A pipe welding machine for galvanized pipe manufacturing

Abstract

The application discloses a pipe welding machine for galvanized pipe manufacturing, and relates to the technical field of pipe welding.The pipe welding machine for galvanized pipe manufacturing comprises a base, a pressure roller, a first guide roller and a guide groove are arranged, the output end of a driving motor drives a driving roller to rotate, the driving roller drives another driving roller to rotate through two driving gears, the two driving rollers pull the welding wire, one end of the welding wire is guided into the moving-out groove through a plurality of groups of corresponding two second guide rollers, and then is guided out through a plurality of groups of corresponding two guide wheels, so that the one end of the welding wire is in contact with the outside of the top pipe, at this time, the two driving rollers continue to pull the welding wire, the welding wire moves along the outside of the top pipe, the movement of the welding wire is guided through the guide groove, and the welding wire winds around the outside of the top pipe for one circle, so that the welding wire can be automatically wound to the outside of the top pipe for welding use.

Description

Technical Field

[0001] This invention relates to the field of pipe welding technology, specifically to a pipe welding machine for manufacturing galvanized pipes. Background Technology

[0002] When welding galvanized pipes, an electric arc welding machine is required. Before welding, the welding wire can be pre-wound manually around the outside of the pipe. However, this process is influenced by experience; inexperienced operators, worried about insufficient welding material, may wrap the wire multiple times or press it too tightly. This can lead to excessive melting of the material during welding, forming large weld beads or unnecessary dripping, wasting welding wire. Therefore, a pipe welding machine for galvanized pipe manufacturing has been proposed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a pipe welding machine for galvanized pipe manufacturing, which solves the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a pipe welding machine for manufacturing galvanized pipes, comprising a base, a fixed half-ring fixedly connected to the front end of the base, a movable half-ring fixedly connected to one side of the fixed half-ring via quick-tightening screws, and semi-gear rings fixedly connected to the inner walls of both the movable and fixed half-rings. A guide block is movably connected inside the movable half-ring, and a second motor is fixedly connected inside the guide block. A movable gear is fixedly connected to the output end of the second motor, with one end extending to the outside of the guide block. The movable gear engages with both semi-gear rings. An arc welding gun is mounted on the top of the guide block, above the movable and fixed half-rings. A fixing frame is fixedly connected to the top of the base, and fixing posts are fixedly connected to both ends of the surface of the fixing frame. One end of each of the four fixed columns is fixedly connected to a first half-ring. Two fixed blocks are fixedly connected to the outer side of the first half-ring. A hinge shaft is rotatably connected between the two fixed blocks. A second half-ring is fixedly connected to the outer side of the hinge shaft. Several drive cylinders are fixedly connected to the outer sides of the first and second half-rings. Each drive cylinder has a sliding screw rotatably connected to it via bearings. A rectangular block is threaded onto the outer side of each sliding screw. A push column is fixedly connected to one end of each rectangular block. One end of each push column extends to the outer side of the drive cylinder and to the inner side of the first and second half-rings. A side frame is fixedly connected to one end of each push column. A fixed plate is fixedly connected to the top of each side frame. A first guide roller is rotatably connected to the bottom of each fixed plate via bearings. A guide groove is formed on the outer side of each first guide roller.

[0005] Preferably, the top of each drive cylinder is rotatably connected to a rotating shaft via a bearing, the bottom of each rotating shaft extends into the interior of the drive cylinder, and bevel gears that mesh with each other are fixedly sleeved on the outer side of both the rotating shaft and the sliding lead screw. A scale is embedded on the surface of each drive cylinder, and a scale pointer is fixedly connected to the top of each rectangular block.

[0006] Preferably, the height of the drive cylinder on the second half-ring is higher than the height of the drive cylinder on the first half-ring, and the other end of the second half-ring and the first half-ring are fixedly connected by a second screw. The top of each of the fixing plates is fixedly connected with a pressure roller.

[0007] Preferably, a removal groove is provided on one side of the first semi-ring, an extension column is fixedly connected to the top of the first semi-ring, a movable column is slidably connected inside the extension column, a mounting frame is fixedly connected to one end of the movable column, a connecting plate is fixedly connected to the front end of the mounting frame, a mounting plate is fixedly connected to one end of the connecting plate, one end of the mounting plate passes through the removal groove and extends to the inner side of the first semi-ring, several guide wheels are rotatably connected to the top two ends of the mounting plate through bearings, several second guide rollers are rotatably connected to the top two ends of the connecting plate through bearings, and two guide frames are fixedly connected to the top of the connecting plate.

[0008] Preferably, two drive rollers are rotatably connected to the top of the connecting plate and behind the second guide roller via bearings. A drive box is fixedly connected to the bottom of the connecting plate, and a drive motor is fixedly connected to the bottom of the drive box. The bottom of each drive roller extends into the drive box and is fixedly fitted with a meshing drive gear. The output end of the drive motor is connected to the bottom end of one drive roller via a coupling. Both the drive roller and the second guide roller are located below the guide frame.

[0009] Preferably, a top tube is placed inside the first half-ring and the second half-ring, and a bottom tube is placed below the top tube. A positioning post is fixedly connected to one side of the inner cavity of the mounting frame. A wire roller is sleeved on the outside of the positioning post. An external thread is opened on the outside of one end of the positioning post, and a nut is threaded to the outside of one end of the positioning post through the external thread. Welding wire is wound on the outside of the wire roller. One end of the welding wire passes through the middle of two drive rollers, several sets of two second guide rollers, and several sets of two guide wheels to the outside of the bottom end of the top tube. The other end of the welding wire passes through the drive gear and is wound around the outside of the top tube.

[0010] Preferably, a second cutter head is fixedly connected to the top of the mounting plate and in front of the foremost guide wheel, and a hydraulic rod is fixedly connected to the top of the mounting plate and to the right of the second cutter head, with a first cutter head fixedly connected to the telescopic end of the hydraulic rod.

[0011] Preferably, the surface of each movable column is provided with a plurality of slots, the top of the extension column is provided with a threaded groove, a first screw is threadedly connected inside the threaded groove, the bottom end of the first screw is inserted into the corresponding slot, a handle is fixedly connected to the back of the fixing frame, a controller is fixedly connected to the top of the handle, and the arc welding gun, the base and the controller are electrically connected to the welding host through wires.

[0012] This invention provides a pipe welding machine for manufacturing galvanized pipes, which has the following advantages:

[0013] 1. This pipe welding machine for galvanized pipe manufacturing is equipped with a pressure roller, a first guide roller, and a guide groove. The output end of the drive motor drives a drive roller to rotate, which in turn drives another drive roller to rotate through two drive gears. The two drive rollers pull the welding wire, guiding one end of the welding wire through several sets of corresponding second guide rollers into the removal groove. Then, it is guided out through several sets of corresponding guide wheels, so that one end of the welding wire contacts the outside of the top pipe. At this time, the two drive rollers continue to pull the welding wire, causing the welding wire to move along the outside of the top pipe. The guide groove guides the movement of the welding wire until the welding wire has circled the outside of the top pipe once, thus automatically winding the welding wire around the outside of the top pipe for welding.

[0014] 2. This pipe welding machine for galvanized pipe manufacturing is equipped with a second half-ring, a first half-ring, and a drive cylinder. Before use, the user adjusts the position of the first guide roller according to the diameter of the jacking pipe to be welded. Then, by rotating the rotating shaft, the rotating shaft drives the sliding screw through a bevel gear, causing the sliding screw to drive a rectangular block to move the push column. This push column then moves the side frame, the fixed plate, and the first guide roller, adjusting the position of the first guide roller to accommodate jacking pipes of various diameters. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the winding structure of the present invention;

[0017] Figure 3 For the present invention Figure 2 Top view of the structure;

[0018] Figure 4 For the present invention Figure 2 A schematic diagram of the structure viewed from below;

[0019] Figure 5 This is a schematic diagram of the structure on the connecting plate of the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the welding wire after winding according to the present invention;

[0021] Figure 7 This is a schematic diagram of the structure of the bottom tube welding wire after winding according to the present invention;

[0022] Figure 8 This is a schematic diagram of the internal structure of the drive cylinder of the present invention;

[0023] Figure 9 This is a schematic diagram of the internal structure of the movable column of the present invention;

[0024] Figure 10 This is a schematic diagram of the internal structure of the drive box of the present invention;

[0025] Figure 11 This is a schematic diagram of the structure on the mounting plate of the present invention;

[0026] Figure 12 This is a schematic diagram of the internal structure of the fixed semi-ring and the movable semi-ring of the present invention.

[0027] In the diagram: 1. Base; 3. Fixing frame; 4. Handle; 5. Bottom tube; 6. Top tube; 7. Fixing column; 8. First half-ring; 9. Second half-ring; 10. Fixing block; 11. Hinge shaft; 13. Drive cylinder; 14. Sliding screw; 15. Rectangular block; 16. Push column; 17. Rotating shaft; 18. Bevel gear; 19. Side frame; 20. Fixing plate; 21. First guide roller; 22. Guide groove; 23. Pressure roller; 24. Removal groove; 25. Mounting plate; 26. Guide wheel; 27. Connecting plate; 28. Guide frame; 29. ​​Second guide roller; 30. Drive roller; 31. 33. Drive box; 34. Drive gear; 35. Drive motor; 36. Welding wire; 37. Mounting bracket; 38. Positioning post; 39. Wire roller; 40. Nut; 41. Welding host; 42. Extension post; 43. Moving post; 44. Slot; 45. Threaded groove; 46. First screw; 47. Scale; 48. Second screw; 49. First cutter head; 50. Second cutter head; 51. Hydraulic rod; 52. Fixed half ring; 53. Moving half ring; 54. Wire; 55. Welding torch; 56. Guide block; 57. Second motor; 58. Moving gear; 59. Half gear ring. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Example 1

[0030] Please see Figures 1 to 12This invention provides a technical solution: a pipe welding machine for manufacturing galvanized pipes, comprising a base 1, a fixed half-ring 51 fixedly connected to the front end of the base 1, a movable half-ring 52 fixedly connected to one side of the fixed half-ring 51 by a quick-tightening screw, and half-tooth rings 58 fixedly connected to the inner walls of both the movable half-ring 52 and the fixed half-ring 51, a guide block 55 movably connected inside the movable half-ring 52, a second motor 56 fixedly connected inside the guide block 55, a movable gear 57 fixedly connected to the output end of the second motor 56, one end of the movable gear 57 extending to the outside of the guide block 55, and the movable gear 57 engaging with both half-tooth rings 58, an arc welding gun 54 mounted on the top of the guide block 55 above the movable half-ring 52 and the fixed half-ring 51, a fixed frame 3 fixedly connected to the top of the base 1, and four fixed posts 7 fixedly connected to the left and right ends of the surface of the fixed frame 3. One end of the first half ring 8 is fixedly connected to a first half ring 8. Two fixed blocks 10 are fixedly connected to the outside of the first half ring 8. A hinge shaft 11 is rotatably connected between the two fixed blocks 10. A second half ring 9 is fixedly connected to the outside of the hinge shaft 11. Several drive cylinders 13 are fixedly connected to the outside of the first half ring 8 and the second half ring 9. A sliding screw 14 is rotatably connected to the inside of each drive cylinder 13 through a bearing. A rectangular block 15 is threaded to the outside of each sliding screw 14. A push column 16 is fixedly connected to one end of each rectangular block 15. One end of each push column 16 extends to the outside of the drive cylinder 13 and to the inside of the first half ring 8 and the second half ring 9. A side frame 19 is fixedly connected to one end of each push column 16. A fixed plate 20 is fixedly connected to the top of each side frame 19. A first guide roller 21 is rotatably connected to the bottom of each fixed plate 20 through a bearing. A guide groove 22 is opened on the outside of each first guide roller 21.

[0031] The top of each drive cylinder 13 is rotatably connected to a rotating shaft 17 via a bearing. The bottom of each rotating shaft 17 extends into the drive cylinder 13. The rotating shaft 17 and the outer side of the sliding lead screw 14 are both fixedly fitted with meshing bevel gears 18. Each surface of the drive cylinder 13 is inlaid with a scale 46. Each rectangular block 15 is fixedly connected to a scale pointer. By observing the scale on the surface of the scale 46 pointed to by the pointer on the top of the rectangular block 15, the moving distance between the first guide roller 21 and the pressure roller 23 can be obtained.

[0032] The height of the drive cylinder 13 on the second half ring 9 is higher than the height of the drive cylinder 13 on the first half ring 8. The other end of the second half ring 9 and the first half ring 8 are fixedly connected by the second screw 47. The top of the fixing plate 20 is fixedly connected with the pressure roller 23. Since the diameter of the welding wire 35 is constant, when the diameter of the top tube 6 changes, the positions of the side frame 19, the fixing plate 20, the first guide roller 21 and the pressure roller 23 are adjusted. At this time, the pressure roller 23 contacts the outside of the top tube 6. At this time, the space between the first guide roller 21 and the top tube 6 can pass through the welding wire 35.

[0033] One side of the first half-ring 8 is provided with a removal groove 24. An extension column 41 is fixedly connected to the top of the first half-ring 8. A movable column 42 is slidably connected inside the extension column 41. A mounting bracket 36 is fixedly connected to one end of the movable column 42. A connecting plate 27 is fixedly connected to the front end of the mounting bracket 36. A mounting plate 25 is fixedly connected to one end of the connecting plate 27. One end of the mounting plate 25 passes through the removal groove 24 and extends to the inner side of the first half-ring 8. Several guide wheels 26 are rotatably connected to the top two ends of the mounting plate 25 through bearings. Several second guide rollers 29 are rotatably connected to the top two ends of the connecting plate 27 through bearings. Two guide frames 28 are fixedly connected to the top of the connecting plate 27. The second guide rollers 29 guide the movement of the welding wire 35 pulled by the drive roller 30.

[0034] Two drive rollers 30 are rotatably connected to the top of the connecting plate 27 and behind the second guide roller 29 via bearings. A drive box 31 is fixedly connected to the bottom of the connecting plate 27, and a drive motor 34 is fixedly connected to the bottom of the drive box 31. The bottom of each drive roller 30 extends into the drive box 31 and is fixedly fitted with a meshing drive gear 33. The output end of the drive motor 34 is connected to the bottom end of one drive roller 30 via a coupling. Both the drive roller 30 and the second guide roller 29 are located below the guide frame 28. The drive motor 34 can drive the two drive rollers 30 to rotate and pull the welding wire 35.

[0035] A jacking pipe 6 is placed inside the first half-ring 8 and the second half-ring 9. A bottom pipe 5 is placed below the jacking pipe 6. A positioning post 37 is fixedly connected to one side of the inner cavity of the mounting bracket 36. A wire roller 38 is sleeved on the outside of the positioning post 37. An external thread is opened on the outside of one end of the positioning post 37, and a nut 39 is threaded to the outside of one end of the positioning post 37 through the external thread. Welding wire 35 is wound on the outside of the wire roller 38. One end of the welding wire 35 passes through the middle of two drive rollers 30, several sets of two second guide rollers 29, and several sets of two guide wheels 26, and passes to the outside of the bottom end of the jacking pipe 6. One end of the welding wire 35 passes through the drive gear 33 and is wrapped around the outside of the top tube 6. When the two drive rollers 30 rotate to pull the welding wire 35, the welding wire 35 is released from the outside of the wire roller 38. When the welding wire 35 needs to be replaced, the nut 39 is unscrewed from the outside of the positioning post 37, and then the wire roller 38 is moved from the outside of the positioning post 37. Then the new wire roller 38 is put on the outside of the positioning post 37, and then the nut 39 is screwed on the external thread on the outside of the positioning post 37. Then the first end of the welding wire 35 passes through the two drive rollers 30 and the second guide roller 29.

[0036] A second cutter head 49 is fixedly connected to the front of a guide wheel 26 at the top of the mounting plate 25. A hydraulic rod 50 is fixedly connected to the top of the mounting plate 25 and to the right of the second cutter head 49. A first cutter head 48 is fixedly connected to the telescopic end of the hydraulic rod 50. The first cutter head 48 can be driven to move by the telescopic end of the hydraulic rod 50, so that the first cutter head 48 and the second cutter head 49 can cooperate to cut the welding wire 35.

[0037] Example 2

[0038] Please see Figures 1 to 4 and Figure 9 Based on Embodiment 1, the present invention provides a technical solution: the surface of the movable column 42 is provided with a plurality of slots 43, the top of the extension column 41 is provided with a threaded groove 44, the threaded groove 44 is threaded with a first screw 45, the bottom end of the first screw 45 is inserted into the corresponding slot 43, the back of the fixed frame 3 is fixedly connected with a handle 4, the top of the handle 4 is fixedly connected with a controller, and the arc welding gun 54, the base 1 and the controller are electrically connected to the welding host 40 through a wire 53.

[0039] Working principle: This pipe welding machine for galvanized pipe manufacturing, when in use, requires adjusting the position of the first guide roller 21 before use, based on the diameter of the top pipe 6 to be welded. At this time, rotating the rotating shaft 17 causes the sliding screw 14 to rotate via the bevel gear 18, which in turn drives the rectangular block 15 to move the push column 16. The push column 16 then moves the side frame 19, the fixed plate 20, and the first guide roller 21. After adjusting the position of the first guide roller 21, one end of the first screw 45 is unscrewed from the slot 43. The mounting frame 36 is moved, causing it to move the moving column 42. The mounting frame 36 then moves the connecting plate 27, mounting plate 25, guide wheel 26, first cutter head 48, second cutter head 49, and hydraulic rod 50 through the removal groove 24 to the outside of the first semi-ring 8. The positions of the guide wheel 26, the first cutter head 48, the second cutter head 49, and the hydraulic rod 50 are adjusted. Then, the first screw... The bottom end of wire 45 is screwed into the corresponding slot 43 to fix the positions of the moving column 42, mounting bracket 36, connecting plate 27, mounting plate 25, guide wheel 26, first cutter head 48, second cutter head 49 and hydraulic rod 50, so as to adapt to the top pipe 6 of various diameters. When the fixed plate 20 moves, it drives the pressure roller 23 to move together. At this time, by holding the handle 4, the first half ring 8 is placed behind the top pipe 6 so that the pressure roller 23 contacts the outside of the top pipe 6. Then, the second half ring 9 is rotated so that the second half ring 9 covers the outside of the top pipe 6. Then, the second screw 47 is used to fix one end of the second half ring 9 to the first half ring 8. At this time, the outside of the pressure roller 23 on the inner side of the second half ring 9 contacts the surface of the top pipe 6, thereby clamping the first half ring 8 and the second half ring 9 on the outside of the top pipe 6 to fix the machine. Then, the quick-tight screw is used to fix the moving half ring 52 on the fixed half ring 51 to install the arc welding gun 54.

[0040] Then, the output of the drive motor 34 drives one drive roller 30 to rotate, which in turn drives another drive roller 30 to rotate via two drive gears 33. The two drive rollers 30 pull the welding wire 35, guiding one end of the wire through several sets of corresponding second guide rollers 29 into the removal groove 24, and then through several sets of corresponding guide wheels 26, bringing one end of the wire into contact with the outer side of the jacking pipe 6. At this point, the two drive rollers 30 continue to pull the wire 35, causing it to move along the outer side of the jacking pipe 6. The guide groove 22 guides the movement of the wire 35 until it has circled the outer side of the jacking pipe 6 once. Then, the extension end of the hydraulic rod 50 pushes the first cutter head 48. The first cutter head 48 and the second cutter head 49 are moved to cut the welding wire 35. At this time, a ring of welding wire 35 is placed on the top of the bottom tube 5 and on the outside of the top tube 6. Then the handle 4 is moved up, so that the arc welding gun 54 is moved up. Then the output end of the second motor 56 drives the moving gear 57 to rotate, so that the moving gear 57 moves along the inside of the half gear ring 58. Since the two ends of the moving half ring 52 and the fixed half ring 51 are open structures, the guide block 55 can enter the fixed half ring 51 through the moving half ring 52 and enter the moving half ring 52 through the fixed half ring 51. The guide block 55 drives the arc welding gun 54 to move, so that the arc welding gun 54 uses arc welding to weld the top tube 6 and the bottom tube 5 together through the welding ring.

[0041] After welding, unscrew the second screw 47, rotate the second half ring 9 so that the second half ring 9 rotates about the hinge shaft 11 as the axis, so that the first half ring 8 opens. When disassembling, unscrew the quick-release screw and remove the movable half ring 52 from one side of the fixed half ring 51. Then, from the rear, remove the first half ring 8, the second half ring 9, the fixed half ring 51, and the arc welding gun 54 from the outside of the top pipe 6 and the bottom pipe 5.

[0042] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The installation methods between equipment are also the same as conventional installation methods in the prior art. For example, the two ends of shaft-shaped parts are connected by bearings, the connection position of valve components is provided with anti-leakage rubber strips, the outside of threaded rods or lead rods is provided with dust covers, and the equipment can be driven by either built-in batteries or external power supply. The control method is automatic control by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this invention is mainly used to protect mechanical devices, this invention will not explain the control method and circuit connection in detail. The external controller mentioned in the specification can play a control role for the electrical components mentioned herein, and the external controller is a conventional known device.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pipe welding machine for manufacturing galvanized pipes, comprising a base (1), characterized in that: A fixing frame (3) is fixedly connected to the top of the base (1). Fixing columns (7) are fixedly connected to both the left and right ends of the surface of the fixing frame (3). A first half-ring (8) is fixedly connected to one end of each of the four fixing columns (7). Two fixing blocks (10) are fixedly connected to the outside of the first half-ring (8). A hinge shaft (11) is rotatably connected between the two fixing blocks (10). A second half-ring (9) is fixedly connected to the outside of the hinge shaft (11). Several drive cylinders (13) are fixedly connected to the outside of the first half-ring (8) and the second half-ring (9). The drive cylinders (13) are rotatably connected to a sliding bearing inside each drive cylinder (13). The sliding screw (14) has a rectangular block (15) threaded on its outer side. One end of the rectangular block (15) is fixedly connected to a push column (16). One end of the push column (16) extends to the outer side of the drive cylinder (13) and to the inner side of the first half ring (8) and the second half ring (9). One end of the push column (16) is fixedly connected to a side frame (19). The top of the side frame (19) is fixedly connected to a fixing plate (20). The bottom of the fixing plate (20) is rotatably connected to a first guide roller (21) through a bearing. The outer side of the first guide roller (21) is provided with a guide groove (22). The top of each drive cylinder (13) is rotatably connected to a rotating shaft (17) via a bearing. The bottom of each rotating shaft (17) extends into the drive cylinder (13). The rotating shaft (17) and the outer side of the sliding screw (14) are both fitted with meshing bevel gears (18). Each drive cylinder (13) is inlaid with a scale (46). Each rectangular block (15) is fixedly connected to a scale pointer on its top. The first half-ring (8) has a removal groove (24) on one side. An extension column (41) is fixedly connected to the top of the first half-ring (8). A movable column (42) is slidably connected inside the extension column (41). A mounting frame (36) is fixedly connected to one end of the movable column (42). A connecting plate (27) is fixedly connected to the front end of the mounting frame (36). A mounting plate (25) is fixedly connected to one end of the connecting plate (27). One end of the mounting plate (25) passes through the removal groove (24) and extends to the inside of the first half-ring (8). Several guide wheels (26) are rotatably connected to the top two ends of the mounting plate (25) through bearings. Several second guide rollers (29) are rotatably connected to the top two ends of the connecting plate (27) through bearings. Two guide frames (28) are fixedly connected to the top of the connecting plate (27). Two drive rollers (30) are rotatably connected to the top of the connecting plate (27) and behind the second guide roller (29) via bearings. A drive box (31) is fixedly connected to the bottom of the connecting plate (27). A drive motor (34) is fixedly connected to the bottom of the drive box (31). The bottom of each drive roller (30) extends into the drive box (31) and is fixedly fitted with a meshing drive gear (33). The output end of the drive motor (34) is connected to the bottom end of one drive roller (30) via a coupling. Both the drive roller (30) and the second guide roller (29) are located below the guide frame (28).

2. The pipe welding machine for manufacturing galvanized pipes according to claim 1, characterized in that: The height of the drive cylinder (13) on the second half ring (9) is higher than the height of the drive cylinder (13) on the first half ring (8). The other end of the second half ring (9) and the first half ring (8) are fixedly connected by the second screw (47). The top of the fixed plate (20) is fixedly connected with the pressure roller (23).

3. A pipe welding machine for manufacturing galvanized pipes according to claim 1, characterized in that: The first half-ring (8) and the second half-ring (9) contain a top tube (6), and the bottom tube (5) is placed below the top tube (6). A positioning post (37) is fixedly connected to one side of the inner cavity of the mounting bracket (36). A wire roller (38) is sleeved on the outside of the positioning post (37). An external thread is opened on the outside of one end of the positioning post (37), and a nut (39) is threaded on the outside of one end of the positioning post (37) through the external thread. A brazing wire (35) is wound on the outside of the wire roller (38). One end of the brazing wire (35) passes through the middle of two drive rollers (30), several sets of two second guide rollers (29), and several sets of two guide wheels (26) to the outside of the bottom end of the top tube (6). One end of the brazing wire (35) passes through the drive gear (33) and is wound around the outside of the top tube (6).

4. A pipe welding machine for manufacturing galvanized pipes according to claim 1, characterized in that: A second cutter head (49) is fixedly connected to the top of the mounting plate (25) and in front of the foremost guide wheel (26). A hydraulic rod (50) is fixedly connected to the top of the mounting plate (25) and to the right of the second cutter head (49). A first cutter head (48) is fixedly connected to the telescopic end of the hydraulic rod (50).

5. A pipe welding machine for manufacturing galvanized pipes according to claim 1, characterized in that: The surface of the movable column (42) is provided with a number of slots (43), the top of the extension column (41) is provided with a threaded groove (44), the threaded groove (44) is threaded with a first screw (45), the bottom end of the first screw (45) is inserted into the corresponding slot (43), the front end of the base (1) is fixedly connected with a high frequency induction heating head (2), the back of the fixed frame (3) is fixedly connected with a handle (4), the top of the handle (4) is fixedly connected with a controller, and the high frequency induction heating head (2), the base (1) and the controller are electrically connected to the high frequency induction heating machine (40) through wires.

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