Vacuum control system for casting machine dies

Details Vacuum control system for casting machine dies Vacuum control system for casting machine dies

1984-07-19

1986-03-25

Godici, Nicholas P.

Metal founding

Control means responsive to or actuated by means sensing or...

Control of feed material enroute to shaping area

164253, 164305, B22D 1714

Patent

active

045776709

ABSTRACT:
A casting machine die evacuation system has a vacuum source for evacuating the die cavity during casting connected to a chill block vent passage through a vacuum cut-off plug driven by a high pressure hydraulic system into an evacuation position at the start of casting and into a vacuum cut-off position in response to fast shot plunger operation. The tip of the plug is held in contact with the chill block so that cast material flow into the chill block vent passage will flow around the diameter of the plug without acting to unseat the plug from its vacuum cut-off position.

REFERENCES:
patent: 2785448 (1957-03-01), Hodler
patent: 3349833 (1967-10-01), Hodler
patent: 3745828 (1973-07-01), Howell
patent: 4431047 (1984-02-01), Takeshima et al.
patent: 4463793 (1984-08-01), Thurner

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