Maschinenfabrik Köppern Gmbh & Co. Kg

Maschinenfabrik Koppern Fmbh & Co. Kg

Michael G Blank

Horst E Hammerschmidt

A multiple injection mould for the manufacture of preforms for the manufacture of flasks by the blast or blow moulding method, the mould having a plate fixed on the nozzle side of the injection moulding machine on which outer moulds are mounted, a core-carrying plate and the fixed plate movable within the injection moulding apparatus machine and an intermediate plate which is movable relative to the core-carrying plate and on which are arranged pairs of mould end plates each having an internal contour by which the external contour of the socket of the neck of each flask is moulded. Driving means are provided for the intermediate plate by which it can be adjusted relative to the core-carrying plate during the opening movement of the latter. Control means by which, during the opening movement of the injection moulding apparatus, the pairs of mould end plates are put into a first opening movement over a path which is greater than the radial height of the stopper contour but smaller than the radial height of the neck ring of the flask are also provided. The mould end plates are completely opened towards the end of their movement when the preforms will have been released from the outer moulds and from the core.

Multiple injection moulding apparatus

A multiple injection moulding apparatus for making parisons for blow molding bottles, the mould having a plate fixed on the nozzle side of the injection moulding machine on which outer moulds, each in a separate housing, are mounted with their faces against the plate. An independent pair of mould end plates is allotted to each outer mould with, in each case, a separate guide which extends at right angles to the direction of opening of the injection mould. In addition a common hydraulic drive to open and close the pairs of mould end plates is provided for a plurality of said pairs of mould end plates arranged adjacent each other.

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Wuppertal, Germany

Michael G Blank