Injection molding apparatus including force setting device

Details Injection molding apparatus including force setting device Injection molding apparatus including force setting device

1997-12-04

1999-07-13

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

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

With means to close mold

4254512, 4254515, 425592, B29C 4566

Patent

active

059223715

ABSTRACT:
An injection molding apparatus includes stationary and movable die carrier plates. The movable die carrier plate can be moved in a direction toward the stationary die carrier plate during a quick stroke and can be pressed toward the stationary die carrier plate during a power stroke. An electric motor has an output. A member is connected between the output and the movable die carrier plate to transmit movement of the output to the movable die carrier plate to move the movable die carrier plate during the quick stroke. A force setting device is responsive to a force acting between the output and the movable die carrier plate to interrupt transmission of movement of the output to the movable die carrier plate at a changeover between the quick stroke and the power stroke when the force exceeds a predetermined value. Thereafter, further movement of the output to press the movable die carrier plate toward the stationary die carrier plate during the power stroke is achieved by a power transmitting device connected between the output and the movable die carrier plate.

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