| 摘要 |
In a screw mounting structure of an injection molding machine in which a screw is fixed to a screw driving portion which transmits a rotating force and forward and backward thrusts to the screw, a fixing bushing for restricting movement of the screw in a rotating direction is fixed to the screw driving portion. A guide groove is formed in the fixing bushing in a direction orthogonal to a rotary axis of the screw, and retainers slide along the guide groove and are engaged with an engaging groove in a base portion of the screw, thereby restricting axial movement of the screw.
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