EP2796061A1 - Vorrichtung und Verfahren zur Messung von Kapseln in Zigarettenfiltern - Google Patents

Vorrichtung und Verfahren zur Messung von Kapseln in Zigarettenfiltern Download PDF

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Publication number
EP2796061A1
EP2796061A1 EP13002175.1A EP13002175A EP2796061A1 EP 2796061 A1 EP2796061 A1 EP 2796061A1 EP 13002175 A EP13002175 A EP 13002175A EP 2796061 A1 EP2796061 A1 EP 2796061A1
Authority
EP
European Patent Office
Prior art keywords
cigarettes
cigarette
filter
drum
measuring
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Withdrawn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
EP13002175.1A
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English (en)
French (fr)
Inventor
Dimitar Yankov Yanchev
Udo Schlemm
Rainer Herrmann
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.)
Aiger Group AG
TEWS Elektronik GmbH and Co KG
Original Assignee
Aiger Group AG
TEWS Elektronik GmbH and Co KG
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 Aiger Group AG, TEWS Elektronik GmbH and Co KG filed Critical Aiger Group AG
Priority to EP13002175.1A priority Critical patent/EP2796061A1/de
Publication of EP2796061A1 publication Critical patent/EP2796061A1/de
Withdrawn legal-status Critical Current

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    • 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
    • A24C5/322—Transporting cigarettes during manufacturing
    • A24C5/327—Construction details of the cigarette transport drum
    • 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 present invention relates to a device as well as a method for measuring capsules in cigarette filters, in particular in moving cigarette filters.
  • microwave resonators are used for a plurality of purposes. For example, microwave resonators determine the shift of a resonance frequency and the widening of a resonance curve based on the dielectric properties of a sample inserted in the resonator cavity or its stray field. From the change in the resonance frequency and/or the broadening of the resonance curve, one can determine the dielectric properties of the samples and in particular their moisture and/or density.
  • a microwave measuring instrument used for this purpose consists of a microwave resonator to generate at least a resonance mode in a locally bounded region and an analysis unit to analyze at least one of the characteristic values of the resonance mode.
  • the microwave resonator is a cavity resonator.
  • a method and a device have become known for measuring a moisture value of dielectric materials, in which a shift of the resonance frequency is analyzed for at least two resonance modes having separate frequencies and a density-independent moisture value is calculated form the measured shifts of the resonance frequencies.
  • the microwave resonator used here consists of two coaxial resonators with measurements taken in their stray field.
  • the resonator used here is a cylindrical, closed resonator with which the moisture value of tobacco can be determined, for example.
  • the problem underlying the invention is to provide a device, as well as a method, for measuring capsules in filter cigarettes moving transversely to their longitudinal direction, that has a sufficiently large measuring region and simultaneously has a measuring region that is sufficiently localized to measure individual cigarettes having a small distance to adjoining cigarettes.
  • the device according to the invention is provided and intended for the tobacco-processing industry.
  • the device according to the invention pertains to a cigarette machine.
  • the device has a filter-affixing arrangement with a conveyor arrangement for cigarettes.
  • the filter-affixing arrangement the cigarette rod and the filter rod are brought together in such a manner, that the filter is affixed to the cigarette and, where appropriate, connected to it.
  • the conveyor arrangement of the filter-affixing arrangement transports the cigarettes with the affixed filter at high speed transversely to the longitudinal axis of the cigarettes through a measuring region of the coaxial sensor.
  • the invention involves on the one hand the knowledge that a preferred location for measuring capsules lies within the cigarette filter in the cigarette machine directly after affixing the filter.
  • a preferred location for measuring capsules lies within the cigarette filter in the cigarette machine directly after affixing the filter.
  • these cigarettes can be reliably detected.
  • a coaxial sensor with its measuring region is sufficient to achieve reliable measurements in regard to the capsules. Accordingly, the spatial expansion of the stray field is smaller than the distance to adjoining cigarettes. To prevent damaging the cigarettes, the measurement can be done in a no-contact manner.
  • the conveyor arrangement has a rotatable drum along whose circumference the cigarettes are arranged and protrude with at least part of their filter, to be guided through the measuring region of the coaxial sensor.
  • the cigarettes can be positioned in such a way, that the filter protrudes over the drum and is guided through the measuring region of the coaxial sensor. Since a coaxial sensor is generally built small, such a one can be easily arranged in the vicinity of the rotatable drum. Also, the stray field of a coaxial sensor is sufficiently localized, so that cigarettes arranged on a drum do not interfere with each other.
  • the drum can also be equipped with a circumferential recess in the manner of a ring groove, which creates a space under the cigarette filter.
  • a measurement with a coaxial sensor directed at the cigarette filter is not disrupted by the material of the drum.
  • the conveyor arrangement has a second rotating drum with a second coaxial sensor.
  • the two, preferably counter-rotating, drums are arranged in such a manner that the cigarettes are transferred from the first drum to the second drum and are measured on both coaxial sensors.
  • the cigarette is turned 180° relative to the drum. This means that a capsule not located in the center of the cigarette filter, which may possibly not have been recorded in a first measurement at the first drum, has subsequently changed its position relative to the sensor in the second measurement at the second drum, and can have said position recorded.
  • the coaxial sensor records a change of the resonance frequency and/or a broadening of the resonance curve.
  • the measurement values recorded by each of the coaxial sensors can be analyzed when they cross through the maximum of the measurement field to determine a density value for the cigarette.
  • the density value analyzed for the cigarette already offers good information in regard to what extent capsules, with aroma materials, incorporated in a cigarette filter are present. Also, the density values can give information for example about the presence of filter segments within the cigarette filter.
  • the analysis unit is configured in such a way to determine a moisture value for the cigarette in the maximum of the measurement field.
  • the moisture value is particularly of interest when defective capsules with aroma substances are to be detected within a cigarette filter, because the interaction between the aroma substances and the microwave field are dependent on whether these are bound in a capsule or are distributed over the filament structure of the fiber material.
  • a measurement device that has a coaxial sensor as a microwave resonator.
  • the method according to the invention contains the method step: moving of cigarettes with their filters through a measuring region of the microwave resonator, wherein the movement direction is transverse to the longitudinal direction of the coaxial sensor. In this movement, the cigarette to be measured is run past the coaxial sensor in such a manner, that the contact direction is transverse to the longitudinal direction of the cigarettes. In a subsequent method step, the dielectric properties of a cigarette filter located in the measuring region are measured.
  • the measured dielectric properties of the cigarette filter are analyzed in regard to the absence or presence of the capsule in the cigarette filter.
  • a capsule incorporated into the cigarette filter consists of a different material than the filter tow, so that here other dielectric properties exist. Based on the change of the dielectric properties, one can then deduce whether the capsule is absent or present in the cigarette filter.
  • the movement of the cigarettes occurs through the counter-rotation of the drums, each of which is assigned a microwave resonator designed as a coaxial sensor.
  • each cigarette is first measured at a first drum and then transferred to the second drum, where it is measured again.
  • the advantage of two rotating drums lies in that when transferring the cigarette from the first drum to the second drum, it changes its orientation relative to the drum and thus relative to the associated coaxial sensor.
  • density and/or moisture values of a single cigarette to be inspected are compared with the average values of previous cigarettes. From the comparison, one can deduce whether there is a defective, in particular a recently defective, capsule if the values deviate from the average values by more than one of the predetermined differential values.
  • Fig. 1 depicts a view of a cigarette machine with a feed roller that transports cigarettes after affixing the filter.
  • the finished cigarettes are carried to the cigarette machine directly after affixing the filter.
  • the feed rollers have a diameter of 23 cm for example, wherein the cigarettes have a clearance of approximately 1-2 cm in the circumferential direction on the feed rollers.
  • Each cigarette 10, as depicted in figure 2 is held in its central region so that a cigarette head 12 and a filter head 14 protrude beyond holding region 16 of feed roller 18.
  • An aroma capsule 20 is provided in cigarette filter 12.
  • Aroma capsules are used in cigarettes and other tobacco products so that aroma substances do not burn, but can be inhaled unburned jointly with the tobacco smoke.
  • Aroma capsules 20 contain mostly liquid aroma substances, such as menthol. Prior to smoking, the smoker crushes the aroma capsule in the filter so that the aroma substances are released in cigarette filter 12 and can be inhaled.
  • Measurements using microwaves on a feed roller represent a particular challenge for a measurement using a microwave sensor.
  • cigarette filter 12 must be guided through the measuring region, although the space in an existing cigarette machine for a sensor is limited.
  • the measuring region of the microwave resonator must be localized in the circumferential direction to such an extent that an individual cigarette can be measured. In doing so, it is important that given a one-centimeter clearance of the cigarette in the measuring region, the signals of various cigarettes can be separated.
  • Fig. 2b depicts a configuration of the drum-shaped feed roller 18 with a recess 21 under cigarette filter 12 and aroma capsule 20.
  • Fig. 3 depicts a schematic view of a cigarette 3 with a cigarette filter 4 into which an aroma capsule has been incorporated.
  • Coaxial sensor 1 is arranged near cigarette filter 4, wherein cigarette filter 4 is moved through the measuring region of the coaxial sensor.
  • Each of the coaxial sensors 1 has a resonator housing 22, whose interior wall bounds resonator cavity 24.
  • Pin 26 arranged in resonator cavity 24 defines the longitudinal direction of coaxial sensor 1.
  • Resonator cavity 24 is enclosed by a cover 28.
  • the depicted resonators are coaxial resonators that, contrary to cavity resonators, have a fundamentally different construction. Cavity resonators are constructed similar to waveguides and have a cut-off frequency.
  • the coaxial sensor has, like a coaxial cable, transversal electromagnetic waves (TEM waves) and consequently functions without a cut-off frequency.
  • TEM waves transversal electromagnetic waves
  • measurements are taken in its stray field that, by through cover 28, forms the measuring region of the sensor outside of the sensor body.
  • Fig. 4 depicts an example of a density measuring process over the time period when a cigarette with an aroma capsule 2 in filter 4 is moved past the coaxial sensor. It can be clearly seen that for an intact capsule, a distinct maximum emerges (cf. curve 30). In contrast to that, the peak value of the density in curve 32 is not as pronounced, which can be attributed to the aroma capsule already being broken at an earlier point in time. For a missing capsule, there is an evenly distributed density value 34. By analyzing the density signals, one can readily determine whether an intact capsule 2 is present in the cigarette filter or not.
  • Fig. 8 depicts a specially preferred arrangement of two conveying drums 1, 1'.
  • Conveying drums 1, 1' counter-rotate, wherein cigarettes 2 are transferred by conveying drum 1 at approximately the 12 o'clock position to conveying drum 1'.
  • Each of the conveying drums has along the circumference receiving slots for the cigarettes to be conveyed, which are arranged at about half the depth into the receiving slot.
  • the cigarettes then run counter-clockwise in the second conveying drum 1', starting at the 6 o'clock position.
  • the cigarettes are initially measured at drum 1 at about the 9 o'clock position and at about the 3 o'clock position at conveying drum A'.
  • coaxial sensor 3 records the cigarettes in the receiving slot on drum 1 better in their exterior region, then this region is arranged radially inward in conveying drum 1' so that the remaining region of the cigarette filter is measured by coaxial sensor 3'.
  • Defective capsules incorrect position, missing capsules, double capsules, just-broken capsules or those broken some time ago
  • Defective capsules can be determined very precisely, especially when the single value for density or moisture determined in the maximum of the measuring field is compared with the average density and moisture values of a certain number of previous cigarettes. If the individual value deviates excessively from this average value, the just measured cigarette is a cigarette with a defective capsule.
  • coaxial sensors have a measuring field that can be concentrated on a small volume of space so that there is sufficient spatial resolution that enables one to measure individual cigarette filters that can have a clearance of 1 cm or less.
EP13002175.1A 2013-04-25 2013-04-25 Vorrichtung und Verfahren zur Messung von Kapseln in Zigarettenfiltern Withdrawn EP2796061A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13002175.1A EP2796061A1 (de) 2013-04-25 2013-04-25 Vorrichtung und Verfahren zur Messung von Kapseln in Zigarettenfiltern

Applications Claiming Priority (1)

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EP13002175.1A EP2796061A1 (de) 2013-04-25 2013-04-25 Vorrichtung und Verfahren zur Messung von Kapseln in Zigarettenfiltern

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EP2796061A1 true EP2796061A1 (de) 2014-10-29

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2762014A3 (de) * 2013-02-05 2016-06-08 HAUNI Maschinenbau AG Förderung von stabförmigen Artikeln der Tabak verarbeitenden Industrie mit druckempfindlichen Objekten
EP2965640B1 (de) * 2014-07-08 2018-12-05 Hauni Maschinenbau GmbH Prüfung von stabförmigen artikeln, insbesondere filterzigaretten
WO2022101010A1 (de) * 2020-11-11 2022-05-19 TEWS ELEKTRONIK GmbH & Co.KG Verfahren und vorrichtung zur erkennung von kapselfehlern in einem filter der tabakverarbeitenden industrie

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004119A1 (de) 1990-02-10 1991-08-14 Tews Elektronik Dipl Ing Manfr Verfahren zur messung der feuchte eines messgutes mit hilfe von mikrowellen und vorrichtung zur durchfuehrung des verfahrens
EP0910962A2 (de) * 1997-10-14 1999-04-28 G.D Societa' Per Azioni Filterherstellungsmaschine für ventilierte Tabakprodukte
WO2001089329A2 (en) * 2000-05-24 2001-11-29 Philip Morris Products, Inc. Cigarette inspection device
EP1467191A1 (de) 2003-04-08 2004-10-13 TEWS ELEKTRONIK Dipl.-Ing. Manfred Tews Verfahren und Vorrichtung zum Bestimmen der Masse von portionierten Wirkstoffeinheiten
EP1739411A1 (de) 2005-07-01 2007-01-03 TEWS ELEKTRONIK Dipl.-Ing. Manfred Tews Vorrichtung und Verfahren zum Detektieren und Aussondern von fehlerhaften Zigaretten
DE102007002491B3 (de) * 2007-01-11 2007-10-11 Hauni Maschinenbau Ag Fördern und Übergabe eines stabförmigen Artikels der Tabak verarbeitenden Industrie
DE102007041429A1 (de) 2007-08-28 2009-03-12 Tews Elektronik Dipl.-Ing. Manfred Tews Verfahren und Vorrichtung zur Messung eines Feuchtewertes von dielektrischen Stoffen
EP2207027A2 (de) 2009-01-13 2010-07-14 TEWS Elektronik GmbH & Co. KG Verfahren und Vorrichtung zur Messung von Masse und Dichte und/oder zur Messung der Feuchte von portionierten Einheiten, wobei sie mittels eines Trägermaterials durch einen Mikrowellenresonator geführt werden
EP2243385A2 (de) * 2009-04-21 2010-10-27 HAUNI Maschinenbau AG Kapselüberwachung und Kapselpositionsregelung in Filtern der Tabak verarbeitenden Industrie

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004119A1 (de) 1990-02-10 1991-08-14 Tews Elektronik Dipl Ing Manfr Verfahren zur messung der feuchte eines messgutes mit hilfe von mikrowellen und vorrichtung zur durchfuehrung des verfahrens
EP0910962A2 (de) * 1997-10-14 1999-04-28 G.D Societa' Per Azioni Filterherstellungsmaschine für ventilierte Tabakprodukte
WO2001089329A2 (en) * 2000-05-24 2001-11-29 Philip Morris Products, Inc. Cigarette inspection device
EP1467191A1 (de) 2003-04-08 2004-10-13 TEWS ELEKTRONIK Dipl.-Ing. Manfred Tews Verfahren und Vorrichtung zum Bestimmen der Masse von portionierten Wirkstoffeinheiten
EP1739411A1 (de) 2005-07-01 2007-01-03 TEWS ELEKTRONIK Dipl.-Ing. Manfred Tews Vorrichtung und Verfahren zum Detektieren und Aussondern von fehlerhaften Zigaretten
DE102007002491B3 (de) * 2007-01-11 2007-10-11 Hauni Maschinenbau Ag Fördern und Übergabe eines stabförmigen Artikels der Tabak verarbeitenden Industrie
DE102007041429A1 (de) 2007-08-28 2009-03-12 Tews Elektronik Dipl.-Ing. Manfred Tews Verfahren und Vorrichtung zur Messung eines Feuchtewertes von dielektrischen Stoffen
EP2207027A2 (de) 2009-01-13 2010-07-14 TEWS Elektronik GmbH & Co. KG Verfahren und Vorrichtung zur Messung von Masse und Dichte und/oder zur Messung der Feuchte von portionierten Einheiten, wobei sie mittels eines Trägermaterials durch einen Mikrowellenresonator geführt werden
EP2243385A2 (de) * 2009-04-21 2010-10-27 HAUNI Maschinenbau AG Kapselüberwachung und Kapselpositionsregelung in Filtern der Tabak verarbeitenden Industrie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TEWS: "Feuchtemessung mit der Mikrowellen-Resonanz-Technik", pages 1 - 23, XP002586164, Retrieved from the Internet <URL:http://www.kundert-ing.ch/display.cfm/id/101618/disp_type/display/filename/Tews_Uebersichtsbroschuere.pdf> [retrieved on 20100607] *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2762014A3 (de) * 2013-02-05 2016-06-08 HAUNI Maschinenbau AG Förderung von stabförmigen Artikeln der Tabak verarbeitenden Industrie mit druckempfindlichen Objekten
EP2965640B1 (de) * 2014-07-08 2018-12-05 Hauni Maschinenbau GmbH Prüfung von stabförmigen artikeln, insbesondere filterzigaretten
WO2022101010A1 (de) * 2020-11-11 2022-05-19 TEWS ELEKTRONIK GmbH & Co.KG Verfahren und vorrichtung zur erkennung von kapselfehlern in einem filter der tabakverarbeitenden industrie

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