Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With preform severing means movable relative to mold
Patent
1985-11-13
1987-12-01
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With preform severing means movable relative to mold
249 52, 249 66C, 249 68, 264161, 264334, 425351, 425444, 425556, 425DIG51, B29C 4540, B29C 4542, B29C 4543
Patent
active
047101245
ABSTRACT:
An apparatus is disclosed for selectively separating runners and molded products from an injection mold assembly. The apparatus comprises first and second mold portions having mating surfaces formed to define a runner channel and product cavity. A plurality of ejector pins are disposed within the second mold portion and adapted to translate within the second mold portion so as to retractably extend into the cavities for forming the runner and molded product. An ejector plate assembly is provided which translates the ejector pins a predetermined distance within the mold. A pin extension mechanism is connected to the ejector plate assembly and at least one ejector pin. The pin extension mechanism is adapted to selectively extend the connected ejector pin a predetermined distance beyond the stroke of the ejector plate assembly such that the connected pin is extended into contact with the channels for forming the runner, or the molded product.
REFERENCES:
patent: 2363808 (1944-11-01), Sayre
patent: 3508299 (1970-04-01), Ahern
patent: 3572424 (1971-03-01), Byrne
patent: 4050666 (1977-09-01), Van Tichelt
Toshiba Machine Co., America, High Precision Injection Molding Machine, ISE 90PN, 1986.
Toshiba Machine Co., America, Super Innovation Injection Molding Machine, ISE 310, ISE 390, 1984.
Toshiba Machine Co., America, High Precision Injection Molding Machine, ISE 120N, ISE 170N, ISE 250N, 1986.
Toshiba Machine Co., America, Super Innovation Injection Molding Machine, ISE 30P, ISE 60P, 1984.
Heitbrink Timothy W.
Woo Jay H.
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