Abstract: A management method for fiber-processing and a management apparatus thereof, which can detect the occurrences of the selected monitoring events by monitoring the occurrences, can investigate the causes of the occurrences of the events by treating the events so that the factors of the occurrences of the problems can be easily determined whether they are attributable to the problem of the fiber-processing machine itself or the problem of supplied yarn, and can promptly accurately present countermeasures against the problems.

Abstract: A yarn breakage position detecting device and method of detecting a yarn breakage position involves a running yarn tension detector arranged at a reference position and that outputs a tension signal by which occurrence of yarn breakage is detected, and passage of the end of a broken yarn through the reference position is then calculated based on the time period from occurrence of yarn breakage to passage of the broken yarn end through the reference position. The yarn breakage time is stored as a time at which the tension signal becomes a peak value and/or a time at which the tension signal begins to decrease below a steady state tension value. The time when the yarn passes through the reference position is stored as a time at which the tension signal becomes lower than a lower limit value and/or a time at which natural oscillation begins.

Abstract: Yarn breakage position detecting method and device. The device includes a tension detector arranged at a reference position, to monitor tension of a running yarn, so that from a tension signal output by the tension detector, occurrence of yarn breakage is first detected and passage of the end of a broken yarn through the reference position is then detected. The yarn breakage position is calculated based on the time period from occurrence of yarn breakage to passage of the broken yarn end through the reference position. The time when the yarn is broken is stored as a time at which the tension signal becomes a peak value and/or a time at which the tension signal begins to decrease below a steady state tension value. The time when the yarn passes through the reference position is stored as a time at which the tension signal becomes lower than a lower limit value and/or a time at which natural oscillation begins.

Abstract: A management method for fiber-processing and a management apparatus thereof, which can detect the occurrences of the selected monitoring events by monitoring the occurrences, can investigate the causes of the occurrences of the events by treating the events so that the factors of the occurrences of the problems can be easily determined whether they are attributable to the problem of the fiber-processing machine itself or the problem of supplied yarn, and can promptly accurately present countermeasures against the problems.