EP0399951A1 - Verfahren zum Formen eines Stranges bei der Herstellung von Zigaretten und Einrichtung dafür - Google Patents

Verfahren zum Formen eines Stranges bei der Herstellung von Zigaretten und Einrichtung dafür Download PDF

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Publication number
EP0399951A1
EP0399951A1 EP90810360A EP90810360A EP0399951A1 EP 0399951 A1 EP0399951 A1 EP 0399951A1 EP 90810360 A EP90810360 A EP 90810360A EP 90810360 A EP90810360 A EP 90810360A EP 0399951 A1 EP0399951 A1 EP 0399951A1
Authority
EP
European Patent Office
Prior art keywords
layer
tobacco
clipper
measurement
conveyor belt
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Withdrawn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
EP90810360A
Other languages
English (en)
French (fr)
Inventor
Bernard Tallier
Michael Lauenstein
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.)
Philip Morris Products SA
Original Assignee
Fabriques de Tabac Reunies SA
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 Fabriques de Tabac Reunies SA filed Critical Fabriques de Tabac Reunies SA
Publication of EP0399951A1 publication Critical patent/EP0399951A1/de
Withdrawn legal-status Critical Current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

Definitions

  • the density of tobacco particles does not have a constant value along each cigarette. On the contrary, it follows a determined profile. However, we are trying to ensure that this profile is the same for all cigarettes. Similarly, it is sought to control with as much precision as possible the degree of humidity and the other characteristics of the tobacco particles.
  • This device is ca For example, it is possible to read the filling rate of the tobacco particles twenty-four times along each cigarette and to record and display the data thus captured. It automatically eliminates cigarettes which are deemed to be defective in a production of cigarettes reaching values of 5,000 or even 10,000 cigarettes per minute.
  • the clipper is the device that controls the filling rate of the rod so that the data captured during production must act on this device so as to adjust its position permanently.
  • this adjustment method and the corresponding device have defects due to the fact that the measurement of the weakening of the intensity of a radiation passing through the layer is not a reliable data.
  • This weakening can come either from an excessive thickness of the layer, or from the fact that relatively large particles are pressed against the strip. These two situations produce the same effect on the measuring device, so that it is not in a position to discriminate between them.
  • the object of the present invention is therefore to improve the measurement methods so as to eliminate the confusion which previously existed in the devices of the prior art.
  • one of the objects of the present invention is a process for the formation of a continuous rod in the manufacture of cigarettes, comprising the suction of an air flow entraining tobacco particles, to form a layer of tobacco applied against a conveyor belt, the clipping of this layer, and one or more measurement operations providing one or more data which control the clipping operation, characterized in that two measurement operations are carried out continuously before the clipping, these measurements relate to the height of the layer and to its porosity, a parameter corresponding to the linear density of the layer of tobacco is formed with the values obtained from said measurement operations and by application of a predetermined algorithm. this parameter is used as data to control the clipping operation.
  • Another object of the invention is a device for implementing the method according to claim 1, comprising a conveyor belt, means for sucking in an air flow, capable of conveying a flow of tobacco particles with the air flow sucked in, and to concentrate these particles in the form of a layer pressed against the conveyor belt, a clipping device and a device for controlling the thickness of the layer, characterized in that the latter device comprises means separate measurement for the porosity and the height of said tobacco layer, signal processing means capable of developing a control parameter from measurement signals emitted by the measurement means, and a means for adjusting the action of the clipper, reacting to the instantaneous value of said parameter.
  • the general principle of the formation of the sausage is illustrated in fig. 2.
  • An endless conveyor belt 1, which is made of nylon permeable to the air is mounted on rollers 2 and moves in the direction indicated by the arrow 3.
  • a device 4 for supplying tobacco is placed under the right end of device 1, 2.
  • the tobacco particles are loose in a reservoir and, by means of a fan (not shown), an air flow 6 is created which crosses the two strands of the strip 1 and which conveys the tobacco particles in an ascending and oblique direction so as to accumulate them in the form of a layer 5 under the lower strand of the strip 1.
  • the compression ratio and the thickness of the layer 5 roughly depend on the characteristics of the air flow.
  • the tube itself takes its final structure thanks to two devices which, as we have seen, can be combined and which are shown diagrammatically in FIG. 2 in the form of the clipper 7 and the intermittent compression cam 8.
  • the tobacco particles, separated by the clipper, fall into a tank 9 and are collected in the direction of the supply tank 4, by means which do not are not shown.
  • the flange proper 10, which now has its final compression and cross-sectional properties, is led downstream. It is wrapped in a continuous strip of paper, which will then be glued longitudinally and then sectioned to form cigarettes.
  • Fig. 3 shows in more detail, although schematically, the conditions for forming the layer 5.
  • the air flow 6 is generally at a pressure below atmospheric pressure since it is sucked in by a fan, but the pressure, on the upper side of the strip 1, is lower than the pressure in the lower space, the pressure drop depending on the fact that the tobacco particles accumulated against the strip 1 obstruct the passage of air.
  • the thickness of the tobacco layer 5 is irregular.
  • waves form which the clipper 7 has the function of regularizing.
  • the thickness of the tobacco layer in its downstream part designated by 10
  • the thickness of the tobacco layer is determined by the height of a pair of rotating discs, driven by a motor and mounted on a support which can be either fixed or movable in height.
  • the position of the clipper is fixed.
  • a direct current servo motor 11 placed above the strip 1 facing the clipper, can actuate a push rod 12 up or down, so as to modify the position of strip 1 opposite the clipper, which adjusts the thickness of layer 10.
  • two data sensors are provided, upstream of the clipper and the thickness regulator 11, 12 which are constituted, in the particular case, by a measuring device with a laser beam 13, which determines the instantaneous height of the layer 5 at the place where it is placed and by a pressure sensor 14, located immediately downstream of the height measuring instrument 13.
  • the height measurement 13 is of a type known per se. It can operate by means of a laser beam of which it measures the weakening of the intensity during the crossing of the layer 5. It can also be constituted by an instrument for measuring the intensity of an infrared radiation or of a flow of electrons, that is to say of a ⁇ radiation. This ins measuring instrument is capable of giving repeated indications, taken at intervals of 0.5 to 12 ms and of producing electronic signals corresponding to the measured values, so as to transmit them to the apparatus for developing the parameter of ordered.
  • the pressure sensor 14 measures the pressure difference between the lower zone and the upper zone of the layer 5 according to a surface whose dimension, in the direction of movement of the strip 1, is very small, while the dimension in the direction perpendicular to the drawing covers the entire width of layer 5. It therefore measures the porosity of the tobacco accumulated in layer 5.
  • the pressure sensor can emit signals giving the measurement values at time intervals of 0.5 to 12 ms , so that, for example, for a flow rate of the order of 5,000 / min and a measurement time constant of 0.5 ms, the apparatus can emit twenty-four measurement signals over the length of each cigarette. These signals are used to make two corrections to each cigarette.
  • Fig. 4 again shows the main elements of the tube forming device.
  • the motor 11 is controlled by an encoder 15 which receives its orders from a position transducer 16, itself connected to a central unit 17.
  • the height measurement signals emitted by the measurement device 13 are amplified at 18 and transmitted to a calculation unit 19 which also receives, from an amplifier 20, the pressure measurement signals transmitted by the measurement element 14.
  • the calculation unit 19 implements a predetermined algorithm which provides, at its output, a signal representing a parameter F, which is transmitted to the main processing unit 17. It is from the values of this parameter that the orders are developed and transmitted by the transducer 16 to the encoder 15 and, consequently, by the motor 11 to the linear actuator which controls the position of the element 12.
  • control and statistical measurement unit 21 can receive the data necessary for its operation from the central unit 17. It can also receive indications from a radioactivity controller 22, placed on the path of the rod and controlling the sausage from the point of view of possible nuclear emissions.
  • control system 21 can also process other data collected downstream on the rod or upstream in the reserve 4 of the loose tobacco particles.
  • An integrated measurement and adjustment control unit is thus produced, capable of operating with an extraordinarily fast response time constant, capable of being programmed at will.

Landscapes

  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
EP90810360A 1989-05-25 1990-05-16 Verfahren zum Formen eines Stranges bei der Herstellung von Zigaretten und Einrichtung dafür Withdrawn EP0399951A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2012/89A CH683227A5 (fr) 1989-05-25 1989-05-25 Procédé pour la formation d'un boudin continu dans la fabrication des cigarettes et appareil pour la mise en oeuvre du procédé.
CH2012/89 1989-05-25

Publications (1)

Publication Number Publication Date
EP0399951A1 true EP0399951A1 (de) 1990-11-28

Family

ID=4223839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810360A Withdrawn EP0399951A1 (de) 1989-05-25 1990-05-16 Verfahren zum Formen eines Stranges bei der Herstellung von Zigaretten und Einrichtung dafür

Country Status (3)

Country Link
US (1) US5085229A (de)
EP (1) EP0399951A1 (de)
CH (1) CH683227A5 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1234513A1 (de) * 2001-02-26 2002-08-28 G. D Societa per Azioni Verfahren und Anlage zur Bildung eines Tabakstromes

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9182047B2 (en) 2013-03-13 2015-11-10 Kohler Mira Limited Valve with fail-safe device
EP3232827B1 (de) * 2014-12-19 2019-05-15 Philip Morris Products S.a.s. Tabakstangenerzeuger mit tabakrückgabe
WO2019123210A1 (en) * 2017-12-22 2019-06-27 G.D S.P.A. Method and unit for crimping a web of material for the tobacco industry
CN111213907B (zh) * 2020-01-07 2022-11-08 深圳烟草工业有限责任公司 一种烟支重量控制系统及方法
CA3118501A1 (en) * 2021-05-14 2022-11-14 Saman Deihimi Fully automatic method and apparatus to store, crush and roll cannabis into a rod or joint

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2299822A1 (fr) * 1975-02-10 1976-09-03 Japan Tobacco & Salt Public Dispositif de controle de la charge de tabac dans une machine de fabrication de cigarettes
GB2028097A (en) * 1978-07-28 1980-03-05 Hauni Werke Koerber & Co Kg Forming smokable rods
GB2196524A (en) * 1986-10-29 1988-05-05 Molins Plc Cigarette making machine weight control
GB2207594A (en) * 1987-07-31 1989-02-08 Koerber Ag Trimming accumulations of fibers of tobacco or other smokable material
GB2207595A (en) * 1987-07-31 1989-02-08 Koerber Ag Trimming a stream of tobacco fibers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3705576A1 (de) * 1987-02-21 1988-09-01 Hauni Werke Koerber & Co Kg Verfahren und anordnung zum bilden eines stranges aus tabak

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2299822A1 (fr) * 1975-02-10 1976-09-03 Japan Tobacco & Salt Public Dispositif de controle de la charge de tabac dans une machine de fabrication de cigarettes
GB2028097A (en) * 1978-07-28 1980-03-05 Hauni Werke Koerber & Co Kg Forming smokable rods
GB2196524A (en) * 1986-10-29 1988-05-05 Molins Plc Cigarette making machine weight control
GB2207594A (en) * 1987-07-31 1989-02-08 Koerber Ag Trimming accumulations of fibers of tobacco or other smokable material
GB2207595A (en) * 1987-07-31 1989-02-08 Koerber Ag Trimming a stream of tobacco fibers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1234513A1 (de) * 2001-02-26 2002-08-28 G. D Societa per Azioni Verfahren und Anlage zur Bildung eines Tabakstromes
US6698434B2 (en) 2001-02-26 2004-03-02 G.D Societa′ per Azioni Method and unit for forming a tobacco bead

Also Published As

Publication number Publication date
US5085229A (en) 1992-02-04
CH683227A5 (fr) 1994-02-15

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