DIE-CASTING MACHINE WITH INJECTION ASSEMBLY WITH A SHUT-OFF VALVE

摘要

An injection assembly (2) of a hydraulic machine for diecasting is provided with a main shut-off valve (50) suitable to prevent the return of fluid from the main pressure chamber (30). The main valve (50) comprise a containment case (541), in which a return spring (540) is housed, suitable to retain any rupture fragments thereof.

主权项

1. An injection assembly of an hydraulic machine for die-casting, comprising an injection piston, a main inlet for inputting a fluid under pressure, a main pressure chamber upstream of the injection piston and a main shut-off valve normally in a closed configuration, operating between the main inlet and the main pressure chamber and adapted to prevent the fluid from returning from the main chamber to the main inlet, wherein
main valve comprises a shutter and a spring adapted to operate permanently on the shutter towards the closed configuration, and containment means adapted to create a barrier to prevent the spring break-up fragments from passing to the main pressure chamber.