INJECTION MOLDING APPARATUS WITH COOLED INTEGRATED ACTUATOR ELECTRONIC DRIVE

An injection molding apparatus (10) comprising:a heatable manifold (40) arranged to receive molten injection fluid (18);one or more nozzles (20, 22, 24);a flow channel (19, 42, 44, 46) arranged to deliver the molten injection fluid to a gate (32, 34, 36) of a mold cavity (30);an electrical drive (940d, 941d, 942d) adapted to receive and distribute electrical energy in controllably varied amounts during an injection cycle;a valve pin (1040, 1041, 1042);an actuator (940, 941, 942) coupled to the valve pin, the actuator having:a driver (940dr, 941dr, 942dr), arranged to receive the controllably varied electrical energy from the electrical drive,an actuator housing (940h, 941h, 942h);a source of heat absorptive fluid (260, 125f); andat least one channel (25, 33, 125) formed in or proximate one or the other or both of the actuator housing (940h, 941h, 942h) and the drive mount (940ds, 941ds) wherein the heat absorptive fluid absorbs heat from one or the other or both of the actuator housing and the drive mount.