Straight welded pipe welding forming unit

Abstract

The invention relates to the technical field of welded pipe welding, and particularly discloses a straight welded pipe welding forming unit which comprises a fixed bottom frame arranged on a production line, and a feeding area, a pretreatment area, an extrusion area and a welding area arranged above the fixed bottom frame, and the welding area is provided with a welding frame fixed to the tail end of the fixed bottom frame. A limiting wheel used for limiting a welded pipe and a laser welding gun arranged in the middle of the welding frame and used for welding are arranged on the inner side of the welding frame. A mounting base is fixed to the top face of the fixing bottom frame, limiting side plates are symmetrically and integrally arranged on the front side and the rear side of the top face of the mounting base, and the pretreatment area and the extrusion area are arranged on the left side and the right side of the mounting base correspondingly. According to the welding forming unit for the longitudinal welded pipe, a steel belt can be stably fed and pretreated, the height positions of different extrusion wheels can be adjusted, so that the center deviation of welded pipe forming is reduced, a welding seam and a welding gun can be stably aligned, and the welding forming efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welded pipe welding processing, in particular to a straight seam welded pipe welding and forming machine unit. Background Art

[0002] Straight seam welded pipes are generally made of hot-rolled or cold-rolled steel plates or steel strips that are extruded and then welded. Since the weld seam is in a straight line, it is generally called straight seam welded pipe.

[0003] For example, patent application publication number CN 115255640 A relates to a high-strength steel laser pipe welding production line. Compared to traditional laser welding equipment, the laser welding equipment of the present invention has a laser welding head fixed above the weld seam. By positioning and squeezing the weld seam of the steel pipe during the pipe rolling process, the weld seam is aligned in a straight line. This eliminates the need to swing the laser head during the welding process, allowing the laser head to continuously weld the pipe. This significantly increases the feed speed of the workpiece, improves welding efficiency, and significantly improves welding quality. In addition, by providing a V-shaped groove in the weld seam, air can be effectively squeezed out, avoiding hydrogen embrittlement and improving the overall strength of the welded steel pipe.

[0004] For example, the patent application publication number CN117961301A discloses a laser arc hybrid welding process for a straight seam welded pipe production line, which belongs to the field of straight seam welded pipe welding technology and includes hybrid welding equipment. The hybrid welding equipment includes the following structures: a transmission mechanism, a preheating mechanism, a welding area, and an insulation mechanism are arranged in sequence above the transmission mechanism along the transmission direction of the transmission mechanism, a hybrid welding gun is provided in the welding area, and the hybrid welding gun is composed of adjacent laser heads and TIG welding guns, and two extrusion mechanisms are provided below the hybrid welding gun; the process includes the following steps: S1, processing outer grooves on the edges of both sides of the steel plate; S2, processing the steel plate into a preformed steel pipe; S3, preheating the outer groove of the preformed steel pipe through the preheating mechanism; S4, after preheating, the preformed steel pipe is transmitted to the welding area for preparation for welding; S5, extruding the preformed steel pipe through the extrusion mechanism while welding; S6, the straight seam welded pipe is slowly cooled in the insulation mechanism; S7, inspecting the straight seam welded pipe.

[0005] However, in view of the actual use of the current straight seam welded pipe welding and forming device, it still has certain disadvantages. For example, due to the different heights of the extrusion wheels, the center is offset when the steel strip is extruded, which causes the weld to be offset and distorted after the steel pipe is formed, affecting the alignment between the welding gun and the weld.

[0006] At the same time, the welded pipe steel strip is directly fed and extruded. However, the steel strip will have impurities on its surface due to surface oxidation after high-temperature forming, residual lubricating oil or coolant, environmental pollution and other factors. The untreated steel strip will increase the center deviation due to its impurities and affect the quality of the welded pipe.

[0007] Therefore, we propose a straight seam welded pipe welding and forming unit to solve the above-mentioned problems. Summary of the Invention

[0008] The purpose of the present invention is to provide a straight seam welded pipe welding and forming unit to solve the problem that the current welded pipe forming device proposed in the above background technology cannot avoid center deviation during steel strip forming, the pretreatment process is simple, which is not conducive to the rapid treatment of impurities on the surface of the steel strip, and affects the quality of welded pipe forming.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a straight seam welded pipe welding and forming unit, comprising: a fixed base frame mounted on a production line, and feeding, pretreatment, extrusion, and welding areas arranged above the fixed base frame; the welding area is provided with a welding frame fixed to the end of the fixed base frame, the inner side of the welding frame is provided with a limiting wheel for limiting the position of the welded pipe, and a laser welding gun is provided in the middle of the welding frame for welding;

[0010] A mounting seat is fixed on the top surface of the fixed base frame, and limited side plates are symmetrically integrated on the front and rear sides of the top surface of the mounting seat, and the pretreatment area and the extrusion area are respectively arranged on the left and right sides of the mounting seat;

[0011] The pretreatment area includes a first feed rack, a pretreatment rack and a second feed rack. The first feed rack and the second feed rack are both provided with two sets of height-adjustable flat rollers on their inner sides. The pretreatment rack is arranged between the first feed rack and the second feed rack. The inner side of the pretreatment rack is provided with a pretreatment mechanism for surface treatment of the welding material.

[0012] The first feed rack, the pretreatment rack and the second feed rack are all slidably installed on the inner side of the limiting side plate. The first feed rack, the pretreatment rack and the second feed rack are symmetrically provided with limiting holes at the bottom. The limiting holes are connected to support rods for adjusting the distance between the first feed rack, the pretreatment rack and the second feed rack.

[0013] Furthermore: the feeding area is arranged on the left side of the fixed base frame, and the feeding area includes a fixed side plate fixed to the left end of the fixed base frame, the inner side of the fixed side plate is rotatably connected to a rotating shaft, the outer side of the rotating shaft is integrally welded with a cantilever, a support rod is fixed to the inner side of the top end of the cantilever, and a limiting slider is slidably installed on the outer side of the support rod, and the limiting slider is screwed into the outer side of the support rod by its internal bolt to limit the steel belt.

[0014] Furthermore: an inner partition is symmetrically and vertically fixedly installed on the inner side of the first feed rack, a first adjusting rod is vertically arranged between the inner partition and the inner side wall of the first feed rack, a slide groove is opened inside the inner partition, and a first slider and a second slider that are connected to the inner side of the slide groove for sliding up and down are arranged between the inner partition and the first feed rack, the second slider is correspondingly connected to the first adjusting rod, the bottom end of the first adjusting rod passes through the first slider and is rotatably connected to the bottom surface of the first feed rack, and flat rollers are installed on the inner sides of the first slider and the second slider.

[0015] Furthermore: fixed blocks are fixedly installed on the left and right sides of the bottom of the first slider, and a pushing plate is provided below the fixed block, which is slidable left and right and connected between the first feed rack and the inner partition. The inside of the pushing plate is connected to a second adjusting rod with opposite screwing directions at both ends.

[0016] Furthermore: a third adjusting rod is symmetrically rotatably installed on the inner side of the pre-treatment material rack, the outer side of the third adjusting rod is connected to a third slider slidably connected to the inner side of the pre-treatment material rack, the inner side of the third slider is rotatably connected to the lower clamping platform, and the upper clamping platform is telescopically installed above the lower clamping platform, and limiting rollers are provided at the left and right ends of the lower clamping platform and the upper clamping platform, a heating tube is provided on the left side of the middle of the lower clamping platform, and a friction plate is provided on the right side of the middle of the lower clamping platform, the inner side of the friction plate is connected to a connecting rod fixed between the lower clamping platform, and the top of the connecting rod is provided with a first tensioning spring;

[0017] Among them, a scraping strip is protruding from the surface of the friction plate, and the scraping strip is inclined from the center to both sides. A flat scraping plate is fixed to the right end of the surface of the friction plate. A through groove is provided at the bottom of the lower clamping platform, and a drop groove is integrated and connected to the bottom surface of the lower clamping platform. The bottom end of the drop groove is connected to a recovery pipe.

[0018] Furthermore: a first convex plate is fixed on the side of the lower clamping platform protruding outward, a fourth adjusting rod is fixed above the first convex plate, a second convex plate is fixed on the side of the upper clamping platform protruding outward, the top end of the fourth adjusting rod passes through the second convex plate, the top end of the fourth adjusting rod is connected to a fixing nut, and a second tensioning spring connected between the first convex plate and the second convex plate is sleeved on the outer side of the fourth adjusting rod.

[0019] Furthermore: the extrusion molding area includes a primary deformation material rack, a first transverse extrusion material rack, a vertical extrusion material rack and a second transverse extrusion material rack. The frame structure arrangement of the primary deformation material rack and the vertical extrusion material rack is the same as the frame structure arrangement of the first feeding rack. The inner side of the primary deformation material rack is provided with an upper extrusion roller and a lower extrusion roller that can be adjusted for lifting and lowering. The inner side of the vertical extrusion material rack is provided with a vertical extrusion wheel for vertically extruding the welding material.

[0020] Furthermore: the frame structure of the first transverse extrusion material rack and the second transverse extrusion material rack is the same as the frame structure of the pretreatment material rack, and a fifth adjusting rod is vertically rotatably installed on the inner side of the first transverse extrusion material rack, and the outer side of the fifth adjusting rod is connected to the fourth slider and the fifth slider, and the inner sides of the fourth slider and the fifth slider are respectively connected to the slide rod and the sixth adjusting rod, and the outer side of the sixth adjusting rod is connected to the first transverse extrusion wheel located between the sixth adjusting rod and the slide rod, and the top of the first transverse extrusion wheel is slidably connected to the slide rod.

[0021] Furthermore: a second transverse extrusion wheel arranged in the same manner as the first transverse extrusion wheel is provided on the inner side of the second transverse extrusion rack.

[0022] Furthermore: the bottoms of the first feeding rack, pretreatment rack, second feeding rack, primary deformation rack, first transverse extrusion rack, vertical extrusion rack and second transverse extrusion rack are symmetrically provided with limiting holes, and the limiting holes are connected to the support rods by threaded connection, and the threads at both ends of the support rods are screwed in opposite directions.

[0023] Compared with the prior art, the present invention has at least the following beneficial effects: the straight seam welded pipe welding and forming unit can stably load and pre-treat the steel strip, can adjust the height positions of different extrusion wheels to reduce the center offset of the welded pipe forming, can ensure stable alignment between the weld seam and the welding gun, and improve the welding forming efficiency;

[0024] 1. This solution is equipped with a support rod and a limit slider. By rotating the rotating structure between the shaft and the fixed side plate, the inclination angle of the cantilever on the outside of the fixed base frame is adjusted, thereby adjusting the height of the support rod. The limit slider slides on the outside of the support rod to facilitate loading of steel strips of different widths.

[0025] 2. This solution is equipped with a mounting base and limiting side plates. The symmetrical arrangement of the limiting side plates on both sides of the top surface of the mounting base facilitates the sliding adjustment of the frame structure of the pre-treatment area and the extrusion molding area, making it easy to adjust the position distance for different welded pipe molding.

[0026] 3. This solution is provided with a first adjusting rod, a pushing plate, and a second adjusting rod. By rotating the first adjusting rod, the height position of the second slider can be adjusted, thereby adjusting the height of the upper flat roller. By rotating the second adjusting rod, the pushing plate slides toward the inner bottom of the inner partition. Since the pushing plate presses the first slider through the fixed block, the height position of the first slider can be adjusted, thereby adjusting the height of the lower flat roller, so as to adjust the entry height of the steel strip and maintain the center of the steel strip on the same horizontal line.

[0027] 4. This solution is equipped with a lower clamping platform, an upper clamping platform, and a friction plate. The lower clamping platform can be adjusted in height and rotated on the inner side of the pre-processing rack via a third slider, making it easy to adjust the entry angle and height of the steel strip. The heating tubes inside the lower and upper clamping platforms can preheat the steel strip, making it easier to extrude and form. The scraping strips and flat wiping plates on the surface of the friction plate facilitate grinding and removing impurities on the steel strip surface, reducing the center deviation of the steel strip and improving the quality of the welded pipe.

[0028] 5. In this solution, a fifth adjusting rod, a sixth adjusting rod and a sliding rod are provided. The rotation of the fifth adjusting rod facilitates the adjustment of the height of the fourth slider and the fifth slider to adjust the height position of the first transverse extrusion wheel. At the same time, the rotation of the sixth adjusting rod facilitates the adjustment of the spacing of the first transverse extrusion wheel, which is convenient for molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall back structure of the present invention;

[0032] Figure 3 It is a schematic diagram of the overall cross-section structure of the present invention;

[0033] Figure 4 It is a schematic side cross-sectional view of the first feeding rack of the present invention;

[0034] Figure 5 This is a schematic diagram of a partially cutaway front structure of the first feed rack of the present invention;

[0035] Figure 6 This is a schematic diagram of the overall middle section structure of the first feeding rack and the pre-treatment rack of the present invention;

[0036] Figure 7 This is a schematic side cross-sectional view of the pretreatment rack of the present invention;

[0037] Figure 8 This is a schematic diagram of the exploded structure of the pretreatment rack of the present invention;

[0038] Figure 9 It is a schematic diagram of the overall structure of the first transverse extrusion material rack of the present invention.

[0039] In the figure: 1, fixed base; 11, fixed side plate; 12, rotating shaft; 13, cantilever; 14, support rod; 15, limit slider; 16, mounting base; 17, limit side plate; 18, limit side plate;

[0040] 2. First feed rack; 21. Inner partition; 22. Slide; 23. First slider; 24. Second slider; 25. First adjustment rod; 26. Flat roller; 27. Fixed block; 28. Pushing plate; 29. ​​Second adjustment rod;

[0041] 3. Pre-treatment rack; 31. Third adjustment rod; 32. Third slider; 33. Lower clamping platform; 34. Upper clamping platform; 35. Limit roller; 36. Heating tube; 37. Friction plate; 38. Scraping strip; 39. Flat scraping plate; 310. Connecting rod; 311. First tensioning spring; 312. First convex plate; 313. Fourth adjustment rod; 314. Second tensioning spring; 315. Second convex plate; 316. Fixing nut; 317. Through slot; 318. Drop chute; 319. Recovery pipe;

[0042] 4. Second feeding rack; 5. Primary deformation rack; 51. Upper squeezing roller; 52. Lower squeezing roller;

[0043] 6. First transverse extrusion rack; 61. Fifth adjustment rod; 62. Fourth slider; 63. Fifth slider; 64. Sixth adjustment rod; 65. Sliding rod; 66. First transverse extrusion wheel;

[0044] 7. Vertical extrusion rack; 71. Vertical extrusion wheel; 8. Second horizontal extrusion rack; 81. Second horizontal extrusion wheel; 9. Welding rack; 91. Limiting wheel; 92. Laser welding gun;

[0045] 10. Limiting hole; 101. Support rod. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention, so that the implementation process of how this application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0047] See also Figures 1-9 , the present invention provides the following technical solutions:

[0048] A straight seam welded pipe welding and forming unit includes: a fixed base frame 1, a fixed side plate 11, a rotating shaft 12, a cantilever 13, a support rod 14, a limiting slider 15, a mounting seat 16, a limiting side plate 17, a limiting side plate 18, a first feed rack 2, an inner partition 21, a chute 22, a first slider 23, a second slider 24, a first adjusting rod 25, a flat roller 26, a fixed block 27, a pushing plate 28, a second adjusting rod 29, a pre-treatment rack 3, a third adjusting rod 31, a third slider 32, a lower clamping platform 33, an upper clamping platform 34, a limiting roller 35, a heating tube 36, a friction plate 37, a scraping strip 38, a flat scraping plate 39, a connecting rod 310, and a first tensioning spring 3 11. First convex plate 312, fourth adjustment rod 313, second tensioning spring 314, second convex plate 315, fixing nut 316, through slot 317, drop slot 318, recovery tube 319, second feed rack 4, primary deformation rack 5, upper extrusion roller 51, lower extrusion roller 52, first transverse extrusion rack 6, fifth adjustment rod 61, fourth slider 62, fifth slider 63, sixth adjustment rod 64, slide bar 65, first transverse extrusion wheel 66, vertical extrusion rack 7, vertical extrusion wheel 71, second transverse extrusion rack 8, second transverse extrusion wheel 81, welding rack 9, limiting wheel 91, laser welding gun 92, limiting hole 10, and support rod 101;

[0049] Among them: Figure 1 、 Figure 2 and Figure 3 In the figure, the feeding, pre-processing, extrusion and welding areas are arranged above the fixed base frame 1. The welding area is provided with a welding frame 9 fixed to the end of the fixed base frame 1. The inner side of the welding frame 9 is provided with a limiting wheel 91 for limiting the position of the welded pipe, and a laser welding gun 92 for welding is provided in the middle of the welding frame 9;

[0050] In a specific application scenario, the steel strip is fed through the feeding area in a limited manner, and the impurities on the surface of the steel strip are treated in the pretreatment area and the entry angle and height of the steel strip are adjusted to facilitate rapid extrusion molding in the extrusion area. After molding, the welded pipe enters the inner side of the welding frame 9 to facilitate welding of the weld seam by the laser welding gun 92.

[0051] Among them: Figure 1 and Figure 2 In the figure, the feeding area is arranged on the left side of the fixed base frame 1, and the feeding area includes a fixed side plate 11 fixed to the left end of the fixed base frame 1. The inner side of the fixed side plate 11 is rotatably connected to the rotating shaft 12. The outer side of the rotating shaft 12 is integrally welded with a cantilever 13. A supporting rod 14 is fixed to the inner side of the top of the cantilever 13. A limiting slider 15 is slidably installed on the outer side of the supporting rod 14. The limiting slider 15 is screwed into the outer side of the supporting rod 14 by its internal bolt to limit the side of the steel strip.

[0052] In specific application scenarios, such as Figure 1The middle rotating shaft 12 is connected to the fixed side plate 11 by rotation, and can adjust the tilt angle of the cantilever 13, thereby adjusting the height position of the support rod 14. The rotating shaft 12 can be fixed by a ratchet pawl mechanism or directly locked by tightening the bolts. After the height position of the support rod 14 is fixed, Figure 1 and Figure 2 The spacing size of the limit slider 15 is adjusted based on the width of the welded pipe steel strip material, so that the limit slider 15 slides on both sides of the center of the support rod 14 to adapt to the limited entry of the steel strip, and the limit slider 15 is limited on the surface of the support rod 14 by the bolts installed inside the limit slider 15 to maintain the stable entry of the steel strip.

[0053] Among them: Figure 1 、 Figure 2 and Figure 3 In the figure, a mounting seat 16 is fixed to the top surface of the fixed base frame 1, and a limiting side plate 17 is symmetrically integrated on both sides of the top surface of the mounting seat 16. The pretreatment area and the extrusion area are respectively arranged on the left and right sides of the mounting seat 16. The pretreatment area includes a first feed rack 2, a pretreatment rack 3 and a second feed rack 4. The inner sides of the first feed rack 2 and the second feed rack 4 are respectively provided with two groups of flat rollers 26 that can be adjusted in height. The pretreatment rack 3 is arranged between the first feed rack 2 and the second feed rack 4. A pretreatment mechanism for surface treatment of the welding material is provided on the inner side of the pretreatment rack 3. The first feed rack 2, the pretreatment rack 3 and the second feed rack 4 are all slidably mounted on the inner side of the limiting side plate 17;

[0054] In a specific application scenario, the first feed rack 2, the pretreatment rack 3 and the second feed rack 4 can slide above the mounting seat 16 to adjust the position spacing of the first feed rack 2, the pretreatment rack 3 and the second feed rack 4. At the same time, the flat roller 26 used for clamping and conveying the steel strip can be height-adjusted on the inner side of the first feed rack 2 and the second feed rack 4 to facilitate the first feed rack 2 to receive the steel strip entering from the feeding area, and to facilitate the second feed rack 4 to adjust the height and angle of the steel strip entering the extrusion molding area. At the same time, a pretreatment rack 3 is set between the first feed rack 2 and the second feed rack 4, and the surface of the steel strip is pretreated by the pretreatment mechanism set on the inner side of the pretreatment rack 3 to help improve the molding quality of the welded pipe.

[0055] Among them: Figure 3 、 Figure 4 、 Figure 5 and Figure 6In the embodiment, an inner partition 21 is symmetrically and vertically fixedly installed on the inner side of the first feed rack 2, and a first adjusting rod 25 is vertically arranged between the inner partition 21 and the inner side wall of the first feed rack 2. A slide groove 22 is provided inside the inner partition 21, and a first slider 23 and a second slider 24 are provided between the inner partition 21 and the first feed rack 2 to slide up and down and connect to the inner side of the slide groove 22. The second slider 24 is correspondingly connected to the first adjusting rod 25. The bottom end of the first adjusting rod 25 passes through the first slider 23 and is rotatably connected to the bottom surface of the first feed rack 2. Flat rollers 26 are installed on the inner sides of the first slider 23 and the second slider 24. Fixed blocks 27 are fixedly installed on the left and right sides of the bottom of the first slider 23. A pushing plate 28 is provided below the fixed block 27 and is slidably connected left and right between the first feed rack 2 and the inner partition 21. The interior of the pushing plate 28 is connected to a second adjusting rod 29 with threads at both ends screwed in opposite directions.

[0056] In specific application scenarios: Figure 4 The polygonal prism provided at the top of the first adjusting rod 25 facilitates its rotation. When the first adjusting rod 25 is rotated, the threaded connection between the first adjusting rod 25 and the second slider 24 can drive the second slider 24 to slide up and down between the first feed rack 2 and the inner partition 21 and under the limit of the slide groove 22, thereby adjusting the height position of the second slider 24 to adjust the height position of the upper flat roller 26. Figure 5 When in use, the second adjusting rod 29 is rotated by inserting a tool into the polygonal groove at the end of the second adjusting rod 29, and the threaded structure with different screwing directions at the two ends of the second adjusting rod 29 is used to adjust the position of the pushing plate 28 connected to its outer side. The relative sliding of the pushing plate 28 can utilize the relative squeezing between the pushing plate 28 and the fixed block 27 to adjust the height position of the first slider 23, thereby adjusting the height of the flat roller 26 of the lower layer, so that the flat roller 26 of the lower layer can carry the incoming steel strip to adjust the lowest height of the steel strip, and then the height of the upper layer is lowered again, so that the flat rollers 26 of the upper and lower layers clamp the steel strip, so as to facilitate the conveying of the steel strip.

[0057] At the same time, a slideway can be set on the fitting side between the pushing plate 28 and the first feed rack 2 and the inner partition 21 to limit it to prevent it from detaching. A magnetic connection or other method can be used between the pushing plate 28 and the fixed block 27 to maintain the fitting between the fixed block 27 and the pushing plate 28, so as to facilitate the height stability adjustment of the first slider 23.

[0058] Among them: Figure 3 、 Figure 6 、 Figure 7 and Figure 8The third adjusting rod 31 is symmetrically rotatably installed on the inner side of the pre-treatment material rack 3, and the outer side of the third adjusting rod 31 is connected to the third slider 32 which is slidably connected to the inner side of the pre-treatment material rack 3. The inner side of the third slider 32 is rotatably connected to the lower clamping platform 33, and the upper clamping platform 34 is telescopically installed above the lower clamping platform 33. Limit rollers 35 are provided at the left and right ends of the lower clamping platform 33 and the upper clamping platform 34. A heating tube 36 is provided on the left side of the middle of the lower clamping platform 33. A first convex plate 312 is fixed on the side of the lower clamping platform 33 protruding outward, and a fourth adjusting rod 313 is fixed above the first convex plate 312. A second convex plate 315 is fixed on the side of the upper clamping platform 34 protruding outward, and the top of the fourth adjusting rod 313 corresponds to passing through the second convex plate 315. The top of the rod 313 is connected to a fixing nut 316, and the outer side of the fourth adjusting rod 313 is sleeved with a second tensioning spring 314 connected between the first convex plate 312 and the second convex plate 315. A friction plate 37 is provided on the right side of the middle part of the lower clamping platform 33, and the inner side of the friction plate 37 is connected to a connecting rod 310 fixed to the lower clamping platform 33. The top of the connecting rod 310 is provided with a first tensioning spring 311. A scraping strip 38 is protruding from the surface of the friction plate 37, and the scraping strip 38 is inclined from the center to both sides. A flat scraping plate 39 is fixed to the right end of the surface of the friction plate 37. A through groove 317 is provided at the bottom of the lower clamping platform 33, and a drop groove 318 is provided on the bottom surface of the lower clamping platform 33. The bottom end of the drop groove 318 is connected to a recovery pipe 319.

[0059] In specific application scenarios, such as Figure 3 and Figure 6 After the steel strip entering the feeding area is carried and conveyed by the flat roller 26 inside the first feeding rack 2, the height position of the flat roller 26 inside the second feeding rack 4 is adjusted to adjust the height of the steel strip entering the extrusion molding area. After the adjustment is completed, Figure 8 The third adjusting rod 31 is rotated on the inner side of the pre-processing rack 3, and the third slider 32 is driven by the third adjusting rod 31 to adjust the height of the inner side of the pre-processing rack 3. At the same time, the lower clamping platform 33 is rotated on the inner side of the third slider 32 to adjust the height and angle of the lower clamping platform 33, so that the limiting rollers 35 provided at both ends of the inner side of the lower clamping platform 33 can fit with the bottom surface of the steel strip entering between the first feeding rack 2 and the second feeding rack 4. After the height and angle of the lower clamping platform 33 are adjusted, as shown in FIG. Figure 7When the upper clamping platform 34 is in the state of being pressed down, the upper clamping platform 34 is pressed down and the upper clamping platform 34 is pressed down, so that the upper clamping platform 34 and the upper clamping platform 34 can be tightened to the upper limit of the workpiece 310.

[0060] Among them, such as Figure 7 and Figure 8 In the middle, a heating tube 36 connected to an external circuit is fixed on the left side of the lower clamping platform 33 and the upper clamping platform 34. The heating tube 36 can preheat the steel strip. At the same time, a friction plate 37 is provided on the inner side of the lower clamping platform 33 and the upper clamping platform 34. The tilting mechanism on the left side of the friction plate 37 facilitates the contact between the scraping strip 38 provided on the surface of the friction plate 37 and the surface of the steel strip, so as to scrape off impurities on the surface of the steel strip. The tilting structure of the scraping strip 38 can make the scraped impurities automatically slide to both sides. At the same time, a flat scraping plate 39 is provided on the right side of the friction plate 37 to clean the residual oil on the surface of the steel strip, so as to improve the cleanliness of the steel strip surface and reduce the center deviation during extrusion molding.

[0061] At the same time, if Figure 7 In the figure, a drop groove 318 is integrated at the bottom of the lower clamping platform 33. The bottom surface of the lower clamping platform 33 is connected to the drop groove 318 through the friction plate 37, so that the scraped impurities can fall into the inside of the drop groove 318. Through the inclined structure of the bottom surface of the drop groove 318, the impurities can be discharged and collected through the recovery pipe 319.

[0062] Among them: Figure 1 、 Figure 2 and Figure 3 In the extrusion molding area, there are a primary deformation rack 5, a first transverse extrusion rack 6, a vertical extrusion rack 7 and a second transverse extrusion rack 8. The frame structure arrangement of the primary deformation rack 5 and the vertical extrusion rack 7 is the same as that of the first feeding rack 2. The upper extrusion roller 51 and the lower extrusion roller 52 that can be adjusted for lifting are provided on the inner side of the primary deformation rack 5. The vertical extrusion rack 7 is provided on the inner side of the vertical extrusion wheel 7 for vertically extruding the welding material.

[0063] In a specific application scenario, the primary deformation rack 5 and the vertical extrusion rack 7 are arranged with the same frame structure as the first feed rack 2, that is, the primary deformation rack 5 and the vertical extrusion rack 7 are internally provided with a first slider 23 and a second slider 24 that can also be raised and lowered, so as to facilitate height adjustment of the upper extrusion roller 51 and the lower extrusion roller 52 or the vertical extrusion wheel 71 installed on the inner side thereof, so as to maintain the center stability of the steel strip when deforming toward the welded pipe during extrusion forming, reduce the distortion of the weld, and thus improve the welding efficiency and forming quality.

[0064] Among them: Figure 1 、 Figure 2 、 Figure 3 and Figure 9 The frame structure of the first transverse extrusion rack 6 and the second transverse extrusion rack 8 is the same as the frame structure of the pretreatment rack 3. A fifth adjusting rod 61 is vertically rotatably installed on the inner side of the first transverse extrusion rack 6. The outer side of the fifth adjusting rod 61 is connected to the fourth slider 62 and the fifth slider 63. The inner sides of the fourth slider 62 and the fifth slider 63 are respectively connected to the slide rod 65 and the sixth adjusting rod 64. The outer side of the sixth adjusting rod 64 is connected to the first transverse extrusion wheel 66 located between the sixth adjusting rod 64 and the slide rod 65. The top of the first transverse extrusion wheel 66 is slidably connected to the slide rod 65. The inner side of the second transverse extrusion rack 8 is provided with a second transverse extrusion wheel 81 arranged in the same manner as the first transverse extrusion wheel 66;

[0065] In a specific application scenario, by setting the same outer frame of the first transverse extrusion rack 6, the second transverse extrusion rack 8 and the pretreatment rack 3, the fourth slider 62 and the fifth slider 63 can be height-adjusted synchronously by rotating the fifth adjusting rod 61 having a threaded structure from top to bottom inside the first transverse extrusion rack 6, thereby adjusting the height position of the sixth adjusting rod 64 and the slide bar 65. The sixth adjusting rod 64 is driven to rotate by a motor installed inside the fifth slider 63, and the spacing position of the first transverse extrusion wheel 66 is adjusted by the opposite threaded structures at both ends of the sixth adjusting rod 64, thereby facilitating the position adjustment of the first transverse extrusion wheel 66 and the second transverse extrusion wheel 81 for extrusion molding.

[0066] Among them: Figure 1 、 Figure 2 、 Figure 3 and Figure 6In the embodiment, the first feeding rack 2, the pretreatment rack 3, the second feeding rack 4, the primary deformation rack 5, the first transverse extrusion rack 6, the vertical extrusion rack 7 and the second transverse extrusion rack 8 are symmetrically provided with limit holes 10 at the bottom, and the interior of the limit holes 10 is connected with a support rod 101 for adjusting the distance between the first feeding rack 2, the pretreatment rack 3, the second feeding rack 4, the primary deformation rack 5, the first transverse extrusion rack 6, the vertical extrusion rack 7 and the second transverse extrusion rack 8. The connection between the limit holes 10 and the support rod 101 is a threaded connection, and the threads at both ends of the support rod 101 are screwed in opposite directions;

[0067] In a specific application scenario, the bottoms of the first feeding rack 2, the pretreatment rack 3, the second feeding rack 4, the primary deformation rack 5, the first transverse extrusion rack 6, the vertical extrusion rack 7 and the second transverse extrusion rack 8 are slidably connected to the inner side of the limiting side plate 17 fixed on the surface of the mounting seat 16. The spacing positions between the first feeding rack 2, the pretreatment rack 3, the second feeding rack 4, the primary deformation rack 5, the first transverse extrusion rack 6, the vertical extrusion rack 7 and the second transverse extrusion rack 8 can be adjusted by sliding, and the support rod 101 is connected to the bottom of the first feeding rack 2. By rotating the support rod 101, The spacing position between the first feed rack 2, the pretreatment rack 3, the second feed rack 4, the primary deformation rack 5, the first transverse extrusion rack 6, the vertical extrusion rack 7 and the second transverse extrusion rack 8 is quickly adjusted, and the end of the limiting side plate 17 is installed with a limiting side plate 18, and the interior of the limiting side plate 18 is correspondingly provided with a limiting hole 10, which can adjust and fix the spacing between the first feed rack 2 and the second transverse extrusion rack 8 and the limiting side plate 18, changing the traditional method of fixing the frame structure with bolts, and solving the problem that the fixed position of the existing frame is fixed and the spacing size cannot be adjusted arbitrarily.

[0068] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention; the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field. In addition, the directional nouns such as up, down, left, right, front, and back in the text only represent their relative positions rather than absolute positions.

[0069] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0070] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A straight seam welded pipe welding and forming unit, comprising: A fixed base frame (1) is arranged on the production line, and a feeding, pre-processing, extrusion and welding area is arranged above the fixed base frame (1), the welding area is provided with a welding frame (9) fixed to the end of the fixed base frame (1), the inner side of the welding frame (9) is provided with a limiting wheel (91) for limiting the position of the welded pipe, and a laser welding gun (92) for welding is arranged in the middle of the welding frame (9); The invention is characterized in that: a mounting seat (16) is fixed on the top surface of the fixed base frame (1), and limiting side plates (17) are symmetrically integrated on the front and rear sides of the top surface of the mounting seat (16), and the pretreatment area and the extrusion area are respectively arranged on the left and right sides of the mounting seat (16); The pretreatment area comprises a first feed rack (2), a pretreatment rack (3) and a second feed rack (4); two sets of height-adjustable flat rollers (26) are provided on the inner sides of the first feed rack (2) and the second feed rack (4); the pretreatment rack (3) is arranged between the first feed rack (2) and the second feed rack (4); and a pretreatment mechanism for surface treatment of the welding material is provided on the inner side of the pretreatment rack (3); The first feed rack (2), the pretreatment rack (3) and the second feed rack (4) are all slidably mounted on the inner side of the limiting side plate (17); limiting holes (10) are symmetrically provided at the bottom of the first feed rack (2), the pretreatment rack (3) and the second feed rack (4); support rods (101) are connected to the inside of the limiting holes (10) for adjusting the distance between the first feed rack (2), the pretreatment rack (3) and the second feed rack (4).

2. The straight seam welded pipe welding and forming unit according to claim 1, characterized in that: The feeding area is arranged on the left side of the fixed base frame (1), and the feeding area includes a fixed side plate (11) fixed to the left end of the fixed base frame (1), the inner side of the fixed side plate (11) is rotatably connected to a rotating shaft (12), the outer side of the rotating shaft (12) is integrally welded with a cantilever (13), a support rod (14) is fixed to the inner side of the top end of the cantilever (13), and a limiting slider (15) is slidably installed on the outer side of the support rod (14), and the limiting slider (15) is screwed into the outer side of the support rod (14) by its internal bolt to limit the steel strip.

3. The straight seam welded pipe welding and forming unit according to claim 1, characterized in that: An inner partition (21) is symmetrically and vertically fixedly installed on the inner side of the first feeding rack (2), and a first adjusting rod (25) is vertically arranged between the inner partition (21) and the inner side wall of the first feeding rack (2). A sliding groove (22) is provided inside the inner partition (21), and a first slider (23) and a second slider (24) are provided between the inner partition (21) and the first feeding rack (2) and are connected to the inner side of the sliding groove (22) in an upward and downward manner. The second slider (24) is correspondingly connected to the first adjusting rod (25), and the bottom end of the first adjusting rod (25) passes through the first slider (23) and is rotatably connected to the bottom surface of the first feeding rack (2). Flat rollers (26) are installed on the inner sides of the first slider (23) and the second slider (24).

4. The straight seam welded pipe welding and forming unit according to claim 3, characterized in that: Fixed blocks (27) are fixedly installed on the left and right sides of the bottom of the first sliding block (23), and a pushing plate (28) is provided below the fixed block (27) and is connected to the first feed rack (2) and the inner partition (21) in a sliding manner. The pushing plate (28) is internally connected to a second adjusting rod (29) with two ends of the threaded rod screwed in opposite directions.

5. The straight seam welded pipe welding and forming unit according to claim 1, characterized in that: A third adjusting rod (31) is symmetrically and rotatably installed on the inner side of the pretreatment material rack (3), the outer side of the third adjusting rod (31) is connected to a third slider (32) slidably connected to the inner side of the pretreatment material rack (3), the inner side of the third slider (32) is rotatably connected to a lower clamping platform (33), an upper clamping platform (34) is telescopically installed above the lower clamping platform (33), and limiting rollers (35) are provided at the left and right ends of the lower clamping platform (33) and the upper clamping platform (34), a heating tube (36) is provided on the left side of the middle of the lower clamping platform (33), a friction plate (37) is provided on the right side of the middle of the lower clamping platform (33), the inner side of the friction plate (37) is connected to a connecting rod (310) fixed between the lower clamping platform (33), and the top of the connecting rod (310) is provided with a first tensioning spring (311); The surface of the friction plate (37) is provided with a protruding scraping strip (38), and the scraping strip (38) is inclined from the center to both sides. A flat scraping plate (39) is fixed to the right end of the surface of the friction plate (37). A through groove (317) is provided at the bottom of the lower clamping platform (33). A drop groove (318) is provided on the bottom surface of the lower clamping platform (33) in an integrated manner. The bottom end of the drop groove (318) is connected to a recovery pipe (319).

6. The straight seam welded pipe welding and forming unit according to claim 5, characterized in that: A first convex plate (312) is fixed on the side of the lower clamping platform (33) protruding outward, and a fourth adjustment rod (313) is fixed above the first convex plate (312). A second convex plate (315) is fixed on the side of the upper clamping platform (34) protruding outward, and the top end of the fourth adjustment rod (313) passes through the second convex plate (315). The top end of the fourth adjustment rod (313) is connected to a fixing nut (316), and the outer side of the fourth adjustment rod (313) is provided with a second tension spring (314) connected between the first convex plate (312) and the second convex plate (315).

7. The straight seam welded pipe welding and forming unit according to claim 1, characterized in that: The extrusion molding area includes a primary deformation rack (5), a first transverse extrusion rack (6), a vertical extrusion rack (7) and a second transverse extrusion rack (8). The frame structure arrangement of the primary deformation rack (5) and the vertical extrusion rack (7) is the same as the frame structure arrangement of the first feed rack (2). The inner side of the primary deformation rack (5) is provided with an upper extrusion roller (51) and a lower extrusion roller (52) that can be adjusted to move up and down. The inner side of the vertical extrusion rack (7) is provided with a vertical extrusion wheel (71) for vertically extruding the welding material.

8. The straight seam welded pipe welding and forming unit according to claim 7, characterized in that: The frame structure of the first transverse extrusion rack (6) and the second transverse extrusion rack (8) is the same as the frame structure of the pretreatment rack (3). A fifth adjusting rod (61) is vertically rotatably installed on the inner side of the first transverse extrusion rack (6). The outer side of the fifth adjusting rod (61) is connected to a fourth slider (62) and a fifth slider (63). The inner sides of the fourth slider (62) and the fifth slider (63) are respectively connected to a slide rod (65) and a sixth adjusting rod (64). The outer side of the sixth adjusting rod (64) is connected to a first transverse extrusion wheel (66) located between the sixth adjusting rod (64) and the slide rod (65). The top of the first transverse extrusion wheel (66) is slidably connected to the slide rod (65).

9. The straight seam welded pipe welding and forming unit according to claim 8, characterized in that: A second transverse extrusion wheel (81) arranged in the same manner as the first transverse extrusion wheel (66) is provided on the inner side of the second transverse extrusion rack (8).

10. The straight seam welded pipe welding and forming unit according to claim 7, characterized in that: The bottoms of the first feed rack (2), the pretreatment rack (3), the second feed rack (4), the primary deformation rack (5), the first transverse extrusion rack (6), the vertical extrusion rack (7) and the second transverse extrusion rack (8) are all symmetrically provided with limiting holes (10), and the limiting holes (10) are connected to the support rod (101) in a threaded connection, with the threads at both ends of the support rod (101) being screwed in opposite directions.

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