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Device and method for internal high pressure forming of pipe

A technology of internal high-pressure forming and pipe material, which is applied in the field of internal high-pressure forming of pipe materials, can solve the problems of bulky supercharger, low work efficiency, and complex system, and achieve the effects of saving ultra-high pressure pipelines, saving costs, and increasing dimensional accuracy

Active Publication Date: 2015-09-30
NINGBO POWER PRECISION HYDRAULIC MACHINERY
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Problems solved by technology

Although the method and device are widely used, due to liquid filling and special supercharger boosting, not only the work efficiency is low, but also the supercharger needs to be manufactured, especially when the pressure is high and the volume is large, the volume of the supercharger Huge and requires corresponding pipelines and joints, making the system complex and costly

Method used

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  • Device and method for internal high pressure forming of pipe
  • Device and method for internal high pressure forming of pipe

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Embodiment Construction

[0014] Such as figure 1 As shown, the pipe internal high pressure forming device of the present invention includes a booster rod 1, which is symmetrically arranged on the left and right. 2, 6 are in contact with the end surface of the hollow pipe 5 to form a sealed cavity; the high pressure forming device for the pipe also includes an upper mold 4 and a lower mold 7 for making the pipe 5 into a desired shape. The forming device also includes a water tank 3 into which liquid is injected, and the pipe material 5 is completely immersed in the liquid in the water tank 3 . The left and right push heads 2, 6 form a dynamic sealing connection with the wall of the water tank 3, so that the push heads 2, 6 can freely perform piston movements relative to the wall of the water tank 3 without leaking the liquid in the water tank 3.

[0015] The high-pressure forming method in the pipe of the present invention is as follows: the pipe 5 is put into the cavity of the lower mold 7 in the wa...

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Abstract

The invention relates to a device and a method for pipe internal high pressure forming. The device for pipe internal high pressure forming comprises a mould and a pressurizing and sealing device, wherein the mould is used for manufacturing a pipe in a required shape; the sections of the pressurizing and sealing device, which are adjacent to the pipe, can form a sealed state with the end surfaces of the pipe; and the pressurizing and sealing device can exert sufficient internal pressure for the forming of the pipe.

Description

technical field [0001] The invention belongs to the field of internal high-pressure forming of pipes, in particular to a device and method for internal high-pressure forming of pipes. Background technique [0002] Pipe internal high pressure forming is an advanced forming technology developed in recent years. It saves materials and has high strength. It is especially widely used in aircraft manufacturing, automobile manufacturing and other fields. The traditional pipe internal high pressure forming method is to first fill the hollow pipe with liquid. Then push the head on both sides to feed the material, and at the same time, the supercharger pressurizes the liquid in the tube, so that the tube blank fits on the surface of the mold cavity, thereby realizing the forming of the part. For example, CN2427399Y and CN101618415A disclose the forming method and device of this pipe. Although the method and device are widely used, due to liquid filling and special supercharger boosti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/033B21D26/045B21D26/047
Inventor 李百炼刘文蒋广军尹修修张林优
Owner NINGBO POWER PRECISION HYDRAULIC MACHINERY
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