<p>A resin molding apparatus that without the use of any lubricant, realizes smooth opening and closing of metal mold, thereby attaining production of high-precision molded items. There is provided a resin molding apparatus comprising mobile-side platen (35) retaining mobile-side metal mold (30) connected via tie bars (40) to fixed-side platen (25) retaining fixed-side metal mold (20) and comprising bushes (36) disposed in the mobile-side platen (35) which are movable along the tie bars (40). At least either the outer circumferential surface of the tie bars (40) or the inner circumferential surface of the bushes (36) is provided with low-friction surface treatment.</p>
