EP2604132A1 - Ensemble de compactage, avec une unité d'insertion de fil, pour une machine automatiquede fabrication de filtres pour cigarettes - Google Patents

Ensemble de compactage, avec une unité d'insertion de fil, pour une machine automatiquede fabrication de filtres pour cigarettes Download PDF

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Publication number
EP2604132A1
EP2604132A1 EP20120197353 EP12197353A EP2604132A1 EP 2604132 A1 EP2604132 A1 EP 2604132A1 EP 20120197353 EP20120197353 EP 20120197353 EP 12197353 A EP12197353 A EP 12197353A EP 2604132 A1 EP2604132 A1 EP 2604132A1
Authority
EP
European Patent Office
Prior art keywords
guide tube
supporting body
compacting assembly
screw
spherical joint
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.)
Granted
Application number
EP20120197353
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German (de)
English (en)
Other versions
EP2604132B1 (fr
Inventor
Nicola Baldanza
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
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
Priority to PL12197353T priority Critical patent/PL2604132T3/pl
Publication of EP2604132A1 publication Critical patent/EP2604132A1/fr
Application granted granted Critical
Publication of EP2604132B1 publication Critical patent/EP2604132B1/fr
Active 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
    • 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
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials

Definitions

  • the present invention relates to a compacting assembly, with a thread insertion unit, for an automatic cigarette filter manufacturing machine.
  • the term 'compacting assembly' is intended to mean an assembly for forming at least one continuous cigarette filter rod from a substantially flat strip of filtering material (cellulose acetate).
  • Cigarette filters have been proposed, in which at least one piece of thread is inserted centrally to embellish the filter (i.e. using a thread of a different colour from the conventional white filtering material) and/or to aromatize the filter (using a thread impregnated with volatile aromatic substances).
  • automatic cigarette filter manufacturing machines are equipped with a thread feed unit, on which the thread is unwound off a spool; and an insertion unit, which receives the continuous thread from the feed unit, and inserts it into a strip of filtering material at a compacting assembly, which compacts the strip of filtering material into a rope.
  • the compacting assembly normally comprises a funnel-shaped pneumatic conveyor - known as and hereinafter referred to as a jet - which receives the strip of filtering material at the input, and feeds it to an insertion finger, which completes the compacting operation and terminates in a forming beam, on which the rope of filtering material is wrapped in a gummed paper strip.
  • Known insertion units comprise a guide tube defining a feed channel along which the thread is run; and one end of the guide tube, terminating with a thread outlet opening, is located inside the insertion finger to feed the thread into the centre of the filtering material as it is compacted.
  • the insertion unit is equipped with an adjusting device for adjusting the position of the guide tube - in particular, the outlet opening of the guide tube - thus enabling a skilled technician to adjust the position of the guide tube to centre the thread perfectly inside the filter.
  • a compacting assembly with a thread insertion unit, for an automatic cigarette filter manufacturing machine, as claimed in the accompanying Claims.
  • Number 1 in Figures 1 and 2 indicates as a whole a compacting assembly of a dual (i.e. two-line) automatic cigarette filter manufacturing machine.
  • compacting assembly 1 receives two strips of filtering material (not shown), compacts the strips of filtering material into two ropes of filtering material (not shown), and feeds the ropes of filtering material to two forming beams 2 ( Figure 1 ).
  • the rope of filtering material is fed, in known manner not shown, onto a gummed paper strip, which is then wound transversely about the rope of filtering material to form a continuous filter rod.
  • Compacting assembly 1 comprises two side by side compacting lines 3a and 3b.
  • Each compacting line 3a, 3b comprises a jet 5 ( Figure 2 ) through which the rope of filtering material is fed to a respective insertion finger 6 ( Figure 1 ) terminating in forming beam 2.
  • each jet 5 is connected to a slightly conical, perforated tubular body 8 ( Figure 2 ) having a number of through holes 9 and located directly downstream from jet 5.
  • Body 8 is partly inserted inside an input funnel 10 of finger 6.
  • Input funnel 10 also has a number of through holes 11.
  • the two strips of filtering material fed pneumatically by jets 5 are gathered so that, by the time they reach the output ends of fingers 6, i.e. the inputs of beams 2, they are cylindrical in shape.
  • compacting assembly 1 also comprises an insertion unit 14 for inserting a thread 15, on each compacting line 3a, 3b, into the filtering material as it is compacted.
  • Each thread 15 must be inserted centrally with respect to the corresponding rope of filtering material formed in compacting assembly 1, and may serve to embellish the filters (i.e. using a thread 15 of a different colour from the conventional white filtering material) and/or to aromatize the filters (using a thread 15 impregnated with volatile aromatic substances).
  • Insertion unit 14 For each compacting line 3a, 3b, insertion unit 14 comprises a guide tube 16, which defines a feed channel, through which thread 15 is run, and terminates with an outlet opening from which thread 15 is inserted into the filtering material. The end portion of each guide tube 16 is inserted inside a corresponding insertion finger 6, so that the outlet opening of guide tube 16 is roughly located in the middle of insertion finger 6. Insertion unit 14 also comprises an adjusting device 17 for adjusting the position of the outlet opening of each guide tube 16, to position respective thread 15 correctly inside the filtering material.
  • each guide tube 16 is connected to a fixed part of compacting assembly 1 (preferably, to tubular body 8 of corresponding compacting line 3a, 3b) by a spherical joint 18, which allows guide tube 16 to rotate about two perpendicular axes of rotation with respect to the fixed part (i.e. with respect to tubular body 8 of the corresponding compacting line 3a, 3b).
  • each guide tube 16 is hinged to a fixed part of compacting assembly 1 (to tubular body 8 of corresponding compacting line 3a, 3b) by a spherical joint 18, so as to rotate freely about two perpendicular axes of rotation.
  • Each spherical joint 18 comprises a spherical cap 19 ( Figure 3 ) integral with guide tube 16 (and preferably formed by locally enlarging guide tube 16); and a spherical seat 20 ( Figures 4-7 ), which is integral with the fixed part (i.e. tubular body 8 of corresponding compacting line 3a, 3b), negatively reproduces the shape of spherical cap 19, and houses spherical cap 19 itself.
  • each spherical joint 18 is located at an annular edge 21 of an outlet opening of tubular body 8, i.e. spherical seat 20 of spherical joint 18 is adjacent to, and locally interrupts, annular edge 21 of the outlet opening of tubular body 8 (as shown clearly in Figures 5 and 6 ).
  • each tubular body 8 has a recess 22, which is located upstream from spherical joint 18 (i.e. upstream from spherical seat 20 of spherical joint 18), gradually increases in depth towards spherical joint 18, and loosely houses the portion of guide tube 16 directly upstream from spherical joint 18.
  • Each recess 22 terminates in, and blends seamlessly with, spherical seat 20 of spherical joint 18, so that spherical seat 20 of spherical joint 18 forms a seamless extension of recess 22.
  • the increasing depth of recess 22 performs an important function, by gradually and 'gently' making space for guide tube 16 inside the filtering material coming out of tubular body 8 and entering insertion finger 6.
  • the partly compacted filtering material is fed out of tubular body 8 into insertion finger 6; and, by virtue of the increasing depth of recess 22, the filtering material inside tubular body 8 is deformed gradually (i.e. gently) to make space in which to receive guide tube 16 outside tubular body 8.
  • the presence of guide tube 16 thus has no negative effect on the compacting process.
  • the fixed part of compacting assembly 1 supporting each guide tube 16, with the interposition of spherical joint 18, is other than tubular body 8 of jet 5.
  • Each spherical joint 18 is located at an intermediate portion of guide tube 16, and adjusting device 17 acts mechanically on the part of guide tube 16 upstream from spherical joint 18, to adjust the position of the part of guide tube 16 downstream from spherical joint 18 and terminating in the outlet opening.
  • spherical joint 18 of each guide tube 16 forms a fulcrum dividing guide tube 16 into a controlled arm (terminating in the outlet opening) and a control arm; and adjusting device 17 acts mechanically on the control arm (upstream from spherical joint 18) to adjust the position of the controlled arm (downstream from spherical joint 18).
  • adjusting device 17 comprises a fixed frame 23 integral with a fixed frame of compacting assembly 1 (i.e. of the automatic manufacturing machine).
  • Adjusting device 17 comprises two supporting bodies 24 fitted side by side to fixed frame 23 to translate, with respect to fixed frame 23 and independently of each other, in an adjustment direction 25 perpendicular to guide tubes 16.
  • Adjusting device 17 also comprises two supporting bodies 26, each of which directly supports a respective guide tube 16 (i.e. guide tube 16 is fixed directly to and therefore rigidly integral with supporting body 26), and is fitted to a respective supporting body 24 to translate, with respect to supporting body 24 and independently of the other supporting body 26, in an adjustment direction 27 perpendicular to guide tubes 16 and crosswise to adjustment direction 25.
  • Each supporting body 26 fitted rigidly with (i.e. connected rigidly to) a respective guide tube 16 is therefore fitted to fixed frame 23 (with the interposition of corresponding supporting body 24) to translate, with respect to fixed frame 23, in two different adjustment directions 25 and 27.
  • Each supporting body 26 comprises a slide 28, and the corresponding supporting body 24 comprises a guide 29, to which slide 28 is fitted to run in adjustment direction 27.
  • each slide 28, integral with supporting body 26, is mounted to slide along guide 29 of supporting body 24 in adjustment direction 27.
  • adjusting device 17 comprises a screw 30 parallel to adjustment direction 27 and fitted to supporting body 24 (i.e. supporting body 24 supports screw 30 in such a manner as to allow screw 30 to rotate about its longitudinal axis).
  • adjusting device 17 also comprises a nut screw 31 formed in supporting body 26 and engaged by screw 30, so that rotation of screw 30 produces a corresponding translation of supporting body 26 in adjustment direction 27.
  • each screw 30 is fitted with a take-up spring 32 for taking up slack between the threads of the screw 30/nut screw 31 connection.
  • adjusting device 17 also comprises a control shaft 33, which is mounted for rotation inside corresponding supporting body 24, is inclined with respect to screw 30, and is connected angularly integral with screw 30 by a universal joint 34.
  • each control shaft 33 projects from supporting body 24, and has a manually rotated micrometric screw 35. An operator thus rotates each micrometric screw 35 manually to produce a corresponding rotation of control shaft 33, and therefore of screw 30; and the rotation of screw 30 translates nut screw 31 (and therefore supporting body 26 integral with nut screw 31) in adjustment direction 27.
  • each supporting body 26 comprises a fork 36, which is mechanically connected (loosely) to a pin inserted inside supporting body 24 to 'prevent rotation' of supporting body 26.
  • adjusting device 17 For each supporting body 24, adjusting device 17 comprises a screw 37 parallel to adjustment direction 25 and fitted to fixed frame 23 (i.e. fixed frame 23 supports screw 37 in such a manner as to allow screw 37 to rotate about its longitudinal axis). For each supporting body 24, adjusting device 17 also comprises a nut screw 38 formed in supporting body 24 and engaged by screw 37, so that rotation of screw 37 produces a corresponding translation of supporting body 24 in adjustment direction 25.
  • the two screws 37 are parallel to each other in adjustment direction 25, and extend through both supporting bodies 24: a first screw 37 meshes with nut screw 38 of a first supporting body 24, but is idle with respect to the second supporting body 24; and a second screw 37 meshes with nut screw 38 of the second supporting body 24, but is idle with respect to the first supporting body 24.
  • rotation of the first screw 37 translates the first supporting body 24, but has no effect on the second supporting body 24; and rotation of the second screw 37 translates the second supporting body 24, but has no effect on the first supporting body 24.
  • each screw 37 is fitted with a take-up spring 39 for taking up slack between the threads of the screw 37/nut screw 38 connection.
  • adjusting device 17 also comprises a control shaft 40, which is mounted for rotation inside fixed frame 23, is perpendicular to screw 37, and is connected angularly integral with screw 37 by a bevel gear pair 41.
  • each control shaft 40 projects from fixed frame 23, and has a manually rotated micrometric screw 42. An operator thus rotates each micrometric screw 42 manually to produce a corresponding rotation of control shaft 40, and therefore of screw 37; and the rotation of screw 37 translates nut screw 38 (and therefore supporting body 24 integral with nut screw 38) in adjustment direction 25.
  • one bevel gear pair 41 is connected angularly integral with corresponding screw 37 by a belt drive 43, which comprises a pulley integral with the bevel gear pair, a pulley integral with screw 37, and an endless belt looped about the two pulleys.
  • a belt drive 43 which comprises a pulley integral with the bevel gear pair, a pulley integral with screw 37, and an endless belt looped about the two pulleys.
  • the other bevel gear pair 41 is fitted directly to corresponding screw 37.
  • control shafts 33 and 40 are all parallel and positioned vertically, to make it easier for the operator to set the corresponding micrometric screws 35 and 42 to adjust the position of threads 15.
  • each guide tube 16 is mounted to slide axially on corresponding supporting body 26; and, for each guide tube 16, adjusting device 17 comprises an elastic member 44 (in particular, a Belleville washer) compressed between guide tube 16 and supporting body 26 to push guide tube 16 axially.
  • Each guide tube 16 can thus slide axially with respect to corresponding supporting body 26, to compensate for the variation in its length caused by the arc-chord effect produced by guide tube 16 rotating at spherical joint 18 as a result of the linear translation imposed upstream from spherical joint 18.
  • each guide tube 16 is bound to rotate at spherical joint 18, so, for guide tube 16 to translate linearly, spherical joint 18 must be allowed to slide axially to compensate for the difference between the arc (the trajectory of guide tube 16 forced to rotate) and the chord (the trajectory of supporting body 26 translating linearly).
  • the operator can adjust the position of each thread 15 inside the corresponding filtering material using corresponding micrometric screws 35 and 42, which rotate the corresponding guide tube 16 in adjustment direction 27 and adjustment direction 25 respectively.
  • the position of thread 15 inside the corresponding filtering material can thus be adjusted easily by the operator selecting the appropriate movement to impart to thread 15 (i.e. vertical movement using micrometric screw 35, or horizontal movement using micrometric screw 42).
  • the cigarette filter manufacturing machine is a one-line type, and so comprises one forming beam 2 for producing one continuous filter rod; in which case, compacting assembly 1 comprises one compacting line 3 with one jet 5, one insertion finger 6, and an insertion unit 14 with one guide tube 16.
  • the cigarette filter manufacturing machine may be a three- or four-line type, and so comprise three or four forming beams for producing three or four continuous filter rods; in which case, compacting assembly 1 comprises three or four compacting lines 3, each with a respective jet 5, respective insertion finger 6, and respective guide tube 16.
  • compacting assembly 1 described provides for optimum adjustment of the position of each thread 15 inside the corresponding filtering material. This is achieved by virtue of the position of each thread 15 being adjustable both accurately and easily (intuitively).
  • compacting assembly 1 described is also cheap and easy to implement.
EP20120197353 2011-12-14 2012-12-14 Ensemble de compactage, avec une unité d'insertion de fil, pour une machine automatiquede fabrication de filtres pour cigarettes Active EP2604132B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12197353T PL2604132T3 (pl) 2011-12-14 2012-12-14 Zespół do zagęszczania, z jednostką do wprowadzania nici, dla automatycznej maszyny do produkcji filtrów papierosowych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000709A ITBO20110709A1 (it) 2011-12-14 2011-12-14 Gruppo di compattazione provvisto di una unità di inserimento di un filo per una macchina confezionatrice automatica per la produzione di filtri per sigarette.

Publications (2)

Publication Number Publication Date
EP2604132A1 true EP2604132A1 (fr) 2013-06-19
EP2604132B1 EP2604132B1 (fr) 2015-05-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120197353 Active EP2604132B1 (fr) 2011-12-14 2012-12-14 Ensemble de compactage, avec une unité d'insertion de fil, pour une machine automatiquede fabrication de filtres pour cigarettes

Country Status (4)

Country Link
EP (1) EP2604132B1 (fr)
HU (1) HUE026963T2 (fr)
IT (1) ITBO20110709A1 (fr)
PL (1) PL2604132T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015011619A3 (fr) * 2013-07-22 2015-06-25 International Tobacco Machinery Poland Sp. Z O.O. Procédé et élément permettant de guider un brin de fibres de filtre, et confectionneuse de filtres

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2416662A (en) * 2004-07-30 2006-02-08 C B Kaymich & Company Ltd Apparatus for applying an additive to cigarette filter tow material
WO2007085830A2 (fr) * 2006-01-27 2007-08-02 British American Tobacco (Investments) Limited Procede
WO2010108740A1 (fr) * 2009-03-26 2010-09-30 British American Tobacco (Investments) Limited Buse de guidage pour appareil à fabriquer du filtre en barre

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2416662A (en) * 2004-07-30 2006-02-08 C B Kaymich & Company Ltd Apparatus for applying an additive to cigarette filter tow material
WO2007085830A2 (fr) * 2006-01-27 2007-08-02 British American Tobacco (Investments) Limited Procede
WO2010108740A1 (fr) * 2009-03-26 2010-09-30 British American Tobacco (Investments) Limited Buse de guidage pour appareil à fabriquer du filtre en barre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015011619A3 (fr) * 2013-07-22 2015-06-25 International Tobacco Machinery Poland Sp. Z O.O. Procédé et élément permettant de guider un brin de fibres de filtre, et confectionneuse de filtres

Also Published As

Publication number Publication date
ITBO20110709A1 (it) 2013-06-15
HUE026963T2 (en) 2016-08-29
PL2604132T3 (pl) 2015-10-30
EP2604132B1 (fr) 2015-05-06

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