| 摘要 |
PROBLEM TO BE SOLVED: To obtain an injection mechanism free from a stick-slip motion by lowering the resistance to movement of a movable plate. SOLUTION: Tie rods 4 are connected between a front plate 1 to which an injection cylinder 2 is fitted and a rear plate 3. The movable plate 6 to which an injection screw 5 is fitted rotatably is moved, guided by the tie rods 4. The tie rods 4 are provided respectively with ball spline shafts 31. The movable plate 6 is provided with ball spline nuts 30a and 30b which are connected with the ball spline shafts 31. When the movable plate 6 moves in an injection process and a metering process, it slides, guided by the ball spline connection. Therefore the resistance to movement is small and no stick-slip motion occurs either. COPYRIGHT: (C)2005,JPO&NCIPI
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