MOLDING APPARATUS FOR ELECTRIC FUSION JOINT

摘要

PROBLEM TO BE SOLVED: To form a stopper for locking an end portion of a connected tube to be connected inside a joint, and prevent a heating wire a from being damaged by a stopper forming portion. SOLUTION: In an apparatus for molding an electric fusion joint, a groove 16 is carved on a peripheral surface of a core 11 around which a heating wire extending in the direction of the core axis is wound and a resin is injected in a cavity 23 which is formed by the core 11 and an outer mold 14 in order to mold a projected stripe in the groove 16, and a stopper is formed on the inside of the joint by the end face of the projected stripe. Any step is not formed on the peripheral surface of the core 11, so an heating wire 5 wound around the peripheral surface of the core is not damaged by bending at the step.