FIELD: production of synthetic fibers. SUBSTANCE: extruder melt duct 1 comprises pressure transmitter 3 electrically-connected with proportional-integral regulator 4 whose output 5 is connected to the input 6 of the speed control unit 7 of the auger drive motor by means of opening contacts 9 and 10 of the position electric contact regulators of minimum and maximum pressure 11 and 12, respectively. The first input 13 of the position electric contact regulator of minimum pressure 11 is connected with the melt duct outlet while the second input 14, with the "minimum" pressure setter 15, the third input 16, with the "normal" pressure setter 17, the input 18 of the position electric contact pressure regulator 12 is connected with the other output of the extruder melt duct, the second input 19, with the "maximum" pressure setter 20, the third input 21, with the "normal" pressure setter 22; it also comprises an intensity regulator 23 with auger motor speed setter 24, additional input 25 of the control unit 7, minimum speed setter 26 and maximum speed setter 27, input 28 of the intensity regulator 23 is connected by closing contact 29 of electric contact regulator with minimum speed setter 26, the input 30 of the intensity regulator is connected with setter 27 by the closing contact 31, adding amplifier 32 and speed regulator 33. EFFECT: improved design. 2 dwg
