| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection molding device in which defects such as a weld line hardly occur only by the opening-closing operation of a gate in a multipoint gate system to a large cavity in injection molding.SOLUTION: Provided is an injection molding device 1 comprising: a center nozzle 15 arranged coaxially with a sprue bushing 4; an arm 9 passing through the prue bushing 4 in the radial direction; a plurality of fluid pressure cylinders individually connected to the respective edge parts of the arm 9; a valve stem 20 whose rear end is fixed to the central part of the arm 9; a plurality of side nozzles 16; and a side fluid pressure cylinder 26. |
