| 摘要 |
PURPOSE:To improve lowering of the cost of a driving system and positioning accuracy of a chuck part, by making use of a low-cost capacitor-running induction motor as a driving source of an automatic removing device of a molded article. CONSTITUTION:A low-cost capacitor-running induction motor 6 is used as a driving source of a running unit 5 and a longitudinal running unit 9 making a chuck part 12 of an automatic removing device of a molded article move in an longitudinal and crossing directions. Electric energy to be supplied to the induction motor 6 is made variable by making PID operation through digital control of an angle of current flow of a first or second bidirectional opening and closing element based on an actual moving speed of a running unit of the induction motor 6 and a predetermined speed stored in a memory beforehand by making use of the induction motor 6. With this construction, the control of the speed and a position of the running units 5, 9 is performed effectively. |
