Process for controlling the fabrication process and apparatus to carry out this process

摘要

To control a production process, and especially pressed blown glass, a control curve is produced by a personal computer (PC) to give a controlled press die movement for pressure by time through a proportional valve. The control curve is produced by a program, giving the ideal pressure/time development according to the machine conditions. The ideal curve data are passed in a routine repetitive communication with the proportional valve, to be stored for access.