HEAD FOR BLOW MOLDING MACHINE

摘要

PURPOSE:To evenly feed material in the circumferential direction as well lower the heights of a distribution chamber and a head by forming the distribution chamber provided with a distributing weir throttling flow path on the periphery of a plunger slidable between the head body and a core inside the head body. CONSTITUTION:The slidable plunger 3 is provided between the head body 1 and the core 2 provided concentrically inside the head body 1. A material supply path is provided along the axis on the periphery of the plunger 3 and an annular distributing weir 9 is formed in such a way as to have an aperture inside the head body at the end part on extrusion side of the periphery of the plunger 3. Since the material can be sufficiently moved toward the circumferential direction by enlarging the expanding angle alpha of the distributing chamber in which a groove gradually expanding from the end of the material supply path to the extrusion side in the vicinity of the opposite side of the extrusion side of the distributing weir 9, the height dimension of the distributing chamber can be made smaller.