Patent ID: 8393883
Filing Date: 2013-03-12
Classification: B29C

Abstract:
1. An ejector device of an injection molding machine that ejects a molded product from a die fixed to a platen of the injection molding machine, the ejector device comprising: a plurality of rod insertion holes formed so as to pierce through the platen; a plurality of ejector rods that are inserted into all or some of the plurality of rod insertion holes so as to slide freely therein; an ejector plate that is disposed at the rear side of the platen; an ejector driver that drives the ejector plate with respect to the platen in directions to approach it towards and to withdraw it from the platen; and a magnetic rod fixing structure that generates magnetism for removably fixing each one of the plurality of ejector rods to the ejector plate, and is capable of annulling said magnetism by rotating said each one of the plurality of ejector rods around an axis of said each one of the plurality of ejector rods.