Manufacturing method for electric motor stator

A manufacturing method for an electric motor stator,

• the electric motor stator including a molded portion that is made from thermosetting resin and covers a coil end portion of a stator coil wound around a stator core,
• the manufacturing method comprising:
• an injecting step in which the thermosetting resin is injected into a forming die;
• a dipping step in which the coil end portion is dipped into the thermosetting resin that is injected into the forming die;
• a heating step in which the thermosetting resin inside the forming die is heated so as to form the molded portion;
• and
• a mold release step in which the molded portion is released from the forming die when at least either shear force of the thermosetting resin or adhesive strength between the coil end portion and the thermosetting resin becomes greater than previously-determined mold release force.