https://encrypted.google.com/patents/EP0320721A3?cl=de Einzelspritzgiessdüse mit Ventilanguss ...
https://encrypted.google.com/patents/EP0320721A3?cl=deMay 2, 1990 - The invention relates to a single nozzle injection molding system in which the nozzle (10) is reciprocated longitudinally to valve gate the flow of melt to the cavity (24). The nozzle has a pointed tip (20) which seats in the gate (22) in the forward closed position and is retracted to the open position.
Ich gluabe es nicht, maybe this is not helpful Gated valve, valve gate, laser detects leaks?