The main function of twin-screw pelleting control system is to control the technical parameters of extruder screw speed ratio, barrel temperature and melting pressure in extrusion technology. At this stage, the surface control system, PLC control system as the main choice.
Single screw pelleting said that the functions between the two are respectively: temperature control in the surface control system can achieve control switch two manipulation, can also use intelligent surface to achieve simple proportional control, and PLC control system can achieve PID control according to analog communication;
Twin-screw pelleting says that the pressure control of the front one presents the melting pressure, and the back one presents the melting pressure and realizes the closed-loop control operation; The first test function only presents the function, and the latter one can realize the serial communication of the test module. The control system of plastic extruder is mainly composed of electrical equipment, surface and actuator. Its main functions are:
1, realize the intelligent operation of the whole equipment.
2. Collect and process statistical data to realize closed-loop control and manipulation.
3. Operate the rotary motor of the main and auxiliary machines, and ensure that the speed ratio and output power required by the technical regulations, and ensure that the main and auxiliary machines can operate in a regulated manner.
4.Double screw plastic granulator can be used in one machine, can replace the mixer or dryer
