| 摘要 |
PURPOSE:To make it possible to simultaneously obtain a large number of molded items and at the same time facilitate the release of the molded item from molds by a method wherein the parting line of a cavity is provided obliquely to the direction of closing between a cavity plate and a core plate and, an ejector pin is provided on the core plate. CONSTITUTION:Molding is performed by pouring molten resin from a nozzle touch 53 through a pouring path 59 in the cavity 43 of an injection mold 31. At this time, since the parting line P is provided not perpendicularly but obliquely to the direction of closing or to axis line A, a force X acts obliquely to the axis line a, resulting in allowing to make the component Y in the direction of the axis line A of the force X smaller than the force X, and consequently to make the necessary mold closing force per cavity smaller. As a result, the provision of two cavities in one pair of molds becomes possible and accordingly the molding efficiency can be enhanced. Next, when the resin in the cavity 43 solidifies, the mold is opened and an ejector pin rod 63 is ejected in order to release a molded item M from the mold. |
