Plastic article or earthenware shaping or treating: apparatus – Means for molding powdered metal
Patent
1982-04-14
1984-04-17
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Means for molding powdered metal
425352, B29C 300, B30B 1102
Patent
active
044431716
ABSTRACT:
In a multi-motion powder compacting press for making a useful article from powdered metal, ceramic or other particulate material, an upper assembly comprising a frame, a driven bull gear, a crankshaft having a cam and a pitman for reciprocally operating one or more upper punches into a die cavity, an improved compacting and ejection assembly depending from the frame and having a pair of inner and outer lower rams, adjustably supported by a pair of vertically spaced pressure plates, and adjustable ejection plates for upwardly ejecting a pressed article from the die cavity. Preferably, the article to be made is a two-level article, the compaction being accomplished by dual upper rams and punches pressing against the inner and outer lower rams, and the article is ejected by the sequential upward movement of lifting means responsive to the cam and below the ejection plates to force them upwardly to first eject one level of the part with the outer punch and finally eject the other level of the part with the inner punch. Means for adjusting the amount of powder fill, the relative positions of the ejection plates and the density split of a multi-level article are disclosed.
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Flint, Jr. J. Howard
Wesjay, Inc.
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