EP0587958A1 - Verfahren und vorrichtung zur Regulierung der Geschwindigkeit eines Produktes in einer Leitung und Zigarettenherstellungsmaschine mit einer solchen Vorrichtung - Google Patents

Verfahren und vorrichtung zur Regulierung der Geschwindigkeit eines Produktes in einer Leitung und Zigarettenherstellungsmaschine mit einer solchen Vorrichtung Download PDF

Info

Publication number
EP0587958A1
EP0587958A1 EP92810704A EP92810704A EP0587958A1 EP 0587958 A1 EP0587958 A1 EP 0587958A1 EP 92810704 A EP92810704 A EP 92810704A EP 92810704 A EP92810704 A EP 92810704A EP 0587958 A1 EP0587958 A1 EP 0587958A1
Authority
EP
European Patent Office
Prior art keywords
tobacco
speed
valve
pipe
machine
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Withdrawn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
EP92810704A
Other languages
English (en)
French (fr)
Inventor
Michael Lauenstein
Bernard Tallier
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
Priority to EP92810704A priority Critical patent/EP0587958A1/de
Publication of EP0587958A1 publication Critical patent/EP0587958A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • A24C5/39—Tobacco feeding devices
    • A24C5/392—Tobacco feeding devices feeding pneumatically

Definitions

  • the present invention relates to regulating the speed of transport of a product in a pipe, in particular tobacco, and provides a method and a device for this purpose, as well as a cigarette machine equipped with this device.
  • a device for regulating the speed of tobacco is described in EP-A-0,317,504. This device being placed upstream of the tobacco supply pipe, its reaction time can be relatively long depending on the length of said pipe, so that a fairly large quantity of tobacco can circulate at high speed in the pipe and s' find it damaged.
  • a first object of the invention is to propose a method and a device making it possible to regulate in a reliable manner and as quickly as possible the speed of circulation of a bulk product, in particular tobacco, in an inlet pipe of a machine.
  • Another object of the invention is to provide a device, simple to execute, which can easily be installed from the outset on a cigarette machine, or which can easily be added later to an existing machine.
  • the cigarette machine 1 of FIG. 1 is of known design; the entry of tobacco into said machine is controlled by a separation device, ie a lock 10, preferably a tangential lock.
  • the inlet pipe 11 brings the tobacco, from a reserve (not shown) where the tobacco is placed in bulk in a storage bin.
  • the tobacco is transported in the pipe 11 by an air flow created by a suction installation, preferably a turbine (not shown), arranged at the end of the outlet pipe 12.
  • the tobacco is separated from the air having been used for its transport by the lock 10, the tobacco falling by gravity inside the cigarette machine 1 while the air having been used for its transport as well as the tobacco dust are sucked by the line 12.
  • the air suction through the outlet pipe 12, respectively the tobacco suction through the inlet pipe 11, are controlled by the air suction control device 2 mainly comprising an all-or-nothing valve 20.
  • the valve 20 can take two positions, open or closed, under the action of the servomotor 21.
  • Three level detector probes, 22, 23 and 24 are arranged in the inner tank 13 of the cigarette machine 1, intended to receive the tobacco buffer reserve from said machine.
  • the signals provided by the three probes 22, 23, 24 are collected by a control unit 25 controlling the servomotor 21.
  • the first probe 22 detects only the low level of the tank 13, this level generally being always reached when the cigarette machine is operating, while the probe 24 detects only overfilling of the tank 13; the utility of these two probes 22 and 24 is less in the regulation problem to be solved by the invention, on the other hand they will be used to control the stopping of the cigarette machine 1 in the event of lack of tobacco in the tank 13 or stopping the tobacco supply in the event of overfilling of the tank 13. It is mainly by the probe 23 that the air suction device 2 is controlled when the machine is in normal operation.
  • the probe 23 detects this drop in level and after a first duration set by a first time delay included in the control unit 25, controls the opening of the valve 20 in order to supply the tank 13 in tobacco.
  • this is again detected by the probe 23 which, after a second duration adjusted by a second time delay included in the control unit 25, then controls the closing of the valve 20 in order to stop the supply in tobacco from the tank 13.
  • the level of tobacco in the tank 13 will therefore oscillate around the position of the probes 23.
  • the valve 20 is a butterfly valve, preferably controlled by a servo-motor 21 of the electro-pneumatic type, the control being able to be just as electro-mechanical, electro-hydraulic or entirely electric.
  • the level detector probes 22,23,24 are preferably electro-optical, each consisting of a light source coming from an optical fiber placed on a side wall of the tank 13 and an optico-electric detector placed opposite of the corresponding light source, on the opposite side wall of the tank 13.
  • the control action of the probes 23 and 24 is delayed by a duration of the order of 3 sec. in order to eliminate the effect of micro-cuts due to the circulation of tobacco strands inside the tank 13.
  • Proximity sensors could also be used as probes.
  • the device 3 for adjusting the tobacco speed according to the invention is composed of an adjustment valve 30, controlled by a servomotor 31 capable of positioning the adjustment valve 30 in any position between the fully closed position and the one completely open.
  • the adjustment valve 30 is also mounted in the outlet pipe 12, preferably downstream of the valve 20.
  • a pressure measurement probe 32 preferably mounted in the outlet pipe of the lock 10 or else in the pipe of output 12 upstream of valve 20, provides its signal to a second control unit 33.
  • the adjustment valve 30 is also preferably of the butterfly type, its control servo-motor 31 also being preferably of electro-mechanical type, the control being able to be just as easily of electro-pneumatic, electro-hydraulic or fully electric type.
  • the pressure measurement probe 32 is preferably a membrane probe.
  • the type regulating the control unit 33 is preferably of the proportional type.
  • the valve 20 When no filling of the tank 13 with tobacco is required, that is to say when the upper level of the tobacco reserve is between the probes 23 and 24, the valve 20 is in the closed position, interrupting this does the suction of air and therefore the flow of air and tobacco in the pipe 11.
  • the control valve 30 is preferably in the open position, although theoretically any position is possible .
  • the control unit 25 controls, after time delay, the opening of the valve 20.
  • the opening of the valve 20 creates a sudden call for air in the part of the outlet pipe 12 which is upstream of it, as well as in the lock 10 and the inlet pipe 11. This sudden call for air causes a depression in the pipes in question, this depression then being measured by the pressure measurement probe 32.
  • the signal supplied by probe 32 then corresponds to that shown in FIG. 2 which shows the shape of the pressure curve, respectively of the depression, as a function of time, the sudden depression appearing at the opening of the valve 20 corresponding to the linear part arranged to the left of the curve.
  • the probe 32 measures a value of the depression between P1 and P0, it then commands the partial closing of the adjustment valve 30, thereby limiting the air flow in the pipe 12, until the depression is established around a setpoint P1. Since the pressure, respectively the vacuum is generally inversely proportional to the speed of the air flow, the air flow transporting the tobacco in the inlet pipe 11 circulates at a speed as shown in Figure 3 which shows the shape of the speed of the tobacco flow in the pipe 11 as a function of time.
  • the pressure measured is not exactly inversely proportional to the speed of the tobacco, since it is sought to circulate the tobacco at a determined speed V1, it will be easy to adjust the control so that the speed V1 is obtained for a determined value of P1.
  • V0 which corresponds to the maximum possible value of circulation of the tobacco in the pipe 11, this value being determined by the flow characteristics of the circuit .
  • P0 the value P0.
  • the maximum value V0 is generally too large for a circulation of tobacco without damaging the strands.
  • the speed of the tobacco stabilizes around a value V1, which is the optimum speed of circulation of the tobacco in the pipe 11 without damaging the strands, this value V1 corresponding at the P1 value of the depression.
  • the speed of tobacco is stabilized around the value V1 at the end of time T0 dependent on the time constant of the regulating unit 33 as well as on the closing speed of the regulating valve 30.
  • the optimum value of the speed V1 is 17 to 18 m / sec, making it possible not to damage the tobacco strands; as indicated above, the value V0 depends mainly on the flow characteristics of the installation as well as on the suction power of the turbine, its value can be greater than 25 m / sec.
  • the P0 and P1 values depend on the characteristics of the installation, they are located on an existing machine around 700 mbar, respectively 500 mbar. In general, the circulation speed V1 is stabilized after a time T0 of the order of a few seconds, between 2 and 3 seconds.
  • valve 30 It would be possible to work with only one valve 30 also fulfilling the function of opening / closing the pipe provided by the valve 20.
  • the valve in question should be of more complex construction than that of the two valves provided, seen that it should ensure perfect sealing and fine adjustment, this in an atmosphere heavily loaded with dust.
  • the control system would also be more complicated considering on the one hand that the valve should be able to open or close very quickly, while its adjustment position should be reached at lower speed and the need on the other hand to have to be able to determine the causes of the pressure variation measured.
  • the speed regulation method and the device corresponding to this method are relatively simple in design, are effective and allow the speed to be adjusted to a set value in a fairly short time. Due to the simplicity of the design of the device not on the live works of the machine, it is easy to perfect an existing cigarette machine by adding such a device to it.

Landscapes

  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
EP92810704A 1992-09-14 1992-09-14 Verfahren und vorrichtung zur Regulierung der Geschwindigkeit eines Produktes in einer Leitung und Zigarettenherstellungsmaschine mit einer solchen Vorrichtung Withdrawn EP0587958A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP92810704A EP0587958A1 (de) 1992-09-14 1992-09-14 Verfahren und vorrichtung zur Regulierung der Geschwindigkeit eines Produktes in einer Leitung und Zigarettenherstellungsmaschine mit einer solchen Vorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92810704A EP0587958A1 (de) 1992-09-14 1992-09-14 Verfahren und vorrichtung zur Regulierung der Geschwindigkeit eines Produktes in einer Leitung und Zigarettenherstellungsmaschine mit einer solchen Vorrichtung

Publications (1)

Publication Number Publication Date
EP0587958A1 true EP0587958A1 (de) 1994-03-23

Family

ID=8211989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810704A Withdrawn EP0587958A1 (de) 1992-09-14 1992-09-14 Verfahren und vorrichtung zur Regulierung der Geschwindigkeit eines Produktes in einer Leitung und Zigarettenherstellungsmaschine mit einer solchen Vorrichtung

Country Status (1)

Country Link
EP (1) EP0587958A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997033490A1 (en) * 1996-03-15 1997-09-18 Brown & Williamson Tobacco Corporation Method and apparatus for automatic and continuous pneumatic feeding of tobacco
EP1745798A2 (de) 1999-10-01 2007-01-24 Intercell AG Hcv vakzine-zusammensetzungen
WO2010051969A1 (de) * 2008-11-07 2010-05-14 Hauni Maschinenbau Ag Vorrichtung und verfahren zur zufuhr von schnitttabak von einer tabakaufgabeeinheit zu einer tabakverarbeitungsmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580644A (en) * 1969-03-04 1971-05-25 Brown & Williamson Tobacco Pneumatic feed system for uniform supply of tobacco to cigarette making machines
GB2139870A (en) * 1983-05-19 1984-11-21 Hauni Werke Koerber & Co Kg Apparatus for supplying particulate material to tobacco processing machines and the like
GB2168885A (en) * 1984-12-22 1986-07-02 Koerber Ag Pneumatic tobacco supply
GB2199483A (en) * 1987-01-02 1988-07-13 Molins Plc Tobacco feed system for cigarette making machine
EP0317504A1 (de) * 1987-11-16 1989-05-24 Fabriques De Tabac Reunies S.A. Anlage zum Zuführen von Tabak zu einer oder mehreren Zigarettenmaschinen
WO1991011120A1 (en) * 1990-01-31 1991-08-08 Skoda, Koncern, Plzen, A.S. Tobacco feed system for cigarette making machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580644A (en) * 1969-03-04 1971-05-25 Brown & Williamson Tobacco Pneumatic feed system for uniform supply of tobacco to cigarette making machines
GB2139870A (en) * 1983-05-19 1984-11-21 Hauni Werke Koerber & Co Kg Apparatus for supplying particulate material to tobacco processing machines and the like
GB2168885A (en) * 1984-12-22 1986-07-02 Koerber Ag Pneumatic tobacco supply
GB2199483A (en) * 1987-01-02 1988-07-13 Molins Plc Tobacco feed system for cigarette making machine
EP0317504A1 (de) * 1987-11-16 1989-05-24 Fabriques De Tabac Reunies S.A. Anlage zum Zuführen von Tabak zu einer oder mehreren Zigarettenmaschinen
WO1991011120A1 (en) * 1990-01-31 1991-08-08 Skoda, Koncern, Plzen, A.S. Tobacco feed system for cigarette making machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997033490A1 (en) * 1996-03-15 1997-09-18 Brown & Williamson Tobacco Corporation Method and apparatus for automatic and continuous pneumatic feeding of tobacco
EP1745798A2 (de) 1999-10-01 2007-01-24 Intercell AG Hcv vakzine-zusammensetzungen
EP2269640A2 (de) 1999-10-01 2011-01-05 Intercell AG Hcv Vakzine-Zusammensetzungen
EP2269643A2 (de) 1999-10-01 2011-01-05 Intercell AG Hcv Vakzine-Zusammensetzungen
EP2269642A2 (de) 1999-10-01 2011-01-05 Intercell AG Hcv Vakzine-Zusammensetzungen
EP2269641A2 (de) 1999-10-01 2011-01-05 Intercell AG Hcv Vakzine-Zusammensetzungen
WO2010051969A1 (de) * 2008-11-07 2010-05-14 Hauni Maschinenbau Ag Vorrichtung und verfahren zur zufuhr von schnitttabak von einer tabakaufgabeeinheit zu einer tabakverarbeitungsmaschine
CN102209475A (zh) * 2008-11-07 2011-10-05 豪尼机械制造股份公司 用于将生切烟丝从烟丝加料单元输送给烟丝加工机的装置和方法

Similar Documents

Publication Publication Date Title
FR2479870A1 (fr) Dispositif et procede pour separer un gaz d'une suspension de fibres
FR2697174A1 (fr) Ensemble de traitement de vieux papiers.
FR2514412A1 (fr) Dispositif de modulation de l'ecoulement des gaz dans un silencieux d'echappement de moteur a combustion interne
EP0133732A2 (de) Schutzvorrichtung für Wasserleitungen
EP0317504B1 (de) Anlage zum Zuführen von Tabak zu einer oder mehreren Zigarettenmaschinen
EP0587958A1 (de) Verfahren und vorrichtung zur Regulierung der Geschwindigkeit eines Produktes in einer Leitung und Zigarettenherstellungsmaschine mit einer solchen Vorrichtung
CH620017A5 (de)
FR2666854A1 (fr) Dispositif de commande de moyens d'antipompage d'un compresseur.
EP0453384B1 (de) Dampferzeuger
FR2491050A1 (fr) Procede de commande de dispositifs de remplissage de machines de remplissage, equipes de soupapes a liquide actionnables electriquement, et montage pour la mise en oeuvre de ce procede
FR2494565A1 (fr) Appareil pour former une laniere de tabac coupe
FR2512927A1 (fr) Appareil pour controler l'ecoulement du charbon a partir d'une soute a charbon a travers un conduit aboutissant a un alimenteur qui delivre le charbon a un broyeur
EP0272185B1 (de) Verfahren zur Regelung des Gasdurchflusses in einem Ventil und Durchflussregler, der dieses Verfahren anwendet
FR2609239A1 (fr) Procede et dispositif pour l'alimentation en tabac d'une machine a faire les cigarettes
EP1567444A1 (de) Verfahren und vorrichtung zum steuern des füllvorgangs einer flüssigkeit in einen behälter
EP0390732B1 (de) Automatische Steuervorrichtung zum Zuführen von Tabakteilchen zu einer Maschine
EP0598641A1 (de) Vorrichtung zum Vereinzeln von gestapelten dünnen Gegenständen
FR2513092A1 (fr) Machine de fabrication de cigarettes a dispositif auxiliaire d'alimentation en tabac
WO1999003518A1 (fr) Procede de determination de perte de liquide lors d'une operation
CA2176394C (fr) Procede de commande d'un dispositif de distribution pour l'alimentation d'une capacite avec un fluide gazeux, moyens pour la mise en oeuvre de ce procede et dispositif equipe de ces moyens
EP0316226A1 (de) Auffüllungsdetektiervorrichtung für einen Münzbehälter
FR2605572A1 (fr) Regulateur de la pression au cylindre de frein pour des freins a air comprime de vehicules
FR2765674A1 (fr) Procede de commande du regime d'extraction d'un extracteur de gaz d'une enceinte d'un appareil cryogenique et appareil pour sa mise en oeuvre
FR2546963A1 (en) Borer feed motor control system
EP1583912B1 (de) Lufteinblasdüse und damit ausgestattete vorrichtung

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

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

RBV Designated contracting states (corrected)

Designated state(s): CH DE LI

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: 19940924