Hydrostatic mold gate

Details Hydrostatic mold gate Hydrostatic mold gate

1979-04-27

1981-09-15

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

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

Feed control of material en route to shaping area

425549, 425566, 425572, B29F 105

Patent

active

042894689

ABSTRACT:
A gate for a mold comprises a molding compound inlet conduit for communication of molding compound to the mold cavity. A plunger member is slidably mounted adjacent the inlet conduit and adapted to prevent flow through the conduit in a first sliding position and to permit flow through the conduit in a second sliding position. The plunger defines a slidable shaft and an enlarged end proportioned to prevent the flow through the conduit in the first position. The enlarged end defines a mold cavity-facing surface of larger area than the opposed surface on the enlarged end, which opposed surface communicates with the conduit. Accordingly, pressurized molding compound presses against the opposed surface, to spontaneously open the plunger into a second sliding position to admit molding compound to the mold cavity. Upon essential equalization of the pressures in the mold cavity at the conduit, the plunger is spontaneously moved hydrostatically to its first closed sliding position.

REFERENCES:
patent: 3010156 (1961-11-01), Smith
patent: 3164863 (1965-01-01), Hunt
patent: 3344477 (1967-10-01), Stokis
D--M--E Auto-Shut Probe, Brochure of D--M--E Company, Detroit, Michigan.

Affiliated with

Also associated with

Rating

Hydrostatic mold gate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrostatic mold gate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrostatic mold gate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-388827