic sleeve rod 19, so that the chip removal flip plate 21 being abutted drives the chip removal slide plate 7 at the lower end to move inside the positioning slide groove 18.

[0036] The lower end of the chip removal wiping plate 23, which is elastically connected to the upper end of the chip removal flipping plate 21, is attached to the outer wall of the end of the workpiece body 28 to be welded. The chip removal flipping plate 21 is attached to the end of the workpiece body 28 to be welded and works in conjunction with the rotating workpiece body 28 so that the chip removal flipping plate 21 and the chip removal wiping plate 23 can clean the dust from the workpiece body 28 to be welded, so as to avoid the adhesion of rust and metal powder, which would affect the weld strength.

[0037] Example 3: In order to solve the problems existing in the welding of metal workpieces, this example discloses the following technical solution, including a welding platform 1 and a welding bracket 2 fixedly installed in the middle of the rear of the welding platform 1; wherein, a welding top plate 3 is slidably arranged above the front of the welding bracket 2, and a welding component 4 is fixedly installed on the bottom surface of the welding top plate 3; the docking mechanism includes a docking screw 8 rotatably installed on the front and rear sides inside the welding platform 1, and docking platforms 9 are slidably installed on the left and right sides inside the welding platform 1, and the lower end of the docking platform 9 is threaded through the left and right sides of the docking screw 8, and a bearing bracket 10 is fixedly installed on the left and right sides of the top surface of the docking platform 9.

[0038] Chip removal mechanisms are provided on both the upper left and right sides of the welding platform 1, and the chip removal mechanisms include chip removal slide plates 7; the chip removal flip plates 21 included in the chip removal mechanism are vertically distributed in the initial state, used to abut against the end of the workpiece body 28 to be welded, and to adjust and position the workpiece body 28 for installation, and the elastic force of the torsion spring 20 at the lower end of the chip removal flip plate 21 is greater than the elastic force of the elastic sleeve rod 19, so that when the chip removal slide plate 7 moves to the limit position of the positioning slide groove 18, the chip removal flip plate 21 flips downward to collect the welding fumes.

[0039] like Figures 1-2 , Figure 10 As shown, the docking platforms 9 on both sides drive the workpiece body 28 to rotate synchronously during the moving tube process. The drive shaft 11 inside the bearing bracket 10 drives the inner end of the creeping pressure plate 25 to rotate inside the creeping positioning frame 24. When the creeping pressure plate 25 rotates to the top, it squeezes the corrugated extraction hose 26 that is attached to the tube, pushing the air inside the corrugated extraction hose 26 to the front end. At this time, the inside of the corrugated extraction hose 26 is in a negative pressure state, and then the air inside the attached workpiece body 28 is sucked in through the through-connected chip removal groove 22, so as to help to suck the cleaned dust into the through-connected chip collection cylinder 6 for storage, so as to avoid dust residue affecting the accuracy of subsequent welding.

[0040] Furthermore, after the chip removal slide plate 7 moves the chip removal flip plate 21 to the inner end of the positioning slide groove 18, the chip removal slide plate 7 is resisted and cannot continue to slide. At this time, the chip removal flip plate 21 is continuously resisted by the docking platform 9, and then flips inward so as to rotate from the vertical state to the horizontal state. At the same time, the chip removal slots 22 opened inside it are distributed in a horizontal upward manner.

[0041] After the docking platforms 9 on both sides move the workpiece body 28 above to a state where the ends are in contact with each other, the welding top plate 3 above the welding bracket 2 drives the welding assembly 4 to slide downward, so that the welding assembly 4 welds the ends of the workpiece body 28 on both sides. During the welding process, the transmission roller 5 drives the workpiece body 28 to rotate at the same speed and in the same direction, thereby improving the comprehensiveness of the welding operation. At the same time, the fumes generated during welding are absorbed by the chip removal slots 22 opened inside the horizontally distributed chip removal flip plate 21, and transported to the inside of the fume purifier 27 through the corrugated extraction hose 26 under negative pressure, thereby improving the accuracy and efficiency of the overall welding operation.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precision welding mechanism for processing metal workpieces, comprising a welding platform (1) and a welding bracket (2) fixedly installed at the rear center of the welding platform (1). Its features are, Also includes: Among them, a welding top plate (3) is slidably arranged above the front of the welding bracket (2), and a welding assembly (4) is fixedly installed on the bottom surface of the welding top plate (3). The welding platform (1) is provided with docking mechanisms on both the upper left and right sides, and the docking mechanisms include transmission rollers (5), and the upper part of the transmission rollers (5) is attached to the workpiece body (28). The welding platform (1) is provided with chip removal mechanisms on both the upper left and right sides, and the chip removal mechanism includes a chip removal slide plate (7).

2. The precision welding mechanism for metal workpiece processing according to claim 1, characterized in that: The docking mechanism includes docking screws (8) rotatably installed on the front and rear sides inside the welding platform (1), and docking platforms (9) are slidably installed on the left and right sides inside the welding platform (1). The lower end of the docking platform (9) is threaded through the left and right sides of the docking screws (8), and the top surface of the docking platform (9) is fixedly installed on the left and right sides of the left and right sides of the left and right sides of the left and right sides of the right and right sides of the right and left sides of the top surface of the docking platform (9).

3. The precision welding mechanism for metal workpiece processing according to claim 2, characterized in that: The docking mechanism includes transmission rollers (5) which are rotatably mounted on the front and rear sides of the support bracket (10) via bearings. A drive shaft (11) is rotatably mounted on the center position of the lower part of the support bracket (10) via bearings. A drive gear (12) is fixedly mounted on the outer wall of the drive shaft (11) inside the support bracket (10). The drive gear (12) is meshed with the drive groove (13) on the outer wall of the transmission rollers (5) on the front and rear sides above.

4. The precision welding mechanism for metal workpiece processing according to claim 3, characterized in that: The docking mechanism includes a docking slide (14), and the docking slide (14) is fixedly installed on the front and rear sides of the top surface of the docking platform (9). The upper end of the docking slide (14) is slidably provided with a positioning arc plate (15), and the positioning arc plate (15) and the docking slide (14) are connected to each other by a contact spring (16).

5. A precision welding mechanism for metal workpiece processing according to claim 4, characterized in that: The docking mechanism includes a transmission roller shaft (17), and the transmission roller shaft (17) is rotatably mounted inside the positioning arc plate (15) through bearings. The positioning arc plate (15) is attached to the upper outer wall of the workpiece body (28) through the internal transmission roller shaft (17), and the positioning arc plate (15) positions the workpiece body (28) above the front and rear transmission rollers (5).

6. The precision welding mechanism for metal workpiece processing according to claim 1, characterized in that: The chip removal mechanism includes a positioning slide (18), which is located on the left and right sides inside the welding platform (1). The inside of the positioning slide (18) is slidably connected to the end of the chip removal slide plate (7). The chip removal slide plate (7) and the positioning slide (18) are connected to each other by an elastic sleeve rod (19). At the same time, the top surface of the chip removal slide plate (7) is rotatably connected to the lower end of the chip removal flip plate (21) by a torsion spring (20).

7. A precision welding mechanism for metal workpiece processing according to claim 6, characterized in that: The chip removal mechanism includes a chip removal slot (22) opened inside the upper part of the chip removal flip plate (21), and the upper middle part of the chip removal flip plate (21) is elastically slidably connected to the top of the chip removal wiping plate (23), and the lower end of the chip removal wiping plate (23) extends to the lower part of the chip removal flip plate (21). The chip removal flip plate (21) is attached to the end face of the workpiece body (28) to be welded by the side arm, and the lower end of the chip removal wiping plate (23) is attached to the outer wall of the workpiece body (28) to be welded.

8. The precision welding mechanism for metal workpiece processing according to claim 7, characterized in that: The chip removal mechanism includes a creeping positioning frame (24) fixedly installed inside the support bracket (10), and the creeping positioning frame (24) is sleeved and installed outside the inner end of the drive shaft (11). The outer wall of the inner end of the drive shaft (11) is fixedly provided with a creeping pressure plate (25) at equal angles. A corrugated suction hose (26) is provided between the upper part of the creeping positioning frame (24) and the creeping pressure plate (25).

9. A precision welding mechanism for metal workpiece processing according to claim 8, characterized in that: The chip removal mechanism includes a chip collection cylinder (6) fixedly installed at the inner end of the docking platform (9), and the chip collection cylinder (6) is connected through the middle of the corrugated extraction hose (26). The upper end of the corrugated extraction hose (26) is connected through the chip removal slot (22) opened inside the chip removal flip plate (21), and the lower end of the corrugated extraction hose (26) is connected through the interior of the dust purifier (27).

10. A precision welding mechanism for metal workpiece processing according to claim 7, characterized in that: The chip removal mechanism includes a chip removal flip plate (21) that is vertically distributed in the initial state. It is used to abut against the end of the workpiece body (28) that needs to be welded and to adjust and position the workpiece body (28) for installation. The elastic force of the torsion spring (20) at the lower end of the chip removal flip plate (21) is greater than the elastic force of the elastic sleeve rod (19). When the chip removal slide plate (7) moves to the limit position of the positioning slide groove (18), the chip removal flip plate (21) flips downward to collect the welding fumes.

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