EP2606753A1 - Unité d'alimentation d'un écoulement ascendant de tabac coupé d'une machine de fabrication de cigarettes double - Google Patents

Unité d'alimentation d'un écoulement ascendant de tabac coupé d'une machine de fabrication de cigarettes double Download PDF

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Publication number
EP2606753A1
EP2606753A1 EP12197156.8A EP12197156A EP2606753A1 EP 2606753 A1 EP2606753 A1 EP 2606753A1 EP 12197156 A EP12197156 A EP 12197156A EP 2606753 A1 EP2606753 A1 EP 2606753A1
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EP
European Patent Office
Prior art keywords
section
channel
tobacco
flow
cross
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
EP12197156.8A
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German (de)
English (en)
Other versions
EP2606753B1 (fr
Inventor
Fausto Mengoli
Massimo Sartoni
Michele Moro
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
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GD SpA
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Publication of EP2606753A1 publication Critical patent/EP2606753A1/fr
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Publication of EP2606753B1 publication Critical patent/EP2606753B1/fr
Not-in-force 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
    • A24C5/18—Forming the rod
    • A24C5/1835—Multiple rod making devices

Definitions

  • the present invention relates to a unit for feeding a rising flow of cut tobacco of a twin-rod cigarette making machine.
  • the prior art feeding units comprise a vertical duct inside of which a flow of air is generated from the bottom upwards.
  • the particles, or fibres, of cut tobacco are fed inside the duct from the bottom and, by means of the rising flow of air, are pushed upwards, in the direction of the outfeed, at which two suction belts are positioned, designed to form respective cords of tobacco.
  • a separator element which subdivides the flow of tobacco particles between one conveyor belt and the other, is interposed between the two conveyor belts.
  • the separator element does not guarantee a correct subdivision of the flow, as the latter reaches the vicinity of the separator element with a non-homogeneous distribution of the particles of tobacco.
  • the aim of this invention is to provide a unit for feeding a rising flow of cut tobacco of a twin-rod cigarette making machine that overcomes the aforementioned drawbacks of the prior art.
  • the aim is achieved by a unit for feeding a rising flow of cut tobacco of a twin-rod cigarette making machine having the features described in the independent claim 1 appended hereto.
  • the numeral 1 denotes in its entirety a unit for feeding a rising flow 2 of cut tobacco.
  • the unit 1 for feeding a rising flow 2 of cut tobacco comprises a channel 4 for feeding the flow 2, the channel 4 being delimited by a first 5 and a second major wall 6, facing each other and substantially vertical, and having a lower cross-section 7 for the tobacco infeed and an upper cross-section 8 for the tobacco outfeed.
  • the upper outfeed cross-section 8 there are two suction belts 9 for transporting the tobacco, separated from each other by a baffle 10.
  • the suction belts 9, preferably parallel to each other, are movable in a direction of motion perpendicular to the plane of Figure 1 and transversal to the axis A of longitudinal extension of the channel 4.
  • the belts 9 are made from fabric material which is permeable to air.
  • the baffle 10 interposed between the two belts 9 faces towards the inside of the channel 4 and it comprises a bar parallel to the longitudinal extension of the suction belts 9.
  • the unit 1 also comprises means 11 for generating the flow 2 designed for conveying the tobacco with a substantially uniform distribution through an intermediate cross-section 12 of the channel 4, which is interposed between the lower cross-section 7 and the upper cross-section 8. Moreover, the walls 5, 6 of the channel 4 converge on each other, from the intermediate cross-section 12 to the upper cross-section 8 and form, more specifically, deflector elements 13 of the flow 2 towards the belts 9. Looking in more detail, according to the preferred embodiment, the channel 4 is defined by a first stretch 14, a second stretch 15 and a third end stretch 16.
  • the channel 4 has, from the bottom upwards, a first stretch 14 with converging walls, a second stretch 15 with diverging walls and a third stretch 16 with walls converging in the direction of the outfeed cross-section 8 of the channel 4.
  • stretch means a a defined portion of the channel 4, and specifically in this description the portions are connected to each other and consecutive in pairs.
  • the third end stretch 16 extends, from the intermediate cross-section 12 to the upper cross-section 8 of the channel 4, for a length substantially equal to one third of the entire length of the channel 4. More specifically, the end stretch 16 of the channel 4 extends for a length, that is, is selected, between 250 mm and 300 mm. Further, the angle of inclination, relative to the longitudinal axis A of the channel 4, of the walls 5, 6 of the end stretch 16 of the channel 4 is, that is, is selected, between 1° and 1 °30', preferably 1 °2'.
  • the means 11 for generating the flow 2 comprise a mechanical needle-type device 17 for launching the cut tobacco located at the inlet to the channel 4, mixing means 18 of the flow 2 of cut tobacco located at the lower cross-section 7 and regulating means 19 designed to direct the rising flow 2 of tobacco.
  • the mechanical launching device 17 comprises a pair of rotary rollers with axes at right angles to the axis A of the channel 4 and operating in conjunction one with another.
  • the first roller 20, the so-called conveyor roller picks up the tobacco fed from a storage hopper 23, whilst the second roller 21, the so-called launching roller, projects the tobacco upwards, inside the channel 4.
  • Each roller 20, 21 has on the relative periphery 20a, 21 a a plurality of needles 22 extending radially from the periphery.
  • the mixing means 18 are formed by jets of compressed air introduced into the channel through each of the major walls 5, 6.
  • the jets are generated by a source 24 of compressed air connected with a respective homogenisation chamber 25 for each wall 5, 6 of the channel 4.
  • the homogenisation chambers 25 in turn communicate with the inside of the channel 4 through respective infeed ducts 26, which lead inside the channel 4 through perforations 27 of the major walls 5, 6 so as to strike the rising flow 2 of tobacco in a direction facing the belts 9. More specifically, the jets can be supplied and regulated independently from one another.
  • the means 19 for regulating the flow 2 of cut tobacco comprise a pair of walls 28 movable inside the channel 4, commonly known by the term "flaps".
  • the walls 28 are movable independently from one another.
  • the means 19 for regulating the flow 2 regulate opportunely the trajectory of the rising flow 2 so as to have an adequate correction, for example, if there is a greater concentration of tobacco on one belt 9 rather than the other.
  • the walls 28 are located at the second diverging stretch 11 of the channel 4.
  • the walls 28 can be located at other stretches of the channel 4.
  • the walls 28 are movable so as to produce a smaller divergence of the second stretch 15 when moved.
  • a manual registration of the position of the walls 28 is possible, either assisted or automatic.
  • the feed unit 1 comprises a chamber 29 for extracting the air present in the channel 4 through the upper outfeed cross-section 8 of the channel 4. More in detail, the chamber 29 creates a negative pressure inside the channel 4 which is able to draw the tobacco, from the bottom upwards, in the direction of the outfeed cross-section 8.
  • the accelerator means 30 are positioned at each of the major walls 5, 6 of the channel 4, close to the outfeed cross-section 8.
  • the accelerator means 30 comprise a plurality of ducts 31 connected to a suction unit 32, positioned outside the channel 4, and leading inside the channel 4 through a plurality of holes 33, made in the walls 5, 6.
  • the external suction unit 32 coincides with the source 24 of compressed air of the mixing means 18, described above.
  • the holes 33, made on the major walls 5, 6 of the channel 4 have inclined axes.
  • the function of the accelerator means 30 is to increase the negative pressure inside the channel 4 regulating and facilitating the rise of the cut tobacco and the feeding to the suction belts 9.
  • the unit 1 also comprises pneumatic means for forming and introducing a flow of air rising along the channel 4.
  • the flow of air the source of which preferably coincides with the source 24 of compressed air, is introduced at the lower cross-section 7 of the channel 4.
  • the tobacco is therefore facilitated in its rising in the direction of the suction belts 9 under the pushing action of the flow of air.
  • the channel 4 has the relative end stretch 16 with converging walls.
  • the flow 2 of tobacco entering the end stretch 16, at the intermediate cross-section 12 is characterised by a homogeneous and uniform distribution of the tobacco.
  • the walls of the end stretch 16 act as deflector elements 13 since they direct the tobacco present in the outermost area 34 of the rising flow 2 towards the innermost area 35 of the flow 2. In this way, a greater concentration of cut tobacco is obtained at the outermost area 34 of the flow 2, whilst the distribution density at the innermost area 35 remains unaltered and equal to that obtained, using the above-mentioned generation means 11, at the intermediate cross-section 12.
  • the cut tobacco fed from the storage hopper 23, is introduced inside the channel 4 by the mechanical needle-type launching device 17.
  • the rising of the tobacco takes place not only by means of the inertia imparted by the launching device 23 but also by means of a negative pressure present inside the channel 4, made using the extraction chamber 29 and the accelerator means 30, which draws the tobacco, from the bottom upwards, in the direction of the outfeed cross-section 8 of the channel 4.
  • the cut tobacco is redistributed, so as to obtain a homogeneous distribution of the flow 2 at the intermediate cross-section 12 of the channel 4.
  • the mixing jets positioned at the infeed of the channel 4, create a re-mixing of the flow 2 which favours a homogeneous distribution of the tobacco at the intermediate cross-section 12.
  • the tobacco firstly reaches the intermediate cross-section 12 with a homogeneous distribution in the flow 2, and then touches the converging walls of the end stretch 16, undergoing a mechanical action of deviation towards the innermost area 35 of the flow 2 and a consequent accumulation with the tobacco innermost to the flow 2.
  • the trajectory of the rising flow 2 is regulated.
  • the trajectory of the flow 2 of tobacco is regulated using the movable walls 28 of the regulating means 19 so as to compensate for any incorrect distribution between the two suction belts 9.
  • the unit 1 allows a better balancing of the quantity of tobacco distributed to each belt 9 limiting the quantity of tobacco which impacts on the separator baffle 10.
  • the feed unit 1 as describes has overall a simple constructional geometry and it is easy and fast to make and install.

Landscapes

  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
EP12197156.8A 2011-12-20 2012-12-14 Unité d'alimentation d'un écoulement ascendant de tabac coupé d'une machine de fabrication de cigarettes double Not-in-force EP2606753B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000734A ITBO20110734A1 (it) 2011-12-20 2011-12-20 Unita' di alimentazione di un flusso ascensionale di tabacco trinciato di una macchina confezionatrice di sigarette a doppio baco.

Publications (2)

Publication Number Publication Date
EP2606753A1 true EP2606753A1 (fr) 2013-06-26
EP2606753B1 EP2606753B1 (fr) 2016-08-17

Family

ID=45809397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12197156.8A Not-in-force EP2606753B1 (fr) 2011-12-20 2012-12-14 Unité d'alimentation d'un écoulement ascendant de tabac coupé d'une machine de fabrication de cigarettes double

Country Status (2)

Country Link
EP (1) EP2606753B1 (fr)
IT (1) ITBO20110734A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11154069B2 (en) 2015-11-20 2021-10-26 Upfield Europe B.V. Process for preparing fat continuous emulsions containing protein
US11154070B2 (en) 2015-11-20 2021-10-26 Upfield Europe B.V. Process for preparing fat continuous emulsions low in fat
US12075793B2 (en) 2015-11-20 2024-09-03 Upfield Europe B.V. Process for preparing fat continuous emulsions

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2077568A (en) * 1980-05-26 1981-12-23 Gd Spa Simultaneous reproduction of two continuous cigarette rods
DE3835335A1 (de) * 1987-10-20 1989-05-03 Gd Spa Vorrichtung zur zufuhr von tabakstroemen zu einer zigaretten-fertigungsmaschine
GB2240026A (en) * 1990-01-18 1991-07-24 Koerber Ag Making plural tobacco tiller streams
GB2255268A (en) * 1991-04-30 1992-11-04 Koerber Ag Method of and apparatus for simultaneously producing two continuous tobacco streams
DE4136470A1 (de) * 1991-11-06 1993-05-13 Hauni Werke Koerber & Co Kg Verfahren und vorrichtung zum gleichzeitigen herstellen von zwei endlos-tabakstraengen fuer zigaretten oder dergleichen
GB2271921A (en) * 1992-10-28 1994-05-04 Gd Spa Method of simultaneously producing two continuous cigarette rods
EP1859693A1 (fr) * 2006-05-22 2007-11-28 G.D.S. S.p.A. Confectionneuse de cigarette équipée pour fabriquer simultanément deux tiges de cigarettes continues

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2077568A (en) * 1980-05-26 1981-12-23 Gd Spa Simultaneous reproduction of two continuous cigarette rods
DE3835335A1 (de) * 1987-10-20 1989-05-03 Gd Spa Vorrichtung zur zufuhr von tabakstroemen zu einer zigaretten-fertigungsmaschine
GB2240026A (en) * 1990-01-18 1991-07-24 Koerber Ag Making plural tobacco tiller streams
GB2255268A (en) * 1991-04-30 1992-11-04 Koerber Ag Method of and apparatus for simultaneously producing two continuous tobacco streams
DE4136470A1 (de) * 1991-11-06 1993-05-13 Hauni Werke Koerber & Co Kg Verfahren und vorrichtung zum gleichzeitigen herstellen von zwei endlos-tabakstraengen fuer zigaretten oder dergleichen
GB2271921A (en) * 1992-10-28 1994-05-04 Gd Spa Method of simultaneously producing two continuous cigarette rods
EP1859693A1 (fr) * 2006-05-22 2007-11-28 G.D.S. S.p.A. Confectionneuse de cigarette équipée pour fabriquer simultanément deux tiges de cigarettes continues

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11154069B2 (en) 2015-11-20 2021-10-26 Upfield Europe B.V. Process for preparing fat continuous emulsions containing protein
US11154070B2 (en) 2015-11-20 2021-10-26 Upfield Europe B.V. Process for preparing fat continuous emulsions low in fat
US12075793B2 (en) 2015-11-20 2024-09-03 Upfield Europe B.V. Process for preparing fat continuous emulsions

Also Published As

Publication number Publication date
EP2606753B1 (fr) 2016-08-17
ITBO20110734A1 (it) 2013-06-21

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