Injection molding carbide torpedo

Details Injection molding carbide torpedo Injection molding carbide torpedo

1996-01-16

1997-08-19

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

26432815, B29C 4520

Patent

active

056586043

ABSTRACT:
An injection molding torpedo which can itself be injection molded by a M/M process of a carbide alloy to have high resistance to corrosion and wear. The torpedo has a conical front surface which forms a pointed tip and a melt channel extending to an outlet on the conical front surface. The melt channel has a central rear portion extending from an inlet on the surface of the torpedo and a diagonal front portion extending from the rear portion to the outlet. The diagonal front portion of the melt channel is tapered inwardly enough to offset the diagonal at which it extends to allow for free ejection of the molded torpedo from its mold. This requires that the taper be enough that the shortest longitudinal line along the inner surface forming the melt channel does not diverge outwardly anywhere along its length.

REFERENCES:
patent: 5299928 (1994-04-01), Gellert
Mold-Masters Limited--Sep. 1995--"Dura Hot Runner Systems".

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