Injection blow molding apparatus and method

Injection blow molding apparatus comprising an annular series of molds and a coaxial annular series of mold cores mounted for relative axial movement toward and away from each other to effect insertion of the cores into and withdrawal of the cores from the molds, some of the molds of said series being blow molds and some being injection molds, the molds and cores further being mounted for relative angular movement about an axis coincident with the axis of the series of molds and cores to provide for insertion of a given core alternatively into an injection mold and into a blow mold, the blow molds being split into blow mold sections, and means mounting the blow mold sections for relative angular opening and closing movement about said axis.

Injection blow molding apparatus comprising an annular series of molds and a coaxial annular series of mold cores mounted for relative axial movement toward and away from each other to effect insertion of the cores into and withdrawal of the cores from the molds, some of the molds of said series being blow molds and some being injection molds, said cores being arranged about a common axis disposed coincident with a common axis about which said molds are arranged, the molds and cores further being mounted for relative angular movement about the common axis of the series of molds and cores to provide for insertion of a given core alternatively into an injection mold and into a blow mold, the blow molds being split into blow mold sections, and means mounting the blow mold sections for relative opening and closing movement including an actuating device mounted for pivotal movement about said axis and connected with one of the blow mold sections of each blow mold to provide for relative angular movement of that one of the blow mold sections of each blow mold connected to said actuating device with respect to the other blow mold section of each blow mold.

Injection blow molding apparatus comprising an annular series of molds arranged about a common axis, a turntable mounted for angular movement about said common axis, an annular series of mold cores mounted on the turntable, the turntable and the series of molds being relatively movable toward and away from each other to effect insertion of the cores into and withdrawal of the cores from the molds, some of the molds of said series being blow molds and some being injection molds to provide for insertion of a given core alternatively into an injection mold and into a blow mold, the blow molds being split into blow mold sections in planes containing the axis of the turntable, and means mounting the blow mold sections for angular opening and closing pivotal movement around said common axis.

Blow molding apparatus comprising a platen, a plurality of blow molds arranged in an annular array on the platen, the blow molds being comprised of first and second mold sections, mounting members mounted on the platen, means mounting the members for rotation about an axis normal to the platen, a plurality of securing means extending from a first one of the mounting members, and plurality of securing means extending from a second of the mounting members, means affixing the plural first sections of the blow molds to the plural securing means of the first mounting member, and means for affixing the plural second sections of the blow molds to the plural securing means of the second mounting member, and means for rotating the first and second members about the mounting means.