EP0390732B1 - Automatische Steuervorrichtung zum Zuführen von Tabakteilchen zu einer Maschine - Google Patents

Automatische Steuervorrichtung zum Zuführen von Tabakteilchen zu einer Maschine Download PDF

Info

Publication number
EP0390732B1
EP0390732B1 EP90810178A EP90810178A EP0390732B1 EP 0390732 B1 EP0390732 B1 EP 0390732B1 EP 90810178 A EP90810178 A EP 90810178A EP 90810178 A EP90810178 A EP 90810178A EP 0390732 B1 EP0390732 B1 EP 0390732B1
Authority
EP
European Patent Office
Prior art keywords
tobacco
segment
intake
opening
sleeve
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
EP90810178A
Other languages
English (en)
French (fr)
Other versions
EP0390732A1 (de
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 EP0390732A1 publication Critical patent/EP0390732A1/de
Application granted granted Critical
Publication of EP0390732B1 publication Critical patent/EP0390732B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • Y10S131/909—Sensing condition in feed hopper for cigar or cigarette making

Definitions

  • Controlling the feeding of machines which process tobacco particles is an operation which we seek to automate to the greatest possible extent, but which must be capable of reacting to unforeseen or abnormal phenomena which it is often difficult to translate into measurable parameters.
  • Locks are devices in which the flow of tobacco particles carried by the flow of aspirated air is separated from the air.
  • the tobacco particles fall by gravity or under the effect of a centrifugal force under conditions such that they separate from the air flow and are collected in a hopper, from where they feed the machine.
  • the flow rate of the tobacco flow can be adjusted by means which are arranged at the entrance to each of the conduits, above the tobacco bed.
  • Patent application CH-4450/87 describes a simple device to achieve this goal.
  • the prior document GB-2 139 870 also describes a device for feeding a tobacco particle processing machine.
  • a sliding tubular segment is provided at the entrance to the duct which conveys the tobacco flow.
  • the tubular segment is moved by a control device between a position where the tobacco is sucked from the bed and a position in which it is not sucked.
  • the flow is also adjusted by shutters located in the air intake duct, beyond the separator, and in the machine inlet duct.
  • Another arrangement known from US Pat. No. 3,544,167 also comprises, at the entrance to each duct guiding the flow of tobacco, a mobile tubular segment, controlled as a function of the desired flow rate.
  • this tubular segment is controlled all-or-nothing, so that it does not make it possible to control a flow whose flow rate varies at will.
  • the present invention provides a very simple device capable of responding to a programmed command and this automatically. Not only does this device avoid, by its simplicity, the difficulties and drawbacks of the devices known up to now, but in addition it provides several functions which until now required the presence of separate means.
  • the object of the present invention is a device for controlling the flow rate of a flow of tobacco particles intended for feeding a machine, comprising a duct with a rigid and fixed wall, with, at a end, an inlet opening located opposite a tobacco bed, and suction means for circulating in the duct a flow of air capable of conveying the flow of tobacco particles from the inlet opening towards the machine, characterized in that the duct comprises an inlet segment with, at one of its ends, the said inlet opening and, at the other end a branch provided with a discharge opening and a shutter of this opening, and in that the shutter is controlled as a function of the values of one or more parameters represented by time and / or pressure in the input segment.
  • the tobacco particles come from a reservoir (not shown) and flow along a path represented schematically by 3, so as to arrive on a flat support 4, on which is placed a bed 5 animated by a vibratory movement whose amplitude and frequency can, if necessary, be modified at will.
  • bed 5 which is permanently covered with a layer of loose tobacco particles, open three rigid ducts with fixed walls, designated by 6, which lead to each of the locks 2.
  • each from these locks leave pipes 7 which meet in a suction duct 8 leading to the suction inlet of a blower 16.
  • each of the rigid conduits 6 has an initial vertical part which extends above the bed 5. This part is diagrammatically shown on a larger scale in FIG. 2.
  • This figure shows the lower part of a conduit 6 which has an inlet segment designated by 9.
  • This inlet segment extends from an inlet opening 10, provided with a flange 11 and arranged above the bed 5 upwards to a branch 12 from which a short discharge segment 13 leaves with a discharge opening 14 and a shutter 15 shown in a completely schematic manner in FIG. . 2.
  • This shutter can be controlled by a motor or by a cylinder. Normally, it is either in the open position or in the closed position. It is understood, however, that in certain variants of the device described, provision could be made for progressive control of this shutter.
  • the inlet opening 10 and the inlet segment 9 of the conduit 6 are also equipped with a sliding sleeve 23.
  • This sleeve comprises a tube segment 17 open at its two ends, the diameter of which is slightly less than that of the leads 6 to its base. It is carried by a tubular mount 22, rigidly fixed on it and provided with two diametrically opposite longitudinal slots 18. In these slots are engaged rods 19 integral with the wall of the conduit 6, a little above the opening of entry 10.
  • the sliding sleeve 23 rests under the effect of its weight on the rods 19 whose upper generatrix forms an upper stop on which the upper end of the slots 18 rests.
  • the sleeve 23 comprises in addition, at its base, a flange 20.
  • FIG. 6 shows how the automatic control device is designed from the point of view of electrical connections.
  • a motor M for controlling the shutter 15 a time sensor T, a pressure sensor P which is the sensor 21 of FIG. 2 as well as a motor S which represents the drive motor of the blower 16 sucking air through the duct 8.
  • the diagram of the device shown in fig. 6 in a completely simplified manner, comprises a memory Me and a processor Pr, the whole being arranged so as to allow the operation of the input units and the output units described according to a predetermined program, this program ensuring an optimization of the tobacco machine supply.
  • Figs. 3 to 5 illustrate the conditions that the program must meet.
  • Fig. 4 shows a typical curve giving the flow of tobacco Q which it is necessary to supply to the machines during a certain period of time. As can be seen, the flow rate can be quite highly variable.
  • Fig. 5 shows how, in a program case, the required bit rate will be obtained as a function of time.
  • the blower or the general compressor 16 which ensures the air flow in the conduits 6 will be kept in operation permanently at a stable speed and the supply of the various machines 1 will be ensured simply by operating the shutters 15 by means of the motors M.
  • Q1 a stable value
  • This value Q1 depends on the geometry of the installation and on the power of the blower 16. On the contrary, if the shutter 15 is open, the air is sucked in by the segment 13 and the discharge opening 14.
  • the pressure in segment 9 rises to a value very close to ambient pressure and the particles are no longer aspirated. It is therefore sufficient to program the successive supply and interruption times of the flow rate by operating the shutter 15. According to FIG. 5, the closure of the shutter occurs at time intervals t which are fixed and its opening, after periods which depend on the required flow rate.
  • the same device can be programmed to play a role and prevent blockage of entry openings. Installations of the kind shown in fig. 1 in fact present, to a greater or lesser degree, the risk that a plug of tobacco particles will form at the inlet opening of the conduit 6, which interrupts the feeding. If such a plug forms at the lower opening of the sleeve 23, the vacuum inside the inlet segment 9, measured by the pressure sensor P increases, as can be seen in the graph in FIG. 3 which represents the curve giving the ordinate the value of the depression and the time abscissa, this same graph also giving the volumetric flow rate of tobacco V, represented on the ordinate with the time on the abscissa.
  • the vacuum increases and the volumetric flow decreases.
  • This phenomenon is detected by the sensor P if it reaches a certain magnitude, that is to say if the depression increases up to a value ⁇ PC representing the critical depression but before, that is to say during the phase increase in depression, the entire sleeve 23 is sucked up, so that the lower stop represented by the lower end of the slots 18 abuts against the rods 19.
  • this shock has the effect of releasing the plug which has formed, so that the vacuum ⁇ P returns to its normal value without having reached the critical value ⁇ PC.
  • the plug is such that it does not disintegrate spontaneously when the sleeve 23 abuts, by its lower stop, against the stop rods 19. Then the detection of the critical vacuum ⁇ PC causes the opening immediate shutter 15. Under these conditions, the vacuum drops to an almost zero value and the sleeve 23 falls back into its lower position as shown in fig. 2. The upper end of the slots 18 then abuts on the rods 19 and this stop shock of the sleeve 23 undoubtedly disintegrates the plug which has formed.
  • the program of the control device can therefore ensure that at the end of a time ⁇ T of for example 2 to 3 seconds, after the opening of the shutter 15, this shutter is closed. Normal flow operation will therefore resume immediately.
  • the feeding device presents less risks for the deterioration of the tobacco particles, therefore a reduced dust production and the energy expended in operating the blowers is also reduced, while the efficiency of use tobacco is increasing.

Landscapes

  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Claims (7)

  1. Vorrichtung zum Steuern einer Flussmenge von Tabakteilchen, die zum Zuführen an eine Maschine (1) bestimmt sind, bestehend aus einer Leitung (6) mit einer steifen und festen Wand sowie mit Saugmitteln (16), um in der Leitung einen Luftfluss zu erzeugen, der befähigt ist, den Tabakfluss von einem Eingangssegment (9) der Leitung zur Maschine (1) zu transportieren, wobei ein Endbereich des Eingangssegmentes (9) eine Eingangsöffnung (10) bezüglich einer Tabakbettung (5) umfasst, dadurch gekennzeichnet, dass der andere Endbereich des Eingangssegmentes (9) mit einer seitlichen Abzweigung eines Entlastungssegmentes (13) versehen ist, welches zu einer Entlastungsöffnung (14) mündet, wobei die Offen- oder Zustellung der Entlastungsöffnung (14) durch einen im Entlastungssegment (13) angeordneten Verschluss (15) hervorgerufen wird, welcher Verschluss in Funktion der Grössen von einem oder mehreren Parametern, die die Zeit und/oder den Druck im Eingangssegment repräsentieren, steuerbar ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Eingangssegment (9) vertikal angeordnet ist, wobei die Eingangsöffnung oberhalb der Tabakbettung (5) gelegen ist.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Eingangssegment (9) der Leitung (6) mit einem Entstopfungsmittel (23) ausgerüstet ist, welches in Funktion der Grösse des Druckes im Eingangssegment (9) betätigbar ist.
  4. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass das Entstopfungsmittel (23) eine steife Muffe (17) umfasst, welche an ihren beiden Endbereichen offen ist, und welche im Innern des Eingangssegmentes (9) zwischen zwei festgelegten Stellungen, einer oberen und einer unteren Stellung, verschiebbar montiert ist.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die genannten Stellungen jeweils durch einen oberen Anschlag (18,19) und durch einen unteren Anschlag (18,19) bestimmt sind, und dass durch das Gewicht der Muffe (17) veranlasst wird, dass beim Verschluss ihrer Basis durch einen Tabakpfropfen sich die Grösse des Druckes im Eingangssegment derart vermindert, dass bei einem bestimmten Wert ein rasches Hochgleiten der Muffe und ein brüsker Stop der letzteren durch den oberen Anschlag erfolgt.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass ein Steuermittel (Pr) für den Verschluss (15) eine Grösse (P) umfasst, welche Grösse eine sofortige Oeffnung des Verschlusses (15) nach einer vorbestimmten Verzögerungszeit für den Fall verursacht, wenn sich der Druck im Eingangssegment (9) nach einer Anhebung der Muffe (17) nicht normalisiert, wobei die genannte vorbestimmte Zeit grösser ist als die Zeit zum Anheben der Muffe unter der Wirkung des genannten Druckabfalles.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Steuermittel (Pr) derart programmiert sind, dass sie ein Wiederschliessen des Verschlusses (15) nach einer zweiten vorbestimmten Verzögerungszeit bewirken, wobei die zweite Verzögerungszeit grösser ist als die Zeit, die die Muffe (17) benötigt, um nach einer Oeffnung des Verschlusses (15) in die untere Stellung zurückzufallen.
EP90810178A 1989-03-22 1990-03-08 Automatische Steuervorrichtung zum Zuführen von Tabakteilchen zu einer Maschine Expired - Lifetime EP0390732B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH106889 1989-03-22
CH1068/89 1989-03-22

Publications (2)

Publication Number Publication Date
EP0390732A1 EP0390732A1 (de) 1990-10-03
EP0390732B1 true EP0390732B1 (de) 1994-08-10

Family

ID=4201695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810178A Expired - Lifetime EP0390732B1 (de) 1989-03-22 1990-03-08 Automatische Steuervorrichtung zum Zuführen von Tabakteilchen zu einer Maschine

Country Status (3)

Country Link
US (1) US5000197A (de)
EP (1) EP0390732B1 (de)
DE (1) DE69011374T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108636949A (zh) * 2018-04-10 2018-10-12 红云红河烟草(集团)有限责任公司 一种风力送料系统堵管检测自动疏通方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5322074A (en) * 1992-07-01 1994-06-21 The Cardwell Machine Company Tobacco delivery system
DE19533412C2 (de) * 1995-09-09 2003-08-07 Bat Cigarettenfab Gmbh Absauganlage zur Entnahme von in einem Vorratsbehälter befindlichem Schnitttabak
DE10238946A1 (de) * 2002-08-24 2004-03-04 Mann + Hummel Protec Gmbh Fördervorrichtung für schüttfähiges Gut
CN104816948B (zh) * 2015-04-30 2017-10-24 华北电力大学 一种用于气力输送粉体参数测量的光学探头防污装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB773835A (en) * 1954-06-04 1957-05-01 Kurt Koerber Method and device for facilitating control of the feed of tobacco to cigarette-making machines
IT1133550B (it) * 1980-11-21 1986-07-09 Cir Spa Divisione Sasib Dispositivo per impedire intasamenti nel condotto di trasferimento pneumatico del trinciato dal distributore alla linea di formazione del cordone di tabacco nelle confezionatrici di sigarette
GB2139870B (en) * 1983-05-19 1987-05-13 Hauni Werke Koerber & Co Kg Apparatus for supplying particulate material to tobacco processing machines and the like
DE3642085A1 (de) * 1986-05-27 1987-12-03 Engelbrecht & Lemmerbrock Pneumatischer foerderer fuer landwirtschaftliche langgueter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108636949A (zh) * 2018-04-10 2018-10-12 红云红河烟草(集团)有限责任公司 一种风力送料系统堵管检测自动疏通方法

Also Published As

Publication number Publication date
US5000197A (en) 1991-03-19
EP0390732A1 (de) 1990-10-03
DE69011374D1 (de) 1994-09-15
DE69011374T2 (de) 1995-03-23

Similar Documents

Publication Publication Date Title
FR2693130A1 (fr) Ensemble de traitement de vieux papiers.
FR2924364A1 (fr) Dispositif separateur a cyclone, en particulier pour la separation gaz-huile
FR2876265A1 (fr) Dispositif de collecte de poussiere a cyclones multiples et aspirateur utilisant un tel dispositif
FR2474353A1 (fr) Dispositif destine a separer les grains lourds des grains legers et de la poussiere d'une matiere en vrac
FR2847450A1 (fr) Appareil collecteur de poussiere a cyclone pour aspirateur
EP0317504B1 (de) Anlage zum Zuführen von Tabak zu einer oder mehreren Zigarettenmaschinen
WO1999059458A1 (fr) Aspirateur a separation tangentielle des dechets
FR2546143A1 (fr) Transporteur pneumatique pour cereales
WO2010086528A1 (fr) Dispositif de séparation granulométrique sélective de matières pulvérulentes solides, à action centrifuge, et procédé d'utilisation d'un tel dispositif
FR2672683A1 (fr) Appareil de controle de matieres en poudre.
FR2622179A1 (fr) Separateur intervenant dans les installations de transport a distance d'objets par flux d'air
EP0390732A1 (de) Automatische Steuervorrichtung zum Zuführen von Tabakteilchen zu einer Maschine
FR2460701A1 (fr) Dispositif de separation de matieres solides dans un courant de liquide
FR2494565A1 (fr) Appareil pour former une laniere de tabac coupe
FR2690362A1 (fr) Sasseur et procédé de sassage d'une matière en suspension dans l'air.
EP0501910B1 (de) Tangentialer Abscheider
EP1583481B1 (de) Verfahren und vorrichtung für den umgang mit schwergas
EP0278793A1 (de) Verfahren und Vorrichtung zum Vermeiden von Kolmatierung der Zykloninnenwände und diese Vorrichtung enthaltender Zyklon
WO2009141518A2 (fr) Dispositif pour detecter les fuites et couper l'arrivee d'eau dans le reservoir de chasse des toilettes
EP2266768B1 (de) Plattenschleiffer zur Herstellung von kalibrierten Holzplatten oder Partikeln
FR2942815A1 (fr) Chasse d'eau a ouverture retardee
FR2647881A1 (fr) Dispositif de ventilation mixte pour une habitation
EP1396668B1 (de) Automatische Absperrvorrichtung eines Durchflusskanals
CA1186268A (fr) Appareil a tete unique ou multiple destine a l'extraction de produits meubles, pateux, granuleux ou pulverulents humides ou non
FR3088386A1 (fr) Dispositif de filtration pour un groupe moto-compresseur

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): BE CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19901026

17Q First examination report despatched

Effective date: 19920305

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE FR GB IT LI NL

REF Corresponds to:

Ref document number: 69011374

Country of ref document: DE

Date of ref document: 19940915

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19941010

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020211

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20020214

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020220

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020221

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20020225

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20020308

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030308

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

BERE Be: lapsed

Owner name: S.A. FABRIQUES DE *TABAC REUNIES

Effective date: 20030331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031001

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030308

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031127

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20031001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050308