EP2607248B1 - Dryer of packets in a line for packaging tobacco products - Google Patents

Dryer of packets in a line for packaging tobacco products Download PDF

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Publication number
EP2607248B1
EP2607248B1 EP12197201.2A EP12197201A EP2607248B1 EP 2607248 B1 EP2607248 B1 EP 2607248B1 EP 12197201 A EP12197201 A EP 12197201A EP 2607248 B1 EP2607248 B1 EP 2607248B1
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EP
European Patent Office
Prior art keywords
packets
conveyor
dryer
housing
dryer according
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.)
Active
Application number
EP12197201.2A
Other languages
German (de)
French (fr)
Other versions
EP2607248A1 (en
EP2607248B2 (en
Inventor
Michele Ferrari
Davide Parazza
Massimo Tugnoli
Stefano Negrini
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GD SpA
Original Assignee
GD SpA
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Publication date
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Application filed by GD SpA filed Critical GD SpA
Priority to PL12197201T priority Critical patent/PL2607248T3/en
Publication of EP2607248A1 publication Critical patent/EP2607248A1/en
Publication of EP2607248B1 publication Critical patent/EP2607248B1/en
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Publication of EP2607248B2 publication Critical patent/EP2607248B2/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
    • B65B19/02—Packaging cigarettes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/002—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for drying glued or sealed packages

Definitions

  • This invention relates to a dryer of packets in a line for packaging tobacco products
  • the packets handled by the dryer according to this invention may consist of packets of cigarettes, to which reference is hereinafter made without thereby limiting the scope of the invention.
  • dryingers which dry the glue interposed between the reciprocally adjacent flaps of the packets.
  • These dryers generally dry the glue during the transport of the packets between the outfeed of a machine for packaging packets or packaging machine, and the infeed of a cellophaning machine designed to enclose the finished packets in wrappers of transparent material.
  • An example of prior art dryers comprises using two smooth belt conveyors, having respective conveying sections which are facing each other and parallel with one another, along which the packets to be dried are passed.
  • a heating plate is associated with each of the conveying sections.
  • a further prior art embodiment uses a rotary turret, equipped with circumferential seats within which the packets are dried during transport. These types of dryers have a number of drawbacks.
  • these dryers are used in packaging lines characterised by high speeds of transit of the packets, in which very short periods of time are available for achieving a correct drying of the glue.
  • the aim of this invention is therefore to provide a dryer of packets wherein the transmission of heat to the packets is made more efficient, allowing a correct and complete drying of the glue without the risk of burning the packets and at the same time allowing a saving from the energy point of view.
  • a further aim of this invention is to provide a dryer of packets which can be used in high speed lines for packaging packets and which is characterised by reduced dimensions.
  • the numeral 1 denotes in its entirety a dryer of packets 2, made according to this invention and operating in a line 3 for packaging tobacco products.
  • the dryer 1 comprises at least one section 4 for transporting packets 2 from a first infeed station 5 to a second outfeed station 6 of the packaging line 3.
  • the first station 5 is formed by the outfeed portion of a machine for packaging packets 2, whilst the second station 6 is formed by the infeed portion of a cellophaning machine for applying transparent overwrapping sheets on the packets 2.
  • the transport and drying section 4 is formed by a first belt conveyor 7 and by a second belt conveyor 8, each having respective active portions 17a, 18a of belt 17, 18, facing each other and spaced at a sufficient distance for allowing the packets 2 to be retained during the transport.
  • the transport and drying section 4 has a substantially horizontal path P and the active portions 17a, 18a of the belts 17, 18 are rectilinear and parallel to each other.
  • the belts 17, 18 are moved by respective rotatable pulleys 15 in different directions about respective horizontal axes, and on each belt 17, 18 there is a plurality of half-housings 9, 10.
  • Each half-housing 9 of the first conveyor 7 is facing and synchronised, in use, with a respective half-housing 10 of the second conveyor 8 in such a way as to form a housing 12 for receiving a respective packet 2.
  • each conveyor 7, 8 are formed by a plurality of wedges 11 integral with the respective belts 17, 18. More specifically, each half-housing 9, 10 of the conveyors 7, 8 is formed by a pair of wedges 11 adjacent to each other.
  • the wedges 11 are made of a thermally insulating material. More specifically, the wedges 11 are made of rubber or the like.
  • the wedges 11 can preferably have, according to an embodiment not illustrated, a substantially trapezoidal profile, so as to facilitate the introduction of the packets 2 in the respective housings 12 upon entry into the dryer 1.
  • the dryer 1 comprises heating means 13, positioned inside each conveyor 7, 8 and designed to generate the heat necessary for drying the packets 2, and more specifically the glue interposed between the flaps, not illustrated, of opposite faces 2a of the packets 2 positioned in contact with the conveyors 7, 8.
  • the heating means 13 extend substantially for the entire length of the transport and drying section 4, and comprise at least one electrical resistance 14.
  • the heating means 13 comprise a single electrical resistance 14 which extends substantially for the entire length of the transport and drying section 4.
  • the heating means 13 comprise a plurality of electrical resistances 14, positioned side by side in succession for forming a set of electrical resistances 14 which extend substantially for the entire length of the transport and drying section 4.
  • Each half-housing 9, 10 is equipped, at a respective lower end 9a, 10a, with a plate 16 made of conductive material, designed to transfer to the packets 2, by conduction, the heat generated by the heating means 13.
  • the plates 16 are made of aluminium or an aluminium alloy.
  • the plates 16 are connected to the belts 17, 18 of the conveyors 7, 8, for example, by at least one screw (not shown).
  • the plates 16 come into contact, in use, with two opposite faces 2a of the packets 2 to be dried, have dimensions at least equal to the dimensions of the faces 2a, and their contact with the faces 2a of the packets 2 is made through respective heating faces 16a having profiles which match with respective profiles of the faces 2a.
  • the profiles of the surfaces 16a are curved towards the inside of the conveying channel of the packets 2, formed by the conveyors 7 and 8.
  • each packet 2 leaving the first station 5 is introduced inside a respective housing 12 formed by the conveyors 7, 8 of the dryer 1.
  • the packet 2 to be dried is retained and transported by the conveyors 7, 8 from the first infeed station 5 to the second outfeed station 6.
  • the packet 2 is heated at the faces 2a positioned in contact with the respective ends 9a, 10a of the half-housings 9, 10 forming the housings 12 of respective packets 2.
  • the faces 2a of the packet 2 are positioned, in particular, in direct contact with the conductive plates 16 integral with the end 9a, 10a of the half-housings 9, 10, the plates 16 transferring to the packet 2, by conduction, the heat generated by the heating means 13 positioned inside each conveyor 7, 8.
  • the packet 2 therefore undergoes, from the first infeed station 5 to the second outfeed station 6, a progressive heating of the faces 2a in contact with the plates 16, in such a way as to dry the glue interposed between the flaps forming the faces 2a of the packet 2.
  • the invention described above allows an efficient closing of the faces 2a of the packet 2 to be performed, reducing the overall dimensions of the dryer 1.
  • conductive plates 16 optimises the transfer of the heat from the heating means 13 to the packet 2.
  • the dryer 1 described above requires a relatively small quantity of heat, and therefore allows a saving to be made from an energy point of view and prevents the risk of burning the faces 2a of the packets 2 to be dried.
  • the dryer 1 has a low structural complexity, which translates into low production costs, and it can also be implemented in existing dryers.

Description

  • This invention relates to a dryer of packets in a line for packaging tobacco products
  • More specifically, the packets handled by the dryer according to this invention may consist of packets of cigarettes, to which reference is hereinafter made without thereby limiting the scope of the invention.
  • The use is known, in lines for packaging cigarettes and tobacco products
  • in general, of devices for drying the packets, usually referred to as "dryers", which dry the glue interposed between the reciprocally adjacent flaps of the packets.
  • These dryers generally dry the glue during the transport of the packets between the outfeed of a machine for packaging packets or packaging machine, and the infeed of a cellophaning machine designed to enclose the finished packets in wrappers of transparent material.
  • An example of prior art dryers (see e.g. document US-A-2006/0207224 ) comprises using two smooth belt conveyors, having respective conveying sections which are facing each other and parallel with one another, along which the packets to be dried are passed.
  • A heating plate is associated with each of the conveying sections.
  • A further prior art embodiment uses a rotary turret, equipped with circumferential seats within which the packets are dried during transport. These types of dryers have a number of drawbacks.
  • Firstly, these dryers are used in packaging lines characterised by high speeds of transit of the packets, in which very short periods of time are available for achieving a correct drying of the glue.
  • For that reason, the prior art dryers require a very long stretch for transport of the packets, and are therefore relatively bulky.
  • Any shortening of the drying stretch to reduce the overall size would result in an increase in the quantity of heat to be transmitted to the packets, with the risk of causing burns and damage.
  • Moreover, these prior art dryers, if equipped with a very long stretch for transport of the packets to prevent damaging the packets, require a high energy consumption.
  • The aim of this invention is therefore to provide a dryer of packets wherein the transmission of heat to the packets is made more efficient, allowing a correct and complete drying of the glue without the risk of burning the packets and at the same time allowing a saving from the energy point of view.
  • A further aim of this invention is to provide a dryer of packets which can be used in high speed lines for packaging packets and which is characterised by reduced dimensions.
  • According to this invention a dryer of packets in a line for packaging tobacco products is provided as described in the appended claims.
  • The dryer of packets according to this invention will now be described with reference to the accompanying drawing which illustrates a schematic side view of a non-limiting embodiment of it.
  • With reference to the drawing, the numeral 1 denotes in its entirety a dryer of packets 2, made according to this invention and operating in a line 3 for packaging tobacco products.
  • The dryer 1 comprises at least one section 4 for transporting packets 2 from a first infeed station 5 to a second outfeed station 6 of the packaging line 3.
  • Purely by way of an example, the first station 5 is formed by the outfeed portion of a machine for packaging packets 2, whilst the second station 6 is formed by the infeed portion of a cellophaning machine for applying transparent overwrapping sheets on the packets 2.
  • The transport and drying section 4 is formed by a first belt conveyor 7 and by a second belt conveyor 8, each having respective active portions 17a, 18a of belt 17, 18, facing each other and spaced at a sufficient distance for allowing the packets 2 to be retained during the transport.
  • The transport and drying section 4 has a substantially horizontal path P and the active portions 17a, 18a of the belts 17, 18 are rectilinear and parallel to each other.
  • The belts 17, 18 are moved by respective rotatable pulleys 15 in different directions about respective horizontal axes, and on each belt 17, 18 there is a plurality of half- housings 9, 10. Each half-housing 9 of the first conveyor 7 is facing and synchronised, in use, with a respective half-housing 10 of the second conveyor 8 in such a way as to form a housing 12 for receiving a respective packet 2.
  • The half- housings 9, 10 of each conveyor 7, 8 are formed by a plurality of wedges 11 integral with the respective belts 17, 18. More specifically, each half- housing 9, 10 of the conveyors 7, 8 is formed by a pair of wedges 11 adjacent to each other.
  • The wedges 11 are made of a thermally insulating material. More specifically, the wedges 11 are made of rubber or the like.
  • The wedges 11 can preferably have, according to an embodiment not illustrated, a substantially trapezoidal profile, so as to facilitate the introduction of the packets 2 in the respective housings 12 upon entry into the dryer 1.
  • The dryer 1 comprises heating means 13, positioned inside each conveyor 7, 8 and designed to generate the heat necessary for drying the packets 2, and more specifically the glue interposed between the flaps, not illustrated, of opposite faces 2a of the packets 2 positioned in contact with the conveyors 7, 8.
  • Preferably, the heating means 13 extend substantially for the entire length of the transport and drying section 4, and comprise at least one electrical resistance 14.
  • According to a first embodiment, the heating means 13 comprise a single electrical resistance 14 which extends substantially for the entire length of the transport and drying section 4.
  • According to a further embodiment, the heating means 13 comprise a plurality of electrical resistances 14, positioned side by side in succession for forming a set of electrical resistances 14 which extend substantially for the entire length of the transport and drying section 4.
  • Each half- housing 9, 10 is equipped, at a respective lower end 9a, 10a, with a plate 16 made of conductive material, designed to transfer to the packets 2, by conduction, the heat generated by the heating means 13. Preferably, the plates 16 are made of aluminium or an aluminium alloy. The plates 16 are connected to the belts 17, 18 of the conveyors 7, 8, for example, by at least one screw (not shown).
  • The plates 16 come into contact, in use, with two opposite faces 2a of the packets 2 to be dried, have dimensions at least equal to the dimensions of the faces 2a, and their contact with the faces 2a of the packets 2 is made through respective heating faces 16a having profiles which match with respective profiles of the faces 2a.
  • According to a possible embodiment, the profiles of the surfaces 16a are curved towards the inside of the conveying channel of the packets 2, formed by the conveyors 7 and 8.
  • In use, each packet 2 leaving the first station 5 is introduced inside a respective housing 12 formed by the conveyors 7, 8 of the dryer 1.
  • Next, the packet 2 to be dried is retained and transported by the conveyors 7, 8 from the first infeed station 5 to the second outfeed station 6.
  • During transport, the packet 2 is heated at the faces 2a positioned in contact with the respective ends 9a, 10a of the half- housings 9, 10 forming the housings 12 of respective packets 2. The faces 2a of the packet 2 are positioned, in particular, in direct contact with the conductive plates 16 integral with the end 9a, 10a of the half- housings 9, 10, the plates 16 transferring to the packet 2, by conduction, the heat generated by the heating means 13 positioned inside each conveyor 7, 8.
  • The packet 2 therefore undergoes, from the first infeed station 5 to the second outfeed station 6, a progressive heating of the faces 2a in contact with the plates 16, in such a way as to dry the glue interposed between the flaps forming the faces 2a of the packet 2.
  • The invention described above allows an efficient closing of the faces 2a of the packet 2 to be performed, reducing the overall dimensions of the dryer 1.
  • Moreover, the use of conductive plates 16 optimises the transfer of the heat from the heating means 13 to the packet 2.
  • At the same time, the dryer 1 described above requires a relatively small quantity of heat, and therefore allows a saving to be made from an energy point of view and prevents the risk of burning the faces 2a of the packets 2 to be dried.
  • Lastly, the dryer 1 has a low structural complexity, which translates into low production costs, and it can also be implemented in existing dryers.

Claims (7)

  1. A dryer of packets in a line for packaging tobacco products comprising at least one section (4) for transporting packets (2) from a first (5) to a second (6) station of the packaging line (3); the section (4) being formed by a first belt conveyor (7) and by a second belt conveyor (8), each having respective active portions (17a, 18a) of belt (17, 18), facing each other and spaced at a sufficient distance for allowing the packets (2) to be retained during the transport; the dryer (1) also comprising heating means (13), positioned inside each conveyor (7, 8) and designed to generate the heat necessary for drying the packets (2); characterised in that each conveyor (7, 8) has on the respective belt (17, 18) a plurality of half-housings (9, 10); each half-housing (9) of the first conveyor (7) facing and synchronised, in use, with a respective half-housing (10) of the second conveyor (8) for forming a housing (12) for receiving a respective packet (2); and each half-housing (9, 10) being equipped, at a respective lower end (9a, 10a), with a plate (16) made of conductive material, designed to transfer to the packages (2), by conduction, the heat generated by the heating means (13).
  2. The dryer according to claim 1, characterised in that the heating means (13) extend substantially for the entire length of the transport section (4).
  3. The dryer according to claim 1 or 2, characterised in that the heating means (13) comprise at least one electrical resistance (14).
  4. The dryer according to any one of claims 1 to 3, characterised in that the half-housings (9, 10) of each conveyor (7, 8) are formed by a plurality of wedges (11) integral with the respective belts (17, 18) of each conveyor (7, 8).
  5. The dryer according to claim 4, characterised in that each half-housing (9, 10) of the conveyors (7, 8) is formed by a pair of wedges (11) adjacent to each other.
  6. The dryer according to any one of the preceding claims, characterised in that the transport and drying section (4) has a substantially horizontal path and the active portions (17a, 18a) of the belts (17, 18) are rectilinear and parallel to each other.
  7. The dryer according to any one of the preceding claims is characterised in that the plates (16) are made of aluminium or an aluminium alloy.
EP12197201.2A 2011-12-22 2012-12-14 Dryer of packets in a line for packaging tobacco products Active EP2607248B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12197201T PL2607248T3 (en) 2011-12-22 2012-12-14 Dryer of packets in a line for packaging tobacco products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000745A ITBO20110745A1 (en) 2011-12-22 2011-12-22 PACKAGE DRIER IN A SMOKE PACKAGING LINE.

Publications (3)

Publication Number Publication Date
EP2607248A1 EP2607248A1 (en) 2013-06-26
EP2607248B1 true EP2607248B1 (en) 2014-06-04
EP2607248B2 EP2607248B2 (en) 2017-03-01

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EP12197201.2A Active EP2607248B2 (en) 2011-12-22 2012-12-14 Dryer of packets in a line for packaging tobacco products

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EP (1) EP2607248B2 (en)
IT (1) ITBO20110745A1 (en)
PL (1) PL2607248T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015114457A1 (en) 2015-08-31 2017-03-02 Sig Technology Ag Apparatus and method for drying packaging

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1719404A (en) * 1925-12-09 1929-07-02 Harry E Townsend Sealing machine
DE2800570A1 (en) † 1978-01-07 1979-07-19 Hauni Werke Koerber & Co Kg MEMORY ARRANGEMENT WITH MULTIPLE RECORDINGS FOR RECORDING A ROW OF OBJECTS
JP3170839B2 (en) † 1992-01-28 2001-05-28 株式会社東京自働機械製作所 Packaging machine sealing device
IT1257636B (en) * 1992-02-03 1996-02-01 Gd Spa OUTLET CONVEYOR FOR CIGARETTES PACKAGING MACHINES IN RIGID HINGED LID PACKAGES
IT1306254B1 (en) * 1995-05-05 2001-06-04 Gd Spa METHOD AND MACHINE FOR PACKAGING PRODUCTS
IT1292614B1 (en) † 1997-06-10 1999-02-08 Gd Spa METHOD AND DEVICE FOR THE WELDING OF CERTAIN PORTIONS OF PACKAGING OF HEAT-SEALABLE MATERIAL OF PRODUCTS.
ITBO20000735A1 (en) † 2000-12-21 2002-06-21 Gd Spa MACHINES AND METHOD FOR WRAPPING OF PRODUCTS
ITBO20030266A1 (en) † 2003-05-06 2004-11-07 Gd Spa PRODUCT PACKAGING MACHINE
ITBO20050167A1 (en) * 2005-03-17 2005-06-16 Gd Spa METHOD AND DEVICE FOR PACKAGING PACKAGES FOR SMOKE ITEMS
DE102005021935A1 (en) † 2005-05-12 2006-11-16 Rovema - Verpackungsmaschinen Gmbh Device for introducing of piece goods, preferably packages, into collecting box has first drive unit with two strands circulating around two deflection units, each of which by parallel section form holding surface for box
ITBO20050595A1 (en) * 2005-10-06 2006-01-05 Gd Spa METHOD AND MACHINE FOR THE WRAPPING OF A PRODUCT IN AT LEAST ONE SHEET OF PAPER
DE102006024559A1 (en) † 2006-05-23 2007-11-29 Focke & Co.(Gmbh & Co. Kg) Method and device for producing cigarette packets

Also Published As

Publication number Publication date
PL2607248T3 (en) 2014-11-28
ITBO20110745A1 (en) 2013-06-23
EP2607248A1 (en) 2013-06-26
EP2607248B2 (en) 2017-03-01

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