Apparatus for injection molding

Details Apparatus for injection molding Apparatus for injection molding

1994-02-14

1995-10-24

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

054605091

ABSTRACT:
Molten plastic is filled in closed a movable mold 20 and a stationary mold 30. Before fitting, a regulator 62 is projected into a gate 12. The regulator 62 is placed in a regulator hollow 61 and is driven by a regulator driver 63. After filling molten plastic into a cavity through the gate from a runner, a shutter 42 shuts the gate 12. The shutter 42 is placed in a shutter hollow 41 and is driven by a shutter driver 4. The regulator 62 retreats from the gate 12 to receive the volume of excess plastic at the time the shutter 42 shuts the gate. When the molds open, a molding is separated from the runner 11 and is ejected.

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