Apparatus for producing molds

Details Apparatus for producing molds Apparatus for producing molds

1995-12-08

1997-12-09

Batten, Jr., J. Reed

Metal founding

Means to shape a forming surface

Including means for compacting particulate fluent mold...

164169, 164195, B22C 1528

Patent

active

056950004

ABSTRACT:
The molding apparatus includes a table movable between an area where molding sand is fed and a mold-producing area for carrying a pattern plate on which a flask is mounted, a cylinder for vertically moving the table, a closing cover having an opening at the lower part thereof, the opening communicating with an upper opening of the flask. The closing cover has a stepped part such that the cross-sectional area of the lower part of the closing cover is smaller than that of the upper part thereof. At least one air-supply pipe communicates with the upper part of the closing cover and an air valve communicates with the air-supply pipe to introduce ambient air into the air-supply pipe. An opening is formed in an upper and side part of the closing cover for communicating with a vacuum source. A press plate is suspended in the closing cover for a vertical movement such that the press plate can be airtightly inserted into the small lower part of the closing cover.

REFERENCES:
patent: 4230172 (1980-10-01), Uzaki et al.
patent: 5148852 (1992-09-01), Oishi
patent: 5476136 (1995-12-01), Leutwiler et al.

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