| 摘要 |
PURPOSE:To shorten a cleaning period of time of a runner, by providing a top force supported removably on a bottom platen side of a holder, or a movable support piece supporting a bottom runner plate which is fixed to a top force under a state where the bottom runner plate is suspended at the time of mold break. CONSTITUTION:In a case of cleaning of a runner 9, after a movable support piece 15 has been removed by pulling out of a holder 13 under a pressurized state 13, a bottom platen 2 is lowered. As the movable support piece 15 is not provided, a top force 3 and a bottom runner plate 6 are lowered according to a descent of the bottom platen 2. On the other hand, as an auxiliary plate 16 abuts against a stationary support piece 14, a top runner plate 7 is suspended without being capable of descending. In this instance, though the bottom runner plate 6 separates smoothly from the top runner plate 7 through an action of a second compression spring 18, the bottom runner plate 6 separates naturally from the top runner plate 7 through its empty weight even without the second compression spring 18. The top runner plate 7 and bottom runner plate 6 can be separated simply from each other and the runner 9 can be cleaned quickly by only removing the movable support piece 15 by performing neither removal of the top runner plate 7 from a top platen 1 nor disassembling of the top and bottom runner plates 6, 7.
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