| 摘要 |
PURPOSE:To still more enhance the durability of a mold and to obtain a product having higher commodity value of forming the cross-sectional shape of the end edge part present around the end surface of a columnar body on a movable side of a movable mold main body into a truncated wedge shape. CONSTITUTION:Clumnar bodies 3, 6 are respectively provided on both sides of movable and fixed molds 1, 4 constituted as separate bodies and the end surfaces 3a 6a of the respective columnar bodies 3, 6 are respectively subjected to mirror surface finish in order to smooth only the lens surface 14 of the goggle main body 13. The cross-sectional shape of the part (end edge part 2a) provided to the upper part of the movable mold main body of the injection mold thus constituted and held between the columnar body 3 on the movable side and a molding cavity 10 is formed into a truncated wedge shape. |
