SU632773A1 - Method of feeding weft thread on pneumatic loom - Google Patents
Method of feeding weft thread on pneumatic loomInfo
- Publication number
- SU632773A1 SU632773A1 SU772492328A SU2492328A SU632773A1 SU 632773 A1 SU632773 A1 SU 632773A1 SU 772492328 A SU772492328 A SU 772492328A SU 2492328 A SU2492328 A SU 2492328A SU 632773 A1 SU632773 A1 SU 632773A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- weft thread
- weft
- feeding weft
- thread
- pneumatic loom
- Prior art date
Links
Landscapes
- Looms (AREA)
Description
Изобретение относитс к текстиль ной промьшшенности и может быть использовано дл подачи уточной нити на пневматических ткацких станках. Известен способ подачи уточной н ти на пневматическом ткацком станке включающий прот гивание отмеренных участков уточной нити через нитенат житель и прокладывание их.воздушной струей в конфузорном канале, реализуемый в устройстве дл непрерывного отмеривани уточной нити требуемой длины Г| . Недостатком известного способа вл етс то, что длина отмериваемого участка уточной нити не контролируетс , что существенно снижает качество ткани при недолетах нити и увеличивает отходы уточной нити при обрезании ее в случае перелета кром ки ткани. Целью изобретени вл етс повыш ние качества ткани за счет повышени точности отмеривани участков уточной нити. Это достигаетс тем, что по пред лагаемому способу измер ют частоту случаев,при которых длины участков проложенных уточных нитей превышают . пороговую длину, и измен ют нат жен уточной нити на выходе нитенат жител по результату сравнени частоты случаев с гэданным значением интеграла веро тности превышени пороговой длины. На чертеже представлена блок схема устройства дл подачи уточной нити. На схеме показаны уточна паковка 1, уточна нить 2, электромагнитный нитенат житель 3, отмеривающий барабан 4, форсунка 5, конфузорный канал 6, фотоэлектрический датчик 7, отсосна трубка 8, блок 9 измерени частоты случаев, блок 10 ввода интеграла веро тности, блок 11 сравнени , нитепроводники 12. Устройство работает следующим образом . Уточна нить 2 непрерывно сматываетс с неподвижной паковки 1, проходит между пластинами электромагнитного нитенат жител 3 через систему нитепроводников 12 и укладываетс в винтовую бороздку на поверхности непрерывно враЕ;аю дегос отмеривающего барабана 4. ВО врем высто берда в форсунку 5 подаетс воздух под давлением, и уточна нить с поверхности отмериваю The invention relates to the textile industry and can be used to feed the weft yarn on pneumatic weaving machines. A known method of feeding weft threads on a pneumatic weaving machine involves pulling the measured portions of the weft thread through a nitate resident and laying them. By air stream in the confusing channel, implemented in a device for continuously measuring the weft thread of the required length G | . The disadvantage of the known method is that the length of the measured portion of the weft yarn is not controlled, which significantly reduces the quality of the fabric during yarn failures and increases the waste of the weft yarn when trimming it in the event of overflight of the fabric edge. The aim of the invention is to improve the quality of the fabric by increasing the accuracy of measuring the weft yarn sections. This is achieved by using the proposed method to measure the frequency of cases in which the lengths of the sections of the laid weft threads exceed. the threshold length, and change the tension of the weft yarn at the exit of the nitenate resident according to the result of comparing the frequency of cases with the gadan value of the probability integral exceeding the threshold length. The drawing shows a block diagram of a device for feeding the weft yarn. The diagram shows the weft package 1, weft thread 2, electromagnetic nitenate resident 3, metering drum 4, nozzle 5, confusing channel 6, photoelectric sensor 7, suction tube 8, case frequency measurement unit 9, probability input unit 10, unit 11 comparison, thread conductors 12. The device operates as follows. The weft thread 2 is continuously unwound from the fixed package 1, passes between the plates of the electromagnetic nitenate resident 3 through the system of thread conductors 12 and is placed in a helical groove on the surface continuously, and the pressure drum 4 is blown into it. I measure the thread from the surface
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772492328A SU632773A1 (en) | 1977-06-03 | 1977-06-03 | Method of feeding weft thread on pneumatic loom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772492328A SU632773A1 (en) | 1977-06-03 | 1977-06-03 | Method of feeding weft thread on pneumatic loom |
Publications (1)
Publication Number | Publication Date |
---|---|
SU632773A1 true SU632773A1 (en) | 1978-11-15 |
Family
ID=20711647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772492328A SU632773A1 (en) | 1977-06-03 | 1977-06-03 | Method of feeding weft thread on pneumatic loom |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU632773A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4446893A (en) * | 1979-11-15 | 1984-05-08 | Ruti-Te Strake B.V. | Method for transporting a weft thread through the weaving shed of a weaving machine through the intermediary of a flowing fluid, and weaving machine adapted for the application of this method |
US4458726A (en) * | 1980-01-23 | 1984-07-10 | Sulzer Brothers, Ltd. | Apparatus for controlling weft picking |
US4527598A (en) * | 1982-11-08 | 1985-07-09 | Sulzer Brothers Limited | Control apparatus for a weaving machine |
US4781224A (en) * | 1984-07-20 | 1988-11-01 | Nissan Motor Co., Ltd. | Loom equipped with weft picking control system |
-
1977
- 1977-06-03 SU SU772492328A patent/SU632773A1/en active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4446893A (en) * | 1979-11-15 | 1984-05-08 | Ruti-Te Strake B.V. | Method for transporting a weft thread through the weaving shed of a weaving machine through the intermediary of a flowing fluid, and weaving machine adapted for the application of this method |
US4458726A (en) * | 1980-01-23 | 1984-07-10 | Sulzer Brothers, Ltd. | Apparatus for controlling weft picking |
US4527598A (en) * | 1982-11-08 | 1985-07-09 | Sulzer Brothers Limited | Control apparatus for a weaving machine |
US4781224A (en) * | 1984-07-20 | 1988-11-01 | Nissan Motor Co., Ltd. | Loom equipped with weft picking control system |
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