JPH08315651A - Bump-shaped defect detecting device on cable surface - Google Patents
Bump-shaped defect detecting device on cable surfaceInfo
- Publication number
- JPH08315651A JPH08315651A JP14554395A JP14554395A JPH08315651A JP H08315651 A JPH08315651 A JP H08315651A JP 14554395 A JP14554395 A JP 14554395A JP 14554395 A JP14554395 A JP 14554395A JP H08315651 A JPH08315651 A JP H08315651A
- Authority
- JP
- Japan
- Prior art keywords
- outer diameter
- output
- cable
- detecting means
- variation
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に、ケーブルの絶縁
体，内部半導電層，シース等の被覆工程でケーブル表面
に生じるコブ状の欠陥部分を検出するのに好適なケーブ
ル表面のコブ状欠陥検出装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is particularly suitable for detecting bump-like defects on the cable surface during the coating process of the cable insulator, inner semiconductive layer, sheath, etc. The present invention relates to a defect detection device.
【０００２】[0002]
【従来の技術】ケーブルの絶縁体，内部半導電層，シー
ス等を押出機により被覆する工程において、異物（押出
被覆材料が押出口周辺に付着して固まったもの等）の混
入等によりケーブル表面にコブ状の欠陥が生じることが
ある。そのような欠陥が生じると、ケーブルの性能を低
下させたり、外観を悪くしたりする。そこで、従来は、
ケーブルの被覆工程中ケーブル表面の状態を常時監視し
て、コブ状欠陥を検出するようにしていた。2. Description of the Related Art In the process of coating an insulator, an inner semiconductive layer, a sheath, etc. of a cable with an extruder, the surface of the cable may be contaminated with foreign matter (such as the extrusion coating material adhered to the periphery of the extrusion port and solidified). A bump-like defect may occur in the. When such defects occur, the performance of the cable is deteriorated and the appearance thereof is deteriorated. So, conventionally,
During the coating process of the cable, the condition of the cable surface is constantly monitored to detect the bump defect.
【０００３】従来、ケーブル表面のコブ状の欠陥を検出
する装置としては、走線中のケーブルの外径寸法の変化
を測定し、その変化量が設定値以上になったか否かで、
欠陥の発生を検出するものが一般的に使用されている。
そのように走線中のケーブルの外径寸法の変化を測定す
る方式としては、次のようなものがある。Conventionally, as a device for detecting a bump-like defect on the surface of a cable, a change in the outer diameter of the cable during running is measured, and it is determined whether or not the change amount exceeds a set value.
Those that detect the occurrence of defects are commonly used.
As a method for measuring the change in the outer diameter of the cable in the running line, there is the following method.
【０００４】（第１従来例）図４は、第１従来例の原理
図である。図４において、８はケーブル、９はコブ状欠
陥部、１０，１１はローラ、１２，１３は支持杆、１
４，１５はスプリング、１６，１７は変位−電気信号変
換器である。スプリング１４，１５により、ローラ１
０，１１を上下、あるいは、左右からケーブル８に押し
当てながら、ケーブル８を矢印Ｆ方向に走線させる。そ
して、ローラ１０，１１の支持杆１２，１３の変位量を
変位−電気信号変換器１６，１７で検出することによ
り、ケーブル８の外径寸法の変化を測定する。例えば、
コブ状欠陥部９がローラ１０の位置に来ると、ローラ１
０が上方に変位して、外径寸法が増加し、その測定値が
所定値を超えたことにより、コブ状欠陥部９の存在を検
知する。(First Conventional Example) FIG. 4 is a principle diagram of the first conventional example. In FIG. 4, 8 is a cable, 9 is a bump-shaped defective portion, 10 and 11 are rollers, 12 and 13 are support rods, and 1
4, 15 are springs, and 16 and 17 are displacement-electric signal converters. Roller 1 by springs 14 and 15
The cable 8 is run in the direction of arrow F while pressing 0, 11 from above and below or from the left and right against the cable 8. Then, the displacement of the supporting rods 12, 13 of the rollers 10, 11 is detected by the displacement-electrical signal converters 16, 17 to measure the change in the outer diameter of the cable 8. For example,
When the bump-shaped defective portion 9 comes to the position of the roller 10, the roller 1
The presence of the bump-shaped defect portion 9 is detected when 0 is displaced upward, the outer diameter dimension is increased, and the measured value exceeds a predetermined value.
【０００５】（第２従来例）図５は、第２従来例の原理
図であり、ケーブルの走線方向から見た断面図として示
している。図５において、８はケーブル、１８は発光
体、１９は光センサである。発光体１８により、走行し
ているケーブル８に対して平行なレーザ光を当て、ケー
ブル８で遮られなかったレーザ光を、発光体１８と対向
する光センサ１９により検知する。そして、光センサ１
９の出力変動に基づいてケーブル８の外径寸法の変化を
測定する。例えば、コブ状欠陥部が光センサ１９の位置
に来ると、レーザ光の遮られる割合が多くなって光セン
サ１９の出力が減少することにより、コブ状欠陥部の存
在を検知する。さらに、光センサ１９の出力を時間微分
することにより、その出力変化をより鋭敏に検知するよ
うにしたものもある。(Second Conventional Example) FIG. 5 is a principle diagram of the second conventional example and is shown as a sectional view as seen from the running direction of the cable. In FIG. 5, 8 is a cable, 18 is a light emitter, and 19 is an optical sensor. A laser beam parallel to the traveling cable 8 is applied by the light emitter 18, and the laser light not blocked by the cable 8 is detected by an optical sensor 19 facing the light emitter 18. And the optical sensor 1
The change in the outer diameter dimension of the cable 8 is measured based on the output fluctuation of the cable 9. For example, when the bump-shaped defective portion is located at the position of the optical sensor 19, the presence of the bump-shaped defective portion is detected by increasing the ratio of the laser light blocked and decreasing the output of the optical sensor 19. Further, there is also a sensor in which the output of the optical sensor 19 is time-differentiated to detect the output change more sharply.
【０００６】（第３従来例）上記光センサ１９のような
光センサを、ケーブルの走線方向に僅かな間隔（例え
ば、数cm）をあけて２つ設け、一方の出力から他方の出
力を減算する。そのようにして、ケーブル外径の変化を
検出する。例えば、コブ状欠陥部が一方の光センサの位
置に来ると、その光センサの出力は減少するが、他方の
光センサの出力は前のままで、両者の出力に差が生じ
る。その差を検出することにより、コブ状欠陥部の存在
を検知する。(Third Conventional Example) Two optical sensors such as the above-mentioned optical sensor 19 are provided at a slight interval (for example, several cm) in the running direction of the cable, and one output is output from the other output. Subtract. In that way, changes in the outer diameter of the cable are detected. For example, when the bump-shaped defective portion comes to the position of one of the photosensors, the output of the photosensor decreases, but the output of the other photosensor remains the same as before, resulting in a difference between the outputs. By detecting the difference, the presence of the bump-shaped defect portion is detected.
【０００７】なお、このようなケーブル表面のコブ状欠
陥検出装置に関連する従来の文献としては、例えば、特
開昭54-5764 号公報，特開昭62-3602 号公報等がある。Note that, as conventional documents relating to such a bump-like defect detecting device on the surface of a cable, there are, for example, JP-A-54-5764 and JP-A-62-3602.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、ケーブ
ル表面には正常部分でも、コア撚り合わせの撚目やコア
抑え巻きテープのラップ目やコア状に巻き付けた金属テ
ープの巻き皺等がそのまま表面に現れて、連続的に凹凸
が生じることがある。そのようなケーブルにおいてコブ
状欠陥を検出する場合、前記した従来の技術では、検出
した凹凸が正常部のものなのか、異常なコブ状の欠陥な
のか判別できないという問題点があった。そこで、正常
な凹凸は検出せずに、コブ状の欠陥だけを検出しようと
して検出の閾値を高めに設定すると、本物のコブ状の欠
陥まで検出洩れとなる可能性が出てくる。逆に、コブ状
の欠陥を洩らさず検出しようとうして検出の閾値を低め
に設定すると、誤検出が多くなる。本発明は、そのよう
な問題点を解決し、正常表面で連続的に現れている凹凸
と区別して、コブ状の欠陥のみを検出できるケーブル表
面のコブ状欠陥検出装置を提供することを課題とするも
のである。However, even in the normal portion of the cable surface, the twists of the core twisting, the wraps of the core restraining winding tape, and the wrinkles of the metal tape wound in the core form appear on the surface as they are. As a result, unevenness may occur continuously. In the case of detecting a bump-like defect in such a cable, the above-mentioned conventional technique has a problem that it is impossible to determine whether the detected unevenness is a normal portion or an abnormal bump-like defect. Therefore, if the detection threshold value is set to a high value in order to detect only bumpy defects without detecting normal irregularities, there is a possibility that even real bumpy defects may be missed. On the contrary, if the detection threshold value is set to a low value in order to detect the bump-like defects without omission, erroneous detection increases. It is an object of the present invention to solve such a problem, and to provide a bump-like defect detecting device for a cable surface capable of detecting only bump-like defects by distinguishing from irregularities that continuously appear on a normal surface. To do.
【０００９】[0009]
【課題を解決するための手段】前記課題を解決するた
め、本発明のケーブル表面のコブ状欠陥検出装置では、
走線中のケーブルの外径の変動量を検出する外径変動検
出手段と、前記外径変動検出手段の出力に基づいて、ケ
ーブルの外径変動の周波数を検出する変動周波数検出手
段と、前記外径変動検出手段の出力が所定値を超えたと
き外径異常検出信号を出力する異常変動検出手段と、前
記変動周波数検出手段の出力が所定の範囲から外れたと
き周波数異常検出信号を出力する異常周波数検出手段
と、前記外径異常検出信号と周波数異常検出信号とが同
時に出力されたとき欠陥検出信号を出力する論理積回路
とを具えることとした。In order to solve the above-mentioned problems, the apparatus for detecting a bump-like defect on the surface of a cable according to the present invention comprises:
An outer diameter fluctuation detecting means for detecting a fluctuation amount of the outer diameter of the cable in the running line, and a fluctuation frequency detecting means for detecting a frequency of the outer diameter fluctuation of the cable based on an output of the outer diameter fluctuation detecting means, Abnormal variation detection means that outputs an outer diameter abnormality detection signal when the output of the outer diameter variation detection means exceeds a predetermined value, and outputs a frequency abnormality detection signal when the output of the variation frequency detection means deviates from a predetermined range. An abnormal frequency detection means and a logical product circuit for outputting a defect detection signal when the outer diameter abnormality detection signal and the frequency abnormality detection signal are simultaneously output are provided.
【００１０】[0010]
【作 用】外径変動検出手段により走線中のケーブル
の外径の変動量を検出し、該外径変動検出手段の出力に
基づいて、変動周波数検出手段によりケーブルの外径変
動の周波数を検出する。そして、前記外径変動検出手段
の出力が所定値を超えたとき、異常変動検出手段により
外径異常検出信号を出力し、前記変動周波数検出手段の
出力が所定の範囲から外れたとき、異常周波数検出手段
により周波数異常検出信号を出力する。そして、論理積
回路により前記異常変動検出手段の出力と異常周波数検
出手段の出力の論理積をとって、前記外径異常検出信号
と周波数異常検出信号とが同時に出力されたとき欠陥検
出信号を出力する。その結果、正常表面で連続的に現れ
ている凹凸は検出しなくなり、コブ状の欠陥のみを検出
することができる。[Operation] The outer diameter fluctuation detecting means detects the fluctuation amount of the outer diameter of the cable in the running line, and the fluctuation frequency detecting means detects the frequency of the outer diameter fluctuation of the cable based on the output of the outer diameter fluctuation detecting means. To detect. When the output of the outer diameter variation detecting means exceeds a predetermined value, the abnormality variation detecting means outputs an outer diameter abnormality detection signal, and when the output of the variation frequency detecting means deviates from the predetermined range, the abnormal frequency is detected. A frequency abnormality detection signal is output by the detection means. Then, a logical product circuit calculates the logical product of the output of the abnormal variation detection means and the output of the abnormal frequency detection means, and outputs a defect detection signal when the outer diameter abnormality detection signal and the frequency abnormality detection signal are simultaneously output. To do. As a result, the irregularities that continuously appear on the normal surface are not detected, and only bump-shaped defects can be detected.
【００１１】[0011]
【実施例】以下、本発明の実施例を図面に基づいて詳細
に説明する。図１は、本発明のケーブル表面のコブ状欠
陥検出装置の概略の構成を示すブロック図である。図１
において、１は外径変動検出部、２は変動周波数検出
部、３は異常変動検出部、４は異常周波数検出部、５は
論理積回路である。外径変動検出部１は、図４，図５に
示したような従来の技術を使って、ケーブル外径に対応
した電圧を出力する。その出力例を図に示すと、例え
ば、図３のＡのようになる。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a bump-like defect detecting device for a cable surface according to the present invention. FIG.
In FIG. 1, 1 is an outer diameter fluctuation detecting section, 2 is a fluctuation frequency detecting section, 3 is an abnormal fluctuation detecting section, 4 is an abnormal frequency detecting section, and 5 is an AND circuit. The outer diameter variation detecting section 1 outputs a voltage corresponding to the outer diameter of the cable by using the conventional technique as shown in FIGS. An example of the output is shown in FIG. 3A, for example.
【００１２】区間イ、ハ、ホは、正常部分であり、テー
プのラップ目等による凹凸がほぼ一定の間隔で現れてい
る。区間ロは、押出機の押出量の微細な変動等による小
さな皺等が現れた部分である。この部分は、皺が小さく
ケーブル性能上も、美観上もほとんど問題とならない。
また、区間ニは、コブ状欠陥がある部分である。Sections a, c, and e are normal portions, and irregularities due to the tape laps and the like appear at substantially regular intervals. The section B is a portion where small wrinkles and the like appear due to minute fluctuations in the extrusion amount of the extruder. This part has small wrinkles, and there is almost no problem in terms of cable performance and aesthetics.
Further, the section D is a portion having a bump defect.
【００１３】変動周波数検出部２は、周知の周波数検出
器により構成され、外径変動検出部１の出力を受けて、
その変動の周波数に対応した電圧を出力する。その出力
例を図に示すと、例えば、図３のＢのようになる。区間
ロでは、変動周波数が高くなって上限値ＶS1を超えてい
る。また、区間ニでは、変動周波数が低くなって下限値
ＶS2を下まわっている。The fluctuating frequency detecting section 2 is composed of a well-known frequency detector, and receives the output of the outer diameter fluctuation detecting section 1,
The voltage corresponding to the frequency of the fluctuation is output. An example of the output is shown in FIG. 3B, for example. In the section B, the fluctuating frequency becomes higher and exceeds the upper limit value V S1 . In section d, the fluctuating frequency becomes lower and falls below the lower limit value V S2 .
【００１４】異常変動検出部３は、外径変動検出部１の
出力を受けて、それが閾値ＶS を超えたとき検出信号を
出力する。その出力例を図に示すと図３のＣのようにな
る。図３のＣに示すように、正常な区間イ，ハ，ホでも
異常変動検出部３から検出信号が出力される。一方、区
間ロでは、凹凸の高さが低いため、検出信号は出力され
ない。また、区間ニでは、閾値ＶS を超えているため検
出信号が出力される。The abnormal variation detector 3 receives the output of the outer diameter variation detector 1 and outputs a detection signal when it exceeds the threshold value V S. An example of the output is shown in FIG. 3C. As shown in C of FIG. 3, the abnormal fluctuation detection unit 3 outputs a detection signal even in normal sections A, C, and E. On the other hand, in section B, since the height of the unevenness is low, the detection signal is not output. Further, in the section d, the detection signal is output because it exceeds the threshold value V S.
【００１５】図２は、異常変動検出部の概略の構成を示
す図である。図２において、６は比較回路、７は閾値設
定手段である。閾値設定手段７は、デジタルスイッチや
ボリューム等により比較回路６の閾値ＶS を設定する。
比較回路６は、外径変動検出部１の出力電圧Ａを閾値Ｖ
S と比較して、出力電圧Ａが閾値ＶS より大きいとき検
出信号Ｃを出力する。FIG. 2 is a diagram showing a schematic configuration of the abnormal change detector. In FIG. 2, 6 is a comparison circuit and 7 is a threshold value setting means. The threshold setting means 7 sets the threshold V S of the comparison circuit 6 with a digital switch, a volume, or the like.
The comparison circuit 6 sets the output voltage A of the outer diameter variation detection unit 1 to a threshold value V.
Compared with S , the detection signal C is output when the output voltage A is larger than the threshold value V S.
【００１６】異常周波数検出部４は、変動周波数検出部
２の出力を受けて、それが上限値ＶS1を超えているか、
下限値ＶS2を下まわっているとき、検出信号を出力す
る。その出力例を図に示すと図３のＤのようになる。図
３のＤに示すように、変動周波数検出部２の出力が上限
値ＶS1を超えている区間ロと、下限値ＶS2を下まわって
いる区間ニで、異常周波数検出部４から検出信号が出力
される。The abnormal frequency detector 4 receives the output of the fluctuating frequency detector 2 and determines whether it exceeds the upper limit value V S1 .
When it is below the lower limit value V S2 , a detection signal is output. FIG. 3D shows the output example in the figure. As shown in D of FIG. 3, in the section b in which the output of the fluctuating frequency detection unit 2 exceeds the upper limit value V S1 , and in the section d in which the output is below the lower limit value V S2 , the detection signal from the abnormal frequency detection unit 4 is detected. Is output.
【００１７】異常周波数検出部４は、図２に示す異常変
動検出部３の構成と同様に、閾値設定手段と比較回路と
により構成される。ただ、異常周波数検出部４の閾値設
定手段は、上限値ＶS1と下限値ＶS2の２つの値を設定
し、比較回路は、入力電圧が上限値ＶS1を超えるか、下
限値ＶS2を下まわったときに出力信号を発生するように
する必要がある。The abnormal frequency detecting section 4 is composed of a threshold setting means and a comparing circuit, similarly to the structure of the abnormal change detecting section 3 shown in FIG. However, the threshold value setting means of the abnormal frequency detection unit 4 sets two values, the upper limit value V S1 and the lower limit value V S2 , and the comparator circuit determines whether the input voltage exceeds the upper limit value V S1 or the lower limit value V S2 . It is necessary to generate an output signal when moving down.
【００１８】論理積回路５は、異常変動検出部３の出力
と異常周波数検出部４の出力の論理積をとって、両者が
同時に出力されているときのみ、出力Ｅを発生する。そ
れを図に示すと図３のＥのようになる。The AND circuit 5 takes the logical product of the outputs of the abnormal fluctuation detecting section 3 and the abnormal frequency detecting section 4 and generates the output E only when both are output at the same time. This is shown as E in FIG.
【００１９】このようにして、ケーブルの外径変動が異
常値を示したというだけでなく、外径変動の起こり方
が、正常時の周期と異なったことも条件としてコブ状欠
陥の検出を行う。したがって、従来判別が難しかった、
正常な凹凸とコブ状欠陥とを明確に判別してコブ状欠陥
のみを検知することができる。In this way, the bump-like defect is detected not only when the outer diameter variation of the cable shows an abnormal value, but also when the occurrence of the outer diameter variation is different from the normal cycle. . Therefore, it was difficult to discriminate in the past.
Normal bumps and bump defects can be clearly discriminated and only bump defects can be detected.
【００２０】[0020]
【発明の効果】以上述べた如く、本発明のケーブル表面
のコブ状欠陥検出装置によれば、コブ状の欠陥を、正常
表面で連続的に現れている凹凸と区別して検出できる。
その結果、欠陥として検出する際のしきい値を低めに設
定しても、正常な凹凸は検出しなくなるので、誤検出を
することなく、コブ状の欠陥を洩らさず検出することが
できる。As described above, according to the apparatus for detecting bump-like defects on the surface of a cable according to the present invention, bump-like defects can be detected separately from the irregularities that continuously appear on the normal surface.
As a result, even if the threshold value for detecting as a defect is set to a low value, the normal unevenness is not detected, so that it is possible to detect a bump-shaped defect without erroneous detection. .
【図１】 本発明のケーブル表面のコブ状欠陥検出装置
の概略の構成を示すブロック図FIG. 1 is a block diagram showing a schematic configuration of a bump-like defect detecting device for a cable surface according to the present invention.
【図２】 異常変動検出部の概略の構成を示す図FIG. 2 is a diagram showing a schematic configuration of an abnormal change detection unit.
【図３】 各部の出力の一例を示す図FIG. 3 is a diagram showing an example of output of each unit.
【図４】 第１従来例の原理図FIG. 4 is a principle diagram of a first conventional example.
【図５】 第２従来例の原理図FIG. 5 is a principle diagram of a second conventional example.
１ 外径変動検出部 ２ 変動周波数検出部 ３ 異常変動検出部 ４ 異常周波数検出部 ５ 論理積回路 ６ 比較回路 ７ 閾値設定手段 ８ ケーブル ９ コブ状欠陥部 １０，１１ ローラ １２，１３ 支持杆 １３，１４ スプリング １６，１７ 変位−電気信号変換器 １８ 発光体 １９ 光センサ 1 outer diameter fluctuation detection section 2 fluctuation frequency detection section 3 abnormal fluctuation detection section 4 abnormal frequency detection section 5 AND circuit 6 comparison circuit 7 threshold setting means 8 cable 9 bump-shaped defect section 10, 11 roller 12, 13 support rod 13, 14 springs 16 and 17 displacement-electrical signal converter 18 luminous body 19 optical sensor
Claims (1)
する外径変動検出手段(1) と、前記外径変動検出手段
(1) の出力に基づいて、ケーブルの外径変動の周波数を
検出する変動周波数検出手段(2) と、前記外径変動検出
手段(1) の出力が所定値を超えたとき外径異常検出信号
を出力する異常変動検出手段(3) と、前記変動周波数検
出手段(2) の出力が所定の範囲から外れたとき周波数異
常検出信号を出力する異常周波数検出手段(4) と、前記
外径異常検出信号と周波数異常検出信号とが同時に出力
されたとき欠陥検出信号を出力する論理積回路(5)とを
具えたことを特徴とするケーブル表面のコブ状欠陥検出
装置。1. An outer diameter fluctuation detecting means (1) for detecting a fluctuation amount of an outer diameter of a cable in a running line, and the outer diameter fluctuation detecting means.
Fluctuation frequency detection means (2) that detects the frequency of outer diameter fluctuation of the cable based on the output of (1), and outer diameter abnormality detection when the output of the outer diameter fluctuation detection means (1) exceeds a predetermined value. An abnormal variation detecting means (3) for outputting a signal, an abnormal frequency detecting means (4) for outputting a frequency abnormality detection signal when the output of the varying frequency detecting means (2) is out of a predetermined range, and the outer diameter A hump-shaped defect detecting device for a cable surface, comprising: a logical product circuit (5) for outputting a defect detection signal when an abnormality detection signal and a frequency abnormality detection signal are simultaneously output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14554395A JPH08315651A (en) | 1995-05-19 | 1995-05-19 | Bump-shaped defect detecting device on cable surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14554395A JPH08315651A (en) | 1995-05-19 | 1995-05-19 | Bump-shaped defect detecting device on cable surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08315651A true JPH08315651A (en) | 1996-11-29 |
Family
ID=15387619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14554395A Pending JPH08315651A (en) | 1995-05-19 | 1995-05-19 | Bump-shaped defect detecting device on cable surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08315651A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591900A (en) * | 2012-08-13 | 2014-02-19 | 住友电气工业株式会社 | Detection method for external diameter abnormity of coating wire |
| JP2014150663A (en) * | 2013-02-01 | 2014-08-21 | Sumitomo Wiring Syst Ltd | Lump cutting device of covered conductor, device of manufacturing covered conductor, method of cutting lump of covered conductor, and method of manufacturing covered conductor |
| CN107389016A (en) * | 2017-07-25 | 2017-11-24 | 富通光纤光缆（成都）有限公司 | A kind of cable surface automatic testing method and system |
| CN115219418A (en) * | 2022-09-20 | 2022-10-21 | 湖北尚德金力电线电缆有限公司 | Cable protrusion damage detection device |
-
1995
- 1995-05-19 JP JP14554395A patent/JPH08315651A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591900A (en) * | 2012-08-13 | 2014-02-19 | 住友电气工业株式会社 | Detection method for external diameter abnormity of coating wire |
| JP2014150663A (en) * | 2013-02-01 | 2014-08-21 | Sumitomo Wiring Syst Ltd | Lump cutting device of covered conductor, device of manufacturing covered conductor, method of cutting lump of covered conductor, and method of manufacturing covered conductor |
| CN107389016A (en) * | 2017-07-25 | 2017-11-24 | 富通光纤光缆（成都）有限公司 | A kind of cable surface automatic testing method and system |
| CN115219418A (en) * | 2022-09-20 | 2022-10-21 | 湖北尚德金力电线电缆有限公司 | Cable protrusion damage detection device |
| CN115219418B (en) * | 2022-09-20 | 2022-12-30 | 湖北尚德金力电线电缆有限公司 | Cable protrusion damage detection device |
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