Injection molding apparatus for seal member

Abstract

The invention provides an injection molding apparatus for seal member in which a seal member being a molding is left on the moving side without fail when opening a stationary mold and a moving mold. In the injection molding apparatus for seal member according to the invention, a molten resin is injected by way of a gate 59 into a cavity 58, the injected molten resin is cut by a gate seal pin 66 provided on the moving side while sealing the gate, and under the condition that the moving mold is opened from the stationary mold, a seal member 35 remaining in the moving side is ejected by ejector pins 68 provided on the moving side, thus the seal member 35 is molded; wherein on the moving mold 54, convex portions for forming recesses of wall thickness is formed at portions not serving as sealing faces of the seal member 35.

Dependencies are inferred from the claim text.