Injection Molding Apparatus Having Movable Yoke Plate

An injection molding apparatus, comprising:

• a backing plate having an attached actuator;
• a yoke plate connected to and movable by the actuator attached to the backing plate;
• a plurality of actuators attached to the yoke plate and movable with the yoke plate, each of the plurality of actuators having a moveable part;
• a manifold and plurality of nozzles, the manifold and plurality of nozzles together defining a plurality of channels, each channel for flow of molding material to one of a plurality of cavity gates;
• and
• a plurality of pins, each pin connected to the movable part of one of the actuators of the plurality of actuators to open and close communication of one of the channels to the respective cavity gate.

A coinjection molding apparatus, comprising:

• a moveable yoke plate;
• a plurality of actuators attached to the yoke plate and movable with the yoke plate, each actuator having a moveable part;
• a manifold and plurality of nozzles, the manifold and plurality of nozzles together defining a plurality of channels, each channel for flow of molding material to one of a plurality of cavity gates;
• a plurality of sleeves connected to the yoke plate and movable with the yoke plate to open and close communication of outer channels to the plurality of cavity gates;
• and
• a plurality of pins, each pin connected to the movable part of one of the actuators to open and close communication of an inner channel to a respective cavity gate.