JPH0543416Y2 - - Google Patents
Info
- Publication number
- JPH0543416Y2 JPH0543416Y2 JP7465688U JP7465688U JPH0543416Y2 JP H0543416 Y2 JPH0543416 Y2 JP H0543416Y2 JP 7465688 U JP7465688 U JP 7465688U JP 7465688 U JP7465688 U JP 7465688U JP H0543416 Y2 JPH0543416 Y2 JP H0543416Y2
- Authority
- JP
- Japan
- Prior art keywords
- camera
- circuit board
- printed circuit
- inspected
- cylindrical body
- 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 - Lifetime
Links
- 238000007689 inspection Methods 0.000 claims description 48
- 230000003287 optical effect Effects 0.000 claims description 40
- 239000000523 sample Substances 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 239000013307 optical fiber Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000005286 illumination Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Description
【考案の詳細な説明】
[産業上の利用分野]
この考案はプリント基板のパターンの導通・短
絡等を検査するプリント基板検査装置に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a printed circuit board inspection device that inspects patterns on a printed circuit board for continuity, short circuits, etc.
さらにこの考案はプリント基板上特に2箇所に
設けた画像認識用マークまたはパターンを2個の
光学カメラによつて位置検出し、その後治具に設
けた多数のスプリングプローブによつて被検査プ
リント基板を検査するに当り治具とプリント基板
の位置関係を検出データに基づいて微調整する型
の検査装置に関する。 Furthermore, this idea uses two optical cameras to detect the positions of image recognition marks or patterns provided at two locations on the printed circuit board, and then detects the position of the printed circuit board to be inspected using a large number of spring probes installed on a jig. The present invention relates to a type of inspection device that finely adjusts the positional relationship between a jig and a printed circuit board based on detection data during inspection.
[従来の技術]
従来のプリント基板検査装置は例えば第4図の
様に構成され、例えばアクリルの厚板等に多数の
スプリングプローブ32を取付け正確な位置に保
持されている上側検査治具31、またこの上側検
査治具31に対して正確な再現性をもつて上下移
動できる上下動装置13に取付けたX−Y−θ可
動テーブル1、その上に固定された下側位置規定
用検査治具15を有し、それの系合ピンによつて
被検査プリント基板20を位置決め固定してその
上面に設けられている被検査パターン22をスプ
リングプローブ32によつて検査するものであ
る。[Prior Art] A conventional printed circuit board inspection apparatus is configured as shown in FIG. 4, for example, and includes an upper inspection jig 31 in which a large number of spring probes 32 are attached to, for example, a thick acrylic plate and held at precise positions; In addition, an X-Y-θ movable table 1 is attached to a vertical movement device 13 that can move up and down with accurate reproducibility with respect to the upper inspection jig 31, and a lower position defining inspection jig is fixed on the table 1. 15, the printed circuit board 20 to be inspected is positioned and fixed by the mating pin thereof, and the pattern 22 to be inspected provided on the upper surface thereof is inspected by the spring probe 32.
[考案が解決しようとする課題]
このようなプリント基板検査装置においてはプ
リント基板の配線ワイヤリングの間隔が0.5mm間
隔程度であるから、プリント基板20の下側位置
規定用検査治具15上への取付け誤差が約0.3mm
以上生ずると正しく作られている被検査プリント
基板であつても配線切断あるいはパターン不良と
同様の検査結果が生じる。このため従来は、検査
治具15上の位置決め基準ピン16,16に人が
目視により被検査プリント基板を正確にセツトし
かつそのセツト状態を確認しつつ導通短絡検査を
するということが必要であつた。[Problem to be solved by the invention] In such a printed circuit board inspection device, since the intervals between the wiring wirings of the printed circuit board are approximately 0.5 mm, it is difficult to place the printed circuit board 20 on the inspection jig 15 for determining the lower position of the printed circuit board 20. Installation error is approximately 0.3mm
If the above occurs, even if the printed circuit board to be inspected is manufactured correctly, the same inspection result as wiring disconnection or pattern defect will occur. For this reason, conventionally, it has been necessary for a person to visually visually set the printed circuit board to be inspected accurately on the positioning reference pins 16, 16 on the inspection jig 15, and to perform continuity and short circuit inspection while checking the set state. Ta.
さらにこのような従来例においては数枚ないし
数十枚の被検査プリント基板の検査を行つた後下
側位置規定用検査治具15の位置及びX−Y−θ
可動テーブル1が上側検査治具31に対して正確
な位置関係にあるかどうかを検査し、それらの位
置関係に狂いが生じている場合には再微調整を行
う必要があつた。このような従来の装置において
は、例えば被検査プリント基板の装着載置が前記
の約0.3mm以上の位置誤差を生じた場合には、プ
リント基板が良品であつても不良品と判定され、
その場合には被検査プリント基板は一度後退し再
び検査位置に載置され再びスプリングプローブ3
2,32……により検査を繰り返して受ける。こ
のためプリント基板の表面のワイヤリングパター
ンはスプリングプローブ等の接触子により検査パ
ターンの表面にいくつもの傷がつけられるという
問題点があつた。 Furthermore, in such a conventional example, the position of the inspection jig 15 for defining the rear lower position and the X-Y-θ
It was necessary to inspect whether the movable table 1 was in an accurate positional relationship with the upper inspection jig 31, and to perform fine adjustment again if the positional relationship was out of order. In such conventional devices, for example, if the printed circuit board to be inspected is mounted and placed with a positional error of approximately 0.3 mm or more, the printed circuit board is determined to be defective even if it is a good product.
In that case, the printed circuit board to be inspected is once moved back, placed in the inspection position again, and then the spring probe 3 is placed again.
2, 32... Repeat the test. For this reason, the wiring pattern on the surface of the printed circuit board has a problem in that the surface of the test pattern is scratched by contacts such as spring probes.
さらに第4図において仮想線で示したように複
数の光学カメラ40,40をアーム49,49に
よつてそれぞれ移動可能に上側検査治具31の上
部に設け、この光学カメラ40,40によつて上
側検査治具31に設けた開口部39,39を通し
てその下にある被検査プリント基板20のアライ
ンメント用マーク23,23の位置を検出しそれ
によつて上側検査治具31に対する被検査プリン
ト基板20の位置のずれを検出し、その検出デー
タに基づいてX−Y−θ可動テーブル1を微調整
して被検査プリント基板20の位置のずれを補正
するようにした、可動型のアラインメントカメラ
を用いたプリント基板検査装置もあつた。このよ
うな可動型の光学カメラ40,40は上側検査治
具31に対して相対的に移動可能なアーム49,
49に取付けられているため、その光学カメラ4
0,40の位置自体に誤差を生ずる恐れがあり、
カメラアームにX−Y−θ可動機構を必要とする
ことはもとよりスプリングプローブの配線部が光
学カメラ40,40の光束に干渉する欠点があ
る。また可動アーム49,49によつて取付けら
れている光学カメラ40,40は例えばX−Y−
θ可動テーブル1の上下動を行う上下装置、ある
いは被検査プリント基板20の着脱装置の動きに
よる振動を受けて光学像による認識制度誤差が大
きく、さらに光学カメラ40,40がスプリング
プローブの配線より上を移動するように相当上の
方に設けられているため光学カメラ40,40に
外乱光が入るという欠点があつた。 Furthermore, as shown by imaginary lines in FIG. The positions of the alignment marks 23, 23 on the printed circuit board 20 to be inspected below are detected through the openings 39, 39 provided in the upper inspection jig 31, and thereby the alignment marks 23, 23 of the printed circuit board 20 to be inspected relative to the upper inspection jig 31 are detected. A movable alignment camera is used that detects a positional deviation and finely adjusts the X-Y-θ movable table 1 based on the detected data to correct the positional deviation of the printed circuit board 20 to be inspected. Printed circuit board inspection equipment was also installed. Such movable optical cameras 40, 40 include arms 49, which are movable relative to the upper inspection jig 31;
49, the optical camera 4
There is a possibility that an error may occur in the position of 0,40 itself,
Not only does the camera arm require an X-Y-θ movable mechanism, but it also has the disadvantage that the wiring portion of the spring probe interferes with the light beams of the optical cameras 40, 40. Further, the optical cameras 40, 40 attached by the movable arms 49, 49 are, for example,
θ The recognition precision error due to the optical image is large due to vibrations caused by the movement of the vertical device that moves the movable table 1 up and down, or the device that attaches and detaches the printed circuit board 20 to be inspected. Since the optical cameras 40, 40 are provided at a considerably higher position so as to be moved, there is a drawback that disturbance light enters the optical cameras 40, 40.
また他の従来例として光学カメラ40,40を
設けたアーム49′,49′を、上側治具の下で被
検査プリント基板20の上に手入させてプリント
基板20の位置確認をするものもあつた。しかし
この例でも上記従来例と殆ど同様の問題点があつ
た。 Another conventional example is one in which arms 49', 49' equipped with optical cameras 40, 40 are placed over the printed circuit board 20 to be inspected under an upper jig to confirm the position of the printed circuit board 20. It was hot. However, this example also had almost the same problems as the above-mentioned conventional example.
[課題を解決するための手段]
この考案は上述の従来のプリント基板検査装置
における上記の問題点を解決するために、被検査
プリント基板上のアラインメント用マークの光学
的に検出して認識データ出力を出すための光学カ
メラを、上側検査治具に埋込固定して設けた筒状
体に対して、すきまばめにより取付けるようにし
たものである。[Means for Solving the Problems] In order to solve the above-mentioned problems in the conventional printed circuit board inspection equipment, this invention optically detects alignment marks on the printed circuit board to be inspected and outputs recognition data. The optical camera for displaying the image is attached to a cylindrical body embedded and fixed in the upper inspection jig by a loose fit.
即ち本件の第1の考案のプリント基板検査装置
は次の要素を具備して構成される:
所定の多数の位置に被検査プリント基板検査用
スプリングプローブを有するとともにオプトエレ
クトロニクス的に被検査プリント基板の光像を検
出するカメラを所定位置に取付けられる上部治具
板、
上記の上部治具板に固着保持されたカメラ、
被検査プリント基板を上面に載置保持するべき
X−Y−θ可動テーブル、
上記のX−Y−θ可動テーブルを正確な位置再
現性をもつて上部治具板に押圧するべく上昇しま
た下降する上下動装置、
上記の上部治具板上に貫入埋設固着されたカメ
ラ保持用の筒状体であつて、その内面は上記カメ
ラの外筒をすきるばめ関係で保持する寸法に仕上
げられ、その筒面の一部にカメラの外筒に設けた
位置方向規制キーを受けれる溝を有し、その筒状
体上端縁面がカメラの外筒の高さ規制つばに当接
する高さ規制面をなしているところの、カメラ保
持用の筒状体。 That is, the printed circuit board inspection apparatus of the first invention of the present invention is constructed with the following elements: It has spring probes for inspecting the printed circuit board to be inspected at a plurality of predetermined positions, and also has spring probes for inspecting the printed circuit board to be inspected in an optoelectronic manner. An upper jig plate on which a camera for detecting an optical image is mounted at a predetermined position, a camera fixedly held on the upper jig plate, an X-Y-θ movable table on which a printed circuit board to be inspected is placed and held, A vertical movement device that ascends and descends to press the above-mentioned X-Y-θ movable table against the upper jig plate with accurate position repeatability, and a camera holder embedded and fixed on the above-mentioned upper jig plate. It is a cylindrical body for use, and its inner surface is finished with dimensions to hold the outer barrel of the camera in a clearance fit relationship, and a part of the cylindrical surface has a position/direction regulating key provided on the outer barrel of the camera. A cylindrical body for holding a camera, the cylindrical body having a groove for holding the camera, and the upper end edge surface of the cylindrical body forming a height regulating surface that comes into contact with a height regulating collar of an outer cylinder of the camera.
また本件の第2の考案のプリント基板検査装置
は次の要素を具備して構成される:
所定の多数の位置に被検査プリント基板検査用
スプリングプローブを有するとともにオプトエレ
クトロニクス的に被検査プリント基板の光像を検
出するカメラを所定位置に取付けられる上部治具
板、
被検査プリント基板を上面に載置保持するべき
X−Y−θ可動テーブル、
上記のX−Y−θ可動テーブルを正確な位置再
現性をもつて上部治具板に押圧するべく上昇しま
た下降する上下動装置、
上記の上部治具板上に貫入埋設固着されたカメ
ラ保持用の筒状体であつて、その内面は上記カメ
ラの外筒をすきまばめ関係で保持する寸法に仕上
げられ、その筒面の一部にカメラの外筒に設けた
位置方向規制キーを受けれる溝を有し、その筒状
体上端縁面がカメラの外筒の高さ規制つばに当接
する高さ規制面をなしているところの、カメラ保
持用の筒状体。 Further, the printed circuit board inspection apparatus of the second invention of the present invention is configured with the following elements: It has spring probes for inspecting the printed circuit board to be inspected at a number of predetermined positions, and also has an optoelectronic method for inspecting the printed circuit board to be inspected. An upper jig plate on which the camera that detects the optical image can be mounted in a predetermined position, an X-Y-θ movable table on which the printed circuit board to be inspected should be placed and held, and an accurate position for the X-Y-θ movable table. A vertical movement device that rises and descends to press against the upper jig plate with reproducibility, and a cylindrical body for holding a camera that is embedded and fixed on the upper jig plate, the inner surface of which is fixed to the upper jig plate. Finished with dimensions to hold the camera's outer barrel in a loose fit relationship, a part of the barrel surface has a groove that can receive the position and direction regulating key provided on the camera's outer barrel, and the upper edge surface of the tubular body A cylindrical body for holding a camera, which forms a height regulating surface that comes into contact with the height regulating collar of the camera's outer cylinder.
[作用]
上部治具板31に固定された筒状体34,34
にCCDカメラ等の光学カメラ40,40の鏡胴
41,41がすきまばめによつて正確な再現性を
もつて挿入され、しかもそのカメラレンズ鏡胴4
1,41に設けたキー47,47が上側検査治具
31に固着した筒状体34,34の溝341,3
41に挿入されこれによつて光学カメラ40,4
0の軸周りの角度位置が正確に規定される。[Function] Cylindrical bodies 34, 34 fixed to the upper jig plate 31
The lens barrels 41, 41 of optical cameras 40, 40 such as CCD cameras are inserted with accurate reproducibility by loose fit, and the camera lens barrels 4
Grooves 341, 3 of the cylindrical bodies 34, 34 where the keys 47, 47 provided in the cylindrical bodies 34, 34 are fixed to the upper inspection jig 31.
41, thereby optical cameras 40, 4
The angular position around the zero axis is precisely defined.
[実施例]
この考案の実施例を第1図ないし第3図に従つ
て説明する。[Example] An example of this invention will be described with reference to FIGS. 1 to 3.
上側検査治具31は装置基台のフレーム等に強
固にかつ正確に保持されたアクリルの厚板等に多
数のスプリングプローブ32,32を取付けたも
のである。また後述するようにこの上部検査治具
31に対して正確な再現性をもつて上下移動でき
る上下動装置が設けられ、それに取付けたX−Y
−θ可動テーブル1の上に下側位置規定用検査治
具15を固定しさらにそれによつて被検査プリン
ト基板20を固定するように構成してある。この
上側検査治具31には少なくとも2個の筒状体3
4,34が、その下端部をたとえばテーパー状に
研削した後上側検査治具31に設けた穴に圧貫入
されさらにその下端に接着剤を塗布して強固に固
定されている。 The upper inspection jig 31 has a large number of spring probes 32 attached to a thick acrylic plate or the like that is firmly and precisely held on the frame of the apparatus base. Further, as will be described later, a vertical movement device is provided that can move the upper inspection jig 31 up and down with accurate reproducibility, and an X-Y
A lower position defining inspection jig 15 is fixed on the -θ movable table 1, and the printed circuit board 20 to be inspected is fixed therewith. This upper inspection jig 31 includes at least two cylindrical bodies 3.
4 and 34 have their lower ends ground into a tapered shape, for example, and then are press-fitted into holes provided in the upper inspection jig 31, and are firmly fixed by applying adhesive to their lower ends.
第2図Bは上記の筒状体34の構造を示す。図
示のように筒状体34は下部349をわずかにテ
ーパー状に先細りとしまた上部にはキー溝341
が設けられこのキー溝の下部には連通溝342を
経て丸穴部343が設けられて、正確なキー溝の
寸法を常に保持しつつ、光学カメラ40のレンズ
鏡胴41が無理なく着脱できるようにしてある。
筒状体の内面345は精密に仕上げられている。
この筒状体34にはCCDカメラ等の光学カメラ
40の下部に設けられたレンズ鏡胴41がすきま
ばめの関係で挿入されるように、光学カメラの外
径が選ばれている。光学カメラ40のレンズ鏡胴
41の上部には光学カメラ40の高さ方向の位置
決めをするつば状体48が設けられまたつば状体
48の下面の一部にはレンズ鏡胴41から突出す
る形でキー47が設けられ、このキー47は前述
のキー溝341にすきまばめの関係で挿入される
ように幅を選ばれている。それによつてキー47
がキー溝341にはまることによつて光学カメラ
40はその光軸のまわりでの角度方向位置を正確
に規制される。また鏡胴41の下面には照明光を
伝送する光フアイバーの出力端(必要に応じて小
レンズを含む)45が対物レンズ49を取り巻く
形で多数設けられ、光フアイバーケーブル42を
通して送られてくる照明光によつて被検査プリン
ト基板20の上のマーク23を照射する。筒状体
34の上面348は上記つば48の下面と当接し
て光学カメラ40の高さ方向の位置決めを行う。 FIG. 2B shows the structure of the cylindrical body 34 described above. As shown in the figure, the cylindrical body 34 has a slightly tapered lower part 349 and a key groove 341 in the upper part.
A round hole 343 is provided at the bottom of this keyway through a communication groove 342 so that the lens barrel 41 of the optical camera 40 can be attached and detached without difficulty while always maintaining accurate keyway dimensions. It is set as.
The inner surface 345 of the cylindrical body is precisely finished.
The outer diameter of the optical camera 40 such as a CCD camera is selected so that a lens barrel 41 provided at the bottom of the optical camera 40 such as a CCD camera can be inserted into the cylindrical body 34 with a clearance fit. A collar-like body 48 for positioning the optical camera 40 in the height direction is provided on the upper part of the lens barrel 41 of the optical camera 40, and a part of the lower surface of the collar-like body 48 has a shape that projects from the lens barrel 41. A key 47 is provided, and the width of the key 47 is selected so that it can be inserted into the key groove 341 with a loose fit. Thereby key 47
By fitting into the keyway 341, the angular position of the optical camera 40 around its optical axis is precisely regulated. Further, on the lower surface of the lens barrel 41, a large number of output ends 45 of optical fibers (including small lenses as necessary) for transmitting illumination light are provided surrounding the objective lens 49, and the illumination light is sent through an optical fiber cable 42. The mark 23 on the printed circuit board 20 to be inspected is irradiated with the illumination light. The upper surface 348 of the cylindrical body 34 comes into contact with the lower surface of the collar 48 to position the optical camera 40 in the height direction.
第3図はこの考案のプリント基板検査装置の全
体のブロツクダイアグラムであり光学カメラ4
0,40からケーブル42,42によつて取り出
された検出データは信号ケーブル44,44を経
て画像処理コントローラ101に与えられる。画
像処理コントローラ101はその2つの光学カメ
ラからの入力データをデータ処理して、被検査プ
リント基板20上のマーク23,23が光学カメ
ラの視野の中心からずれている場合、そのずれ量
及びずれ方向に基づいてX−Y−θ可動テーブル
1を駆動するX−Y−θテーブルコントローラ1
02に必要な調整用の出力を与える。この出力に
よりX−Y−θ可動テーブル1は下側検査治具1
5をX方向、Y方向及びθ方向に微調整して被検
査プリント基板20をあるべき正しい位置に置
く。このようにして被検査プリント基板20が正
確な位置に載置された後、エアーシリンダ13等
の上下装置によつて正確な再現性をもつてX−Y
−θ可動テーブル1を上昇し被検査プリント基板
20の被検査パターンに上側検査治具31に設け
られた多数の検査プローブ32,32……の尖端
を当接させる。各スプリングプローブ32,32
……から得られた電気的信号は導通短絡検査器1
03に導かれ公知の手法によつて被検査プリント
基板20の導通短絡検査を行う。 Figure 3 is an overall block diagram of the printed circuit board inspection device of this invention.
Detection data taken out from 0 and 40 by cables 42 and 42 is given to the image processing controller 101 via signal cables 44 and 44. The image processing controller 101 processes the input data from the two optical cameras, and if the marks 23, 23 on the printed circuit board 20 to be inspected are shifted from the center of the field of view of the optical camera, the amount and direction of the shift are determined. An X-Y-θ table controller 1 that drives an X-Y-θ movable table 1 based on
02 with the necessary adjustment output. This output causes the X-Y-θ movable table 1 to move to the lower inspection jig 1.
5 in the X direction, Y direction, and θ direction to place the printed circuit board 20 to be inspected at the correct position. After the printed circuit board 20 to be inspected is placed at an accurate position in this manner, it is
-θ The movable table 1 is raised to bring the tips of a large number of test probes 32, 32, . . . provided on the upper test jig 31 into contact with the test pattern of the printed circuit board 20 to be tested. Each spring probe 32, 32
The electrical signal obtained from ...... is the continuity short circuit tester 1.
03, the printed circuit board 20 to be inspected is tested for continuity and short circuits using a known method.
[考案の効果]
この考案のプリント基板検査装置においてはプ
リント基板20の装着位置を検出するための2つ
またはそれ以上の光学カメラ40,40を、上側
検査治具31の面に強固にかつ高い精度をもつて
固着した筒状体34に、光学カメラ40,40の
レンズ鏡胴41,41をすきまばめによつて精度
よく取付けかつキー47をキー溝341に挿入し
た。このためこのカメラの光軸は振動等によつて
変化を生じることがなく、また多数回の被検査プ
リント基板の装着取り出しを重ねてもそれらの振
動によつてカメラの位置(3次元的)あるいはそ
の光軸の方向、あるいは光軸まわりの方向が変化
してマーカー23,23を検出したデータが誤差
を生じるようなことはない。[Effect of the invention] In the printed circuit board inspection apparatus of this invention, two or more optical cameras 40, 40 for detecting the mounting position of the printed circuit board 20 are mounted firmly and high on the surface of the upper inspection jig 31. The lens barrels 41, 41 of the optical cameras 40, 40 were attached to the accurately fixed cylindrical body 34 by a clearance fit, and the key 47 was inserted into the keyway 341. Therefore, the optical axis of this camera does not change due to vibrations, etc., and even if the printed circuit board to be inspected is mounted and removed many times, the camera's position (three-dimensional) or There is no possibility that the data obtained by detecting the markers 23, 23 will be erroneous due to a change in the direction of the optical axis or the direction around the optical axis.
また光学カメラのレンズ鏡胴41の先端及びそ
の下面に設けられた照明用光フアイバー出力端4
5が上側検査治具31の下面近くに存在するた
め、光学カメラ40,40の視野内にスプリング
プローブ32,32の配線が存在することによる
無用の反射光の照射を受けることがなく、また照
明も適性強力な照明が鏡胴の下端部から行われ
て、外乱光に対して充分の強度で照明するため、
外乱光による誤り検出データを生じる恐れも全く
ない。 Also, an illumination optical fiber output end 4 provided at the tip and bottom surface of the lens barrel 41 of the optical camera.
5 is located near the bottom surface of the upper inspection jig 31, the spring probes 32, 32 are not exposed to unnecessary reflected light due to the wiring of the spring probes 32, 32 being within the field of view of the optical cameras 40, 40, and the illumination Powerful illumination is performed from the bottom end of the lens barrel, and the illumination is strong enough to counter ambient light.
There is no possibility that erroneous detection data will be generated due to disturbance light.
また光学カメラ40,40は筒状体34を介し
て直接的に上側検査治具31に固着されるため、
従来のX−Y可動アームに光学カメラを取付けて
いた場合のような可動アームが不要となり、複雑
な機構が省略されてコストダウンされると共に、
X−Y可動アームの停止位置誤差による検出デー
タの誤差が入り込む恐れがなくなる。 Further, since the optical cameras 40, 40 are directly fixed to the upper inspection jig 31 via the cylindrical body 34,
This eliminates the need for a movable arm, which is required when an optical camera is attached to a conventional X-Y movable arm, and eliminates complicated mechanisms, reducing costs.
There is no possibility that an error in detection data due to an error in the stop position of the X-Y movable arm will be introduced.
光学カメラの対物レンズは上側検査治具31の
下面付近に装着することができるため、スプリン
グプローブ33,33と同様アラインメントマー
ク23,23との距離はわずかに10mm前後と身近
くすることができこのため誤差の位置検出ができ
る。 Since the objective lens of the optical camera can be mounted near the bottom surface of the upper inspection jig 31, the distance from the alignment marks 23, 23, like the spring probes 33, 33, can be kept close to the body, with the distance to the alignment marks 23, 23 being only around 10 mm. Therefore, the position of the error can be detected.
この装置によれば極めて正確に固定された光学
カメラ40,40により被検査プリント基板20
の取付け位置は正確に検出され、そのため従来の
プリント基板検査装置におけるように光学カメラ
による検出誤差のためにプリント基板の装着位置
が不正確に認識される恐れがない。したがつて良
品の被検査プリント基板であれば一度の検査でそ
のプリントパターン上にスプリングプローブの先
端が接触できる。このため従来装置の場合に多か
つた、被検査プリント基板の装着しなおしによる
複数回のスプリングプローブ接触による無用な多
数の接触傷の発生を防ぐことができ、検査時間も
著しく短縮できる。 According to this device, the printed circuit board 20 to be inspected is inspected by optical cameras 40, 40 which are fixed very accurately.
The mounting position of the printed circuit board is accurately detected, and therefore there is no possibility that the mounting position of the printed circuit board may be incorrectly recognized due to a detection error caused by an optical camera, unlike in conventional printed circuit board inspection equipment. Therefore, if the printed circuit board to be inspected is of good quality, the tip of the spring probe can come into contact with the printed pattern in one inspection. Therefore, it is possible to prevent a large number of unnecessary contact scratches caused by contacting the spring probe multiple times due to remounting of the printed circuit board to be inspected, which was common in the case of the conventional apparatus, and the inspection time can be significantly shortened.
さらに光学カメラを有せず目視及び手作業によ
る被検査プリント基板の位置調整をするような原
始的方法に比べて著しく検査能率が向上する。 Furthermore, the inspection efficiency is significantly improved compared to the primitive method of adjusting the position of the printed circuit board to be inspected visually and manually without using an optical camera.
第1図はこの考案を実施したプリント基板検査
装置の斜面図である。第2図A及び第2図Bはそ
れぞれこの考案のプリント基板検査装置の光学カ
メラ及びこれを上側検査治具に固着するための筒
状体の斜面図である。第3図は上記実施例の電気
的回路配置を関連部品と共に示すブロツクダイア
グラムである。第4図は従来のプリント基板検査
装置の例を示す斜面図である。
FIG. 1 is a perspective view of a printed circuit board inspection device implementing this invention. FIGS. 2A and 2B are perspective views of an optical camera of the printed circuit board inspection apparatus of this invention and a cylindrical body for fixing it to the upper inspection jig, respectively. FIG. 3 is a block diagram showing the electrical circuit arrangement of the above embodiment together with related parts. FIG. 4 is a perspective view showing an example of a conventional printed circuit board inspection device.
Claims (1)
用スプリングプローブを有するとともにオプト
エレクトロニクス的に被検査プリント基板の光
像を検出するカメラを所定位置に取付けられる
上部治具板、 上記の上部治具板に固着保持されたカメラ、 被検査プリント基板を上面に載置保持するべ
きX−Y−θ可動テーブル、 上記のX−Y−θ可動テーブルを正確な位置
再現性をもつて上部治具板に押圧するべく上昇
しまた下降する上下動装置、 上記の上部治具板上に貫入埋設固着されたカ
メラ保持用の筒状体であつて、その内面は上記
カメラの外筒をすきまばめ関係で保持する寸法
に仕上げられ、その筒面の一部にカメラのレン
ズ鏡胴に設けた位置方向規制キーを受けれる溝
を有し、その筒状体上端縁面がカメラのレンズ
鏡胴の高さ規制つばに当接する高さ規制面をな
しているところの、カメラ保持用の筒状体、 を具備してなるプリント基板検査装置。 (2) 所定の多数の位置に被検査プリント基板検査
用スプリングプローブを有するとともにオプト
エレクトロニクス的に被検査プリント基板の光
像を検出するカメラを所定位置に取付けられる
上部治具板、 被検査プリント基板を上面に載置保持するべ
きX−Y−θ可動テーブル、 上記のX−Y−θ可動テーブルを正確な位置
再現性をもつて上部治具板に押圧するべく上昇
しまた下降する上下動装置、 上記の上部治具板上に貫入埋設固着されたカ
メラ保持用の筒状体であつて、その内面は上記
カメラの外筒をすきまばめ関係で保持する寸法
に仕上げられ、その筒面の一部にカメラのレン
ズ鏡胴に設けた位置方向規制キーを受けれる溝
を有し、その筒状体上端縁面がカメラのレンズ
鏡胴の高さ規制つばに当接する高さ規制面をな
しているところの、カメラ保持用の筒状体、 を具備してなるプリント基板検査装置。 (3) 第1請求項又は第2請求項において、カメラ
のレンズ鏡胴の下面に被検査プリント基板を照
射するための光を伝送する光フアイバーの出力
端部を、対物レンズ開口部の周囲に環状に配置
したことを特徴とするプリント基板検査装置。 (4) 第1請求項又は第2請求項において、前記筒
状体のキー受入溝の下側にはさらに弾力付与用
の細幅の連通溝及びその下の拡大丸穴部を設け
たことを特徴とするプリント基板検査装置。[Claims for Utility Model Registration] (1) An upper part having spring probes for inspecting a printed circuit board to be inspected at a number of predetermined positions, and a camera for detecting an optical image of the printed circuit board to be inspected optoelectronically mounted at a predetermined position. A jig plate, a camera fixedly held on the above upper jig plate, an X-Y-θ movable table on which the printed circuit board to be inspected is to be placed and held, and an accurate positioning of the above-mentioned X-Y-θ movable table. A vertical movement device that rises and descends to press against the upper jig plate with reproducibility, and a cylindrical body for holding a camera that is embedded and fixed on the upper jig plate, the inner surface of which is fixed to the upper jig plate. It is sized to hold the camera's outer barrel in a loose fit relationship, and has a groove on a part of its barrel surface that can receive the position and direction regulating key provided on the camera's lens barrel, and the upper edge of the barrel. A printed circuit board inspection device comprising: a cylindrical body for holding a camera, the surface of which forms a height regulating surface that comes into contact with the height regulating collar of a camera lens barrel; (2) An upper jig plate having spring probes for inspecting the printed circuit board to be inspected at a number of predetermined positions and on which a camera for detecting an optical image of the printed circuit board to be inspected is mounted at a predetermined position, and a printed circuit board to be inspected. an X-Y-θ movable table to place and hold the X-Y-θ movable table on the upper surface, and a vertical movement device that ascends and descends to press the above-mentioned X-Y-θ movable table against the upper jig plate with accurate positional repeatability. , a cylindrical body for holding a camera that is embedded and fixed on the upper jig plate, the inner surface of which is finished to a dimension that holds the outer cylinder of the camera in a loose fit relationship, and the cylindrical surface of the body is A part of the cylindrical body has a groove that can receive the position and direction regulating key provided on the lens barrel of the camera, and the upper edge surface of the cylindrical body forms a height regulating surface that comes into contact with the height regulating collar of the lens barrel of the camera. A printed circuit board inspection device comprising: a cylindrical body for holding a camera; (3) In the first or second claim, the output end of the optical fiber that transmits light for irradiating the printed circuit board to be inspected onto the lower surface of the lens barrel of the camera is placed around the objective lens opening. A printed circuit board inspection device characterized by being arranged in a ring. (4) In the first claim or the second claim, it is provided that the lower side of the key receiving groove of the cylindrical body is further provided with a narrow communication groove for imparting elasticity and an enlarged round hole portion below the communication groove. Features of printed circuit board inspection equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7465688U JPH0543416Y2 (en) | 1988-06-03 | 1988-06-03 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7465688U JPH0543416Y2 (en) | 1988-06-03 | 1988-06-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01180780U JPH01180780U (en) | 1989-12-26 |
JPH0543416Y2 true JPH0543416Y2 (en) | 1993-11-01 |
Family
ID=31299758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7465688U Expired - Lifetime JPH0543416Y2 (en) | 1988-06-03 | 1988-06-03 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0543416Y2 (en) |
-
1988
- 1988-06-03 JP JP7465688U patent/JPH0543416Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH01180780U (en) | 1989-12-26 |
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