| 摘要 |
PURPOSE:To prevent the change of the dimensions of molded products and the damage of a mold due to the fluctuation of mold clamping force and pressure keeping force, enabling the pressure control with excellent repeating property at high accuracy to be achieved by providing the control mechanism limiting the current passing through a servo-motor, comparing the pressure value detected by a pressure detector with a set pressure value. CONSTITUTION:A condition control mechanism 6 outputs the limited torque limitter command signal (voltage) S7 to a servo-motor driving mechanism 67, based on the first pressure set value inputted preliminarily. The pressure value S4 detected by the second pressure detector 48 detecting mold closing pressure, is compared with the first pressure set value. Because the torque limitter command signal (voltage) S7 is controlled based on said result, the current of an A.C. servo-motor 30 is regulated, and mold closing force is controlled at a specified value by the torque generated thereby. |
