Patent ID: 9056408
Filing Date: 2015-06-16
Classification: B29C,B29D,F21V,G02B

Abstract:
1. An injection molding machine that molds an LED illumination housing, comprising: a fixing mold formed in a U-shaped cross section, and including a first mating surface and a cavity extending inwardly from the first mating surface; a moving mold that is fitted to the fixing mold, and including a second mating surface and a core portion extending from the second mating surface; and a driving mechanism that brings the moving mold into contact with the fixing mold and separates the moving mold from the fixing mold; and a material supply mechanism that injects resin of a molten state into a cavity configured when the fixing mold and the moving mold are fitted to each other, wherein, when the driving mechanism brings the moving mold into contact with the fixing mold, the core portion is inserted in the cavity so that the first mating surface comes into contact with the second mating surface, wherein the cavity has a bottom surface which faces a tip surface of the core portion with a gap when the core portion is inserted in the cavity, and wherein a plurality of concave and convex portions is provided on the bottom surface so as to form concave and convex portions on the LED illumination housing which diffuse light transmitted through the LED illumination housing.