Die assembly for making a propeller structure

Details Die assembly for making a propeller structure Die assembly for making a propeller structure

1998-11-25

2000-09-26

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to close mold

249109, 425441, 425443, 4254501, 425DIG58, A23P 100

Patent

active

061235393

ABSTRACT:
A die assembly apparatus is provided with a plurality of die segments that move on guides from open to closed positions. Movement from the open to the closed positions for each die segment is along the path that extends inward toward a central axis and toward a base plate. A compression member provides a retaining force along the central axis to compress the die segments between limited surface areas at the top and bottom portions of the die segments. Molten wax is injected into an injection port so that the molten wax is first introduced into the die cavity at the bottom portion of the die cavity. Hydraulic actuators are used to move the die segments from the open to the closed positions and vice versa.

REFERENCES:
patent: 4043385 (1977-08-01), Petrenchik
patent: 4243199 (1981-01-01), Hill
patent: 4414171 (1983-11-01), Duffy et al.
patent: 4524943 (1985-06-01), Busch et al.
patent: 4975041 (1990-12-01), Fries et al.
patent: 5597593 (1997-01-01), Lebensfeld et al.
patent: 6029944 (2000-02-01), Saner et al.

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