Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With product ejector
Patent
1991-01-10
1992-06-16
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With product ejector
4254516, 425593, 425809, B29C 4543, B29C 4544
Patent
active
051220512
ABSTRACT:
Part ejection apparatus for ejecting molded parts from a mold carried by a movable platen in an injection molding machine. A plurality of linearly operating hydraulic cylinders are provided to move an ejector bar that is carried along guide rods supported by a movable platen so that the ejector bar moves toward and away from a mold member that is carried by the movable platen. Suitable connections can be provided between the ejector bar and the ejection mechanism of the mold to drive ejector pins carried by the mold for separating the molded part from the mold surface. Additionally, a rotary motor is also carried by the movable platen and has its axis coincident with the longitudinal axis of the movable platen for connection of an output shaft of the motor with a drive mechanism carried by a mold, the drive mechanism suitable for rotating rotatable cores that form internal threads on the molded article. The linear and rotary ejection apparatus can be used individually, or they can be used in appropriate sequence in a core-type mold where separation of the cores does not simultaneously effect separation of the part from the mold.
REFERENCES:
patent: 3161918 (1964-12-01), Zearbaugh
patent: 3597798 (1971-08-01), McDonald
patent: 4605367 (1986-08-01), Gutjahr
patent: 4828769 (1989-05-01), Maus et al.
"Arburg Allrounder," brochure published by Maschinenfabrik Hehl & Sohne, Lossburg, Germany, 20 pages, no publication date.
"Arburg Basic-Information," brochure published by Arburg Maschinenfabrik Hehl & Sohne, GmbH & Co. KG, Lossburg, Germany, 17 pages, printed in Jun. 1988.
Cincinnati Milacron Inc.
Heitbrink Tim
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