Method and apparatus for freeing a pattern or shaping element fr

Details Method and apparatus for freeing a pattern or shaping element fr Method and apparatus for freeing a pattern or shaping element fr

1983-08-31

1986-06-10

Crosby, Gene P.

Metal founding

Process

Shaping a forming surface

164180, B22C 900, B22C 1700

Patent

active

045937400

ABSTRACT:
A foundry mold making machine is so designed that at the start of the process of moving the pattern assembly clear of the mold, compressed air is supplied through the pattern assembly until a gap or narrow space has been formed between the mold and the pattern. In this respect an air-tight connection is maintained between the pattern plate support and the flask until the compressed air supplied to the gap has been relaxed. In this way it is possible to make certain that there is no damage to the edges of the mold by suddenly letting off air.

REFERENCES:
patent: 4114901 (1978-09-01), Pot
patent: 4182395 (1980-01-01), Buhler

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