Abstract: To provide a moldingl die apparatus wherein simultaneous molding of two or more molded products of different sizes can be carried out. An apparatus for molding of resin products includes a pair of mutually confronting metal dies (30, 50) that are moveable toward and away from each other, molding surfaces or portion (32 (34), 52, (54)) that cooperate in forming mold cavities and resin path (70) that lead injected molten resin from an injection machine to the cavities provided in the metal dies. Two or more cavities C16, C26 of different capacities are provided in the metal dies (30, 50). Simultaneous molding of two or more different resin products (16, 26) with the single molding apparatus increases the production efficiency of the resin products and reduces the production costs. Further, the installation space for the molding equipment, such as the molding apparatus, can be reduced.

Abstract: A resin-made vehicular lighting unit having protruding portions is formed in a mold apparatus. The mold apparatus includes first and second molds which are used to form a cavity for resin-molding the vehicular lighting unit. Recessed portions are formed in the first mold and are used to form the protruding portions on a front surface side of the vehicular lighting unit. The second mold includes projecting members, each of which correspond to the recessed portions of the first mold.

Abstract: A vehicular lighting unit, free from weld lines and "sink marks", in a lens having aiming pads, including recessed parts, provided in the backs of the aiming pads. The recessed parts are made similar in outer configuration to the aiming pads by providing a uniform thickness of the aiming pads, formed on a lens, which protrude from the lens along the surface configuration. Two molds are provided, with a recessed portion, and a projection, respectively, and the recessed portion is supplied with a through-hole, with an insert pin passed therethrough, so as to prevent disturbances in the flow of resin in the aiming pad, trapping of air, an increase in wall-thickness and generation of weld lines and "sink marks.