EP0284732B1 - Procédé pour le calibrage automatique d'au moins une grandeur réglable des propriétés physiques d'un matériel en boudin pour la fabrication d'un article à fumer - Google Patents

Procédé pour le calibrage automatique d'au moins une grandeur réglable des propriétés physiques d'un matériel en boudin pour la fabrication d'un article à fumer Download PDF

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Publication number
EP0284732B1
EP0284732B1 EP88101628A EP88101628A EP0284732B1 EP 0284732 B1 EP0284732 B1 EP 0284732B1 EP 88101628 A EP88101628 A EP 88101628A EP 88101628 A EP88101628 A EP 88101628A EP 0284732 B1 EP0284732 B1 EP 0284732B1
Authority
EP
European Patent Office
Prior art keywords
rod
product parameter
actual values
physical properties
control
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.)
Expired - Lifetime
Application number
EP88101628A
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German (de)
English (en)
Other versions
EP0284732A2 (fr
EP0284732A3 (fr
Inventor
Hartmut Dr. Federle
Friedrich Dipl.-Ing. Walther
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.)
British American Tobacco Germany GmbH
Original Assignee
BAT Cigarettenfabriken 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 BAT Cigarettenfabriken GmbH filed Critical BAT Cigarettenfabriken GmbH
Publication of EP0284732A2 publication Critical patent/EP0284732A2/fr
Publication of EP0284732A3 publication Critical patent/EP0284732A3/fr
Application granted granted Critical
Publication of EP0284732B1 publication Critical patent/EP0284732B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod
    • A24C5/1871—Devices for regulating the tobacco quantity
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/906—Sensing condition or characteristic of continuous tobacco rod
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/908—Sensing unique characteristic or specific condition of finished product

Definitions

  • the invention relates to a method for controlling at least two of the physical properties of a material strand made of filter or tobacco material for the production of smokable articles, which are decisive for the quality of the finished smokable article, in particular in the manufacture of filters or cigarettes, which are specified in the preamble of claim 1 Genus.
  • Various techniques are used in the manufacture of cigarettes in order to enable the continuous regulation of the physical properties of the string of tobacco bevels during the manufacture of cigarettes and thus ultimately of the corresponding properties of the finished cigarettes. For example, it is known to determine the density of the strand, which in turn corresponds to its weight, which is essential for the constant weight of the cigarette, to compare the ascertained actual value with a target value and to form the strand as a function of the result of the To control comparison (DE-A-2 208 944). For example, the absorption of rays in the strand of tobacco fibers, in particular beta rays or microwaves, can be used to measure the density.
  • DE-A-2 728 797 discloses a method for producing cigarette filters in which the tensile resistance of the filter tow is determined, compared with a target value and the result of the comparison is used for the filter tow supply; the tow feed is controlled so that the pressure drop over the tow measured remains essentially constant.
  • Suitable sensors for measuring the hardness of the tobacco rod are shown in DE-A-3 306 543 and DE-A-3 404 635.
  • the older patent application DE-A-36 13 957 describes a method for regulating at least two of the physical properties of a strand made of smokable material, which are decisive for the quality of the finished product, in particular in the manufacture of cigarettes, in which the actual values of these properties, the respective differences between the actual values and the associated target values are determined, and finally control signals are obtained from the determined differences; these control signals are compared with each other so that the largest control signal at the moment can be given to a single actuator for the mass flow of the smokable article.
  • the control signals can be obtained from the hardness of the strand of smokable material, from the tensile resistance and / or from the weight of the strand and compared with one another.
  • these interferences include the moisture, the composition and the properties of the tobacco mixture, as well as environmental influences, machine settings and the tolerance fluctuations resulting from the wear of machine parts, in particular format tape and format parts, and the material properties of the filter material in the filter manufacturing machine, usually cellulose acetate, the plasticizer content (Content of triacetin) of the filter material and also the environmental influences, machine settings and wear of machine parts.
  • the essential environmental influences include the temperature and the humidity, while the speed and thus the transport speed must be taken into account as the essential machine setting.
  • the actual values for the weight and / or the hardness and / or the tensile resistance and / or the diameter must be determined by appropriate sensors and compared with predetermined target values in order to ultimately optimize the manufacturing process bring to.
  • the invention is therefore based on the object of providing a method for regulating at least two of the physical properties of a material strand for the production of smokable articles, in particular a tobacco strand or a strand of filter material, of the type specified, which are decisive for the quality of the finished smokable article, in which the problems mentioned above do not occur.
  • a method is to be proposed by means of which deviations from the normal operating state, that is to say in particular when starting off, but also during certain events, can be quickly and smoothly adjusted back to the optimal operating state.
  • Certain events can be: accidents, mixture changes, exceeding specified limit values.
  • the other essential secondary product parameters specified above in particular the hardness and / or the tensile resistance, have a certain value Actual value, which is recorded using the associated sensor and, after calculation and evaluation, is used as the target value for further control.
  • the usual, time-consuming re-calibrations of the corresponding product parameters with every change in the interference and the corresponding acquisition of an absolute measured value is therefore no longer necessary, since it has been found that the actual value for the tensile resistance is within the tolerance ranges of such a manufacturing process and / or the hardness which adjusts itself to the optimum density or the optimum diameter after adjustment to a more satisfactory one Control of manufacturing parameters leads.
  • the corresponding product parameters such as tensile resistance and / or hardness
  • the corresponding product parameters can be corrected using an easily measured correction variable that depends on the speed of the machine.
  • Moisture correction is also possible without any problems.
  • the relative new target value is determined according to a predetermined cycle using a mathematical function, in particular by averaging, that is to say the respectively existing actual value for the tensile resistance and / or the hardness is sampled, for example, every second and an average value is formed after every 60 scans, ie once per minute, which then serves as the target value for the further control.
  • a mathematical function in particular by averaging, that is to say the respectively existing actual value for the tensile resistance and / or the hardness is sampled, for example, every second and an average value is formed after every 60 scans, ie once per minute, which then serves as the target value for the further control.
  • the product parameters tensile resistance and hardness can either be controlled separately or in combination by means of an auto-selector circuit, as described in the earlier patent application P 36 13 957.2-23.
  • the control signals can be mathematically linked, e.g. B. averaging or linear combinations can be determined.
  • the respective setpoint which depends on the current mixture, the machine setting and the environmental influences, can either be used individually for each product parameter or as a combination by linking the respective actual values.
  • the corresponding settings are made very quickly, so that, for example, the target value of the primary product parameter, i.e. the diameter or the density or the weight, is reached within a few seconds when a machine starts up and then after about 2 minutes with the actual values determined - Values for the secondary product parameters, namely hardness, tensile resistance and / or diameter, as the target value the further regulation can be included.
  • the relative target value of the secondary product parameters tensile resistance, hardness and diameter can be recalculated for both external and internal events;
  • the external events include, in particular, the change of material or the machine stop, which are associated with a restart of the machine, while a limit violation of the primary or secondary product parameters can be considered as internal events. It can be determined, for example, that if the secondary product parameter tensile resistance and / or hardness deviates by more than ⁇ 10% from the present, relative target value, a new calculation is carried out; Such a recalculation can also be carried out in the event of a corresponding change in the primary product parameter, in the case of a cigarette manufacturing machine the weight or the density or the diameter.
  • This target value determination can be used not only on the cigarette manufacturing machine, but also on the filter manufacturing machine, it also being possible here to measure the corresponding product parameters, in particular weight or density, diameter and draw resistance.
  • a perforated belt 16 which serves as a conveying device, runs over the two rollers 12 and 14.
  • a vacuum chamber 18 is arranged between the two debris of the belt 16.
  • the tobacco transported from below in the direction of the arrow is sucked in by the negative pressure onto the belt 16 rotating in the direction of the arrow and taken with it, so that a tobacco layer 20 forms on the belt 16.
  • a "leveler”, namely trimmer disks 22, is used to adjust a tobacco layer 20 of a certain density, which can be moved in the vertical direction via a servomotor 24 as shown in FIG. 1.
  • the excess tobacco separated from the trimmer disks 22 is indicated by the reference numeral 26.
  • At least two different types of physical properties are measured on the tobacco rod and on the finished cigarette cut to the respective length, namely a primary product parameter and a secondary product parameter;
  • the primary product parameters are the weight or the density or the diameter of the tobacco rod or the finished cigarette and
  • the secondary product parameters are the tensile resistance and / or the hardness and / or the diameter of the tobacco rod or the finished cigarette.
  • the corresponding actual values are transferred from a sensor 30 for the tensile resistance ZW and a sensor 32 for the weight G together with associated nominal values from nominal value transmitters 34 and 36 to a first differential element 37 for the tensile resistance ZW and a second differential element 39 given for the weight G.
  • the difference signals from the two difference elements 37, 39 are passed to associated controllers 38, 40, which form corresponding control signals, generally according to a predetermined control characteristic.
  • the two control signals are fed to an auto-selector circuit 42 which detects the largest of the control signals and controls the servomotor 24 for the trimmer disks 22 by means of this largest control signal.
  • the position of the trimmer disks 22 is set depending on the tension resistance ZW, i.e. the tension resistance controller 38 controls the strand production.
  • the auto-selector circuit 42 selects the output signal of the controller 40 and uses this control signal, which is dependent on the measured weight G, for the adjustment of the trimmer disks 22.
  • the actual control variable namely the tensile resistance ZW
  • ZW the actual control variable
  • the controller 38 takes over the adjustment of the trimmer disks 22 for the tensile resistance ZW.
  • This regulation corresponds essentially to the method according to the older application DE-A-36 13 957.
  • the trimmer disks 22 are brought into the driving position; when a predetermined speed is reached, for example a speed of 1200 rpm, the weight or density control is switched on while the train resistance control remains switched off.
  • a predetermined speed for example a speed of 1200 rpm
  • the weight or density control is switched on while the train resistance control remains switched off.
  • the actual values for the pressure as a relative measure of the tensile resistance run up and finally reach the lower limit of a generally variable tolerance range, the "good" range; the current target values are determined after calculation and evaluation. Now the speed and / or humidity compensation can be used.
  • the actual values for the tensile resistance ZW are sampled in accordance with a predetermined cycle, so that, for example, 120 tensile resistance values are recorded within two minutes and a corresponding mean value is formed.
  • This mean value from the actual values of the tensile resistance ZW is formed in a corresponding circuit 41, which receives a clock signal derived, for example, from the machine cycle, and is then fed to the memory of the setpoint generator 34. As a rule, the saved, old target value is overwritten.
  • the weight control is switched to and the Tension resistance control switched off. If the train resistance control signal again reaches the tolerance range, the above-mentioned calculation of the mean value begins again with subsequent overwriting of the setpoint obtained in the memory of the setpoint generator 34, after which the train resistance control is switched on.
  • control loop in operation and the associated control signal can be displayed on a central console.
  • FIG. 2 shows another embodiment with three control variables, i.e. in addition to the control of the weight G and the tensile resistance ZW, the hardness or the deformation D is also controlled.
  • the three controlled systems are linked to the controllers 38, 40 and 44 via an auto-selector circuit 46 or via a mathematical link between at least two of these measured variables, e.g. Averaging, which controls the servomotor 24 for the leveler, namely the trimmer disks 22.
  • Averaging controls the servomotor 24 for the leveler, namely the trimmer disks 22.
  • limit value circuits 48, 50 and 52 which, in a manner known per se, provide the respective Compare the actual value with a specified limit value and generate an ejection signal if one of these limit values is exceeded, ie cigarettes are ejected.
  • the actual values of sensor 30 for tensile resistance ZW and sensor 32 for hardness or deformation D via circuits 53 and 54 are used as target values for the corresponding controlled variables fed to the control loops.
  • the circuits 53, 54 form clock-controlled averages from the respectively sampled actual values and also enable a further correction, for example a speed and / or a moisture correction of these target values.
  • the auto-selector circuit 42, 46 it is also possible to dispense with the auto-selector circuit 42, 46 and, for example, to work only with weight control during the start-up, but to switch to the tension resistance and / or hardness control after the start-up.
  • the weight control is only used for starting and simultaneously determining a suitable target value for the subsequent tension resistance or hardness control.
  • the diameter can also be used as a secondary product parameter, ie in such a case the weight would serve as the primary product parameter, so that after starting the weight control in connection with the diameter and / or tensile resistance and / or hardness regulation.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Claims (5)

  1. Procédé pour la régulation d'au moins deux des propriétés physiques d'un cordon de filtre ou de tabac essentielles pour la qualité de l'article à fumer terminé, intervenant dans la fabrication d'articles fumables sur une cordonneuse, en particulier lors de la fabrication de filtres ou de cigarettes,
    a) dans lequel les valeurs effectives de ces propriétés sont captées,
    b) les écarts relevés entre ces valeurs effectives et les valeurs de consigne correspondantes sont calculés, et
    c) des signaux de régulation pour des organes de réglage qui influencent la masse de la matière dont est fait le cordon sont obtenus à partir des écarts relevés,
       caractérisé
    d) en ce qu'au cours du démarrage de la cordonneuse ou lors de certaines anomalies survenant dans cette cordonneuse, la régulation ne s'opère qu'au moyen d'un seul paramètre primaire du produit représentant l'une de ces propriétés physiques essentielles du cordon de matière,
    e) en ce qu'à l'atteinte de la valeur de consigne de ce paramètre primaire du produit, les valeurs effectives d'au moins un autre paramètre secondaire du produit, représentant une autre de ces propriétés physiques essentielles du cordon de matière, sont captées, et
    f) en ce qu'au moins l'une de ces valeurs effectives est utilisée, après calcul et exploitation, comme valeur de consigne pour la régulation qui est alors insérée ou ajoutée au moyen de ce paramètre secondaire du produit.
  2. Procédé suivant la revendication 1, caractérisé en ce que le poids du cordon de matière ou son diamètre sert de paramètre primaire du produit.
  3. Procédé suivant l'une des revendications 1 ou 2, caractérisé en ce que la dureté et/ou la résistance à la traction et/ou le diamètre du cordon de matière servent de paramètre secondaire du produit.
  4. Procédé suivant l'une quelconque des revendications 1 à 3, caractérisé en ce qu'à l'atteinte de la valeur de consigne du paramètre primaire du produit, plusieurs valeurs effectives d'un paramètre secondaire du produit sont captées et une moyenne correspondante est établie, laquelle sert de valeur de consigne pour cette régulation.
  5. Procédé suivant l'une quelconque des revendications 1 à 4, caractérisé en ce qu'à l'atteinte de la valeur de consigne du paramètre primaire du produit, au moins une autre régulation est ajoutée avec un paramètre secondaire du produit.
EP88101628A 1987-04-02 1988-02-04 Procédé pour le calibrage automatique d'au moins une grandeur réglable des propriétés physiques d'un matériel en boudin pour la fabrication d'un article à fumer Expired - Lifetime EP0284732B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3711142 1987-04-02
DE19873711142 DE3711142A1 (de) 1987-04-02 1987-04-02 Verfahren zur automatischen kalibrierung von mindestens einer regelgroesse der physikalischen eigenschaften eines materialstrangs fuer die herstellung von rauchbaren artikeln

Publications (3)

Publication Number Publication Date
EP0284732A2 EP0284732A2 (fr) 1988-10-05
EP0284732A3 EP0284732A3 (fr) 1991-09-25
EP0284732B1 true EP0284732B1 (fr) 1993-04-21

Family

ID=6324730

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101628A Expired - Lifetime EP0284732B1 (fr) 1987-04-02 1988-02-04 Procédé pour le calibrage automatique d'au moins une grandeur réglable des propriétés physiques d'un matériel en boudin pour la fabrication d'un article à fumer

Country Status (7)

Country Link
US (1) US4848370A (fr)
EP (1) EP0284732B1 (fr)
AU (1) AU605846B2 (fr)
CA (1) CA1300720C (fr)
DE (2) DE3711142A1 (fr)
DK (1) DK164188A (fr)
ZA (1) ZA882313B (fr)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
US4967739A (en) * 1988-06-11 1990-11-06 Korber Ag Method of and apparatus for making rod-shaped articles of the tobacco processing industry
DE10200320A1 (de) * 2002-01-07 2003-07-17 Hauni Maschinenbau Ag Verfahren und Vorrichtung zur Herstellung eines Faserstranges der tabakverarbeitenden Industrie
US7027148B2 (en) * 2002-05-01 2006-04-11 Tews Elektronik Method and apparatus for determining the triacetin content in filter plugs
EP1389432A1 (fr) * 2002-08-16 2004-02-18 Hauni Maschinenbau AG Möthode pour juster le diamètre d'un filtre à cigarette
EP2587253B1 (fr) * 2011-10-26 2014-04-23 TEWS Elektronik GmbH & Co. KG Procédé et dispositif de mesure en ligne la teneur de plastifiant dans un bâtonnet-filtre sans fin
DE102017123503A1 (de) * 2017-10-10 2019-04-11 Hauni Maschinenbau Gmbh Verfahren und System zum Herstellen von stabförmigen Produkten der Tabak verarbeitenden Industrie
CN112630093A (zh) * 2020-12-16 2021-04-09 安徽中烟工业有限责任公司 一种滤棒吸阻稳定性影响要素的检测方法

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DE2208944A1 (de) * 1972-02-25 1973-09-06 Hauni Werke Koerber & Co Kg Verfahren und vorrichtung zum erfassen der dichte eines zigarettenstranges oder dergleichen stranges aus tabak oder filtermaterial
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US3999134A (en) * 1974-08-29 1976-12-21 Hauni-Werke Korber & Co., Kg Method and apparatus for measuring the density of filling material in rod-shaped smokers' products taking into account the moisture of the filling material
DE2760354C2 (fr) * 1976-07-02 1990-03-15 Molins Ltd., London, Gb
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Also Published As

Publication number Publication date
AU1405388A (en) 1988-10-06
CA1300720C (fr) 1992-05-12
DE3880357D1 (de) 1993-05-27
EP0284732A2 (fr) 1988-10-05
DE3711142A1 (de) 1988-10-20
DK164188A (da) 1988-10-03
DK164188D0 (da) 1988-03-25
US4848370A (en) 1989-07-18
AU605846B2 (en) 1991-01-24
ZA882313B (en) 1988-12-28
EP0284732A3 (fr) 1991-09-25
DE3711142C2 (fr) 1989-02-02

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