Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With product ejector
Patent
1993-05-26
1995-04-11
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With product ejector
264334, B29C 4540
Patent
active
054052599
ABSTRACT:
A locally pressing type injection molding machine which performs various working operations on a molded product during an injection molding cycle is designed so that it can perform various working operation on a molded product after the injection step. To achieve this, a pressing pin is provided to extend in such a manner that it passes through at least part of either the fixed mold or the movable mold. A distal end of the pressing pin is provided in such a manner that it can advance into or retract from a cavity. A pressing cylinder is disposed behind the pressing pin to vibrate the pressing pin when a hydraulic pressure supply means supplies a pulsating hydraulic pressure to the pressing cylinder. A pulsating pressing force is applied to a resin which fills the cavity to work the molded product in a desired form. Therefore, a highly accurate worked surface can be obtained.
Heitbrink Tim
Sumitomo Heavy Industrie's, Ltd.
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