EP2999364B2 - Device for feeding filter rods in an automatic machine for the tobacco industry - Google Patents

Device for feeding filter rods in an automatic machine for the tobacco industry Download PDF

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Publication number
EP2999364B2
EP2999364B2 EP14727938.4A EP14727938A EP2999364B2 EP 2999364 B2 EP2999364 B2 EP 2999364B2 EP 14727938 A EP14727938 A EP 14727938A EP 2999364 B2 EP2999364 B2 EP 2999364B2
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EP
European Patent Office
Prior art keywords
face
cutting
cooling
filter
front face
Prior art date
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Active
Application number
EP14727938.4A
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German (de)
English (en)
French (fr)
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EP2999364A1 (en
EP2999364B1 (en
Inventor
Marco Esposti
Ivan Eusepi
Massimo Sartoni
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GD SpA
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GD SpA
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Application filed by GD SpA filed Critical GD SpA
Priority to PL14727938.4T priority Critical patent/PL2999364T6/pl
Publication of EP2999364A1 publication Critical patent/EP2999364A1/en
Publication of EP2999364B1 publication Critical patent/EP2999364B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/025—Final operations, i.e. after the filter rod forming process
    • A24D3/0254—Cutting means

Definitions

  • This invention relates to a device for feeding filter rods in an automatic machine for the tobacco industry.
  • filter rod is used to mean a stick of filter material of predetermined length from which two, three or more filter plugs are obtained in a filter tip attachment machine, or filter maker, by means of a transversal cutting operation.
  • these filter plugs are twice the length of the filters to be applied to a filter-tipped cigarette.
  • filter tip attachment machines which this description refers to in particular, without limiting the invention
  • individual filter rods are withdrawn from the bottom of a hopper by means of a pickup roller provided with suction flutes for receiving a single filter rod each.
  • the filter rods are moved away from the hopper one by one and, at one or more cutting stations, are cut into plugs which are transferred to the next roller downstream.
  • Each flute on the pickup roller besides acting as a retaining element for holding down individual filter rods, also acts as a means for opposing one or more disc knives rotating about respective axes parallel to the axis of rotation of the pickup roller during the operation by which the filter rods are cut.
  • each knife passes through respective radial slots made in the pickup roller transversely to each flute, in such a way as to cut each filter rod transversely.
  • each disc knife which is a function of the rotation speed of the pickup roller, and the friction created between the knife blade and the filter during the cutting operation cause the disc knife to become very hot.
  • the temperature may be in the order of 60-65°C.
  • the disc knife blade transfers part of the heat to the portion of the filter rod cut and, more specifically, to the corresponding cut surfaces of the filter plugs obtained from the rod.
  • the filter rods are made from a material containing a polymer, and in particular, a material of plastic origin, the heat from the disc knife blade causes burning and local melting at the cut surfaces.
  • the polymeric material vitrifies upon cooling and thereby reduces or destroys the ventilating or aerating function of the filter tip material.
  • a customary device for feeding filter rods which comprises the features as mentioned in the preamble of the present claim 1 is described in DE1258318B .
  • This invention has for an aim to provide a device for feeding filter rods in a filter tip attachment machine to overcome the above mentioned disadvantages.
  • This invention accordingly provides a device for feeding filter rods in an automatic machine for the tobacco industry having the features set out in independent claim 1.
  • filter rod 2 is used to mean a stick of filter material of predetermined length from which two or three filter plugs are obtained by means of a transversal cutting operation.
  • Each filter rod 2 comprises inside it a filter material 2a wrapped in a wrapping sheet 2b.
  • the filter material 2a is of polymeric origin, and more specifically, of plastic origin.
  • the filter material 2a is of biodegradable plastic origin.
  • the feeding device 1 comprises a hopper 3 for containing a mass 4 of filter rods 2.
  • the feeding device 1 comprises a hold-down and transfer roller 5 for holding down and transferring the filter rods 2 and located downstream of the hopper 3. With reference to Figure 1 , the roller 5 rotates in a clockwise direction about its axis of rotation 6.
  • the axis of rotation 6 is a horizontal axis normal to the plane of Figure 1 . More specifically, the bottom of the hopper 3 is closed by the hold-down and transfer roller 5.
  • the roller 5 is peripherally provided with a plurality of longitudinal flutes 7 running parallel to the axis 6, each of which is capable of picking up and holding down a single filter rod 2.
  • the axis of rotation 8a of the opposing roller 8 is a horizontal axis normal to the plane of Figure 1 .
  • the opposing roller 8 rotates in the same direction of rotation as the roller 5.
  • the hold-down and transfer roller 5 conveys the filter rods 2 along a predetermined path P.
  • the device 1 comprises cutting means 9, in particular for transversely cutting the filter rods 2 into filter plugs 10.
  • the cutting means 9 cut the filter rods 2 transversely in such a way as to divide them into filter plugs 10.
  • the filter plugs 10 are cut in equal lengths.
  • the cutting means 9 are counter-rotating relative to the hold-down and transfer roller 5 and, with reference to Figure 1 , rotate in clockwise direction.
  • the cutting means 9 face the hold-down and transfer roller 5 and define therewith at least one cutting station 11.
  • the cutting station 11 is located downstream of the hopper 3 along the predetermined path P.
  • the cutting station 11 is located downstream of the opposing roller 8.
  • the cutting means 9 comprise at least one disc knife 12 rotating about its axis of rotation 12a which is parallel to the axis of rotation 6 of the hold-down and transfer roller 5.
  • the disc knife 12 comprises a front face 19 and a rear face 20, on the side opposite the front face 19, and a circumferential cutting blade 21 connecting the front face 19 to the rear face 20.
  • the front face 19 and the rear face 20 have a substantially circumferential surface.
  • each disc knife 12 passes through respective radial slots made in the hold-down and transfer roller 5 transversely to each flute 7, in such a way as to cut each filter rod 2 transversely.
  • the cutting means 9 comprise a single disc knife 12.
  • the flutes 7 of the hold-down and transfer roller 5 each have one intermediate slot allowing the blade 21 of the disc knife 12 to pass through it.
  • the cutting means 9 comprise a pair of disc knives 12: more specifically, the numeral 13 denotes a first disc knife and the numeral 14 a second disc knife.
  • the flutes 7 of the hold-down and transfer roller 5 each have two parallel slots at the positions where the blades 21 of the rotary disc knives 12 pass through them.
  • first and second knives 13 and 14 are mounted in sequence with each other, from upstream to downstream on the path P in the direction of rotation of the hold-down and transfer roller 5.
  • the first and second disc knives 13 and 14 are spaced from each other in a direction parallel to the axis 6 of the hold-down and transfer roller 5, as illustrated in Figures 4 and 5 .
  • the device 1 comprises cooling means 22 for cooling the cutting means 9 and capable of removing the heat generated by the cutting means 9 themselves on account of the high speeds of rotation of the cutting means 9 and the friction created between the blade 21 of the cutting means 9 and the filter rods 2.
  • the cooling means 22 are located at least downstream of the cutting station 11 in the direction of rotation of the cutting means 9, as illustrated in Figure 1 .
  • the cooling means 22 can cool each portion of the cutting means 9 as it leaves the cutting station 11 where each filter rod 2 is cut into the filter plugs 10.
  • the cooling means 22 might equally be located upstream of the cutting station 11 in the direction of rotation of the cutting means 9 or both upstream and downstream of the cutting station 11 in the direction of rotation of the cutting means 9.
  • the cooling means 22 face at least one of either the front face 19 or the rear face 20 of each disc knife 12.
  • the cooling means 22 comprise at least one nozzle 23 for delivering a cooling fluid 24 and positioned to face at least one of the faces 19, 20 of the cutting means 9, in such a way that the cooling fluid 24 strikes at least one of the faces 19, 20 of the cutting means 9.
  • the nozzle 23 of the cooling means 22 is located in the proximity of the cutting blade 21.
  • cooling fluid is used to mean any fluid whose temperature is lower than the temperature reached by the cutting means 9 when hot.
  • the cooling fluid is air.
  • the cooling fluid is air at ambient or conditioned temperature.
  • the cooling fluid is a liquid at ambient or conditioned temperature.
  • the cooling means 22 face both the front face 19 and the rear face 20 of each disc knife.
  • a first nozzle 23a faces the front face 19 and a second nozzle 23b faces the rear face 20.
  • the cooling means 22 face at least one portion of the cutting blade 21. More specifically, they face the portion of the cutting blade coming out of the cutting station 11.
  • cooling means 22 are made directly on the cutting means 9.
  • cooling means 22 are made at least at one of either the front face 19 or the rear face 20.
  • the cooling means 22 in the second variant embodiment are in the form of one or more recesses 25 for removing heat from the disc knife 12 formed on least at one of either the front face 19 or the rear face 20 of the disc knife 12.
  • the front face 19 and the rear face 20 each have a plurality of recesses 25 which are equispaced from each other.
  • the recesses 25 on the front face 19 are offset relative to the recesses 25 on the rear face 20 so that the thickness of the disc knife 12 at the circular crown defined by the recesses 25 is constant.
  • the recesses 25 promote dispersal of the heat from the disc knife 12.
  • the presence of the recesses 25 on at least one of either the front or rear face 19 or 20 reduces the thickness of the disc knife 12 compared to the rest of the disc knife 12 without the recesses 25, thus facilitating the removal of heat as the disc knife 12 rotates.
  • the recesses 25 are formed in the proximity of the cutting blade 21.
  • each recess 25 has a substantially circular shape, and more specifically, an elliptic shape.
  • the device 1 comprises first cooling means 26 facing at least one of either the front face 19 or the rear face 20 of each disc knife 12, as well as second cooling means 27 made on at least one of the two faces 19, 20 of each disc knife 12.
  • the first cooling means 26 comprise a first and a second nozzle 23a,23b for delivering the cooling fluid and each located to face a respective front and rear face 19 and 20 of the cutting means 9, and more specifically, the front and the rear face 19 and 20 of both the first and the second disc knife 13 and 14.
  • the front face 19 and the rear face 20 of the first and the second disc knife 13 and 14 have respective cooling recesses 25 which define the second cooling means 27.
  • the front face 19 and the rear face 20 of the first and the second disc knife 13 and 14 have respective cooling recesses 25 which are equispaced from each other.
  • the first cooling means 26 are located at a portion of the disc knife 12 that is further towards the centre than the cooling recesses 25.
  • the nozzles 23 face that portion and deliver the cooling fluid thereon.
  • the cooling recesses 25 prevent heat from accumulating at the cutting blade 21, whilst the first and second nozzles 23a, 23b deliver the cooling fluid directly to the front face 19 and rear face 20 so as to remove the rest of the heat.
  • the heat generated by the disc knives 12, in particular by the cutting blades 21, while they cut the filter rods 2 is removed continuously by the cooling means 22.
  • the portion of the cutting blade 21 coming out of the cutting station 11 disperses the heat accumulated during rotation about the axis 12a so that once the cutting blade 21 has come full circle, it can cut another filter rod 2 into filter plugs 10 without overheating the cut surfaces of the filter plugs 10 themselves.
  • This invention is particularly advantageous for cutting filter rods 2 made from filter material comprising material of polymeric origin, because the cooling action guaranteed by the cooling means 22 prevents the cutting blade 21 from burning or even partly melting the filter material of polymeric origin, thereby preventing it from vitrifying and obstructing the ventilation passages of the filter plug 10 itself.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
EP14727938.4A 2013-05-21 2014-05-14 Device for feeding filter rods in an automatic machine for the tobacco industry Active EP2999364B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14727938.4T PL2999364T6 (pl) 2013-05-21 2014-05-14 Urządzenie do podawania prętów filtra w automatycznej maszynie do przemysłu tytoniowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000234A ITBO20130234A1 (it) 2013-05-21 2013-05-21 Dispositivo di alimentazione di bacchette di filtro di una macchina automatica dell'industria del tabacco.
PCT/IB2014/061422 WO2014188305A1 (en) 2013-05-21 2014-05-14 Device for feeding filter rods in an automatic machine for the tobacco industry

Publications (3)

Publication Number Publication Date
EP2999364A1 EP2999364A1 (en) 2016-03-30
EP2999364B1 EP2999364B1 (en) 2018-09-05
EP2999364B2 true EP2999364B2 (en) 2022-05-11

Family

ID=48793357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14727938.4A Active EP2999364B2 (en) 2013-05-21 2014-05-14 Device for feeding filter rods in an automatic machine for the tobacco industry

Country Status (4)

Country Link
EP (1) EP2999364B2 (pl)
IT (1) ITBO20130234A1 (pl)
PL (1) PL2999364T6 (pl)
WO (1) WO2014188305A1 (pl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20154981A1 (it) * 2015-10-19 2017-04-19 Gd Spa Dispositivo e metodo per la movimentazione di corpi tubolari.
ITUA20161489A1 (it) 2016-03-10 2017-09-10 Gd Spa Testa di taglio per il taglio di spezzoni a forma di bacchetta in macchine per la produzione di articoli da fumo.
DE102018106825A1 (de) 2018-03-22 2019-09-26 Hauni Maschinenbau Gmbh Fördereinrichtung für stabförmige Rauchartikel
DE102018106827B4 (de) 2018-03-22 2021-06-10 Hauni Maschinenbau Gmbh Fördereinrichtung für stabförmige Rauchartikel
CN110154140A (zh) * 2019-06-19 2019-08-23 常德烟草机械有限责任公司 一种基棒切割装置
CN117426546A (zh) * 2023-12-11 2024-01-23 龙岩烟草工业有限责任公司 滤棒切刀冷却装置和滤棒切割装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030015623A (ko) † 2001-08-17 2003-02-25 (주)호산시스템 절단기용 절단 날
US20060230899A1 (en) † 2003-05-22 2006-10-19 Rudolf Supe-Dienes Longitudinal cutting machine with a cooled cutter blade
WO2012161605A2 (en) † 2011-05-23 2012-11-29 International Tobacco Machinery Poland Sp. Z O.O. Detachable cutting head for the apparatus for feeding sets of filter segments, drive apparatus for detachable cutting head and method of replacement of detachable cutting head

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1258318B (de) * 1957-08-05 1968-01-04 Olin Mathieson Vorrichtung zum Herstellen von Mehrfachfiltern fuer Zigaretten od. dgl.
US6955590B1 (en) * 2002-11-26 2005-10-18 Davis Francis R Ice resurfacing blade sharpener
US7674218B2 (en) * 2006-12-28 2010-03-09 Philip Morris Usa Inc. Filter component cutting system
PL395519A1 (pl) * 2011-06-30 2013-01-07 Int Tobacco Machinery Poland Plaszcz prowadzacy segmenty filtrowe
PL230013B1 (pl) * 2013-02-06 2018-09-28 Int Tobacco Machinery Poland Spolka Z Ograniczona Odpowiedzialnoscia Sposób i urządzenie do cięcia materiałów filtracyjnych

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030015623A (ko) † 2001-08-17 2003-02-25 (주)호산시스템 절단기용 절단 날
US20060230899A1 (en) † 2003-05-22 2006-10-19 Rudolf Supe-Dienes Longitudinal cutting machine with a cooled cutter blade
WO2012161605A2 (en) † 2011-05-23 2012-11-29 International Tobacco Machinery Poland Sp. Z O.O. Detachable cutting head for the apparatus for feeding sets of filter segments, drive apparatus for detachable cutting head and method of replacement of detachable cutting head

Also Published As

Publication number Publication date
PL2999364T3 (pl) 2019-03-29
PL2999364T6 (pl) 2022-09-12
ITBO20130234A1 (it) 2014-11-22
EP2999364A1 (en) 2016-03-30
EP2999364B1 (en) 2018-09-05
WO2014188305A1 (en) 2014-11-27

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