A kind of internal high pressure forming machine

Abstract

The invention discloses an internal high-pressure forming machine which comprises a rack, a forming liquid storing device, a supercharging injection device and a die. At least two side pushing devices located on the peripheral side are arranged in the rack; each side pushing device comprises a fixing base and a side cylinder; the fixing base is internally provided with an avoiding position, and a lifting mechanism is arranged in the avoiding position; the side cylinder penetrates the avoiding position, the side cylinder is provided with a piston rod capable of getting close to the die in a reciprocated manner, a pushing head block matched with an opening in the end side of the die is arranged on the piston rod and is communicated with the supercharging injection device; and a movement part capable of being lifted relative to the rack is arranged on the lifting mechanism and is connected with the side cylinder, and the lifting route of the movement part is parallel to the lifting route of a movable transverse beam. By means of the internal high-pressure forming machine, common pipes and abnormal-shaped pipes can be machined, the floor space is small, the applicability is high, and operation is convenient.

Description

technical field [0001] The invention relates to water swelling forming equipment, in particular to an internal high pressure forming machine. Background technique [0002] Internal high pressure forming, also called hydroforming or hydroforming, is a material forming process that uses liquid as a forming medium to achieve the purpose of forming hollow parts by controlling internal pressure and material flow. It is widely used in the fields of automobile, aviation and aerospace manufacturing, especially in automobile production, such as car subframe, instrument panel bracket, rear subframe reinforcement tube, SUV longitudinal arm, subframe longitudinal arm and cross arm, hot end In the processing of parts such as exhaust manifolds, internal high-pressure hydraulic forming technology is gradually used to replace traditional processing technology. [0003] At present, the existing water expansion forming equipment for internal high pressure forming mainly includes the main cyl...

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Problems solved by technology

However, in the existing water swelling forming equipment, the centerlines of the two feeding side cylinders are of the same height, which leads to the limitation of the application range of the existing internal high pressure forming machine, which is only suitable for the forming of ordinary pipe fittings (that is, the center of the two ends of the pipe fittings line collinear), not suitable for the forming of special-shaped pipe fittings (the center lines at both ends of the pipe fittings are not collinear)

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