A flange assembly pipe welding apparatus

Abstract

The application relates to the technical field of welding equipment, in particular to a flange combined pipe fitting welding equipment which comprises a welding workbench, a motor is installed on the welding workbench, a rotating shaft is installed on the motor, a welding piece bearing assembly is installed on the rotating shaft, a pipe fitting adjusting assembly is installed on the welding piece bearing assembly, the pipe fitting adjusting assembly can adjust and position the pipe fitting, a flange adjusting assembly is further installed on the welding piece bearing assembly, when welding the flange and the pipeline, the flange is placed on the flange limiting strip on the lower side of the second welding support, the pipe fitting is placed on the eccentric top sleeve, then the threaded operating rod is rotated to drive the eccentric top sleeve to rotate and move, the flange and the pipe fitting can be aligned, synchronous clamping and fixing of the flange and the pipe fitting can be realized, the flange and the pipe fitting do not need to be fixed respectively, the operation is very convenient and fast, the synchronous positioning of the flange and the pipe fitting can be realized, and the work of the staff is facilitated.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a welding equipment for flanged pipe fittings. Background Technology

[0002] Flange-connected pipes refer to pipe assemblies with flanges, which connect pipes to each other and to equipment. They are widely used in various fields. During production, flange-connected pipes require welding the flanges and pipes together to form a whole. Existing automatic and semi-automatic arc welding equipment requires fixing the flanges and pipes separately before adjusting their positions to align them and complete the welding. This positioning and alignment process is cumbersome and cannot simultaneously align and fix the flanges and pipes. Simplifying the positioning and alignment steps of flanges and pipes and improving their efficiency will ultimately improve the efficiency of flange and pipe welding. Summary of the Invention

[0003] The purpose of this invention is to provide a welding device for flanged pipe fittings to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A welding equipment for flanged pipe fittings includes a welding workbench, a motor mounted on the welding workbench, a rotating shaft mounted on the motor, and a welding component support assembly mounted on the rotating shaft.

[0006] The welded component bearing assembly is equipped with a pipe fitting adjustment assembly, which can adjust and position the pipe fitting.

[0007] The welded component bearing assembly is also equipped with a flange adjustment assembly, which can adjust and position the flange.

[0008] The pipe fitting adjustment assembly is connected to the flange adjustment assembly, which can drive the flange adjustment assembly to move;

[0009] The pipe fitting adjustment assembly and flange adjustment assembly can drive the pipe fitting and flange to adjust synchronously, so as to align them and clamp and fix them.

[0010] Preferably, the welded component support assembly includes a first welding platform and a second welding platform, wherein the first welding platform supports and positions the pipe fitting, and the second welding platform supports and positions the flange.

[0011] Preferably, a connecting bridge plate is fixedly provided at the upper end of the first welding platform, and the first welding platform and the second welding platform are connected by the connecting bridge plate.

[0012] Preferably, the pipe fitting adjustment assembly includes a threaded operating rod, a pipe fitting mating plate, and a pipe fitting top bar. The threaded operating rod is threadedly connected to the first welding bearing, and an eccentric top sleeve is provided on the threaded operating rod.

[0013] Preferably, the eccentric top sleeve can push the pipe fitting upward, and the threaded operating rod can drive the pipe fitting mating plate to move.

[0014] Preferably, the fitting mating plate is installed on the first welding bearing, and fitting top strips are symmetrically installed on the fitting mating plate.

[0015] Preferably, the top strip of the pipe fitting is connected to the first welding support, and the top strip of the pipe fitting can be moved when the pipe fitting mating plate moves.

[0016] Preferably, the top bar of the pipe fitting can push the pipe fitting and limit its movement from both sides.

[0017] Preferably, the flange adjustment assembly includes a drive sleeve and a flange limiting strip, the drive sleeve is mounted on the second welding support, and the drive sleeve is connected to the flange limiting strip.

[0018] Preferably, the drive sleeve is connected to the threaded operating rod, and the drive sleeve can be moved by the threaded operating rod.

[0019] Preferably, the flange limiting strip is driven by a drive sleeve, and the flange limiting strip can adjust the position of the flange to achieve the positioning and fixing of the flange.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a reasonable structural design and strong functionality, and has the following advantages:

[0021] 1. When welding flanges and pipes, place the flange on the flange limiting strip under the second welding platform, place the pipe fitting on the eccentric top sleeve, and then rotate the threaded operating rod to drive the eccentric top sleeve to rotate and move, thereby aligning the flange and pipe fitting. It can also achieve synchronous clamping and fixing of the flange and pipe fitting without the need for separate fixing operations, which is very convenient and quick. It can achieve rapid synchronous positioning of the two, making it convenient for workers to carry out their work.

[0022] 2. When the threaded operating rod is rotated, it will rotate the eccentric top sleeve, which will push the pipe fitting upward to the positioning height. At the same time, the threaded operating rod can also drive the pipe fitting mating plate to move, which in turn can push the pipe fitting towards the flange. When the pipe fitting mating plate moves, it will also drive the pipe fitting top bar to move, which in turn can push the pipe fitting. Finally, the pipe fitting is clamped and positioned by the combined action of the eccentric top sleeve, the pipe fitting top bar and the upper limit bar.

[0023] 3. In addition, when the threaded operating rod moves, it will also drive the drive sleeve plate to move. As the drive sleeve plate moves, it will drive the flange limiting strip to move in the opposite direction, which will drive the flange to move upward. Finally, under the action of the flange limiting strip, the flange is clamped and positioned. When the flange limiting strip moves, it will also drive the moving block to move, which will cause the clamping frame to move towards the flange and press it on the flange to fix the flange. Attached Figure Description

[0024] Figure 1 A first-person view diagram of the assembly of the welding workbench.

[0025] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0026] Figure 3 A first-person view diagram of the assembly of the welding workbench.

[0027] Figure 4 This is a schematic diagram of the welding workbench.

[0028] Figure 5 for Figure 4 Enlarged diagram of point B in the middle.

[0029] Figure 6 A first-view schematic diagram of the assembly of the threaded operating rod and the fitting plate.

[0030] Figure 7 This is a second-view schematic diagram of the assembly of the threaded operating rod and the fitting plate.

[0031] Figure 8 This is a schematic diagram showing the connection between the threaded operating rod and the drive sleeve.

[0032] Figure 9 This is a schematic diagram of the assembly of the drive sleeve and the flange limit strip.

[0033] Figure 10 An exploded view of the flange limit strip assembly.

[0034] In the diagram: 1. Welding workbench; 11. Support plate; 12. Motor; 13. Rotating shaft; 2. First welding support; 21. Connecting bridge plate; 22. Matching protrusion; 23. Guide mating hole; 24. Threaded channel; 25. Second welding support; 26. Connecting channel; 261. Channel built-in rod; 27. Displacement strip plate; 271. Drive channel; 28. Support column; 29. ​​Restriction plate; 3. Threaded operating rod; 31. Insertion turntable; 32. Support connecting plate; 33. Eccentric top sleeve; 34. Matching column; 4. Pipe fitting mating plate; 41. Upper limit strip; 42. Lateral protrusion plate ; 43. Moving channel; 44. Moving inner support rod; 45. Guide mating rod; 451. Limiting end block; 46. Insertion slot; 5. Pipe fitting top strip; 51. Insertion moving plate; 52. Moving mating hole; 53. Translation driving rod; 6. Drive sleeve plate; 61. Movable sleeve hole; 62. Return spring; 63. Connecting frame; 64. Pulling connecting rod; 65. Bending mating plate frame; 66. Upward-curving strip; 67. Bearing channel; 7. Flange limiting strip; 71. Movable groove; 72. Limiting movable hole; 73. Moving block; 74. Moving column; 75. Movable insert plate; 76. Pressing frame. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] This invention provides a technical solution:

[0037] like Figure 1 and Figure 3 As shown, a welding equipment for flanged pipe fittings includes a welding worktable 1, a motor 12 mounted on the welding worktable 1, a rotating shaft 13 mounted on the motor 12, and a welding component support assembly mounted on the rotating shaft 13. A pipe fitting adjustment assembly is mounted on the welding component support assembly, which can adjust and position the pipe fitting. A flange adjustment assembly is also mounted on the welding component support assembly, which can adjust and position the flange. The pipe fitting adjustment assembly is connected to the flange adjustment assembly and can drive the flange adjustment assembly to move. The pipe fitting adjustment assembly and the flange adjustment assembly can drive the pipe fitting and flange to adjust synchronously, achieving alignment and clamping fixation of both.

[0038] like Figure 3As shown, a support plate 11 is fixedly installed on the welding workbench 1, and a motor 12 is fixedly installed on the support plate 11. A rotating shaft 13 is installed on the first welding support 2, and the rotating shaft 13 can drive the first welding support 2 to rotate.

[0039] like Figure 4 and Figure 5 As shown, the welded component support assembly includes a first welding platform 2 and a second welding platform 25. The first welding platform 2 supports and positions the pipe fitting, and the second welding platform 25 supports and positions the flange. A connecting bridge plate 21 is fixedly installed at the upper end of the first welding platform 2, and the first welding platform 2 and the second welding platform 25 are connected through the connecting bridge plate 21.

[0040] A connecting protrusion 22 is fixedly installed on the first welding base 2. Guide mating holes 23 are symmetrically opened on both sides of the connecting protrusion 22 on the first welding base 2. A threaded channel 24 is opened on the lower side of the first welding base 2. A connecting channel 26 is opened on the circumference of the second welding base 25. A channel-integrated rod 261 is fixedly installed in the connecting channel 26. Displacement strips 27 are symmetrically fixedly installed on both sides of the connecting channel 26 on the second welding base 25. A driving channel 271 is opened on the displacement strip 27. The inner wall of the driving channel 271 is smooth and burr-free. A support column 28 is also fixedly installed at the center of the second welding base 25. A limiting plate 29 is fixedly installed on the end of the support column 28 away from the second welding base 25.

[0041] like Figure 3 and Figure 6 As shown, the pipe fitting adjustment assembly includes a threaded operating rod 3, a pipe fitting mating plate 4, and a pipe fitting top bar 5. The threaded operating rod 3 is threadedly connected to the first welding base 2. An eccentric top sleeve 33 is provided on the threaded operating rod 3. The threaded operating rod 3 is threadedly inserted into the threaded channel 24 on the first welding base 2. A support connecting plate 32 is fixedly provided on the threaded operating rod 3. The eccentric top sleeve 33 is fixedly connected to the threaded operating rod 3 through the support connecting plate 32.

[0042] like Figure 7 As shown, the eccentric top sleeve 33 can push the pipe fitting to move upward, and the threaded operating rod 3 can drive the pipe fitting mating plate 4 to move. The threaded operating rod 3 is also fixedly provided with a plug-in turntable 31, and the threaded operating rod 3 is connected to the pipe fitting mating plate 4 through the plug-in turntable 31.

[0043] like Figure 1 , Figure 6 and Figure 7As shown, the fitting plate 4 is installed on the first welding base 2, and fitting top strips 5 are symmetrically installed on the fitting plate 4. An upper limiting strip 41 is fixedly installed at the upper end of the fitting plate 4, and lateral protrusions 42 are symmetrically fixedly installed on both sides of the fitting plate 4. A moving channel 43 is opened on the fitting plate 4, which extends to the lateral protrusions 42. A moving inner support rod 44 is fixedly installed in the moving channel 43. A guide fitting rod 45 is fixedly installed on the lateral protrusions 42. The guide fitting rod 45 is inserted into the guide fitting hole 23 on the first welding base 2, and a limiting end block 451 is also fixedly installed on the guide fitting rod 45. An insertion slot 46 is also opened at the lower end of the fitting plate 4. An insertion turntable 31 is inserted into the insertion slot 46, and the end faces of the insertion turntable 31 at both ends are in contact with the inner wall of the insertion slot 46.

[0044] like Figure 1 and Figure 6 As shown, the top strip 5 of the pipe fitting is connected to the first welding support 2. When the fitting mating plate 4 moves, it can drive the top strip 5 of the pipe fitting to move. The top strip 5 of the pipe fitting can push the pipe fitting and limit it from both sides. A plug-in moving plate 51 is fixedly installed on the top strip 5 of the pipe fitting. The plug-in moving plate 51 is inserted into the moving channel 43, and a moving mating hole 52 is opened on the plug-in moving plate 51. A moving inner support rod 44 is inserted into the moving mating hole 52. A translation driving rod 53 is hinged to one end of the plug-in moving plate 51 away from the top strip 5 of the pipe fitting. The other end of the translation driving rod 53 is hinged to the connecting protrusion 22.

[0045] like Figure 1 , Figure 2 and Figure 9 As shown, the flange adjustment assembly includes a drive sleeve 6 and a flange limiting strip 7. The drive sleeve 6 is mounted on the second welding support 25 and is connected to the flange limiting strip 7. The drive sleeve 6 has a movable sleeve hole 61, into which a support column 28 is inserted. A return spring 62 is sleeved on the support column 28. The two ends of the return spring 62 are fixed to the drive sleeve 6 and the limiting plate 29, respectively. A connecting frame 63 is fixedly arranged around the circumference of the drive sleeve 6. A pulling rod 64 is hinged to the connecting frame 63. The flange limiting strip 7 is hinged to the other end of the pulling rod 64. A bending fitting plate frame 65 is fixedly arranged on the connecting frame 63 on the lower side of the drive sleeve 6. An upward-curving plate 66 is fixedly arranged at the other end of the bending fitting plate frame 65. A bearing channel 67 is opened at the upper end of the upward-curving plate 66.

[0046] like Figure 8As shown, the drive sleeve 6 is connected to the threaded operating rod 3. The drive sleeve 6 can be moved by the threaded operating rod 3. The end of the threaded operating rod 3 is fixedly provided with a mating support post 34. The mating support post 34 is inserted into the bearing channel 67 on the upper tilting plate 66, and the upper tilting plate 66 is in contact with the end of the threaded operating rod 3.

[0047] like Figure 2 , Figure 3 and Figure 10 As shown, the flange limiting strip 7 is driven by the drive sleeve 6. The flange limiting strip 7 can adjust the position of the flange to achieve positioning and fixation. The flange limiting strip 7 is inserted into the connecting channel 26. The flange limiting strip 7 has symmetrical movable grooves 71. The inner wall of the movable grooves 71 is smooth and burr-free. One end of the flange limiting strip 7 also has a limiting movable hole 72. The channel built-in rod 261 is inserted into the limiting movable hole 72. In addition, a movable carrier is installed on the flange limiting strip 7. The movable carrier block 73 is symmetrically fixed with movable carrier columns 74, which are inserted into the drive channel 271 on the displacement strip 27 and are in contact with the inner wall of the drive channel 271. The movable carrier column 74 is also symmetrically fixed with movable insert plates 75, which are inserted into movable grooves 71. A clamping frame 76 is fixedly installed on the end of the movable insert plate 75 away from the movable carrier block 73. The clamping frame 76 can clamp and fix the flange.

[0048] When welding between the flange and the pipe fitting, the pipe fitting is placed on the eccentric top sleeve 33 on the threaded operating rod 3, while the flange is placed on the flange limiting strip 7 on the lower side of the second welding base 25. The flange limiting strip 7 supports and limits the flange. Then, the threaded operating rod 3 can be rotated to move towards the second welding base 25 under the action of the thread. As the threaded operating rod 3 rotates, the end of the eccentric top sleeve 33 with the larger eccentricity rotates upward until it reaches the uppermost position. At this point, the limiting end block 451 on the guide fitting rod 45 contacts the end face of the first welding base 2, and the threaded operating rod 3 can no longer move forward. Thus, during the rotation of the eccentric top sleeve 33, it pushes the pipe fitting upward. When the threaded operating rod 3 moves, the insertion turntable 31 on the threaded operating rod 3 is inserted into the insertion slot 46 on the fitting mating plate 4. Therefore, the movement of the threaded operating rod 3 will also drive the fitting mating plate 4 to move away from the first welding base 2, which in turn will drive the fitting top bar 5 to move away from the first welding base 2. Thus, under the action of the translational driving rod 53, the two fitting top bars 5 will move towards each other. When the fitting comes into contact with one of the fitting top bars 5, it can be pushed by the fitting top bar 5 until both fitting top bars 5 are in contact with the fitting. In this way, the fitting can be clamped from both sides by the action of the two fitting top bars 5, that is, the fitting is in the eccentric top sleeve 33. While moving upwards under the action of the eccentric top sleeve 33, the fitting top strip 5 will also move horizontally under the action of the fitting top strip 5. Simultaneously, the fitting mating plate 4 will push the fitting towards the flange. As the fitting moves upwards, it eventually contacts the upper limiting strip 41 on the fitting mating plate 4. Thus, the combined action of the eccentric top sleeve 33, the fitting top strip 5, and the upper limiting strip 41 allows for precise positioning and clamping of the fitting. Furthermore, since the threaded operating rod 3 contacts the upward-curving strip 66 on the bent mating plate frame 65, its movement will push the upward-curving strip 66, thereby driving the drive sleeve 6 to move away from the second welding bearing 25. The movement of the flange limit strip 7 will compress the return spring 62. Simultaneously, as the drive sleeve 6 moves, the connecting rod 64 pulls the flange limiting strip 7 on the second welding platform 25 (which is not in contact with the flange) towards the flange. At the same time, the lower flange limiting strip 7 on the second welding platform 25 pushes the flange upwards. Eventually, all flange limiting strips 7 come into contact with the flange, thus clamping and adjusting its position to align it with the pipe fitting. Since the moving column 74 on the moving block 73 is inserted into the drive channel 271, the movement of the flange limiting strip 7 will cause the moving column 74 to move along the drive channel 271.Under the action of the drive channel 271, the moving block 73 moves relative to the flange limiting strip 7, thereby causing the clamping frame 76 on the moving block 73 to press against the end face of the flange, achieving complete flange fixation. At this time, the pipe fitting and flange are in contact and aligned, allowing for welding. During the welding process, the motor 12 can drive the first welding platform 2 and the second welding platform 25 to rotate, adjusting the welding position and facilitating welding of the flange and pipe fitting. The operation is simple, convenient, and quick, eliminating the need for separate fixing of the flange and pipe fitting. Simply rotating the threaded operating rod 3 achieves synchronous adjustment of the flange and pipe fitting positions, aligning them and clamping them in place. This ensures the stability of the flange and pipe fittings during the welding process. After welding, rotating the threaded operating rod 3 in the reverse direction will cause it to move in the opposite direction under the action of the thread. As the threaded operating rod 3 moves in the opposite direction, the drive sleeve 6 will move in the opposite direction under the action of the return spring 62, causing the flange limiting strip 7 to reset. This releases the flange limiting strip 7 from the flange, and the clamping frame 76 no longer clamps the flange. At the same time, due to the rotation of the eccentric top sleeve 33, the pipe fitting is no longer supported by the eccentric top sleeve 33 and moves downward with the flange. The pipe fitting top strip 5 moves in the opposite direction and no longer restricts the pipe fitting, ultimately releasing the pipe fitting as well. In this way, the welded flange assembly can be removed.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding equipment for flanged pipe fittings, comprising a welding workbench, wherein a motor is mounted on the welding workbench, and a rotating shaft is mounted on the motor, characterized in that: A welded component bearing assembly is mounted on the rotating shaft; The welded component bearing assembly includes a first welding base (2) and a second welding base (25). The first welding base (2) supports and positions the pipe fitting, and the second welding base (25) supports and positions the flange. A connecting protrusion (22) is fixedly provided on the first welding base (2). Guide mating holes (23) are symmetrically provided on the first welding base (2) on both sides of the connecting protrusion (22). A threaded channel (24) is provided on the lower side of the first welding base (2). A connecting channel (26) is provided on the circumference of the second welding base (25). Displacement strips (27) are symmetrically fixedly provided on the second welding base (25) on both sides of the connecting channel (26). A support column (28) is also fixedly provided at the center of the second welding base (25). The welding component bearing assembly is equipped with a pipe fitting adjustment assembly, which includes a threaded operating rod (3), a pipe fitting mating plate (4), and a pipe fitting top bar (5). The threaded operating rod (3) is threaded into the threaded channel (24) on the first welding base (2). An eccentric top sleeve (33) is provided on the threaded operating rod (3), and a support connecting plate (32) is also fixedly provided on the threaded operating rod (3). The eccentric top sleeve (33) is fixedly connected to the threaded operating rod (3) through the support connecting plate (32). A plug-in turntable (31) is fixedly installed on the threaded operating rod (3). A plug-in turntable (46) is opened at the lower end of the fitting plate (4). The plug-in turntable (31) is inserted into the plug-in turntable (46). The fitting plate (4) is installed on the first welding base (2). Fitting top strips (5) are symmetrically installed on the fitting plate (4). An upper limit strip (41) is fixedly installed at the upper end of the fitting plate (4). Lateral protrusions (42) are symmetrically fixed on both sides of the fitting plate (4). A moving channel (43) is opened on the fitting plate (4). The moving channel (43) extends to the lateral protrusions (42). A moving inner support rod (44) is fixedly installed in the moving channel (43). A guide fitting rod (45) is fixedly installed on the lateral protrusions (42). The guide fitting rod (45) is inserted into the guide fitting hole (23) on the first welding base (2). A plug-in movable plate (51) is fixedly installed on the top strip (5) of the pipe fitting. The plug-in movable plate (51) is inserted into the movable channel (43), and a movable mating hole (52) is opened on the plug-in movable plate (51). A movable inner support rod (44) is inserted into the movable mating hole (52). A translation driving rod (53) is hinged to one end of the plug-in movable plate (51) away from the top strip (5) of the pipe fitting. The other end of the translation driving rod (53) is hinged to the connecting protrusion (22). The welding component bearing assembly is also equipped with a flange adjustment assembly. The flange adjustment assembly includes a drive sleeve (6) and a flange limiting strip (7). The drive sleeve (6) is installed on the second welding platform (25). The drive sleeve (6) has a movable sleeve hole (61). A support column (28) is inserted into the movable sleeve hole (61). A return spring (62) is sleeved on the support column (28). A connecting frame (63) is fixedly installed on the circumference of the drive sleeve (6), a pulling rod (64) is hinged on the connecting frame (63), and a flange limiting strip (7) is hinged to the other end of the pulling rod (64). A bending fitting plate frame (65) is fixedly installed on the connecting frame (63) on the lower side of the drive sleeve (6), and an upward-curving strip (66) is fixedly installed at the other end of the bending fitting plate frame (65). A bearing channel (67) is opened at the upper end of the upward-curving strip (66). The end of the threaded operating rod (3) is fixedly provided with a mating support post (34), which is inserted into the bearing channel (67) on the upper rocker strip (66), and the upper rocker strip (66) is in contact with the end of the threaded operating rod (3). The pipe fitting adjustment assembly and the flange adjustment assembly drive the pipe fitting and flange to adjust synchronously, so as to align them and clamp and fix them.

2. The welding equipment for flanged pipe fittings according to claim 1, characterized in that: A channel built-in rod (261) is fixedly installed in the connecting channel (26), and a driving channel (271) is opened on the displacement strip (27); A limiting plate (29) is fixedly installed on one end of the supporting column (28) away from the second welding platform (25).

3. The welding equipment for flanged pipe fittings according to claim 2, characterized in that: A connecting bridge plate is fixedly provided at the upper end of the first welding platform, and the first welding platform and the second welding platform are connected by the connecting bridge plate.

4. The welding equipment for flanged pipe fittings according to claim 3, characterized in that: A limiting end block (451) is fixedly installed on the guide rod (45).

5. The welding equipment for flanged pipe fittings according to claim 4, characterized in that: The flange limiting strip (7) is driven by the drive sleeve (6), and the flange limiting strip (7) adjusts the position of the flange to achieve the positioning and fixing of the flange.

6. The welding equipment for flanged pipe fittings according to claim 5, characterized in that: The flange limiting strip (7) is inserted into the connecting channel (26). The flange limiting strip (7) has symmetrical movable grooves (71). The inner wall of the movable groove (71) is smooth and burr-free. One end of the flange limiting strip (7) also has a limiting movable hole (72). A channel built-in rod (261) is inserted into the limiting movable hole (72).

7. The welding equipment for flanged pipe fittings according to claim 6, characterized in that: A movable carrier block (73) is installed on the flange limiting strip (7), and movable carrier columns (74) are symmetrically fixed on the movable carrier block (73). The movable carrier columns (74) are inserted into the driving channel (271) on the displacement strip (27).

8. The welding equipment for flanged pipe fittings according to claim 7, characterized in that: The movable block (73) is also symmetrically fixed with movable insert plates (75), which are inserted into the movable groove (71). A clamping frame (76) is fixedly installed on one end of the movable insert plate (75) away from the movable block (73), and the clamping frame (76) clamps and fixes the flange.

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