| 摘要 |
PURPOSE:To simplify an installation by providing the 3rd change-over circuit which outputs a signal from a torque setter to the 2nd motor in the 1st prescribed position of a moving table and a circuit which controls selectively the 1st and 2nd change-over circuits and controls selectively the 3rd change-over circuit in the 2nd prescribed position. CONSTITUTION:The position signal from a position detector 52 is supplied via a control device 59 to a speed pattern generator 53. The speed command set according to said signal is continuously emitted. The motor 39 runs at the speed command value. The speed is gradually decreased in the position where a moving die 6 moves near to an upper die 5. Selection switches 55, 58 are changed over to change over the control system to the 2nd speed control system at the point of the time when the speed coincides with the max. speed of the motor 44. The motor 44 is run at a low speed. The motor 44 is changed over to the torque control system when a selection switch 56 is changed over to the torque setter 64 side right after the contact of the moving die 6 with the upper die 5. The pressurizing forces of both dies 5, 6 are then maintained constant and the material to be molded is molded between the two dies. A screw shaft 36 is thereafter rotated backward by the motor 44 to release the pressurizing force of the die 6.
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