Foundry molding installation for producing boxless sand molds

Details Foundry molding installation for producing boxless sand molds Foundry molding installation for producing boxless sand molds

1977-05-10

1979-01-23

Spicer, Jr., Robert L.

Metal founding

Means to shape a forming surface

Including means for compacting particulate fluent mold...

164187, 164194, B22C 1500, B22C 1700

Patent

active

041355709

ABSTRACT:
A foundry molding installation for producing boxless (or flaskless) sand molds comprises a molding machine having a pattern plate (or match plate) for simultaneous molding of upper and lower bodies (or mold halves) and a shifting device for transporting a molded lower body to a transfer station and simultaneously returning to the molding station, for assembly with the upper body therein, a lower body which has been provided with cores. The cores are inserted at core insertion stations along the sides of a rectangular, closed circulation, roller track which is mainly disposed outside the molding machine. At the molding-machine end the track comprises a tandem shifting apparatus having a transfer station in common with that of the shifting device of the molding machine and being movable back and forth, over the shifting device, so as to return a cored lower body from one side of the track to the transfer station while feeding a fresh lower body to the other side of the track. At the other end of the track sides, the circulation of lower bodies is effected by a transfer carriage which runs on rails from one side to the other and incorporates a section of roller track matching that of the sides of the rectangle. The shifting device may be a turntable having recessed seatings for the lower bodies, a lifting apparatus being provided below the turntable for raising the body out of the turntable and into the tandem shifting apparatus.

REFERENCES:
patent: 3406738 (1968-10-01), Hunter
patent: 3516475 (1970-06-01), Dougherty
patent: 3556196 (1971-01-01), Buhler
patent: 3618668 (1971-11-01), Dupre et al.
patent: 3630268 (1971-12-01), Hatch
patent: 3907482 (1975-09-01), Shiota et al.
patent: 3916976 (1975-11-01), Miller et al.
patent: 4034795 (1977-07-01), Otoki

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