device to control the speed and the staudruckes the plasticising and dosiervorgang a plastic schneckenspritzgießmaschine

摘要

In a method of and apparatus for controlling the plasticizing process of a resin of an in-line screw- type injection molding machine, the position of the screw (14) is continuously detected in accordance with its movement and a control function is determined on the basis of one of various factors, such as resin heating energy, shearing energy, injection pressure and filling speed, which determine the temperature distribution of the resin to be injected. The operating program, particularly the number of revolutions and the back pressure of the screw, is controlled on the basis of the control function and the screw position so as to make uniform the temperature distribution of the resin. IMAGE