A multi-position clamping robot welding tool with repair welding effect

Abstract

The present invention discloses a multi-position clamping robot welding tool with a repair welding effect, which relates to the field of welding processing, including a machine body and a welding mechanism, wherein the welding mechanism is arranged inside the machine body to perform welding processing on a workpiece, a repair welding mechanism is arranged at the right front of the welding mechanism to perform repair welding on the product processed by the welding mechanism, and a mounting disk is arranged below the welding mechanism and the repair welding mechanism, and a support shaft is fixed in the middle of the mounting disk, and the mounting disk is rotatably connected to the machine body through the support shaft, and a first motor is connected above the mounting disk to control the rotation of the mounting disk. The multi-position clamping robot welding tool with a repair welding effect can drive the movable ring to rotate through the rotation of the connecting ring, thereby driving the welding product to rotate, facilitating the adjustment of the welding position, and improving the welding uniformity and flexibility, and the connecting ring and the transmission wheel are frictionally driven, and the power transmission can be realized after the two are in contact.

Description

Technical Field

[0001] The invention relates to the technical field of welding processing, in particular to a multi-position clamping robot welding tool with a repair welding effect. Background Art

[0002] As a common product processing method, welding can be used for processing various types of profiles and pipes, and has a wide range of applications in industrial production. During welding, the product can be welded by welding tooling. The product needs to be positioned during welding to ensure its own stability during welding. The application number is CN201822169297.0. An automated robot welding tooling disclosed on November 19, 2019, includes a platform frame, which is composed of four groups of cross bars, four groups of vertical bars and a platform plate. The platform frame is integrally cast, and a control cabinet is fixedly installed on one side of the top of the platform plate. A control panel is provided on one side of the control cabinet, and parameter setting keys are provided on the control panel. Two groups of support columns are symmetrically arranged at the center of the top of the platform plate, and the connecting line between the centers of the support columns is perpendicular to the control cabinet. Electric push rods are fixedly installed on the opposite sides of the support columns, and clamps are fixedly installed at the ends of the electric push rods. Workpieces are clamped between the clamps. A concave frame is fixedly connected to the top center of the platform plate, and a cylinder is fixedly installed at the bottom center of the horizontal part of the concave frame. A welding rod is fixedly connected to the end of the cylinder. Gun, two groups of card slots are symmetrically opened on the top of the platform plate, and a protective baffle is clamped inside the card slot, and the protective baffle is located between the vertical part of the concave frame and the support column; the application number is CN202121839779.8, and a multifunctional tumble arm frame robot welding tooling disclosed on January 11, 2022 includes a fixed frame and a positioning mechanism, a groove is opened on the top of the fixed frame, a circular plate is slidably installed on the inner wall of the groove, a motor is installed at the bottom of the circular plate, a limit plate is provided on the top of the circular plate, and two first card slots are symmetrically provided on the top of the limit plate , the tops of the inner walls of the two first card slots are each provided with a first threaded groove, the inner wall of the first card slot is installed with a first card seat, the top of the first card seat is provided with a second card slot, the top of the inner wall of the second card slot is provided with a through hole, a first screw rod adapted to the first threaded groove is installed inside the through hole, and a positioning rod adapted to the second card slot is arranged above the first card seat; the tooling has a rotation function, which is convenient for the robot to weld the workpiece at multiple angles, and at the same time has a double clamping mechanism, which can ensure the quality of the tooling during welding and improve the practicality of the device;

[0003] After the current welding tooling has been used to weld a product, there may be parts or processes on the product that cannot be welded in one go, and different welding heads need to be used for subsequent repair welding, which increases the subsequent workload. During welding, the loading and unloading of the product is performed under the welding mechanism, which poses certain operational risks and reduces the continuous welding efficiency of the product and the ease of use of the device. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-position clamping robot welding tool with a repair welding effect, so as to solve the problem raised in the above background technology that after the current welding tool is used to weld the product, the product may have parts or processes that cannot be welded in one time, and different welding heads need to be used for repair welding later, which increases the subsequent workload. In addition, during welding, the loading and unloading of the product are operated under the welding mechanism, which poses certain operational risks.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-position clamping robot welding tool with a repair welding effect, comprising a machine body and a welding mechanism, wherein the welding mechanism is arranged inside the machine body to perform welding processing on the workpiece, a repair welding mechanism is arranged at the right front of the welding mechanism to perform repair welding on the product processed by the welding mechanism, and a mounting plate is arranged below the welding mechanism and the repair welding mechanism, and a support shaft is fixed to the middle of the mounting plate, and the mounting plate is rotatably connected to the machine body through the support shaft, a first motor is connected above the mounting plate to control the rotation of the mounting plate, and an active ring is arranged inside the mounting plate, a support plate is fixed to the bottom of the active ring, and a support plate is provided for the product through the active ring A placement space is provided, and the movable ring is located below the welding mechanism. The movable ring is distributed at equal angles in a circle with the center of the mounting disk in the mounting disk. When the mounting disk rotates, the movable ring is transferred from below the welding mechanism to below the repair welding mechanism. A clamping mechanism is arranged on the inner side of the movable ring to provide a clamping and locking effect for the welding product. A connecting ring is connected to the outer side of the movable ring, and a rotational connection is formed between the connecting ring and the mounting disk. The rotation of the connecting ring drives the movable ring to rotate to adjust the welding position. A rotational connection is formed between the movable ring and the connecting ring, and a rotational connection is formed between the movable ring and the connecting ring. A rotational connection is formed between the movable ring and the connecting ring, and a rotational control mechanism is arranged on the outer side of the movable ring. The rotation of the movable ring below the repair welding mechanism is controlled by the rotational control mechanism to adjust the repair welding angle.

[0006] To further optimize the technical solution, the clamping mechanism includes a clamping block, a first spring, a control rope and a pulling mechanism;

[0007] The clamping blocks are distributed at equal angles in a circle with the center of the movable circle as a circle, and the clamping blocks are located above the support plate, and a horizontal sliding structure is formed between the clamping blocks and the support plate;

[0008] A first spring, fixed to the outer side of the clamping block to provide thrust for the clamping block;

[0009] A control rope, fixed to the outside of the clamping block;

[0010] The pulling mechanism is connected to the control rope to control the movement of the clamping block.

[0011] To further optimize the technical solution, the pulling mechanism includes a first magnetic ring and a second magnetic ring;

[0012] The first magnetic ring is fixed to the lower end of the control rope, and the first magnetic ring is located inside and between the movable rings to form an up-and-down sliding structure;

[0013] The second magnetic ring is fixed on the front side of the machine body, and the second magnetic ring and the first magnetic ring have opposite magnetic poles, so that they generate mutual attraction.

[0014] To further optimize the technical solution, the lower end of the connecting ring is designed as an enlarged structure, and a ball is arranged on the outside of the connecting ring, and a driving mechanism is arranged on the outside of the connecting ring to control the rotation of the connecting ring.

[0015] To further optimize the technical solution, the driving mechanism includes a transmission wheel and a third motor;

[0016] The transmission wheel is arranged inside the machine body, and two sets of transmission wheels are arranged, respectively fitting with the connection ring under the welding mechanism and the connection ring under the repair welding mechanism;

[0017] The third motor is connected to the transmission wheel to control the rotation of the transmission wheel.

[0018] To further optimize the technical solution, the outer side of the transmission wheel is rotatably connected to a movable block, and a horizontal sliding structure is formed between the movable block and the machine body, and a second spring is fixed to the outer end of the movable block to provide thrust for the movable block, so that the transmission wheel and the connecting ring remain in close contact.

[0019] To further optimize the technical solution, the rotation control mechanism includes a connecting shaft, a first magnetic block, a first attraction block, a mounting plate, a rotating shaft and a second motor;

[0020] The connecting shaft is fixed on the outer side of the movable ring, and the movable ring is rotatably connected with the connecting shaft and the connecting ring;

[0021] A first magnetic block is arranged on the outside of the connecting shaft, and the first magnetic block is fixed on the surface of the movable ring;

[0022] A first attraction block is arranged on the right side of the mounting plate and provides an attraction effect to the first magnetic block on the surface of the movable ring below the repair welding mechanism;

[0023] A mounting plate, fixed to the right side of the first attraction block;

[0024] The rotating shaft is fixed on the right side of the mounting plate, and the horizontal center line of the rotating shaft and the horizontal center line of the connecting shaft are arranged to coincide with each other;

[0025] The second motor is connected to the rotating shaft to control the rotation of the rotating shaft.

[0026] To further optimize the technical solution, a rotation locking mechanism is provided below the connecting shaft to lock the rotation of the movable ring.

[0027] To further optimize the technical solution, the rotation locking mechanism includes a locking block, a third spring, a second magnetic block and a second attraction block;

[0028] A locking block is arranged below the connecting shaft, and an up-and-down sliding structure is formed between the locking block and the connecting ring;

[0029] A third spring is arranged on the outer side of the locking block to provide an upward thrust for the locking block;

[0030] A second magnetic block is fixed below the locking block;

[0031] The second attraction block is fixed inside the machine body and is located below the repair welding mechanism to provide attraction for the second magnetic block. The second attraction block is designed in an annular structure.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The setting of the repair welding mechanism can realize multi-station processing of the product. The product welded by the welding mechanism can be moved to the repair welding mechanism for repair welding again, thereby improving the welding quality of the product and reducing the subsequent workload;

[0034] The rotation of the mounting plate can realize automatic loading of the product, so that the product can pass through the welding mechanism and the repair welding mechanism in turn, which improves the automation of product welding and avoids loading and unloading of the product at the welding mechanism, making the operation safer;

[0035] The clamping block can provide a clamping and limiting effect on the product, so that it remains stable during the subsequent processing, and the clamping block can move synchronously to achieve clamping and unlocking of the product. The product will be automatically unlocked after it is transferred out of the machine body, which improves the convenience of subsequent loading and unloading;

[0036] The rotation of the connecting ring can drive the movable ring to rotate, thereby driving the welding product to rotate, making it convenient to adjust the welding position, improving the welding uniformity and flexibility, and the connecting ring and the transmission wheel are driven by friction, and the power transmission can be realized after the two are in contact;

[0037] By setting the connecting shaft, the movable ring can be flipped in the connecting ring, so as to adjust the angle of the product and facilitate the repair welding of the product. The movable ring will be limited when it is not moved to the repair welding mechanism, so that the connecting shaft cannot rotate, thereby ensuring the stability of the movable ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0039] Figure 2 It is a front structural schematic diagram of the present invention;

[0040] Figure 3 This is a schematic diagram of the top view of the mounting plate of the present invention;

[0041] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting ring of the present invention;

[0042] Figure 5 It is a schematic diagram of the three-dimensional structure of the movable ring of the present invention;

[0043] Figure 6 This is a schematic diagram of the main cross-sectional structure of the active ring of the present invention;

[0044] Figure 7 It is a schematic diagram of the cross-sectional structure of the machine body of the present invention;

[0045] Figure 8 This is a schematic diagram of the main cross-sectional structure of the mounting plate of the present invention;

[0046] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at a in the middle;

[0047] Fig.10 It is a schematic diagram of the internal structure of the movable block of the present invention;

[0048] Fig.11 It is a schematic diagram of the main cross-sectional structure of the connecting ring of the present invention.

[0049] In the figure: 1. body; 2. welding mechanism; 3. repair welding mechanism; 4. mounting plate; 5. movable ring; 6. connecting ring; 7. supporting shaft; 8. first motor; 9. supporting plate; 10. clamping block; 11. first spring; 12. control rope; 13. first magnetic ring; 14. second magnetic ring; 15. connecting shaft; 16. first magnetic block; 17. first attraction block; 18. mounting plate; 19. rotating shaft; 20. second motor; 21. ball bearing; 22. movable block; 23. second spring; 24. transmission wheel; 25. third motor; 26. locking block; 27. third spring; 28. second magnetic block; 29. ​​second attraction block. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1-Figure 11, the present invention provides the following technical solutions: a multi-position clamping robot welding tool with a repair welding effect, comprising a body 1 and a welding mechanism 2, the welding mechanism 2 is arranged inside the body 1 to perform welding processing on the workpiece; Example

[0052] The invention provides a technical solution, which discloses that a repair welding mechanism 3 is arranged at the right front of a welding mechanism 2, and the product processed by the welding mechanism 2 is repaired, and a mounting plate 4 is arranged below the welding mechanism 2 and the repair welding mechanism 3, and a support shaft 7 is fixed in the middle of the mounting plate 4, and the mounting plate 4 is rotatably connected to the machine body 1 through the support shaft 7, and a first motor 8 is connected above the mounting plate 4 to control the rotation of the mounting plate 4, and a movable ring 5 is arranged inside the mounting plate 4, and a support plate 9 is fixed at the bottom of the movable ring 5, and a placement space is provided for the product through the movable ring 5, and the movable ring 5 is located below the welding mechanism 2, and the movable ring 5 is inside the mounting plate 4. The center of the mounting disk 4 is a circular equiangular distribution. When the mounting disk 4 rotates, the movable ring 5 is transferred from the bottom of the welding mechanism 2 to the bottom of the repair welding mechanism 3. A clamping mechanism is provided on the inner side of the movable ring 5 to provide a clamping and locking effect for the welding product. The outer side of the movable ring 5 is connected with a connecting ring 6, and a rotation connection is formed between the connecting ring 6 and the mounting disk 4. The rotation of the connecting ring 6 drives the movable ring 5 to rotate to adjust the welding position. The movable ring 5 and the connecting ring 6 form a rotation connection, and a rotation control mechanism is provided on the outer side of the movable ring 5. The movable ring 5 is controlled to rotate under the repair welding mechanism 3 by the rotation control mechanism to adjust the repair welding angle.

[0053] When in use, the product to be processed can be placed in the movable circle 5 located on the front side of the machine body 1, and then the first motor 8 is used to control the installation disk 4 and the support shaft 7 to rotate, so as to drive the product to move and send it to the bottom of the welding mechanism 2 for welding processing. After welding is completed, the installation disk 4 is continued to be controlled to rotate, and the product is sent to the bottom of the repair welding mechanism 3 for repair welding. After the repair welding is completed, the product can be taken out again with the rotation of the installation disk 4, and then the product can be taken out, and the product to be processed can continue to be placed. Example

[0054] On the basis of the first embodiment, a clamping mechanism is disclosed, which includes a clamping block 10, a first spring 11, a control rope 12 and a pulling mechanism. The clamping block 10 is distributed at equal angles in a circle with the center of the movable ring 5 as a circle, and the clamping block 10 is located above the support plate 9, and a horizontal sliding structure is formed between the clamping block 10 and the support plate 9. The first spring 11 is fixed to the outside of the clamping block 10 to provide thrust for the clamping block 10. The control rope 12 is fixed to the outside of the clamping block 10. The pulling mechanism is connected to the control rope 12 to control the movement of the clamping block 10. The pulling mechanism includes a first magnetic ring 13 and a second magnetic ring 14. The first magnetic ring 13 is fixed to the lower end of the control rope 12, and the first magnetic ring 13 is located inside the movable ring 5 and between the movable ring 5 to form an up and down sliding structure. The second magnetic ring 14 is fixed to the front side of the body 1, and the second magnetic ring 14 and the first The magnetic rings 13 have opposite magnetic poles, which generate mutual attraction. The lower end of the connecting ring 6 is designed in an enlarged structure, and a ball 21 is arranged on the outer side of the connecting ring 6, and a driving mechanism is arranged on the outer side of the connecting ring 6 to control the rotation of the connecting ring 6. The driving mechanism includes a transmission wheel 24 and a third motor 25. The transmission wheel 24 is arranged inside the body 1, and the transmission wheel 24 is provided with two groups, which are respectively fitted with the connecting ring 6 under the welding mechanism 2 and the connecting ring 6 under the repair welding mechanism 3. The third motor 25 is connected to the transmission wheel 24 to control the rotation of the transmission wheel 24. The outer side of the transmission wheel 24 is rotatably connected with a movable block 22, and a horizontal sliding structure is formed between the movable block 22 and the body 1, and a second spring 23 is fixed to the outer end of the movable block 22 to provide thrust for the movable block 22, so that the transmission wheel 24 and the connecting ring 6 are kept in close contact.

[0055] When the movable circle 5 is located at the front side of the machine body 1, the first magnetic ring 13 and the second magnetic ring 14 are opposite to each other, and the first magnetic ring 13 is attracted to pull the control rope 12 to drive the clamping block 10 to move, so that it remains in an open state. After the product is placed, the movable circle 5 moves to the inside of the machine body 1, and the first magnetic ring 13 and the second magnetic ring 14 are staggered. The attraction of the first magnetic ring 13 is released, and the first spring 11 will push the clamping block 10 to move, clamp the product to a limit position, so that it remains stable during subsequent processing, and when the movable circle 5 moves to the bottom of the welding mechanism 2 and the repair welding mechanism 3, the transmission wheel 24 will contact the connecting circle 6, and the second spring 23 pushes the movable block 22 to keep the transmission wheel 24 and the connecting circle 6 in close contact, and the transmission wheel 24 is driven to rotate by the third motor 25, so that the transmission wheel 24 can drive the connecting circle 6 to rotate, so that the movable circle 5 can rotate synchronously, drive the product to move, and improve the uniformity and flexibility of subsequent welding. Example

[0056] On the basis of the first embodiment, a rotation control mechanism is disclosed, which includes a connecting shaft 15, a first magnetic block 16, a first attraction block 17, a mounting plate 18, a rotating shaft 19 and a second motor 20. The connecting shaft 15 is fixed to the outside of the movable ring 5, and the movable ring 5 is rotatably connected through the connecting shaft 15 and the connecting ring 6. The first magnetic block 16 is arranged on the outside of the connecting shaft 15, and the first magnetic block 16 is fixed to the surface of the movable ring 5. The first attraction block 17 is arranged on the right side of the mounting plate 4 to provide an attraction effect to the first magnetic block 16 on the surface of the movable ring 5 below the repair welding mechanism 3. The mounting plate 18 is fixed to the right side of the first attraction block 17. The rotating shaft 19 is fixed to the right side of the mounting plate 18, and the horizontal center line of the rotating shaft 19 and the horizontal center line of the connecting shaft 15 are mutually Overlapping arrangement, the second motor 20 is connected to the rotating shaft 19 to control the rotation of the rotating shaft 19, a rotation locking mechanism is arranged below the connecting shaft 15 to lock the rotation of the movable ring 5, the rotation locking mechanism includes a locking block 26, a third spring 27, a second magnetic block 28 and a second attraction block 29, the locking block 26 is arranged below the connecting shaft 15, and an up and down sliding structure is formed between the locking block 26 and the connecting ring 6, the third spring 27 is arranged on the outer side of the locking block 26 to provide an upward thrust for the locking block 26, the second magnetic block 28 is fixed below the locking block 26, the second attraction block 29 is fixed inside the machine body 1, and the second attraction block 29 is located below the repair welding mechanism 3 to provide attraction to the second magnetic block 28, and the second attraction block 29 is designed in an annular structure;

[0057] When the movable ring 5 has not moved to the repair welding mechanism 3, the locking block 26 is connected to the connecting shaft 15 to limit the rotation of the connecting shaft 15. When the movable ring 5 moves to the bottom of the repair welding mechanism 3, the second attraction block 29 attracts the second magnetic block 28, driving the locking block 26 to move, and releasing the connection between the locking block 26 and the connecting shaft 15. At the same time, the first magnetic block 16 and the first attraction block 17 are relative to each other, and then the second motor 20 drives the rotating shaft 19 and the mounting plate 18 to rotate, driving the first attraction block 17 to move, so that the first attraction block 17 controls the movement of the first magnetic block 16 through the attraction between the first magnetic block 16, and the first magnetic block 16 drives the movable ring 5 and the connecting shaft 15 to rotate, adjusts the repair welding angle, and makes the repair welding more flexible.

[0058] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-position clamping robot welding tool with a repair welding effect, comprising a body (1) and a welding mechanism (2), wherein the welding mechanism (2) is arranged inside the body (1) to perform welding processing on a workpiece; characterized in that: A repair welding mechanism (3) is arranged at the right front of the welding mechanism (2) for repair welding the product processed by the welding mechanism (2), and a mounting plate (4) is arranged below the welding mechanism (2) and the repair welding mechanism (3), and a support shaft (7) is fixed in the middle of the mounting plate (4), and the mounting plate (4) is rotatably connected to the machine body (1) through the support shaft (7), and a first motor (8) is connected above the mounting plate (4) to control the rotation of the mounting plate (4), and a movable ring (5) is arranged inside the mounting plate (4), and a support plate (9) is fixed at the bottom of the movable ring (5), and a placement space for the product is provided through the movable ring (5), and the movable ring (5) is located below the welding mechanism (2), and the movable ring (5) is arranged on the mounting plate (4). The movable ring (5) is distributed at equal angles in a circle with the center of the mounting disk (4) as the center. When the mounting disk (4) rotates, the movable ring (5) is transferred from the bottom of the welding mechanism (2) to the bottom of the repair welding mechanism (3). A clamping mechanism is arranged on the inner side of the movable ring (5) to provide a clamping and locking effect on the welding product. The outer side of the movable ring (5) is connected to a connecting ring (6), and a rotation connection is formed between the connecting ring (6) and the mounting disk (4). The rotation of the connecting ring (6) drives the movable ring (5) to rotate to adjust the welding position. The movable ring (5) and the connecting ring (6) are rotationally connected. A rotation control mechanism is arranged on the outer side of the movable ring (5). The rotation of the movable ring (5) is controlled by the rotation control mechanism to rotate the movable ring (5) under the repair welding mechanism (3) to adjust the repair welding angle.

2. The multi-position clamping robot welding tool with repair welding effect according to claim 1 is characterized in that: The clamping mechanism comprises a clamping block (10), a first spring (11), a control rope (12) and a pulling mechanism; The clamping blocks (10) are distributed at equal angles in a circle with the center of the movable ring (5), and the clamping blocks (10) are located above the support plate (9), and a horizontal sliding structure is formed between the clamping blocks (10) and the support plate (9); A first spring (11) is fixed to the outer side of the clamping block (10) to provide thrust for the clamping block (10); A control rope (12) fixed to the outside of the clamping block (10); The pulling mechanism is connected to the control rope (12) to control the movement of the clamping block (10).

3. The multi-position clamping robot welding tool with repair welding effect according to claim 2 is characterized in that: The pulling mechanism comprises a first magnetic ring (13) and a second magnetic ring (14); A first magnetic ring (13) is fixed to the lower end of the control rope (12), and the first magnetic ring (13) is located inside the movable ring (5) and between the movable rings (5) to form an up-and-down sliding structure; The second magnetic ring (14) is fixed on the front side of the machine body (1), and the second magnetic ring (14) and the first magnetic ring (13) have opposite magnetic poles, so that they generate mutual attraction.

4. The multi-position clamping robot welding tool with repair welding effect according to claim 1 is characterized in that: The lower end of the connecting ring (6) is designed to be an enlarged structure, and a ball (21) is arranged on the outside of the connecting ring (6), and a driving mechanism is arranged on the outside of the connecting ring (6) to control the rotation of the connecting ring (6).

5. The multi-position clamping robot welding tool with repair welding effect according to claim 4 is characterized in that: The driving mechanism comprises a transmission wheel (24) and a third motor (25); A transmission wheel (24) is arranged inside the machine body (1), and two sets of transmission wheels (24) are provided, which are respectively fitted with a connection ring (6) below the welding mechanism (2) and a connection ring (6) below the repair welding mechanism (3); The third motor (25) is connected to the transmission wheel (24) to control the rotation of the transmission wheel (24).

6. The multi-position clamping robot welding tool with repair welding effect according to claim 5 is characterized in that: The outer side of the transmission wheel (24) is rotatably connected to a movable block (22), and a horizontal sliding structure is formed between the movable block (22) and the machine body (1). A second spring (23) is fixed to the outer end of the movable block (22) to provide thrust for the movable block (22) so that the transmission wheel (24) and the connecting ring (6) are kept in close contact.

7. The multi-position clamping robot welding tool with repair welding effect according to claim 1 is characterized in that: The rotation control mechanism comprises a connecting shaft (15), a first magnetic block (16), a first attraction block (17), a mounting plate (18), a rotating shaft (19) and a second motor (20); A connecting shaft (15) is fixed on the outside of the movable ring (5), and the movable ring (5) is rotatably connected to the connecting shaft (15) and the connecting ring (6); A first magnetic block (16) is arranged on the outside of the connecting shaft (15), and the first magnetic block (16) is fixed on the surface of the movable ring (5); A first attraction block (17) is arranged on the right side of the mounting plate (4) and provides an attraction effect on the first magnetic block (16) on the surface of the movable ring (5) below the repair welding mechanism (3); A mounting plate (18) fixed to the right side of the first attraction block (17); The rotating shaft (19) is fixed on the right side of the mounting plate (18), and the horizontal center line of the rotating shaft (19) and the horizontal center line of the connecting shaft (15) are arranged to overlap with each other; The second motor (20) is connected to the rotating shaft (19) to control the rotation of the rotating shaft (19).

8. The multi-position clamping robot welding tool with repair welding effect according to claim 7 is characterized in that: A rotation locking mechanism is provided below the connecting shaft (15) to lock the rotation of the movable ring (5).

9. The multi-position clamping robot welding tool with repair welding effect according to claim 8, characterized in that: The rotation locking mechanism comprises a locking block (26), a third spring (27), a second magnetic block (28) and a second attraction block (29); A locking block (26) is arranged below the connecting shaft (15), and an up-and-down sliding structure is formed between the locking block (26) and the connecting ring (6); A third spring (27), arranged on the outer side of the locking block (26) to provide an upward thrust for the locking block (26); A second magnetic block (28) is fixed below the locking block (26); The second attraction block (29) is fixed inside the machine body (1), and the second attraction block (29) is located below the repair welding mechanism (3) to provide attraction for the second magnetic block (28), and the second attraction block (29) is designed in a ring structure.

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