Patent ID: 6079971
Filing Date: 2000-06-27
Classification: B29C

Abstract:
An injection assembly for a plastics material injection mould, comprising:injection nozzles for injecting a plastics material into a mould; said nozzles being supplied with plastics material through supply ducts which flowably connect the injection nozzle or nozzles to at least one central nozzle, wherein said central nozzle is supplied from a source of plastics material;said injection assembly being connectable to an injection mould matrix, said matrix being a portion of a plastics material injection mould wherein the matrix comprises at least one passage for an injection nozzle into the mold cavity; said injection assembly being characterised in that it comprises a bearing plate to which a heating distributor is removeably attached, said heating distributor being provided with injection nozzles;the bearing plate being a moulded ferrous part comprising reinforcing ribs, a space for accommodating the heating distributor, and positioning supports for said heating distributor;the heating distributor being supported on the bearing plate and comprising supply ducts connected to at least one central nozzle and to at least one injection nozzle, said heating distributor also comprising connectors accommodating the nozzles and in the vicinity of said nozzles the heating distributor; wherein the structure of the heating distributor surrounding the supply ducts forms a branch or branches of the heating distributor, said branches connecting the connectors of the injection nozzles and the connector of the central nozzle; andmeans for heating the supply ducts of the heating distributor.