CONTROL SYSTEM FOR GLASS BENDING PLATEN

摘要

A closed loop control system for a hydraulically actuated glass sheet press bending platen. Flow of fluid supplied to the cylinder operating the press platen is controlled through a servo solenoid valve. A linear motion transducer is associated with the platen and sends appropriate signals to a programmable motion controller. The motion controller controls a position module operatively coumpled to the servo solenoid valve which regulates the flow of hydraulic fluid from a pump to the cylinder. The motion controller utilizes data from the linear motion transducer for making necessary corrections to insure that the platen cycles precisely in accordance with a predetermined program. In a second embodiment of the invention, the closed loop control system for the hydraulically operated platen is combined with a precision control of a variable speed glass sheet conveyor means for improved registry of the glass sheet being bent with the platen member.