| 摘要 |
PURPOSE: A device to open and close nozzles for an injection molding machine is provided to extend lifetime and to improve durability by removing friction between devices because a rotary movement is converted to a vertical movement by a driving member. CONSTITUTION: A device (100) to open and close nozzles for an injection molding machine comprises a nozzle (11), a manifold (16), a body (110), a valve unit (120), and a driving unit (130). The body is fixed in the manifold to be positioned in an identical vertical line of an upper side of the nozzle and a flowing space (111) is formed inside. The valve unit is positioned in the flowing space and one side is protruded to the outside and is formed to vertically reciprocate to open and close an injection hole (12) of the nozzle. The driving unit is connected to the outside of the body in order to transfer power to the valve unit.
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