JP2008039645A - Visual inspection method and visual inspection device of small article - Google Patents

Visual inspection method and visual inspection device of small article Download PDF

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JP2008039645A
JP2008039645A JP2006216061A JP2006216061A JP2008039645A JP 2008039645 A JP2008039645 A JP 2008039645A JP 2006216061 A JP2006216061 A JP 2006216061A JP 2006216061 A JP2006216061 A JP 2006216061A JP 2008039645 A JP2008039645 A JP 2008039645A
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inspection
inspection drum
small article
drum
outer peripheral
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JP3872508B1 (en
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Shinri Utsunomiya
真利 宇都宮
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Lion Engineering Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a visual inspection device of a small article, which performs visual inspection of the surface and the back of the small article by utilizing the first inspection drum and the second inspection drum, and performs automatically a work for inspection accuracy confirmation in each inspection drum. <P>SOLUTION: The device equipped with the first inspection drum, the second inspection drum, and an imaging device for each inspection drum is characterized in that switching is performed freely, between an operation action for taking an image of one surface of the small article repeatedly, while rotating the first inspection drum, without delivering the small article held in the first inspection drum to the second inspection drum, and an operation action for taking an image of the other surface of the small article, while rotating the second inspection drum, with the small article held in the second inspection drum without being discharged. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、錠剤、ハードカプセル、ソフトカプセル、飴、キャンディー、チョコレートなどの小物品を外周面に保持しながら回転する複数の検査ドラムと該小物品の表裏面を撮影する画像撮影装置を備え、小物品の表面と裏面の外観不良を検査することができる小物品の外観検査方法と外観検査装置に関する。   The present invention includes a plurality of inspection drums that rotate while holding small articles such as tablets, hard capsules, soft capsules, candy, candy, and chocolate on the outer peripheral surface, and an image photographing device that photographs the front and back surfaces of the small articles. The present invention relates to an appearance inspection method and an appearance inspection apparatus for a small article capable of inspecting appearance defects on the front surface and the back surface.

従来から、錠剤などの小物品に異物の付着や汚れ、欠けや割れ等の変形、あるいは印刷不良などの欠陥を生じているか否かを検査する外観検査が、外観検査装置を用いて自動的に行われている。この外観検査装置は、一般に、錠剤などの小物品を検査ドラムに供給する供給装置と、小物品を外周面に保持しながら回転する検査ドラムと、該検査ドラム外周の小物品表面を撮影するための画像撮影装置と、検査ドラム外周の小物品を照明する照明装置と、検査ドラムから検査済みの小物品を取り出す取出装置を備えて構成されている。
この種の小物品の外観検査にあっては、検査条件設定の根拠となる検査精度の確認が極めて重要とされている。即ち、この検査条件設定には、照明時の小物品表面の照度、検査ドラムの回転数に連動する小物品の移動速度、検査時の温度条件、日間変動、ロット間変動など、各種の外乱要因を考慮する必要があり、それらの要因が検査精度にどのように影響するのかを把握し確認する必要もある。また、検査精度の確認には、同一サンプルにおける繰り返し精度の確認が最も大切である。
Conventionally, visual inspection using a visual inspection device automatically inspects whether small articles such as tablets have foreign matter adhered, dirty, deformed, chipped, cracked, or defective, such as defective printing. Has been done. In general, the appearance inspection apparatus is for supplying a small article such as a tablet to the inspection drum, an inspection drum that rotates while holding the small article on the outer peripheral surface, and a surface of the small article on the outer periphery of the inspection drum. And an illuminating device for illuminating a small article on the outer periphery of the inspection drum, and a take-out device for taking out the inspected small article from the inspection drum.
In the appearance inspection of this type of small article, confirmation of inspection accuracy that is the basis for setting inspection conditions is extremely important. In other words, this inspection condition setting includes various disturbance factors such as the illuminance of the surface of the small article during illumination, the moving speed of the small article linked to the number of revolutions of the inspection drum, the temperature condition during inspection, daily fluctuation, and lot-to-lot fluctuation. It is necessary to consider and confirm how these factors affect the inspection accuracy. In order to check the inspection accuracy, it is most important to check the repeatability of the same sample.

ここで従来の錠剤外観検査装置に適用されている錠剤の搬送系は、直線的な吸引ベルト方式、吸引検査ローラーと直線的な吸引ベルトの併用方式、吸引検査ローラ2本と側面用ダイローラ1本の方式、供給ローラ1本と吸引検査ローラ2本の方式、直線的なベルトコンベア方式などが知られている。
これらの中でも、回転自在に設けられた表面検査ドラムと、この表面検査ドラムに近接配置して回転自在に設けられた裏面検査ドラムを備え、両検査ドラムの外周面側に個々に錠剤の吸着機能を備えてなる錠剤の外観検査装置が知られている。(特許文献1参照)
特許第3758004号公報
Here, the tablet conveyance system applied to the conventional tablet appearance inspection apparatus is a linear suction belt system, a combined system of a suction inspection roller and a linear suction belt, two suction inspection rollers and one side die roller. There are known a method of the above, a method of one supply roller and two suction inspection rollers, a linear belt conveyor method, and the like.
Among these, the front surface inspection drum provided rotatably and the back surface inspection drum provided rotatably in the vicinity of the surface inspection drum are provided, and the tablet adsorption function is individually provided on the outer peripheral surface side of both inspection drums. There is known an external appearance inspection apparatus for tablets. (See Patent Document 1)
Japanese Patent No. 3758004

しかし、これら従来の錠剤の外観検査装置は、検査精度の確認、特に繰り返し確認による精度の確認について、特別な搬送の仕組みや機能を有していないので、通常の錠剤外観検査と同じ方式を用いて検査精度の確認を行う必要があった。
先の特許文献1に記載された錠剤外観検査装置は勿論、その他のいずれの方式の外観検査装置にあっても、検査の繰り返し精度の確認では、同一の錠剤サンプルを複数回テストするために、錠剤サンプルの供給、錠剤サンプルの撮像、画像解析処理、錠剤サンプルの排出を繰り返す必要がある。
しかし、これら従来の外観検査装置では、通常の検査運転と同じ方式で繰り返しテストを行うために、錠剤サンプルの供給と検査後排出された錠剤サンプルを回収する作業をいずれも手作業で行う必要があるために、時間、労力ともに多大となり易く、作業員に対する負荷が大きく、時間も無駄になり易いという問題がある。
However, these conventional tablet appearance inspection devices do not have a special transport mechanism or function for confirmation of inspection accuracy, particularly accuracy confirmation by repeated confirmation, and therefore use the same method as normal tablet appearance inspection. It was necessary to check the inspection accuracy.
In addition to the tablet appearance inspection apparatus described in the above-mentioned Patent Document 1, in any other type of appearance inspection apparatus, in order to test the same tablet sample multiple times in confirming the repeatability of inspection, It is necessary to repeat tablet sample supply, tablet sample imaging, image analysis processing, and tablet sample discharge.
However, in these conventional visual inspection devices, it is necessary to manually perform both the supply of the tablet sample and the recovery of the tablet sample discharged after the inspection in order to repeatedly perform the test in the same manner as the normal inspection operation. Therefore, there is a problem that both time and labor are likely to be large, the load on the worker is large, and time is easily wasted.

また、同一の錠剤サンプルで検査を繰り返すと、錠剤の供給装置と排出装置において錠剤サンプルが傷み易く、また、汚れやすいので、検査開始当初の錠剤サンプルと繰り返し検査中の錠剤サンプルが同一物ではなくなる危険性が大きく、検査時の繰り返し回数を増加することができない問題を有していた。更に、同一サンプルでの検査の繰り返し回数に制限が付くために、数多くの錠剤サンプルを供給する必要があり、検査が煩雑化する原因となっている。また、均一な性状の錠剤サンプルを多数得ること自体が難しく、再現精度にも不安が発生し易い問題もある。
従って、時間、労力、サンプル作成の問題から、繰り返し回数をこれまで以上に増やすことは難しく、その結果として、錠剤等の小物品の繰り返し精度の確認を統計的に十分な回数行うことが難しいという問題があった。
In addition, when the inspection is repeated with the same tablet sample, the tablet sample is easily damaged and soiled in the tablet supply device and the discharge device, so the tablet sample at the beginning of the inspection and the tablet sample being repeatedly inspected are not the same. There was a problem that the risk was great and the number of repetitions during the inspection could not be increased. Furthermore, since the number of repetitions of the inspection with the same sample is limited, it is necessary to supply a large number of tablet samples, which causes the inspection to become complicated. In addition, it is difficult to obtain a large number of tablet samples with uniform properties, and there is a problem that reproducibility tends to cause anxiety.
Therefore, it is difficult to increase the number of repetitions more than ever due to problems of time, labor, and sample preparation, and as a result, it is difficult to check the repetition accuracy of small articles such as tablets statistically sufficiently. There was a problem.

本発明者は前記課題を解決するために、第1検査ドラムと第2検査ドラムを利用して小物品の表裏面の外観検査ができるとともに、各検査ドラムにおける検査精度確認の作業を自動的に行うことができる小物品の外観検査方法及び外観検査装置を提供することを目的とする。   In order to solve the above problems, the present inventor can inspect the appearance of the front and back surfaces of small articles using the first inspection drum and the second inspection drum, and automatically performs inspection accuracy confirmation work on each inspection drum. An object of the present invention is to provide an appearance inspection method and an appearance inspection apparatus for a small article that can be performed.

上記目的を達成するために、本発明は以下の構成を採用した。
(1)本発明は、錠剤等の小物品の厚さ方向一方の面を外周面に保持しながら回転することにより、該小物品を搬送する第1検査ドラムと、該第1検査ドラムの下側に外周面を近接させた状態に回転自在に設置され、前記第1検査ドラムから小物品を受け取って該小物品を前記第1検査ドラムの搬送状態と反転させた状態で外周面に保持しながら回転する第2検査ドラムと、前記第1検査ドラムの外周面に保持された小物品を撮影して該小物品の一方の面の画像を取り込む第1撮像装置と、前記第2検査ドラムの外周面に保持された小物品を撮影して該小物品の他方の面の画像を取り込む第2撮像装置とが具備されてなる検査装置を用いて小物品の外観を検査する方法において、
前記第1検査ドラムに前記小物品を保持したまま該第1検査ドラムを複数回回転させるとともに前記第1撮像装置で自動的に繰り返し撮像し、検査処理する一方、前記第1検査ドラムから移動させた前記小物品を保持したまま該第2検査ドラムを複数回回転させるとともに前記第2撮像装置で自動的に繰り返し撮像し、検査処理することにより、繰り返し精度の確認を行うことを特徴とする。
In order to achieve the above object, the present invention employs the following configuration.
(1) The present invention includes a first inspection drum that conveys the small article by rotating while holding one surface in the thickness direction of the small article such as a tablet on the outer peripheral surface, and a lower part of the first inspection drum. A small article received from the first inspection drum and held on the outer circumferential face in a state reversed from the transport state of the first inspection drum. A second inspection drum that rotates while rotating, a first imaging device that captures an image of one surface of the small article by photographing the small article held on the outer peripheral surface of the first inspection drum, and the second inspection drum In a method for inspecting the appearance of a small article using an inspection apparatus including a second imaging device that captures an image of the other surface of the small article by photographing the small article held on the outer peripheral surface,
The first inspection drum is rotated a plurality of times while the small article is held on the first inspection drum, and the first imaging device automatically and repeatedly images and inspects, while the first inspection drum is moved from the first inspection drum. In addition, the second inspection drum is rotated a plurality of times while holding the small article, and the second image pickup device automatically and repeatedly picks up an image to perform inspection processing, thereby confirming repetition accuracy.

(2)本発明の検査装置は、錠剤等の小物品の厚さ方向いずれかの面を外周面に保持しながら回転することにより、該小物品を搬送する第1検査ドラムと、該第1検査ドラムの下側に外周面を近接させた状態に回転自在に設置され、前記第1検査ドラムから小物品を受け取って該小物品を前記第1検査ドラムの搬送状態と反転させた状態で外周面に保持しながら回転する第2検査ドラムと、前記第1検査ドラムの外周面に保持された小物品を撮影して該小物品の一方の面の画像を取り込む第1撮像装置と、前記第2検査ドラムの外周面に保持された小物品を撮影して該小物品の他方の面の画像を取り込む第2撮像装置とが具備されてなり、前記第1検査ドラムにおいて外周面に小物品を保持しながら前記第1撮像装置により該小物品の一方の面の画像を取り込んだ後、該小物品を前記第2検査ドラムに受け渡すことなく第1検査ドラムに保持したまま複数回回転させながら繰り返し前記第1撮像装置により小物品の一方の面の画像を取り込む運転動作と、前記第2検査ドラムにおいて外周面に小物品を保持しながら前記第2撮像装置により該小物品の他方の面の画像を取り込んだ後、該小物品を他に排出することなく第2検査ドラムに保持したまま複数回回転させながら繰り返し前記第2撮像装置により小物品の他方の面の画像を取り込む運転動作とを切り替え自在に構成したことを特徴とする。 (2) The inspection apparatus of the present invention includes a first inspection drum that conveys the small article by rotating while holding any surface in the thickness direction of the small article such as a tablet on the outer peripheral surface; It is rotatably installed in a state where the outer peripheral surface is close to the lower side of the inspection drum, receives the small article from the first inspection drum, and the outer periphery in a state where the small article is reversed from the conveying state of the first inspection drum. A second inspection drum that rotates while being held on a surface, a first imaging device that captures an image of one surface of the small article by photographing a small object held on the outer peripheral surface of the first inspection drum, and the first And a second imaging device that captures an image of the other surface of the small article by photographing the small object held on the outer peripheral surface of the inspection drum, and the small inspection object is disposed on the outer peripheral surface of the first inspection drum. One of the small articles is held by the first imaging device while being held. After the image is captured, the first image pickup device repeatedly images the image of one surface of the small article while being rotated a plurality of times while being held on the first inspection drum without being transferred to the second inspection drum. Operation to capture, and after the second imaging device captures an image of the other surface of the small article while holding the small article on the outer peripheral surface of the second inspection drum, the small article is not discharged to the other. While being held on the second inspection drum, it is configured to be switchable between an operation of repeatedly capturing the image of the other surface of the small article by the second imaging device while rotating a plurality of times.

(3)本発明において、錠剤等の小物品の厚さ方向いずれかの面を外周面に保持しながら回転することにより、該小物品を搬送する第1検査ドラムと、該第1検査ドラムの下側に外周面を近接させた状態に回転自在に設置され、前記第1検査ドラムから小物品を受け取って該小物品を前記第1検査ドラムの搬送状態と反転させた状態で外周面に保持しながら回転する第2検査ドラムと、前記第1検査ドラムの外周面に保持された小物品を撮影して該小物品の一方の面の画像を取り込む第1撮像装置と、前記第2検査ドラムの外周面に保持された小物品を撮影して該小物品の他方の面の画像を取り込む第2撮像装置とが具備されてなり、前記第1検査ドラムと第2検査ドラムの外周面に個々に複数の吸引部が形成され、前記吸引部から空気を吸引することにより前記複数の吸引部を介して発生する吸引力によって小物品を前記第1検査ドラムの外周面あるいは前記第2検査ドラムの外周面に吸着自在に構成され、前記第1検査ドラムと第2検査ドラムの個々の内部が各検査ドラムの周方向に複数の領域に区分され、各領域毎に独自に空気を吸引するか否かを切り替え自在に構成され、前記第1検査ドラムの外周面の上部側において被検査用の小物品が供給される位置から前記第2検査ドラムとの対向する位置までの領域とその他の領域が個別吸引切り替え自在な領域として区分され、前記第2検査ドラムの外周面の上部側において前記第1検査ドラムとの対向位置から第2検査ドラムの下端部側までの領域とその他の領域とが個別吸引切り替え自在な領域として区分されるとともに、前記第1検査ドラムの外周面から前記第2検査ドラムの外周面に前記小物品を受け渡して検査する運転動作と、前記第2検査ドラム側に前記小物品を受け渡すことなく第1検査ドラムの外周面のみに前記小物品を吸引しながら前記第1検査ドラムを回転させる運転動作と、前記第2検査ドラムの外周面のみに前記小物品を吸引しながら前記第2検査ドラムを回転させる運転動作とが切り替え自在に構成されてなることを特徴とする構成でも良い。 (3) In the present invention, the first inspection drum that conveys the small article by rotating while holding any surface in the thickness direction of the small article such as a tablet on the outer peripheral surface, and the first inspection drum A small article is received from the first inspection drum, and the small article is held on the outer circumference in a state reversed from the conveying state of the first inspection drum. A second inspection drum that rotates while rotating, a first imaging device that captures an image of one surface of the small article by photographing a small article held on the outer peripheral surface of the first inspection drum, and the second inspection drum And a second imaging device that captures an image of the other surface of the small article and captures an image of the other surface of the small article, and the outer peripheral surfaces of the first inspection drum and the second inspection drum are individually provided. A plurality of suction portions are formed in the suction portion, and air is sucked from the suction portions. Thus, a small article can be adsorbed to the outer peripheral surface of the first inspection drum or the outer peripheral surface of the second inspection drum by a suction force generated through the plurality of suction portions. 2 Each inside of the inspection drum is divided into a plurality of regions in the circumferential direction of each inspection drum, and is configured to be able to switch whether air is independently sucked for each region, and the outer peripheral surface of the first inspection drum An area from a position where a small article to be inspected is supplied to a position facing the second inspection drum and other areas on the upper side of the second inspection drum are divided as areas where individual suction can be switched. The area from the position facing the first inspection drum to the lower end side of the second inspection drum on the upper side of the outer peripheral surface and the other areas are divided as areas where individual suction can be switched, and The operation of delivering and inspecting the small article from the outer peripheral surface of the first inspection drum to the outer peripheral surface of the second inspection drum, and the operation of the first inspection drum without delivering the small article to the second inspection drum side An operation for rotating the first inspection drum while sucking the small article only on the outer peripheral surface, and an operation for rotating the second inspection drum while sucking the small article only on the outer peripheral surface of the second inspection drum May be configured to be freely switchable.

(4)本発明において、前記第1検査ドラムと第2検査ドラムが、これらの各ドラムの外周面を構成する筒体と、該筒体の中心部に配置されて前記筒体を回転自在に支持する支持軸と、該支持軸外部側に取り付けられて前記筒体の内部側において前記各ドラムの回転と別個に所定の位置に保持され、前記各ドラムの内周面に当接して前記筒体の内部空間を複数の個別吸引切り替え自在な領域に区分する複数の仕切板とを具備してなることを特徴とする構成でも良い。 (4) In the present invention, the first inspection drum and the second inspection drum are arranged in the cylindrical body constituting the outer peripheral surface of each of these drums, and the central part of the cylindrical body so that the cylindrical body can be freely rotated. A supporting shaft to be supported, and is attached to the outer side of the supporting shaft and held at a predetermined position separately from the rotation of each drum on the inner side of the cylinder, and comes into contact with the inner peripheral surface of each drum to contact the cylinder A configuration characterized by comprising a plurality of partition plates that divide the internal space of the body into a plurality of regions capable of switching individual suction is possible.

本発明によれば、第1検査ドラムの外周面に保持した小物品の一側の面、例えば表面を第1撮像装置により撮像して検査することができるとともに、裏返して第2検査ドラムの外周面に保持した小物品の他方の面、例えば裏面を第2撮像装置により撮像して検査することができるので、第1検査ドラムから第2検査ドラムに小物品を順次受け渡しつつ個々に撮像することで、小物品の表裏面の外観検査ができる。
また、小物品を保持したまま第1検査ドラムを複数回回転させながら第1撮像装置により繰り返し小物品の一方の面を撮像することにより、小物品の一方の面の検査の繰り返し精度の確認ができる。更に、小物品を保持したまま第2検査ドラムを複数回回転させながら第2撮像装置により繰り返し小物品の他方の面を撮像することにより、小物品の他方の面の検査の繰り返し精度の確認ができる。
According to the present invention, one side surface, for example, the surface of a small article held on the outer peripheral surface of the first inspection drum can be imaged and inspected by the first imaging device, and the outer periphery of the second inspection drum can be turned over. Since the other surface of the small article held on the surface, for example, the back surface can be imaged and inspected by the second imaging device, the small articles are individually imaged while being sequentially transferred from the first inspection drum to the second inspection drum. Thus, the appearance inspection of the front and back surfaces of the small article can be performed.
In addition, by repeatedly imaging one surface of the small article with the first imaging device while rotating the first inspection drum a plurality of times while holding the small article, it is possible to confirm the repeatability of the inspection of the one surface of the small article. it can. Further, by repeatedly imaging the other surface of the small article with the second imaging device while rotating the second inspection drum a plurality of times while holding the small article, the repeatability of the inspection of the other surface of the small article can be confirmed. it can.

第1検査ドラムと第2検査ドラムの具体構造として、それらの外周面に吸引部を形成し、これらの吸引部を介して小物品を両検査ドラムの外周面に吸着支持することができる。また、第1検査ドラムと第2検査ドラムの内部を複数の領域に区分して各領域毎を介する吸着状態を制御する機構とすることにより、第1検査ドラムと第2検査ドラムに小物品を移しながら小物品を検査する動作と、第1検査ドラムにおいて独自に小物品を吸着したまま一方の面の検査の繰り返し精度の確認を行う動作と、第2検査ドラムにおいて独自に小物品を吸着したまま他方の面の検査の繰り返し精度の確認を行う動作とを実現することができるようになる。   As a specific structure of the first inspection drum and the second inspection drum, suction portions can be formed on the outer peripheral surfaces thereof, and small articles can be sucked and supported on the outer peripheral surfaces of both inspection drums via these suction portions. In addition, by dividing the interior of the first inspection drum and the second inspection drum into a plurality of regions and controlling the suction state through each region, small articles are placed on the first inspection drum and the second inspection drum. The operation of inspecting small articles while moving, the operation of confirming the repeatability of inspection of one surface while the small articles are adsorbed independently on the first inspection drum, and the operation of adhering the small articles uniquely on the second inspection drum The operation of confirming the repeatability of the inspection of the other surface can be realized.

以下、本発明の実施の形態を図面を用いて説明するが、本発明は以下に説明する各実施の形態に制限されるものではない。
図1〜図4は本発明に係る小物品の外観検査装置の第1実施形態の全体構成を示す図であり、図5〜図7は該外観検査装置に備えられる表面検査ドラム及び裏面検査ドラムの詳細構造を示す図、図8〜図13は外観検査装置の動作と部分構造について説明するための図である。
本実施形態の外観検査装置Aは、ステージ1に立設された壁部2により水平に支持されて上下に隣接配置された表面(第1)検査ドラム5及び裏面(第2)検査ドラム6と、前記表面検査ドラム5に錠剤等の小物品Sを供給するための供給装置7と、前記表面検査ドラム5の側方側に配置された表面(第1)撮像装置8と、前記裏面検査ドラム6の側方側に配置された裏面(第2)撮像装置9と、前記裏面検査ドラム6からの検査後の良品を排出するための排出コンベア10と、前記裏面検査ドラム6からの検査後の不良品を回収するための受部11と、前記裏面検査ドラム6からの排出不良となった小物品Sを受けるための排出不良品の受部12とを主体として構成されている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments described below.
1 to 4 are views showing the overall configuration of a first embodiment of an appearance inspection apparatus for small articles according to the present invention. FIGS. 5 to 7 are a front inspection drum and a back inspection drum provided in the appearance inspection apparatus. FIG. 8 to FIG. 13 are diagrams for explaining the operation and partial structure of the appearance inspection apparatus.
The appearance inspection apparatus A of the present embodiment includes a front surface (first) inspection drum 5 and a back surface (second) inspection drum 6 that are horizontally supported by a wall portion 2 erected on a stage 1 and arranged adjacent to each other vertically. , A supply device 7 for supplying a small article S such as a tablet to the surface inspection drum 5, a surface (first) imaging device 8 disposed on a side of the surface inspection drum 5, and the back surface inspection drum 6, a back surface (second) imaging device 9 disposed on the side of the paper 6, a discharge conveyor 10 for discharging a non-defective product after inspection from the back surface inspection drum 6, and after inspection from the back surface inspection drum 6 The receiving unit 11 for collecting defective products and the receiving unit 12 for defective discharge products for receiving small articles S that have been discharged from the back surface inspection drum 6 are mainly configured.

前記表面検査ドラム5の詳細構造は、図2、図5または図6に示す如く、壁部2の裏面側に取り付けられた支持壁2Aに対して筒型の支持部材15と、これを貫通する支持軸16が水平に支持され、この支持軸16に支持された状態で筒体17が回転自在に装着され、この筒体17の先端側に筒体開口部を閉じる蓋部材18が設けられていることにより表面検査ドラム5が概略構成されている。
前記支持軸16は大径の基部21とその先端側に段部22を介して突出形成されている小径の取付軸23とからなり、段部22の部分に円板状の取付板25、26が取付軸23と直角方向に装着され、一方の取付板25には支持軸16の上部側に位置する細長い幅狭の物差し状の仕切板27が基部21の上部に沿うように、他方の取付板26には支持軸の下部側に位置するように細長い幅狭の物差し状の仕切板28が基端部21の下部に沿うようにそれぞれ配置されている。
As shown in FIG. 2, FIG. 5 or FIG. 6, the detailed structure of the surface inspection drum 5 penetrates the cylindrical support member 15 with respect to the support wall 2A attached to the back side of the wall portion 2. The support shaft 16 is supported horizontally, and the cylindrical body 17 is rotatably mounted in a state of being supported by the support shaft 16, and a lid member 18 that closes the cylindrical body opening is provided on the distal end side of the cylindrical body 17. Thus, the surface inspection drum 5 is schematically configured.
The support shaft 16 includes a large-diameter base portion 21 and a small-diameter mounting shaft 23 that protrudes from the distal end of the support shaft 16 via a step portion 22. Disk-shaped mounting plates 25, 26 are formed on the step portion 22. Is mounted in a direction perpendicular to the mounting shaft 23, and one mounting plate 25 is attached to the other so that a narrow and narrow ruler-shaped partition plate 27 positioned on the upper side of the support shaft 16 extends along the upper portion of the base 21. A narrow and narrow ruler-shaped partition plate 28 is arranged on the plate 26 along the lower portion of the base end portion 21 so as to be positioned on the lower side of the support shaft.

そして、前記支持軸16の外側を覆うように筒体17が装着され、該筒体17は支持部材15の外周側に配置されているベアリング機構29を介して回転自在に支持され、この筒体17の先端部側開口は取付軸23の先端部側に装着されている蓋部材18によって閉じられ、該蓋部材18は取付軸23に螺合されたナット型の抜止部材30により抜け止めされ、蓋部材18においてもその中心部に配置されているベアリング部材18aを介して取付軸23に軸支されて回転自在とされている。
また、支持軸16の基部21は壁部2の背面側に設けられている支持壁2Aに取り付けられ、壁部2を筒体17がクリアランスをあけて貫通しているので筒体17は回転自在に支持されるとともに、筒体17の内部には、支持軸16の基部21と筒体17の内周面との間に吸引用の空間部が形成されている。なお、仕切板27、28の外縁と筒体17の内周面とが向き合う部分にはシール材を設けるが、本実施形態の図面ではシール材を略している。
A cylindrical body 17 is mounted so as to cover the outside of the support shaft 16, and the cylindrical body 17 is rotatably supported via a bearing mechanism 29 disposed on the outer peripheral side of the support member 15. 17 is closed by a lid member 18 mounted on the distal end side of the mounting shaft 23, and the lid member 18 is retained by a nut-type retaining member 30 screwed to the mounting shaft 23. The lid member 18 is also rotatably supported by the mounting shaft 23 via a bearing member 18a disposed at the center thereof.
Further, the base portion 21 of the support shaft 16 is attached to a support wall 2A provided on the back side of the wall portion 2, and the cylindrical body 17 is rotatable because the cylindrical body 17 penetrates the wall portion 2 with a clearance. In addition, a space portion for suction is formed in the cylindrical body 17 between the base portion 21 of the support shaft 16 and the inner peripheral surface of the cylindrical body 17. In addition, although the sealing material is provided in the part which the outer edge of the partition plates 27 and 28 and the inner peripheral surface of the cylinder 17 face, the sealing material is abbreviate | omitted in drawing of this embodiment.

前記筒体17の外周面には、その周方向及び長さ方向に定間隔で複数の吸引溝(吸引部)17aが筒体17の周壁を1周するように形成され、筒体17の内部側の吸引用の空間に連通されている。また、筒体17の外周面において吸引溝17aが形成されている部分の両側にはリング突条型の突出部34が形成されていて、突出部34の先端部側に環状の緩衝部材24、24が装着されている。これらの緩衝部材24、24は樹脂やゴムなどの弾性体からなり、吸引部17aを介して後述する如く小物品Sを吸着した場合に、小物品Sの割れや欠けなどの損傷を防止する。なお、この実施形態では筒体17に4列の吸引溝17aが形成された例を示している。
また、本実施形態の場合、前記仕切板27の位置は筒体17を図1に示す如くその側面側(蓋部材18を正面とする側)から見た場合に、筒体17の開口面の円形あるいは蓋部材18の面を鉛直線と水平線により極座標的に4等分した場合、鉛直線(X軸)の近傍の位置に仕切板27と仕切板28が配置されている。
以上の構成により、筒体17の内部空間は、仕切板27、28により筒体17の周方向(表面検査ドラム5の回転方向)の通気路17A、17Bに2分割されている。更に、支持軸16の基部21にも、その周方向に2箇所、通気路17A、17Bが形成されており、これらの通気路17A、17Bは壁部2の裏面側に設けられている吸気ブロア等の吸気装置に図6(B)に示す通気ダクト17b、17cにより接続されていて、この吸気装置の動作により、前記吸引用の2分割された通気路と通気ダクトを介し、前記複数の吸引溝17aを介して筒体17の外周面に小物品Sを吸引操作できるように構成されている。
A plurality of suction grooves (suction portions) 17 a are formed on the outer peripheral surface of the cylindrical body 17 at regular intervals in the circumferential direction and the length direction so as to make one round of the peripheral wall of the cylindrical body 17. It communicates with the suction space on the side. In addition, ring protrusions 34 are formed on both sides of the portion where the suction groove 17a is formed on the outer peripheral surface of the cylindrical body 17, and an annular buffer member 24 is provided on the tip side of the protrusion 34. 24 is mounted. These buffer members 24, 24 are made of an elastic material such as resin or rubber, and prevent damage such as cracking or chipping of the small article S when the small article S is adsorbed through the suction portion 17a as will be described later. In this embodiment, an example in which four rows of suction grooves 17a are formed in the cylindrical body 17 is shown.
Further, in the case of the present embodiment, the position of the partition plate 27 is the position of the opening surface of the cylindrical body 17 when the cylindrical body 17 is viewed from the side surface side (the side having the lid member 18 as the front surface) as shown in FIG. When the surface of the circular shape or the lid member 18 is divided into four equal parts by the polar line and the horizontal line, the partition plate 27 and the partition plate 28 are arranged at a position near the vertical line (X axis).
With the above configuration, the internal space of the cylindrical body 17 is divided into two air passages 17A and 17B in the circumferential direction of the cylindrical body 17 (the rotation direction of the surface inspection drum 5) by the partition plates 27 and 28. Furthermore, two air passages 17A and 17B are formed in the base portion 21 of the support shaft 16 in the circumferential direction, and these air passages 17A and 17B are provided on the back side of the wall portion 2. 6B is connected to a plurality of suction devices via the suction passages and the suction ducts divided into two by the operation of the suction device. The small article S can be sucked to the outer peripheral surface of the cylindrical body 17 through the groove 17a.

次に、裏面検査ドラム6において、その基本構造は先の表面検査ドラム5と同等であり、その位置が表面検査ドラム5の下方に表面検査ドラム5と若干離間して回転自在に配置されている。裏面検査ドラム6においても、壁部2の中央部側に支持部材35を介して支持軸36が水平に支持され、この支持軸36に支持された状態で筒体37が回転自在に装着され、この筒体37の先端側を蓋部材38が閉じることにより裏面検査ドラム6が概略構成されている点については同等であり、その概要を図4に示す。
前記支持軸36は大径の基端部41とその先端側に段部を介して突出形成されている小径の取付軸43とからなり、段部の部分に円板状の取付板45、46が取付軸43と直角方向に装着され、一方の取付板45には支持軸36の上部側に位置する細長い幅狭の物差し状の仕切板47が支持軸36の上部に沿うように、他方の取付板46には支持軸の下部側に位置するように細長い幅狭の物差し状の仕切板48が支持軸36の下部に沿うように配置されている。
そして、前記支持軸36の外側を覆うように筒体37が装着され、該筒体37は支持部材35側に配置されているベアリング機構39を介して回転自在に支持され、この筒体37の先端部側開口は取付軸33の先端部側に装着されている蓋部材38によって閉じられ、該蓋部材38は取付軸33に螺合されたナット型の抜止部材40により抜け止めされている。なお、裏面検査ドラム6の筒体37の外周面に形成されている吸引溝37aの形成位置も先の表面検査ドラム5の場合と同等である。
Next, the basic structure of the back surface inspection drum 6 is the same as that of the front surface inspection drum 5, and the position of the back surface inspection drum 6 is disposed below the surface inspection drum 5 and slightly spaced from the surface inspection drum 5. . Also in the back surface inspection drum 6, a support shaft 36 is horizontally supported on the central portion side of the wall portion 2 via a support member 35, and a cylindrical body 37 is rotatably mounted while being supported by the support shaft 36. The point that the back surface inspection drum 6 is roughly configured by closing the front end side of the cylindrical body 37 by the lid member 38 is the same, and an outline thereof is shown in FIG.
The support shaft 36 includes a large-diameter base end portion 41 and a small-diameter attachment shaft 43 that protrudes from the distal end of the support shaft 36 via a step portion. Disk-like attachment plates 45 and 46 are formed on the step portion. Is mounted in a direction perpendicular to the mounting shaft 43, and one of the mounting plates 45 has a narrow and narrow ruler-shaped partition plate 47 positioned on the upper side of the support shaft 36 along the upper portion of the support shaft 36. A narrow and narrow ruler-shaped partition plate 48 is arranged along the lower portion of the support shaft 36 so as to be positioned on the lower side of the support shaft.
A cylindrical body 37 is mounted so as to cover the outside of the support shaft 36, and the cylindrical body 37 is rotatably supported via a bearing mechanism 39 disposed on the support member 35 side. The opening on the distal end side is closed by a lid member 38 attached to the distal end side of the mounting shaft 33, and the lid member 38 is prevented from being detached by a nut-type retaining member 40 screwed onto the mounting shaft 33. In addition, the formation position of the suction groove 37 a formed on the outer peripheral surface of the cylindrical body 37 of the back surface inspection drum 6 is also the same as that of the front surface inspection drum 5.

この実施形態の裏面検査ドラム6において先の表面検査ドラム5と異なっているのは、仕切板47、48の設置角度である。
即ち、本実施形態の場合、仕切板47の位置は筒体37を図1に示す如くその側面側(蓋部材38を正面とする側)から見た場合に、筒体37の開口面の円形あるいは蓋部材38の面を鉛直線と水平線により極座標的に4等分した場合、鉛直線(X軸)の近傍に仕切板47と仕切板48が配置されている。
What is different from the front surface inspection drum 5 in the back surface inspection drum 6 of this embodiment is the installation angle of the partition plates 47 and 48.
That is, in the case of this embodiment, the position of the partition plate 47 is the circular shape of the opening surface of the cylindrical body 37 when the cylindrical body 37 is viewed from the side surface side (the side with the lid member 38 as the front surface) as shown in FIG. Alternatively, when the surface of the lid member 38 is divided into four equal parts in a polar coordinate by a vertical line and a horizontal line, the partition plate 47 and the partition plate 48 are disposed in the vicinity of the vertical line (X axis).

ところで、図1に示す表面検査ドラム5の左側方側には、ホッパ50に接続されてホッパ50の内部に収容されている錠剤等の小部品を先の表面検査ドラム5の上部側へ供給するための搬送装置7が組み込まれ、この搬送装置7に備えられている傾斜式のシュート52により錠剤、ハードカプセル、ソフトカプセル、飴、キャンディー、チョコレートなどの小物品Sが表面検査ドラム5に供給され、対象の検査小物品とされる。
また、シュート52の先端部には、先の表面検査ドラム5の外周部側の突出部34に位置を合わせて小物品Sを案内するためのレール部52aが複数設けられている。この形態では表面検査ドラム5に突出部34が4本設けられているので、この数に合わせるように傾斜シュート52に4本のレール部52aが設けられている。
Incidentally, on the left side of the surface inspection drum 5 shown in FIG. 1, small parts such as tablets connected to the hopper 50 and housed in the hopper 50 are supplied to the upper side of the surface inspection drum 5. A small-sized article S such as a tablet, a hard capsule, a soft capsule, a bag, a candy, and chocolate is supplied to the surface inspection drum 5 by an inclined chute 52 provided in the conveyance device 7. The inspection small article.
In addition, a plurality of rail portions 52 a for guiding the small article S in alignment with the protruding portion 34 on the outer peripheral portion side of the previous surface inspection drum 5 are provided at the tip portion of the chute 52. In this embodiment, four protrusions 34 are provided on the surface inspection drum 5, so that four rail portions 52 a are provided on the inclined chute 52 so as to match this number.

図1に示す表面検査ドラム5の右側方側には、表面検査ドラム5の外周面を観察することができるCCDカメラ等の表面撮像装置8がフレーム53に支持されて設置され、該表面撮像装置8が撮影する範囲を照明する照明装置56、57が表面検査ドラム5に対向して配置されている。また、裏面検査ドラム6の左側方側には、裏面検査ドラム6の外周面を観察することができるCCDカメラ等の表面撮像装置9がフレーム54に支持されて設置され、該表面撮像装置9が撮影する範囲を照明する照明装置58、59が裏面検査ドラム6に対向して配置されている。
次に、図1に示す如く裏面検査ドラム6の中央下方側には、逆V字型の搬送通路60が設置され、該搬送路60の分岐部分に通路切換弁61が組み込まれるとともに、搬送路60の左側の分岐路62側に排出不良品を受けるための受部12が接続され、搬送路60の右側の分岐路63側に良品搬出用のコンベア装置10が接続されている。
On the right side of the surface inspection drum 5 shown in FIG. 1, a surface imaging device 8 such as a CCD camera that can observe the outer peripheral surface of the surface inspection drum 5 is supported by a frame 53 and installed. Illumination devices 56 and 57 that illuminate a range to be photographed by 8 are arranged to face the surface inspection drum 5. Further, on the left side of the back surface inspection drum 6, a surface imaging device 9 such as a CCD camera capable of observing the outer peripheral surface of the back surface inspection drum 6 is installed by being supported by a frame 54. Illumination devices 58 and 59 that illuminate the area to be photographed are arranged to face the back surface inspection drum 6.
Next, as shown in FIG. 1, an inverted V-shaped conveyance path 60 is installed on the lower side of the center of the back surface inspection drum 6, and a path switching valve 61 is incorporated in a branch portion of the conveyance path 60. The receiving unit 12 for receiving a defective discharge product is connected to the left branch path 62 side of 60, and the non-defective product carrying conveyor device 10 is connected to the right branch path 63 side of the transport path 60.

一方、前記表面検査ドラム5と裏面検査ドラム6が支持されている壁部2の裏面側には、図2、図3に示す如く表面検査ドラム5と裏面検査ドラム6の回転駆動用のモータ65が設けられるとともに、壁部2の裏面側には表面検査ドラム5の支持軸16に連動するタイミングプーリ66と裏面検査ドラム6の支持軸36に連動するタイミングプーリ67とが設けられていて、これらのプーリ66、67と前記モータ65の回転軸に巻き掛けられているタイミングベルト68の作用により先の表面検査ドラム5と裏面検査ドラム6との同期逆回転動作をモータ65により行うことができるように構成されている。   On the other hand, on the back surface side of the wall portion 2 on which the front surface inspection drum 5 and the back surface inspection drum 6 are supported, a motor 65 for rotationally driving the front surface inspection drum 5 and the back surface inspection drum 6 as shown in FIGS. And a timing pulley 66 interlocking with the support shaft 16 of the surface inspection drum 5 and a timing pulley 67 interlocking with the support shaft 36 of the back inspection drum 6 are provided on the back surface side of the wall 2. The motor 65 can perform the synchronous reverse rotation operation of the front surface inspection drum 5 and the back surface inspection drum 6 by the action of the pulleys 66 and 67 and the timing belt 68 wound around the rotation shaft of the motor 65. It is configured.

次に、前記表面検査ドラム5と裏面検査ドラム6における筒体17、37の内部空間の区分状態の一例と各ドラム5、6の回転方向を図8と図9に簡略的に示す。
図9は表面検査ドラム5と裏面検査ドラム6を図1に示す状態と同方向から見た状態を示す簡略図であり、図9に示す如く表面検査ドラム5は時計方向に回転するのに対し、裏面検査ドラム6は反時計方向に回転する。ここで表面検査ドラム5の筒体17の内部空間は仕切板27、28により図9の右側に形成される第1の空間K1と左側に形成される第2の空間K2とに区分されており、裏面検査ドラム6の筒体37の内部空間は仕切板47、48により図9の右側に形成される第3の空間K3と左側に形成される第4の空間K4とに区分されている。これらの空間K1、K2、K3、K4は個々に前述の吸引装置に接続されていて、各空間毎に個別に吸気するか、排気するか、排気も吸引もしない状態とするかを適宜選択してこれらの内の所望の状態にできるように構成されている。なお、各ドラムの内部は具体的には前記の如く通気路17Aとそれに連通する通気ダクト17bと、通気路17Bとそれに連通する通気ダクト17cに区分された形態で空間K1〜K4を構成している。
Next, an example of the division state of the internal spaces of the cylindrical bodies 17 and 37 in the front surface inspection drum 5 and the back surface inspection drum 6 and the rotation directions of the drums 5 and 6 are simply shown in FIGS.
FIG. 9 is a simplified diagram showing a state in which the front inspection drum 5 and the rear inspection drum 6 are viewed from the same direction as that shown in FIG. 1, whereas the front inspection drum 5 rotates clockwise as shown in FIG. The back inspection drum 6 rotates counterclockwise. Here, the internal space of the cylindrical body 17 of the surface inspection drum 5 is divided by the partition plates 27 and 28 into a first space K1 formed on the right side in FIG. 9 and a second space K2 formed on the left side. The inner space of the cylindrical body 37 of the back inspection drum 6 is divided by the partition plates 47 and 48 into a third space K3 formed on the right side in FIG. 9 and a fourth space K4 formed on the left side. These spaces K1, K2, K3, and K4 are individually connected to the above-described suction device, and each space is appropriately selected to be individually inhaled, exhausted, or not exhausted or sucked. These are configured so as to be in a desired state. Specifically, the interior of each drum constitutes the spaces K1 to K4 in the form of the air passage 17A and the air duct 17b communicating with the air passage 17A and the air passage 17B and the air duct 17c communicating therewith as described above. Yes.

次に、前記構成の表面検査ドラム5と裏面検査ドラム6を用いて錠剤等の小部品Sの外観を検査する動作と方法について説明する。
表面検査ドラム5を図9に示す如く時計方向に回転させ、裏面検査ドラム6を反時計方向に回転させるとともに、第1の空間K1において吸引溝17aを介して吸気を行い、第2の空間K2において吸気を行わず、第3の空間K3において吸気を行わず、第4の空間K4において吸気を行うようにする。
この状態においてシュート52から順次小物品Sを表面検査ドラム5に供給すると、小物品Sは表面検査ドラム5の各吸引溝17aに吸引されて、筒体17の吐出部34上に吸着支持される。(図11、図5(A)参照)
この状態で表面検査ドラム5の回転とともにその外周面に吸着された小物品Sが表面撮像装置8の前方に移動すると、照明装置56、57で明るく照らされた状態となり、小物品Sの表面側を鮮明に撮像することができて小物品Sの表面状態の検査ができる。
表面検査ドラム5の回転とともに小物品Sは筒体17の外周面とともに下降し、裏面検査ドラム6の外周面に接近する。ここで、筒体17の内部に区画されている空間K1は吸気状態であるが、空間K2は吸引されていない状態であるので、仕切板28の位置を小物品Sが通過した後は落下できる状態となる。ここで小物品Sが仕切板28を越えて空間K2の領域に移動した時点で裏面検査ドラム6の筒体37側の空間K4は吸気状態にあり、複数の吸引溝37a側では吸引可能であるので、小物品Sは裏面検査ドラム6側に裏返し状態に移動され、裏面検査ドラム6の外周面に吸着支持されたまま反時計方向に回転移動する。裏面検査ドラム6の外周面に沿って小物品Sが移動する間、小物品Sが裏面撮像装置9の前方に移動すると、照明装置58、59で明るく照らされた状態となり、小物品Sの裏面側を鮮明に撮像することができて小物品Sの裏面状態の検査ができる。
Next, an operation and method for inspecting the appearance of a small part S such as a tablet using the surface inspection drum 5 and the back surface inspection drum 6 having the above-described configuration will be described.
As shown in FIG. 9, the front surface inspection drum 5 is rotated clockwise, the back surface inspection drum 6 is rotated counterclockwise, and air is sucked through the suction groove 17a in the first space K1, and the second space K2. Intake is not performed in the third space K3, and intake is not performed in the fourth space K4.
In this state, when the small articles S are sequentially supplied from the chute 52 to the surface inspection drum 5, the small articles S are sucked into the suction grooves 17 a of the surface inspection drum 5 and sucked and supported on the discharge portion 34 of the cylindrical body 17. . (See FIG. 11 and FIG. 5 (A))
In this state, when the small article S adsorbed on the outer peripheral surface of the surface inspection drum 5 moves in front of the surface imaging device 8 with the rotation of the surface inspection drum 5, it is brightly illuminated by the lighting devices 56 and 57. The surface state of the small article S can be inspected.
With the rotation of the front inspection drum 5, the small article S descends with the outer peripheral surface of the cylindrical body 17 and approaches the outer peripheral surface of the back inspection drum 6. Here, since the space K1 partitioned inside the cylindrical body 17 is in an intake state, but the space K2 is not sucked, it can fall after the small article S passes through the position of the partition plate 28. It becomes a state. Here, when the small article S moves over the partition plate 28 to the area of the space K2, the space K4 on the cylindrical body 37 side of the back inspection drum 6 is in an intake state, and suction is possible on the side of the plurality of suction grooves 37a. Therefore, the small article S is moved to the reverse side toward the back inspection drum 6 and is rotated counterclockwise while being sucked and supported by the outer peripheral surface of the back inspection drum 6. While the small article S moves along the outer peripheral surface of the back inspection drum 6, when the small article S moves in front of the back surface imaging device 9, it is brightly illuminated by the lighting devices 58 and 59, and the back surface of the small article S The side can be clearly imaged, and the back surface state of the small article S can be inspected.

次に、表面検査ドラム5の検査精度を確認する動作について説明する。
検査条件の設定には、小物品Sを照明する際の照度、小物品Sの移動速度、換言すると表面検査ドラム5と裏面検査ドラム6の回転速度、測定時の温度、日間変動、ロット変動などを考慮し、種々形状や大きさ種々重量の小物品Sに対してどの種の外乱要因が影響が大きいのかを把握し、測定条件の設定出しを行う必要がある。
このような場合、従来は2つの検査ドラムに渡り小物品Sを連続して流しながら両面外観検査を繰り返し続行する試験を行わなくてはならない問題があった。その条件では小物品Sを繰り返し2つの検査ドラムに供給しつつ取り出し、手作業で再度供給する操作を繰り返すので、例えば連続検査の初期と後期において小物品Sの性状が変化するおそれが高い。例えば、測定を繰り返すうちに小物品Sに亀裂や割れを生じたり欠けを生じたりすると、元々小物品Sに不良があったのか、検査途中に不良となったのか、不明となり易く、検査精度や上述の条件設定が不明となるおそれがあった。また、小物品Sの外観検査には、異物検査、色検査、形状検査、印字検査、刻印検査、欠け検査など、種々の検査を行う必要があるので、各検査後との条件出しにおいても相当な手間がかかる問題がある。
Next, an operation for confirming the inspection accuracy of the surface inspection drum 5 will be described.
For setting the inspection conditions, the illuminance at the time of illuminating the small article S, the moving speed of the small article S, in other words, the rotational speed of the front inspection drum 5 and the rear inspection drum 6, temperature at measurement, daily fluctuation, lot fluctuation, etc. Therefore, it is necessary to determine which kind of disturbance factor has a large influence on the small articles S having various shapes and sizes and various weights, and to set measurement conditions.
In such a case, conventionally, there has been a problem that it is necessary to perform a test in which the double-sided appearance inspection is continuously repeated while the small article S is continuously flowed over two inspection drums. Under such conditions, the operation of taking out the small article S while repeatedly supplying it to the two inspection drums and supplying it again manually is repeated, so that there is a high possibility that the properties of the small article S will change, for example, in the early and late stages of the continuous inspection. For example, if the small article S is cracked or cracked or chipped while repeating the measurement, it may be unclear whether the small article S was originally defective or defective during the inspection, There was a possibility that the above-mentioned condition setting would be unclear. In addition, the appearance inspection of the small article S requires various inspections such as foreign matter inspection, color inspection, shape inspection, printing inspection, engraving inspection, chipping inspection, etc. There is a problem that takes time and effort.

これに対して本実施形態の装置では、以下の運転動作を行って繰り返し精度の確認を行う。表面検査ドラム5における検査精度及び条件出しを行うためには、図12に示すように表面検査ドラム5の空間K1とK2をいずれも吸気状態として裏面検査ドラム6の空間K3、K4をいずれも吸気の無い状態として両検査ドラム5、6を回転駆動する。また、シュート52からは繰り返し検査用の小物品Sを表面検査ドラム5が吸着可能な必要個数供給して表面検査ドラム5の外周部に吸着するものとする。この動作により小物品Sは表面検査ドラム5の外周面に吸着されたまま、回転するので、表面検査ドラム5が回転している間に表面撮像装置8により繰り返し表面検査ドラム5の小物品Sの撮像を繰り返し、表面検査ドラム5の回転数、照度、測定時の温度、撮像時のシャッタースピードやその他の条件出しを行って繰り返し精度の確認を行えば良い。
また、裏面検査ドラム6の検査精度及び条件出しを行うためには、図12に示す状態から表面検査ドラム5の空間K2を吸気しない状態に切り替えるとともに裏面検査ドラム6の空間K3、K4を吸気状態に切り替える。この動作により表面検査ドラム5側の小物品Sが裏面検査ドラム6側に順次移動するので、小物品Sが全て移動終了した後に空間K1の吸気を無くしておき、この状態で裏面検査ドラム6の回転を複数回繰り返し、裏面撮像装置9により繰り返し裏面検査ドラム6側の小物品Sの撮像を繰り返す。この間に裏面検査ドラム6の回転数、照度、測定時の温度、撮像時のシャッタースピードやその他の条件出しを行って繰り返し精度の確認を行えば良い。
裏面検査ドラム6の繰り返し精度確認終了後、空間K4の吸気状態を止めて吸気しない状態とすることにより、検査使用後の小物品Sを仕切板48の下方側に排出して搬送通路60を介して搬送コンベア10側あるいは受部12側に移動することができる。
On the other hand, in the apparatus of the present embodiment, the following driving operation is performed to check the repeatability. In order to determine the inspection accuracy and conditions in the surface inspection drum 5, as shown in FIG. 12, the spaces K1 and K2 of the surface inspection drum 5 are both in the intake state, and the spaces K3 and K4 of the back inspection drum 6 are both inhaled. Both inspection drums 5 and 6 are driven to rotate in a state where there is no air. Further, it is assumed that a necessary number of small inspection objects S that can be adsorbed by the surface inspection drum 5 is supplied from the chute 52 and adsorbed on the outer peripheral portion of the surface inspection drum 5. By this operation, the small article S rotates while being attracted to the outer peripheral surface of the surface inspection drum 5, so that the surface imaging device 8 repeatedly repeats the small article S of the surface inspection drum 5 while the surface inspection drum 5 is rotating. It is only necessary to repeat the imaging and to check the accuracy of the repetition by performing the number of rotations of the surface inspection drum 5, the illuminance, the temperature at the time of measurement, the shutter speed at the time of imaging, and other conditions.
Further, in order to perform inspection accuracy and condition determination of the back surface inspection drum 6, the state shown in FIG. 12 is switched from the state shown in FIG. 12 to the state where the space K2 of the surface inspection drum 5 is not sucked and the spaces K3 and K4 of the back surface inspection drum 6 are sucked. Switch to. By this operation, the small articles S on the front surface inspection drum 5 side sequentially move toward the back surface inspection drum 6 side. Therefore, after all the small objects S have finished moving, the suction of the space K1 is eliminated, and in this state, the back surface inspection drum 6 The rotation is repeated a plurality of times, and the imaging of the small article S on the back surface inspection drum 6 side is repeated by the back surface imaging device 9. During this time, the number of rotations of the back surface inspection drum 6, the illuminance, the temperature at the time of measurement, the shutter speed at the time of imaging, and other conditions may be determined to confirm the repeatability.
After the confirmation of the repeatability of the back surface inspection drum 6 is finished, the intake state of the space K4 is stopped and the intake state is not inhaled, whereby the small article S after inspection use is discharged to the lower side of the partition plate 48 and passed through the conveyance path 60. Then, it can move to the conveyor 10 side or the receiving unit 12 side.

以上説明した如く表面検査ドラム5側にのみ小物品Sを吸着させて表面検査ドラム5を回転駆動し、検査することで、自動的に繰り返し撮像、検査処理することが可能となり、時間と労力を大幅に削減することができ、更に、試験中に小物品Sを傷めたり、汚したりすることなく試験できる。また、裏面検査ドラム6側においても同様に、自動的に繰り返し撮像、検査処理することが可能となり、時間と労力を大幅に削減することができ、更に、試験中に小物品Sを傷めたり、汚したりすることなく試験できる。
また、小物品Sの外観検査には、異物検査、色検査、形状検査、印字検査、刻印検査、欠け検査など、種々の検査を行う必要があるので、各検査とその条件出しにおいても前述の各動作により条件出しすることができ、手間と時間を大幅に削減できる効果がある。
As described above, the small article S is adsorbed only on the surface inspection drum 5 side and the surface inspection drum 5 is rotationally driven and inspected, so that it is possible to automatically and repeatedly perform imaging and inspection processing, saving time and labor. It can be greatly reduced, and further, the test can be performed without damaging or soiling the small article S during the test. Similarly, on the back inspection drum 6 side, it is possible to automatically and repeatedly perform imaging and inspection processing, greatly reducing time and labor, and further damaging small articles S during testing, You can test without getting dirty.
In addition, since the appearance inspection of the small article S requires various inspections such as foreign matter inspection, color inspection, shape inspection, printing inspection, engraving inspection, chipping inspection, etc. Conditions can be determined by each operation, and the labor and time can be greatly reduced.

ところで、図13に示す裏面検査ドラム6の確認試験を行う場合、図12に示す表面検査ドラム5の試験後に行っても良いし、図11に示す通常検査の状態から切り替えて裏面検査ドラム6の確認試験に移行しても良い。また、図12と図13に示す状態において空間K1〜K4を吸気していない状態とする場合、排気ブロアなどの排気装置から検査ドラム5、6側に逆に排気して吸引溝から排気し、図12において吸着する必要のない裏面検査ドラム6側に小物品Sが吸着されないように、あるいは、図13において吸着する必要のない表面検査ドラム5側に小物品Sが吸着されないように操作しても良い。   By the way, when the confirmation test of the back surface inspection drum 6 shown in FIG. 13 is performed, it may be performed after the test of the front surface inspection drum 5 shown in FIG. 12, or the state of the back surface inspection drum 6 is switched from the normal inspection state shown in FIG. You may move to a confirmation test. When the spaces K1 to K4 are not sucked in the state shown in FIG. 12 and FIG. 13, the exhaust device such as an exhaust blower is exhausted to the inspection drums 5 and 6 and exhausted from the suction groove. In FIG. 12, operation is performed so that the small article S is not adsorbed on the back inspection drum 6 side that does not need to be adsorbed, or so that the small article S is not adsorbed on the surface inspection drum 5 side that does not need to be adsorbed in FIG. Also good.

図1は本発明に係る小物品の外観検査装置の実施形態を示す正面図。FIG. 1 is a front view showing an embodiment of an appearance inspection apparatus for small articles according to the present invention. 図2は同外観検査装置の平面図。FIG. 2 is a plan view of the appearance inspection apparatus. 図3は同外観検査装置の背面図。FIG. 3 is a rear view of the appearance inspection apparatus. 図4は同外観検査装置の部分断面図。FIG. 4 is a partial sectional view of the appearance inspection apparatus. 図5は同外観検査装置に備えられる表面検査ドラムを示すもので、図5(A)は縦断面図、図5(B)は正面図。FIG. 5 shows a surface inspection drum provided in the appearance inspection apparatus, FIG. 5 (A) is a longitudinal sectional view, and FIG. 5 (B) is a front view. 図6は同表面検査ドラムを示すもので、図6(A)は通気通路を主体に示すA−A線断面図、図6(B)は筒体を含む通気通路を示す縦断面図。6A and 6B show the surface inspection drum, FIG. 6A is a cross-sectional view taken along line AA mainly showing a ventilation passage, and FIG. 6B is a longitudinal sectional view showing a ventilation passage including a cylindrical body. 図7は同表面検査ドラムの背面図である。FIG. 7 is a rear view of the surface inspection drum. 図8は同外観検査装置に備えられる表面検査ドラムの概念図。FIG. 8 is a conceptual diagram of a surface inspection drum provided in the appearance inspection apparatus. 図9は同外観検査装置に備えられる表面検査ドラムと裏面検査ドラムの内部空間の位置関係を示す構成図。FIG. 9 is a configuration diagram showing the positional relationship between the internal spaces of the front inspection drum and the rear inspection drum provided in the appearance inspection apparatus. 図10は同外観検査装置に備えられる表面検査ドラムと裏面検査ドラムの配置関係を示す概念図。FIG. 10 is a conceptual diagram showing an arrangement relationship between a front inspection drum and a rear inspection drum provided in the appearance inspection apparatus. 図11は同表面検査ドラムと裏面検査ドラムに小物品を供給して検査する場合の小物品の流れを示す概念図。FIG. 11 is a conceptual diagram showing a flow of small articles when the small articles are supplied to the front surface inspection drum and the back surface inspection drum for inspection. 図12は同表面検査ドラムと裏面検査ドラムのうち、表面検査ドラムに小物品を供給して繰り返し精度の確認を行っている状態を示す概念図。FIG. 12 is a conceptual diagram showing a state in which a small article is supplied to the front surface inspection drum and the repetition accuracy is confirmed among the front surface inspection drum and the back surface inspection drum. 図13は同表面検査ドラムと裏面検査ドラムのうち、裏面検査ドラムに小物品を供給して繰り返し精度の確認を行っている状態を示す概念図。FIG. 13 is a conceptual diagram showing a state in which a small article is supplied to the back surface inspection drum and the repetition accuracy is confirmed among the front surface inspection drum and the back surface inspection drum.

符号の説明Explanation of symbols

S…小物品、5…表面(第1)検査ドラム、6…裏面(第2)検査ドラム、8…表面(第1)撮像装置、9…裏面(第2)撮像装置、17、37…筒体、17a、37a…吸引溝(吸引部)、K1、K2、K3、K4…空間、27、28、47、48…仕切板、

S ... Small article, 5 ... Front (first) inspection drum, 6 ... Back (second) inspection drum, 8 ... Front (first) imaging device, 9 ... Back (second) imaging device, 17, 37 ... Tube Body, 17a, 37a ... suction groove (suction part), K1, K2, K3, K4 ... space, 27, 28, 47, 48 ... partition plate,

Claims (4)

錠剤等の小物品の厚さ方向いずれかの面を外周面に保持しながら回転することにより、該小物品を搬送する第1検査ドラムと、該第1検査ドラムの下側に外周面を近接させた状態に回転自在に設置され、前記第1検査ドラムから小物品を受け取って該小物品を前記第1検査ドラムの搬送状態と反転させた状態で外周面に保持しながら回転する第2検査ドラムと、前記第1検査ドラムの外周面に保持された小物品を撮影して該小物品の一方の面の画像を取り込む第1撮像装置と、前記第2検査ドラムの外周面に保持された小物品を撮影して該小物品の他方の面の画像を取り込む第2撮像装置とが具備されてなる検査装置を用いて小物品の外観を検査する方法において、
前記第1検査ドラムに前記小物品を保持したまま該第1検査ドラムを複数回回転させるとともに前記第1撮像装置で自動的に繰り返し撮像し、検査処理する一方、前記第1検査ドラムから移動させた前記小物品を保持したまま該第2検査ドラムを複数回回転させるとともに前記第2撮像装置で自動的に繰り返し撮像し、検査処理することにより、繰り返し精度の確認を行うことを特徴とする小物品の外観検査方法。
By rotating while holding any surface in the thickness direction of a small article such as a tablet on the outer peripheral surface, the outer peripheral surface is brought close to the lower side of the first inspection drum and the first inspection drum for conveying the small article A second inspection which is rotatably installed in a state in which the small article is received from the first inspection drum and rotates while holding the small article on the outer peripheral surface in a state reversed from the conveying state of the first inspection drum. A drum, a first imaging device that captures an image of one surface of the small article by capturing a small article held on the outer peripheral surface of the first inspection drum, and an outer peripheral surface of the second inspection drum. In a method for inspecting the appearance of a small article using an inspection device comprising a second imaging device that photographs a small article and captures an image of the other surface of the small article,
The first inspection drum is rotated a plurality of times while the small article is held on the first inspection drum, and the first imaging device automatically and repeatedly images and inspects, while the first inspection drum is moved from the first inspection drum. In addition, the second inspection drum is rotated a plurality of times while the small article is held, and the second image pickup device automatically and repeatedly picks up an image to perform inspection processing, thereby confirming repetition accuracy. Appearance inspection method for articles.
錠剤等の小物品の厚さ方向いずれかの面を外周面に保持しながら回転することにより、該小物品を搬送する第1検査ドラムと、該第1検査ドラムの下側に外周面を近接させた状態に回転自在に設置され、前記第1検査ドラムから小物品を受け取って該小物品を前記第1検査ドラムの搬送状態と反転させた状態で外周面に保持しながら回転する第2検査ドラムと、前記第1検査ドラムの外周面に保持された小物品を撮影して該小物品の一方の面の画像を取り込む第1撮像装置と、前記第2検査ドラムの外周面に保持された小物品を撮影して該小物品の他方の面の画像を取り込む第2撮像装置とが具備されてなり、
前記第1検査ドラムにおいて外周面に小物品を保持しながら前記第1撮像装置により該小物品の一方の面の画像を取り込んだ後、該小物品を前記第2検査ドラムに受け渡すことなく第1検査ドラムに保持したまま複数回回転させながら繰り返し前記第1撮像装置により小物品の一方の面の画像を取り込む運転動作と、
前記第2検査ドラムにおいて外周面に小物品を保持しながら前記第2撮像装置により該小物品の他方の面の画像を取り込んだ後、該小物品を他に排出することなく第2検査ドラムに保持したまま複数回回転させながら繰り返し前記第2撮像装置により小物品の他方の面の画像を取り込む運転動作とを切り替え自在に構成したことを特徴とする小物品の外観検査装置。
By rotating while holding any surface in the thickness direction of a small article such as a tablet on the outer peripheral surface, the outer peripheral surface is brought close to the lower side of the first inspection drum and the first inspection drum for conveying the small article A second inspection which is rotatably installed in a state in which the small article is received from the first inspection drum and rotates while holding the small article on the outer peripheral surface in a state reversed from the conveying state of the first inspection drum. A drum, a first imaging device that captures an image of one surface of the small article by capturing a small article held on the outer peripheral surface of the first inspection drum, and an outer peripheral surface of the second inspection drum. A second imaging device that captures an image of a small article and captures an image of the other surface of the small article;
The first inspection drum captures an image of one surface of the small article while holding the small article on the outer peripheral surface of the first inspection drum, and then transfers the small article without passing it to the second inspection drum. An operation of capturing an image of one surface of a small article by the first imaging device repeatedly while rotating a plurality of times while being held on one inspection drum;
In the second inspection drum, an image of the other surface of the small article is captured by the second imaging device while holding the small article on the outer peripheral surface, and then the second inspection drum is not discharged to the second inspection drum. An appearance inspection apparatus for a small article that is configured to be switchable between an operation for capturing an image of the other surface of the small article by the second imaging device repeatedly while being rotated a plurality of times while being held.
錠剤等の小物品の厚さ方向いずれかの面を外周面に保持しながら回転することにより、該小物品を搬送する第1検査ドラムと、該第1検査ドラムの下側に外周面を近接させた状態に回転自在に設置され、前記第1検査ドラムから小物品を受け取って該小物品を前記第1検査ドラムの搬送状態と反転させた状態で外周面に保持しながら回転する第2検査ドラムと、前記第1検査ドラムの外周面に保持された小物品を撮影して該小物品の一方の面の画像を取り込む第1撮像装置と、前記第2検査ドラムの外周面に保持された小物品を撮影して該小物品の他方の面の画像を取り込む第2撮像装置とが具備されてなり、
前記第1検査ドラムと第2検査ドラムの外周面に個々に複数の吸引部が形成され、前記吸引部から空気を吸引することにより前記複数の吸引部を介して発生する吸引力によって小物品を前記第1検査ドラムの外周面あるいは前記第2検査ドラムの外周面に吸着自在に構成され、
前記第1検査ドラムと第2検査ドラムの個々の内部が各検査ドラムの周方向に複数の領域に区分され、各領域毎に独自に空気を吸引するか否かを切り替え自在に構成され、前記第1検査ドラムの外周面の上部側において被検査用の小物品が供給される位置から前記第2検査ドラムとの対向する位置までの領域とその他の領域が個別吸引切り替え自在な領域として区分され、前記第2検査ドラムの外周面の上部側において前記第1検査ドラムとの対向位置から第2検査ドラムの下端部側までの領域とその他の領域とが個別吸引切り替え自在な領域として区分されるとともに、
前記第1検査ドラムの外周面から前記第2検査ドラムの外周面に前記小物品を受け渡して検査する運転動作と、前記第2検査ドラム側に前記小物品を受け渡すことなく第1検査ドラムの外周面のみに前記小物品を吸引しながら前記第1検査ドラムを回転させる運転動作と、前記第2検査ドラムの外周面のみに前記小物品を吸引しながら前記第2検査ドラムを回転させる運転動作とが切り替え自在に構成されてなることを特徴とする小物品の外観検査装置。
By rotating while holding any surface in the thickness direction of a small article such as a tablet on the outer peripheral surface, the outer peripheral surface is brought close to the lower side of the first inspection drum and the first inspection drum for conveying the small article A second inspection which is rotatably installed in a state in which the small article is received from the first inspection drum and rotates while holding the small article on the outer peripheral surface in a state reversed from the conveying state of the first inspection drum. A drum, a first imaging device that captures an image of one surface of the small article by capturing a small article held on the outer peripheral surface of the first inspection drum, and an outer peripheral surface of the second inspection drum. A second imaging device that captures an image of a small article and captures an image of the other surface of the small article;
A plurality of suction portions are individually formed on the outer peripheral surfaces of the first inspection drum and the second inspection drum, and a small article is drawn by suction force generated through the plurality of suction portions by sucking air from the suction portion. The outer peripheral surface of the first inspection drum or the outer peripheral surface of the second inspection drum is configured to be freely adsorbed,
The interior of each of the first inspection drum and the second inspection drum is divided into a plurality of regions in the circumferential direction of each inspection drum, and is configured to be able to switch whether air is independently sucked for each region, On the upper side of the outer peripheral surface of the first inspection drum, an area from a position where a small article to be inspected is supplied to a position facing the second inspection drum and other areas are divided as areas where individual suction can be switched. In the upper part of the outer peripheral surface of the second inspection drum, the region from the position facing the first inspection drum to the lower end side of the second inspection drum and the other regions are divided as regions where individual suction can be switched. With
An operation of delivering and inspecting the small article from the outer peripheral surface of the first inspection drum to the outer peripheral surface of the second inspection drum, and the operation of the first inspection drum without delivering the small article to the second inspection drum side. An operation for rotating the first inspection drum while sucking the small article only on the outer peripheral surface, and an operation for rotating the second inspection drum while sucking the small article only on the outer peripheral surface of the second inspection drum And a small article appearance inspection device characterized by being configured to be switchable.
前記第1検査ドラムと第2検査ドラムが、これらの各ドラムの外周面を構成する筒体と、該筒体の中心部に配置されて前記筒体を回転自在に支持する支持軸と、該支持軸外部側に取り付けられて前記筒体の内部側において前記各ドラムの回転と別個に所定の位置に保持され、前記各ドラムの内周面に当接して前記筒体の内部空間を複数の個別吸引切り替え自在な領域に区分する複数の仕切板とを具備してなることを特徴とする請求項3に記載の小物品の外観検査装置。






The first inspection drum and the second inspection drum are cylinders that constitute the outer peripheral surface of each of the drums, a support shaft that is disposed at the center of the cylinder and rotatably supports the cylinder, It is attached to the outer side of the support shaft and is held at a predetermined position separately from the rotation of each drum on the inner side of the cylinder, and abuts against the inner peripheral surface of each drum so that the inner space of the cylinder is divided into a plurality of spaces. The appearance inspection apparatus for small articles according to claim 3, further comprising a plurality of partition plates that are divided into regions that can be individually switched to suction.






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US9040859B2 (en) 2009-05-01 2015-05-26 Sumitomo Electric Industries, Ltd. Detecting apparatus, removing apparatus, detecting method, and removing method
JP2019043684A (en) * 2017-08-29 2019-03-22 池上通信機株式会社 Rotary conveyance device for small-sized article, and drum unit for the same
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9040859B2 (en) 2009-05-01 2015-05-26 Sumitomo Electric Industries, Ltd. Detecting apparatus, removing apparatus, detecting method, and removing method
JP2019043684A (en) * 2017-08-29 2019-03-22 池上通信機株式会社 Rotary conveyance device for small-sized article, and drum unit for the same
US11780613B2 (en) 2021-02-24 2023-10-10 Jekson Vision Ltd Tablet inspection system manufacturing module with individual rejection method and verification of rejection

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