抄録
The pattern of molding conditions and state variables, which consists of injection speed, pressure, specific volume and temperature of resin, determines the quality of moldings in an injection molding process. The demand for the pattern control is increasing in the field of the precise moldings. On the other hand, a desired value of the control system is too complicated to select automatically for several moldings to realize the precise pattern control.
The purpose of the study is to design a manmachine system in the injection molding process using a polygon graph, which is transformed from the desired value and the control value. The polygon graph is displayed as an operator can easily set and correct the value. The characteristics of resin and the dynamical model of the control system is also obtained for the transformation from the desired value to the polygon graph. The desired value is set and corrected, using the polygon graph through intuition and experience of an operator, and the method is effective for such a complicated control system as the molding process.
