Control system for controlling the outer diameter of a strand of

Details Control system for controlling the outer diameter of a strand of Control system for controlling the outer diameter of a strand of

1992-07-08

1996-03-12

Nguyen, Khanh P.

Plastic article or earthenware shaping or treating: apparatus

Including means advancing continuous length work through...

425141, B29C 4792

Patent

active

054981450

ABSTRACT:
A system for controlling the outer diameter of a strand, particularly of a cable or the like including a measuring device for measuring the outer diameter of the strand of plastic material emerging from the extruder. The signal of the measuring device is fed to a comparator which compares it with a reference diameter and generates a difference signal. A control unit receives the difference signal to control the rotational speed of the extruder and/or the speed by which the strand emerges from the extruder. A computing stage is connected to the control unit which generates a comparison signal modulated by the actual diameter signal and fed to the control unit.

REFERENCES:
patent: 3883279 (1975-05-01), Heyer
patent: 4551289 (1985-11-01), Schwab et al.
patent: 4605525 (1986-08-01), Baxter
patent: 4719808 (1988-01-01), Baumann et al.
patent: 4793788 (1988-12-01), Borger et al.
patent: 4882104 (1989-11-01), Dobrowsky
patent: 5169649 (1992-12-01), Sikora et al.

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