| 摘要 |
The injection device according to the present invention includes a screw ( 1 ) formed in the vertical direction, a screw advancing/retracting AC servo motor ( 41 ) for screw for generating a torque by rotating a rotor ( 412 ), and a driving force converting unit ( 42 ) for converting the torque to a linear driving force to move the screw ( 1 ) in the vertical direction, the AC servo motor ( 41 ) including a first brake unit for maintaining the rotor ( 412 ) in the rest state. By actuating the first brake unit, movement of the screw ( 1 ) in the vertical direction due to the tare weight can be prevented.
|
