EP1454542B1 - Method and unit for simultaneously forming multiple tabacco mats - Google Patents

Method and unit for simultaneously forming multiple tabacco mats Download PDF

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Publication number
EP1454542B1
EP1454542B1 EP04100914A EP04100914A EP1454542B1 EP 1454542 B1 EP1454542 B1 EP 1454542B1 EP 04100914 A EP04100914 A EP 04100914A EP 04100914 A EP04100914 A EP 04100914A EP 1454542 B1 EP1454542 B1 EP 1454542B1
Authority
EP
European Patent Office
Prior art keywords
conduit
downflow
tobacco
switch
conduits
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
EP04100914A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1454542A1 (en
Inventor
Fausto Mengoli
Massimo Sartoni
Fiorenzo Draghetti
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 EP1454542A1 publication Critical patent/EP1454542A1/en
Application granted granted Critical
Publication of EP1454542B1 publication Critical patent/EP1454542B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A24C5/1835—Multiple rod making devices

Definitions

  • the present invention relates to a method and unit for simultaneously forming multiple tobacco mats on a multiple-rod cigarette manufacturing machine.
  • an input stream of shredded tobacco is fed to a downflow conduit, the bottom end of which has a wedge-shaped partition member defining the inputs of two conduits, each of which communicates, via a respective carding assembly, with a respective upflow conduit closed by a respective conveyor belt for a respective mat of tobacco.
  • the partition member normally divides the input stream of shredded tobacco into substreams equal in number to the upflow conduits to form an equal number of tobacco mats, which should theoretically be identical.
  • identical mats which presuppose a homogenous input stream of shredded tobacco across its whole section, are difficult to achieve, and cigarettes formed by cutting rods produced from different tobacco mats invariably differ slightly.
  • EP-1364588-A1 was filed before, but published after the date of filing of the present application and discloses an arrangement for the formation of at least two tobacco rods in a cigarette rod making machine.
  • an input stream of shredded tobacco is fed to a switch conduit selectively alignable with the inputs of two downflow conduits, each of which communicates via a respective carding assembly with a respective upflow conduit closed by a respective conveyor belt for a respective tobacco mat; the switch conduit being switched between positions selectively aligned with the downflow conduits in response to a clock signal of predetermined frequency.
  • a unit for forming mats of shredded tobacco on a multiple-rod cigarette manufacturing machine as claimed in Claim 4 and, preferably, in any one of the following Claims depending directly or indirectly on Claim 4.
  • Number 1 in the accompanying drawing indicates as a whole a dual-rod cigarette manufacturing machine, which comprises an input portion defined by a unit 2 for forming two mats 3 of shredded tobacco on the underside surface of respective parallel conveyor belts 4 made of material permeable to air, and which run directly beneath respective suction boxes 5 for retaining mats 3 on respective conveyor belts 4 by suction.
  • Unit 2 comprises a loading hopper 6 for an input stream 7 of shredded tobacco fed to the top of hopper 6 by a known tank conveyor 8.
  • Beneath hopper 6, unit 2 comprises two side by side, substantially parallel downflow conduits 9 in a plane parallel to the drawing plane.
  • Each downflow conduit 9 is closed at the bottom by a respective carding assembly 10 comprising a carding roller 11 rotating about an axis 12 in a direction 13, and a known thrower roller 14 substantially tangent to respective carding roller 11 and rotating about an axis 15 parallel to axis 12 in an opposite direction 16 to direction 13.
  • each downflow conduit 9 communicates, via relative carding assembly 10, with the bottom end of a relative upflow conduit 17 closed at the top output end by relative conveyor belt 4.
  • each upflow conduit 17 Along a curved input portion of each upflow conduit 17, a respective intermediate partition 18 defines, to the side of the input end of relative upflow conduit 17, a respective conduit 19, which flows at the top into relative upflow conduit 17 at a given distance from relative conveyor belt 4, and communicates at the bottom with a respective outlet of a compressed air supply circuit 20.
  • switch conduit 22 Flow of the shredded tobacco from hopper 6 to downflow conduits 9 is controlled by an oscillating switch device 21 comprising a switch conduit 22 alignable selectively with the inputs of the two downflow conduits 9.
  • switch conduit 22 extends between two fixed walls 23 (only one shown) parallel to the plane of the accompanying drawing; and switch device 21 comprises two valve members 24 laterally defining switch conduit 22 and forming the cranks of an articulated parallelogram 25, which also comprises a connecting rod 26 connecting the two valve members 24.
  • Each valve member 24, in section, is substantially in the form of an isosceles triangle, and is hinged at a top vertex to fixed walls 23, which define the frame of articulated parallelogram 25, to oscillate about a respective axis 27 parallel to axes 12 and 15.
  • Valve members 24 are defined laterally by respective flat facing surfaces 28, which are maintained parallel by connecting rod 26 and define, between them and together with fixed walls 23, switch conduit 22. At the bottom end opposite respective axis 27, each valve member 24 is defined by a cylindrical surface portion 29, which, as switch device 21 oscillates, closes a respective downflow conduit 9 when switch conduit 22 is aligned with the other downflow conduit 9.
  • Switch device 21 is powered by a motor 30, which is connected to one of the two axes 27 to oscillate articulated parallelogram 25 between two positions aligning switch conduit 22 with one or the other of the two downflow conduits 9, and is controlled by a logic unit 31, which activates motor 30 to switch conduit 22 between said two positions following the emission of a "minimum level” signal and "maximum level” signal emitted by a level detecting device 32 comprising a number of sensors 33 along each downflow conduit 9.
  • the switch is made when the level of shredded tobacco in the downflow conduit 9 not being supplied at the time reaches the "minimum level”; or after a given supply time of one of downflow conduits 9, providing the other downflow conduit 9 in the meantime does not reach the "minimum level”; or when the downflow conduit 9 being supplied reaches the "maximum level".

Landscapes

  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Paper (AREA)
EP04100914A 2003-03-07 2004-03-05 Method and unit for simultaneously forming multiple tabacco mats Expired - Lifetime EP1454542B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000125A ITBO20030125A1 (it) 2003-03-07 2003-03-07 Metodo ed unita` per la realizzazione contemporanea
ITBO20030125 2003-03-07

Publications (2)

Publication Number Publication Date
EP1454542A1 EP1454542A1 (en) 2004-09-08
EP1454542B1 true EP1454542B1 (en) 2005-12-07

Family

ID=32800662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04100914A Expired - Lifetime EP1454542B1 (en) 2003-03-07 2004-03-05 Method and unit for simultaneously forming multiple tabacco mats

Country Status (6)

Country Link
US (1) US20040216751A1 (zh)
EP (1) EP1454542B1 (zh)
CN (1) CN1323618C (zh)
AT (1) ATE311773T1 (zh)
DE (1) DE602004000210T2 (zh)
IT (1) ITBO20030125A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3375302A1 (de) 2017-03-17 2018-09-19 Hauni Maschinenbau GmbH Anordnung und verfahren zum aufbau von wenigstens zwei fasersträngen in einer strangmaschine der tabak verarbeitenden industrie

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE332650T1 (de) * 2002-05-21 2006-08-15 Hauni Maschinenbau Ag Anordnung und verfahren zum aufbau von wenigstens zwei tabaksträngen in einer zigarettenstrangmaschine
DE102004059388B4 (de) * 2004-12-09 2006-11-30 British American Tobacco (Germany) Gmbh Zerfaserung von Tabakmaterial
DE102005013077A1 (de) 2005-03-18 2006-09-28 Hauni Maschinenbau Ag Stauhöhenregelung
ITBO20060387A1 (it) * 2006-05-22 2006-08-21 Gd Spa Macchina confezionatrice per la realizzazione contemporanea di due bachi continui di sigaretta.
IT1393293B1 (it) * 2009-02-26 2012-04-20 Gd Spa Unità di alimentazione di un flusso di particelle di tabacco in una macchina confezionatrice di sigarette.
IT1398602B1 (it) * 2009-02-26 2013-03-08 Gd Spa Unità di alimentazione di un flusso di particelle di tabacco in una macchina confezionatrice di sigarette.
PL217391B1 (pl) * 2011-08-02 2014-07-31 Int Tobacco Machinery Poland Zespół zaworowy do napełniania kątowych kanałów transportowych przepływem masowym elementów prętopodobnych
CN105292985A (zh) * 2015-10-12 2016-02-03 云南昆船设计研究院 一种烟片复烤机均匀喂料的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8432410D0 (en) * 1984-12-21 1985-02-06 Imp Group Plc Forming rod of smokeable material
DE3619579C2 (de) * 1986-06-11 1995-05-18 Hauni Werke Koerber & Co Kg Vorrichtung zur gleichzeitigen Herstellung von zwei Endloszigarettensträngen
DE3808562C2 (de) * 1987-03-28 1999-09-02 Hauni Werke Koerber & Co Kg Verfahren und Vorrichtung zum Herstellen eines Doppelstrangs der tabakverarbeitenden Industrie
DE3742251A1 (de) * 1987-12-12 1989-06-22 Hauni Werke Koerber & Co Kg Strangmaschine zum herstellen eines doppelstrangs der tabakverarbeitenden industrie
IT1237504B (it) * 1988-11-22 1993-06-08 Koerber Dispositivo di alimentazione per un filatoio doppio dell'industria di lavorazione del tabacco.
IT1225358B (it) * 1988-12-06 1990-11-13 Gd Spa Macchina confezionatrice per la realizzazione contemporanea di due bachi continui di sigaretta
DE10035692A1 (de) * 2000-07-20 2002-01-31 Hauni Maschinenbau Ag Verfahren und Vorrichtung zum Vereinzeln von Tabakfasern
ATE332650T1 (de) * 2002-05-21 2006-08-15 Hauni Maschinenbau Ag Anordnung und verfahren zum aufbau von wenigstens zwei tabaksträngen in einer zigarettenstrangmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3375302A1 (de) 2017-03-17 2018-09-19 Hauni Maschinenbau GmbH Anordnung und verfahren zum aufbau von wenigstens zwei fasersträngen in einer strangmaschine der tabak verarbeitenden industrie

Also Published As

Publication number Publication date
US20040216751A1 (en) 2004-11-04
EP1454542A1 (en) 2004-09-08
CN1539346A (zh) 2004-10-27
CN1323618C (zh) 2007-07-04
DE602004000210T2 (de) 2006-08-03
DE602004000210D1 (de) 2006-01-12
ITBO20030125A1 (it) 2004-09-08
ATE311773T1 (de) 2005-12-15

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