JP2005003418A - Rod appearance detection method and its device - Google Patents

Rod appearance detection method and its device Download PDF

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Publication number
JP2005003418A
JP2005003418A JP2003164929A JP2003164929A JP2005003418A JP 2005003418 A JP2005003418 A JP 2005003418A JP 2003164929 A JP2003164929 A JP 2003164929A JP 2003164929 A JP2003164929 A JP 2003164929A JP 2005003418 A JP2005003418 A JP 2005003418A
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Japan
Prior art keywords
appearance
detection
optical
striatum
detection means
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JP2003164929A
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Japanese (ja)
Inventor
Satoshi Adachi
悟司 足立
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Priority to JP2003164929A priority Critical patent/JP2005003418A/en
Publication of JP2005003418A publication Critical patent/JP2005003418A/en
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  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rod appearance detection method and its device for accurately detecting an outer surface flaw and a joint part of the rod not by using manpower but by using an optical detector having at least four optical axes to detect the appearance of the rod. <P>SOLUTION: In this appearance detection device, a block-shaped optical detection means 3 is installed on a travel line X-X of the rod 1, the detection means 3 equipped with an octagonal through hole 2 having four or more optical axes P crossing the travel line as shown in the figure. This detection means 3 comprises a combination of a plurality of pairs (four pairs in this embodiment) of unevenness detectors with each pair equipped with a light projector 3a and a light receiver 3b. A controller 5 is connected to the detection means 3 on the light receiver 3b side as shown in Fig. 2, and not shown here, with the controller 5 equipped with a determination means 4 for determining the joint part Z and the flaw Q of the rod 1 based on individually detected detection signals. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、ホース製造時等に使用される断面円形状のマンドレル(芯体)等の線条体の外観検出方法及びその装置に係わり、更に詳しくは線条体の表面傷や接合部を人手を介することなく自動的に検出することを可能とした線条体の外観検出方法及びその装置に関するものである。
【0002】
【従来の技術】
従来、ホースの製造時には、芯体として断面円形状の樹脂やゴム等のマンドレルが使用されており、このような樹脂マンドレルやゴムマンドレル等は、ホース製造後に繋ぎ合わせて再利用することが行われている。しかし、ホースの製造時に外表面に傷が付いているマンドレルを使用すると、ホースの製造後にホース内面傷となって残り、ホースの製品不良を起こすと言う問題があった。
【0003】
上記のような製品不良を防止するため、予めマンドレルの外観検査を行い、外表面の修正や傷の除去を行っている。従来のマンドレルの外観検査は、目視、触感等、人手による方法が主流であったが、近年、レーザー等の光学系の凹凸検知器が提案され、傷検知に有効な機器となっていた(例えば、特許文献1参照)。
【0004】
【特許文献1】
特開平10−142164号公報(第1〜第3頁、図1)
【0005】
【発明が解決しようとする課題】
然しながら、レーザー等の光学系の凹凸検知器は、特に樹脂マンドレルを使用した場合、樹脂マンドレル特有の溶着による接合部の許容出来る微細なズレを誤検知すると言う問題があり、正確な外観検査を行うことが出来ないと言う問題があった。
【0006】
この発明はかかる従来の問題点に着目し、少なくとも4軸以上の光軸を持った光学的検出器で線条体の外観を検出することで、人手を介することなく線条体の外表面傷や接合部を精度良く検出する線条体の外観検出方法及びその装置を提供することを目的とするものである。
【0007】
【課題を解決するための手段】
この発明は上記目的を達成するため、この発明の線条体の外観検出方法は、走行ライン上を走行する線条体の外周面に、線条体の走行ライン上の2ヶ所に設けた光学的検出手段から線条体の走行ラインと交差する複数の測定光をそれぞれ照射し、前記測定光の受光側から出力される複数の検出信号を制御装置に入力し、この検出信号のうち、1方向からの検出信号のみが正常の時、前記制御装置により線条体の接合部であると判断し、該接合部を正常と判定することを要旨とするものである。
【0008】
前記線条体の外観検出を、少なくとも4軸以上の光軸を持った凹凸検知器から成る光学的検出手段を使用して行うものである。
【0009】
このように、線条体の走行ライン上の2ヶ所に設けた光学的検出手段から少なくとも4軸以上の光軸を持った光学的検出手段で線条体の外観を検出することで、人手を介することなく線条体の外表面傷や接合部を精度良く検出することが出来る。
【0010】
また、この発明の線条体の外観検出装置は、線条体の走行ライン上に、走行ラインと交差する4軸以上の光軸を備えた光学的検出手段を少なくとも2ヶ所に設置し、この光学的検出手段の各受光器側に、個別に検出した検出信号に基づいて前記線条体の接合部を判定する判定手段を備えた制御装置を接続したことを要旨とするものである。
【0011】
前記光学的検出手段は、4軸以上の光軸を持った凹凸検知器から成る光学的検出手段を配設し、前記判定手段に、複数の検出信号を比較して線条体の接合部であると判定する演算回路を設けたものである。
【0012】
このような線条体の外観検出装置を使用することで、人手を頼ることなく検査の多台持ちが出来、複数の検知器を使用することで検査精度を向上させることが出来る。更に、検出信号の設定値を変えることで、ホースの用途にあった傷レベルの選択が可能である。
【0013】
【発明の実施の形態】
以下、添付図面に基づき、この発明の実施形態を説明する。
【0014】
図1は、この発明の線条体の外観検出方法を実施するための外観検出装置の概略構成図を示し、この発明の実施形態では、線条体1として、ホース製造時に使用される断面円形状の樹脂マンドレル(芯体)を示している。
【0015】
前記外観検出装置は、図1に示すように、線条体1の走行ラインX−X上に、走行ラインと交差する4軸以上の光軸Pを備えた八角形の貫通穴2を備えたブロック状の光学的検出手段3が設置してある。
【0016】
この光学的検出手段3は、投光器3aと受光器3bとを備えた一対の凹凸検知器を複数台(この実施形態では4台)組合せて構成され、この各受光器3b側には、個別に検出した検出信号に基づいて図2に示すように、前記線条体1の接合部Zや傷Qを判定する判定手段4を備えた1台の制御装置5が接続されている。
【0017】
なお、この実施形態では、光学的検出手段3として4台の凹凸検知器を設置してあるが、装置が複雑にならない範囲で増加することも可能である。
【0018】
またこの発明の外観検出装置では、図2に示すように前記線条体1の走行ラインX−X上の2ヶ所に光学的検出手段3が設置してある。前記制御装置5が接続された1台の判定手段4には、前記走行ラインX−X上の2ヶ所に設置された光学的検出手段3から出力された複数の検出信号を比較演算して、線条体1の接合部Zであると判定する図示しない演算回路が設けてある。
【0019】
次に、線条体1の外観検出方法について説明する。
【0020】
まず線条体1の走行ラインX−Xに線条体1を連続的に走行させ、この線条体1の走行時に光学的検出手段3の八角形の貫通穴2を挿通させる。そして、線条体1が2ヶ所に設置した光学的検出手段3の貫通穴2を挿通する時、前記走行ラインX−Xと交差する少なくとも4軸以上の測定光Pを線条体1の外周面に照射させる。
【0021】
そして2ヶ所に設置した光学的検出手段3のうち、一方を接合部や傷がある線条体1が通過した時の受光器3bから出力される検出信号と、他方を接合部や傷がない線条体1が通過した時の検出信号の出力値の差を演算し、出力値の差がない時、或いは許容設定値以内であれば正常であると判定し、出力値に差があり、許容設定値を超えれば異常であると判定する。
【0022】
前記測定光Pの受光器3b側から出力される複数の検出信号を判定手段4を介して1台の制御装置5に入力し、この検出信号のうち、1方向からの検出信号のみが正常の時、前記制御装置5の図示しない演算回路で演算し、線条体1の接合部Zであると判断し、該接合部を正常と判定する。
【0023】
即ち、演算回路による判定は、下記の表1に示すように、凹凸検知器から成る光学的検出手段3の測定光Pの1軸のみが正常(通過)の時、線条体1の接合部Zであると判断し、該接合部を正常と判定する。
【0024】
また、光学的検出手段3の測定光Pの3軸が正常(通過)で、1軸が異常(検出)を検出した時には、線条体1の外周面に傷Qがあると判断し、該測定部を傷Qと判定する。また、光学的検出手段3の測定光Pの全てが正常(通過)である時、線条体1の外周面には傷Qがなく、良品と判定する。
【0025】
これらの判定は、上述したように線条体1が2ヶ所に設置した光学的検出手段3から出力される複数の検出信号を判定手段4を介して1台の制御装置5に入力し、制御装置5の演算回路で演算することで判定するものである。
【0026】
【表1】

Figure 2005003418
【0027】
【発明の効果】
この発明は、上記のように走行ライン上を走行する線条体の外周面に、線条体の走行ライン上の2ヶ所に設けた光学的検出手段から線条体の走行ラインと交差する複数の測定光をそれぞれ照射し、前記測定光の受光側から出力される複数の検出信号を制御装置に入力し、この検出信号のうち、1方向からの検出信号のみが正常の時、前記制御装置により線条体の接合部であると判断し、該接合部を正常と判定するので、人手を介することなく線条体の外表面傷や接合部を精度良く検出することが出来る効果がある。
【0028】
また、線条体の走行ライン上に、走行ラインと交差する4軸以上の光軸を備えた光学的検出手段を2ヶ所に設置し、この光学的検出手段の各受光器側に、個別に検出した検出信号に基づいて前記線条体の接合部を判定する判定手段を備えた制御装置を接続したので、人手を頼ることなく検査の多台持ちが出来、複数の検知器を使用することで検査精度を向上させることが出来、更に、検出信号の設定値を変えることで、ホースの用途にあった傷レベルの選択が可能である。
【図面の簡単な説明】
【図1】この発明の線条体の外観検出方法を実施するための外観検出装置の概略構成図である。
【図2】この発明の線条体の外観検出方法の説明図である。
【符号の説明】
1 線条体 2 貫通穴
3 光学的検出手段 3a 投光器
3b 受光器 4 判定手段
5 制御装置 Z 接合部
Q 傷 X−X 走行ライン[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and an apparatus for detecting the appearance of a filamentous body such as a mandrel (core body) having a circular cross section used when manufacturing a hose and the like. The present invention relates to a method and an apparatus for detecting the appearance of a striatum that can be automatically detected without passing through a wire.
[0002]
[Prior art]
Conventionally, at the time of manufacturing a hose, a mandrel such as a resin or rubber having a circular cross section is used as a core, and such a resin mandrel, a rubber mandrel, or the like is connected and reused after the hose is manufactured. ing. However, if a mandrel having a scratch on the outer surface is used during the manufacture of the hose, there is a problem in that the hose is damaged on the inner surface after the hose is manufactured, resulting in a defective product of the hose.
[0003]
In order to prevent such product defects as described above, the appearance inspection of the mandrel is performed in advance to correct the outer surface and remove the scratches. Conventional methods for visual inspection of mandrels have been mainly manual methods such as visual and tactile sensations, but in recent years, optical irregularities detectors such as lasers have been proposed and have become effective devices for scratch detection (for example, , See Patent Document 1).
[0004]
[Patent Document 1]
JP-A-10-142164 (first to third pages, FIG. 1)
[0005]
[Problems to be solved by the invention]
However, an optical irregularity detector such as a laser has a problem of erroneously detecting an allowable fine shift of a joint due to welding specific to a resin mandrel, particularly when a resin mandrel is used, and performs an accurate appearance inspection. There was a problem that I could not do it.
[0006]
The present invention pays attention to such conventional problems, and detects the outer surface of the striatum without any human intervention by detecting the appearance of the striatum with an optical detector having at least four optical axes. It is an object of the present invention to provide a method and an apparatus for detecting the appearance of a striate body that accurately detect a joint portion.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a method for detecting the appearance of a striate according to the present invention. A plurality of measurement lights intersecting with the travel line of the striatum are respectively emitted from the automatic detection means, and a plurality of detection signals output from the light receiving side of the measurement light are input to the control device. When only the detection signal from the direction is normal, it is determined that the control device determines that it is a joint portion of the striatum, and determines that the joint portion is normal.
[0008]
Appearance detection of the linear body is performed using an optical detection means including an unevenness detector having at least four optical axes.
[0009]
Thus, by detecting the appearance of the striatum with optical detection means having at least four optical axes from the optical detection means provided at two locations on the running line of the striatum, manpower is reduced. It is possible to accurately detect the outer surface scratches and joints of the striatum without intervention.
[0010]
In addition, the linear body appearance detecting device of the present invention is provided with at least two optical detection means having four or more optical axes intersecting the traveling line on the traveling line of the linear body. The gist of the invention is that a control device provided with a determining means for determining the joint portion of the filaments based on the individually detected detection signals is connected to each light receiver side of the optical detecting means.
[0011]
The optical detection means is provided with an optical detection means comprising an unevenness detector having four or more optical axes, and a plurality of detection signals are compared with the determination means at the joint portion of the filament. An arithmetic circuit for determining that there is a circuit is provided.
[0012]
By using such a linear body appearance detection device, it is possible to carry multiple inspections without relying on human hands, and by using a plurality of detectors, inspection accuracy can be improved. Furthermore, by changing the set value of the detection signal, it is possible to select a scratch level suitable for the use of the hose.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0014]
FIG. 1 shows a schematic configuration diagram of an appearance detecting device for carrying out the method of detecting the appearance of a striated body according to the present invention. In the embodiment of the present invention, a cross-sectional circle used at the time of manufacturing a hose is used as the striated body 1. A resin mandrel (core body) having a shape is shown.
[0015]
As shown in FIG. 1, the appearance detection device includes an octagonal through-hole 2 having four or more optical axes P intersecting the traveling line on the traveling line XX of the striate body 1. Block-shaped optical detection means 3 is provided.
[0016]
This optical detection means 3 is configured by combining a plurality of (four in this embodiment) a pair of uneven detectors having a projector 3a and a light receiver 3b, and each of the light receivers 3b is individually provided on the side of each light receiver 3b. As shown in FIG. 2 based on the detected signal, a single control device 5 including a determination unit 4 that determines the joint Z and the scratch Q of the linear body 1 is connected.
[0017]
In this embodiment, four unevenness detectors are installed as the optical detection means 3, but it can be increased within a range where the apparatus does not become complicated.
[0018]
Moreover, in the appearance detection apparatus of this invention, as shown in FIG. 2, the optical detection means 3 is installed in two places on the driving | running line XX of the said linear body 1. As shown in FIG. The single determination means 4 connected to the control device 5 performs a comparison operation of a plurality of detection signals output from the optical detection means 3 installed at two places on the travel line XX, An arithmetic circuit (not shown) that determines that the joint 1 is the joint 1 of the filament 1 is provided.
[0019]
Next, a method for detecting the appearance of the filament 1 will be described.
[0020]
First, the linear body 1 is continuously traveled along the travel line XX of the linear body 1, and the octagonal through hole 2 of the optical detection means 3 is inserted when the linear body 1 travels. Then, when the linear body 1 is inserted through the through hole 2 of the optical detection means 3 installed at two places, the measurement light P having at least four axes intersecting the travel line XX is transmitted to the outer periphery of the linear body 1. Irradiate the surface.
[0021]
And among the optical detection means 3 installed in two places, the detection signal output from the light receiver 3b when the linear body 1 having a joint or a flaw is passed, and the other has no joint or a flaw. The difference in the output value of the detection signal when the striate 1 passes is calculated, and when there is no difference in the output value or within the allowable set value, it is determined to be normal, and there is a difference in the output value. If the allowable set value is exceeded, it is determined that there is an abnormality.
[0022]
A plurality of detection signals output from the light receiver 3b side of the measurement light P are input to one control device 5 through the determination means 4, and only detection signals from one direction among these detection signals are normal. At this time, the calculation is performed by an arithmetic circuit (not shown) of the control device 5, and it is determined that the joint portion Z of the linear member 1 is present, and the joint portion is determined to be normal.
[0023]
In other words, as shown in Table 1 below, the determination by the arithmetic circuit is performed when the only one axis of the measurement light P of the optical detection means 3 composed of the unevenness detector is normal (passed). J is determined to be Z, and the joint is determined to be normal.
[0024]
Further, when the three axes of the measurement light P of the optical detection means 3 are normal (pass) and one axis detects an abnormality (detection), it is determined that there is a scratch Q on the outer peripheral surface of the filament 1, The measurement part is determined as a scratch Q. Further, when all of the measurement light P of the optical detection means 3 is normal (passed), it is determined that the outer peripheral surface of the filament 1 has no scratch Q and is a non-defective product.
[0025]
For these determinations, as described above, a plurality of detection signals output from the optical detection means 3 installed at two locations of the striatum 1 are input to one control device 5 via the determination means 4 and controlled. The determination is made by calculating with the calculation circuit of the device 5.
[0026]
[Table 1]
Figure 2005003418
[0027]
【The invention's effect】
In the present invention, a plurality of crossings intersecting with the travel line of the striatum from the optical detection means provided at two places on the travel line of the striatum on the outer peripheral surface of the striatum traveling on the travel line as described above. And when a plurality of detection signals output from the light receiving side of the measurement light are input to the control device, and only the detection signal from one direction is normal among the detection signals, the control device Therefore, it is determined that the joint is a joint of the striatum, and the joint is determined to be normal. Therefore, there is an effect that the outer surface flaw and the joint of the striatum can be accurately detected without manual intervention.
[0028]
In addition, optical detection means having four or more optical axes intersecting the travel line are installed at two places on the travel line of the striate body, and individually on each light receiver side of the optical detection means. Since the control device provided with the determination means for determining the joint portion of the striatum based on the detected detection signal is connected, it is possible to carry multiple inspections without relying on human hands and use a plurality of detectors. The inspection accuracy can be improved by changing the set value of the detection signal, and the scratch level suitable for the use of the hose can be selected.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an appearance detection apparatus for carrying out the method of detecting the appearance of a striatum according to the present invention.
FIG. 2 is an explanatory diagram of a method for detecting the appearance of a striatum according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Linear body 2 Through-hole 3 Optical detection means 3a Light projector 3b Light receiver 4 Judgment means 5 Control apparatus Z Junction part Q Scratch XX Traveling line

Claims (5)

走行ライン上を走行する線条体の外周面に、線条体の走行ライン上の2ヶ所に設けた光学的検出手段から線条体の走行ラインと交差する複数の測定光をそれぞれ照射し、前記測定光の受光側から出力される複数の検出信号を制御装置に入力し、この検出信号のうち、1方向からの検出信号のみが正常の時、前記制御装置により線条体の接合部であると判断し、該接合部を正常と判定する線条体の外観検出方法。Irradiate the outer peripheral surface of the striatum traveling on the travel line with a plurality of measurement lights that intersect the travel line of the striatum from the optical detection means provided at two locations on the travel line of the striatum, A plurality of detection signals output from the light receiving side of the measurement light are input to the control device, and when only the detection signals from one direction are normal among the detection signals, the control device causes the joints of the filaments A method for detecting the appearance of a striatum that is determined to be present and determines that the joint is normal. 前記線条体の外観検出を、少なくとも4軸以上の光軸を持った凹凸検知器から成る光学的検出手段を使用して行う請求項1に記載の線条体の外観検出方法。The method for detecting the appearance of a filamentous body according to claim 1, wherein the appearance detection of the linear body is performed using an optical detection means comprising an unevenness detector having at least four optical axes. 線条体の走行ライン上に、走行ラインと交差する4軸以上の光軸を備えた光学的検出手段を2ヶ所に設置し、この光学的検出手段の各受光器側に、個別に検出した検出信号に基づいて前記線条体の接合部を判定する判定手段を備えた制御装置を接続して成る線条体の外観検出装置。On the running line of the striatum, optical detection means having four or more optical axes intersecting with the running line are installed in two places, and the detection is individually performed on each light receiver side of the optical detection means. An apparatus for detecting the appearance of a linear body, which is formed by connecting a control device including a determination unit that determines a joint portion of the linear body based on a detection signal. 前記光学的検出手段は、4軸以上の光軸を持った凹凸検知器から成る光学的検出手段を配設した請求項3に記載の線条体の外観検出装置。4. A linear body appearance detecting device according to claim 3, wherein said optical detecting means is provided with optical detecting means comprising an unevenness detector having four or more optical axes. 前記判定手段に、複数の検出信号を比較して線条体の接合部であると判定する演算回路を設けた請求項3または4に記載の線条体の外観検出装置。The linear body appearance detection device according to claim 3 or 4, wherein the determination means is provided with an arithmetic circuit that compares a plurality of detection signals and determines that the detection portion is a joint portion of the linear body.
JP2003164929A 2003-06-10 2003-06-10 Rod appearance detection method and its device Pending JP2005003418A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007132812A (en) * 2005-11-10 2007-05-31 Japan Automat Mach Co Ltd Core wire inspection device of wire terminal part
JP2020067280A (en) * 2018-10-22 2020-04-30 三菱電機株式会社 Defect inspection device for spirally covered winding wire, spirally covered winding wire production system with defect inspection device, and defect inspection method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007132812A (en) * 2005-11-10 2007-05-31 Japan Automat Mach Co Ltd Core wire inspection device of wire terminal part
JP4699179B2 (en) * 2005-11-10 2011-06-08 日本オートマチックマシン株式会社 Wire inspection equipment for wire ends
CN1976149B (en) * 2005-11-10 2012-02-22 日本自动机械株式会社 Bare conductor detection device
JP2020067280A (en) * 2018-10-22 2020-04-30 三菱電機株式会社 Defect inspection device for spirally covered winding wire, spirally covered winding wire production system with defect inspection device, and defect inspection method

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