EP1604192A1 - Inspection complete de la paroi interieure de recipients transparents - Google Patents

Inspection complete de la paroi interieure de recipients transparents

Info

Publication number
EP1604192A1
EP1604192A1 EP03722259A EP03722259A EP1604192A1 EP 1604192 A1 EP1604192 A1 EP 1604192A1 EP 03722259 A EP03722259 A EP 03722259A EP 03722259 A EP03722259 A EP 03722259A EP 1604192 A1 EP1604192 A1 EP 1604192A1
Authority
EP
European Patent Office
Prior art keywords
container
camera
containers
wall
lighting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03722259A
Other languages
German (de)
English (en)
Inventor
Edgar Wagener
Franz Häring
Kurt Spiegelmacher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Syscona Kontrollsysteme GmbH
Original Assignee
Syscona Kontrollsysteme GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Syscona Kontrollsysteme GmbH filed Critical Syscona Kontrollsysteme GmbH
Publication of EP1604192A1 publication Critical patent/EP1604192A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G01N21/9018—Dirt detection in containers

Definitions

  • the present invention relates to a method and device for the automatic and largely complete detection of contaminants or foreign bodies in the inner side wall area of empty transparent containers, such as e.g. Bottles with narrow sharks, which are guided linearly past inspection devices by means of a laterally acting transport device or by a rotating receiving star with recesses for the containers.
  • empty transparent containers such as e.g. Bottles with narrow sharks
  • the solutions with lateral detection of the transparent containers have the disadvantage that the interior cannot be detected directly, but only through the container wall. Impurities and the like. depicted on all outer and inner container wall surfaces penetrated by transmitted light. Together with faults caused by the packaging material itself, this leads to incorrect recognition and localization.
  • Another disadvantage is that the containers, for example in linear inspectors, have to be rotated by a certain angle of rotation so that the side wall can be inspected all around. This requires corresponding complex mechanisms with all the associated disadvantages. If the transparent container has external structures or imperfections, or if it is printed with hot stamping or the like, all the contaminants behind it cannot be seen.
  • the object of the present invention is to eliminate the disadvantages mentioned and - for the purpose of the best possible interior hygiene, in particular of reusable containers - to implement a more complete interior inspection with increased detection reliability. This object is achieved by the method and the device according to claim 1. Preferred developments and solution details are described in claims 2 to 8.
  • Fig. 1 shows the basic arrangement of the essential components of the device according to the invention, including exemplary beam paths (17; 18).
  • a container for example a glass bottle (1)
  • a camera (12) above the container mouth (3) which detects the inner wall regions (5) that are visible in this way by means of a radiation collector (13) , and - in a separate station from this - by another camera (11) under the container base (2), which captures the inner wall areas visible from this side, eg the shoulder area (4), using a lens unit (14).
  • the images are processed and analyzed in a detection-supporting manner by means of an electronic image processing system.
  • a permanently or pulsed lighting unit (7, 8) illuminating the inner wall in the transmitted light principle. If the containers are picked up, these lighting units (7, 8) can be concentrically broken through in a single station so that the cameras can be aligned with the central beam axis.
  • the light is preferably emitted diffusely, for example by using an upstream diffuser (9, 10) or the like, and is preferably located at a distance of 10 to 100 mm above the mouth (3) or. under the bottom (2) of the container (1).
  • These diffusing screens can either simultaneously fulfill a protective function for the lighting units (7, 8) or can also be protected by an additional, upstream, transparent protective element.
  • the largely vertical containers (1) are moved horizontally at the level of the mouth or bottom-side receiving station by a known transport device which engages the side wall of the container, for example transport belts (6) pressed on both sides. This allows a clear view of the container (1) for a short time. A rotational movement of the packs superimposed on the advance movement is advantageously not required.
  • the containers (1) can pass the inspection stations described in very close succession.
  • the lighting units (7, 8) respectively.
  • the above-mentioned device components are designed to be adjustable in height either manually or by a motor.
  • the camera (11) below, including the lens (14), is provided with a shoulder-free and easily insertable transparent protective screen (15), which is flush with the housing for the camera (11), lens unit (14) and possibly the adjacent lighting unit (7), protected from dirt, broken glass or moisture, according to a proposal according to the invention in particular this bottom-side protective pane (15) by pulsed or permanently blowing compressed air or an intermittent or permanent mechanical wiper device is freed from water drops, dirt particles or the like.
  • the lighting of the container can take place in a space-saving manner by means of the mouth and bottom lighting unit simultaneously and in a common station.
  • the cameras, including the optical elements, are surrounded concentrically by ring-shaped lighting units and are flush with one another.
  • the container is either picked up simultaneously from both sides or one after the other at the smallest possible time interval.
  • the bottom-side lens unit (14) is arranged at such a distance from the bottom (2) of the container (1) and is designed and adjusted so that the focus of the image recorded by the camera (11) lies in the inner wall area above the bottom (2) and that the see-through floor (2) lies in the complete unsharpness area.
  • optical interference from container floors e.g. Curvatures, material structures and the like, in connection with a suitably adjusted light source, i.e. Illumination unit (8) and lens (10) on the opposite side of the container (1) can already be largely optically eliminated.
  • Containers that contain residual liquids to a certain extent, e.g. from the washing process, or contain other residues, are inspected by an appropriate and known device, e.g. an infrared resp. High-frequency inspection station, recognized and discharged from the transport line either before or after the interior wall inspection according to the invention. This measure is necessary in order to avoid incorrect inspection results due to larger layers of liquid in the container that impair the beam path.
  • an appropriate and known device e.g. an infrared resp. High-frequency inspection station
  • Digital CCD cameras are preferably used.
  • Object shapes, image structures, differences in brightness or color are analyzed according to the invention by a downstream electronic image processing system with appropriate software.
  • characteristic image elements are isolated and assessed, for example, by comparing parameters or image patterns in terms of the detection objective of the method according to the invention. In this way it is also possible to correctly interpret such picture elements that look similar to contamination or a foreign body.
  • misinterpreted structural elements or areas of the container to be inspected for example structures in transparent material or prints on the outside, are assessed correctly by software-based blanking, separate evaluation of optically delimitable areas or filters, ie not as soiling or the like.
  • Misinterpretations are also due to possible, non-eliminable defects in the recorded blank image without containers, e.g. through drops, shards, other foreign bodies or larger scratches on diffusing screens (9, 10) in front of the lighting units (7, 8).
  • defects are detected, limited and specifically excluded from the container assessment by means of image data processing.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

L'invention concerne un procédé et un dispositif de détection automatique et largement complète d'impuretés ou de corps étrangers dans la zone de paroi latérale intérieure de récipients vides transparents, tels que des bouteilles à goulot étroit, lesquels récipients sont passés devant des dispositifs d'inspection de façon linéaire par un dispositif de transport à saisie latérale ou de façon circulaire par une étoile de réception rotative pourvue d'évidements pour les récipients. A cet effet, le récipient est photographié aussi bien par une caméra située au-dessus de l'orifice du récipient que par une caméra située en dessous du fond du récipient puis les images sont chacune préparées et analysées au moyen d'un système de traitement d'images électronique, un système d'éclairage approprié respectif, éclairant la paroi intérieure, étant installé sur le côté du récipient opposé à la caméra. Les unités de prise de vue individuelles, composées d'une caméra et d'un système d'éclairage opposé, peuvent être insérées dans des stations séparées ou dans une station commune pourvue de caméras et de systèmes d'éclairage opposés coaxialement.
EP03722259A 2003-03-10 2003-04-04 Inspection complete de la paroi interieure de recipients transparents Withdrawn EP1604192A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2003110273 DE10310273A1 (de) 2003-03-10 2003-03-10 Vollinspektion der Innenwand transparenter Gebinde
DE10310273 2003-03-10
PCT/DE2003/001114 WO2004081550A1 (fr) 2003-03-10 2003-04-04 Inspection complete de la paroi interieure de recipients transparents

Publications (1)

Publication Number Publication Date
EP1604192A1 true EP1604192A1 (fr) 2005-12-14

Family

ID=32891971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03722259A Withdrawn EP1604192A1 (fr) 2003-03-10 2003-04-04 Inspection complete de la paroi interieure de recipients transparents

Country Status (4)

Country Link
EP (1) EP1604192A1 (fr)
AU (1) AU2003229511A1 (fr)
DE (2) DE10310273A1 (fr)
WO (1) WO2004081550A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010050673A1 (de) * 2010-11-09 2012-05-10 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Inspizieren von Behältnissen
DE102010043653A1 (de) * 2010-11-09 2012-05-10 Krones Aktiengesellschaft Verfahren und Vorrichtung zum Erkennen einer Restflüssigkeit in Behältern
DE102011083037A1 (de) 2011-09-20 2013-03-21 Krones Aktiengesellschaft Verfahren und Vorrichtung zur Inspektion von Behältern und Vorformlingen
DE102012102221A1 (de) * 2012-03-16 2013-09-19 Krones Ag Vorrichtung zur verwendung bei einer inspektion eines behälters, inspektionssystem und inspektionsverfahren
DE102012016342A1 (de) 2012-08-20 2014-05-15 Khs Gmbh Behälterinneninspektion von unten durch den Boden hindurch
CN104359916B (zh) * 2014-11-17 2017-04-12 屈桢深 基于反射光路设计的瓶装液体异物检测方法和检测装置
DE102015213352B4 (de) * 2015-07-16 2018-10-31 Krones Ag Inspektionsvorrichtung für einen Vorformling
CN107607558B (zh) * 2017-08-28 2020-01-10 楚天科技股份有限公司 一种异物检测转盘系统及其x射线异物检测机
DE102017123684A1 (de) * 2017-10-11 2019-04-11 Krones Ag Vorrichtung zum Inspizieren von Behältnissen und insbesondere von Dosen
DE102020118470A1 (de) * 2020-07-13 2022-01-13 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Inspizieren von Behältnissen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55144533A (en) * 1979-04-27 1980-11-11 Mitsubishi Heavy Ind Ltd Apparatus for inspecting bottle
JPH0711494B2 (ja) * 1988-06-16 1995-02-08 松下電工株式会社 透光性容器の検査方法
JP2655210B2 (ja) * 1991-04-05 1997-09-17 株式会社日立製作所 ガラス筒体の欠陥検査方法
JPH05126761A (ja) * 1991-11-06 1993-05-21 Mitsubishi Heavy Ind Ltd 空びん分別装置
DE29706425U1 (de) * 1997-04-10 1998-08-06 Heuft Systemtechnik Gmbh, 56659 Burgbrohl Vorrichtung zum Erkennen von diffus streuenden Verunreinigungen in transparenten Behältern
JP3340413B2 (ja) * 2000-01-20 2002-11-05 株式会社スキャンテクノロジー ペットボトル内沈殿異物検査方法及びその装置
DE10065290C2 (de) * 2000-12-29 2003-05-15 Krones Ag Verfahren und Vorrichtung zur optischen Inspektion von Flaschen
DE10164058B4 (de) * 2000-12-30 2008-06-12 Krones Ag Inspektionsvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004081550A1 *

Also Published As

Publication number Publication date
DE10394241D2 (de) 2006-01-26
DE10310273A1 (de) 2004-09-23
AU2003229511A1 (en) 2004-09-30
WO2004081550A1 (fr) 2004-09-23

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