Apparatus for molding plastic articles

Details Apparatus for molding plastic articles Apparatus for molding plastic articles

1977-08-22

1979-01-09

Briggs, William R.

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

Forming baffle, bottleneck, or handle

425533, 425534, 425555, B29D 2302, B29F 106

Patent

active

041336275

ABSTRACT:
A method and apparatus are disclosed for molding plastic articles, wherein the method includes the steps of filling a mold cavity at a first station with heated flowable plastic material under relatively low pressure from a first pressure source and then displacing the mold to a second station where the plastic material is cooled under pressure from a second pressure source. During the displacing step, the mold is conveyed along an arcuate path and the mold orientation is maintained. The apparatus includes a cantilevered core pin concentrically positioned in the mold cavity and a set of radially biased neck rings which preferably open automatically under a constant biasing force to release the neck of a molded article after the core pin is withdrawn from the article.

REFERENCES:
patent: 2940120 (1960-06-01), Grebowiec
patent: 3264684 (1966-08-01), Moslo
patent: 3305892 (1967-02-01), Heider
patent: 3941539 (1976-03-01), Saumsiegle et al.
patent: 3981673 (1976-09-01), Sokolow

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