PARISON CONTROLLER IN HOLLOW MOLDING MACHINE

摘要

PURPOSE:To reduce a size, save a resource, and obtain a high-quality parison by a method wherein a core for forming a delivery port for delivering a parison is moved through a motor. CONSTITUTION:In a parison controller of a hollow molding machine in which the wall thickness of a parison extruded from a delivery port 5 is changed by vertically moving a core 6 forming the delivery port 5 provided in a die 3 of a parison cross head 1 of the hollow molding machine, the core 6 is moved through a motor 22.