Analyzing the Operation of the Buffer Zone of a Single-Worm Machine as the Object of Control

According to (A.A. Tatarnikov and L.V. Burtelov, 2002) processing rubber mixtures in spite of their belonging to pseudoplastic mediums differs markedly from polymer melt processing. This difference lies in that the length of threaded part of the worm may be divided into three zones: pressure zone, buffer zone and supply zone. In pressure zone the worm is completely filled with the processed material. Supply zone is determined by geometrical dimensions of the funnel for material supply. Buffer zone is a transition zone between supply and pressure zones. Buffer zone changes its length depending on the length of pressure zone. Due to the fact that some part of worm channel may be filled partially with the processed material (the length of buffer zone) a single-worm machine Q_m productivity does not depend on material pressure in the head P_h (A.A. Tatarnikov and L.V. Burtelov, 2002).