EP3829838B1 - Dispositif et méthode pour la découpe d'une bande dans une pluralité de bandes connectées, dispositif et methode pour la production d'une tige de tabac - Google Patents

Dispositif et méthode pour la découpe d'une bande dans une pluralité de bandes connectées, dispositif et methode pour la production d'une tige de tabac Download PDF

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Publication number
EP3829838B1
EP3829838B1 EP19762768.0A EP19762768A EP3829838B1 EP 3829838 B1 EP3829838 B1 EP 3829838B1 EP 19762768 A EP19762768 A EP 19762768A EP 3829838 B1 EP3829838 B1 EP 3829838B1
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EP
European Patent Office
Prior art keywords
cutting roller
cutting
blades
strips
intermittent
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Active
Application number
EP19762768.0A
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German (de)
English (en)
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EP3829838A1 (fr
Inventor
Steffen Peters
Stefan Malek
Sven Stoffels
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.)
Koerber Technologies GmbH
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Koerber Technologies GmbH
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Publication date
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Publication of EP3829838A1 publication Critical patent/EP3829838A1/fr
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    • 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
    • B26D1/25—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 non-circular cutting member
    • B26D1/34—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 non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—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 non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B26D1/405—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 non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member for thin material, e.g. for sheets, strips or the like
    • 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
    • A24C5/18—Forming the rod
    • A24C5/1828—Forming the rod by cutting tobacco sheet material

Definitions

  • the invention relates to a separating device for separating a flat web into a plurality of strips, comprising a first cutting roller which is rotatable about a first cutting roller axis, and a second cutting roller which is rotatable about a second cutting roller axis parallel to the first, wherein the first and second cutting rollers each comprise a plurality of blades which interact with one another.
  • the invention further relates to a device for producing a rod in the tobacco processing industry, comprising such a separating device.
  • the invention further relates to a method for separating a flat web into a plurality of strips, in which the flat web is separated with a separating device comprising a first cutting roller which rotates about a first cutting roller axis and a second cutting roller which rotates about a second cutting roller axis parallel to the first, wherein the first and the second cutting roller each comprise a plurality of blades which interact with one another.
  • the invention relates to a method for producing a A strand in the tobacco processing industry in which a flat web is separated using the aforementioned process.
  • a device for producing a strand of reconstituted tobacco material which comprises a separating device for separating a flat web of reconstituted tobacco material, is known, for example, from DE 1 954 036
  • the flat sheet is cut into parallel strips using a disc knife cutting device.
  • the strips are then gathered into a strand and covered with a covering.
  • the covered strand is cut into pieces of predetermined length so that rod-shaped articles can be produced.
  • a separating device for separating a flat web into a plurality of strips, comprising a first cutting roller which is rotatable about a first cutting roller axis, and a second cutting roller which is rotatable about a second axis parallel to the first Cutting roller axis is rotatable, wherein the first and the second cutting roller each comprise a plurality of blades which interact with one another, wherein this separating device is developed in that the first and/or the second cutting roller are designed as intermittent cutting rollers, wherein all blades of the intermittent cutting roller each comprise at least one recess which interrupts a cutting edge of the blade, wherein the recesses in the blades of the intermittent cutting roller are arranged along a helix and this helix lies in a cylinder jacket spanned by the cutting edges of the blades and the axis of the helix coincides with the cutting roller axis of the intermittent cutting roller.
  • a "recess” is generally understood to mean an interruption, intermittent area or groove which is made in the corresponding blade in such a way that it interrupts the cutting edge of the blade.
  • the recess can be semicircular, trapezoidal, rectangular or of a different design.
  • a "helix” is understood to mean a helical line.
  • a helix has a constant pitch.
  • the recesses arranged along the helix or helical line are arranged, for example, in such a way that the helix always runs through the middle of the recesses. It is of course also possible to choose a different reference point for the recesses for alignment with the helix, for example a start or end point of the respective recesses.
  • the flat web is advantageously separated into a large number of strips, which are connected to one another with webs.
  • the webs remaining between the strips are the result of the interruptions in the blades.
  • the flat sheet is, for example, a flat sheet made of reconstituted tobacco material or PLA film.
  • the separating device is advantageously further developed in that the blades of the first and the second cutting roller overlap in a cutting area and the cutting edges of the blades of the first cutting roller and the cutting edges of the blades of the second cutting roller in the cutting area are spaced apart from one another by a cutting depth in a direction of the shortest connection between the first and the second cutting roller axis, wherein the recesses have a depth measured from the cylinder jacket in the radial direction that is greater than the cutting depth.
  • the depth of the recesses is greater than the cutting depth plus an assumed material thickness of the flat track.
  • the depth of the recesses is measured between the cylinder shell spanned by the cutting edges, viewed in the radial direction, and up to a bottom of the recesses.
  • the separating device ensures that the intermittent cutting roller does not cut through the flat web.
  • the flat web is received in the area of the recess where the crossbar remains and is not caught by the blade of the opposite cutting roller.
  • the separating device is further developed in particular in that the recesses are arranged in such a way that a straight line in the cylinder jacket intersects exactly two recesses.
  • the straight line lies parallel to the cutting roller axis.
  • a first recess in a first blade and a second recess in a directly adjacent second blade are arranged in such a way that the straight line running parallel to the cutting roller in the cylinder jacket intersects the first and second recess.
  • the straight line intersects, for example, an end point of the first recess and a start point of the third recess, with the start and end points being considered in the circumferential direction of the cylinder.
  • This arrangement of the recesses ensures that at every length position a strip is connected to the two adjacent strips. This applies with the exception of the edge strips. The connection to the adjacent strips is therefore minimal and has no influence on the mechanical properties of the strand formed from the strips. At the same time, it can be ensured that a strip that falls out of the process as a result of a strip breaking can be brought back into the process.
  • the separating device is further developed in that the recesses in the blades of the intermittent cutting roller are arranged along exactly one helix or along several helices.
  • the object is further achieved by a device for producing a strand in the tobacco processing industry, said device comprising a separating device according to one or more of the aforementioned embodiments, and further by a strand forming unit which is designed to form a strand from the plurality of strips.
  • the device for producing a strand has the same or similar advantages as those already mentioned with regard to the separating device.
  • the device is particularly advantageous in that it can provide a very reliable process in which even if a single strip breaks, it can be fed back into the strand process within a very short time.
  • the object is further achieved by a method for separating a flat web into a plurality of strips, in which the flat web is separated with a separating device comprising a first cutting roller which rotates about a first cutting roller axis and a second cutting roller which rotates about a second cutting roller axis parallel to the first, wherein the first and the second cutting roller each comprise a plurality of blades which interact with one another, wherein the method is further developed in that the flat web is separated into individual strips which are each connected to a directly adjacent strip via at least one transverse web, in that the first and/or the second cutting roller are designed as intermittent cutting rollers and all blades of the intermittent cutting roller each comprise at least one recess which interrupts a cutting edge of the blade, wherein the recesses in the blades of the intermittent cutting roller are arranged along a helix and this helix lies in a cylinder jacket spanned by the cutting edges of the blades and the axis of the helix coincides with the cutting roller axis of the intermittent
  • the method for separating the flat web has the same or similar advantages as those already mentioned with regard to the separating device, so that repetition will be avoided.
  • the object is further achieved by a method for producing a rod in the tobacco processing industry, in which a flat web is separated into a plurality of interconnected strips using a method according to the aforementioned embodiment and a rod is formed from the plurality of strips using a rod forming unit.
  • This method of producing the strand is very robust and allows a highly reliable and continuous process to be carried out.
  • strips broken during processing can also be fed back into the process and made available to the strand forming unit.
  • Embodiments of the invention may fulfill individual features or a combination of several features.
  • Fig.1 shows a device 2 for producing a strand 4 of the tobacco processing industry.
  • a flat web 6 is unrolled from a reel 8.
  • the flat web 6 is a flat web made of reconstituted tobacco material or PLA film.
  • a feed device 10 is provided in which the reel 8 is received.
  • the flat web 6 is fed to a separating device 12 included in the device 2.
  • the separating device 12 is designed to separate the flat web 6 into a plurality of strips 14.
  • the strips 14 extend in a strip plane. They are arranged parallel to one another and next to one another in this strip plane, with the flat sides of the strips 14 lying in the strip plane.
  • the strip plane is in the representation of Fig.1 oriented perpendicular to the paper plane.
  • a large number of manufactured strips 14 are indicated in a schematic representation, whereby in this detailed representation the strip plane is tilted into the paper plane.
  • the strand 4 is formed from the plurality of strips 14.
  • the strand formation takes place, for example, in a format channel 22, which is indicated schematically.
  • the strand 4 can be cut into individual rod-shaped segments 24 of a desired length. These can, as in Fig.1 indicated with an arrow, for further processing.
  • the separating device 12 comprises a first cutting roller 30, which is mounted so that it can rotate about a first cutting roller axis 32. It also comprises a second cutting roller 34, which is mounted so that it can rotate about a second cutting roller axis 36.
  • the first and second cutting rollers 30, 34 each comprise a plurality of blades, wherein the blades of different cutting rollers 30, 34 interact with one another. The interaction of the blades of the first cutting roller 30 with those of the second cutting roller 34 separates the flat web 6 into the plurality of strips 14.
  • the first cutting roller 30 or the second cutting roller 34 or both cutting rollers are designed as intermittent cutting rollers.
  • the design of the separating device 12 with at least one intermittent cutting roller ensures that a large number of strips 14 are produced, which are connected to one another with crossbars.
  • Fig.2 shows a perspective view of an intermittent cutting roller 40.
  • This comprises a plurality of blades 42, of which only some are provided with reference numerals for reasons of clarity.
  • the blades 42 which are disk knives and which are oriented in an axial direction A parallel to a rotation axis of the intermittent cutting roller 40, there are grooves in which the blades of the other cutting roller engage.
  • the width of the grooves determines the strip width of the strips 14, which are provided with the separating device 12.
  • the axis of rotation of the intermittent cutting roller 40 coincides with the first or second cutting roller axis 32, 36, depending on whether the first cutting roller 30 or the second cutting roller 34 is designed as an intermittent cutting roller 40.
  • the blades 42 of the intermittent cutting roller 40 are each provided with at least one recess 44. Again, for reasons of clarity, the recesses 44 are provided with reference numerals for only some of the blades 42.
  • the recess 44 interrupts a cutting edge of the respective blade 42, so that the flat web 6 is not cut at the position where the recess 44 is located.
  • the recesses 44 in the blades 42 of the intermittent cutting roller 40 are arranged along a helix.
  • the recesses 44 in the blades 42 of the intermittent cutting roller 40 are Fig.2 shown intermittent cutting roller 40 is arranged along two helices.
  • a first helix 461 runs from a central point from bottom to top with a constant gradient ascending to the first recess 441 in the uppermost blade 421.
  • a second helix 462, which is also indicated in dashed line, runs from the in Fig.2 invisible back of the intermittent cutting roller 40 up to the second recess 442 of the uppermost blade 421.
  • the helices 461, 462 lie in a cylinder jacket spanned by the cutting edges of the blades 42 of the intermittent cutting roller 40.
  • the axes of the helices 461, 462 coincide with the cutting roller axis, which corresponds to the first or second cutting roller axis 32, 36, depending on whether the first cutting roller 30 or the second cutting roller 34 is designed as an intermittent
  • the separating device 12 is, for example, equipped such that the blades 42 of the first and second cutting rollers 30, 34 overlap in a cutting area and the cutting edges of the blades 42 of the first cutting roller 30 and the cutting edges of the blades 42 of the second cutting roller 34 in this cutting area are spaced apart from one another by a cutting depth in a direction of the shortest connection between the two cutting roller axes 32, 36.
  • the first cutting roller 30 and the second cutting roller 34 engage with one another by this cutting depth.
  • the recesses 44 in the intermittent cutting roller 40 have a depth, which is measured in the radial direction from the cylinder jacket to the bottom of the recess 44, which is greater than this cutting depth.
  • Fig.3 shows a plan view of the surface of the intermittent cutting roller 40, wherein the surface is in the paper plane of Fig.3
  • Fig.4 shows a top view of the surface of the intermittent cutting roller 40.
  • the recesses 44 are arranged on the intermittent cutting roller 40 in such a way that a straight line lying in the cylinder jacket spanned by the cutting edges of the blades 42 intersects exactly two recesses.
  • This is exemplary for a first straight line 481, shown in a dash-dotted line, and for a second straight line 482, shown in a dotted line, in Fig.4 shown.
  • the first straight line 481 intersects the second recess 442 of the uppermost blade 421 in the middle.
  • a third recess 443, which is set into the lowermost blade 422 the first straight line 481 no longer intersects the third recess 443 at a starting or corner point.
  • the second straight line 482 is tangent to an end point of the fourth recess 444, intersects the fifth recess 445 in the middle and is tangent to the sixth recess 446 at a starting point.
  • This arrangement of the recesses 44 ensures that at each longitudinal position of the plurality of strips 14, apart from the edge strips, there is a strip which is connected to the two adjacent strips 14 via crossbars. Due to the lack of two neighbors, the edge strips are only connected to the one adjacent strip 14. The mechanical properties of the strand made up of the plurality of strips 14 are not affected by the crossbars. It can still be treated advantageously like a strand made up of a plurality of completely separate strips.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Claims (7)

  1. Dispositif de découpe (12) pour découper une bande plate (6) en une pluralité de bandes (14), comprenant un premier rouleau de coupe (30) qui est apte à tourner autour d'un premier axe (32) de rouleau de coupe et un deuxième rouleau de coupe (34) qui est apte à tourner autour d'un deuxième axe (36) de rouleau de coupe parallèle au premier, les premier et deuxième rouleaux de coupe (30, 34) comprenant chacun une pluralité de lames (42) qui interagissent les unes avec les autres, caractérisé en ce que le premier et/ou le deuxième rouleau de coupe (30, 34) sont/est conçu(s) sous forme de rouleaux de coupe intermittents (40), toutes les lames (42) du rouleau de coupe intermittent (40) comprenant chacune au moins un évidement (44) qui interrompt un bord tranchant de la lame (42), les évidements (44) dans les lames (42) du rouleau de coupe intermittent (40) étant aménagés le long d'une hélicoïde (461, 462) et cette hélicoïde (461, 462) étant située dans une enveloppe cylindrique couverte par les bords tranchants des lames (42), et l'axe de l'hélicoïde (461, 462) coïncidant avec l'axe (32, 36) de rouleau de coupe du rouleau de coupe intermittent (40).
  2. Dispositif de découpe (12) selon la revendication 1, caractérisé en ce que les lames (42) des premier et deuxième rouleaux de coupe (30, 34) se chevauchent dans une zone de coupe et en ce que les bords tranchants des lames (42) du premier rouleau de coupe (30) et les bords tranchants des lames (42) du deuxième rouleau de coupe (34) sont espacés les uns des autres d'une profondeur de coupe dans la zone de coupe dans une direction de la liaison la plus courte entre le premier et le deuxième axe de rouleau de coupe (32, 36), les évidements (44) présentant une profondeur, mesurée à partir de l'enveloppe cylindrique dans la direction radiale, qui est supérieure à la profondeur de coupe.
  3. Dispositif de découpe (12) selon la revendication 1 ou la revendication 2, caractérisé en ce que les évidements (44) sont aménagés de telle sorte qu'une droite située dans l'enveloppe cylindrique coupe exactement deux évidements (44).
  4. Dispositif de découpe (12) selon l'une des revendications 1 à 3, caractérisé en ce que les évidements (44) sont aménagés dans les lames (42) du rouleau de coupe intermittent (40) le long d'exactement une hélicoïde ou le long de plusieurs hélicoïdes (461, 462).
  5. Dispositif (2) pour la fabrication d'une tige (4) de l'industrie de transformation du tabac, comprenant un dispositif de découpe (12) selon l'une des revendications 1 à 4 et une unité (20) de formation de tige qui est adaptée pour former une tige (4) à partir de la pluralité de bandes (14).
  6. Procédé de découpe d'une bande plate (6) en une pluralité de bandes (14), la bande plate (6) étant découpée par un dispositif de découpe (12) comprenant un premier rouleau de coupe (30) tournant autour d'un premier axe (32) de rouleau de coupe et un deuxième rouleau de coupe (34) tournant autour d'un deuxième axe (36) de rouleau de coupe parallèle au premier, les premier et deuxième rouleaux de coupe (30, 34) comprenant chacun une pluralité de lames (42) qui interagissent les unes avec les autres, caractérisé en ce que la bande plate (6) est divisée en bandes individuelles (14) dont chacune est reliée à une bande (14) directement adjacente par l'intermédiaire d'au moins une bande transversale, en ce que le premier et/ou le deuxième rouleaux de coupe (30, 34) sont/est réalisé(s) sous forme de rouleaux de coupe intermittents (40) et toutes les lames (42) du rouleau de coupe intermittent (40) comprennent chacune au moins un évidement (44) qui interrompt un bord tranchant de la lame (42), les évidements (44) étant aménagés dans les lames (42) du rouleau de coupe intermittent (40) le long d'une hélicoïde (461, 462) et cette hélicoïde étant située dans une enveloppe cylindrique couverte par les bords tranchants des lames (42), et l'axe de l'hélicoïde (461, 462) coïncidant avec l'axe (32, 36) de rouleau de coupe du rouleau de coupe intermittent (40).
  7. Procédé de fabrication d'une tige (4) de l'industrie de transformation du tabac, dans lequel, avec un procédé selon la revendication 6, une bande plate (6) de matériau de tabac reconstitué est découpée en une pluralité de bandes (14) reliées entre elles, et une tige (4) est formée à partir de la pluralité de bandes (14) au moyen d'une unité (20) de formation de tiges.
EP19762768.0A 2018-09-05 2019-09-02 Dispositif et méthode pour la découpe d'une bande dans une pluralité de bandes connectées, dispositif et methode pour la production d'une tige de tabac Active EP3829838B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018121618.1A DE102018121618A1 (de) 2018-09-05 2018-09-05 Trennvorrichtung und Verfahren zum Auftrennen einer Flachbahn in eine Vielzahl von verbundenen Streifen sowie Vorrichtung und Verfahren zum Herstellen eines Strangs
PCT/EP2019/073307 WO2020048907A1 (fr) 2018-09-05 2019-09-02 Dispositif de séparation et procédé de séparation d'une bande plate en une pluralité de rubans reliés, ainsi que dispositif et procédé de fabrication d'un brin

Publications (2)

Publication Number Publication Date
EP3829838A1 EP3829838A1 (fr) 2021-06-09
EP3829838B1 true EP3829838B1 (fr) 2024-05-22

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EP19762768.0A Active EP3829838B1 (fr) 2018-09-05 2019-09-02 Dispositif et méthode pour la découpe d'une bande dans une pluralité de bandes connectées, dispositif et methode pour la production d'une tige de tabac

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Country Link
EP (1) EP3829838B1 (fr)
CN (1) CN112601643B (fr)
DE (1) DE102018121618A1 (fr)
WO (1) WO2020048907A1 (fr)

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IT202200012925A1 (it) * 2022-06-20 2023-12-20 Gd Spa Rullo per la separazione di un nastro in una pluralita’ di strisce idonee alla realizzazione di un articolo dell’industria del tabacco
WO2024200077A1 (fr) * 2023-03-24 2024-10-03 Philip Morris Products S.A. Dispositif et procédé d'affaiblissement d'une feuille de substrat de génération d'aérosol pour un composant d'article de génération d'aérosol

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WO2020048907A1 (fr) 2020-03-12
CN112601643B (zh) 2023-01-03
EP3829838A1 (fr) 2021-06-09
CN112601643A (zh) 2021-04-02
DE102018121618A1 (de) 2020-03-05

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