| 摘要 |
PURPOSE:To obtain the titled device enabling to easily exchange between a 2- plate type and a 3-plate type, provided with a change-over member for changing over between the first runner part extending from a sprue part of a fixed metallic mold fitting hole and the second runner part extending to the back side of the fitting hole. CONSTITUTION:When changing over from the 2-plate type to the 3-plate type, a sprue-fitting plate 21 is removed, and a hot runner 14 provided at a fixed metallic mold supporting plate 4 is removed. A runner distributing plate provided at the back side thereof with the runner part 16a extending to the second runner 16 is fitted, thereby closing a resin passage extending to the first runner 15. A sprue bush 43 is fitted into fitting holes provided in a runner stripper plate 17 and a fixed-side fitting plate, and the bush 43 is provided with a hot sprue 14a so that the tip of the sprue 14a faces the runner part 16a. |
