| 摘要 |
PURPOSE: A melting resin injection apparatus is provided to ascend and descend opening and closing valve pins by a plate for ascending and descending the opening and closing valve pins, thereby reducing the entire volume compared with a structure having the cylinder of a greater volume. CONSTITUTION: A manifold(40) has a plurality of manifold runners(41). The manifold runner is perpendicularly branched to the lower in order to function as the path of melted resin of a high temperature. An injection nozzle(20) has a plurality of injection nozzle runners(21) corresponding to the manifold runners. Opening and closing valve pins are installed by passing through the manifold perpendicularly. The opening and closing valve pins elevate through the injection nozzle runners perpendicularly. A plate(60) for ascending and descending the opening and closing valve pins is fixed to the upper end of the opening and closing valve pins. The plate transfers the driving force to the opening and closing valve pins by driving unit(70).
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