JPH08159732A - Appearance inspection device for electronic parts - Google Patents
Appearance inspection device for electronic partsInfo
- Publication number
- JPH08159732A JPH08159732A JP6302208A JP30220894A JPH08159732A JP H08159732 A JPH08159732 A JP H08159732A JP 6302208 A JP6302208 A JP 6302208A JP 30220894 A JP30220894 A JP 30220894A JP H08159732 A JPH08159732 A JP H08159732A
- Authority
- JP
- Japan
- Prior art keywords
- image
- lead
- image pickup
- pickup means
- lead wire
- 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
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- Manufacturing Cores, Coils, And Magnets (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Image Analysis (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Image Processing (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、リード曲がり検査を画
像処理によって行う電子部品の外観検査装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a visual inspection apparatus for electronic parts which performs a lead bending inspection by image processing.
【０００２】[0002]
【従来の技術】電子部品のなかでも、部品軸線方向両端
にリード線を有するアキシャルリード型の電子部品、例
えば抵抗器，コンデンサ，インダクタ等に関しては、外
観検査の一項目としてリード線の曲がり有無の判別があ
る。2. Description of the Related Art Among electronic components, regarding an axial lead type electronic component having lead wires at both ends in the axial direction of the component, such as resistors, capacitors, and inductors, whether or not the lead wire is bent is one of the items of appearance inspection. There is a distinction.
【０００３】ここで、従来一般に実施されているリード
曲がり検査の手順を、図５（ａ），（ｂ）を参照して説
明する。Here, the procedure of the lead bending inspection which has been generally performed conventionally will be described with reference to FIGS. 5 (a) and 5 (b).
【０００４】まず、検査対象となる部品Ｐ、即ち、部品
軸線方向両端にリード線Ｒを有する部品Ｐを所定の検査
位置に搬送し、該部品Ｐを部品軸線と直交する向きで配
置したＣＣＤカメラＣで撮像して、図５（ｂ）に示すよ
うな画面中央に部品像Ｉｐ及びリード像Ｉｒが位置する
画像Ｉを取り込む。First, a component P to be inspected, that is, a component P having lead wires R at both ends in the axial direction of the component is conveyed to a predetermined inspection position, and the component P is arranged in a direction orthogonal to the component axis. The image is picked up at C, and the image I in which the component image Ip and the lead image Ir are located at the center of the screen as shown in FIG.
【０００５】次に、取り込んだ画像Ｉにおいてリード像
Ｉｒが適正位置にあるか否かを、予め記憶してある良品
像との比較において判別し、リード像Ｉｒに異常がない
場合はリード曲がり無しの判定を下し、また、リード像
Ｉｒに異常がある場合はリード曲がり有りの判定を下
す。Next, whether or not the lead image Ir is at the proper position in the captured image I is judged by comparison with a previously stored non-defective image, and if there is no abnormality in the lead image Ir, there is no lead bending. If the lead image Ir is abnormal, it is determined that the lead is bent.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記従
来の検査方法では、部品Ｐのリード線Ｒに図６（ａ），
（ｂ）に示すような曲がり、即ち、ＣＣＤカメラＣの撮
像向き（図中白抜矢印方向）と一致した方向の曲がりが
あると、該リード曲がりが画像Ｉ上に現れないために、
リード曲がり無しとして誤判定される問題点がある。こ
の問題は部品Ｐを挟んで２台のＣＣＤカメラを対向配置
した場合にも生じ得る。However, in the above-described conventional inspection method, the lead wire R of the component P has the structure shown in FIG.
If there is a bend as shown in (b), that is, a bend in a direction that coincides with the imaging direction of the CCD camera C (the direction of the white arrow in the figure), the lead bend does not appear on the image I,
There is a problem that the lead is not bent. This problem can occur even when two CCD cameras are arranged opposite to each other with the part P interposed therebetween.
【０００７】本発明は上記問題点に鑑みてなされたもの
で、その目的とするところは、リード曲がりの検査能力
を格段向上できる電子部品の外観検査装置を提供するこ
とにある。The present invention has been made in view of the above problems, and an object of the present invention is to provide a visual inspection apparatus for electronic parts, which can significantly improve the inspection capability of lead bending.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明は、リード線を有する電子部品をＣ
ＣＤカメラ等の撮像手段によって撮像し、該撮像手段か
らの画像信号に基づいてリード線の曲がり有無を判別す
る電子部品の外観検査装置において、電子部品の周囲に
リード線と直交する向きで複数の撮像手段を配置し、こ
れら撮像手段相互の角度間隔を１８０度未満としたこと
を特徴としている。To achieve the above object, the invention of claim 1 provides an electronic component having a lead wire as C
In a visual inspection apparatus for an electronic component, which picks up an image by an image pickup unit such as a CD camera and determines whether or not the lead wire is bent based on an image signal from the image pickup unit, a plurality of electronic components are arranged around the electronic component in a direction orthogonal to the lead line. The image pickup means is arranged, and the angular interval between these image pickup means is less than 180 degrees.
【０００９】請求項２の発明は、請求項１記載の外観検
査装置において、撮像手段を２台とし、撮像手段相互の
角度間隔を９０度以下とした、ことを特徴としている。According to a second aspect of the invention, in the appearance inspection apparatus according to the first aspect, the number of image pickup means is two, and the angular interval between the image pickup means is 90 degrees or less.
【００１０】[0010]
【作用】請求項１の発明では、リード線を有する電子部
品は、その周囲に配置された撮像手段夫々で撮像され
る。撮像手段相互の角度間隔を１８０度未満としてある
ので、リード線に一撮像手段の撮像向きと一致した方向
の曲がりがある場合でも、該リード曲がりを他の撮像手
段の画像上で捕らえることができる。According to the first aspect of the invention, the electronic component having the lead wire is imaged by each of the image pickup means arranged around it. Since the angular interval between the image pickup means is less than 180 degrees, even if the lead wire has a bend in a direction that matches the image pickup direction of one image pickup means, the lead bend can be captured on the image of another image pickup means. .
【００１１】請求項２の発明では、撮像手段が２台と
し、撮像手段相互の角度間隔を９０度以下とすること
で、最小限の撮像手段台数で上記同様のリード曲がり検
査を実施できる。According to the second aspect of the present invention, the number of image pickup means is two, and the angle interval between the image pickup means is 90 degrees or less. Therefore, the same lead bending inspection as described above can be performed with a minimum number of image pickup means.
【００１２】[0012]
【実施例】図１には本発明を適用した外観検査装置の要
部斜視図を、また図２には外観検査装置の全体構成図を
示してある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a main part of an appearance inspection apparatus to which the present invention is applied, and FIG. 2 is an overall configuration diagram of the appearance inspection apparatus.
【００１３】図１において、Ｐは検査対象となる部品、
Ｒは部品軸線方向両端に設けられたリード線、Ｃ１は第
１のＣＣＤカメラ、Ｃ２は第２のＣＣＤカメラである。
本実施例では、第１のＣＣＤカメラＣ１を部品Ｐの周囲
に部品軸線（リード線Ｒ）と直交する垂直向きで配置
し、第２のＣＣＤカメラＣ２を部品Ｐの周囲の部品軸線
（リード線Ｒ）と直交する水平向きで配置してあり、カ
メラ相互の角度間隔θ１を９０度としてある。In FIG. 1, P is a part to be inspected,
R is a lead wire provided at both ends in the axial direction of the component, C1 is a first CCD camera, and C2 is a second CCD camera.
In the present embodiment, the first CCD camera C1 is arranged around the component P in a vertical direction orthogonal to the component axis (lead wire R), and the second CCD camera C2 is arranged around the component P (component wire (lead wire). R) is arranged in a horizontal direction orthogonal to each other, and an angular interval θ1 between the cameras is 90 degrees.
【００１４】図２において、１はコンピュータ構成の画
像処理ユニット、２は各ＣＣＤカメラＣ１，Ｃ２の画像
を同時に表示するモニターである。画像処理ユニット１
は、各ＣＣＤカメラＣ１，Ｃ２からの画像信号（撮像視
野の輝度データ）を記憶する輝度データメモリ１ａと、
画像処理及びリード曲がりの有無の判定を行う処理判定
部１ｂと、曲がり判定の基準となる良品像のデータを記
憶する基準データメモリ１ｃとから構成されている。In FIG. 2, 1 is an image processing unit having a computer configuration, and 2 is a monitor for simultaneously displaying the images of the CCD cameras C1 and C2. Image processing unit 1
Is a brightness data memory 1a for storing image signals (brightness data of the imaging field of view) from the CCD cameras C1 and C2,
It is composed of a processing determination unit 1b that performs image processing and determination of whether or not there is a lead bend, and a reference data memory 1c that stores data of a non-defective image that serves as a reference for bend determination.
【００１５】以下に上述の外観検査装置で実施されるリ
ード曲がり検査の手順を説明する。まず、検査対象とな
る部品Ｐを所定の検査位置（図１（ａ）参照）に搬送
し、該部品Ｐを２台のＣＣＤカメラＣ１，Ｃ２で同時
に、或いは時間をずらして撮像する。これにより、第１
のＣＣＤカメラＣ１では部品Ｐの上面が、また第２のＣ
ＣＤカメラＣ２ではこれと９０度異なる部品Ｐの側面が
夫々撮像され、これら画像はモニター２に表示される。
各ＣＣＤカメラＣ１，Ｃ２からの画像信号（撮像視野の
輝度データ）は２値化処理等を経て画像処理ユニット１
の輝度データメモリ１ａに記憶される。The procedure of the lead bending inspection carried out by the above appearance inspection apparatus will be described below. First, the part P to be inspected is conveyed to a predetermined inspection position (see FIG. 1A), and the part P is imaged by the two CCD cameras C1 and C2 at the same time or at different times. Thereby, the first
In the CCD camera C1 of the above, the upper surface of the component P is
The CD camera C2 images the side surfaces of the component P that are different by 90 degrees, and these images are displayed on the monitor 2.
The image signals from the CCD cameras C1 and C2 (luminance data of the imaging field of view) undergo binarization processing and the like, and then undergo image processing unit 1
Are stored in the luminance data memory 1a.
【００１６】次に、各ＣＣＤカメラＣ１，Ｃ２の画像夫
々を、予め基準データメモリ１ｃに記憶してある良品像
と比較、詳しくは、各ＣＣＤカメラＣ１，Ｃ２の夫々で
得られた部品像Ｉｐ及びリード像Ｉｒの輪郭が、良品像
の輪郭と許容差を含む位置範囲で一致するか否かを判別
し、両方のリード像Ｉｒに異常がない場合にはリード曲
がり無しの判定を下し、また、何れか一方のリード像Ｉ
ｒに異常がある場合はリード曲がり有りの判定を下す。Next, each of the images of the CCD cameras C1 and C2 is compared with a non-defective image which is stored in the reference data memory 1c in advance, and more specifically, a component image Ip obtained by each of the CCD cameras C1 and C2. And, it is determined whether or not the contour of the lead image Ir matches the contour of the non-defective image in a position range including a tolerance, and if both lead images Ir are normal, it is determined that there is no lead bending. In addition, one of the lead images I
If there is an abnormality in r, it is judged that the lead is bent.
【００１７】検査対象となる部品Ｐにリード曲がりが無
いときは、各ＣＣＤカメラＣ１，Ｃ２の画像は、共に図
５（ｂ）に示すような画面中央に部品像Ｉｐ及びリード
像Ｉｒが位置したものとなる。When there is no lead bending in the part P to be inspected, the images of the CCD cameras C1 and C2 both have the part image Ip and the lead image Ir at the center of the screen as shown in FIG. 5B. Will be things.
【００１８】一方、検査対象となる部品Ｐに図６
（ａ），（ｂ）に示すような曲がり、即ち、第１のＣＣ
ＤカメラＣ１の撮像向き（図中白抜矢印方向）と一致し
た方向の曲がりがあるときは、第１のＣＣＤカメラＣ１
の画像上にはリード曲がりが現れないが、該第１のＣＣ
ＤカメラＣ２と９０度向きが異なる第２のＣＣＤカメラ
Ｃ２の画像上にはこのリード曲がりが顕著に現れること
になる。On the other hand, the part P to be inspected is shown in FIG.
Bending as shown in (a) and (b), that is, the first CC
When there is a bend in a direction that matches the image pickup direction of the D camera C1 (the direction of the white arrow in the figure), the first CCD camera C1
Although the lead bend does not appear on the image of the
This lead bending will appear remarkably on the image of the second CCD camera C2, which is different from the D camera C2 by 90 degrees.
【００１９】つまり、検査対象となる部品Ｐのリード線
Ｒに、何れか一方のＣＣＤカメラの撮像向きと一致した
方向の曲がりがある場合でも、該リード曲がりを他方の
ＣＣＤカメラの画像上で捕らえて該画像に基づいてリー
ド曲がり有りの判定を的確に下すことができる。That is, even if the lead wire R of the part P to be inspected has a bend in a direction that coincides with the image pickup direction of one of the CCD cameras, the lead bend is captured on the image of the other CCD camera. Therefore, it is possible to accurately determine the presence of lead bending based on the image.
【００２０】尚、図１及び図２に示した実施例ではＣＣ
ＤカメラＣ１，Ｃ２の角度間隔θ１を９０度としたが、
該角度間隔θ１は１８０度未満であれば同様の作用，効
果を得られる。In the embodiment shown in FIGS. 1 and 2, CC
The angle interval θ1 between the D cameras C1 and C2 is 90 degrees,
If the angular interval θ1 is less than 180 degrees, the same action and effect can be obtained.
【００２１】また、図１及び図２に示した実施例ではＣ
ＣＤカメラとの位置関係で部品Ｐを軸線と直交する水平
方向に連続搬送することができないが、図３に示すよう
に各ＣＣＤカメラＣ１，Ｃ２を部品Ｐの上方または下方
に同様の角度間隔θ２を持って配置、或いは９０度より
も大きな角度間隔を持って上下に配置すれば、部品Ｐを
水平方向（図中矢印参照）に連続搬送する過程で上記の
リード曲がり検査を実施できる。In the embodiment shown in FIGS. 1 and 2, C is used.
Due to the positional relationship with the CD camera, the component P cannot be continuously conveyed in the horizontal direction orthogonal to the axis, but as shown in FIG. 3, the CCD cameras C1 and C2 are arranged above or below the component P in the same angular interval θ2. The lead bending inspection can be carried out in the process of continuously transporting the parts P in the horizontal direction (see the arrow in the figure) by arranging the parts P with each other or by arranging them vertically with an angular interval larger than 90 degrees.
【００２２】更に、部品周囲に配置するカメラ台数は２
台に限らず、例えば図４に示すように、３台のＣＣＤカ
メラＣ１，Ｃ２，Ｃ３を、部品軸線（リード線Ｒ）と直
交する向きで夫々１２０度の角度間隔θ３を持って配置
するようにしてもよく、カメラ台数を増やせばリード線
Ｒの微妙な曲がりをも確実に捕らえて検査能力をより向
上できる。Further, the number of cameras arranged around the parts is two.
Not limited to the stand, for example, as shown in FIG. 4, three CCD cameras C1, C2, C3 are arranged with an angular interval θ3 of 120 degrees in a direction orthogonal to the component axis line (lead wire R). However, if the number of cameras is increased, even a slight bend of the lead wire R can be reliably captured, and the inspection capability can be further improved.
【００２３】[0023]
【発明の効果】以上詳述したように、請求項１の発明に
よれば、検査対象となる部品のリード線に一撮像手段の
撮像向きと一致した方向の曲がりがある場合でも、該リ
ード曲がりを他の撮像手段の画像上で確実に捕らえて該
画像に基づいてリード曲がり有りの判定を的確に下すこ
とができ、これによりリード曲がりの検査能力を格段向
上できる利点がある。As described in detail above, according to the invention of claim 1, even when the lead wire of the component to be inspected has a bend in a direction that coincides with the image pickup direction of one image pickup means, the lead bend is caused. Can be reliably captured on the image of another imaging means, and the determination of lead bending can be accurately made based on the image, which has the advantage that the lead bending inspection capability can be significantly improved.
【００２４】請求項２の発明によれば、請求項１の発明
と同様の検査能力を得られることは勿論のこと、撮像手
段の台数を最小限に止めて装置構成を簡略化できる利点
がある。According to the second aspect of the present invention, not only the inspection capability similar to that of the first aspect of the invention can be obtained, but also the number of image pickup means can be minimized to simplify the apparatus structure. .
【図１】本発明の一実施例を示す外観検査装置の要部斜
視図FIG. 1 is a perspective view of a main part of an appearance inspection apparatus showing an embodiment of the present invention.
【図２】本発明の一実施例を示す外観検査装置の全体構
成図FIG. 2 is an overall configuration diagram of an appearance inspection device showing an embodiment of the present invention.
【図３】ＣＣＤカメラのの他の配置例を示す図FIG. 3 is a diagram showing another arrangement example of the CCD camera.
【図４】ＣＣＤカメラの他の配置例を示す図FIG. 4 is a diagram showing another arrangement example of a CCD camera.
【図５】従来の外観検査装置の要部斜視図と画像例を示
す図FIG. 5 is a perspective view of a main part of a conventional appearance inspection device and a diagram showing an image example.
【図６】従来の問題点を説明するための図FIG. 6 is a diagram for explaining conventional problems.
Ｐ…部品、Ｒ…リード線、Ｃ１，Ｃ２，Ｃ３…ＣＣＤカ
メラ、θ１，θ２，θ３…角度間隔、１…画像処理ユニ
ット。P ... Parts, R ... Lead wire, C1, C2, C3 ... CCD camera, θ1, θ2, θ3 ... Angle interval, 1 ... Image processing unit.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０１Ｇ 13/00 ３６１ Ａ 7924−5Ｅ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location H01G 13/00 361 A 7924-5E
Claims (2)
ラ等の撮像手段によって撮像し、該撮像手段からの画像
信号に基づいてリード線の曲がり有無を判別する電子部
品の外観検査装置において、 電子部品の周囲にリード線と直交する向きで複数の撮像
手段を配置し、これら撮像手段相互の角度間隔を１８０
度未満とした、 ことを特徴とする電子部品の外観検査装置。1. A visual inspection apparatus for an electronic component, wherein an electronic component having a lead wire is imaged by an image pickup means such as a CCD camera and the presence or absence of bending of the lead wire is determined based on an image signal from the image pickup means. A plurality of image pickup means are arranged in the periphery of the image pickup device in a direction orthogonal to the lead wire, and the angular interval between the image pickup means is 180 degrees.
A visual inspection device for electronic parts, characterized by being less than 100 degrees.
度間隔を９０度以下とした、 ことを特徴とする請求項１記載の電子部品の外観検査装
置。2. The appearance inspection apparatus for an electronic component according to claim 1, wherein there are two image pickup means, and an angular interval between the image pickup means is 90 degrees or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6302208A JPH08159732A (en) | 1994-12-06 | 1994-12-06 | Appearance inspection device for electronic parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6302208A JPH08159732A (en) | 1994-12-06 | 1994-12-06 | Appearance inspection device for electronic parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08159732A true JPH08159732A (en) | 1996-06-21 |
Family
ID=17906259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6302208A Pending JPH08159732A (en) | 1994-12-06 | 1994-12-06 | Appearance inspection device for electronic parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08159732A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1677070A1 (en) * | 2005-01-03 | 2006-07-05 | Kamax-Werke Rudolf Kellermann GmbH & Co. KG | Method and device for determining the deflection of a connecting element |
| JP2007180161A (en) * | 2005-12-27 | 2007-07-12 | Showa Denko Kk | Inspecting device of element piece and its application |
| CN105548645A (en) * | 2015-11-16 | 2016-05-04 | 王爱玲 | Electronic current transformer |
-
1994
- 1994-12-06 JP JP6302208A patent/JPH08159732A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1677070A1 (en) * | 2005-01-03 | 2006-07-05 | Kamax-Werke Rudolf Kellermann GmbH & Co. KG | Method and device for determining the deflection of a connecting element |
| US7278323B2 (en) | 2005-01-03 | 2007-10-09 | Kamax-Werke Rudolf Kellermann Gmbh & Co. Kg | Method and apparatus for determining the deflection of a fastener |
| JP2007180161A (en) * | 2005-12-27 | 2007-07-12 | Showa Denko Kk | Inspecting device of element piece and its application |
| JP4650259B2 (en) * | 2005-12-27 | 2011-03-16 | 株式会社村田製作所 | Device piece inspection device and its use |
| CN105548645A (en) * | 2015-11-16 | 2016-05-04 | 王爱玲 | Electronic current transformer |
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