Blowing fluid valve, blow molding unit and blow molding method

摘要

The invention relates to 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 blowing process, the blowing fluid valve (1) comprising 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), different positions of the at least one displaceable element (13) corresponding to different flow rates of the blowing fluid through the blowing fluid valve (1) for a given inlet pressure at the 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 (14) adapted to provide at least one control signal adapted to adjust the position of the at least one displaceable element (13) based on the determined position and a blowing fluid pressure, especially the inlet pressure.