The utility model discloses a core structure of a three-layer head with a single accumulator cylinder for a blow molding machine, belonging to the technical field of blow molding. It solves the problem that the conventional single accumulator cylinder of a blow molding machine cannot meet the process requirements for producing plastic products with three-layer parisons. The core structure of the three-layer head with a single accumulator cylinder in this solution includes an accumulator core, a first feeding distributor, a second feeding distributor, an accumulator cylinder barrel, an extrusion mold, a middle layer spiral body, an outer layer spiral body, an intermediate ring and a pressing ring. In this design, the accumulator core and the accumulator cylinder barrel form a single accumulator cylinder structure. The middle layer spiral body, outer layer spiral body and intermediate ring jointly constitute the three-layer head core structure, which sequentially forms inner, middle and outer flow channels for extruding three-layer parisons. The pressing ring moves axially in the material storage channel, and the three-layer parison is extruded and shaped through the extrusion mold, fully satisfying the production process demands of three-layer parison plastic products.
Area Code: CN
Application Number: CN201821430712.7
