JP2016024132A - Inspection method of packing bag and inspection device of packing bag - Google Patents

Inspection method of packing bag and inspection device of packing bag Download PDF

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JP2016024132A
JP2016024132A JP2014150170A JP2014150170A JP2016024132A JP 2016024132 A JP2016024132 A JP 2016024132A JP 2014150170 A JP2014150170 A JP 2014150170A JP 2014150170 A JP2014150170 A JP 2014150170A JP 2016024132 A JP2016024132 A JP 2016024132A
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Prior art keywords
packaging bag
article
bag
image
impact
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JP6318037B2 (en
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勉 鴨島
Tsutomu Kamoshima
勉 鴨島
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Shibuya Packaging System Corp
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Fabrica Toyama Corp
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Priority to JP2014150170A priority Critical patent/JP6318037B2/en
Priority to CN201510300737.XA priority patent/CN105319038B/en
Priority to KR1020150080312A priority patent/KR20160012072A/en
Priority to DE102015213799.6A priority patent/DE102015213799A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/08—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it in a web folded and sealed transversely to form pockets which are subsequently filled and then closed by sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B65B29/028—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into filter bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B65B57/10—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
    • B65B57/12—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged and operating to control, or stop, the feed of wrapping materials, containers, or packages
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/50—Detectors
    • G01N2223/501—Detectors array
    • G01N2223/5015—Detectors array linear array
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/60—Specific applications or type of materials
    • G01N2223/643—Specific applications or type of materials object on conveyor

Abstract

PROBLEM TO BE SOLVED: To provide an inspection method of a packing bag which can exactly determine whether or not an extraction bag accommodated in the packing bag bites into a seal area, and an inspection device.SOLUTION: After photographing a packing bag 8 which is transported by a first transport conveyor 2 by a first photographing device 20, an impact is imparted to a second transport conveyor 10 which is arranged having a difference in a height with the first transport conveyor 2 by making the packing bag 8 fall on the second transport conveyor 10. After that, the packing bag 8 is photographed second time by a second photographing device 38 which is arranged at the second transport conveyor 10. Images which are photographed by the photographing devices 20, 38 in two points are sent to an appropriateness determination part 36 after being processed by an image processing part 34. By comparing the two images, when corners of an extraction bag which is accommodated in the packing bag 8 are not moved in the vicinity of a boundary of a seal area, it is determined that the extraction bag bites into a seal part, and when the corners are moved, it is determined that the extraction bag does not bite into the seal part.SELECTED DRAWING: Figure 1

Description

本発明は包装袋の検査方法および包装袋の検査装置に係り、特に、コーヒーやお茶などの食品が充填された抽出バッグ等の製品を収容し周辺をシールした包装袋の、シール箇所に製品が噛み込んでいるか否かを検査する包装袋の検査方法および包装袋の検査装置に関するものである。   The present invention relates to a packaging bag inspection method and a packaging bag inspection device, and in particular, a product at a sealing portion of a packaging bag containing a product such as an extraction bag filled with food such as coffee or tea and sealed around the product. The present invention relates to a packaging bag inspection method and a packaging bag inspection device for inspecting whether or not they are bitten.

例えば、抽出バッグの製造ラインにおいて、抽出バッグの酸化を防ぐために包装袋に収容するようにしたものが知られている。このように包装袋に抽出バッグを収容する場合に包材のコストを下げるために、抽出バッグと包装袋とのクリアランスを小さくすることが好ましいが、抽出バッグと包装袋とのクリアランスが小さいと、包装袋の周縁部をシールする際に、抽出バッグを噛み込んでしまう場合がある。包装袋のシール部に抽出バッグを噛み込んでしまうと、包装袋を破いて抽出バッグを取り出す際に、抽出バッグも一緒に破いてしまうという危険性がある。そのために、抽出バッグを包装袋に収容して周縁部をシールした後に、噛み込んでいるか否かを検査装置により検査して、抽出バッグを噛み込んでシールしたものはリジェクトするようにしている。このような検査装置が従来から知られている（例えば、特許文献１参照）。   For example, in an extraction bag production line, one that is accommodated in a packaging bag to prevent oxidation of the extraction bag is known. Thus, in order to reduce the cost of the packaging material when accommodating the extraction bag in the packaging bag, it is preferable to reduce the clearance between the extraction bag and the packaging bag, but when the clearance between the extraction bag and the packaging bag is small, When sealing the peripheral part of a packaging bag, an extraction bag may be bitten. If the extraction bag is bitten into the seal portion of the packaging bag, there is a risk that the extraction bag may be broken together when the packaging bag is broken and the extraction bag is taken out. Therefore, after the extraction bag is accommodated in the packaging bag and the peripheral edge portion is sealed, it is inspected by an inspection device whether or not the extraction bag is bitten, and the extraction bag bitten and sealed is rejected. Such an inspection apparatus is conventionally known (see, for example, Patent Document 1).

特許文献１には、物品にＸ線を照射する照射手段と、物品を透過したＸ線を検出する検出手段と、この検出手段の検出結果に基づいてＸ線透過画像を作成する画像作成手段と、前記Ｘ線透過画像に基づいてパッケージの封止部分への内容物の噛み込みを判定する判定手段を備え、この判定手段が、前記パッケージの外縁から前記内容物の外縁までの長さを前記Ｘ線透過画像に基づいて算出し、算出された長さに基づいて前記内容物の噛み込みを判定する物品検査装置が記載されている。   Patent Document 1 discloses an irradiation unit that irradiates an article with X-rays, a detection unit that detects X-rays transmitted through the article, and an image creation unit that creates an X-ray transmission image based on a detection result of the detection unit. And determining means for determining the biting of the contents into the sealed portion of the package based on the X-ray transmission image, and the determining means determines the length from the outer edge of the package to the outer edge of the contents. An article inspection apparatus is described that calculates based on an X-ray transmission image and determines the biting of the content based on the calculated length.

特許第５３２４３２８号公報Japanese Patent No. 5324328

ところで、アルミや樹脂製フィルムで製作された包装袋にＸ線を照射しても、包装袋が熱によって溶着されたシール領域の境界を正確に認識することはできない。前記特許文献１に記載された検査装置は、パッケージの外縁と物品外縁との距離を算出して、パッケージ内に収容された物品がシール部分に噛み込んでいるかどうかを判定している。しかしながら、この特許文献１に記載された構成では、内容物がパッケージのシール部分に接触している場合に、内容物が一緒にシールされているのか否かの判別が困難であり、判断の確実性が欠けるという問題があった。   By the way, even if a packaging bag made of aluminum or a resin film is irradiated with X-rays, the boundary of the seal region where the packaging bag is welded by heat cannot be accurately recognized. The inspection apparatus described in Patent Document 1 calculates the distance between the outer edge of the package and the outer edge of the article, and determines whether or not the article accommodated in the package is caught in the seal portion. However, in the configuration described in Patent Document 1, it is difficult to determine whether or not the contents are sealed together when the contents are in contact with the seal portion of the package. There was a problem of lack of sex.

本発明は、内部に物品が収容され、溶着シールされる領域が形成された包装袋のシール状態を検査するシール検査方法であって、物品が収容された包装袋に放射線を照射して撮影する第１撮影工程と、撮影された包装袋に衝撃を付与する工程と、衝撃が付与された包装袋に再度放射線を照射して撮影する第２撮影工程と、前記第１撮影工程で得られた第２画像と第２撮影工程で得られた第２画像から包装袋の良否を判定する良否判定工程とを有し、前記良否判定工程は、第１画像から認識された包装袋内における物品の位置と第２画像から認識された包装袋内における物品の位置とを比較し、包装袋のシール領域近傍において、位置が変わらない部分を有する物品が収容された包装袋を、シール領域に物品が噛み込んでいると判断することを特徴とするものである。   The present invention relates to a seal inspection method for inspecting a sealing state of a packaging bag in which an article is accommodated and a region to be welded and sealed is formed, and the packaging bag containing the article is irradiated with radiation and photographed. Obtained in the first photographing step, the step of imparting an impact to the photographed packaging bag, the second photographing step of photographing by irradiating the impacted packaging bag again with radiation, and the first photographing step A pass / fail judgment step for judging pass / fail of the packaging bag from the second image and the second image obtained in the second photographing step, wherein the pass / fail judgment step is performed for the article in the packaging bag recognized from the first image. The position and the position of the article in the packaging bag recognized from the second image are compared, and the packaging bag in which the article having a portion whose position does not change is stored in the vicinity of the sealing area of the packaging bag. To judge that they are biting It is an butterfly.

また、第２の発明は、内部に物品が収容され、溶着シールされる領域が形成された包装袋のシール状態を検査するシール検査装置であって、物品が収容された包装袋に放射線を照射する放射線照射手段と、放射線が照射された包装袋を撮影する撮影手段と、撮影された包装袋に衝撃を与える衝撃付与手段と、前記撮影手段によって得られた画像から包装袋の良否を判定する良否判定手段とを備え、前記衝撃付与手段によって衝撃を付与された包装袋に再度放射線を照射して撮影するとともに、前記良否判定手段は、前記撮影手段によって１回目に撮影した画像から認識された包装袋内における物品の位置と２回目に撮影した画像から認識された包装袋内における物品の位置とを比較し、包装袋のシール領域近傍において、位置が変わらない部分を有する物品が収容された包装袋を、シール領域に物品が噛み込んでいると判断することを特徴とするものである。   The second invention is a seal inspection device for inspecting the sealing state of a packaging bag in which an article is contained and a region to be welded and sealed is formed, and the packaging bag containing the article is irradiated with radiation. A radiation irradiating means, a photographing means for photographing the packaging bag irradiated with radiation, an impact applying means for impacting the photographed packaging bag, and a quality of the packaging bag is determined from an image obtained by the photographing means. A pass / fail judgment means, and the packaging bag which has been given an impact by the impact applying means is again irradiated with radiation and photographed, and the pass / fail judgment means is recognized from an image taken for the first time by the photographing means. Compare the position of the article in the packaging bag with the position of the article in the packaging bag recognized from the image taken the second time, and the position does not change in the vicinity of the seal area of the packaging bag The packaging bag the article is accommodated with, and is characterized in that it is determined that the article in the sealing areas are bites.

さらに、第３の発明は、内部に物品が収容され、溶着シールされる領域が形成された包装袋のシール状態を検査するシール検査装置であって、物品が収容された包装袋を搬送する搬送手段と、包装袋に放射線を照射する第１放射線照射手段と、第１放射線照射手段によって放射線が照射された包装袋を撮影する第１撮影手段と、第１撮影手段によって撮影された包装袋に衝撃を与える衝撃付与手段と、衝撃付与手段によって衝撃が付与された包装袋に再度放射線を照射する第２放射線照射手段と、第２放射線照射手段によって放射線が照射された包装袋を撮影する第２撮影手段と、第１撮影手段によって得られた第１画像と第２撮影手段によって得られた第２画像とから包装袋の良否を判定する良否判定手段とを備え、前記良否判定手段は、第１画像から認識された包装袋内における物品の位置と第２画像から認識された包装袋内における物品の位置とを比較し、包装袋のシール領域近傍において、位置が変わらない部分を有する物品が収容された包装袋を、シール領域に物品が噛み込んでいると判断することを特徴とするものである。   Further, the third invention is a seal inspection apparatus for inspecting the sealing state of a packaging bag in which an article is accommodated and a region to be welded and sealed is formed, and transporting the packaging bag containing the article Means, first radiation irradiating means for irradiating the packaging bag with radiation, first imaging means for photographing the packaging bag irradiated with radiation by the first radiation irradiating means, and a packaging bag photographed by the first photographing means. An impact applying means for applying an impact, a second radiation irradiating means for irradiating radiation again to the packaging bag to which the impact is applied by the impact applying means, and a second for photographing the packaging bag irradiated with the radiation by the second radiation irradiating means. A quality determining means for determining the quality of the packaging bag from the imaging means and the first image obtained by the first imaging means and the second image obtained by the second imaging means; The position of the article in the packaging bag recognized from the first image is compared with the position of the article in the packaging bag recognized from the second image. It is characterized in that it is judged that an article is caught in the sealed region of the package bag accommodated.

本発明の包装袋の検査方法は、物品が収容された包装袋を撮影した後、この包装袋に衝撃を付与し、その後、再度包装袋の撮影を行い、これら２回の撮影工程によって得られた画像を比較して、包装袋のシール領域の境界の近傍において内部の物品が移動したか否かを判断するようにしたので、外装袋に物品が噛み込んだ状態でシールされたことを確実に検出することができる。また。本発明の包装袋の検査装置は、放射線照射手段から放射線が照射された包装袋を撮影手段により撮影し、この包装袋に衝撃を付与した後、再度包装袋に放射線を照射して撮影手段により２度目の撮影を行って、２回の撮影画像を比較して包装袋の良否を判定するようにしたので、外装袋に物品が噛み込んだ状態でシールされたことを確実に検出することができる。   The method for inspecting a packaging bag according to the present invention is obtained by photographing the packaging bag containing the article, giving an impact to the packaging bag, then photographing the packaging bag again, and obtaining these two times. Compared to the image, it was determined whether or not the article inside moved in the vicinity of the boundary of the seal area of the packaging bag, so that it was confirmed that the article was sealed with the article in the outer bag. Can be detected. Also. The inspection device for a packaging bag of the present invention takes an image of the packaging bag irradiated with radiation from the radiation irradiating means, and gives an impact to the packaging bag, and then irradiates the packaging bag again with the imaging means. Since the second shot was taken and the quality of the packaging bag was judged by comparing the two shot images, it is possible to reliably detect that the article has been sealed in the state of the outer bag. it can.

第１実施例における包装袋の検査装置の全体の構成を簡略化して示す概略構成図である。It is a schematic block diagram which simplifies and shows the whole structure of the inspection apparatus of the packaging bag in 1st Example. 包装袋の製造工程を説明する図である。It is a figure explaining the manufacturing process of a packaging bag. 撮影画像により噛み込んでいるか否かを判断する工程を説明する図である。It is a figure explaining the process of determining whether it has bitten by the picked-up image. 第２実施例における包装袋の検査領域を示す図である。It is a figure which shows the test | inspection area | region of the packaging bag in 2nd Example. 検査領域の撮影画像を示す図である。It is a figure which shows the picked-up image of a test | inspection area | region. 図５に示す撮影画像を二値化処理して得られた画像示す図である。It is a figure which shows the image obtained by binarizing the picked-up image shown in FIG. 第３実施例における包装袋の検査装置の概略構成を示す平面図である。It is a top view which shows schematic structure of the inspection apparatus of the packaging bag in 3rd Example. 第３実施例の要部を示す側面図である。It is a side view which shows the principal part of 3rd Example.

包装袋の検査装置の上流側で、充填包装装置によって三角形状の面を４つ有する四面体状の抽出バッグが製造され、次の外装袋製造装置で外装フィルム内に前記抽出バッグを挿入し、縦方向および横方向のシールを行った後切断して、抽出バッグを収容した包装袋が形成される。この包装袋が検査装置の第１搬送コンベヤ上に供給されて搬送される。第１搬送コンベヤによる包装袋の搬送経路に、搬送されている包装袋に上方からＸ線を照射するＸ線照射装置と包装袋に照射されて透過したＸ線を受けるラインカメラからなる第１撮影装置が配置されており、この第１撮影装置で撮影された画像を制御装置の画像処理部に送って処理し、良否判定部に送る。   On the upstream side of the packaging bag inspection device, a tetrahedral extraction bag having four triangular surfaces is manufactured by the filling packaging device, and the extraction bag is inserted into the exterior film by the following exterior bag manufacturing device, After the vertical and horizontal seals are made, the product is cut to form a packaging bag containing the extraction bag. This packaging bag is supplied and conveyed on the 1st conveyance conveyor of an inspection apparatus. 1st imaging which consists of the X-ray irradiation apparatus which irradiates X-rays from the upper direction to the packaging bag currently conveyed by the conveyance path of the packaging bag by a 1st conveyance conveyor, and the line camera which receives X-rays which were irradiated to the packaging bag and permeate | transmitted An apparatus is arranged, and an image photographed by the first photographing device is sent to the image processing unit of the control device for processing and sent to the pass / fail judgment unit.

第１搬送コンベヤの下流端の下方に、第２搬送コンベヤの上流部が配置されており、第１撮影装置で第１回目の撮影が行われた包装袋が、第１搬送コンベヤから第２搬送コンベヤ上に落下する。これら第１搬送コンベヤと第２搬送コンベヤとは、落下した包装袋の内部で抽出バッグが移動する程度の衝撃を与えることができる高低差を有しており、これら両搬送コンベヤの高低差が衝撃付与手段を構成している。   An upstream portion of the second conveyor is disposed below the downstream end of the first conveyor, and the packaging bag that has been imaged for the first time by the first imaging device is transported from the first conveyor to the second conveyor. Fall on the conveyor. The first conveyor and the second conveyor have a height difference that can give an impact to the extent that the extraction bag moves inside the dropped packaging bag. The giving means is configured.

第１搬送コンベヤから第２搬送コンベヤに落下して衝撃を付与された包装袋が、第２搬送コンベヤに設けられている第２撮影装置により第２回目の撮影が行われる。この撮影画像も画像処理部で処理された後前記良否判定部に送られる。良否判定部では、第１回目の撮影画像と第２回目の撮影画像とを比較し、包装袋内のシール領域の境界の近傍において、収容されている抽出バッグに位置が変わらない部分がある場合には、シール領域に抽出バッグが噛み込んでいる可能性が高いと判断し、リジェクトする。また、包装袋内のシール領域の近傍において、収容されている抽出バッグに位置が変わらない部分がない場合には、シール領域に抽出バッグが噛み込んでいないので良品と判断する。   The packaging bag that has been impacted by dropping from the first conveyor to the second conveyor is subjected to the second imaging by the second imaging device provided on the second conveyor. This captured image is also processed by the image processing unit and then sent to the pass / fail determination unit. When the pass / fail judgment unit compares the first shot image with the second shot image, and there is a portion whose position does not change in the extraction bag accommodated in the vicinity of the boundary of the seal region in the packaging bag In this case, it is determined that there is a high possibility that the extraction bag is caught in the seal area, and the rejection is made. Further, if there is no portion whose position does not change in the extraction bag accommodated in the vicinity of the seal region in the packaging bag, it is determined that the extraction bag is non-defective because the extraction bag is not bitten in the seal region.

以下、図面に示す実施例により本発明を説明する。図１の左側に配置された第１搬送コンベヤ２の上流側に、図示しない充填包装装置が配置されており、この充填包装装置によってコーヒーや茶が充填されてシールされた抽出バッグ４（図２参照）が形成されて、外装袋製造装置（図示せず）に送られる。外装袋製造装置では、帯状の外装フィルム６の長手方向中央部を折り曲げて、上方が開放した二つ折りの状態にし（外装フィルム６は図２の下部側６ａが折り曲げられ、上部側６ｂが開放している）、上部側開放部６ｂから外装フィルム６内に前記抽出バッグ４を挿入する。その後、外装フィルム６の、抽出バッグ４を挿入した位置の前後を縦シール（縦シール位置を符号６ｃで示す）し、さらに、上部の開放部６ｂを横シール（横シール位置を符号６ｄで示す）した後、縦シール位置６ｃで切断して、抽出バッグ４が収容され周囲が密封された包装袋８（図２の右端参照）が形成される。この切断された包装袋８が本実施例に係る包装袋の検査装置１に供給される。なお、包装袋８内に収容される抽出バッグ４は、いわゆる三角パックで、三角形状の面を４つ有する四面体の形状をしており、図示しない折り畳み手段により２つ折りされて外装フィルム６へ挿入される。また、三角パックは外表面にタグＴが付けられた吊し糸Ｓが取り付けられている。   Hereinafter, the present invention will be described with reference to embodiments shown in the drawings. A filling and packaging apparatus (not shown) is arranged upstream of the first conveyor 2 arranged on the left side of FIG. 1, and the extraction bag 4 (FIG. 2) filled with coffee and tea and sealed by this filling and packaging apparatus. Is formed and sent to an outer bag manufacturing apparatus (not shown). In the outer bag manufacturing apparatus, the longitudinal central portion of the belt-shaped outer film 6 is folded into a half-folded state (the outer film 6 is bent at the lower side 6a in FIG. 2 and the upper side 6b is opened). The extraction bag 4 is inserted into the exterior film 6 from the upper side opening 6b. After that, the exterior film 6 is vertically sealed before and after the position where the extraction bag 4 is inserted (the longitudinal seal position is indicated by reference numeral 6c), and the upper opening 6b is laterally sealed (the horizontal seal position is indicated by reference numeral 6d). After that, the packaging bag 8 (see the right end in FIG. 2) in which the extraction bag 4 is accommodated and the periphery is sealed is formed by cutting at the vertical sealing position 6c. The cut packaging bag 8 is supplied to the packaging bag inspection apparatus 1 according to this embodiment. The extraction bag 4 accommodated in the packaging bag 8 is a so-called triangular pack and has a tetrahedron shape having four triangular faces, and is folded into two by a folding means (not shown) to the exterior film 6. Inserted. Further, the hanging thread S with the tag T attached to the outer surface is attached to the triangular pack.

この実施例に係る包装袋の検査装置１は、第１搬送手段（第１搬送コンベヤ２）と、この第１搬送コンベヤ２の下流端２ａの下方に上流端１０ａが配置された第２搬送手段(第２搬送コンベヤ１０）を有している。第１搬送コンベヤ２は、上流側プーリ（図示せず）と下流側プーリ１２に掛け回された無端状ベルト１４を有しており、このベルト１４上に物品が収容された包装袋８を載せて搬送する。また、第２搬送コンベヤ１０は、上流側プーリ１６と下流側プーリ（図示せず）に掛け回された無端状ベルト１８を有しており、このベルト１８上に包装袋８を載せて搬送する。これら第１搬送コンベヤ２と第２搬送コンベヤ１０とは、第１搬送コンベヤ２によって搬送されてきた包装袋８が下流端２ａから下方の第２搬送コンベヤ１０上に落下した際に、包装袋８内に収容されている抽出バッグ４が移動する程度の衝撃を与える高低差を有している。この実施例では、第１搬送コンベヤ２と第２搬送コンベヤ１０との高低差により衝撃付与手段１１が構成されている。   The packaging bag inspection apparatus 1 according to this embodiment includes a first conveying means (first conveying conveyor 2) and a second conveying means in which an upstream end 10a is disposed below the downstream end 2a of the first conveying conveyor 2. (Second conveyor 10). The first conveyor 2 includes an upstream pulley (not shown) and an endless belt 14 wound around a downstream pulley 12, and a packaging bag 8 containing articles is placed on the belt 14. Transport. Further, the second conveyor 10 has an endless belt 18 wound around an upstream pulley 16 and a downstream pulley (not shown), and the packaging bag 8 is placed on the belt 18 and conveyed. . The first transport conveyor 2 and the second transport conveyor 10 are configured such that when the packaging bag 8 transported by the first transport conveyor 2 falls from the downstream end 2a onto the second transport conveyor 10 below, the packaging bag 8 It has a height difference that gives an impact to the extent that the extraction bag 4 accommodated therein moves. In this embodiment, the impact applying means 11 is constituted by the height difference between the first transfer conveyor 2 and the second transfer conveyor 10.

第１搬送コンベヤ２の包装袋搬送経路に、第１搬送コンベヤ２上を搬送されている包装袋８に放射線（この実施例ではＸ線）を照射して撮影する第１撮影装置２０が配置されている。この第１撮影装置２０は、第１搬送コンベヤ２の搬送面の上方に配置された第１Ｘ線照射装置２２と、搬送面の下側に配置され、包装袋８を透過してきたＸ線を検出する第１ラインカメラ２４を備えている。この第１撮影装置２０が配置された位置のやや上流側に、第１搬送コンベヤ２上を搬送されてくる包装袋８を検出する第１センサ２６が配置されており、この第１センサ２６が包装袋８を検出すると、第1制御装置２８の指令部３０から第１Ｘ線照射装置２２に指令信号が送られ、包装袋８に対しＸ線が照射される。第１搬送コンベヤ２による包装袋８の搬送位置は、エンコーダ３２により常時検出されており、このエンコーダ３２からの信号によって包装袋８が第１Ｘ線撮影装置２０の位置に到達したときに、第１Ｘ線照射装置２２からＸ線が照射される。なおラインカメラ２４に代えて、エリアカメラを用いてもよい。   A first imaging device 20 is arranged on the packaging bag conveyance path of the first conveyor 2 to irradiate the packaging bag 8 conveyed on the first conveyor 2 with radiation (X-rays in this embodiment). ing. The first imaging device 20 detects a first X-ray irradiation device 22 disposed above the transport surface of the first transport conveyor 2 and an X-ray disposed below the transport surface and transmitted through the packaging bag 8. The first line camera 24 is provided. A first sensor 26 for detecting the packaging bag 8 conveyed on the first conveying conveyor 2 is arranged slightly upstream of the position where the first photographing device 20 is arranged. When the packaging bag 8 is detected, a command signal is sent from the command unit 30 of the first control device 28 to the first X-ray irradiation device 22, and the packaging bag 8 is irradiated with X-rays. The transport position of the packaging bag 8 by the first transport conveyor 2 is always detected by the encoder 32. When the packaging bag 8 reaches the position of the first X-ray imaging apparatus 20 by the signal from the encoder 32, the first X X-rays are irradiated from the beam irradiation device 22. Instead of the line camera 24, an area camera may be used.

第１撮影手段２０の第１ラインカメラ２４によって検出された画像は、第1制御装置２８の画像処理部３４に送られ、所定の処理をされた後良否判定手段（良否判定部３６）に送られる。   The image detected by the first line camera 24 of the first photographing unit 20 is sent to the image processing unit 34 of the first control device 28, and after being subjected to predetermined processing, sent to the pass / fail judgment unit (pass / fail judgment unit 36). It is done.

第１搬送コンベヤ２の下流側プーリ１２の下方に第２搬送コンベヤ１０の上流側プーリ１６が配置されており、第１搬送コンベヤ２の下流側プーリ１２を通過した包装袋８は、下方の第２搬送コンベヤ１０の上流端に落下して受け取られる。この第２搬送コンベヤ１０の包装袋搬送経路に、搬送されている包装袋８を撮影する第２撮影装置３８が配置されている。第２撮影装置３８は、第２搬送コンベヤ１０の搬送面の上方に配置された第２Ｘ線照射装置４０と、搬送面の下側に配置され、包装袋８を透過してきたＸ線を検出する第２ラインカメラ４２を備えている。この第２撮影装置３８の配置された位置のやや上流側に、搬送されてくる包装袋８を検出する第２センサ４４が配置されており、この第２センサ４４が包装袋８を検出すると、第２制御装置２９の第２指令部３１から第２Ｘ線照射装置４０に指令信号が送られ、包装袋８に対しＸ線が照射される。第２搬送コンベヤ１０による包装袋８の搬送位置は、エンコーダ４６により常時検出されており、このエンコーダ４６からの信号によって包装袋８が第２撮影装置３８の位置に到達したときに、第２Ｘ線照射装置４０からＸ線が照射される。   An upstream pulley 16 of the second transport conveyor 10 is disposed below the downstream pulley 12 of the first transport conveyor 2, and the packaging bag 8 that has passed through the downstream pulley 12 of the first transport conveyor 2 2 Dropped to the upstream end of the conveyor 10 and received. A second imaging device 38 that images the packaging bag 8 being conveyed is disposed in the packaging bag conveyance path of the second conveyance conveyor 10. The second imaging device 38 detects the X-rays that are disposed below the transport surface of the second transport conveyor 10 and the second X-ray irradiation device 40 disposed below the transport surface and have passed through the packaging bag 8. A second line camera 42 is provided. A second sensor 44 that detects the packaging bag 8 that is conveyed is disposed slightly upstream of the position where the second imaging device 38 is disposed. When the second sensor 44 detects the packaging bag 8, A command signal is sent from the second command unit 31 of the second control device 29 to the second X-ray irradiation device 40, and the packaging bag 8 is irradiated with X-rays. The transport position of the packaging bag 8 by the second transport conveyor 10 is always detected by the encoder 46. When the packaging bag 8 reaches the position of the second imaging device 38 by a signal from the encoder 46, the second X-ray is detected. X-rays are irradiated from the irradiation device 40.

第２撮影装置３８の第２ラインカメラ４２によって検出された画像は、前記第２制御装置２９の第２画像処理部３５に送られ、所定の処理をされた後良否判定手段（良否判定部３６）に送られる。前記第１撮影装置２０から送られた映像と、同一の包装袋８を撮影した第２撮影装置３８からの映像を比較して良否判定部３６で判定する。良否判定部３６で良品と判定された包装袋８は、そのまま第２搬送コンベヤ１０によって搬送されて次の工程に送られる。また、第２搬送コンベヤ１０の下流部には、リジェクト装置４８が配置されており、良否判定部３６で不良品であると判定された包装袋８はリジェクト信号出力部５０からリジェクト装置４８に送られた信号によりリジェクトされる。   The image detected by the second line camera 42 of the second imaging device 38 is sent to the second image processing unit 35 of the second control device 29 and subjected to a predetermined process, and then a pass / fail judgment means (a pass / fail judgment unit 36). ). The image sent from the first photographing device 20 and the image from the second photographing device 38 that photographed the same packaging bag 8 are compared, and the pass / fail judgment unit 36 makes the judgment. The packaging bag 8 determined to be a non-defective product by the pass / fail determination unit 36 is transported by the second transport conveyor 10 as it is and sent to the next step. In addition, a reject device 48 is disposed downstream of the second conveyor 10, and the packaging bag 8 determined to be defective by the pass / fail determination unit 36 is sent from the reject signal output unit 50 to the reject device 48. Rejected by the received signal.

この実施例装置では、抽出バッグ４を収容した包装袋８を作成する工程で、外装フィルム６の縦方向と横方向のシール６ｃ、６ｄを行った後切断するようになっており、シールする際にシール領域（前記シール６ｃ、６ｄを行った部分であり、図２では黒く塗りつぶしてある）に抽出バッグ４が噛み込んでいるか否かを検査する。例えば、抽出バッグ４が、図３（ａ）に示す状態（抽出バッグ４の角部Ａ、Ｂ、Ｃが包装袋８のシール領域６ｃ、６ｄに噛み込んでいない状態）で収容されているときは良品であり、噛み込んでいる場合には不良品と判断する。そのために第１撮影装置２０によって一度撮影した包装袋８を、第１搬送コンベヤ２から第２搬送コンベヤ１０へ落下させることにより包装袋８に衝撃を与え、その後、第２撮影装置３８によって同じ包装袋８の２度目の撮影を行って、これら両画像を比較する。   In this embodiment apparatus, in the step of creating the packaging bag 8 containing the extraction bag 4, the longitudinal and lateral seals 6c and 6d of the exterior film 6 are cut and then cut off. It is inspected whether or not the extraction bag 4 is biting into the seal region (the portion where the seals 6c and 6d are applied, which are blacked out in FIG. 2). For example, when the extraction bag 4 is accommodated in the state shown in FIG. 3A (the corners A, B, and C of the extraction bag 4 are not engaged with the seal regions 6c and 6d of the packaging bag 8). Is a non-defective product, and if it is bitten, it is judged as a defective product. For this purpose, the packaging bag 8 once photographed by the first photographing device 20 is dropped from the first conveying conveyor 2 to the second conveying conveyor 10 to give an impact to the packaging bag 8, and then the same packaging by the second photographing device 38. A second image of the bag 8 is taken and these two images are compared.

第１撮影装置２０による撮影画像が図３（ａ）であり、同一の包装袋８に衝撃を与えた後の第２撮影装置３８による撮影画像が図３（ｂ）の状態である場合、第１撮影装置２０によって撮影された画像図３（ａ）は第１画像処理部３４において抽出バッグ４の３箇所の角部Ａ、Ｂ、Ｃの座標が算出され、第２撮影装置３８によって撮影された画像図３（ｂ）は第２画像処理部３５において抽出バッグ４の３箇所の角部Ａ、Ｂ、Ｃの座標が算出される。これらの画像データは良否判定部３６に送られ、良否判定部３６では、これら両画像データを比較して包装袋８内に収容されている抽出バッグ４の３箇所の角部Ａ、Ｂ、Ｃがそれぞれ移動していると認識し、抽出バッグ４は包装袋８のシール領域６ｃ、６ｄに全く噛み込まれていないと判断して良品と判定する。   When the photographed image by the first photographing device 20 is FIG. 3A and the photographed image by the second photographing device 38 after impacting the same packaging bag 8 is in the state of FIG. The image shown in FIG. 3A taken by the first photographing device 20 is taken by the second photographing device 38 after the first image processing unit 34 calculates the coordinates of the three corners A, B, C of the extraction bag 4. In FIG. 3B, the second image processing unit 35 calculates the coordinates of the three corners A, B, and C of the extraction bag 4. These image data are sent to the pass / fail judgment unit 36, which compares the two image data and provides the three corners A, B, C of the extraction bag 4 accommodated in the packaging bag 8. And the extraction bag 4 is determined to be a non-defective product by determining that the extraction bag 4 is not bitten by the sealing regions 6c and 6d of the packaging bag 8 at all.

また、第１撮影装置２０により撮影した包装袋８の画像が図３（ｃ）に示す状態であり、同一の包装袋８に衝撃を与えた後第２撮影装置３８によって撮影した画像が、図３（ｄ）に示す状態である場合、第１撮影装置２０によって撮影された画像図３（ｃ）は第１画像処理部３４において抽出バッグ４の３箇所の角部Ａ、Ｂ、Ｃの座標が算出され、第２撮影装置３８によって撮影された画像図３（ｄ）は第２画像処理部３５において抽出バッグ４の３箇所の角部Ａ、Ｂ、Ｃの座標が算出される。良否判定部３６では、これら両画像データを比較し、抽出バッグ４の３箇所の角部Ａ、Ｂ、Ｃのうち、２箇所の角部Ｂ、Ｃは移動しているが、シール領域６の近傍に位置する角部Ａの座標が移動していないので、この抽出バッグ８は包帯袋８のシール領域６に噛み込んでいる可能性が高いと判定する。   Also, the image of the packaging bag 8 photographed by the first photographing device 20 is in the state shown in FIG. 3C, and the image photographed by the second photographing device 38 after impacting the same packaging bag 8 is shown in FIG. In the state shown in FIG. 3D, the image taken by the first photographing device 20 is the coordinates of the three corners A, B, C of the extraction bag 4 in the first image processing unit 34. In FIG. 3D, the coordinates of the three corners A, B, and C of the extraction bag 4 are calculated in the second image processing unit 35. In the pass / fail judgment unit 36, both the image data are compared, and among the three corners A, B, C of the extraction bag 4, the two corners B, C are moving, but the seal region 6 Since the coordinates of the corner A located in the vicinity have not moved, it is determined that there is a high possibility that the extraction bag 8 is caught in the seal region 6 of the bandage bag 8.

図４〜図６は第1実施例と異なる画像処理を行って噛み込みを判断する第２実施例の工程を表す図である。第1実施例で説明した画像処理は第１撮影装置２０と第２撮影装置３８によって撮影された抽出バッグ４の画像から３箇所の座標を算出して比較を行っていたが、第２実施例では、得られた画像に検査領域を設定して検査領域内に存在する抽出バッグ４の位置により噛み込んでいるか否かを判定するものである。なお、第２実施例と第１実施例とは画像処理のみが異なり、その他の構成は同じである。   4 to 6 are diagrams showing the steps of the second embodiment in which the image processing different from that of the first embodiment is performed to determine the bite. In the image processing described in the first embodiment, three coordinates are calculated from the images of the extraction bag 4 photographed by the first photographing device 20 and the second photographing device 38, and the comparison is performed. Then, an inspection region is set in the obtained image, and it is determined whether or not the extraction bag 4 is bitten by the position of the extraction bag 4 existing in the inspection region. The second embodiment is different from the first embodiment only in image processing, and the other configurations are the same.

図４は検査領域を示す図であり、第１撮影装置２０と第２撮影装置３８で撮影された画像は、第１画像処理部３４と第２画像処理部３５によって検査領域が設定される。具体的には、包装袋８の外縁から所定の値内側の領域、例えば、シール領域のバラツキを考慮してシールする予定の領域に数ｍｍほど加えた値をシール領域と設定する。なお、本実施例では、横シール領域６ｄの設定を５ｍｍとし、５ｍｍに２ｍｍを加算して横シール領域６ｄの外縁から７ｍｍの領域を横シールの検査領域としている。また、縦シール領域６ｃの設定を３ｍｍとし、３ｍｍに２ｍｍを加算して縦シール領域６ｃの外縁から５ｍｍの領域を検査領域に設定している。図４において、斜線部分が横シールおよび縦シールを合わせた検査領域であり、検査領域内に見える線Ｌ１は予想される横シールの境界線、Ｌ２は予想される縦シールの境界線を示している。第１画像処理部３４と第２画像処理部３５は得られた画像から検査領域を設定し、検査領域内に抽出バッグ４が存在するか否か、存在する場合はどの位置に存在するかを算出する。   FIG. 4 is a diagram showing an inspection area. An image captured by the first imaging device 20 and the second imaging device 38 is set by the first image processing unit 34 and the second image processing unit 35. Specifically, a value obtained by adding a few millimeters to an area inside a predetermined value from the outer edge of the packaging bag 8, for example, an area to be sealed in consideration of variations in the seal area is set as the seal area. In this embodiment, the setting of the horizontal seal area 6d is 5 mm, and 2 mm is added to 5 mm, and an area 7 mm from the outer edge of the horizontal seal area 6d is used as the horizontal seal inspection area. Further, the setting of the vertical seal region 6c is 3 mm, and 2 mm is added to 3 mm, and a region 5 mm from the outer edge of the vertical seal region 6c is set as the inspection region. In FIG. 4, the hatched portion is the inspection region where the horizontal seal and the vertical seal are combined, the line L1 visible in the inspection region indicates the boundary line of the expected horizontal seal, and L2 indicates the boundary line of the expected vertical seal Yes. The first image processing unit 34 and the second image processing unit 35 set an inspection area from the obtained image, and whether or not the extraction bag 4 exists in the inspection area and in which position it exists. calculate.

第１撮影装置２０による撮影画像が図５（ａ）であり、同一の包装袋８に衝撃を与えた後の第２撮影装置３８による撮影画像が図５（ｂ）の状態である場合、第１画像処理部３４では、画像図５（ａ）に検査領域を設定するとともに、二値化処理を行う。図５（ａ）では検査領域内に抽出バッグ４がＰ部分とＱ部分に存在しているので、二値化処理を行うと図６（ａ）のように抽出バッグ４が存在する部分が黒く表示される。また、第２画像処理部３５においても、画像図５（ｂ）に検査領域を設定するとともに、二値化処理を行うことにより、抽出バッグ４が存在するＲ部分が黒く表示された図６（ｂ）の画像を得る。   When the photographed image by the first photographing device 20 is FIG. 5A and the photographed image by the second photographing device 38 after impacting the same packaging bag 8 is in the state of FIG. The one image processing unit 34 sets an inspection region in the image FIG. 5A and performs binarization processing. In FIG. 5A, since the extraction bag 4 exists in the P portion and the Q portion in the inspection area, when the binarization process is performed, the portion where the extraction bag 4 exists is black as shown in FIG. 6A. Is displayed. In addition, in the second image processing unit 35, an R region where the extraction bag 4 is present is displayed in black by setting an inspection region in the image FIG. The image of b) is obtained.

良否判定部３６では、第１画像処理部３４と第２画像処理部３５から送られてくる図６（ａ）と図６（ｂ）の画像データを差分処理することによって、抽出バッグ４が包帯袋８内で移動しているか否かを判定する。図６（ｃ）は図６（ａ）と図６（ｂ）を差分処理した画像であるが、Ｐ部分では図６（ａ）の黒く表示された部分がそのまま残っており、抽出バッグ４が移動したと認識する。それに対してＱ部分では、図６（ａ）や図６（ｂ）で黒く表示された部分のうち、わずかな部分しか残っていないので、Ｑ部分においては抽出バッグ４の大部分が移動していないと認識する。このように、第１撮影装置２０による画像の検査領域に抽出バッグ４を認識し、第２撮影画像３８による画像と差分処理した結果、抽出バッグ４に移動していない部分があると認識すると、この包装袋８内の抽出バッグ４はシール領域に噛み込んでいる可能性があると判定する。   In the pass / fail judgment unit 36, the extraction bag 4 is bandaged by performing differential processing on the image data of FIGS. 6A and 6B sent from the first image processing unit 34 and the second image processing unit 35. It is determined whether or not the bag 8 is moving. FIG. 6C is an image obtained by performing difference processing between FIG. 6A and FIG. 6B, but the portion displayed in black in FIG. Recognize that it has moved. On the other hand, in the Q part, only a small part remains among the parts displayed in black in FIGS. 6A and 6B, so that most of the extraction bag 4 moves in the Q part. Recognize not. As described above, when the extraction bag 4 is recognized in the examination region of the image by the first imaging device 20 and is subjected to differential processing from the image by the second captured image 38, it is recognized that there is a portion that has not moved to the extraction bag 4. It is determined that there is a possibility that the extraction bag 4 in the packaging bag 8 is stuck in the seal region.

なお、三角パックのタグＴや吊し糸Ｓの噛み込みを検出することも可能である。また、抽出バッグ４の形状としては三角パック以外の形状の抽出バッグでもよい。   It is also possible to detect the biting of the tag T and the hanging thread S of the triangular pack. Further, the shape of the extraction bag 4 may be an extraction bag having a shape other than the triangular pack.

図７は、第３実施例に係る包装袋の検査装置１０１を示す図である。第１実施例では、第１搬送コンベヤ２上に、抽出バッグ４を収容した包装袋８を撮影する第１撮影装置２０を設け、また、第２搬送コンベヤ１０上に、同じ包装袋８を撮影する第２撮影装置３８を設けるとともに、第１搬送コンベヤ２と第２搬送コンベヤ１０との高低差を衝撃付与手段１１として利用して衝撃を与えるようにしたが、この第３実施例に係る装置では、１箇所の撮影装置により２回の撮影を行うようにしている。   FIG. 7 is a view showing a packaging bag inspection apparatus 101 according to the third embodiment. In the first embodiment, a first photographing device 20 for photographing the packaging bag 8 containing the extraction bag 4 is provided on the first conveying conveyor 2, and the same packaging bag 8 is photographed on the second conveying conveyor 10. The second photographing device 38 is provided, and the height difference between the first transport conveyor 2 and the second transport conveyor 10 is used as the impact applying means 11 to give an impact. The apparatus according to the third embodiment In this case, photographing is performed twice by one photographing device.

抽出バッグなどの製品を内部に収容した包装袋１０８を搬送する搬送コンベヤ１０２の搬送経路に、第１実施例と同様なＸ線照射装置とラインカメラを備えた撮影装置１２２が配置されており、上流側から搬送されてきた包装袋１０８にＸ線を照射するとともに撮影を行って検査画像を得る。撮影装置１２２の下流にはカメラ１２４が配置されており、搬送コンベヤ１０２上を搬送される包装袋１０８の位置を検出する。また、搬送コンベヤ１０２の側部に衝撃付与手段としてのロボット１５２が配置されており、カメラ１２４からの信号を基に撮影装置１２２による撮影（第１回目の撮影）が済んだ包装袋１０８を取り上げて何回か振ることにより衝撃を与える（図８参照）。   An imaging device 122 equipped with an X-ray irradiation device and a line camera similar to those in the first embodiment is arranged on the transport path of the transport conveyor 102 that transports the packaging bag 108 containing the product such as an extraction bag inside, The packaging bag 108 conveyed from the upstream side is irradiated with X-rays and photographed to obtain an inspection image. A camera 124 is disposed downstream of the imaging device 122 and detects the position of the packaging bag 108 that is transported on the transport conveyor 102. Further, a robot 152 as an impact applying unit is disposed on the side of the conveyor 102, and the packaging bag 108 that has been photographed by the photographing device 122 (first photographing) based on a signal from the camera 124 is taken up. The impact is given by shaking several times (see FIG. 8).

搬送コンベヤ１０２の撮影装置１２２とカメラ１２４が配置されている位置の下流側から上流側へ包装袋１０８を搬送することができるリターンコンベヤ（第１リターンコンベヤ１５４Ａ、第２リターンコンベヤ１５４Ｂ、第３リターンコンベヤ１５４Ｃ）が設けられている。第１回目の撮影が済んでロボット１５２により衝撃を付与された包装袋１０８は、ロボット１５２によって第１リターンコンベヤ１５４Ａ上に載せられ、第1リターンコンベヤ１５４Ａによって搬送された後、第２リターンコンベヤ１５４Ｂおよび第３リターンコンベヤ１５４Ｃによって順次搬送されて、搬送コンベヤ１０２の前記Ｘ線照射装置１２２よりも上流側に戻される。   Return conveyors (first return conveyor 154A, second return conveyor 154B, third return) that can transport the packaging bag 108 from the downstream side to the upstream side of the position where the imaging device 122 and camera 124 of the conveyor 102 are disposed. A conveyor 154C) is provided. The packaging bag 108 that has been subjected to the first shooting and is given an impact by the robot 152 is placed on the first return conveyor 154A by the robot 152, conveyed by the first return conveyor 154A, and then the second return conveyor 154B. And sequentially conveyed by the third return conveyor 154C and returned to the upstream side of the X-ray irradiation device 122 of the conveyor 102.

衝撃を付与された包装袋１０８は、撮影装置１２２によってＸ線を照射されるとともに、２回目の撮影が行われた後、今度はそのまま搬送コンベヤ１０２によって下流側へ搬送される。このように２回の撮影が行われた包装袋１０８は、図示しない画像処理部で処理された後良否判定部に送られて２回の撮影画像の比較が行われる。第１実施例や第２実施例と同様に、包装袋１０８の内部に収容されている抽出バッグの一部がシール領域の近傍で位置が変わらない場合には、噛み込んでいると判断し、位置が変わった場合には噛み込んでいないと判断する。   The packaging bag 108 to which the impact is applied is irradiated with X-rays by the imaging device 122 and, after the second imaging, is carried by the conveyor 102 as it is downstream. The packaging bag 108 that has been imaged twice in this way is processed by an image processing unit (not shown) and then sent to a pass / fail judgment unit to compare the captured images twice. As in the first embodiment and the second embodiment, if the position of a part of the extraction bag accommodated inside the packaging bag 108 does not change in the vicinity of the seal region, it is determined that it is bitten, If the position has changed, it is determined that the bite is not bitten.

なお、第１実施例および第２実施例の画像処理において、説明の便宜上、２つに折り畳まれた抽出バッグ４が三角形を呈するとしたが、実際は三角形になることはなく、きちんと折り畳まれるとホームベースの形状になる。また、抽出バッグ４がきちんと折り畳まれない場合は、角がずれるので画像は複雑な多角形となる。   In the image processing of the first embodiment and the second embodiment, the extraction bag 4 folded in two is assumed to have a triangle for convenience of explanation. However, the extraction bag 4 does not actually become a triangle, and if it is folded properly, the home It becomes the shape of the base. Further, when the extraction bag 4 is not properly folded, the corners are shifted and the image becomes a complex polygon.

４ 物品（抽出バッグ）
６ｃ 溶着シールされる領域
６ｄ 溶着シールされる領域
８ 包装袋
１１ 衝撃付与手段
２２ 放射線照射手段（第１Ｘ線照射装置）
２４ 撮影手段（第１ラインカメラ）
３６ 良否判定手段
４０ 放射線照射手段（第２Ｘ線照射装置）
４２ 撮影手段（第２ラインカメラ） 4 Goods (extraction bags)
6c Area to be welded and sealed 6d Area to be welded and sealed 8 Packaging bag 11 Impact applying means 22 Radiation irradiation means (first X-ray irradiation apparatus)
24 Shooting means (first line camera)
36 Pass / fail judgment means 40 Radiation irradiation means (second X-ray irradiation apparatus)
42 Imaging means (second line camera)

Claims (3)

内部に物品が収容され、溶着シールされる領域が形成された包装袋のシール状態を検査するシール検査方法であって、
物品が収容された包装袋に放射線を照射して撮影する第１撮影工程と、撮影された包装袋に衝撃を付与する工程と、衝撃が付与された包装袋に再度放射線を照射して撮影する第２撮影工程と、前記第１撮影工程で得られた第１画像と第２撮影工程で得られた第２画像から包装袋の良否を判定する良否判定工程とを有し、
前記良否判定工程は、第１画像から認識された包装袋内における物品の位置と第２画像から認識された包装袋内における物品の位置とを比較し、包装袋のシール領域近傍において、位置が変わらない部分を有する物品が収容された包装袋を、シール領域に物品が噛み込んでいると判断することを特徴とする包装袋の検査方法。 A seal inspection method for inspecting the sealing state of a packaging bag in which an article is contained and a region to be welded and sealed is formed,
A first imaging step of irradiating and photographing a packaging bag in which an article is stored, a step of imparting an impact to the photographed packaging bag, and irradiating again and irradiating the packaging bag to which the impact is imparted A second imaging step, a quality determination step of determining the quality of the packaging bag from the first image obtained in the first imaging step and the second image obtained in the second imaging step,
The pass / fail judgment step compares the position of the article in the packaging bag recognized from the first image with the position of the article in the packaging bag recognized from the second image, and the position is near the seal region of the packaging bag. A method for inspecting a packaging bag, characterized in that a packaging bag containing an article having an unchanging part is judged to be bitten in a seal region. 内部に物品が収容され、溶着シールされる領域が形成された包装袋のシール状態を検査するシール検査装置であって、
物品が収容された包装袋に放射線を照射する放射線照射手段と、放射線が照射された包装袋を撮影する撮影手段と、撮影された包装袋に衝撃を与える衝撃付与手段と、前記撮影手段によって得られた画像から包装袋の良否を判定する良否判定手段とを備え、
前記衝撃付与手段によって衝撃を付与された包装袋に再度放射線を照射して撮影するとともに、前記良否判定手段は、前記撮影手段によって１回目に撮影した画像から認識された包装袋内における物品の位置と２回目に撮影した画像から認識された包装袋内における物品の位置とを比較し、包装袋のシール領域近傍において、位置が変わらない部分を有する物品が収容された包装袋を、シール領域に物品が噛み込んでいると判断することを特徴とする包装袋の検査装置。 A seal inspection device for inspecting a sealing state of a packaging bag in which an article is contained and a region to be welded and sealed is formed,
A radiation irradiating means for irradiating a packaging bag containing an article, a photographing means for photographing the packaging bag irradiated with radiation, an impact applying means for giving an impact to the photographed packaging bag, and the photographing means. Quality determination means for determining the quality of the packaging bag from the image,
The packaging bag that has been given an impact by the impact applying means is imaged by irradiating radiation again, and the quality determination means is the position of the article in the packaging bag that is recognized from the first image taken by the imaging means. And the position of the article in the packaging bag recognized from the image taken for the second time, and the packaging bag containing the article having a portion whose position does not change in the vicinity of the sealing area of the packaging bag. An inspection device for a packaging bag, characterized in that it is determined that an article is bitten. 内部に物品が収容され、溶着シールされる領域が形成された包装袋のシール状態を検査するシール検査装置であって、
物品が収容された包装袋を搬送する搬送手段と、包装袋に放射線を照射する第１放射線照射手段と、第１放射線照射手段によって放射線が照射された包装袋を撮影する第１撮影手段と、第１撮影手段によって撮影された包装袋に衝撃を与える衝撃付与手段と、衝撃付与手段によって衝撃が付与された包装袋に再度放射線を照射する第２放射線照射手段と、第２放射線照射手段によって放射線が照射された包装袋を撮影する第２撮影手段と、第１撮影手段によって得られた第１画像と第２撮影手段によって得られた第２画像とから包装袋の良否を判定する良否判定手段とを備え、
前記良否判定手段は、第１画像から認識された包装袋内における物品の位置と第２画像から認識された包装袋内における物品の位置とを比較し、包装袋のシール領域近傍において、位置が変わらない部分を有する物品が収容された包装袋を、シール領域に物品が噛み込んでいると判断することを特徴とする包装袋の検査装置。 A seal inspection device for inspecting a sealing state of a packaging bag in which an article is contained and a region to be welded and sealed is formed,
Conveying means for conveying the packaging bag containing the article, first radiation irradiating means for irradiating the packaging bag with radiation, first imaging means for photographing the packaging bag irradiated with radiation by the first radiation irradiating means, An impact applying means for applying an impact to the packaging bag photographed by the first imaging means, a second radiation irradiating means for irradiating the packaging bag to which the impact has been applied by the impact applying means, and a radiation by the second radiation irradiating means. The second imaging means for imaging the packaging bag irradiated with the light, the quality determination means for determining the quality of the packaging bag from the first image obtained by the first imaging means and the second image obtained by the second imaging means And
The quality determination means compares the position of the article in the packaging bag recognized from the first image with the position of the article in the packaging bag recognized from the second image, and the position is in the vicinity of the seal region of the packaging bag. An inspection apparatus for a packaging bag, characterized in that a packaging bag in which an article having an unchanging part is accommodated is judged that the article is caught in a seal region.
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