Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means between charger and mold to cut off flow of...
Patent
1998-12-21
2000-07-11
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means between charger and mold to cut off flow of...
425566, B29C 4523
Patent
active
060863579
ABSTRACT:
A valve for controlling the flow of fluent plastic material from an injection molding machine to a mold cavity. The valve includes an axially slidable valve pin that interacts with a material outlet to control flow through the valve selectively. The valve pin is actuated by an eccentric cam arrangement that positively drives the valve pin between positions where it is engaged with or disengaged from the material outlet. The cam acts on the valve pin only in an axial direction to avoid wear occasioned by side loads imposed on a valve pin.
REFERENCES:
patent: 4095931 (1978-06-01), Reitan
patent: 4212627 (1980-07-01), Gellert
patent: 4449915 (1984-05-01), van den Brink
patent: 4919606 (1990-04-01), Gellert
patent: 5067893 (1991-11-01), Osuna-Diaz
patent: 5670190 (1997-09-01), Osuna-Diaz
patent: 5984661 (1990-04-01), Vorkoper
Steil Frederick G.
Tortis Stephen T.
D-M-E Company
Friskney Stephen H.
Heitbrink Tim
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