JP2687854B2 - Method for detecting cutting margin of metal-clad laminate and its detection device - Google Patents
Method for detecting cutting margin of metal-clad laminate and its detection deviceInfo
- Publication number
- JP2687854B2 JP2687854B2 JP5293231A JP29323193A JP2687854B2 JP 2687854 B2 JP2687854 B2 JP 2687854B2 JP 5293231 A JP5293231 A JP 5293231A JP 29323193 A JP29323193 A JP 29323193A JP 2687854 B2 JP2687854 B2 JP 2687854B2
- Authority
- JP
- Japan
- Prior art keywords
- image
- laminated plate
- processing device
- projection distribution
- cameras
- 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
- 238000000034 method Methods 0.000 title claims description 13
- 238000001514 detection method Methods 0.000 title claims description 3
- 229920005989 resin Polymers 0.000 claims description 36
- 239000011347 resin Substances 0.000 claims description 36
- 239000004744 fabric Substances 0.000 claims description 19
- 239000011888 foil Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 238000003384 imaging method Methods 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000011889 copper foil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Landscapes
- Control Of Cutting Processes (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、表面が金属箔である積
層板の切断しろ検出方法及びこの方法を実施するための
切断しろ検出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 method for detecting a cutting margin of a laminated plate whose surface is a metal foil and a cutting margin detecting apparatus for carrying out this method.
【０００２】[0002]
【従来の技術】従来、積層板は、たとえばガラス布など
の基材にエポキシ樹脂などの樹脂ワニスを含浸して乾燥
することによってレジンクロスを作製し、このレジンク
ロスを所要枚数重ね、銅箔などの金属箔をレジンクロス
の片側、または両側に重ね、鏡面板の間にそれらを挟
み、その複数組を一対の熱盤の間に設置し、加熱加圧成
形することによって得られる。しかし、加熱加圧成形す
ると、レジンクロスに含浸した樹脂が端面より流れる樹
脂流れが発生し、流れ出した樹脂が鏡面板に付着するこ
とがあった。鏡面板に樹脂が付着すると、積層板を鏡面
板からはずすのが困難になるうえ、再度その鏡面板を使
用したときに樹脂が付着していると、打こんの発生原因
となっていた。よって、流れ出した樹脂を鏡面板に到達
させないために、金属箔（９）の縦と横の寸法をレジン
クロス（１０）のその寸法より大きくして使用してい
た。その形状は、積層板（５）の表面の金属箔を剥がす
と、図３に示すものである。このような積層板（５）を
プリント配線板として使用するには、樹脂流れ（８）が
存在する部分は使用に供し得ず、切断する必要があっ
た。切断位置を決定する方法として、積層板の外形をＴ
Ｖカメラを用いて撮像し、切断位置を決定する方法があ
ったが、樹脂流れが発生すると切断位置が移動し信頼性
に欠けるものであった。2. Description of the Related Art Conventionally, for a laminated plate, a resin cloth is produced by impregnating a base material such as glass cloth with a resin varnish such as epoxy resin and drying the resin cloth. It is obtained by stacking the metal foil of (1) on one side or both sides of a resin cloth, sandwiching them between mirror-finished plates, installing a plurality of sets between a pair of hot plates, and heat-pressing. However, when heat and pressure molding is performed, a resin flow impregnated in the resin cloth flows from the end surface, and the resin that flows out may adhere to the mirror surface plate. If the resin adheres to the mirror surface plate, it becomes difficult to remove the laminated plate from the mirror surface plate, and if the resin adheres when the mirror surface plate is used again, it has been a cause of hammering. Therefore, in order to prevent the resin that has flowed out from reaching the mirror surface plate, the metal foil (9) is used by making the vertical and horizontal dimensions larger than those of the resin cloth (10). The shape is as shown in FIG. 3 when the metal foil on the surface of the laminated plate (5) is peeled off. In order to use such a laminated board (5) as a printed wiring board, the portion where the resin flow (8) exists could not be used and had to be cut. As a method of determining the cutting position, the outer shape of the laminated plate is T
There was a method of determining the cutting position by taking an image using a V camera, but when the resin flow occurred, the cutting position moved and it was unreliable.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上述の問題
を鑑みてなされたものであり、その目的とするところ
は、表面が金属箔である金属張り積層板の切断位置を、
ＴＶカメラとコンピュータによる処理装置を利用して、
積層板の金属箔の表面を撮像した原画像からコンピュー
タ処理を行い、切断代検出の信頼性が高い積層板の切断
代検出方法と積層板の切断代検出装置を提供することに
ある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to cut a cutting position of a metal-clad laminate whose surface is a metal foil.
Utilizing a processing unit consisting of a TV camera and a computer,
It is an object of the present invention to provide a method for detecting a cutting margin of a laminated plate and a device for detecting a cutting margin of the laminated plate, which have high reliability in detecting the cutting margin by performing computer processing from an original image obtained by imaging the surface of the metal foil of the laminated plate.
【０００４】[0004]
【課題を解決するための手段】本発明の請求項１に係る
積層板の切断代検出方法は、硬化したレジンクロスが多
数枚一体に重なった金属張り積層板（５）の一辺に一定
間隔をあけて設置した少なくとも２台のＴＶカメラ
（１）（２）で上方より積層板（５）の端部を撮像し、
各々のＴＶカメラ（１）（２）の撮像によって得られた
積層板（５）の端部の画像を原画像（６）とし、該原画
像（６）の濃淡画像を画像処理装置（３）で微分処理し
て微分画像（７）を得、得られた微分画像（７）に対し
積層板（５）の内側より端部に向かって走査した投影分
布処理装置（４）で、投影分布曲線を得、該投影分布曲
線の最初に現れる変曲点を金属箔下のレジンクロスの切
断位置とすることを特徴とする。A method for detecting a cutting margin of a laminated plate according to claim 1 of the present invention is such that a fixed interval is provided on one side of a metal-clad laminated plate (5) in which a plurality of cured resin cloths are integrally laminated. At least two TV cameras (1) and (2) installed apart from each other image the end of the laminated plate (5) from above,
An image of the end portion of the laminated plate (5) obtained by each of the TV cameras (1) and (2) is taken as an original image (6), and a grayscale image of the original image (6) is used as an image processing device (3). The differential image (7) is obtained by performing a differential process with, and the obtained differential image (7) is scanned from the inside of the laminated plate (5) toward the end by the projection distribution processing device (4). And the inflection point that appears first in the projected distribution curve is the cutting position of the resin cloth under the metal foil.
【０００５】また、本発明の請求項２に係る積層板の切
断代検出装置は、少なくとも２台のＴＶカメラ（１）
（２）と、ＴＶカメラ（１）（２）の撮像によって得ら
れた原画像（６）を微分処理し、微分画像（７）を得る
画像処理装置（３）と、画像処理装置（３）で得られた
微分画像（７）から投影分布曲線を求める投影分布処理
装置（４）とからとから構成されることを特徴とする。The cutting margin detecting device for a laminated board according to claim 2 of the present invention is at least two TV cameras (1).
(2) and an image processing device (3) that obtains a differential image (7) by differentiating the original image (6) obtained by the TV cameras (1) and (2), and the image processing device (3). And a projection distribution processing device (4) for obtaining a projection distribution curve from the differential image (7) obtained in (4).
【０００６】[0006]
【作用】本発明の請求項１に係る積層板の切断代検出方
法によると、硬化したレジンクロスが多数枚一体に重な
った金属張り積層板の端部を、ＴＶカメラで撮像し、そ
の原画像を画像処理装置で微分処理し、さらに投影分布
処理装置によりを行うので、金属箔の表面に現れる表面
形状の微小な変化でも、投影分布処理により表面形状の
変化の積算された結果を得るので、金属箔の下に位置す
るレジンクロスの端部を認識することができる。また、
投影分布処理は積層板の中心側より端部に向かって走査
し、変曲点を求めているので、樹脂流れが生じても、樹
脂流れによる金属箔の表面の変化を排除することができ
る。According to the method of detecting the cutting margin of the laminated plate according to the first aspect of the present invention, the end portion of the metal-clad laminated plate on which a plurality of cured resin cloths are integrally laminated is imaged by the TV camera, and the original image thereof is obtained. Differentiate the image with an image processing device, and further perform with a projection distribution processing device, so even if the surface shape changes minutely on the surface of the metal foil, it is possible to obtain the integrated result of the surface shape changes by the projection distribution processing. The end of the resin cloth located under the metal foil can be recognized. Also,
In the projection distribution process, the inflection point is obtained by scanning from the center side of the laminated plate toward the end, so that even if a resin flow occurs, the change in the surface of the metal foil due to the resin flow can be eliminated.
【０００７】また、本発明の請求項２に係る積層板の切
断代ろ検出装置によると、少なくとも２台のＴＶカメラ
と、ＴＶカメラの撮像によって得られた原画像を微分処
理し微分画像を得る画像処理装置と、画像処理装置で得
られた微分画像より投影分布曲線を求める投影分布処理
装置より構成されるため、硬化したレジンクロスが多数
枚一体に重なった金属張り積層板の端部を上記ＴＶカメ
ラで撮像し、撮像によって得られた原画像を微分処理
し、さらに投影分布曲線を求めることができる。Further, according to the cutting margin detecting device for a laminated plate according to the second aspect of the present invention, at least two TV cameras and the original image obtained by the image pickup by the TV cameras are differentiated to obtain a differential image. Since it is composed of an image processing device and a projection distribution processing device that obtains a projection distribution curve from a differential image obtained by the image processing device, the end portion of the metal-clad laminated plate in which a plurality of cured resin cloths are integrally laminated is described above. A projection distribution curve can be obtained by taking an image with a TV camera and differentiating the original image obtained by the image pickup.
【０００８】以下、本発明の実施例を添付した図面に沿
って詳細に説明する。Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
【０００９】[0009]
【実施例】図１は本発明に係る積層板の切断代検出装置
の斜視図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a cutting margin detecting device for laminated plates according to the present invention.
【００１０】図１に示す如く、本発明に係る積層板の切
断代検出装置は、積層板の一辺の端部上方に位置するＣ
ＣＤカメラからなるＴＶカメラ（１）（２）と、画像処
理装置（３）と、投影分布処理装置（４）とから構成さ
れる。As shown in FIG. 1, the cutting margin detecting apparatus for a laminated plate according to the present invention is located at a position C above one end of the laminated plate.
It is composed of TV cameras (1) and (2) consisting of CD cameras, an image processing device (3), and a projection distribution processing device (4).
【００１１】このように構成された積層板の切断代検出
装置の動作を図１を引用しながら説明する。The operation of the cutting margin detecting device for a laminated board having the above structure will be described with reference to FIG.
【００１２】ＴＶカメラ（１）（２）は、銅箔の下が図
３に示されているような形状を有する両面銅張り積層板
（５）の一辺に一定の間隔を保ち設置されている。ま
ず、このＴＶカメラ（１）（２）により積層板（５）の
端部を撮像し画像処理装置（３）に記憶する。撮像した
原画像（６）は、図２に示す如く２５６階調の濃淡画像
で、主に明部は積層板（５）の中央側で、暗部は端面側
となる。ここで、原画像（６）に明部と暗部が生じ、そ
の境界が波状になる理由は、レジンクロスが存在すると
ころは表面の銅箔が平らになり、レジンクロスが存在し
ないところは表面の銅箔にくぼみが生じるため、光の陰
影により明部と暗部が生じる、また、図３に示す如く、
レジンクロス端部より樹脂流れ（８）が生じ、上下の銅
箔の間にその樹脂が流れ硬化するために、明部と暗部の
境界が波状になる。The TV cameras (1) and (2) are installed at regular intervals on one side of the double-sided copper-clad laminate (5) having a shape as shown in FIG. 3 under the copper foil. . First, the TV camera (1) (2) captures an image of the end of the laminate (5) and stores it in the image processing device (3). The picked-up original image (6) is a grayscale image with 256 gradations as shown in FIG. 2, and the light part is mainly on the center side of the laminated plate (5) and the dark part is on the end face side. Here, the light image and the dark image appear in the original image (6), and the reason why the boundary becomes wavy is that the copper foil on the surface is flat where the resin cloth is present, and the surface is where the resin cloth is not present. Since the copper foil has depressions, light shadows produce bright and dark areas. As shown in FIG.
A resin flow (8) is generated from the end portion of the resin cloth, and the resin flows between the upper and lower copper foils and hardens, so that the boundary between the light portion and the dark portion becomes wavy.
【００１３】画像処理装置（３）では、コンピュータに
より原画像（６）を微分処理し、原画像（６）の明部と
暗部の境界部分を強調する。微分処理により得られた微
分画像（７）は、図４の如き、２値化画像で、その画像
データは投影分布処理装置（４）に転送される。投影分
布処理装置（４）に転送された微分画像（７）は、コン
ピュータにより積層板（５）の中央側より端面側に向か
って、つまり、図４に示す微分画像（７）の上端より下
端に向かって走査され、投影分布曲線が求められる。投
影分布曲線は、図４に示す破線（Ｂ）を上述のように走
査し、破線（Ｂ）上の２値画像の１（図では黒色のカ
所）を積算して求められ、その結果は、線グラフ（Ｃ）
となる。図４で線グラフ（Ｃ）は、右になるほど２値画
像の積算量が多いことを示す。この投影分布曲線の線グ
ラフ（Ｃ）を画面内の上側から順次変曲点の有無を確認
して行き、最初に現れた変曲点をレジンクロスの端部の
位置とする。したがって、図４では、Ｄ点（ｘ１，ｙ
１）がレジンクロスの端部の位置となる。ここで、積層
板（５）の長手方向をＸ軸、幅方向をＹ軸とする。In the image processing device (3), the original image (6) is differentiated by a computer to emphasize the boundary portion between the bright portion and the dark portion of the original image (6). The differential image (7) obtained by the differential processing is a binarized image as shown in FIG. 4, and its image data is transferred to the projection distribution processing device (4). The differential image (7) transferred to the projection distribution processing device (4) is directed from the center side of the laminated plate (5) toward the end face side by the computer, that is, from the upper end to the lower end of the differential image (7) shown in FIG. And a projection distribution curve is obtained. The projection distribution curve is obtained by scanning the broken line (B) shown in FIG. 4 as described above and integrating 1 (black portion in the figure) of the binary image on the broken line (B), and the result is Line graph (C)
Becomes The line graph (C) in FIG. 4 indicates that the right side has a larger amount of integration of the binary image. The line graph (C) of this projection distribution curve is sequentially checked from the upper side in the screen for the presence or absence of an inflection point, and the first inflection point is taken as the position of the end of the resin cloth. Therefore, in FIG. 4, point D (x1, y
1) is the position of the end of the resin cloth. Here, the longitudinal direction of the laminate (5) is the X axis and the width direction is the Y axis.
【００１４】この方法によると、積層板（５）の端部に
樹脂流れ（８）が在っても無くても、積層板（５）の中
央側より走査するので、確実にレジンクロスの端部の位
置を見つけることができる。According to this method, scanning is performed from the center side of the laminated plate (5) regardless of the presence or absence of the resin flow (8) at the end of the laminated plate (5). You can find the location of the department.
【００１５】以下、同様にして、ＴＶカメラ（２）によ
るレジンクロスの端部の位置Ｅ点（ｘ２，ｙ２）を求め
る。ＴＶカメラ（１）、ＴＶカメラ（２）のＸ座標、ｘ
１、ｘ２はカメラ設置時に決まる画像の中心座標であ
る。In the same manner, the position E point (x2, y2) at the end of the resin cloth by the TV camera (2) is obtained in the same manner. X coordinate of TV camera (1) and TV camera (2), x
1 and x2 are the center coordinates of the image determined when the camera is installed.
【００１６】次に、Ｄ点（ｘ１，ｙ１）、Ｅ点（ｘ２，
ｙ２）の２点を結びレジンクロスの端面の位置（破線
（Ａ１））を求める。しかし、図２で示す如く、破線
（Ａ１）は、レジンクロスの端面と同じ位置になるた
め、端面でレジンクロスの解繊が発生し、製品として実
際に切断する位置は破線（Ａ１）より一定寸法内側に入
った所にあたる破線（Ａ２）とし、常に信頼性のある切
断代の位置を得ることができる。Next, point D (x1, y1) and point E (x2, x2
The position of the end surface of the resin cloth (broken line (A1)) is obtained by connecting the two points of y2). However, as shown in FIG. 2, the broken line (A1) is located at the same position as the end surface of the resin cloth, so that the defibration of the resin cloth occurs at the end surface, and the actual cutting position of the product is more constant than the broken line (A1). It is possible to always obtain a reliable cutting margin position by setting a broken line (A2) that is inside the dimension.
【００１７】[0017]
【発明の効果】本発明の積層板の切断代検出方法及びそ
の検出装置により積層板の端面の位置を正確に認識し、
切断代を検出することができる。The method for detecting the cutting margin of the laminated plate and the detecting device for the laminated plate of the present invention accurately recognize the position of the end surface of the laminated plate,
The cutting allowance can be detected.
【図１】本発明の実施例に係る積層板の切断代検出装置
の回路図を含む斜視図である。FIG. 1 is a perspective view including a circuit diagram of a cutting margin detecting device for laminated plates according to an embodiment of the present invention.
【図２】本発明の実施例に係るＴＶにより撮像した原画
像である。FIG. 2 is an original image captured by the TV according to the embodiment of the present invention.
【図３】本発明の検出対象となる積層板の斜視図であ
る。FIG. 3 is a perspective view of a laminated plate which is a detection target of the present invention.
【図４】本発明の実施例に係る微分画像及び投影分布処
理図である。FIG. 4 is a differential image and projection distribution processing diagram according to the embodiment of the present invention.
１ ＴＶカメラ ２ ＴＶカメラ ３ 画像処理装置 ４ 投影分布処理装置 ５ 積層板 ６ 原画像 ７ 微分画像 ８ 樹脂流れ ９ 金属箔 １０ レジンクロス 1 TV camera 2 TV camera 3 Image processing device 4 Projection distribution processing device 5 Laminated plate 6 Original image 7 Differential image 8 Resin flow 9 Metal foil 10 Resin cloth
Claims (2)
なった金属張り積層板（５）の一辺に一定間隔をあけて
設置した少なくとも２台のＴＶカメラ（１）（２）で上
方より積層板（５）の端部を撮像し、各々のＴＶカメラ
（１）（２）の撮像によって得られた積層板（５）の端
部の画像を原画像（６）とし、該原画像（６）の濃淡画
像を画像処理装置（３）で微分処理して微分画像（７）
を得、得られた微分画像（７）に対し積層板（５）の内
側より端部に向かって走査した投影分布処理装置（４）
で、投影分布曲線を得、該投影分布曲線の最初に現れる
変曲点を金属箔下のレジンクロスの切断位置とすること
を特徴とする金属張り積層板の切断代検出方法。1. A laminate comprising at least two TV cameras (1) (2) installed at regular intervals on one side of a metal-clad laminate (5) in which a plurality of cured resin cloths are integrally laminated. An image of the edge of the laminated plate (5) obtained by imaging the edges of (5) and obtained by each of the TV cameras (1) and (2) is used as an original image (6), and the original image (6) is obtained. Differentiated image (7) by differentiating the grayscale image of
A projection distribution processing device (4) in which the obtained differential image (7) is scanned from the inside of the laminated plate (5) toward the end.
A method for detecting a cutting margin of a metal-clad laminate, wherein a projection distribution curve is obtained, and an inflection point that appears first in the projection distribution curve is set as a cutting position of a resin cloth under a metal foil.
（２）と、ＴＶカメラ（１）（２）の撮像によって得ら
れた原画像（６）を微分処理し、微分画像（７）を得る
画像処理装置（３）と、画像処理装置（３）で得られた
微分画像（７）より投影分布曲線を求める投影分布処理
装置（４）とから構成される積層板の切断代検出装置。2. At least two TV cameras (1)
(2) and an image processing device (3) that obtains a differential image (7) by differentiating the original image (6) obtained by the TV cameras (1) and (2), and the image processing device (3). A cutting allowance detection device for a laminated plate, which comprises a projection distribution processing device (4) for obtaining a projection distribution curve from the differential image (7) obtained in (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5293231A JP2687854B2 (en) | 1993-11-24 | 1993-11-24 | Method for detecting cutting margin of metal-clad laminate and its detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5293231A JP2687854B2 (en) | 1993-11-24 | 1993-11-24 | Method for detecting cutting margin of metal-clad laminate and its detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07136988A JPH07136988A (en) | 1995-05-30 |
| JP2687854B2 true JP2687854B2 (en) | 1997-12-08 |
Family
ID=17792130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5293231A Expired - Lifetime JP2687854B2 (en) | 1993-11-24 | 1993-11-24 | Method for detecting cutting margin of metal-clad laminate and its detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2687854B2 (en) |
-
1993
- 1993-11-24 JP JP5293231A patent/JP2687854B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07136988A (en) | 1995-05-30 |
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