Molding apparatus having a molding cavity divided by an elastic

Details Molding apparatus having a molding cavity divided by an elastic Molding apparatus having a molding cavity divided by an elastic

1996-01-22

1997-09-23

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

264255, 2642972, 2643288, 425556, 425572, 425573, 425577, B29C 4516

Patent

active

056701845

ABSTRACT:
A molding apparatus includes a movable mold-defining member mounted on the movable side of an injection machine and a stationary mold-defining member mounted on its stationary side. Those members are joinable to define a mold cavity and a runner channel therebetween. The movable mold-defining member is provided with a dividing member for dividing the runner channel, or cavity, or both into a plurality of portions. The dividing member is normally urged by an elastic member to project into the channel, or cavity. The dividing member has one side which is substantially perpendicular to the direction of flow of a molding resin material to stop its flow past the dividing member, and an opposite side cut away partly to form a recess at one end thereof, so that another molding resin material reaching the opposite side may flow into the recess and thereby move said dividing member out of the channel, or cavity by overcoming the force of the elastic member.

REFERENCES:
patent: 4726758 (1988-02-01), Sekine et al.
patent: 4840760 (1989-06-01), Oishi
patent: 4990077 (1991-02-01), Morita
patent: 5094602 (1992-03-01), Morita
patent: 5186955 (1993-02-01), Morita et al.
patent: 5472655 (1995-12-01), Morita

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