Support mechanism for a spiral pipe forming machine

Abstract

The application relates to the field of spiral welded pipe forming, in particular to a supporting mechanism of a spiral welded pipe forming machine, the forming machine comprising a supporting platform, the supporting mechanism comprising a first supporting rod fixedly connected with the upper surface of the supporting platform, the first supporting rod being integrally formed with a second supporting rod, the end of the second supporting rod being fixedly connected with at least three fixed rods which are evenly distributed in a circle, each fixed rod being connected with a circular connecting rod, and each connecting rod being rotationally connected with an inner supporting roller. The application has the effect of reducing the deformation of the spiral welded pipe and further reducing the influence on the roundness of the spiral welded pipe.

Description

Technical Field

[0001] This application relates to the field of spiral welded pipe forming, and in particular to a support mechanism for a spiral welded pipe forming machine. Background Technology

[0002] Spiral welded pipe is a steel pipe made from strip steel coils as raw materials, which are formed by cold extrusion and then welded together to form a spiral seam.

[0003] In the spiral welded pipe forming stage, the forming equipment used is a forming machine. Existing forming machines generally adopt a three-roll forming method. The most commonly used is a three-roll forming machine with an outer clamping roller. After the steel plate passes through the forming machine, it forms a spiral tube shape. The outer clamping roller supports the outside of the spiral welded pipe and works with the forming roller to support the spiral welded pipe. The welding machine body welds the spiral weld seam.

[0004] When manufacturing large-diameter spiral welded pipes, existing forming machines only provide external support for the spiral welded pipes and lack a structure to support the inside of the spiral welded pipes. The lack of internal support points during the forming process of large-diameter spiral welded pipes may lead to deformation of the spiral welded pipes, which will affect the roundness of the spiral welded pipes. Utility Model Content

[0005] To address the potential deformation issue during the spiral welded pipe forming process, this application provides a support mechanism for a spiral welded pipe forming machine.

[0006] The support mechanism of the spiral welded pipe forming machine provided in this application adopts the following technical solution: A support mechanism for a spiral welded pipe forming machine is provided. The forming machine includes a support platform. The support mechanism includes a first support rod fixedly connected to the upper surface of the support platform. A second support rod is integrally formed on the first support rod. At least three circumferentially distributed fixed rods are fixedly connected to the end of the second support rod. Each fixed rod is connected to a circular connecting rod. Each connecting rod is rotatably connected to an inner support roller.

[0007] By adopting the above technical solution, the first support rod and the second support rod support the fixed rod. During the spiral welded pipe forming process, the inner support roller is placed inside the spiral welded pipe and supports the inner wall of the spiral welded pipe. During the spiral welded pipe forming process, the inner support roller provides support points for the inside of the spiral welded pipe, which has the potential to reduce the deformation of the spiral welded pipe and thus reduce the impact on the roundness of the spiral welded pipe.

[0008] Optionally, each connecting rod is connected to an adjustment assembly between itself and the fixed rod.

[0009] By adopting the above technical solution, the inner support tube can be expanded outward by adjusting the components, so that the inner support roller abuts against the inner wall of the spiral welded pipe, and the inner support roller supports the inner wall of the spiral welded pipe.

[0010] Optionally, the adjusting assembly includes an adjusting rod fixedly connected to the connecting rod, the adjusting rod having an adjusting groove for the fixed rod to slide into, a support plate fixedly connected to the side wall of the fixed rod, a first threaded rod threadedly connected to the support plate, the first threaded rod being rotatably connected to the end of the adjusting rod, and a handwheel fixedly connected to the end of the first threaded rod.

[0011] By adopting the above technical solution, rotating the handwheel causes the first threaded rod to rotate, which in turn causes the adjusting rod to move away from the fixed rod. The adjusting rod then causes the connecting rod and the inner support roller to expand outward, so that the inner support roller comes into contact with the inner wall of the spiral welded pipe.

[0012] Optionally, the side wall of the fixing rod is provided with graduations.

[0013] By adopting the above technical solution, when adjusting the position of the inner support roller, the scale corresponding to the ends of the three adjusting rods is the same, thereby ensuring that the outward expansion distance of the three inner support rollers is consistent, which has the effect of providing stable support to the inner wall of the spiral welded pipe by the three inner support rollers.

[0014] Optionally, a reinforcing rod is fixedly connected between the connecting rod and the adjusting rod.

[0015] By adopting the above technical solution, the reinforcing rod increases the stability of the connection between the connecting rod and the adjusting rod.

[0016] Optionally, the second support rod is connected to a welding torch body, and a connecting assembly is connected between the welding torch body and the second support rod.

[0017] By adopting the above technical solution, the welding torch body welds the spiral welded pipe.

[0018] Optionally, the connecting assembly includes a first connecting block fixedly connected to the top of the welding torch body, a second connecting block fixedly connected to the lower surface of the second support rod, the second connecting block having a first sliding groove for the first connecting block to slide into, a second sliding groove communicating with the first sliding groove on the side wall of the second connecting block, a second threaded rod passing through the second sliding groove fixedly connected to the second connecting block, and a wing nut threadedly connected to the second threaded rod.

[0019] By adopting the above technical solution, the welding torch body is moved up or down, the first connecting block moves in the first slide groove, the second threaded rod moves in the second slide groove, and when the welding torch body is adjusted to a suitable position, the wing nut is tightened, and the wing nut fixes the position of the welding torch body.

[0020] Optionally, a first support roller group and a second support roller group are installed on the upper surface of the support platform, a support frame is fixedly connected to the upper surface of the support platform, three outer clamping roller groups are installed on the support frame, and a pressing roller group is installed on the support platform above the first support roller group.

[0021] By adopting the above technical solution, the steel plate is fed through the pressing roller group and the first support roller group. The pressing roller group is used to press the steel plate when it is fed. The steel plate passes through the second support roller group and the outer clamping roller group in sequence to form a spiral welded pipe.

[0022] In summary, this application includes at least one of the following beneficial technical effects: The first and second support rods support the fixed rod. During the spiral welded pipe forming process, the inner support roller is placed inside the spiral welded pipe and supports the inner wall of the spiral welded pipe. During the spiral welded pipe forming process, the inner support roller provides support points inside the spiral welded pipe, which has the potential to reduce the deformation of the spiral welded pipe and thus reduce the impact on the roundness of the spiral welded pipe. Turning the handwheel causes the first threaded rod to rotate, which in turn causes the adjusting rod to move away from the fixed rod. The adjusting rod then causes the connecting rod and the inner support roller to expand outward, so that the inner support roller comes into contact with the inner wall of the spiral welded pipe.

[0023] When adjusting the position of the inner support rollers, the corresponding scales at the ends of the three adjusting rods are made the same, thereby ensuring that the outward expansion distance of the three inner support rollers is consistent, which has the effect of providing stable support to the inner wall of the spiral welded pipe. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0025] Figure 2 This is a schematic diagram illustrating the structure of the second support roller group in this embodiment.

[0026] Figure 3 This is a schematic diagram illustrating the structure of the inner support roller in this embodiment.

[0027] Figure 4 This is a schematic diagram illustrating the structure of the first threaded rod in this embodiment.

[0028] Figure 5 This is a schematic diagram illustrating the structure of the wing nut in this embodiment.

[0029] Explanation of reference numerals in the attached drawings: 1. Support platform; 11. First support roller group; 12. Second support roller group; 13. Support frame; 131. Outer clamping roller group; 14. Pressing roller group; 2. First support rod; 21. Second support rod; 211. Fixed rod; 2111. Scale; 3. Connecting rod; 31. Inner support roller; 32. Reinforcing rod; 4. Adjusting assembly; 41. Adjusting rod; 411. Adjusting groove; 42. Support plate; 43. First threaded rod; 44. Handwheel; 5. Welding torch body; 6. Connecting assembly; 61. First connecting block; 62. Second connecting block; 621. First sliding groove; 622. Second sliding groove; 63. Second threaded rod; 64. Wing nut. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0031] This application discloses a support mechanism for a spiral welded pipe forming machine.

[0032] like Figure 1 and Figure 2 As shown, a support mechanism for a spiral welded pipe forming machine is disclosed. The forming machine includes a support platform 1. A first support roller group 11 and a second support roller group 12 are mounted on the upper surface of the support platform 1. A support frame 13 is fixedly connected to the upper surface of the support platform 1, and three outer clamping roller groups 131 are mounted on the support frame 13. A pressing roller group 14 is also mounted on the upper surface of the support platform 1, positioned above the first support roller group 11. The steel plate is fed through the pressing roller group 14 and the first support roller group 11. The pressing roller group 14 is used to press the steel plate during feeding. After the steel plate passes through the second support roller group 12 and the outer clamping roller group 131 in sequence, a spiral welded pipe is formed.

[0033] like Figure 2 and Figure 3 As shown, the support mechanism includes a first support rod 2 fixedly connected to the upper surface of the support platform 1. A second support rod 21 is integrally formed at the top of the first support rod 2. Three fixing rods 211 are fixedly connected to the end of the second support rod 21 away from the first support rod 2. The three fixing rods 211 are evenly distributed in a circle.

[0034] Each fixed rod 211 is connected to a connecting rod 3, which is a round rod. Each connecting rod 3 and the fixed rod 211 is provided with an adjusting component 4, which connects the fixed rod 211 and the connecting rod 3. Each connecting rod 3 is rotatably connected to an inner support roller 31, which can only rotate around the axis of the connecting rod 3 relative to the connecting rod 3.

[0035] The inner support roller 31 is placed inside the spiral welded pipe. The inner support roller 31 is made to abut against the inner wall of the spiral welded pipe by adjusting the component 4. The inner support roller 31 supports the inner wall of the spiral welded pipe. During the forming process of the spiral welded pipe, the inner support roller 31 provides support points for the inside of the spiral welded pipe, reducing the possibility of deformation of the spiral welded pipe, and thus reducing the impact on the roundness of the spiral welded pipe.

[0036] like Figure 3 and Figure 4 As shown, the adjusting assembly 4 includes an adjusting rod 41 fixedly connected to the connecting rod 3, and the adjusting rod 41 is arranged perpendicularly to the connecting rod 3. Both the adjusting rod 41 and the fixed rod 211 are rectangular rods. The adjusting rod 41 is provided with an adjusting groove 411, and the fixed rod 211 is slidably inserted into the adjusting groove 411. A support plate 42 is fixedly connected to the side wall of the fixed rod 211. A first threaded rod 43 is threadedly connected to the support plate 42. The end of the first threaded rod 43 is rotatably connected to the end of the adjusting rod 41, and the first threaded rod 43 can only rotate relative to the adjusting rod 41.

[0037] A handwheel 44 is fixedly connected to the end of the first threaded rod 43 away from the adjusting rod 41. By rotating the handwheel 44, the handwheel 44 drives the first threaded rod 43 to rotate, and the first threaded rod 43 moves towards the side closer to the adjusting rod 41. The first threaded rod 43 drives the adjusting rod 41 to move away from the fixed rod 211. The adjusting rod 41 drives the connecting rod 3 and the inner support roller 31 to expand outward, so that the inner support roller 31 abuts against the inner wall of the spiral welded pipe, and the inner support roller 31 supports the inner wall of the spiral welded pipe.

[0038] Each fixed rod 211 has a scale 2111 on its side wall. When the position of the inner support roller 31 is adjusted by adjusting the rod 41, the scale 2111 corresponding to the ends of the three adjusting rods 41 is the same, thereby ensuring that the outward expansion distance of the three inner support rollers 31 is consistent, so that the three inner support rollers 31 provide stable support to the inner wall of the spiral welded pipe.

[0039] A reinforcing rod 32 is fixedly connected between the connecting rod 3 and the adjusting rod 41, which increases the stability of the connection between the connecting rod 3 and the adjusting rod 41.

[0040] like Figure 2 and Figure 5 As shown, the second support rod 21 is connected to the welding gun body 5, and a connecting component 6 is provided between the welding gun body 5 and the second support rod 21. The connecting component 6 connects the welding gun body 5 and the second support rod 21, and the welding gun body 5 welds the spiral welded pipe.

[0041] The connecting assembly 6 includes a first connecting block 61 fixedly connected to the top of the welding torch body 5, and a second connecting block 62 fixedly connected to the lower surface of the second support rod 21. The lower surface of the second connecting block 62 has a first sliding groove 621, and the first connecting block 61 slidably engages with the first sliding groove 621. The side wall of the second connecting block 62 has a second sliding groove 622, which communicates with the first sliding groove 621. A second threaded rod 63 is fixedly connected to the side of the first connecting block 61 near the second sliding groove 622. The second threaded rod 63 passes through the second sliding groove 622 and is threadedly connected to a wing nut 64.

[0042] When it is necessary to adjust the distance between the welding torch body 5 and the spiral welded pipe to be welded, loosen the wing nut 64 and move the welding torch body 5 up or down. The first connecting block 61 moves in the first slide groove 621 and the second threaded rod 63 moves in the second slide groove 622. When the welding torch body 5 is adjusted to the appropriate position, tighten the wing nut 64. The wing nut 64 fixes the position of the welding torch body 5.

[0043] The implementation principle of the support mechanism of the spiral welded pipe forming machine according to an embodiment of this application is as follows: Rotating the handwheel 44 drives the first threaded rod 43 to rotate. The first threaded rod 43 drives the adjusting rod 41 to move away from the fixed rod 211. The adjusting rod 41 drives the connecting rod 3 and the inner support roller 31 to expand outward, so that the inner support roller 31 abuts against the inner wall of the spiral welded pipe, providing support to the inner wall of the spiral welded pipe. The inner support roller 31 is placed inside the spiral welded pipe, and the adjusting assembly 4 makes the inner support roller 31 abut against the inner wall of the spiral welded pipe, providing support to the inner wall of the spiral welded pipe during the forming process. This reduces the possibility of deformation of the spiral welded pipe, thereby reducing the impact on the roundness of the spiral welded pipe.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A support mechanism for a spiral welded pipe forming machine, the forming machine comprising a support platform (1), characterized in that: The support mechanism includes a first support rod (2) fixedly connected to the upper surface of the support platform (1). The first support rod (2) is integrally formed with a second support rod (21). At least three circumferentially distributed fixed rods (211) are fixedly connected to the end of the second support rod (21). Each fixed rod (211) is connected to a circular connecting rod (3). Each connecting rod (3) is rotatably connected to an inner support roller (31).

2. The support mechanism of a spiral welded pipe forming machine according to claim 1, characterized in that: Each connecting rod (3) is connected to an adjusting component (4) between itself and the fixed rod (211).

3. The support mechanism of a spiral welded pipe forming machine according to claim 2, characterized in that: The adjusting assembly (4) includes an adjusting rod (41) fixedly connected to the connecting rod (3). The adjusting rod (41) is provided with an adjusting groove (411) for the fixed rod (211) to slide into. A support plate (42) is fixedly connected to the side wall of the fixed rod (211). A first threaded rod (43) is threadedly connected to the support plate (42). The first threaded rod (43) is rotatably connected to the end of the adjusting rod (41). A handwheel (44) is fixedly connected to the end of the first threaded rod (43).

4. The support mechanism of a spiral welded pipe forming machine according to claim 3, characterized in that: The side wall of the fixing rod (211) is provided with a scale (2111).

5. The support mechanism of a spiral welded pipe forming machine according to claim 3, characterized in that: A reinforcing rod (32) is fixedly connected between the connecting rod (3) and the adjusting rod (41).

6. The support mechanism of a spiral welded pipe forming machine according to claim 1, characterized in that: The second support rod (21) is connected to the welding gun body (5), and a connecting component (6) is connected between the welding gun body (5) and the second support rod (21).

7. The support mechanism of a spiral welded pipe forming machine according to claim 6, characterized in that: The connecting assembly (6) includes a first connecting block (61) fixedly connected to the top of the welding torch body (5), a second connecting block (62) fixedly connected to the lower surface of the second support rod (21), the second connecting block (62) having a first sliding groove (621) for the first connecting block (61) to slide into, the side wall of the second connecting block (62) having a second sliding groove (622) communicating with the first sliding groove (621), the second connecting block (62) having a second threaded rod (63) fixedly connected through the second sliding groove (622), and the second threaded rod (63) having a wing nut (64) threadedly connected to it.

8. The support mechanism of a spiral welded pipe forming machine according to claim 1, characterized in that: The upper surface of the support platform (1) is equipped with a first support roller group (11) and a second support roller group (12). A support frame (13) is fixedly connected to the upper surface of the support platform (1). The support frame (13) is equipped with three outer clamping roller groups (131). A pressing roller group (14) is installed on the support platform (1) and placed above the first support roller group (11).

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