Spiral steel pipe forming machine and forming method thereof

Abstract

The invention relates to the technical field of welding machining, and particularly discloses a spiral steel pipe forming machine and a forming method.The spiral steel pipe forming machine comprises a bottom plate, supporting frames are fixedly connected to the left side and the right side of the upper end of the bottom plate, first shells are fixedly connected to the left side and the right side of the upper end of each supporting frame, and supporting rings are fixedly connected to the inner arc surfaces of the first shells; the supporting ring is internally provided with a plurality of adjusting assemblies and a plurality of extrusion rollers, the adjusting assemblies and the extrusion rollers are in one-to-one correspondence, and the supporting ring is connected with the extrusion rollers through the adjusting assemblies; and a power mechanism is arranged at the side end of the first shell and used for providing power for the adjusting assembly, spiral steel pipes with different diameters can be conveniently wrapped and clamped, and the practicability of the device can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding processing, and particularly relates to a spiral steel pipe forming machine and a forming method thereof. Background Art

[0002] Spiral steel pipes are spiral seam steel pipes made of strip steel coils, formed by cold extrusion at normal temperature and welded by automatic submerged arc welding process. Using the submerged arc welding process, welding can be achieved at the optimal position, and defects such as edge misalignment, welding deviation, and incomplete penetration are not likely to occur, and the welding quality is high. Submerged arc welded spiral steel pipes are a type of steel pipe produced by a special welded pipe unit. The production process includes feeding the strip steel into the welded pipe unit, rolling it through multiple rolling mills, gradually rolling up the strip steel to form a spiral circular pipe, and then using a submerged arc welding machine to weld the spiral seam to form a spiral steel pipe.

[0003] The technical problem to be solved by this application is: When the current spiral steel pipe forming machine extrudes the rolled spiral circular pipe, multiple extrusion rollers are used to extrude the spiral circular pipe, which is beneficial to aligning the weld of the spiral circular pipe. Due to the setting of multiple extrusion rollers, when extruding spiral circular pipes with different diameters, each extrusion roller needs to be adjusted one by one to facilitate the extrusion of spiral circular pipes with different diameters. Although the purpose of extruding the spiral circular pipe is achieved in this way, the operation process is relatively troublesome, thus affecting subsequent use. Therefore, a spiral steel pipe forming machine needs to be designed. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a spiral steel pipe forming machine and a forming method thereof.

[0005] The technical solution adopted by the present invention is as follows: A spiral steel pipe forming machine includes a bottom plate. On the upper ends of the left and right sides of the bottom plate, support frames are fixedly connected. On the upper ends of the left and right sides of the support frames, first shells are fixedly connected. On the inner arc surface of the first shell, a support ring is fixedly connected. Inside the support ring, an adjustment assembly and extrusion rollers are arranged. There are multiple adjustment assemblies and extrusion rollers, and they are in one-to-one correspondence. The support ring is connected to the extrusion rollers through the adjustment assembly;

[0006] A power mechanism is arranged on the side end of the first shell, and the power mechanism is used to provide power for the adjustment assembly;

[0007] An extrusion mechanism is arranged between the two first shells, and the extrusion mechanism makes the extrusion rollers closely contact the spiral steel pipe by extruding the adjustment assembly;

[0008] A lifting mechanism is provided at the rear side of the upper end of the bottom plate. A moving mechanism and a rotating mechanism are provided at the front end of the lifting mechanism. The lifting mechanism is connected to the rotating mechanism through the moving mechanism. A flux hopper is provided at the lower end of the rotating mechanism. A fixing plate is fixedly connected to the circumferential surface of the lower end of the flux hopper. A flux gun head is fixedly connected to the lower end of the flux hopper. Pressing assemblies are provided on both the front and rear sides of the lower end of the fixing plate. An electrode head is fixedly connected to the lower left end of the fixing plate. A wire conduit is fixedly connected to the inside of the lower right side of the fixing plate. The lower end of the wire conduit is communicated with the flux gun head.

[0009] Furthermore, the adjusting assembly includes a rotating cylinder, a transmission gear, a moving cylinder, a threaded rod, a second spring, a second frame, an auxiliary roller and a third frame. Rotating cylinders are rotatably connected to both sides inside the support ring. Moving cylinders are slidably connected inside both of the rotating cylinders. The end surface of the moving cylinder is hexagonal. Threaded rods are threadedly connected inside both of the moving cylinders. The external threads of the two threaded rods have opposite directions. A second frame is fixedly connected to one end of the threaded rod close to the first housing. An auxiliary roller is rotatably connected inside the second frame. A second spring is arranged on the circumferential surface of the threaded rod. One end of the second spring is fixedly connected to the second frame, and the other end of the second spring is fixedly connected to the support ring. One end of the moving cylinder extending out of the support ring is rotatably connected to a third frame. The third frame is rotatably connected to the pressing roller.

[0010] Furthermore, the power mechanism includes a first motor, a bearing seat, a rotating shaft, a first bevel gear, a first annular bevel gear, a first rotating ring, a second annular bevel gear and a second bevel gear. A first motor and a bearing seat are fixedly connected to the side end of the first housing. A rotating shaft is rotatably connected inside the bearing seat. The output end of the first motor is fixedly connected to the rotating shaft, and the output end of the first motor is fixedly connected to a first bevel gear. A first rotating ring is rotatably connected inside the support ring. A first annular bevel gear is fixedly connected to the outside of the first rotating ring. The first annular bevel gear meshes with the first bevel gear. A second annular bevel gear is fixedly connected to the inside of the first rotating ring. A second bevel gear is fixedly connected to the circumferential surface of the rotating cylinder close to the first rotating ring. The second bevel gear meshes with the second annular bevel gear.

[0011] Further, the extrusion mechanism includes a second housing, a second motor, a transmission shaft, a worm, a worm gear, a second rotating ring, and a wedge block. The upper end of the first housing is fixedly connected to the second housing. The transmission shaft is rotatably connected inside the second housing. A worm is fixedly connected to the circumferential surface of the transmission shaft. The front end of the second housing is fixedly connected to the second motor, and the output end of the second motor is fixedly connected to the transmission shaft. A second rotating ring is rotatably connected between the two second housings. A worm gear is fixedly connected to the outer arc surface of the second rotating ring, and the worm gear meshes with the worm. A wedge block is fixedly connected to the inner arc surface of the second rotating ring. There are multiple wedge blocks, and they correspond to the extrusion rollers one by one.

[0012] Further, the lifting mechanism includes a support column, a third motor, a lead screw, and a moving seat. The rear side of the upper end of the bottom plate is fixedly connected to the support column. The lead screw is rotatably connected inside the support column. The moving seat is threadedly connected to the circumferential surface of the lead screw. The moving seat is slidably connected to the support column. The upper end of the support column is fixedly connected to the third motor, and the output end of the third motor is fixedly connected to the lead screw.

[0013] Further, sliding rails are fixedly connected to both sides of the support column, and the moving seat is slidably connected to the sliding rails.

[0014] Further, the moving mechanism includes an electric sliding rail and an electric slider. The electric sliding rail is fixedly connected to the front end of the moving seat, and the electric slider is slidably connected to the electric sliding rail.

[0015] Further, the rotating mechanism includes a fourth motor, a mounting frame, and a fixing frame. The mounting frame is fixedly connected to the front end of the electric slider. The fourth motor is fixedly connected to the upper end of the mounting frame. The output end of the fourth motor penetrates the mounting frame and is rotatably connected to the mounting frame. The output end of the fourth motor is fixedly connected to the fixing frame, and the fixing frame is fixedly connected to the flux bin.

[0016] Further, the rolling assembly includes a guide rod, a first spring, a first frame, and a rolling roller. The guide rod is slidably connected inside the fixing plate. The lower end of the guide rod is fixedly connected to the first frame, and the rolling roller is rotatably connected inside the first frame. A first spring is arranged on the circumferential surface of the guide rod. One end of the first spring is fixedly connected to the fixing plate, and the other end of the first spring is fixedly connected to the first frame.

[0017] A forming method of a spiral steel pipe forming machine using the above-mentioned spiral steel pipe forming machine specifically includes the following steps:

[0018] S1: First, adjust the position of the extrusion roller according to the diameter of the spiral steel pipe. During adjustment, use the power mechanism to provide power to the adjustment component, and with the cooperation of the adjustment component, the adjustment of the position of the extrusion roller is achieved.

[0019] S2: After adjusting the position of the extrusion roller, one end of the spiral steel pipe to be welded and formed is passed through between the two support rings. The extrusion mechanism drives the adjustment component to move, and then drives the extrusion roller to clamp the spiral steel pipe, so that the spiral steel pipe is horizontally supported on the two support rings;

[0020] S3: The lifting mechanism works downward, driving the flux gun head to descend. At the same time, with the cooperation of the moving mechanism, the flux gun head is also moved to the starting displacement end. By moving and adjusting the spiral steel pipe, one of the top intersection points where the vertical plane passing through the central axis on the spiral steel pipe intersects with the spiral seam is aligned with the flux gun head;

[0021] S4: Drive the spiral steel pipe to rotate uniformly by 360 degrees. While the spiral steel pipe is rotating, drive the flux gun head to move and weld uniformly through the moving mechanism. And when the spiral steel pipe stops rotating 360 degrees, the moving distance of the moving mechanism is the lead distance of the spiral seam of the spiral steel pipe;

[0022] S5: After completing the welding of a single lead distance through S4, the extrusion mechanism works in the reverse direction, so that the extrusion roller no longer extrudes the spiral steel pipe. Then push the spiral steel pipe to move a single lead distance, and drive the flux gun head to rotate 180 degrees through the rotating mechanism, drive the spiral steel pipe to rotate 360 degrees in the opposite direction relative to S3, and drive the flux gun head to move and weld uniformly through the moving mechanism to the starting position of the movement in S4;

[0023] S6: After completing the single-lead welding of the reverse rotation through S5, continue to push the spiral steel pipe to move a single lead distance, and repeat the welding process of S4 and S5 until the spiral steel pipe moves through the two support rings.

[0024] The beneficial effects of the present invention are as follows:

[0025] (1). By setting the power mechanism and the adjustment component, and using the power mechanism to provide power for the adjustment component, the position of the extrusion roller can be changed simultaneously at this time, so as to facilitate the clamping of spiral steel pipes with different diameters, which is beneficial to improving the practicability of the device. After adjusting the position of the extrusion roller, the extrusion mechanism works, which can drive the adjustment component to move, and then drive the extrusion roller to move, so that the extrusion roller is in close contact with the spiral steel pipe. In this way, the gap of the spiral weld can be reduced, and the stability of the weld gap control can be ensured during the rotary welding process of the spiral steel pipe, and the welding quality can be ensured and improved.

[0026] (2) By setting the guide rod, the first spring, the first frame and the rolling roller, when the moving seat moves downward, the rolling roller is also driven to move downward, so that the rolling roller contacts the spiral steel pipe. After the rolling roller contacts the spiral steel pipe, the rolling roller will be squeezed upward, and then the guide rod is driven to move upward under the cooperation of the first frame, thereby compressing the first spring. The compressed first spring is beneficial for the rolling roller to closely contact the spiral steel pipe. When the spiral steel pipe rotates, the weld can be rolled at this time, which is beneficial for the welds to be better welded together. At the same time, under the cooperation of the two rolling rollers, the sliding of the welding flux caused by the rotational deviation force can be effectively inhibited, thus avoiding the waste of the welding flux and improving the utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the whole invention from the first perspective;

[0028] Figure 2 is a schematic structural diagram of the whole invention from the second perspective;

[0029] Figure 3 is a schematic structural diagram of the whole invention from the third perspective;

[0030] Figure 4 is the present invention Figure 3 the enlarged view of part A in;

[0031] Figure 5 is a schematic structural diagram of the rear part of the present invention after the structure is sectioned;

[0032] Figure 6 is the present invention Figure 5 the enlarged view of part B in;

[0033] Figure 7 is a schematic structural diagram of the left side of the present invention after sectioning;

[0034] Figure 8 is the present invention Figure 7 the enlarged view of part C in;

[0035] Figure 9 is a schematic structural diagram of the present invention after the adjustment assembly is disassembled;

[0036] Figure 10 is a schematic structural diagram of the cooperation of the rotation mechanism, the welding material bin and the rolling assembly of the present invention.

[0037] In the figure: 1. Bottom plate; 2. Support frame; 3. First housing; 4. Support ring; 5. Power mechanism; 501. First motor; 502. Bearing seat; 503. Rotating shaft; 504. First bevel gear; 505. First annular bevel gear; 506. First rotating ring; 507. Second annular bevel gear; 508. Second bevel gear; 6. Extrusion roller; 7. Extrusion mechanism; 701. Second housing; 702. Second motor; 703. Transmission shaft; 704. Worm; 705. Worm gear; 706. Second rotating ring; 707. Wedge block; 8. Lifting mechanism; 801. Support column; 802. Third motor; 803. Lead screw; 804. Moving seat; 9. Moving mechanism; 901. Electric slide rail; 902. Electric slider; 10. Rotating mechanism; 1001. Fourth motor; 1002. Mounting frame; 1003. Fixed frame; 11. Flux bin; 12. Rolling assembly; 1201. Guide rod; 1202. First spring; 1203. First frame; 1204. Rolling roller; 13. Slide rail; 14. Adjusting assembly; 1401. Rotating cylinder; 1402. Transmission gear; 1403. Moving cylinder; 1404. Threaded rod; 1405. Second spring; 1406. Second frame; 1407. Auxiliary roller; 1408. Third frame; 15. Fixed plate; 16. Electrode head; 17. Flux gun head; 18. Welding wire conduit. Detailed implementation mode

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0039] Please refer to Figures 1 to 10 , the present invention provides a technical solution: a spiral steel pipe forming machine, including a bottom plate 1, support frames 2 are fixedly connected to both the left and right sides of the upper end of the bottom plate 1, first housings 3 are fixedly connected to both the left and right sides of the upper end of the support frames 2, a support ring 4 is fixedly connected to the inner arc surface of the first housing 3, an adjusting assembly 14 and an extrusion roller 6 are arranged inside the support ring 4, a plurality of adjusting assemblies 14 and extrusion rollers 6 are provided, and they are in one-to-one correspondence, and the support ring 4 is connected to the extrusion roller 6 through the adjusting assembly 14; a power mechanism 5 is arranged on the side end of the first housing 3, and the power mechanism 5 is used to provide power for the adjusting assembly 14.

[0040] Specifically, the adjusting assembly 14 includes a rotating cylinder 1401, a transmission gear 1402, a moving cylinder 1403, a threaded rod 1404, a second spring 1405, a second frame 1406, an auxiliary roller 1407, and a third frame 1408. Both sides inside the support ring 4 are rotatably connected to the rotating cylinder 1401. The inside of both rotating cylinders 1401 is slidably connected to the moving cylinder 1403. The end face of the moving cylinder 1403 is hexagonal. The inside of both moving cylinders 1403 is threadedly connected to the threaded rod 1404. The external thread directions of the two threaded rods 1404 are opposite. One end of the threaded rod 1404 close to the first housing 3 is fixedly connected to the second frame 1406. The inside of the second frame 1406 is rotatably connected to the auxiliary roller 1407. A second spring 1405 is arranged on the circumferential surface of the threaded rod 1404. One end of the second spring 1405 is fixedly connected to the second frame 1406, and the other end of the second spring 1405 is fixedly connected to the support ring 4. One end of the moving cylinder 1403 extending out of the support ring 4 is rotatably connected to the third frame 1408. The third frame 1408 is rotatably connected to the extrusion roller 6. The power mechanism 5 includes a first motor 501, a bearing seat 502, a rotating shaft 503, a first bevel gear 504, a first annular bevel gear 505, a first rotating ring 506, a second annular bevel gear 507, and a second bevel gear 508. The side end of the first housing 3 is fixedly connected to the first motor 501 and the bearing seat 502. The inside of the bearing seat 502 is rotatably connected to the rotating shaft 503. The output end of the first motor 501 is fixedly connected to the rotating shaft 503. The output end of the first motor 501 is fixedly connected to the first bevel gear 504. The inside of the support ring 4 is rotatably connected to the first rotating ring 506. The outside of the first rotating ring 506 is fixedly connected to the first annular bevel gear 505. The first annular bevel gear 505 meshes with the first bevel gear 504. The inside of the first rotating ring 506 is fixedly connected to the second annular bevel gear 507. The circumferential surface of the rotating cylinder 1401 close to the first rotating ring 506 is fixedly connected to the second bevel gear 508. The second bevel gear 508 meshes with the second annular bevel gear 507.

[0041] During use, the first motor 501 operates. At this time, under the cooperation of the first bevel gear 504 and the first annular bevel gear 505, the first rotating ring 506 is driven to rotate. Furthermore, under the cooperation of the second bevel gear 508 and the second annular bevel gear 507, the rotating cylinder 1401 is driven to rotate. As the rotating cylinder 1401 rotates, at this time, under the cooperation of the transmission gear 1402, the two moving cylinders 1403 are driven to rotate simultaneously, and under the cooperation of the threaded rod 1404, the moving cylinder 1403 rotates and moves at the same time. In this way, the third frame 1408 can be driven to move, so as to change the position of the extrusion roller 6 to facilitate the welding and forming of spiral steel pipes with different diameters.

[0042] An extrusion mechanism 7 is arranged between the two first shells 3. The extrusion mechanism 7 makes the extrusion rollers 6 closely contact with the spiral steel pipe through an extrusion adjustment assembly 14. Specifically, the extrusion mechanism 7 includes a second shell 701, a second motor 702, a transmission shaft 703, a worm 704, a worm gear 705, a second rotating ring 706 and a wedge block 707. The upper end of the first shell 3 is fixedly connected with the second shell 701. The transmission shaft 703 is rotatably connected inside the second shell 701. The circumferential surface of the transmission shaft 703 is fixedly connected with the worm 704. The front end of the second shell 701 is fixedly connected with the second motor 702. The output end of the second motor 702 is fixedly connected with the transmission shaft 703. A second rotating ring 706 is rotatably connected between the two second shells 701. The outer arc surface of the second rotating ring 706 is fixedly connected with the worm gear 705. The worm gear 705 meshes with the worm 704. The inner arc surface of the second rotating ring 706 is fixedly connected with the wedge block 707. There are multiple wedge blocks 707, and they correspond to the extrusion rollers 6 one by one.

[0043] During use, the second motor 702 works. At this time, with the cooperation of the transmission shaft 703, the worm 704 and the worm gear 705, the second rotating ring 706 can be driven to rotate. As the second rotating ring 706 rotates, the wedge block 707 is driven to rotate. After the wedge block 707 contacts the auxiliary roller 1407, the auxiliary roller 1407 will be extruded to move. Then, with the cooperation of the second frame 1406, the threaded rod 1404 and the moving cylinder 1403, the third frame 1408 can be driven to move, so that the extrusion rollers 6 can closely contact the spiral steel pipe. In this way, the clamping of the spiral steel pipe can be realized, the gap of the spiral weld can be reduced, and the stability of the weld gap control can be ensured during the rotary welding process of the spiral steel pipe, and the welding quality can be guaranteed and improved. At the same time, the movement of the second frame 1406 also compresses the second spring 1405, and the compressed second spring 1405 is beneficial for the extrusion rollers 6 to move away from the spiral steel pipe.

[0044] A lifting mechanism 8 is arranged at the rear side of the upper end of the bottom plate 1. A moving mechanism 9 and a rotating mechanism 10 are arranged at the front end of the lifting mechanism 8. The lifting mechanism 8 is connected with the rotating mechanism 10 through the moving mechanism 9. A flux bin 11 is arranged at the lower end of the rotating mechanism 10. The circumferential surface of the lower end of the flux bin 11 is fixedly connected with a fixing plate 15. A flux gun head 17 is fixedly connected to the lower end of the flux bin 11. Rolling assemblies 12 are arranged on both the front and rear sides of the lower end of the fixing plate 15. An electrode head 16 is fixedly connected to the lower left end of the fixing plate 15. A wire conduit 18 is fixedly connected inside the lower right side of the fixing plate 15. The lower end of the wire conduit 18 is communicated with the flux gun head 17.

[0045] Specifically, the lifting mechanism 8 includes a support column 801, a third motor 802, a lead screw 803, and a moving seat 804. The rear side of the upper end of the bottom plate 1 is fixedly connected with the support column 801. The lead screw 803 is rotatably connected inside the support column 801. The moving seat 804 is threadedly connected to the circumferential surface of the lead screw 803. The moving seat 804 is slidably connected to the support column 801. The upper end of the support column 801 is fixedly connected with the third motor 802. The output end of the third motor 802 is fixedly connected with the lead screw 803. The moving mechanism 9 includes an electric slide rail 901 and an electric slider 902. The front end of the moving seat 804 is fixedly connected with the electric slide rail 901. The electric slider 902 is slidably connected to the electric slide rail 901. The rotating mechanism 10 includes a fourth motor 1001, a mounting frame 1002, and a fixing frame 1003. The front end of the electric slider 902 is fixedly connected with the mounting frame 1002. The upper end of the mounting frame 1002 is fixedly connected with the fourth motor 1001. The output end of the fourth motor 1001 passes through the mounting frame 1002 and is rotatably connected to the mounting frame 1002. The output end of the fourth motor 1001 is fixedly connected with the fixing frame 1003. The fixing frame 1003 is fixedly connected to the flux hopper 11. The rolling assembly 12 includes a guide rod 1201, a first spring 1202, a first frame 1203, and a rolling roller 1204. The guide rod 1201 is slidably connected inside the fixing plate 15. The lower end of the guide rod 1201 is fixedly connected with the first frame 1203. The rolling roller 1204 is rotatably connected inside the first frame 1203. The circumferential surface of the guide rod 1201 is provided with the first spring 1202. One end of the first spring 1202 is fixedly connected with the fixing plate 15, and the other end of the first spring 1202 is fixedly connected with the first frame 1203.

[0046] During use, the electric slide rail 901 and the electric slider 902 are used to drive the flux gun head 17 to move to the starting position. Then, the fourth motor 1001 works to drive the fixing frame 1003 to rotate forward and backward by 180 degrees, thereby driving the fixing plate 15 to rotate forward and backward by 180 degrees. This is beneficial for subsequent welding work. Then, the third motor 802 works. At this time, with the cooperation of the lead screw 803, the moving seat 804 can be driven to move downward, and then the flux gun head 17 is driven to move downward, so that the flux gun head 17 corresponds to the weld. Then, the welding wire enters the flux gun head 17 from the welding wire conduit 18, and then corresponds to the weld. With the cooperation of the electrode head 16, the welding of the weld can be achieved. When welding a spiral steel pipe, at this time, the spiral steel pipe is driven to rotate by the steel pipe conveyor, and at the same time, the flux gun head 17 is also driven to move with the cooperation of the electric slide rail 901 and the electric slider 902. In this way, the welding of the spiral weld of the spiral steel pipe can be achieved. When the flux gun head 17 moves to the lead position of a spiral weld, the electric slider 902 stops moving.

[0047] It should be noted that the device provided by the present invention needs to be installed between two steel pipe conveyors, so as to relay and convey the spiral steel pipe through two support rings 4 during the actual welding process. In addition, the above-mentioned steel pipe conveyor is composed of an existing rotating mechanism and a conveying mechanism. The rotating mechanism drives the spiral steel pipe to achieve rotational drive, and the conveying mechanism drives the spiral steel pipe to perform conveying movement; the lead refers to the axial linear distance moved along the spiral seam of the spiral steel pipe for one circle of rotational movement. For the spiral steel pipe, its lead is clear during the processing and forming process. When the spiral steel pipe rotates at a constant speed, the moving speed of the electric slider 902 can be easily calculated during the movement of a single lead distance.

[0048] Sliding rails 13 are fixedly connected to both sides of the support column 801. The moving seat 804 is slidably connected to the sliding rails 13. During operation, by setting the sliding rails 13, the movement of the moving seat 804 can be limited under the action of the sliding rails 13, which is beneficial to the stable movement of the moving seat 804.

[0049] A forming method of a spiral steel pipe forming machine, using the above-mentioned spiral steel pipe forming machine, specifically includes the following steps:

[0050] S1: First, adjust the position of the extrusion roller 6 according to the diameter of the spiral steel pipe. During adjustment, the power mechanism 5 provides power to the adjustment component 14, and the position of the extrusion roller 6 is adjusted with the cooperation of the adjustment component 14;

[0051] S2: After adjusting the position of the extrusion roller 6, one end of the spiral steel pipe to be welded and formed is passed through between the two support rings 4. The extrusion mechanism 7 drives the adjustment component 14 to move, and then drives the extrusion roller 6 to clamp the spiral steel pipe, so that the spiral steel pipe is horizontally supported on the two support rings 4;

[0052] S3: The lifting mechanism 8 performs a descending operation, driving the flux gun head 17 to descend. At the same time, with the cooperation of the moving mechanism 9, the flux gun head 17 is also moved to the starting displacement end. By moving and adjusting the spiral steel pipe, one of the top intersection points where the vertical plane passing through the central axis of the spiral steel pipe intersects the spiral seam is aligned with the flux gun head 17;

[0053] S4: Drive the spiral steel pipe to rotate uniformly by 360 degrees. While the spiral steel pipe is rotating, drive the flux gun head 17 to move and weld uniformly through the moving mechanism 9. And when the spiral steel pipe stops rotating by 360 degrees, the moving distance of the moving mechanism 9 is the lead distance of the spiral seam of the spiral steel pipe;

[0054] S5: After completing the single-lead distance welding through S4, the extrusion mechanism 7 operates in reverse, causing the extrusion roller 6 to no longer extrude the spiral steel pipe. Then, the spiral steel pipe is pushed to move a single lead distance, and the flux gun head 17 is driven to rotate 180 degrees by the rotation mechanism 10, driving the spiral steel pipe to rotate 360 degrees in the opposite direction relative to S3. The flux gun head 17 is driven to move at a constant speed by the moving mechanism 9 for welding until the starting position of the movement in S4 is reached.

[0055] S6: After completing the single-lead welding with reverse rotation through S5, continue to push the spiral steel pipe to move a single lead distance, and repeat the welding processes of S4 and S5 until the spiral steel pipe moves through the two support rings 4.

[0056] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A spiral steel pipe forming machine, comprising a bottom plate (1), characterized in that, On the upper end of the bottom plate (1), support frames (2) are fixedly connected to both the left and right sides. On the upper ends of both the left and right sides of the support frames (2), first shells (3) are fixedly connected. On the inner arc surface of the first shells (3), support rings (4) are fixedly connected. Inside the support rings (4), an adjusting assembly (14) and extrusion rollers (6) are arranged. There are multiple adjusting assemblies (14) and extrusion rollers (6), and they are in one-to-one correspondence. The support rings (4) are connected to the extrusion rollers (6) through the adjusting assemblies (14). On the side end of the first shell (3), a power mechanism (5) is arranged. The power mechanism (5) is used to provide power for the adjusting assembly (14). Between the two first shells (3), an extrusion mechanism (7) is arranged. The extrusion mechanism (7) makes the extrusion rollers (6) closely contact with the spiral steel pipe by squeezing the adjusting assembly (14). On the upper end of the rear side of the bottom plate (1), a lifting mechanism (8) is arranged. At the front end of the lifting mechanism (8), a moving mechanism (9) and a rotating mechanism (10) are arranged. The lifting mechanism (8) is connected to the rotating mechanism (10) through the moving mechanism (9). At the lower end of the rotating mechanism (10), a flux bin (11) is arranged. On the circumferential surface of the lower end of the flux bin (11), a fixing plate (15) is fixedly connected. At the lower end of the flux bin (11), a flux gun head (17) is fixedly connected. On the front and rear sides of the lower end of the fixing plate (15), rolling assemblies (12) are arranged. On the lower end of the left side of the fixing plate (15), an electrode head (16) is fixedly connected. Inside the right side of the fixing plate (15), a wire conduit (18) is fixedly connected. The lower end of the wire conduit (18) is communicated with the flux gun head (17).

2. The spiral steel pipe forming machine according to claim 1, characterized in that, The adjusting assembly (14) includes a rotating cylinder (1401), a transmission gear (1402), a moving cylinder (1403), a threaded rod (1404), a second spring (1405), a second frame (1406), an auxiliary roller (1407), and a third frame (1408). On both sides inside the support ring (4), the rotating cylinders (1401) are rotatably connected. Inside both the rotating cylinders (1401), the moving cylinders (1403) are slidably connected. The end face of the moving cylinder (1403) is hexagonal. Inside both the moving cylinders (1403), the threaded rods (1404) are threadedly connected. The external threads of the two threaded rods (1404) have opposite directions. One end of the threaded rod (1404) close to the first shell (3) is fixedly connected to the second frame (1406). Inside the second frame (1406), the auxiliary roller (1407) is rotatably connected. On the circumferential surface of the threaded rod (1404), the second spring (1405) is arranged. One end of the second spring (1405) is fixedly connected to the second frame (1406), and the other end of the second spring (1405) is fixedly connected to the support ring (4). One end of the moving cylinder (1403) extending out of the support ring (4) is rotatably connected to the third frame (1408). The third frame (1408) is rotatably connected to the extrusion roller (6).

3. A spiral steel pipe forming machine according to claim 2, characterized in that, The power mechanism (5) includes a first motor (501), a bearing block (502), a rotating shaft (503), a first bevel gear (504), a first ring bevel gear (505), a first rotating ring (506), a second ring bevel gear (507) and a second bevel gear (508). The side end of the first housing (3) is fixedly connected with the first motor (501) and the bearing block (502). The rotating shaft (503) is rotatably connected inside the bearing block (502). The output end of the first motor (501) is fixedly connected with the rotating shaft (503). The output end of the first motor (501) is fixedly connected with the first bevel gear (504). The first rotating ring (506) is rotatably connected inside the support ring (4). The first ring bevel gear (505) is fixedly connected to the outer side of the first rotating ring (506). The first ring bevel gear (505) meshes with the first bevel gear (504). The second ring bevel gear (507) is fixedly connected to the inner side of the first rotating ring (506). The second bevel gear (508) is fixedly connected to the circumferential surface of the rotating cylinder (1401) near the first rotating ring (506). The second bevel gear (508) meshes with the second ring bevel gear (507).

4. The spiral steel pipe forming machine according to claim 3, characterized in that, The extrusion mechanism (7) includes a second housing (701), a second motor (702), a transmission shaft (703), a worm (704), a worm gear (705), a second rotating ring (706) and a wedge block (707). The second housing (701) is fixedly connected to the upper end of the first housing (3). The transmission shaft (703) is rotatably connected inside the second housing (701). The worm (704) is fixedly connected to the circumferential surface of the transmission shaft (703). The second motor (702) is fixedly connected to the front end of the second housing (701). The output end of the second motor (702) is fixedly connected with the transmission shaft (703). The second rotating ring (706) is rotatably connected between the two second housings (701). The worm gear (705) is fixedly connected to the outer arc surface of the second rotating ring (706). The worm gear (705) meshes with the worm (704). The wedge block (707) is fixedly connected to the inner arc surface of the second rotating ring (706). There are multiple wedge blocks (707), and they correspond to the extrusion rollers (6) one by one.

5. A spiral steel pipe forming machine according to claim 1, characterized in that The lifting mechanism (8) includes a support column (801), a third motor (802), a lead screw (803) and a moving seat (804). The support column (801) is fixedly connected to the rear side of the upper end of the bottom plate (1). The lead screw (803) is rotatably connected inside the support column (801). The moving seat (804) is threadedly connected to the circumferential surface of the lead screw (803). The moving seat (804) is slidably connected to the support column (801). The third motor (802) is fixedly connected to the upper end of the support column (801). The output end of the third motor (802) is fixedly connected with the lead screw (803).

6. The spiral steel pipe forming machine according to claim 5, characterized in that, Both sides of the support column (801) are fixedly connected with slide rails (13), and the moving seat (804) is slidably connected with the slide rails (13).

7. A spiral steel pipe forming machine according to claim 5, characterized in that, The moving mechanism (9) includes an electric slide rail (901) and an electric slider (902). The front end of the moving seat (804) is fixedly connected with the electric slide rail (901), and the electric slider (902) is slidably connected to the electric slide rail (901).

8. A spiral steel pipe forming machine according to claim 7, characterized in that, The rotating mechanism (10) includes a fourth motor (1001), a mounting bracket (1002), and a fixing bracket (1003). The front end of the electric slider (902) is fixedly connected with the mounting bracket (1002). The upper end of the mounting bracket (1002) is fixedly connected with the fourth motor (1001). The output end of the fourth motor (1001) penetrates through the mounting bracket (1002) and is rotatably connected with the mounting bracket (1002). The output end of the fourth motor (1001) is fixedly connected with the fixing bracket (1003), and the fixing bracket (1003) is fixedly connected with the flux bin (11).

9. A spiral steel pipe forming machine according to claim 1, characterized in that, The rolling assembly (12) includes a guide rod (1201), a first spring (1202), a first frame (1203), and a rolling roller (1204). The guide rod (1201) is slidably connected inside the fixed plate (15). The lower end of the guide rod (1201) is fixedly connected with the first frame (1203), and the rolling roller (1204) is rotatably connected inside the first frame (1203). A first spring (1202) is arranged on the circumferential surface of the guide rod (1201). One end of the first spring (1202) is fixedly connected with the fixed plate (15), and the other end of the first spring (1202) is fixedly connected with the first frame (1203).

10. A forming method of a spiral steel pipe forming machine, characterized in that: When using the spiral steel pipe forming machine according to any one of claims 1-9, the following steps are specifically included: S1: First, adjust the position of the extrusion roller (6) according to the diameter of the spiral steel pipe. During adjustment, the power mechanism (5) provides power to the adjustment component (14), and with the cooperation of the adjustment component (14), the position of the extrusion roller (6) is adjusted. S2: After adjusting the position of the extrusion roller (6), one end of the spiral steel pipe to be welded and formed is passed through between the two support rings (4). The extrusion mechanism (7) drives the adjustment component (14) to move, thereby driving the extrusion roller (6) to clamp the spiral steel pipe, so that the spiral steel pipe is horizontally supported on the two support rings (4). S3: The lifting mechanism (8) performs a descending operation, driving the flux gun head (17) to descend. At the same time, with the cooperation of the moving mechanism (9), the flux gun head (17) is also moved to the starting displacement end. By moving and adjusting the spiral steel pipe, one of the top intersection points where the vertical plane passing through the central axis on the spiral steel pipe intersects the spiral seam is aligned with the flux gun head (17). S4: Drive the spiral steel pipe to rotate uniformly by 360 degrees. While the spiral steel pipe is rotating, drive the flux gun head (17) to move uniformly for welding through the moving mechanism (9). And when the spiral steel pipe stops rotating by 360 degrees, the moving distance of the moving mechanism (9) is the lead distance of the spiral seam of the spiral steel pipe; S5: After completing the welding of a single lead distance through S4, the extrusion mechanism (7) works in the reverse direction, so that the extrusion roller (6) no longer extrudes the spiral steel pipe. Then push the spiral steel pipe to move a single lead distance, and drive the flux gun head (17) to rotate by 180 degrees through the rotating mechanism (10), drive the spiral steel pipe to rotate relative to S3 in the reverse direction by 360 degrees, and drive the flux gun head (17) to move uniformly for welding to the moving starting position of S4 through the moving mechanism (9); S6: After completing the single-lead welding of the reverse rotation through S5, continue to push the spiral steel pipe to move a single lead distance, and repeat the welding process of S4 and S5 until the spiral steel pipe moves through the two support rings (4).

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