| 摘要 |
PROBLEM TO BE SOLVED: To provide a screw driving device for injection molding machine capable of preventing quality defects such as a yellowing of molding from occurring while preventing whirling of a screw. SOLUTION: In the screw driving device for electric injection machine, which has a composite pulley 21 for transferring driving force via a spline part 11a formed at the rear end part 4a of a screw 4 rotatably housed in a cylinder 9, a spline part 11b to be engaged with the spline part 11a of the screw 4 is formed at the composite pulley 21. By this constitution, it is unnecessary to join the pulley and a shaft having the spline formed thereon via a bushing as before, accordingly, such a situation never happens that the pulley inclines due to the order of tightening of a bushing fitting bolt. COPYRIGHT: (C)2006,JPO&NCIPI
|
