Apparatus and method for producing shell-like molds

Details Apparatus and method for producing shell-like molds Apparatus and method for producing shell-like molds

1997-10-23

1999-03-16

Lin, Kuang Y

Metal founding

Process

Shaping a forming surface

164 15, 1641601, B22C 1523

Patent

active

058817948

ABSTRACT:
An apparatus to produce a shell-like mold by vacuum sucking molding sand into a shell-like cavity defined by a cope and a drag is disclosed. The apparatus includes a drag and a cope mounted on the drag so that they define a shell-like cavity between them. The drag holds on its upper surface a pattern. The drag has a plurality of sucking apertures at places adjacent to the perimeter of the pattern. The sucking apertures communicate with a vacuum source. The cope has a single molding-sand-supplying bore which communicates with the cavity. To produce a shell-like mold, the molding sand is introduced from the bore into the cavity by means of a vacuum source.

REFERENCES:
patent: 3751540 (1973-08-01), Prahl, Jr. et al.
patent: 4454906 (1984-06-01), Musschoot
patent: 4579162 (1986-04-01), Quinn, Jr.
patent: 4724888 (1988-02-01), Buhler

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