Patent ID: 8444409
Filing Date: 2013-05-21
Classification: B29C,B29L

Abstract:
1. An ejector apparatus for an injection molding machine, comprising: ejector pins mounted to a movable ejector plate; a drive device for driving said ejector pins to eject injection molded parts from a cavity of an injection molding tool, said drive device being configured to displace said ejector plate with a given normal ejector force acting on an injection molded part; and a reinforcing mechanism configured to reinforce the ejector force acting on said injection molded part when an injection molded part becomes jammed so as to generate a greater ejector force greater than the given normal ejector force and thereby eject the jammed injection molded part; wherein, in a first operating mode, said drive device generates the normal ejector force, and in a second operating mode, a motor of said reinforcing mechanism presses reinforcing plates against said ejector plate.