JPH07134106A - Thread damaged part detecting apparatus - Google Patents

Thread damaged part detecting apparatus

Info

Publication number
JPH07134106A
JPH07134106A JP28090593A JP28090593A JPH07134106A JP H07134106 A JPH07134106 A JP H07134106A JP 28090593 A JP28090593 A JP 28090593A JP 28090593 A JP28090593 A JP 28090593A JP H07134106 A JPH07134106 A JP H07134106A
Authority
JP
Japan
Prior art keywords
yarn
sheet
signal
circuit
light receiving
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
Application number
JP28090593A
Other languages
Japanese (ja)
Other versions
JPH0820378B2 (en
Inventor
Mitsuhiro Doi
光弘 土居
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAI DENKI KK
Original Assignee
PAI DENKI KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PAI DENKI KK filed Critical PAI DENKI KK
Priority to JP28090593A priority Critical patent/JPH0820378B2/en
Publication of JPH07134106A publication Critical patent/JPH07134106A/en
Publication of JPH0820378B2 publication Critical patent/JPH0820378B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Warping, Beaming, Or Leasing (AREA)

Abstract

PURPOSE:To provide a thread damaged part detecting apparatus by which damaged parts of a large number of threads running like a sheet due to break of threads, fuzz, etc., are precisely detected, wherein the threads run in parallel like a sheet. CONSTITUTION:Light fluxes projected out of a projecting part 2 cross the lower face of threads which are arranged like a sheet and run and due to the damage parts of the threads there occurs some changed upon the light fluxes and a light receiving part 3 receives the change. Signals based on the brightness decrease of the light fluxes to be received by the light receiving part 3 and the duration of the brightness decrease are sent to an amplifying circuit 6 by a detection circuit 5 and the signals with at least threshold level set by a threshold level setting circuit 7 are measured by a respective signal time duration measuring circuit 8. A thread break signal distinguishing circuit 9 compares the measured time duration with the length of the time duration of the signals attributed to the heat waves and in the case the measured time duration is shorter, the circuit 9 sends out signals to a stopping control circuit 11 to stop the running of the sheet-like threads.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、糸損傷部検出装置に関
し、特に、シート状に並んで走行している多数の糸にお
けるたとえば毛羽または糸切れのような損傷部を検出す
ることができるような糸損傷部検出装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn damage portion detecting device, and more particularly, to a yarn damage portion such as fluff or yarn breakage in a large number of yarns running side by side in a sheet form. The present invention relates to a yarn damage portion detection device.

【0002】[0002]

【従来の技術】図4は、多数本の糸が同一平面上でシー
ト状に並んで走行しているシート状走行糸と従来の糸損
傷部検出装置との関係を示した概略ブロック図であり、
図5は、図4に示した糸損傷部検出装置として用いた糸
切れ検出装置の概略ブロック図である。
2. Description of the Related Art FIG. 4 is a schematic block diagram showing the relationship between a sheet-shaped running yarn in which a large number of yarns run side by side in the form of a sheet and a conventional yarn-damaged portion detecting device. ,
FIG. 5 is a schematic block diagram of a yarn breakage detection device used as the yarn damage portion detection device shown in FIG.

【0003】図4を参照して、多数本の糸が同一平面上
でシート状に並んで走行しているシート状走行糸は、図
示しない糊付け機で糊付けされ、乾燥炉51に運ばれ
る。乾燥炉51の熱がシート状走行糸50に付着された
糊を乾燥するので、シート状走行糸50は熱を帯びてい
る。そのため、その熱を冷却するためにシート状走行糸
50は冷却部52に運ばれる。そして、冷却されたシー
ト状走行糸50は、最終的に製品としてたとえば巻取り
ロールなどに巻取られる。巻取りロールなどに巻取られ
るシート状走行糸50は、すべて始めから製品として良
好なものばかりでなく、運ばれる途中でたとえば糸切れ
および毛羽のような損傷部を有する場合がある。したが
って、それらの損傷部を検出する必要があり、その損傷
部を検出する装置として糸切れ検出装置や毛羽検出装置
がある。
With reference to FIG. 4, a sheet-shaped running yarn in which a large number of yarns run side by side in a sheet shape on the same plane is glued by a gluing machine (not shown) and conveyed to a drying oven 51. Since the heat of the drying oven 51 dries the glue attached to the sheet-shaped running yarn 50, the sheet-shaped running yarn 50 is heated. Therefore, the sheet-shaped running yarn 50 is carried to the cooling unit 52 in order to cool the heat. Then, the cooled sheet-shaped running yarn 50 is finally wound as a product on, for example, a winding roll. The sheet-like running yarns 50 wound on the take-up roll and the like are not only good products from the beginning, but may have damaged parts such as yarn breakages and fluffs during transportation. Therefore, it is necessary to detect those damaged parts, and there are a yarn breakage detecting device and a fluff detecting device as devices for detecting the damaged parts.

【0004】糸切れ検出装置53は、糸切れを可能な限
り早く検出するため、かつ冷却部52を過ぎた後は糸切
れが起こりにくいなどの理由により、乾燥炉51と冷却
部52との間に設けられる。これに対して、毛羽検出装
置57は、シート状走行糸50の材質によっては、取付
ける必要のないこともあるが、最終的チェックを行なう
ために冷却部52を過ぎた位置に一般には設けられる。
糸切れ検出装置53は、シート状走行糸50の一側方に
設けられる投光手段の一例の投光部54と、投光部54
からの光束を受光するためにシート状走行糸50の他側
方に設けられる受光手段の一例の受光部55と、受光部
55で検出された光束の光度低下に基づいて糸切れが生
じているかどうかを判別する本体56とを備えている。
これと同様に、毛羽検出装置57も、投光部58と、受
光部59と、本体60とを備えている。
The yarn breakage detection device 53 detects the yarn breakage as soon as possible, and because the yarn breakage is unlikely to occur after passing the cooling section 52, the yarn breakage detection apparatus 53 is provided between the drying furnace 51 and the cooling section 52. It is provided in. On the other hand, the fluff detection device 57 may not be required to be attached depending on the material of the sheet-shaped traveling yarn 50, but is generally provided at a position beyond the cooling unit 52 for the final check.
The yarn breakage detection device 53 includes a light projecting unit 54, which is an example of a light projecting unit provided on one side of the sheet-shaped traveling yarn 50, and a light projecting unit 54.
A light receiving portion 55, which is an example of a light receiving means provided on the other side of the sheet-shaped traveling yarn 50 to receive the light flux from the sheet, and whether the yarn breakage occurs due to the decrease in the luminous intensity of the light flux detected by the light receiving portion 55. And a main body 56 for discriminating whether or not it is provided.
Similarly, the fluff detecting device 57 also includes a light projecting unit 58, a light receiving unit 59, and a main body 60.

【0005】構成上はともにほぼ同一であるため、特
に、糸切れ検出装置53について図5を参照して、説明
する。糸切れ検出装置53の本体56は、受光部55か
らの出力を変換し、横軸に時間を縦軸に光電出力を取る
ことで糸切れによる光束の光度低下を表現できる信号を
出力する検波回路61と、糸切れを起こしたことを表現
する検波回路61の出力に応じて、シート状走行糸50
の走行を停止させるための停止制御回路62と、必ずし
も設けられる必要はないが、ビーム1巻あたり何回の糸
切れが生じたかをカウントするためのカウンタ63とを
含む。
Since the structures are almost the same, the yarn breakage detecting device 53 will be described in particular with reference to FIG. The main body 56 of the yarn breakage detection device 53 converts the output from the light receiving unit 55 and outputs a signal capable of expressing a decrease in luminous intensity of the light flux due to yarn breakage by taking time on the horizontal axis and photoelectric output on the vertical axis. 61 and the output of the detection circuit 61 expressing that a yarn breakage has occurred, the sheet-shaped running yarn 50
A stop control circuit 62 for stopping the traveling of No. 2 and a counter 63 for counting the number of yarn breakages per one turn of the beam, though not necessarily provided.

【0006】次に、図4および図5を参照して、動作に
ついて説明する。投光部54から投光された光束はシー
ト状走行糸50の下面より10〜30mmの位置をほぼ
円形の光束を受光部55へ向けて投光する。シート状走
行糸50のうち、糸切れを起こした糸は下方に垂れ下が
っているので、その場合には、その糸切れによって受光
部55は受光の光度低下および光度低下持続時間を検出
できる。その光束の光度低下および光度低下持続時間を
検波回路61は、光度低下が大きくなるにつれて光電出
力を大きくするような信号を出力できる。この出力は糸
切れを表しているため、停止制御回路62およびカウン
タ63はこれらが入力されることにより、糸切れが生じ
たかどうかを判断でき、停止制御回路60においてはシ
ート状走行糸50の走行を停止させ、カウンタ63にお
いては、糸切れが起こった回数をカウントする。
Next, the operation will be described with reference to FIGS. 4 and 5. The light flux projected from the light projecting portion 54 projects a substantially circular light flux at a position of 10 to 30 mm from the lower surface of the sheet-shaped running yarn 50 toward the light receiving portion 55. Among the sheet-shaped running yarns 50, the yarns that have undergone yarn breakage hang down, and in that case, the light receiver 55 can detect the decrease in light intensity and the duration of decrease in light intensity due to the yarn breakage. The detection circuit 61 for detecting the decrease in luminous intensity and the duration of decrease in luminous intensity of the luminous flux can output a signal that increases the photoelectric output as the decrease in luminous intensity increases. Since this output indicates yarn breakage, the stop control circuit 62 and the counter 63 can determine whether or not yarn breakage has occurred by inputting these, and the stop control circuit 60 causes the sheet-shaped traveling yarn 50 to travel. Is stopped, and the counter 63 counts the number of times of thread breakage.

【0007】[0007]

【発明が解決しようとする課題】ところで、近年シート
状走行糸の走行速度は高速となり、糸切れ箇所および毛
羽箇所の通過速度が速くなったことに伴って、非常に高
感度の検出装置が必要となってきている。また、走行速
度のみでなく、マルチフィラメントの単糸切れによる毛
羽に対して、2デニール3mm長の検出が必要とされ、
これに対しても非常に高感度の検出装置が必要とされて
いる。そのため、検出感度を上げたために、高速を乱す
風綿や糊かすや張力の低くなった垂れ糸に起因する誤検
出が図4および図5に示した従来の糸損傷部検出装置に
は生じていた。また、乾燥炉近辺には乾燥炉から放射さ
れる熱の影響により、ゆらゆらと発生している熱気流す
なわちかげろうによる光束の乱れが生じ、この意味でも
誤検出が多かった。誤検出の原因は検出感度を上げたた
めなので、それを防ぐために感度を下げると、逆に検出
率が50%以下に低下してしまうので感度を低下させる
こともできない状態であった。
By the way, in recent years, the traveling speed of the sheet-shaped running yarn has become high, and the passing speed of the yarn breakage point and the fluff point has become fast, so that a very highly sensitive detection device is required. Is becoming. In addition to running speed, it is necessary to detect 2 denier and 3 mm length for fluff caused by single filament breakage of multifilament,
Against this, a highly sensitive detection device is required. Therefore, due to the increase in the detection sensitivity, erroneous detections due to flies that disturb the high speed, shavings, and sagging yarns with low tension have occurred in the conventional yarn damage portion detecting device shown in FIGS. 4 and 5. It was In addition, due to the effect of heat radiated from the drying furnace, the fluctuating heat flow, that is, the turbulence of the luminous flux due to the swelling, occurs, and erroneous detection was also frequent in this sense. Since the cause of the erroneous detection is to increase the detection sensitivity, if the sensitivity is lowered in order to prevent it, the detection rate will be lowered to 50% or less, so that the sensitivity cannot be lowered.

【0008】つまり、誤検出の防止の要請と損傷部の検
出漏れ防止の要請とが二律背反しており、従来において
この二律背反する両要請を共に満足するものはなかっ
た。
That is, there is a trade-off between the request for prevention of erroneous detection and the request for prevention of omission of detection of a damaged portion, and there has been no satisfying both these trade-off requests in the past.

【0009】この二律背反する両要請を共に満足するに
は、受光手段からの検出出力が導出された場合にその検
出出力を手掛かりに実際の損傷部が検出されたのかまた
はかげろう等の損傷部以外のものが検出されたのかを判
別する機能が不可欠となる。そこで、受光手段からの検
出信号を分析した結果、損傷部の検出時とそれ以外の検
出時とで受光手段の検出信号の出力長さ状態が異なるこ
とを新たに発見した。
In order to satisfy both of these contradictory requirements, when the detection output from the light receiving means is derived, the detection output is used as a clue to detect the actual damaged portion or to detect other than the damaged portion such as caulking. The ability to determine if something was detected is essential. Then, as a result of analyzing the detection signal from the light receiving means, it was newly found that the output length state of the detection signal of the light receiving means is different at the time of detecting the damaged portion and at the time of other detection.

【0010】本発明は、この新たな発見に基づいて考え
出された全く新規な発明であり、その目的は、上記のよ
うな問題を解決し、たとえばかげろうによる誤検出また
は糊かすなどの異物による誤検出を極力抑え、検出精度
を良好にすることができるような糸損傷部検出装置を提
供することである。
The present invention is a completely new invention conceived based on this new discovery, and its object is to solve the above problems and to prevent an erroneous detection due to, for example, shaving, or a foreign substance such as glue. It is an object of the present invention to provide a yarn damage portion detection device capable of suppressing erroneous detection as much as possible and improving detection accuracy.

【0011】[0011]

【課題を解決するための手段】請求項1の発明に係る糸
損傷部検出装置は、多本数の糸が同一平面上でシート状
に並んで走行しているシート状走行糸の一側方に投光手
段を設け、投光手段から投光されてシート状走行糸を横
切ってきた光束を受光可能な位置に受光手段を設け、そ
の間に投射されている光束がシート状走行糸の平面上か
らはみ出した損傷部によって妨げられたときに、受光手
段から出力する信号に基づいて損傷部を検出する糸損傷
部検出装置であって、受光手段から出力される信号の出
力長さ状態を予め定められた基準長さと比較し、受光手
段から出力される信号が損傷部を検出した場合の信号で
あるか否かを判別する判別手段を含んでいる。
According to another aspect of the present invention, there is provided a yarn damage portion detecting device, wherein a plurality of yarns are arranged in a sheet shape on the same plane and are arranged in one side of a sheet-like traveling yarn. A light projecting means is provided, and a light receiving means is provided at a position capable of receiving a light flux projected from the light projecting means and traversing the sheet-shaped running yarn. A yarn damage portion detection device for detecting a damaged portion based on a signal output from a light receiving means when being blocked by a protruding damage portion, wherein an output length state of a signal output from the light receiving means is predetermined. It includes a discriminating means for discriminating whether or not the signal output from the light receiving means is a signal when a damaged portion is detected by comparing with the reference length.

【0012】請求項2の発明に係る糸損傷部検出装置
は、請求項1の予め定められた基準長さは、5から20
msecであり、判別手段は、受光手段から出力される
信号の長さ状態が基準長さ以内の場合に、損傷部を検出
した場合の信号である旨の判別信号を出力し、該判別信
号に基づいて、シート状走行糸を停止制御する停止制御
手段をさらに含んでいる。
In the yarn damage portion detecting device according to the invention of claim 2, the predetermined reference length of claim 1 is 5 to 20.
msec, and when the length state of the signal output from the light receiving means is within the reference length, the discrimination means outputs a discrimination signal indicating that the signal is a signal when a damaged portion is detected, and the discrimination signal is output. On the basis of the above, stop control means for controlling stop of the sheet-shaped traveling yarn is further included.

【0013】[0013]

【作用】請求項1の発明に係る糸損傷部検出装置は、受
光手段から出力される信号の出力長さ状態を予め定めた
基準長さと比較するので、受光手段から出力される信号
がたとえば糸切れや毛羽のような損傷部を検出した場合
の信号であるか否かを判別できる。
In the yarn damage portion detecting device according to the present invention, since the output length state of the signal output from the light receiving means is compared with a predetermined reference length, the signal output from the light receiving means is, for example, a yarn. It is possible to determine whether or not the signal is a signal when a damaged portion such as a break or fluff is detected.

【0014】請求項2の発明に係る糸損傷部検出装置
は、予め定められた基準長さを5から20msecと
し、受光手段から出力される信号がたとえば糸切れや毛
羽のような損傷部を検出した場合の信号のときには、シ
ート状走行糸を停止制御できる。
In the yarn damage portion detecting device according to the invention of claim 2, the predetermined reference length is set to 5 to 20 msec, and the signal output from the light receiving means detects a damaged portion such as yarn breakage or fluff. When the signal is given, the sheet-shaped running yarn can be stopped and controlled.

【0015】[0015]

【実施例】図1は、この発明の一実施例による糸損傷部
検出装置として用いた糸切れ検出装置を示した概略ブロ
ック図である。毛羽検出装置についても図1に示した糸
切れ検出装置とほぼ同じであるため、以下、説明を簡単
にするために糸切れ検出装置について説明する。
1 is a schematic block diagram showing a yarn breakage detecting device used as a yarn damage portion detecting device according to an embodiment of the present invention. Since the fluff detection device is almost the same as the yarn breakage detection device shown in FIG. 1, the yarn breakage detection device will be described below to simplify the description.

【0016】図1を参照して、この実施例による糸切れ
検出装置1は、図5に示した従来の糸切れ検出装置53
の投光部54、受光部55および本体56に対応する投
光部2、受光部3および本体4を備えている。本体4
は、図5に示した本体56の検波回路61、停止制御回
路62およびカウンタ63に対応する検波回路5、停止
制御回路11およびカウンタ12を備え、検波回路5の
出力に基づいて糸切れが生じているか否かを判別する判
別部13とを備えている。
Referring to FIG. 1, a yarn breakage detecting device 1 according to this embodiment is a conventional yarn breakage detecting device 53 shown in FIG.
The light emitting unit 54, the light receiving unit 55, and the main body 56 are provided with the light emitting unit 2, the light receiving unit 3, and the main body 4. Body 4
Is provided with a detection circuit 61, a stop control circuit 62, and a counter 63 corresponding to the stop control circuit 62 and the counter 63 of the main body 56 shown in FIG. 5, and yarn breakage occurs based on the output of the detection circuit 5. And a determination unit 13 that determines whether or not it is present.

【0017】判別部13は、検波回路5の出力を増幅す
る増幅回路6と、増幅回路6で増幅された信号に対して
しきい値を設定するしきい値設定回路7と、しきい値以
上の各信号時間幅を測定する各信号時間幅測定回路8
と、各信号時間幅測定回路8で測定された時間幅が予め
定められた基準の時間幅以内であるか否かを判別し、糸
切れ信号を選別する糸切れ信号選別回路9と、糸切れ信
号選別回路9が糸切れ信号であるか否かを判別するため
の信号幅(時間幅)を設定して入力する出力信号幅(時
間)設定回路10とを備えている。図1を参照すればわ
かるように、もっとも判別部13で大切なものは、しき
い値設定回路7が設定するしきい値および各信号時間幅
測定回路8が出力する各信号時間幅に対して糸切れ信号
であるか否かを判別するための予め定められた信号幅の
値をいかに設定するかが大切となる。したがって、ま
ず、それらの値に対して得られたデータについて説明す
る。
The discriminator 13 includes an amplifier circuit 6 for amplifying the output of the detector circuit 5, a threshold value setting circuit 7 for setting a threshold value for the signal amplified by the amplifier circuit 6, and a threshold value or more. Each signal time width measurement circuit 8 for measuring each signal time width of
And a thread break signal selecting circuit 9 for judging whether the time width measured by each signal time width measuring circuit 8 is within a predetermined reference time width, and selecting a thread break signal, and a thread break signal The signal selection circuit 9 is provided with an output signal width (time) setting circuit 10 for setting and inputting a signal width (time width) for determining whether or not it is a yarn break signal. As can be seen from FIG. 1, the most important thing in the discriminating unit 13 is the threshold value set by the threshold value setting circuit 7 and the signal time width output by each signal time width measuring circuit 8. It is important how to set the value of the predetermined signal width for determining whether the signal is a thread break signal. Therefore, first, the data obtained for these values will be described.

【0018】図2は、シート状走行糸が糸速100m/
分の場合の毛羽および糸切れ信号、かげろう信号ならび
に異物信号のそれぞれを多数集め、それを分析した結果
を示したグラフであり、特に、図2(a)は、毛羽およ
び糸切れ端部の各々が通過した場合の通過信号の波形を
示したグラフであり、図2(b)は、かげろうによる光
束の乱れ信号の波形を示したグラフであり、図2(c)
は、異物の通過信号の波形を示したグラフである。
In FIG. 2, the sheet-shaped running yarn has a yarn speed of 100 m /
FIG. 2A is a graph showing the results of analyzing a large number of fluff and yarn breakage signals, shadow wax signals, and foreign matter signals in the case of minutes, and in particular, FIG. FIG. 2B is a graph showing a waveform of a passing signal when passing through, and FIG. 2B is a graph showing a waveform of a turbulence signal of a light beam due to eclipse.
[Fig. 4] is a graph showing a waveform of a passing signal of a foreign matter.

【0019】図2(a)に示すように、雑音を排除する
ためのしきい値を5Vとすると、毛羽および糸切れを示
す信号のしきい値以上の時間は、10msec以内であ
った。これに対して、誤動作の原因となっていたかげろ
う信号の5V以上の信号の時間長さは、30msec以
上という結果が得られた。また、同様に誤動作の原因で
あった異物信号のしきい値5V以上の時間長さは、45
msec以上であった。特に、糸速100m/分の場合
に、毛羽および糸切れ信号をしきい値以上の時間長さが
10msecであることから、たとえば糸速を50m/
分にすればしきい値以上の時間長さは、20msec以
内となるはずであり、糸速200m/分の場合には、5
msecとなるはずであり、500m/分の場合には、
2msec以内となるはずである。これに対し、かげろ
う信号の時間幅は、糸速が50m/分から200m/分
の間は、30msec以上という結果が得られており、
これから、かげろう信号に関しては糸速にあまり関係し
ないと見なしてよい。また、異物の信号の時間幅は、ほ
とんど糸速の速度に関係なく、信号のしきい値以上の時
間幅は45msec以上であるという結果が得られた。
As shown in FIG. 2A, when the threshold value for eliminating noise is 5 V, the time over the threshold value of the signal indicating fluff and yarn breakage was within 10 msec. On the other hand, the result was that the time length of the signal of 5V or more of the dark gray signal which caused the malfunction was 30 msec or more. Similarly, the time length of the foreign matter signal threshold value of 5 V or more, which caused the malfunction, is 45
It was msec or more. In particular, when the yarn speed is 100 m / min, the time length at which the fluff and yarn break signal is equal to or more than the threshold value is 10 msec.
If it is set to minutes, the time length above the threshold value should be within 20 msec.
It should be msec, and at 500 m / min,
It should be within 2 msec. On the other hand, the time width of the kagerou signal is 30 msec or more when the yarn speed is between 50 m / min and 200 m / min.
From this, it can be considered that the kagerou signal has little relation to the yarn speed. Further, it was obtained that the time width of the signal of the foreign matter is almost 45 msec or more regardless of the speed of the yarn speed.

【0020】さらに、以上のデータ結果とともに、明ら
かとなったことは、毛羽および糸切れの発生回数は1回
/時間以内であり、かげろうの発生回数は2〜3回/時
間であり、異物の発生回数は1回/日くらいであること
もわかった。
Further, together with the above data results, it was made clear that the number of occurrences of fluff and yarn breakage was within 1 time / hour, the number of occurrence of fogging was 2-3 times / hour, and It was also found that the number of occurrences was about once per day.

【0021】これらのことを考慮し、しきい値設定回路
7はしきい値を設定し、糸切れ信号選別回路9は入力さ
れた信号が糸切れ信号を表わすか否かを判別する。すな
わち、各信号時間幅測定回路8により入力される時間幅
がたとえば5から20msec以内であった場合に、糸
切れ信号選別回路9は糸切れが生じていると判断すれば
よい。そして、停止制御回路11によりシート状走行糸
の走行が停止され、停止されたシート状走行糸の損傷部
も補修できる。
In consideration of these matters, the threshold value setting circuit 7 sets the threshold value, and the yarn breakage signal selection circuit 9 determines whether or not the input signal represents a yarn breakage signal. That is, when the time width input by each signal time width measuring circuit 8 is within 5 to 20 msec, for example, the thread break signal selecting circuit 9 may determine that a thread break has occurred. Then, the stop control circuit 11 stops the traveling of the sheet-shaped traveling yarn, and the damaged portion of the stopped sheet-shaped traveling yarn can be repaired.

【0022】図3は、図1に示した糸切れ検出装置によ
って糸切れ信号およびかげろう信号を判別する動作を説
明するための図である。
FIG. 3 is a diagram for explaining the operation of determining the yarn breakage signal and the caulking signal by the yarn breakage detection device shown in FIG.

【0023】図1および図3を参照して、まず糸切れ信
号が発生した場合について説明する。投光部2より投光
された光束が受光部3に受光されるが、そのときシート
状走行糸に糸切れが発生した場合には、その糸切れが発
生した部分で図3(a)に示すような糸切れ信号が検波
回路5より出力される。その出力は、増幅回路6で増幅
され、しきい値設定回路7で設定されたしきい値以上の
信号が図3(b)に示すような信号として検出される。
そのしきい値以上の信号は各信号時間幅測定回路8で図
3(c)に示すような時間幅として測定され、糸切れ信
号選別回路9へ出力される。糸切れ信号選別回路9に
は、出力信号幅(時間)設定回路10により、図3
(d)に示すような時間幅(10msec)の時間幅設
定値が入力されているので、それらの値の大小を比較
し、測定された時間幅が時間幅設定値よりも小さいので
図3(e)に示すような停止制御回路11およびカウン
タ12を動作させるための信号を所定時間出力する。
First, the case where a yarn break signal is generated will be described with reference to FIGS. 1 and 3. The light beam projected from the light projecting unit 2 is received by the light receiving unit 3. If a yarn breakage occurs in the sheet-shaped traveling yarn at that time, the portion where the yarn breakage occurs is shown in FIG. The yarn breakage signal as shown is output from the detection circuit 5. The output is amplified by the amplifier circuit 6, and a signal equal to or higher than the threshold value set by the threshold value setting circuit 7 is detected as a signal as shown in FIG.
A signal above the threshold value is measured by each signal time width measuring circuit 8 as a time width as shown in FIG. 3C, and is output to the yarn break signal selecting circuit 9. In the yarn breakage signal selection circuit 9, the output signal width (time) setting circuit 10
Since the time width setting values of the time width (10 msec) as shown in (d) are input, the magnitudes of these values are compared, and the measured time width is smaller than the time width setting value. A signal for operating the stop control circuit 11 and the counter 12 as shown in e) is output for a predetermined time.

【0024】これに対し、投光部2より投光された光束
を受光部3で受光したときに、かげろう信号が検波回路
5より図3(a)に示すように検出された場合には、ま
ず、そのかげろう信号は増幅回路6で増幅され、図3
(b)に示すようなしきい値以上の信号として検出され
る。増幅回路6で検出されたしきい値以上の信号は各信
号時間幅測定回路8に入力され、図3(c)に示すよう
な時間幅として測定される。糸切れ信号選別回路9は、
各信号時間幅測定回路8より測定された時間幅と、出力
信号幅(時間)設定回路10により設定された時間幅設
定値(10msec)とを比較し、この場合は各信号時
間幅の方が大きいので停止制御回路11およびカウンタ
12をそれぞれ停止させるための信号も図3(e)に示
すように出力しない。
On the other hand, when the light beam emitted from the light projecting section 2 is received by the light receiving section 3, when the shading signal is detected by the detection circuit 5 as shown in FIG. First, the Kagerou signal is amplified by the amplification circuit 6,
It is detected as a signal above the threshold value as shown in (b). Signals above the threshold detected by the amplifier circuit 6 are input to each signal time width measuring circuit 8 and measured as a time width as shown in FIG. The thread break signal selection circuit 9
The time width measured by each signal time width measuring circuit 8 and the time width set value (10 msec) set by the output signal width (time) setting circuit 10 are compared, and in this case, each signal time width is Since it is large, neither the signal for stopping the stop control circuit 11 nor the counter 12 is output as shown in FIG.

【0025】このようにして、たとえば5から20ms
ec以内の時間幅設定値を出力信号幅(時間)設定回路
10が糸切れ信号選別回路9へ出力することにより、糸
切れ信号選別回路9は、各信号時間幅測定回路8により
測定された各信号時間幅と大小を比較し、時間幅設定値
よりも小さい場合には停止制御回路11およびカウンタ
12の動作を起こさせる信号を出力し、逆に、測定され
た時間幅の方が時間幅設定値よりも大きい場合には停止
制御回路11およびカウンタ12を動作させないので、
これに基づいて、糸切れを起こした損傷部を補修でき
る。
In this way, for example, 5 to 20 ms
The output signal width (time) setting circuit 10 outputs the time width set value within ec to the yarn breakage signal selection circuit 9 so that the yarn breakage signal selection circuit 9 measures each time measured by each signal time width measurement circuit 8. The signal time width is compared with the magnitude, and if it is smaller than the time width setting value, a signal that causes the stop control circuit 11 and the counter 12 to operate is output, and conversely, the measured time width is the time width setting. When it is larger than the value, the stop control circuit 11 and the counter 12 are not operated,
Based on this, it is possible to repair the damaged portion that caused the yarn breakage.

【0026】なお、実施例として糸切れ検出装置を図1
で説明したが、毛羽検出装置についても同様な方法で測
定でき、さらに糸切れおよび毛羽以外にも損傷部を検出
する装置であれば同様な方法でよい。
As an embodiment, a yarn breakage detecting device is shown in FIG.
As described above, the fluff detection device can be measured by the same method, and a similar method may be used as long as it is a device for detecting a damaged portion other than the yarn breakage and the fluff.

【0027】さらに、図1に示した実施例のしきい値設
定回路のしきい値は、シート状走行糸の走行速度および
検波回路の出力に対するノイズの影響を考慮して可変に
しておけばよい。
Further, the threshold value of the threshold value setting circuit of the embodiment shown in FIG. 1 may be made variable in consideration of the influence of noise on the traveling speed of the sheet-shaped traveling yarn and the output of the detection circuit. .

【0028】さらに、出力信号幅(時間)設定回路の設
定する時間幅設定値においても、シート状走行糸の走行
速度、しきい値設定回路7の設定するしきい値、乾燥炉
51の放射する熱の温度、およびシート状走行糸の走行
する環境に応じて、設定を決めればよく、5から20m
secに限定されるものでない。
Further, even in the time width set value set by the output signal width (time) setting circuit, the traveling speed of the sheet-shaped running yarn, the threshold value set by the threshold value setting circuit 7, and the drying oven 51 are radiated. The setting may be determined according to the temperature of heat and the environment in which the sheet-shaped running yarn travels, from 5 to 20 m.
It is not limited to sec.

【0029】なお、図4に示した投光部および受光部と
の関係は、シート状走行糸50を介して対向させていた
が、装置によっては、投光部および受光部をともにシー
ト状走行糸の一側方に設け、他側方にミラーなどの反射
手段を介して光束を投受光するものでもよい。
The relationship between the light projecting portion and the light receiving portion shown in FIG. 4 is opposed to each other through the sheet-shaped traveling yarn 50. However, depending on the device, both the light projecting portion and the light receiving portion may travel in the sheet shape. It may be provided on one side of the yarn and project and receive a light beam on the other side through a reflecting means such as a mirror.

【0030】以上のように、本実施例によれば、従来の
装置では、糸切れ回数が約1回/時間の場合誤動作がそ
れに対して2、3倍発生したが、その原因のほとんどが
かげろうによるものであったが、誤動作を0.1回/時
間以内にすることができた。また、シート状走行糸の走
行中の糸の垂れ下がりによる光束遮断や作業者の手等に
よる光束遮断にも誤動作をしなくなった。誤動作が減っ
たことにともなって、シート状走行糸を糊付する糊付け
機の稼働率が向上し、製品化されたシート状走行糸の品
質も向上した。
As described above, according to the present embodiment, in the conventional device, when the number of yarn breakages is about 1 time / hour, a malfunction occurs two or three times as much as that, but most of the causes are erroneous. However, the malfunction could be controlled within 0.1 times / hour. Further, a malfunction does not occur even if the light flux is blocked by the hanging of the running yarn of the sheet-shaped traveling yarn or the light beam is blocked by the operator's hand. Along with the reduction in malfunctions, the operating rate of the sizing machine that glues the sheet-shaped traveling yarns has improved, and the quality of the commercialized sheet-shaped traveling yarns has also improved.

【0031】[0031]

【発明の効果】以上のように、請求項1に記載の本発明
によれば、糸の損傷部の検出時とそれ以外のものの検出
時とで受光手段の検出信号の出力長さ状態が異なるとい
う新たに発見された自然法則を利用し、受光手段から出
力される信号の出力長さ状態を予め定められた基準長さ
と比較することにより、受光手段から出力される信号が
損傷部を検出した場合の信号であるか否かを判別でき、
損傷部の検出漏れを抑えながらも誤検出を極力防止し得
るに至った。
As described above, according to the present invention described in claim 1, the output length state of the detection signal of the light receiving means is different between when the damaged portion of the yarn is detected and when the other portion is detected. By using the newly discovered natural law that the output length state of the signal output from the light receiving means is compared with a predetermined reference length, the signal output from the light receiving means detects a damaged portion. It is possible to determine whether it is a signal of the case,
It has become possible to prevent erroneous detection as much as possible while suppressing omission of detection of damaged parts.

【0032】請求項2に記載の本発明は、請求項1に記
載の効果に加えて、損傷部とそれ以外のものとの判別に
適した5から20msecに設定された基準長さを用い
て良好に判別できるとともに、損傷部が検出されたと判
別されれば、シート状走行糸が停止制御されて、損傷部
が存在するにも拘わらずそのままシート状走行糸が走行
されて行ってしまう不都合が極力防止できる。
In addition to the effect described in claim 1, the present invention described in claim 2 uses a reference length set to 5 to 20 msec, which is suitable for distinguishing a damaged part from other parts. If it is possible to make a good determination and if it is determined that a damaged portion has been detected, the sheet-shaped traveling yarn is stopped and controlled, and the sheet-shaped traveling yarn travels as it is even though there is a damaged portion. It can be prevented as much as possible.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の一実施例による糸損傷部検出装置と
して用いた糸切れ検出装置の概略ブロック図である。
FIG. 1 is a schematic block diagram of a yarn breakage detection device used as a yarn damage portion detection device according to an embodiment of the present invention.

【図2】図1の糸切れ検出装置の構成を裏付けるための
データ結果を示した図である。
FIG. 2 is a diagram showing data results for supporting the configuration of the yarn breakage detection device of FIG.

【図3】図1の糸切れ検出装置の動作を説明するための
図である。
FIG. 3 is a diagram for explaining the operation of the yarn breakage detection device of FIG.

【図4】走行しているシート状走行糸に対して糸損傷部
検出装置として用いた糸切れ検出装置および毛羽検出装
置の設けられる位置を説明した図である。
FIG. 4 is a diagram illustrating the positions where a yarn breakage detection device and a fluff detection device used as a yarn damage portion detection device are provided for a traveling sheet-shaped traveling yarn.

【図5】図4の糸切れ検出装置の概略ブロック図であ
る。
5 is a schematic block diagram of the yarn breakage detection device of FIG. 4. FIG.

【符号の説明】[Explanation of symbols]

1 糸切れ検出装置 2 投光部 3 受光部 11 停止制御回路 13 判別部 1 Thread Breakage Detection Device 2 Light Emitting Section 3 Light Receiving Section 11 Stop Control Circuit 13 Discriminating Section

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 多本数の糸が同一平面上でシート状に並
んで走行しているシート状走行糸の一側方に投光手段を
設け、該投光手段から投光されて前記シート状走行糸を
横切ってきた光束を受光可能な位置に受光手段を設け、
その間に投射されている光束が前記シート状走行糸の前
記平面上からはみ出した損傷部によって妨げられたとき
に、前記受光手段から出力する信号に基づいて前記損傷
部を検出する糸損傷部検出装置であって、 前記受光手段から出力される信号の出力長さ状態を予め
定められた基準長さと比較し、前記受光手段から出力さ
れる信号が前記損傷部を検出した場合の信号であるか否
かを判別する判別手段を含むことを特徴とする、糸損傷
部検出装置。
1. A light projecting means is provided on one side of a sheet-shaped running yarn in which a large number of yarns run side by side in a sheet shape on the same plane, and the sheet-shaped running yarn is projected by the light projecting means. The light receiving means is provided at a position where the light flux that has crossed the running yarn can be received,
A yarn damage portion detection device for detecting the damaged portion based on a signal output from the light receiving means when the light flux projected during that time is obstructed by the damaged portion protruding from the plane of the sheet-shaped traveling yarn. Comparing the output length state of the signal output from the light receiving means with a predetermined reference length, whether the signal output from the light receiving means is a signal when the damaged portion is detected or not. A yarn damage portion detection device comprising a determination means for determining whether the yarn is damaged.
【請求項2】 前記予め定められた基準長さは、5から
20msecであり、 前記判別手段は、前記受光手段から出力される信号の長
さ状態が前記基準長さ以内の場合に、前記損傷部を検出
した場合の信号である旨の判別信号を出力し、 該判別信号に基づいて、前記シート状走行糸を停止制御
する停止制御手段をさらに含む、請求項1記載の糸損傷
部検出装置。
2. The predetermined reference length is 5 to 20 msec, and the discriminating means determines the damage when the length state of the signal output from the light receiving means is within the reference length. 2. The yarn damage portion detecting device according to claim 1, further comprising stop control means for outputting a discrimination signal indicating that the yarn is detected, and stopping and controlling the sheet-shaped traveling yarn based on the discrimination signal. .
JP28090593A 1993-11-10 1993-11-10 Thread damage part detection device Expired - Lifetime JPH0820378B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28090593A JPH0820378B2 (en) 1993-11-10 1993-11-10 Thread damage part detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28090593A JPH0820378B2 (en) 1993-11-10 1993-11-10 Thread damage part detection device

Publications (2)

Publication Number Publication Date
JPH07134106A true JPH07134106A (en) 1995-05-23
JPH0820378B2 JPH0820378B2 (en) 1996-03-04

Family

ID=17631584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28090593A Expired - Lifetime JPH0820378B2 (en) 1993-11-10 1993-11-10 Thread damage part detection device

Country Status (1)

Country Link
JP (1) JPH0820378B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015129683A (en) * 2014-01-08 2015-07-16 株式会社エムケイティタイセー Foreign matter and bubble detection device and object detection device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4599205B2 (en) * 2005-03-29 2010-12-15 津田駒工業株式会社 Creel Warper device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015129683A (en) * 2014-01-08 2015-07-16 株式会社エムケイティタイセー Foreign matter and bubble detection device and object detection device

Also Published As

Publication number Publication date
JPH0820378B2 (en) 1996-03-04

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