Swing type weld bead removing device of single-head welded pipe internal polishing machine

Abstract

The invention discloses a swing type weld bead removing device for a single-head welded pipe inner polishing machine, and relates to the technical field of welded pipe machining, the weld bead removing device comprises a first support and a second support, a supporting frame is welded to the center of the first support and the center of the second support, and a threaded lead screw is arranged in the supporting frame; a movable pedestal is arranged above the threaded lead screw, and a driving motor is arranged on the movable pedestal; the top frame table is welded to the upper end of the second support, a first hydraulic cylinder is arranged at the top of the top frame table, a lower pressing plate is welded to a piston rod of the first hydraulic cylinder, and an erecting connecting rod is welded to the outer wall of one side of the top frame table; the problems that an existing steel pipe weld bead leveling device only can grind and level a weld bead outside a steel pipe and cannot grind and finish an internal weld bead of a welded pipe, and materials are inconvenient to change in the weld bead removing process of the steel pipe, so that the steel pipe is not completely ground and corrected, and the efficiency is low are solved.

Description

Technical Field

[0001] The invention relates to the technical field of welded pipe processing, in particular to a swing-type weld bead removal device for a single-head welded pipe internal polishing machine. Background Art

[0002] Welded steel pipe, also known as welded pipe, is a steel pipe made by welding steel plates or strips after curling and forming. During the welding process, weld beads will remain on the inner wall of the steel pipe. When processing single-head welded pipes, the inner wall of the steel pipe needs to be polished and removed with the help of an internal polishing machine.

[0003] For example, the announcement number is: CN214683598U (named as a steel pipe weld leveling device), which includes a bracket, an upper leveling roller and a lower leveling roller arranged on the bracket, a space for the steel pipe to pass through is formed between the upper leveling roller and the lower leveling roller, and also includes a conveying roller and a conveying drive device that drives the conveying roller to rotate. The conveying roller is arranged at the bottom of the space, and the lower leveling roller is horizontally slidably arranged on the bracket. The lower leveling roller is provided with an adjusting screw, and the adjusting screw is driven by the adjusting drive device. The conveying roller is provided to drive the steel pipe forward by friction, and at the same time, the lower leveling roller is driven by the adjusting drive device. An adjusting screw is arranged on the leveling roller, and the adjusting driving device drives the adjusting screw to rotate forward and reverse, thereby driving the lower leveling roller to reciprocate in the horizontal direction on the bracket, thereby realizing repeated rolling of the weld bead. The adjusting screw has high precision and can accurately position and roll the local weld bead. It also includes a mounting frame, and the lower leveling roller is rotatably arranged on the mounting frame. A horizontally arranged guide rod is arranged on the bracket, and the guide rod passes through the mounting frame and is slidably connected thereto. The mounting frame moves along the extension direction of the guide rod to facilitate the translation of the lower leveling roller. Preferably, two guide rods are arranged symmetrically on both sides of the mounting frame.

[0004] The above-mentioned steel pipe weld leveling device can only grind and level the weld on the outside of the steel pipe, but cannot grind and trim the internal weld of the welded pipe. In addition, it is inconvenient to change materials during the process of removing the weld, resulting in incomplete grinding and correction of the steel pipe and low efficiency. For this reason, we provide a single-head welded pipe internal polishing machine swinging weld removal device. Summary of the invention

[0005] The purpose of the present invention is to provide a swing-type weld bead removal device for a single-head welded pipe internal polishing machine, so as to solve the problem that the existing steel pipe weld bead leveling device proposed in the above background technology can only grind and level the weld bead on the outside of the steel pipe, but cannot grind and trim the internal weld bead of the welded pipe, and it is inconvenient to change materials during the weld bead removal process of the steel pipe, resulting in incomplete grinding and correction of the steel pipe and low efficiency.

[0006] To achieve the above object, the present invention provides the following technical solution: a swing-type weld bead removal device for a single-head welded pipe internal polishing machine, comprising a first bracket and a second bracket, a support frame is welded at the center of the first bracket and the second bracket, a threaded screw is arranged inside the support frame, a movable pedestal is arranged above the threaded screw, and a driving motor is arranged on the movable pedestal; Also includes: A top frame platform, which is welded and arranged at the upper end position of the second bracket, and a first hydraulic cylinder is arranged on the top of the top frame platform, a lower pressure plate is welded on the piston rod of the first hydraulic cylinder, a mounting connecting rod is welded on the outer wall of one side of the top frame platform, and a base plate is welded on one end of the mounting connecting rod; A connecting turntable is arranged on an outer wall of one side of the base plate, and an inner connecting shaft is integrally formed on the inner wall of the connecting turntable, a connecting circular groove is arranged at the connecting position of the inner connecting shaft and the base plate, the connecting circular groove and the base plate are an integral structure, a bearing seat is fixed inside the connecting circular groove by nail-free glue, and the inner connecting shaft is movably connected to the base plate through the bearing seat; A connecting rod, which is welded on the outer wall of the connecting turntable, two connecting rods are provided, the angle between the two connecting rods is 45 degrees, and one end of the two connecting rods is welded with a steel pipe bearing ring; A bearing hole seat is welded at one end of the support frame, and a lifting platform is provided at the upper end of the bearing hole seat, and four end blocks are welded at the upper end of the lifting platform, and a contact roller is provided between two adjacent end blocks, and both ends of the contact roller are movably connected to the end blocks through a rotating shaft; A stop frame plate is installed at the upper end position of the support frame, and a center through groove is provided at the inner center position of the stop frame plate. A bottom block is integrally formed at the lower end of the stop frame plate, and an inner groove is provided on the inner wall of the bottom block. An electromagnet is fixed inside the inner groove by nail-free glue, and the stop frame plate is adsorbed and connected to the support frame through the electromagnet.

[0007] Preferably, a linkage shaft is provided on one side of the movable pedestal, one end of the linkage shaft is transmission-connected to the output shaft of the driving motor through a coupling, and a grinding head is welded on the other end of the linkage shaft, and the linkage shaft and the grinding head are connected to the stop frame plate through a center through groove.

[0008] Preferably, a support platform is welded on the outer wall of the second bracket, a second hydraulic cylinder is arranged on the upper end of the support platform, and a piston rod of the second hydraulic cylinder passes through the bearing hole seat and is welded to the bottom of the lifting platform seat.

[0009] Preferably, an extension rod is welded on an outer wall of one side of the lifting platform, and a stop plate is welded on one end of the extension rod.

[0010] Preferably, two positioning through holes are provided inside the connecting turntable, and a positioning hole is provided outside the connecting circular groove. The positioning hole and the base plate are an integrated structure, and the aperture of the positioning hole is equal to the aperture of the positioning through hole.

[0011] Preferably, positioning pins are installed inside the positioning hole and one of the positioning through holes, and the connecting turntable is fixedly connected to the base plate via the positioning pins.

[0012] Preferably, a screw slider is welded to the bottom of the movable pedestal, and the movable pedestal is movably connected to the threaded screw in the support frame via the screw slider.

[0013] Preferably, a servo motor is provided at the other end of the support frame, and the output shaft of the servo motor is drivingly connected to the threaded screw inside the support frame through a coupling mechanism.

[0014] Preferably, a limiting shaft disc is welded on one end of the inner connecting shaft, and the size of the limiting shaft disc is larger than the caliber of the bearing seat.

[0015] Preferably, a power box is fixedly provided on the outer wall of the first bracket by screws, a power supply connection is provided between the power box and the stop frame plate, and the output end of the power box is electrically connected to the input end of the electromagnet through the power supply connection.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges two single-head welded pipes that need to be de-welded by sleeve connection on two steel pipe bearing rings respectively. The two steel pipe bearing rings are connected to a connecting turntable through two connecting rods. The connecting turntable is rotatably connected to a base plate through an inner connecting shaft, so that the two steel pipe bearing rings are in a swinging adjustment mechanism with the connecting turntable as the center. When de-welding is performed, one steel pipe bearing ring is first rotated to a vertical position, and then a positioning pin is installed to connect the corresponding adjustment perforation of the steel pipe bearing ring with the positioning hole, so as to position the position after the swing adjustment. After the de-welding is completed, the positioning pin is pulled out. The other steel pipe supporting ring is rotated to the vertical position. At this time, the single-head welded pipe that has been processed with weld bead removal is swung to the outside, and then the weld bead removal process is continued on the replaced single-head welded pipe while the finished product is unloaded. After the finished product is unloaded, the single-head welded pipe to be processed is replaced, and so on. This improves the efficiency of the internal polishing and weld bead removal process of the single-head welded pipe, and overcomes the problem that the existing steel pipe weld bead leveling device can only grind and level the weld bead on the outside of the steel pipe, but cannot grind and trim the internal weld bead of the welded pipe, and it is inconvenient to change the material of the steel pipe during the weld bead removal process, resulting in incomplete grinding and correction of the steel pipe and low efficiency.

[0017] 2. After the positioning is completed, push the single-head welded pipe so that the tail end of the single-head welded pipe is flush with the stop plate. Then, according to the length of the single-head welded pipe, install the stop frame plate on the support frame, so that the two ends of the single-head welded pipe are stably limited at the position between the stop frame plate and the stop plate, and press the power switch of the power box to connect the electromagnet to the power supply to generate magnetic force, and fix it with the support frame. After that, the first hydraulic cylinder drives the lower pressure plate to press down, and the second hydraulic cylinder drives the lifting platform to rise, so that the bottom of the single-head welded pipe is supported at the position between the two contact rollers, and the top of the single-head welded pipe is pressed down and positioned by the lower pressure plate, thereby realizing the all-round positioning of the single-head welded pipe up, down, left and right, and improving the stability of the single-head welded pipe during the weld removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the structure of the swing-type weld bead removal device of the single-head welded pipe internal polishing machine of the present invention; Figure 2 It is a structural side view of the swing-type weld bead removal device of the single-head welded pipe internal polishing machine of the present invention; Figure 3 It is a schematic diagram of the end face structure of the swing-type weld bead removal device of the single-head welded pipe internal polishing machine of the present invention; Figure 4 It is an enlarged schematic diagram of the structure of part A of the present invention; Figure 5 This is an enlarged schematic diagram of the structure of part B of the present invention: Figure 6 This is a schematic diagram of the stop frame structure of the present invention: Figure 7 This is a schematic diagram of the connection structure between the connecting turntable and the base plate of the present invention: Figure 8 This is a schematic diagram of the connection structure between the movable platform and the support frame of the present invention: In the figure: 1. first bracket; 2. second bracket; 3. support frame; 4. power box; 5. threaded screw; 6. movable pedestal; 7. drive motor; 8. linkage shaft; 9. grinding swivel; 10. stop frame plate; 11. power supply wiring; 12. top frame; 13. first hydraulic cylinder; 14. support platform; 15. second hydraulic cylinder; 16. steel pipe bearing ring; 17. connecting rod; 18. extension rod; 19. shift plate; 20. servo motor ; 21. Lower pressure plate; 22. Erection connecting rod; 23. Base plate; 24. Connecting turntable; 25. Bearing hole seat; 26. Adjustment through hole; 27. Positioning pin; 28. Lifting platform seat; 29. ​​End block; 30. Contact roller; 31. Center through groove; 32. Bottom end block; 33. Inner groove; 34. Electromagnet; 35. Connecting circular groove; 36. Bearing seat; 37. Inner connecting shaft; 38. Limiting shaft plate; 39. Positioning hole; 40. Screw slider. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] See also Figure 1-8 The present invention provides an embodiment: a swing-type weld removal device for a single-head welded pipe internal polishing machine, comprising a first bracket 1 and a second bracket 2, a support frame 3 is welded at the center of the first bracket 1 and the second bracket 2, a threaded screw 5 is arranged inside the support frame 3, a movable pedestal 6 is arranged above the threaded screw 5, and a driving motor 7 is arranged on the movable pedestal 6; Also includes: A top frame 12 is welded and arranged at the upper end position of the second bracket 2, and a first hydraulic cylinder 13 is arranged on the top of the top frame 12, a lower pressure plate 21 is welded on the piston rod of the first hydraulic cylinder 13, a mounting connecting rod 22 is welded on the outer wall of one side of the top frame 12, and a base plate 23 is welded on one end of the mounting connecting rod 22; The connecting turntable 24 is arranged on one side outer wall of the base plate 23, and an inner connecting shaft 37 is integrally formed on the inner wall of the connecting turntable 24, and a connecting circular groove 35 is arranged at the connecting position of the inner connecting shaft 37 and the base plate 23, and the connecting circular groove 35 and the base plate 23 are an integral structure, and a bearing seat 36 is fixed inside the connecting circular groove 35 by nail-free glue, and the inner connecting shaft 37 is movably connected to the base plate 23 through the bearing seat 36; The connecting rod 17 is welded on the outer wall of the connecting turntable 24. Two connecting rods 17 are provided. The angle between the two connecting rods 17 is 45 degrees. One end of each of the two connecting rods 17 is welded with a steel pipe bearing ring 16. The bearing hole seat 25 is welded at one end of the support frame 3, and a lifting platform seat 28 is provided at the upper end of the bearing hole seat 25, and four end blocks 29 are welded at the upper end of the lifting platform seat 28, and a contact roller 30 is provided between two adjacent end blocks 29, and both ends of the contact roller 30 are movably connected to the end block 29 through a rotating shaft; The stop frame plate 10 is installed at the upper end position of the support frame 3, and a center through groove 31 is provided at the inner center position of the stop frame plate 10. The lower end of the stop frame plate 10 is integrally formed with a bottom block 32, and an inner groove 33 is provided on the inner wall of the bottom block 32. An electromagnet 34 is fixed inside the inner groove 33 by nail-free glue, and the stop frame plate 10 is adsorbed and connected to the support frame 3 through the electromagnet 34.

[0021] See also Figure 1A linkage shaft 8 is provided on one side of the movable pedestal 6, one end of the linkage shaft 8 is transmission-connected to the output shaft of the driving motor 7 through a coupling, and a grinding head 9 is welded on the other end of the linkage shaft 8. The linkage shaft 8 and the grinding head 9 are connected with the stop frame plate 10 through the center through groove 31. The linkage shaft 8 provided on one side of the movable pedestal 6 plays a role in driving the grinding head 9 to rotate.

[0022] See also Figure 1 and Figure 5 A support platform 14 is welded on the outer wall of the second bracket 2, and a second hydraulic cylinder 15 is arranged on the upper end of the support platform 14. The piston rod of the second hydraulic cylinder 15 passes through the bearing hole seat 25 and is welded to the bottom of the lifting platform seat 28. The support platform 14 welded on the outer wall of the second bracket 2 plays the role of supporting the second hydraulic cylinder 15.

[0023] See also Figure 1 An extension rod 18 is welded on the outer wall of one side of the lifting platform 28, and a stop plate 19 is welded on one end of the extension rod 18. The extension rod 18 welded on the outer wall of one side of the lifting platform 28 plays the role of supporting the stop plate 19 to abut and limit one end of the single-head welded pipe.

[0024] See also Figure 4 and Figure 7 Two adjustment holes 26 are arranged inside the connecting turntable 24, and a positioning hole 39 is arranged on the outer side of the connecting circular groove 35. The positioning hole 39 and the base plate 23 are an integral structure. The aperture of the positioning hole 39 is equal to the aperture of the adjustment hole 26. The two adjustment holes 26 arranged inside the connecting turntable 24 play the role of correspondingly connecting with the positioning holes 39 after the auxiliary swinging activity.

[0025] See also Figure 4 and Figure 7 A positioning pin 27 is installed inside the positioning hole 39 and an adjustment through-hole 26, and the connecting turntable 24 is fixedly connected to the base plate 23 through the positioning pin 27. The positioning pin 27 installed inside the positioning hole 39 and an adjustment through-hole 26 plays a role in positioning after the swinging activity.

[0026] See also Figure 8 A screw slider 40 is welded at the bottom of the movable pedestal 6, and the movable pedestal 6 is movably connected to the threaded screw 5 in the support frame 3 through the screw slider 40. The screw slider 40 welded at the bottom of the movable pedestal 6 plays a role in assisting the movable pedestal 6 to slide along the support frame 3.

[0027] See also Figure 2A servo motor 20 is arranged at the other end of the support frame 3. The output shaft of the servo motor 20 is transmission-connected with the threaded screw 5 inside the support frame 3 through a coupling mechanism. The servo motor 20 arranged at the other end of the support frame 3 plays a role in driving the threaded screw 5 to rotate.

[0028] See also Figure 7 A limiting shaft disc 38 is welded at one end of the inner connecting shaft 37, and the size of the limiting shaft disc 38 is larger than the diameter of the bearing seat 36. The limiting shaft disc 38 welded at one end of the inner connecting shaft 37 plays a role in assisting the inner connecting shaft 37 to limit and prevent it from falling off.

[0029] See also Figure 1 and Figure 6 A power box 4 is fixed on the outer wall of the first bracket 1 by screws, and a power supply connection 11 is arranged between the power box 4 and the stop frame plate 10. The output end of the power box 4 is electrically connected to the input end of the electromagnet 34 through the power supply connection 11. The power box 4 fixed on the outer wall of the first bracket 1 by screws serves to supply power to the electromagnet 34.

[0030] Working principle: When in use, firstly, two single-end welded pipes that need to be de-welded are respectively placed on two steel pipe bearing rings 16, and the two steel pipe bearing rings 16 are connected to the connecting turntable 24 through two connecting rods 17, and the connecting turntable 24 is rotatably connected to the base plate 23 through the inner connecting shaft 37, so that the two steel pipe bearing rings 16 are in a swinging adjustment mechanism with the connecting turntable 24 as the center. When de-welding, firstly rotate one steel pipe bearing ring 16 to the vertical position, and then install the positioning pin 27 to fix the steel pipe bearing ring 1 6, the corresponding adjustment through hole 26 is connected with the positioning hole 39, so as to position the position after the swing adjustment. After the positioning is completed, the single-head welded pipe is pushed so that the tail end of the single-head welded pipe is kept flush with the stop plate 19. Then, according to the length of the single-head welded pipe, the stop frame plate 10 is installed on the support frame 3 so that the two ends of the single-head welded pipe are stably limited at the position between the stop frame plate 10 and the stop plate 19, and the power switch of the power box 4 is pressed, so that the electromagnet 34 is powered on to generate magnetic force, and is adsorbed and fixedly connected with the support frame 3. Then the first liquid The pressure cylinder 13 drives the lower pressure plate 21 to press down, and the second hydraulic cylinder 15 drives the lifting platform 28 to rise, so that the bottom of the single-head welded pipe is supported at a position between the two contact rollers 30, and the top of the single-head welded pipe is pressed down and positioned by the lower pressure plate 21, thereby realizing the all-round positioning of the single-head welded pipe up, down, left and right. After the positioning is completed, the servo motor 20 drives the threaded screw 5 to rotate, so that the movable platform 6 slides along the supporting frame 3, and the grinding rotary head 9 rotates and grinds inside the single-head welded pipe, thereby cutting and removing the weld on the inner wall of the single-head welded pipe, and removing After the weld bead processing is completed, the drive motor 7, the first hydraulic cylinder 13 and the second hydraulic cylinder 15 return to their positions at the same time, then the positioning pin 27 is pulled out, and the other steel pipe supporting ring 16 is rotated to the vertical position. At this time, the single-head welded pipe with the weld bead removed is swung and pushed to the outside, and then the weld bead removal processing is continued for the replaced single-head welded pipe while the finished product is unloaded. After the finished product is unloaded, the single-head welded pipe to be processed is replaced, and so on. The efficiency of the single-head welded pipe internal polishing and weld bead removal processing is improved, and the use of the swing-type weld bead removal device of the single-head welded pipe internal polishing machine is completed.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A swing-type weld bead removal device for a single-head welded pipe internal polishing machine, comprising a first bracket (1) and a second bracket (2), a support frame (3) being welded at the center of the first bracket (1) and the second bracket (2), a threaded screw (5) being arranged inside the support frame (3), a movable pedestal (6) being arranged above the threaded screw (5), and a driving motor (7) being arranged on the movable pedestal (6); Features: Also includes: A top frame (12) is welded to the upper end of the second bracket (2), and a first hydraulic cylinder (13) is arranged on the top of the top frame (12), a lower pressure plate (21) is welded to the piston rod of the first hydraulic cylinder (13), a mounting connecting rod (22) is welded to the outer wall of one side of the top frame (12), and a base plate (23) is welded to one end of the mounting connecting rod (22); A connecting turntable (24) is arranged on an outer wall of one side of the base plate (23), and an inner connecting shaft (37) is integrally formed on the inner wall of the connecting turntable (24), a connecting circular groove (35) is arranged at the connecting position between the inner connecting shaft (37) and the base plate (23), the connecting circular groove (35) and the base plate (23) are an integral structure, a bearing seat (36) is fixed inside the connecting circular groove (35) by means of nail-free glue, and the inner connecting shaft (37) is movably connected to the base plate (23) via the bearing seat (36); A connecting rod (17) is welded to the outer wall of the connecting rotating disk (24), two connecting rods (17) are provided, the angle between the two connecting rods (17) is forty-five degrees, and one end of each of the two connecting rods (17) is welded with a steel pipe bearing ring (16); A bearing hole seat (25) is welded and arranged at one end of the support frame (3), and a lifting platform seat (28) is arranged at the upper end of the bearing hole seat (25), and four end blocks (29) are welded and arranged at the upper end of the lifting platform seat (28), and a contact roller (30) is arranged between two adjacent end blocks (29), and the two ends of the contact roller (30) are movably connected to the end blocks (29) via a rotating shaft; A stop frame plate (10) is mounted on the upper end of the support frame (3), and a center through groove (31) is provided at the inner center position of the stop frame plate (10). A bottom block (32) is integrally formed at the lower end of the stop frame plate (10), and an inner groove (33) is provided on the inner wall of the bottom block (32). An electromagnet (34) is fixed inside the inner groove (33) by nail-free glue, and the stop frame plate (10) is adsorbed and connected to the support frame (3) via the electromagnet (34).

2. The swing-type weld bead removal device for the single-head welded pipe internal polishing machine according to claim 1 is characterized in that: A linkage shaft (8) is provided on one side of the movable pedestal (6); one end of the linkage shaft (8) is drivingly connected to the output shaft of the drive motor (7) via a coupling; a grinding rotary head (9) is welded to the other end of the linkage shaft (8); the linkage shaft (8) and the grinding rotary head (9) are connected to the stop frame plate (10) via a central through slot (31).

3. The swing-type weld bead removal device for the single-head welded pipe internal polishing machine according to claim 1 is characterized in that: A support platform (14) is welded to the outer wall of the second bracket (2), a second hydraulic cylinder (15) is provided at the upper end of the support platform (14), and a piston rod of the second hydraulic cylinder (15) passes through the bearing hole seat (25) and is welded to the bottom of the lifting platform seat (28).

4. The swing-type weld bead removal device for the single-head welded pipe internal polishing machine according to claim 1 is characterized in that: An extension rod (18) is welded to an outer wall of one side of the lifting platform (28), and a stop plate (19) is welded to one end of the extension rod (18).

5. The swing-type weld bead removal device for the single-head welded pipe internal polishing machine according to claim 1 is characterized in that: The connecting rotating disk (24) is provided with two positioning through holes (26) inside, and the connecting circular groove (35) is provided with a positioning hole (39) outside. The positioning hole (39) and the base disk (23) are an integral structure, and the aperture of the positioning hole (39) is equal to the aperture of the positioning through hole (26).

6. The swing-type weld bead removal device for the single-head welded pipe internal polishing machine according to claim 5 is characterized in that: A positioning pin (27) is installed inside the positioning hole (39) and the one positioning through hole (26), and the connecting turntable (24) is fixedly connected to the base plate (23) via the positioning pin (27).

7. The swing-type weld bead removal device for the single-head welded pipe internal polishing machine according to claim 1 is characterized in that: A screw slider (40) is welded to the bottom of the movable pedestal (6), and the movable pedestal (6) is movably connected to a threaded screw (5) in the support frame (3) via the screw slider (40).

8. The swing-type weld bead removal device for the single-head welded pipe internal polishing machine according to claim 1 is characterized in that: A servo motor (20) is provided at the other end of the support frame (3), and an output shaft of the servo motor (20) is transmission-connected to a threaded screw (5) inside the support frame (3) via a coupling mechanism.

9. The swing-type weld bead removal device for the single-head welded pipe internal polishing machine according to claim 1 is characterized in that: A limiting shaft disc (38) is welded to one end of the inner connecting shaft (37), and the size of the limiting shaft disc (38) is larger than the diameter of the bearing seat (36).

10. The swing-type weld bead removal device for the single-head welded pipe internal polishing machine according to claim 1, characterized in that: A power supply box (4) is fixedly mounted on the outer wall of the first bracket (1) by means of screws, a power supply connection (11) is arranged between the power supply box (4) and the stop frame plate (10), and an output end of the power supply box (4) is electrically connected to an input end of the electromagnet (34) via the power supply connection (11).

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