Rapid welding mechanism for alloy forgings

Abstract

The invention discloses a rapid welding mechanism for alloy forgings, and belongs to the technical field of alloy forgings welding, the rapid welding mechanism comprises a pipeline clamping and positioning assembly, a flange clamping and positioning assembly and a welding assembly, the pipeline clamping and positioning assembly is slidably connected with the flange clamping and positioning assembly, and the end part of the flange clamping and positioning assembly is connected with the welding assembly; the pipeline clamping and positioning assembly comprises a first outer sleeve, first driven connecting rods and a first clamping plate, a plurality of long-strip-shaped guide grooves are formed in the outer wall of the first outer sleeve and are arranged along the axis of the first outer sleeve, and the interior of each long-strip-shaped guide groove of the first outer sleeve is hinged to one end of each first driven connecting rod; the other ends of the two first driven connecting rods are hinged to the first clamping plate, the two first driven connecting rods are arranged in parallel, and the first clamping plate is parallel to the axis of the first outer sleeve. Compared with the prior art, the welding fixture has the characteristics of quickly clamping and positioning the flange and the pipeline and welding the flange and the pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of alloy forge welding, in particular to a rapid welding mechanism for alloy forge. BACKGROUND

[0002] In current industrial production and pipeline connection operations, when alloy necked flange and pipeline need to be welded, the construction personnel will first carry out spot welding. Spot welding, as the initial step of welding, plays a key role in positioning and preliminary fixation.

[0003] After completing spot welding, a rotary welding device is used to perform formal welding work. This rotary welding device is widely used in the field of pipeline welding, and usually consists of a motor and a workbench. The motor serves as a power source and drives the workbench to rotate through a transmission mechanism. The pipeline to be welded is firmly fixed on the workbench, and when the motor starts and the workbench begins to rotate smoothly, the pipeline will also rotate synchronously. The welding gun remains stationary and is precisely positioned at the appropriate location to ensure the accuracy and stability of the welding process. During the continuous rotation of the pipeline and the necked flange with the workbench, the welding gun will weld the connection part of the pipeline and the necked flange according to the preset welding parameters, thereby completing the welding of the circumferential weld.

[0004] However, in actual production operations, not all situations are suitable for the above-mentioned rotary welding device. When the pipeline is too long, many problems will be encountered. Since the length of the pipeline exceeds the loadable range of the workbench of the rotary welding device, the pipeline cannot be completely installed on the workbench and rotated with the workbench. At this time, if the above-mentioned rotary welding device is forcibly used for welding, not only the welding quality cannot be guaranteed, but also problems such as pipeline displacement and uneven welds may occur during welding, and even safety accidents may be caused. Therefore, when the pipeline is too long to be installed on the workbench and rotated with the workbench, the above-mentioned rotary welding device cannot be used for welding. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art and provide a rapid welding mechanism for alloy forge, which can quickly clamp and position the flange and pipeline and perform welding.

[0006] The utility model provides a kind of quick welding mechanism of alloy forge piece, including pipeline clamping positioning assembly, flange clamping positioning assembly and welding assembly, the pipeline clamping positioning assembly is slidably connected with flange clamping positioning assembly, and 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, the outer wall of first outer sleeve is equipped with multiple long strip-shaped guide slots, and long strip-shaped guide slot is arranged along the axis of first outer sleeve;The one end of two first driven links is respectively hinged in each long strip-shaped guide slot of first outer sleeve, 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;The flange clamping positioning assembly includes second outer sleeve, second driven link and second clamping plate, the outer wall of second outer sleeve is equipped with multiple long strip-shaped guide slots, and long strip-shaped guide slot is arranged along the axis of second outer sleeve;The one end of two second driven links is respectively hinged in each long strip-shaped guide slot of second outer sleeve, and the other end of two second driven links is hinged with second clamping plate, and two second driven links are arranged in parallel, and second clamping plate is arranged in parallel with the axis of second outer sleeve;The first outer sleeve is coaxially slidably connected with second outer sleeve;The other end of second outer sleeve is connected with welding assembly.

[0007] Further, the first outer sleeve is provided with a cavity, and the long strip-shaped guide slots of the first outer sleeve are communicated with the cavity;A first screw rod is installed in the cavity of the first outer sleeve, one end of the first screw rod is rotatably connected with the cavity, the first screw rod cooperates with a first screw nut, the first screw nut is hinged with one end of a first driving link, and the other end of the first driving link is hinged with the first clamping plate.

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

[0009] Further, the second outer sleeve is provided with a cavity, and the long strip-shaped guide slots of the second outer sleeve are communicated with the cavity;A second screw rod and a second screw nut are installed in the cavity of the second outer sleeve, two ends of the second screw rod are rotatably connected with the cavity, the second screw rod cooperates with the second screw nut, the second screw nut is hinged with one end of a second driving link, the other end of the second driving link is hinged with the second clamping plate, and a through hole is formed in the second screw rod along the axis.

[0010] Further, one end of the second outer sleeve is provided with a first guide sleeve, the first guide sleeve is coaxially fixedly connected with the second outer sleeve, the first outer sleeve is inserted into the first guide sleeve, the first outer sleeve is slidably connected with the first guide sleeve, and the first outer sleeve is coaxially arranged with the second outer sleeve.

[0011] Further, one end of the second outer sleeve is provided with a first guide sleeve, the first guide sleeve is coaxially fixedly connected with the second outer sleeve, the first outer sleeve is inserted into the first guide sleeve, the first outer sleeve is slidably connected with the first guide sleeve, and the first outer sleeve is coaxially arranged with the second outer sleeve.

[0012] Further, the other end of the second screw rod is connected with the rotating sleeve through a one-way bearing, the end of the rotating sleeve is in a hexagonal prism structure, the rotating sleeve is provided with a through hole distributed along the axis, and the rotating sleeve is rotatably connected with the through hole of the second outer sleeve.

[0013] Further, the welding assembly comprises a motor fixing frame, a rotating support frame, a horizontal telescopic frame, a vertical telescopic frame and a welding gun, the center of the rotating support frame is provided with a through hole, one end of the rotating support frame is fixedly provided with a second guide sleeve and a connecting sleeve respectively, the connecting sleeve is located in the second guide sleeve, the second guide sleeve, the connecting sleeve and the center through hole of the rotating support frame are coaxially arranged, and the second guide sleeve is sleeved on the second outer sleeve; a plurality of circumferentially and uniformly distributed mounting blind holes are arranged on the other end wall of the second outer sleeve, the mounting blind holes are fixedly provided with telescopic rods, the inner rods of the telescopic rods are fixedly connected with the motor fixing frame, the motor fixing frame is fixedly connected with the outer ring of the frameless torque motor, and the inner ring of the frameless torque motor is fixedly connected with the connecting sleeve; the rotating support frame is fixedly provided with two symmetrically distributed supporting plates, the horizontal telescopic frame is arranged on each supporting plate, one end of the horizontal telescopic frame is perpendicularly connected with the vertical telescopic frame, and the vertical telescopic frame is connected with the welding gun.

[0014] Further, the horizontal telescopic frame comprises a first screw rod, a first guide rod, a first connecting plate and a first guide block, one end of the first screw rod is rotatably connected with the first connecting plate, the first guide block is provided with a through hole, the other end of the first screw rod passes through the through hole of the first guide block and is connected with a rotating handle, the first guide rod is arranged on the two sides of the first screw rod, one end of the first guide rod is connected with the first connecting plate, and the other end is connected with the first guide block; the end of the supporting plate is provided with a threaded through hole and a guide through hole, the first screw rod is in threaded connection with the threaded through hole of the supporting plate, and the first guide rod passes through the guide through hole of the supporting plate and is in sliding connection with the guide through hole.

[0015] Further, the vertical telescopic frame comprises a second screw rod, a second guide rod, a second connecting plate and a second guide block, one end of the second screw rod is rotationally connected with the second guide block, the second connecting plate is provided with a through hole, the other end of the second screw rod is connected with the rotating handle through the through hole of the second connecting plate, the second guide rod is installed on one side of the second screw rod, one end of the second guide rod is connected with the second connecting plate, and the other end is connected with the second guide block; the first guide block is provided with a threaded hole and a guide hole, the second screw rod is threadedly matched with the threaded hole of the first guide block, and the second guide rod passes through the guide hole of the first guide block and is slidably matched with the first guide block; the second guide block is provided with a guide blind hole, the connecting frame is provided with a third guide block and a welding gun, the third guide block is inserted into the guide blind hole of the second guide block and is slidably matched with the second guide block, the welding head of the welding gun faces the position of the flange and the pipeline, the guide blind hole of the second guide block is provided with an electromagnetic push rod, and the telescopic rod of the electromagnetic push rod is connected with the third guide block.

[0016] Compared with the prior art, the present application has the following outstanding beneficial effects: 1. The first outer sleeve in the pipeline clamping and positioning assembly is coaxially arranged with the second outer sleeve in the flange clamping and positioning assembly, when the pipeline clamping and positioning assembly is clamped and fixed in the pipe cavity of the pipeline and the flange clamping and positioning assembly is clamped and fixed in the pipe cavity of the flange, the flange and the pipeline can be coaxially arranged, and positioning is facilitated. 2. Before the welding gun of the present application is used to weld the joint between the flange and the pipeline, the telescopic rod is started to drive the rotating support frame to move away from the flange by a distance, so that friction between the rotating support frame and the flange during rotation is prevented, thereby avoiding interference with the rotating support frame. 3. The regular hexagonal blind hole of the rotating rod and the hexagonal prism structure of the rotating sleeve are matched 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, and the first clamping plate is expanded through the first driving link, at this time, due to the effect of the one-way bearing, the rotating sleeve cannot drive the second lead screw to rotate; when the rotating wrench is reversely rotated, the rotating wrench simultaneously drives the rotating sleeve and the rotating rod to rotate, the rotating rod drives the first lead screw to reversely rotate, and the first clamping plate is contracted; at this time, due to the effect of the one-way bearing, the rotating sleeve drives the second lead screw to reversely rotate; the second clamping plate is also contracted, so that the first clamping plate and the second clamping plate can be simultaneously contracted, and the present application can be conveniently removed from the flange and the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the present application; Figure 2 is a front view of the present application; Figure 3 is a top view of the present application; Figure 4 is Figure 3 is a partial enlarged view of part A in Figure 5 is a schematic diagram of the internal structure of the present application; Figure 6 is Figure 5 is a partial enlarged view of part B in Figure 7 is a schematic diagram of the structure of the flange clamping positioning assembly part in the present application; Figure 8 is a schematic diagram of the structure of the rotating wrench part in the present application; 1, pipe clamping positioning assembly; 11, first clamping plate; 12, first driving link; 13, first driven link; 14, first lead screw; 15, first outer sleeve; 16, adjusting screw; 17, rotating rod; 171, guide pin shaft; 18, first lead screw nut; 2, flange clamping positioning assembly; 21, rotating assembly; 211, rotating sleeve; 212, inner ring gear; 213, driven gear; 214, transmission gear; 215, fixed sleeve; 216, handle rod; 22, second driving link; 23, second clamping plate; 24, second driven link; 25, second lead screw; 26, second lead screw nut; 27, rotating sleeve; 28, second outer sleeve; 29, first guide sleeve; 3, welding assembly; 31, vertical telescopic frame; 311, second connecting plate; 312, second guide block; 313, second screw; 314, second guide rod; 315, third guide block; 316, connecting frame; 32, horizontal telescopic frame; 321, first connecting plate; 322, first guide rod; 323, first screw; 324, first guide block; 33, motor fixing frame; 34, second guide sleeve; 35, connecting sleeve; 36, frameless torque motor; 37, rotating support frame; 38, welding gun; 4, rotating wrench; 41, rotating handle; 42, wrench sleeve; 43, wrench head. DETAILED DESCRIPTION

[0018] The present application will be further described below in conjunction with the drawings and specific embodiments.

[0019] As Figures 1-3 shown, the present application includes a pipe clamping positioning assembly 1, a flange clamping positioning assembly 2 and a welding assembly 3.

[0020] The pipe clamping positioning assembly 1 is in sliding connection with the flange clamping positioning assembly 2, and the end of the flange clamping positioning assembly 2 is connected with the welding assembly 3.

[0021] The pipeline clamping positioning assembly 1 comprises a first sleeve 15, a first screw rod 14, a first screw nut 18, a rotating rod 17, a first driving link 12, a first driven link 13 and a first clamping plate 11.

[0022] Each long strip-shaped guide slot of the first sleeve 15 is hingedly connected with one end of the two first driven links 13 through a pin, and the other end of the two first driven links 13 is hingedly connected with the first clamping plate 11, and the two first driven links 13 are arranged in parallel, and the first clamping plate 11 is arranged in parallel with the axis of the first sleeve 15, so that the two first driven links 13, the first clamping plate 11 and the first sleeve 15 form a parallelogram mechanism, and the first clamping plate 11 can always keep parallel with the axis of the first sleeve 15 during movement.

[0023] As shown in the figure, Figure 5 The first sleeve 15 is provided with a cavity, one end wall of the cavity is provided with a through hole, and the other end wall is provided with a blind hole, and the outer wall of the first sleeve 15 is provided with a plurality of long strip-shaped guide slots arranged in a circle and uniformly arranged, the long strip-shaped guide slots are arranged along the axis of the first sleeve 15, and the long strip-shaped guide slots of the first sleeve 15 are communicated with the cavity.

[0024] As shown in the figure, Figure 7 The flange clamping positioning assembly 2 comprises a second sleeve 28, a second screw rod 25, a second screw nut 26, a second driving link 22, a second driven link 24 and a second clamping plate 23, the second sleeve 28 is provided with a cavity, and the two end walls of the cavity are respectively provided with through holes, the outer wall of the second sleeve 28 is provided with a plurality of long strip-shaped guide slots arranged in a circle and uniformly arranged, the long strip-shaped guide slots are arranged along the axis of the second sleeve 28, and the long strip-shaped guide slots of the second sleeve 28 are communicated with the cavity.

[0025] The second outer sleeve 28 is hinged to one end of the second driven link 24 through a pin shaft in each long strip-shaped guide slot, and the other end of the second driven link 24 is hinged to the second clamping plate 23, the two second driven links 24 are arranged in parallel, the second clamping plate 23 is arranged in parallel with the axis of the second outer sleeve 28, so that the second clamping plate 23 can keep parallel with the axis of the first outer sleeve 15 during movement.

[0026] The cavity of the second outer sleeve 28 is provided with the second lead screw 25 and the second lead screw nut 26, the two ends of the second lead screw 25 are rotatably connected to the through hole of the cavity, the second lead screw 25 is matched with the second lead screw nut 26, a plurality of 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 long strip-shaped guide slot of the second outer sleeve 28, one end of the second driving link 22 is hinged to the second guide plate, the other end of the second driving link 22 is hinged to the second clamping plate 23, and the second lead screw 25 is provided with a through hole distributed along the axis. When the second lead screw 25 rotates, the second lead screw nut 26 moves along the second lead screw 25, the second clamping plate 23 is driven to move by the second driving link 22, so that the second clamping plate 23 expands or shrinks.

[0027] One end of the second outer sleeve 28 is provided with the first guide sleeve 29, the first guide sleeve 29 is coaxially and fixedly connected with the second outer sleeve 28, the end of the first outer sleeve 15 provided with the through hole is inserted into the first guide sleeve 29, the first outer sleeve 15 is slidably connected with the first guide sleeve 29, and the first outer sleeve 15 is arranged in the same axis with the second outer sleeve 28.

[0028] One end of the second lead screw 25 is connected with the rotating assembly 21, and the rotating assembly 21 can drive the second lead screw 25 to rotate. In the embodiment, the rotating assembly 21 comprises an inner ring gear 212, a transmission gear 214 and a driven gear 213, the rotating sleeve 211 is sleeved outside the first guide sleeve 29, the rotating sleeve 211 is rotatably connected with the first guide sleeve 29, the inner wall of the rotating sleeve 211 is fixedly connected with the inner ring gear 212, the second lead screw 25 is fixedly connected with the gear hole of the driven gear 213, the end wall of the second outer sleeve 28 is rotatably connected with the gear hole of the transmission gear 214 through a rotating shaft, the driven gear 213 is externally meshed with the transmission gear 214, the first guide sleeve 29 is provided with an arc-shaped through hole, and a part of the transmission gear 214 passes through the arc-shaped through hole of the first guide sleeve 29 and is internally meshed with the inner ring gear 212.

[0029] The other end of the second lead screw 25 is connected with the rotating sleeve 27 through a one-way bearing, the end of the rotating sleeve 27 is in a hexagonal prism structure, the rotating sleeve 27 is provided with a through hole distributed along the axis, and the rotating sleeve 27 is rotatably connected with the through hole of the second outer sleeve 28.

[0030] The outer wall of the rotating sleeve 211 is provided with two symmetrical fixed sleeves 215, the fixed sleeve 215 is provided with a threaded hole, one end of the handle rod 216 is provided with an external thread, the threaded end of the handle rod 216 is matched with the threaded hole of the fixed sleeve 215, and the rotating sleeve 211 can be conveniently rotated through the handle rod 216. By rotating the rotating sleeve 211, the rotating sleeve 211 drives the inner gear ring 212 to rotate, the inner gear ring 212 drives the transmission gear 214 to rotate, the transmission gear 214 drives the driven gear 213 to rotate, and the driven gear 213 drives the second lead screw 25 to rotate.

[0031] The other end of the second outer sleeve 28 is connected with the welding assembly 3, the welding assembly 3 comprises a motor fixing frame 33, a rotating support frame 37, a horizontal telescopic frame 32, a vertical telescopic frame 31 and a welding gun 38, the center position of the rotating support frame 37 is provided with a through hole, one end of the rotating support frame 37 is fixedly installed with a second guide sleeve 34 and a connecting sleeve 35 respectively, the connecting sleeve 35 is located inside the second guide sleeve 34, the second guide sleeve 34, the connecting sleeve 35 and the center through hole of the rotating support frame 37 are coaxially arranged, and the second guide sleeve 34 is sleeved on one end of the second outer sleeve 28.

[0032] A plurality of circumferentially and uniformly distributed mounting blind holes are arranged on the other end wall of the second outer sleeve 28, and telescopic rods are fixedly installed in the mounting blind holes, the inner rods of the telescopic rods are fixedly connected with the motor fixing frame 33, the motor fixing frame 33 is fixedly connected with the outer ring of the frameless torque motor 36, and the inner ring of the frameless torque motor 36 is fixedly connected with the connecting sleeve 35. When the frameless torque motor 36 rotates, the connecting sleeve 35 can drive the rotating support frame 37 to rotate.

[0033] The rotating support frame 37 is fixedly installed with two symmetrical support plates, and the horizontal telescopic frame 32 is installed on each support plate, one end of the horizontal telescopic frame 32 is connected with the vertical telescopic frame 31, and the vertical telescopic frame 31 is connected with the welding gun 38.

[0034] The horizontal telescopic frame 32 comprises a first screw rod 323, a first guide rod 322, a first connecting plate 321 and a first guide block 324, one end of the first screw rod 323 is rotationally connected with the first connecting plate 321, the first guide block 324 is provided with a through hole, the other end of the first screw rod 323 passes through the through hole of the first guide block 324 and is connected with a rotating handle, the first screw rod 323 is rotationally connected with the through hole of the first guide block 324, the two sides of the first screw rod 323 are respectively provided with the first guide rod 322, one end of the first guide rod 322 is connected with the first connecting plate 321, and the other end is connected with the first guide block 324.

[0035] The end of the support plate is provided with a threaded through hole and a guide through hole, the first screw rod 323 is threadedly connected with the threaded through hole of the support plate, and the first guide rod 322 passes through the guide through hole of the support plate and is in sliding connection with the guide through hole.

[0036] The vertical telescopic frame 31 comprises a second screw rod 313, a second guide rod 314, a second connecting plate 311 and a second guide block 312, one end of the second screw rod 313 is rotationally connected with the second guide block 312, the second connecting plate 311 is provided with a through hole, the other end of the second screw rod 313 passes through the through hole of the second connecting plate 311 and is connected with a rotating handle, the second screw rod 313 is rotationally connected with the through hole of the second connecting plate 311, and the second guide rod 314 is installed on one side of the second screw rod 313.

[0037] The first guide block 324 is provided with a threaded through hole and a guide through hole, the second screw rod 313 is threadedly connected with the threaded through hole of the first guide block 324, and the second guide rod 314 passes through the guide through hole of the first guide block 324 and is in sliding connection with the guide through hole.

[0038] As shown in Figure 4 The second guide block 312 is provided with a guide blind hole, the connecting frame 316 is provided with a third guide block 315 and a welding gun 38, the third guide block 315 is inserted into the guide blind hole of the second guide block 312 and is in sliding connection with the guide blind hole, the welding head of the welding gun 38 faces the position of the flange and the pipeline, the guide blind hole of the second guide block 312 is provided with an electromagnetic push rod, and the telescopic rod of the electromagnetic push rod is fixedly connected with the third guide block 315. When the electromagnetic push rod is started, the electromagnetic push rod can drive the welding gun 38 to reciprocate along the axial direction of the pipeline and the flange.

[0039] As shown in Figure 6As shown, one end of the rotating rod 17 is provided with 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 screw 14. A plurality of blind holes uniformly distributed in a circular shape are provided on the outer wall of the other end of the rotating rod 17. 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 screw 25 and the rotating rod 17. The movable sleeve 27 is inserted into the through hole of the movable sleeve 27 and is rotatably connected thereto. 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 via a compression spring. The inner wall of the guide blind hole of the first lead screw 14 is provided with a plurality of evenly distributed guide grooves in a circumferential shape. The ends of the guide grooves away from the opening of the guide blind hole of the first lead screw 14 are provided with inclined surfaces. The inclined surfaces transitionally connect the bottom walls of the guide grooves with the inner walls of the guide blind hole. The guide grooves correspond to guide pins 171, which are placed in the guide grooves of the first lead screw 14. When the rotating rod 17 is pressed, the guide pins 171 slide from the inclined surfaces of the guide grooves 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 cause the adjusting screw 16 to mate with the threaded blind hole of the first lead screw 14.

[0040] like Figure 8 As shown, 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. The rotating wrench 4 includes a wrench socket 42, a wrench head 43 and a rotating handle 41. One end of the wrench socket 42 is provided with a regular hexagonal blind hole. The wrench head 43 is vertically fixedly installed at the center position of the bottom of the regular hexagonal blind hole of the wrench socket 42. The wrench head 43 is hexagonal. The regular hexagonal blind hole of the wrench socket 42 corresponds to the hexagonal 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. When the wrench head 43 of the rotating spanner 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 rotating spanner 4 is rotated, the rotating spanner 4 simultaneously drives the rotating sleeve 27 and the rotating rod 17 to rotate, and the rotating rod 17 drives the first screw 14 to rotate, and the first screw 14 drives the first screw nut 18 to move along the first screw 14, driving 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 screw 25 to rotate; when the rotating spanner 4 is rotated in the opposite direction, the rotating spanner 4 simultaneously drives the rotating sleeve 27 and the rotating rod 17 to rotate, and the rotating rod 17 drives the first 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 screw 25 to rotate in the opposite direction, causing the second clamping plate 23 to also contract.

[0041] The operation process is as follows: when the present application is used, the rotating support frame 37 is placed on the ground, the pipe clamping and positioning assembly 1 and the flange clamping and positioning assembly 2 are upward, the flange is sleeved on the outside of the flange clamping and positioning assembly 2, and the flange end is placed on the rotating support frame 37. The rotating sleeve 211 is rotated, the inner ring gear 212 is rotated by the rotating sleeve 211, the transmission gear 214 is rotated by the inner ring gear 212, the driven gear 213 is rotated by the transmission gear 214, the second lead screw 25 is rotated by the driven gear 213, the second lead screw nut 26 moves along the second lead screw 25, the second clamping plate 23 is moved by the second driving link 22, the second clamping plate 23 is expanded, and the plurality of second clamping plates 23 are placed on the inner wall of the flange to fix the flange on the flange clamping and positioning assembly 2, at this time, the axis of the flange is coincided with the axis of the second sleeve 28. Then, the handle rod 216 is taken off from the rotating sleeve 211, the present application and the flange are lifted, the pipe clamping and positioning assembly 1 is inserted into the pipe cavity of the pipe, the flange is contacted with the pipe, the wrench head 43 of the rotating wrench 4 is inserted into the hexagonal blind hole of the rotating rod 17, the hexagonal end of the rotating sleeve 27 is inserted into the hexagonal blind hole of the wrench sleeve 42, the rotating wrench 4 is rotated, the rotating wrench 4 rotates the rotating sleeve 27 and the rotating rod 17, the rotating rod 17 rotates the first lead screw 14, the first lead screw nut 18 moves along the first lead screw 14 by the first lead screw 14, the first clamping plate 11 is expanded by the first driving link 12, and the first clamping plate 11 is clamped on the inner wall of the pipe cavity, so that the pipe clamping and positioning assembly 1 is fixedly connected with the pipe. If there is a gap between the flange and the pipe, the rotating wrench 4 is pressed, the flange is moved to the pipe end by the flange clamping and positioning assembly 2, and the flange is attached to the pipe. During the pressing process, the rotating rod 17 moves along the guide blind hole of the first lead screw 14, the guide pin shaft 171 slides from the inclined surface of the guide groove to the inner wall of the guide blind hole, and the adjusting screw 16 is in contact with the threaded blind hole of the first lead screw 14. At this time, the guide pin shaft 171 is separated from the guide groove, the rotating rod 17 is rotated, the first lead screw 14 is no longer rotated, the adjusting screw 16 is matched with the threaded blind hole of the first lead screw 14, so that the flange clamping and positioning assembly 2 moves along the first sleeve 15 of the pipe clamping and positioning assembly 1, and the flange is tightly attached to the pipe by rotating the adjusting screw 16 and the threaded blind hole of the first lead screw 14. The telescopic rod drives the rotating support frame 37 to move away from the flange by a distance, the horizontal telescopic frame 32 and the vertical telescopic frame 31 are adjusted, the welding gun 38 is moved to the position of the joint between the flange and the pipe, the frameless torque motor 36 is started, the frameless torque motor 36 drives the rotating support frame 37 to rotate, and the rotating support frame 37 drives the welding gun 38 to weld the joint.

[0042] It should be noted that specific embodiments of the application have been described herein for purposes of illustration, but various modifications can be made without deviating from the spirit and scope of the application.

Claims

1. A rapid welding mechanism for alloy forgings, characterized by: The invention comprises a pipe clamping and positioning assembly (1), a flange clamping and positioning assembly (2) and a welding assembly (3), wherein 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) comprises a first outer sleeve (15), a first driven connecting rod (13) and a first clamping plate (11), a plurality of long strip guide grooves are provided on the outer wall of the first outer sleeve (15), and the long strip guide grooves are arranged along the axis of the first outer sleeve (15), and each long strip guide groove of the first outer sleeve (15) is hinged to one end of two first driven connecting rods (13), and the other ends of the two first driven connecting rods (13) are hinged to the first clamping plate (11), and the two first driven connecting rods (13) are arranged in parallel, and the first clamping plate (11) The flange clamping and positioning assembly (2) comprises a second outer sleeve (28), a second driven connecting rod (24) and a second clamping plate (23), and a plurality of long guide grooves are provided on the outer wall of the second outer sleeve (28), and the long guide grooves are arranged along the axis of the second outer sleeve (28); each long guide groove of the second outer sleeve (28) is hinged to one end of two second driven connecting rods (24), and the other ends of the two second driven connecting rods (24) are hinged to the second clamping plate (23), and the two second driven connecting rods (24) are arranged in parallel, and the second clamping plate (23) is arranged in parallel with the axis of the second outer sleeve (28); the first outer sleeve (15) and the second outer sleeve (28) are coaxially slidably connected; the other end of the second outer sleeve (28) is connected to the welding assembly (3).

2. The rapid welding mechanism for alloy forgings according to claim 1, characterized in that: The first outer sleeve (15) is provided with a cavity, and the long strip guide groove of the first outer sleeve (15) is connected to its cavity; a first screw (14) is installed in the cavity of the first outer sleeve (15), one end of the first screw (14) is rotatably connected to the cavity, the first screw (14) is matched with the first screw nut (18), the first 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).

3. The rapid welding mechanism for alloy forgings according to claim 2, characterized in that: 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. The rotating rod (17) is fixedly connected to the adjusting screw (16) coaxially, and the adjusting screw (16) corresponds to the threaded blind hole of the first lead screw (14). A blind hole is provided on the outer wall of the other end of the rotating rod (17). One end of the guide pin shaft (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 guide blind hole of the first lead screw (14). The rotating rod (17) is connected to the hole end wall of the guide blind hole of the first lead screw (14) through a compression spring. A guide groove is provided on the inner wall of the guide blind hole of the first lead screw (14), and a transition inclined surface is provided at the end of the guide groove. The guide groove corresponds to the guide pin shaft (171), and the guide pin shaft (171) is placed in the guide groove of the first lead screw (14).

4. The rapid welding mechanism for alloy forgings according to claim 1, characterized in that: The second outer sleeve (28) is provided with a cavity, and the long strip guide groove of the second outer sleeve (28) is connected to its 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 respectively connected to the cavity for rotation. The second lead screw (25) cooperates with the second lead screw nut (26). 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 hinged to the second splint (23). The second lead screw (25) is provided with through holes distributed along the axis.

5. The rapid welding mechanism for alloy forgings according to claim 1, characterized in that: A first guide sleeve (29) is installed at one end of the second outer sleeve (28), the first guide sleeve (29) and the second outer sleeve (28) are fixedly connected coaxially, 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, and the first outer sleeve (15) and the second outer sleeve (28) are coaxially arranged.

6. The rapid welding mechanism for alloy forgings according to claim 4, characterized in that: One end of the second lead screw (25) is connected to the rotating assembly (21), and the rotating assembly (21) includes an inner ring gear (212), a transmission gear (214) and a driven gear (213). The first guide sleeve (29) is covered with a rotating sleeve (211) on the outside. 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 inner ring gear (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) is externally meshed with the transmission gear (214). The first guide sleeve (29) is provided with an arcuate through hole. A portion of the transmission gear (214) passes through the arcuate through hole of the first guide sleeve (29) and is internally meshed with the inner ring gear (212).

7. The rapid welding mechanism for alloy forgings according to claim 4, characterized in that: The other end of the second lead screw (25) is connected to the rotating sleeve (27) through a one-way bearing. The end of the rotating sleeve (27) is a hexagonal prism structure. The rotating sleeve (27) is provided with through holes distributed along the axis. The rotating sleeve (27) is rotatably connected to the through holes of the second outer sleeve (28).

8. The rapid welding mechanism for alloy forgings according to claim 1, characterized in that: 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 gun (38). A through hole is provided at the center of the rotating support frame (37). 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 coaxially arranged. The second guide sleeve (34) is sleeved on the second outer sleeve (28); the second outer sleeve The other end wall of the cylinder (28) is provided with a plurality of mounting blind holes evenly distributed in a circumferential shape, and a telescopic rod is fixedly installed in the mounting blind hole, the inner rod of the telescopic rod is fixedly connected to the motor fixing frame (33), the motor fixing frame (33) is fixedly connected to the outer ring of the frameless torque motor (36), and 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), and a horizontal telescopic frame (32) is respectively installed on each support plate, one end of the horizontal telescopic frame (32) is vertically connected to the vertical telescopic frame (31), and the vertical telescopic frame (31) is connected to the welding gun (38).

9. The rapid welding mechanism for alloy forgings according to claim 8, characterized in that: The horizontal telescopic frame (32) includes a first screw rod (323), a first guide rod (322), a first connecting plate (321) and a first guide block (324). One end of the first screw rod (323) is rotatably connected to the first connecting plate (321). The first guide block (324) is provided with a through hole. The other end of the first screw rod (323) passes through the through hole on the first guide block (324) and is connected to the rotating handle. First guide rods (322) are respectively installed on both sides of the first screw rod (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 is provided with a threaded through hole and a guide through hole. The first screw rod (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 slides with it.

10. The rapid welding mechanism for alloy forgings according to claim 9, characterized in that: The vertical telescopic frame (31) includes a second screw rod (313), a second guide rod (314), a second connecting plate (311) and a second guide block (312). One end of the second screw rod (313) is rotatably connected to the second guide block (312). The second connecting plate (311) is provided with a through hole. The other end of the second screw rod (313) passes through the through hole on the second connecting plate (311) and is connected to the rotating handle. A second guide rod (314) is installed on one side of the second screw rod (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) is provided with a threaded through hole. The second guide block (312) is provided with a guide blind hole, and the connecting frame (316) is provided with a third guide block (315) and a welding gun (38). The third guide block (315) is inserted into the guide blind hole of the second guide block (312) and is slidably engaged with the guide blind hole. The welding head of the welding gun (38) faces the flange and the pipeline. 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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