Valve pin plate injection molding apparatus

An injection molding apparatus comprising:

• a manifold having a manifold channel extending between a manifold inlet and a manifold outlet;
• a nozzle having a nozzle channel extending therethrough, the nozzle channel in fluid communication with the manifold channel via the manifold outlet;
• a valve pin plate coupled to an actuator which, in operation, axially moves the valve pin plate between a closed position and an open position;
• a mold plate spaced apart from the manifold and disposed between the manifold and the valve pin plate, the mold plate having a valve pin passageway extending therethrough;
• a valve pin extending through the valve pin passageway;
• a valve pin holder releasably coupling the valve pin to the valve pin plate;
• and
• a biasing member being compressed against a support surface by the valve pin holder when the valve pin plate is in the closed position.