Injection molding die mounted on an injection molding machine fo

Details Injection molding die mounted on an injection molding machine fo Injection molding die mounted on an injection molding machine fo

1993-09-09

1995-02-14

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With coupling between charger and mold

4254519, 425577, 425581, B29C 4564

Patent

active

053889827

ABSTRACT:
An injection molding die for simultaneously molding a plurality of optical disc base boards. The die has a stationary die assembly portion that includes a first base plate having a first center axis, and a plurality of first cavities each having a respective center axis. The first cavities are arranged in an equally spaced relationship along a circumference of a circle coaxial with the first center axis. The die also has a movable die assembly portion that includes a second base plate having a second center axis, and a plurality of second cavities each having a respective center axis. Each second cavity positionally corresponds to a respective first cavity. The first center axis is aligned with the second center axis using a guide rod fixedly secured to the first base plate and that extends along the first center axis, and by using a guide member that extends along the second center axis to be positionally coincident with the first center axis. The guide member has a guide hole formed therein for receiving the guide rod. Each respective first cavity center axis is additionally aligned with each corresponding respective second cavity center axis.

REFERENCES:
patent: 4772196 (1988-09-01), Asai

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