A rapid welding mechanism for alloy forgings

Abstract

The application discloses a kind of quick welding mechanism of alloy forge piece, belong to alloy forge piece welding technical field, including pipeline clamping positioning assembly, flange clamping positioning assembly and welding assembly, the pipeline clamping positioning assembly with flange clamping positioning assembly sliding connection, the end of flange clamping positioning assembly is connected with welding assembly;The pipeline clamping positioning assembly includes first outer sleeve, first driven link and first clamping plate, a plurality of long strip-shaped guide grooves are equipped on the outer wall of first outer sleeve, and the long strip-shaped guide grooves are arranged along the axis of first outer sleeve, and the other end of two first driven links is hinged in each long strip-shaped guide groove of first outer sleeve respectively, and the other end of two first driven links is hinged with first clamping plate, and two first driven links are arranged in parallel, and first clamping plate is arranged in parallel with the axis of first outer sleeve.Compared with prior art, it has the characteristics of quick positioning of flange and pipeline clamping, and welding.

Description

Technical Field

[0001] This invention relates to the field of alloy forging welding technology, and in particular to a rapid welding mechanism for alloy forgings. Background Technology

[0002] In current industrial production and pipeline connection operations, when welding alloy neck flanges and pipes is required, construction workers will first perform spot welding. Spot welding, as the initial step in welding, plays a crucial role in positioning and preliminary fixation.

[0003] After spot welding, a rotary welding device is used for the formal welding work. This type of rotary welding device is widely used in pipe welding. Typically, it consists of a motor and a worktable. The motor, as the power source, drives the worktable to rotate via a transmission mechanism. The pipe to be welded is securely fixed to the worktable. When the motor starts and the worktable begins to rotate smoothly, the pipe rotates synchronously. The welding torch remains stationary, precisely positioned to ensure the accuracy and stability of the welding process. As the pipe and neck flange continue to rotate with the worktable, the welding torch welds the connection between the pipe and the neck flange according to preset welding parameters, thus completing the circumferential weld.

[0004] However, in actual production operations, the aforementioned rotary welding device is not suitable for all situations. When encountering excessively long pipes, numerous challenges arise. Because the pipe length exceeds the load-bearing capacity of the rotary welding device's worktable, it's impossible to completely mount the pipe on the worktable and allow it to rotate with it. In this case, forcibly using the rotary welding device will not only fail to guarantee weld quality but may also lead to pipe displacement, uneven welds, and even safety accidents. Therefore, when a pipe is too long to be mounted on the worktable and rotate with it, the aforementioned rotary welding device cannot be used. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by providing a rapid welding mechanism for alloy forgings, enabling rapid clamping and positioning of flanges and pipes for welding.

[0006] This invention provides a rapid welding mechanism for alloy forgings, comprising a pipe clamping and positioning assembly, a flange clamping and positioning assembly, and a welding assembly. The pipe clamping and positioning assembly is slidably connected to the flange clamping and positioning assembly, and the end of the flange clamping and positioning assembly is connected to the welding assembly. The pipe clamping and positioning assembly includes a first outer sleeve, a first driven connecting rod, and a first clamping plate. The outer wall of the first outer sleeve is provided with multiple elongated guide grooves arranged along the axis of the first outer sleeve. Each elongated guide groove of the first outer sleeve is hinged to one end of two first driven connecting rods, and the other ends of the two first driven connecting rods are hinged to the first clamping plate. The moving connecting rods are arranged in parallel, and the first clamping plate is set parallel to the axis of the first outer sleeve. The flange clamping and positioning assembly includes a second outer sleeve, a second driven connecting rod, and a second clamping plate. The outer wall of the second outer sleeve is provided with multiple elongated guide grooves, which are arranged along the axis of the second outer sleeve. Each elongated guide groove of the second outer sleeve is hinged to one end of two second driven connecting rods, and the other end of the two second driven connecting rods is hinged to the second clamping plate. The two second driven connecting rods are arranged in parallel, and the second clamping plate is set parallel to the axis of the second outer sleeve. The first outer sleeve and the second outer sleeve are slidably connected coaxially. The other end of the second outer sleeve is connected to the welding assembly.

[0007] Furthermore, the first outer sleeve is provided with a cavity, and the elongated guide groove of the first outer sleeve is connected to the cavity; a first lead screw is installed in the cavity of the first outer sleeve, one end of the first lead screw is rotatably connected to the cavity, the first lead screw is engaged with a first lead screw nut, the first lead screw nut is hinged to one end of the first active connecting rod, and the other end of the first active connecting rod is hinged to the first clamping plate.

[0008] Furthermore, one end of the first lead screw is provided with a guide blind hole, and the end wall of the guide blind hole is provided with a threaded blind hole. The rotating rod and the adjusting screw are fixedly connected coaxially. The adjusting screw corresponds to the threaded blind hole of the first lead screw. The outer wall of the other end of the rotating rod is provided with a blind hole. One end of the guide pin is inserted into the blind hole on the outer wall of the rotating rod and is connected to the bottom wall of the blind hole through a compression spring. The rotating rod is inserted into the guide blind hole of the first lead screw. The rotating rod and the end wall of the guide blind hole of the first lead screw are connected through a compression spring. The inner wall of the guide blind hole of the first lead screw is provided with a guide groove. The end of the guide groove is provided with a transition inclined surface. The guide groove corresponds to the guide pin. The guide pin is placed in the guide groove of the first lead screw.

[0009] Furthermore, the second outer sleeve is provided with a cavity, and the elongated guide groove of the second outer sleeve is connected to the cavity. A second lead screw and a second lead screw nut are installed in the cavity of the second outer sleeve. The two ends of the second lead screw are rotatably connected to the cavity, and the second lead screw and the second lead screw nut cooperate with each other. The second lead screw nut is hinged to one end of the second active connecting rod, and the other end of the second active connecting rod is hinged to the second clamping plate. The second lead screw is provided with through holes distributed along the axis.

[0010] Furthermore, a first guide sleeve is installed at one end of the second outer sleeve. The first guide sleeve is coaxially and fixedly connected to the second outer sleeve. The first outer sleeve is inserted into the first guide sleeve. The first outer sleeve is slidably connected to the first guide sleeve. The first outer sleeve and the second outer sleeve are arranged coaxially.

[0011] Furthermore, one end of the second lead screw is connected to the rotating assembly, which includes an internal gear ring, a transmission gear, and a driven gear. A rotating sleeve is fitted on the outer side of the first guide sleeve, and the rotating sleeve is rotatably connected to the first guide sleeve. The inner wall of the rotating sleeve is fixedly connected to the internal gear ring. The second lead screw is fixedly connected to the driven gear. The end wall of the second outer sleeve is rotatably connected to the transmission gear through a rotating shaft. The driven gear meshes externally with the transmission gear. An arc-shaped through hole is provided on the first guide sleeve, and a part of the transmission gear passes through the arc-shaped through hole of the first guide sleeve and meshes internally with the internal gear ring.

[0012] Furthermore, the other end of the second lead screw is connected to the rotating sleeve via a one-way bearing. The end of the rotating sleeve has a hexagonal prism structure, and the rotating sleeve is provided with through holes distributed along the axis. The rotating sleeve is rotatably connected to the through holes of the second outer sleeve.

[0013] Furthermore, the welding assembly includes a motor mounting bracket, a rotating support bracket, a horizontal telescopic bracket, a vertical telescopic bracket, and a welding torch. The rotating support bracket has a through hole at its center. A second guide sleeve and a connecting sleeve are fixedly installed at one end of the rotating support bracket, with the connecting sleeve located inside the second guide sleeve. The second guide sleeve, the connecting sleeve, and the central through hole of the rotating support bracket are arranged coaxially. The second guide sleeve is fitted onto a second outer sleeve. The other end wall of the second outer sleeve has multiple circumferentially distributed blind holes. A telescopic rod is fixedly installed within each blind hole. The inner rod of the telescopic rod is fixedly connected to the motor mounting bracket. The motor mounting bracket is fixedly connected to the outer ring of the frameless torque motor, and the inner ring of the frameless torque motor is fixedly connected to the connecting sleeve. Two symmetrically distributed support plates are fixedly installed on the rotating support bracket. A horizontal telescopic bracket is installed on each support plate. One end of the horizontal telescopic bracket is perpendicularly connected to the vertical telescopic bracket, and the vertical telescopic bracket is connected to the welding torch.

[0014] Furthermore, the horizontal telescopic frame includes a first screw, a first guide rod, a first connecting plate, and a first guide block. One end of the first screw is rotatably connected to the first connecting plate. The first guide block has a through hole, and the other end of the first screw passes through the through hole in the first guide block and is connected to a rotating handle. First guide rods are respectively installed on both sides of the first screw. One end of the first guide rod is connected to the first connecting plate, and the other end is connected to the first guide block. The end of the support plate has a threaded through hole and a guide through hole. The first screw is threadedly engaged with the threaded through hole of the support plate, and the first guide rod passes through the guide through hole on the support plate and slides with it.

[0015] Furthermore, the vertical telescopic frame includes a second screw, a second guide rod, a second connecting plate, and a second guide block. One end of the second screw is rotatably connected to the second guide block. The second connecting plate has a through hole, and the other end of the second screw passes through the through hole on the second connecting plate and is connected to a rotating handle. A second guide rod is installed on one side of the second screw, with one end connected to the second connecting plate and the other end connected to the second guide block. The first guide block has a threaded through hole and a guide through hole. The second screw is threaded into the threaded through hole of the first guide block, and the second guide rod passes through the guide through hole on the first guide block and slides with it. The second guide block has a guide blind hole. A third guide block and a welding torch are installed on the connecting frame. The third guide block is inserted into the guide blind hole of the second guide block and slides with it. The welding head of the welding torch faces the flange and pipe position. An electromagnetic push rod is installed in the guide blind hole of the second guide block, and the telescopic rod of the electromagnetic push rod is connected to the third guide block.

[0016] Compared with the prior art, the present invention has the following outstanding advantages:

[0017] 1. In the pipe clamping and positioning assembly of the present invention, the first outer sleeve and the second outer sleeve of the flange clamping and positioning assembly are arranged coaxially. When the pipe clamping and positioning assembly is clamped and fixed in the pipe cavity of the pipe and the flange clamping and positioning assembly is clamped and fixed in the pipe cavity of the flange, the flange and the pipe can be arranged coaxially, which facilitates positioning.

[0018] 2. Before welding the flange and pipe joint with the welding gun of the present invention, start the telescopic rod to move the rotating support frame away from the flange by a certain distance to prevent the rotating support frame from contacting the flange during rotation and causing friction, thereby interfering with the rotating support frame.

[0019] 3. The hexagonal blind hole of the rotating rod and the hexagonal prism structure of the rotating sleeve of the present invention cooperate with the rotating wrench. When the rotating wrench is rotated, the rotating wrench simultaneously drives the rotating sleeve and the rotating rod to rotate. The rotating rod drives the first lead screw to rotate. The first lead screw drives the first lead screw nut to move along the first lead screw, which drives the first clamping plate to expand through the first active connecting rod. At this time, due to the action of the one-way bearing, the rotating sleeve will not drive the second lead screw to rotate. When the rotating wrench is rotated in the opposite direction, the rotating wrench simultaneously drives the rotating sleeve and the rotating rod to rotate. The rotating rod drives the first lead screw to rotate in the opposite direction, and the first clamping plate contracts. At this time, due to the action of the one-way bearing, the rotating sleeve drives the second lead screw to rotate in the opposite direction, causing the second clamping plate to contract as well. Thus, the first clamping plate and the second clamping plate can contract simultaneously, making it easy to remove the invention from the flange and pipe. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is the front view of the present invention;

[0022] Figure 3 This is a top view of the present invention;

[0023] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0024] Figure 5 This is a schematic diagram of the internal structure of the present invention;

[0025] Figure 6 yes Figure 5 A magnified view of part B in the middle section;

[0026] Figure 7 This is a schematic diagram of the flange clamping and positioning assembly in this invention;

[0027] Figure 8 This is a schematic diagram of the rotating wrench part in this invention;

[0028] 1. Pipe clamping and positioning assembly; 11. First clamping plate; 12. First driving connecting rod; 13. First driven connecting rod; 14. First lead screw; 15. First outer sleeve; 16. Adjusting screw; 17. Rotating rod; 171. Guide pin; 18. First lead screw nut; 2. Flange clamping and positioning assembly; 21. Rotating assembly; 211. Rotating sleeve; 212. Internal gear ring; 213. Driven gear; 214. Transmission gear; 215. Fixed sleeve; 216. Handle rod; 22. Second driving connecting rod; 23. Second clamping plate; 24. Second driven connecting rod; 25. Second lead screw; 26. Second lead screw nut; 27. Rotating sleeve; 28. 29. Second outer sleeve; 3. First guide sleeve; 4. Welding assembly; 5. Vertical telescopic frame; 6. Second connecting plate; 7. Second guide block; 8. Second screw; 9. Second guide rod; 10. Third guide block; 11. Connecting frame; 12. Horizontal telescopic frame; 13. First connecting plate; 14. First guide rod; 15. First screw; 16. First guide block; 27. Motor fixing frame; 28. Second guide sleeve; 39. Connecting sleeve; 20. Frameless torque motor; 21. Rotating support frame; 32. Welding torch; 43. Rotating wrench; 54. Rotating handle; 65. Wrench sleeve; 76. Wrench head. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-3 As shown, the present invention includes a pipe clamping and positioning assembly 1, a flange clamping and positioning assembly 2, and a welding assembly 3.

[0031] The pipe clamping and positioning assembly 1 is slidably connected to the flange clamping and positioning assembly 2, and the end of the flange clamping and positioning assembly 2 is connected to the welding assembly 3.

[0032] The pipe clamping and positioning assembly 1 includes a first outer sleeve 15, a first lead screw 14, a first lead screw nut 18, a rotating rod 17, a first driving connecting rod 12, a first driven connecting rod 13, and a first clamping plate 11. The first outer sleeve 15 has a cavity, with a through hole on one end wall and a blind hole on the other end wall. The outer wall of the first outer sleeve 15 has a plurality of elongated guide grooves arranged in a uniform circular pattern. The elongated guide grooves are arranged along the axis of the first outer sleeve 15 and are connected to the cavity.

[0033] Each elongated guide groove of the first outer sleeve 15 is hinged to one end of the two first driven connecting rods 13 by a pin. The other end of the two first driven connecting rods 13 is hinged to the first clamping plate 11. The two first driven connecting rods 13 are arranged in parallel. The first clamping plate 11 is set parallel to the axis of the first outer sleeve 15, so that the two first driven connecting rods 13, the first clamping plate 11 and the first outer sleeve 15 form a parallelogram mechanism. The first clamping plate 11 can always remain parallel to the axis of the first outer sleeve 15 during the movement.

[0034] like Figure 5 As shown, a first lead screw 14 is installed inside the cavity of the first outer sleeve 15. One end of the first lead screw 14 is rotatably connected to the through hole of the cavity, and the other end of the first lead screw 14 is rotatably connected to the blind hole of the cavity. The first lead screw 14 cooperates with a first lead screw nut 18. Multiple first guide plates are fixedly installed on the outer wall of the first lead screw nut 18. The first guide plates are slidably connected to the corresponding elongated guide grooves of the first outer sleeve 15. One end of the first guide plate is hinged to one end of the first active connecting rod 12, and the other end of the first active connecting rod 12 is hinged to the first clamping plate 11. One end of the first lead screw 14 is provided with a guide blind hole, and the end wall of the guide blind hole is provided with a threaded blind hole. When the first lead screw 14 rotates, the first lead screw nut 18 moves along the first lead screw 14, which drives the first clamping plate 11 to move through the first active connecting rod 12, causing the first clamping plate 11 to expand or contract.

[0035] like Figure 7 As shown, the flange clamping and positioning assembly 2 includes a second outer sleeve 28, a second lead screw 25, a second lead screw nut 26, a second driving connecting rod 22, a second driven connecting rod 24, and a second clamping plate 23. The second outer sleeve 28 has a cavity, and through holes are provided on the two end walls of the cavity. The outer wall of the second outer sleeve 28 has a plurality of elongated guide grooves arranged in a uniform circular shape. The elongated guide grooves are arranged along the axis of the second outer sleeve 28 and are connected to the cavity.

[0036] Each elongated guide groove of the second outer sleeve 28 is hinged to one end of the two second driven connecting rods 24 by a pin, and the other end of the two second driven connecting rods 24 is hinged to the second clamping plate 23. The two second driven connecting rods 24 are arranged in parallel, and the second clamping plate 23 is arranged parallel to the axis of the second outer sleeve 28, so that the two second driven connecting rods 24, the second clamping plate 23 and the second outer sleeve 28 form a parallelogram mechanism. The second clamping plate 23 can always remain parallel to the axis of the first outer sleeve 15 during the movement.

[0037] A second lead screw 25 and a second lead screw nut 26 are installed inside the cavity of the second outer sleeve 28. Both ends of the second lead screw 25 are rotatably connected to the through holes of the cavity. The second lead screw 25 and the second lead screw nut 26 cooperate with each other. Multiple second guide plates are fixedly installed on the outer wall of the second lead screw nut 26. The second guide plates are slidably connected to the corresponding elongated guide grooves of the second outer sleeve 28. One end of the second guide plate is hinged to the second active connecting rod 22, and the other end of the second active connecting rod 22 is hinged to the second clamping plate 23. The second lead screw 25 has through holes distributed along its axis. When the second lead screw 25 rotates, the second lead screw nut 26 moves along the second lead screw 25, driving the second clamping plate 23 to move via the second active connecting rod 22, causing the second clamping plate 23 to expand or contract.

[0038] The second outer sleeve 28 is provided with a first guide sleeve 29 at one end. The first guide sleeve 29 is coaxially and fixedly connected to the second outer sleeve 28. The first outer sleeve 15 is inserted into the first guide sleeve 29 at one end with a through hole. The first outer sleeve 15 is slidably connected to the first guide sleeve 29. The first outer sleeve 15 and the second outer sleeve 28 are arranged coaxially.

[0039] One end of the second lead screw 25 is connected to the rotating assembly 21, which can drive the second lead screw 25 to rotate. In this embodiment, the rotating assembly 21 includes an internal gear ring 212, a transmission gear 214, and a driven gear 213. A rotating sleeve 211 is fitted on the outside of the first guide sleeve 29. The rotating sleeve 211 is rotatably connected to the first guide sleeve 29. The inner wall of the rotating sleeve 211 is fixedly connected to the internal gear ring 212. The second lead screw 25 is fixedly connected to the gear hole of the driven gear 213. The end wall of the second outer sleeve 28 is rotatably connected to the gear hole of the transmission gear 214 through a rotating shaft. The driven gear 213 meshes externally with the transmission gear 214. The first guide sleeve 29 is provided with an arc-shaped through hole. A part of the transmission gear 214 passes through the arc-shaped through hole of the first guide sleeve 29 and meshes internally with the internal gear ring 212.

[0040] The other end of the second lead screw 25 is connected to the rotating sleeve 27 via a one-way bearing. The end of the rotating sleeve 27 has a hexagonal prism structure and through holes distributed along the axis. The rotating sleeve 27 is rotatably connected to the through holes of the second outer sleeve 28.

[0041] The outer wall of the rotating sleeve 211 is provided with two symmetrically distributed fixed sleeves 215. The fixed sleeves 215 have threaded holes, and one end of the handle rod 216 has an external thread. The threaded end of the handle rod 216 engages with the threaded hole of the fixed sleeve 215, allowing the rotating sleeve 211 to be easily rotated. Rotating the rotating sleeve 211 causes the internal gear ring 212 to rotate, which in turn causes the transmission gear 214 to rotate. The transmission gear 214 then causes the driven gear 213 to rotate, and the driven gear 213 in turn causes the second lead screw 25 to rotate.

[0042] The other end of the second outer sleeve 28 is connected to the welding assembly 3. The welding assembly 3 includes a motor fixing frame 33, a rotating support frame 37, a horizontal telescopic frame 32, a vertical telescopic frame 31, and a welding torch 38. The rotating support frame 37 has a through hole at its center. A second guide sleeve 34 and a connecting sleeve 35 are fixedly installed at one end of the rotating support frame 37. The connecting sleeve 35 is located inside the second guide sleeve 34. The second guide sleeve 34, the connecting sleeve 35, and the central through hole of the rotating support frame 37 are arranged coaxially. The second guide sleeve 34 is fitted onto one end of the second outer sleeve 28.

[0043] The other end wall of the second outer sleeve 28 is provided with a plurality of uniformly distributed circumferential mounting blind holes. A telescopic rod is fixedly installed in the mounting blind holes. The inner rod of the telescopic rod is fixedly connected to the motor mounting bracket 33. The motor mounting bracket 33 is fixedly connected to the outer ring of the frameless torque motor 36. The inner ring of the frameless torque motor 36 is fixedly connected to the connecting sleeve 35. When the frameless torque motor 36 rotates, it can drive the rotating support frame 37 to rotate through the connecting sleeve 35.

[0044] Two symmetrically distributed support plates are fixedly installed on the rotating support frame 37. A horizontal telescopic frame 32 is installed on each support plate. One end of the horizontal telescopic frame 32 is vertically connected to the vertical telescopic frame 31. The vertical telescopic frame 31 is connected to the welding torch 38.

[0045] The horizontal telescopic frame 32 includes a first screw 323, a first guide rod 322, a first connecting plate 321, and a first guide block 324. One end of the first screw 323 is rotatably connected to the first connecting plate 321. The first guide block 324 has a through hole. The other end of the first screw 323 passes through the through hole in the first guide block 324 and is connected to a rotating handle. The first screw 323 is rotatably connected to the through hole in the first guide block 324. The first guide rod 322 is installed on both sides of the first screw 323. One end of the first guide rod 322 is connected to the first connecting plate 321, and the other end is connected to the first guide block 324.

[0046] The end of the support plate is provided with a threaded through hole and a guide through hole. The first screw 323 is threadedly engaged with the threaded through hole of the support plate, and the first guide rod 322 passes through the guide through hole on the support plate and slides with it.

[0047] The vertical telescopic frame 31 includes a second screw 313, a second guide rod 314, a second connecting plate 311, and a second guide block 312. One end of the second screw 313 is rotatably connected to the second guide block 312. The second connecting plate 311 has a through hole. The other end of the second screw 313 passes through the through hole on the second connecting plate 311 and is connected to a rotating handle. The second screw 313 is rotatably connected to the through hole of the second connecting plate 311. The second guide rod 314 is installed on one side of the second screw 313. One end of the second guide rod 314 is connected to the second connecting plate 311, and the other end is connected to the second guide block 312.

[0048] The first guide block 324 is provided with a threaded through hole and a guide through hole. The second screw 313 is threadedly engaged with the threaded through hole of the first guide block 324. The second guide rod 314 passes through the guide through hole on the first guide block 324 and slides with it.

[0049] like Figure 4 As shown, the second guide block 312 has a guide blind hole, and the connecting frame 316 is equipped with a third guide block 315 and a welding torch 38. The third guide block 315 is inserted into the guide blind hole of the second guide block 312 and slides with it. The welding head of the welding torch 38 faces the flange and the pipe. An electromagnetic push rod is installed in the guide blind hole of the second guide block 312, and the telescopic rod of the electromagnetic push rod is fixedly connected to the third guide block 315. When the electromagnetic push rod is activated, it can drive the welding torch 38 to reciprocate along the axial direction of the pipe and the flange.

[0050] like Figure 6As shown, one end of the rotating rod 17 has a regular hexagonal blind hole, and the other end is fixedly connected to the adjusting screw 16. The rotating rod 17 and the adjusting screw 16 are arranged coaxially. The diameter of the adjusting screw 16 is smaller than the diameter of the rotating rod 17. The adjusting screw 16 corresponds to the threaded blind hole of the first lead screw 14. The outer wall of the other end of the rotating rod 17 has a plurality of blind holes evenly distributed in a circular shape. One end of the guide pin 171 is inserted into the blind hole on the outer wall of the rotating rod 17 and is connected to the bottom wall of the blind hole through a compression spring. One end of the rotating rod 17 passes through the second lead screw 25 and the rotating rod 17. The rotating rod 17 is rotatably connected to the through hole of the movable sleeve 27, and the other end is inserted into the guide blind hole of the first lead screw 14. The rotating rod 17 is connected to the end wall of the guide blind hole of the first lead screw 14 by a compression spring. The inner wall of the guide blind hole of the first lead screw 14 is provided with a plurality of guide grooves evenly distributed in a circular shape. The end of the guide groove away from the opening of the guide blind hole of the first lead screw 14 is provided with an inclined surface. The inclined surface transitions the bottom wall of the guide groove to the inner wall of the guide blind hole. The guide groove corresponds to the guide pin 171, and the guide pin 171 is placed in the guide groove of the first lead screw 14. When the rotating rod 17 is pressed, the guide pin 171 slides from the inclined surface of the guide groove to the inner wall of the guide blind hole. When the adjusting screw 16 contacts the threaded blind hole of the first lead screw 14, rotating the rotating rod 17 can make the adjusting screw 16 engage with the threaded blind hole of the first lead screw 14.

[0051] like Figure 8 As shown, the hexagonal blind hole of the rotating rod 17 and the hexagonal prism structure of the rotating sleeve 27 cooperate with the rotating wrench 4. The rotating wrench 4 includes a wrench sleeve 42, a wrench head 43 and a rotating handle 41. One end of the wrench sleeve 42 is provided with a hexagonal blind hole. The wrench head 43 is vertically fixed at the center of the bottom of the hexagonal blind hole of the wrench sleeve 42. The wrench head 43 is hexagonal prism-shaped. The hexagonal blind hole of the wrench sleeve 42 corresponds to the hexagonal prism structure at the end of the rotating sleeve 27. The wrench head 43 corresponds to the hexagonal blind hole of the rotating rod 17. When the wrench head 43 of the rotary wrench 4 is inserted into the regular hexagonal blind hole of the rotating rod 17, the hexagonal prism end of the rotating sleeve 27 is inserted into the regular hexagonal blind hole of the wrench sleeve 42. When the rotary wrench 4 is rotated, the rotary wrench 4 simultaneously drives the rotating sleeve 27 and the rotating rod 17 to rotate. The rotating rod 17 drives the first lead screw 14 to rotate. The first lead screw 14 drives the first lead screw nut 18 to move along the first lead screw 14, which drives the first clamping plate 11 to expand through the first active connecting rod 12. At this time, due to the action of the one-way bearing, the rotating sleeve 27 will not drive the second lead screw 25 to rotate. When the rotary wrench 4 is rotated in the opposite direction, the rotary wrench 4 simultaneously drives the rotating sleeve 27 and the rotating rod 17 to rotate. The rotating rod 17 drives the first lead screw 14 to rotate in the opposite direction, and the first clamping plate 11 contracts. At this time, due to the action of the one-way bearing, the rotating sleeve 27 drives the second lead screw 25 to rotate in the opposite direction, causing the second clamping plate 23 to contract as well.

[0052] The operating procedure is as follows: When using this invention, place the rotating support frame 37 on the ground, with the pipe clamping and positioning assembly 1 and the flange clamping and positioning assembly 2 facing upwards. Place the flange on the outside of the flange clamping and positioning assembly 2, with the flange flange end resting on the rotating support frame 37. Rotate the rotating sleeve 211, which drives the internal gear ring 212 to rotate. The internal gear ring 212 drives the transmission gear 214 to rotate, which drives the driven gear 213 to rotate. The driven gear 213 drives the second lead screw 25 to rotate, and the second lead screw nut 26 moves along the second lead screw 25. Through the second active connecting rod 22, it drives the second clamping plate 23 to move, causing the second clamping plate 23 to expand. Multiple second clamping plates 23 press against the inner wall of the flange, fixing the flange on the flange clamping and positioning assembly 2. At this time, the axis of the flange coincides with the axis of the second outer sleeve 28. Next, remove the handle rod 216 from the rotating sleeve 211, lift the present invention and the flange, insert the pipe clamping and positioning assembly 1 into the pipe cavity, so that the flange contacts the pipe, insert the wrench head 43 of the rotating wrench 4 into the regular hexagonal blind hole of the rotating rod 17, insert the hexagonal prism end of the rotating sleeve 27 into the regular hexagonal blind hole of the wrench sleeve 42, rotate the rotating wrench 4, and the rotating wrench 4 simultaneously drives the rotating sleeve 27 and the rotating rod 17 to rotate, the rotating rod 17 drives the first lead screw 14 to rotate, the first lead screw 14 drives the first lead screw nut 18 to move along the first lead screw 14, and through the first active connecting rod 12 drives the first clamping plate 11 to expand, so that the first clamping plate 11 clamps the inner wall of the pipe cavity, so that the pipe clamping and positioning assembly 1 is fixedly connected to the pipe. If there is a gap between the flange and the pipe, press and rotate the wrench 4. The wrench 4 drives the flange to move towards the pipe end through the flange clamping and positioning assembly 2, so that the flange and the pipe are in contact. During the pressing process, the rotating rod 17 moves along the guide blind hole of the first lead screw 14. The guide pin 171 slides from the inclined surface of the guide groove to the inner wall of the guide blind hole. When the adjusting screw 16 contacts the threaded blind hole of the first lead screw 14, the guide pin 171 disengages from the guide groove. Then, rotate the rotating rod 17, and the first lead screw 14 stops rotating. The adjusting screw 16 engages with the threaded blind hole of the first lead screw 14, so that the flange clamping and positioning assembly moves along the first outer sleeve 15 of the pipe clamping and positioning assembly 1. By tightening the adjusting screw 16 and the threaded blind hole of the first lead screw 14, the flange and the pipe can be tightly fitted. Start the telescopic rod to move the rotating support frame 37 away from the flange by a certain distance. Adjust the horizontal telescopic frame 32 and the vertical telescopic frame 31 to move the welding torch 38 to the position of the flange and the pipe joint. Start the frameless torque motor 36 to drive the rotating support frame 37 to rotate. The rotating support frame 37 drives the welding torch 38 to weld at the joint.

[0053] It should be noted that the specific embodiments of the present invention have been described in detail. For those skilled in the art, various obvious changes made to it without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. A rapid welding mechanism for alloy forgings, characterized in that: The assembly includes a pipe clamping and positioning assembly (1), a flange clamping and positioning assembly (2), and a welding assembly (3). The pipe clamping and positioning assembly (1) is slidably connected to the flange clamping and positioning assembly (2), and the end of the flange clamping and positioning assembly (2) is connected to the welding assembly (3). The pipe clamping and positioning assembly (1) includes a first outer sleeve (15), a first driven connecting rod (13), and a first clamping plate (11). The outer wall of the first outer sleeve (15) is provided with a plurality of elongated guide grooves, which are arranged along the axis of the first outer sleeve (15). The first outer sleeve (15) is provided with a cavity. The length of the first outer sleeve (15) is... The strip-shaped guide groove is connected to its cavity; a first lead screw (14) is installed in the cavity of the first outer sleeve (15), one end of the first lead screw (14) is rotatably connected to the cavity, the first lead screw (14) cooperates with the first lead screw nut (18), the first lead screw nut (18) is hinged to one end of the first active connecting rod (12), and the other end of the first active connecting rod (12) is hinged to the first clamping plate (11); each long strip-shaped guide groove of the first outer sleeve (15) is respectively hinged to one end of two first driven connecting rods (13), and the other end of the two first driven connecting rods (13) is hinged to the first clamping plate (11), and the two first driven connecting rods (13) are flat. The first clamping plate (11) and the first outer sleeve (15) are arranged in a row, with the first clamping plate (11) and the first outer sleeve (15) having their axes parallel. One end of the first lead screw (14) is provided with a guide blind hole, and the end wall of the guide blind hole is provided with a threaded blind hole. One end of the rotating rod (17) is provided with a regular hexagonal blind hole, and the other end is coaxially fixedly connected to the adjusting screw (16). The adjusting screw (16) corresponds to the threaded blind hole of the first lead screw (14). The outer wall of the other end of the rotating rod (17) is provided with a blind hole. One end of the guide pin (171) is inserted into the blind hole on the outer wall of the rotating rod (17) and is connected to the bottom wall of the blind hole through a compression spring. The rotating rod (17) is inserted into the first lead screw (14). Inside the guide blind hole, the rotating rod (17) is connected to the end wall of the guide blind hole of the first lead screw (14) by a compression spring. The inner wall of the guide blind hole of the first lead screw (14) is provided with a guide groove. The end of the guide groove is provided with a transition inclined surface. The guide groove corresponds to the guide pin (171). The guide pin (171) is placed in the guide groove of the first lead screw (14). The flange clamping and positioning assembly (2) includes a second outer sleeve (28), a second driven connecting rod (24), and a second clamping plate (23). The outer wall of the second outer sleeve (28) is provided with a plurality of long strip guide grooves. The long strip guide grooves are arranged along the axis of the second outer sleeve (28).The second outer sleeve (28) is provided with a cavity, and the elongated guide groove of the second outer sleeve (28) is connected to the cavity. A second lead screw (25) and a second lead screw nut (26) are installed in the cavity of the second outer sleeve (28). The two ends of the second lead screw (25) are rotatably connected to the cavity. The second lead screw (25) and the second lead screw nut (26) cooperate with each other. The second lead screw nut (26) is hinged to one end of the second active connecting rod (22), and the other end of the second active connecting rod (22) is connected to the second The clamping plate (23) is hinged, and the second lead screw (25) is provided with through holes distributed along the axis; each elongated guide groove of the second outer sleeve (28) is hinged to one end of the two second driven connecting rods (24), and the other end of the two second driven connecting rods (24) is hinged to the second clamping plate (23). The two second driven connecting rods (24) are arranged in parallel, and the second clamping plate (23) and the axis of the second outer sleeve (28) are set parallel to each other; the other end of the second lead screw (25) is connected to the rotating sleeve (27) through a one-way bearing. The rotating sleeve (27) has a hexagonal prism structure at its end, and through holes distributed along the axis are provided on the rotating sleeve (27). The rotating sleeve (27) is rotatably connected to the through holes of the second outer sleeve (28). The first outer sleeve (15) and the second outer sleeve (28) are slidably connected on the same axis. The other end of the second outer sleeve (28) is connected to the welding assembly (3). The regular hexagonal blind hole of the rotating rod (17) and the hexagonal prism structure of the rotating sleeve (27) cooperate with the rotating wrench (4) to rotate. The adjustable wrench (4) includes a wrench sleeve (42), a wrench head (43), and a rotating handle (41). One end of the wrench sleeve (42) has a regular hexagonal blind hole. The wrench head (43) is vertically fixed at the center of the bottom of the regular hexagonal blind hole of the wrench sleeve (42). The wrench head (43) is hexagonal prism-shaped. The regular hexagonal blind hole of the wrench sleeve (42) corresponds to the hexagonal prism structure at the end of the rotating sleeve (27), and the wrench head (43) corresponds to the regular hexagonal blind hole of the rotating rod (17).

2. The rapid welding mechanism for alloy forgings according to claim 1, characterized in that: The second outer sleeve (28) is equipped with a first guide sleeve (29) at one end. The first guide sleeve (29) and the second outer sleeve (28) are coaxially fixedly connected. The first outer sleeve (15) is inserted into the first guide sleeve (29). The first outer sleeve (15) and the first guide sleeve (29) are slidably connected. The first outer sleeve (15) and the second outer sleeve (28) are coaxially arranged.

3. The rapid welding mechanism for alloy forgings according to claim 1, characterized in that: One end of the second lead screw (25) is connected to the rotating assembly (21). The rotating assembly (21) includes an internal gear ring (212), a transmission gear (214), and a driven gear (213). A rotating sleeve (211) is fitted on the outside of the first guide sleeve (29). The rotating sleeve (211) is rotatably connected to the first guide sleeve (29). The inner wall of the rotating sleeve (211) is fixedly connected to the internal gear ring (212). The second lead screw (25) is fixedly connected to the driven gear (213). The end wall of the second outer sleeve (28) is rotatably connected to the transmission gear (214) through a rotating shaft. The driven gear (213) meshes externally with the transmission gear (214). The first guide sleeve (29) is provided with an arc-shaped through hole. A part of the transmission gear (214) passes through the arc-shaped through hole of the first guide sleeve (29) and meshes internally with the internal gear ring (212).

4. The rapid welding mechanism for alloy forgings according to claim 1, characterized in that: The welding assembly (3) includes a motor mounting bracket (33), a rotating support bracket (37), a horizontal telescopic bracket (32), a vertical telescopic bracket (31), and a welding torch (38). The rotating support bracket (37) has a through hole at its center. A second guide sleeve (34) and a connecting sleeve (35) are fixedly installed at one end of the rotating support bracket (37). The connecting sleeve (35) is located inside the second guide sleeve (34). The second guide sleeve (34), the connecting sleeve (35), and the central through hole of the rotating support bracket (37) are arranged coaxially. The second guide sleeve (34) is fitted onto the second outer sleeve (28). The other end wall of the cylinder (28) is provided with a number of uniformly distributed blind holes in a circular shape. A telescopic rod is fixedly installed in the blind hole. The inner rod of the telescopic rod is fixedly connected to the motor mounting bracket (33). The motor mounting bracket (33) is fixedly connected to the outer ring of the frameless torque motor (36). The inner ring of the frameless torque motor (36) is fixedly connected to the connecting sleeve (35). Two symmetrically distributed support plates are fixedly installed on the rotating support frame (37). A horizontal telescopic frame (32) is installed on each support plate. One end of the horizontal telescopic frame (32) is vertically connected to the vertical telescopic frame (31). The vertical telescopic frame (31) is connected to the welding torch (38).

5. The rapid welding mechanism for alloy forgings according to claim 4, characterized in that: The horizontal telescopic frame (32) includes a first screw (323), a first guide rod (322), a first connecting plate (321), and a first guide block (324). One end of the first screw (323) is rotatably connected to the first connecting plate (321). The first guide block (324) has a through hole. The other end of the first screw (323) passes through the through hole on the first guide block (324) and is connected to the rotating handle. The first guide rod (322) is installed on both sides of the first screw (323). One end of the first guide rod (322) is connected to the first connecting plate (321), and the other end is connected to the first guide block (324). The end of the support plate has a threaded through hole and a guide through hole. The first screw (323) is threadedly engaged with the threaded through hole of the support plate. The first guide rod (322) passes through the guide through hole on the support plate and is slidably engaged with it.

6. The rapid welding mechanism for alloy forgings according to claim 5, characterized in that: The vertical telescopic frame (31) includes a second screw (313), a second guide rod (314), a second connecting plate (311), and a second guide block (312). One end of the second screw (313) is rotatably connected to the second guide block (312). The second connecting plate (311) has a through hole, and the other end of the second screw (313) passes through the through hole on the second connecting plate (311) and is connected to a rotating handle. The second guide rod (314) is installed on one side of the second screw (313). One end of the second guide rod (314) is connected to the second connecting plate (311), and the other end is connected to the second guide block (312). The first guide block (324) has a threaded through hole. The second screw (313) is threadedly engaged with the threaded through hole of the first guide block (324), and the second guide rod (314) passes through the guide through hole on the first guide block (324) and slides with it; the second guide block (312) is provided with a guide blind hole, and the connecting frame (316) is equipped with a third guide block (315) and a welding torch (38). The third guide block (315) is inserted into the guide blind hole of the second guide block (312) and slides with it. The welding head of the welding torch (38) faces the flange and the pipe position. An electromagnetic push rod is installed in the guide blind hole of the second guide block (312), and the telescopic rod of the electromagnetic push rod is connected to the third guide block (315).

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