US 4,095,156 AGranted

Device for automatic dimension control of extruded blanks

OwnerVladimir Alexeevich Borisov, Ravil Abdrakhmanovich Akhmedzhanov +1inventors

InventorsVladimir Alexeevich Borisov, Ravil Abdrakhmanovich Akhmedzhanov, Jury Vsevolodovich Chistyakov

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Abstract

A device for automatic dimension control of extruded blanks comprises a means for measuring the blank width, having its output connected to an input of a third adder whose second input is connected to a means for presetting the blank dimensions and whose output is connected to the input of an amplifier-converter, a motor for driving the screw of an extruder, with an extruder screw rpm sensor, a motor for driving a drawing-off device, with a draw-off speed sensor, a means for presetting the draw-off speed, a first adder whose inputs are connected, respectively, to a means for presetting the extruder screw rpm and to said extruder screw rpm sensor and whose output is connected, via a first amplifier, to said screw drive motor, a second adder whose first input is connected to said draw-off speed sensor and whose output is connected, via a second amplifier, to said drawing-off device drive motor, a nonlinearity unit, a compensator unit, and a fourth adder whose first input is connected to the output of the compensator unit having its input connected to the extruder screw rpm sensor, the second input of the nonlinearity unit being connected to the extruder screw rpm sensor and receiving a bias voltage, while the first input of the nonlinearity unit is connected to the output of the fourth adder, the output of the amplifier-converter is connected to the second input of the fourth adder, and the outputs of the nonlinearity unit and draw-off speed presetting means are connected to the first input of the third adder via a switch.

A device for automatic dimension control of extruded blanks, comprising:

ligght electrically
a means for measuring the blank width;
a means for presetting the blank dimensions;
a first, a second and a third adders;
said means for measuring the blank width having an output connected to an input of said third adder;
said third adder having a second input connected to said means for presetting the blank dimensions;
an amplifier-converter having an input connected to the output of said third adder;
an extruder screw drive motor;
socket when seperated
a sensor for measuring the extruder screw rpm, kinematically associated with said extruder screw drive motor;
a motor for driving an extrudate drawing-off device;
means.
a sensor for measuring the extrudate draw-off speed, kinematically associated with said drawing-off device drive motor;
a means for presetting the extrudate draw-off speed;
axis
inputs of said first adder, connected, respectively, to said extruder screw rpm presettting means and to said extruder screw rpm sensor;
a first and a second amplifiers;
sad first adder having an output connected, via said first amplifier, to said extruder screw drive motor;
said second adder having a first input connected to said draw-off speed sensor;
said second adder having an output connected, via said second amplifier, to said drawing-off device drive motor;
a compensator unit;
a fourth adder having a first input connected to the output of said compensator unit;
said compensator unit having an input connected to said extruder screw rpm sensor;
a nonlinearity unit having a first input connected to the output of said fourth adder and a second input connected to said extruder screw rpm sensor and receiving a bias voltage;
said amplifier-converter having an output connected to a second input of said fourth adder;
a switch;
said nonlinearity unit and draw-off speed sensor having outputs connected to a first input of said third adder via said switch.

24 more elements

Abstract

Claims1