| 摘要 |
PURPOSE:To raise the operational efficiency of injection molding by a method in which a cutting block to push and cut gates of a small thickness and a wide width by synergistic action with the cavity die body is attached to the core die body and elastically repelled when both of the dies are separated from each other. CONSTITUTION:resin injected from a sprue 11 is packed into a cavity 3 through a runner R and a gate G of a small thickness and a wide width. After the resin is hardened, when the core die body 2 is separated from the cavity die body 1, the product W is held on the core die body 2, and the gate G and the runner R are held on the cavity die body 1 through a cutting block 13 pressed by an elastic material 14. The gate G is cut off. An ejector pin 24 is projected by the first extruding plate 21 to project the product W, the ejector pin 27 is pushed out by contact with the second extruding plate 22, and the runner R is ejected and dropped. Therefore, the finishing of the product is improved by using film gate, etc., the cutting operation of the gate is not needed, and the operational efficiency of the molding is rasied. |
