Method of manufacturing an inner driving element of a magnetic drive centrifugal pump

摘要

A method of manufacturing a magnetic driving element comprises the steps of: inserting a yoke 44 and a magnet 46 as a unit into a mold; supporting the unit within the mold by a support 64 at a molding support region 62 on the unit; filling the mold with plastic; retracting the support 64 from the mold support region 62 at a predetermined time during the molding process; and filling the molding support region 62 with the plastic and fully encapsulating the unit with the plastic within the mold to provide a shell 60.