An injection molding device includes an injection machine, a molding die, and a high frequency oscillation device. The injection machine injects a resin material containing a dielectric heat generating material while keeping fluidity by temperature control. The molding die includes a cavity being a channel of flow of the resin material, and a pair of electrodes, each of which faces the cavity, the pair of electrodes being disposed to sandwich the resin material therebetween in a direction crossing a direction of the flow. The high frequency oscillation device applies a high frequency alternate-current voltage to the pair of electrodes.

A molded resin component includes a first surface on which a convex portion is formed, and a second surface opposite to the first surface. The convex portion includes a molding mark formed by a valve pin of a manufacturing apparatus that manufactured the molded resin component. A shape of at least a portion of a leading-end surface of the valve pin is not transferred into the molding mark.

A cooling plate for an injection molding machine includes a plate body, a plurality of sockets in the plate body for receiving respective spigot portions of a plurality of cooling tubes, and a cooling fluid conduit system in the plate body for cooling the cooling tubes. The cooling plate further includes an air conduit system in the plate body for providing air flow communication with the cooling tubes. Each socket forms a blockable flow passage between the cooling fluid conduit system and the air conduit system.

An injection molding apparatus (10) comprising an actuator (940, 941, 942) comprised of a driver (940dr, 941dr, 942dr) receiving electrical energy or power from an electrical drive (940d, 941d, 942d), the electrical drive (940d, 941d, 942d) comprising an interface that receives and controllably distributes electrical energy or power in controllably varied amounts during the course of an injection cycle to the driver (940dr, 941dr, 942dr), the electrical drive (940d, 941d, 942d) being housed within or by an actuator housing (940h, 941h, 942h) or being mounted on or to the housing (940h, 941h, 942h), the housing (940h, 941h, 942h) and the electrical drive (940d, 941d, 942d) being mounted on, to or in close proximity to the heated manifold (40), a cooling device (940mc, 940mc1, 940mc2, 941mc, 942mc) disposed between the heated manifold (40) and the housing (940h, 941h, 942h) adapted to substantially isolate or insulate at least the electrical drive (940d, 941d, 942d) from substantial communication with heat emanating or emitted from the heated manifold (40).

An injection molding apparatus (10) comprising an actuator (940, 941, 942) comprised of a driver (940dr, 941dr, 942dr) receiving electrical energy or power from an electrical drive (940d, 941d, 942d), the electrical drive (940d, 941d, 942d) comprising an interface that receives and controllably distributes electrical energy or power in controllably varied amounts during the course of an injection cycle to the driver (940dr, 941dr, 942dr), the electrical drive (940d, 941d, 942d) being housed within or by an actuator housing (940h, 941h, 942h) or being mounted on or to the housing (940h, 941h, 942h), the housing (940h, 941h, 942h) and the electrical drive (940d, 941d, 942d) being mounted on, to or in close proximity to the heated manifold (40), a cooling device (940mc, 940mc1, 940mc2, 941mc, 942mc) disposed between the heated manifold (40) and the housing (940h, 941h, 942h) adapted to substantially isolate or insulate at least the electrical drive (940d, 941d, 942d) from substantial communication with heat emanating or emitted from the heated manifold (40).

A method of manufacturing an optical component having micro-structures is described. The method detects a crystallization temperature within a crystallization temperature interval for fully filling the molding material into a mold cavity to rapidly produce the optical element having a micro-structure with a large area.

A method of manufacturing an optical component having micro-structures is described. The method detects a crystallization temperature within a crystallization temperature interval for fully filling the molding material into a mold cavity to rapidly produce the optical element having a micro-structure with a large area.

The present invention relates to micro-/nanostructured compound-eye arrays and fabrication method thereof, and discloses a fabrication method and applications for the molded polymer parts with the micro-/nanostructured compound-eye arrays on their surfaces, which exhibit both hydrophobicity and light trapping. The fabrication method for the molded polymer parts with the micro-/nanostructured compound-eye arrays includes following steps. A flexible microlens array template is assembled; the flexible microlens array template is fixed on an injection mold cavity, and a polymer part with microlens arrays distributing on its surface is molded by using injection molding; the microlens arrays on the molded polymer part are imprinted onto the surface of an ultra-pure aluminum foil, nanopores are formed on its surface via anode oxidation, and so an aluminum template with negative micro-/nanostructured compound-eye arrays is fabricated; the aluminum template is fixed on an injection mold cavity, and a polymer part with micro-/nanostructured compound-eye arrays distributing on its surface is molded by using injection molding. The dual-level compound-eye arrays (orderly distributed convex semi-sphere microlens and densely distributed nanopillars) are developed on the surface of the molded polymer part, which exhibits both hydrophobicity and light trapping.

An injection molding device (1) includes a center part (3) and a rotating device (2) for rotating the center part (3) in the injection molding device (1). The rotating device (2) includes a base (4) supported with respect to an injection molding machine. A thereto attached column (5) extends in an axial direction (z) above the base (4). A sleeve (6) coaxially surrounds the column (5) and is at least partially arranged in the center part (3). The sleeve (6) rotates with the center part (3) around the column (5). The column (5) is arranged removable with respect to the center part (3).

A machine including a mold which delimits an overmolding cavity, for receiving a hollow portion of a bi-material part, cooling means along the overmolding cavity, a core positionable inside the hollow portion and containing heating means for bringing the core to a heating temperature higher than 150° C., and an injector injecting an overmolding material, formed by the core and the hollow portion, for forming an inner portion of the bi-material part. In order to obtain the overmolded inner portion even if the hollow portion has poor heat resistance, the cooling means maintain the overmolding cavity at a cooling temperature lower than 110° C. while the core is brought to the heating temperature, while the overmolding material has been injected by the injector into the overmolding cavity.