Yarn tension sensor for a textile machine

Details Yarn tension sensor for a textile machine Yarn tension sensor for a textile machine

1992-09-04

1994-07-19

Chilcot, Jr., Richard E.

Measuring and testing

Dynamometers

Responsive to force

73862391, G01L 100

Patent

active

053298225

ABSTRACT:
The invention to a yarn tension sensor, in particular for yarns traveling at high speed, to accurately ascertain even short-term yarn tension fluctuations. According to the invention, a yarn guide element is mounted on one head end of a plunger coil disposed in a magnetic field. A position sensor is disposed in the region of the plunger coil and detects even minimal changes in position of the plunger coil. These changes in position are reported to a controller, at whose output variations in current are generated and supplied to the winding of the plunger coil, the variations being such to compensate for the axial force generated by the yarn and acting upon the plunger coil, thereby making the plunger coil virtually motionless.

REFERENCES:
patent: 2767576 (1956-10-01), Seney
patent: 3403553 (1968-10-01), Wiener

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