| 摘要 |
<p>A method of correcting defective moulding in an injection moulding machine, wherein the defective moulding is restored to an acceptable moulding state with the help of an expert system on detection during mass prodn of a prod. When threshold values of moulding parameters, and information on corrective actions determined on the basis of the knowledge, experience of skilled people and corresp to the combinations of evaluations of these parameters, respectively, are manually input through a data input device (119), the threshold values and the information are prestored in a table of a memory (110) under the control of a processor (114). At the start of mass prodn an injection time, a metering time and a cushioning amt which have been measured or calculated during a moulding cycle, and resin pressures respectively corresp to screw positions at the time of gate passing and fill-up which have been manually set are set in the table as reference values of parameters. When a defective moulding is detected, the processor compares deviations between the respective parameter values, during a moulding cycle and the reference values with the threshold values to evaluate the respective parameters, and then, necessary ones of the parameter values constituting the moulding conditions are changed in accordance with corrective actions which are read out of the table as required by the combinationse of evaluated results. @(24pp Dwg.No.1/4)@.</p> |
