JPS6262938A - Method for inspecting profile of wound yarn package - Google Patents

Method for inspecting profile of wound yarn package

Info

Publication number
JPS6262938A
JPS6262938A JP20087885A JP20087885A JPS6262938A JP S6262938 A JPS6262938 A JP S6262938A JP 20087885 A JP20087885 A JP 20087885A JP 20087885 A JP20087885 A JP 20087885A JP S6262938 A JPS6262938 A JP S6262938A
Authority
JP
Japan
Prior art keywords
package
light
image sensor
signal
inspection
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
JP20087885A
Other languages
Japanese (ja)
Other versions
JPH0236507B2 (en
Inventor
Shuzo Kawamura
川村 周三
Kenichi Inada
稲田 健一
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.)
Murata Machinery Ltd
Original Assignee
Murata Machinery Ltd
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 Murata Machinery Ltd filed Critical Murata Machinery Ltd
Priority to JP20087885A priority Critical patent/JPS6262938A/en
Publication of JPS6262938A publication Critical patent/JPS6262938A/en
Publication of JPH0236507B2 publication Critical patent/JPH0236507B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/006Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package quality control of the package
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

PURPOSE:To detect a package having defective profile, by projecting a light beam to the surface of a yarn layer while shifting the reading position of the inspection surface of a wound yarn package, detecting the reflected light with an image sensor and removing the local impurity such as leaf and other trash from the judging object according to the information of light reflected from plural positions. CONSTITUTION:The inspection apparatus is composed of a projector 5 to project a light beam to the yarn layer surface T of a wound yarn package P and consisting of a light source 2, a mirror 3, etc., a light-detector 7 consisting of an image sensor 6, etc., an analyzer to analyze the information of received light and a rotating apparatus to rotate the package P around the shaft 9 of the package. The inspection point is scanned by the image sensor while rotating the package P around the shaft 9 at a definite rate of rotation. For example, if a cob-webbing is present at a part of the side face of the yarn layer T, protruded parts are developed successively in the lines l15-l25 and the defective profile can be surely distinguished.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は巻糸パッケージの巻形検査方法Gこ関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a winding package inspection method.

〔従来の技術〕[Conventional technology]

自動ワイングー、撚糸機において、巻上げられたパッケ
ージには種々の原因によって巻形不良のパッケージが混
在している。例えば、自動ワイングーで巻上げられたコ
ーンパッケージの巻形不良の代表的なものとして、°第
11図(■)(こ示すパッケージ端面(T)において糸
α1)α2)が糸屑の外側へ外れて巻かれている綾外れ
パッケージ(Pl)、第11図(II)に示す給糸側ボ
ビンの糸がなくなったり、糸切れが生じた時(こ糸端α
3)がパッケージ端面より落ちて巻取管(K)に巻付い
たり、糸屑の中に入った端面落ちパッケージ(P2) 
、第11図(III)に示す巻始めにおけるトラバース
短縮、スリップによる張力低下あるいはバルジによって
生じる菊巻き(G)と称するパッケージ(P3) 、あ
るいは第11図(rl/)に示すノーテンション、また
はリボン巻きによって生じる端面にふくれた段状部(N
)を有する段巻パッケージ(P4)、さらには給糸側精
紡ボビンの形状不良による解じょテンションの変動によ
って生じる年輪巻きパッケージ(P5)等、種々の巻形
不良のパッケージがある。
In automatic wine twisters and yarn twisting machines, packages wound up include packages with poor winding shapes due to various reasons. For example, a typical case of poor winding of a cone package wound by an automatic wine gourd is that the threads α1 and α2 in Figure 11 (■) (at the package end face (T) shown here) come off to the outside of the thread waste. When the unwound package (Pl) runs out of yarn on the yarn feeding side bobbin shown in Fig. 11 (II) or breaks the yarn (thread end α
3) The end of the package (P2) has fallen from the end of the package and wrapped around the take-up tube (K), or has fallen into the thread waste.
, a package (P3) called Kikumaki (G) caused by traverse shortening at the beginning of winding, a drop in tension due to slip, or a bulge as shown in FIG. 11 (III), or a no-tension or ribbon as shown in FIG. 11 (rl/) The stepped part (N
), and furthermore, there are packages with various winding defects such as a step-wound package (P4) which has a defect in the shape of the spinning bobbin on the yarn feeding side, and a ring-wound package (P5) which is caused by fluctuations in unwinding tension due to a defective shape of the spinning bobbin on the yarn feeding side.

このような不良パッケージはそのま〜編機、織機に使用
すると、スムーズな糸屑じょが行われず、大きな張力変
動を生じたり、輪抜は等が生じ糸切れの原因となる。
If such a defective package is used as it is in a knitting machine or a loom, the yarn waste will not be removed smoothly, resulting in large tension fluctuations, ring removal, etc., and yarn breakage.

従って、一般にワイングーにおいて玉揚された巻糸パッ
ケージは、後工程へ搬送されるのに先立って巻形の検査
が作業者の目視により行われている。
Therefore, in general, the winding package doffed in a wine goo is visually inspected by an operator before being transported to a subsequent process.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記検査方法では、微少な不良部分は見逃すことがあり
、また見る角度によっても巻形不良をチェックミスする
ことがある。
In the above-mentioned inspection method, a minute defective part may be overlooked, and a defective winding shape may be checked incorrectly depending on the viewing angle.

本発明は上記問題を解決し、パッケージの検査を正確〔
こしかも巻形不良の形状をも自動チェック可能な方法を
提供するものである。
The present invention solves the above problems and enables accurate package inspection.
Furthermore, the present invention provides a method that can automatically check the shape of a winding defect.

〔問題を解決するための手段〕[Means to solve the problem]

本発明は、検査対象のパッケージの糸層表面に光を照射
し、反射光をイメージセンサで読取る方法であって、パ
ッケージの検査面の読取位置を移動させつつ、定ピッチ
毎の光情報を取込み、上記複数位置の光情報に基づいて
巻形不良を判別するようにしたものである。
The present invention is a method of irradiating light onto the thread layer surface of a package to be inspected and reading the reflected light with an image sensor.The present invention is a method of capturing light information at regular pitches while moving the reading position on the inspection surface of the package. , a winding defect is determined based on the optical information at the plurality of positions.

〔作用〕 例えば、パッケージを軸心回りに1回転させつつ、端面
に光を照射し、反射光をイメージセンサで読取る際、パ
ッケージ端面全周をn等分割し、各分割位置の光情報を
読み取り、該情報を演算処理することにより、巻形不良
の形状が把握される。
[Operation] For example, when rotating the package once around its axis, irradiating the end face with light and reading the reflected light with an image sensor, the entire circumference of the end face of the package is divided into n equal parts, and the optical information at each divided position is read. By arithmetic processing the information, the shape of the winding defect can be grasped.

〔実施例〕〔Example〕

以下、本発明の実施例を図面に従って説明する。 Embodiments of the present invention will be described below with reference to the drawings.

第6図において検査装置(1)の−例を示す。該装置(
1)は、検査対象となる巻糸パッケージ(P)の糸層表
面(T)に光を照射する光源(2)、鏡(3)等の投光
部(4)と、糸層表面で反射した光を受光する鏡(5)
、イメージセンサ(6)等の受光部(7)、および上記
受光した光情報を分析処理する分析装置(8)、さらに
はパッケージの細心(9)を中心にパッケージ(P)を
一定速度で回転させる図示しない回転装置等より構成さ
れる。
FIG. 6 shows an example of the inspection device (1). The device (
1) consists of a light source (2) that irradiates light onto the thread layer surface (T) of the thread package (P) to be inspected, a light emitting unit (4) such as a mirror (3), and a light source (4) that irradiates light on the thread layer surface (T), and Mirror that receives the light (5)
, a light receiving unit (7) such as an image sensor (6), an analyzer (8) that analyzes and processes the received light information, and a package (P) that rotates at a constant speed around the fine details of the package (9). It is composed of a rotating device (not shown), etc.

なお、上記光源(2)から照射される光(10)は平行
光線であって、照射範囲は第7図示の如く、パッケージ
端面(T)を検査する場合は、一つの半径線上の特定位
置(12)を含む狭い範囲(11)に設定する0即ち、
測定位置以外の糸層表面からの反射光が受光部へ入射す
るのを極力少なくするために、パッケージ周囲を暗室状
態とし、測定位置(12)のみに光を照射できるように
投光部には適当な絞りが設けられる。
Note that the light (10) irradiated from the light source (2) is a parallel beam, and the irradiation range is as shown in Figure 7. When inspecting the package end face (T), 12) is set to a narrow range (11) that includes 0, i.e.
In order to minimize the incidence of reflected light from the surface of the yarn layer other than the measurement position entering the light receiving part, the area around the package is kept in a dark room, and the light projecting part is equipped with a light emitting part so that the light can be irradiated only on the measurement position (12). A suitable aperture is provided.

また、受光部(7)においては、測定位置の実像がイメ
ージセンサ(6)の撮像素子上に結ぶように、レンズ(
13)部分はスライド自在であり、測定開始にあたって
作業者はファインダ(14)を見ながら焦点合わせを行
う。
In addition, in the light receiving section (7), a lens (
The part 13) is slidable, and the operator adjusts the focus while looking at the finder (14) before starting the measurement.

以上のような装置において、検査方法を次に説明する。In the apparatus as described above, an inspection method will be explained below.

第7図において、パッケージ(P)を軸心(9)の回り
に一定の速度で矢印(15)方向に回転させつつ、イメ
ージセンサによって測定位置(12)を走査する。例え
ば、パッケージの回転速度を3.03(6)7回転とし
、イメージセンサで蓄積している光情報の読出し周期(
1)をj : 47.3 m5ecとすると1読出し周
期(1)は適宜設定可能であり、糸種によって分割数を
変更することが効果的であり、太糸の場合は読出し周期
(1)を大きく、細糸の場合は周期(1)を小さくする
ことが好ましい。
In FIG. 7, the measurement position (12) is scanned by the image sensor while the package (P) is rotated around the axis (9) at a constant speed in the direction of the arrow (15). For example, if the rotation speed of the package is 3.03 (6) 7 rotations, the readout period of the optical information accumulated in the image sensor (
If 1) is set to j: 47.3 m5ec, one reading period (1) can be set as appropriate, and it is effective to change the number of divisions depending on the yarn type. In the case of large and thin threads, it is preferable to make the period (1) small.

今仮りに第7図の如く、糸層端面(T)の一部に綾落ち
した糸(Yl)が存在するとすると、イメージセンサの
1ラインの撮像素子上(こは、第8図のように、綾落ち
糸(Yl)が測定位置(12)を移動することにより、
読出し周期毎のライン(lj)〜(I m )上の光量
変化部分(Qj)〜(Qm)も撮像素子上を移動するこ
とになる。即ち、模式的には第8図の如きパターンが得
られるはずであるが実際の光電変換した後の、レベル信
号は第2図の状態である。即ち、第1〜5図において、
イメージセンサ(6)により得られる光情報信号(Ll
)はアナログ信号であり、増巾回路(16)、アナログ
−デジタル変換回路(17)を経て得られる信号も第2
図示のレベル信号(L2)である。従ってこの状態では
巻形不良部分を判別することはほとんど不可能である。
Assuming that there is a thread (Yl) that has fallen off on a part of the end face (T) of the thread layer as shown in Fig. 7, it will appear on one line of the image sensor of the image sensor (as shown in Fig. 8). , by moving the twill thread (Yl) to the measurement position (12),
The light amount changing portions (Qj) to (Qm) on the lines (lj) to (I m ) for each readout cycle also move on the image sensor. That is, although a pattern as schematically shown in FIG. 8 should be obtained, the level signal after actual photoelectric conversion is in the state shown in FIG. 2. That is, in FIGS. 1 to 5,
Optical information signal (Ll) obtained by the image sensor (6)
) is an analog signal, and the signal obtained through the amplification circuit (16) and analog-to-digital conversion circuit (17) is also the second signal.
This is the illustrated level signal (L2). Therefore, in this state, it is almost impossible to determine the portion with poor winding shape.

本発明ではさらに、第1図示の如く、上記信号(L2)
は、微分・平滑回路(18)、2値化回路(19)、演
算処理回路(20) 、からなる中央演算装置(21)
によって分析処理される。
In the present invention, as shown in the first diagram, the above signal (L2)
is a central processing unit (21) consisting of a differentiation/smoothing circuit (18), a binarization circuit (19), and an arithmetic processing circuit (20).
Analyzed and processed by.

第2図において、各データ信号(11)〜(In)は前
述した周期(1)毎に読出された信号で、64分割の場
合は信号(11)〜(in)が64本並ぶことになる。
In Fig. 2, each data signal (11) to (In) is a signal read out every cycle (1) mentioned above, and in the case of 64 divisions, 64 signals (11) to (in) are lined up. .

巾(S)は第7図の光照射範囲(11)の半径長さに相
当する。
The width (S) corresponds to the radial length of the light irradiation range (11) in FIG.

上記A/D変換後の信号(L2)を微分・平滑回路(1
8)によって処理して得られる信号が第3図に示される
。即ち、信号(L2)におけるレベル変化部分がさらに
顕著になっており、さらに、信号(L3)は2値化回路
(19)によって処理され、第4図示の信号(L4)と
なる。ここに到って、微少なレベル変化部分が削除され
、レベルがrOJと「1」の信号に変化する。この時点
においても、実際の巻形不良部分(22)と他の突出部
分(23)が混在している。
The signal after A/D conversion (L2) is differentiated and smoothed by the differential/smoothing circuit (1
8) is shown in FIG. 3. That is, the level change part in the signal (L2) has become more pronounced, and the signal (L3) is further processed by the binarization circuit (19) to become the signal (L4) shown in FIG. At this point, the minute level change portion is deleted, and the level changes to rOJ and a signal of "1". Even at this point, the actual winding defective portion (22) and other protruding portions (23) coexist.

続いて、2値化された信号(L4)はさらに演算回路(
20)によって関数演算処理され、1走査ライン上のパ
ラメータ(X)と、各ライン方向即ち時間方向における
パラメータ(Y)が関数(f(x、y))として処理さ
れることにより、第5図示の信号(L5)が得られる。
Next, the binarized signal (L4) is further passed through an arithmetic circuit (
20), and the parameter (X) on one scanning line and the parameter (Y) in each line direction, that is, in the time direction, are processed as a function (f(x, y)), as shown in FIG. A signal (L5) is obtained.

即ち、第4図のライン(17)において見られた例えば
、パッケージ表面に付着した葉カス等の°不純物による
突出部分(23)が第5図のライン(17)では消滅し
ており、該奨出部分は巻形不良部分ではないことがわか
る。従って第5図の如く、ライン(115)〜ライン(
125)において突出した部分が連続的に表われ、第8
図の模式図と一致した信号が得られるのである〇即ち、
綾落ち糸α1)の状態が第5図の如く明瞭に表われ、第
7図のような実際の綾落は目視では見逃すことがあるが
、本発明によれば確実に把握することができるのである
。第5図の信号(L5)に基づいて、判断(24)され
不良信号(L6)が出力される。
That is, for example, the protruding portion (23) caused by impurities such as leaf crumbs adhering to the package surface, which was seen in line (17) in FIG. 4, has disappeared in line (17) in FIG. It can be seen that the protruding portion is not a portion with poor winding shape. Therefore, as shown in Fig. 5, line (115) to line (
125), the protruding parts appear continuously, and the 8th
A signal that matches the schematic diagram in the figure is obtained. In other words,
The state of the twill drop α1) is clearly shown as shown in Fig. 5, and the actual twill drop as shown in Fig. 7 may be overlooked with the naked eye, but according to the present invention, it can be accurately grasped. be. Based on the signal (L5) in FIG. 5, a judgment is made (24) and a defective signal (L6) is output.

上記分析装置(8)におけるデータ処理について、2値
化された信号(L4)を関数処理して得られる信号(L
5)を得る方法について第9図第10図において説明す
る。前記の関数f (xly)は例えば次の式で表わさ
れる。即ち、 f(x、 y):=f(x、 Y)×(f(X+1、y
)+f(X+1、X+1)+f (X%y+1)+f 
(x−1、y’+1)+f (x−1% y)+f(x
−1、y−1)+f (x、 y−1)十f (X+1
、y−1))・・・・・・・・・・・・(イ)ここで、
Xは前記した如く、イメージセンサの分解能に関連し、
イメージセンサの撮像素子(CCD)が2048ビツト
であればXは1〜2048の値であり、分割数が本実施
例の如<64であればyは1〜64の値をとる。
Regarding data processing in the analyzer (8), the signal (L4) obtained by functionally processing the binarized signal (L4)
5) will be explained with reference to FIGS. 9 and 10. The above function f (xly) is expressed, for example, by the following equation. That is, f(x, y):=f(x, Y)×(f(X+1, y
)+f(X+1,X+1)+f (X%y+1)+f
(x-1, y'+1)+f (x-1% y)+f(x
-1, y-1) + f (x, y-1) tenf (X+1
,y-1))・・・・・・・・・・・・(a) Here,
As mentioned above, X is related to the resolution of the image sensor,
If the imaging device (CCD) of the image sensor is 2048 bits, then X takes a value from 1 to 2048, and if the number of divisions is <64 as in this embodiment, y takes a value from 1 to 64.

例えば、第9図のX=:3%y=3について式(イ)の
値を計算すると、第9図の各位(0または1)を代入す
るとf(3,3)=Oとなる。
For example, when calculating the value of equation (a) for X=:3%y=3 in FIG. 9, f(3,3)=O is obtained by substituting each position (0 or 1) in FIG.

またf(2,3)を計算すると、やはりf□、3)二〇
となる。またf(5,3)= 3 、f(5,4)=3
の如くなる0このようにして得られるデータを波形信号
として表わしたのが第5図の信号(L5)となるのであ
る◇ なお、式(イ)は、場合によっては、一部を削除し、 f(x%y)=f(x、y)X(f(X+1、y)+f
(x、X+1))・・・・・・・・・0口) の如くすることも可能である。
Also, when f(2,3) is calculated, it becomes f□,3)20. Also, f(5,3)=3, f(5,4)=3
The data obtained in this way is expressed as a waveform signal as the signal (L5) in Fig. f(x%y)=f(x,y)X(f(X+1,y)+f
It is also possible to do something like (x,

以上の実施例においては、コーンパッケージの端面につ
いて検査する方法について述べたが、勿論チーズパッケ
ージ、あるいは、仮撚機、撚糸機等で生産されるパッケ
ージについても同様に検査可能である。
In the above embodiments, a method of inspecting the end face of a cone package has been described, but it is of course possible to similarly inspect a cheese package or a package produced using a false twisting machine, a twisting machine, or the like.

また、上記実施例では、検査面の読取位置を移動させる
手段として検査対象であるパッケージを回転させたが、
パッケージを位置固定し、投光部、受光部の検査装置側
を移動させることも可能であり、さらには、パッケージ
の端面を読取る場合、投光側から照射される光をパッケ
ージの直径巾で照射させれば、パッケージを回転させる
ことなく一方向の平行移動によっても読取ることができ
る。
Furthermore, in the above embodiment, the package to be inspected was rotated as a means for moving the reading position of the inspection surface.
It is also possible to fix the package position and move the inspection equipment side of the light emitter and light receiver.Furthermore, when reading the end face of the package, the light emitted from the light emitter side can be irradiated across the diameter of the package. If the package is rotated, it can be read by parallel movement in one direction without rotating the package.

〔発明の効果〕〔Effect of the invention〕

以上のように本発明によると、パッケージを回転させて
、定ピッチ毎の測定信号から巻形不良を判断するので、
葉カス、実カス等の局所的な不純物を判断対象から除外
できると共に、巻形不良の形状をも認識でき、極めて正
確な巻形検査を行うことができる。
As described above, according to the present invention, since the package is rotated and winding defects are determined from measurement signals for each fixed pitch,
Not only can local impurities such as leaf scraps and fruit scraps be excluded from the determination target, but also the shape of poor roll shape can be recognized, making it possible to perform an extremely accurate roll shape inspection.

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

第1図は光情報の分析方法を示すブロック図、第2図〜
第5図は分析工程における波形信号の変化を示す波形線
図、第6図は巻形検査装置の一例を示す概略構成図、第
7図はパッケージの測定位置と綾落糸の関係を示す平面
図、m8図はパッケージ回転によって測定位置に表われ
る綾落糸の位置を示す説明模式図、第9図第10図は波
形信号(L4)をさらに処理する方法を説明する模式図
、第11図(1)〜(V)は巻形不良パッケージの代表
例と示す斜視図である。 (1)・・・検査装置   (4)・・・投光部(6)
・・・イメージセンサ   (7)・・・受光部(8)
・・・分析装置     (12)・・・測定位置(L
l)〜(L5)・・・信号
Figure 1 is a block diagram showing the optical information analysis method, Figure 2~
Fig. 5 is a waveform diagram showing changes in waveform signals in the analysis process, Fig. 6 is a schematic configuration diagram showing an example of a winding inspection device, and Fig. 7 is a plane showing the relationship between the measurement position of the package and the traverse thread. Fig. m8 is a schematic explanatory diagram showing the position of the twill thread appearing at the measurement position due to package rotation, Fig. 9 and Fig. 10 are schematic diagrams explaining the method of further processing the waveform signal (L4), Fig. 11 (1) to (V) are perspective views showing typical examples of packages with poor winding shapes. (1)...Inspection device (4)...Light emitter (6)
...Image sensor (7) ...Light receiving section (8)
...Analyzer (12)...Measurement position (L
l) ~ (L5)...Signal

Claims (1)

【特許請求の範囲】[Claims] 検査対象のパッケージの糸層表面に光を照射し、反射光
をイメージセンサで読み取る方法であって、パッケージ
の検査面の読取位置を移動させつつ、定ピッチ毎の光情
報を取込み、複数位置の光情報に基づいて巻形不良を判
別することを特徴とする巻糸パッケージの巻形検査方法
This is a method in which light is irradiated onto the thread layer surface of the package to be inspected and the reflected light is read by an image sensor.The method captures light information at regular pitches while moving the reading position on the inspection surface of the package. A method for inspecting the winding shape of a winding package, characterized by determining winding defects based on optical information.
JP20087885A 1985-09-10 1985-09-10 Method for inspecting profile of wound yarn package Granted JPS6262938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20087885A JPS6262938A (en) 1985-09-10 1985-09-10 Method for inspecting profile of wound yarn package

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20087885A JPS6262938A (en) 1985-09-10 1985-09-10 Method for inspecting profile of wound yarn package

Publications (2)

Publication Number Publication Date
JPS6262938A true JPS6262938A (en) 1987-03-19
JPH0236507B2 JPH0236507B2 (en) 1990-08-17

Family

ID=16431740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20087885A Granted JPS6262938A (en) 1985-09-10 1985-09-10 Method for inspecting profile of wound yarn package

Country Status (1)

Country Link
JP (1) JPS6262938A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4010884A1 (en) * 1989-04-04 1990-10-11 Murata Machinery Ltd METHOD FOR CHECKING A COIL
JPH06294646A (en) * 1993-03-12 1994-10-21 Murata Mach Ltd Package inspection equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52110949A (en) * 1976-03-09 1977-09-17 Mitsubishi Rayon Co Method of inspective surface defect wind thread bunch
JPS5920592A (en) * 1982-07-08 1984-02-02 ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52110949A (en) * 1976-03-09 1977-09-17 Mitsubishi Rayon Co Method of inspective surface defect wind thread bunch
JPS5920592A (en) * 1982-07-08 1984-02-02 ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4010884A1 (en) * 1989-04-04 1990-10-11 Murata Machinery Ltd METHOD FOR CHECKING A COIL
DE4010884C3 (en) * 1989-04-04 1998-08-13 Murata Machinery Ltd Procedure for testing a package
JPH06294646A (en) * 1993-03-12 1994-10-21 Murata Mach Ltd Package inspection equipment

Also Published As

Publication number Publication date
JPH0236507B2 (en) 1990-08-17

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