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EP3838001A1 - Appareil et procédé de découpe d'articles en forme de tige de l'industrie du tabac - Google Patents

Appareil et procédé de découpe d'articles en forme de tige de l'industrie du tabac Download PDF

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Publication number
EP3838001A1
EP3838001A1 EP19219148.4A EP19219148A EP3838001A1 EP 3838001 A1 EP3838001 A1 EP 3838001A1 EP 19219148 A EP19219148 A EP 19219148A EP 3838001 A1 EP3838001 A1 EP 3838001A1
Authority
EP
European Patent Office
Prior art keywords
rod
article
articles
cutting
circular knives
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.)
Withdrawn
Application number
EP19219148.4A
Other languages
German (de)
English (en)
Inventor
Leszek Sikora
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.)
International Tobacco Machinery Poland Sp zoo
Original Assignee
International Tobacco Machinery Poland Sp zoo
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 International Tobacco Machinery Poland Sp zoo filed Critical International Tobacco Machinery Poland Sp zoo
Priority to EP19219148.4A priority Critical patent/EP3838001A1/fr
Publication of EP3838001A1 publication Critical patent/EP3838001A1/fr
Withdrawn legal-status Critical Current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
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/28—Cutting-off the tobacco rod
    • 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
    • A24C5/01—Making cigarettes for simulated smoking devices
    • 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
    • A24D3/025—Final operations, i.e. after the filter rod forming process
    • A24D3/0254—Cutting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter

Definitions

  • the object of the invention is an apparatus and a method for cutting rod-like articles of the tobacco industry.
  • Products and semi-finished products of the tobacco industry such as finished cigarettes, cigarillos, tobacco rods, filter rods are subjected to various operations in the production process.
  • the products and semi-finished products are filled with tobacco, filter materials and various materials having auxiliary functions, whereas the products and semi-finished products are cut in the production process.
  • An example of the semi-finished product which causes problems during the cutting process is a rod containing tobacco or tobacco foil inside which a metal insert in the form of a plate which is cut of a metal strip is situated.
  • the forces generated when cutting such metal insert as well as any other insert in other products depend on the angular position taken by a product, generally a rod-like article, relative to a circular knife commonly used to cut such articles.
  • the insert may change its position within the article, and in addition it may deform, whereas the deformation is concerned over the entire length of the insert as well as the cutting point. Only the ends of the article are subject to a visual assessment, whereas it is necessary to X-ray the rod in order to assess the deformation inside the article.
  • a problem for the manufacturer is the wear of circular knives which increases when the position of the insert is completely random, as a result of which the knives may be loaded unequally and, in addition, to an extent which is higher than intended by the knife manufacturer.
  • the patent EP2713784B1 discloses an apparatus for cutting rod-like articles into multiple parts wherein the rod-like articles are conveyed in flutes of a drum conveyor along a path of movement situated parallel to the circumferential surface of the drum conveyor, whereas circular knives are attached to several shafts, and the axes of such shafts are situated parallel to the axes of rod-like articles being conveyed and cut.
  • the object of the invention is an apparatus for cutting rod-like articles of the tobacco industry with a non-uniform distribution of the cuttability wherein the rod-like articles are conveyed in flutes of a conveyor along a path of movement transverse to the axis of the rod-like article.
  • the apparatus is characterised in that it comprises a unit of circular knives in shear configuration for cutting and turning the article to a uniform angular orientation, and the conveyor is adapted so that it enables the article to rotate relative to the longitudinal axis of the rod-like article at the time of cutting and turning.
  • the apparatus according to the invention is characterised in that the unit of circular knives in shear configuration is provided with a pair of circular knives with the axes of rotation parallel to the axis of the rod-like article being cut, and with cutting edges formed by conical surfaces and lateral surfaces of the circular knives, whereas the axes of rotation of the circular knives are situated on two sides of the path of movement and the cutting edges of the circular knives are adjacent to each other, and the conical surfaces are situated slantwise to the axis.
  • the apparatus according to the invention is characterised in that the conveyor is adapted so that it holds the rod-like articles in the flutes by means of the vacuum.
  • the apparatus according to the invention is characterised in that the conveyor is adapted so that in order to allow a rotation of the rod-like article at the time of cutting the vacuum supplied to the flute is cut off or reduced, and after the end of the cutting process the vacuum supplied to the flute is turned on or increased.
  • the apparatus according to the invention is further characterised by being provided with at least one circular knife not adjacent to another circular knife for cutting the rod-like article, whereas the axis of rotation of the circular knife is parallel to the axis of the rod-like article being cut, and the cutting surface of the circular knife not adjacent to another circular knife is formed by two conical surfaces.
  • the apparatus according to the invention is characterised by being provided with a station checking the quality of the rod-like articles or the cut parts of the rod-like articles.
  • the apparatus according to the invention is characterised in that on the path of movement of the rod-like articles as first in the direction of movement of the rod-like articles there is situated the pair of the circular knives adjacent to each other, as next there are situated the circular knives not adjacent to other circular knives or the station checking the quality of the cut rod-like articles.
  • the apparatus according to the invention is characterised in that the conveyor is a drum conveyor.
  • the apparatus according to the invention is characterised in that the drum conveyor comprises two coaxially mounted drums, whereas the drum has the form of a ring and is attached to at least three rollers.
  • the apparatus according to the invention is characterised in that the drum is driven by means of a gear wheel operating with a gear ring situated inside the drum.
  • the apparatus according to the invention is characterised in that the quality check station arranged to check the quality of the rod-like articles operates in the range of visible, infrared, ultraviolet radiation or in the range of X-ray waves.
  • the object of the invention is also a method for cutting rod-like articles the tobacco industry provided with inserts having a hardness greater than the rod-like article's filling material wherein the rod-like articles are conveyed in the flutes of the conveyor along the path of movement transverse to the axis of the rod-like article.
  • the method according to the invention is further characterised in that the rod-like articles are cut and turned by means of the circular knives unit in shear configuration to a uniform angular orientation, whereas at the time of cutting and turning the rod-like articles are held in the flutes, and the article is enabled to rotate relative to the longitudinal axis of the rod-like article.
  • the method according to the invention is characterised in that the rod-like article is held by means of vacuum supplied to the flute of the conveyor, and at the time of cutting the vacuum supplied to the flute is cut off or reduced, and after the end of the cutting process the vacuum supplied to the flute is turned on or increased.
  • the method according to the invention is characterised in that the formed parts are cut by means of the circular knives not adjacent to other circular knives, whereas the axis of rotation of the circular knife is parallel to the axis of the rod-like article being cut.
  • the method according to the invention is characterised in that by means of the quality checking station the quality of the formed parts of the rod-like article is checked.
  • the apparatus for cutting the rod-like articles it is possible to cut any rod-like articles of the tobacco industry, among others such articles in which there are situated inserts, for example metal plates being sections of a metal strip or made of plastics or other materials with a higher hardness then the material filling the rod-like article.
  • inserts for example metal plates being sections of a metal strip or made of plastics or other materials with a higher hardness then the material filling the rod-like article.
  • the circular knives cut through the wrapping material and the filling material enclosing the insert.
  • the resultant forces oppose each other and do not have any influence on the article's position.
  • the forces generated by the circular knives when cutting a flat insert acting on the insert are greater than the force needed to cut the filling material, there is generated a torque which causes the turning of the insert and the entire article at the same time.
  • the use of the apparatus for rod-like articles having a flat insert inside causes that the articles are cut in uniform conditions, i.e. the article is turned so that the insert is positioned parallel to the path of movement of the rod-like article or at a small angle to the path.
  • the variability of the process of cutting with two circular knives adjacent to each other was limited, and the cutting with knives not adjacent to other knives takes place at angular positions of the rod-like articles very similar for respective rod-like articles.
  • the turning of the articles with an insert during the cutting process significantly contributes to an increase of the product quality because the inserts are less deformed after the cutting.
  • an unexpected effect of the uniform angular orientation of the rod-like articles after cutting by means of a circular knives unit in a shear configuration causes that further operations in the production process take place in more advantageous conditions, e.g. quality checking for rod-like articles with a consistent orientation is characterised by a greater measurement accuracy.
  • Fig. 1 shows a fragment of a feeding module of an apparatus for cutting rod-like articles.
  • the rod-like articles should be characterised by a non-uniform (inhomogeneous) cuttability, whereas preferably the rod-like articles are subjected to a random preliminary orientation which causes that the non-uniform cuttability is asymmetrical to the axis determined as a straight line which is equidistant to the edges of the circular knives.
  • Rods containing the filter material and/or auxiliary materials for manufacturing the segment rod for example materials for manufacturing tobacco smoke channels, are supplied to the feeding module.
  • the feeding module comprises a hopper 10 for filter rods, generally for rod-like articles 1, whereas multi-segment rods may be fed to the hopper.
  • the drum conveyor 2 is rotatably mounted at the axis X.
  • the rod-like articles 1 are conveyed in the flutes 3 along a path of movement P which is transverse to the axis K of the rod-like article 1.
  • a path of movement P which is transverse to the axis K of the rod-like article 1.
  • there are disposed circular knives for cutting the rod-like article 1 as first in the direction of movement T there is situated a pair 6 of circular knives comprising two circular knives 6A and 6B adjacent to each other, as second there is situated a circular knife 5 for cutting the parts 1A, 1B formed after cutting the rod-like article 1, whereas it is possible to situate two or more circular knives 5 at one axis of rotation Y.
  • the axis of rotation Y of the circular knife 5 is parallel to the axis K of the parts 1A and 1B formed after cutting the rod-like article 1. Further in the direction of movement T, there may be placed further circular knives 5.
  • the circular knife 6A is situated above the carrier surface 2A of the drum conveyor 2, whereas the circular knife 6B is situated beneath the carrier surface 2A.
  • the circular knives 6A, 6B are disposed so that their axes of rotation Z, Z' are situated on two sides of the path of movement P shown also in Fig. 4 .
  • the circular knives 6A and 6B overlap and by rotating perform the shear-type cutting.
  • the path of movement P passes through an area 6C of overlapping of the adjacent circular knives 6A, 6B.
  • the vacuum is not supplied to the flutes 3.
  • the area 23 of the lack of vacuum is situated between the chambers 21 and 22, the vacuum is not supplied to the flutes 3 at the moment of the start of cutting or before the start of cutting of the rod-like article 1.
  • the lack of vacuum causes that the rod-like article 1 is not held in the flute during the cutting process or due to the time necessary for complete fading of the vacuum is held with a lesser force.
  • the vacuum has a smaller value, which will allow obtaining the effect of reduced force required to hold the rod-like article 1 in the flute 3 at least partially in the area 6C of overlapping of the circular knives 6A, 6B and/or before this area.
  • the drum conveyor 2 may be driven in any way.
  • the drum conveyor 2 comprises two coaxial drums 24 and 25 rotatably mounted at the axis X.
  • the drum 24, 25 has the form of a ring and is attached to at least three rotatable rollers 26 where the roller 26 operates with the groove 30, whereas one of the rollers 26 may be a driving roller. If the rollers 26 are used only as a bearing arrangement for the drum 24, 25, the drum may be driven by a gear wheel 27 operating with a gear ring 28 visible also in the cross-section A-A in Fig. 2 .
  • the pair 6 of circular knives 6A, 6B is situated in a gap 29 between the drums 24, 25.
  • Fig. 3 shows an embodiment in which the belt conveyor 2' is used, whereas the circular knives are disposed in a similar way along the path of movement P as in the first embodiment.
  • the axes of rotation Z, Z' of the circular knives 6A, 6B and the axes of rotation Y of the circular knives 5 are situated horizontally.
  • the apparatus for processing rod-like articles wherein the axes of rotation Z, Z' and Y are situated vertically and, in addition, the conveyor is adapted to hold the rod-like articles also vertically.
  • Fig. 4 shows the pair 6 of the circular knives 6A, 6B in a view in the direction parallel to the axis Z, for the sake of simplification, the path of movement P was shown as rectilinear.
  • the forces generated when cutting with the knives 6A, 6B exerted by the knives on the article 1 being cut will have the same value.
  • Fig. 4 shows the rod-like article containing a flat insert W, whereas the subsequent rod-like articles 1 being fed are oriented in a random way. At the first cutting stage, the forces generated when cutting the filling material 1' have the same value.
  • the force generated when cutting the filling material L, coming from the knife 6A, is marked as F1, the force with the same value, marked as F2, will be exerted on the rod-like article 1' by the knife 6B.
  • the force F1 generates the torque M1 relative to the axis K of the rod-like article 1' in the anticlockwise direction
  • the force F2 generates the torque M2 relative to the axis K of the rod-like article 1' in the clockwise direction
  • the torques M1 and M2 have the same value, therefore the resultant torque produced by the cutting forces will be zero.
  • the force marked as F2 much greater than the force F1 is produced.
  • the difference in value of the forces F1 and F2 results from the difference in the hardness (cuttability) between the insert material W and the filling material L of the rod-like article 1'.
  • the torque M1 relative to the axis K of the rod-like article 1' in the anticlockwise direction
  • the torque M2 in the clockwise direction.
  • the resultant torque M acting on the rod-like article 1' in the clockwise direction will cause a rotation of the rod-like article 1'.
  • the rod-like article 1' will rotate until the moment when the knife 6A comes into contact with the insert W, ultimately, the rod-like article 1' will cease to rotate when the insert W, in this article, is positioned substantially parallel or at a small angle to the path of movement P ( Fig. 6 ).
  • the insert W will not continue to turn the rod-like article 1' because the forces F1 and F2 have the same value.
  • the torques M1 and M2 produced by the forces will also have the same value, the resultant torque equal to zero, thus the rod-like article 1' will not rotate.
  • the rod-like articles 1 containing the insert W will be cut in uniform conditions, i.e. in a uniform angular orientation because they will be positioned in a repeatable manner.
  • the cutting of the rod-like articles with the pair of circular knives (6A, 6B) in a circular arrangement does not automatically guarantee rotation of the rod-like article to a specific angular orientation.
  • the rod-like article made of tobacco may contain a metal insert for tobacco heating, and the rod-like article constituting the filter part may contain an identification wire.
  • the non-uniform cuttability leads to the occurrence of a non-zero torque - however, it is a necessary, but not sufficient condition for obtaining rotation of the rod-like article.
  • the non-uniform cuttability must occur at the cutting point and run in the cutting plane.
  • the asymmetry may be caused by placing an insert with physical properties which are different from the filling's properties, but it may also result from the use of different filling materials distributed lengthwise inside the rod-like article.
  • a further condition is holding the insert in a manner allowing its rotation, i.e. for example in horizontal arrangements of band conveyors it is sufficient to hold the rod-like article in the flute using the force of gravitation, whereas in drum conveyors vacuum is used. In the latter case, the vacuum needs to be reduced or cut off at the time of cutting and turning, which enables the torque to overcome the forces of friction and to turn the article until the moment of equalization of forces produced by the knives and fading of the torque.
  • the cross-section B-B in Fig. 7 marked in Fig.
  • the cutting edge 7A, 7B of the circular knife 6A, 6B is formed by the lateral surface 9A, 9B of the circular knife 6A, 6B and the circumferential conical surface 8A, 8B.
  • the cutting edge 7A, 7B of one circular knife 6A, 6B is situated adjacently to the other circular knife 6A, 6B.
  • the parts 1A, 1B formed as a result of cutting with the circular knives 6A, 6B will be further conveyed in the flutes 3 for cutting with the circular knives 5.
  • Such arrangement of the circular knives is referred to as shear-type arrangement due to the nature of the cutting process which corresponds to the operations of shears.
  • Fig. 8 shows a cross-section of the circular knife 5, whereas he cutting edge 11 of the circular knife 5 not adjacent to another circular knife is formed by two conical surfaces 12A, 12B.
  • the rod-like article 1 is conveyed along the path of movement P in the flute 3 of the drum conveyor 2 in which it is held by means of vacuum, at the time of momentary pressure drop in the area 6C of overlapping of the adjacent circular knives 6A, 6B, the rod-like article 1 is cut into two parts 1A, 1B. It is possible to hold the rod-like article 1 by means of a jacket 30 situated above the carrier surface 2A. After cutting the rod-like article 1, the formed parts 1A, 1B are held by vacuum at the time of further operations of cutting with the circular knives 5, whereas the parts being cut are further conveyed along the path P situated above the carrier surface 2A of the drum conveyor 2.
  • the axes of the rod-like article 1, the parts 1A, 1B and the segments formed by further cutting operations are situated perpendicular to the path of movement P.
  • the rod-like article 1 is to be cut by means of the adjacent circular knives 6A, 6B, and further cutting operations are to be done by means of single knives 5 (knives not adjacent to other knives), whereas it is possible to use the pairs 6 of adjacent circular knives in all cutting operations.
  • the axes Y of the single circular knives 5 as well the axes Z, Z' of the circular knives 6A, 6B are situated parallel to the axis of rotation of the drum conveyor 2.
  • a quality check station arranged to check the quality of the rod-like articles 1 or the rod-like articles cut into the parts 1A and 1B.
  • the quality checking station is marked in Fig. 1 as 31.
  • Such station operates in the range of visible, infrared, ultraviolet radiation or in the range of X-ray waves.
  • the quality check is combined with the function of tracking of the position of defective rod-like articles for the purpose of subsequent rejection of such defective articles.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
EP19219148.4A 2019-12-20 2019-12-20 Appareil et procédé de découpe d'articles en forme de tige de l'industrie du tabac Withdrawn EP3838001A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19219148.4A EP3838001A1 (fr) 2019-12-20 2019-12-20 Appareil et procédé de découpe d'articles en forme de tige de l'industrie du tabac

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19219148.4A EP3838001A1 (fr) 2019-12-20 2019-12-20 Appareil et procédé de découpe d'articles en forme de tige de l'industrie du tabac

Publications (1)

Publication Number Publication Date
EP3838001A1 true EP3838001A1 (fr) 2021-06-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19219148.4A Withdrawn EP3838001A1 (fr) 2019-12-20 2019-12-20 Appareil et procédé de découpe d'articles en forme de tige de l'industrie du tabac

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EP (1) EP3838001A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4215065A3 (fr) * 2022-01-21 2023-10-11 Körber Technologies GmbH Dispositif de manipulation pour articles en forme de tige de l'industrie de traitement du tabac

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3334572A1 (de) 1982-10-15 1984-04-19 Hauni-Werke Körber & Co KG, 2050 Hamburg Vorrichtung zum schneiden von queraxial gefoerderten stabfoermigen artikeln der tabakverarbeitenden industrie
US20050217447A1 (en) * 2004-03-31 2005-10-06 R. J. Reynolds Tobacco Company Slitter device with adjustable blade
EP2713784B1 (fr) 2011-05-23 2016-11-02 International Tobacco Machinery Poland Sp. z o.o. Tête de coupe amovible pour dispositif destiné à distribuer des ensembles segments de filtre
WO2017203241A1 (fr) * 2016-05-27 2017-11-30 British American Tobacco (Investments) Limited Appareil de coupe rotatif

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3334572A1 (de) 1982-10-15 1984-04-19 Hauni-Werke Körber & Co KG, 2050 Hamburg Vorrichtung zum schneiden von queraxial gefoerderten stabfoermigen artikeln der tabakverarbeitenden industrie
US20050217447A1 (en) * 2004-03-31 2005-10-06 R. J. Reynolds Tobacco Company Slitter device with adjustable blade
EP2713784B1 (fr) 2011-05-23 2016-11-02 International Tobacco Machinery Poland Sp. z o.o. Tête de coupe amovible pour dispositif destiné à distribuer des ensembles segments de filtre
WO2017203241A1 (fr) * 2016-05-27 2017-11-30 British American Tobacco (Investments) Limited Appareil de coupe rotatif

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4215065A3 (fr) * 2022-01-21 2023-10-11 Körber Technologies GmbH Dispositif de manipulation pour articles en forme de tige de l'industrie de traitement du tabac

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