| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a screw attachment structure of an injection molding machine having good workability on replacement of a screw and being capable of coping with cases where the size of the screw drive is small. <P>SOLUTION: In the screw attachment structure, a notch 12 serving as an engagement groove for a retainer 50 is disposed in the outer periphery of the base of a screw 10 so as to engage the retainer for regulation of the movement of the screw in the axial direction with the notch, and a fixing bush 30 which has a hole provided with a key or spline for insertion of the base of the screw and regulates the movement of the screw in the rotational direction is fixed to the screw drive 70. Guide grooves 32 for sliding of the retainer arranged in the direction perpendicular to the rotation axis of the screw are disposed in the fixing bush and/or the screw drive, and a fixing bush fixing bolt 31 which inserts the retainer into the guide groove to fix both the retainer and the fixing bush is arranged in the fixing bush. <P>COPYRIGHT: (C)2013,JPO&INPIT |
