Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Forming plural articles
Patent
1988-03-21
1992-08-25
Heitbrink, Jill L.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Forming plural articles
2643288, 2643289, 425562, B29C 4530
Patent
active
051416964
ABSTRACT:
An engagement for mechanically adjusting the flow through each of a plurality of mold nozzles supplied by a manifold for a multicavity mold, to properly balance the flow into each mold cavity. The arrangement includes a converging opening located immediately upstream of the cavity gate opening and receiving a pin extending through the main feed passage. The position of the pin is axially adjustable by having a threaded head received in a threaded bore formed in the manifold, with a pressure sealing bushing received over the pin stem. The flow of material can be balanced by externally adjusting the position of the pin associated with each mold nozzle. A side accessible arrangement is provided in a second embodiment, in which a worm gear drive connects a transversely arranged cross rod to the adjustment pin.
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Benefiel John R.
Heitbrink Jill L.
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