EP1097894B1 - A unit for generating discrete lengths of paper material from a continuous strip - Google Patents

A unit for generating discrete lengths of paper material from a continuous strip Download PDF

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Publication number
EP1097894B1
EP1097894B1 EP00830695A EP00830695A EP1097894B1 EP 1097894 B1 EP1097894 B1 EP 1097894B1 EP 00830695 A EP00830695 A EP 00830695A EP 00830695 A EP00830695 A EP 00830695A EP 1097894 B1 EP1097894 B1 EP 1097894B1
Authority
EP
European Patent Office
Prior art keywords
strip
tension
unit
cam
diverter element
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
EP00830695A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1097894A1 (en
Inventor
Fiorenzo Draghetti
Fulvio Boldrini
Salvatore Rizzoli
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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Filing date
Publication date
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Publication of EP1097894A1 publication Critical patent/EP1097894A1/en
Application granted granted Critical
Publication of EP1097894B1 publication Critical patent/EP1097894B1/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
    • A24C5/47—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces
    • A24C5/471—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces by means of a connecting band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/08—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/63—Oscillating, pivoting around an axis parallel to face of material, e.g. diverting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/65—Other elements in face contact with handled material rotating around an axis parallel to face of material and perpendicular to transport direction, e.g. star wheel
    • B65H2404/652—Other elements in face contact with handled material rotating around an axis parallel to face of material and perpendicular to transport direction, e.g. star wheel having two elements diametrically opposed

Definitions

  • the present invention relates to a unit serving to generate discrete lengths of paper material from a continuous strip.
  • the invention finds application to advantage in a cigarette manufacturing machine, and in particular the filter tip attachment of a cigarette maker, for the preparation of tipping papers from a decoiling roll of continuous strip material; indeed reference is made explicitly to such an application in the following specification albeit with no limitation in scope applied.
  • Filter tipped cigarettes are fashioned generally by interposing a double length filter plug between two axially aligned sticks of cigarette rod, whereupon the three elements are joined by a band of gummed paper and the resulting assembly is cut in half to produce two single filter cigarettes.
  • the tipping papers are obtained from a continuous strip of gummed material directed along a predetermined path toward a cutter device by which the strip is divided into discrete bands of prescribed length.
  • the cutter device comprises two contrarotating rollers with mutually parallel axes of rotation, disposed tangentially one to another.
  • One roller affords an aspirating surface against which the strip is held by suction and drawn forward, and both are equipped with relative blades equispaced angularly around the surface of revolution.
  • each blade of the one roller will interact with corresponding blades of the other roller in such a way as to sever the strip along transverse lines, effecting a scissor type cut: accordingly, each blade of the one roller combines with a blade of the other roller to constitute scissor means by which a discrete length is cut progressively from the strip as the rollers rotate.
  • One of the rollers and more exactly the suction roller, continues to retain each successive tipping paper on its peripheral face after the relative cut is completed and carries it thus into contact with a double cigarette assembly as described briefly above, made up of two cigarette sticks and a double filter plug.
  • the tipping papers must be spaced apart at a suitable distance one from the next after being severed from the continuous strip; this is done by causing the suction roller to rotate at a peripheral velocity higher than the linear velocity at which the strip advances.
  • US Patent 4,943,341 teaches the expedient of introducing a diverter element with a cyclical action preceding the cutter device in the direction followed by the strip, such as will vary the tension of the strip at a frequency coinciding with that of the cutting stroke.
  • the object of the invention is to provide a unit for generating discrete lengths of paper material from a continuous strip, such as will remain free of the drawback described above.
  • the stated object is realized in a unit according to the present invention for generating discrete lengths of paper material from a continuous strip, comprising cutting means by which the papers are severed singly and in succession from the strip at a predetermined cutting frequency, also feed means by which the strip is caused to advance along a
  • the tensioning means comprise a diverter element presenting at least a first and a second transmission member and designed to oscillate cyclically when in operation between two tensioning limit positions in which the at least first and second transmission members interact alternately with the strip in such a way that the strip is diverted and caused to assume the first tension, passing also through an intermediate position in which the strip is caused to assume a second tension slacker than the first tension, and completing each full oscillating cycle between the two limit positions at a frequency equivalent at least to half the cutting frequency of the cutting means.
  • 1 denotes a portion, in its entirety, of a cigarette making machine (not illustrated), and in particular the filter tip attachment of a cigarette maker, which includes a unit 2 for generating discrete lengths 3 of wrapping material, referred to simply as tipping papers, from a continuous strip 4 caused to decoil from a roll (not illustrated) and advance along a predetermined feed path P in a given direction D at a given tension and a given velocity.
  • a unit 2 for generating discrete lengths 3 of wrapping material referred to simply as tipping papers
  • the unit 2 comprises a cutter device 5 by which the papers 3 are severed from the continuous strip 4 and released onto a conveying roller 6 of familiar embodiment set in rotation anticlockwise about a respective axis 6a.
  • the roller 6 is designed to convey assemblies 7 consisting each in two cigarette sticks separated one from the other by a double length filter plug, which are retained pneumatically in conventional manner by respective flutes 8 extending parallel to the straight line generators of the roller, and advanced by the roller 6 in a direction transverse to their own axes through a transfer station 9 at which a paper 3 is offered by the cutter device 5 to the external surface of each assembly 7.
  • the cutter device 5 comprises a first suction roller 10 and a second roller 12, disposed substantially tangential one to the other and rotatable about respective axes 10a and 12a on respective shafts 10b and 12b.
  • the continuous strip 4 is taken up by the suction roller 10 and advanced toward a cutting station 11 at which the first and second rollers 10 and 12 operate in conjunction in such a way as to divide up the strip into single papers 3.
  • the diameter of the first roller 10 is larger than that of the second roller 12, and its peripheral velocity higher than the feed rate of the strip 4, whilst the peripheral surface carries a plurality of blades 13 spaced apart at identical angular distances, of which the respective cutting edges are substantially rectilinear and disposed skew in relation to the axis 10a of rotation.
  • the second roller 12 which rotates at a peripheral velocity substantially equal to the feed rate of the strip 4, carries a plurality of substantially radial blades 14 distributed uniformly around the peripheral surface and disposed with their cutting edges substantially parallel to the axis 12a of the roller 12.
  • the peripheral surface 15 of the first roller 10 is divided by the relative blades 13 into a plurality of aspirating sectors 16 each affording a plurality of suction holes 16a connected to a source of negative pressure (not illustrated, being conventional in embodiment).
  • the unit 2 further comprises feed means 17 serving to supply the continuous strip 4 to the cutter device 5, and operating in conjunction with the first roller 10 in such a way as to advance the strip 4 along the feed path P.
  • feed means 17 will be seen to comprise a pair of pinch rolls 18 and 19 disposed on either side of the feed path P followed by the strip 4.
  • a gumming device 20 lying beyond the pinch rolls 18 and 19 in the feed direction is designed to coat the top face of the strip 4 thinly with an adhesive substance.
  • the device 20 in question comprises a gumming roller 21 and a reaction roller 22 offered respectively to the opposite faces of the strip 4.
  • the diverter element 24 comprises a cam 25 engaging the strip 4 in direct contact and mounted to a pivot 26 centred on an axis of rotation denoted A.
  • the profile 27 of the cam 25 presents two lobes 28 and 29 constituting a first transmission member 30 and a second transmission member 31, respectively, by which the strip 4 is diverted.
  • the cam 25 is invested cyclically with alternating rotary motion about the aforementioned axis A between a first angular limit position PA1 and a second angular limit position PA2.
  • the tension of the strip 4 is the same in either one of the aforementioned limit positions PA1 and PA2, and it is in this taut condition Tn1 that the first part of the cut is made in the strip 4 by the relative device 5.
  • the strip 4 For the second part of the cut to be made properly, as intimated in the preamble, the strip 4 needs to be at a tension Tn2 less than Tn1.
  • the cam 25 is rotated to a position denoted PA0, indicated by a bold line in fig 1, in which there is substantially no diversion of the strip 4 from the feed path P as it advances relaxed between the gumming device 20 and the cutter device 5.
  • the strip 4 is diverted from its normal trajectory by the cam 25, displaced from the feed path P by contact with the first transmission member 30 which coincides with the first lobe 28 of the selfsame cam 25.
  • the cam 25 rotates anticlockwise, as viewed in fig 1, to assume the position denoted PA0 in which the strip 4 rides over a portion 27a of the cam profile 27 interconnecting the two lobes 28 and 29.
  • strip tensioning means 23 comprise a diverter element 24 that consists in a rocker 33 supported by a pivot 40 and rotatable about an axis denoted B.
  • the rocker 33 presents a first arm 33a and a second arm 33b engaging the strip 4 by way of respective contact rollers 35a and 35b.
  • Each roller 35a and 35b is carried by a relative projecting end of the respective arm 33a and 33b, and freely rotatable.
  • the two rollers 35a and 35b constitute respective first and second transmission members 30 and 31.
  • the oscillating action of the rocker 33 is similar in every respect to that of the cam 25, in that it derives from power transmitted by the alternating drive means 32 in such a way as to produce rotary motion about the aforementioned axis B between two limit positions PA1 and PA2 in which the strip 4 is drawn taut.
  • the rocker 33 moves through a cycle like that of the cam 25, starting for example from the position denoted PA1 in which the strip 4 is in the taut condition Tn1, by rotating anticlockwise through the position denoted PAO to that denoted PA2, in which the strip 4 assumes the relaxed condition Tn2 and reassumes the taut condition Tn1, respectively.
  • the direction of the rotary motion is inverted and the rocker 33 will rotate clockwise back through the intermediate position PA0 to the initial position PA1, in which the strip reassumes the relaxed condition Tn2 and the taut condition Tn1, respectively.
  • the diverter element 24 of the tensioning means 23 is embodied as a crank 36, pivotable about an axis denoted C, of which a free end is forked and exhibits two arms 36a and 36b.
  • the ends of the arms 36a and 36b carry respective rollers 47a and 47b offered in direct contact one to each face of the strip 4.
  • Fig 4 illustrates a second embodiment of the cam 25 in which the portion 27a of the profile 27 between the two lobes 28 and 29 is of concave geometry.
  • Such a solution might be adopted in order to limit the angular excursion of the diverter element 24 during the oscillating movement and thus minimize problems connected with the inertia of component parts in the element 24.
  • the width of the strip dictates the need for a diverter element of appreciable dimensions, of which the mass, given the high operating speeds of the machines in question, will generate inertia forces that can be attenuated at least by limiting the angular travel of the diverter element 24.
  • the diverter element 24 is designed as a double acting component characterized by alternating rotary motion, and therefore capable of stroking at half the operating frequency of the cutter device 5.
  • the complete oscillating cycle includes two steps or positions whereby the strip 4 is drawn taut, alternated with two steps in which the strip 4 is relaxed and advances in contact with portions of the cam 25 exhibiting a shorter radial dimension.
  • figs 5 to 9 show the operating sequence of one half the oscillating cycle of a diverter element 24 comprising a cam 37 pivotable about an axis of rotation denoted D.
  • the profile 38 of the cam 37 exhibits three lobes 38a, 38b and 38c constituting respective transmission members 39a, 39b and 39c and disposed internally tangential to a common circumference of which the centre coincides with the axis D.
  • the cam 37 in question is set in motion by alternating drive means not shown in figs 5 to 9, which illustrate only the cam 37 and the diverted strip 4, in the interests of clarity.
  • the cam 37 rotates anticlockwise in the direction of the arrow (see fig 5) to assume the position denoted PB1 illustrated in fig 6, in which the strip 4 follows a linear trajectory along the feed path P advancing in the relaxed condition Tn2.
  • the cam 37 takes up the position PB2 illustrated in fig 7, in which the strip 4 is tensioned in the taut condition Tnl by the action of a second lobe 38b.
  • Fig 8 illustrates a subsequent position PB3 of the cam 37 in which the strip 4 is once again in the relaxed condition Tn2 and rides over two lobes 38b and 38c positioned tangentially to the feed path P.
  • the cam 37 makes one more anticlockwise rotation toward a limit position PB4 illustrated in fig 9, in which the strip 4 is again tensioned in the taut condition Tn1 through the agency of the remaining lobe 38c.
  • the direction of rotation is inverted and the sequence repeated in reverse order, with the cam 37 moving in the direction of the arrow in fig 9 through the positions PB3, PB2 and PB1 described above to regain the starting position PB0.
  • the oscillating cycle of the cam 37 is completed.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP00830695A 1999-11-02 2000-10-24 A unit for generating discrete lengths of paper material from a continuous strip Expired - Lifetime EP1097894B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999BO000584A IT1311116B1 (it) 1999-11-02 1999-11-02 Unita' per la realizzazione di spezzoni di materiale cartaceo apartire da un nastro continuo.
ITBO990584 1999-11-02

Publications (2)

Publication Number Publication Date
EP1097894A1 EP1097894A1 (en) 2001-05-09
EP1097894B1 true EP1097894B1 (en) 2003-05-14

Family

ID=11344314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00830695A Expired - Lifetime EP1097894B1 (en) 1999-11-02 2000-10-24 A unit for generating discrete lengths of paper material from a continuous strip

Country Status (5)

Country Link
EP (1) EP1097894B1 (it)
CN (1) CN1173650C (it)
DE (1) DE60002651T2 (it)
ES (1) ES2198271T3 (it)
IT (1) IT1311116B1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012168919A1 (en) 2011-06-08 2012-12-13 G.D Societa' Per Azioni Method and filter assembly machine for producing filter-tipped cigarettes

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10206323A1 (de) * 2002-02-14 2003-08-28 Will E C H Gmbh & Co Unterstützungseinrichtung für eine Materialbahn
ITBO20020656A1 (it) * 2002-10-17 2004-04-18 Gd Spa Unita' per la realizzazione di spezzoni di materiale cartaceo.
ITBO20040201A1 (it) * 2004-04-08 2004-07-08 Gd Spa Unita' per l'alimentazione ed il taglio in spezzoni di un nastro di materiale di incarto
JP5976229B2 (ja) * 2012-10-22 2016-08-23 ブリティッシュ アメリカン タバコ （インヴェストメンツ） リミテッドＢｒｉｔｉｓｈ Ａｍｅｒｉｃａｎ Ｔｏｂａｃｃｏ （Ｉｎｖｅｓｔｍｅｎｔｓ） Ｌｉｍｉｔｅｄ タバコ産業で使用する切断装置
GB2531034A (en) * 2014-10-08 2016-04-13 British American Tobacco Investments Ltd Adhesive applicator
CN106006144A (zh) * 2016-07-13 2016-10-12 上海烟草机械有限责任公司 一种纸带切割装置及其作业方法
IT201800001948A1 (it) * 2018-01-30 2019-07-30 Gd Spa Macchina e metodo per la realizzazione di fascette di incarto per l’industria del tabacco
CN111096475A (zh) * 2019-11-21 2020-05-05 南京智晟达自动化科技有限公司 一种能提高卷烟接嘴质量的装备及其控制方法
CN111908244A (zh) * 2020-06-15 2020-11-10 西安交通大学 一种交错断开树脂基纤维复合材料预浸料的装置
CN112077897B (zh) * 2020-08-27 2022-05-27 湖北冠昌胶粘科技有限公司 一种新型可连续加工的高分子膜裁切机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957450A (en) * 1956-12-04 1960-10-25 American Mach & Foundry Filter tip machine
US4943341A (en) * 1982-07-14 1990-07-24 G. D. Societa Per Azioni Device with contrarotating knives for severing filter cigarette uniting bands from webs in automatic filter tipping machines
IT1229428B (it) * 1988-06-11 1991-08-08 Hauni Werke Koerber & Co Kg Dispositivo di taglio.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012168919A1 (en) 2011-06-08 2012-12-13 G.D Societa' Per Azioni Method and filter assembly machine for producing filter-tipped cigarettes

Also Published As

Publication number Publication date
CN1302569A (zh) 2001-07-11
ITBO990584A1 (it) 2001-05-02
ITBO990584A0 (it) 1999-11-02
IT1311116B1 (it) 2002-02-28
CN1173650C (zh) 2004-11-03
EP1097894A1 (en) 2001-05-09
DE60002651D1 (de) 2003-06-18
DE60002651T2 (de) 2004-02-19
ES2198271T3 (es) 2004-02-01

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