Process pipe welding fixture and processing method thereof

Abstract

The present invention relates to the technical field of process pipe welding, and specifically to a process pipe welding fixture and a processing method thereof, comprising a fixture seat, a clamping unit for clamping and fixing a pipe with a flange installed on the left side of the upper end of the fixture seat, and also comprising a correction unit and an alignment unit. The present invention corrects the position of the inclined section of the pipe with a flange by setting two correction plates to prevent it from tilting in the front-to-back direction, and clamps the pipe with an arc-shaped groove by setting a pre-clamping mechanism, and calibrates the pipe with an arc-shaped groove by setting a calibration mechanism, thereby ensuring that the positions of the pipe with the flange and the pipe with the arc-shaped groove are accurate, thereby ensuring the welding processing quality of the process pipe. The present invention realizes automatic and precise alignment of the welding positions of the two pipes by setting a linkage positioning rod and an alignment groove, thereby increasing the welding efficiency of the process pipe and further improving the welding quality of the process pipe.

Description

Technical Field

[0001] The invention relates to the technical field of process pipe welding, in particular to a process pipe welding fixture and a processing method thereof. Background Art

[0002] Process pipes are pipes used to transport various fluids, transfer pressure or realize specific process functions in industrial production processes, such as Figure 9 A common process pipe structure shown is composed of two pipes welded together, one of which consists of a horizontal section and an inclined section, and the left side of the horizontal section has a flange, which is used to connect to other pipes, valves or equipment with flanges. The right side of the other pipe has an arc-shaped groove, which is used to precisely fit the outer side of the circular cylinder, and the center line of the arc-shaped groove is perpendicular to the center line of the horizontal section of the flanged pipe, ensuring the welding quality when the process pipe and the circular cylinder are welded.

[0003] When welding process pipes, two pipes are usually pre-clamped by a clamping device, and then the welding positions of the two pipes are manually aligned. Finally, the two pipes are welded together to complete the welding process of the process pipes.

[0004] However, the following problems exist when welding process pipes: 1. When aligning the welding positions of the two pipes, the inclined section of the pipe with the flange may deflect in the front-to-back direction, making it impossible to accurately align the welded end of the pipe with the flange and the welded end of the pipe with the arc groove, thereby affecting the welding quality of the process pipe; 2. During the welding process of the process pipe, it is difficult to effectively ensure that the center line of the arc groove and the center of the horizontal section of the pipe with the flange remain perpendicular, thereby affecting the subsequent welding quality of the process pipe itself and the welding operation between the process pipe and the circular cylinder. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a process pipe welding fixture, including a fixture seat, a clamping unit for clamping and fixing the pipe with a flange is installed on the left side of the upper end of the fixture seat, and also includes a correction unit and an alignment unit.

[0006] The correction unit includes a synchronization mechanism installed in the middle of the upper end of the clamp seat, and two vertical plates arranged symmetrically front and back are installed on the synchronization mechanism. The synchronization mechanism is used to synchronously adjust the height and front and back positions of the two vertical plates. Arc-shaped correction plates are distributed on the upper parts of the opposite sides of the two vertical plates. An adjustment mechanism for driving the correction plate to rotate at a fixed angle is connected between the correction plate and the vertical plate, and a positioning mechanism is arranged between the adjustment mechanism and the vertical plate.

[0007] The alignment unit includes a square plate installed on the right side of the upper end of the clamp seat through a sliding mechanism. Two clamping plates arranged symmetrically front and back are installed on the left side of the upper end of the square plate through a sliding synchronous screw. Arc grooves are provided on the upper ends of the opposite sides of the two clamping plates. A positioning mechanism for calibrating pipes with arc grooves is installed on the right side of the upper end of the square plate. Alignment plates for cooperating with the positioning mechanism to automatically align the welding positions of the two pipes are installed on both the front and rear sides of the upper end of the square plate.

[0008] Preferably, the clamping unit includes a fixed plate fixedly installed on the left side of the upper end of the clamp seat, and a plurality of clamping plates with an arc-shaped structure and evenly arranged circumferentially are provided on the upper side of the right end of the fixed plate. Synchronous parts are connected between the plurality of clamping plates and the fixed plate, and the opposite sides of the plurality of clamping plates are all installed with clamping blocks for sliding left and right through extension springs, and the left ends of the opposite sides of the plurality of clamping blocks are all set as inclined surfaces.

[0009] Preferably, the synchronization mechanism includes a synchronization plate distributed above the middle part of the clamp seat, the front end of the synchronization plate is threadedly connected to an adjusting screw 1, and the adjusting screw 1 is rotatably connected to the clamp seat, the rear end of the synchronization plate is connected to the clamp seat for up and down sliding through a plurality of guide rods, and the two vertical plates are both installed on the upper end of the synchronization plate for forward and backward sliding, and a synchronization screw 2 is commonly arranged between the two vertical plates and the synchronization plate.

[0010] Preferably, the adjustment mechanism includes an adjustment shaft fixedly mounted on the opposite sides of the two correcting plates, and the adjustment shaft is rotatably connected to its corresponding vertical plate. The end of the adjustment shaft away from the correcting plate rotates through the vertical plate and is arranged as an elastic telescopic structure. The end of the adjustment shaft away from the correcting plate is fixedly mounted with a rotating plate, and the end of the rotating plate close to the vertical plate is fixedly mounted with a plurality of circumferentially evenly arranged locking rods. The two vertical plates are provided with a plurality of circumferentially evenly arranged locking holes on the opposite sides, and the locking holes are used to cooperate with the locking rods to lock the position of the rotating plate.

[0011] Preferably, the positioning mechanism includes a connecting plate fixedly installed on the back sides of the two rotating plates and having a telescopic structure, an adjusting rod is installed on the end of the connecting plate away from the rotating plate by threaded fitting, a connecting block is rotatably installed on the right end of the adjusting rod, a linkage positioning rod is hinged on the right end of the connecting block, and the linkage positioning rod is slid left and right and installed on the vertical section of the L-shaped support plate, the vertical section of the support plate is set to a telescopic structure and the left end of the horizontal section of the support plate is fixedly connected to the synchronization plate.

[0012] Preferably, the sliding mechanism includes a sliding plate that is installed on the right side of the upper end of the clamp seat for sliding left and right. The sliding plate is threaded with an adjusting screw rod 2, and the adjusting screw rod 2 is rotatably connected to the clamp seat. The upper end of the sliding plate is connected to the square plate through a plurality of elastic support rods evenly arranged front and back. An alignment groove is provided at the left end of the alignment plate, and the left side of the alignment groove is set as a flared structure. The alignment groove is used to cooperate with the linkage positioning rod to realize automatic alignment of the two pipe welding positions.

[0013] Preferably, the positions corresponding to the arc grooves on the clamping plates are equipped with pre-clamping mechanisms, and the pre-clamping mechanisms include arc plates distributed on opposite sides of the arc grooves of the two clamping plates. The arc plates are connected to the corresponding clamping plates by sliding back and forth through multiple elastic clamping rods. Multiple circumferentially evenly arranged ball bearings are installed on opposite sides of the two arc plates, and the positions corresponding to the arc plates on the clamping plates are provided with clearance grooves.

[0014] Preferably, the calibration mechanism includes a mating plate slidably mounted on the right side of the upper end of the square plate, a transmission plate is fixedly mounted in the middle of the upper end of the mating plate, and the left end of the transmission plate is hinged with two abutment plates symmetrically arranged front and back, and the left ends of the two abutment plates are tilted away from each other and are fixed with two calibration ball parts symmetrically arranged up and down.

[0015] Preferably, two mating grooves arranged front to back are provided on the upper side of the mating plate, and the right ends of the two mating grooves are arranged inclined in the direction of approaching each other. An L-shaped rod is fixedly installed on the lower side of the right end of the clamping plate, and the lower end of the vertical section of the L-shaped rod is slidably installed in its corresponding mating groove.

[0016] Preferably, the present invention also provides a process pipe welding processing method, which is completed using the above-mentioned process pipe welding fixture, and the specific steps are as follows: S1. Clamping and correcting the pipe with the flange: Control the clamping unit to pre-clamp the pipe with the flange, and drive the correcting plate to rotate through the adjustment mechanism so that the inclination angle of the center line of the correcting plate is the same as the inclination angle of the inclined section of the pipe with the flange, and then drive the two correcting plates to clamp on the outside of the inclined section of the pipe with the flange through the synchronization mechanism to realize the position correction of the pipe with the flange, and clamp and fix the pipe with the flange again through the clamping unit.

[0017] S2. Clamping and alignment of pipes with arc-shaped grooves: The synchronous screw drives two clamping plates to clamp and fix the pipes with arc-shaped grooves. At the same time, the alignment mechanism aligns the pipes with arc-shaped grooves so that the center line of the arc-shaped grooves is arranged vertically.

[0018] S3. Alignment and welding processing: The sliding mechanism drives the pipe with the arc groove to move to the left through the square plate. At the same time, the alignment plate and the positioning mechanism cooperate to accurately align the welding positions of the two pipes. Finally, the two pipes are welded together manually.

[0019] S4. Workpiece unloading: Loosen the pipe with flange through the clamping unit, then rotate the synchronous screw to drive the two clamping plates to loosen the pipe with arc groove, and finally drive the two correcting plates to return to the initial position through the synchronous mechanism, and manually remove the process pipe after welding.

[0020] The beneficial effects of the present invention are: 1. The present invention corrects the position of the inclined section of the pipeline with the flange by arranging two correction plates to prevent it from tilting in the front-to-back direction, and clamps the pipeline with the arc-shaped groove by arranging a pre-clamping mechanism, and calibrates the pipeline with the arc-shaped groove by arranging a positioning mechanism, thereby ensuring the accurate position of the pipeline with the flange and the pipeline with the arc-shaped groove, thereby ensuring the welding processing quality of the process pipe.

[0021] 2. The present invention sets a clamping block to press the left side of the flange structure against the right side of the fixed plate, so that the center line of the horizontal section of the pipeline with the flange is arranged horizontally. The present invention also sets a positioning mechanism to calibrate the pipeline with the arc-shaped groove so that the center line of the arc-shaped groove is arranged vertically, thereby ensuring the quality of the process pipe after welding.

[0022] 3. The present invention adjusts the center line inclination angle of the correcting plate by providing an adjustment mechanism, so that the center line inclination angle of the correcting plate is the same as the inclination angle of the inclined section of the pipeline with a flange. When the correcting plate is tightly attached to the front and rear sides of the inclined section of the pipeline with a flange, the correcting plate fixes the inclined section of the pipeline with a flange, thereby increasing the stability when welding the two pipelines and further improving the welding quality of the process pipe.

[0023] 4. The present invention realizes automatic and precise alignment of the welding positions of the two pipes by arranging a linkage positioning rod and an alignment groove, thereby increasing the welding efficiency of the process pipes and further improving the welding quality of the process pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Figure 2 It is a partial structural diagram of the clamping unit of the present invention.

[0027] Figure 3 It is a partial structural diagram of the correction unit and the alignment unit of the present invention.

[0028] Figure 4 It is a partial structural diagram of the correction unit of the present invention.

[0029] Figure 5 It is a cross-sectional view of the adjustment shaft, the rotating plate and the locking lever of the present invention.

[0030] Figure 6 It is a partial structural diagram of the alignment unit of the present invention.

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the calibration mechanism of the present invention.

[0032] Figure 8 It is a state diagram of the matching process of the linkage positioning rod and the alignment groove of the present invention.

[0033] Figure 9 It is a schematic diagram of the process pipe after welding and welding to the side of the circular cylinder.

[0034] Figure 10 It is a schematic diagram of the present invention when two sections of the process pipe are clamped separately.

[0035] Figure 11 It is a schematic diagram of the alignment ball member of the present invention aligning a pipe with an arc-shaped groove.

[0036] Figure 12 It is a cross-sectional view of the support plate of the present invention.

[0037] Reference numerals: 1, clamp seat; 2, clamping unit; 21, fixing plate; 22, clamping plate; 23, synchronizer; 24, extension spring; 25, pressing block; 3, correction unit; 31, synchronization mechanism; 311, synchronization plate; 312, adjusting screw rod 1; 313, guide rod; 314, synchronization screw rod 2; 32, vertical plate; 33, correction plate; 34, adjustment mechanism; 341, adjustment shaft; 342, rotating plate; 343, locking rod; 35, positioning mechanism; 351, connecting plate; 352, adjustment rod; 353, linkage positioning rod; 35 4. Support plate; 4. Alignment unit; 41. Sliding mechanism; 411. Sliding plate; 412. Adjusting screw 2; 413. Elastic support rod; 42. Square plate; 43. Synchronous screw 1; 44. Clamping plate; 441. Giving groove; 442. L-shaped rod; 45. Positioning mechanism; 451. Matching plate; 452. Transmission plate; 453. Clamping plate; 454. Positioning ball; 455. Matching groove; 46. Alignment plate; 461. Alignment groove; 47. Pre-clamping mechanism; 471. Arc plate; 472. Elastic clamping rod; 473. Ball. DETAILED DESCRIPTION

[0038] The embodiments described below are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product instructions shall be followed.

[0039] See Figure 1 、 Figure 9 and Figure 10 A process pipe welding fixture includes a fixture base 1, a clamping unit 2 for clamping and fixing a pipe with a flange is installed on the left side of the upper end of the fixture base 1, a correction unit 3 is installed in the middle of the upper end of the fixture base 1, and a positioning unit 4 is installed on the right side of the upper end of the fixture base 1.

[0040] The present invention is used to clamp the process pipe during welding, and the present invention can correct the pipeline with flange to prevent it from deflecting in the front-to-back direction, thereby ensuring the welding quality of the process pipe. At the same time, the present invention can also calibrate the pipeline with arc grooves, thereby ensuring the quality of the process pipe after welding.

[0041] Specifically, first place the pipe with the flange in the clamping unit 2, pre-clamp the pipe with the flange by the clamping unit 2, then control the correction unit 3 to clamp the front and rear sides of the inclined section of the pipe with the flange to prevent it from deflecting in the front and rear directions, then control the clamping unit 2 to clamp and fix the pipe with the flange, and at this time the center line of the horizontal section of the pipe with the flange is arranged horizontally, then control the alignment unit 4 to clamp the pipe with the arc groove, and the alignment unit 4 can make the center line of the arc groove arranged vertically, finally control the alignment unit 4 again to accurately align the welding positions of the two pipes, and manually use the welding equipment to weld the two pipes together, when the welding of the process pipe is completed, control the clamping unit 2 to loosen the pipe with the flange, control the alignment unit 4 to loosen the pipe with the arc groove, and control the correction unit 3 no longer to clamp the front and rear sides of the inclined section of the pipe with the flange, so that the process pipe after welding can be taken out, and the welding processing of the process pipe is realized.

[0042] See Figure 1 and Figure 2 The clamping unit 2 includes a fixed plate 21 fixedly installed on the left side of the upper end of the clamp seat 1, and a plurality of clamping plates 22 with an arc-shaped structure and evenly arranged circumferentially are provided on the upper side of the right end of the fixed plate 21. A synchronization member 23 is connected between the plurality of clamping plates 22 and the fixed plate 21. The opposite sides of the plurality of clamping plates 22 are all installed with a tightening block 25 for sliding left and right through a top spring 24, and the left ends of the opposite sides of the plurality of tightening blocks 25 are all set to an inclined surface.

[0043] See Figure 2 It should be noted that the synchronous member 23 in the present invention includes a synchronous rod fixedly mounted on the left end of the clamping plate 22, and the left end of the synchronous rod slides through the fixed plate 21 and is hinged with an oblique rod. The left ends of multiple oblique rods are tilted in a direction close to each other and are jointly hinged with a synchronous circular plate. The synchronous rod is slidably connected to the fixed plate 21 along the radial direction of the synchronous circular plate. An adjusting screw three is threadedly connected to the synchronous circular plate, and the adjusting screw three is rotatably connected to the fixed plate 21. By screwing the adjusting screw three, the synchronous circular plate is driven to move left and right. During this period, the oblique rod rotates, and the synchronous circular plate causes the synchronous rod to move radially along the synchronous circular plate through the oblique rod, thereby causing multiple clamping plates 22 to move inward and outward synchronously.

[0044] The clamping unit 2 is used to clamp and fix the pipe with flange; specifically, first place the flange structure on the corresponding pipe on the opposite side of the multiple clamping plates 22, then control the synchronizer 23 to drive the multiple clamping plates 22 to move in the direction of approaching each other, and after the clamping block 25 moves with the clamping plate 22 so that its inclined surface contacts the side wall of the flange structure, the clamping plate 22 continues to move and is blocked by the flange structure. The clamping block 25 slides straight to the right and squeezes the extension spring 24. When the clamping plate 22 is pre-clamped on the outside of the flange structure, the clamping block 25 is pressed against the extension spring 24. Under the action of the rebound force of the spring 24, the left side of the flange structure is tightly attached to the right side of the fixed plate 21, so that the center line of the horizontal section of the pipeline with the flange is arranged horizontally. When the control correction unit 3 completes the correction of the inclined section of the pipeline with the flange, the synchronous component 23 is controlled to drive multiple clamping plates 22 to finally clamp and fix the flange structure. The inclined surface of the clamping block 25 cooperates with the fixed plate 21 to implement left and right limit of the flange structure. When the process pipe is welded, the synchronous component 23 is controlled to drive multiple clamping plates 22 to move away from each other, so that the clamping plates 22 loosen the flange structure.

[0045] See Figure 1 and Figure 3 The correcting unit 3 includes a synchronization mechanism 31 installed in the middle of the upper end of the clamp seat 1, and two vertical plates 32 arranged symmetrically front and back are installed on the synchronization mechanism 31. The synchronization mechanism 31 is used to synchronously adjust the height and front and back positions of the two vertical plates 32. Arc-shaped correcting plates 33 are distributed on the upper parts of the opposite sides of the two vertical plates 32. An adjustment mechanism 34 for driving the correcting plates 33 to rotate a certain angle is connected between the correcting plates 33 and the vertical plates 32, and a positioning mechanism 35 is installed between the adjustment mechanism 34 and the vertical plates 32.

[0046] See Figure 1 、 Figure 2 and Figure 10The correction unit 3 is used to prevent the flanged pipe from deflecting in the front-to-back direction; specifically, first, the adjustment mechanism 34 is controlled to drive the correction plate 33 to rotate a certain angle so that the inclination angle of the center line of the correction plate 33 is the same as the inclination angle of the inclined section of the flanged pipe. Then, the synchronization mechanism 31 is controlled to adjust the height of the two correction plates 33 through the vertical plate 32 so that the center line of the correction plate 33 and the center line of the inclined section of the flanged pipe are coplanar. Finally, the synchronization mechanism 31 is controlled to drive the two correction plates 33 toward each other through the vertical plate 32. Move so that the two correcting plates 33 are clamped on the front and rear sides of the inclined section of the flanged pipe, and the position of the flanged pipe is corrected. When the two pipes are welded, the correcting plates 33 can also support the inclined section of the flanged pipe, improve the docking stability of the two pipes, and further ensure the welding quality of the process pipe. When the welding of the process pipe is completed, the synchronization mechanism 31 is controlled to drive the two correcting plates 33 to move away from each other through the vertical plate 32, so that the correcting plates 33 are no longer clamped on the front and rear sides of the inclined section of the flanged pipe.

[0047] See Figure 1 、 Figure 4 、 Figure 5 and Figure 10 The adjustment mechanism 34 includes an adjustment shaft 341 fixedly mounted on the opposite sides of the two correcting plates 33, and the adjustment shaft 341 is rotatably connected to its corresponding vertical plate 32. The axis of the adjustment shaft 341 extends from front to rear, and the end of the adjustment shaft 341 away from the correcting plate 33 rotates through the vertical plate 32 and is set to an elastic telescopic structure. The end of the adjustment shaft 341 away from the correcting plate 33 is fixedly mounted with a rotating plate 342, and the end of the rotating plate 342 close to the vertical plate 32 is fixedly mounted with a plurality of circumferentially evenly arranged locking rods 343. A plurality of circumferentially evenly arranged locking holes are opened on the opposite sides of the two vertical plates 32, and the locking holes are used to cooperate with the locking rods 343 to lock the position of the rotating plate 342.

[0048] When the locking lever 343 is in the unlocked position, the locking lever 343 is unlocked and the locking lever 343 is unlocked, so that the locking lever 343 is unlocked and the locking lever 343 is unlocked.

[0049] See Figure 1 、 Figure 3 and Figure 4 The synchronization mechanism 31 includes a synchronization plate 311 distributed above the middle part of the clamp seat 1. The front end of the synchronization plate 311 is threadedly connected to an adjusting screw 312, and the adjusting screw 312 is rotatably connected to the clamp seat 1. The rear end of the synchronization plate 311 is connected to the clamp seat 1 for upward and downward sliding through a plurality of guide rods 313. The two vertical plates 32 are both installed on the upper end of the synchronization plate 311 for forward and backward sliding. A synchronization screw 2 314 is commonly provided between the two vertical plates 32 and the synchronization plate 311.

[0050] It should be noted that the synchronous screw 314 is provided with two threaded sections arranged front to back and with opposite rotation directions. The two vertical plates 32 are connected to the corresponding threaded sections on the synchronous screw 314 through threaded cooperation. The synchronous screw 314 is rotationally connected to the synchronous plate 311. By screwing the synchronous screw 314, the synchronous screw 314 drives the two vertical plates 32 to move synchronously inward and outward (synchronously move forward and backward).

[0051] The synchronization mechanism 31 is used to synchronously adjust the height and front and rear positions of the two correcting plates 33; specifically, by manually rotating the adjusting screw 1 312, under the action of the guide rod 313, the adjusting screw 1 312 drives the synchronization plate 311 to move vertically upward or downward, and the synchronization plate 311 finally drives the correcting plate 33 to move vertically upward or downward through the vertical plate 32, thereby realizing synchronous adjustment of the height of the two correcting plates 33, and then manually rotating the synchronization screw 2 314, so that the synchronization screw 2 314 drives the two vertical plates 32 to move synchronously inward and outward, thereby realizing synchronous adjustment of the front and rear positions of the two correcting plates 33, so that the center line of the correcting plate 33 and the center line of the inclined section of the pipeline with a flange are coplanar, and the correcting plate 33 can be clamped on the front and rear sides of the inclined section of the pipeline with a flange.

[0052] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 10 The alignment unit 4 includes a square plate 42 installed on the right side of the upper end of the clamp seat 1 through a sliding mechanism 41. Two clamping plates 44 arranged symmetrically in front and back are slidably installed on the left side of the upper end of the square plate 42 through a synchronous screw 43. The upper ends of the two clamping plates 44 on opposite sides are provided with arc grooves. A calibration mechanism 45 for calibrating the pipe with the arc groove is installed on the right side of the upper end of the square plate 42. Alignment plates 46 for cooperating with the positioning mechanism 35 to automatically and accurately align the welding positions of the two pipes are installed on both the front and rear sides of the upper end of the square plate 42. A pre-clamping mechanism 47 is installed at the position corresponding to the arc groove on the clamping plate 44.

[0053] It should be noted that the structure of the synchronous screw 1 43 in the present invention is the same as that of the synchronous screw 2 314, and the two clamping plates 44 are connected to the corresponding threaded segments on the synchronous screw 1 43 through threaded cooperation. The synchronous screw 1 43 is rotatably connected to the square plate 42. By manually rotating the synchronous screw 1 43, the synchronous screw 1 43 drives the two clamping plates 44 to move synchronously inward and outward (synchronously move forward and backward).

[0054] The alignment unit 4 is used to clamp and fix the pipe with the arc groove and automatically and accurately align the welding positions of the two pipes; specifically, first place the pipe with the arc groove between the arc grooves of the two clamping plates 44, then manually screw the synchronous screw 43 to drive the two clamping plates 44 to move towards each other, so that the clamping plates 44 drive the pre-clamping mechanism 47 to pre-clamp the pipe with the arc groove, then control the sliding mechanism 41 to drive the pipe with the arc groove to move to the left through the square plate 42, and at the same time, the alignment plate 46 can cooperate with the positioning mechanism 35 to automatically and accurately align the welding positions of the two pipes, so that the two pipes The welding positions of the two pipes are fitted together, and then the synchronous screw 43 is manually rotated to drive the arc grooves of the two clamping plates 44 to finally clamp and fix the pipe with the arc groove. At the same time, the calibration mechanism 45 can calibrate the pipe with the arc groove so that the center line of the arc groove is arranged vertically, thereby increasing the welding efficiency and welding quality of the process pipe. When the welding positions of the two pipes are fitted together, the two pipes are welded together by manual welding equipment to complete the welding of the process pipe. After that, the synchronous screw 43 is manually rotated to drive the two clamping plates 44 to move away from each other so that the welded process pipe can be taken out.

[0055] See Figure 6 and Figure 10 The pre-clamping mechanism 47 includes an arc plate 471 distributed on the opposite sides of the arc groove of the two clamping plates 44. The arc plate 471 is connected to the corresponding clamping plate 44 for forward and backward sliding through a plurality of elastic clamping rods 472. A plurality of circumferentially evenly arranged balls 473 are installed on the opposite sides of the two arc plates 471. A clearance groove 441 is opened at the position corresponding to the arc plate 471 on the clamping plate 44; wherein, the ball 473 cannot rotate left and right.

[0056] The pre-clamping mechanism 47 is used to pre-clamp the pipe with the arc groove; specifically, when the two clamping plates 44 move toward each other, the clamping plate 44 drives the two arc plates 471 to move toward each other through the elastic clamping rod 472, so that the two arc plates 471 can first pre-clamp the pipe with the arc groove, and under the action of the ball 473, the pipe with the arc groove can rotate back and forth. As the two clamping plates 44 continue to move toward each other, relative movement occurs between the clamping plate 44 and the arc plate 471, and the distance between the clamping plate 44 and the corresponding arc plate 471 decreases and stretches the elastic clamping rod 472. Finally, the arc plate 471 moves into the give way groove 441, and the arc groove of the clamping plate 44 finally clamps and fixes the pipe with the arc groove.

[0057] See Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 8 The cam 352 is fixed on the left side of the second support frame 354 so as to prevent the cam 352 from sliding out of the second support frame 354, thereby preventing the cam 352 from sliding out of the second support frame 354. During the synchronous movement of the two vertical plates 32 toward each other, the vertical plates 32 drive the rotating plate 342 to move synchronously and stretch the connecting plate 351 .

[0058] See Figure 1 and Figure 3 The sliding mechanism 41 includes a sliding plate 411 installed on the right side of the upper end of the clamp seat 1 for sliding left and right. The sliding plate 411 is threaded with an adjusting screw 2 412, and the adjusting screw 2 412 is rotatably connected to the clamp seat 1. The upper end of the sliding plate 411 is connected to the square plate 42 through a plurality of elastic support rods 413 evenly arranged front and back.

[0059] See Figure 3 and Figure 12It should be noted that the right side of the telescopic portion of the vertical section of support plate 354 is provided with a plurality of circular holes evenly spaced vertically. A pin is detachably mounted on the right side of the fixed portion of the vertical section of support plate 354. By inserting the pin into the corresponding circular hole, the total length of the vertical section of support plate 354 can be controlled. Support plate 354 provides rigid vertical support for linkage positioning rod 353, increasing its stability.

[0060] See Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 8 and Figure 10 The positioning mechanism 35 is used to cooperate with the alignment plate 46 to automatically and accurately align the welding positions of the two pipes, and the sliding mechanism 41 is used to adjust the position of the square plate 42. Specifically, when the rotating plate 342 is manually rotated, the rotating plate 342 drives the adjusting rod 352 to rotate through the connecting plate 351. Because the adjusting rod 352 is hinged to the linkage positioning rod 353 through the connecting block, and the linkage positioning rod 353 is not rotated by the supporting plate 354, the adjusting rod 352 will rotate relative to the linkage positioning rod 353. 52 and the linkage positioning rod 353, and at the same time, the linkage positioning rod 353 moves horizontally relative to the support plate 354 and the vertical section of the support plate 354 adaptively shrinks, so that the center line of the adjusting rod 352 and the center line of the inclined section of the pipe with the flange are finally made coplanar. Then the rotating plate 342 is loosened, and the rotating plate 342 drives the locking rod 343 in and out of the corresponding locking hole under the action of the elastic telescopic structure of the adjusting shaft 341, so as to realize the position locking of the rotating plate 342, and the adjusting rod 352 maintains the current tilt state. Then manually screw the adjusting rod 352. Since the connecting block is connected to the rotating adjusting rod 352, the linkage positioning rod 353 will not interfere with the rotation of the adjusting rod 352. The adjusting rod 352 rotates relative to the connecting plate 351 and moves to the right along its own center line. At the same time, the adjusting rod 352 also drives the linkage positioning rod 353 to move synchronously, and the vertical section of the supporting plate 354 performs adaptive follow-up contraction, and finally the right end of the adjusting rod 352 is coplanar with the welded end of the inclined section of the pipe with the flange (such as Figure 10 As shown), at this time, the linkage positioning rod 353 corresponds to the alignment groove 461, preparing for the subsequent automatic and precise alignment of the two pipe welding positions by the linkage positioning rod 353 and the alignment groove 461, and then the position of the telescopic part of the vertical section of the support plate 354 is locked by inserting the pin into the corresponding circular hole, and then the position of the linkage positioning rod 353 is locked; in the above process, the linkage positioning rod 353 is always in a horizontal state under the limit of the support plate 354.

[0061] After the arc plate 471 pre-clamps the pipe with the arc groove, the adjusting screw 2 412 is manually screwed to drive the sliding plate 411 to move to the left, so that the sliding plate 411 drives the square plate 42 to move to the left through the elastic support rod 413, and then the square plate 42 drives the pipe with the arc groove to move to the left through the clamping plate 44. When the square plate 42 drives the alignment plate 46 to move to the corresponding position of the linkage positioning rod 353, the square plate 42 can move up and down due to the presence of the elastic support rod 413. Since the rotating plate 342 is locked, The hole and the locking rod 343 are cooperated to restrict the rotation, the adjustment rod 352 cannot rotate, and the position of the telescopic part of the vertical section of the support plate 354 is locked, and then the linkage positioning rod 353 will not produce vertical and horizontal displacement. Therefore, the linkage positioning rod 353 can stably cooperate with the inclined surface of the flared structure of the alignment groove 461 in the current position state to move the alignment plate 46 upward or downward (if the linkage positioning rod 353 cooperates with the inclined surface on the upper side of the flared structure, the alignment plate 46 moves upward and stretches the elastic support rod 413, such as Figure 8 As shown), the alignment plate 46 drives the square plate 42 to move upward or downward synchronously and causes the elastic support rod 413 to adaptively expand and contract, thereby causing the square plate 42 to drive the pipe with the arc groove to move upward or downward synchronously through the clamping plate 44. When the linkage positioning rod 353 is fully inserted into the alignment groove 461, the middle of the alignment groove 461 is aligned with the linkage positioning rod 353. At this time, the welding positions of the two pipes have been automatically and accurately aligned.

[0062] It should be noted that after the arc plate 471 pre-clamps the pipe with the arc groove, the elastic support rod 413 will be slightly compressed under the action of the gravity of the pipe with the arc groove, but the compression amount is within the allowable range, so that when the right end of the adjusting rod 352 and the welding end of the inclined section of the pipe with the flange are coplanar, the linkage positioning rod 353 can always correspond to the inclined surface of the flared structure of the alignment groove 461 and cooperate with each other to ensure that the welding positions of the two pipes can be automatically and accurately aligned.

[0063] See Figure 1 、 Figure 6 、 Figure 7 and Figure 11 The positioning mechanism 45 includes a matching plate 451 which is slidably installed on the right side of the upper end of the square plate 42, and a transmission plate 452 is fixedly installed in the middle of the upper end of the matching plate 451. The left end of the transmission plate 452 is hinged with two front-to-back symmetrically arranged clamping plates 453. The left ends of the two clamping plates 453 are inclined in the direction away from each other and are fixed with two positioning ball members 454 which are symmetrically arranged up and down; wherein, the positioning ball member 454 includes a ball sleeve, which is fixedly connected to the clamping plate 453, and a clamping ball is installed on the end of the ball sleeve away from the corresponding clamping plate 453.

[0064] See Figure 1 、 Figure 6 、 Figure 7 and Figure 11 Two mating grooves 455 arranged front to back are provided on the upper side of the mating plate 451. The right ends of the two mating grooves 455 are inclined in the direction of approaching each other. An L-shaped rod 442 is fixedly installed on the lower side of the right end of the clamping plate 44, and the lower end of the vertical section of the L-shaped rod 442 is slidably installed in its corresponding mating groove 455; wherein, the L-shaped rod 442 is installed with reinforcing ribs for increasing its structural strength.

[0065] The calibration mechanism 45 is used to calibrate the pipe with the arc groove; specifically, after the two arc plates 471 pre-clamp the pipe with the arc groove, the sliding mechanism 41 is controlled to finally drive the pipe with the arc groove to move to the left through the square plate 42, so that the two pipe welding positions are in contact, and in this process, the two pipes are automatically and accurately aligned, and then the synchronization screw 43 is manually screwed to control the two clamping plates 44 to move toward each other, and the clamping plates 44 drive the two L-shaped rods 442 to move toward each other, and at the same time, the vertical section of the L-shaped rod 442 and the inclined matching groove 455 cooperate to drive the matching plate 451 to move to the left, so that the matching plate 451 drives the transmission plate 452 to move to the left. At this time, the two arc plates 471 pre-clamp the pipe with the arc groove, and under the action of the ball 473, the ball 473 and the pipe with the arc groove are in contact. Rolling friction is generated between the two paths, so that the pipe with the arc groove has the freedom to rotate forward and backward. When the clamping plate 453 drives the calibration ball 454 to press against the right side of the arc groove of the pipe, as the transmission plate 452 continues to move to the left, the clamping plate 453 drives its corresponding calibration ball 454 to move along the right side of the arc groove of the pipe in the direction away from each other under the hinged action of the clamping plate 453 and the transmission plate 452. When the center line of the arc groove of the pipe is not in a vertically arranged state, the left side of the pipe with the arc groove is limited by the pipe with the flange and cannot move to the left. Therefore, the calibration ball 454 can make the pipe rotate slightly in the forward and backward direction during the process of moving away from each other, so that the center line of the arc groove of the pipe can be arranged vertically under the action of the two calibration ball 454, thereby realizing the calibration of the pipe with the arc groove and ensuring the quality of the process pipe after welding is completed.

[0066] In addition, the present invention also provides a process pipe welding processing method, which is completed using a process pipe welding fixture. The specific steps are as follows: S1. Clamping and correcting the pipeline with a flange: Place the flange structure on the opposite sides of multiple clamping plates 22, control the synchronous parts 23 to drive the multiple clamping plates 22 to move in a direction close to each other and pre-clamp them on the outside of the flange structure. At the same time, the inclined surface of the clamping block 25 can press the flange structure to the left, so that the left side of the flange structure is close to the right side of the fixed plate 21, thereby making the center line of the horizontal section of the pipeline with the flange horizontally arranged.

[0067] The control adjustment mechanism 34 drives the correcting plate 33 to rotate a certain angle, so that the inclination angle of the center line of the correcting plate 33 is the same as the inclination angle of the inclined section of the pipeline with the flange, and then the control synchronization mechanism 31 is used to adjust the height of the two correcting plates 33 through the vertical plate 32, so that the center line of the correcting plate 33 and the center line of the inclined section of the pipeline with the flange are coplanar. Finally, the control synchronization mechanism 31 is used to drive the two correcting plates 33 to move toward each other through the vertical plate 32, so that the two correcting plates 33 are clamped on the front and rear sides of the inclined section of the pipeline with the flange, thereby realizing the correction of the pipeline with the flange, thereby ensuring the welding quality of the process pipe, and then controlling the synchronizer 23 to drive multiple clamping plates 22 to clamp and fix the flange structure.

[0068] S2. Clamping and positioning of pipes with arc-shaped grooves: Place the pipes with arc-shaped grooves on opposite sides of the arc-shaped grooves of the two clamping plates 44, then manually screw the synchronous screw 43 to drive the two clamping plates 44 to move toward each other, so that the clamping plates 44 drive the pre-clamping mechanism 47 to pre-clamp the pipes with arc-shaped grooves first, control the sliding mechanism 41 to finally drive the pipes with arc-shaped grooves to move to the left through the square plate 42, so that the welding positions of the two pipes are in contact, continue to control the manual screw screw 43 to drive the two clamping plates 44 to move toward each other, the two clamping plates 44 drive the positioning mechanism 45 to position the pipes with arc-shaped grooves, so that the center lines of the arc-shaped grooves are arranged vertically, and finally the arc-shaped grooves of the two clamping plates 44 clamp and fix the pipes with arc-shaped grooves.

[0069] S3. Alignment and welding processing: When controlling the sliding mechanism 41 to finally drive the pipe with the arc groove to move to the left through the square plate 42 so that the welding positions of the two pipes are in contact, the alignment plate 46 can cooperate with the positioning mechanism 35 to automatically and accurately align the welding positions of the two pipes, thereby increasing the welding efficiency of the process pipe. Finally, the two pipes are welded together manually.

[0070] S4. Workpiece unloading: After the welding of the process pipe is completed, the synchronous member 23 is controlled to drive the multiple clamping plates 22 to move away from each other, so that the clamping plates 22 loosen the flange structure, and then the synchronous screw 43 is controlled to drive the two clamping plates 44 to loosen the pipe with the arc groove. Finally, the synchronous mechanism 31 is controlled to drive the two correcting plates 33 to return to the initial position, and the process pipe after welding is removed manually.

[0071] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A process pipe welding fixture, comprising a fixture seat, a clamping unit for clamping and fixing a pipe with a flange is installed on the left side of the upper end of the fixture seat, characterized in that: Also includes: The correction unit includes a synchronization mechanism installed in the middle of the upper end of the clamp seat, on which two vertical plates arranged symmetrically in front and behind are installed. The synchronization mechanism is used to synchronously adjust the height and front and back positions of the two vertical plates. The upper parts of the opposite sides of the two vertical plates are each provided with an arc-shaped correction plate. An adjustment mechanism is connected between the correction plate and the vertical plate to drive the correction plate to rotate at a fixed angle. A positioning mechanism is provided between the adjustment mechanism and the vertical plate. The alignment unit includes a square plate mounted on the right side of the upper end of the fixture seat through a sliding mechanism, two clamping plates arranged symmetrically front and back are slidably mounted on the left side of the upper end of the square plate through a synchronous screw, arc-shaped grooves are provided on the upper ends of the opposite sides of the two clamping plates, a calibration mechanism for calibrating the pipe with the arc groove on the right side is mounted on the right side of the upper end of the square plate, and alignment plates for cooperating with the positioning mechanism to automatically align the welding positions of the two pipes are mounted on both the front and rear sides of the upper end of the square plate; The positions of the clamping plates corresponding to the arc grooves are all equipped with pre-clamping mechanisms, which include arc plates distributed on opposite sides of the arc grooves of the two clamping plates. The arc plates are connected to the corresponding clamping plates by a plurality of elastic clamping rods and slide back and forth. A plurality of circumferentially evenly arranged balls are installed on the opposite sides of the two arc plates, and a clearance groove is opened on the positions of the clamping plates corresponding to the arc plates; The calibration mechanism includes a matching plate slidably mounted on the right side of the upper end of the square plate, a transmission plate fixedly mounted in the middle of the upper end of the matching plate, and two abutment plates symmetrically arranged front and back are hingedly connected to the left end of the transmission plate. The left ends of the two abutment plates are arranged in an inclined direction away from each other and are fixedly mounted with two calibration ball members symmetrically arranged up and down. The upper side of the mating plate is provided with two mating grooves arranged front to back, and the right ends of the two mating grooves are arranged tilted in the direction of approaching each other. An L-shaped rod is fixedly installed on the lower side of the right end of the clamping plate, and the lower end of the vertical section of the L-shaped rod is slidably installed in its corresponding mating groove.

2. A process pipe welding fixture according to claim 1, characterized in that: The clamping unit includes a fixed plate fixedly installed on the left side of the upper end of the clamp seat, and a plurality of clamping plates with an arc-shaped structure and evenly arranged circumferentially are provided on the upper side of the right end of the fixed plate. Synchronous parts are connected between the plurality of clamping plates and the fixed plate. The opposite sides of the plurality of clamping plates are all installed with clamping blocks that slide left and right through top springs, and the left ends of the opposite sides of the plurality of clamping blocks are all set to inclined surfaces.

3. The process pipe welding fixture according to claim 1, characterized in that: The synchronization mechanism includes a synchronization plate distributed above the middle part of the clamp seat, the front end of the synchronization plate is threadedly connected to an adjusting screw 1, and the adjusting screw 1 is rotatably connected to the clamp seat, the rear end of the synchronization plate is connected to the clamp seat for up and down sliding through multiple guide rods, and the two vertical plates are both installed on the upper end of the synchronization plate for forward and backward sliding, and a synchronization screw 2 is commonly arranged between the two vertical plates and the synchronization plate.

4. The process pipe welding fixture according to claim 1, characterized in that: The adjusting mechanism includes an adjusting shaft fixedly mounted on opposite sides of the two correcting plates, and the adjusting shaft is rotatably connected to its corresponding vertical plate. The end of the adjusting shaft away from the correcting plate rotates through the vertical plate and is arranged to be an elastic telescopic structure. The end of the adjusting shaft away from the correcting plate is fixedly mounted with a rotating plate, and the end of the rotating plate close to the vertical plate is fixedly mounted with a plurality of circumferentially evenly arranged locking rods. The two vertical plates are provided with a plurality of circumferentially evenly arranged locking holes on the opposite sides, and the locking holes are used to cooperate with the locking rods to lock the position of the rotating plate.

5. The process pipe welding fixture according to claim 3, characterized in that: The positioning mechanism includes a connecting plate fixedly installed on the back sides of the two rotating plates and having a telescopic structure. An adjusting rod is installed on the end of the connecting plate away from the rotating plate by threaded cooperation. A connecting block is rotatably installed on the right end of the adjusting rod. A linkage positioning rod is hinged on the right end of the connecting block. The linkage positioning rod is slid left and right and is installed on the vertical section of the L-shaped support plate. The vertical section of the support plate is set to a telescopic structure and the left end of the horizontal section of the support plate is fixedly connected to the synchronization plate.

6. The process pipe welding fixture according to claim 5, characterized in that: The sliding mechanism includes a sliding plate that is installed on the right side of the upper end of the clamp seat for sliding left and right. The sliding plate is threadedly connected to an adjusting screw rod 2, and the adjusting screw rod 2 is rotatably connected to the clamp seat. The upper end of the sliding plate is connected to the square plate through a plurality of elastic support rods evenly arranged front and back. An alignment groove is provided at the left end of the alignment plate, and the left side of the alignment groove is set as a flared structure. The alignment groove is used to cooperate with the linkage positioning rod to realize automatic alignment of the two pipe welding positions.

7. A process pipe welding method, which is completed by using a process pipe welding fixture as claimed in claim 1, characterized in that: The specific steps are as follows: S1. Clamping and Correcting Pipes with Flanges: Control the clamping unit to pre-clamp the flanged pipe. The adjustment mechanism drives the correcting plate to rotate so that the centerline inclination angle of the correcting plate is the same as the inclination angle of the flanged pipe section. The synchronization mechanism then drives the two correcting plates to clamp onto the outer side of the flanged pipe section to correct the position of the flanged pipe. The flanged pipe is then clamped and fixed again by the clamping unit. S2. Clamping and alignment of pipes with arc grooves: A synchronous screw drives two clamping plates to clamp and fix the pipes with arc grooves. At the same time, the alignment mechanism aligns the pipes with arc grooves so that the center line of the arc grooves is arranged vertically. S3. Alignment and welding: The sliding mechanism uses the square plate to move the pipe with the arc groove to the left. At the same time, the alignment plate and the positioning mechanism work together to accurately align the welding positions of the two pipes. Finally, the two pipes are welded together manually. S4. Workpiece unloading: Loosen the pipe with flange through the clamping unit, then rotate the synchronous screw to drive the two clamping plates to loosen the pipe with arc groove, and finally drive the two correcting plates to return to the initial position through the synchronous mechanism, and manually remove the process pipe after welding.

Images