Round pipe forming device and automatic pipe manufacturing equipment

Abstract

The utility model provides a round pipe forming device and automatic pipe manufacturing equipment. The round pipe forming device comprises a rack, a plurality of mounting pressure-bearing seat assemblies and a plurality of forming assemblies. The multiple mounting pressure-bearing seat assemblies are arranged on the rack at intervals, each mounting pressure-bearing seat assembly comprises two oppositely-arranged mounting pressure-bearing seats, and each mounting pressure-bearing seat comprises a base body, a lead screw rotating part, a lifting seat and a fastening nut part; the base body is provided with a lifting sliding groove and a threaded hole which communicate with each other, and the fastening nut piece is used for being locked and abutting against the base body when the lifting base slides to the preset height position. The round pipe forming device is simple and practical in structure and has good structural compactness, especially when the fastening nut piece is screwed down and the lead screw rotating piece is positioned and locked, the installation pressure-bearing seat can provide a good pressure-bearing effect, and therefore the problem of installation deviation of the upper horizontal roller and the lower horizontal roller is effectively avoided, and the production efficiency is improved. And finally, the subsequent forming and laser welding quality of the tubular coiled material is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of welded pipe manufacturing, in particular to a round pipe forming device and automatic pipe making equipment. Background Art

[0002] In the round tube forming process, multiple sets of forming rollers on a pipe welding machine typically work together to extrude the coiled material into a tubular coil, and then laser weld the joints of the tubular coil. The forming rollers typically have a smooth cylindrical or grooved surface and are the primary forming element involved in extruding the coiled material.

[0003] At present, forming rollers are mainly divided into horizontal rollers and vertical rollers, and horizontal rollers and vertical rollers are usually distributed along the cold bending extrusion forming production line of the welding pipe machine; among them, the two ends of the rotating shaft of the two horizontal rollers need to be respectively mounted on two oppositely arranged pressure-bearing mounting seats. When the coil passes through the cold bending extrusion forming production line, it is necessary to keep the forming gap between the two horizontal rollers unchanged, so the pressure-bearing mounting seat needs to withstand the large forming pressure from the two horizontal rollers. Moreover, due to the poor structural compactness of the pressure-bearing mounting seat in the prior art, the pressure-bearing effect of the pressure-bearing mounting seat is not ideal, which easily causes a horizontal roller to be installed out of position, resulting in different sizes of the forming gaps between the two ends of the two horizontal rollers, which ultimately affects the subsequent forming and laser welding quality of the tubular coil. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a round tube forming device and automatic tube making equipment with good structural compactness and pressure-bearing effect, thereby effectively avoiding the problem of installation deviation of horizontal rollers.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A round tube forming device and automatic tube making equipment, comprising:

[0007] frame;

[0008] The lifting seat is located in the lifting slot and is slidably connected to the base body, and the lifting seat is located in the lifting slot and is slidably connected to the base body.

[0009] Multiple forming assemblies, multiple forming assemblies are arranged in a one-to-one correspondence with multiple mounting pressure seat assemblies, each forming assembly includes an upper horizontal roller and a lower horizontal roller; the upper horizontal roller is rotatably connected between the lifting seats of the two mounting pressure seats of the corresponding mounting pressure seat assembly, and the lower horizontal roller is rotatably connected between the base bodies of the two mounting pressure seats of the corresponding mounting pressure seat assembly; one end of the screw rotating member extends to the lifting slot and is rotatably connected to the lifting seat, and the lower horizontal roller is located below the upper horizontal roller, and a forming gap is separated from the upper horizontal roller and the lower horizontal roller, and the forming gap is used for forming extruded coils.

[0010] In one embodiment, a rotation gripping portion is provided at the other end of the screw rotating member, and the rotation gripping portion is used to drive the screw rotating member to rotate.

[0011] In one embodiment, the lifting slots run through both sides of the base body.

[0012] In one embodiment, a first sliding clamp is installed on the side of the lifting seat adjacent to the upper horizontal roller, and a second sliding clamp is installed on the side of the lifting seat away from the upper horizontal roller, so that a first sliding groove opening is formed at one end of the lifting seat and a second sliding groove opening is formed at the other end of the lifting seat, and the first sliding groove opening and the second sliding groove opening are respectively used for sliding connection with the base body.

[0013] In one embodiment, the round tube forming device also includes a horizontal correction component, which includes an infrared transmitter and an infrared receiver; the infrared transmitter is fixedly mounted on the top of the lifting seat of one pressure-bearing seat of the corresponding pressure-bearing seat assembly, and the infrared receiver is fixedly mounted on the top of the lifting seat of the other pressure-bearing seat of the corresponding pressure-bearing seat assembly, and the transmitting end of the infrared transmitter and the receiving end of the infrared receiver are arranged opposite to each other.

[0014] In one embodiment, the horizontal correction component further includes a buzzer, and the infrared transmitter and the infrared receiver are electrically connected to the buzzer respectively.

[0015] In one embodiment, the bottom of the base body is connected to the frame via bolts.

[0016] In one embodiment, the multiple forming assemblies include a first forming assembly and a second forming assembly arranged in sequence along the coil conveying direction, the outer surface forming width of the upper horizontal roller of the first forming assembly is smaller than the outer surface forming width of the upper horizontal roller of the second forming assembly, and the outer surface forming width of the lower horizontal roller of the second forming assembly is smaller than the outer surface forming width of the lower horizontal roller of the first forming assembly.

[0017] In one embodiment, the base body is an integrally formed structure; and / or,

[0018] The round tube forming device also includes a vertical arc pressing component, a horizontal arc pressing component and a laser welding machine. Multiple forming components, the vertical arc pressing components, the horizontal arc pressing components and the laser welding machine are arranged on the frame in sequence along the coil conveying direction. The vertical arc pressing component is used to extrude the round tube semi-finished product in the vertical direction, the horizontal arc pressing component is used to extrude the round tube semi-finished product after vertical extrusion in the horizontal direction, and the laser welding machine is used to weld and shape the round tube after horizontal extrusion.

[0019] An automatic pipe making device comprises an unwinding machine and the round pipe forming device described in any one of the above embodiments.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] Since the upper horizontal roller is rotatably connected between the lifting seats of the two pressure-bearing mounting seats of the corresponding pressure-bearing mounting seat assembly, and the screw rotating member is inserted into the threaded hole and screwed to the base body, one end of the screw rotating member also extends to the lifting slide and is rotatably connected to the lifting seat, so that by driving the screw rotating member to rotate, the lifting seat can be driven to slide to a predetermined height relative to the base body to adjust the size of the forming gap between the upper horizontal roller and the lower horizontal roller, so that the forming gap between the upper horizontal roller and the lower horizontal roller is consistent in size, and then the tightening nut is tightened to lock it against the base body. The circular tube forming device of the utility model has a simple and practical structure and good structural compactness. In particular, when the tightening nut is tightened, after the screw rotating member is positioned and locked, the pressure-bearing mounting seat can provide a good pressure-bearing effect, thereby effectively avoiding the problem of installation deviation between the upper horizontal roller and the lower horizontal roller, and ultimately ensuring that the quality of subsequent forming and laser welding of the tubular coil is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic structural diagram of a round tube forming device in one embodiment;

[0024] Figure 2 for Figure 1 The structural schematic diagram of the round tube forming device shown;

[0025] Figure 3 for Figure 1 The structural schematic diagram of the round tube forming device shown;

[0026] Figure 4 for Figure 1 A schematic structural diagram of the lifting and locking assembly of the round tube forming device shown;

[0027] Figure 5 for Figure 1 A partially enlarged schematic diagram of the round tube forming device shown;

[0028] Figure 6 for Figure 1 A partially enlarged schematic diagram of the round tube forming device shown;

[0029] Figure 7 It is a schematic diagram of the structure of the vertical arc pressing component, the horizontal arc pressing component and the laser welding machine;

[0030] Figure 8 It is a structural diagram of the shaping and cutting machine;

[0031] Figure markings: round tube forming device 10; frame 100; pressure bearing seat installation assembly 200; pressure bearing seat installation 210; base body 211; lifting slide 2101; screw rotating part 212; rotating gripping part 2121; lifting seat 213; first sliding clamp 2131; second sliding clamp 2132; first slide groove opening 2102; second slide groove opening 2103; fastening nut part 214; forming assembly 300; upper horizontal roller 310; lower horizontal roller 320; forming gap 301; horizontal correction assembly 400; infrared transmitter 410; infrared receiver 420. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] See also Figures 1 to 6 In order to better understand the round tube forming device 10 of the present application, the round tube forming device 10 is further explained below:

[0036] The round tube forming device 10 according to one embodiment includes a frame 100 , a plurality of mounting pressure seat assemblies 200 , and a plurality of forming assemblies 300 . The plurality of mounting pressure seat assemblies 200 are arranged on the frame 100 at intervals, and each of the mounting pressure seat assemblies 200 includes two mounting pressure seats 210 arranged opposite to each other, and each of the mounting pressure seat 210 includes a base body 211, a screw rotating member 212, a lifting seat 213 and a fastening nut member 214; the base body 211 is provided with a connected lifting slot 2101 and a threaded hole (not shown in the figure), the screw rotating member 212 is passed through the threaded hole (not shown) and is screwed to the base body 211, the fastening nut member 214 is located at the top of the base body 211, the fastening nut member 214 is sleeved on the external threaded portion of the screw rotating member 212 and is screwed to the screw rotating member 212, the lifting seat 213 is located in the lifting slot 2101 and is slidably connected to the base body 211, and the fastening nut member 214 is used to slide the lifting seat 213 to When at a predetermined height position, it is locked against the base body 211; multiple forming assemblies 300 are arranged one by one in multiple mounting pressure seat assemblies 200, and each forming assembly 300 includes an upper horizontal roller 310 and a lower horizontal roller 320; the upper horizontal roller 310 is rotatably connected between the lifting seats 213 of the two mounting pressure seats 210 of the corresponding mounting pressure seat assembly 200, and the lower horizontal roller 320 is rotatably connected between the base bodies 211 of the two mounting pressure seats 210 of the corresponding mounting pressure seat assembly 200; one end of the screw rotating member 212 extends to the lifting slide 2101 and is rotatably connected to the lifting seat 213, and the lower horizontal roller 320 is located below the upper horizontal roller 310, and a forming gap 301 is separated between the upper horizontal roller 310 and the lower horizontal roller 320, and the forming gap 301 is used for forming extruded coils.

[0037] The cam 210 is connected to the upper and lower parts of the cam 211 by the screw threaded hole 2101, and the cam 211 is connected to the lower part of the cam 211 by the screw threaded hole 2101. The cam 210 is connected to the upper and lower parts of the cam 211 by the screw threaded hole 2101. The cam 210 is connected to the upper and lower parts of the cam 211 by the screw threaded hole 2101. The cam 210 is connected to the upper and lower parts of the cam 211 by the screw threaded hole 2101. The cam 210 is connected to the upper and lower parts of the cam 211 by the screw threaded hole 2101. The cam 210 is connected to the upper and lower parts of the cam 211 by the screw threaded hole 2101. The cam 210 is connected to the upper and lower parts of the cam 211 by the screw threaded hole 2101. Figure 2 As shown in FIG, the nut 214 is then tightened to lock it against the base body 211. The round tube forming device 10 of the present invention is simple and practical in structure, and has good structural compactness. In particular, when the nut 214 is tightened, the screw rotating member 212 is positioned and locked, and the pressure bearing seat 210 is installed to provide a good pressure bearing effect, thereby effectively avoiding the problem of large deviation in the left and right forming gaps 301 caused by the installation deviation of the upper horizontal roller 310 and the lower horizontal roller 320, and ultimately ensuring that the quality of subsequent forming and laser welding of the tubular coil is not affected.

[0038] It should be noted that the coil material is selected according to the diameter of the pipe, and the incoming material is formed into a round pipe through the pipe making equipment.

[0039] like Figure 1 and Figure 2 As shown, in one embodiment, the other end of the screw rotating member 212 is provided with a rotating grip 2121, and the rotating grip 2121 is used to drive the screw rotating member 212 to rotate. In this way, the user can drive the rotating grip 2121 to rotate to control one end of the screw rotating member 212 to rotate with the lifting seat 213, thereby driving the lifting seat 213 to slide up and down relative to the base body 211 to a predetermined height, so as to adjust the size of the forming gap 301 between the upper horizontal roller 310 and the lower horizontal roller 320, so that the size of the forming gap 301 between the upper horizontal roller 310 and the lower horizontal roller 320 is consistent.

[0040] like Figure 1 As shown, in one embodiment, the lifting slots 2101 run through both sides of the base body 211. This facilitates the processing of the base body 211 and also facilitates the disassembly or maintenance of the pressure bearing seat 210.

[0041] like Figure 1 、 Figure 2 and Figure 4 As shown, in one embodiment, a first sliding card plate 2131 is installed on the side of the lifting seat 213 adjacent to the upper horizontal roller 310, and a second sliding card plate 2132 is installed on the side of the lifting seat 213 away from the upper horizontal roller 310, so that a first sliding groove opening 2102 is formed at one end of the lifting seat 213, and a second sliding groove opening 2103 is formed at the other end of the lifting seat 213, and the first sliding groove opening 2102 and the second sliding groove opening 2103 are respectively used for sliding connection with the base body 211.

[0042] It can be understood that the first sliding groove opening 2102 and the second sliding groove opening 2103 can better ensure the smooth sliding of the lifting seat 213 during the lifting process.

[0043] It should be noted that, in this embodiment, the first sliding clamp 2131 and the second sliding clamp 2132 are fixedly mounted on both sides of the lifting seat 213 by means of bolt connection. In this way, the tightness of the sliding of the lifting seat 213 can be adjusted by adjusting the tightness of the bolts, and the disassembly, assembly and maintenance of the lifting seat 213 are also facilitated.

[0044] Furthermore, the portion where the upper horizontal roller 310 is rotatably connected to the lifting seat 213, and the portion where the lower horizontal roller 320 is rotatably connected to the base body 211 are both installed with bearings, thereby ensuring the rationality of the installation structure of the pressure seat 210.

[0045] like Figure 1 、 Figure 5 and Figure 6 As shown, in one embodiment, the round tube forming device 10 further includes a horizontal correction assembly 400, which includes an infrared transmitter 410 and an infrared receiver 420. The infrared transmitter 410 is fixedly mounted on the top of the lifting seat 213 of one pressure-bearing seat 210 of the corresponding pressure-bearing seat assembly 200, and the infrared receiver 420 is fixedly mounted on the top of the lifting seat 213 of the other pressure-bearing seat 210 of the corresponding pressure-bearing seat assembly 200. The transmitting end of the infrared transmitter 410 and the receiving end of the infrared receiver 420 are arranged opposite each other. In one embodiment, the horizontal correction assembly 400 further includes a buzzer, and the infrared transmitter 410 and the infrared receiver 420 are respectively electrically connected to the buzzer.

[0046] It can be understood that when the transmitting end of the infrared transmitter 410 and the receiving end of the infrared receiver 420 are on the same horizontal line, the light signal reception between the infrared transmitter 410 and the infrared receiver 420 is normal, and the buzzer (not shown in the figure) remains silent at this time; when the lifting seat 213 at one end of one of the screw rotating parts 212 slides relative to the base body 211, thereby driving one of the infrared transmitters 410 or the infrared receiver 420 to rise and fall, so that the transmitting end of the infrared transmitter 410 and the receiving end of the infrared receiver 420 are not on the same horizontal line, the buzzer (not shown in the figure) emits a warning sound to remind the staff that the screw rotating part 212 needs to be adjusted.

[0047] like Figure 1 As shown, in one embodiment, the bottom of the base body 211 is connected to the frame 100 by bolts.

[0048] like Figures 1 to 3 As shown, in one embodiment, the multiple forming assemblies 300 include a first forming assembly 300 and a second forming assembly 300 arranged in sequence along the coil conveying direction, the outer surface forming width of the upper horizontal roller 310 of the first forming assembly 300 is smaller than the outer surface forming width of the upper horizontal roller 310 of the second forming assembly 300, and the outer surface forming width of the lower horizontal roller 320 of the second forming assembly 300 is smaller than the outer surface forming width of the lower horizontal roller 320 of the first forming assembly 300.

[0049] It can be understood that since the outer surface forming width of the upper horizontal roller 310 of the first forming component 300 is smaller than the outer surface forming width of the upper horizontal roller 310 of the second forming component 300, the outer surface forming width of the lower horizontal roller 320 of the second forming component 300 is smaller than the outer surface forming width of the lower horizontal roller 320 of the first forming component 300, that is, toward the end direction of the cold bending extrusion forming production line of the welding pipe machine, the cross-section of the forming gap 301 between each group of upper and lower horizontal rollers gradually becomes an arc shape with both ends raised and converged toward the middle, so that the coil gradually deforms into the shape of a tubular coil.

[0050] like Figure 1 As shown, in one embodiment, the base body 211 is an integrally formed structure. This provides the base body 211 with good structural strength, thereby ensuring that the pressure-bearing seat 210 can provide a good pressure-bearing effect, effectively preventing the upper horizontal roller 310 and the lower horizontal roller 320 from being misaligned during installation, and ultimately ensuring that the quality of subsequent forming and laser welding of the tubular coil is not affected.

[0051] like Figure 1 、 Figure 7 and Figure 8As shown, in one embodiment, the round tube forming device 10 also includes a vertical arc pressing component 500, a horizontal arc pressing component 600 and a laser welding machine 700. Multiple forming components 300, the vertical arc pressing components 500, the horizontal arc pressing components 600 and the laser welding machine 700 are arranged in sequence on the frame 100 along the coil conveying direction. The vertical arc pressing component 500 is used to vertically extrude the semi-finished round tube, the horizontal arc pressing component 600 is used to horizontally extrude the semi-finished round tube after vertical extrusion, and the laser welding machine 700 is used to weld and shape the round tube after horizontal extrusion.

[0052] It can be understood that the coil is gradually formed into a tubular coil under the joint forming and extrusion action of multiple forming components 300, vertical arc pressing components 500, and horizontal arc pressing components 600; therefore, when the tubular coil passes through the laser welding station, the laser of the laser welding machine 700 emits a high-energy laser beam, so that the laser beam is concentrated at the weld seam (i.e., the interface) of the tubular coil, thereby automatically welding the weld seam of the tubular coil to effectively eliminate the weld seam.

[0053] In one embodiment, a suction machine 800 is installed adjacent to the laser of the laser welding machine 700 to extract smoke and dust around the weld. This effectively removes harmful smoke and dust generated during welding, preventing harm to workers and contamination of the workshop environment.

[0054] Furthermore, a chiller (not shown) and a shaping and cutting machine 900 are sequentially arranged along the direction of coil conveying. In this way, after the tubular coil passes through the laser welding station, that is, after the semi-finished round tube is laser welded, the coolant is sprayed onto the weld where the laser welding has been completed through the outlet pipe of the chiller (not shown), thereby effectively reducing the temperature at the weld, reducing the thermal stress of the weld and the surrounding materials, avoiding deformation or cracking caused by temperature changes, and thus improving the overall quality of laser welding. At the same time, after the finished round tube is cooled by the coolant, the finished round tube is conveyed to the shaping and cutting machine 900 for final shaping to ensure that the cross section of the finished round tube has a good roundness, and then the finished round tube is cut at a fixed distance by the shaping and cutting machine 900, thus completing the blanking.

[0055] The present application also provides an automatic pipe making device, comprising an unwinding machine and the round pipe forming device 10 described in any one of the above embodiments.

[0056] In this embodiment, since the upper horizontal roller is rotatably connected between the lifting seats of the two pressure-bearing mounting seats of the corresponding pressure-bearing mounting seat assembly, and the screw rotating member is disposed in the threaded hole and threadedly connected to the base body, and one end of the screw rotating member also extends into the lifting slot and is rotatably connected to the lifting seat, the screw rotating member can be driven to rotate, thereby driving the lifting seat to slide to a predetermined height relative to the base body to adjust the size of the forming gap between the upper horizontal roller and the lower horizontal roller, so that the forming gap between the upper horizontal roller and the lower horizontal roller is consistent in size, and then the tightening nut is tightened to lock it against the base body. The above-mentioned automatic pipe making equipment has a simple and practical structure and a good structural compactness. In particular, when the tightening nut is tightened, the screw rotating member is positioned and locked, and the pressure-bearing mounting seat can provide a good pressure-bearing effect, thereby effectively avoiding the problem of installation deviation between the upper horizontal roller and the lower horizontal roller, and ultimately ensuring that the quality of subsequent forming and laser welding of the tubular coil is not affected.

[0057] Compared with the prior art, the present invention has at least the following advantages:

[0058] Since the upper horizontal roller is rotatably connected between the lifting seats of the two pressure-bearing mounting seats of the corresponding pressure-bearing mounting seat assembly, and the screw rotating member is inserted into the threaded hole and screwed to the base body, one end of the screw rotating member also extends to the lifting slide and is rotatably connected to the lifting seat, so that by driving the screw rotating member to rotate, the lifting seat can be driven to slide to a predetermined height relative to the base body to adjust the size of the forming gap between the upper horizontal roller and the lower horizontal roller, so that the forming gap between the upper horizontal roller and the lower horizontal roller is consistent in size, and then the tightening nut is tightened to lock it against the base body. The circular tube forming device of the utility model has a simple and practical structure and good structural compactness. In particular, when the tightening nut is tightened, after the screw rotating member is positioned and locked, the pressure-bearing mounting seat can provide a good pressure-bearing effect, thereby effectively avoiding the problem of installation deviation between the upper horizontal roller and the lower horizontal roller, and ultimately ensuring that the quality of subsequent forming and laser welding of the tubular coil is not affected.

[0059] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A round tube forming device, characterized in that: include: frame; The lifting seat is located in the lifting slot and is slidably connected to the base body, and the lifting seat is located in the lifting slot and is slidably connected to the base body. Multiple forming assemblies, multiple forming assemblies are arranged in a one-to-one correspondence with multiple mounting pressure seat assemblies, each forming assembly includes an upper horizontal roller and a lower horizontal roller; the upper horizontal roller is rotatably connected between the lifting seats of the two mounting pressure seats of the corresponding mounting pressure seat assembly, and the lower horizontal roller is rotatably connected between the base bodies of the two mounting pressure seats of the corresponding mounting pressure seat assembly; one end of the screw rotating member extends to the lifting slot and is rotatably connected to the lifting seat, and the lower horizontal roller is located below the upper horizontal roller, and a forming gap is separated from the upper horizontal roller and the lower horizontal roller, and the forming gap is used for forming extruded coils.

2. The round tube forming device according to claim 1, characterized in that: The other end of the screw rotating member is provided with a rotation gripping portion, and the rotation gripping portion is used to drive the screw rotating member to rotate.

3. The round tube forming device according to claim 1, characterized in that: The lifting slots run through both sides of the base body.

4. The round tube forming device according to claim 1, characterized in that: A first sliding card is installed on the side of the lifting seat adjacent to the upper horizontal roller, and a second sliding card is installed on the side of the lifting seat away from the upper horizontal roller, so that a first sliding groove opening is formed at one end of the lifting seat and a second sliding groove opening is formed at the other end of the lifting seat, and the first sliding groove opening and the second sliding groove opening are respectively used for sliding connection with the base body.

5. The round tube forming device according to claim 1, characterized in that: The round tube forming device also includes a horizontal correction component, which includes an infrared transmitter and an infrared receiver; the infrared transmitter is fixedly mounted on the top of the lifting seat of one pressure-bearing seat of the corresponding pressure-bearing seat assembly, and the infrared receiver is fixedly mounted on the top of the lifting seat of the other pressure-bearing seat of the corresponding pressure-bearing seat assembly, and the transmitting end of the infrared transmitter and the receiving end of the infrared receiver are arranged opposite to each other.

6. The round tube forming device according to claim 5, characterized in that: The horizontal correction component further includes a buzzer, and the infrared transmitter and the infrared receiver are electrically connected to the buzzer respectively.

7. The round tube forming device according to claim 1, characterized in that: The bottom of the base body is connected to the frame through bolts.

8. The round tube forming device according to claim 1, characterized in that: The multiple forming assemblies include a first forming assembly and a second forming assembly arranged in sequence along the coil conveying direction. The outer surface forming width of the upper horizontal roller of the first forming assembly is smaller than the outer surface forming width of the upper horizontal roller of the second forming assembly, and the outer surface forming width of the lower horizontal roller of the second forming assembly is smaller than the outer surface forming width of the lower horizontal roller of the first forming assembly.

9. The round tube forming device according to claim 1, characterized in that: The base body is an integrally formed structure; and / or, The round tube forming device also includes a vertical arc pressing component, a horizontal arc pressing component and a laser welding machine. Multiple forming components, the vertical arc pressing components, the horizontal arc pressing components and the laser welding machine are arranged on the frame in sequence along the coil conveying direction. The vertical arc pressing component is used to extrude the round tube semi-finished product in the vertical direction, the horizontal arc pressing component is used to extrude the round tube semi-finished product after vertical extrusion in the horizontal direction, and the laser welding machine is used to weld and shape the round tube after horizontal extrusion.

10. An automatic pipe making device, characterized in that: The invention comprises an unwinding machine and a round tube forming device according to any one of claims 1 to 9.

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