Turret-type injection-molding machine

An injection-molding machine comprising:

• a pair of relatively movable platens;
• a mold plate with at least one cavity on one of said platens communicating with a source of plastic material for forming a workpiece in said cavity upon relative movement of said platens toward each other into a mold-closed position;
• a turret with at least four faces rotatable into as many operating positions about an axis transverse to the path of platen motion, said turret being shiftable along said path between said platens upon relative movement of said platens away from each other into a mold-open position and being provided with a core on each of said faces receivable in said cavity in a respective operating position for extracting a freshly molded workpiece from said path of platen motion;
• indexing means including coacting formations on at least one of said platens and on said turret for positively locking said turret in any operating position during incipient relative movement of said platens into said mold-closed position;
• a companion plate on the other of said platens confronted by one of said faces in any operating position of said turret and adapted to receive the core of the confronting face during mold closure;
• and
• ejection means on each of said faces for removing a workpiece from a respective core, at least one of said platens being provided with actuating means effective during a mold-closing stroke to engage the ejection means on a face of said turret not confronting either of said mold and companion plates for dislodging a workpiece in a direction away from said path.