| 摘要 |
An injection unit of an injection molding machine capable of preventing a displacement of an axis of a heating barrel and an axis of an injection screw and facilitating a nozzle axis adjustment. A front plate supporting a heating barrel is fixed to a base with a height-adjusting mechanism located in-between. A rear plate is connected to the front plate by connecting members symmetrically arranged. The injection screw inserted in the heating barrel is rotatably supported by a pusher plate to which a ball nut is fixed. A ball screw engaged with the ball nut is rotatably supported by the rear plate. The pusher plate is supported and guided by the support/guide member, and moves forward to inject resin by the rotation of the ball screw. The support/guide member is supported by a supporting member fixed to the front plate. Being independent of the connecting members that are deformed to be elongated at the time of the injection, the pusher plate remains uninfluenced, making it possible to prevent the displacement of the axes of the heating barrel and the injection screw.
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