EP0743020A1 - Verfahren und Einheit zur Bildung einem fortlaufenden Zigarettenstrang in einer Zigarettenherstellungsmaschine - Google Patents

Verfahren und Einheit zur Bildung einem fortlaufenden Zigarettenstrang in einer Zigarettenherstellungsmaschine Download PDF

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Publication number
EP0743020A1
EP0743020A1 EP96830285A EP96830285A EP0743020A1 EP 0743020 A1 EP0743020 A1 EP 0743020A1 EP 96830285 A EP96830285 A EP 96830285A EP 96830285 A EP96830285 A EP 96830285A EP 0743020 A1 EP0743020 A1 EP 0743020A1
Authority
EP
European Patent Office
Prior art keywords
filler
station
continuous
unit
cigarette rod
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Withdrawn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
EP96830285A
Other languages
English (en)
French (fr)
Inventor
Fiorenzo Draghetti
Fausto Mengoli
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
Original Assignee
GD SpA
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 GD SpA filed Critical GD SpA
Publication of EP0743020A1 publication Critical patent/EP0743020A1/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Withdrawn legal-status Critical Current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
    • A24C5/1814—Forming the rod containing parts of different densities, e.g. dense ends

Definitions

  • the present invention relates to a method of forming a continuous cigarette rod in a cigarette manufacturing machine.
  • a typical continuous rod type cigarette manufacturing machine generally comprises a substantially vertical pipe, of which the bottom end takes in a continuous stream of loose tobacco particles, and an aspirating conveyor belt positioned at the top end of the pipe, on which a continuous tobacco filler is formed.
  • the aspirating belt establishes a predetermined path along which the continuous tobacco filler is directed toward a continuous cigarette rod forming station; at the entry point of this same station, the filler is transferred to a looped conveyor slidably supporting a web of cigarette paper.
  • the web of paper is forced by the looped conveyor to wrap around the tobacco filler and thus bring about the formation of a continuous cylinder or cigarette rod which is then divided into discrete cigarettes by a cutter device with a rotating blade.
  • the tobacco filler generally passes through a gauging station and is subjected to the action of a relative gauging device such as will trim the material down to two different thicknesses alternating regularly one with another.
  • the portions of greater thickness produce sections in which the tobacco of the continuous cigarette rod is more densely compacted.
  • the cutter device is timed with the gauging device in such a way that the rotating blade will always engage the rod at an intermediate point along a more densely compacted section.
  • the object of the present invention is to provide a method for the formation of a cigarette rod, in which there is no hint of the drawback described above.
  • a method for the formation of a continuous cigarette rod in a cigarette manufacturing machine comprising the step of feeding a continuous filler of tobacco particles toward the entry point of a continuous cigarette rod forming station in a given direction and along a predetermined path that extends through a gauging station where the filler is trimmed down into portions of different thickness alternated at regular intervals one with another, characterized in that it comprises the further step of compacting the filler, at least along the portions of greater thickness, effected at a compacting station located following the gauging station and preceding the entry point of the continuous cigarette rod forming station in the feed direction.
  • the compacting step is implemented preferably by compressing the filler.
  • a unit for the formation of a continuous cigarette rod in a cigarette manufacturing machine comprising a conveyor by which a continuous filler of tobacco particles is fed toward the entry point of a continuous cigarette rod forming station, moving in a given direction and along a predetermined path that extends through a gauging station, also a gauging device positioned at the gauging station, by which the filler is trimmed down into portions of different thickness alternated at regular intervals one with another, characterized in that it comprises means by which to compact the tobacco filler, at least along the portions of greater thickness, positioned at a relative compacting station located following the gauging station and preceding the entry point of the continuous cigarette rod forming station in the feed direction.
  • the compacting means preferably will comprise means of compressing the filler.
  • the unit 1 comprises an aspirating conveyor belt 3 looped around end rollers 4 (of which one only appears in fig 1), rotatable about respective horizontal and mutually parallel axes 5 in a clockwise direction as viewed in the drawing.
  • the looped belt 3 encompasses a chamber 6 connected by way of a duct 7 with a source of negative pressure (not illustrated) and delimited at the bottom by a wall 8 affording suction holes 9.
  • the bottom branch 10 of the belt 3 is disposed in sliding contact with the wall 8 and able by means of suction to retain particles 11 of tobacco issuing from a vertical pipe (not illustrated) located beneath the branch 10, in such a manner as to form a continuous tobacco filler 12.
  • the filler 12 is directed continuously by the branch 10 of the belt in a substantially horizontal direction 13, transversely to the axes 5 of the rollers, along a predetermined path 14 that extends through a station 15 where the continuous rod 2 is formed; coinciding with the entry point 15a of this same station is a looped conveyor 16 of which one portion, denoted 17, extends beneath the belt 3 at a point of convergence with the aspirating branch 10.
  • the conveyor 16 comprises end rollers 18 of which one (the only one illustrated in fig 1) is disposed substantially beneath the roller 4 of the aspirating belt and rotatable anticlockwise, as viewed in the drawing, about an axis 19 parallel to the axis 5 of the roller 4 above.
  • the top branch 20 of the conveyor 16 advances slidably on a bed 21, slidably supporting a web 22 of cigarette paper decoiled from a roll 23 and positioned in such a way that the tobacco filler 12 can be transferred from the belt 3 and fed along a set path 24 to a device 24 by which the web 22 is wrapped around the filler 12 to form the continuous rod 2.
  • the path 24 extends below a fixed guide element 26 positioned at the entry point 15a of the forming station 15.
  • the unit 1 also comprises a gauging device 27 of conventional embodiment, operating at a gauging station 28 located along the aforementioned feed path 14, by which the particles of the filler 12 are trimmed using a familiar technique in such a way as to generate standard portions of a given height and thickness, denoted 29, alternated at regular intervals with shorter portions of greater thickness denoted 30.
  • the unit 1 further comprises a compacting station 31 located along the feed path 14 between the gauging station 28 and the entry point 15a of the forming station, at which the tobacco filler 12 is subjected to a firming action; the station 31 is equipped with compacting means 32 comprising a pressure roller 32a, keyed to a shaft 33 rotatable about an axis 34 disposed parallel with the axis 5 of the roller 4 of the aspirating belt 3, and designed to compress the filler 12 against the bottom branch 10 of the belt.
  • compacting means 32 comprising a pressure roller 32a, keyed to a shaft 33 rotatable about an axis 34 disposed parallel with the axis 5 of the roller 4 of the aspirating belt 3, and designed to compress the filler 12 against the bottom branch 10 of the belt.
  • the roller 32a is delimited externally by a cylindrical surface 35 divided axially into two equal parts by an annular groove 36 delimited externally in its turn by a concave surface 37.
  • the cylindrical surface 35 engages in contact with the bottom branch 10 of the belt 3 so that the roller 32a is caused to turn on its axis 34 by friction, rotating anticlockwise (as viewed in fig 1) at a peripheral velocity Vp equivalent to the linear velocity Vc at which the belt 3 advances in the feed direction 13.
  • the concave surface 37 presents two diametrally opposed projections 38 timed to operate in conjunction with the gauging device 27, and in such a way that the compacting action applied to the filler 12 is more accentuated on the portions 30 of greater thickness than on the remaining portions 29.
  • the filler 12 is advanced by the belt 3 along the feed path 14 and directed thus through the gauging station 28, where the filler 12 is trimmed down in such a way as to generate portions 29 and 30 of different thickness, thence into the compacting station 31.
  • the tobacco filler 12 presents a substantially uniform thickness of closely packed tobacco particles 11, with areas corresponding to the portions denoted 30 that remain stable when the filler 12 is transferred to the top branch 20 of the conveyor 16 and directed into the device 25 by which it is enveloped in the web 22 of paper to form the continuous cigarette rod 2.

Landscapes

  • Wrapping Of Specific Fragile Articles (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
EP96830285A 1995-05-18 1996-05-17 Verfahren und Einheit zur Bildung einem fortlaufenden Zigarettenstrang in einer Zigarettenherstellungsmaschine Withdrawn EP0743020A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO950235 1995-05-18
IT95BO000235A IT1278206B1 (it) 1995-05-18 1995-05-18 Metodo ed unita' per la formazione di un baco continuo di sigaretta in una macchina confezionatrice di sigarette

Publications (1)

Publication Number Publication Date
EP0743020A1 true EP0743020A1 (de) 1996-11-20

Family

ID=11340607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96830285A Withdrawn EP0743020A1 (de) 1995-05-18 1996-05-17 Verfahren und Einheit zur Bildung einem fortlaufenden Zigarettenstrang in einer Zigarettenherstellungsmaschine

Country Status (3)

Country Link
EP (1) EP0743020A1 (de)
AU (1) AU5231196A (de)
IT (1) IT1278206B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1525809A1 (de) * 2003-10-20 2005-04-27 G.D S.p.A. Einheit und Verfahren zur Herstellung eines kontinuierlichen Zigarettenstranges in einer Zigarettenherstellungsmaschine
IT201700017823A1 (it) * 2017-02-17 2018-08-17 Gd Spa Macchina per la produzione di almeno un baco continuo di materiale filtrante o tabacco.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432938A (en) * 1941-07-30 1947-12-16 Molins Machine Co Ltd Rod forming mechanism
US3032041A (en) * 1957-01-10 1962-05-01 Decoufle Usines Tobacco-manipulating machines
DE2832483A1 (de) * 1978-07-24 1980-02-07 Hauni Werke Koerber & Co Kg Verfahren und vorrichtung zum herstellen von zigaretten mit verstaerkten enden
EP0645098A1 (de) * 1993-09-29 1995-03-29 Hauni Maschinenbau Aktiengesellschaft Vorrichtung zum Abnehmen von überschüssigem Tabak von einem Tabakstrang

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432938A (en) * 1941-07-30 1947-12-16 Molins Machine Co Ltd Rod forming mechanism
US3032041A (en) * 1957-01-10 1962-05-01 Decoufle Usines Tobacco-manipulating machines
DE2832483A1 (de) * 1978-07-24 1980-02-07 Hauni Werke Koerber & Co Kg Verfahren und vorrichtung zum herstellen von zigaretten mit verstaerkten enden
EP0645098A1 (de) * 1993-09-29 1995-03-29 Hauni Maschinenbau Aktiengesellschaft Vorrichtung zum Abnehmen von überschüssigem Tabak von einem Tabakstrang

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1525809A1 (de) * 2003-10-20 2005-04-27 G.D S.p.A. Einheit und Verfahren zur Herstellung eines kontinuierlichen Zigarettenstranges in einer Zigarettenherstellungsmaschine
IT201700017823A1 (it) * 2017-02-17 2018-08-17 Gd Spa Macchina per la produzione di almeno un baco continuo di materiale filtrante o tabacco.
EP3363302A1 (de) * 2017-02-17 2018-08-22 G.D. S.p.A Maschine zur herstellung mindestens einer durchgehenden stange aus filtermaterial oder tabak

Also Published As

Publication number Publication date
ITBO950235A0 (it) 1995-05-18
IT1278206B1 (it) 1997-11-17
ITBO950235A1 (it) 1996-11-18
AU5231196A (en) 1996-11-28

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