Method and apparatus for detecting the faulty operation of spinn

Details Method and apparatus for detecting the faulty operation of spinn Method and apparatus for detecting the faulty operation of spinn

1977-02-11

1981-01-27

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Monitor and record

57 81, 57264, 364470, 364552, D01H 1322, D01H 1332, G06F 1546

Patent

active

042467489

ABSTRACT:
A method and apparatus of detecting faulty operations of spinning units of an open-end spinning machine by monitoring the faults appearing in the yarn being produced by the machine and generating a fault signal responsive thereto. Another speed responsive signal is produced responsive to the speed that the yarn is being delivered from the spinning compartment of the machine. The fault signal is fed to a variable gain amplifier which has its gain controlled by the speed responsive signal. The signal produced by the amplifier is then differentiated, shaped, and integrated. The integrated signal is, in turn, compared with a threshold value for determining when the faults in the yarn exceed a predetermined level.

REFERENCES:
patent: 4007457 (1977-02-01), Aeppli
patent: 4060965 (1977-12-01), Schwartz

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