JP4369799B2 - Crimp condition inspection device for crimp terminals - Google Patents

Crimp condition inspection device for crimp terminals Download PDF

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JP4369799B2
JP4369799B2 JP2004158218A JP2004158218A JP4369799B2 JP 4369799 B2 JP4369799 B2 JP 4369799B2 JP 2004158218 A JP2004158218 A JP 2004158218A JP 2004158218 A JP2004158218 A JP 2004158218A JP 4369799 B2 JP4369799 B2 JP 4369799B2
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crimping
background
color
electric wire
terminal
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JP2005337926A (en
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秀樹 松本
利行 田中
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THE FURUKAW ELECTRIC CO., LTD.
Furukawa Automotive Systems Inc
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THE FURUKAW ELECTRIC CO., LTD.
Furukawa Automotive Systems Inc
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本発明は、被覆を剥離して導体を露出させた電線の端部に圧着により取り付けられた圧着端子の圧着状態を画像処理により検査する圧着端子の圧着状態査装置に関するものである。 The present invention relates to crimping state inspection apparatus of the crimp terminal for checking the crimp state of the crimp terminal which is attached by crimping to an end portion of the wire to expose the conductor is peeled off coating by image processing.

電線の端部に圧着端子を取り付ける場合には、図5に示すように、電線1の端部の被覆1bを剥離して所定長さの導体1aを露出させた後、その剥離端側の被覆1bと露出された導体1aの外周面に良導電性金属材料からなる圧着端子2の被覆バレル2bと導体バレル2aとを被せて外側から圧着して把持し、圧着部3を形成することにより行っている。この際、被覆端部(被覆1bの段剥ぎ端部)1cが被覆バレル2bの前側縁部から所定長さLだけ導体バレル2a側に飛び出て、被覆バレル2bの前側縁部と導体バレル2aの後側縁部との中間位置に位置するように、電線1の被覆1bが圧着端子2の被覆バレル2bで圧着されると、圧着端子2が電線1の端部に確実に把持され、電線1と圧着端子2との導通状態を良好に維持することができる。   When the crimp terminal is attached to the end of the electric wire, as shown in FIG. 5, the covering 1b at the end of the electric wire 1 is peeled to expose the conductor 1a of a predetermined length, and then the covering at the peeling end is provided. The outer peripheral surface of the exposed conductor 1a is covered with a covering barrel 2b and a conductor barrel 2a made of a highly conductive metal material, and is crimped and gripped from outside to form a crimped portion 3. ing. At this time, the covering end (stepped end portion of the covering 1b) 1c protrudes from the front edge of the covering barrel 2b to the conductor barrel 2a side by a predetermined length L, and the front edge of the covering barrel 2b and the conductor barrel 2a When the covering 1b of the electric wire 1 is crimped by the covering barrel 2b of the crimping terminal 2 so as to be positioned at an intermediate position with respect to the rear edge, the crimping terminal 2 is securely held by the end of the electric wire 1, and the electric wire 1 And the crimp terminal 2 can be maintained in a good conductive state.

ところが、電線1の被覆端部1cが圧着端子2の被覆バレル2bの前側縁部から所定長さLよりも大きく飛び出て、電線1の被覆1bが圧着端子2の導体バレル2aで圧着されたり(被覆かみ不良)、電線1の被覆端部1cが圧着端子2の被覆バレル2bよりも後方に引っ込んで、電線1の導体1aが圧着端子2の被覆バレル2bで圧着されたり(首吊り不良)等すると、圧着不良となって、圧着端子2が電線1の端部に確実に把持されず、電線1と圧着端子2との導通状態を良好に維持することが困難になる。   However, the covering end 1c of the electric wire 1 protrudes from the front edge of the covering barrel 2b of the crimping terminal 2 to be larger than the predetermined length L, and the covering 1b of the electric wire 1 is crimped by the conductor barrel 2a of the crimping terminal 2 ( If the covering end 1c of the electric wire 1 is retracted behind the covering barrel 2b of the crimp terminal 2 and the conductor 1a of the electric wire 1 is crimped by the covering barrel 2b of the crimp terminal 2 (defective neck hanging), etc. In this case, the crimping terminal 2 is not securely gripped by the end portion of the electric wire 1 and it is difficult to maintain a good conduction state between the electric wire 1 and the crimping terminal 2.

そこで、従来、電線1の端部に圧着された圧着端子2の圧着部3における電線1の被覆端部1c等の位置を画像処理により検出して、圧着端子2の圧着状態の良、不良を検査する方法が行われている。その検査方法は、電線1の端部に圧着端子2を圧着した後、その圧着端子2を90度電線1の軸線の回りに回転させて横向きにし、その横向きの圧着部3に主照明手段と副照明手段からそれぞれ白色光を投光し、その圧着部3を表側と裏側から照明して、その圧着部3をテレビカメラ、CCD等の撮像手段で撮像したとき、その撮像データのコントラストを大きくし、その撮像データを画像処理手段で画像処理して画素の輝度データから、電線1の被覆端部1cや圧着端子2の被覆バレル2b等の位置を検出することにより、圧着端子2の圧着部3における圧着状態の良、不良を検査するようにしたものである(特許文献1参照)。   Therefore, conventionally, the position of the coated end portion 1c of the electric wire 1 in the crimp portion 3 of the crimp terminal 2 crimped to the end portion of the electric wire 1 is detected by image processing, and the crimping state of the crimp terminal 2 is determined to be good or bad. There is a method to inspect. In the inspection method, after the crimp terminal 2 is crimped to the end of the electric wire 1, the crimp terminal 2 is rotated 90 degrees around the axis of the electric wire 1 to be turned sideways. When white light is projected from the sub-illumination means, the crimping portion 3 is illuminated from the front side and the back side, and the crimping portion 3 is imaged by an imaging means such as a TV camera or CCD, the contrast of the image data is increased. Then, the imaging data is image-processed by the image processing means, and the positions of the covering end 1c of the electric wire 1 and the covering barrel 2b of the crimping terminal 2 are detected from the luminance data of the pixel, thereby the crimping portion of the crimping terminal 2 No. 3 is inspected for good and bad crimped state (see Patent Document 1).

特開平5−272939号公報(発明の詳細な説明の項の段落番号0009乃至0011、0017乃至0020、図1、2、21)JP-A-5-272939 (paragraph numbers 0009 to 0011, 0017 to 0020 in FIGS. 1, 2, and 21 in the Detailed Description of the Invention)

従来の圧着端子2の画像処理による圧着状態検査方法は、主照明手段及び副照明手段からの照明により圧着端子2の圧着部3を照明し、圧着部3の撮像データのコントラストを大きくして検査の精度を上げようとする検査方法であるが、副照明手段からの照明の照度を調整することが容易でない。即ち、照度を押さえるとコントラスト効果が殆ど得られなくなるほか、照度を上げていくと、圧着部3全体が黒く浮かび上がって、圧着部3の輪郭が不明瞭になり、電線1の被覆端部1cの位置を正確に検出し難くなるからである。また、例えば、電線1の被覆1b及び背景体が白色かそれに近い色の場合には、圧着部3を主照明手段及び副照明手段により照明しても、圧着部3の撮像データのコントラストが所望するように大きくならず、電線1の被覆端部1cの位置を正確に検出することが困難で、圧着端子2の圧着部3における圧着状態を精度よく的確に検査することができないという問題がある。   In the conventional method for inspecting the crimping state by image processing of the crimping terminal 2, the crimping part 3 of the crimping terminal 2 is illuminated by illumination from the main illumination means and the sub-illumination means, and the contrast of the imaging data of the crimping part 3 is increased. However, it is not easy to adjust the illuminance of the illumination from the auxiliary illumination means. That is, when the illuminance is suppressed, the contrast effect can hardly be obtained, and when the illuminance is increased, the entire crimping part 3 appears black, the outline of the crimping part 3 becomes unclear, and the covering end 1c of the electric wire 1 becomes unclear. This is because it becomes difficult to accurately detect the position of. For example, when the covering 1b of the electric wire 1 and the background body are white or a color close thereto, the contrast of the imaging data of the crimping portion 3 is desired even if the crimping portion 3 is illuminated by the main illumination means and the sub-illumination means. However, it is difficult to accurately detect the position of the covering end portion 1c of the electric wire 1 and the crimping state of the crimping portion 3 of the crimping terminal 2 cannot be accurately and accurately inspected. .

本発明は上記に鑑み生まれたもので、電線の被覆色や背景体の背景色が種々変わっても、圧着端子の圧着部における撮像データの輪郭が明瞭でコントラストも大きくなり、圧着端子の圧着部における圧着状態を精度よく的確に検査することができる圧着端子の圧着状態査装置を提供することを目的とするものである。 The present invention was born in view of the above, and even if the coating color of the electric wire or the background color of the background body changes variously, the contour of the imaging data in the crimping part of the crimping terminal is clear and the contrast is increased, and the crimping part of the crimping terminal it is an object to provide a crimp state inspection apparatus of the crimp terminal to the crimping state can be accurately precisely inspected in.

本発明の請求項に記載された発明は、電線の端部に圧着により取り付けられた圧着端子の圧着状態を画像処理により検査する圧着端子の圧着状態検査装置において、前記圧着端子の圧着部における背景体の背景色を圧着部における電線の被覆色に応じてこれとは異なる背景色に切り替える背景色切り替え手段と、前記圧着部及び背景体を撮像する撮像手段と、その撮像データを画像処理して電線の被覆端部の位置を検出することにより圧着部の良、不良を検査する画像処理手段とを備え、前記背景色切り替え手段が、複数の異なる背景色の背景体片を配列させた背景体と、背景体に連結され、圧着部における電線の被覆
色に応じてその被覆色とは異なる背景色の背景体片を圧着部に対向する位置まで移動させて背景色を切り替える背景体駆動部とを有することを特徴とするものである。
The invention described in claim 1 of the present invention, in the crimping state inspection apparatus of the crimp terminal for checking the crimp state of the crimp terminal which is attached by crimping to an end portion of the wire by image processing, the crimping portion of the crimp terminal A background color switching means for switching the background color of the background body to a different background color depending on the color of the wire in the crimping section, an imaging means for imaging the crimping section and the background body, and image processing of the imaging data Image processing means for inspecting the goodness and badness of the crimping part by detecting the position of the covering end of the electric wire, and the background color switching means is a background in which background body pieces of different background colors are arranged A background body drive that is connected to the body and the background body and switches the background color by moving a background body piece of a background color different from the coating color according to the coating color of the wire in the crimping section to a position facing the crimping section. It is characterized in that it has a part.

本発明の請求項に記載された発明は、請求項記載の圧着端子の圧着状態検査装置において、前記圧着端子の圧着部に背景体の背景色とは異なる色相の圧着部照明光を照射する圧着部照明手段を備えることを特徴とするものである。 The invention described in claim 2 of the present invention, the irradiation in the crimping state inspecting device of the crimp terminal according to claim 1, the hue crimping portion illumination light different from the background color of the background material to the crimping portion of the crimp terminal It is characterized by comprising a crimping section illumination means.

本発明の請求項に記載された圧着端子の圧着状態査装置によると、前記圧着部における背景体の背景色を背景色切り替え手段により、圧着部における電線の被覆色に応じて、これとは異なる背景色に切り替えるようにしたので、圧着部における電線の被覆色と背景体の背景色との色相差が広がり、撮像手段で得られた圧着部及び背景体の撮像データのコントラストが大きくなる。また、背景体側から圧着部を照明しないので、圧着部の輪郭が不明瞭になることがない。その結果、その撮像データを画像処理手段で画像処理したとき、圧着部における電線の被覆端部の位置を容易に検出することが可能になり、圧着端子の圧着部における圧着状態の良、不良を精度よく的確に検査することができる。 According to the crimping state inspection apparatus of the crimp terminal according to claim 1 of the present invention, the background color switching means the background color of the background material in the crimped portion, in accordance with the coating color of the wire in the crimping portion, and this Since the background color is switched to a different background color, the hue difference between the covering color of the electric wire in the crimping portion and the background color of the background body widens, and the contrast between the imaging data of the crimping portion and the background body obtained by the imaging means increases. . Moreover, since the crimping | compression-bonding part is not illuminated from the background body side, the outline of a crimping | compression-bonding part does not become obscure. As a result, when the image data is image-processed by the image processing means, it becomes possible to easily detect the position of the coated end portion of the electric wire in the crimping portion, and the crimping state of the crimping portion of the crimping terminal is good or bad. Inspection can be performed accurately and accurately.

本発明の請求項に記載された圧着端子の圧着状態査装置によると、前記圧着端子の圧着部に背景体の背景色とは異なる色相の圧着部照明光を圧着部及び背景体を撮像する前に照射するので、圧着部における電線の被覆色の色相が圧着部照明光の色相側に偏向し、撮像手段で得られた圧着部及び背景体の撮像データのコントラストがより大きくなって、電線の被覆端部の位置の検出が更に容易になり、圧着部の圧着状態をより的確に検査することができる。 According to the crimping state inspection apparatus of the crimp terminal according to claim 2 of the present invention, the imaging crimp portion and background body color crimp portion illumination light different from the background color of the background material to the crimping portion of the crimp terminal Because the color of the wire covering color in the crimping part is deflected to the hue side of the crimping part illumination light, the contrast of the imaging data of the crimping part and the background obtained by the imaging means becomes larger. Detection of the position of the coated end portion of the electric wire is further facilitated, and the crimping state of the crimping portion can be more accurately inspected.

次に、本発明の実施形態を図面により詳細に説明する。図1は本発明に係る圧着端子の圧着状態検査方法及び検査装置の1実施形態を示す正面概要図、図2は図1の側面概要図である。なお、従来の技術に記載されたものと同一構成のものには、同一符号を付し、詳細説明を省略する。   Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front schematic view showing an embodiment of a crimped terminal crimping state inspection method and inspection apparatus according to the present invention, and FIG. 2 is a side schematic view of FIG. In addition, the same code | symbol is attached | subjected to the same structure as what was described in the prior art, and detailed description is abbreviate | omitted.

本実施形態の圧着端子の圧着状態検査装置は、図1、2に示すように、電線1の端部に圧着により取り付けられた圧着端子2の圧着部3に所定色相の圧着部照明光8を照射する圧着部照明手段8と、前記圧着部3の背景体9に圧着部照明光8とは異なる色相の背景体照明光10を照射する背景体照明手段5と、これら照明光8、10により照射された圧着部3及び背景体9を撮像する撮像手段6と、その撮像データを画像処理して電線1の被覆端部1cの位置を検出することにより圧着部3の良、不良を検査する画像処理手段7とを備える。   As shown in FIGS. 1 and 2, the crimping terminal inspection apparatus for a crimping terminal according to this embodiment applies a crimping portion illumination light 8 having a predetermined hue to the crimping portion 3 of the crimping terminal 2 attached to the end of the electric wire 1 by crimping. By the crimping part illumination means 8 for irradiating, the background body illumination means 5 for irradiating the background body 9 of the crimping part 3 with the background body illumination light 10 having a hue different from that of the crimping part illumination light 8, and these illumination lights 8, 10. The imaging means 6 that images the irradiated crimping part 3 and the background body 9 and the image data are processed to detect the position of the covered end 1c of the electric wire 1 to inspect whether the crimping part 3 is good or defective. And image processing means 7.

更に詳細に説明すると、圧着部照明手段4は、例えば、発光ダイオード(LED)等からなり、圧着部3に所定色相、例えば、白色、赤色、緑色、青色等の圧着部照明光8を照射するようになっている。背景体照明手段5は、例えば、発光ダイオード(LED)等からなり、背景体9に圧着部照明光8とは異なる色相、好ましくは、前記圧着部照明光8とは補色又はこれに近似する関係にあるような色相差が大きい色相の背景体照明光10、例えば、圧着部照明光8が赤色の場合、青色の背景体照明光10を照射するようになっている。撮像手段6はテレビカメラ、CCD等からなり、前記照明光8、10により照射された圧着部3及び背景体9を撮像するようになっている。更に、画像処理手段7は撮像手段6で撮像された撮像データを画像処理して画素の輝度データを2値化し、2値化データの明部をカウントして予め設定されたしきい値と比較することにより、電線1の被覆端部1cと被覆バレル2bの前側縁部間の長さLを測定し、被覆端部1cの位置を検出して、基準値と比較することにより、圧着部3の良、不良を検査するようになっている。   More specifically, the crimping part illumination means 4 is composed of, for example, a light emitting diode (LED) or the like, and irradiates the crimping part 3 with a crimping part illumination light 8 of a predetermined hue, for example, white, red, green, and blue. It is like that. The background body illumination means 5 is made of, for example, a light emitting diode (LED), and the background body 9 has a hue different from that of the crimping portion illumination light 8, preferably a complementary color or a relation approximate to the crimping portion illumination light 8. When the background illumination light 10 having a large hue difference, for example, the crimping portion illumination light 8 is red, the blue background illumination light 10 is emitted. The imaging means 6 is composed of a television camera, CCD or the like, and images the crimping part 3 and the background body 9 irradiated by the illumination lights 8 and 10. Further, the image processing means 7 performs image processing on the image data picked up by the image pickup means 6, binarizes the luminance data of the pixels, counts the bright portion of the binarized data, and compares it with a preset threshold value. By measuring the length L between the covered end 1c of the electric wire 1 and the front edge of the covered barrel 2b, detecting the position of the covered end 1c and comparing it with the reference value, It is designed to inspect for good and bad.

なお、11は撮像手段6で得られた圧着部3及び背景体9の撮像データをモニターするモニターテレビジョン受像機、12は圧着部3の良、不良の検査結果をプリンタ、ディスプレー等に出力する検査出力部、13は画像処理に必要なプログラムデータ等を入力するキーボードである。   Reference numeral 11 denotes a monitor television receiver for monitoring the imaging data of the crimping part 3 and the background body 9 obtained by the imaging means 6, and 12 denotes a test result of good and bad of the crimping part 3 to a printer, a display or the like. An inspection output unit 13 is a keyboard for inputting program data and the like necessary for image processing.

前記圧着状態検査装置を用いて、圧着端子2の圧着状態を検査する場合には、図1、2に示すように、例えば、被覆色が白色又はグレー色の電線1の端部に圧着して取り付けられた圧着端子2を90度電線1の軸線の回りに回転させて横向きにし、撮像手段6の真下で背景色が白色又はグレー色の背景体9から所定の高さ浮かせた位置に保持する。次に、その横向きの圧着部3に、その両側斜め上方に配設された2個の圧着部照明手段4から、例えば、赤色の色相の圧着部照明光8を斜め下向きに照射すると共に、圧着部3の背景体9に、圧着部3の前側斜め上方に配設された背景体照明手段5から、圧着部照明光8とは色相差が大きく異なり、略補色関係の色相である青色の背景体照明光10を斜め下向きに照射する。次に、これら照明光8、10により照射された圧着部3及び背景体9を撮像手段6で撮像し、その撮像データを画像処理手段7で画像処理して圧着部3における電線1の被覆端部1cの位置を検出することにより、圧着部3の良、不良を検査する。   When the crimping state of the crimp terminal 2 is inspected using the crimping state inspection device, for example, as shown in FIGS. 1 and 2, the crimping color is crimped to the end of the electric wire 1 having a white or gray color. The attached crimping terminal 2 is rotated 90 degrees around the axis of the electric wire 1 so as to be turned sideways, and is held at a position floated at a predetermined height from the background body 9 whose background color is white or gray just below the imaging means 6. . Next, the laterally crimped portion 3 is irradiated with, for example, a crimped portion illumination light 8 having a red hue obliquely downward from the two crimped portion illumination means 4 disposed obliquely upward on both sides, and crimped. The background body 9 of the portion 3 is different from the background portion illumination means 5 disposed obliquely above the front side of the crimping portion 3 in the hue difference from the crimping portion illumination light 8 and has a substantially complementary color-related blue background. The body illumination light 10 is irradiated obliquely downward. Next, the crimping part 3 and the background body 9 irradiated by these illumination lights 8 and 10 are imaged by the imaging means 6, and the image data is subjected to image processing by the image processing means 7, and the covered end of the electric wire 1 in the crimping part 3. By detecting the position of the part 1c, the crimping part 3 is inspected for quality.

図1、2に示す実施形態の圧着状態検査方法及び検査装置によると、前記圧着端子2の圧着部3に圧着部照明手段4から所定色相の圧着部照明光8を照射すると共に、前記圧着部3の背景体9に背景体照明手段5から圧着部照明光8とは異なる色相の背景体照明光10を照射するようにしたので、圧着部3における電線1の被覆色と背景体9の背景色が、例えば、白色又はグレー色で両者の色相差が小さい場合でも、圧着部3及び背景体9にそれぞれ照射される異なる色相の圧着部照明光8及び背景体照明光10によって広がり、撮像手段6で得られた圧着部3及び背景体9の撮像データのコントラストが大きくなる。また、背景体9側から圧着部3を照明するのではなく、背景体9を照明するので、圧着部3の輪郭が不明瞭になりにくい。その結果、その撮像データを画像処理手段7で画像処理したとき、圧着部3における電線1の被覆端部1cの位置を容易に検出することが可能になり、圧着端子2の圧着部3における圧着状態の良、不良を精度よく的確に検査することができる。   According to the crimping state inspection method and inspection apparatus of the embodiment shown in FIGS. 1 and 2, the crimping portion 3 of the crimping terminal 2 is irradiated with the crimping portion illumination light 8 having a predetermined hue from the crimping portion illumination means 4, and the crimping portion. The background body illumination means 10 irradiates the background body illumination light 10 having a hue different from that of the crimping portion illumination light 8 from the background body illumination means 5, so that the covering color of the electric wire 1 in the crimping portion 3 and the background of the background body 9 Even when the color is, for example, white or gray and the hue difference between the two is small, the crimping unit 3 and the background body 9 are spread by the crimping unit illumination light 8 and the background body illumination light 10 with different hues, respectively. The contrast of the imaging data of the crimping part 3 and the background body 9 obtained in 6 increases. Moreover, since the crimping | compression-bonding part 3 is not illuminated from the background body 9 side but the background body 9 is illuminated, the outline of the crimping | compression-bonding part 3 does not become obscure easily. As a result, when the image data is subjected to image processing by the image processing means 7, it is possible to easily detect the position of the covered end portion 1 c of the electric wire 1 in the crimping portion 3, and crimping in the crimping portion 3 of the crimping terminal 2. It is possible to accurately and accurately inspect whether the state is good or bad.

図3は本発明に係る圧着端子の圧着状態検査方法及び検査装置の他の実施形態を示し、背景色切り替え手段で背景体の背景色を切り替える前の状態の正面概要図、図4は図3に示す実施形態において、背景色切り替え手段で背景体の背景色を切り替えた後の状態の正面概要図である。   FIG. 3 shows another embodiment of the crimp terminal crimping state inspection method and inspection apparatus according to the present invention, and is a schematic front view of the state before the background color is switched by the background color switching means. FIG. In embodiment shown in FIG. 5, it is a front schematic diagram of the state after switching the background color of a background body by the background color switching means.

本実施形態の圧着端子2の圧着状態検査装置は、図3、4に示すように、電線の端部に圧着により取り付けられた圧着端子2の圧着部3に背景体16の背景色とは異なる色相の圧着部照明光17を照射する圧着部照明手段14と、前記圧着端子2の圧着部3における背景体16の背景色を圧着部3における電線1の被覆色に応じてこれとは異なる背景色に切り替える背景色切り替え手段15と、前記圧着部3及び背景体16を撮像する撮像手段6と、その撮像データを画像処理して電線1の被覆端部1cの位置を検出することにより圧着部3の良、不良を検査する画像処理手段7とを備える。   As shown in FIGS. 3 and 4, the crimp state inspection device for the crimp terminal 2 of the present embodiment is different from the background color of the background body 16 in the crimp part 3 of the crimp terminal 2 attached to the end of the electric wire by crimping. The crimping part illumination means 14 for irradiating the crimping part illumination light 17 of the hue, and the background color of the background body 16 in the crimping part 3 of the crimping terminal 2 is different from this depending on the covering color of the electric wire 1 in the crimping part 3 A background color switching means 15 for switching to a color, an imaging means 6 for imaging the crimping part 3 and the background body 16, and a crimping part by performing image processing on the imaged data and detecting the position of the covering end 1c of the electric wire 1 3 and image processing means 7 for inspecting good and bad.

更に、前記背景色切り替え手段15が、複数、例えば、2個の異なる背景色、即ち、白色の背景体片16a及び黒色の背景体片16bを並列に配列して連結させた矩形板状の背景体16と、背景体16に連結され、圧着部3における電線1の被覆色に応じてその被覆色とは異なる背景色の背景体片16a又は背景体片16bを圧着部3に対向する位置まで移動させて背景体16の背景色を切り替える流体圧シリンダからなる背景体駆動部18とを有する構成になっている。   Further, the background color switching means 15 has a rectangular plate-like background in which a plurality of, for example, two different background colors, that is, a white background piece 16a and a black background piece 16b are arranged in parallel and connected. The body 16 and the background body 16 are connected to the background body 16, and the background body piece 16 a or the background body piece 16 b having a background color different from the coating color according to the coating color of the electric wire 1 in the crimping section 3 is positioned to face the crimping section 3. A background body drive unit 18 including a fluid pressure cylinder that is moved to switch the background color of the background body 16 is provided.

圧着部照明手段14は圧着部照明手段4と実質同一構成のもので、例えば、発光ダイオード(LED)等よりなる。撮像手段6及び画像処理手段7は図1、2に示す実施形態のものと同一なので、詳細説明を省略する。   The crimping part illumination unit 14 has substantially the same configuration as the crimping part illumination unit 4, and includes, for example, a light emitting diode (LED). Since the image pickup means 6 and the image processing means 7 are the same as those of the embodiment shown in FIGS.

背景色切り替え手段15は、下記表1に示すように、電線1の被覆色が緑、青色等のように濃い色(暗い色)の場合には、背景体駆動部18のピストンロッド18aを伸長させて背景体16の背景色が白色の背景体片16aが圧着端子2の圧着部3に真下に対向する位置に来るように配置させ(図3参照)、電線1の被覆色が赤、ピンク色等のように淡い色(明るい色)の場合には、背景体駆動部18のピストンロッド18aを縮退させて、背景体16の背景色が黒色の背景体片16bが前記圧着部3の真下に対向する位置に来るように配置させ(図4参照)、背景色を白色から黒色に、又は、黒色から白色に切り替えることができるようになっている。   As shown in Table 1 below, the background color switching means 15 extends the piston rod 18a of the background body drive unit 18 when the covering color of the electric wire 1 is dark (dark) such as green or blue. Then, the background body piece 16a whose background color of the background body 16 is white is arranged so as to come to a position directly opposite to the crimping portion 3 of the crimp terminal 2 (see FIG. 3), and the covering color of the electric wire 1 is red, pink In the case of a light color (bright color) such as a color, the piston rod 18a of the background body driving unit 18 is degenerated so that the background body piece 16b whose background color of the background body 16 is black is directly below the crimping unit 3. The background color can be switched from white to black, or from black to white.

なお、圧着部照明手段14から照射される圧着部照明光の色相は、背景体16の背景色が白色の場合には緑、青色系統のもの、背景体16の背景色が黒色の場合には、赤、白色系統のものを選択することが望ましい。   The hue of the crimping part illumination light emitted from the crimping part illumination means 14 is green or blue when the background color of the background body 16 is white, and when the background color of the background body 16 is black. It is desirable to select a red, white system.

Figure 0004369799
Figure 0004369799

図3、4に示す実施形態の圧着状態検査装置を用いて、圧着端子2の圧着状態を検査する場合には、図3に示すように、例えば、被覆色が青色の電線1の端部に圧着して取り付けられた圧着端子2を90度電線1の軸線の回りに回転させて横向きにし、撮像手段6の真下で背景体16から所定の高さ浮かせた位置に保持する。次に、背景体駆動部18のピストンロッド18aを伸長させて、背景体16の背景色が白色の背景体片16aが圧着部3の真下に対向する位置に来るように配置させる。次に、前記横向きの圧着部3に、その両側斜め上方に配設された2個の圧着部照明手段14から、例えば、青色の色相の圧着部照明光17を斜め下向きに照射する。次に、この照明光17により照射された圧着部3及び背景体16の背景体片16aを撮像手段6で撮像し、その撮像データを画像処理手段7で画像処理して圧着部3における電線1の被覆端部1cの位置を検出し、圧着部3の良、不良を検査する。   When the crimping state of the crimp terminal 2 is inspected using the crimping state inspection apparatus of the embodiment shown in FIGS. 3 and 4, for example, as shown in FIG. The crimp terminal 2 attached by crimping is rotated 90 degrees around the axis of the electric wire 1 to be turned sideways, and is held at a position floating a predetermined height from the background body 16 just below the imaging means 6. Next, the piston rod 18 a of the background body drive unit 18 is extended so that the background body piece 16 a with the white background color of the background body 16 comes to a position facing directly below the crimping unit 3. Next, the crimping portion illumination light 17 having, for example, a blue hue is irradiated obliquely downward from the two crimping portion illumination means 14 disposed obliquely above both sides of the lateral crimping portion 3. Next, the crimping part 3 and the background body piece 16a of the background body 16 irradiated by the illumination light 17 are imaged by the imaging means 6, and the imaging data is subjected to image processing by the image processing means 7, and the electric wire 1 in the crimping part 3 is processed. The position of the covering end 1c is detected, and the crimping part 3 is inspected for good or bad.

被覆色が、例えば、赤色の電線1に取り付けられた圧着端子2の圧着状態を検査する場合には、図4に示すように、背景体駆動部18のピストンロッド18aを縮退させて背景体16の背景色が黒色の背景体片16bが前記圧着部3の真下に対向する位置に来るように配置させ、背景色を白色から黒色に切り替える。次に、図3に示すものと同様に保持された横向きの圧着端子2の圧着部3に、圧着部照明手段14から、今度は、例えば、赤色の色相の圧着部照明光17を斜め下向きに照射し、この照明光17により照射された圧着部3及び背景体16の背景体片16bを撮像手段6で撮像し、その撮像データを画像処理手段7で画像処理して圧着部3における電線1の被覆端部1cの位置を検出し、圧着部3の良、不良を検査する。   For example, when the crimping state of the crimp terminal 2 attached to the red electric wire 1 is inspected, the piston rod 18a of the background drive unit 18 is degenerated as shown in FIG. The background body piece 16b having a black background color is arranged so as to be located at a position facing directly below the crimping portion 3, and the background color is switched from white to black. Next, the crimping portion illumination means 14 applies, for example, a red hue crimping portion illumination light 17 obliquely downward to the crimping portion 3 of the lateral crimping terminal 2 held in the same manner as shown in FIG. The crimping section 3 and the background body piece 16b of the background body 16 irradiated with the illumination light 17 are imaged by the imaging means 6, and the image data is image-processed by the image processing means 7, and the electric wire 1 in the crimping section 3 is irradiated. The position of the covering end 1c is detected, and the crimping part 3 is inspected for good or bad.

図3、4に示す実施形態の圧着状態検査方法及び検査装置によると、前記圧着部3における背景体16の背景色を背景色切り替え手段15により、圧着部3における電線1の被覆色に応じて、これとは異なる背景色に切り替えるようにしたので、圧着部3における電線1の被覆色と背景体16の背景色との色相差が広がり、撮像手段6で得られた圧着部3及び背景体16の撮像データのコントラストが大きくなる。また、背景体16側から圧着部3を照明しないので、圧着部3の輪郭が不明瞭になることがない。その結果、その撮像データを画像処理手段7で画像処理したとき、圧着部3における電線1の被覆端部1cの位置を容易に検出することが可能になり、圧着端子2の圧着部3における圧着状態の良、不良を精度よく的確に検査することができる。   According to the crimping state inspection method and inspection apparatus of the embodiment shown in FIGS. 3 and 4, the background color of the background body 16 in the crimping part 3 is changed by the background color switching means 15 according to the covering color of the electric wire 1 in the crimping part 3. Since the background color is switched to a different background color, the difference in hue between the covering color of the electric wire 1 and the background color of the background body 16 in the crimping portion 3 is widened, and the crimping portion 3 and the background body obtained by the imaging means 6 are spread. The contrast of the 16 image data increases. Moreover, since the crimping | compression-bonding part 3 is not illuminated from the background body 16 side, the outline of the crimping | compression-bonding part 3 does not become obscure. As a result, when the image data is subjected to image processing by the image processing means 7, it is possible to easily detect the position of the covered end portion 1 c of the electric wire 1 in the crimping portion 3, and crimping in the crimping portion 3 of the crimping terminal 2. It is possible to accurately and accurately inspect whether the state is good or bad.

更に、上記したように、圧着端子2の圧着部3に背景体16の背景色とは異なる色相の圧着部照明光17を圧着部3及び背景体16を撮像する前に照射するようにすると、圧着部3における電線1の被覆色の色相が圧着部照明光17の色相側に偏向し、撮像手段6で得られた圧着部3及び背景体16の撮像データのコントラストがより大きくなって、電線1の被覆端部1cの位置の検出が更に容易になり、圧着部3の圧着状態をより的確に検査することができるので好ましい。   Furthermore, as described above, when the crimping portion 3 of the crimping terminal 2 is irradiated with the crimping portion illumination light 17 having a hue different from the background color of the background body 16 before imaging the crimping portion 3 and the background body 16, The hue of the covering color of the electric wire 1 in the crimping part 3 is deflected to the hue side of the crimping part illumination light 17, and the contrast of the imaging data of the crimping part 3 and the background body 16 obtained by the imaging means 6 becomes larger. It is preferable because the detection of the position of one covering end 1c is further facilitated and the crimping state of the crimping part 3 can be more accurately inspected.

なお、背景色切り替え手段15における背景体16は3個以上の異なる背景色の背景体片16a、16b等を配列させて形成するようにしてもよい。また、複数の背景体片16a、16b等を円形状に配列させて円板状に形成し、この背景体16をモータ等の背景体駆動部18で回転駆動させることにより背景色を切り替えるように構成してもよい。   The background body 16 in the background color switching means 15 may be formed by arranging three or more background body pieces 16a, 16b having different background colors. Further, a plurality of background body pieces 16a, 16b, etc. are arranged in a circular shape to form a disk shape, and the background color is switched by rotating the background body 16 with a background body drive unit 18 such as a motor. It may be configured.

本発明に係る圧着端子の圧着状態検査方法及び検査装置の1実施形態を示す正面概要図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a front schematic diagram which shows one Embodiment of the crimping | compression-bonding state inspection method and inspection apparatus of the crimp terminal which concerns on this invention. 図1の側面概要図である。It is a side surface schematic diagram of FIG. 本発明に係る圧着端子の圧着状態検査方法及び検査装置の他の実施形態を示し、背景色切り替え手段で背景体の背景色を切り替える前の状態の正面概要図である。It is a front schematic diagram of the state before switching the background color of the background body with the background color switching means, showing another embodiment of the crimping state inspection method and the inspection device of the crimp terminal according to the present invention. 図3に示す実施形態において、背景色切り替え手段で背景体の背景色を切り替えた後の状態の正面概要図である。In embodiment shown in FIG. 3, it is a front schematic diagram of the state after switching the background color of a background body by the background color switching means. 電線の端部に圧着により圧着端子が取り付けられた状態を示す正面図である。It is a front view which shows the state by which the crimp terminal was attached to the edge part of the electric wire by crimping.

符号の説明Explanation of symbols

1 電線
1a 導体
1b 被覆
1c 被覆端部
2 圧着端子
2a 導体バレル
2b 被覆バレル
3 圧着部
4 圧着部照明手段
5 背景体照明手段
6 撮像手段
7 画像処理手段
8 圧着部照明光
9 背景体
10 背景体照明光
11 モニターテレビジョン受像機
12 検査出力部
13 キーボード
14 圧着部照明手段
15 背景色切り替え手段
16 背景体
16a 背景体片
16b 背景体片
17 圧着部照明光
18 背景体駆動部
18a ピストンロッド
DESCRIPTION OF SYMBOLS 1 Electric wire 1a Conductor 1b Cover 1c Cover end 2 Crimp terminal 2a Conductor barrel 2b Cover barrel 3 Crimp part 4 Crimp part illumination means 5 Background body illumination means 6 Imaging means 7 Image processing means 8 Crimp part illumination light 9 Background body 10 Background body Illumination light 11 Monitor television receiver 12 Inspection output unit 13 Keyboard 14 Crimping unit illumination unit 15 Background color switching unit 16 Background body 16a Background body piece 16b Background body piece 17 Crimping unit illumination light 18 Background body drive unit 18a Piston rod

Claims (2)

電線の端部に圧着により取り付けられた圧着端子の圧着状態を画像処理により検査する圧着端子の圧着状態検査装置において、前記圧着端子の圧着部における背景体の背景色を圧着部における電線の被覆色に応じてこれとは異なる背景色に切り替える背景色切り替え手段と、前記圧着部及び背景体を撮像する撮像手段と、その撮像データを画像処理して電線の被覆端部の位置を検出することにより圧着部の良、不良を検査する画像処理手段とを備え、前記背景色切り替え手段が、複数の異なる背景色の背景体片を配列させた背景体と、背景体に連結され、圧着部における電線の被覆色に応じてその被覆色とは異なる背景色の背景体片を圧着部に対向する位置まで移動させて背景色を切り替える背景体駆動部とを有することを特徴とする圧着端子の圧着状態検査装置。   In a crimping terminal crimping state inspection device for inspecting the crimping state of a crimping terminal attached to the end of an electric wire by crimping, the background color of the background body in the crimping part of the crimping terminal is the coating color of the wire in the crimping part A background color switching means for switching to a background color different from this, an imaging means for imaging the crimping part and the background body, and image processing of the imaging data to detect the position of the covered end of the wire An image processing means for inspecting the goodness and failure of the crimping portion, and the background color switching means is connected to the background body in which a plurality of background body pieces of different background colors are arranged, and the electric wire in the crimping portion. A crimping end having a background body drive unit that switches a background color by moving a background body piece of a background color different from the coating color according to the coating color to a position facing the crimping unit Of the crimping state inspection apparatus. 前記圧着端子の圧着部に背景体の背景色とは異なる色相の圧着部照明光を照射する圧着部照明手段を備えることを特徴とする請求項記載の圧着端子の圧着状態検査装置。 The crimping crimping state inspecting device of the crimp terminal according to claim 1, characterized in that it comprises a crimping portion illumination means for illuminating the crimped portion illumination light having a color different from the background color of the background material to the crimping portion of the terminal.
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CN103123327B (en) * 2013-02-22 2015-11-04 中国南方电网有限责任公司超高压输电公司曲靖局 Gold utensil crimp quality prospecting apparatus

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