EP0094396A1 - Installation electro-optique de controle du contenu de recipients - Google Patents

Installation electro-optique de controle du contenu de recipients

Info

Publication number
EP0094396A1
EP0094396A1 EP82903312A EP82903312A EP0094396A1 EP 0094396 A1 EP0094396 A1 EP 0094396A1 EP 82903312 A EP82903312 A EP 82903312A EP 82903312 A EP82903312 A EP 82903312A EP 0094396 A1 EP0094396 A1 EP 0094396A1
Authority
EP
European Patent Office
Prior art keywords
laser
row
optical element
phototransistors
laser beam
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Withdrawn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
EP82903312A
Other languages
German (de)
English (en)
Inventor
Hans P. Friedrich
Harro HÖFLIGER
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.)
HANS P FRIEDRICH GmbH
Original Assignee
HANS P FRIEDRICH 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 HANS P FRIEDRICH GmbH filed Critical HANS P FRIEDRICH GmbH
Publication of EP0094396A1 publication Critical patent/EP0094396A1/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Withdrawn legal-status Critical Current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
    • G01N21/9027—Dirt detection in containers in containers after filling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0078—Testing material properties on manufactured objects
    • G01N33/0081—Containers; Packages; Bottles

Definitions

  • Electro-optical bottle content control device is Electro-optical bottle content control device.
  • the invention relates to an electro-optical device for detecting moving shadow-casting impurities in liquid bottle contents, with a light source, at least one optical element and at least one tight row of photoelectric components which are arranged in the light of the light source influenced by the optical element are not.
  • a known device (egg) of this type can be used to determine whether ampoules contain small foreign bodies which are whirled up when the ampoules are rotated briefly and quickly.
  • the known device between the light source and two mutually offset parallel rows of phototransistors on further optical elements has a condenser and a projection lens, between which the ampoule to be tested is arranged in the beam path, and a row of curved light guides , each of which ends at a different phototransistor and, together with the other phototransistors, constitutes an essentially uninterrupted, elongated end face on which the temporary image of the one moved is somewhere Contamination falls in the shadow thrown in the liquid bottle contents.
  • the invention is therefore based on the object of creating a device of the type mentioned at the outset without this disadvantage, which makes it possible, in principle, to check bottles of any size, ie " in particular high", for contamination of their liquid contents.
  • a laser is provided as the light source and in that a dispansive element with a convex element arranged in the beam path behind the laser is provided on optical elements. Cylinder surface that is hit by the laser beam perpendicular to its generator and free of retroreflection, and one in the beam path in front of the. There are scattering elements arranged in the row of components, which diffusely images the flat ray bundle generated by the dispensing element by fanning out the laser beam and illuminating the bottle contents onto the row of components.
  • the width of the flat beam bundle corresponds exactly to the diameter of the laser beam, which can be, for example, 0.8 mm.
  • a reflective circular-cylindrical sector is provided as the dispansive element, which can be produced and adjusted relatively easily.
  • the sector is preferably formed by a high-gloss polished steel cylinder which can be obtained as a finished part.
  • the matt or cloudy glass pane advantageously replaces the light guide bundle of the known device and thereby considerably simplifies it.
  • Another advantage of the frosted or cloudy glass pane is that it can be designed as a filter that dampens the effects of extraneous light on the phototransistors.
  • FIG. 1 a horizontal side view of the embodiment
  • Fig. 2 is a top view of the embodiment.
  • a laser 10 is arranged in such a way that it can emit a laser beam 12 vertically downwards, which strikes a reflecting circular-cylindrical sector provided as a dispensing element, which is formed by a steel cylinder 14 polished to a high gloss, the horizontal longitudinal axis of which Axis of the laser beam 12 crosses perpendicularly.
  • the steel cylinder 14 fans out the laser beam 12 into a flat beam 16 of the same width, which lies in a vertical plane and whose height increases linearly with increasing distance from the steel cylinder 14.
  • the row 20 of phototransistors 22 extends over the entire height of the flat beam 16 at the location of the carrier 18 and is acted upon by this flat beam 16.
  • a cloudy glass pane 28 attached to the carrier 18 in the form of a plane-parallel plate as a scattering element.
  • the bottle to be tested is placed in the space between the laser 10 and the steel cylinder 14, on the one hand, and the phototransistors 22 and the cloudy glass pane 28, on the other hand, closely in front of this pane, namely on a turntable , which can be put into rapid rotation and suddenly stopped, so that the bottle contents continue to rotate and move impurities, which produce 16 shadows in the flat beam call, which are determined by the photo transistors 22 as a temporary deviation from normal lighting.
  • the evaluation circuit can be limited to a display or can intervene in the treatment of the bottles.

Landscapes

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

Abstract

L'installation qui permet de contrôler notamment les grandes bouteilles comporte comme dans les installations conventionnelles une rangée (20) de phototransistors (22), mais elle utilise comme source lumineuse un laser (10), dont le rayon (12) est étalé au moyen d'une surface convexe cylindrique (14) formant un faisceau lumineux plat (16); devant la rangée de phototransistors (20) est disposée une lentille qui projette l'ombre de toute impureté du contenu sur au moins l'un des phototransistors (22).
EP82903312A 1981-11-19 1982-11-18 Installation electro-optique de controle du contenu de recipients Withdrawn EP0094396A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3145686 1981-11-19
DE3145686A DE3145686C2 (de) 1981-11-19 1981-11-19 Vorrichtung zum Untersuchen von Gefäßinhalten

Publications (1)

Publication Number Publication Date
EP0094396A1 true EP0094396A1 (fr) 1983-11-23

Family

ID=6146627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82903312A Withdrawn EP0094396A1 (fr) 1981-11-19 1982-11-18 Installation electro-optique de controle du contenu de recipients

Country Status (3)

Country Link
EP (1) EP0094396A1 (fr)
DE (1) DE3145686C2 (fr)
WO (1) WO1983001835A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA875450B (en) * 1986-07-28 1988-04-27 Saint Gobain Cinematique Inspection of transparent bodies
EP0277629B1 (fr) * 1987-02-04 1993-05-05 Harro Höfliger Verpackungsmaschinen GmbH Procédé et dispositif pour la détection d'impuretés dans des fluides
DE19741824C2 (de) * 1997-09-23 2002-05-29 Schott Glas Verfahren zur Überwachung des Aufbringens einer Innensilikonisierung bei einem transparenten Behältnis und zugehörige Vorrichtung
EP1126273A1 (fr) * 2000-02-09 2001-08-22 Orbis Oy Procédé et appareil pour la détection de défauts dans un objet transparent
DE102010018823B4 (de) * 2010-04-29 2021-09-23 Krones Aktiengesellschaft Schwebstofferkennung in mit Flüssigkeit befüllten Behältnissen
CA2837037A1 (fr) 2011-06-01 2012-12-06 Swisslog Italia S.P.A. Dispositif et procede d'inspection d'un emballage monodose pour recipient transparent contenant un liquide transparent
ITBO20110365A1 (it) * 2011-06-23 2012-12-24 Swisslog Italia Spa Dispositivo e metodo di ispezione di un involucro monodose per un contenitore sostanzialmente trasparente per un liquido sostanzialmente trasparente
DE102013201798A1 (de) * 2013-02-05 2014-08-07 Krones Ag Fremdkörperinspektion in gefüllten Behältern

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984154A (en) * 1973-12-21 1976-10-05 Chin See L Optical fan levelling system
FR2276581A1 (fr) * 1974-06-27 1976-01-23 Kolikovitcher Irene Appareil pour le controle d'ampoules pharmaceutiques
US4011044A (en) * 1976-07-06 1977-03-08 General Electric Company Use of laser speckle patterns for measurement of electrophoretic mobilities
FR2379869A1 (fr) * 1977-02-04 1978-09-01 Flavenot Bernard Systeme de surveillance d'au moins une vitre contre d'eventuelles tentatives de destruction
US4274745A (en) * 1977-05-12 1981-06-23 Eisai Co., Ltd. Method and apparatus for detecting foreign matters in liquids
US4171481A (en) * 1978-03-20 1979-10-16 Hitachi, Ltd. Apparatus for inspecting bottles having elliptic light converging means
JPS55119049A (en) * 1979-03-08 1980-09-12 Eisai Co Ltd Method and apparatus for detecting extraneous matter in liquid
DE2944959A1 (de) * 1979-11-07 1981-05-21 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Vorrichtung zur fuellmengenmessung eines leichtverdampfbaren metalls fuer eine metalldampfentladungslampe
DE3028720A1 (de) * 1980-07-29 1982-02-25 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen Geraet zur messung der absorption und/oder streuung von licht
FR2497952A1 (fr) * 1981-01-14 1982-07-16 France Etat Appareil et procede d'ombroscopie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8301835A1 *

Also Published As

Publication number Publication date
DE3145686A1 (de) 1983-05-26
WO1983001835A1 (fr) 1983-05-26
DE3145686C2 (de) 1985-07-25

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840131

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FRIEDRICH, HANS P.

Inventor name: HOEFLIGER, HARRO