Injection molding tool for preparation of permanent magnet e.g. ring magnet for brushless direct current motor rotor, has orientation magnets that are distributed around chamber and rotated partially inverse to chamber axial direction

摘要

The injection molding tool (1) comprises tool housing (7) that is provided with an injection molding chamber (2) and orientation magnets (5,5'). The orientation magnets are arranged in the tool housing and are distributed around the injection molding chamber. The orientation magnets are rotated partially inverse to the axial direction of the injection molding chamber.