JP3592615B2 - Internal inspection equipment for goods - Google Patents

Internal inspection equipment for goods Download PDF

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Publication number
JP3592615B2
JP3592615B2 JP2000164200A JP2000164200A JP3592615B2 JP 3592615 B2 JP3592615 B2 JP 3592615B2 JP 2000164200 A JP2000164200 A JP 2000164200A JP 2000164200 A JP2000164200 A JP 2000164200A JP 3592615 B2 JP3592615 B2 JP 3592615B2
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Prior art keywords
inspected
article
concave portion
imaging
groove
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JP2001056299A (en
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充弘 南
規男 種田
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カネボウ株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は、医薬用のバイアル瓶のような中空の瓶形状の物品や、前記バイアル瓶のゴム栓等の微小物品であって、例えば一部を切り欠いた溝部を有する円筒状の物品であって溝部底面に微小な凹部を有する物品の表面検査装置に関するものである。
【0002】
【従来の技術】
従来、例えば、医療用のバイアル瓶やその瓶用のゴム栓は、医療用途であることから全品外観検査を行なう必要があった。しかし、その形状は円筒形であるばかりでなく、非常に複雑な形状を有するため目視にて実施することが多かった。特に円筒系であるがために全周の内面検査または溝部検査は人手による場合に多方向から観察しなければならず作業負荷が高かった。この負荷軽減のために自動検査も考えられたが、円筒形状の内面検査、特に溝部の下部に微小な凹部を有する場合には搬送しながらの自動検査は困難であった。特開平8−152417号公報にはリレーレンズを用いて円筒容器の内面をロータリー検査台上で検査する装置が開示されている。
【0003】
【発明が解決しようとする課題】
しかし、特開平8−152417号公報に開示されている装置では、ロータリー検査台上とはいえ一旦被検査物品を撮像機構に対して相対的に停止させる必要があり、装置が大型化するとともに処理能力が低くなる。また、かかる装置を用いない他の装置として、搬送路上で被検査物品を一旦停止させ、溝部に撮像カメラ先端部を装置を挿入しその位置で撮像カメラを自転させて撮像する装置がある。しかし、この場合であっても前述の公報記載の装置ほど大型化しないが、処理能力は向上しない。回転させずに複数の撮像カメラで画像を撮像する方法もあるが、映像信号の処理が複雑になり、装置価格が高騰する。さらに、微小な切欠部をファイバースコープで検査したのでは画素数に限界があり解像度が低いため検査精度が低く所望の検査基準を満たさない。
【0004】
そこで、本願発明は、上述の問題点を解決し、主として円筒形からなる複雑な形状の被検査物品の微小凹部の内面を、搬送コンベア上で高速に検査する安価な装置を提供することにある。
【0005】
【課題を解決するための手段】
本願発明の請求項1にかかる発明は、溝部底面に微小凹部を有する被検査物品の前記凹部の内面を搬送中に検査する装置であって、被検査物品の溝部の方向を揃えて搬送する搬送機構と、被検査物品の凹部内面からの反射光を撮像する撮像機構と、前記撮像機構の光軸の周囲に設けた照明機構と、前記撮像機構からの映像信号を処理する処理機構とから構成され、前記撮像機構は広角な視野角を有する画像伝送部を含んでなり、前記照明機構は前記画像伝送部を中心とした同心円上に均一に配置された光ファイバ束からなり、前記画像伝送部中心線と前記凹部中心線とが一致する位置にあり、前記画像伝送部の下端は溝部の凸部の間隙に配置されているものである検査装置である。
【0006】
【発明の実施の形態】
以下、本願発明の実施の形態の一について図面を用いて説明する。なお、図中同一符号は同一または相当部分を示す。また、今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。
【0007】
図1に本願発明にかかる検査装置(1)の全体構成図であって被検査物品(2)の搬送方向と直角をなす方向から示した図を示す。図1において被検査物品(2)は紙面の裏面から表面に向かって搬送されるものとする。また、図2に検査装置(1)の斜視図を示す。図2において被検査物品(2)は矢示Y方向に搬送されるものとする。
【0008】
図1および図2からわかるように、本願発明の検査装置(1)は、被検査物品(2)を搬送する搬送機構(3)と、被検査物品(2)の凹部内面(2e)からの反射光を撮像する撮像機構(20)と、前記凹部内面(2e)を照明する照明機構(10)と、前記撮像機構(20)の画像伝送部(21)および照明機構(10)の照射光伝達部(11)を収納する本体枠(30)と、前記撮像機構(20)からの映像信号を処理する処理機構(40)とから構成されるものである。なお、被検査物品(2)は、これに限定されないが、搬送方向に沿って溝部を形成する凸部(2d)を有し、その溝部底面に微小凹部(2e)を有するものである。
【0009】
また、搬送機構(3)では、図2からわかるように、搬送方向がランダムである被検査物品(2)は、方向規制ガイド(31)のガイド入り口部(31a)にて、ガイド入り口部(31a)付近に設置されたノズル(32)から噴射される圧空にて回転させられる。そして被検査物品(2)の凸部(2d)によって形成された溝部と方向規制ガイドの角度が一致することにより、被検査物品(2)は同一の方向で搬送される。
【0010】
保護ガイド(33)は、方向規制ガイド(31)と撮像機構(20)との間に同一直線上に設置され、その幅は被検査物品(2)の溝部の間隔より小さく、撮像機構(20)の本体枠(30)の幅より大きくしている。この保護ガイド(33)は、方向が正しく規制されていない被検査物品(2)が搬送された場合に、撮像機構(20)を保護する物である。
【0011】
また、前記本体枠(30)の断面図を図3に示す。図1から図3に示すように、本体枠(30)の外径は被検査物品(2)の溝部(凸部(2d)により形成された部分をいう。)の間隔より小さく、本体枠(30)の下端は凸部(2d)の間隙に配置されるものである。また、画像伝送部(21)中心線と前記凹部(2e)中心線とが一致する位置に設けられている。
【0012】
前記撮像機構(20)は、本体枠(30)に内蔵された画像伝送部(21)と2次元イメージセンサ(22)とを含んで構成され、画像伝送部(21)は、広角な視野角を有する広角レンズ(23)を最下端に有している。この視野角については、図4に示すように凹部の直径Wと本体枠(30)先端から被検査物品(2)まで距離Lとから、2tan−1(W/2L)度以上が好ましい。また、画像を伝送するレンズ群(24)、(25)、(26)を含んで構成されるものである。図4に反射光の光路(27)を示す。
【0013】
次に、2次元イメージセンサ(22)は、例えば公知の512画素×480画素のCCD素子を並べたものである。前記イメージセンサ(22)はその撮像レンズ(28)とともに、被検査物品(2)の微小凹部(2e)の内面が視野内に入るように、かつ、本実施の形態ではレンズを鉛直下向きになるように配設している。
【0014】
次に、照明機構(10)について説明する。照明機構(10)は、被検査物品(2)の微小凹部(2e)の内面を全周を均一に照明する複数の光ファイバを束ねた照明装置であり、被検査物品(2)の上方に光ファイバの照射端(11a)が複数ある。また、光ファイバの照射端(11a)から照射される光は、微小凹部(2e)の内面を十分照射できる角度となっている。白色光源であるハロゲンランプ(12)と、本体枠(30)に設けたコネクタ(14)と、前記光源(12)と前記コネクタ(14)とを接続する光ファイバ束(13)とから構成され、光ファイバ束(13)は本体枠(30)の内部においてその1本1本あるいは数本まとめて画像伝送部(21)を中心とした同心円上に均一に配置されている。図4に照射光の光路(15)を示す。
【0015】
次に、処理機構(40)について説明する。処理機構(40)は、撮像画像データを処理、判定するものであり、画像の特徴データを抽出する画像処理部、良品物品の特徴データを蓄えておくメモリ、良品物品と撮像画像の特徴を比較し良、不良を判定する判定部から構成される。
【0016】
次に、本願発明の検査装置(1)を用いて被検査物品(2)の微小凹部(2e)の内面の全周を検査する際の動作を説明する。
【0017】
まず、被検査物品(2)は、その方向を図2に示すような方向、すなわち凸部(2d)により形成される溝部を搬送方向と平行な方向に、搬送機構(3)である直線上のコンベアに載置されて検査装置(1)の位置まで矢示Y方向に搬送される。
【0018】
次いで、コンベア上の被検査物品(2)の検知手段、例えば光電センサ(図示しない)により、被検査物品(2)が検査装置(1)エリアに入ったことを検知し、その信号を処理機構(40)に入力する。処理機構(40)においては、前記光電センサからの信号を受けて撮像機構(20)で撮像した撮像画像を画像メモリに蓄積する。なお、搬送コンベアは間歇運転するものでも連続運転するものでも構わないが、処理能力向上のためには連続運転するほうが好ましい。
【0019】
撮像画像の一例を図5に示す。図5に示すように撮像機構(20)で撮影した2次元画像は、画面の中心に被検査物品(2)の凹部底面(2f)を上面から撮像した画像が現れ、その周囲に被検査物品(2)の凹部内面(2e)の全周の画像が円周上に現れる。これは、前述の装置の構成で説明したように、被検査物品(2)の凹部内面(2e)から出た反射光は、撮像機構(20)の広角レンズ(23)に入射し、入射光は画像伝送部(21)のレンズ群(24)、(25)、(26)により伝送されCCDイメージセンサのような2次元イメージセンサ(22)に到達し、図5に示すような画像が撮像されることによるものである。
【0020】
この撮像機構(20)における撮像画像を、A/Dコンバータにより256階調のデータに変換する。そして、予め設定しておいた領域に基づいて、全画素の中から凹部内面(2e)の部分の画像だけを抽出する。その抽出した画像の階調データに対して、予め設定しておいたしきい値との階調データの大小判別により判定し、被検査物品(2)の凹部(2e)の内周側面の汚れ、異物混入などの欠点を検出することができるものとなる。
【0021】
処理機構(40)にて被検査物品(2)の凹部(2e)の内周側面の検査が終わり、該検査結果として当該部分の表面に異常がある不良品は不良品排出工程に排出される。この工程は例えば空気ノズルとシュートとから構成されるもので、該不良品がシュート位置に来ると空気ノズルから圧縮空気を排出し、該不良品をシュートに導くものである。一方検査結果が正常であった被検査物品(2)に対してはかかる空気ノズルは作動せず、搬送コンベア上を次工程に進んで行くこととなる。
【0022】
【発明の効果】
本願発明の装置によれば、被検査物品を連続的に移動させながら、被検査物品の微小凹部内周面を1画像として撮像することができることとなる。従って、搬送工程途中に検査工程を組み込むことができ、かつ、高速に処理できることとなる。また、本願発明の検査装置により、被検査物品と非接触の状態を保持しつつ、必要な画像を撮像することができ、特段のハンドリング機構が不要であり装置が小型、安価であり、かつ高速に処理できることとなる。
【図面の簡単な説明】
【図1】本願発明にかかる検査装置の全体構成図である。
【図2】本願発明にかかる検査装置の斜視図である。
【図3】撮像機構の断面図である。
【図4】照射光および反射光の光路を示す図である。
【図5】撮像された画像の一例である。
【符号の説明】
1 検査装置
2 被検査物品
3 搬送機構
10 照明機構
20 撮像機構
40 処理機構
21 画像伝送部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hollow bottle-shaped article such as a vial for medicine and a micro article such as a rubber stopper of the vial, for example, a cylindrical article having a partially cut-out groove. The present invention relates to a surface inspection apparatus for an article having a minute concave portion on the bottom surface of a groove.
[0002]
[Prior art]
Conventionally, for example, a medical vial and a rubber stopper for the bottle have to be subjected to a visual inspection of all products since they are used for medical purposes. However, the shape is not only a cylindrical shape, but also has a very complicated shape, so that it is often performed visually. In particular, because of the cylindrical system, the inner surface inspection or groove inspection of the entire circumference must be observed from multiple directions when manually performed, and the work load is high. An automatic inspection was also considered to reduce the load, but it was difficult to inspect the inner surface of the cylinder, particularly when there is a minute concave portion below the groove, while transporting the inner surface. Japanese Patent Application Laid-Open No. 8-152417 discloses an apparatus for inspecting the inner surface of a cylindrical container on a rotary inspection table using a relay lens.
[0003]
[Problems to be solved by the invention]
However, in the apparatus disclosed in Japanese Patent Application Laid-Open No. 8-152417, it is necessary to temporarily stop the article to be inspected relative to the imaging mechanism, even though it is on the rotary inspection table. Ability is reduced. Further, as another apparatus that does not use such an apparatus, there is an apparatus that temporarily stops an article to be inspected on a transport path, inserts a tip of an imaging camera into a groove, rotates the imaging camera at that position, and performs imaging. However, even in this case, although the size is not as large as the apparatus described in the above-mentioned publication, the processing capacity is not improved. Although there is a method of taking an image with a plurality of imaging cameras without rotating the image, the processing of the video signal becomes complicated, and the price of the apparatus rises. Furthermore, if a small notch is inspected with a fiberscope, the number of pixels is limited and the resolution is low, so that the inspection accuracy is low and the desired inspection standard is not satisfied.
[0004]
Accordingly, the present invention is to solve the above-mentioned problems and to provide an inexpensive apparatus for inspecting the inner surface of a minute concave portion of an article to be inspected having a complicated shape mainly of a cylindrical shape at a high speed on a conveyor. .
[0005]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention is an apparatus for inspecting an inner surface of a concave portion of an inspected article having a minute concave portion on the bottom surface of the concave portion while transporting the concave portion, and transporting the inspected article with the grooves aligned in the same direction. A mechanism, an imaging mechanism for imaging reflected light from the inner surface of the concave portion of the inspected article, an illumination mechanism provided around an optical axis of the imaging mechanism, and a processing mechanism for processing a video signal from the imaging mechanism. The imaging mechanism includes an image transmission unit having a wide viewing angle, and the illumination mechanism includes an optical fiber bundle uniformly arranged on a concentric circle centered on the image transmission unit. position near the center line and said recess center line coincides is, the lower end of the image transmitting unit is der Ru inspection device that is placed in the gap of the convex portion of the groove.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding parts. The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive.
[0007]
FIG. 1 is an overall configuration diagram of an inspection device (1) according to the present invention, which is a diagram viewed from a direction perpendicular to a transport direction of an inspected article (2). In FIG. 1, the article to be inspected (2) is conveyed from the back surface to the front surface. FIG. 2 is a perspective view of the inspection apparatus (1). In FIG. 2, the article to be inspected (2) is assumed to be conveyed in the direction indicated by the arrow Y.
[0008]
As can be seen from FIGS. 1 and 2, the inspection apparatus (1) of the present invention includes a transport mechanism (3) for transporting the article (2) to be inspected, and an inner surface (2e) of the recess (2e) of the article (2) to be inspected. An imaging mechanism (20) for imaging reflected light; an illumination mechanism (10) for illuminating the inner surface of the recess (2e); and an image transmission unit (21) of the imaging mechanism (20) and light emitted from the illumination mechanism (10). It comprises a main body frame (30) for accommodating the transmission section (11) and a processing mechanism (40) for processing a video signal from the imaging mechanism (20). The article to be inspected (2) includes, but is not limited to, a convex portion (2d) that forms a groove along the transport direction, and a minute concave portion (2e) on the bottom surface of the groove.
[0009]
In the transport mechanism (3), as shown in FIG. 2, the inspected article (2) whose transport direction is random is guided at the guide entrance (31a) of the direction regulating guide (31) by the guide entrance (31a). 31a) It is rotated by the compressed air injected from the nozzle (32) installed near. Then, the angle of the groove formed by the convex portion (2d ) of the inspected article (2) matches the angle of the direction regulating guide, so that the inspected article (2) is conveyed in the same direction.
[0010]
The protection guide (33) is installed on the same straight line between the direction regulating guide (31) and the imaging mechanism (20), and its width is smaller than the interval between the grooves of the inspected article (2). ) Is larger than the width of the body frame (30). The protection guide (33) protects the imaging mechanism (20) when the inspected article (2) whose direction is not properly regulated is transported.
[0011]
FIG. 3 is a cross-sectional view of the main body frame (30). As shown in FIGS. 1 to 3, the outer diameter of the main body frame (30) is smaller than the interval between the grooves (referred to as portions formed by the convex portions (2 d)) of the article to be inspected (2). The lower end of 30) is arranged in the gap between the projections (2d). Further, it is provided at a position where the center line of the image transmission section (21) and the center line of the concave portion (2e) coincide.
[0012]
The imaging mechanism (20) includes an image transmission unit (21) and a two-dimensional image sensor (22) incorporated in a main body frame (30), and the image transmission unit (21) has a wide viewing angle. At the lowermost end. The viewing angle is preferably 2 tan -1 (W / 2L) degrees or more from the diameter W of the concave portion and the distance L from the tip of the main body frame (30) to the article to be inspected (2) as shown in FIG. Further, it includes lens groups (24), (25) and (26) for transmitting images. FIG. 4 shows the optical path (27) of the reflected light.
[0013]
Next, the two-dimensional image sensor (22) is formed by arranging well-known CCD elements of, for example, 512 pixels × 480 pixels. The image sensor (22) works together with its imaging lens (28) such that the inner surface of the minute concave portion (2e) of the article to be inspected (2) enters the field of view, and in the present embodiment, the lens faces vertically downward. It is arranged as follows.
[0014]
Next, the illumination mechanism (10) will be described. The illumination mechanism (10) is a lighting device in which a plurality of optical fibers for uniformly illuminating the entire inner surface of the minute concave portion (2e) of the inspected article (2) are bundled, and is provided above the inspected article (2). There are a plurality of irradiation ends (11a) of the optical fiber. The light emitted from the irradiation end (11a) of the optical fiber has an angle that can sufficiently irradiate the inner surface of the minute concave portion (2e). It is composed of a halogen lamp (12) as a white light source, a connector (14) provided on a main body frame (30), and an optical fiber bundle (13) for connecting the light source (12) and the connector (14). The optical fiber bundles (13) are arranged uniformly or concentrically around the image transmission section (21) one by one or several together in the main body frame (30). FIG. 4 shows an optical path (15) of irradiation light.
[0015]
Next, the processing mechanism (40) will be described. A processing mechanism (40) for processing and determining the captured image data; an image processing unit for extracting characteristic data of the image; a memory for storing characteristic data of non-defective products; It is composed of a judgment unit for judging good or bad.
[0016]
Next, an operation of inspecting the entire circumference of the inner surface of the minute concave portion (2e) of the inspected article (2) using the inspection apparatus (1) of the present invention will be described.
[0017]
First, the article to be inspected (2) is moved in a direction as shown in FIG. 2, that is, in a direction parallel to the direction of conveyance in a groove formed by the convex portion (2d), and on a straight line as the conveyance mechanism (3). And transported in the Y direction indicated by the arrow to the position of the inspection device (1).
[0018]
Next, the detection means of the article to be inspected (2) on the conveyor, for example, a photoelectric sensor (not shown) detects that the article to be inspected (2) has entered the area of the inspection apparatus (1), and the signal is processed by the processing mechanism. Input to (40). The processing mechanism (40) receives the signal from the photoelectric sensor and accumulates an image captured by the imaging mechanism (20) in an image memory. The conveyor may be operated intermittently or continuously, but it is preferable to operate continuously to improve the processing capacity.
[0019]
FIG. 5 shows an example of the captured image. As shown in FIG. 5, in the two-dimensional image captured by the imaging mechanism (20), an image obtained by capturing the bottom surface (2f) of the concave portion (2f) of the inspected article (2) from the upper surface appears at the center of the screen, and the inspected article is surrounded by the image. The image of the entire circumference of the inner surface (2e) of the concave portion (2) appears on the circumference. This is because, as described in the configuration of the above-described apparatus, the reflected light emitted from the inner surface (2e) of the concave portion of the inspected article (2) enters the wide-angle lens (23) of the imaging mechanism (20), and the incident light Is transmitted by the lens groups (24), (25) and (26) of the image transmission unit (21) and reaches the two-dimensional image sensor (22) such as a CCD image sensor, and an image as shown in FIG. It is because it is done.
[0020]
The image captured by the image capturing mechanism (20) is converted into data of 256 gradations by an A / D converter. Then, based on the region set in advance, only the image of the portion on the inner surface of the concave portion (2e) is extracted from all the pixels. The gradation data of the extracted image is determined by determining the magnitude of the gradation data with a preset threshold value, and the stain on the inner peripheral side surface of the concave portion (2e) of the inspected article (2) is determined. It is possible to detect a defect such as a foreign substance.
[0021]
Inspection of the inner peripheral side surface of the concave portion (2e) of the article to be inspected (2) is completed by the processing mechanism (40), and as a result of the inspection, a defective product having an abnormality on the surface of the portion is discharged to a defective product discharging step. . This step comprises, for example, an air nozzle and a chute. When the defective product comes to the chute position, the compressed air is discharged from the air nozzle to guide the defective product to the chute. On the other hand, the air nozzle does not operate for the inspected article (2) whose inspection result is normal, and proceeds to the next step on the conveyor.
[0022]
【The invention's effect】
According to the apparatus of the present invention, the inner peripheral surface of the minute concave portion of the inspected article can be imaged as one image while the inspected article is continuously moved. Therefore, the inspection step can be incorporated in the middle of the transport step, and the processing can be performed at high speed. In addition, the inspection apparatus of the present invention can capture a necessary image while maintaining a non-contact state with the article to be inspected, does not require a special handling mechanism, is compact, inexpensive, and has a high speed. Can be processed.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of an inspection device according to the present invention.
FIG. 2 is a perspective view of an inspection device according to the present invention.
FIG. 3 is a cross-sectional view of the imaging mechanism.
FIG. 4 is a diagram showing optical paths of irradiation light and reflected light.
FIG. 5 is an example of a captured image.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Inspection apparatus 2 Inspection object 3 Transport mechanism 10 Illumination mechanism 20 Imaging mechanism 40 Processing mechanism 21 Image transmission unit

Claims (6)

溝部底面に微小凹部を有する被検査物品の前記凹部の内面を搬送中に検査する装置であって、
被検査物品の溝部の方向を揃えて搬送する搬送機構と、
被検査物品の凹部内面からの反射光を撮像する撮像機構と、
前記撮像機構の光軸の周囲に設けた照明機構と、
前記撮像機構からの映像信号を処理する処理機構とから構成され、
前記撮像機構は広角な視野角を有する画像伝送部を含んでなり、
前記照明機構は前記画像伝送部を中心とした同心円上に均一に配置された光ファイバ束からなり、
前記画像伝送部中心線と前記凹部中心線とが一致する位置にあり、
前記画像伝送部の下端は溝部の凸部の間隙に配置されているものである検査装置。
A device for inspecting the inner surface of the concave portion of the article to be inspected having a minute concave portion at the bottom of the groove portion during transport,
A transport mechanism that transports the inspected articles with the directions of the grooves aligned,
An imaging mechanism for imaging reflected light from the inner surface of the concave portion of the article to be inspected,
An illumination mechanism provided around the optical axis of the imaging mechanism;
A processing mechanism for processing a video signal from the imaging mechanism,
The imaging mechanism includes an image transmission unit having a wide viewing angle,
The illumination mechanism is composed of optical fiber bundles uniformly arranged on concentric circles centered on the image transmission unit,
Ri position near to said image transmission centerline and the recess center line coincides,
The image lower end of the transmission section Ru der those are disposed in the gap between the convex portion of the groove inspection apparatus.
溝部底面に微小凹部を有する被検査物品の前記凹部の内面を搬送中に検査する装置であって、  An apparatus for inspecting the inner surface of the concave portion of the article to be inspected having a minute concave portion on the bottom of the groove portion during transport,
被検査物品の溝部の方向を揃えて搬送する搬送機構と、  A transport mechanism that transports the inspected articles with the directions of the grooves aligned,
広角な視野角を有する画像伝送部を含み、被検査物品の凹部内面からの反射光を撮像する撮像機構と、  Including an image transmission unit having a wide viewing angle, an imaging mechanism for imaging the reflected light from the inner surface of the concave portion of the article to be inspected,
前記撮像機構の光軸の周囲に設けた前記微小凹部内面を照明する照明機構と、  An illumination mechanism that illuminates the inner surface of the minute recess provided around the optical axis of the imaging mechanism;
前記画像伝送部および前記照明機構の照射光伝達部を収納する本体枠と、  A body frame that houses the image transmission unit and the irradiation light transmission unit of the illumination mechanism;
前記撮像機構からの映像信号を処理する処理機構とから構成され、  A processing mechanism for processing a video signal from the imaging mechanism,
前記照明機構は前記画像伝送部を中心とした同心円上に均一に配置された光ファイバ束からなり、  The illumination mechanism comprises an optical fiber bundle uniformly arranged on a concentric circle centered on the image transmission unit,
前記画像伝送部中心線と前記凹部中心線とが一致する位置にあり、  The image transmission unit center line and the concave portion center line are located at the same position,
前記本体枠の下端は溝部の凸部の間隙に配置されているものである検査装置。  An inspection device wherein the lower end of the main body frame is disposed in a gap between the convex portions of the groove.
前記撮像機構の視野角は、凹部の直径をWとし、本体枠先端から被検査物品までの距離Lとしたときに2tan  The viewing angle of the imaging mechanism is 2 tan when the diameter of the concave portion is W and the distance L from the tip of the body frame to the article to be inspected is 2 tan. −1-1 (W/2L)度以上である請求項2記載の検査装置。3. The inspection apparatus according to claim 2, wherein the temperature is equal to or more than (W / 2L) degrees. 前記被検査物品の溝部は一部を切り欠いたものであり、  The groove of the article to be inspected has a part cut out,
前記搬送機構は、被検査物品の方向を規制する方向規制ガイドを含み、被検査物品の溝部と方向規制ガイドの角度を一致せしめて被検査物品の溝部の方向をそろえるものである請求項1〜3いずれか一項に記載の検査装置。  The transport mechanism includes a direction regulating guide that regulates the direction of the article to be inspected, and aligns the direction of the groove of the article to be inspected by matching the angle between the groove of the article to be inspected and the direction regulating guide. 3. The inspection device according to claim 3.
前記撮像機構を保護する保護ガイドであって、前記方向規制ガイドと前記撮像機構との間に同一直線上に配置され、その幅は被検査物品の溝部の間隔より小さく、本体枠の幅より大きい保護ガイドをさらに含む請求項4記載の検査装置。  A protection guide for protecting the imaging mechanism, wherein the protection guide is disposed on the same straight line between the direction regulating guide and the imaging mechanism, and has a width smaller than a gap between grooves of the article to be inspected and larger than a width of a main body frame. The inspection device according to claim 4, further comprising a protection guide. 圧空による回転により、被検査物品の溝部と前記方向規制ガイドの角度を一致させるためのノズルであって、前記方向規制ガイドの入り口部付近に設置された圧空を噴射するノズルをさらに含む請求項4または5記載の検査装置。  5. A nozzle for matching the angle of the groove of the article to be inspected with the direction regulating guide by rotation by compressed air, the nozzle further comprising a nozzle for ejecting compressed air installed near an entrance of the direction regulating guide. Or the inspection device according to 5.
JP2000164200A 1999-06-07 2000-06-01 Internal inspection equipment for goods Expired - Fee Related JP3592615B2 (en)

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