Patent Document ID: 8060240
Application ID: 11975282
Patent Flag: 1

Claim One:
1. A method for controlling injection molding using a neural network in a control device of an injection molding machine, the injection molding control method comprising the steps of: acquiring a measurement monitor value in a measurement step during test injection molding and an injection monitor value in an injection step, designating the acquired measurement monitor value as an input term and the injection monitor value as an output term, and determining a prediction function using the neural network that incorporates the measurement monitor value; predicting a first value corresponding to the injection monitor value by substituting into the prediction function a measurement monitor value acquired at completion of a measurement step during mass-production injection molding; determining on the basis of the predicted first value a second value corresponding to an injection condition; and implementing injection control and pressure maintenance control on the basis of the second value corresponding to the injection condition; wherein the measurement monitor value in the test injection molding and the mass-production injection molding includes at least one of a measurement starting position corresponding to a screw position of a screw of the injection molding machine at the start of measurement, a measurement time corresponding to a time from the start of measurement to the end of measurement, a measurement torque corresponding to a twisting torque applied to the screw, a cycle time corresponding to a single cycle time from the start of measurement in a certain test molding to the start of measurement in a subsequent test molding, a measurement stop position corresponding to a screw position of the screw at the end of measurement, and a heating cylinder temperature corresponding to an average value of the heating cylinder temperature in a measurement.