Progressive Components International Corporation

David Charles Helenius

James W Cullison

Glenn Starkey

Alan Patrick Hickok

An injection molding tool having a collapsible core which is movably mounted with respect to a mold plate. The mold plate is movably mounted with respect to a stripper plate that can be used to eject or remove the molded part from the injection molding tool. A retainer is fixedly positioned with respect to the mold plate so that it contacts at least a portion of a molded part when in a mold position. The retainer can be a sleeve with a through opening within or through which the collapsible core is mounted.

Collapsing core part retainer sleeve

An injection molding tool having a first section moveable with respect to a second section. In a first position, the first section contacts the second section along a parting line and forms a cavity. An expandable cavity part is moveably mounted with respect to the second section. In a closed condition, the expandable cavity part is in a retracted or molding position. The expandable cavity part can be moved away from the molding position or the closed condition to a release position or an expanded condition with allows access to molded part or other article. A core pin is either moveably mounted with respect to the expandable cavity part or is in a fixed position with respect to the expandable cavity part.

Expandable cavity for injection molding tool

An injection molding tool having a core assembly with a shaft that is lockably or securedly mounted within a bore of a plate or within another suitable lock element. Rotational or other suitable movement of the lock results in or translates into axial movement of and/or axial forces apply to the core assembly. A guide ring assembly has a center ring with a non-circular bore and a correspondingly shaped core assembly, to prevent rotational movement of the core assembly with respect to the guide ring assembly.

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Leominster, MA, United States of America

David Charles Helenius