SU1476304A2 - Method of determining irregularity of filament - Google Patents
Method of determining irregularity of filament Download PDFInfo
- Publication number
- SU1476304A2 SU1476304A2 SU874288441A SU4288441A SU1476304A2 SU 1476304 A2 SU1476304 A2 SU 1476304A2 SU 874288441 A SU874288441 A SU 874288441A SU 4288441 A SU4288441 A SU 4288441A SU 1476304 A2 SU1476304 A2 SU 1476304A2
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- SU
- USSR - Soviet Union
- Prior art keywords
- thread
- periodic
- determining
- unevenness
- elongation
- Prior art date
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Изобретение относитс к измерительной технике текстильной промышленности. Цель изобретени - повышение точности определени неровноты путем учета в зкоупругих свойств нити. Характерной особенностью изобретени вл етс то, что при определении неровноты нити учитываетс величина фазового запаздывани между амплитудами удлинени нити и вызвавшего его раст гивающего усили . 1 ил.The invention relates to a measurement technique of the textile industry. The purpose of the invention is to improve the accuracy of determining the unevenness by taking into account the viscoelastic properties of the thread. A characteristic feature of the invention is that in determining the unevenness of the thread, the magnitude of the phase delay between the amplitudes of the elongation of the thread and the tensile force causing it is taken into account. 1 il.
Description
1one
Изобретение относитс к измерительной технике текстильной промышленности.The invention relates to a measurement technique of the textile industry.
Цель изобретени - повышение точности определени неровноты путем учета в зкоуп- ругих свойств нити.The purpose of the invention is to improve the accuracy of determining the unevenness by taking into account the unique properties of the thread.
На чертеже представлено устройство дл реализации предлагаемого способа.The drawing shows a device for implementing the proposed method.
Способ осуществл ют следующим образом .The method is carried out as follows.
Проход щую нить 1 наход щуюс предварительно под воздействием посто нного нат жени в первой измерительной зоне, подвергают периодическому раст жению за счет прогиба нити с помощью эксцентрика 3 во второй зоне, ограниченной двум парами транспортирующих роликов 2, и непосредственно измер ют нат жение с помощью датчика 4, а также удлинение нити. Периодическое раст жение нити осуществл ют с частотой , превышающей частотный спектр нат жени в первой зоне, а измерение переменной составл ющей нат жени нити производ т с помощью фильтра 5, настроенного на частоту вращени эксцентрика. Датчиком 6 измер ют толщину нити.The passing thread 1 previously subjected to constant tension in the first measuring zone is subjected to periodic stretching due to the deflection of the thread with the help of an eccentric 3 in the second zone bounded by two pairs of transporting rollers 2, and the tension is directly measured by means of a sensor 4, as well as the elongation of the thread. Periodic stretching of the thread is carried out with a frequency exceeding the frequency spectrum of the tension in the first zone, and the measurement of the variable component of the tension of the thread is carried out using a filter 5 adjusted to the frequency of rotation of the eccentric. The sensor 6 measures the thickness of the thread.
Дополнительно измер ют фазовое запаздывание у, пропорциональное времени между возникновением периодического удлинени нити и вызвавшим его периодическим усилием раст жени .In addition, a phase lag is measured, proportional to the time between the occurrence of a periodic elongation of the thread and the periodic tension that caused it.
Совместна математическа обработка этих величина на ЭВМ 7 позвол ет получить информацию о неровноте (Н) нити и ее в зкоупругих свойствах в соответствии с формулойThe joint mathematical processing of these quantities on a computer 7 provides information about the unevenness (H) of the thread and its viscoelastic properties in accordance with the formula
с Swith s
(Л(L
сwith
н-Ai- п dn-Ai- n d
гдеWhere
АBUT
модуль отношени периодического удлинени нити к вызвавшему его периодическому усилию раст жени ;the modulus of the ratio of the periodic elongation of the thread to the periodic tension that caused it;
Т - фазовое запаздывание, пропорциональное времени между возникновением периодического удлинени нити и вызвавшим его периодическим усилием раст жени ; « - толщина нити.T is the phase delay proportional to the time between the occurrence of a periodic elongation of the thread and the periodic tension that caused it; "- the thickness of the thread.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874288441A SU1476304A2 (en) | 1987-07-22 | 1987-07-22 | Method of determining irregularity of filament |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874288441A SU1476304A2 (en) | 1987-07-22 | 1987-07-22 | Method of determining irregularity of filament |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1272096 Addition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1476304A2 true SU1476304A2 (en) | 1989-04-30 |
Family
ID=21321065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU874288441A SU1476304A2 (en) | 1987-07-22 | 1987-07-22 | Method of determining irregularity of filament |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1476304A2 (en) |
-
1987
- 1987-07-22 SU SU874288441A patent/SU1476304A2/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 1272096, кл. G 01 В 5/30, 1982. * |
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