Ejector device of injection molding machine

Abstract

Problem: With an ejector device of an injection molding machine, to arrange to fix some or all ejector rods removably to an ejector plate with magnetism, so that, when exchanging the ejector rods during exchange of the die on the injection molding machine, the burden of the job of exchanging those ejector rods is reduced, and the time and the cost required for exchanging the ejector rods is reduced. Means for Solution: A plurality of rod insertion holes 10 are formed so as to pierce through a movable platen 3, and a plurality of ejector rods 11 are inserted into all that plurality of rod insertion holes 10 so as to slide freely therein, with an ejector plate 12 being disposed at the rear side of the movable platen 3. In a plurality of the ejector rods 11, a plurality of base rods 15 are inserted into all the plurality of rod insertion holes 10 so as to slide freely therein and moreover their base end portions are fixed to the ejector plate 12, and detachable rods 16 are removably stuck with magnetism to the base rods 15 by first and second magnets 20 and 21.

Dependencies are inferred from the claim text.