US 2022/0282416 A1 · Yarn Tension and Breakage Sensor System

Abstract

A yarn monitoring system for textile machines uses sensors to indicate yarn over-tensioning and breakage. The sensors within eyelets monitor the passage of the yarn and send raw signals to the controller. The eyelets, each with a sensor, are within a body containing a circuit board which is in constant communication with the sensors and software contained within a controller. The controller is in constant communication with the textile machine. The software contains an acceptable operational zone for raw signal data and control limits establishing the lowest raw signal data reading permitted for the yarn. The user establishes set points for the control limits, and reaching these set points is an indication over-tension or yarn breakage. To prevent unnecessary shut down of the machine, the software averages the raw signal data and, when the raw signal average remains out of the established set points, initiates communication to the textile machine.

Claims14

Dependent claims

A system for monitoring tension and breakage of yarn in a textile machine having:

a sensor bar containing multiple eyelets to receive the yarn, each of the multiple eyelets containing at least one sensor to generate raw signals as the yarn passes through the eyelet;
and
a microprocessor containing software, said microprocessor being in communication with each of the sensors to receive and analyze the raw signals created by the yarn motion, said microprocessor being in two-way communication with the textile machine, and comprising the steps of:
a. entering user defined broken yarn set point;
b. entering user defined tight end set point;
c. starting the machine;
d. initiating by the software a predefined empirical broken end control limit;
e. initiating by the software a predefined empirical tight end control limit;
f. scanning each of the sensors;
g. transmitting raw signals from each of the sensors to the microprocessor;
and
h. analyzing raw signals from each of the sensors to generate raw signal data.

9 more elements

A computer-implemented method for monitoring tension and breakage of yarn in a textile machine having a plurality of sensors in communication with a microprocessor comprising:

a. entering user defined broken yarn set point into said microprocessor;
b. entering user defined tight end set point into said microprocessor;
c. starting the machine;
d. running software on said microprocessor to initiate a predefined empirical broken end control limit;
e. running software on said microprocessor to initiate a predefined empirical tight end control limit;
f. scanning each of the sensors;
g. transmitting raw signals from each of the sensors to the microprocessor;
h. analyzing raw signals from each of the sensors to generate raw signal data;
i. comparing the raw signal data to the predefined empirical broken end control limit;
j. determining if the raw signal data are above the predefined empirical broken end control limit;
k. calculating a raw signal average based on the raw signal data above the predefined empirical broken end control limit;
l. adding the raw signal data above the predefined empirical broken end control limit to said raw signal average for an updated data average;
m. comparing the updated data average to the predefined tight end empirical control limit;
n. initiating step f when data is above the predefined empirical tight end control limit.
o. issuing a tensioned yarn command to the machine when the raw signal data is below the tight end control limit for a number of consecutive raw signal average readings defined by said tight end set point;
p. issuing a broken yarn command to the machine when the raw signal data is below the control limit for a broken end for a period of time defined by said broken end set point;
wherein the raw signal data below the tight end control limit number of readings defined by said tight end set point initiate a stop command from the microprocessor to the textile machine, and
wherein the raw signal data below the broken end control limit for a period of time defined by said broken end set point initiate a stop command from the microprocessor to the textile machine.

15 more elements

Dependencies are inferred from the claim text.

Yarn Tension and Breakage Sensor System

Life of this patent

Yarn Tension and Breakage Sensor System

Life of this patent

Abstract

Claims14