JP2012131643A5 - - Google Patents

Claims (11)

A method of operating a winder (1) having a plurality of work unit portions (2) for winding one yarn (30) from a spinning cup (9) into a traverse package (11),
During running of the yarn (3 0), the sensor of one of measuring the amount representing the yarn tension (20),
A thread tensioner (14) for providing thread tension to the thread (30) is disposed;
In order to compare the measured amount (y) representing the yarn tension and the target value (v) of the amount representing the yarn tension, and to adjust the yarn tension depending on the comparison (e) Closed loop control of the yarn tension by generating an adjustment signal (u) for the yarn tensioner (14);
In the method of operating the winder (1), wherein after confirming the failure of one sensor (20), the yarn tension is controlled in an open loop,
Each detecting an amount representing the length of the yarn remaining in the spinning cup (9);
Depending on the length of the yarn remaining in the spinning cup (9), from the at least one adjustment signal (u) detected during winding with a closed-loop controlled yarn tension, the adjustment signal (u) Find experience points for
If one sensor (20) fails, the yarn tensioner (14) controls the open loop so that depending on the length of yarn remaining in the spinning cup (9), The empirical value for the obtained adjustment signal (u) is used as the adjustment signal (u).
A method of operating the winder (1). In order to obtain the experience value, an adjustment signal of a plurality of work unit parts is detected.
The method of claim 1. The length of the yarn wound from the spinning cup (9) is used as an amount representing the amount of yarn remaining in the spinning cup (9).
The method according to claim 1 or 2. If the sensor (20) of one work unit (2) fails, the experience value used for open-loop control of the yarn tension is the same before the sensor (20) fails. Obtained from an adjustment signal detected during winding of at least one spinning cup (9) of the work unit section,
The method according to claim 2 or 3. If the sensor (20) of one work unit (2) fails, the empirical value used for open-loop control of the yarn tension is calculated before the sensor (20) fails. From the adjustment signal detected during winding of the last spinning cup (9) of the work unit part (2) of
The method of claim 4. When the sensor (20) of one work unit (2) fails, the experience value used for open-loop control of the yarn tension is taken up by the work unit (2). An average value of the adjustment signals (u) of the plurality of spinning cups (9),
The method of claim 4. The empirical value used to open-loop control the yarn tension when the sensor (20) of one work unit part (2) fails is the same for multiple work unit parts (2) in the same lot. An average value of a plurality of adjustment signals (u),
The method according to claim 2 or 3. The experience value used for open loop control of the yarn tension when the sensor (20) of one work unit part (2) fails is the work unit parts (2) of the lot. Is the average value of the plurality of adjustment signals (u) detected when the last spinning cup (9) is wound up,
The method of claim 7. Display a failure of the sensor (20),
9. A method according to any one of claims 1-8 . During winding with closed loop controlled yarn tension, the winding speed is adjusted depending on the adjustment of the yarn tensioner (14),
Depending on the length of yarn remaining in the spinning cup, the empirical value for the winding speed is detected,
If the sensor (20) has failed, depending on the length of the yarn, wherein the remaining sets winding speed of the using the empirical values for the pre-determined winding speed,
The method according to any one of claims 1 to 9. A winder having a plurality of work unit portions (2) configured to wind the yarn (30) from the spinning cup (9) into the traverse package (11),
During running of the thread (30), a sensor of the one measuring the amount representing the yarn tension (20),
A thread tensioner (14) for providing thread tension to the thread (30) is disposed;
Control means (40, 50) for closed loop control of the yarn tension is provided,
The control means compares the measured amount (y) representing the yarn tension with the target value (v) of the amount representing the yarn tension, and depends on the comparison (e), Configured to generate an adjustment signal (u) for the yarn tensioner (14) to adjust the yarn tension;
In the winder, wherein the control means (40, 50) is configured to open-loop control the yarn tension when the sensor (20) fails.
The control means (40, 50)
In order to detect an amount representing the length of the yarn remaining in the spinning cup,
Depending on the amount representing the length of the yarn remaining on the spinning cop, the experience of at least one adjustment signal detected during winding by a closed loop control yarn tension (u), with respect to the adjustment signal (u) To determine the value and, if the sensor (20) fails, adjust at least a part of the experience value, depending on the quantity representing the length of yarn remaining in the spinning cup (9) Configured to open-loop control the yarn tension for the yarn tensioner (14) using as a signal (u),
Winder for implementing a method according to any one of claims 1 to 10.