Internal high pressure forming sealing device

Abstract

The invention relates to corrugated tube internal high pressure forming equipment, and discloses an internal high pressure forming sealing device which comprises a push cylinder, a flange, a water injection die head, a stepping cylinder and a stand, wherein the flange is connected with the push cylinder; the push cylinder is used for driving a diaphragm to be clamped, and promoting material supplement during high pressure forming; a water injection hole is arranged in the middle of the water injection die head; two grooves are respectively arranged at the two sides of the outer end of the water injection die head; an O-shaped sealing ring is arranged in each groove and is used for high-pressure sealing during work; the water injection die head is connected with the stepping cylinder, and the connecting part between the water injection die head and the stepping cylinder is sealed by O-shaped sealing rings, so that leakage can be prevented; the push cylinder and the stepping cylinder are connected with a control system; and the control system is used for controlling the locus movement of the push cylinder and the stepping cylinder so as to control the high-pressure water injection pressure, so that the high pressure forming of a workpiece can be realized. The internal high pressure forming sealing device solves the problems that in the prior art, the pressure of the forming work is overhigh, and the like since the sealing device is not reasonable, thus having the beneficial effects of simplifying the internal high pressure forming device, lowering the cost, improving the quality and the like.

Description

technical field [0001] The invention relates to the technology of internal high pressure forming of metal materials, in particular to a sealing device for internal high pressure forming. Background technique [0002] In the 1990s, due to the rising cost of fuel and raw materials and the strict restrictions on exhaust emissions by environmental protection regulations, the lightweight structure has become increasingly important. There are generally two ways to realize lightweight: select other light weight and high strength new materials, such as aluminum alloy and magnesium alloy, to replace some steel materials; Components, the use of hollow structures can not only reduce weight and save materials, but also make full use of the strength and rigidity of materials. [0003] Under this background, the internal high pressure forming of pipe fittings is an advanced manufacturing technology for manufacturing hollow lightweight structural parts. In recent years, scholars at home ...

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Problems solved by technology

[0006] In order to solve the problem of excessive forming pressure in parts forming, the purpose of the present invention is to provide a sealing device for internal high pressure forming, which can reduce the volume of the internal high pressure forming cavity, effectively reduce the pressure of internal high pressure forming, and achieve the reduction of the external dimension of the internal high pressure forming device and tonnage, reduce the development cost of internal high pressure forming equipment

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