Blowing fluid valve, blow molding unit and blow molding method

摘要

A blowing fluid valve (1) adapted to provide a flow of a blowing fluid in a blow molding device with at least one controllable flow rate, especially during a pre-blowing phase of an injection blow molding process, where the blowing fluid valve (1) comprises at least one inlet opening (11) adapted to be supplied with the blowing fluid at an inlet pressure, at least one outlet opening (12) adapted to dispense the blowing fluid , and at least one displaceable element (13), wherein different positions of the at least one displaceable element (13) corresponds to different flow rates of the blowing fluid through the blowing fluid valve (1) for a given inlet pressure. in at least one inlet opening (11), wherein the blowing fluid valve (1) comprises at least one displacement sensor (16) for determining a position of the at least one displaceable element (13) and control means. l (14) adapted to provide at least one control signal adapted to adjust the position of the at least one movable element (13) as a function of the determined position and the pressure of the blowing fluid, especially the inlet pressure.