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Forming method and device for thin-wall T-pipe

A tee pipe and thin-walled technology, applied in the field of thin-walled tee pipe forming methods and devices, can solve the problems of long cycle time and high cost of tee pipes, and achieve the effects of good mechanical properties, easy processing, and convenient production

Inactive Publication Date: 2013-03-13
江苏麦涛机电设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to invent a thin-walled tee pipe forming method and design a forming device to solve the problems of high cost and long cycle of processing the tee pipe by the existing hydraulic internal expansion method

Method used

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  • Forming method and device for thin-wall T-pipe
  • Forming method and device for thin-wall T-pipe
  • Forming method and device for thin-wall T-pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 2 shown.

[0021] A kind of thin-walled tee pipe forming method, it comprises the following steps:

[0022] First, put the thin-walled pipe 2 to be formed into the forming mold 5, and put the elastic force transmission medium 3 in the thin-walled pipe 2 (elastic mandrel with high pressure resistance and good mechanical properties can be used, such as a plastic rod), The elastic force transmission medium 3 should be filled with thin-walled pipe fittings 2;

[0023] Secondly, apply pressure F to the elastic force transmission medium 3 from both ends of the thin-walled pipe, so that the elastic force transmission medium 3 fills the lumen and generates a bulging force;

[0024] Third, the elastic force transmission medium is further gradually increased and deformed, and the bulging force is also gradually increased. At the same time, force is applied to both ends of the thin-walled pipe to force the thin-walled pipe to deform in the forming mold to supplem...

Embodiment 2

[0027] Such as image 3 shown.

[0028] A thin-walled three-way pipe forming device, which includes a forming die 5, an elastic force transmission medium 3, a left punch 1, a right punch 4, a lower ejector rod 6, a rubber pad 7, a lower mold base 9 and an adjustment nail 8, The forming die 5 is composed of an upper half die and a lower half groove. The upper half die is connected with a connecting block 10 for lifting. The forming die 5 is installed on the lower die base 9. The adjusting nail 8 is located in the lower die base 9. The rubber pad 7 is installed on the adjustment nail 8, the lower part of the lower ejector rod 6 is offset against the rubber pad 7, and the upper end of the lower ejector rod 6 is inserted into the cavity of the forming mold 5 for the extension of the branch pipe to control the plastic deformation of the branch pipe. Forming speed and end surface quality, the cavity is located on the lower half die, the elastic power transmission medium 3 is instal...

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Abstract

The invention discloses a forming method and device for a thin-wall T-pipe. The forming method comprises the steps that an elastic core bar which is high-voltage resistant and good in mechanical property is adopted as an expanding medium; a pipe blank filled with the elastic medium is arranged in a mould; acting forces are applied onto the two ends of the pipe blank by horizontal punches; and an extrusion expanding force is generated. The forming method has the advantages that a technology and the mould are both relatively simple; the expanding force is distributed uniformly basically; in addition, after an external force is removed, the elastic medium can recover to the original shape, and can be taken out of a manufactured product conveniently; the production is convenient; the forming precision is high; the processing of parts in complicated shapes is facilitated; and the thin-wall T-pipe has better mechanical properties.

Description

technical field [0001] The invention relates to a method and device for forming a three-way pipe, in particular to a method and device for expanding and forming a thin-walled three-way pipe by using an elastic force-transmitting medium. Background technique [0002] As we all know, thin-walled tee pipe fittings are commonly used pipe components, which are generally obtained by pipe bulging. Outward expansion. In the pipe bulging process, the force transmission medium filled in the initial pipe becomes an important factor in the bulging process. So far, internal high-pressure liquid-filled forming has become one of the most widely used methods because of the good surface quality and high strength of the parts produced, but this method has certain limitations, the most prominent of which are two aspects; one , high cost, using internal high-pressure hydraulic bulging technology, complex process, demanding sealing conditions, huge hydraulic system, high equipment investment; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/037B21D26/047
Inventor 向田法王槐春
Owner 江苏麦涛机电设备有限公司
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