Process and apparatus for determining the yarn speed on textile

Details Process and apparatus for determining the yarn speed on textile Process and apparatus for determining the yarn speed on textile

1990-06-05

1991-12-24

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

B65H 6300

Patent

active

050744801

ABSTRACT:
A yarn is wound onto a generally conical yarn package using a cam cylinder to traverse the yarn back and forth between the ends of the package. A first sensor is used to determine the rotational position of an element which is rotating synchronously with the package. The position of the yarn lengthwise of the package is determined using a second sensor. A correction factor is obtained for determining an instantaneous yarn feeding speed from an average yarn speed value obtained from the peripheral speed of the rotating element. The improved yarn speed determination enables on-line spectrograms to be provided on yarns handled in these machines. Also, there is considerably greater accuracy when measuring lengths of yarn defects.

REFERENCES:
patent: 3258824 (1966-07-01), Gith
patent: 3592400 (1971-07-01), Gith
patent: 3739996 (1973-06-01), Matsui et al.
patent: 3801031 (1974-04-01), Kamp et al.
patent: 4024645 (1977-05-01), Giles
patent: 4214717 (1980-07-01), Makino et al.

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