EP1782047A1 - Controle optique de produits de l'industrie du tabac - Google Patents

Controle optique de produits de l'industrie du tabac

Info

Publication number
EP1782047A1
EP1782047A1 EP05766077A EP05766077A EP1782047A1 EP 1782047 A1 EP1782047 A1 EP 1782047A1 EP 05766077 A EP05766077 A EP 05766077A EP 05766077 A EP05766077 A EP 05766077A EP 1782047 A1 EP1782047 A1 EP 1782047A1
Authority
EP
European Patent Office
Prior art keywords
products
tobacco
drum
processing industry
filter
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Withdrawn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
EP05766077A
Other languages
German (de)
English (en)
Inventor
Wolfgang Siems
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.)
Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau 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 Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP1782047A1 publication Critical patent/EP1782047A1/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Withdrawn legal-status Critical Current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
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/952—Inspecting the exterior surface of cylindrical bodies or wires
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
    • A24C5/34—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes
    • A24C5/3412—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes by means of light, radiation or electrostatic fields

Definitions

  • the invention relates to the optical control of products of the Ta bak processing industry and a device for optical control of such products comprising a Schmectedsvor- direction.
  • products of the tobacco-processing industry include in particular rod-shaped and strip-shaped products or objects such as cigarettes, filter rods, multisegment filter rods, cigarette or tipping paper and stamp imprints
  • Paper webs or glue on paper webs understood.
  • quality features are usually detected on the products of the tobacco processing industry, such as holes, lengths, object identification, stamps, glue application, spot dimensions, the presence of filter elements, damage, etc.
  • line or matrix cameras are usually used, which are equipped with elaborate, large lenses because of the requirement for imaging and resolution quality. For example, to consider the entire cigarette length without distortion and deterioration of sharpness, a considerable distance of the measurement object to the camera is necessary.
  • a machine of the tobacco processing industry such as a filter attachment machine, it is necessary that the optical path with mirrors be folded several times.
  • the illumination of the measurement objects or products of the tobacco processing industry is realized with separate light sources, which must have high light intensities because of the large distance to the object. It is also known, among other things, to introduce the light under intensity losses with optical cables to the test object. The probability that flying particles such as tobacco dust interfere with the optical control and it comes to incorrect ratings is large and can be reduced only by aufwendi ⁇ ge measures because of the large Ab ⁇ state of the control devices used.
  • a gradient index lens is a light-transmissive element which causes a lens effect as a result of a continuous change in refractive index.
  • the light beams preferably enter planar surfaces.
  • the light rays are continuously deflected in the gradient index lens and finally focused in one focal point.
  • the refractive index is preferably varied transversely to the optical axis.
  • the gradient index lenses can be made very compact and in particular with a very small diameter.
  • the lens length is variably adjustable and, above all, the focal length and the working distance can be very close to the
  • the image plane can lie directly on the planar surface of the lens by means of a suitable choice of the lens length, so that light sources can be glued directly onto the lens.
  • the focal length to the product it is also possible to design or arrange the focal length to the product to be optically controlled very close to the preferably planar surface of the gradient index lens, so that due to the close proximity of the lens to the product to be controlled only few particles can interfere with the control, since only a few particles have space in the distance between the lens and the product to be measured or controlled.
  • the invention is particularly effective if a plurality of gradient index lenses arranged next to one another, in particular in at least one row, are used.
  • rod-shaped and strip-shaped objects can be controlled for quality and other properties in a simple manner.
  • a Gradientenindexlinse use, and the part of the optical control device can be made physically small, which ensures the lighting of the products.
  • Particularly effective illumination is given when a plurality of gradient index lenses arranged side by side, in particular in a row, are used for illumination.
  • the object is furthermore achieved by a device for the optical control of products of the tobacco-processing industry comprising an image acquisition device, the image acquisition device comprising at least one gradient index lens.
  • a device for the optical control of products of the tobacco-processing industry comprising an image acquisition device, the image acquisition device comprising at least one gradient index lens.
  • the image acquisition device preferably comprises a plurality of gradient index lenses arranged side by side, in particular in a row. As a result, rod-shaped and strip-shaped objects or products can be controlled very effectively.
  • the image acquisition device also comprises a line of photodiodes or a CCD line, a simple and also space-saving recording or recording of the images of the objects or products of the tobacco-processing industry is possible.
  • CCD line is known per se.
  • the abbreviation CCD comes from the well-known term Charged-Coupled Device.
  • special CCDs are used in this invention in which one half of the elements provided in the CCD converts an image focused on the surface pointwise into intensity-dependent charge quantities, while the other half serves to store and read out the information.
  • the CCDs as Image sensors used.
  • the image capture device comprises a Vorrich ⁇ device for comparing the captured images with predetermined images.
  • a proper filter or a proper filter cigarette can be stored and compared with the captured image of the filter to be controlled or the filter cigarette to be controlled.
  • Particularly efficient is a control of
  • the device for comparing the acquired image with predeterminable images is preferably a computer which stores the predefinable image (s) in a storage element and by means of which a comparison of this image with the acquired images is possible Subsequently, a control signal can be generated, which represents a proper product or a product to be claimed.
  • a lighting device with a light source and at least one gradient index lens which guides a light from the light source to the product to be controlled is provided, this can also be realized in a very space-saving manner.
  • the illumination is particularly effective if a plurality of gradient index lenses arranged side by side, in particular in a row, are provided.
  • an arrangement hoeinan ⁇ means, in particular in a row, the arrangement in an array according to the Fig. 3, which will be described below. loading
  • the device according to the invention can be used particularly effectively if the focus of the gradient index lens is arranged at the end or in the immediate vicinity of the end of the gradient index lens. As a result, measuring inaccuracies or incorrect evaluations by flying particles such as tobacco dust can be largely avoided.
  • a machine of the tobacco-processing industry comprises a device according to the invention for the optical control of products of the tobacco-processing industry.
  • the products in particular filter rods or cigarettes, can be guided transversely axially past the plurality of gradient index lenses arranged next to one another.
  • FIG. 1 is a schematic side view of a Filteransetzma ⁇ machine
  • FIG. 3 is a schematic broken view of a gradient index lens element
  • FIG. 4 is a schematic sectional view through a FiI- rod and two Kontrollinrichtun ⁇ invention.
  • the filter attachment machine for example of the MAX type of the applicant, comprises a transfer drum 2 on which double-use-length cigarettes produced by a cigarette-making machine have been transferred.
  • a tobacco rod cutting drum 3 which cuts the tobacco rods into two pieces of tobacco of simple use length.
  • the tobacco sticks are fed to a spreading drum 4, by means of which the tobacco sticks are spread apart in such a way that filter elements find space therebetween. The thus spread tobacco sticks are fed to a feed drum 5.
  • the feed drum or feed drum 5 are also fed with filter elements, specifically these are inserted between the tobacco sticks on the feed drum 5 into the corresponding receptacles of the feed drum 5.
  • filter elements specifically these are inserted between the tobacco sticks on the feed drum 5 into the corresponding receptacles of the feed drum 5.
  • Filterele ⁇ elements taken from a filter element stock.
  • DE 25 05 998 C2 which corresponds to US Pat. No. 4,020,973.
  • multiple filter elements can be used which have the corresponding filter components, which are not shown, in 16 times the useful length.
  • these are first cut twice by means of circular knives 10 in multifilter segments 4 times the length of use.
  • these multifilter segments are staggered, in order to align them initially in the sliding and cutting drum 8 in a cross-axial direction, and To cut a circular blade 10 in multi-segment filter sections twice the useful length. Subsequently, the filter elements on the sliding and cutting drum 8 are aligned again in order to be cut again by a circular knife 10 in multifilter segments of simple use length.
  • Removal drum 15 taken in a known manner from a filter supply (see as above already DE 25 05 998 C2, which corresponds to US 40 20 973).
  • these filter sections are cut twice by circular knives 10 in order to be transferred to a staggering drum 16.
  • These filter segments are then, after being staggered, transferred to a sliding and cutting drum 17, where they are aligned transversely aligned and cut twice, so that filter elements Ein ⁇ times use length arise.
  • the filter elements of simple useful length are staggered in a staggering drum 18 in order to be transferred to a sliding drum 19, in which they are pushed together in a longitudinally axial alignment.
  • a further accelerator drum 13 serves to insert the filter elements in the middle of the respective receptacles.
  • the last-mentioned filter elements of simple useful length are first inserted into the middle of the receptacles of the feed drum 5, in order to subsequently arrange the further filter elements of simple use length around them and then to arrange the respective tobacco sticks completely outside.
  • the thus assembled tobacco rod / filter element / tobacco rod groups or cigarette filter cigarette groups then become a transfer drum 21 fed.
  • the first optical control is performed.
  • the first control device 41 which measures or checks in a reflected-light technique or in reflection, whether the filter components are complete, whether the position of the filter components is correct, whether the length of the individual components is correct and if so whether Brightness deviations of individual filter components are detectable.
  • the configuration of the first control device will be described with reference to the other figures.
  • the corresponding compiled tobacco rod / filter element / tobacco rod sections are then transferred to a feed drum 22 in order to be pushed together in an alignment drum 23.
  • a tipping paper strip 52 drawn off from a tipping paper bobbin 50 or 51 is glued by a gluing device and then cut in a cutting device 53 on a cutting drum 54 by the knives of a knife drum 53 into covering laminae.
  • the separated pad sheets are adhered to the cigarette filter-cigarette groups on the alignment drum 23 and rolled around the cigarette filter groups on a roller drum 24.
  • a rolling hand 27 and an accordingly thereto an ⁇ closing acceleration element 26 in a known manner.
  • the finished double-filter cigarettes are fed via a transfer drum 28 or a drying drum 28 to a cutting drum 29 and are made up into single-filter cigarettes thereon by cutting them centrally through the filter plugs.
  • the single filter cigarettes are then transferred to a transfer drum 31.
  • a further measuring device 42 is provided which determines in a Auf ⁇ lichtvon whether the tipping paper edge is in the correct position and whether the tipping paper imprint is performed correctly. With respect to these measurements to be made, reference is also made to what has been described below.
  • a turning drum 32 turns a series of filter cigarettes and at the same time transfers them into the continuous untyped series of filter cigarettes.
  • a test drum 33 which is described, for example, in DE 35 17 155 C2, which corresponds to US Pat. No. 4,662,214, the filter cigarettes reach an ejection drum 34.
  • the ejection drum 34 On the ejection drum 34 or at least partially in the ejection drum 34
  • There is a third control device 43 which monitors, for example, the side of the cigarette turned away from the second control device 42 for faults, cracks or general quality characteristics.
  • the filter cigarettes pass into a transfer drum 36 and a blow-out drum 37, in which cigarettes can be removed randomly by means of a removal drum 38.
  • the non-removed filter cigarettes reach a Ableger ⁇ drum 39 which deposits the filter cigarettes in a known manner on a Ablegeband to er ⁇ testify a mass flow of filter cigarettes.
  • the generation of a mass flow and a corresponding device in this respect are described, for example, in EP 0 692 201 B1.
  • FIG. 2 shows a schematic representation of a gradient index lens 60.
  • the refractive index is configured differently or variably transversely to the optical axis. This is indicated by different gray shades in FIG. 2.
  • the different refractive indices across the optical axis create a lens effect.
  • light beams 61 will pass through the gradient index lens 60 focused in a Focus 62.
  • the focus 62 is relatively close to the one end of the gradient index lens. This focus can also be adjusted so that it is arranged exactly on an end face of the gradient index lens 60. If, for example, a surface of a cigarette or the surface of a cigarette filter is arranged in the focus 62, there is little space between the gradient index lens 60 and the surface of the cigarette, so that little material can stay between these two elements, which leads to fewer disturbances in the measurement or control of the respective products. In addition, an airflow curtain can serve to prevent corresponding disturbing Mate ⁇ rial.
  • a lens element 63 of FIG. 3 Objects (for example, cigarettes in the filter attachment machine, glue application and a stamp imprint on paper webs and der der same), it is preferred to use a lens element 63 of FIG. 3.
  • a corresponding lens element 63 which consists of an array of gradient index lenses 60, is illustrated diagrammatically and in three dimensions.
  • the term row can also be used instead of the array. In this case, a double row of gradient index lenses 60 is shown.
  • FIG. 4 shows a sectional view of a corresponding measurement arrangement or control arrangement.
  • There are two devices for optical control each comprising a Gradienten ⁇ index lens 60, for receiving an image of a quarter surface of a cigarette filter 64 includes and two Gradientenindexlinsen
  • Rows receive corresponding to the area of the surface of the cigarettes 64 to be controlled.
  • a computer 70 shown in FIG. 1, which compares the captured image to a presettable and / or stored image, the stored image corresponding to the target state of the surface of the image
  • Cigarettes 64 can represent. If the recorded image, which was obtained by the respective CCD line 65, corresponds to the stored image or differs therefrom in a corresponding tolerance range, the cigarette 64 is conveyed on normally in the machine, for example according to FIG , If the optical control determines that the cigarette 64 is faulty, it is ejected, for example, in the removal drum 38. In FIG. 1, an electrical connection of the computer 70 to the control devices 41 to 43 is indicated by dashed lines.
  • the invention provides a compact optical inspection system with high optical resolution.
  • an object surface with a series of gradient index lenses is imaged on a line of photodiodes or a CCD line.
  • the illumination of the object surface is also preferably done with a series of Gradientenindexlinsen.
  • the optical surface inspection system or the compact optical control device on cigarette, filter machines and filter attachment machines is preferred because of its compact design.
  • the imaging does not occur by conventional lens systems but by a juxtaposition of Gradientenindexlinsen on a line of photodiodes or a CCD line.
  • the high optical quality and resolution is advantageous and that the gradient index lens rows can be modularly arranged one on the other. Flying particles that might affect the control result may pass through a small barrier air curtain due to the proximity of the object or product surface to the gradient index lens or gradient index lens array, which is in the range of a few millimeters near the object surface or product surface be held.
  • the illumination can also be integrated compactly by an LED row parallel to the receiver diode array in the optical control device. The light generated by the LED line can be bundled onto the object surface by means of a row or row of gradient index lenses.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

L'invention concerne une installation de contrôle optique de produits (64) de l'industrie du tabac, cette installation comprenant un dispositif de saisie d'images (41 - 43, 60, 63, 65). L'invention est caractérisée en ce que ce dispositif de saisie d'images (41 - 43, 60, 63, 65) comporte au moins une lentille à gradient d'indice (60). La présente invention porte également sur l'utilisation d'une lentille à gradient d'indice (60) pour le contrôle optique de produits (64) de l'industrie du tabac.
EP05766077A 2004-08-23 2005-07-05 Controle optique de produits de l'industrie du tabac Withdrawn EP1782047A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004040912A DE102004040912A1 (de) 2004-08-23 2004-08-23 Optische Kontrolle von Produkten der Tabakverarbeitenden Industrie
PCT/EP2005/007223 WO2006021261A1 (fr) 2004-08-23 2005-07-05 Controle optique de produits de l'industrie du tabac

Publications (1)

Publication Number Publication Date
EP1782047A1 true EP1782047A1 (fr) 2007-05-09

Family

ID=34972427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05766077A Withdrawn EP1782047A1 (fr) 2004-08-23 2005-07-05 Controle optique de produits de l'industrie du tabac

Country Status (6)

Country Link
US (1) US20070137661A1 (fr)
EP (1) EP1782047A1 (fr)
JP (1) JP2008510973A (fr)
CN (1) CN101006335B (fr)
DE (1) DE102004040912A1 (fr)
WO (1) WO2006021261A1 (fr)

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DE102007036616A1 (de) 2007-08-02 2009-02-05 Hauni Maschinenbau Ag Optische Kontrolle von Produkten der Tabak verarbeitenden Industrie
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DE102009014018A1 (de) 2009-03-23 2010-09-30 Hauni Maschinenbau Ag Prüfung von stabförmigen Artikeln der Tabak verarbeitenden Industrie
DE102011082178A1 (de) * 2011-09-06 2013-03-07 Hauni Maschinenbau Ag Optische Inspektion von stabförmigen Artikeln der Tabak verarbeitenden Industrie
DE102012200611A1 (de) * 2012-01-17 2013-07-18 Hauni Maschinenbau Ag Prüfen von stabförmigen Artikeln der Tabak verarbeitenden Industrie
US9019500B2 (en) 2012-12-28 2015-04-28 Altria Client Services Inc. Heat lamp test for identification of oil spots
DE102013209621A1 (de) * 2013-05-23 2014-11-27 Hauni Maschinenbau Ag Messsystem zur optischen Beurteilung eines stabförmigen Artikels der Tabak verarbeitenden Industrie
DE102014203158B4 (de) 2014-02-21 2016-01-14 Hauni Maschinenbau Ag Optische Prüfung von stabförmigen Artikeln der Tabak verarbeitenden Industrie
DE102014209000A1 (de) 2014-05-13 2015-11-19 Hauni Maschinenbau Ag Optische Prüfung von stabförmigen Artikeln der Tabak verarbeitenden Industrie
DE102014213244A1 (de) 2014-07-08 2016-01-14 Hauni Maschinenbau Ag Prüfung von stabförmigen Artikeln, insbesondere Filterzigaretten
DE202015004790U1 (de) 2015-07-03 2015-08-17 Ralf Stöcker Optische Inspektionseinrichtung zum Prüfen der Oberflächen von Artikeln der Nahrungs- und Genussmittelindustrie, insbesondere der Tabak verarbeitenden Industrie sowie der Pharmaindustrie
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Also Published As

Publication number Publication date
WO2006021261A1 (fr) 2006-03-02
CN101006335A (zh) 2007-07-25
DE102004040912A1 (de) 2006-03-09
US20070137661A1 (en) 2007-06-21
CN101006335B (zh) 2011-07-06
JP2008510973A (ja) 2008-04-10

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