US 10,220,556 B2 · Molded undercut release apparatus

Abstract

A module or unit manufactured allowing simplified installation of a lifter rod assembly of a core lifter apparatus for a mold for molding plastic parts. In some embodiments, a slide is movably mounted with respect to a retainer and/or a gib, so that the retainer attached to the lifter rod can be moved in a linear direction and a rotational direction to provide free motion and reduce wear and breakage due to uneven ejector plate movement during production cycling of the mold. In some embodiments, the slide has one or more spring-loaded devices that hold the retainer in a particular position with respect to the slide, positioned to receive the lifter rod during mold assembly. In some embodiments, the retainer accommodates connections and coiled hoses for delivering cooling fluid to an internally cooled lifter rod.

Claims18

Dependent claims

A core lifter apparatus for a mold for molding plastic parts, the core lifter apparatus comprising:

a gib mounted with respect to an ejector plate, a slide movably mounted to move in a linear direction and in a rotational direction with respect to said gib, a retainer attached to said slide, a lifter rod removably attached to said retainer, said slide and said retainer moving together between a front position and a rear position of said lifter rod, and a releasable lock releasably holding said retainer in said rear position during assembly.

Dependencies are inferred from the claim text.

Molded undercut release apparatus

Life of this patent

Molded undercut release apparatus

Life of this patent

Abstract

Claims18