Rotary metal welding tool

Abstract

The invention discloses a rotary metal welding tool, and relates to the technical field of metal welding, the rotary metal welding tool comprises a conveying belt for conveying workpieces and a support frame on the conveying belt, a rotating plate is rotatably arranged on the support frame, two sides of the rotating plate are respectively provided with a bearing mechanism, and the bearing mechanisms are used for bearing metal pipes to be welded; the bearing mechanism is further provided with two clamping assemblies. A welding mechanism is arranged in the rotating plate, the bearing mechanism comprises an arc-shaped plate arranged on the rotating plate, and a bearing space used for bearing a metal pipe is formed in the arc-shaped plate; a linkage assembly is further arranged in the bearing mechanism. According to the rotary metal welding tool, automatic tight connection of the contact positions of two metal pipes can be achieved, passive triggering is achieved, stability and efficiency are achieved, welding is convenient, the clamping assemblies conduct passive driving clamping through placement of the metal pipes, the metal pipes can be automatically disengaged after welding, the clamping efficiency is greatly improved, and the labor intensity of workers is lowered. And the welding efficiency of the metal pipe is integrally improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal welding, and particularly relates to a rotary metal welding tooling. Background Art

[0002] With the rapid development of society, the welding field has also developed rapidly. Welding technology plays an important role in various fields. Its main function is to connect two or more metal workpieces for application. Among them, the welding of metal pipes is widely used. In industries such as oil, chemical, and natural gas transportation, it can be used to connect various fluid transportation pipelines, equipment, and containers. It not only has good sealing performance but also can ensure the safe and efficient transportation of fluids. Therefore, the welding of metal pipes is an important part of the welding field.

[0003] In the prior art, when welding metal pipes, it is necessary to first butt the two metal pipes and then weld the connection position of the metal pipes through a welding device. However, in the actual operation of this welding method, it is necessary to clamp it through a clamping mechanism and then weld it through a welding mechanism. There are also some that use a manipulator in the prior art to butt the two metal pipes and then clamp and align them before welding. No matter which welding method is used, not only the cost is high, but also there are multiple processes such as alignment, clamping, welding, and placement in the whole welding process, resulting in a waste of time and the overall welding efficiency is not high. Summary of the Invention

[0004] The purpose of the present invention is to provide a rotary metal welding tooling to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A rotary metal welding tooling includes a conveyor belt for conveying workpieces, a support frame on the conveyor belt, a rotating plate rotatably arranged on the support frame, and a bearing mechanism is arranged on both sides of the rotating plate for bearing the metal pipes to be welded, and two clamping components are further arranged on the bearing mechanism;

[0007] A welding mechanism is arranged inside the rotating plate, and the welding mechanism is arranged at the position between the two clamping components;

[0008] The bearing mechanism includes an arc-shaped plate arranged on the rotating plate, and a bearing space for bearing the metal pipe is formed on the arc-shaped plate;

[0009] A linkage component is further arranged in the bearing mechanism. When the metal pipe is located in the bearing space, the clamping component is passively unlocked through the linkage mechanism to clamp the metal pipe, and after welding is completed, the welded part automatically falls off.

[0010] As a further preferred solution of the present invention, it further includes a driving component arranged on the rotating plate. During the rotation stroke of the carrying mechanism, the metal tube is passively driven to rotate by the driving component, so that the welding mechanism welds the connection position of the two metal tubes.

[0011] As a further preferred solution of the present invention, the clamping component includes a sliding block slidably arranged on the arc-shaped plate, and a clamping block is rotatably arranged on the sliding block. The clamping block is adapted to the inner diameter of the metal tube.

[0012] As a further preferred solution of the present invention, a rotating rod is also rotatably arranged between the arc-shaped plates, and a guiding block is arranged on the sliding block. The guiding block is sleeved on the rotating rod.

[0013] As a further preferred solution of the present invention, a second elastic member is sleeved outside the rotating rod. One end of the second elastic member is connected to the guiding block, and the other end is connected to the arc-shaped plate. Under the elastic force of the second elastic member, the guiding block has a tendency to move in the direction towards the welding mechanism.

[0014] As a further preferred solution of the present invention, the linkage component includes an elastic column slidably arranged on the arc-shaped plate, and a transmission rod is also slidably arranged on the arc-shaped plate. An inclined block adapted to the elastic column is arranged on the transmission rod. One end of the arc-shaped plate is in contact with the inclined block. During the downward pressing process of the arc-shaped plate, the transmission rod is triggered to move by the arc-shaped plate.

[0015] As a further preferred solution of the present invention, the linkage component further includes a locking buckle slidably arranged on the arc-shaped plate. One end of the locking buckle is rounded and protrudes from the arc-shaped plate and is inserted into a locking groove opened on the guiding block to lock the guiding block and the sliding block. A guide post is fixedly arranged at one end of the transmission rod, and the guide post is located in a limiting groove opened on the locking buckle. When the transmission rod slides, the locking buckle is driven to contract into the arc-shaped plate by the guide post.

[0016] As a further preferred solution of the present invention, the driving component includes a rotating ring rotatably arranged on the rotating plate, and a transmission column is fixedly arranged at one end of the clamping block. The transmission column can axially slide along the rotating ring, and the rotating ring can drive the transmission column to rotate circumferentially through a limiting key.

[0017] As a further preferred solution of the present invention, a first pulling rope is also wound around the rotating ring, and a movable block is also slidably arranged on the side wall of the rotating plate. One end of the first pulling rope is fixedly connected to the rotating ring, and the other end is fixedly connected to the guiding block;

[0018] It further includes a partition assembly arranged on the support frame. During the rotation stroke of the rotating plate, it partitions the movable block and drives the rotating ring to rotate through the first pulling rope, so that the rotating ring rotates.

[0019] As a further preferred solution of the present invention, the partition assembly includes an unlocking block and a partition block slidably arranged on the support frame, and further includes a driving ring rotatably arranged on the support frame. The driving ring is movably connected to the unlocking block and the partition block respectively through the column.

[0020] In the above technical solution, the beneficial effects of a rotary metal welding tool provided by the present invention are as follows:

[0021] Through the provided bearing mechanism and the cooperating clamping assembly, the present invention can passively clamp two metal pipes to be welded. During the passive clamping process, the ends of the two metal pipes are brought into contact, which can not only achieve automatic and tight connection at the contact position of the two metal pipes, but also be passively triggered, stable and efficient, facilitating welding. Moreover, the clamping assembly is passively driven to clamp by the placement of the metal pipe, and after welding, the metal pipe can be automatically disengaged, greatly improving the clamping efficiency and overall improving the welding efficiency of the metal pipe.

[0022] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present disclosure.

[0023] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the whole provided by the embodiment of the present invention;

[0026] Figure 2 It is a schematic structural diagram of the rotating plate and the clamping assembly provided by the embodiment of the present invention

[0027] Figure 3 It is a schematic enlarged structural diagram at A provided by the embodiment of the present invention;

[0028] Figure 4 It is a schematic structural diagram of the support frame provided by the embodiment of the present invention;

[0029] Figure 5 Schematic diagram of each structure within the bearing space provided by the embodiment of the present invention;

[0030] Figure 6 Schematic diagram of the clamping assembly provided by the embodiment of the present invention when clamping a metal tube;

[0031] Figure 7 Schematic diagram of the partition block, unlocking block, and driving ring provided by the embodiment of the present invention;

[0032] Figure 8 Schematic diagram of the linkage assembly provided by the embodiment of the present invention;

[0033] Figure 9 Cross-sectional structure schematic diagram of the linkage assembly provided by the embodiment of the present invention;

[0034] Figure 10 Schematic diagram of the clamping block and the guiding block provided by the embodiment of the present invention;

[0035] Figure 11 Cross-sectional structure schematic diagram of the rotating turntable and the limiting key provided by the embodiment of the present invention;

[0036] Figure 12 Schematic diagram of the sliding block and the second elastic member provided by the embodiment of the present invention.

[0037] Explanation of reference numerals:

[0038] 1, conveyor belt; 2, support frame; 3, rotating plate; 31, rotating rod; 311, second elastic member; 3101, spiral groove; 32, rotating ring; 33, welding head; 4, sliding block; 41, clamping block; 411, transmission column; 42, guiding block; 421, fixed column; 5, first pulling rope; 51, second pulling rope; 52, limiting roller; 53, movable block; 301, arc-shaped sliding groove; 302, arc-shaped plate; 6, driving ring; 61, unlocking block; 62, partition block; 6201, avoidance groove, 63, blocking column; 7, elastic column; 71, inclined block; 72, transmission rod; 721, guide post; 73, locking buckle; 731, first elastic member; 7301, limiting groove. Detailed implementation manners

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0040] Please refer to FIGS. 1 - 12. A rotary metal welding tooling includes a conveyor belt 1 for conveying workpieces, a support frame 2 on the conveyor belt 1, a rotating plate 3 rotatably arranged on the support frame 2, and a bearing mechanism is arranged on both sides of the rotating plate 3 for bearing the metal pipes to be welded. Two clamping assemblies are further arranged on the bearing mechanism;

[0041] A welding mechanism is arranged inside the rotating plate 3, and the welding mechanism is arranged at the middle position between the two clamping assemblies; The bearing mechanism includes an arc-shaped plate 302 arranged on the rotating plate 3, and a bearing space for bearing the metal pipes is formed on the arc-shaped plate 302; Specifically, the welding head 33 of the welding mechanism is at the middle position at the bottom of the bearing space, the bottom of the arc-shaped plate 302 is in an open state, and the welding head 33 can contact the connection position of the two metal pipes in the bearing space

[0042] A linkage assembly is further arranged in the bearing mechanism. When the metal pipe is in the bearing space, the clamping assembly is passively unlocked through the linkage mechanism to clamp the metal pipe, and after welding is completed, the welded part automatically falls off.

[0043] Specifically, the bearing space formed in the bearing mechanism is adapted to the size of the metal pipe to be borne. The clamping assemblies are arranged on both sides of the bearing mechanism. During the passive clamping process, the two metal pipes are clamped by the clamping assemblies, and the ends of the two metal pipes are brought into contact, which can not only achieve a tight connection at the contact position of the two metal pipes, but also be passively triggered, stable and efficient, facilitating welding. Moreover, the clamping assembly is passively driven to clamp by the placement of the metal pipe, greatly improving the clamping efficiency and overall improving the welding efficiency of the metal pipe.

[0044] Furthermore, a driving assembly is arranged on the rotating plate 3. During the rotation stroke of the bearing mechanism, the metal pipe is passively driven to rotate by the driving assembly, so that the welding mechanism welds the connection position of the two metal pipes. Specifically, through the arranged driving assembly in the present invention and then in cooperation with the bearing mechanism and the rotating plate 3, it can achieve rotary welding of the connection of the metal pipes during the rotation and conveying of the rotating plate 3, greatly improving the welding efficiency.

[0045] Furthermore, the clamping assembly includes a sliding block 4 slidably arranged on the arc-shaped plate 302, and a clamping block 41 is rotatably arranged on the sliding block 4. The clamping block 41 is adapted to the inner diameter of the metal pipe.

[0046] In the further provided embodiment of the present invention, a rotating rod 31 is further rotatably arranged between the arc-shaped plates 302, and a guiding block 42 is arranged on the sliding block 4. The guiding block 42 is sleeved on the rotating rod 31. Through the arrangement of the arc-shaped plate 302, the guiding block 42 and the rotating rod 31, the stable sliding of the clamping block 41 can be realized.

[0047] In a further embodiment provided by the present invention, a second elastic member 311 is sleeved outside the rotating rod 31. One end of the second elastic member 311 is connected to the guiding block 42, and the other end is connected to the arc-shaped plate 302. Under the elastic force of the second elastic member 311, the guiding block 42 has a tendency to move in the direction towards the welding mechanism.

[0048] In another embodiment provided by the present invention, the linkage assembly includes an elastic column 7 slidably disposed on the arc-shaped plate 302. A transmission rod 72 is also slidably disposed on the arc-shaped plate 302, and an inclined block 71 adapted to the elastic column 7 is provided on the transmission rod 72. One end of the arc-shaped plate 302 contacts the inclined block 71, and the movement of the transmission rod 72 is triggered by the arc-shaped plate 302 during the downward pressing of the arc-shaped plate 302. Specifically, the elastic column 7 provided in the present application has two prominent effects. One is as a component for unlocking the linkage assembly, which can achieve passive unlocking when the metal tube is placed. The other is to support the metal tube so that the metal tube does not fit with the arc-shaped plate 302, keeping the metal tube in a suspended state, that is, it can make the position of the metal tube adapted to the clamping block 41, greatly improving the functionality of the elastic column 7.

[0049] In a further embodiment provided by the present invention, the linkage assembly further includes a locking buckle 73 slidably disposed on the arc-shaped plate 302. One end of the locking buckle 73 is rounded and protrudes from the arc-shaped plate 302 and is inserted into a locking groove formed on the guiding block 42 to lock the guiding block 42 and the sliding block 4. A guide post 721 is fixedly provided at one end of the transmission rod 72, and the guide post 721 is located in a limiting groove 7301 formed on the locking buckle 73. When the transmission rod 72 slides, the locking buckle 73 is driven by the guide post 721 to contract into the arc-shaped plate 302. Specifically, to ensure that the locking buckle 73 pops out again after contraction, a first elastic member 731 is provided on one side of the locking buckle 73, and the other side of the first elastic member 731 abuts against the groove of the arc-shaped plate 302, and the elastic force can drive the locking buckle 73 to pop out.

[0050] In an embodiment further provided by the present invention, the driving component includes a rotating ring 32 rotatably arranged on the rotating plate 3, and a transmission column 411 is fixedly arranged at one end of the clamping block 41. The transmission can axially slide along the rotating ring 32, and the rotating ring 32 can drive the transmission column 411 to rotate circumferentially through a limit key. Specifically, when the rotating ring 32 rotates, it drives the transmission column 411 to rotate synchronously, that is, it can drive the clamped metal pipes to rotate synchronously, so that the welding mechanism can perform circumferential welding on the connection position of the two metal pipes, improving the welding efficiency. A torsion spring is also arranged on the rotating ring 32, and its elastic force enables the rotating ring 32 to have the ability to rotate back after being pulled and rotated by the first pulling rope 5. The setting of the torsion spring is a well-known technical means in the art, so it is not shown in the text and will not be elaborated too much.

[0051] In an embodiment further provided by the present invention, the first pulling rope 5 is also wound around the rotating ring 32, and a movable block 53 is also slidably arranged on the side wall of the rotating plate 3. One end of the first pulling rope 5 is fixedly connected to the rotating ring 32, and the other end is fixedly connected to the guiding block 42;

[0052] It further includes a partition component arranged on the support frame 2. During the rotation stroke of the rotating plate 3, it partitions the movable block 53 and drives the rotating ring 32 to rotate through the first pulling rope 5, so that the rotating ring 32 rotates.

[0053] In an embodiment further provided by the present invention, the partition component includes an unlocking block and a partition block 62 slidably arranged on the support frame 2, and further includes a driving ring 6 rotatably arranged on the support frame 2. The driving ring 6 is movably connected to the unlocking block and the partition block 62 through sliding rollers respectively.

[0054] Specifically, the surface of the unlocking block is chamfered so that when the sliding roller passes through the unlocking block, it can squeeze the unlocking block. The position of the unlocking block is Figure 7For example, it is set on the right side so that the sliding roller can unlock the blocking block 62 when the rotating plate 3 is not in the vertical position. A torsion spring is provided on the axis where the driving ring 6 rotates relative to the rotating plate 3, and its elastic force can make the blocking block 62 protrude towards the rotating plate 3. Thus, in the natural state, the blocking block 62 is located outside the rotating plate 3. Moreover, an avoidance groove is provided on the blocking block 62, and a limiting roller 52 is rotatably provided on the rotating plate 3. The first pull rope 5 is connected to the movable block 53 after contacting the limiting roller 52, which can play a role in guiding the first pull rope 5. During the rotation of the rotating plate 3, the limiting roller 52 gradually contacts the unlocking block, then squeezes and slides inside the unlocking block support frame 2, and then drives the blocking block 62 to move towards the outside of the support frame 2 through the rotation of the driving ring 6, so that the movable block 53 gradually reaches the position of the avoidance groove, that is, the blocking can be released. Then the movable block 53 slides along the arc-shaped chute 301, so that the movable block 53 is located at the initial position, and the first pull rope 5 is wound around the rotating ring 32.

[0055] Furthermore, in order to facilitate the recovery of the clamping assembly after clamping, a second pull rope 51 is provided on the movable block 53, and the other end of the second pull rope 51 is also connected to the movable block 53. That is, during the rotation of the rotating plate 3, the two clamping assemblies of the device can be driven to release the clamping, and the two clamping blocks 41 can be driven to gradually separate from the metal tube and release the clamping. Then, specifically, guide rollers are respectively provided at the positions where the first pull rope 5 and the second pull rope 51 change directions along their passing routes to facilitate the smooth sliding of the pull ropes. That is, through the cooperation of the movable block 53, the first pull rope 5 and the second pull rope 51 provided in this application, not only can the rotation of the rotating ring 32 be driven to realize the passive rotation of the metal tube, but also the two clamping blocks 41 can be pulled.

[0056] Specifically, in order to facilitate the synchronous sliding effect of the two oppositely arranged clamping blocks 41, a spiral groove 3101 is provided on the rotating rod 31, and a fixing column 421 is provided on the guide block 42. The fixing column 421 is located in the spiral groove 3101. After the clamping block 41 is unlocked, during the movement under the elastic force of the second elastic member 311, the rotation of the rotating rod 31 can be driven through the movement of the fixing column 421 in the spiral groove 3101. The spiral directions of the spiral grooves 3101 where the two clamping blocks 41 are located are opposite. That is, during the rotation of the rotating rod 31, the two clamping blocks 41 can be ensured to slide synchronously through the action of the fixing column 421. Moreover, the above structure also has another prominent effect. Through the action of the fixing column 421 and the spiral groove 3101, the movement speed of the clamping block 41 can be slowed down, that is, the impact on the metal tube caused by the too-fast clamping of the two clamping blocks 41 due to the elastic force of the second elastic member 311 can be greatly reduced. The overall cooperation is orderly and the mobility is high. Not only a large amount of driving cost is saved, but also the device can operate stably.

[0057] In the process of using the present invention, first, two metal tubes are respectively placed in the bearing space formed by the arc-shaped plate 302. Then, the metal tubes contact the elastic columns 7. Due to the self-weight of the metal tubes, the elastic columns 7 are extruded to move downward. Then, during the downward movement of the elastic columns 7, the lower ends thereof abut against the inclined blocks 71. Then, the inclined blocks 71 drive the transmission rods 72 and the connected guide columns 721 to move towards the locking buckle 73. Then, through the limitation of the guide columns 721 and the limiting slots 7301, the locking buckle 73 contracts into the arc-shaped plate 302, that is, the locking buckle 73 disengages from the locking slot on the sliding block 4. Then, the clamping block 41 is unlocked and restricted, and moves towards the middle position of the bearing space under the elastic force of the second elastic member 311. Then, the movement of the fixing column 421 in the spiral groove 3101 drives the rotating rod 31 to rotate. The two clamping blocks 41 can ensure the synchronous sliding of the two clamping blocks 41 through the action of the fixing column 421. Finally, the clamping blocks 41 move and are inserted into the two metal tubes, and the two metal tubes are squeezed together. At this time, the rotation continues, and then the welding mechanism starts to operate to weld the connection position of the two metal tubes;

[0058] During the movement of the rotating plate 3, since the movable block 53 is blocked by the blocking block 62, and then during the continuous rotation of the rotating plate 3, the movable block 53 does not move. Then, under the limitation of the limiting roller 52, the movable block 53 pulls the first pulling rope 5 and the second pulling rope 51 to move. The length of the second pulling rope 51 excluding the length wound around the rotating ring 32 is greater than the length of the first pulling rope 5. Then, the first pulling rope 5 pulls the rotating ring 32 to rotate, that is, drives the connected sliding block 4 and the clamping block 41 to rotate, so as to realize the rotation of the two metal pipes, enabling the welding mechanism to perform comprehensive welding on the metal pipes. After the rotating plate 3 undergoes a displacement at one end, the clamping block 41 rotates one circle. Then, the rotating plate 3 continues to rotate, that is, continuously pulls the first pulling rope 5 and the second pulling rope 51. At this time, the second pulling rope 51 is tightened and continuously pulls the connected guide block 42, and then drives the connected sliding block 4 and the clamping block 41 to move towards the direction close to the support frame 2, that is, no longer clamps the metal pipes. When the rotating plate 3 rotates to be inclined downward, the metal pipes automatically fall onto the conveyor belt 1, and the rotating plate 3 continues to rotate, continuously pulling the first pulling rope 5 and the second pulling rope 51. Then, the second pulling rope 51 continuously drives the connected guide block 42 to slide, and finally makes the guide block 42 move to the initial position, that is, the locking groove on the guide block 42 corresponds to the locking block, and the locking block no longer receives the pressure of the metal pipe and is inserted into the locking groove again under the elastic force of the first elastic member 731. At the same time, the limiting roller 52 presses the unlocking block, then moves inward, and drives the driving ring 6 to rotate along its rotating shaft, that is, drives the connected blocking block 62 to move towards the direction of the movable block 53. The movable block 53 gradually moves to the position of the avoidance groove and no longer blocks the movable block 53. Then, under the action of the torsion spring of the rotating ring 32, the rotating ring 32 rotates, driving the second pulling rope 51 to wind around the rotating ring 32, and then making the movable block 53 return to the initial position again. Then, with the continuous rotation of the rotating plate 3, when the bearing space is horizontally upward, two metal pipes are placed again, and then the clamping, rotation and other steps are carried out again according to the above steps, so that the welding operation of the metal pipes to be welded can be continuously carried out without stopping the machine;

[0059] Through the above structural settings, the present application can realize passive clamping during the rotation of the rotating plate 3, rotary welding. Then, after the two welded metal pipes are automatically separated, each structure is passively restored to the initial position. It can realize the automation and continuous progress of the welding of the two metal pipes, which can not only improve the contact tightness between the two metal pipes during welding, but also realize the automatic rotary welding of the metal pipes, greatly improving the welding quality and welding efficiency.

[0060] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rotary metal welding tool, comprising a conveyor belt (1) for conveying workpieces, a support frame (2) on the conveyor belt (1), characterized in that: A rotating plate (3) is rotatably arranged on the support frame (2), and a bearing mechanism is arranged on both sides of the rotating plate (3) for bearing the metal pipe to be welded, and two clamping assemblies are also arranged on the bearing mechanism; A welding mechanism is arranged inside the rotating plate (3), and the welding mechanism is arranged at a position between the two clamping assemblies; The bearing mechanism comprises an arc-shaped plate (302) arranged on the rotating plate (3), wherein a bearing space for bearing the metal pipe is formed on the arc-shaped plate (302); A linkage assembly is also provided in the bearing mechanism. When the metal tube is located in the bearing space, the linkage mechanism is used to passively unlock the clamping assembly to clamp the metal tube, and after welding is completed, the welded part automatically falls off.

2. A rotary metal welding tool according to claim 1, characterized in that: It also comprises a driving assembly arranged on the rotating plate (3), wherein the bearing mechanism passively drives the metal pipe to rotate through the driving assembly during the rotating stroke, so that the welding mechanism welds the connection position of the two metal pipes.

3. A rotary metal welding tool according to claim 2, characterized in that: The clamping assembly comprises a sliding block (4) slidably arranged on the arc-shaped plate (302), and a clamping block (41) is rotatably arranged on the sliding block (4), and the clamping block (41) is adapted to the inner diameter of the metal pipe.

4. A rotary metal welding tool according to claim 3, characterized in that: A rotating rod (31) is rotatably arranged between the arc-shaped plates (302), and a guide block (42) is arranged on the sliding block (4), and the guide block (42) is sleeved on the rotating rod (31).

5. A rotary metal welding tool according to claim 4, characterized in that: A second elastic member (311) is sleeved on the outside of the rotating rod (31), one end of the second elastic member (311) is connected to the guide block (42), and the other end is connected to the arc plate (302), and under the elastic force of the second elastic member (311), the guide block (42) has a tendency to move in the direction of the welding mechanism.

6. The rotary metal welding tool according to claim 3, characterized in that: The linkage assembly comprises an elastic column (7) slidably arranged on an arc-shaped plate (302), and the arc-shaped plate (302) is also slidably arranged with a transmission rod (72), and the transmission rod (72) is provided with an inclined block (71) adapted to the elastic column (7), one end of the arc-shaped plate (302) is in contact with the inclined block (71), and the arc-shaped plate (302) triggers the transmission rod (72) to move during the downward pressing process of the arc-shaped plate (302).

7. A rotary metal welding tool according to claim 6, characterized in that: The linkage assembly also includes a locking buckle (73) slidably arranged on the arc plate (302), one end of the locking buckle (73) is rounded and protrudes from the arc plate (302), and is inserted into a locking groove provided on the guide block (42) to lock the guide block (42) and the sliding block (4), one end of the transmission rod (72) is fixedly provided with a guide column (721), and the guide column (721) is located in a limiting groove (7301) provided on the locking buckle (73), and when the transmission rod (72) slides, the locking buckle (73) is driven by the guide column (721) to retract into the arc plate (302).

8. The rotary metal welding tool according to claim 4, characterized in that: The driving assembly comprises a rotating ring (32) rotatably arranged on a rotating plate (3), and a transmission column (411) is fixedly arranged at one end of a clamping block (41), the transmission can slide axially along the rotating ring (32), and the rotating ring (32) can drive the transmission column (411) to rotate circumferentially through a limit key.

9. The rotary metal welding tool according to claim 8, characterized in that: A first pull rope (5) is also wound around the rotating ring (32), and a movable block (53) is slidably arranged on the side wall of the rotating plate (3), one end of the first pull rope (5) is fixedly connected to the rotating ring (32), and the other end is fixedly connected to the guide block (42); It also includes a blocking component arranged on the support frame (2) to block the movable block (53) during the rotation of the rotating plate (3) and to drive the rotating ring (32) to rotate via the first pull rope (5), so that the rotating ring (32) rotates.

10. The rotary metal welding tool according to claim 9, characterized in that: The barrier assembly comprises an unlocking block and a barrier block (62) slidably arranged on a support frame (2), and also comprises a driving ring (6) rotatably arranged on the support frame (2), wherein the driving ring (6) is movably connected to the unlocking block and the barrier block (62) respectively through a column.

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