JPH0773006B2 - Surface defect detector for finned cable - Google Patents
Surface defect detector for finned cableInfo
- Publication number
- JPH0773006B2 JPH0773006B2 JP1013642A JP1364289A JPH0773006B2 JP H0773006 B2 JPH0773006 B2 JP H0773006B2 JP 1013642 A JP1013642 A JP 1013642A JP 1364289 A JP1364289 A JP 1364289A JP H0773006 B2 JPH0773006 B2 JP H0773006B2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- coating layer
- fin
- surface defect
- detection
- 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.)
- Expired - Fee Related
Links
Landscapes
- Manufacturing Of Electric Cables (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は着雪防止用ヒレ付きケーブルの表面欠陥検出
装置に関する。The present invention relates to a surface defect detecting device for a cable with fins for preventing snow accretion.
［従来の技術］ ケーブル被覆層押出工程での被覆層の凹凸、被覆層の欠
陥、規定外径からの逸脱等の品質管理は、１軸方向、２
軸方向あるいは多軸方向から例えば接触針を摺動させ、
ケーブル被覆層の半径方向の変位を検出する接触方式に
より、あるいはケーブル被覆層からの反射光の散乱の程
度からケーブル被覆層の凹凸を、そしてリニアアレイ・
センサにより透過光、反射光の幅を検出する非接触方式
にて行われている。ところが、普及が目覚ましい着雪防
止用ヒレ付きケーブル等は断面形状が真円でないため、
この種の変位、幅検出器によっては十分な品質管理が行
えないという問題が生じている。[Prior Art] Quality control such as unevenness of the coating layer in the cable coating layer extrusion step, defects of the coating layer, deviation from the specified outer diameter, etc.
For example, by sliding a contact needle from the axial direction or the multi-axis direction,
By the contact method that detects the displacement of the cable coating layer in the radial direction, or by the degree of scattering of the reflected light from the cable coating layer, the unevenness of the cable coating layer, and the linear array
A non-contact method is used in which the width of transmitted light and reflected light is detected by a sensor. However, the cross-sectional shape of snow-preventing fin-filled cables, etc.
There is a problem that sufficient quality control cannot be performed depending on this kind of displacement and width detector.
第２図（ａ），（ｂ），（ｃ）は、それぞれ標準検出位
置、ならびに２通りの異常検出位置にての従来の表面欠
陥検出動作を説明する図であって、第２図（ａ）に図示
するように、予めケーブル被覆層のヒレ形状部22,22′
を避けたｘ軸およびｙ軸の２軸方向の、一定の距離に２
対の変位検出器（図示しない）が固定配置され、その点
を基準とする変位から被覆層上の凹凸、被覆層の欠損、
規定外径から逸脱等が検出されている。ところが、この
ような欠陥検出方法では、心線導体に撚りぐせ、うねり
等によりケーブルが回転し、第２図（ｂ）に図示するよ
うにヒレ形状部22,22′がｘ軸上に配置された変位検出
器と対向すると、また第２図（ｃ）に図示するようにヒ
レ形状部22,22′がｙ軸上に配置された変位検出器と対
向すると、それぞれの変位検出器はケーブル被覆層の円
筒面の凹凸、被覆層の欠損、規定外径からの逸脱等を検
出し得ないばかりか、ヒレ形状部22,22′を被覆層上の
凸部として誤検出する欠点を有している。2 (a), (b), and (c) are diagrams for explaining a conventional surface defect detection operation at a standard detection position and two types of abnormality detection positions, respectively. ), The fin-shaped portions 22, 22 'of the cable covering layer are previously formed.
2 at a fixed distance in the x-axis and y-axis directions avoiding
A pair of displacement detectors (not shown) are fixedly arranged, and from the displacement based on that point, unevenness on the coating layer, loss of the coating layer,
Deviations from the specified outer diameter have been detected. However, in such a defect detecting method, the cable is rotated by twisting the core conductor, undulations, etc., and the fin-shaped portions 22, 22 'are arranged on the x-axis as shown in FIG. 2 (b). When facing the displacement detectors, and as shown in FIG. 2 (c), the fin-shaped portions 22 and 22 'face the displacement detectors arranged on the y-axis, each displacement detector is covered by a cable. In addition to being unable to detect irregularities on the cylindrical surface of the layer, defects in the coating layer, deviation from the specified outer diameter, etc., it has the drawback that the fin-shaped portions 22, 22 'are erroneously detected as convex portions on the coating layer. There is.
［発明が解決しようとする課題］ この発明は上述した点に鑑みてなされたものであって、
被検出対象のヒレ形状部の回転変位に対応して検出部の
位置が変更される表面欠陥検出器を提供することにあ
る。[Problems to be Solved by the Invention] The present invention has been made in view of the above points,
It is an object of the present invention to provide a surface defect detector in which the position of the detection unit is changed according to the rotational displacement of the fin-shaped portion to be detected.
［問題点を解決するための手段および作用］ この発明は、ケーブル被覆層のヒレ形状部に当接し、ケ
ーブル被覆層の円周方向の回転を伝達する段部を有する
一対のガイドローラと、ケーブル被覆層の円筒面の欠陥
を検出する複数の検出器とからなり、前記ガイドローラ
の回転変位に基づいて複数の検出器の位置を常にヒレ形
状部間に対向するように変更させ、ケーブル被覆層の表
面欠陥を確実に検出するように構成した。上記構成はケ
ーブル被覆層の円筒面と各検出器の相対位置を常に一定
にするよう作用する。[Means and Actions for Solving Problems] The present invention relates to a pair of guide rollers having a step portion that abuts on a fin-shaped portion of a cable coating layer and transmits circumferential rotation of the cable coating layer, and a cable. The coating layer comprises a plurality of detectors for detecting defects on the cylindrical surface of the coating layer, and the positions of the plurality of detectors are changed so as to always face between the fin-shaped portions based on the rotational displacement of the guide roller. It is configured to reliably detect the surface defects of the. The above-mentioned structure operates so that the relative position between the cylindrical surface of the cable coating layer and each detector is always constant.
［実施例］ 第１図（ａ）および（ｂ）は、それぞれこの発明の一実
施例の回転変位検出部の構成図および表面欠陥検出部の
構成図である。[Embodiment] FIGS. 1 (a) and 1 (b) are a structural view of a rotational displacement detecting portion and a surface defect detecting portion of an embodiment of the present invention, respectively.
第１図（ａ）において、円板形状の検出板１の中央には
ヒレ付きケーブルを挿通する所定形状、寸法の孔が穿た
れ、それより被覆層押出工程を経たケーブル２が図面垂
直方向に引き出されている。そして、そのケーブル２と
係合するべく、被覆層の円筒面３に当接する半円筒形状
部７およびケーブル被覆層のヒレ形状部4,5と当接する
段部８からなる断面形状を有するガイドローラ6,6′が
軸10,10′に軸支されている。また、軸10,10′はバネ1
1,11′により相互に係合され、ガイドローラ6,6′の段
部８がケーブルのヒレ形状部4,5に係合し、ヒレ形状部
4,5から逸脱しないよう適宜の圧力にてケーブルを挟持
している。これによりケーブル２の心線導体の撚りぐ
せ、うねり等ん起因するヒレ形状部4,5の円周方向の回
転を確実に検出板１に伝達し、さらに角度検出装置９に
伝達する。In FIG. 1 (a), a hole having a predetermined shape and size for inserting a cable with fins is formed in the center of a disc-shaped detection plate 1, and a cable 2 which has been subjected to a coating layer extrusion step is formed in a direction perpendicular to the drawing. Has been pulled out. A guide roller having a cross-sectional shape including a semi-cylindrical portion 7 that abuts the cylindrical surface 3 of the coating layer and a step portion 8 that abuts the fin-shaped portions 4 and 5 of the cable coating layer so as to engage with the cable 2. 6,6 'are pivotally supported on the shafts 10,10'. Also, the shafts 10 and 10 'are springs 1
1, 11 'are engaged with each other, and the stepped portions 8 of the guide rollers 6, 6'engage with the fin-shaped portions 4 and 5 of the cable.
The cable is clamped with appropriate pressure so as not to deviate from 4,5. As a result, the circumferential rotation of the fin-shaped portions 4 and 5 caused by the twisting of the core conductor of the cable 2, undulation, etc. is reliably transmitted to the detection plate 1 and further transmitted to the angle detection device 9.
このように構成される回転変位検出部は、被覆層押出工
程を経たケーブル２が図面垂直方向に引き出されると
き、ガイドローラ6,6′が軸10,10′を中心に回転するた
めケーブルに与える負荷が少ないと共に、２つのガイド
ローラにより２方向から挟持するためケーブルを偏心さ
せる虞がなく、また被覆層押出工程を阻害することがな
いという利点も備えている。The rotational displacement detecting portion configured as described above applies to the cable 2 because the guide rollers 6 and 6 ′ rotate about the shafts 10 and 10 ′ when the cable 2 that has undergone the coating layer extrusion process is pulled out in the vertical direction in the drawing. Since the load is small and the guide rollers sandwich the cable from two directions, there is no fear of eccentricity of the cable, and the coating layer extrusion step is not hindered.
続いて、第１図（ｂ）を参照して表面欠陥検出部の構造
を説明する。Next, the structure of the surface defect detecting portion will be described with reference to FIG.
前記検出板１の近傍に設置され、前記角度検出装置９に
より制御されるモーター（図示しない）を備える表面欠
陥検出部には、第１図（ｂ）に実線にて図示するように
ケーブル２のヒレ形状部4,5を検出しない位置に、任意
方式の２対の検出器12,13および14,15が設置されてい
る。The surface defect detection unit, which is installed near the detection plate 1 and includes a motor (not shown) controlled by the angle detection device 9, has a cable 2 as shown by a solid line in FIG. 1B. Two pairs of arbitrary detectors 12, 13 and 14, 15 are installed at positions where the fin-shaped portions 4 and 5 are not detected.
そして、心線導体の撚りぐせ、うねり等によりケーブル
が回転し、第１図（ｂ）の破線にて図示するようにケー
ブルのヒレ形状部4,5が４′,5′に移動し、検出器14,15
がそれヒレ形状部４′,5′を検出するような位置関係に
なると、このケーブルの回転は前記した回転変位検出部
によって直ちに検出され、図示しないモーターが駆動さ
れ、ケーブルの変位と同方向、同変位量の変位角を与え
るまで表面欠陥検出部が微小時間内に正確に回転され
る。これにより、検出器12〜15の位置は第１図（ｂ）に
破線にて示すように、再びヒレ形状部４′,5′を避ける
ように12′〜15′の位置に回転され、当初の角度よりケ
ーブル被覆層に対向し正確に検出される。Then, the cable is rotated by twisting, waviness, etc. of the core conductor, and the fin-shaped portions 4,5 of the cable are moved to 4 ', 5'as shown by the broken line in FIG. Bowl 14,15
When the fin-shaped portions 4 ', 5'become in a positional relationship with each other, the rotation of the cable is immediately detected by the rotational displacement detection unit described above, a motor (not shown) is driven, and in the same direction as the cable displacement, The surface defect detection unit is accurately rotated within a minute time until a displacement angle of the same displacement amount is given. As a result, the positions of the detectors 12 to 15 are rotated to the positions of 12 'to 15' so as to avoid the fin-shaped portions 4'and 5'again, as shown by the broken line in FIG. From the angle of, it faces the cable coating layer and is accurately detected.
さて、このようにして検出される検出器出力はケーブル
中心の変動成分とケーブル表面欠陥成分の和である。そ
こで、対の検出器12,13の検出出力をそれぞれL12，
L13、そのケーブル表面欠陥成分をそれぞれΔL12，ΔL
13、さらにケーブル中心の変動成分をΔＣとすると、 L12＝ΔＣ＋ΔL12 L13＝−ΔＣ＋ΔL13 である。したがって、ケーブルの外径変動ΔＤは対の検
出器12,13の検出出力L12，L13の和より、 ΔＤ＝L12＋L13 ＝ΔL12＋ΔL13 と求められる。これによりケーブルの被覆層の外径が求
められ、その値が甚だしき時には被覆層の欠損として検
出される。The detector output thus detected is the sum of the fluctuation component at the cable center and the cable surface defect component. Therefore, the detection outputs of the pair of detectors 12 and 13 are L 12 and
L 13 and its cable surface defect components are ΔL 12 and ΔL respectively
13 and when the fluctuation component at the cable center is ΔC, L 12 = ΔC + ΔL 12 L 13 = −ΔC + ΔL 13 . Therefore, the outer diameter variation ΔD of the cable can be calculated as ΔD = L 12 + L 13 = ΔL 12 + ΔL 13 from the sum of the detection outputs L 12 and L 13 of the pair of detectors 12 and 13 . By this, the outer diameter of the coating layer of the cable is obtained, and the value is detected as a defect of the coating layer when it is extremely large.
一方、対の検出器12,13の検出出力L12，L13の差の1/2の
信号Ｃすなわち、 Ｃ＝（L12−L13）/2 ＝（ΔL12−ΔL13）/2＋ΔＣ のΔL12−ΔL13は表面欠陥に基づく成分であって、その
時定数はケーブル中心の変動成分ΔＣの時定数に比例し
て短いと考えられる。そこで、このＣを所定の時定数開
路を通してCavとすることにより、 Cav≒ΔＣ からケーブル中心の変動成分が得られる。こうして、ケ
ーブル中心変動が得られると、L12およびL13とCavとの
下記の演算により、 ΔL12＝L12−ΔＣ＝L12−Cav ΔL13＝L13＋ΔＣ＝L13＋Cav 正味の表面欠陥成分ΔL12，ΔL13が得られ、この値の弁
別により、被覆層表面の凹凸の程度が検出される。On the other hand, a signal C that is 1/2 the difference between the detection outputs L 12 and L 13 of the pair of detectors 12 and 13 , that is, C = (L 12 −L 13 ) / 2 = (ΔL 12 −ΔL 13 ) / 2 + ΔC ΔL 12 −ΔL 13 is a component based on surface defects, and its time constant is considered to be short in proportion to the time constant of the fluctuation component ΔC at the cable center. Therefore, by setting C to C av through a predetermined time constant open circuit, the fluctuation component at the cable center can be obtained from C av ≈ΔC. In this way, when the cable center variation is obtained, the following calculation of L 12 and L 13 and C av is carried out: ΔL 12 = L 12 −ΔC = L 12 −C av ΔL 13 = L 13 + ΔC = L 13 + C av Net The surface defect components ΔL 12 and ΔL 13 are obtained, and the degree of unevenness on the coating layer surface is detected by discriminating these values.
以上、検出板の回転変位を検出し、これによりモーター
を駆動し、検出部本体を追従回転させる実施例につき説
明したが、検出部本体の重量を軽く、そしてケーブル被
覆層押出工程の負荷を軽く構成できる場合には、検出板
１に変位検出器を載架させることにより、さらに構成を
簡素化することが可能である。また、この発明は検出対
象がケーブルに限定されるものではなく、複雑な形状を
有する線状体一般の表面欠陥検出に供することが可能で
ある。The above has described the embodiment in which the rotational displacement of the detection plate is detected, and the motor is driven thereby to follow the rotation of the detection unit main body, but the weight of the detection unit main body is reduced and the load of the cable coating layer extrusion process is reduced. If it can be configured, the configuration can be further simplified by mounting the displacement detector on the detection plate 1. In addition, the present invention is not limited to the cable to be detected, and can be applied to the detection of surface defects of a general linear body having a complicated shape.
［発明の効果］ 以上述べたようにこの発明によれば、 （１）ヒレ付けケーブルのヒレ形状部を段部を有する一
対のガイドローラによりケーブルを誘導するため、ヒレ
形状部を確実に検出することができるとともに、ケーブ
ルへの負荷が少なくすることができる。EFFECTS OF THE INVENTION As described above, according to the present invention, (1) the fin-shaped portion of the fin-attached cable is guided by the pair of guide rollers having the step portion, so that the fin-shaped portion is reliably detected. In addition, the load on the cable can be reduced.
（２）ガイドローラの断面形状を変更するのみで多様な
ケーブルに対応することが可能である。(2) It is possible to support various cables simply by changing the cross-sectional shape of the guide roller.
（３）ヒレ形状部検出による誤検出の虞がなく、高精度
の品質管理が可能である。(3) There is no risk of erroneous detection due to the fin-shaped portion detection, and high-precision quality control is possible.
という顕著な効果を奏するヒレ付きケーブルの表面欠陥
検出装置を提供することができる。It is possible to provide a surface defect detection device for a cable with fins, which has the remarkable effect.
第１図（ａ），（ｂ）は、それぞれこの発明の一実施例
の回転変位検出部の構成図および欠陥検出部の構成図、 第２図（ａ），（ｂ），（ｃ）は、それぞれ標準検出位
置、ならびに２通りの異常検出位置にての従来の表面欠
陥検出動作を説明する図である。 １…検出板 ２…ヒレ付きケーブル ３…ケーブル被覆層 4,5…ヒレ形状部 6,6′…ガイドローラ ９…角度検出器 10,10′…軸 11,11′…バネ 12〜15…検出器1 (a) and 1 (b) are configuration diagrams of a rotational displacement detection unit and a defect detection unit according to an embodiment of the present invention, and FIGS. 2 (a), (b) and (c) are 3A and 3B are diagrams illustrating a conventional surface defect detection operation at a standard detection position and two types of abnormality detection positions, respectively. 1 ... Detecting plate 2 ... Cable with fin 3 ... Cable coating layer 4,5 ... Fin shape part 6,6 '... Guide roller 9 ... Angle detector 10,10' ... Shaft 11, 11 '... Spring 12-15 ... Detection vessel
───────────────────────────────────────────────────── フロントページの続き (72)発明者 原田 真昭 茨城県日立市日高町５丁目１番１号 日立 電線株式会社日高工場内 (72)発明者 田所 一夫 茨城県日立市日高町５丁目１番１号 日立 電線株式会社日高工場内 (72)発明者 滝川 勝信 東京都八王子市子安町２丁目３番８号 タ キカワエンジニアリング株式会社内 (56)参考文献 特開 昭54−5764（ＪＰ，Ａ) 実開 昭62−160418（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaaki Harada 5-1-1 Hidakacho, Hitachi City, Ibaraki Prefecture Hidaka Plant, Hitachi Cable, Ltd. (72) Inventor Kazuo Tadokoro, Hidaka Town, Hitachi City, Ibaraki Prefecture 5-1-1, Hitachi Cable Co., Ltd., Hidaka Plant (72) Inventor, Katsunobu Takigawa 2-3-8, Koyasu-cho, Hachioji, Tokyo Takikawa Engineering Co., Ltd. (56) Reference Japanese Patent Laid-Open No. 54- 5764 (JP, A) Actually opened 62-160418 (JP, U)
Claims (1)
ーブル被覆層の円周方向の回転を伝達する段部を有する
一対のガイドローラと、ケーブル被覆層の円筒面の欠陥
を検出する複数の検出器とからなり、前記ガイドローラ
の回転変位に基づいて複数の検出器の位置を常にヒレ形
状部間に対向するように変更させ、ケーブル被覆層の表
面欠陥を確実に検出するように構成したことを特徴とす
るヒレ付きケーブルの表面欠陥検出装置。1. A pair of guide rollers having a step portion that abuts on a fin-shaped portion of the cable coating layer and transmits rotation of the cable coating layer in a circumferential direction, and a plurality of guide rollers for detecting a defect on a cylindrical surface of the cable coating layer. And the position of the plurality of detectors is changed so as to always face between the fin-shaped portions on the basis of the rotational displacement of the guide roller, and the surface defect of the cable coating layer is reliably detected. A device for detecting surface defects in a cable with fins, which is characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1013642A JPH0773006B2 (en) | 1989-01-23 | 1989-01-23 | Surface defect detector for finned cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1013642A JPH0773006B2 (en) | 1989-01-23 | 1989-01-23 | Surface defect detector for finned cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02195609A JPH02195609A (en) | 1990-08-02 |
| JPH0773006B2 true JPH0773006B2 (en) | 1995-08-02 |
Family
ID=11838887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1013642A Expired - Fee Related JPH0773006B2 (en) | 1989-01-23 | 1989-01-23 | Surface defect detector for finned cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0773006B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2584347B2 (en) * | 1991-02-06 | 1997-02-26 | 三井造船株式会社 | On-board monitoring system for underwater cable and its device |
| CN108538500B (en) * | 2018-04-10 | 2019-12-03 | 扬州市旅游日用品制造总厂 | A kind of power cable manufacturing equipment for communication apparatus power supply |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS545764A (en) * | 1977-06-15 | 1979-01-17 | Showa Electric Wire & Cable Co | Device of detecting deformed condition of filament body |
| JPH0339861Y2 (en) * | 1986-03-31 | 1991-08-22 |
-
1989
- 1989-01-23 JP JP1013642A patent/JPH0773006B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02195609A (en) | 1990-08-02 |
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