Hydraulic assembly, for the piston in an interior high pressure shaping process, has a bypass leading part of hydraulic fluid from the piston cylinder to the tank on a control signal

摘要

The hydraulic assembly (100) to drive a piston (104) in accelerated and working modes, for use in high pressure interior shaping processes, has a piston/cylinder unit (102), a pressure supply (106), a hydraulic fluid tank (108), a servo valve unit (112) and a control (126). A bypass (130) is activated by a control signal to divert at least part of the hydraulic fluid (110) from the piston/cylinder unit to the tank.