EP2400863B1 - Unité d'amenée d'un flux de particules de tabac dans une machine à fabriquer les cigarettes - Google Patents

Unité d'amenée d'un flux de particules de tabac dans une machine à fabriquer les cigarettes Download PDF

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Publication number
EP2400863B1
EP2400863B1 EP09799411.5A EP09799411A EP2400863B1 EP 2400863 B1 EP2400863 B1 EP 2400863B1 EP 09799411 A EP09799411 A EP 09799411A EP 2400863 B1 EP2400863 B1 EP 2400863B1
Authority
EP
European Patent Office
Prior art keywords
chimney
flow
tobacco particles
ascending
unit
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.)
Not-in-force
Application number
EP09799411.5A
Other languages
German (de)
English (en)
Other versions
EP2400863A1 (fr
Inventor
Fausto Mengoli
Umberto Zanetti
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.)
GD SpA
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GD SpA
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Publication date
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Publication of EP2400863A1 publication Critical patent/EP2400863A1/fr
Application granted granted Critical
Publication of EP2400863B1 publication Critical patent/EP2400863B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present invention relates to a unit for feeding a flow of tobacco particles in a cigarette maker.
  • Cigarette makers typically comprise a hopper containing a mass of shredded tobacco.
  • the tobacco is transferred by a carding unit from the hopper to the top inlet end of a descending duct or chute, then taken up at the bottom end of the duct by pneumatic and/or mechanical transfer means, such as will direct a continuous flow of tobacco particles into an ascending duct or chimney delimited by two vertical side walls disposed substantially parallel one with another.
  • the top end of the ascending chimney is enclosed by an aspirating conveyor belt fashioned from an air-permeable fabric and running in a direction substantially transverse to the direction of the flow of tobacco rising through the chimney.
  • the shredded tobacco particles, entrained in a rising air current generated at the base of the ascending chimney, are forced up through the selfsame chimney and attracted ultimately by the aspirating belt, on which they collect gradually to form a continuous layer or stream.
  • the stream of tobacco is enveloped in a strip of paper material and shaped into a continuous cigarette rod that will be divided up subsequently into single cigarette sticks by rotating cutter means.
  • the top end of the chimney presents a separator element of ogival section placed so as to split the flow of tobacco particles into two parts, which are formed gradually into respective streams on two aspirating conveyor belts.
  • the streams are fashioned into respective continuous cigarette rods and divided up by common cutter means into single cigarette sticks.
  • the flow of tobacco particles is fed through the machine by a unit composed of the descending duct and the ascending chimney, connected one to another by the aforementioned transfer means.
  • the flow of tobacco particles is not always perfectly uniform on entering the ascending chimney, by reason of the non-homogeneous distribution of tobacco particles having dissimilar physical properties (weight and size).
  • the velocity of the air flow in the bottom part of the chimney is sufficient to entrain and guide the flow of tobacco, whereas in the top part, the velocity decreases due to the fact, in particular, that the cross section of the chimney widens when nearing the aspirating belts.
  • the object of the present invention is to provide a unit for feeding a continuous flow of tobacco particles, such as will be unaffected by the drawbacks described above.
  • numeral 1 denotes a machine, in its entirety, consisting in a twin track cigarette maker.
  • the machine 1 comprises a first portion 2 functioning as a feed unit, by which a mass of shredded tobacco held in a storage hopper 3 is drawn off and conveyed as a continuous flow 4 of tobacco particles, and a second portion or unit 5 of conventional embodiment by which the flow 4 of tobacco particles is formed into two continuous streams 6 and 7.
  • the machine 1 also comprises a garniture unit, schematized as a block denoted 8, by which the two streams 6 and 7 of tobacco are fashioned into two continuous cigarette rods 9.
  • the continuous rods 9 are divided up by rotating cutter means, schematized as a block denoted 10, into single cigarette sticks 11.
  • the feed unit 2 conveying the continuous flow 4 of tobacco particles comprises a descending duct or chute 12, of which the top end is connected to the hopper 3 by way of a carding unit 13 equipped with a carding roller 14 rotatable about a horizontal axis 14a normal to the viewing plane of figure 1 .
  • the feed unit 2 further comprises an ascending duct or chimney 15 aligned on a substantially vertical longitudinal axis denoted 15a, of which the bottom inlet end 16 is connected with the outlet end 17 of the descending duct 12 by way of transfer means 18 that consist in a transfer unit 19 conveying the flow 4 of tobacco particles.
  • the axis of the descending duct, denoted 12a, is inclined from the vertical in such a way as to create an acute angle of predetermined width with the axis 15a of the ascending chimney 15, which is substantially vertical.
  • the transfer unit 19 consists in a pair of spiked rollers denoted 20 and 21 disposed with axes parallel to the axis 14a of the carding roller 14, revolving substantially tangential one to another and turning anticlockwise as viewed in figure 1 .
  • the one roller 20 functions as a conveyor, by which tobacco dropping from the carding unit 13 is taken up at the outlet end 17 of the descending duct 12, whilst the other roller 21 functions as an impeller by which the tobacco is projected upwards directly into the ascending chimney 15.
  • the ascending duct 15 is delimited by two side walls 22 and 23, and enclosed at a top outlet end by a pair of mutually parallel aspirating conveyor belts 24 and 25 on which the aforementioned streams 6 and 7 of tobacco are gathered and conveyed.
  • the two aspirating conveyor belts 24 and 25, which form part of the second unit 5, are set in motion in a direction perpendicular to the viewing plane of figure 1 , hence also to the axis 15a of the chimney 15, and fashioned preferably from an air-permeable textile material.
  • the unit 5 further comprises a separator element 26 of conventional type, interposed between the belts 24 and 25 and directed toward the inside of the ascending chimney 15, presenting an ogival profile and consisting in a bar of which the axis extends parallel to the two belts 24 and 25.
  • the side walls 22 and 23 rise from the base toward the top convergently, through a distance covering a first lower portion 27 of the chimney 15, and thereafter divergently through a distance covering a second upper portion 28, in such a way as to create a restriction 29 coinciding with an intermediate portion.
  • the machine 1 further comprises pneumatic means 30 located at the inlet 16 of the chimney 15, by which a flow of air is directed upward and toward the belts 24 and 25.
  • pneumatic blending means 31 associated with the lower portion of the chimney 15, consisting in ducts 32 connected to a source 33 of compressed air and communicating with the inside of the chimney 15 by way of openings 34 in the walls 22 and 23, in such a way as to invest the flow 4 of tobacco particles in a direction substantially transverse to the axis 15a of the chimney.
  • the machine also comprises pneumatic accelerator means 35 connected to a part of the chimney coinciding with or immediately beyond the restriction 29 (relative to the feed direction of the flow 4), consisting in ducts 36 connected also to the source of compressed air 33 and communicating with the inside of the chimney 15 via a plurality of holes 37 with inclined axes passing through the side walls 22 and 23.
  • the flow of air generated by the pneumatic accelerator means 35 will present a component oriented toward the aspirating belts 24 and 25, in such a way as to combine with the restriction 29 in counteracting the deceleration of the flow 4 of tobacco particles caused by the gradual widening in section of the chimney 15.
  • this enables the flow 4 of tobacco particles rising through the chimney 15 to retain its homogeneous composition, that is to say presenting a uniform distribution of particles having different physical properties, through to the formation of the two streams 6 and 7 on the aspirating belts 24 and 25.
  • Numeral 38 denotes openings located in both side walls 22 and 23 of the chimney 15, near to the top end, connecting with ducts 39 through which the air entraining the flow 4 of tobacco particles is ultimately released.
  • the unit 40 for feeding a flow 4 of tobacco particles illustrated in figure 5 differs from the unit 2 described previously inasmuch as the descending duct 12 is substantially vertical and the transfer means 18 consist in a transfer unit 41, similar to the unit 19 described previously, positioned at the outlet end 17 of the duct 12, plus a looped belt conveyor 42 presenting a top branch 43 suspended between two pulleys 44 and connecting the transfer unit 41 with the inlet end 16 of the ascending chimney 15.
  • the transfer unit 41 comprises two spiked rollers operating in combination one with another, by which the tobacco is transferred from the duct 12 to the top branch 43 of the belt conveyor 42, whereupon the flow 4 of tobacco particles is transported by the selfsame conveyor toward the inlet end 16 of the ascending chimney 15.
  • the unit 47 for feeding a flow 4 of tobacco particles as illustrated in figure 6 differs from the unit 2 of figure 1 in that the descending duct 12 is connected to the inlet end 16 of the ascending chimney 15 by way of an arcuate wall 48 functioning as a guide for the flow 4 of tobacco particles.
  • the transfer means 18 are provided by the arcuate guide wall 48, operating in conjunction with pneumatic means 49 that consist in a source of compressed air 50 producing a current directed through openings 51 located in the arcuate wall 48, by which the flow of tobacco particles is conveyed along the selfsame wall.
  • a twin track cigarette maker rather than being equipped with a single ascending chimney 15 presenting a separator element 26 at the top end, might be equipped with two ascending chimneys substantially parallel one with another and feeding tobacco to respective aspirating conveyor belts individually.
  • arcuate wall 48 will be divided into two branches, each feeding the flow 4 of tobacco particles to a respective chimney.

Landscapes

  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)

Claims (6)

  1. Unité d'amenée d'un flux de particules de tabac dans une machine à fabriquer des cigarettes, comprenant au moins une cheminée montante (15) enfermée en dessus par au moins une bande transporteuse d'aspiration (25) sur laquelle le flux (4) de particules de tabac se forme dans un courant (6), une conduite descendante (12) le long de laquelle les particules de tabac sont amassées et acheminées, et des moyens de transfert (18) interposés entre la conduite descendante (12) et la cheminée montante (15), la cheminée montante (15) étant délimitée latéralement par deux cloisons latérales (22, 23) créant une limitation (29) à une position intermédiaire, ladite cheminée étant divisée par la limitation (29) en une partie inférieure (27) et une partie supérieure (28), caractérisée en ce que l'unité d'amenée (2) comprend des moyens pneumatiques de mélange (31) associés à la partie inférieure (27) de la cheminée montante (15) et agissant sur le flux (4) de particules de tabac ; lesdits moyens de transfert (18) comprennent une unité de transfert (19) équipée de rouleaux, par lesquels la conduite descendante (12) est reliée directement à la cheminée montante (15) ; ladite unité de transfert (19) comprenant un rouleau de transporteur (20) par lequel le tabac est enlevé de la conduite descendante (12) et un rouleau impulseur (21) agissant conjointement avec le rouleau de transporteur (20), par lequel le flux (4) de particules de tabac est directement projeté le long de la cheminée montante (15).
  2. Unité d'amenée selon la revendication 1, caractérisée en ce que lesdits moyens pneumatiques de mélange (31) sont associés à la partie inférieure de la cheminée (15) et consistent en des conduits (32) reliés à une source (33) d'air comprimé et communiquant avec l'intérieur de la cheminée (15) au moyen d'ouvertures (34) dans les cloisons latérales (22, 23) de manière à placer le flux (4) de particules de tabac dans une direction essentiellement transversale à l'axe (15a) de la cheminée.
  3. Unité d'amenée selon les revendications 1 ou 2, comprenant des moyens pneumatiques d'accélération (35) associés à la partie supérieure (28) de la cheminée montante (15), positionnés à proximité de la limitation (29) ou coïncidant avec cette dernière et agissant sur le flux de particules de tabac.
  4. Unité d'amenée selon les revendications 2 et 3, caractérisée en ce que lesdits moyens pneumatiques d'accélération (35) sont reliés à une partie de la cheminée (15) coïncidant avec la limitation (29) ou étant située immédiatement au-delà de cette dernière ; lesdits moyens pneumatiques d'accélération (35) consistant en des tuyaux (36) reliés à la source d'air comprimé (33) et communiquant avec l'intérieur de la cheminée (15) par le biais d'une pluralité d'orifices (37) disposant d'axes inclinés passant à travers les cloisons latérales (22, 23) ; le flux d'air généré par lesdits moyens pneumatiques d'accélération (35) présentant un composant orienté vers ladite bande d'aspiration (25), de manière à se combiner avec la limitation (29) pour contrer la décélération du flux (4) de particules de tabac causée par l'élargissement graduel en coupe de la cheminée (15).
  5. Unité d'amenée selon l'une quelconque des revendications précédentes, dans laquelle la machine à fabriquer des cigarettes (1) est une machine à piste simple.
  6. Unité d'amenée selon l'une quelconque des revendications précédentes, dans laquelle la machine à fabriquer des cigarettes (1) est une machine à piste double.
EP09799411.5A 2009-02-26 2009-12-17 Unité d'amenée d'un flux de particules de tabac dans une machine à fabriquer les cigarettes Not-in-force EP2400863B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO2009A000110A IT1398602B1 (it) 2009-02-26 2009-02-26 Unità di alimentazione di un flusso di particelle di tabacco in una macchina confezionatrice di sigarette.
PCT/IB2009/055808 WO2010097661A1 (fr) 2009-02-26 2009-12-17 Unité d'amenée d'un flux de particules de tabac dans une machine à fabriquer les cigarettes

Publications (2)

Publication Number Publication Date
EP2400863A1 EP2400863A1 (fr) 2012-01-04
EP2400863B1 true EP2400863B1 (fr) 2014-04-30

Family

ID=41228320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09799411.5A Not-in-force EP2400863B1 (fr) 2009-02-26 2009-12-17 Unité d'amenée d'un flux de particules de tabac dans une machine à fabriquer les cigarettes

Country Status (5)

Country Link
EP (1) EP2400863B1 (fr)
JP (1) JP5580343B2 (fr)
CN (1) CN102333460B (fr)
IT (1) IT1398602B1 (fr)
WO (1) WO2010097661A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3189474B1 (fr) * 2014-09-01 2022-11-02 ABB Schweiz AG Système d'imagerie pour dispositif de distribution de pièces, dispositif de distribution de pièces et système de dispositif de distribution de pièces pour robot

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB941414A (en) * 1960-06-21 1963-11-13 Molins Machine Co Ltd Improvements in or relating to tobacco-manipulating machines
GB1127315A (en) * 1964-12-31 1968-09-18 Desmond Walter Molins Improvements relating to a continuous rod cigar-making machine
DE2623547A1 (de) * 1976-05-26 1977-12-08 Hauni Werke Koerber & Co Kg Vorrichtung zum bilden eines tabakstranges
IT1162318B (it) * 1979-05-22 1987-03-25 Gd Spa Procedimento e relativa macchina confezionatrice per la realizzazione contenporanea di due bachi continui di sigaretta
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
IT1167018B (it) * 1982-12-02 1987-05-06 Hauni Werke Koerber & Co Kg Dispositivo per formare un filone di tabacco
JPS61224977A (ja) * 1985-03-28 1986-10-06 日本たばこ産業株式会社 多層巻たばこの形成装置
DE10251210A1 (de) * 2002-10-31 2004-05-19 Focke Gmbh & Co. Kg Vorrichtung zum Aufbereiten von Tabak bei der Herstellung von Zigaretten
ITBO20030125A1 (it) * 2003-03-07 2004-09-08 Gd Spa Metodo ed unita` per la realizzazione contemporanea
DE102005019390A1 (de) * 2005-04-25 2006-10-26 Hauni Maschinenbau Ag Strangbildungseinrichtung mit Luftströmungsbarriere
JP4822462B2 (ja) * 2006-02-14 2011-11-24 日本たばこ産業株式会社 シガレット製造機の刻たばこ原料供給装置
DE102006009148B9 (de) * 2006-02-24 2010-12-02 Hauni Maschinenbau Ag Strömungskörper einer Zigarettenstrangmaschine
ITBO20060387A1 (it) * 2006-05-22 2006-08-21 Gd Spa Macchina confezionatrice per la realizzazione contemporanea di due bachi continui di sigaretta.

Also Published As

Publication number Publication date
ITBO20090110A1 (it) 2010-08-27
JP2012518426A (ja) 2012-08-16
EP2400863A1 (fr) 2012-01-04
WO2010097661A1 (fr) 2010-09-02
CN102333460B (zh) 2015-04-08
JP5580343B2 (ja) 2014-08-27
IT1398602B1 (it) 2013-03-08
CN102333460A (zh) 2012-01-25

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