JP3704067B2 - Instant noodle appearance inspection equipment - Google Patents

Instant noodle appearance inspection equipment Download PDF

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Publication number
JP3704067B2
JP3704067B2 JP2001221431A JP2001221431A JP3704067B2 JP 3704067 B2 JP3704067 B2 JP 3704067B2 JP 2001221431 A JP2001221431 A JP 2001221431A JP 2001221431 A JP2001221431 A JP 2001221431A JP 3704067 B2 JP3704067 B2 JP 3704067B2
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Japan
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inspection
surface side
abnormality
inspection object
appearance
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JP2001221431A
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JP2003035675A (en
Inventor
雄次 高木
昌一 西村
秋彦 大野
勝蘭 李
千束 甲斐
忠義 寺本
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N Tech KK
Yakult Honsha Co Ltd
TOHOSHOJI KK
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N Tech KK
Yakult Honsha Co Ltd
TOHOSHOJI KK
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Description

【0001】
【発明の属する技術分野】
この発明は、即席ラーメンの外観検査装置に関する。
【0002】
【従来の技術】
即席ラーメンはウエーブがかけられた麺の塊状体よりなり、一般的には四角い平面状の立方体である。この種の即席ラーメンは連続的に自動生産されており、製品とする前にその外観検査がなされる。外観検査は、例えばフライヤーによる揚げかす等の異物の混入や、形状やウエーブあるいは色彩等の外観異常についてなされるが、この種のウエーブがかけられた麺の塊状体よりなる即席ラーメンの外観検査を自動的に行うのは極めて困難であった。
【0003】
従来のこの種外観検査は目視による検査が一般的であるが、検査人の疲労による不良品の見落としや人件費の高騰より、カメラ撮影による画像検査が試みられている。しかしながら、従来一般のカメラによる画像検査にあっては、即席ラーメンの表面に見られるウェーブのような複雑な凹凸を無数に有する被検査物において表面のウェーブにより影が発生し、この影による暗部と異物との識別が極めて困難であるという問題を有している。
【0004】
また、即席ラーメンの外観検査は、上のような異物検査のほかに、形状異常やウエーブの異常あるいは色彩の異常等についても行う必要があり、これらの外観異常検査を単一のラインで効果的にかつ効率よく行うことが切望されている。
【0005】
特に被検査物であるこの種即席ラーメンは、平面的な立方体であるのでその表裏両面の検査が不可欠である。検査ライン中において被検査物の表裏を反転させるには例えばコンベア中に傾斜等を設けて裏返しすることが考えられるが、この種の即席ラーメンにあっては衝撃によって欠け等の損傷やくずの発生を極力抑えなければならない。また、裏返し反転によって被検査物の姿勢や間隔にばらつきが生ずると、その後の検査が煩雑となる。そのため、単一ラインでの被検査物品の反転は、衝撃がなくかつ物品間の間隔及び姿勢ができるだけ一定に保持されるようにすることが好ましい。
【0006】
【発明が解決しようとする課題】
この発明はこのような点に鑑みなされたもので、被検査物であるウエーブがかけられた麺の塊状体からなる即席ラーメンの各種外観検査を単一のラインで効果的にかつ効率よく行う即席ラーメンの外観検査装置を提供しようとするものである。
【0007】
【課題を解決するための手段】
すなわち、請求項1の発明は、被検査物であるウエーブがかけられた麺の塊状体からなる即席ラーメンの外観異常及び異物を単一のコンベアラインで検査する装置であって、一定間隔で送り出された被検査物をその下面側及び上面側から照射する高周波光源を有し、前記被検査物の表面側を異なった角度から撮像する複数のカラーカメラによって得たカラー画像に基づいて形状異常、ウエーブ異常、色彩異常の各外観異常を検査する表面側外観異常検査部と、同じく前記被検査物をその下面側及び上面側から照射する赤外線光源を有し、前記被検査物の表面側を異なった角度から撮像する複数のモノクロームカメラによって得たモノクローム画像に基づいて異物を検査する表面側異物検査部とを有する第一検査ゾーンと、前記第一検査ゾーンの進行方向前方の送り渡しコンベアに接して設置され、前記被検査物の裏面側に接する半円部材と該半円部材に沿って前記被検査物の表面側に接するように張設された支持ベルト部材とを有し、前記被検査物を表裏反転して受け取りコンベアへ送り出す反転部と、前記受け取りコンベアに表裏反転して送り出された反転被検査物をその下面側及び上面側から照射する高周波光源を有し、前記反転被検査物の反転表面側を異なった角度から撮像する複数のカラーカメラによって得たカラー画像に基づいて形状異常、ウエーブ異常、色彩異常の各外観異常を検査する反転表面側外観異常検査部と、同じく前記反転被検査物をその下面側及び上面側から照射する赤外線光源を有し、前記反転被検査物の反転表面側を異なった角度から撮像する複数のモノクロームカメラによって得たモノクローム画像に基づいて異物を検査する反転表面側異物検査部とを有する第二検査ゾーンとからなることを特徴とする即席ラーメンの外観検査装置に係る。
【0008】
請求項2の発明は、請求項において、前記第一検査ゾーン及び第二検査ゾーンの手前に被検査物の姿勢及び間隔を調整する調整コンベアが設けられている即席ラーメンの外観検査装置に係る。
【0009】
【発明の実施の形態】
以下添付の図面に従ってこの発明を詳細に説明する。図1はこの発明の一実施例を示す検査ゾーンの概略を表す側面図、図2は被検査物の外観不良例を表す模式図、図3は外観検査装置の全体を表す概略平面図、図4は図3の第二検査ゾーンの側面図、図5は図3の反転部の側面図、図6は反転部の他の例を示す側面図、図7は図3の調整コンベアの平面図である。
【0010】
図に示す実施例において、被検査物Wはウエーブがかけられた麺の塊状体からなる即席ラーメンである。まず、図1に示したように、被検査物Wをその下面側及び上面側から高周波光源11,12により照射して撮像したカラー画像に基づいて形状異常、ウエーブ異常、色彩異常の各外観異常を検査する外観異常検査ステップS1と、同じく前記被検査物Wをその下面側及び上面側から赤外線光源14,15により照射して撮像したモノクローム画像に基づいて異物を検査する異物検査ステップS2とからなることを特徴とする。図の符号13(13a,13b,13c)はカラーカメラ、16(16a,16b,16c)はモノクロームカメラ、17は光透過性のある半透明コンベア、18は不良品排出手段、19はローラー、Hはカバーである。
【0011】
図2の各図は被検査物Wの外観不良例を表すカメラ画像の模式図であるが、前記外観異常検査ステップS1においては、カラーカメラ13(13a,13b,13c)によりカラー画像を取り込み、公知の手法により「赤・緑・青」のRGBカラーに変換し、公知の画像処理手法に従い、平滑化、二値化等の光学的検査が行われる。ここで検査される外観異常は、図2の(A)ないし(D)に示すように、被検査物Wの一部が欠損した欠け21a及び被検査物Wの一部に麺が余分に張り出したバリ21b等の形状異常21と、麺のウエーブ不良により麺と麺に隙間が生じたウエーブ異常22、麺に色ムラが見られる色彩異常23がある。
【0012】
異物検査ステップS2においては、モノクロームカメラ16(16a,16b,16c)によりモノクローム画像を取り込み、公知の画像処理手法に従い、二値化等の光学的検査が行われる。赤外線光源14,15を用いて上下から被検査物Wに照射する目的は、赤外線光は被検査物Wの正常領域を透過し、被検査物Wのウエーブの凹凸により生じる影を消失させるからである。また、モノクローム画像を用いることによって、表面のウェーブによる影と黒い異物(揚げかす等)とが明瞭に識別される。図2の(E)に示すように、被検査物Wの下面側及び上面側から赤外線光源14,15により照射して撮像したモノクローム画像にあっては、赤外線光による強い透過光及び反射光が被検査物Wに対し照射される一方において、赤外線光は揚げかす等の黒い異物を透過することはできず、異物31と判別することが可能である。
被検査物Wにおいて外観異常又は異物が検出された場合は不良品としてエジェクタ等の不良品排出手段18によりコンベア17上から排除される。
【0013】
上に述べた外観検査方法にあっては、被検査物はウエーブのかけられた麺の塊状体からなる表裏面を有するものであるから、前記外観異常検査ステップS1と異物検査ステップS2が、前記被検査物Wの塊状体の表面側W1とこれを裏返し反転した反転表面側W2の両面側についても行われることが好ましい。
以下、請求項及びとして規定した装置発明とともに、さらに詳細に説明する。
【0014】
図3は請求項の発明に係る外観検査装置40の一実施例を示す全体の概略平面図であって、前記した被検査物Wである麺の塊状体からなる即席ラーメンの表面側及び裏面側のそれぞれについて、外観異常及び異物を単一のコンベアラインにて検査するものである。この外観検査装置40は、被検査物Wの表面側を検査する第一検査ゾーンS、反転部R、被検査物Wの裏面側を検査する第二検査ゾーンTより構成される。図3の符号41は調整コンベア、42は送り渡しコンベア、43は受け取りコンベア、Dは金属検出器である。
【0015】
ここで、第一検査ゾーンSと第二検査ゾーンTでは上述した外観検査方法による外観異常検査ステップと異物検査ステップが採用されている。なお、図3の第1検査ゾーンSは図1と同一構成であり、第2検査ゾーンTは図1とカメラの配置位置のみが異なる。
【0016】
まず被検査物Wの表面側を検査する第1検査ゾーンSについて説明すると、既に図1に図示し説明したように、表面側外観異常検査部S1には、一定間隔で送り出された被検査物Wをその下面側及び上面側から照射する高周波光源11,12、及び前記被検査物Wの表面側W1を異なった角度から撮像する複数のカラーカメラ13a,13b,13cが設置される。そして、前記したように、このカラーカメラ13a,13b,13cによって得たカラー画像に基づいて形状異常21、ウエーブ異常22、色彩異常23の各外観異常が検査される。
【0017】
表面側異物検査部S2には、同じく前記被検査物Wをその下面側及び上面側から照射する赤外線光源14,15、及び前記被検査物Wの表面側W1を異なった角度から撮像する複数のモノクロームカメラ16a,16b,16cが設置される。そして、前記したように、このモノクロームカメラ16a,16b,16cによって得たモノクローム画像に基づいて異物31の有無が検査される。
【0018】
第一検査ゾーンSにおいて、高周波光源11,12は公知の蛍光灯よりなり、下側の光源11は棒状の蛍光灯を略正方形状に並置したものであり、上側の高周波光源12は環状蛍光灯が用いられている。また、赤外線光源14,15は、公知の赤外線を発する発光ダイオードからなり、前記と同様に、下側光源14は発光ダイオードを略正方形状に敷設し、上側光源15は該発光ダイオードを略環状に敷設する。上側高周波光源12及び上側赤外線光源15を環状に形成することにより、被検査物Wの直上に位置するカラーカメラ13b及びモノクロームカメラ16bの撮像が容易となるほか、被検査物Wを近接した位置から十分に照射することが可能となる。後述する第二検査ゾーンTにおいても同様である。
【0019】
また、第一検査ゾーンSにおいて、外観異常検査部S1のカラーカメラ13は、被検査物Wに対して、進行方向の前側カメラ13a,直上カメラ13b,後側13cとして配置される。異物検査部S2のモノクロームカメラ16は、被検査物Wの進行方向に対して、右側面側カメラ16a、直上カメラ16b、左側面側カメラ16cとして配置される。なお、後述する第二検査ゾーンでは、これと逆のカメラ配置となる。
【0020】
反転部Rは、図3及び図5に図示のように、前記第一検査ゾーンSの進行方向前方の送り渡しコンベア42に接して設置され、前記被検査物Wの裏面側W2に接する半円部材50と該半円部材50に沿って前記被検査物Wの表面側W1に接するように張設された支持ベルト部材60とを有し、前記被検査物Wを表裏反転して受け取りコンベア43へ送り出す機構である。
【0021】
すなわち、前記第一検査ゾーンSを通過した被検査物Wは、次の裏面側を検査する第二検査ゾーンTのために裏返し反転される。図5のように、被検査物Wが送り渡しコンベア42の前端部42pに達すると、該被検査物Wの表面側W1に半円下側方向uに回転する支持ベルト部材60が接触し、前記被検査物Wを巻き込む。前記u方向に回転する支持ベルト部材60に表面側W1を密着させられた被検査物Wは、半円周状に形成された半円部材である反転用ローラー50に裏面側W2を当接されながら180度転回される。この結果、前記被検査物Wの表裏は反転する。裏面側W2が上側となった反転被検査物Wtは、前記反転用ローラー50から離脱し、受け取りコンベア43へ前記支持ベルト部材60から送り出される。図5において符号61は支持ベルト部材60のローラーである。
【0022】
図6には別の反転部R2の例が示される。この例では、半円部材として反転用ホイール70が用いられている。送り渡しコンベア42の前端部42pに達した被検査物Wは、v方向に回転する反転用ホイール70に受け渡される。被検査物Wの裏面側W2は前記反転用ホイール70に当接され、表面側W1は支持ベルト用ローラー82に張接された支持ベルト部材80と密着している。前記反転用ホイール70が180度回転するに伴い、前記被検査物Wの表裏は反転する。前記被検査物Wは、裏面側W2を上に向けて前記反転用ホイール70から離脱し、反転被検査物Wtとして前記支持ベルト部材80より受け取りコンベア43に送り出される。
【0023】
次に、第二検査ゾーンTについて説明すると、ここでは、表裏反転された被検査物Wtの反転表面W2側を検査するもので、反転表面側外観異常検査部T1と反転表面側異物検査部T2より構成され、前記第一検査ゾーンSと基本的に同様の構成を有する。
【0024】
すなわち、反転表面側外観異常検査部T1は、前記受け取りコンベア43に表裏反転して送り出された反転被検査物Wtをその下面側及び上面側から照射する高周波光源11,12を有し、前記反転被検査物Wtの反転表面側W2を異なった角度から撮像する複数のカラーカメラ13d,13e,13fが設置される。前記カラーカメラ13d,13,13によって得たカラー画像に基づいて反転表面側W2の形状異常、ウエーブ異常、色彩異常の各外観異常が検査される。
【0025】
また、反転表面側異物検査部T2には、同じく反転被検査物Wtをその下面側及び上面側から照射する赤外線光源14,15、前記反転被検査物Wtの反転表面側W2を異なった角度から撮像する複数のモノクロームカメラ16d,16e,16fが設置される。そしてこのモノクロームカメラ16d,16e,16fによって得たモノクローム画像に基づいて異物が検査される。なお、図1及び図4において、同一構成部材には、同一符号を用いた。
【0026】
第二検査ゾーンTにおいて、外観異常検査部T1のカラーカメラ13は、反転被検査物Wtに対して、進行方向の右側面側カメラ13d、直上カメラ13e、左側面側カメラ13fとして配置され、異物検査部T2のモノクロームカメラ16は、反転被検査物Wtの進行方向に対して、前側カメラ1d,直上カメラ1e,後側1fとして配置される。これは、前述した第一検査ゾーンのカメラ配置とは逆になっており、このように被検査物W(Wt)に対して180度異なったカメラ位置とすることにより、被検査物W(Wt)の全周の検査をより確実に行うことができる。
【0027】
請求項記載の発明として規定し、また図3に図示したように、前記第一検査ゾーンS及び第二検査ゾーンTの手前に被検査物W(Wt)の姿勢及び間隔を調整する調整コンベア41を設けることが好ましく薦められる。調整コンベア41は、図7に図示したように、水平コンベア91の両側に同一の速度で回転する右側面コンベア92、左側面コンベア94を配置したもので、被検査物W(Wt)の左右両側面を把持して、一定間隔でかつ被検査物W(Wt)の平面姿勢(向き)を一定にする。これによって、第一検査ゾーンS及び第二検査ゾーンTにおける被検査物W(Wt)の画像をより効果的にかつ効率よく撮像することができる。
【0028】
【発明の効果】
以上図示し説明したように、この発明によれば、高周波光源を被検査物の上下から照射してカラーカメラにより撮像することにより外観異常を検出し、また、赤外線光源を被検査物の上下から照射してモノクロームカメラにより撮像することにより異物を検出することによって、被検査物であるウエーブがかけられた麺の塊状体からなる即席ラーメンの各種外観検査を単一のラインで効果的にかつ効率よく行うことができる。
【0029】
また、特に、この発明の外観検査装置によれば、単一の検査ライン中において被検査物に対する衝撃がなくかつ物品間の間隔及び姿勢ができるだけ一定に保持されるように反転させることができるので、その後の検査を効率よく行うことができ、作業性が向上する。
【図面の簡単な説明】
【図1】 この発明の一実施例を示す検査ゾーンの概略を表す側面図である。
【図2】 被検査物の外観不良例を表す模式図である。
【図3】 外観検査装置の全体を表す概略平面図である。
【図4】 図3の第二検査ゾーンの側面図である。
【図5】 図3の反転部の側面図である。
【図6】 反転部の他の例を示す側面図である。
【図7】 図3の調整コンベアの平面図である。
【符号の説明】
11,12 高周波光源
13 カラーカメラ
14,15 赤外線光源
16 モノクロームカメラ
41 調整コンベア
50 半円部材
60 支持ベルト部材
S 第一検査ゾーン
S1 表面側外観異常検査部
S2 表面側異物検査部
R 反転部
T 第二検査ゾーン
T1 反転表面側外観異常検査部
T2 反転表面側異物検査部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an appearance inspection device for instant ramen.
[0002]
[Prior art]
Instant noodles are made of a lump of noodles with waving, and are generally square flat cubes. This type of instant noodles is continuously and automatically produced, and its appearance is inspected before being made into a product. Appearance inspection is performed for foreign matters such as frying residue by fryer and abnormal appearance such as shape, wave or color, but it is necessary to inspect the appearance of instant ramen made of noodle masses with this kind of wave. It was extremely difficult to do it automatically.
[0003]
Conventional visual inspections of this type are generally visual inspections, but image inspections using camera photography have been attempted due to oversight of defective products caused by inspectors' fatigue and rising labor costs. However, in the conventional image inspection by a camera, a shadow is generated by the wave of the surface in the inspected object having countless complex irregularities such as the wave seen on the surface of the instant ramen. There is a problem that it is very difficult to distinguish from foreign materials.
[0004]
In addition to the foreign substance inspection as described above, the appearance inspection of instant noodles must also be performed for shape abnormalities, wave abnormalities, color abnormalities, etc., and these abnormal appearance inspections are effective with a single line. Therefore, it is eagerly desired to do it efficiently and efficiently.
[0005]
In particular, this kind of instant ramen, which is an object to be inspected, is a planar cube, so it is essential to inspect both the front and back sides. In order to reverse the front and back of the inspection object in the inspection line, for example, it is conceivable that the conveyor is turned upside down with an inclination, etc. In this type of instant ramen, damage such as chipping and debris occurs due to impact Must be suppressed as much as possible. In addition, if the posture or interval of the inspection object varies due to the reverse turning, the subsequent inspection becomes complicated. Therefore, it is preferable to invert the article to be inspected in a single line so that there is no impact and the distance and posture between the articles are kept as constant as possible.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of such points, and instantly performs various visual inspections of instant ramen made of a lump of noodles on which a wave, which is an object to be inspected, in a single line effectively and efficiently. An object of the present invention is to provide an appearance inspection apparatus for ramen.
[0007]
[Means for Solving the Problems]
That is, the invention of claim 1 is an apparatus for inspecting the appearance abnormality and foreign matter of instant noodles made of a lump of noodles with a wave as an object to be inspected with a single conveyor line, and sent out at regular intervals. A high-frequency light source that irradiates the inspected object from its lower surface side and upper surface side, and a shape abnormality based on color images obtained by a plurality of color cameras that image the surface side of the object to be inspected from different angles, It has a surface-side appearance abnormality inspection section that inspects each appearance abnormality such as a wave abnormality and a color abnormality, and also has an infrared light source that irradiates the inspection object from its lower surface side and upper surface side, and the surface side of the inspection object is different. A first inspection zone having a surface-side foreign matter inspection section for inspecting foreign matter based on monochrome images obtained by a plurality of monochrome cameras picked up from different angles, and the first inspection zone A semi-circular member that is installed in contact with a delivery conveyor in front of the traveling direction and is in contact with the back side of the inspection object, and a support belt that is stretched along the semi-circular member so as to be in contact with the surface side of the inspection object And a reversing unit that reverses the inspection object and sends it to the receiving conveyor, and a high-frequency light source that irradiates the reversing inspection object that is reversed and sent to the receiving conveyor from the lower surface side and the upper surface side. A reversing surface side for inspecting appearance abnormalities such as shape abnormality, wave abnormality, and color abnormality based on color images obtained by a plurality of color cameras that image the reversing surface side of the reversal inspection object from different angles A plurality of external anomaly inspection units and an infrared light source that irradiates the inverted object to be inspected from the lower surface side and the upper surface side, and images the inverted surface side of the inverted object to be inspected from different angles. Roh according to the appearance inspection apparatus of instant noodles, characterized in that it consists of a second inspection zone with an inverted surface foreign matter inspection unit for inspecting foreign matter on the basis of the monochrome image obtained by the chrome camera.
[0008]
A second aspect of the present invention, in claim 1, according to the appearance inspection apparatus of the instant noodles adjustment conveyor for adjusting the orientation and spacing of the object in front of the first inspection zone and the second inspection zone is provided .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a side view showing an outline of an inspection zone showing an embodiment of the present invention, FIG. 2 is a schematic view showing an example of an appearance defect of an object to be inspected, and FIG. 3 is a schematic plan view showing an entire appearance inspection apparatus. 4 is a side view of the second inspection zone of FIG. 3, FIG. 5 is a side view of the reversing part of FIG. 3, FIG. 6 is a side view of another example of the reversing part, and FIG. 7 is a plan view of the adjusting conveyor of FIG. It is.
[0010]
In the embodiment shown in the figure, the object to be inspected W is an instant noodle made of a lump of noodles subjected to a wave. First, as shown in FIG. 1, appearance abnormalities such as a shape abnormality, a wave abnormality, and a color abnormality are based on a color image captured by irradiating the inspection object W from the lower surface side and the upper surface side with the high frequency light sources 11 and 12. From the appearance abnormality inspection step S1 for inspecting the object, and from the foreign substance inspection step S2 for inspecting the foreign object based on the monochrome image obtained by irradiating the inspection object W from the lower surface side and the upper surface side with the infrared light sources 14 and 15 similarly. It is characterized by becoming. In the figure, reference numeral 13 (13a, 13b, 13c) is a color camera, 16 (16a, 16b, 16c) is a monochrome camera, 17 is a translucent translucent conveyor, 18 is a defective product discharging means, 19 is a roller, H Is a cover.
[0011]
2 is a schematic diagram of a camera image showing an appearance defect example of the inspection object W. In the appearance abnormality inspection step S1, the color camera 13 (13a, 13b, 13c) captures a color image, It is converted into RGB colors of “red, green, and blue” by a known method, and optical inspection such as smoothing and binarization is performed according to a known image processing method. As shown in FIGS. 2A to 2D, the appearance abnormality to be inspected here is the chipped portion 21a in which a part of the inspection object W is missing and the noodles overhanging part of the inspection object W. There is a shape abnormality 21 such as a burr 21b, a wave abnormality 22 in which a gap is generated between the noodle and the noodle due to a defective noodle wave, and a color abnormality 23 in which color unevenness is observed in the noodle.
[0012]
In the foreign substance inspection step S2, a monochrome image is captured by the monochrome camera 16 (16a, 16b, 16c), and optical inspection such as binarization is performed according to a known image processing method. The purpose of irradiating the inspection object W from above and below using the infrared light sources 14 and 15 is that the infrared light is transmitted through the normal region of the inspection object W and the shadow caused by the unevenness of the wave of the inspection object W disappears. is there. Further, by using a monochrome image, a shadow caused by a wave on the surface and a black foreign object (such as fried food) are clearly identified. As shown in FIG. 2E, in a monochrome image captured by irradiating with the infrared light sources 14 and 15 from the lower surface side and the upper surface side of the object W, strong transmitted light and reflected light due to infrared light are present. On the other hand, the infrared light cannot pass through a black foreign object such as fried food and can be distinguished from the foreign object 31 while being irradiated on the inspection object W.
When an appearance abnormality or foreign matter is detected in the inspection object W, it is removed from the conveyor 17 as a defective product by a defective product discharging means 18 such as an ejector.
[0013]
In the appearance inspection method described above, since the object to be inspected has front and back surfaces formed of a lump of noodles subjected to wave, the appearance abnormality inspection step S1 and the foreign matter inspection step S2 are performed as described above. It is preferable to carry out also on both the surface side W1 of the lump body of the inspected object W and the reverse surface side W2 obtained by reversing it.
Hereinafter, it will be described in further detail together with the device invention defined as claims 1 and 2 .
[0014]
FIG. 3 is an overall schematic plan view showing an embodiment of the appearance inspection apparatus 40 according to the invention of claim 1 , and the front side and the back side of the instant ramen made of a lump of noodles as the inspection object W described above. Each side is inspected for abnormal appearance and foreign matter on a single conveyor line. The appearance inspection apparatus 40 includes a first inspection zone S that inspects the front side of the inspection object W, a reversing portion R, and a second inspection zone T that inspects the back side of the inspection object W. In FIG. 3, reference numeral 41 is an adjustment conveyor, 42 is a delivery conveyor, 43 is a receiving conveyor, and D is a metal detector.
[0015]
Here, in the first inspection zone S and the second inspection zone T, the appearance abnormality inspection step and the foreign matter inspection step by the above-described appearance inspection method are adopted. The first inspection zone S in FIG. 3 has the same configuration as that in FIG. 1, and the second inspection zone T is different from FIG. 1 only in the arrangement position of the camera.
[0016]
First, the first inspection zone S for inspecting the surface side of the inspection object W will be described. As already illustrated and described in FIG. 1, the inspection object sent out at regular intervals is supplied to the surface-side appearance abnormality inspection unit S1. High-frequency light sources 11 and 12 that irradiate W from the lower surface side and the upper surface side, and a plurality of color cameras 13a, 13b, and 13c that image the surface side W1 of the inspection object W from different angles are installed. As described above, appearance abnormalities 21 such as the shape abnormality 21, the wave abnormality 22, and the color abnormality 23 are inspected based on the color images obtained by the color cameras 13a, 13b, and 13c.
[0017]
Similarly, the surface-side foreign matter inspection unit S2 has a plurality of infrared light sources 14 and 15 that irradiate the inspection object W from the lower surface side and the upper surface side thereof, and a plurality of images that image the surface side W1 of the inspection object W from different angles. Monochrome cameras 16a, 16b, and 16c are installed. As described above, the presence or absence of the foreign matter 31 is inspected based on the monochrome images obtained by the monochrome cameras 16a, 16b, and 16c.
[0018]
In the first inspection zone S, the high-frequency light sources 11 and 12 are made of known fluorescent lamps, the lower light source 11 is a bar-shaped fluorescent lamp juxtaposed in a substantially square shape, and the upper high-frequency light source 12 is an annular fluorescent lamp. Is used. The infrared light sources 14 and 15 are light-emitting diodes that emit known infrared light. Similarly to the above, the lower light source 14 has a light-emitting diode laid in a substantially square shape, and the upper light source 15 has a substantially annular light-emitting diode. Lay down. By forming the upper high-frequency light source 12 and the upper infrared light source 15 in an annular shape, the color camera 13b and the monochrome camera 16b located immediately above the inspection object W can be easily imaged, and the inspection object W can be taken from a position close to the inspection object W. Sufficient irradiation is possible. The same applies to the second inspection zone T described later.
[0019]
Further, in the first inspection zone S, the color camera 13 of the appearance abnormality inspection unit S1 is arranged with respect to the inspection object W as a front camera 13a, an upper camera 13b, and a rear side 13c in the traveling direction. The monochrome camera 16 of the foreign substance inspection unit S2 is arranged as a right side camera 16a, a directly above camera 16b, and a left side camera 16c with respect to the traveling direction of the inspection object W. In the second inspection zone, which will be described later, the camera arrangement is reversed.
[0020]
As shown in FIGS. 3 and 5, the reversing portion R is installed in contact with the delivery conveyor 42 in the forward direction of the first inspection zone S, and is a semicircle that is in contact with the back side W2 of the inspection object W. It has a member 50 and a support belt member 60 stretched along the semicircular member 50 so as to be in contact with the surface side W1 of the object to be inspected. It is a mechanism to send out to
[0021]
That is, the inspected object W that has passed through the first inspection zone S is turned upside down for the second inspection zone T for inspecting the next back side. As shown in FIG. 5, when the inspection object W reaches the front end 42p of the delivery conveyor 42, the support belt member 60 that rotates in the semicircular downward direction u contacts the surface side W1 of the inspection object W, The inspection object W is rolled up. The inspection object W having the surface side W1 in close contact with the support belt member 60 rotating in the u direction is brought into contact with the reverse roller 50, which is a semicircular member formed in a semicircular shape, on the back surface side W2. However, it is turned 180 degrees. As a result, the front and back of the inspection object W are reversed. The reverse inspection object Wt whose back surface side W2 is the upper side is separated from the reversing roller 50 and sent out from the support belt member 60 to the receiving conveyor 43. In FIG. 5, reference numeral 61 denotes a roller of the support belt member 60.
[0022]
FIG. 6 shows another example of the reversing unit R2. In this example, a reversing wheel 70 is used as a semicircular member. The inspection object W that has reached the front end 42p of the delivery conveyor 42 is delivered to the reversing wheel 70 that rotates in the v direction. The back surface side W2 of the inspection object W is in contact with the reversing wheel 70, and the front surface side W1 is in close contact with the support belt member 80 stretched on the support belt roller 82. As the reversing wheel 70 rotates 180 degrees, the front and back of the inspection object W are reversed. The inspection object W is detached from the reversing wheel 70 with the back surface W2 facing upward, and is received from the support belt member 80 as a reversal inspection object Wt and sent to the conveyor 43.
[0023]
Next, the second inspection zone T will be described. Here, the reverse surface W2 side of the inspected object Wt that has been turned upside down is inspected, and the reverse surface side appearance abnormality inspection portion T1 and the reverse surface side foreign matter inspection portion T2 are inspected. The first inspection zone S is basically the same as the first inspection zone S.
[0024]
In other words, the reverse surface side appearance abnormality inspection unit T1 includes high-frequency light sources 11 and 12 that irradiate the reverse inspection object Wt sent to the receiving conveyor 43 by being reversed upside down from the lower surface side and the upper surface side. A plurality of color cameras 13d, 13e, and 13f that image the inversion surface side W2 of the inspection object Wt from different angles are installed. The color camera 13d, 13 e, 13 the shape of the inverted surface W2 abnormality based on the color image obtained by f, wave abnormality, abnormality is inspected each appearance of color anomalies.
[0025]
Further, the reverse surface side foreign matter inspection section T2 similarly irradiates the reverse inspection object Wt from the lower surface side and the upper surface side thereof, the infrared light sources 14, 15 and the reverse surface side W2 of the reverse inspection object Wt from different angles. A plurality of monochrome cameras 16d, 16e, and 16f to be imaged are installed. The foreign matter is inspected based on the monochrome images obtained by the monochrome cameras 16d, 16e, and 16f. 1 and 4, the same reference numerals are used for the same constituent members.
[0026]
In the second inspection zone T, the color camera 13 of the appearance abnormality inspection unit T1 is arranged as a right side camera 13d, a directly above camera 13e, and a left side camera 13f in the advancing direction with respect to the inverted inspection object Wt. The monochrome camera 16 of the inspection unit T2 is arranged as a front camera 1 6 d, a camera 1 6 e directly above, and a rear 1 6 f with respect to the traveling direction of the inverted inspection object Wt. This is opposite to the camera arrangement of the first inspection zone described above. Thus, by setting the camera position 180 degrees different from the inspection object W (Wt), the inspection object W (Wt ) Can be more reliably inspected all around.
[0027]
As defined in the invention of claim 2 , and as shown in FIG. 3, an adjustment conveyor for adjusting the posture and interval of the inspection object W (Wt) before the first inspection zone S and the second inspection zone T. 41 is preferably recommended. As shown in FIG. 7, the adjustment conveyor 41 includes a right side conveyor 92 and a left side conveyor 94 that rotate at the same speed on both sides of the horizontal conveyor 91, and both left and right sides of the inspection object W (Wt). The surface is gripped so that the planar posture (orientation) of the inspection object W (Wt) is constant at regular intervals. Thereby, it is possible to capture an image of the inspection object W (Wt) in the first inspection zone S and the second inspection zone T more effectively and efficiently.
[0028]
【The invention's effect】
As illustrated and described above, according to the present invention, an appearance abnormality is detected by irradiating a high-frequency light source from above and below the object to be imaged by a color camera, and an infrared light source is detected from above and below the object to be inspected. Effective and efficient single-line inspection of various types of instant noodles made of a lump of noodles with a wave of the object being inspected by detecting foreign matter by irradiating and imaging with a monochrome camera Can be done well.
[0029]
Further, in particular, according to the appearance inspection apparatus of the present invention, it can be reversed so that there is no impact on the object to be inspected in a single inspection line and the interval and posture between articles are kept as constant as possible. The subsequent inspection can be performed efficiently, and the workability is improved.
[Brief description of the drawings]
FIG. 1 is a side view schematically showing an inspection zone showing an embodiment of the present invention.
FIG. 2 is a schematic diagram showing an example of an appearance defect of an inspection object.
FIG. 3 is a schematic plan view showing the entire appearance inspection apparatus.
4 is a side view of the second inspection zone of FIG. 3;
FIG. 5 is a side view of the reversing unit of FIG. 3;
FIG. 6 is a side view showing another example of the reversing unit.
7 is a plan view of the adjustment conveyor of FIG. 3. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11,12 High frequency light source 13 Color camera 14,15 Infrared light source 16 Monochrome camera 41 Adjustment conveyor 50 Semicircular member 60 Support belt member S 1st inspection zone S1 Surface side external appearance abnormality inspection part S2 Surface side foreign material inspection part R Inversion part T 1st Two inspection zones T1 Reverse surface side appearance abnormality inspection part T2 Reverse surface side foreign matter inspection part

Claims (2)

被検査物であるウエーブがかけられた麺の塊状体からなる即席ラーメンの外観異常及び異物を単一のコンベアラインで検査する装置であって、
一定間隔で送り出された被検査物をその下面側及び上面側から照射する高周波光源を有し、前記被検査物の表面側を異なった角度から撮像する複数のカラーカメラによって得たカラー画像に基づいて形状異常、ウエーブ異常、色彩異常の各外観異常を検査する表面側外観異常検査部と、同じく前記被検査物をその下面側及び上面側から照射する赤外線光源を有し、前記被検査物の表面側を異なった角度から撮像する複数のモノクロームカメラによって得たモノクローム画像に基づいて異物を検査する表面側異物検査部とを有する第一検査ゾーンと、
前記第一検査ゾーンの進行方向前方の送り渡しコンベアに接して設置され、前記被検査物の裏面側に接する半円部材と該半円部材に沿って前記被検査物の表面側に接するように張設された支持ベルト部材とを有し、前記被検査物を表裏反転して受け取りコンベアへ送り出す反転部と、
前記受け取りコンベアに表裏反転して送り出された反転被検査物をその下面側及び上面側から照射する高周波光源を有し、前記反転被検査物の反転表面側を異なった角度から撮像する複数のカラーカメラによって得たカラー画像に基づいて形状異常、ウエーブ異常、色彩異常の各外観異常を検査する反転表面側外観異常検査部と、同じく前記反転被検査物をその下面側及び上面側から照射する赤外線光源を有し、前記反転被検査物の反転表面側を異なった角度から撮像する複数のモノクロームカメラによって得たモノクローム画像に基づいて異物を検査する反転表面側異物検査部とを有する第二検査ゾーン
とからなることを特徴とする即席ラーメンの外観検査装置。
A device for inspecting the appearance abnormality and foreign matter of instant noodles made of a lump of noodles with a wave as an object to be inspected with a single conveyor line,
Based on color images obtained by a plurality of color cameras having a high-frequency light source that irradiates the inspection object sent out at a constant interval from its lower surface side and upper surface side, and images the surface side of the inspection object from different angles A surface-side appearance abnormality inspection unit that inspects each appearance abnormality such as shape abnormality, wave abnormality, and color abnormality, and an infrared light source that similarly irradiates the inspection object from its lower surface side and upper surface side, A first inspection zone having a surface-side foreign matter inspection unit for inspecting foreign matter based on monochrome images obtained by a plurality of monochrome cameras that capture the surface side from different angles;
A semicircular member that is installed in contact with a delivery conveyor ahead of the first inspection zone in the traveling direction, and that contacts a back surface side of the inspection object, and a surface side of the inspection object along the semicircular member A reversing unit having a support belt member stretched, and reversing the inspection object upside down and sending it to the receiving conveyor,
A plurality of colors having a high-frequency light source that irradiates the reverse inspection object sent to the receiving conveyor by reversing the front and back from the lower surface side and the upper surface side, and images the reverse surface side of the reverse inspection object from different angles Inversion surface side appearance abnormality inspection unit for inspecting appearance abnormality such as shape abnormality, wave abnormality, and color abnormality based on a color image obtained by a camera, and infrared light that similarly irradiates the reverse inspection object from its lower surface side and upper surface side A second inspection zone having a light source and a reversal surface side foreign matter inspection section for inspecting foreign matter based on monochrome images obtained by a plurality of monochrome cameras that capture images of the reversal surface side of the reversal inspection object from different angles An appearance inspection device for instant noodles, characterized by comprising:
請求項において、前記第一検査ゾーン及び第二検査ゾーンの手前に被検査物の姿勢及び間隔を調整する調整コンベアが設けられている即席ラーメンの外観検査装置。2. The instant noodle appearance inspection apparatus according to claim 1 , wherein an adjustment conveyor for adjusting the posture and interval of the inspection object is provided in front of the first inspection zone and the second inspection zone.
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JP6548161B2 (en) * 2015-08-27 2019-07-24 シマダヤ株式会社 Automatic elimination method of frozen noodle mixed with frozen falling off plastic pieces
JP6748168B2 (en) * 2018-09-21 2020-08-26 株式会社ミヤザワ Article inspecting apparatus having substantially circular side surfaces, and article reversing apparatus
JP7348622B2 (en) * 2019-05-24 2023-09-21 株式会社寺岡精工 Inspection equipment and inspection system
CN113189112A (en) * 2021-04-29 2021-07-30 重庆金凌印刷有限公司 Package label printing defect detection equipment
KR102536644B1 (en) 2022-05-31 2023-05-26 유민규 Appearance inspection apparatus for noodles

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