Composite mold construction

Details Composite mold construction Composite mold construction

1976-05-27

1980-04-08

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Means for molding powdered metal

425 3, 425195, 425DIG5, 249168, B30B 1100

Patent

active

041970675

ABSTRACT:
The disclosed invention consists of a composite mold for consolidating and conforming particulate solids into a compressed, shape-retaining mass. The mold comprises a matched pair of generally half sections, or assemblies thereof, provided with obliquely directed aligning keys whereby one half-section of the mold can recede from adjoining contact with the other in a generally oblique direction to extend the die cavity in two dimensions and thereby freely release the molded product intact, and then return to its initial position adjoining its counterpart half section for the next molding cycle. The mold construction of this invention is of particular utility in the molding of particulate inorganic magnetizable materials in the manufacture of permanent magnets of precise dimensions.

REFERENCES:
patent: 2282155 (1942-05-01), Bandur
patent: 2298885 (1942-10-01), Hull
patent: 2482342 (1949-09-01), Hubbert et al.
patent: 2572984 (1951-10-01), Byers
patent: 2714226 (1955-08-01), Axelrod
patent: 2896299 (1959-07-01), Hemb
patent: 2983983 (1961-05-01), Mayer
patent: 3078540 (1963-02-01), Bush
patent: 3156011 (1964-11-01), Olson
patent: 3608623 (1971-09-01), Woltering
patent: 3659972 (1972-09-01), Garnett
patent: 3743455 (1973-07-01), Green
patent: 3797986 (1974-03-01), Onder

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