Circumferential welding equipment with multi-axis linkage performance

Abstract

The utility model relates to the technical field of welding equipment, in particular to circumference welding equipment with multi-axis linkage performance, which comprises a workbench, a workpiece translation mechanism and a welding gun adjusting mechanism, the workpiece translation mechanism is perpendicular to the welding gun adjusting mechanism, and the welding gun adjusting mechanism comprises a sliding component and a movable welding gun connecting block. A height-adjustable supporting assembly is arranged on the workpiece translation mechanism in a sliding mode, the supporting assembly comprises a workpiece pitching mechanism and a workpiece rotating mechanism, and the power output end of the workpiece pitching mechanism is connected with the workpiece rotating mechanism. The workpiece rotating mechanism comprises a second speed reducer and a detachable workpiece mounting assembly connected to the power output end of the second speed reducer, the workpiece mounting assembly comprises a connecting flange detachably connected to the power output end of the second speed reducer, and a workpiece chuck is arranged on the connecting flange. The welding equipment in the scheme can meet the requirements of different welding angles and welding processes of workpieces, and can be suitable for welding of non-whole-circumference workpieces.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, and specifically provides a circumferential welding equipment with multi-axis linkage performance. Background Art

[0002] With the widespread application and rapid development of mechanical equipment, the requirements for the processing quality and structural strength of equipment parts, especially welded parts, are becoming higher and higher. Circular welding, as a welding technology, is mainly used for 360-degree continuous welding of cylindrical or similar-shaped workpieces. Circular welding technology is valued for its high precision, high efficiency and high degree of automation, and is suitable for various industrial fields such as automobiles and medical technology.

[0003] Normally, when performing circumferential welding, the cost of manual welding of workpieces is relatively low, but the processing consistency is poor, and it is easy to produce welding defects such as pores, slag inclusions, incomplete penetration and cracks. Once these defects appear in the welding, the entire component will be directly scrapped. In order to solve the above-mentioned problems of manual welding, the conventional method is to introduce general welding equipment, such as using a welding manipulator to achieve welding of the workpiece. When using a manipulator for welding, the workpiece must be fixed first, and then the manipulator drives the welding gun to weld according to a given path. This method has high welding accuracy and good process, but the purchase cost of the equipment is high, and full-time personnel are required to write and plan the manipulator movement path. There are also disadvantages such as complex maintenance, large space occupation, and high energy consumption. It is not suitable for large-scale workpiece operations with consistent welding forms.

[0004] Therefore, for welding workpieces with a single welding trajectory and large batches, it is often necessary to design special circumferential welding equipment to improve the welding quality of the workpiece and reduce the welding cost. In the prior art, the following patents involve circumferential welding equipment:

[0005] 1. The patent document with publication number "CN205733325U" and name "Automatic Circumferential Brazing Welding Equipment for Tubes" has a welding gun in which a driving member drives a rotating shaft to rotate, so that the welding gun can rotate 360 ​​degrees at a constant speed. It is more suitable for welding tube parts. This method can achieve higher welding accuracy, but the welding gun and workpiece are difficult to adjust. It is not suitable for welding circumferential parts of different sizes, especially large-sized circumferential parts.

[0006] 2. The patent document with publication number "CN105149804A" and name "Pneumatic Circumferential Welding Equipment" stipulates that the welding gun in this solution is fixed on an adjustment mechanism that can adjust the position in a translational manner. The feeding and retreating of the clamping mechanism in the welding gun are driven by a pneumatic control device to slide on a linear slide. This equipment is more suitable for welding thin-walled circular parts and can achieve higher production efficiency and better welding quality. However, in this solution, the workpiece is arranged horizontally and the inclination angle cannot be adjusted. It is only suitable for workpieces with a small difference in outer diameter, and is difficult to be applied to the welding of circular workpieces with a large difference in outer diameter, and has a limited scope of application.

[0007] In summary, how to design a circular welding equipment that can quickly adjust the welding position and meet the requirements of different welding parts is a problem that needs to be solved urgently. Utility Model Content

[0008] In order to solve the above problems, the utility model provides a circular welding device with multi-axis linkage performance, which can realize the welding requirements of circular workpieces of various specifications through pitch, rotation and translation mechanisms, can quickly adjust the welding position, effectively reduce the size of the welding gun mechanism and its auxiliary equipment, and make the welding equipment more compact and energy-saving.

[0009] The utility model provides a circular welding device with multi-axis linkage performance, specifically comprising a workbench and a workpiece translation mechanism and a welding gun adjustment mechanism arranged on the workbench, the workpiece translation mechanism and the welding gun adjustment mechanism are arranged vertically, the welding gun adjustment mechanism comprises a sliding assembly, the sliding assembly is connected with a welding gun shaft, the welding gun shaft is provided with a welding gun connecting block, and the welding gun connecting block can rotate and lift on the welding gun shaft, and the welding gun connecting block is connected to the welding gun shaft through a locking piece; a height-adjustable support assembly is slidably arranged on the workpiece translation mechanism, the support assembly comprises a workpiece pitch mechanism and a workpiece rotation mechanism, and the power output end of the workpiece pitch mechanism is connected to the workpiece rotation mechanism; the workpiece rotation mechanism comprises a reducer 2 and a detachable workpiece mounting assembly connected to the power output end of the reducer 2, the workpiece pitch mechanism comprises a reducer 1, the power output shaft of the reducer 1 is fixedly connected to the workpiece rotation mechanism and thereby drives the workpiece rotation mechanism and the workpiece mounting assembly to perform pitch movement.

[0010] Furthermore, the sliding assembly includes a sliding groove connected to the workbench and a welding gun slider located in the sliding groove. A bracket thread is provided on the welding gun rod near the welding gun slider, and a slider fastening bolt located on the welding gun rod is threadedly connected to the bracket thread.

[0011] Furthermore, the welding gun connecting block is sleeved on the welding gun shaft, and the locking part is a connecting bolt 1. When the position of the welding gun connecting block on the welding gun shaft is adjusted, the welding gun connecting block and the welding gun shaft are connected and locked by the connecting bolt 1; the welding gun connecting block is connected to the welding gun by at least one connecting bolt 2; the connecting bolt 1 and the connecting bolt 2 are respectively located on both sides of the welding gun connecting block.

[0012] Furthermore, the second reducer is driven to rotate by a driving motor; the workpiece mounting assembly includes a connecting flange detachably connected to the power output end of the second reducer, and a workpiece chuck is arranged on the connecting flange.

[0013] Furthermore, the workpiece pitch mechanism also includes a brake clip in frictional contact with the power output shaft.

[0014] Furthermore, the second reducer includes a shell, and a reducer connecting plate and a bearing connecting plate are respectively provided at both side ends of the shell, and the power output shaft is fixedly connected to the reducer connecting plate; a rotating shaft assembly is coaxially provided on the bearing connecting plate with the power output shaft.

[0015] Furthermore, the workpiece translation mechanism includes a sliding rail located on the workbench and a sliding rail connecting plate slidably connected to the sliding rail; the support assembly is arranged on the sliding rail connecting plate, and the support assembly includes a steel bracket group 1 located between the workpiece rotation mechanism and the sliding rail connecting plate and a steel bracket group 2 located between the workpiece pitch mechanism and the sliding rail connecting plate, and the steel bracket group 1 and the steel bracket group 2 are arranged in sequence along the direction of movement of the sliding rail connecting plate.

[0016] Furthermore, both steel bracket group one and steel bracket group two are formed by stacking and connecting a plurality of steel brackets; the rotating shaft assembly includes a bearing seat arranged on the uppermost steel bracket in steel bracket group one, and the rotating shaft is supported in the middle of the bearing seat.

[0017] Furthermore, the workpiece translation mechanism includes a cylinder connected to the workbench and a piston rod connecting frame connected to the slide rail connecting plate, and the piston rod of the cylinder is linked to the slide rail connecting plate through the piston rod connecting frame; a plurality of track sliders matching the sliding rail are evenly arranged at the lower end of the slide rail connecting plate, and a cover plate is also provided at the lower end of the slide rail connecting plate, and the piston rod connecting frame is located between the cover plate and the piston rod of the cylinder.

[0018] Furthermore, a receiving hole parallel to the sliding groove is opened on the workbench, and a welding slag groove is arranged in the receiving hole. When the workpiece is installed on the workpiece chuck, the workpiece is located above the welding slag groove; the slider fastening bolt, connecting bolt one and connecting bolt two are all butterfly bolts.

[0019] Compared with the prior art, the utility model can achieve the following beneficial effects: the circular welding equipment in the present scheme can adjust the welding position of the welding gun through the welding gun adjustment mechanism, realize the translation of the welding workpiece through the workpiece translation mechanism, realize the rotation of the welding workpiece through the welding rotation mechanism, and can adjust the welding speed. The pitch position and pitch angle of the welding rotation mechanism can be adjusted according to the welding requirements through the welding pitch mechanism, so as to adjust the pitch angle of the welding workpiece connected to the welding rotation mechanism. The equipment in the present scheme can also control the welding feed amount to realize multiple-circle continuous circular welding. Compared with the welding equipment in the prior art, the circular welding equipment is smaller in size, easier to operate, lower in cost, better in workpiece welding process, and more convenient in equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the circumferential welding equipment provided according to an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a workbench in a circumferential welding device provided according to an embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of a welding gun adjustment structure in a circumferential welding device provided according to an embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of a workpiece rotation mechanism and a workpiece pitch mechanism in a circular welding device provided according to an embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of a workpiece translation mechanism provided according to an embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of a horizontal circumferential welding state provided according to an embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of a circumferential seam welding state with an inclined angle provided according to an embodiment of the utility model;

[0027] Figure 8 It is a schematic diagram of the end face circumferential welding state provided according to an embodiment of the utility model;

[0028] Fig. 9 This is a schematic diagram of a workpiece reaching a limit position state according to an embodiment of the utility model;

[0029] Fig.10 It is a schematic diagram of the initial position of the circumferential welding device when the workpiece is not installed according to an embodiment of the utility model.

[0030] The accompanying drawings include: workbench 1, welding gun adjustment mechanism 2, workpiece 3, workpiece pitch mechanism 4, workpiece translation mechanism 5, workpiece rotation mechanism 6, workbench bracket 11, workbench panel 12, welding slag trough 13, track support platform 14, sliding track 15, slide rail connecting plate 16, steel bracket 17, connecting bottom plate 18, sliding groove 21, fastening bolt 22, welding gun rod 23, welding gun connecting block 24, welding gun 25, connecting bolt one 26, connecting bolt two 27, welding gun slider 28, reducer one 41, rotating shaft 42, bearing seat 43, bearing connecting plate 44, reducer connecting plate 45, brake clip 46, handle 47, power output shaft 48, cylinder 51, track slider 52, cylinder connecting frame 53, piston rod connecting frame 54, cover plate 55, travel switch 56, piston rod 57, reducer two 61, drive motor 62, connecting flange 63, workpiece chuck 64, fastening screw 65. DETAILED DESCRIPTION

[0031] In the following, reference will be made to the Figure 1-10 Describe the embodiment of the utility model. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 1-10 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation on the present invention.

[0033] A circular welding device with multi-axis linkage performance, such as Figure 1 As shown, it includes a workbench 1 and a workpiece translation mechanism 5 and a welding gun adjustment mechanism 2 arranged on the workbench 1. The workpiece translation mechanism 5 is arranged vertically to the welding gun adjustment mechanism 2 as a whole. A height-adjustable support assembly is slidably arranged on the workpiece translation mechanism 5. The support assembly includes a workpiece pitch mechanism 4 and a workpiece rotation mechanism 6. The power output end of the workpiece pitch mechanism 4 is connected to the workpiece rotation mechanism 6. The circular workpiece 3 is connected to the workpiece rotation mechanism 6. The workpiece translation mechanism 5 can drive the workpiece 3 to move horizontally to realize the control of the welding feed amount under the multi-turn welding process. At the same time, by controlling the rotation speed and angle of the workpiece rotation mechanism 6 and adjusting the inclination angle of the workpiece 3 through the workpiece pitch mechanism 4, the control of different welding speeds and circular welding angles can be realized, and it can be applicable to the welding between non-circular workpieces 3.

[0034] like Figure 1 , Figure 3As shown, the welding gun adjustment mechanism 2 includes a sliding assembly and a movable welding gun connecting block 24 located at the upper end of the sliding assembly. The sliding assembly is connected to a welding gun shaft 23. The welding gun connecting block 24 is arranged on the welding gun shaft 23. The welding gun connecting block 24 can rotate and lift on the welding gun shaft 23. The welding gun adjustment mechanism 2 can realize the position adjustment functions of translation, lifting, rotation, etc. of the welding gun 25. The welding gun 25 is located above the weld. The sliding assembly includes a sliding groove 21 connected to the workbench 1 and a welding gun slider 28 located in the sliding groove 21. The sliding groove 21 is a concave sliding groove structure. The welding gun slider 28 is connected to a welding gun rod 23, and the welding gun rod 23 is welded to the welding gun slider 28. A bracket thread is provided on the welding gun rod 23 near the welding gun slider 28, and a slider fastening bolt 22 located on the welding gun rod 23 is threadedly connected to the bracket thread. The welding gun slider 28 is fastened in the concave sliding groove 21 by the slider fastening bolt 22. The slider fastening bolt 22 is a butterfly bolt structure, and its head is designed to be butterfly-shaped for manual tightening and loosening, which can increase the lateral force surface, make manual tightening more efficient, and facilitate the disassembly and maintenance of components.

[0035] like Figure 3 As shown, the welding gun connecting block 24 is sleeved on the welding gun shaft 23, and the welding gun connecting block 24 and the welding gun shaft 23 are connected by a locking member, and the locking member is a connecting bolt 1 26. The welding gun connecting block 24 can be slid vertically on the welding gun shaft 23 to adjust the height of the welding gun connecting block 24, and the welding gun connecting block 24 can be rotated circumferentially on the welding gun shaft 23 to adjust the angle of the welding gun connecting block 24. When the position of the welding gun connecting block 24 on the welding gun shaft 23 is adjusted, the welding gun connecting block 24 and the welding gun shaft 23 are connected and locked by the connecting bolt 1 26. The welding gun connecting block 24 is connected to the welding gun 25 by at least one connecting bolt 27. The connecting bolt 1 26 and the connecting bolt 27 are respectively located on both sides of the welding gun connecting block 24, and the connecting bolt 1 26 and the connecting bolt 27 are both butterfly bolt structures.

[0036] In this embodiment, the welding gun connecting block 24 can be lifted and rotated only by being sleeved on the welding gun shaft 23, so as to conveniently adjust the height and angle of the welding gun 25. After the height and angle of the welding gun connecting block 24 are adjusted by lifting and rotating, the welding gun connecting block 24 and the welding gun shaft 23 can be quickly locked by connecting bolts 26, which has a simple structure, convenient operation and low cost.

[0037] like Figure 1 , Figure 4As shown, the workpiece rotating mechanism 6 includes a reducer 61 and a detachable workpiece mounting assembly connected to the power output end of the reducer 61. The reducer 61 is driven to rotate by a driving motor 62. The workpiece mounting assembly includes a connecting flange 63 detachably connected to the power output end of the reducer 61. A workpiece chuck 64 is provided on the connecting flange 63. The connecting flange 63 and the power output rod of the reducer 61 are axially fastened by a fastening screw 65. The workpiece 3 is clamped and fixed on the circular workpiece chuck 64. The driving motor 62 is a variable frequency motor. The rotational movement of the reducer 61 is controlled by the variable frequency motor. The fast disassembly and assembly of different workpieces 3 can be achieved through the connecting flange 63 and the workpiece chuck 64.

[0038] The workpiece pitch mechanism 4 includes a reducer 41, a power output shaft 48 of the reducer 41 is fixedly connected to the workpiece rotation mechanism 6, and the reducer 61 includes a shell, and a reducer connecting plate 45 and a bearing connecting plate 44 are respectively provided on both side ends of the shell. A rotating shaft assembly is provided on the bearing connecting plate 44 coaxially with the power output shaft 48, and the power output shaft 48 and the reducer connecting plate 45 are fixedly connected by welding. The reducer 41 is a worm gear reducer structure, and a handle 47 is provided at the input end of the reducer 41. The handle 47 is used to drive the pitch movement of the reducer 61 and its connecting parts to achieve different welding angles and welding process requirements of the workpiece 3. The workpiece pitch mechanism 4 also includes a brake clip 46 in friction contact with the power output shaft 48, which is used to fasten the power output shaft 48.

[0039] like Figure 1 , Figure 2 , Figure 4 As shown, the workpiece translation mechanism 5 includes a sliding rail 15 located on the workbench 1 and a sliding rail connecting plate 16 slidably connected to the sliding rail 15. The sliding rail 15 is connected to the workbench 1 through a rail support platform 14. The support assembly is arranged on the sliding rail connecting plate 16. The support assembly includes a steel bracket group 1 located between the workpiece rotation mechanism 6 and the sliding rail connecting plate 16 and a steel bracket group 2 located between the workpiece pitch mechanism 4 and the sliding rail connecting plate 16. A connecting base plate 18 is connected to the sliding rail connecting plate 16 by bolts. The steel bracket group 2 is arranged between the connecting base plate 18 and the bottom of the reducer 41. The steel bracket group 1 and the steel bracket group 2 are arranged in sequence along the moving direction of the sliding rail connecting plate 16.

[0040] Both steel bracket group one and steel bracket group two are formed by stacking and connecting multiple rectangular steel brackets 17. The number of rectangular steel brackets 17 can be increased or decreased according to actual needs, and the specifications of the rectangular steel brackets 17 can be adjusted. The number and height of the rectangular steel brackets 17 are determined by the operating height preference of the staff and the reserved installation height of the variable frequency motor. The rotating shaft assembly includes a bearing seat 43 arranged on the uppermost steel bracket 17 in the steel bracket group one, and the rotating shaft 42 is supported in the middle of the bearing seat 43. The rotating shaft 42 is fixedly connected to the bearing connecting plate 44 by welding.

[0041] like Figure 1 , Figure 5 As shown, the workpiece translation mechanism 5 includes a cylinder 51 connected to the workbench 1 and a piston rod connecting frame 54 connected to the slide rail connecting plate 16. The cylinder 51 is connected to the workbench 1 through the cylinder connecting frame 53. The piston rod 57 of the cylinder 51 is linked to the slide rail connecting plate 16 through the piston rod connecting frame 54. The lower end of the slide rail connecting plate 16 is evenly provided with a plurality of track sliders 52 that match the sliding rail 15. The lower end of the slide rail connecting plate 16 is also provided with a cover plate 55. The piston rod connecting frame 54 is located between the cover plate 55 and the piston rod 57 of the cylinder 51. Travel switches 56 are provided on the outer sides of both ends of the cylinder 51. The cover plate 55 is located on the inner side of the travel switch 56. The travel switch 56 is used to limit the moving stroke of the slide rail connecting plate 16.

[0042] like Figure 1 , Figure 2 As shown, the workbench 1 includes a workbench bracket 11 and a workbench panel 12 welded to the upper end of the workbench bracket 11. The workbench bracket 11 is welded by horizontally and vertically arranged square steels. The height of the workbench bracket 11 is determined by the operating space and operating height of the operator. A square receiving hole parallel to the sliding groove 21 is opened on the workbench panel 12, and a welding slag groove 13 is arranged in the receiving hole. When the workpiece 3 is installed on the workpiece chuck 64, the workpiece 3 is located above the welding slag groove 13.

[0043] Figure 6 A schematic diagram of a horizontal circular welding scheme is given. Before welding, the position of the workpiece 3 and the welding gun 25 are adjusted. The welding gun 25 is located above the weld of the workpiece 3, and the welding speed and angle of the workpiece 3 are controlled by a variable frequency motor.

[0044] Figure 7 A schematic diagram of a circumferential seam welding scheme with an inclined angle is given. For the welding of this type of workpiece 3, the best process scheme is to make the workpiece 3 have a certain downward inclination angle. During welding, the molten melt can flow to the gap to be welded under the action of gravity, so that the weld thickness at the welding point has good consistency and achieves good welding strength.

[0045] Figure 8A schematic diagram of the end face circumferential welding scheme is given. The workpiece 3 to be welded has a concave end face characteristic. The best process scheme is to make the workpiece 3 tilt upward at a certain angle. On the one hand, it can make it easy to arrange the welding gun 25 in a working position that does not interfere with the workpiece 3. On the other hand, it can also ensure the uniformity of the weld during welding. The molten metal can flow to the gap to be welded under the action of gravity.

[0046] Fig. 9 It is a schematic diagram of the workpiece reaching the limit position, and the welding workpiece 3 is disengaged from the welding gun 25, so as to facilitate the disassembly of the workpiece 3 and the clamping of a new welding workpiece 3 after the welding is completed.

[0047] Fig.10 It is a schematic diagram of the initial position of the equipment without a workpiece installed, and the welding gun adjustment mechanism 2, the workpiece rotation mechanism 6, the workpiece pitch mechanism 4 and the workpiece translation mechanism 5 are all in the initial position.

[0048] The circumferential welding equipment in this embodiment can also be provided with a protective cover to provide enclosure and protection during the welding operation. At the same time, a switch sensor is provided at the opening and closing of the protective cover. When the protective cover is closed, the welding operation can be carried out. When the protective cover is opened, the welding equipment stops to prevent misoperation and dangerous operation. In addition, the circumferential welding equipment can also be provided with multiple flow operations at the same time, and no human intervention is required during the welding process.

[0049] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0050] The above specific implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A circumferential welding device with multi-axis linkage performance, characterized in that: The invention comprises a workbench (1), a workpiece translation mechanism (5) and a welding gun adjustment mechanism (2) arranged on the workbench (1), wherein the workpiece translation mechanism (5) and the welding gun adjustment mechanism (2) are arranged vertically, and the welding gun adjustment mechanism (2) comprises a sliding assembly, and a welding gun rod (23) is connected to the sliding assembly, and a welding gun connecting block (24) is provided on the welding gun rod (23), and the welding gun connecting block (24) can rotate and rise and fall on the welding gun rod (23), and the welding gun connecting block (24) and the welding gun rod (23) are connected by a locking member; a height adjusting member is provided on the sliding assembly An adjustable support assembly comprises a workpiece pitch mechanism (4) and a workpiece rotation mechanism (6), wherein the power output end of the workpiece pitch mechanism (4) is connected to the workpiece rotation mechanism (6); the workpiece rotation mechanism (6) comprises a second reducer (61) and a detachable workpiece mounting assembly connected to the power output end of the second reducer (61); the workpiece pitch mechanism (4) comprises a first reducer (41), and the power output shaft (48) of the first reducer (41) is fixedly connected to the workpiece rotation mechanism (6) and thereby drives the workpiece rotation mechanism (6) and the workpiece mounting assembly to perform pitch motion.

2. The circumferential welding equipment with multi-axis linkage performance according to claim 1 is characterized in that: The sliding assembly comprises a sliding groove (21) connected to the workbench (1) and a welding gun slider (28) located in the sliding groove (21); a bracket thread is provided on the welding gun rod (23) near the welding gun slider (28); and a slider fastening bolt (22) located on the welding gun rod (23) is threadedly connected to the bracket thread.

3. The circumferential welding equipment with multi-axis linkage performance according to claim 2 is characterized in that: The welding gun connecting block (24) is sleeved on the welding gun shaft (23); the locking member is a connecting bolt 1 (26); when the position of the welding gun connecting block (24) on the welding gun shaft (23) is adjusted, the welding gun connecting block (24) and the welding gun shaft (23) are connected and locked by the connecting bolt 1 (26); the welding gun connecting block (24) is connected to the welding gun (25) by at least one connecting bolt 2 (27); the connecting bolt 1 (26) and the connecting bolt 2 (27) are respectively located on two sides of the welding gun connecting block (24).

4. The circumferential welding equipment with multi-axis linkage performance according to claim 3 is characterized in that: The second reducer (61) is driven to rotate by a driving motor (62); the workpiece mounting assembly comprises a connecting flange (63) detachably connected to the power output end of the second reducer (61), and a workpiece chuck (64) is arranged on the connecting flange (63).

5. The circumferential welding equipment with multi-axis linkage performance according to claim 4, characterized in that: The workpiece pitch mechanism (4) further comprises a brake clamp (46) in frictional contact with the power output shaft (48).

6. The circumferential welding equipment with multi-axis linkage performance according to claim 5, characterized in that: The second reducer (61) comprises a housing, and a reducer connecting plate (45) and a bearing connecting plate (44) are respectively provided at both side ends of the housing, and the power output shaft (48) is fixedly connected to the reducer connecting plate (45); and a rotating shaft assembly is coaxially provided on the bearing connecting plate (44) with the power output shaft (48).

7. The circumferential welding equipment with multi-axis linkage performance according to claim 6, characterized in that: The workpiece translation mechanism (5) comprises a sliding rail (15) located on the workbench (1) and a sliding rail connecting plate (16) slidably connected to the sliding rail (15); the support assembly is arranged on the sliding rail connecting plate (16), and the support assembly comprises a steel bracket group 1 located between the workpiece rotation mechanism (6) and the sliding rail connecting plate (16) and a steel bracket group 2 located between the workpiece pitch mechanism (4) and the sliding rail connecting plate (16), and the steel bracket group 1 and the steel bracket group 2 are arranged in sequence along the moving direction of the sliding rail connecting plate (16).

8. The circumferential welding equipment with multi-axis linkage performance according to claim 7, characterized in that: The steel bracket group 1 and the steel bracket group 2 are both formed by stacking and connecting a plurality of steel brackets (17); the rotating shaft assembly comprises a bearing seat (43) arranged on the uppermost steel bracket (17) in the steel bracket group 1, and the rotating shaft (42) is supported on the middle part of the bearing seat (43).

9. The circumferential welding equipment with multi-axis linkage performance according to claim 8, characterized in that: The workpiece translation mechanism (5) comprises a cylinder (51) connected to the workbench (1) and a piston rod connecting frame (54) connected to the slide rail connecting plate (16); the piston rod (57) of the cylinder (51) is linked to the slide rail connecting plate (16) via the piston rod connecting frame (54); a plurality of track sliders (52) matching the slide rail (15) are evenly arranged at the lower end of the slide rail connecting plate (16); a cover plate (55) is also arranged at the lower end of the slide rail connecting plate (16); and the piston rod connecting frame (54) is located between the cover plate (55) and the piston rod (57) of the cylinder (51).

10. The circumferential welding equipment with multi-axis linkage performance according to claim 9, characterized in that: The workbench (1) is provided with a receiving hole parallel to the sliding groove (21), and a welding slag groove (13) is provided in the receiving hole. When the workpiece (3) is mounted on the workpiece chuck (64), the workpiece (3) is located above the welding slag groove (13); the slider fastening bolt (22), the connecting bolt 1 (26) and the connecting bolt 2 (27) are all butterfly bolts.

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