Sound feed rate of speed and high and low temperature changes, the machine has a very different issue. Plastic granulator need to practice constantly explore, to force the machine to keep running the best time in the sound state. Its main role is to make the system: control and regulation of the main and auxiliary drive motor, the output meet the technical requirements of speed and power, and make the main and auxiliary coordination; testing and adjusting the plastic extruder temperature, pressure, flow ; realization of the entire control unit or automatic control. Electrical control units made material is broadly divided into two transmission control and temperature control most, to realize the extrusion process, including temperature, pressure, screw rpm, screw cooling, barrel cooling, cooling and control products outside diameter, and traction speed, neat rows of lines and ensure the closing line from the empty plate to plate full plate of constant tension wire control.
Wire and cable insulation and jacketing of plastic extrusion is based on thermoplastic deformation characteristics, so that in the conduct of viscous flow state. In addition to the requirements of screw and barrel external heating, spread melted plastic to make it out, but also consider their own heat when the screw extrusion of plastic, thus requiring the temperature of the host should be considered as a whole, it is necessary to consider the heater on and off, but also consider the screw extrusion heat spillover factors to be cool to have an effective cooling facilities. And require proper and reasonable to determine the location of the thermocouple measuring element and installation methods, from the temperature gauge readings accurately reflect the actual temperature of each segment of the host. And require precision temperature control instrumentation and systems with the good, so that fluctuations in the stability of the entire primary temperature control system to achieve a variety of plastic extrusion temperature requirements. In order to reflect the situation head of extrusion, extrusion head pressure necessary to detect, since there is no domestic extruder head pressure sensor is a measure of the general thrust of the measure to replace the head pressure after screw extruder screw load table (ammeter or voltmeter) accurately reflect the size of the extrusion pressure. Extrusion pressure fluctuations, is also an important factor causing instability in the quality of extrusion, the extrusion pressure fluctuation is closely related with the extrusion temperature, the cooling device, the continuous operation time length and other factors. When abnormal phenomenon, to get rid of quickly ruled out, you must re-organization of production downtime should be decisive, not only to avoid waste increases, better prevention of accidents. By detecting the pressure gauge readings, you can know when the plastic extrusion pressure conditions, the general thrust limit alarm after taking control.