A pipe welding machine for producing a four-way pipe

Abstract

This invention discloses a welding machine for producing four-way pipes, relating to the field of four-way pipe welding technology. It includes a workbench, a top seat, and a horizontal cylinder. The top seat is symmetrically fixed to the top of the workbench. The main structure of this invention includes stepped columns and horizontal cylinders. The stepped columns are used to temporarily buffer the vertical main pipe, while a composite expansion assembly is provided on the outside of the horizontal cylinder. This composite expansion assembly can fit and fix the horizontal branch pipe to the outer wall of the horizontal cylinder. Two horizontal cylinders are provided with a docking insertion assembly at one end. This docking insertion assembly can simultaneously insert the two horizontal cylinders into the two sides of the vertical main pipe, avoiding problems such as angle deviation and inconsistent insertion depth caused by traditional manual insertion. This not only improves the assembly efficiency of the branch pipe and the main pipe but also ensures the assembly accuracy, providing a reliable prerequisite for subsequent automatic welding and significantly enhancing production consistency and automation levels.

Description

Technical Field

[0001] This invention relates to the field of four-way pipe welding technology, and in particular to a pipe welding machine for four-way pipe production. Background Technology

[0002] A four-way pipe is a pipe fitting used to connect four pipes. It is usually in the shape of a cross and consists of a vertical main pipe and multiple horizontal branch pipes. It can realize the diversion, merging or reversal of liquid, gas and other media. In manufacturing, four-way pipes are usually processed by high-efficiency metal cutting and welding equipment such as automatic or semi-automatic electric arc welding and plasma arc welding to ensure the quality of weld and structural strength, and meet the requirements of modern industry for pressure resistance and sealing.

[0003] In the welding production of four-way pipes, the insertion and positioning between the branch pipe and the main pipe is a crucial preliminary step to ensure weld accuracy and structural strength. Currently, the insertion of horizontal branch pipes into the vertical main pipe is typically done manually or via a unilateral insertion method. This method suffers from low efficiency, inconsistent positioning, and difficulty in manual alignment. Especially when the insertion force is high, the two ends of the branch pipe may exhibit varying insertion depths or angle deviations, leading to uneven welds, large joint gaps, and consequently affecting weld quality and overall sealing performance. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art where the insertion of horizontal branch pipes into vertical main pipes usually relies on manual operation or a single-sided insertion structure. This method has problems such as low efficiency, inconsistent positioning, and difficulty in manual alignment during the insertion process. Especially when the insertion force is large, the two ends of the branch pipe may have different insertion depths or insertion angle deviations, resulting in uneven welds, large joint gaps, and thus affecting the welding quality and overall sealing performance. Therefore, this invention proposes a welding pipe machine for the production of four-way pipes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A welding pipe machine for producing four-way pipes includes a workbench, a top seat, and a horizontal cylinder. The top seat is symmetrically fixedly arranged on the top of the workbench. Vertical cylinders are fixedly arranged at the bottom of the two top seats on the workbench. Stepped columns are fixedly arranged at the output end of the vertical cylinders. The stepped columns are used to temporarily store the vertical pipes of the four-way pipes.

[0007] The horizontal cylinder is used to store the horizontally symmetrical tubes of the four-way pipe. The outside of the horizontal cylinder is provided with a composite clamping assembly for expanding and fixing the horizontally symmetrical tubes and the vertical tubes of the four-way pipe.

[0008] A rod is fixedly installed at one end of the horizontal cylinder. The horizontal cylinder is rotatably installed on the side of the fixed plate. A docking insertion assembly is provided on the side of the fixed plate. The docking insertion assembly drives two four-way horizontal symmetrical pipes fixed on the outer wall of the horizontal cylinder to dock and insert into the welding position of the four-way vertical pipe.

[0009] The workbench is provided with a welding head path planning component on the side opposite to the symmetrical insertion component. The welding head path planning component drives the welding head to move laterally within a certain distance range in the horizontal direction.

[0010] The workbench is equipped with a synchronous drive component below the fixed plate. The synchronous drive component drives the four-way vertical pipe and the horizontal symmetrical pipe integrated structure to rotate, causing the joint of the vertical pipe and the horizontal symmetrical pipe to continuously pass through the horizontal path of the welding head.

[0011] Optionally, the composite clamping assembly includes a four-way pipe vertical tube expansion assembly, a range extender assembly, and a four-way pipe horizontal symmetrical tube expansion assembly. The four-way pipe horizontal symmetrical tube expansion assembly includes an annular magnet, a drive rod, an electromagnet, and an expansion arc rod. The electromagnet is fixedly mounted on the side of the fixed plate. An annular magnet is movably inserted into the outer wall of the horizontal cylinder. A drive rod is rotatably mounted on the other end of the annular magnet.

[0012] Optionally, the four-way vertical pipe expansion assembly includes a retaining arc rod, a right-angle rod, a horizontal rod, a drive sleeve, and a wireless electric push rod. The right-angle rod is fixedly provided on the inner side of the retaining arc rod, and a first guide post is fixedly provided at the bottom of the right-angle rod. A transverse groove is opened on the side of the horizontal rod, and the first guide post is movably inserted into the transverse groove.

[0013] Optionally, the outer wall of the horizontal cylinder is provided with a horizontal groove, a wireless electric push rod is fixedly installed inside the horizontal groove, a drive sleeve is fixedly installed at the output end of the wireless electric push rod, the drive sleeve is sleeved on the outer wall of the horizontal cylinder, and the bottom end of the right-angle rod extends into the annular groove of the outer wall of the drive sleeve.

[0014] Optionally, the range extender includes a drive gear, a driven gear, and an output gear frame. The drive gear and driven gear are rotatably mounted on the side of the mounting box. An instant lubrication component is provided on the side of the mounting box to supply grease to the meshing points of the drive gear and driven gear. The instant lubrication component includes a mounting block, an oil storage tank, a release column, and a connecting rod. The mounting block is fixedly mounted on the side of the mounting box, and an oil storage tank is fixedly mounted on the mounting block. An oil outlet pipe is fixedly connected to the side of the oil storage tank. An elastic column is fixedly mounted on the top of the release column, and the elastic column is fixedly mounted on the bottom of the oil storage tank. A connecting rod is fixedly mounted on the side of the release column, and the connecting rod extends into the oil outlet pipe. A vertical hole is opened on the side of the connecting rod.

[0015] The driving gear and the driven gear are stably meshed. The diameter of the driving gear is smaller than that of the driven gear. One side of the driving gear is stably meshed with the input gear frame. The driven gear is stably meshed with the output gear frame. The top of the side of the output gear frame is fixedly connected to one end of a horizontal rod. A second guide post is movably inserted into the side of the output gear frame. The second guide post is movably inserted into the side of the mounting box.

[0016] Optionally, the docking insertion assembly includes a rear vertical plate, an extension rod, and a bidirectional screw. The rear vertical plate is fixedly installed at the top edge of the workbench. A transverse groove is provided on the side of the rear vertical plate. A docking motor is fixedly installed on the side of the rear vertical plate. A bidirectional screw is fixedly installed at the output end of the docking motor. An extension rod is symmetrically threaded into the outer wall of the bidirectional screw.

[0017] Optionally, the extension rod extends into the transverse groove, and the other end of the extension rod is fixedly mounted on the side of the fixed plate. A trigger block is fixedly mounted on the side of one of the extension rods, and a photoelectric switch is fixedly mounted at the middle position of the side of the rear vertical plate.

[0018] Optionally, the welding head path planning component includes a front vertical plate, a servo motor, a servo screw, and a transverse rod. The front vertical plate is fixedly installed at the top edge of the worktable. A transverse groove is also provided on the side of the front vertical plate. A servo motor is fixedly installed at the edge of the side of the front vertical plate. A servo screw is fixedly installed at the output end of the servo motor. A transverse rod is threaded into the outer wall of the servo screw. The transverse rod extends into the transverse groove. A mounting base is fixedly installed at the other end of the transverse rod.

[0019] Optionally, the synchronous drive assembly includes a common shaft, a drive pulley, a transmission belt, and a driven pulley. The driven pulley is rotatably connected to the side of the top seat, and a rod is movably inserted into the side of the driven pulley. A bottom plate is fixedly installed at the bottom of the worktable, and bottom seats are symmetrically fixedly installed at the top of the bottom plate.

[0020] Optionally, the two bottom seats are rotatably connected by a common shaft, and a drive pulley is symmetrically fixed on the outer wall of the common shaft. The drive pulley and the driven pulley are fitted with the same transmission belt on their outer walls. One end of the common shaft is fixedly connected to the output end of a common motor. The common motor is fixedly mounted on the side of the bottom seat. The worktable has an avoidance groove on the bottom side of the top seat.

[0021] Optionally, the other end of the drive rod is rotatably connected to the side of the input gear frame, and a third guide post is movably inserted into the side of the input gear frame in the vertical direction, with the other end of the third guide post fixedly disposed on the side of the mounting box.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. The main structure of this invention includes stepped columns and horizontal cylinders. The stepped columns are used to temporarily buffer the vertical main pipe, while the horizontal cylinders are equipped with composite expansion components. The composite expansion components can fit and fix the horizontal branch pipes on the outer wall of the horizontal cylinders. The two horizontal cylinders are equipped with docking insertion components at one end. The docking insertion components can drive the two horizontal cylinders to dock and insert into the two sides of the vertical main pipe at the same time, avoiding problems such as angle deviation and inconsistent insertion depth caused by traditional manual insertion. This not only improves the assembly efficiency of the branch pipes and main pipes, but also ensures the assembly accuracy, providing a reliable premise for subsequent automatic welding, and significantly enhancing production consistency and automation level.

[0024] 2. The composite expansion and support assembly of this invention includes a vertical pipe expansion and support assembly for the four-way pipe, a range extender assembly, and a horizontal symmetrical pipe expansion and support assembly for the four-way pipe. After the docking insertion assembly drives the two horizontal cylinders to be docked and inserted into both sides of the vertical main pipe, the composite expansion and support assembly first expands and fixes the horizontal branch pipes, and then expands and fixes the vertical pipe of the four-way pipe, fixing and limiting one vertical pipe and two horizontal branch pipes into an integrated structure. This facilitates the synchronous drive assembly set on both sides of the two horizontal cylinders to drive the integrated structure to rotate continuously. The saddle-shaped weld formed by the joint of the vertical pipe and the two horizontal branch pipes continuously crosses the horizontal displacement path of the welding head set on one side of the workbench, eliminating the complicated operation of manually moving the welding gun along the opposite side of the saddle-shaped weld in the traditional method. Compared with manual welding, which requires constant adjustment of posture, viewing angle and welding angle to match the weld curve trajectory, this invention can realize automatic rotation and positioning of the weld opposite side, significantly reducing human error, weld defects and labor intensity, improving welding consistency and efficiency, and adapting to the automation needs of complex curved surface welding.

[0025] 3. The four-way pipe vertical pipe expansion component, range extender component, and four-way pipe horizontal symmetrical pipe expansion component of the present invention, when the expansion arc rod in the four-way pipe horizontal symmetrical pipe expansion component expands and fixes the inside of the horizontal cylinder, the range extender component will amplify the small displacement of the expansion arc rod in the four-way pipe horizontal symmetrical pipe expansion component into the large displacement of the holding arc rod in the four-way pipe vertical pipe expansion component, driving the holding arc rod to move as far as possible to both ends of the four-way pipe vertical pipe, and then expand and fix the four-way pipe vertical pipe. This can effectively prevent the main pipe from axial shaking and swaying deformation under uneven force or insertion force, and avoid the problem of eccentricity and axis offset at both ends of the main pipe caused by expansion only at the center line position. The expansion at both ends provides a support method similar to three-point clamping, which effectively improves the ability to maintain the straightness of the main pipe axis. Finally, the expansion at both ends is equivalent to setting a double fulcrum rotation center, which greatly improves the rotational stability of the welded structure and avoids the weld trajectory offset caused by conical shaking, thereby ensuring welding quality and product consistency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 for Figure 1 Another perspective structural diagram.

[0028] Figure 3 for Figure 1 A schematic diagram of the structure viewed from below.

[0029] Figure 4 for Figure 3 Another perspective structural diagram.

[0030] Figure 5 for Figure 1 A schematic diagram of the structure for removing the workpiece.

[0031] Figure 6 for Figure 5 A schematic diagram of the structure after removing the front and rear vertical plates.

[0032] Figure 7 This is a structural diagram of the synchronous drive component and its connector.

[0033] Figure 8 This is a structural diagram of the drive sleeve and its connecting parts.

[0034] Figure 9 This is a structural diagram of the horizontal cylinder and its connecting parts.

[0035] Figure 10 This is a schematic diagram of the composite clamping assembly.

[0036] Figure 11 A schematic diagram of the structure for removing the ring magnet from the composite clamping assembly.

[0037] Figure 12 This is a schematic diagram of the instant lubrication assembly.

[0038] Figure 13 This is a structural diagram of the connecting rod and its connecting component.

[0039] In the diagram: 1. Bidirectional screw; 2. Rear vertical plate; 3. Worktable; 4. Bottom plate; 5. Extension rod; 6. Trigger block; 7. Photoelectric switch; 8. Horizontal sliding slot; 9. Plug-in motor; 10. Fixed plate; 11. Servo motor; 12. Front vertical plate; 13. Servo screw; 14. Mounting base; 15. Horizontal sliding rod; 16. Top seat; 161. Driven wheel; 17. Clearance slot; 18. Common shaft; 19. Bottom seat; 20. Common motor; 21. Vertical cylinder; 210. Stepped column; 22. Electromagnet; 23. Drive belt; 24. Drive pulley; 25. Drive sleeve; 26. Wireless electric push rod; 2 7. Horizontal cylinder; 271. Horizontal groove; 272. Straight rod; 28. Mounting box; 29. ​​Ring magnet; 291. Drive rod; 30. Supporting arc rod; 31. Right angle rod; 310. First guide post; 32. Horizontal rod; 320. Transverse groove; 33. Output gear frame; 34. Second guide post; 35. Driven gear; 36. Drive gear; 37. Input gear frame; 38. Third guide post; 39. Expanding arc rod; 40. Oil storage tank; 41. Top cover; 410. Vent hole; 42. Mounting block; 43. Oil outlet pipe; 44. Release post; 440. Elastic post; 45. Connecting bent rod; 451. Vertical hole. Detailed Implementation

[0040] 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.

[0041] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Reference Figure 1-13 A welding machine for producing four-way pipes includes a workbench 3, a top seat 16, and a horizontal cylinder 27. The top seat 16 is symmetrically fixed on the top of the workbench 3. Vertical cylinders 21 are fixedly installed at the bottom of the two top seats 16 on the workbench 3. A stepped column 210 is fixedly installed at the output end of the vertical cylinder 21. The stepped column 210 is used to temporarily store the vertical pipe of the four-way pipe.

[0043] Horizontal cylinder 27 is used to store the horizontal symmetrical tubes of the four-way pipe. A composite clamping assembly is installed on the outside of horizontal cylinder 27 to expand and fix the horizontal symmetrical tubes and the vertical tubes of the four-way pipe. The composite clamping assembly includes a vertical tube expansion assembly, a range extender assembly, and a horizontal symmetrical tube expansion assembly. The horizontal symmetrical tube expansion assembly includes a ring magnet 29, a drive rod 291, an electromagnet 22, and an expansion arc rod 39. The electromagnet 22 is fixedly mounted on the side of the fixed plate 10. The outer wall of horizontal cylinder 27 is movable. A ring magnet 29 is inserted, and a drive rod 291 is rotatably provided at the other end of the ring magnet 29. The electromagnet 22 is a ring electromagnet in the prior art, and the magnetic poles of the ring magnet 29 near the side of the electromagnet 22 need to be set appropriately. When the electromagnet 22 is energized, it will repel the ring magnet 29. The four-way pipe vertical pipe expansion assembly includes a supporting arc rod 30, a right angle rod 31, a horizontal rod 32, a drive sleeve 25, and a wireless electric push rod 26. The right angle rod 31 is fixedly provided on the inner side of the supporting arc rod 30.

[0044] A first guide post 310 is fixedly installed at the bottom of the right-angle rod 31. A transverse groove 320 is opened on the side of the horizontal rod 32. The first guide post 310 is movably inserted into the transverse groove 320. A horizontal groove 271 is opened on the outer wall of the horizontal cylinder 27. A wireless electric push rod 26 is fixedly installed inside the horizontal groove 271. A drive sleeve 25 is fixedly installed at the output end of the wireless electric push rod 26. The drive sleeve 25 is sleeved on the outer wall of the horizontal cylinder 27. The bottom end of the right-angle rod 31 extends into the annular groove on the outer wall of the drive sleeve 25.

[0045] The range extender assembly includes a drive gear 36, a driven gear 35, and an output gear frame 33. Both the drive gear 36 and the driven gear 35 are rotatably mounted on the side of the mounting box 28. The drive gear 36 and the driven gear 35 are stably meshed. An instant lubrication assembly is provided on the side of the mounting box 28 to supply grease to the meshing point of the drive gear 36 and the driven gear 35. The instant lubrication assembly includes a mounting block 42, an oil storage tank 40, a release column 44, and a connecting bent rod 45. The mounting block 42 is fixedly mounted on the side of the mounting box 28, and the oil storage tank 40 is fixedly mounted on the mounting block 42. In order to facilitate timely replenishment of oil into the oil storage tank 40, a top cover 41 is screwed into the top of the oil storage tank 40. A vent hole 410 is opened at the top of the top cover 41 to ensure the air pressure difference inside and outside the oil storage tank 40 when the oil is released.

[0046] An oil outlet pipe 43 is fixedly connected to the side of the oil storage tank 40. The oil outlet pipe 43 includes a horizontal section and a vertical section. The vertical section of the oil outlet pipe 43 is suspended at the meshing point of the driving gear 36 and the driven gear 35. An elastic column 440 is fixedly installed on the top of the release column 44. The elastic column 440 is fixedly installed at the bottom of the oil storage tank 40. A connecting bent rod 45 is fixedly installed on the side of the release column 44. The connecting bent rod 45 extends into the oil outlet pipe 43. A vertical hole 451 is opened on the side of the connecting bent rod 45. Each time the output gear frame 33 moves upward, the vertical hole 451 of the connecting bent rod 45 will be driven by the release column 44 to enter the oil outlet pipe 43. At this time, the oil outlet pipe 43 is connected to the oil storage tank 40.

[0047] In fact, the diameter of the vertical hole 451 is much smaller than the inner diameter of the oil outlet pipe 43. When the connecting rod 45 moves a certain distance in the vertical direction, the vertical hole 451 is always inside the oil outlet pipe 43. The oil outlet pipe 43 and the oil storage tank 40 will be connected for a period of time. The oil storage tank 40 releases a certain amount of oil. When the connecting rod 45 moves to the limit position, the oil outlet pipe 43 is cut off by the connecting rod 45.

[0048] The diameter of the driving gear 36 is smaller than that of the driven gear 35. One side of the driving gear 36 is stably meshed with the input gear frame 37, and the driven gear 35 is stably meshed with the output gear frame 33. The top of the side of the output gear frame 33 is fixedly connected to one end of the horizontal rod 32. A second guide post 34 is movably inserted into the side of the output gear frame 33. The second guide post 34 is movably inserted into the side of the mounting box 28.

[0049] The other end of the drive rod 291 is rotatably connected to the side of the input gear frame 37. A third guide post 38 is vertically inserted into the side of the input gear frame 37. The other end of the third guide post 38 is fixedly mounted on the side of the mounting box 28. Since the input gear frame 37 and the output gear frame 33 are arranged opposite each other, refer to... Figure 10 Since the diameter of the driving gear 36 is smaller than that of the driven gear 35, when the output gear frame 33 moves up a small displacement, the driving gear 36 and the driven gear 35 amplify the small displacement and transmit it to the output gear frame 33.

[0050] A horizontal cylinder 27 is fixedly mounted on one end with a straight rod 272. The horizontal cylinder 27 is rotatably mounted on the side of the fixed plate 10. A docking insertion assembly is provided on the side of the fixed plate 10. The docking insertion assembly drives two four-way pipes fixed on the outer wall of the horizontal cylinder 27 to dock and insert into the vertical pipe welding position of the four-way pipe. The docking insertion assembly includes a rear vertical plate 2, an extension rod 5, and a bidirectional screw 1. The rear vertical plate 2 is fixedly mounted on the top edge of the workbench 3. A transverse groove 8 is opened on the side of the rear vertical plate 2. A docking motor 9 is fixedly mounted on the side of the rear vertical plate 2. A bidirectional screw 1 is fixedly mounted on the output end of the docking motor 9. An extension rod 5 is symmetrically screwed into the outer wall of the bidirectional screw 1. The extension rod 5 extends into the transverse groove 8. The other end of the extension rod 5 is fixedly mounted on the side of the fixed plate 10. A trigger block 6 is fixedly mounted on the side of one of the extension rods 5. A photoelectric switch 7 is fixedly mounted in the middle of the side of the rear vertical plate 2. The slot of the trigger block 6 and the photoelectric switch 7 are at the same horizontal height.

[0051] The workbench 3 has a welding head path planning component on the side opposite to the symmetrical insertion component. The welding head path planning component drives the welding head to move horizontally within a certain distance. The welding head path planning component includes a front vertical plate 12, a servo motor 11, a servo screw 13, and a horizontal moving rod 15. The front vertical plate 12 is fixedly set at the top edge of the workbench 3. The side of the front vertical plate 12 is also provided with a horizontal moving groove 8. The servo motor 11 is fixedly set at the side edge of the front vertical plate 12. The output end of the servo motor 11 is fixedly set with a servo screw 13. The horizontal moving rod 15 is screwed into the outer wall of the servo screw 13. The horizontal moving rod 15 extends into the horizontal moving groove 8. The other end of the horizontal moving rod 15 is fixedly set with a mounting base 14. The mounting base 14 is used to install the welding head of the pipe welding machine. It is programmed by the controller of the servo motor 11 to drive the servo motor 11 to rotate intermittently in both directions, thereby driving the welding head at one end of the horizontal moving rod 15 to move along the saddle-shaped weld seam between the vertical main pipe and the horizontal branch pipe.

[0052] The workbench 3 is equipped with a synchronous drive assembly below the fixed plate 10. The synchronous drive assembly drives the integrated structure of the vertical pipe and the horizontal symmetrical pipe of the four-way pipe to rotate, causing the joint of the vertical pipe and the horizontal symmetrical pipe to continuously pass through the horizontal path of the welding head. The synchronous drive assembly includes a common shaft 18, a drive pulley 24, a transmission belt 23, and a driven pulley 161. The driven pulley 161 is rotatably connected to the side of the top seat 16, and a straight rod 272 is movably inserted into the side of the driven pulley 161. A bottom plate 4 is fixedly installed at the bottom of the workbench 3, and bottom seats 19 are symmetrically fixedly installed at the top of the bottom plate 4. The two bottom seats 19 are rotatably connected to the common shaft 18. 8. A drive pulley 24 is symmetrically fixed on the outer wall of the common shaft 18. The drive pulley 24 and the driven pulley 161 are fitted with the same transmission belt 23 on their outer walls. One end of the common shaft 18 is fixedly connected to the output end of the common motor 20. The common motor 20 is fixedly installed on the side of the bottom seat 19. The worktable 3 has a clearance groove 17 on the bottom side of the top seat 16. The transmission belt 23 passes through the clearance groove 17. The setting of the straight rod 272 allows the two horizontal cylinders 27 to rotate through the common motor 20, the common shaft 18 and other structures when the docking insertion assembly drives the two horizontal cylinders 27 to move closer or further apart.

[0053] The specific implementation steps and principles of this invention are as follows:

[0054] It should be added that the initial position of the output shaft of the common motor 20 needs to be set appropriately (the encoder built into the common motor 20 can be used to set and control the initial position of the output shaft). When the common motor 20 is in standby mode, the two supporting arc rods 30 are in a vertical state.

[0055] Temporary buffers for vertical main pipes and horizontal branches

[0056] In the initial state, the two extension rods 5 are at their farthest distance, the two horizontal cylinders 27 are at their farthest distance, the ring magnet 29 is pushed by hand to the closest distance to the electromagnet 22, the two expanding arc rods 39 and the holding arc rod 30 are at their closest distance, the wireless electric push rod 26 is in the extended state, at this time the drive sleeve 25 drives the first guide post 310 away from the extreme position of the output tooth frame 33 through the right angle rod 31, the vertical main pipe is sleeved on the top of the stepped column 210, the two horizontal branch pipes are sleeved on the outer wall of the horizontal cylinder 27 until one end of the horizontal branch pipe abuts against the side of the fixed plate 10, the plug-in motor 9 is started, the plug-in motor 9 drives the two fixed plates 10 to move closer to each other through the bidirectional screw 1, and drives the two horizontal branch pipes to fit against the preset welding position on the outer wall of the vertical main pipe, at this time the holding arc rod 30 and its connecting piece enter the inner cavity of the vertical column tube.

[0057] Positioning of vertical main pipes and horizontal branch pipes

[0058] When the two extension rods 5 approach each other, the trigger block 6 is inserted into the photoelectric switch 7. The vertical cylinder 21 drives the stepped column 210 to move down to the limit position that does not obstruct the rotation of the vertical main pipe. At this time, the electromagnet 21 and the wireless electric push rod 26 retract. The electromagnet 21 drives the two expansion arc rods 39 to expand the inner wall of the horizontal branch pipe by repelling the ring magnet 29 and using the drive rod 291 and the input gear frame 37. At the same time, the input gear frame 37 drives the two abutting arc rods 30 to move towards both ends of the inner cavity of the vertical main pipe through the drive gear 36, driven gear 35 and output gear frame 33. At the same time, the wireless electric push rod 26 drives the abutting arc rod 30 at the top of the right angle rod 31 to abut against the inner wall of the vertical main pipe through the drive sleeve 25.

[0059] Finally, the common motor 20 is started. The common motor 20 drives the two horizontal cylinders 19 to rotate through the common shaft 18, the driving pulley 24, the transmission belt and the driven wheel 161, thereby driving the three-tube integrated structure to rotate. The servo motor 11 intermittently reverses forward and backward through a preset program, driving the welding head fixed at the end of the horizontal moving rod 15 to move along the horizontal path, so that the welding head moves along the outer periphery of the weld seam to weld the saddle-shaped weld seam.

[0060] 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 welding machine for producing four-way pipes, comprising a worktable, a top seat, and a horizontal cylinder, characterized in that, The workbench is symmetrically fixed with top seats on the top, and vertical cylinders are fixedly installed at the bottom of the two top seats. Stepped columns are fixedly installed at the output end of the vertical cylinders. The stepped columns are used to temporarily store the vertical pipes of the four-way pipe. A horizontal cylinder is used to store the horizontal symmetrical tubes of a four-way pipe. The outside of the horizontal cylinder is provided with a composite clamping assembly for expanding and fixing the horizontal symmetrical tubes and the vertical tubes of the four-way pipe. The composite clamping assembly includes a vertical tube expansion assembly, a range extension assembly, and a horizontal symmetrical tube expansion assembly. The horizontal symmetrical tube expansion assembly includes a ring magnet, a drive rod, an electromagnet, and an expansion arc rod. The electromagnet is fixedly installed on the side of the fixed plate. A ring magnet is movably inserted into the outer wall of the horizontal cylinder. A drive rod is rotatably installed at the other end of the ring magnet. A rod is fixedly installed at one end of the horizontal cylinder. The horizontal cylinder is rotatably installed on the side of the fixed plate. A docking insertion assembly is provided on the side of the fixed plate. The docking insertion assembly drives two four-way horizontal symmetrical pipes fixed on the outer wall of the horizontal cylinder to dock and insert into the welding position of the four-way vertical pipe. The workbench is provided with a welding head path planning component on the side opposite to the symmetrical insertion component. The welding head path planning component drives the welding head to move laterally within a certain distance range in the horizontal direction. The workbench is equipped with a synchronous drive component below the fixed plate. The synchronous drive component drives the integrated structure of the four-way vertical pipe and the horizontal symmetrical pipe to rotate, causing the joint of the vertical pipe and the horizontal symmetrical pipe to continuously pass through the horizontal path of the welding head. The range extender includes a drive gear, a driven gear, and an output gear frame. The drive gear and driven gear are rotatably mounted on the side of the mounting box. An instant lubrication component is provided on the side of the mounting box to supply grease to the meshing points of the drive gear and driven gear. The instant lubrication component includes a mounting block, an oil storage tank, a release column, and a connecting rod. The mounting block is fixedly mounted on the side of the mounting box, and an oil storage tank is fixedly mounted on the mounting block. An oil outlet pipe is fixedly connected to the side of the oil storage tank. An elastic column is fixedly mounted on the top of the release column, and the elastic column is fixedly mounted on the bottom of the oil storage tank. A connecting rod is fixedly mounted on the side of the release column, and the connecting rod extends into the oil outlet pipe. A vertical hole is opened on the side of the connecting rod. The driving gear and the driven gear are stably meshed. The diameter of the driving gear is smaller than that of the driven gear. One side of the driving gear is stably meshed with the input gear frame. The driven gear is stably meshed with the output gear frame. The top of the side of the output gear frame is fixedly connected to one end of a horizontal rod. A second guide post is movably inserted into the side of the output gear frame. The second guide post is movably inserted into the side of the mounting box. The docking insertion assembly includes a rear vertical plate, an extension rod, and a bidirectional screw. The rear vertical plate is fixedly installed at the top edge of the workbench. A transverse groove is opened on the side of the rear vertical plate. A docking motor is fixedly installed on the side of the rear vertical plate. A bidirectional screw is fixedly installed at the output end of the docking motor. An extension rod is symmetrically threaded into the outer wall of the bidirectional screw. The extension rod extends into the transverse groove, and the other end of the extension rod is fixedly mounted on the side of the fixed plate. A trigger block is fixedly mounted on the side of one of the extension rods, and a photoelectric switch is fixedly mounted in the middle of the side of the rear vertical plate.

2. The welding machine for producing four-way pipes according to claim 1, characterized in that, The four-way vertical pipe expansion assembly includes a supporting arc rod, a right-angle rod, a horizontal rod, a drive sleeve, and a wireless electric push rod. A right-angle rod is fixedly installed on the inner side of the supporting arc rod, and a first guide post is fixedly installed at the bottom of the right-angle rod. A transverse groove is opened on the side of the horizontal rod, and the first guide post is movably inserted into the transverse groove.

3. The welding machine for producing four-way pipes according to claim 2, characterized in that, A horizontal groove is provided on the outer wall of the horizontal cylinder. A wireless electric push rod is fixedly installed inside the horizontal groove. A drive sleeve is fixedly installed at the output end of the wireless electric push rod. The drive sleeve is sleeved on the outer wall of the horizontal cylinder. The bottom end of the right-angle rod extends into the annular groove on the outer wall of the drive sleeve.

4. The welding machine for producing four-way pipes according to claim 1, characterized in that, The welding head path planning component includes a front vertical plate, a servo motor, a servo screw, and a transverse guide rod. The front vertical plate is fixedly installed at the top edge of the worktable. A transverse guide groove is also provided on the side of the front vertical plate. A servo motor is fixedly installed at the edge of the side of the front vertical plate. A servo screw is fixedly installed at the output end of the servo motor. A transverse guide rod is screwed into the outer wall of the servo screw. The transverse guide rod extends into the transverse guide groove. A mounting base is fixedly installed at the other end of the transverse guide rod.

5. A welding machine for producing four-way pipes according to claim 1, characterized in that, The synchronous drive assembly includes a common shaft, a drive pulley, a transmission belt, and a driven pulley. The driven pulley is rotatably connected to the side of the top seat, and a rod is movably inserted into the side of the driven pulley. A bottom plate is fixedly installed at the bottom of the worktable, and bottom seats are symmetrically fixedly installed at the top of the bottom plate.

6. A welding machine for producing four-way pipes according to claim 5, characterized in that, The two bottom seats are rotatably connected by a common shaft. A drive pulley is symmetrically fixed on the outer wall of the common shaft. The drive pulley and the driven pulley are fitted with the same transmission belt on their outer walls. One end of the common shaft is fixedly connected to the output end of a common motor. The common motor is fixedly mounted on the side of the bottom seat. The worktable has a clearance groove on the bottom side of the top seat.

7. A welding machine for producing four-way pipes according to claim 3, characterized in that, The other end of the drive rod is rotatably connected to the side of the input gear frame, and a third guide post is movably inserted into the side of the input gear frame in the vertical direction. The other end of the third guide post is fixedly set on the side of the mounting box.

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