Method and device for monitoring the soundness and quality of a twisted yarn
AssigneeSavio Macchine Tessili S.p.A.
InventorsRoberto Badiali, Mario Marascutti, Vittorio Colussi
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Abstract
The present invention provides a method for monitoring the soundness and quality of a twisted yarn produced in a double twist spindle of a twisting frame. The invention also provides a device for implementing said monitoring of the soundness and quality of the twisted yarn which is produced in the spindle and undergoes the movement necessary to feed the bobbin under formation.
Claims5
A method of monitoring the quality of a twisted yarn moving in a path from a double twist spindle, wherein the twisted yarn has a plurality of yarn plies, and wherein the method comprises:
- a) detecting the presence of the twisted yarn as it undergoes circular movement transverse to its path by an optical detection means, and generating a signal corresponding thereto;
- b) splitting said generated signal into a first signal and a second signal;
- c) converting said first signal into binary logic pulses for measuring the amount of yarn twist per unit time;
- d) converting said second signal into digital form for subsequent digital processing;
- and
- e) transmitting said converted first signal and said converted second signal to a processing means for determining if the twisted yarn is within a predetermined quality range.
A device for monitoring the quality of a twisted yarn moving in a path from a double twist spindle, wherein the twisted yarn has a plurality of yarn plies, and wherein the device comprises:
- a) detection means for detecting the presence of the twisted yarn as it undergoes circular movement transverse to its path and generating a signal corresponding thereto;
- b) splitting means for splitting said generated signal into a first signal and a second signal;
- c) first converting means for converting said first signal into binary logic pulses for measuring the amount of yarn twist per unit time;
- d) second converting means for converting said second signal into digital form for subsequent digital processing;
- and
- e) transmitting means for receiving and transmitting said converted first signal and said converted second signal to a processing means for determining if the twisted yarn is within a predetermined quality range.
Dependencies are inferred from the claim text.