In order to achieve lower costs in a molding apparatus using a mold by reducing mold cleaning steps following releasing of the product from the mold and shortening the molding cycle, the apparatus is equipped with a plurality of fixed molds and movable molds which are heated to the temperature necessary to harden a molding material and come together by means of clamping to form a cavity, and a non-heated cold runner which supplies the molding material from an injection device to the interior of the cavity via a gate opened in the movable mold, the fixed molds and movable molds being movable between an injection stage where the injection device and cold runner (32) are present and an opening stage near the injection stage.

A rotor for an electric motor may include a shaft and a rotor core. The rotor core may include an adjacent front surface, at least one of a plurality of apertures and a plurality of cavities protruding along a rotor core body, a plurality of magnets, and a resin fixing the plurality of magnets within the rotor core. The rotor may further include a manifold of resin formed on the front surface of the rotor core. The manifold may be at least partially overlapping with at least one of at least one aperture of the plurality of apertures and at least one cavity of the plurality of cavities. The manifold may be at least one of bonded and restrained via the resin to the front surface of the rotor core.

Disclosed herein is apparatus and methods for separating plastic runners in a cold runner system between injection cycles of an injection molding process. In one exemplary embodiment, the apparatus is a heated runner separator that includes a heated melt disc with a central aperture, a heating band positioned around the heated melt disc, a first insulator ring positioned proximate to a first end of the central aperture of the heated melt disc, and a second insulator ring positioned proximate to a second and opposite end of the central aperture of the heated melt disc. The heated runner separator further includes a first terminal and second terminal extending from the heating band and arranged to couple to a heating source to heat the heating band. The heated runner separator further includes a thermocouple in contact with the heated melt disc and arranged to measure the temperature of the heated melt disc.