|Publication number||US20060169295 A1|
|Application number||US 10/546,262|
|Publication date||Aug 3, 2006|
|Filing date||Feb 13, 2004|
|Priority date||Feb 20, 2003|
|Also published as||CN1750766A, DE602004002095D1, DE602004002095T2, EP1596674A1, EP1596674B1, WO2004073426A1|
|Publication number||10546262, 546262, PCT/2004/497, PCT/IB/2004/000497, PCT/IB/2004/00497, PCT/IB/4/000497, PCT/IB/4/00497, PCT/IB2004/000497, PCT/IB2004/00497, PCT/IB2004000497, PCT/IB200400497, PCT/IB4/000497, PCT/IB4/00497, PCT/IB4000497, PCT/IB400497, US 2006/0169295 A1, US 2006/169295 A1, US 20060169295 A1, US 20060169295A1, US 2006169295 A1, US 2006169295A1, US-A1-20060169295, US-A1-2006169295, US2006/0169295A1, US2006/169295A1, US20060169295 A1, US20060169295A1, US2006169295 A1, US2006169295A1|
|Original Assignee||Fiorenzo Draghetti|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (19), Classifications (4), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to a device for applying filters to cigarettes, and in particular to a device by which cigarettes and filters are joined together with gummed tipping papers.
Conventionally, filters are applied to cigarettes by machines referred to as filter tip attachments, in a succession of steps briefly described below.
Cigarettes are ordered in pairs, with the two cigarettes of each pair axially aligned and a filter plug double the length of a tip for one cigarette interposed between them in end-to-end contact, likewise axially aligned. The group or assembly made up of the single cigarettes and the filter plug is joined permanently by means of a gummed tipping paper wrapped around the filter plug and overlapping each of the corresponding cigarette ends by about three millimetres.
According to prior art practice, these assembling and joining steps can be brought about on the surface of a conveying drum, onto which the aforementioned assemblies and the gummed papers are directed, in an operation whereby each assembly is rolled against a relative paper. The rolling action is induced along a passage delimited on the one hand by the drum and on the other by a fixed plate of arched profile that combines with the outer surface of the drum to create a rolling channel.
It happens with this type of method that when given operating speeds are exceeded by the filter tip attachment, cigarettes entering the rolling channel at an angular velocity of zero, referred to their own axes, are accelerated to a relatively high speed of rotation and subjected consequently to high stresses tending to spoil the cigarettes irreparably, with the loss of tobacco particles from their ends.
Employing a different method also embraced by the prior art, the rolling channel is created between the drum on the one hand, and on the other, a belt driven at a speed different to that of the drum and embodied usually in a flexible and resilient material. In this instance, however, the belt material tends to wear rapidly.
The object of the present invention is to provide a device for applying filters to cigarettes that will be unaffected by the drawbacks typical of prior art devices as described above.
The stated object is realized in a device according to the present invention for applying filters to cigarettes, of which the characterizing features are recited in claim 1 appended.
The invention will now be described in detail, by way of example, with the aid of the accompanying drawings, in which:
Positioned in close proximity to the roller 9, downstream of the transfer station 7, is a flexible rolling conveyor 12 that combines with the outer cylindrical surface of the roller 9 to establish a rolling channel 13. The flexible rolling conveyor 12 is looped around first and second transmission means denoted 14 and 15 of which the first, upstream, comprises a first freely revolving return pulley 16 combining with the flexible conveyor 12 by which it is partly enveloped to create an infeed conveyor 17 preceding the rolling channel 13, whilst the second, downstream, comprises a second power driven return pulley 18 and, rigidly and concentrically associated with the pulley, a take-up roller 19 of which the periphery affords a plurality of recesses 20 placed to receive the assemblies 4 emerging from the rolling channel 13, each with a tipping paper 11 wrapped around the double filter plug 6 and the cigarettes 5 and denoted 4 a. The pulley 18 and roller 19 thus constitute an outfeed and take-up conveyor 21.
In operation, the peripheral speed of the conveying roller 9 is greater than the speed of the flexible conveyor 12 along the channel 13, thereby inducing the rolling action.
Also shown in
As discernible from the drawings, the outside face of the flexible conveyor 12, which can be fashioned as a web or belt of resilient and flexible material, is furnished with a plurality of rigid cladding elements 23 consisting, as illustrated in
In the preferred embodiment of
With reference in particular to
The function of the magnetic elements 30 is to interact with the cleats 24 and with the fastening means 25 and thereby attract the flexible conveyor 12 along the length of the rolling channel 13 in such a way as to maintain the correct position of the conveyor 12 relative to the conveying roller 9, as described above.
The guiding and locating means 29 comprise a plurality of freely revolving wheels 33 rotatable about axes parallel to the axis of the conveying roller 9 and offered in contact to the inside face of the flexible conveyor 12.
In the example of
As illustrated in
In addition, every second cleat 24 of the rolling surface, in the example illustrated, is furnished along the edge located downstream in the direction followed by the conveyor 12 along the channel 13, with a rib or lip 39 of which the function is to interact positively with each assembly 4 directed into the rolling channel 13 so as to initiate the rolling step brought about along the channel 13.
In the example of
Moreover, and with protection likewise in mind, the device 2 according to the invention is equipped with two guards 41, one only of which visible in
In the example of
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3137302 *||Sep 20, 1961||Jun 16, 1964||Hauni Werke Koerber & Co Kg||Device for rolling a connector sheet around the butting points of cigarettes and filters|
|US4505280 *||May 20, 1983||Mar 19, 1985||Sasib S.P.A.||Device for wrapping a junction band around a pair of cigarettes|
|US6390099 *||Dec 14, 1999||May 21, 2002||Hauni Maschinenabau Ag||Apparatus for convoluting strips around groups of coaxial rod-shaped articles|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7740019||Aug 2, 2006||Jun 22, 2010||R.J. Reynolds Tobacco Company, Inc.||Equipment and associated method for insertion of material into cigarette filters|
|US7836897||Oct 5, 2007||Nov 23, 2010||R.J. Reynolds Tobacco Company||Cigarette having configured lighting end|
|US8171941||Feb 26, 2007||May 8, 2012||R. J. Reynolds Tobacco Company||Cigarette customization apparatus and associated method|
|US8464726||Aug 24, 2009||Jun 18, 2013||R.J. Reynolds Tobacco Company||Segmented smoking article with insulation mat|
|US8627825||Apr 15, 2010||Jan 14, 2014||R.J. Reynolds Tobacco Company||Method for insertion of material into cigarette filters|
|US8760508||Jan 13, 2010||Jun 24, 2014||R.J. Reynolds Tobacco Company||Filtered smoking article inspection system, and associated method|
|US8831764||Oct 17, 2011||Sep 9, 2014||R. J. Reynolds Tobacco Company||Cigarette package coding system and associated method|
|US8839799||May 6, 2010||Sep 23, 2014||R.J. Reynolds Tobacco Company||Segmented smoking article with stitch-bonded substrate|
|US8950407||Mar 18, 2011||Feb 10, 2015||R.J. Reynolds Tobacco Company||Degradable adhesive compositions for smoking articles|
|EP2494875A2||Aug 2, 2007||Sep 5, 2012||R.J. Reynolds Tobacco Company||Filtered cigarette possessing tipping material|
|WO2011019646A1||Aug 9, 2010||Feb 17, 2011||R.J. Reynolds Tobacco Company||Degradable filter element|
|WO2011060008A1||Nov 10, 2010||May 19, 2011||R. J. Reynolds Tobacco Company||Filter element comprising smoke-altering material|
|WO2012003092A1||Jun 15, 2011||Jan 5, 2012||R.J. Reynolds Tobacco Company||Degradable filter element for smoking article|
|WO2012012053A1||Jun 16, 2011||Jan 26, 2012||R.J. Reynolds Tobacco Company||Biodegradable cigarette filter|
|WO2012166302A2||May 8, 2012||Dec 6, 2012||R.J. Reynolds Tobacco Company||Coated paper filter|
|WO2013019413A2||Jul 18, 2012||Feb 7, 2013||R.J. Reynolds Tobacco Company||Degradable cigarette filter|
|WO2013019616A2||Jul 27, 2012||Feb 7, 2013||R. J. Reynolds Tobacco Company||Plasticizer composition for degradable polyester filter tow|
|WO2013043299A2||Aug 22, 2012||Mar 28, 2013||R.J. Reynolds Tobacco Company||Segmented smoking article with substrate cavity|
|WO2013158323A1||Mar 18, 2013||Oct 24, 2013||R.J. Reynolds Tobacco Company||Method for preparing smoking articles|
|Aug 22, 2005||AS||Assignment|
Owner name: G.D S.P.A., ITALY
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DRAGHETTI, FIORENZO;REEL/FRAME:017693/0060
Effective date: 20050720