JP2005121570A - Foreign substance inspecting method and foreign substance inspecting apparatus - Google Patents

Foreign substance inspecting method and foreign substance inspecting apparatus Download PDF

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JP2005121570A
JP2005121570A JP2003358958A JP2003358958A JP2005121570A JP 2005121570 A JP2005121570 A JP 2005121570A JP 2003358958 A JP2003358958 A JP 2003358958A JP 2003358958 A JP2003358958 A JP 2003358958A JP 2005121570 A JP2005121570 A JP 2005121570A
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container
foreign matter
inspection
foreign substance
image
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Susumu Sasaki
勧 佐々木
Takashi Motoyama
貴 本山
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Kirin Techno System Co Ltd
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Kirin Techno System Co Ltd
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    • 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
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G01N21/9018—Dirt detection in containers
    • G01N21/9027—Dirt detection in containers in containers after filling

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a foreign substance inspecting apparatus for uniformly illuminating a conveyed container in the circumferential direction, without preventing conveyance of a container, and inspecting the presence of a foreign substance with accuracy higher than those of conventional apparatuses. <P>SOLUTION: The foreign substance inspecting apparatus 1 uses a conveying means 3, conveys the container 2 having permeability and filled with a liquid along the predetermined path, inspects the presence of the foreign substance in the container, and is provided with an illuminating means 5 disposed along the predetermined path and illuminating the conveyed container, a container-rotating means 9 for rotating the illuminated container about its central line CL, and an image acquiring means 6 for acquiring images in a plurality of mutually different ranges of a inspected part 2a of the rotated container in the circumferential direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、容器内の液中に沈殿している異物の有無を検査する異物検査方法及び異物検査装置に関する。   The present invention relates to a foreign matter inspection method and a foreign matter inspection apparatus for inspecting for the presence or absence of foreign matter precipitated in liquid in a container.

液体が充填された容器内を容器の底部側から照明しつつ、回転している容器の側面から容器を撮影し、得られた画像から液中の異物の有無を検査する異物検査装置が知られている（特許文献１参照）。また、壜をその側面から照明しつつ、壜の底部を撮像手段により撮像して壜底部の異物を検出する壜検査装置が知られている（特許文献２参照）。その他、検査時にリング状の光ファイバを壜底の高さまで上昇移動させ、壜の全周から光を入射させる壜底異物検出装置が存在する（特許文献３参照）。
特開平６−２５８２５４ 特開平４−２１６４４４ 特開平９−２７４０００ There is known a foreign substance inspection apparatus that illuminates the inside of a container filled with liquid from the bottom side of the container, images the container from the side of the rotating container, and inspects the presence or absence of foreign substances in the liquid from the obtained image. (See Patent Document 1). There is also known a wrinkle inspection device that detects the foreign matter on the bottom of the heel by illuminating the heel from its side surface and taking an image of the bottom of the heel with an imaging means (see Patent Document 2). In addition, there is a bottom foreign matter detection device that moves a ring-shaped optical fiber up to the height of the bottom of the base during inspection and makes light incident from the entire periphery of the bottom (see Patent Document 3).
JP-A-6-258254 JP-A-4-216444 JP-A-9-274000

しかしながら、このような異物検査装置では、検査する容器の大きさ等によって検査に必要な照明の強度が確保できないおそれがある。容器の底部側から容器内を照明する場合、容器の径の大きさや充填された液体の透過度により、容器の底部から容器の側面へ光が十分に透過しない可能性がある。リング状の光ファイバを容器の周囲へ移動させて容器を照明する場合は、リングの内径により検査可能な容器の径が限定されてしまう。容器の側面から照明する場合は、容器の搬送方向には照明が配置できないので、搬送方向からの照明が弱くなる。そのため、照明が弱い部分の異物が判別し難くなる可能性がある。   However, in such a foreign substance inspection apparatus, there is a possibility that the intensity of illumination necessary for inspection cannot be ensured depending on the size of the container to be inspected. When the inside of the container is illuminated from the bottom side of the container, light may not be sufficiently transmitted from the bottom of the container to the side surface of the container due to the size of the diameter of the container and the permeability of the filled liquid. When the ring-shaped optical fiber is moved around the container to illuminate the container, the diameter of the container that can be inspected is limited by the inner diameter of the ring. When illuminating from the side surface of the container, since illumination cannot be arranged in the transport direction of the container, illumination from the transport direction becomes weak. Therefore, there is a possibility that it is difficult to discriminate foreign matter in a portion where illumination is weak.

そこで、本発明は、容器の搬送を妨げることなく容器の全周方向から均一に搬送中の容器へ照明を当て、従来よりも高い精度で異物の有無を検査することができる異物検査方法及び異物検査装置を提供することを目的とする。   Accordingly, the present invention provides a foreign object inspection method and a foreign object that can illuminate a container that is being transported uniformly from the entire circumferential direction of the container without hindering the transport of the container, and can inspect the presence or absence of the foreign object with higher accuracy than before. An object is to provide an inspection device.

以下、本発明について説明する。なお、本発明の理解を容易にするために添付図面の参照符号を括弧書きにて付記するが、それにより本発明が図示の形態に限定されるものではない。   The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

本発明の異物検査方法は、液体の充填された透過性を有する容器（２）を所定の経路に沿って搬送しつつ、前記容器内の異物の有無を検査する異物検査方法において、搬送される前記容器を照明するとともに、照明された前記容器をその中心線の回りに自転させつつ前記容器の検査対象部分（２ａ）の周方向に関する互いに異なる複数の範囲のそれぞれの画像を取得し、取得した画像に基づいて異物の有無を検査することにより、上述した課題を解決する。   The foreign matter inspection method of the present invention is transported in the foreign matter inspection method for inspecting the presence or absence of foreign matter in the container while transporting the permeable container (2) filled with liquid along a predetermined path. While illuminating the container, each image of a plurality of different ranges with respect to the circumferential direction of the inspection target portion (2a) of the container was acquired while rotating the illuminated container around its center line, and acquired. The above-described problems are solved by inspecting the presence or absence of foreign matter based on the image.

この異物検査方法によれば、容器を自転させることにより、容器の径に限定されることなく容器の全周方向から容器を照明することができる。また、容器の底に沈殿している異物を、容器を自転させることによって検出し易い位置（例えば、異物が照明を反射し易い位置）へ移動させることができる。さらに、検査対象部分の互いに異なる範囲のそれぞれの画像を取得してこれらの画像から異物の有無を検査するので、検査精度を高めることができる。   According to this foreign matter inspection method, by rotating the container, the container can be illuminated from the entire circumferential direction of the container without being limited to the diameter of the container. In addition, the foreign matter deposited on the bottom of the container can be moved to a position where the container is easy to detect by rotating the container (for example, a position where the foreign substance easily reflects the illumination). Furthermore, since each image in a different range of the part to be inspected is acquired and the presence / absence of a foreign substance is inspected from these images, the inspection accuracy can be improved.

本発明の異物検査方法において、前記検査対象部分の全周が複数の画像のそれぞれに分けて取得されるように前記複数の範囲が設定されていてもよい。このように検査対象部分の全周分の画像を取得してこれらの画像から異物の有無を検査することで、検査漏れを防止することができる。従って、より検査精度を高めることができる。   In the foreign matter inspection method of the present invention, the plurality of ranges may be set so that the entire circumference of the inspection target portion is acquired separately for each of a plurality of images. Thus, by acquiring images for the entire circumference of the inspection target portion and inspecting these images for the presence or absence of foreign matter, inspection omissions can be prevented. Therefore, the inspection accuracy can be further increased.

本発明の異物検査装置は、液体の充填された透過性を有する容器（２）を搬送手段（３）により所定の経路に沿って搬送しつつ、前記容器内の異物の有無を検査する異物検査装置（１）において、前記所定の経路に沿って配置されて搬送中の前記容器を照明する照明手段（５）と、照明された容器をその中心線（ＣＬ）の回りに自転させる容器回転手段（９）と、自転中の前記容器の検査対象部分（２ａ）の周方向に関する互いに異なる複数の範囲のそれぞれの画像を取得する画像取得手段（６）と、を備えることにより、上述した課題を解決する。   The foreign matter inspection apparatus of the present invention is a foreign matter inspection for inspecting the presence or absence of foreign matter in the container while transporting the permeable container (2) filled with liquid along the predetermined path by the transport means (3). In the apparatus (1), an illuminating means (5) arranged along the predetermined path for illuminating the container being conveyed, and a container rotating means for rotating the illuminated container around its center line (CL) (9) and image acquisition means (6) for acquiring respective images in a plurality of different ranges with respect to the circumferential direction of the inspection target portion (2a) of the container during rotation. Solve.

この異物検査装置によれば、容器を自転させることで、容器の搬送を妨げずに容器を全周方向から照明しつつ検査対象部分の互いに異なる範囲のそれぞれの画像を取得することができる。従って、上述した異物検査方法に関する説明と同様の理由により、検査精度を高めることができる。   According to this foreign matter inspection apparatus, by rotating the container, it is possible to acquire respective images in different ranges of the inspection target portion while illuminating the container from the entire circumferential direction without disturbing the conveyance of the container. Therefore, the inspection accuracy can be increased for the same reason as described above for the foreign substance inspection method.

本発明の異物検査装置において、前記画像取得手段は、撮像手段（７）と、前記所定の経路内に設定された検査区間にて前記搬送中の容器に追従して当該容器の前記検査対象部分の画像を前記撮像手段へ導く光学系（８）と、を備えていてもよい。このように、光学系が検査区間内の容器を追従することで、搬送中の容器の検査対象部分の複数の範囲のそれぞれの画像を取得することができる。   In the foreign matter inspection apparatus of the present invention, the image acquisition means includes the imaging means (7) and the inspection target portion of the container following the container being transported in the inspection section set in the predetermined path. And an optical system (8) for guiding the image to the imaging means. As described above, the optical system follows the container in the inspection section, so that images of a plurality of ranges of the inspection target portion of the container being transported can be acquired.

本発明によれば、容器を自転させることで、所定の搬送経路に沿って配置された照明により容器の全周方向から照明することができる。また、この容器の自転により異物を検出し易い位置へ移動させることができる。さらに、検査対象部分の互いに異なる範囲のそれぞれの画像を取得し、これらの画像に基づいて異物の検査を行うので、従来よりも異物の検出精度を高めることができる。   According to this invention, it can illuminate from the perimeter direction of a container by the illumination arrange | positioned along a predetermined | prescribed conveyance path | route by rotating a container. Further, the container can be moved to a position where foreign matter can be easily detected by the rotation of the container. Furthermore, since each image of a different range of the inspection object portion is acquired and the foreign object is inspected based on these images, the detection accuracy of the foreign object can be improved as compared with the conventional case.

図１に、本発明の一実施形態に係る異物検査装置の要部の平面図を示す。また、図２に、図１の異物検査装置の要部の側面図を示す。本発明の異物検査装置１は、容器２を所定の経路に沿って搬送する搬送手段としてのスターホイール３と、スターホイール３により搬送される容器２をその中心線ＣＬの回りに自転させる容器回転手段としてのタイミングベルト９と、容器２の自転を補助する回転ローラ４と、所定の経路に沿って配置されて搬送される容器２を照明する照明装置５と、スターホイール３の下方に配置（図２参照）され、自転中の容器２の検査対象部分である底面２ａの画像を取得する画像取得手段としての画像取得装置６と、を備えている。なお、タイミングベルト９は、スターホイール３の周囲の一部の区間（回転区間）に配置され、搬送中の容器２へ押し当てることができるように設けられている。検査対象の容器２は、透過性を有する材質で形成された、例えばガラス壜である。容器２の内部には、飲料等の液体が充填され、キャップＣＰで密封されている。   In FIG. 1, the top view of the principal part of the foreign material inspection apparatus which concerns on one Embodiment of this invention is shown. FIG. 2 is a side view of the main part of the foreign matter inspection apparatus shown in FIG. The foreign matter inspection apparatus 1 according to the present invention includes a star wheel 3 as a transport unit that transports the container 2 along a predetermined path, and a container rotation that rotates the container 2 transported by the star wheel 3 around its center line CL. A timing belt 9 as means, a rotating roller 4 for assisting the rotation of the container 2, an illuminating device 5 for illuminating the container 2 that is arranged and conveyed along a predetermined path, and a lower part of the star wheel 3 ( 2), and an image acquisition device 6 as an image acquisition means for acquiring an image of the bottom surface 2a, which is an inspection target portion of the rotating container 2. Note that the timing belt 9 is disposed in a partial section (rotation section) around the star wheel 3 and is provided so as to be pressed against the container 2 being conveyed. The container 2 to be inspected is, for example, a glass bottle made of a permeable material. The container 2 is filled with a liquid such as a beverage and sealed with a cap CP.

図２から明らかなように、画像取得装置６は、撮像手段としてのカメラ７と、所定の経路内に設定された検査区間にて搬送中の容器２を追従して底面２ａの画像をカメラ７へ導く光学系としての追従ミラー８と、を備えている。カメラ７は、ズームレンズ７ａと信号生成部７ｂとを備えている。信号生成分７ｂは例えばＣＣＤ、ＣＭＯＳ等の半導体素子を利用したイメージセンサを内蔵し、レンズ７ａ視野内に設定される撮影範囲の輝度分布に対応した画像信号を出力する。ズームレンズ７ａの倍率は、カメラ７から出力される画像信号に容器２の底面２ａに設定された所定の検査範囲が含まれるように調整されている。   As apparent from FIG. 2, the image acquisition device 6 follows the camera 7 as the imaging unit and the image of the bottom surface 2 a by following the container 2 being conveyed in the inspection section set in a predetermined path. And a follow-up mirror 8 as an optical system for guiding the light. The camera 7 includes a zoom lens 7a and a signal generation unit 7b. The signal generation part 7b incorporates an image sensor using a semiconductor element such as a CCD or CMOS, and outputs an image signal corresponding to the luminance distribution of the photographing range set in the field of view of the lens 7a. The magnification of the zoom lens 7 a is adjusted so that the image signal output from the camera 7 includes a predetermined inspection range set on the bottom surface 2 a of the container 2.

次に、異物検査装置１による容器２内に沈殿している異物の検査方法を説明する。なお、ここでは照明装置５からの照明光を透過させる性質の液体が容器２には充填されているものとする。但し、照明光が透過する限り、液体の着色の有無は問わない。   Next, a method for inspecting foreign matter precipitated in the container 2 by the foreign matter inspection apparatus 1 will be described. Here, it is assumed that the container 2 is filled with a liquid having a property of transmitting illumination light from the illumination device 5. However, it does not matter whether the liquid is colored as long as the illumination light is transmitted.

異物検査装置１は、容器２をスターホイール３の外周に設けられた凹部により図１の矢印Ａ方向へ所定の間隔で搬送しつつ、回転区間においてタイミングベルト９により搬送中の容器２を矢印Ｂ方向へ自転させる。異物検査装置１において、異物の有無の検査を行う検査区間は、照明装置５によって容器２が照明される搬送区間内に設定されている。図３に検査区間及び検査範囲の一例を示す。スターホイール３の搬送間隔が図３の角度θである場合、例えばこの角度θの８０％である角度θ１の搬送区間が検査区間として設定される。なお、容器２が自転する速度は、この検査区間において容器が１回転以上（例えば１．２回転）自転するように設定される。検査範囲には、底面２ａの一部である例えば底面２ａの６０度分（図３のＤＡの範囲）が設定される。 The foreign object inspection apparatus 1 conveys the container 2 being conveyed by the timing belt 9 in the rotating section while the container 2 is conveyed at a predetermined interval in the direction of arrow A in FIG. Rotate in the direction. In the foreign matter inspection apparatus 1, the inspection section for performing the inspection for the presence or absence of foreign matters is set in the transport section in which the container 2 is illuminated by the illumination device 5. FIG. 3 shows an example of the inspection section and the inspection range. When the conveyance interval of the star wheel 3 is the angle θ in FIG. 3, for example, a conveyance section having an angle θ 1 that is 80% of the angle θ is set as the inspection section. The speed at which the container 2 rotates is set so that the container rotates in one or more rotations (for example, 1.2 rotations) in this inspection section. For example, 60 degrees of the bottom surface 2a (the range of DA in FIG. 3) which is a part of the bottom surface 2a is set as the inspection range.

この検査区間θ１へ容器２が搬送されると、追従ミラー８により容器２の底面２ａの画像がカメラ７へ導かれる。追従ミラー８は、容器２の矢印Ａ方向への移動に伴って、検査区間を通過中の容器２の底面２ａの画像がカメラ７へ導かれるように、図２の矢印Ｃ方向へ中心点ＭＣを中心に徐々に回転する。追従していた容器２が検査区間を通過した後、追従ミラー８は、図２の矢印Ｄ方向へ回転して元の位置へ戻り、次に搬送される容器２の底面２ａの追従を開始する。このように所定の間隔で搬送される容器２の底面２ａを追従ミラー８が順次追従することで、カメラ７は底面２ａの複数の画像を取得することができる。検査区間において容器２は１回転以上自転しているので、カメラ７は、容器２の自転１回転分以上の底面２ａの検査範囲の画像を取得することがきる。 When the container 2 is conveyed to the inspection section θ 1 , an image of the bottom surface 2 a of the container 2 is guided to the camera 7 by the tracking mirror 8. The tracking mirror 8 is centered in the direction of arrow C in FIG. 2 so that the image of the bottom surface 2a of the container 2 passing through the examination section is guided to the camera 7 as the container 2 moves in the direction of arrow A. Rotate gradually around the center. After the container 2 that was following has passed through the inspection section, the tracking mirror 8 rotates in the direction of arrow D in FIG. 2 to return to the original position, and starts following the bottom surface 2a of the container 2 that is transported next. . As described above, the tracking mirror 8 sequentially follows the bottom surface 2a of the container 2 conveyed at a predetermined interval, so that the camera 7 can acquire a plurality of images of the bottom surface 2a. Since the container 2 rotates by one rotation or more in the inspection section, the camera 7 can acquire an image of the inspection range of the bottom surface 2a for one rotation or more of the container 2.

異物検査装置１において検査範囲は底面２ａの６０度分の範囲に設定されているので、検査区間で容器２が１回転自転した場合、カメラ７は、底面２ａの互いに異なる複数の範囲（図３のI〜VIの範囲）のそれぞれの画像を順次取得することができる。また、例えば、カメラ７の撮像時間により容器２が一周自転するまでに８枚の画像（容器２を４５度ずつ回転させた時の底面２ａの画像）が取得できる場合は、検査範囲を底面２ａの６０度に設定することで、底面２ａを１５度分ずつ重複させた画像を取得することができる。   Since the inspection range is set to a range of 60 degrees of the bottom surface 2a in the foreign substance inspection apparatus 1, when the container 2 rotates once in the inspection section, the camera 7 has a plurality of different ranges on the bottom surface 2a (FIG. 3). (I-VI range) can be acquired sequentially. Further, for example, when eight images (images of the bottom surface 2a when the container 2 is rotated 45 degrees each time) can be acquired before the container 2 rotates once by the imaging time of the camera 7, the inspection range is set to the bottom surface 2a. By setting the angle to 60 degrees, an image in which the bottom surface 2a is overlapped by 15 degrees can be acquired.

以上の異物検査装置によれば、容器２を自転させることで、容器２の全周方向から均一に照明しつつ、底面２ａの画像を取得することができる。また、容器２を自転させることで、容器２内に沈殿している異物を検出し易い位置へ移動させることもできる。さらに、追従ミラー８が検査区間を通過中の容器２を追従することで、底部２ａの互いに異なる範囲のそれぞれの画像を取得することができる。従って、検査漏れを防止して検査精度を高めることができる。   According to the foreign substance inspection apparatus described above, by rotating the container 2, it is possible to acquire an image of the bottom surface 2 a while uniformly illuminating from the entire circumferential direction of the container 2. In addition, by rotating the container 2, it is possible to move the foreign substance deposited in the container 2 to a position where it can be easily detected. Furthermore, the tracking mirror 8 tracks the container 2 that is passing through the inspection section, so that images of different ranges of the bottom 2a can be acquired. Therefore, it is possible to prevent inspection omission and increase inspection accuracy.

容器２の底面２ａに模様などがある場合は、容器２を所定の速度以上で自転させることにより異物の検出精度を高めることができる。この所定の速度は、カメラ７のシャッタースピード等に基づいて設定される。例えばシャッタースピードが１ｍｓｅｃでかつ容器２が６４ｍｓｅｃで１回転自転する場合、カメラ７のシャッターが開いている間に容器２は約５．６度自転する。そのため、カメラ７は約５．６度の自転分ぶれた容器２の画像を取得する。これにより、底面２ａの模様がぼやけてカメラ７に取得される。一方、容器２内に沈殿している異物は、慣性により容器２の自転する速度より少し遅れて動いている。そのため、異物は、底面２ａの模様と比較して、ぼやけずにカメラ７に取得される。このように、容器２の模様はぼやけて、一方沈殿した異物は模様と比較してぼやけずにカメラ７に取得されるので、異物の検出精度を高めることができる。   When there is a pattern or the like on the bottom surface 2a of the container 2, the foreign matter detection accuracy can be increased by rotating the container 2 at a predetermined speed or higher. This predetermined speed is set based on the shutter speed of the camera 7 or the like. For example, when the shutter speed is 1 msec and the container 2 rotates one revolution at 64 msec, the container 2 rotates about 5.6 degrees while the shutter of the camera 7 is open. Therefore, the camera 7 acquires an image of the container 2 that has been shaken by about 5.6 degrees. As a result, the pattern of the bottom surface 2 a is blurred and acquired by the camera 7. On the other hand, the foreign matter that has settled in the container 2 moves slightly behind the rotation speed of the container 2 due to inertia. Therefore, the foreign matter is acquired by the camera 7 without blurring as compared with the pattern of the bottom surface 2a. In this way, the pattern of the container 2 is blurred, while the deposited foreign matter is acquired by the camera 7 without being blurred compared to the pattern, so that the foreign matter detection accuracy can be improved.

本発明は、上述した実施形態に限定されることなく、種々の形態にて実施してよい。例えば、搬送手段はスターホイールに限定されない。所定の経路に沿って所定の間隔で容器を搬送することのできる搬送装置が適用できる。また、画像取得装置を配置する位置はスターホイールの下部に限定されない。追従ミラー等の光学系を組み合わせ、容器の検査対象部分が撮影できる位置へ自由に配置することができる。   The present invention is not limited to the above-described embodiments, and may be implemented in various forms. For example, the conveying means is not limited to a star wheel. A transport apparatus that can transport containers at predetermined intervals along a predetermined path can be applied. The position where the image acquisition device is arranged is not limited to the lower part of the star wheel. By combining an optical system such as a tracking mirror, the container can be freely arranged at a position where the inspection target portion can be photographed.

本発明の一実施形態に係る異物検査装置の要部の平面図。The top view of the principal part of the foreign material inspection apparatus which concerns on one Embodiment of this invention. 本発明の一実施形態に係る異物検査装置の要部の側面図。The side view of the principal part of the foreign material inspection apparatus which concerns on one Embodiment of this invention. 図１の異物検査装置の検査区間及び検査範囲の一例を示す図。The figure which shows an example of the test | inspection area and test | inspection range of the foreign material inspection apparatus of FIG.

符号の説明Explanation of symbols

１ 異物検査装置
２ 容器
２ａ 底面（検査対象部分）
３ スターホイール（搬送手段）
５ 照明装置（照明手段）
６ 画像取得装置（画像取得手段）
７ カメラ（撮像手段）
８ 追従ミラー（光学系）
９ タイミングベルト（容器回転手段）
ＣＬ 中心線 1 Foreign object inspection device 2 Container 2a Bottom surface (part to be inspected)
3 Starwheel (conveying means)
5 Lighting equipment (lighting means)
6 Image acquisition device (image acquisition means)
7 Camera (imaging means)
8 Tracking mirror (optical system)
9 Timing belt (container rotation means)
CL center line

Claims (4)

液体の充填された透過性を有する容器を所定の経路に沿って搬送しつつ、前記容器内の異物の有無を検査する異物検査方法において、搬送される前記容器を照明するとともに、照明された前記容器をその中心線の回りに自転させつつ前記容器の検査対象部分の周方向に関する互いに異なる複数の範囲のそれぞれの画像を取得し、取得した画像に基づいて異物の有無を検査することを特徴とする異物検査方法。   In the foreign matter inspection method for inspecting the presence or absence of foreign matter in the container while transporting a liquid-filled permeable container along a predetermined path, the container being transported is illuminated and the illuminated Acquiring each image of a plurality of different ranges with respect to the circumferential direction of the inspection target portion of the container while rotating the container around its center line, and inspecting the presence or absence of foreign matter based on the acquired image Foreign matter inspection method to do. 前記検査対象部分の全周が複数の画像のそれぞれに分けて取得されるように前記複数の範囲が設定されていることを特徴とする請求項１に記載の異物検査方法。   The foreign substance inspection method according to claim 1, wherein the plurality of ranges are set so that the entire circumference of the inspection target portion is acquired separately for each of a plurality of images. 液体の充填された透過性を有する容器を搬送手段により所定の経路に沿って搬送しつつ、前記容器内の異物の有無を検査する異物検査装置において、
前記所定の経路に沿って配置されて搬送中の前記容器を照明する照明手段と、照明された容器をその中心線の回りに自転させる容器回転手段と、自転中の前記容器の検査対象部分の周方向に関する互いに異なる複数の範囲のそれぞれの画像を取得する画像取得手段と、を備えていることを特徴とする異物検査装置。 In a foreign matter inspection apparatus for inspecting the presence or absence of foreign matter in the container while transporting a liquid-filled permeable container along a predetermined path by a transport means,
Illumination means for illuminating the container being transported arranged along the predetermined path, container rotation means for rotating the illuminated container around its center line, and an inspection target portion of the container being rotated A foreign matter inspection apparatus comprising: image acquisition means for acquiring images in a plurality of different ranges in the circumferential direction. 前記画像取得手段は、撮像手段と、前記所定の経路内に設定された検査区間にて前記搬送中の容器に追従して当該容器の前記検査対象部分の画像を前記撮像手段へ導く光学系と、を備えていることを特徴とする請求項３に記載の異物検査装置。   The image acquisition means includes an imaging means and an optical system that follows the container being transported in an inspection section set in the predetermined path and guides an image of the inspection target portion of the container to the imaging means. The foreign matter inspection apparatus according to claim 3, comprising:
JP2003358958A 2003-10-20 2003-10-20 Foreign substance inspecting method and foreign substance inspecting apparatus Pending JP2005121570A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010038572A (en) * 2008-07-31 2010-02-18 Nitto Seiko Co Ltd Inspection device of part and inspection method of part
CN104271967A (en) * 2012-04-27 2015-01-07 株式会社Khi Drop-out prevention tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010038572A (en) * 2008-07-31 2010-02-18 Nitto Seiko Co Ltd Inspection device of part and inspection method of part
CN104271967A (en) * 2012-04-27 2015-01-07 株式会社Khi Drop-out prevention tool

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