| 摘要 |
PURPOSE:To provided a titled controlling device by which the injection speed approximate to set values at all times and casting with high accuracy are obtained, by adjusting the opening of an injection valve automatically by arithmetic processing in accordance with the deviations between the speed data detected and stored together with the start of injection and a speed set value. CONSTITUTION:Sets of data on the set value of an injection speed, the sizes relating to dies, etc. are set in a data setter 14. An arithmetic device 20 operates the set value of such valve opening at which the set injection speed is obtained in the stage of actual casting in accordance with the data set in the setter 14. The opening of an injection valve 16 is adjusted 22 in such a way that the set value of the valve opening calculated with the arithmetic device 20 is attained. In the starting stage of injection, the speed data obtained by measuring the injection speed at every injection in a measuring device 10 for injection speed in accordance with the detection value obtained from the speed detector provided in an injection mechanism is stored 12. The arithmetic device 20 calculates the average value of the speed data from n-times of the speed data which is stored 12. The arithmetic device determines the deviation between the speed average value and the speed set value set in the setter 14, and corrects and calculates the set value of the valve opening having already been calculated. |
