| 摘要 |
PURPOSE:To improve productivity, uniformity in molding quality and reliability by automating stably control corresponding to molding quality, by correcting a controlled variable making a physical quantity variable through correction when a measured value in a physical room has exceded an allowable range in succession and the number of times of excess have arrived at the predetermined number. CONSTITUTION:A physical quantity affecting directly to molding quality is controlled by setting up an allowable range (m). The upper limit value SU and lower limit value SL controlling a width of the allowable range (m) and a position of the whole of the allowable (m) can be set up arbitrarily according to a kind of a molded product. When the most advanced position of a screw is changed also by changing molding surroundings such as raising of an oil temperature while automatic operation is continued, the value exceeds the upper limit value SU as per P40 of a drawing and that the number of times of the exesses are lasted continuously more than two times, correction is performed so as to make dwell force (controlled variable) in the next cycle small by issuing corrective instructions and making a control device (hydraulic pressure circuit) variable. The correction is performed similarly also when the value does not arrive at the lower limit value SL and the number of times of unarrivals are continued three times.
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