Ejection mechanism and mold using the same

A mold comprising:

• a stationary mold half;
• a movable mold half;
• and
• an ejection mechanism comprising:
• a first plate defining a first through hole and at least one ejector hole;
• a second plate opposite to the first plate, the second plate defining another first through hole;
• an ejector plate between the first plate and the second plate, the ejector plate defining a second through hole coaxial with the first through holes, and comprising at least one ejector slidably received in the at least one ejector hole;
• an actuator comprising a driving shaft;
• and
• a drive mechanism between the first plate and the second plate, the drive mechanism comprising two threaded posts and a belt, the two threaded posts substantially parallel to the at least one ejector, wherein one end of each threaded post connects to the drive shaft of the actuator directly through the belt, the other end of each threaded post is threadedly engaged in the ejector plate, when the threaded posts rotate, the threaded posts drive the ejector plate to move between the first plate and the second plate.

An ejection mechanism comprising:

• a first plate defining a first through hole and a plurality of ejector holes;
• a second plate opposite to the first plate, the second plate defining another first through hole;
• an ejector plate between the first plate and the second plate, the ejector plate defining a second through hole coaxial with the first through holes, and comprising a plurality of ejectors slidably received in the ejector holes;
• an actuator comprising a driving shaft;
• and
• a drive mechanism between the first plate and the second plate, the drive mechanism comprising:
• a plurality of threaded posts threadingly and movably engaged with the ejector plate;
• and
• a belt, one end of each threaded post connecting to the drive shaft of the actuator directly through the belt, the other end of each threaded post threadedly engaged in the ejector plate, such that the driving shaft is capable of driving the threaded posts to rotate whereby the ejector plate moves up or down as desired and ends of the ejectors correspondingly extend out from or retract back into the first plate.