TORSIONAL MOLDING APPARATUS FOR CRANK SHAFT

摘要

A torsional molding apparatus for arranging each crank pin of a crank shaft at a predetermined angular position wherein a plurality of crank pins are arranged on the same plane passing through an axis of the crank shaft. The apparatus comprises posts on a fixed support bed, a vertically movable cushion bed 9 a vertically movable bed arranged above the cushion bed, a fixed lower mold and a fixed upper mold secured to the cushion bed and vertically movable bed 3 respectively, a rotatable lower mold and a rotatable upper mold rotatably carried on the cusion bed and vertically movable bed rotatably about the axis of the crank shaft, and arms integrally and outwardly projected from the rotatable lower mold and placed in abutment with the upper ends of the posts.