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
  • A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
  • A24C5/322—Transporting cigarettes during manufacturing
  • A24C5/326—Transporting cigarettes during manufacturing with lateral transferring means
• • 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
  • A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
  • A24C5/322—Transporting cigarettes during manufacturing
  • A24C5/327—Construction details of the cigarette transport drum

Definitions

• This invention relates to a conveyor for transferring rod-shaped smokers' articles.
• the negative pressure for example, must be greater when the drum rotates at high speed, so as to better oppose the centrifugal force acting on the cigarette sticks or filter plugs, and must be less when the machine is starting up or is running at a low speed for any reason.
• the plant comprises a making machine 3 along which a (at least one) continuous rod 4 of filter material wrapped in a paper material is made in essentially known manner and is fed axially through a cutting station 5 where a cutting device 6 cuts the rod 4 into a sequence of filter plugs 2.
• the filter plugs 2 are delivered axially one after the other to a receiving roller or drum 7 constituting the infeed section of a handling machine 8 comprising, for example, an assembling machine designed to make filter plugs, each consisting of two or more plugs of filter material of different types.
• the drum 7 is rotatable continuously about a horizontal axis A parallel to the feed direction of the continuous rod 4 and is able to receive respective filter plugs 2 fed axially into elongate flutes 9 formed on its cylindrical peripheral surface at equal angular intervals and running parallel to the axis A. Each flute 9 receives and holds within it by suction a filter plug 2.
• the drum 7 transfers the filter plugs 2 in sequence to angularly equispaced suction flutes 10 of a further drum 1 1 , counterrotating relative to the drum 7 and in the same way, the drum 1 1 transfers the filter plugs 2 in sequence to angularly equispaced, peripheral suction flutes 12 formed on a drum 13 which counterrotates relative to the drum 1 1 .
• the filter plugs 2 are subjected to operations by which a finished smokers' article is formed.
• the inlet portion 15 is, in essentially known manner, defined along the leading side of it, relative to the direction of rotation of the drum 7, by an edge which is inclined with respect to a longitudinal axis of extension of the respective flute 9.
• the end portion 16 of each flute 9 has a length similar to that of the inlet portion 15 and a constant transverse dimension substantially equal to the diameter of a filter plug 2 or just greater than the diameter of a filter plug 2.
• the end portion 16 of each flute 9 is delimited, at an end zone of it opposite that which communicates with the inlet portion 15, by a stop member 17 integral with the cylindrical peripheral surface of the mantle 14 of the drum 7.
• the holes 20 and 21 forming part of the rows 18 and 19, respectively, present in the inlet portion 15 and in the end portion 16 of each flute 9 are connected to respective chambers 24 and 25 formed on the peripheral surface of a substantially cylindrical shell 26 running alongside the inside surface of the mantle 14 of the drum 7 ( Figures 5-8).
• Each of the chambers 24 and 25 communicates with one of the reduced cross-section zones 27 and 28 of the internal duct 22', 23' of a respective Venturi-effect ejector 22, 23.
• the intensity of the suction applied through the holes 20 and 21 of the inlet portion 15 and of the end portion 16 of the flutes 9 travelling the arc B may be selected by acting on the valve elements 30, 31 in such a way that the suction applied at the inlet portion 15 is greater than that at the end portion 16 (filter plug 9 slowed down rapidly and stopped slowly) but it is possible to select the opposite option (filter plugs 9 slowed down more progressively and stopped relatively rapidly).
• the choice between these options depends on parameters such as, for example, the type of smokers' articles to be handled by the drum 7 (filter plugs, cigarettes), for each of which one type of handling may be preferable to another taking into account the different fragility of the articles themselves.
• the Venturi- effect ejectors 22 and 23 might be substituted for a single Venturi-effect ejector, whose narrow cross-section zone is connectable to both rows 18 and 19 of holes 20 and 21 .
• the disadvantages typical of the prior art would be avoided, although it would not be possible to adjust the negative pressure applicable through the two rows 18 and 19 of holes 20 and 21 in the flutes 9 independently of each other.

Landscapes

• Cigarettes, Filters, And Manufacturing Of Filters (AREA)
• Specific Conveyance Elements (AREA)
• Belt Conveyors (AREA)
• Veneer Processing And Manufacture Of Plywood (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=48485252

Family Applications (1)

Country Status (3)

Cited By (4)

Citations (4)

• 2013
  • 2013-03-27 IT IT000131A patent/ITBO20130131A1/it unknown
• 2014
  • 2014-03-26 EP EP14716961.9A patent/EP2978324B1/en not_active Not-in-force
  • 2014-03-26 WO PCT/IB2014/060182 patent/WO2014155317A1/en active Application Filing

Patent Citations (4)

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