CN112917049B

CN112917049B - Disc type welding machine

Info

Publication number: CN112917049B
Application number: CN202110082241.5A
Authority: CN
Inventors: 王明; 李振华
Original assignee: Guangdong Linzhengfeng Intelligent Digital Technology Co ltd
Current assignee: Guangdong Linzhengfeng Intelligent Digital Technology Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2022-11-15
Anticipated expiration: 2041-01-21
Also published as: CN112917049A

Abstract

The invention discloses a disc type welding machine which comprises a six-station rotary workbench, a pipe fitting feeding mechanical arm, a first welding mechanical arm, a second welding mechanical arm, a third welding mechanical arm, a fourth welding mechanical arm and an unloading mechanical arm, wherein 6 jigs are distributed on the six-station rotary workbench along the periphery of the workbench, the six-station rotary workbench intermittently rotates, sequentially passes through the feeding of the pipe fitting feeding mechanical arm and then is welded by the four welding mechanical arms, and 4 welded pipe fitting groups are taken out of the jigs by the unloading mechanical arm and are placed on a welding part discharge device. The automatic feeding, welding and discharging assembly line operation is adopted, and the automatic feeding, welding and discharging assembly line operation has the characteristics of high automation degree, reasonable structure and convenience in operation; this patent improves the tool, has arranged 4 pipe fittings group anchor clamps ingeniously on the tool body, can press from both sides 4 group pipe subassemblies on the tool, and the position on the tool body has obtained make full use of, and the overall arrangement is very reasonable.

Description

Disc type welding machine

Technical Field

The invention relates to welding equipment, in particular to a pipe assembly welding machine.

Background

The existing pipe assembly welding device mainly adopts manual feeding and manual discharging, and has the defects of low automation degree, high labor intensity, low production efficiency and high production cost. The utility model discloses a high stability pipe fitting welding machine has rolling disc (1), rolling disc (1) rotationally installs on base (6), be equipped with a plurality of rotation seats (2) on rolling disc (1) with encircling, but rotation setting of rotation seat (2), be equipped with suit post (3) on rotation seat (2), the top of suit post (3) is equipped with soldered connection (7), its characterized in that: the positioning device is characterized in that a positioning seat is sleeved on the sleeving column (3) and fixedly connected with the rotating seat, a positioning screw is screwed on the positioning seat, a concave cavity is formed in the positioning screw, an elastic piece is arranged in the concave cavity, and the elastic piece presses the positioning piece on the side portion of the sleeving column (3). By adopting the technical scheme, the positioning and clamping of the pipe fitting are effectively realized, so that the pipe fitting can synchronously rotate together with the rotating seat, and the welding head can be ensured to accurately and completely complete the welding operation of the top opening of the pipe fitting.

Disclosure of Invention

In order to overcome the defects, the invention aims to provide a disc type welding machine which is in flow line operation and has high automation degree.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the disc type welding machine comprises a six-station rotary workbench, a pipe fitting feeding manipulator, a first welding manipulator, a second welding manipulator, a third welding manipulator, a fourth welding manipulator and an unloading manipulator, wherein 6 jigs are distributed on the six-station rotary workbench along the periphery of the workbench, the pipe fitting feeding manipulator, the first welding manipulator, the second welding manipulator, the third welding manipulator, the fourth welding manipulator and the unloading manipulator are distributed on the periphery of the six-station rotary workbench, the pipe fitting feeding manipulator is used for clamping 4 pipe fittings into a first pipe fitting group clamp, a second pipe fitting group clamp, a third pipe fitting group clamp and a fourth pipe fitting group clamp on the jigs, each pipe fitting group comprises a vertical pipe and two transverse pipes, when the pipe fittings are clamped into the jigs, the two transverse pipes are parallel to each other and perpendicular to the vertical pipes, and one ends of the two transverse pipes are in contact with pipe bodies of the vertical pipes; when clamping is completed, the six-station rotary workbench rotates by one station, and the first welding manipulator welds the joint of two transverse pipes and a vertical pipe in a first pipe group in the jig; when welding is finished, the six-station rotary workbench rotates by one station, and the second welding manipulator welds the joint of two transverse pipes and a vertical pipe in a second pipe group in the jig; when the welding is finished, the six-station rotary workbench rotates by one station, and the third welding manipulator welds the joint of two transverse pipes and a vertical pipe in a third pipe group in the jig; when welding is finished, the six-station rotary workbench rotates by one station, and the fourth welding manipulator welds the joint of two transverse pipes and a vertical pipe in a fourth pipe group in the jig; when welding is completed, the six-station rotary workbench rotates by one station, and the unloading manipulator takes out 4 welded pipe fittings from the jig and places the pipe fittings on the weldment discharge device.

The jig comprises a support, an inner base plate, an outer base plate, a first pipe set clamp, a second pipe set clamp, a third pipe set clamp and a fourth pipe set clamp, wherein the inner base plate and the outer base plate are fixed on the support; the pipe assembly clamped by the first pipe assembly clamp and the pipe assembly clamped by the second pipe assembly clamp are positioned on the same plane; the pipe fitting group clamped by the third pipe fitting group clamp and the pipe fitting group clamped by the fourth pipe fitting group clamp are positioned on the same plane.

Further, the first pipe assembly clamp and the second pipe assembly clamp are identical in structure.

Further, first pipe fitting group anchor clamps include standpipe support piece, the tight cylinder in standpipe tip top, two spacing seats of standpipe, two violently manage spacing seat and two violently manage the tight cylinder in tip top, the left side bottom of base plate including standpipe support piece establishes, the left side top of base plate including the tight cylinder in standpipe tip top is established, the side of base plate in two spacing seats of standpipe are located, the standpipe is erect and is placed in the recess of two spacing seats of standpipe, the lower extreme roof pressure of standpipe is on standpipe support piece, the tight cylinder in standpipe tip top is tight with the upper end top of standpipe, two violently manage and lie in two spacing grooves on violently managing spacing seat respectively, the one end roof pressure of two violently pipes is on the standpipe, two violently manage the tight cylinder in tip top and tightly push up the other end of two violently pipes respectively, two violently manage spacing seats and two violently manage the tight cylinder in tip top and establish including on the base plate.

Further, first pipe fitting group anchor clamps still include two spacing cylinders of standpipe and two standpipe stoppers, two spacing cylinders of standpipe establish on the inner substrate board and respectively in the next door of two spacing seats of standpipe, two spacing cylinders of standpipe drive two standpipe stoppers and push down the body of standpipe.

Further, the third pipe group clamp and the fourth pipe group clamp are identical in structure.

Further, fourth pipe piece anchor clamps include standpipe support piece, the tight cylinder in standpipe tip top, two spacing seats of standpipe, two violently manage spacing seat and two violently manage the tight cylinder in tip top, standpipe support piece establishes the right side bottom at outer base plate, the tight cylinder in standpipe tip top establishes the right side top at outer base plate, two spacing seats of standpipe are located the right side limit of outer base plate, the standpipe is erect and is placed in the recess of two spacing seats of standpipe, the lower extreme roof pressure of standpipe is on standpipe support piece, the tight cylinder in standpipe tip top is tight with the upper end top of standpipe, two violently manage and lie in two spacing grooves on violently managing spacing seat respectively, the one end roof pressure of two violently pipes is on the standpipe, two violently manage the tight cylinder in tip top and tightly push up the other end of two violently pipes respectively, two violently manage spacing seats and two violently manage the tight cylinder in tip top and establish on outer base plate.

Furthermore, fourth pipe element group anchor clamps still include two violently pipe spacing cylinders and two violently pipe stoppers, and two violently pipe spacing cylinders establish on outer base plate and respectively in the next door of two violently pipe spacing seats, and two violently pipe spacing cylinders drive two respectively and violently pipe the stopper and push down two violently pipes.

Furthermore, a limiting through hole is formed in the transverse pipe limiting seat, and a transverse pipe clamped in the first pipe fitting group clamp or the second pipe fitting group clamp penetrates through the limiting through hole.

Further, unloading manipulator is including snatching the subassembly, snatch the subassembly including snatching the frame, the left side is violently managed anchor clamps, left cylinder, the right side is violently managed anchor clamps, right cylinder, standpipe anchor clamps and drive actuating cylinder, left side cylinder and left side are violently managed anchor clamps and are established at the left side of snatching the frame, right side cylinder and right side are violently managed anchor clamps and are established on the right side of snatching the frame, standpipe anchor clamps and drive actuating cylinder establish the back side of snatching the frame, left side cylinder drive is violently managed the left side of violently managing anchor clamps with welding back pipe group and is cliied, right side cylinder drive is violently managed the right side of violently managing anchor clamps with welding back pipe group and is cliied, it cliies the standpipe of welding back pipe group to drive actuating cylinder drive standpipe anchor clamps.

The invention has the beneficial effects that:

the automatic feeding, welding and discharging assembly line operation is adopted, and the automatic feeding, welding and discharging assembly line operation has the advantages of being high in automation degree, reasonable in structure and convenient to operate; this patent is improved the tool, has arranged 4 pipe fittings group anchor clamps ingeniously on the tool body, can press from both sides 4 group pipe subassemblies of dress on the tool, and the position on the tool body has obtained make full use of, and the overall arrangement is very reasonable.

Drawings

The invention is further described with the aid of the accompanying drawings, in which the embodiments do not constitute any limitation, and for a person skilled in the art, without inventive effort, further drawings may be obtained from the following figures:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the fixture shown in FIG. 1;

FIG. 3 is a schematic view of the first tube assembly fixture of FIG. 2;

FIG. 4 is a schematic structural view of the fourth pipe set clamp shown in FIG. 2;

FIG. 5 is a schematic view of the grasping assembly shown in FIG. 1;

fig. 6 is a top view of fig. 5.

In the figure: 1. a six-station rotary workbench; 2. a pipe fitting feeding manipulator; 3. a first welding robot; 4. a second welding robot; 5. A third welding manipulator; 6. a fourth welding manipulator; 7. a discharging manipulator; 8. a jig; 9. a weldment discharge means; 10. a first tubing set clamp; 11. a second tubing set clamp; 12. a third tube set clamp; 13. a fourth pipe set clamp; 14. a vertical tube; 15. a transverse tube; 16. a support; 17. an inner substrate; 18. an outer substrate; 19. a standpipe support; 20. the end part of the vertical pipe tightly props against the air cylinder; 21. a vertical pipe limiting seat; 22. a horizontal tube limiting seat; 23. the end part of the transverse pipe tightly props against the air cylinder; 24. a vertical pipe limiting cylinder; 25. a standpipe limiting block; 26. a standpipe support; 27. the end part of the vertical pipe tightly props against the air cylinder; 28. a vertical pipe limiting seat; 29. a horizontal pipe limiting seat; 30. the end part of the transverse pipe tightly props against the air cylinder; 31. a transverse pipe limiting cylinder; 32. a transverse pipe limiting block; 33. a limiting through hole; 34. a vertical pipe limiting cylinder; 35. a vertical pipe limiting block; 36. a grasping assembly; 37. a grabbing frame; 38. a left horizontal tube clamp; 39. a left cylinder; 40. a right cross tube clamp; 41. a right cylinder; 42. a vertical pipe clamp; 43. the cylinder is driven.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it is to be noted that the embodiments and features of the embodiments of the present application can be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward", "reverse", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.

As shown in fig. 1 and 2, the disc type welding machine includes a six-station rotary workbench 1, a pipe feeding manipulator 2, a first welding manipulator 3, a second welding manipulator 4, a third welding manipulator 5, a fourth welding manipulator 6 and a discharging manipulator 7, wherein 6 jigs 8 are distributed on the six-station rotary workbench 1 along the periphery of the workbench, the pipe feeding manipulator 2, the first welding manipulator 3, the second welding manipulator 4, the third welding manipulator 5, the fourth welding manipulator 6 and the discharging manipulator 7 are distributed on the periphery of the six-station rotary workbench 1, the pipe feeding manipulator 2 is used for clamping 4 pipe sets into a first pipe set clamp 10, a second pipe set clamp 11, a third pipe set clamp 12 and a fourth pipe set clamp 13 on the jigs 8, the pipe sets include a vertical pipe 14 and two horizontal pipes 15, when the pipe sets are clamped into the jigs, the two horizontal pipes 15 are parallel to each other and perpendicular to the vertical pipe 14, and one end of the two horizontal pipes 15 is in contact with the pipe body of the vertical pipe 14; when clamping is finished, the six-station rotary workbench 1 rotates by one station, and the first welding manipulator 3 welds the joint of two transverse pipes and a vertical pipe in a first pipe group in the jig 8; when welding is finished, the six-station rotary workbench 1 rotates by one station, and the second welding manipulator 4 welds the joint of two transverse pipes and a vertical pipe in a second pipe group in the jig; when welding is finished, the six-station rotary workbench 1 rotates by one station, and the third welding manipulator 5 welds the joint of two transverse pipes and a vertical pipe in a third pipe group in the jig; when welding is finished, the six-station rotary workbench 1 rotates one station, and the fourth welding manipulator 6 welds the joint of two transverse pipes and a vertical pipe in a fourth pipe group in the jig 8; when welding is completed, the six-station rotary workbench 1 rotates by one station, and the discharging manipulator 7 takes out 4 welded pipe fittings from the jig and places the pipe fittings on the weldment discharging device 9.

The jig 8 comprises a support 16, an inner substrate 17, an outer substrate 18, a first pipe assembly clamp 10, a second pipe assembly clamp 11, a third pipe assembly clamp 12 and a fourth pipe assembly clamp 13, wherein the inner substrate 17 and the outer substrate 18 are fixed on the support 16, the support 16 is fixed on the six-station rotary workbench 1, the first pipe assembly clamp 10 and the second pipe assembly clamp 11 are fixed on the inner substrate 17, and the third pipe assembly clamp 12 and the fourth pipe assembly clamp 13 are fixed on the outer substrate 18; the pipe group clamped by the first pipe group clamp 10 and the pipe group clamped by the second pipe group clamp 11 are positioned on the same plane; the pipe group clamped by the third pipe group clamp 12 and the pipe group clamped by the fourth pipe group clamp 13 are positioned on the same plane.

As shown in fig. 3, the first pipe assembly fixture 10 and the second pipe assembly fixture 11 have the same structure, the first pipe assembly fixture 10 includes a vertical pipe support 19, a vertical pipe end abutting cylinder 20, two vertical pipe limiting seats 21, two horizontal pipe limiting seats 22 and two horizontal pipe end abutting cylinders 23, the vertical pipe support 19 is disposed at the bottom of the left side of the inner substrate 17, the vertical pipe end abutting cylinder 20 is disposed at the top of the left side of the inner substrate 17, the two vertical pipe limiting seats 21 are located on the side of the inner substrate 17, the vertical pipe 14 is vertically disposed in the grooves of the two vertical pipe limiting seats 21, the lower end abutting cylinder of the vertical pipe 14 abuts against the vertical pipe support 19, the vertical pipe end abutting cylinder 20 abuts against the upper end of the vertical pipe 14, the two horizontal pipes 15 are respectively located in the limiting grooves on the two horizontal pipe limiting seats 22, one ends of the two horizontal pipes 15 abut against the vertical pipe 14, the two horizontal pipe end abutting cylinders 23 abut against the other ends of the two horizontal pipes 15, and the two horizontal pipe end abutting cylinders 22 and 23 are disposed on the inner substrate 17.

First pipe fitting group anchor clamps 10 still includes two riser spacing cylinders 24 and two riser stoppers 25, and two riser spacing cylinders 24 establish on interior base plate 17 and respectively in two riser spacing seat 21's next door, and two riser spacing cylinders 25 drive two riser stoppers 24 and push down the body of riser 14.

As shown in fig. 4, the third pipe set clamp 12 and the fourth pipe set clamp 13 are identical in structure. Fourth pipe group anchor clamps 13, including standpipe support 26, the tight cylinder 27 in standpipe tip top, two spacing seats of standpipe 28, two violently manage spacing seat 29 and two violently pipe tip top tight cylinder 30, standpipe support 26 establishes the right side bottom at outer base plate 18, the tight cylinder 27 in standpipe tip top establishes the right side top at outer base plate 18, two spacing seats of standpipe 28 are located the right side limit of outer base plate, the standpipe is erect and is placed in the recess of two spacing seats of standpipe 28, the lower extreme roof pressure of standpipe is on standpipe support 26, the tight cylinder 27 in standpipe tip top is tight with the upper end top of standpipe 14, two violently manage 15 and be located the spacing groove on two violently pipe spacing seats 29 respectively, the one end roof pressure of two violently pipe 15 is on standpipe 14, two violently pipe tip top tight cylinders 30 are tight the other ends of two violently pipes 15 respectively, two violently manage spacing seats of 29 and two violently pipe tip top tight cylinder 30 and establish on outer base plate 18.

The fourth pipe group clamp 13 further includes two horizontal pipe limiting cylinders 31 and two horizontal pipe limiting blocks 32, the two horizontal pipe limiting cylinders 31 are disposed on the outer substrate 18 and beside the two horizontal pipe limiting seats 29, and the two horizontal pipe limiting cylinders 31 respectively drive the two horizontal pipe limiting blocks 32 to press the two horizontal pipes. The transverse pipe limiting seat 32 is provided with a limiting through hole 33, and a transverse pipe clamped in the first pipe assembly clamp or the second pipe assembly clamp penetrates through the limiting through hole 33. Still include two spacing cylinders of standpipe 34 and two standpipe stopper 35, two spacing cylinders of standpipe 34 establish on outer base plate 18 and are located the next door of two spacing seats of standpipe 28 respectively, and two spacing cylinders of standpipe 34 drive two standpipe stopper 35 and push down the body of standpipe.

As shown in fig. 5 and 6, the unloading manipulator 7 includes a grabbing assembly 36, the grabbing assembly 36 includes a grabbing frame 37, a left horizontal pipe clamp 38, a left air cylinder 39, a right horizontal pipe clamp 40, a right air cylinder 41, a vertical pipe clamp 42 and a driving air cylinder 43, the left air cylinder 39 and the left horizontal pipe clamp 38 are disposed on the left side of the grabbing frame 37, the right air cylinder 41 and the right horizontal pipe clamp 40 are disposed on the right side of the grabbing frame 37, the vertical pipe clamp 42 and the driving air cylinder 43 are disposed on the rear side of the grabbing frame 37, the left air cylinder 39 drives the left horizontal pipe clamp 38 to clamp the left horizontal pipe of the welded rear pipe group, the right air cylinder 41 drives the right horizontal pipe clamp 40 to clamp the right horizontal pipe of the welded rear pipe group, and the driving air cylinder 43 drives the vertical pipe clamp 42 to clamp the vertical pipe of the welded rear pipe group.

The working principle is as follows: what this patent adopted is six station rotary worktable, has set up six stations at six station rotary worktable's periphery, realizes in proper order that material loading process, first pipe assembly welding process, second pipe assembly welding process, third pipe assembly welding process, fourth pipe assembly welding process and unloading are got the material process, and unloading manipulator takes out welded 4 pipe fittings group from the tool and places weldment discharging device on, has just accomplished this operation. What this patent adopted is the streamlined operation of automatic feeding, welding, unloading, has degree of automation height, rational in infrastructure, convenient operation's characteristics.

The jig on the six-station rotary workbench is improved, 4 pipe fitting group fixtures are ingeniously arranged in the limited space of the jig body, 4 pipe fitting group components can be clamped on the jig, the position on the jig body is fully utilized, the feeding of the pipe fitting feeding manipulator 2 is not affected, because the first pipe fitting group fixture or the second pipe fitting group fixture is arranged on the inner base plate, in order to increase the clamping firmness of the transverse pipes, the limiting through holes 33 are additionally arranged on the transverse pipe limiting seats 32 in the third pipe fitting group fixture or the fourth pipe fitting group fixture, the transverse pipe limiting seats 32 are not only used for limiting the transverse pipes in the third pipe fitting group or the fourth pipe fitting group, the limiting of the transverse pipes in the first pipe fitting group or the second pipe fitting group is realized simultaneously, and the layout is very reasonable.

Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent. Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a disc type welding machine which characterized in that: the automatic pipe fitting feeding device comprises a six-station rotary workbench, a pipe fitting feeding manipulator, a first welding manipulator, a second welding manipulator, a third welding manipulator, a fourth welding manipulator and an unloading manipulator, wherein 6 jigs are distributed on the six-station rotary workbench along the periphery of the workbench, the pipe fitting feeding manipulator, the first welding manipulator, the second welding manipulator, the third welding manipulator, the fourth welding manipulator and the unloading manipulator are distributed on the periphery of the six-station rotary workbench, the pipe fitting feeding manipulator is used for clamping 4 pipe fittings into a first pipe fitting group clamp, a second pipe fitting group clamp, a third pipe fitting group clamp and a fourth pipe fitting group clamp on the jigs, each pipe fitting group comprises a vertical pipe and two horizontal pipes, when the pipe fittings are clamped into the jigs, the two horizontal pipes are parallel to each other and perpendicular to each other, and one ends of the two horizontal pipes are in contact with the pipe bodies of the vertical pipes; when clamping is finished, the six-station rotary workbench rotates by one station, and the first welding manipulator welds the joint of two transverse pipes and a vertical pipe in a first pipe group in the jig; when welding is finished, the six-station rotary workbench rotates by one station, and the second welding manipulator welds the joint of two transverse pipes and a vertical pipe in a second pipe group in the jig; when welding is finished, the six-station rotary workbench rotates by one station, and the third welding manipulator welds the joint of two transverse pipes and a vertical pipe in a third pipe group in the jig; when welding is finished, the six-station rotary workbench rotates by one station, and the fourth welding manipulator welds the joint of two transverse pipes and a vertical pipe in a fourth pipe group in the jig; when welding is completed, the six-station rotary workbench rotates by one station, and the unloading manipulator takes out the welded 4 pipe fitting groups from the jig and places the pipe fitting groups on a weldment discharge device; the jig comprises a support, an inner base plate, an outer base plate, a first pipe fitting group clamp, a second pipe fitting group clamp, a third pipe fitting group clamp and a fourth pipe fitting group clamp, wherein the inner base plate and the outer base plate are fixed on the support; the pipe assembly clamped by the first pipe assembly clamp and the pipe assembly clamped by the second pipe assembly clamp are positioned on the same plane; the pipe group clamped by the third pipe group clamp and the pipe group clamped by the fourth pipe group clamp are positioned on the same plane; the first pipe fitting group clamp and the second pipe fitting group clamp are identical in structure; the first pipe fitting group clamp comprises a vertical pipe supporting piece, a vertical pipe end propping cylinder, two vertical pipe limiting seats, two horizontal pipe limiting seats and two horizontal pipe end propping cylinders, wherein the vertical pipe supporting piece is arranged at the bottom of the left side of the inner base plate, the vertical pipe end propping cylinder is arranged at the top of the left side of the inner base plate, the two vertical pipe limiting seats are positioned at the side edges of the inner base plate, the vertical pipe is vertically arranged in a groove of the two vertical pipe limiting seats, the lower end of the vertical pipe props against the vertical pipe supporting piece, the vertical pipe end propping cylinder props against the upper end of the vertical pipe, the two horizontal pipes are respectively positioned in limiting grooves on the two horizontal pipe limiting seats, one ends of the two horizontal pipes prop against the vertical pipe, the two horizontal pipe end propping cylinders respectively prop against the other ends of the two horizontal pipes, and the two horizontal pipe limiting seats and the two horizontal pipe end propping cylinders are arranged on the inner base plate; the first pipe fitting group clamp further comprises two vertical pipe limiting cylinders and two vertical pipe limiting blocks, the two vertical pipe limiting cylinders are arranged on the inner base plate and are respectively arranged beside the two vertical pipe limiting seats, and the two vertical pipe limiting cylinders drive the two vertical pipe limiting blocks to press the pipe bodies of the vertical pipes; the third pipe fitting group clamp and the fourth pipe fitting group clamp are identical in structure; the fourth pipe piece group clamp comprises a vertical pipe supporting piece, a vertical pipe end propping cylinder, two vertical pipe limiting seats, two horizontal pipe limiting seats and two horizontal pipe end propping cylinders, wherein the vertical pipe supporting piece is arranged at the bottom of the right side of the outer base plate, the vertical pipe end propping cylinder is arranged at the top of the right side of the outer base plate, the two vertical pipe limiting seats are positioned on the right side edge of the outer base plate, the vertical pipe is vertically arranged in a groove of the two vertical pipe limiting seats, the lower end of the vertical pipe props against the vertical pipe supporting piece, the vertical pipe end propping cylinder props against the upper end of the vertical pipe, the two horizontal pipes are respectively positioned in limiting grooves on the two horizontal pipe limiting seats, one ends of the two horizontal pipes prop against the vertical pipe, the two horizontal pipe end propping cylinders prop against the other ends of the two horizontal pipes respectively, and the two horizontal pipe end propping cylinders are arranged on the outer base plate; the fourth pipe piece group clamp further comprises two transverse pipe limiting cylinders and two transverse pipe limiting blocks, the two transverse pipe limiting cylinders are arranged on the outer base plate and are respectively arranged beside the two transverse pipe limiting seats, and the two transverse pipe limiting cylinders respectively drive the two transverse pipe limiting blocks to press the two transverse pipes; the transverse pipe limiting seat is provided with a limiting through hole, and a transverse pipe clamped in the first pipe assembly clamp or the second pipe assembly clamp penetrates through the limiting through hole.

2. The disc welder of claim 1, characterized in that: unloading manipulator is including snatching the subassembly, snatch the subassembly including snatching the frame, the left side is violently managed anchor clamps, left cylinder, the right side is violently managed anchor clamps, right cylinder, standpipe anchor clamps and drive actuating cylinder, left side cylinder and left side are violently managed anchor clamps and are established at the left side of snatching the frame, right side cylinder and right side are violently managed anchor clamps and are established on the right side of snatching the frame, standpipe anchor clamps are established at the back side of snatching the frame with driving actuating cylinder, left side cylinder drive is violently managed the left side of violently pipe anchor clamps with welding back pipe group and is cliied, right side cylinder drive is violently managed the right side of violently pipe anchor clamps with welding back pipe group and is cliied, it cliies to drive actuating cylinder drive standpipe anchor clamps with welding back pipe group's standpipe.