EP3311680B1 - Maschine und verfahren zur herstellung von zigarettenfiltern - Google Patents

Maschine und verfahren zur herstellung von zigarettenfiltern Download PDF

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Publication number
EP3311680B1
EP3311680B1 EP17196881.1A EP17196881A EP3311680B1 EP 3311680 B1 EP3311680 B1 EP 3311680B1 EP 17196881 A EP17196881 A EP 17196881A EP 3311680 B1 EP3311680 B1 EP 3311680B1
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EP
European Patent Office
Prior art keywords
suction
sticks
filter
rollers
flutes
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EP17196881.1A
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English (en)
French (fr)
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EP3311680A1 (de
Inventor
Vittorio Sgrignuoli
Massimo Sartoni
Luca Federici
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GD SpA
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GD SpA
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    • 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
    • A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
    • A24C5/322—Transporting cigarettes during manufacturing
    • A24C5/326—Transporting cigarettes during manufacturing with lateral transferring means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/025—Final operations, i.e. after the filter rod forming process

Definitions

  • This invention relates to a machine for making cigarette filters and to a related production method.
  • cigarette filters involves processing at least one continuous strip of filter material, for example cellulose acetate, also known by the term of "tow", obtained from a bale of compressed filter material.
  • filter material for example cellulose acetate, also known by the term of "tow”, obtained from a bale of compressed filter material.
  • the two strips are made to advance in parallel along predetermined paths through processing stations where each is stretched lengthways, opened out transversely and then impregnated with plasticizing chemical additives.
  • forming means produce two continuous cylindrical cords of filter material.
  • these forming means have the shape of funnels through which the continuous strips are made to pass in such a way that their transverse cross sections are progressively reduced and they become two cords of predetermined diameter.
  • the cords Downstream of the funnel-shaped devices, the cords are channelled into respective forming channels of a garniture tongue where the continuous cords advance in defined, parallel directions in such a way as to form two continuous filter rods which a rotary cutting device then cuts into separate filter sticks.
  • Each filter stick may have the length of one or more filter tips, depending on requirements, which will be applied to the cigarettes in the filter tip attachment machine.
  • the individual filter sticks are then picked up by acceleration means, consisting for example of two pairs of accelerator rollers, one pair for each stick.
  • Each roller of the pair of accelerator rollers is thus disposed on opposite sides of each filter stick in such a way as to withdraw the sticks and propel them forward at a speed higher than that at which the filter rods advance along the two forming channels.
  • the sticks are spaced from the respective continuous rods and driven forward in a direction parallel to their longitudinal axes towards respective suction flutes on respective transfer rollers which rotate about axes of rotation parallel to the longitudinal axes of the sticks in order to transfer the sticks to subsequent processing stations.
  • the filter sticks are accelerated by the accelerator rollers to allow them to be correctly spaced from the rods and to allow each stick to be inserted precisely and rapidly into the suction flutes of the transfer rollers.
  • Insertion of the sticks must be rapid, precise and synchronized with the rotation of the transfer rollers.
  • the high speed at which the sticks are driven along the respective suction flutes prevents the sticks from hitting against the side walls of the flutes and being damaged.
  • the sticks To prevent damage to the leading ends of the sticks hitting against the transverse wall of the flutes, the sticks must be slowed down by the suction flutes, allowing each to be precisely positioned in the respective flute.
  • Each transfer roller is thus configured to slow down the sticks inside its suction flutes.
  • the suction flutes are provided with openings, usually made in the bottom of each flute and connected to a suction source capable of generating a negative pressure which slows the sticks down as they enter the suction flutes, propelled by the accelerator rollers at high speed and with high kinetic energy.
  • the speed and related energy of the sticks must be cancelled out by an equal force applied by the suction source connected to the suction flutes, so that the sticks can be correctly positioned and aligned inside the flutes without being damaged.
  • the suction flutes must therefore be calibrated and set with a very high degree of precision.
  • Filter making machines known in the prior art comprise a single suction source which serves both the transfer rollers downstream of the garniture tongue and of the accelerator rollers, and the pickup rollers, which are also provided with suction flutes to hold the filter sticks and to which the transfer rollers transfer the sticks.
  • EP1767107 which comprises a garniture tongue for forming a continuous filter rod, a cutting station for cutting the filter rod into filter sticks, pickup and accelerator units to accelerate the cut filter sticks in such a way as to detach them from the continuous rod, and a plurality of rollers for transferring, slowing down and feeding the sticks.
  • a single common suction unit is connected to all the listed rollers.
  • changing the flow rate of the suction flutes of the transfer rollers which is necessary to adjust the slowing-down force when the technical specifications of the filter sticks are changed, means also changing the suction air flow rate in the pickup and rejection rollers located downstream, which, as a result, might not be able to hold the sticks correctly.
  • guaranteeing a higher slowing down suction force at the transfer rollers necessarily means reducing the suction force at the pickup suction rollers downstream.
  • document DE102011117161 discloses a method of transferring filters using different suction sources to different groups of drums, disclosing the fact that some drums need a higher suction level than others, in order to increase the stability of the process, as the suction sources (fans) are smaller and can react more rapidly to fluctuations of the required suction power.
  • this method is respondent to the general purpose of increasing the stability of the transferring of the articles, but is not respondent to other requirements such as, for example, the capability of the machine to operate with this stability on articles of different formats.
  • the technical purpose which forms the basis of this invention is to propose a machine and a method for making cigarette filters to overcome the above mentioned drawbacks of the prior art.
  • the aim of this invention is to provide a machine and a method for making cigarette filters to improve the efficiency of the production process.
  • the numeral 1 denotes in its entirety a machine for making cigarette filters according to the teachings of this invention.
  • cigarette is used to denote a plurality of products or smoking articles including, for example, cigars, cigarillos and the like.
  • the machine 1 comprises a garniture tongue 2 for forming one or more rods.
  • the garniture tongue 2 comprises two forming channels which are funnel-shaped in order to progressively reduce the cross section size of continuous strips F of filter material fed to the garniture tongue 2 itself.
  • the garniture tongue 2 is also provided with outlet tubes whose transverse cross section is substantially equal in diameter to the filters to be made.
  • the garniture tongue 2 is also associated with a wrapping device 2a where the continuous strips F of filter material are progressively wrapped in continuous webs C of paper unwound from rolls, thus forming continuous rods 3 of wrapped filter material.
  • the machine 1 also comprises a cutting station 4 to which the two continuous rods 3 are fed in order to be cut into respective filter sticks 5 of predetermined length, based on production requirements.
  • the filter sticks 5 are then made to advance along the parallel feed paths towards the pickup and accelerator units 6 of the machine 1.
  • the pickup and accelerator units 6 for each filter stick 5 are designed to accelerate the cut filter sticks 5 in such a way as to detach them from the respective continuous rod 3 and to increase the speed at which they move along the parallel feed paths.
  • the machine 1 Downstream of the pickup and accelerator units 6, the machine 1 comprises first suction rollers 7 for transferring and slowing down the sticks 5 and each configured to receive the sticks 5 from the respective feed path.
  • the first suction rollers 7 are provided, on their perimeters, with a plurality of first suction flutes 8 of suitable size to accommodate the filter sticks 5.
  • the first perimeter suction flutes 8 have respective first suction openings, not illustrated in the accompanying drawings, connected to a suction device 9 in such a way as to guarantee a suction force capable of slowing down the forward movement of the sticks 5 inside the first perimeter suction flutes 8 themselves.
  • the filter sticks 5 which had been accelerated by the pickup and accelerator units 6 are brought to a precise stop inside the perimeter suction flutes 8 of the first suction rollers 7, which rotate about axes of rotation parallel to the longitudinal directions of extension of the filter sticks 5.
  • the machine 1 also comprises a second plurality of suction rollers 10 for picking up the filter sticks 5 from the first suction rollers 7 and designed to feed the filter sticks 5 to further processing stations.
  • the second suction rollers 10 rotate about respective axes of rotation parallel to the axes of rotation of the first suction rollers 7 and are tangent to the latter to be able to pick up the filter sticks 5.
  • the second pickup suction rollers 10 are provided with second perimeter suction flutes 11 configured to receive the sticks 5 and provided with respective second suction openings, not illustrated in the accompanying drawings, connected to the suction device 9 in such a way as to guarantee a suction force capable of retaining the sticks 5 during the rotation of the second pickup suction rollers 10.
  • the suction device 9 comprises two suction sources 9a, 9b which are independent of each other: a first suction source 9 is connected to the first, transfer and slowing-down suction rollers 7, and a second suction source 9b is connected to the second suction rollers 10 for picking up the filter sticks 5 from the first, transfer and slowing-down suction rollers 7. Thanks to the presence of the two independent suction sources 9a, 9b, the first suction rollers 7 and the second suction rollers 10 can be adjusted independently of each other so that adjusting the suction air flow rate of one set of rollers does not cause imbalances or unwanted falls in pressure in the other set of rollers.
  • suction in the first suction rollers 7 is obtained by a first suction flow A1 which serves the first suction openings
  • suction in the second suction rollers 10 is obtained by a second suction flow A2 which serves the second suction openings.
  • the two suction flows A1 and A2 are adjustable independently of each other.
  • regulating the air flow of the first suction rollers 7, which enables the filter sticks 5 in the first suction flutes to be correctly slowed down, does not change the air flow rate which produces suction in the second suction openings, thus leaving the pressure on the second suction rollers 10 undisturbed and balanced; and vice versa.
  • the suction sources 9a and 9b are axial fans and the suction air flow rate can be changed by varying the speed of rotation of the fan blades.
  • the machine 1 comprises a control and drive unit 12 programmed to independently control the adjustment of operating parameters of the respective suction sources 9a, 9b.
  • the unit 12 is capable of adjusting the operating parameters of the suction sources 9a, 9b, such as, for example, the speed of rotation of the axial fans, in such a way as to increase or decrease the intensity of the suction flows A1, A2 according to requirements.
  • the unit 12 is programmed to independently control the adjustment of operating parameters of the suction sources 9a, 9b as a function of identification parameters of the filter sticks 5.
  • the identification parameters of the filter sticks 5 - such as, for example, length, specific weight and size - it is possible to adjust the slowing-down capacity of the first suction rollers 7 by simply adjusting the operating parameters of the first suction source 9a independently of those of the second suction source 9b.
  • this invention provides a method for making cigarette filters, comprising the following steps:
  • This invention achieves the preset aims, overcoming the disadvantages of the prior art, by providing the user with a reliable and versatile machine and method for making cigarette filters, capable of reducing the risks of interrupting the production process and thus improving process efficiency.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Glass Compositions (AREA)

Claims (3)

  1. Maschine (1) zur Herstellung von Zigarettenfiltern, umfassend:
    - einen Formungsbalken (2) zum Formen von einem oder mehreren durchgehenden Filterstäben, die entlang von Zuführungswegen vorgeschoben werden,
    - eine Schneidstation (4) zum Schneiden von einem oder mehreren durchgehenden Filterstäben (3) in jeweilige Filtersticks (5),
    - Aufnahme- und Beschleunigungseinheiten (6) für einen jeden Filterstick (5), die ausgestaltet sind, um die geschnittenen Filtersticks (5) so zu beschleunigen, dass sie vom jeweiligen durchgehenden Stab (3) gelöst werden,
    - erste Saugwalzen (7), um die Sticks (5) in jeweilige erste umfangseitige Saugfurchen (8) zu transferieren und zu verlangsamen, wobei eine jede erste Saugfurche (8) jeweilige erste Saugöffnungen aufweist, die mit einer Saugvorrichtung (9) verbunden sind, sodass eine Saugkraft gewährleistet wird, die in der Lage ist, die Vorwärtsbewegung der Sticks (5) in den ersten Saugfurchen (8) zu verlangsamen,
    - eine zweite Vielzahl von Saugwalzen (10), um die Sticks (5) von den ersten Transfer- und Verlangsamungssaugwalzen (7) aufzunehmen, die ausgestaltet sind, um die Sticks (5) weiteren Bearbeitungsstationen zuzuführen, wobei die zweiten Aufnahmesaugwalzen (10) mit zweiten umfangseitigen Saugfurchen (11) versehen sind, die ausgelegt sind, um die Sticks (5) aufzunehmen, und die mit jeweiligen zweiten Saugöffnungen versehen sind, die mit der Saugvorrichtung (9) verbunden sind, sodass eine Saugkraft gewährleistet wird, die in der Lage ist, die Sticks (5) während der Drehung der zweiten Aufnahmesaugwalzen (10) zu halten;
    dadurch gekennzeichnet, dass die Saugvorrichtung (9) zwei unabhängige Saugquellen (9a, 9b) umfasst, wobei eine erste Saugquelle (9a) mit den ersten Transfer- und Verlangsamungssaugwalzen (7) verbunden ist und eine zweite Saugquelle (9b) mit den zweiten Saugwalzen (10) verbunden ist, um die Sticks (5) von den ersten Transfer- und Verlangsamungswalzen (7) aufzunehmen, und dadurch, dass die Maschine (1) eine Steuer- und Antriebseinheit (12) umfasst, die programmiert ist, um zumindest das Regeln von Betriebsparametern der Saugquellen (9a, 9b) abhängig von Identifizierungsparametern der Filtersticks (5) unabhängig zu steuern.
  2. Maschine (1) nach Anspruch 1, wobei die Saugquellen (9a, 9b) Axiallüfter sind.
  3. Verfahren zur Herstellung von Zigaretten, umfassend die folgenden Schritte:
    - Herstellen von einem oder mehreren durchgehenden Filterstäben (3) und deren Zuführen entlang von Zuführungswegen;
    - Schneiden von einem oder mehreren durchgehenden Filterstäben (3) in jeweilige Filtersticks (5);
    - Erhöhen der Zuführungsgeschwindigkeit der Filtersticks (5) entlang der Zuführungswege;
    - Platzieren der Filtersticks (5) in jeweiligen ersten umfangseitigen Saugfurchen (8) von ersten Transfer- und Verlangsamungssaugwalzen (7), während die Filtersticks (5) angesaugt werden, um ihre Bewegung in den jeweiligen ersten Saugfurchen (8) zu verlangsamen;
    - Transferieren der Filtersticks (5) zu einer Vielzahl von zweiten Saugfurchen (11) von zweiten Aufnahmesaugwalzen (10), die die Filtersticks (5) durch Ansaugung halten,
    dadurch gekennzeichnet, dass es einen ersten Schritt zum Regeln der auf die Filtersticks (5) in den ersten Saugfurchen (8) angewandten Ansaugung und einen zweiten Schritt zum Regeln der auf die Filtersticks (5) in den zweiten Saugfurchen (11) angewandten Ansaugung umfasst, wobei der erste und der zweite Regelungsschritt unabhängig voneinander sind und abhängig von Identifizierungsparametern der Filtersticks (5) durchgeführt werden.
EP17196881.1A 2016-10-18 2017-10-17 Maschine und verfahren zur herstellung von zigarettenfiltern Active EP3311680B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102016000104332A IT201600104332A1 (it) 2016-10-18 2016-10-18 Macchina e metodo per la produzione di filtri

Publications (2)

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EP3311680A1 EP3311680A1 (de) 2018-04-25
EP3311680B1 true EP3311680B1 (de) 2024-03-27

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EP17196881.1A Active EP3311680B1 (de) 2016-10-18 2017-10-17 Maschine und verfahren zur herstellung von zigarettenfiltern

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EP (1) EP3311680B1 (de)
IT (1) IT201600104332A1 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2238844B1 (de) * 2009-04-02 2013-07-17 HAUNI Maschinenbau AG Unterdruckversorgung an einer Maschine der Tabak verarbeitenden Industrie

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2006004111A1 (ja) * 2004-07-07 2008-04-24 日本たばこ産業株式会社 フィルタロッドの製造機
DE102011076066A1 (de) * 2011-05-18 2012-11-22 Hauni Maschinenbau Ag Steuerflansch einer Fördertrommel der Tabak verarbeitenden Industrie
DE102011117161A1 (de) * 2011-10-28 2013-05-02 Hauni Maschinenbau Ag Maschine der Tabak verarbeitenden Industrie und Verfahren zum Betreiben einer solchen Maschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2238844B1 (de) * 2009-04-02 2013-07-17 HAUNI Maschinenbau AG Unterdruckversorgung an einer Maschine der Tabak verarbeitenden Industrie

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EP3311680A1 (de) 2018-04-25
IT201600104332A1 (it) 2018-04-18

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