Preservation pressure control device of electromotive type injection molding machine

摘要

(57) Abstract (Modified) Objective In the final stage of preservation pressure control the ejection screw the placeIt designates that it makes home position halt as purpose. Constitution The servo-motor which advances the ejection screwThe controller 28 which controls operation and aforementioned ejection sukuTo have with the position detection means 27 which detect the position of riyu, beforeAs for description controller 28, at the time of preservation pressure aforementioned servo-motorThe speed system which controls resin pressure by controlling speedBeing based on information from circuit M2 and aforementioned position detection means,The position control circuit M1 which controls the speed of the aforementioned servo-motorWith, speed command value and the aforementioned rank which are based on the preservation pressure command signal at the time of preservation pressureThe speed finger which is based on the information of the position where it is output from the position control circuit M1To compare with value, on the basis of the comparison the aforementioned both control timeChooses the path alternative the speed switching circuit 29 which facilitiesIt features that the ke and others re te it is.