JPH04148775A - Detecting method for thread breakage - Google Patents
Detecting method for thread breakageInfo
- Publication number
- JPH04148775A JPH04148775A JP27179090A JP27179090A JPH04148775A JP H04148775 A JPH04148775 A JP H04148775A JP 27179090 A JP27179090 A JP 27179090A JP 27179090 A JP27179090 A JP 27179090A JP H04148775 A JPH04148775 A JP H04148775A
- Authority
- JP
- Japan
- Prior art keywords
- thread
- yarn
- running
- sensor
- breakage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title description 22
- 238000001514 detection method Methods 0.000 claims description 44
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 13
- 238000004804 winding Methods 0.000 description 10
- 239000007921 spray Substances 0.000 description 9
- 230000035945 sensitivity Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
Landscapes
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、繊維の紡糸巻き取り工程などにおける走行中
の糸の切断を検知する方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for detecting breakage of running yarn in a fiber spinning and winding process.
〈従来の技術〉
従来、糸切れ検知方法として、以下のような方法が知ら
れている。<Prior Art> Conventionally, the following methods are known as yarn breakage detection methods.
(イ)特開昭62−168082号公報に記載されてい
る光電センサを用いて糸切れを検知する方法で、糸の走
行ラインを挟むように光源と受光部とを配置し、受光部
で検出した光束の変化により糸切れを検知する。(b) A method of detecting thread breakage using a photoelectric sensor described in Japanese Patent Application Laid-Open No. 62-168082, in which a light source and a light receiving section are arranged to sandwich the thread running line, and the light receiving section detects the thread breakage. Thread breakage is detected by changes in the luminous flux.
(ロ)特開昭48−41068号公報に記載されている
検知装置を用いて糸切れを検知する方法で、走行してい
る糸に糸かけを接触させ、走行する糸から発生する機械
的信号を検出し、糸の走行あるいは切断を検知する。(b) A method of detecting thread breakage using a detection device described in Japanese Patent Application Laid-open No. 48-41068, in which a thread hook is brought into contact with the running thread, and a mechanical signal is generated from the running thread. to detect running or cutting of the thread.
(ハ)特開昭50−111319号公報に記載されてい
る方法で、走行する糸の周囲に生じる走行気流に対して
スプレーを噴出し、スプレー内に温度検出器を設けてお
く、走行気流が発生しているときはスプレーの噴出が妨
げられ、温度検出器はスプレー外に露出するが、走行気
流が発生していないときは、温度検出器はスプレー内に
設けられた状態になる。これらの各状態における温度差
を検知することにより、走行気流の有無、ひいては糸切
れの有無を検知する。(c) Using the method described in Japanese Patent Application Laid-open No. 50-111319, a spray is ejected against the running airflow generated around the running yarn, and a temperature sensor is provided in the spray. When a running airflow is generated, the ejection of the spray is blocked and the temperature sensor is exposed outside the spray, but when no traveling airflow is generated, the temperature sensor is installed inside the spray. By detecting the temperature difference in each of these states, it is possible to detect the presence or absence of running airflow and, by extension, the presence or absence of yarn breakage.
〈発明が解決しようとする課題〉
しかしながら、上述した従来の各糸切れ検知方法には次
のような問題点がある。<Problems to be Solved by the Invention> However, each of the conventional yarn breakage detection methods described above has the following problems.
一般に、繊維の紡糸巻き取り工程では、マルチフィラメ
ント(糸条)の帯電防止および集束性を保つため、糸条
に水、油などを塗布することが多く、糸条が走行すると
きには、その周囲に油が飛散する。したがって、(イ)
に記載したような検知方法では、飛散した潤滑油が、光
電センサ、特に受光部に付着し、検出感度の低下を招く
という問題点がある。また、糸揺れ(糸の振動)が起き
て、糸条の走行ラインが光束からズレると、充電センサ
が誤動作してしまう。Generally, in the fiber spinning and winding process, water, oil, etc. are often applied to the multifilament (yarn) in order to prevent static electricity and maintain cohesiveness. Oil splatters. Therefore, (a)
The detection method described in 1. has a problem in that the scattered lubricating oil adheres to the photoelectric sensor, especially the light receiving part, resulting in a decrease in detection sensitivity. Furthermore, if the thread sways (thread vibration) and the thread travel line deviates from the light beam, the charging sensor will malfunction.
(ロ)に記載の方法では、走行糸に糸かけを接触させて
いるので、糸条に余分な張力が加わる。In the method described in (b), since the thread hook is brought into contact with the running thread, extra tension is applied to the thread.
巻き取り工程では、所定の張力で巻き取りを行うため、
加わった余分な張力を取り除かなければならないという
不都合が生じる。また、糸条に対して直接センサを取り
付けているため、糸条に損傷を与える可能性がある。In the winding process, winding is performed with a predetermined tension.
An inconvenience arises in that the added extra tension must be removed. Furthermore, since the sensor is attached directly to the yarn, there is a possibility that the yarn may be damaged.
(ハ)に記載の方法では、糸条の走行気流にスプレーを
噴出しているが、このスプレーの噴出が糸条自体にも及
び、糸条に余分な水分が加わるという不都合がある。ま
た、走行気流の有無を検出するのに、直接検出するので
はなく、走行気流の有無によって変化するスプレーの噴
出の度合いから検出するようにしているので、応答速度
が遅くなってしまう。In the method described in (c), a spray is ejected into the airflow flowing through the yarn, but this spray also extends to the yarn itself, resulting in the inconvenience that excess moisture is added to the yarn. Furthermore, the presence or absence of a running airflow is not detected directly, but is detected from the degree of spray ejection, which changes depending on the presence or absence of a running airflow, resulting in a slow response speed.
以上の事を総合すると、糸切れ検知に要求される条件は
、
■走行する糸条に対して、非接触であること、■センサ
が糸条Tから飛散した油や水分の付着に影響されないこ
と、
■応答が迅速であること、である。Taking all of the above into account, the conditions required for thread breakage detection are: - There is no contact with the running thread, and - The sensor is not affected by oil or moisture adhering to the thread T. , ■Response is prompt.
本発明は、上記の諸条件を満足することができる糸切れ
検知方法を提供することを目的としている。An object of the present invention is to provide a yarn breakage detection method that can satisfy the above conditions.
〈課題を解決するための手段〉
本発明は、上記目的を達成するために、次のような方法
をとる。<Means for Solving the Problems> In order to achieve the above object, the present invention takes the following method.
(1)走行時の糸の周囲に発生する走行気流の有無を、
温度検出器や圧力検出器などのセンサを用いて検出し、
その検出結果に基づいて糸の走行あるいは切断を検知す
る。(1) Check the presence or absence of running airflow that occurs around the thread during running.
Detected using sensors such as temperature detectors and pressure detectors,
Based on the detection results, running or cutting of the thread is detected.
(2)上記(1)に記載の方法において、走行する糸の
周囲にII杖の糸道管を配置し、この糸道管内に前記セ
ンサを設けて、糸道管内に発生する走行気流の有無を検
出し、その検出結果に基づいて糸の走行あるいは切断を
検知する。(2) In the method described in (1) above, a yarn guide tube of the II cane is arranged around the traveling yarn, and the sensor is provided in the yarn guide tube to determine whether or not there is a traveling airflow generated in the yarn guide tube. is detected, and based on the detection result, running or cutting of the thread is detected.
(3)上記(支))に記載の方法において、前記糸道管
と連通する分岐管を糸道管の側周面部に設け、この分岐
管内に前記センサを設けて、前記走行気流に随伴して分
岐管内に発生する随伴流の有無を検出し、その検出結果
に基づいて糸の走行あるいは切断を検知する。(3) In the method described in (sub)) above, a branch pipe that communicates with the thread pipe is provided on the side circumferential surface of the thread pipe, and the sensor is provided in the branch pipe, and the sensor is provided to accompany the traveling airflow. The presence or absence of an accompanying flow generated within the branch pipe is detected, and running or cutting of the thread is detected based on the detection result.
〈作用〉
(1)に記載の検知方法によれば、走行する糸の付近に
発生する走行気流の有無を、糸の周囲雰囲気の温度変化
や圧力変化から検出し、その検出結果に基づいて、糸が
走行しているか、あるいは停止しているか(切断された
か)を検知するようにしたので、糸に全く接触せずに糸
切れを検知することが可能になる。<Operation> According to the detection method described in (1), the presence or absence of running airflow generated near the running yarn is detected from temperature changes and pressure changes in the atmosphere surrounding the yarn, and based on the detection results, Since it is configured to detect whether the thread is running or stopped (cut), it is possible to detect thread breakage without touching the thread at all.
また、(2)に記載の方法によれば、走行糸の周囲に筒
状の糸道管を配置し、糸道管内に発生する走行気流の有
無を(1)と同様にして検出するようにしたから、走行
気流が外乱による影響を受けることなく、検出感度の向
上を図ることができ、ひいては、糸切れ検知の感度向上
が図られる。Further, according to the method described in (2), a cylindrical yarn guide tube is arranged around the running yarn, and the presence or absence of running airflow generated in the yarn guide tube is detected in the same manner as in (1). Therefore, the running airflow is not affected by disturbances, and the detection sensitivity can be improved, which in turn improves the sensitivity of thread breakage detection.
さらに、(3)に記載の方法によれば、前記糸道管と連
通ずる分岐管を設け、糸道管内に発生した走行気流に伴
って、分岐管内に発生する随伴流の有無を〔〕)と同様
に検出するようにしたから、糸の帯電防止、集束性向上
のために塗布された水や油が糸の走行によって飛散して
も、センサをそれらの汚染から保護することができる。Furthermore, according to the method described in (3), a branch pipe communicating with the yarn guide pipe is provided, and the presence or absence of an accompanying flow generated in the branch pipe with the traveling airflow generated in the thread guide pipe is determined. Since the sensor is detected in the same manner as above, even if water or oil applied to the thread to prevent static electricity or improve convergence is scattered as the thread runs, the sensor can be protected from contamination.
〈実施例〉 以下、本発明の実施例を図面に基づいて説明する。<Example> Embodiments of the present invention will be described below based on the drawings.
まず、第7図を参照して、本発明の糸切れ検知方法が適
用される糸条の巻き取り工程について簡単に説明する。First, with reference to FIG. 7, a yarn winding process to which the yarn breakage detection method of the present invention is applied will be briefly described.
紡糸装置の口金1から引き出された2〜50本の単糸で
構成される糸条Tは、符号2のオイリングローラを通過
する際に、糸条の帯電防止および集束性を保持するため
の水、油などが塗布され、その後、2個のゴデーローラ
3a、3bを介して、回転駆動する巻き取りドラム4に
巻き取られる。The yarn T, which is made up of 2 to 50 single yarns pulled out from the spinneret 1 of the spinning device, is filled with water to prevent static electricity and maintain cohesiveness of the yarn when passing through an oiling roller 2. , oil, etc. are applied thereto, and then it is wound onto a rotationally driven winding drum 4 via two Godet rollers 3a and 3b.
巻き取りドラム4に巻き取られていくときの糸条の走行
速度が、大体3000〜5000m/分という高速のた
め、ゴデーローラ3bと巻き取りドラム4との間で糸切
れが発生し易い。Since the traveling speed of the yarn as it is wound around the winding drum 4 is high, approximately 3000 to 5000 m/min, yarn breakage is likely to occur between the godet roller 3b and the winding drum 4.
この糸切れを検知する本発明の方法の例を以下に挙げる
。An example of the method of the present invention for detecting this thread breakage is given below.
玉上夫隻±
第1図に示すように、糸条Tの走行によって生しる走行
気流中に、センサ5を設置し、センサ5の出力に検知回
路6を接続して、糸条Tの走行気流の有無から、糸が走
行しているかどうか、つまり、糸切れのf無を検知する
。As shown in Figure 1, a sensor 5 is installed in the running airflow generated by the running of the yarn T, and a detection circuit 6 is connected to the output of the sensor 5 to detect the movement of the yarn T. Based on the presence or absence of running airflow, it is detected whether the thread is running, that is, whether the thread is broken or not.
走行気流の有無を検知するセンサとしては、白金測温抵
抗体、赤外線センサ、熱電対やサーミスタなどの温度セ
ンサあるいは、ダイヤフラム式の圧力センサなどが用い
られる。走行気流の有無を検出するために温度センサを
用いるのは、走行気流発生時の雰囲気温度と、走行気流
がないときの雰囲気温度に差が生じるからで、一般に走
行気流発生時の雰囲気温度は、走行気流がないときの雰
囲気温度よりも低くなる。また、圧力センサを用いるの
は、走行気流の有無によって、糸条Tの周囲の圧力に差
が生じるからで、一般に走行気流が発生しているときの
糸条Tの周囲の圧力は、走行気流がないときの圧力より
も低くなる。A temperature sensor such as a platinum resistance thermometer, an infrared sensor, a thermocouple or a thermistor, or a diaphragm pressure sensor is used as a sensor for detecting the presence or absence of a traveling airflow. The reason why a temperature sensor is used to detect the presence or absence of running airflow is because there is a difference between the ambient temperature when running airflow is generated and the ambient temperature when there is no running airflow. Generally, the ambient temperature when running airflow is generated is: The ambient temperature is lower than the ambient temperature when there is no running airflow. In addition, the reason why a pressure sensor is used is because the pressure around the yarn T varies depending on the presence or absence of running airflow.Generally, the pressure around the yarn T when running airflow is generated is The pressure will be lower than that without.
このように、走行気流の有無による糸の周囲雰囲気の温
度変化や圧力変化をセンサ5が感知すると、その出力差
から糸切れの有無を検知するのが検知回路6であり、第
2図に示すような構成になっている。In this way, when the sensor 5 senses the temperature and pressure changes in the atmosphere surrounding the yarn due to the presence or absence of running airflow, the detection circuit 6 detects the presence or absence of yarn breakage from the output difference, as shown in FIG. It is structured like this.
センサ5が温度センサの場合、ブリッジ回路6aの隣合
う2辺には、温度補償用センサ7とセンサ5が接続され
、他の隣合う2辺の抵抗RとR′(R,+VR)との接
続点aは所定のts+vに、温度補償用センサ7とセン
サ5との接続点すはアースに接続される。そして、抵抗
R,R’と温度補傷用センサ7とセンサ5との各接続点
c、dは増幅回路6b内の差動増幅器8.8に接続され
る。When the sensor 5 is a temperature sensor, the temperature compensation sensor 7 and the sensor 5 are connected to two adjacent sides of the bridge circuit 6a, and the resistances R and R' (R, +VR) on the other two adjacent sides are connected. The connection point a is connected to a predetermined ts+v, and the connection point between the temperature compensation sensor 7 and the sensor 5 is connected to ground. Connection points c and d between the resistors R and R' and the temperature repair sensor 7 and sensor 5 are connected to a differential amplifier 8.8 in the amplifier circuit 6b.
ブリッジ回路6aは、抵抗RとR′および、温度補傷用
センサ7の抵抗が、センサ5がある温度、すなわち、あ
る抵抗値を有するときに平衡になるように調整されてい
る。The bridge circuit 6a is adjusted so that the resistances R and R' and the resistance of the temperature repair sensor 7 are balanced when the sensor 5 has a certain temperature, that is, a certain resistance value.
したがって、差動増幅器8.8の出力電圧の差(■。、
−V。、)は、接続点c、dとの電位差、っまり、セン
サ5の抵抗値変化に応じて変化し、端子9からは糸切れ
の検知信号(走行気流の有無を表す信号)が出力される
。Therefore, the difference in the output voltage of the differential amplifier 8.8 (■.,
-V. , ) changes according to the potential difference with the connection points c and d, the tightness, and the resistance value change of the sensor 5, and a thread breakage detection signal (a signal indicating the presence or absence of running airflow) is output from the terminal 9. .
また、センサが圧力センサの場合は、センサ5を例えば
筒体の開口部が、歪ゲージと一体になったダイヤフラム
で覆われる如く固定されたもので構成することにより、
走行気流の圧力変化を歪ゲージの抵抗変化として検出す
ることができ、基本的には上記第2図と同様の検知回路
6を用いることができる。In addition, if the sensor is a pressure sensor, the sensor 5 may be configured such that the opening of the cylindrical body is fixed so as to be covered with a diaphragm integrated with a strain gauge.
The pressure change of the traveling airflow can be detected as a resistance change of the strain gauge, and basically the same detection circuit 6 as shown in FIG. 2 above can be used.
このように、走行気流の有無を温度、あるいは圧力変化
から検出し、糸切れを間接的に検知するので、糸条Tに
なんら影響を与えることなく、糸切れが検知される。In this way, the presence or absence of running airflow is detected from temperature or pressure changes, and yarn breakage is indirectly detected, so yarn breakage is detected without affecting the yarn T in any way.
II工旌■
第3図に示すように、糸条Tの周囲に糸道管10を配置
し、糸道管10の内部に上述のセンサ5を設けることに
よって、糸道管10内に発生した糸条Tの走行気流の有
無を検出し、糸切れを検知する。II Engineering ■ As shown in FIG. The presence or absence of airflow running through the yarn T is detected to detect yarn breakage.
糸道管10は、糸条Tを管内に導き入れるための導糸ス
リット11をその長手方向に沿って形成した円筒状のも
ので、内周壁部にセンサ5を取り付けたものである。The yarn guide tube 10 has a cylindrical shape in which a yarn guide slit 11 for guiding the yarn T into the tube is formed along its longitudinal direction, and a sensor 5 is attached to the inner circumferential wall.
このように、センサ5を糸道管10内に設置して、糸条
Tの走行気流を検出することで、外乱の影響を受けるこ
となく、検出感度を向上させることができる。なお、セ
ンサ5に接続される検知回路6は第1実施例のものと同
様であり、これは以下に記載する各実施例でも同様であ
る。In this way, by installing the sensor 5 in the yarn guide tube 10 and detecting the traveling airflow of the yarn T, detection sensitivity can be improved without being affected by external disturbances. Note that the detection circuit 6 connected to the sensor 5 is the same as that in the first embodiment, and this is also the same in each embodiment described below.
また、この第2実施例は次のように、変形実施すること
ができる。Moreover, this second embodiment can be modified as follows.
■第4図(6)に示すように、センサ5を糸道管10の
内周面に対して樹脂モールド12で固定する。このよう
にすれば、糸条Tの走行によって飛散した油が、センサ
5に付着するのを防ぐことができる。(2) As shown in FIG. 4 (6), the sensor 5 is fixed to the inner peripheral surface of the yarn duct 10 with a resin mold 12. In this way, oil scattered by the running of the yarn T can be prevented from adhering to the sensor 5.
モールド樹脂12としては、センサ5の検出感度を低下
させないために、熱伝導性の優れたものを使用するのが
望ましい。As the molding resin 12, it is desirable to use one with excellent thermal conductivity so as not to reduce the detection sensitivity of the sensor 5.
■または、同図(ハ)に示すように、糸道管10の一部
を径方向に突出させ、その突出部13内にセンサ5を埋
設する。(2) Alternatively, as shown in FIG. 3(C), a part of the yarn guide tube 10 is made to protrude in the radial direction, and the sensor 5 is buried within the protrusion 13.
1主裏旌班
第5図(a)の斜視図および同図(ロ)の縦断面図に示
すように、上述の糸道管10の側面部にもう一つの分岐
管14を連通接続してT字管15を形成し、分岐管14
内にセンサ5を設けることによって、糸条Tの走行によ
り発生した分岐管14内の随伴流Aの有無を検出する。As shown in the perspective view of FIG. 5(a) and the vertical cross-sectional view of FIG. A T-shaped pipe 15 is formed, and a branch pipe 14 is formed.
By providing a sensor 5 inside, the presence or absence of an accompanying flow A inside the branch pipe 14 generated by the running of the yarn T is detected.
つまり、導糸スリン)11から糸道管10内に糸条Tを
挿通して、糸条Tの巻き取りを開始すると、糸条Tが走
行し、糸道管10内には前述の走行気流が発生する。こ
の走行気流に随伴して、分岐管14内には糸道管10へ
と向かう随伴流Aが発生する。In other words, when the yarn T is inserted into the yarn guide tube 10 from the yarn guide sulin 11 and winding of the yarn T is started, the yarn T runs and the above-mentioned running air flows inside the yarn guide tube 10. occurs. Accompanied by this traveling airflow, an accompanying flow A toward the yarn guide tube 10 is generated within the branch pipe 14.
したがって、随伴流Aが発生したときの分岐管14内の
雰囲気温度(または圧力)と、随伴流Aが発生していな
いときの雰囲気温度(または圧力)との間には差が生じ
るので、この差をセンサ5で検出すれば、随伴流Aの発
生の有無、ひいては、糸条Tの走行気流の有無が検出さ
れる。Therefore, there is a difference between the atmospheric temperature (or pressure) inside the branch pipe 14 when the accompanying flow A is generated and the atmospheric temperature (or pressure) when the accompanying flow A is not generated. If the difference is detected by the sensor 5, the presence or absence of the accompanying flow A and, in turn, the presence or absence of the running airflow of the yarn T can be detected.
このように、分岐管14を新たに設置して、その中にセ
ンサ5を設置するのは、第2実施例の変形例のように、
センサ5を樹脂モールドしたり、埋設することなく、セ
ンサ5への油の付着を防止するためである。In this way, newly installing the branch pipe 14 and installing the sensor 5 therein, as in the modification of the second embodiment,
This is to prevent oil from adhering to the sensor 5 without molding the sensor 5 with resin or burying it.
さらに、センサ5への油の付着を防止する方法として、
分岐管14の開口部14aをフィルタ16によって塞ぐ
ようにしてもよい、糸条Tの高速走行によってT字管1
5の外周空間にまで油が飛散した場合、分岐管14の開
口部14aから吸入される空気中に油の粒子が含まれて
いる可能性があるため、フィルタ16を設けることによ
ってその油の粒子が、センサ5に付着するのを防ぐ。Furthermore, as a method of preventing oil from adhering to the sensor 5,
The opening 14a of the branch pipe 14 may be blocked by a filter 16.
If oil is scattered to the outer peripheral space of the branch pipe 14, there is a possibility that oil particles may be included in the air sucked through the opening 14a of the branch pipe 14. This prevents the particles from adhering to the sensor 5.
以下、参考までに、T字管15の寸法例を紹介しておく
。Below, an example of the dimensions of the T-shaped tube 15 will be introduced for reference.
糸道管1Gの内径φDは、約0.1〜100m5で好ま
しくは、4〜20■■の範囲、分岐管14の内径φdは
、約0.1〜100− で好ましくは、0.5〜lo
w閣の範囲、糸道管lOの管長さllは、約5〜101
00Oで好ましくは、10〜200■■の範囲、分岐管
14の管長さitは、約2〜10100Oで好ましくは
、lO〜200謡■の範囲である。The inner diameter φD of the thread guide tube 1G is about 0.1 to 100 m5, preferably in the range of 4 to 20 mm, and the inner diameter φd of the branch pipe 14 is about 0.1 to 100 m5, preferably 0.5 to 20 mm. lo
The range of w, the pipe length of thread pipe lO is about 5 to 101
The pipe length it of the branch pipe 14 is about 2 to 10,100 O, preferably in the range of 10 to 200 O.
1土亥蓋班
第6図に示すように、第3実施例に記載したT字管15
の分岐管14の側周部分から、さらに分岐する連通管1
7を連通接続し、この連通管17内にセンサ5を設置し
て、連通管17内に発生した随伴流を検出する。そして
、分岐管14の開口部14aに洗浄ブラシ18を備える
。1. As shown in FIG. 6, the T-shaped pipe 15 described in the third embodiment
The communication pipe 1 further branches from the side circumferential portion of the branch pipe 14.
7 are connected for communication, and a sensor 5 is installed in this communication pipe 17 to detect the accompanying flow generated in the communication pipe 17. A cleaning brush 18 is provided at the opening 14a of the branch pipe 14.
このように、センサ5を分岐管14から退避させて、洗
浄ブラシ18を備え、分岐管14の内周面に付着した油
を清掃することにより、分岐管14および連通管17内
に発生する随伴流の流れ効率を向上させることができ、
センサ5の感度向上が図れる。In this way, by retracting the sensor 5 from the branch pipe 14 and cleaning the oil adhering to the inner peripheral surface of the branch pipe 14 with the cleaning brush 18, the accompanying oil generated in the branch pipe 14 and the communication pipe 17 can be removed. can improve the flow efficiency of the flow,
The sensitivity of the sensor 5 can be improved.
次に、上述の第3実施例に記載の方法を用いた糸切れ検
知の実験例を記載する。Next, an experimental example of thread breakage detection using the method described in the third embodiment described above will be described.
!腋班
(1)糸条Tとして、フィラメント数が36、デニール
が75で、捲縮加工が施されたものを用い、そして、糸
道管10として、内径φDを8−1筒長さitを50m
m、分岐管14の内径φdを4■醜、管長さ18を5抛
閤として構成したものに、前記糸条Tを、1000謹/
分の速度で走行させたときの糸切れ前後の検知回路6の
出力電圧(■。+ Voz)の変化をペンレコーダで
記録した。その結果が、第8図(a)に示しているグラ
フである。! Armpit section (1) As the yarn T, use one with a filament count of 36, a denier of 75, and a crimped one, and as the yarn guide tube 10, an inner diameter φD of 8-1 and a cylinder length it. 50m
m, the inner diameter φd of the branch pipe 14 is 4 cm, and the pipe length 18 is 5 cm, and the thread T is 1000 m/m.
Changes in the output voltage (■.+Voz) of the detection circuit 6 before and after yarn breakage were recorded with a pen recorder when the yarn was run at a speed of 50 minutes. The result is the graph shown in FIG. 8(a).
このグラフから明らかなように、糸切れが発生した時刻
L′の前後の出力電圧の差は非常に顕著に表れている。As is clear from this graph, the difference in the output voltages before and after time L' when the yarn breakage occurs is very noticeable.
時刻「0〜t I J間の電圧値は糸条Tが走行中に出
力された債で、時刻rt’〜Lm−xJ間の電圧値は糸
切れ後に出力された値である。したがって、これらの電
圧値の変化から、糸条Tの糸切れが検知される。The voltage value between time 0 and t I J is the voltage output while the yarn T is running, and the voltage value between time rt' and Lm-xJ is the value output after the yarn breaks. Breakage of the yarn T is detected from a change in the voltage value.
(2)次に、上記の糸条Tを捲縮加工を施さない状態(
生糸の状態)で、糸切れ検知の実験を行った結果を同図
(b)に示す。なお、糸条Tの走行速度は実験例(1)
と同様である。(2) Next, the above yarn T is not crimped (
Figure (b) shows the results of an experiment to detect thread breakage in the raw silk state. Note that the running speed of the yarn T is as in Experimental Example (1).
It is similar to
このグラフから明らかなように、生糸の状態でも、糸切
れ前後の出力電圧差は顕著に表れる結果となった。As is clear from this graph, even in the state of raw silk, the difference in output voltage before and after yarn breakage was significant.
(3)さらに、糸条Tとして、フィラメント数が3、デ
ニールが12で、生糸の状態のものを用い、上記各実験
例と同様の走行速度で実験を行った結果のグラフを同図
(C)に示す。(3) Furthermore, the same figure (C ).
このグラフを見ると、糸切れ前後の出力電圧値の差が顕
著に表れているとは言えないが、糸切れの検知は可能で
あった。Looking at this graph, it cannot be said that the difference in the output voltage values before and after the thread breakage was clearly visible, but it was possible to detect the thread breakage.
〈発明の効果〉
以上の説明から明らかなように、本発明の糸切れ検知方
法によると、次のような効果がある。<Effects of the Invention> As is clear from the above description, the yarn breakage detection method of the present invention has the following effects.
(1)走行時に糸の周囲に発生する走行気流の有無を、
周囲雰囲気の温度変化や圧力変化から検出するようにし
たから、糸に対して非接触状態で、しかも、従来例のス
プレー噴出方式のように糸に悪影響を与えることなく、
糸切れ検知が可能になった。(1) Check the presence or absence of running airflow that occurs around the thread during running.
Since the detection is based on temperature and pressure changes in the surrounding atmosphere, it is possible to do so without contacting the yarn, and without having any negative impact on the yarn as with conventional spray methods.
Thread breakage detection is now possible.
(2)走行糸の周囲に糸道管を配置し、この糸道管内に
発生する走行気流の有無を検出するようにしたから、外
乱の影響を防いだ状態での走行気流の有無の検出が可能
になり、糸切れの検知感度の向上を回ることができる。(2) Since the yarn guide tube is placed around the running yarn and the presence or absence of running airflow generated within the yarn guide tube is detected, the presence or absence of running airflow can be detected while preventing the influence of disturbances. This makes it possible to improve thread breakage detection sensitivity.
(3)前記糸道管と連通ずる分岐管を設置し、糸道管内
に発生した走行気流に伴う分岐管内の随伴流の有無を検
出することで、糸切れを検知するようにしたから、走行
系が飛散する水や油などの汚染からセンサを保護するこ
とができ、糸切れ検知感度の向上を図ることができる。(3) A branch pipe that communicates with the yarn guide pipe is installed, and thread breakage is detected by detecting the presence or absence of an accompanying flow in the branch pipe accompanying the running airflow generated in the thread guide pipe. The sensor can be protected from contamination such as water or oil that is scattered by the system, and thread breakage detection sensitivity can be improved.
第1図ないし第8図は本発明の一実施例に係り、第1図
は第1実施例の糸切れ検知方法を示した斜視図、第2図
は検知回路の構成を示した図、第3図は第2実施例の糸
切れ検知方法を示した斜視図、第4図はその変形例を示
した断面図、第5図(a)は第3実施例の糸切れ検知方
法を示した斜視図、同図[有])はその断面図、第6図
は第4実施例の糸切れ検知方法を示した斜視図、第7図
は糸の巻き取り工程を説明する簡略図、第8図は糸切れ
検知の実験結果を示したグラフである。
5・・・センサ 6・・・検知回路10・・・
糸道管 14・・・分岐管T・・・糸条
第1図
■
第2図1 to 8 relate to one embodiment of the present invention, in which FIG. 1 is a perspective view showing the yarn breakage detection method of the first embodiment, FIG. 2 is a diagram showing the configuration of a detection circuit, and FIG. Fig. 3 is a perspective view showing the thread breakage detection method of the second embodiment, Fig. 4 is a sectional view showing a modification thereof, and Fig. 5(a) shows the thread breakage detection method of the third embodiment. FIG. 6 is a perspective view showing the thread breakage detection method of the fourth embodiment, FIG. 7 is a simplified diagram illustrating the thread winding process, and FIG. The figure is a graph showing experimental results for thread breakage detection. 5...Sensor 6...Detection circuit 10...
Yarn guide tube 14... Branch tube T... Yarn thread Figure 1■ Figure 2
Claims (3)
温度検出器や圧力検出器などのセンサを用いて検出し、
その検出結果に基づいて糸の走行あるいは切断を検知す
ることを特徴とする糸切れ検知方法。(1) Check the presence or absence of running airflow that occurs around the thread during running.
Detected using sensors such as temperature detectors and pressure detectors,
A yarn breakage detection method characterized by detecting yarn running or breakage based on the detection result.
走行する糸の周囲に筒状の糸道管を配置し、この糸道管
内に前記センサを設けて、糸道管内に発生する走行気流
の有無を検出し、その検出結果に基づいて糸の走行ある
いは切断を検知する糸切れ検知方法。(2) In the thread breakage detection method according to claim (1),
A cylindrical yarn guide tube is arranged around the traveling yarn, and the sensor is provided inside the yarn guide tube to detect the presence or absence of traveling airflow generated in the yarn guide tube, and based on the detection result, the yarn travel is controlled. Or a thread breakage detection method that detects breakage.
前記糸道管と連通する分岐管を糸道管の側周面部に設け
、この分岐管内に前記センサを設けて、前記走行気流に
随伴して分岐管内に発生する随伴流の有無を検出し、そ
の検出結果に基づいて糸の走行あるいは切断を検知する
糸切れ検知方法。(3) In the thread breakage detection method according to claim (2),
A branch pipe communicating with the yarn guide tube is provided on a side peripheral surface of the yarn guide tube, and the sensor is provided in the branch tube to detect the presence or absence of an accompanying flow generated in the branch pipe accompanying the traveling airflow, A thread breakage detection method that detects thread running or breakage based on the detection results.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27179090A JP2936690B2 (en) | 1990-10-09 | 1990-10-09 | Thread break detection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27179090A JP2936690B2 (en) | 1990-10-09 | 1990-10-09 | Thread break detection method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04148775A true JPH04148775A (en) | 1992-05-21 |
JP2936690B2 JP2936690B2 (en) | 1999-08-23 |
Family
ID=17504889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27179090A Expired - Fee Related JP2936690B2 (en) | 1990-10-09 | 1990-10-09 | Thread break detection method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2936690B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107082320A (en) * | 2016-02-12 | 2017-08-22 | 村田机械株式会社 | Yarn monitoring device |
CN107082315A (en) * | 2016-02-12 | 2017-08-22 | 村田机械株式会社 | Yarn monitoring device |
CN108998914A (en) * | 2018-10-18 | 2018-12-14 | 广东溢达纺织有限公司 | Yarn break checkout gear and sizing machine system |
-
1990
- 1990-10-09 JP JP27179090A patent/JP2936690B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107082320A (en) * | 2016-02-12 | 2017-08-22 | 村田机械株式会社 | Yarn monitoring device |
CN107082315A (en) * | 2016-02-12 | 2017-08-22 | 村田机械株式会社 | Yarn monitoring device |
CN108998914A (en) * | 2018-10-18 | 2018-12-14 | 广东溢达纺织有限公司 | Yarn break checkout gear and sizing machine system |
CN108998914B (en) * | 2018-10-18 | 2024-01-30 | 广东溢达纺织有限公司 | Broken yarn detection device and sizing machine system |
Also Published As
Publication number | Publication date |
---|---|
JP2936690B2 (en) | 1999-08-23 |
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