JPH0244235A - Inspection of polarity for electronic component - Google Patents
Inspection of polarity for electronic componentInfo
- Publication number
- JPH0244235A JPH0244235A JP63194077A JP19407788A JPH0244235A JP H0244235 A JPH0244235 A JP H0244235A JP 63194077 A JP63194077 A JP 63194077A JP 19407788 A JP19407788 A JP 19407788A JP H0244235 A JPH0244235 A JP H0244235A
- Authority
- JP
- Japan
- Prior art keywords
- camera
- electronic component
- brightness
- observed
- light
- 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
- 238000007689 inspection Methods 0.000 title description 6
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 229920003002 synthetic resin Polymers 0.000 abstract description 2
- 239000000057 synthetic resin Substances 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N21/95684—Patterns showing highly reflecting parts, e.g. metallic elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0266—Marks, test patterns or identification means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Supply And Installment Of Electrical Components (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は電子部品の極性検査方法に係り、電子部品のモ
ールド体に形成された極性表示マークをカメラにより観
察して、電子部品の向きの合否を判断するようにしたも
のである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for inspecting the polarity of electronic components, in which a polarity display mark formed on a molded body of the electronic component is observed with a camera to determine the orientation of the electronic component. It is designed to judge pass/fail.
（従来の技術）
電子部品実装装置により、電子部品を基板に実装した場
合、電子部品の前後もしくは左右の向きが反対になって
極性が逆になる場合がある。(Prior Art) When an electronic component is mounted on a board by an electronic component mounting apparatus, the front and back or left and right directions of the electronic component may be reversed, resulting in reversed polarity.
このために、電子部品のモールド体の上面には孔部や文
字などの極性表示マークが形成されており、従来は、検
査員がこのマークを目視して向きの合否判断を行ってい
た。For this purpose, polarity display marks such as holes and letters are formed on the upper surface of the molded body of the electronic component, and conventionally, inspectors visually checked these marks to determine whether the orientation was acceptable or not.
（発明が解決しようとする課題）
しかしながら検査員の目視検査では作業能率があがらず
、また検査員の個人誤差により検査基準がばらつきやす
く、また錯誤により誤判断しやすい等の問題があった。(Problems to be Solved by the Invention) However, visual inspection by inspectors does not improve work efficiency, and there are problems in that inspection standards tend to vary due to individual errors of inspectors, and it is easy to make erroneous judgments due to errors.
ところで上記極性表示マークは一般に孔部や明色文字等
から成っているので、光の照射方向とカメラの観察方向
を工夫すれば、その輝度は周辺の輝度と若しくは異るの
で、光学的にその位置を検出することが可能となる。By the way, the above polarity display mark generally consists of a hole or brightly colored letters, so if the direction of light irradiation and the observation direction of the camera are adjusted, the brightness of the mark will be different from or different from the brightness of the surrounding area, so it can be optically determined. It becomes possible to detect the position.
そこで本発明は、上記のような極性表示マークの輝度特
性を利用して、電子部品の極性の向きを光学的手法によ
り簡単に検査できる方法を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a method for easily inspecting the polarity direction of an electronic component using an optical method by utilizing the luminance characteristics of the polarity display mark as described above.
（課題を解決するための手段）
このために本発明は、基板に実装された電子部品に、そ
のモールド体の上面に形成された極性表示マークに光反
射特性が生じるように光を照射し、カメラによりその輝
度を観察することにより、電子部品の向きを検査するよ
うにしたものである。(Means for Solving the Problems) For this purpose, the present invention irradiates light to an electronic component mounted on a board so that a polarity display mark formed on the upper surface of the molded body develops a light reflection characteristic, The orientation of electronic components is inspected by observing their brightness using a camera.
（作用）
上記構成において、基板上の電子部品の上面に光を照射
し、この上面をカメラにより観察して他の部分と輝度が
異る部分を検出することにより、この部分を極性表示マ
ークと認識し、電子部品の向きの合否を判断する。(Function) In the above configuration, light is irradiated onto the top surface of the electronic component on the board, and this top surface is observed with a camera to detect a portion where the brightness is different from other portions, thereby marking this portion as a polarity display mark. It recognizes and determines whether the orientation of electronic components is acceptable.
（実施例１） 次に、図面を参照しながら本発明の詳細な説明する。(Example 1) Next, the present invention will be described in detail with reference to the drawings.
第１図は外観検査装置を示すものであって、■は基板２
に実装された電子部品であり、その斜上方にカメラ３と
光源４が配設されている。Figure 1 shows the appearance inspection device, where ■ indicates the board 2.
A camera 3 and a light source 4 are disposed diagonally above the electronic component.
５はカメラ３に接続されたコンピュータのような制御装
置である。この電子部品１はリード付電子部品であって
、モールド体６の両側方にリードＬが複数本延出してい
る。このモールド体６は、黒色合成樹脂などの輝度の低
い素材にて形成されている。８はモールド体６の上面−
側部に形成された極性表示マークであって、円孔から成
っており、このマーク８により、電子部品１の前後もし
くは左右の向きを判断するようになっている。5 is a control device such as a computer connected to the camera 3. This electronic component 1 is an electronic component with leads, and has a plurality of leads L extending on both sides of the molded body 6. The molded body 6 is made of a material with low brightness such as black synthetic resin. 8 is the upper surface of the mold body 6 -
The polarity display mark 8 is formed on the side and consists of a circular hole, and is used to determine the front-rear or left-right orientation of the electronic component 1.
次に第２図を参照しながら、極性検査方法を説明する。Next, a polarity testing method will be explained with reference to FIG.
電子部品１の左斜上方から光を照射し、右斜上方のカメ
ラ３によりモールド体６の上面を観察する。するとこの
上面に当った光はカメラ３側へ反射し、カメラによりか
なり明るい輝度で観察されるが、マーク８に入射した光
はカメラ３側へは殆ど反射しないので、カメラ３に暗い
輝度で観察される。このようにマーク８の輝度は周辺の
輝度よりも低いことから、マーク８の位置がカメラ３に
より検出され、この電子部品１が正しい向きで基板２に
実装されているかどうかを判断する。Light is irradiated from the upper left side of the electronic component 1, and the upper surface of the molded body 6 is observed with the camera 3 located at the upper right side. Then, the light that hits this top surface is reflected towards the camera 3 side and is observed by the camera with a fairly bright brightness, but the light that is incident on the mark 8 is hardly reflected towards the camera 3 side, so it is observed by the camera 3 with a dark brightness. be done. Since the brightness of the mark 8 is lower than the brightness of the surrounding area, the position of the mark 8 is detected by the camera 3, and it is determined whether the electronic component 1 is mounted on the board 2 in the correct orientation.
（実施例２）
第３図に示す電子部品１１のモールド体１６の上面には
、極性表示マークとしての文字９が白色などの明るい塗
料により刻印されており、この文字の位置により、その
極性を判断できるようになっている。このものは、モー
ルド体６の上面の対角線位置にチエツクエリアＡ、Ｂを
設定し、斜上方に配設された光源４から光を照射して、
同一斜上方に配設されたカメラ３によりその上面を観察
する。すると文字９が刻印されたチエ７クエリアＡは明
るく観察され、他方のチエツクエリアＢは暗く観察され
る。そこで両エリアＡ、Ｂの輝度の高低を比較し、エリ
アＢよりもエリアＡの方が所定値以上高い輝度を有する
かどうかを検出することにより、電子部品１１の向きの
合否を判断する。このように２つのチエツクエリアＡ、
Ｂを設定し、その輝度の相対的な差により判断するよう
にすれば、例えば光源を交換したり、光源が劣化したり
してその照度の絶対値が変っても、極性の向きを正しく
判断できる。また、勿論上記第１実施例のものも、第２
実施例と同様にチエツクエリアを設定して、相対的な輝
度の差から極性の合否を判断するようにしてもよい。(Example 2) On the upper surface of the molded body 16 of the electronic component 11 shown in FIG. It is possible to judge. In this device, check areas A and B are set at diagonal positions on the upper surface of the mold body 6, and light is irradiated from a light source 4 disposed diagonally above.
The top surface is observed by a camera 3 disposed diagonally above. Then, the check area A on which the character 9 is engraved is observed brightly, and the other check area B is observed darkly. Therefore, by comparing the brightness level of both areas A and B and detecting whether or not area A has higher brightness than area B by a predetermined value or more, it is determined whether the orientation of electronic component 11 is acceptable or not. In this way, there are two check areas A,
By setting B and making judgments based on the relative difference in brightness, the polarity direction can be determined correctly even if the absolute value of the illuminance changes due to, for example, replacing the light source or deteriorating the light source. can. Also, of course, the first embodiment described above also has a second embodiment.
Similarly to the embodiment, a check area may be set to determine whether the polarity is acceptable or not based on the relative brightness difference.
上記各実施例から明らかなように、カメラ３や光源４は
、極性表示マークをその光反射特性から容易に検出でき
る位置や向きに配設されるものであり、その配設仕様は
モールド体の材質や極性表示マークの種類等によって適
宜決定される。As is clear from the above embodiments, the camera 3 and the light source 4 are arranged at positions and orientations where the polarity display mark can be easily detected from its light reflection characteristics, and the arrangement specifications are determined by the mold body. It is determined as appropriate depending on the material, the type of polarity display mark, etc.
（発明の効果）
以上説明したように本発明は、基板に実装された電子部
品に、そのモールド体の上面に形成された極性表示マー
クに光反射特性が生じるように光を照射し、カメラによ
りその輝度を観察することにより、電子部品の向きを検
査するようにしているので、電子部品が基板に正しい向
きで実装されているかどうかを簡単かつ正確に判断する
ことができる。(Effects of the Invention) As explained above, the present invention irradiates an electronic component mounted on a board with light so that the polarity display mark formed on the upper surface of the molded body has a light reflection characteristic, and uses a camera to Since the orientation of the electronic component is inspected by observing its brightness, it is possible to easily and accurately determine whether the electronic component is mounted on the board in the correct orientation.
図は本発明の実施例を示すものであって、第１図は外観
検査装置の斜視図、第２図は検査中の側面図、第３図は
他の実施例の検査中の斜視図である。
１．１１・・・電子部品
２・・・基板
３・・・カメラ
４・・・光源
８．９・・・極性表示マークThe drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of an external appearance inspection device, Fig. 2 is a side view during inspection, and Fig. 3 is a perspective view of another embodiment during inspection. be. 1.11...Electronic components 2...Board 3...Camera 4...Light source 8.9...Polarity display mark
Claims (1)
形成された極性表示マークに光反射特性が生じるように
光を照射し、カメラによりその輝度を観察することによ
り、電子部品の向きを検査するようにしたことを特徴と
する電子部品の極性検査方法。Inspect the orientation of electronic components by irradiating light on the electronic components mounted on the board in such a way that the polarity mark formed on the top surface of the molded body has light reflective properties, and observing the brightness with a camera. A method for testing polarity of electronic components, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63194077A JPH0244235A (en) | 1988-08-03 | 1988-08-03 | Inspection of polarity for electronic component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63194077A JPH0244235A (en) | 1988-08-03 | 1988-08-03 | Inspection of polarity for electronic component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0244235A true JPH0244235A (en) | 1990-02-14 |
Family
ID=16318576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63194077A Pending JPH0244235A (en) | 1988-08-03 | 1988-08-03 | Inspection of polarity for electronic component |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244235A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470702A (en) * | 2018-12-18 | 2019-03-15 | 精进电动科技（正定）有限公司 | A kind of polar device of detection alinco assembled |
| US11357149B2 (en) | 2015-05-21 | 2022-06-07 | Fuji Corporation | Component orientation determination data creation device and component orientation determination data creation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6176903A (en) * | 1984-09-21 | 1986-04-19 | Fujitsu Ltd | Parts inspection equipment |
| JPS62261050A (en) * | 1986-05-07 | 1987-11-13 | Omron Tateisi Electronics Co | Printed circuit board inspecting device |
-
1988
- 1988-08-03 JP JP63194077A patent/JPH0244235A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6176903A (en) * | 1984-09-21 | 1986-04-19 | Fujitsu Ltd | Parts inspection equipment |
| JPS62261050A (en) * | 1986-05-07 | 1987-11-13 | Omron Tateisi Electronics Co | Printed circuit board inspecting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11357149B2 (en) | 2015-05-21 | 2022-06-07 | Fuji Corporation | Component orientation determination data creation device and component orientation determination data creation method |
| CN109470702A (en) * | 2018-12-18 | 2019-03-15 | 精进电动科技（正定）有限公司 | A kind of polar device of detection alinco assembled |
| CN109470702B (en) * | 2018-12-18 | 2024-02-23 | 精进电动科技（正定）有限公司 | Device for detecting assembly polarity of magnetic steel |
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