Systems and methods for providing a balanced supply of magnetic-polymer melts in permanent magnet rotors

A rotor core mold assembly comprising:

• a rotor stack having a top surface and at least one rotor pole, the at least one rotor pole defined by a plurality of rotor stack cavities extending from the top surface through the rotor stack, each of the plurality of rotor stack cavities having an aspect ratio defined by a width of a respective rotor stack cavity and a longitudinal length of the rotor stack;
• and,
• a distribution plate having a top surface and a bottom surface, the bottom surface removably locatable on the top surface of the rotor stack to thereby form a fluid seal, the distribution plate further comprising:
• a flow channel positioned on the top surface of the distribution plate and extending through the distribution plate;
• an injection gate positioned proximate the bottom surface of the distribution plate in fluid communication with the flow channel;
• and,
• a plurality of secondary flow channels coupled between the injection gate and the bottom surface of the distribution plate in fluid communication with the injection gate, each of the plurality of secondary flow channels being in fluid communication with at least one of the plurality of rotor stack cavities, each of the plurality of secondary flow channels having a channel cross-sectional area.