EP2978324B1 - Transporteur permettant le transfert d'articles pour fumeurs en forme de tiges - Google Patents

Transporteur permettant le transfert d'articles pour fumeurs en forme de tiges Download PDF

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Publication number
EP2978324B1
EP2978324B1 EP14716961.9A EP14716961A EP2978324B1 EP 2978324 B1 EP2978324 B1 EP 2978324B1 EP 14716961 A EP14716961 A EP 14716961A EP 2978324 B1 EP2978324 B1 EP 2978324B1
Authority
EP
European Patent Office
Prior art keywords
flute
holes
smokers
conveyor
drum
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
EP14716961.9A
Other languages
German (de)
English (en)
Other versions
EP2978324A1 (fr
Inventor
Fulvio Pastore
Lorenzo SELMI
Nicola VISCANTI
Massimo Sartoni
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
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Publication date
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Publication of EP2978324A1 publication Critical patent/EP2978324A1/fr
Application granted granted Critical
Publication of EP2978324B1 publication Critical patent/EP2978324B1/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
    • A24C5/32—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
    • 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
    • A24C5/327—Construction details of the cigarette transport drum

Definitions

  • This invention relates to a conveyor for transferring rod-shaped smokers' articles.
  • the invention has for an object a conveyor for transferring cigarettes or filter plugs, to which reference is hereinafter made without thereby limiting the scope of the invention.
  • This description refers, without limiting the scope of the invention, to a drum conveyor rotatable about a respective axis and peripherally provided with a plurality of grooves, or flutes, angularly equispaced from each other, running parallel to the drum axis and capable of receiving the smokers' articles moving axially into them and applying suction to the smokers' articles in such a way as to gradually slow them down to a stop and hold them within.
  • Drums of the above mentioned type are commonly used, for example, in machines for attaching filter tips to cigarettes and in machines for making filter plugs, see for example EP 0 682 881 A2 .
  • Each flute on these drums is provided with a plurality of radial holes, each of which has one end facing outside the drum and the other end, positioned inside the drum and, during the period in which a smokers' article must be held in contact with the flute itself, in communication with a chamber which is in turn connected to a source of suction comprising a suction pump.
  • the negative pressure which is transmitted to the radial holes communicating with the flutes.
  • the optimum pressure value varies with variation, for example, of the type of smokers' articles being handled or even with variation of the operating speed of the machine.
  • the negative pressure for example, must be greater when the drum rotates at high speed, so as to better oppose the centrifugal force acting on the cigarette sticks or filter plugs, and must be less when the machine is starting up or is running at a low speed for any reason.
  • valve elements comprising a movable shutter, in particular of the rotary type which can be moved relative to the aperture for the air sucked in, thereby obstructing the aperture to variable extents.
  • These valve elements are relatively unreliable because their operation is strongly affected by the presence, in the air flowing through them, of tobacco dust or substances such as sand mixed with the tobacco (when cigarettes are being handled) or cellulose dust mixed with carbon dust (when filter plugs containing active carbon are being handled). The inevitable presence of these substances causes wear and build-up of dirt, which in turn may lead to clogging up, making the valve elements unfit for use to adjust the negative pressure as described above, which in some cases must be carried out very rapidly.
  • This invention has for aim to provide a conveyor for transferring rod-shaped smokers' articles which overcomes the disadvantages described above with reference to the prior art and which is at once relatively simple and inexpensive to construct.
  • the numeral 1 denotes in its entirety a plant for handling rod-shaped smokers' articles 2, in particular filter plugs or cigarettes.
  • the plant comprises a making machine 3 along which a (at least one) continuous rod 4 of filter material wrapped in a paper material is made in essentially known manner and is fed axially through a cutting station 5 where a cutting device 6 cuts the rod 4 into a sequence of filter plugs 2.
  • the filter plugs 2 are delivered axially one after the other to a receiving roller or drum 7 constituting the infeed section of a handling machine 8 comprising, for example, an assembling machine designed to make filter plugs, each consisting of two or more plugs of filter material of different types.
  • the drum 7 is rotatable continuously about a horizontal axis A parallel to the feed direction of the continuous rod 4 and is able to receive respective filter plugs 2 fed axially into elongate flutes 9 formed on its cylindrical peripheral surface at equal angular intervals and running parallel to the axis A. Each flute 9 receives and holds within it by suction a filter plug 2.
  • the drum 7 transfers the filter plugs 2 in sequence to angularly equispaced suction flutes 10 of a further drum 11, counterrotating relative to the drum 7 and in the same way, the drum 11 transfers the filter plugs 2 in sequence to angularly equispaced, peripheral suction flutes 12 formed on a drum 13 which counterrotates relative to the drum 11.
  • the filter plugs 2 are subjected to operations by which a finished smokers' article is formed.
  • the receiving drum 7 is defined, at its cylindrical surface, by a substantially cylindrical hollow mantle 14.
  • Each of the flutes 9 formed on the mantle 14 has an inlet portion 15 located at the portion of the drum 7 which axially faces the making machine 3, and an end portion 16 extending between the inlet portion 15 and the axial end of the drum 7 furthest from the selfsame making machine 3.
  • the inlet portion 15 of each flute 9 has a length which is substantially equal to the length of a filter plug 2, a transverse dimension which decreases, starting from the end of it giving access to a filter plug 2. from a value exceeding the diameter of a filter plug 2 to a value substantially equal to that diameter, and a depth preferably exceeding the length of the radius of the filter plugs 2.
  • the inlet portion 15 is, in essentially known manner, defined along the leading side of it, relative to the direction of rotation of the drum 7, by an edge which is inclined with respect to a longitudinal axis of extension of the respective flute 9.
  • the end portion 16 of each flute 9 has a length similar to that of the inlet portion 15 and a constant transverse dimension substantially equal to the diameter of a filter plug 2 or just greater than the diameter of a filter plug 2.
  • the end portion 16 of each flute 9 is delimited, at an end zone of it opposite that which communicates with the inlet portion 15, by a stop member 17 integral with the cylindrical peripheral surface of the mantle 14 of the drum 7.
  • each flute 9 On the inlet portion 15 and on the end portion 16 of each flute 9 there are respective rows 18, 19 of holes 20, 21 formed radially relative to the mantle 14, there being, in the example illustrated in Figures 7 and 8 , eight holes per row.
  • the holes 20 and 21 have respective ends giving onto the surface of the respective flute 9 intended to receive a filter plug 2.
  • a Venturi-effect ejector is used to produce a negative pressure using the kinetic energy of an air jet made to flow into the Venturi tube present in the ejector itself upstream of the narrow section.
  • the air moved by the air jet which causes a negative pressure increases its kinetic energy which is reconverted into pressure energy in the divergent part.
  • the holes 20 and 21 forming part of the rows 18 and 19, respectively, present in the inlet portion 15 and in the end portion 16 of each flute 9 are connected to respective chambers 24 and 25 formed on the peripheral surface of a substantially cylindrical shell 26 running alongside the inside surface of the mantle 14 of the drum 7 ( Figures 5-8 ).
  • Each of the chambers 24 and 25 communicates with one of the reduced cross-section zones 27 and 28 of the internal duct 22', 23' of a respective Venturi-effect ejector 22, 23.
  • this negative pressure is transmitted, respectively, from the chambers 24 and 25 to the rows 18 and 19 of holes 20 and 21 of the flutes 9 when the holes 20 and 21 are located with the ends of them inside the drum 7 facing the chambers 24 and 25, that is to say, with reference to Figure 1 , along the arc B travelled by the flutes 9 between the zone where they are axially aligned with the continuous rod 4 of filter material from the making machine 3 and the zone of substantial tangency between the drum 7 and the drum 11.
  • each filter plug 2 from the making machine 3 axially enters a flute 9 of the drum 7, and the front end of that filter plug 2, during its entry into the flute 9 itself, remains in a position facing an inclined leading edge (with reference to the direction of rotation of the drum 7) of the inlet portion 15 of the flute 9, and is suddenly slowed down by the row 18 of suction holes 20, and completes access to the inlet portion 15 of the flute 9 before being reached by the trailing edge of the flute 9 itself, against which it abuts.
  • the axial motion of the filter plug 2 then continues onto the end portion 16 of the flute 9, which progressively slows it down to a stop thanks to the suction applied through its row 19 of holes 21.
  • the filter plug 2 stops in exactly the right position because the filter plug 2 comes into abutment very gently against the stop member 17 associated with the end of the flute 9.
  • the intensity of the suction applied through the holes 20 and 21 of the inlet portion 15 and of the end portion 16 of the flutes 9 travelling the arc B may be selected by acting on the valve elements 30, 31 in such a way that the suction applied at the inlet portion 15 is greater than that at the end portion 16 (filter plug 9 slowed down rapidly and stopped slowly) but it is possible to select the opposite option (filter plugs 9 slowed down more progressively and stopped relatively rapidly).
  • the choice between these options depends on parameters such as, for example, the type of smokers' articles to be handled by the drum 7 (filter plugs, cigarettes), for each of which one type of handling may be preferable to another taking into account the different fragility of the articles themselves.
  • the air used in combination with the Venturi-effect ejectors 22 and 23 is totally free of contamination by tobacco, dust or other substances which might negatively affect the possibility of adjusting the negative pressure applied through holes 20 and 21 of the flutes 9.
  • the Venturi-effect ejectors 22 and 23 might be substituted for a single Venturi-effect ejector, whose narrow cross-section zone is connectable to both rows 18 and 19 of holes 20 and 21.
  • the disadvantages typical of the prior art would be avoided, although it would not be possible to adjust the negative pressure applicable through the two rows 18 and 19 of holes 20 and 21 in the flutes 9 independently of each other.
  • the conveyor of the invention comprising the aforementioned receiving drum 7, might also be a belt conveyor provided with suction flutes on its transporting surface, or it might rotate about an axis which is not horizontal.
  • the making machine 3 described by way of an example makes one continuous rod 4 of filter material wrapped in a strip of paper material, divides the rod into plugs 2 and feeds the plugs 2 into respective flutes 9 on a drum 7.
  • the solution of the invention can, however, be used equally well in combination with a making machine 3 which can make more than one continuous rod 4 of filter material alongside each other, where the plugs 2 obtained from the two rods 4 are fed to respective flutes 9 of respective drums 7 which are mutually juxtaposed and preferably counterrotating.

Claims (8)

  1. Transporteur permettant le transfert d'articles pour fumeurs en forme de tige pourvu d'une pluralité de cannelures allongées (9) conçues pour recevoir des articles pour fumeurs (2) respectifs alimentés dans les cannelures (9) par déplacement axial et pour les tenir par l'aspiration appliquée, dans chaque cannelure (9), à travers une pluralité d'orifices d'aspiration (20, 21) comportant des premières extrémités respectives donnant sur une surface de la cannelure (9) ; ledit transporteur comprenant un tambour rotatif (7) tournant autour d'un axe (A) et dont la surface périphérique substantiellement cylindrique est dotée d'une pluralité de cannelures allongées (9), espacées à intervalles angulaires égaux les unes des autres et se développant parallèlement au même axe (A) ; chaque cannelure (9) comportant une partie d'entrée (15) et une partie d'extrémité (16) et chaque partie d'entrée (15) comportant une dimension transversale, débutant de son extrémité donnant accès à l'article pour fumeurs (2), qui diminue d'une valeur excédant le diamètre d'un article pour fumeurs (2) à une valeur substantiellement égale à ce diamètre et étant défini le long de sa face avant, par rapport à la direction de rotation du tambour (7), par un bord étant incliné par rapport à un axe longitudinal d'extension de la même cannelure (9) ; caractérisé en ce qu'il comprend au moins un éjecteur à effet Venturi (22, 23) associé au transporteur (7) et une source d'air comprimé (29) conduisant à une extrémité du conduit interne (22', 23') de l'au moins un éjecteur à effet Venturi (22, 23) ; les secondes extrémités des orifices (20, 21) associées aux cannelures (9) pouvant se raccorder à une zone à section transversale réduite (27, 28) du même conduit interne (22', 23').
  2. Transporteur selon la revendication 1, caractérisé en ce qu'il comprend deux éjecteurs à effet Venturi (22, 23) ayant une extrémité de leurs conduits internes (22', 23') respectifs conduisant à une source d'air comprimé (29) ; les secondes extrémités des orifices (20, 21) associées, respectivement, à la partie d'entrée (15) et à la partie d'extrémité (16) de chaque cannelure (9) pouvant être reliées à une zone à section transversale réduite (27, 28) du conduit interne (22', 23') d'un éjecteur à effet Venturi (22, 23) respectif.
  3. Transporteur selon la revendication 2, caractérisé en ce qu'il comprend des moyens de vanne (30, 31) interposés entre la source d'air comprimé (29) et les conduits internes (22', 23') respectifs des éjecteurs à effet Venturi (22, 23).
  4. Transporteur selon l'une quelconque des revendications précédentes, caractérisé en ce que l'aspiration appliquée à travers les orifices (20) de la partie d'entrée (15) de chaque cannelure (9) est supérieure à l'aspiration appliquée à travers les orifices (21) de la partie d'extrémité (16).
  5. Transporteur selon l'une quelconque des revendications précédentes, caractérisé en ce que l'aspiration appliquée à travers les orifices (20) de la partie d'entrée (15) de chaque cannelure (9) est inférieure à l'aspiration appliquée à travers les orifices (21) de la partie d'extrémité (16).
  6. Transporteur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une partie d'extrémité (16) de chaque cannelure (9) est délimitée, en correspondance d'une zone d'extrémité de celle-ci opposée à celle communiquant avec la partie d'entrée (15), par un élément d'arrêt (17).
  7. Transporteur selon la revendication 6, caractérisé en ce que l'élément d'arrêt (17) est solidaire d'une surface cylindrique périphérique d'une enveloppe (14) du tambour (7).
  8. Transporteur selon la revendication 7, caractérisé en ce que l'élément d'arrêt (17) situé dans la partie d'extrémité (16) de chaque cannelure (9) est conçu pour garantir que l'article pour fumeurs (2) s'arrête dans la bonne position après que l'article pour fumeurs (2) soit alimenté en venant buter très en douceur contre le même élément d'arrêt (17).
EP14716961.9A 2013-03-27 2014-03-26 Transporteur permettant le transfert d'articles pour fumeurs en forme de tiges Not-in-force EP2978324B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000131A ITBO20130131A1 (it) 2013-03-27 2013-03-27 Convogliatore per il trasferimento di articoli da fumo a forma di barretta.
PCT/IB2014/060182 WO2014155317A1 (fr) 2013-03-27 2014-03-26 Transporteur permettant le transfert d'articles pour fumeurs en forme de tiges

Publications (2)

Publication Number Publication Date
EP2978324A1 EP2978324A1 (fr) 2016-02-03
EP2978324B1 true EP2978324B1 (fr) 2018-10-31

Family

ID=48485252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14716961.9A Not-in-force EP2978324B1 (fr) 2013-03-27 2014-03-26 Transporteur permettant le transfert d'articles pour fumeurs en forme de tiges

Country Status (3)

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EP (1) EP2978324B1 (fr)
IT (1) ITBO20130131A1 (fr)
WO (1) WO2014155317A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20160693A1 (it) * 2016-02-12 2017-08-12 Gd Spa Apparato e metodo per produrre semilavorati destinati a formare parti di articoli da fumo.
IT201900014352A1 (it) 2019-08-08 2021-02-08 Gd Spa Convogliatore e metodo di allineamento per articoli a forma di barretta
IT201900017195A1 (it) * 2019-09-25 2021-03-25 Gd Spa Tamburo e metodo per la rullatura di articoli di forma a barretta

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667587A (en) * 1969-04-18 1972-06-06 Molens Ltd Continuous rod making machines
IT1176478B (it) * 1983-08-29 1987-08-18 Hauni Werke Koerber & Co Kg Procedimento e dispositivo per trasferire sigarette da un dispositivo per formare un filone doppio ad una macchina per applicare filtri
EP0682881B1 (fr) * 1994-05-20 2000-08-23 G.D Societa' Per Azioni Unité de transfert de portions de cigarette d'une machine de fabrication à deux tiges vers une machine d'assemblage de filtre
DE102010010075B3 (de) * 2010-02-25 2011-06-22 Hauni Maschinenbau AG, 21033 Vorrichtung und Verfahren zum Überführen stabförmiger Artikel der Tabak verarbeitenden Industrie aus einem Magazin in eine Förderleitung

Also Published As

Publication number Publication date
WO2014155317A1 (fr) 2014-10-02
ITBO20130131A1 (it) 2014-09-28
EP2978324A1 (fr) 2016-02-03

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