Roundness correction tool for inner wall of bent pipe after bending

Abstract

The utility model provides an inner wall roundness correction tool for a bent pipe after bending, which comprises a bottom plate, a sliding chute is fixed on the bottom plate, a mold is placed on the bottom plate at the end part of the sliding chute, and an arc groove matched with an arc-shaped steel pipe formed by hot pressing is arranged on the mold; the ball body rolls from the upper end of the arc-shaped steel pipe to the lower end of the arc-shaped steel pipe for roundness correction; the device further comprises a ball transferring tool which is arranged in the sliding groove in an embedded mode and used for bearing and transferring the balls. The hot-pressed steel pipe is placed on the mold, balls roll through the interior of the hot-pressed steel pipe through the ball transferring tool, the section of the steel pipe is repaired to be round, and therefore the production requirement is met, and the device is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe bending, and in particular relates to a tool for rounding the inner wall of a bent pipe after being pressed and bent. Background Art

[0002] Steel pipes have hollow cross-sections and are widely used as pipelines for transporting fluids, such as oil, natural gas, coal gas, water and certain solid materials. Compared with solid steels such as round steel, steel pipes are lighter in weight when their bending and torsional strengths are the same. They are an economical cross-section steel and are widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile drive shafts, bicycle frames, and steel scaffolding used in construction. They can improve material utilization, simplify manufacturing processes, and save materials and processing time.

[0003] Metal pipes such as steel pipes are one of the commonly used materials in the fields of construction and industry. During the use of steel pipes, according to different construction requirements, it is often necessary to bend the steel pipes to achieve the purpose of reasonable use. When processing steel pipes, a hot extrusion device is required to heat the steel pipes to the hot forging forming temperature for extrusion, and then bend them according to actual needs. Some need to be cut and then bent at right angles, and some need to be bent into an arc. When hot pressing and bending the steel pipes, the hot pressing will cause the internal cross-section of the steel pipe to become elliptical, which does not meet the production requirements.

[0004] Therefore, the technical problem to be solved by the utility model is that in the prior art, when hot pressing and bending a steel pipe, the hot pressing will cause the internal cross-section of the steel pipe to become an ellipse, which does not meet the production requirements. Utility Model Content

[0005] In order to solve the technical problem in the prior art that during hot pressing and bending of steel pipes, the hot pressing will cause the internal cross-section of the steel pipe to become elliptical, which does not meet the production requirements, the utility model provides a tool for rounding the inner wall of the bent pipe after bending.

[0006] The specific plan is as follows:

[0007] A tool for rounding the inner wall of a bent pipe after bending, comprising a bottom plate, a slide groove is fixed on the bottom plate, a mold is placed on the bottom plate at the end of the slide groove, and the mold is provided with an arc groove that matches the arc-shaped steel pipe formed by hot pressing;

[0008] It also includes a sphere that rolls down from the upper end of the arc-shaped steel pipe to the lower end for rounding;

[0009] It also includes a ball transport tool, which can be embedded in the slide groove to receive the ball and transport it.

[0010] Both sides of the slide groove and both sides of the mold are provided with reinforcing rib plates.

[0011] The sphere transfer tool includes a rod, one end of the rod is fixed with a hopper, the hopper can be fitted in the chute, and the other end of the rod is provided with a handle.

[0012] A hanging ring is fixed on the rod, and the distance between the hanging ring and the handle is greater than the distance between the hanging ring and the hopper.

[0013] The bottom surface of the hopper is arc-shaped.

[0014] A slope-shaped block is fixed on the mold at the end of the arc groove.

[0015] A stop block is fixed at the end of the arc groove.

[0016] Handrails are provided on both sides of the mold.

[0017] The beneficial effects of the present utility model are as follows:

[0018] The present utility model provides an inner wall rounding tooling for a bent pipe after bending. After the hot pressing of the steel pipe is completed, the steel pipe is placed on the mold, and by using the sphere transfer tool, the sphere rolls through the inside of the hot-pressed steel pipe to repair the cross-section of the steel pipe into a circular shape, so as to meet the production requirements. The device has a simple structure and is convenient to use. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 2 It is a schematic diagram of the hot pressing mold for the steel pipe.

[0021] Figure 3 It is a schematic diagram of the sphere transfer tool.

[0022] Wherein, base plate 1, chute 11, short groove 12, bolt 13, mold 2, arc groove 21, slope-shaped block 22, handrail 23, stop block 24, sphere transfer tool 3, rod 31, hanging ring 311, handle 312, hopper 32, reinforcing rib plate 4, circular arc steel pipe 5, sphere 6 Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Such as Figure 1 And Figure 2As shown, the utility model provides a tool for rounding the inner wall of a bent pipe after bending, comprising a bottom plate 1, a slide groove 11 is fixed on the bottom plate 1, a mold 2 is placed on the bottom plate 1 at the end of the slide groove 11, and an arc groove 21 is provided on the mold 2 to match the arc-shaped steel pipe 5 formed by hot pressing;

[0025] It also includes a sphere 6 that rolls down from the upper end of the arc-shaped steel pipe 5 to the lower end for rounding;

[0026] It also includes a ball transport tool 3, which can be embedded in the slide groove 11 to receive the ball 6 and transport it.

[0027] The utility model places the arc-shaped steel pipe after hot pressing on a mold, and uses a ball transfer tool to allow a ball to roll through the inside of the arc-shaped steel pipe after hot pressing to correct the cross section of the arc-shaped steel pipe into a circle, thereby meeting the production requirements. The device has a simple structure and is easy to use.

[0028] like Figure 1 As shown, reinforcing rib plates 4 are provided on both sides of the slide groove 11 and both sides of the mold 2 to strengthen the strength of the slide groove 11 and the mold 2.

[0029] like Figure 3 As shown, the ball transport tool 3 includes a rod 31, one end of which is fixed with a hopper 32, which can be embedded in the slide groove 11, and the other end of the rod 31 is provided with a handle 312, which is preferably extended laterally to both sides from the rear end of the rod 31 to facilitate the user to apply force, and the hopper 32 is used to hold the ball 6. The handle 312 is used to control the direction and posture of the ball transport tool 3, and then the direction and posture of the hopper 32 are controlled.

[0030] Furthermore, a hanging ring 311 is fixed on the rod 31, and the distance between the hanging ring 311 and the handle 312 is greater than the distance between the hanging ring 311 and the hopper 32; during operation, the hanging ring 311 of the sphere transfer tool 3 is hooked with a rope by the crane to lift and move the sphere transfer tool 3, and at the same time, the staff holds the handle 312 of the sphere transfer tool 3 by hand to control the direction and posture of the sphere transfer tool 3. The distance between the hanging ring 311 and the handle 312 is greater than the distance between the hanging ring 311 and the hopper 32. The lever principle is used to save the staff effort.

[0031] The bottom surface of the hopper 32 is in an arc shape.

[0032] like Figure 2 As shown, a slope block 22 is fixed on the mold 2 at the end of the arc groove 21 , and the slope block 22 is used to buffer the ball 6 to prevent the ball 6 from directly hitting the slide groove 11 and causing damage to the slide groove 11 .

[0033] A stop block 24 is fixed at the end of the arc-shaped groove 21. The stop block 24 is used to block the arc-shaped steel pipe 5 to prevent the arc-shaped steel pipe 5 from moving during the rolling of the sphere 6 inside the arc-shaped steel pipe 5.

[0034] Further, handrails 23 are provided on both sides of the mold 2. The handrails 23 are preferably cylindrical in shape. The mold 2 can be lifted or lowered through the handrails 23 to move the position of the mold 2.

[0035] The diameter of the sphere 6 is slightly smaller than the diameter of the arc-shaped steel pipe 5, so that the sphere 6 can roll inside the arc-shaped steel pipe 5 to restore the cross-section of the arc-shaped steel pipe 5 flattened during hot pressing into a circular cross-section to meet the production requirements.

[0036] As Figure 1 shown, short grooves 12 are provided at the four corners of the bottom plate 1. The short grooves 12 cooperate with bolts 13 to fix the bottom plate 1 to the ground to prevent the bottom plate 1 from moving.

[0037] The specific working process of the utility model is as follows:

[0038] Place the arc-shaped steel pipe 5 formed by hot pressing on the mold 2. Place the sphere 6 on the hopper 32 of the sphere transfer tool 3. Use the hook of the crane to cooperate with the rope to hook the hanging ring 311 on the sphere transfer tool 3 to lift and move the sphere transfer tool 3. At the same time, the staff holds the handle 312 of the sphere transfer tool 3 to control the direction of the sphere transfer tool 3 to move the lifted sphere transfer tool 3 to the directly upper end of the arc-shaped steel pipe 5. The staff controls the handle 312 to control the state of the hopper 32, that is, tilt the handle 312 to one side, and the hopper 32 tilts to one side synchronously, so that the sphere 6 can fall into the arc-shaped steel pipe 5. The sphere 6 enters from the upper end of the arc-shaped steel pipe 5, rolls inside the arc-shaped steel pipe 5 once, rolls out from the lower end of the arc-shaped steel pipe 5, and then rolls onto the chute 11. Use the hopper 32 of the sphere transfer tool 3 to pick up the sphere 6 from the chute 11 again for the next operation until the arc-shaped steel pipe 5 meets the production requirements, and replace the arc-shaped steel pipe 5 for the next cycle.

[0039] Or by two workers working together, that is, placing the hot-pressed circular arc steel pipe 5 on the mold 2, placing the sphere 6 on the hopper 32 of the sphere transfer tool 3, using the hook of the overhead crane to cooperate with the rope to hook the hanging ring 311 on the sphere transfer tool 3 to lift and move the sphere transfer tool 3. At the same time, the first worker holds the handle 312 of the sphere transfer tool 3 with his hand to control the direction of the sphere transfer tool 3, so as to move the lifted sphere transfer tool 3 to one side above the circular arc steel pipe 5. Another worker pushes the sphere 6 so that the sphere 6 can fall into the circular arc steel pipe 5. The sphere 6 enters from the upper end of the circular arc steel pipe 5, rolls along the inside of the circular arc steel pipe 5 once, then rolls out from the lower end of the circular arc steel pipe 5, and then rolls onto the chute 11. The sphere 6 is picked up again from the chute 11 by the hopper 32 of the sphere transfer tool 3 for the next operation until the circular arc steel pipe 5 meets the production requirements, and then the circular arc steel pipe 5 is replaced for the next cycle.

[0040] By using the roundness correction tooling of the present utility model, the cross-section of the hot-pressed circular arc steel pipe can be easily corrected, and it is convenient to use.

[0041] The technical means disclosed in the solution are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A tool for rounding the inner wall of a bent pipe after bending, characterized in that: It comprises a bottom plate (1), a slide groove (11) is fixed on the bottom plate (1), a mold (2) is placed on the bottom plate (1) at the end of the slide groove (11), and the mold (2) is provided with an arc groove (21) that matches the arc-shaped steel pipe (5) formed by hot pressing; It also includes a sphere (6) that rolls from the upper end of the arc-shaped steel pipe (5) to the lower end for rounding; It also includes a ball transfer tool (3), which can be embedded in the slide groove (11) and is used to receive the ball (6) and transfer it.

2. The tool for rounding the inner wall of a bent pipe after press bending according to claim 1, characterized in that: Reinforcing rib plates (4) are provided on both sides of the slide groove (11) and on both sides of the mold (2).

3. The tool for rounding the inner wall of a bent pipe after press bending according to claim 1, characterized in that: The ball transport tool (3) comprises a rod (31), one end of which is fixed with a hopper (32), the hopper (32) being engageable in the chute (11), and the other end of the rod (31) being provided with a handle (312).

4. The tool for rounding the inner wall of a bent pipe after press bending according to claim 3, characterized in that: A hanging ring (311) is fixed on the rod (31), and the distance between the hanging ring (311) and the handle (312) is greater than the distance between the hanging ring (311) and the hopper (32).

5. The tool for rounding the inner wall of a bent pipe after press bending according to claim 4, characterized in that: The bottom surface of the hopper (32) is in an arc shape.

6. The tool for rounding the inner wall of a bent pipe after press bending according to claim 1, characterized in that: A sloped block (22) is fixed on the mold (2) at the end of the arc groove (21).

7. The tool for rounding the inner wall of a bent pipe after press bending according to claim 1, characterized in that: A stopper (24) is fixed to the end of the arc groove (21).

8. The tool for rounding the inner wall of a bent pipe after press bending according to claim 1, characterized in that: Handrails (23) are provided on both sides of the mold (2).

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