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A device and method for forming a pipe by drawing, bending and rolling

A pipe, bending and rolling technology, applied in the field of pipe drawing, bending and rolling, can solve the problems of high equipment investment and maintenance costs, inability to produce small-section products, low concrete bonding strength, etc., to achieve equipment investment and maintenance costs. Uniform deformation, strong practical effect

Active Publication Date: 2017-12-29
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, traditional high-frequency welded pipes are mainly formed by roll bending machines. Specifically, a series of rollers continuously bend metal sheets into hollow pipes of a certain shape and size. , Equipment investment and maintenance costs are high, and cannot well meet the needs of energy saving and emission reduction
[0003] In daily life, CFST is widely used in construction, municipal and other fields due to its good bending and crushing resistance and low cost. Shortcomings such as cross-section products, resulting in restrictions on its use
The cored tube made of outer metal material and inner layered core material can overcome the above problems well. At present, the existing technology is to pour the cored material into the pipe by manual operation, which has low production efficiency and is difficult to Realize industrial production

Method used

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  • A device and method for forming a pipe by drawing, bending and rolling
  • A device and method for forming a pipe by drawing, bending and rolling
  • A device and method for forming a pipe by drawing, bending and rolling

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Embodiment 1

[0044] Such as image 3 and Figure 4As shown, the present invention provides a pipe stretch bending and rolling forming device, which is used to draw and bend the metal strip 4 into a cored tube, and the cored tube is formed after the metal strip is rolled and formed into a closed tube. Before filling the core material in the pipe, the device includes: an uncoiling device 2, a friction damping device 3, a guide roller 5, a stretch bending and rolling device 6, and a pinch roller 7 arranged in sequence along the penetration direction of the metal strip 4 , welding device 8, rolling unit 10, annealing device 11 and receiving device, such as Figure 7 and Figure 9 As shown, the stretch bending and rolling device 6 includes a mold main body 15, one end of the mold main body 15 is provided with a strip material inlet 16, and the other end of the mold main body 15 is provided with a sizing cavity 19. A limiting end cap 17 is provided at the mouth 16 to limit the position where ...

Embodiment 2

[0058] Such as figure 1 and figure 2 As shown, a pipe stretch bending forming device provided by the present invention is used to prepare a metal strip 4 into a hollow tube by stretch bending and rolling, including: an uncoiling device 2 arranged in sequence along the penetration direction of the metal strip 4, Friction damping device 3, guide roller 5, stretch bending and rolling device 6, pinch roller 7, welding device 8, rolling unit 10, annealing device 11 and material receiving device, such as Figure 5 As shown, the stretch bending and rolling device 6 includes a mold main body 15, one end of the mold main body 15 is provided with a strip material inlet 16, and the other end of the mold main body 15 is provided with a sizing cavity 19. A limiting end cap 17 is provided at the mouth 16 to limit the position where the metal strip 4 enters the stretch bending and rounding device 6. In this embodiment, as Figure 10 As shown, the limit end cap 17 is fixedly arranged at th...

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Abstract

The invention discloses a pipe stretch-bending, curling and forming device and method, which is used for preparing a metal belt into a hollow pipe or a core-filled pipe by stretch-bending and curling. The device comprises an uncurling device, a friction damping device, a guide roller, a stretch-bending and curling device, a clamping roller, a welding device, a continuous rolling unit, an annealing device and a material collecting device which are sequentially arranged in a penetration direction of the metal belt, wherein the stretch-bending and curling device comprises a mould main body; one end of the mould main body is provided with a first feeding hole; the other end of the mould main body is provided with a sizing cavity; the first feeding hole is provided with a limiting end cover; the inner part of the mould main body is provided with a rotary curved-surface working cavity in the axial direction; the metal belt is fed from the first feeing hole, is curled under the action of the rotary curved-surface working cavity, is welded by the welding device at a curling interface, is rolled by the continuous rolling unit, is treated by the annealing device and is collected into the material collecting device. By virtue of one-pass drawing, the metal belt can be bent into a pipe, so that both the hollow pipe and the core-filled pipe can be produced, and therefore, the production process is simplified, cost is reduced, and practicability is high.

Description

Technical field: [0001] The invention relates to the technical field of material forming, in particular to a pipe stretch bending and rolling forming device and method. Background technique: [0002] High-frequency welded pipes are widely used in various structures, conveying fluids and powdery solids, exchanging heat, manufacturing mechanical parts and containers, etc. . At present, traditional high-frequency welded pipes are mainly formed by roll bending machines. Specifically, a series of rollers are used to continuously bend metal sheets into hollow pipes of a certain shape and size. , Equipment investment and maintenance costs are high, and cannot well meet the needs of energy saving and emission reduction. [0003] In daily life, CFST is widely used in construction, municipal and other fields because of its good bending and crushing resistance and low cost. Shortcomings such as cross-section products have limited its use. The core-filling tube made of outer layer m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/08
CPCB21C37/0818
Inventor 刘相华祁俊龙高海涛张世龙王赛孙祥坤付书涛
Owner NORTHEASTERN UNIV LIAONING