US 2009/0155400 A1Published application

Apparatus for Blow Molding

OwnerPaul Alan Miller, Gregory Allen Gordoninventors

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Abstract

An apparatus for blow molding comprises a mold component comprising at least one shell member having a semi-cylindrical recess for receiving a cavity sub-assembly having molding surfaces, the cavity sub-assembly being installed in the recess by sliding rotation to a seating position exposing the molding surfaces, and releasable retaining means for restraining the cavity sub-assembly at the seating position whereby the cavity sub-assembly is retained in the recess, the cavity sub-assembly, shell member and retaining means being effective to the cavity sub-assembly to be installed in and removed from the shell member is retained in the clamp unit of a blow molding machine and the retaining means being adapted to restrain and release the cavity sub-assembly without use of tools. The retaining means comprising at least one pin member for engaging the cavity sub-assembly and shell member to restrain the cavity sub-assembly from sliding rotation at the seating position.

Claims18

Dependent claims

An apparatus for blow molding comprising first and second mating mold components, each mating mold component comprising a mold shell member having a recess open to a mating face of the mold component for receiving a cavity sub-assembly comprising at least one mold cavity member having molding surfaces and at least one support surface for support by the recess, the recess being substantially semi-cylindrical and the support surfaces conforming to the recess so as to allow the cavity sub-assembly to be installed in the recess and removed from the recess by sliding rotation of the cavity sub-assembly relative to the shell member, the cavity sub-assembly being installed in the recess to a seating position exposing the molding surfaces where at least one stop surface of the cavity sub-assembly abuts a stop of the shell member, and releasable retaining means for restraining the cavity sub-assembly at the seating position whereby the cavity sub-assembly is retained in the shell member, the cavity sub-assembly, shell member and retaining means being effective to permit a cavity sub-assembly to be installed in and removed from a shell member while the shell member is retained in a clamp unit of a blow molding machine and the retaining means being adapted to restrain and release the cavity sub-assembly without use of tools.

An apparatus for blow molding comprising first and second mating mold components, each mating mold component comprising a mold shell member having a recess open to a mating face of the mold component for receiving a cavity sub-assembly comprising at least one mold cavity member having molding surfaces and at least one support surface for support by the recess, the recess being substantially semi-cylindrical and the support surfaces conforming to the recess so as to allow the cavity sub-assembly to be installed in the recess and removed from the recess by sliding rotation of the cavity sub-assembly relative to the shell member, the cavity sub-assembly being installed in the recess to a seating position exposing the molding surfaces, and releasable retaining means for restraining the cavity sub-assembly at the seating position whereby the cavity sub-assembly is retained in the shell member, the cavity sub-assembly, shell member and retaining means being effective to permit a cavity sub-assembly to be installed in and removed from a shell member while the shell member is retained in a clamp unit of a blow molding machine and the retaining means being adapted to restrain and release the cavity sub-assembly without use of tools.

Dependencies are inferred from the claim text.