Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With product ejector
Patent
1994-05-31
1995-06-06
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With product ejector
264334, 425809, 425DIG58, B29C 4544
Patent
active
054217172
ABSTRACT:
A device and process for forming threaded molded articles includes first and second mold halves having mold surfaces which are adapted to form a molded plastic article. The first mold half cooperates with the second mold half to form a mold cavity in a mold closed position. A nozzle for injecting plastic material into the mold cavity and a power source for relatively moving the first mold half to a position spaced from the second mold half to form a mold open position, are provided. The device also includes a movable ejection mechanism for loosening the article from the mold surface of the second mold half and for ejecting the article from the mold surface of the second mold half while in the open position. A moving mechanism is connected with the movable ejection mechanism for transmitting power to and inducing motion of said ejection mechanism. An initial source is included which converts the relative motion of the mold halves into power for powering the transfer mechanism. The initial source provides power sufficient to enable the ejection mechanism to break the article loose from the mold surface of the second mold half. A secondary source is provided for powering the moving mechanism after the article is broken loose, for finishing the ejection of the article from the second mold half.
REFERENCES:
patent: 4155698 (1979-05-01), Aichinger
patent: 4496302 (1985-01-01), Brown
patent: 4652227 (1987-03-01), Aoki
patent: 5281385 (1994-01-01), Julian
patent: 5368469 (1994-11-01), Ekkert
Heitbrink Tim
Husky Injection Molding Systems Ltd.
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