EP0836993B1 - Méthode et dispositif pour envelopper des paquets de cigarettes dans des feuilles de carton - Google Patents

Méthode et dispositif pour envelopper des paquets de cigarettes dans des feuilles de carton Download PDF

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Publication number
EP0836993B1
EP0836993B1 EP97830450A EP97830450A EP0836993B1 EP 0836993 B1 EP0836993 B1 EP 0836993B1 EP 97830450 A EP97830450 A EP 97830450A EP 97830450 A EP97830450 A EP 97830450A EP 0836993 B1 EP0836993 B1 EP 0836993B1
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EP
European Patent Office
Prior art keywords
flap
movement
face
blank
group
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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.)
Expired - Lifetime
Application number
EP97830450A
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German (de)
English (en)
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EP0836993A1 (fr
Inventor
Stefano Villa
Alessandro Minarelli
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GD SpA
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GD SpA
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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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/004—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material in blanks, e.g. sheets precut and creased for folding
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/08—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path
    • B65B11/10—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in tubular form about contents
    • B65B11/12—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in tubular form about contents and then to form closing folds of similar form at opposite ends of the tube
    • 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
    • B65B49/00—Devices for folding or bending wrappers around contents
    • B65B49/12—Rotary folders

Definitions

  • the present invention relates to a method and a unit for carton-wrapping packets of cigarettes.
  • packets of cigarettes are wrapped in carton type packs by methods involving the use of flat die-cut cardboard blanks, wherein the single blank is folded along precreased lines to create a wrapper for a relative group of packets appearing substantially parallelepiped in shape and constituting the contents of the carton.
  • groups of packets advancing in succession are caused to cross a feed line carrying the blanks, in such a way that each blank is invested by and bent into a "U" configuration around a relative group, enveloping three faces of the parallelepiped and leaving the other three exposed; in this situation the blank continues to project beyond the dimensional compass of the group, affording at least two flaps on three sides that are destined ultimately to be bent through 90° and flattened against the three exposed faces.
  • this document teaches the use of folder units, one to each of the faces in question, rendered capable of alternating movement toward and away from a folding station and equipped with folder elements by which the flaps are engaged in contact and thereupon bent to a right angle.
  • the operation of folding the flaps down over each of the exposed faces takes place with the blank and the corresponding group of packets held at a standstill in the folding station, and occurs as the result of each folder unit being caused to make a forward stroke toward the station in a direction parallel to the relative exposed face.
  • Significant mechanical complications accompany the use of the method outlined above in cartoning machines, with regard especially to the alternating movement of the folder units.
  • the object of the present invention is to provide a method for carton-wrapping packets of cigarettes that will be unaffected by the drawbacks described above.
  • the object of the present invention is to provide a method for carton-wrapping packets of cigarettes in which the advantages of simplicity and economy are maximized as far as possible.
  • An additional object of the invention is to provide a method for carton-wrapping packets of cigarettes in which the wrapping materials utilized are subjected to minimal stresses, and moreover in which the mechanical stresses applied to the fold-making components are reduced to a minimum, as also is the noise generated by these same components.
  • the stated object is realized according to the present invention in a method for carton-wrapping packets of cigarettes that comprises the steps of: advancing a group of packets substantially parallelepiped in shape along a predetermined direction of movement and across a feed line conveying die-cut blanks, in such a way that each blank is engaged by a relative group, folded to a U profile and caused to envelop three faces of the group, namely a first transverse face positioned forwardmost in the direction of movement and two faces disposed parallel both with one another and with the direction of movement; folding the blank further about the group in such a manner as to envelop a fourth face remote from the first face, thereby producing a closed configuration in which the blank projects beyond the two remaining end faces presented by the two opposite ends of the parallelepiped, affording at least one first flap and one second flap disposed orthogonally to each of the selfsame end faces; and bending the first and second flaps through a right angle and into contact with the respective end faces to complete the wrapping operation, characterized in that the step
  • the folder head is rotatable about an axis disposed perpendicular to the direction of movement followed by the groups of-packets.
  • the present invention relates also to a unit for carton-wrapping packets of cigarettes.
  • a unit for carton-wrapping packets of cigarettes comprises a feed line conveying die-cut blanks; pushing means by which groups of packets substantially parallelepiped in shape are caused to advance along a predetermined direction of movement and across the feed line in such a way that each blank is engaged by a respective group, folded to a U profile and caused to envelop three faces of the group, -namely a first transverse face positioned forwardmost in the direction of movement and two faces disposed parallel with one another and with the direction of movement; first folding means by which the blank is closed around the group in such a way as to envelop a fourth face remote from the first face, producing a configuration in which the blank projects beyond the two remaining faces presented by the two opposite ends of the parallelepiped, affording at least one first flap and one second flap disposed orthogonally to each of the selfsame end faces; also second folding means by which the first and second flaps are engaged, bent to a right angle and flattened against the relative end face to complete the wrapping operation, characterized in
  • the folder head rotates about an axis disposed perpendicular to the direction of movement followed by the groups of packets.
  • 1 denotes a cartoning machine, in its entirety, incorporating a unit 2 of which the function is to assemble cartons 3 of packets 4 containing cigarettes.
  • the packets 4 are supplied to the unit 2 as groups 5 of substantially parallelepiped shape, each comprising a plurality of individual packets 4 arranged alongside and on top of one another ready to be enveloped in a single wrapper 6 fashioned from a precreased die-cut blank 7 of sheet material.
  • Each group 5 of packets 4 has a longitudinal axis 8 and presents two larger side faces 9 and 10, also two smaller side faces 11 and 12, and two end faces 13.
  • the unit 2 comprises a conveyor 14 along which the packets 4 advance in continuous succession, ordered in stacks 4' two-high, following a direction 15 parallel to the axis 8 of the group 5 which carries them toward a wrapping station 16.
  • the wrapping station 16 is equipped with a push rod 17 capable of reciprocating movement in a direction 18 transverse to the conveying direction 15.
  • the rod 17 presents a pushing surface 17' of which the length, measured along the conveying direction 15, is such as will enable it to impinge during each active stroke on a number of stacks 4' equivalent to the number (five, in fig 2) making up a single group 5.
  • a group 5 of packets 4 is made to advance with the smaller face denoted 11 forwardmost and to cross a feed line 19, along which the blanks 7 are carried in a direction 20 orthogonal to the directions 18 and 15 followed by the packets 4, proceeding thereafter with the downwardly directed larger face 10 resting slidably on a plate P located immediately beyond the selfsame feed line 19 in the pushing direction 18.
  • each group 5 directed across the feed line 19 becomes associated with a respective blank 7 which is then folded into a U shape in such a way as to envelop the group 5 in part. More exactly, two side panels 21 and 22 of the blank 7 are flattened against the larger side faces 9 and 10 of the group 5, whilst one intermediate panel 23 of the blank 7 is flattened against the leading smaller side face 11.
  • the side panels 21 and 22 are extended by way of the two edges remote from the intermediate panel 23 into longitudinal panels 24 and 25 projecting outwards from the remaining side face 12.
  • the blank 7 affords two pairs of flaps 26 and 27 associated with the side panels 21 and 22 via the edges lying in the two planes occupied by the respective end faces 13, a further pair of flaps 28 projecting externally from each end of the intermediate panel 23, and finally a pair of flaps 29 projecting externally from each end of the longitudinal panel denoted 25.
  • the group 5 advances along the plate P in the pushing direction 18, still driven by the rod 17, toward a limit position that coincides with a folding station denoted 30; here the assembled parts 5 and 7 are brought to a standstill so that the process of folding up the wrapper 6 to form a relative carton 3 is completed.
  • the unit 2 comprises a top folder 33 and a bottom folder 34, both of conventional guillotine type embodiment, positioned at the folding station 30 and capable of alternating movement in a direction substantially perpendicular to the plate P, of which the function is to close up each successive blank 7 into a tube via a familiar process whereby the two projecting panels 24 and 25 are engaged and bent through a right angle into contact with the relative face 12 of the group 5.
  • Each head 35 is designed to interact with the respective flaps 26, 27, 28 and 29 of the single blank 7 in such a way that these are flattened against the two corresponding end faces 13 of the group 5 in a succession of folds, shortly to be described, with the flap denoted 27 sandwiched between that denoted 26 and the remaining two 28 and 29.
  • each folder head 35 is compassed peripherally by a cylindrical surface 36 and comprises a body 37 keyed to the output shaft 38 of a motor (not indicated) by which the head 35 is set in substantially continuous rotation about an axis 39 disposed orthogonal to the plate P and to the pushing direction 18 and parallel with the direction 20 along which the blanks 7 approach the folding station 30.
  • Each head 35 is caused to rotate about its own axis 39 in a direction F such that in operation, the mutually opposed portions of the two cylindrical surfaces 36 revolve convergently with the pushing direction 18.
  • the single head 35 presents two diametrally opposed radial arms 40 supported by and connected to a first end of the relative body 37, also two radial arms 41 connected to a second end of the body 37 and likewise diametrally opposed, in positions offset from those of the first arms 40.
  • each first radial arm 40 combines with a respective appendage 42 of the body 37 to support a blade 43 presenting the appearance of a substantially spherically contoured cap or spoon disposed with the concave side directed toward a respective second radial arm 41 and terminating forwardmost, relative to the direction of movement F, in a forcing edge 44.
  • the spherically contoured outer surface of the blade 43 merges on the one hand with one end of a prong disposed along the cylindrical surface 36 in the manner of a terminal appendage or portion 45, extending rearwards (relative to the direction of movement F) from the blade 43, and on the other with an appendage or edge 46 of hook like profile extending forward from the blade 43.
  • each second radial arm 41 supports a blade 47 presenting the appearance of a substantially spherically contoured cap or spoon disposed with the concave side directed toward a respective first radial arm 40 and terminating forwardmost, relative to the direction of movement F, in a forcing edge 48.
  • the spherically contoured outer surface of each such blade 47 merges with one end of a prong disposed along the cylindrical surface 36 in the manner of a terminal appendage or portion 49, extending rearwards (in relation to the direction of movement F indicated in fig 2) from the blade 47.
  • each of the flaps denoted 28 will be engaged by the terminal portion 49 of a blade 47 associated with the respective head 35, bent through 90° in the direction opposite to the pushing direction 18 and flattened thus against the corresponding end face 13.
  • the rotation of the two heads 35 will be timed in relation to the movement of the push rod 17 during the operating cycle of the unit 2 in such a manner that on the arrival of each assembled group 5 and blank 7 at the folding station 30, the terminal portion 49 of one of the blades 47 afforded by each head 35 will always be positioned to intercept the relative flap 28.
  • the top and bottom folders 33 and 34 come into operation, impinging respectively on the projecting panels 24 and 25 in conventional manner and causing the blank 7 to close around the group 5 in a tubular configuration with the two panels 24 and 25 now flattened over the hitherto exposed side face 12 and three flaps 26, 27 and 29 still projecting at each end; in particular, the two larger flaps 26 and 27 are disposed mutually parallel, orthogonal to the axis 39 of the relative folder head 35 and to the end face 13, whilst the remaining flap 29 is disposed between the two larger flaps 26 and 27, projecting at right angles from the end face 13 within a plane parallel to the axis 39 of the folder head 35.
  • the unit will proceed to implement the folding steps as illustrated in figs 4a and 4b: with the first flap 28 held flat against the end face 13 by the terminal portion 49 of one blade 47, the opposite flap 29 is engaged by the edge 46 of the next blade 43 in sequence and bent gradually through 90° until flush likewise with the end face 13. Substantially at the same time, as illustrated in figs 4c, 4d and 4e, the leading edge 44 of the same blade 43 begins to bear against the flap denoted 26, and this too is flattened gradually over the two already folded flaps 28 and 29.
  • the terminal portion 45 of the blade 43 next rotates into contact with the now fully folded flap 26, which as a result remains pinned flat against the flaps 28 and 29 beneath.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)

Claims (13)

  1. Une méthode pour envelopper des paquets de cigarettes dans des feuilles de carton, comprenant les phases suivantes : avance d'un groupe (5) de paquets (4), présentant en substance la forme d'un parallélépipède, dans une direction d'avance (18) donnée et à travers une ligne d'alimentation (19) transportant des ébauches (7) prédécoupées, de manière à ce que chaque ébauche soit interceptée par un groupe (5) correspondant, pliée en U et vienne envelopper trois faces (9, 10, 11) du groupe (5), à savoir, une première face transversale (11) située en avant dans ladite direction d'avance (18) et deux faces (9, 10) parallèles entre elles et à la direction d'avance (18) ; fermeture de l'ébauche (7) autour du groupe (5) de manière à envelopper une quatrième face (12) opposée à la première face (11), créant ainsi une configuration fermée dans laquelle l'ébauche (7) dépasse au-delà des deux faces d'extrémité restantes (13) définies par les deux extrémités opposées du parallélépipède, présentant au moins un premier rabat (26) et un deuxième rabat (27) orthogonaux à la face d'extrémité (13) respective ; et pliage à angle droit des premier et deuxième rabats (26, 27) contre les faces d'extrémité respectives (13) pour achever l'opération d'enveloppement, la méthode étant caractérisée en ce que la phase de pliage à angle droit de chaque premier rabat (26) et de chaque deuxième rabat (27) contre la face d'extrémité correspondante (13) est effectuée au moyen d'une tête plieuse rotative (35) respective et pendant un mouvement de rotation de cette même tête (35) sur un axe (39) correspondant, et en ce que la phase de pliage est effectuée sur les premier et deuxième rabats (26, 27) placés transversalement à l'axe de rotation (39).
  2. Méthode selon la revendication 1, caractérisée en ce que ladite tête plieuse (35) peut tourner sur un axe (39) qui est perpendiculaire à la direction d'avance (18).
  3. Méthode selon la revendication 2, caractérisée en ce que ladite phase de pliage à angle droit des rabats est effectuée pendant un mouvement de rotation de ladite tête (35) sur l'axe (39), ce mouvement de rotation étant en substance continu et convergent avec la direction d'avance (18) suivie par les groupes de paquets.
  4. Méthode selon les revendications de 1 à 3, caractérisée en ce que ladite phase de pliage à angle droit des rabats est effectuée alors que le groupe (5) de paquets est à l'arrêt au niveau d'une station de pliage (30).
  5. Méthode selon la revendication 4, caractérisée en ce que ladite ébauche (7) présente un troisième rabat (29) qui dépasse au-delà de chaque face d'extrémité (13) du groupe (5) entre les premier et deuxième rabats (26, 27) et dans un plan parallèle à l'axe (39) de rotation, et en ce qu'elle comprend aussi la phase de pliage à angle droit du troisième rabat (29) au moyen de la tête plieuse rotative (35) pour achever l'opération d'enveloppement.
  6. Méthode selon la revendication 5, caractérisée en ce que ladite ébauche (7) présente un quatrième rabat (28) qui dépasse au-delà de chaque face d'extrémité (13) du groupe (5) en substance dans le plan occupé par la première face transversale (11), et en ce qu'elle comprend aussi la phase, effectuée quand le groupe (5) entre dans la station de pliage (30), où le quatrième rabat (28) est intercepté par la tête plieuse (35), plié dans la direction opposée à la direction d'avance (18) et aplati contre la face d'extrémité (13).
  7. Un dispositif (2) pour envelopper des paquets de cigarettes dans des feuilles de carton, comprenant une ligne d'alimentation (19) transportant des ébauches (7) prédécoupées ; des moyens pousseurs (17) destinés à faire avancer des groupes (5) de paquets (4) présentant en substance la forme d'un parallélépipède dans une direction d'avance (18) donnée et à travers la ligne d'alimentation (19), de manière à ce que chaque ébauche (7) soit interceptée par un groupe (5) respectif, pliée en U et vienne envelopper trois faces (9, 10, 11) du groupe, à savoir, une première face transversale (11) située en avant dans la direction d'avance (18) et deux faces (9, 10) parallèles entre elles et à la direction d'avance ; des premiers moyens de pliage (33, 34) destinés à fermer l'ébauche (7) autour du groupe (5) de manière à envelopper une quatrième face (12) opposée à la première face (11), créant ainsi une configuration dans laquelle l'ébauche (7) dépasse au-delà des deux faces restantes (13) définies par les deux extrémités opposées du parallélépipède, présentant au moins un premier rabat (26) et un deuxième rabat (27) orthogonaux à la face d'extrémité (13) respective ; et comprenant aussi des deuxièmes moyens de pliage (35) par l'intermédiaire desquels les premier et deuxième rabats (26, 27) sont interceptés, pliés à angle droit et aplatis contre la face d'extrémité (13) correspondante pour achever l'opération d'enveloppement, caractérisé en ce que lesdits deuxièmes moyens de pliage comprennent des têtes plieuses rotatives (35) agissant chacune sur une face d'extrémité (13) et pouvant chacune tourner sur un axe (39) correspondant, et en ce que ladite tête plieuse (35) comprend des moyens plieurs (43, 47) destinés à achever l'opération d'enveloppement sur une ébauche (7) se trouvant avec les premier et deuxième rabats (26, 27) transversaux à l'axe de rotation (39).
  8. Dispositif selon la revendication 7, caractérisé en ce que ladite tête plieuse (35) peut tourner sur un axe (39) qui est perpendiculaire à la direction d'avance (18).
  9. Dispositif selon la revendication 8, caractérisé en ce que le mouvement de rotation de la tête (35) sur l'axe (39) est en substance continu et convergent avec la direction d'avance (18) suivie par les groupes de paquets.
  10. Dispositif selon la revendication 9, caractérisé en ce que ladite tête plieuse (35) est extérieurement limitée par une surface cylindrique (36).
  11. Dispositif selon la revendication 10, caractérisé en ce que lesdits moyens plieurs (43, 47) comprennent une première et une deuxième lame (43, 47) supportées par des bras (40, 41) respectifs reliés dans une position décalée l'un par rapport l'autre à des extrémités opposées d'un corps (37) associé avec la tête (35), chaque lame (43, 47) présentant l'aspect d'une calotte ou cuillère sphérique dont le côté concave est orienté en substance vers le bras (41, 40) de l'autre lame (47, 43).
  12. Dispositif selon la revendication 11, caractérisé en ce que ledit premier rabat (26) de l'ébauche (7) est intercepté par un premier bord (44) de la première lame (43) pour être plié à angle droit, tandis qu'un troisième rabat (29) s'étendant entre les premier et deuxième rabats (26, 27) et occupant un plan parallèle à l'axe de rotation (39) est intercepté par un autre bord en forme de crochet (46) de cette même première lame (43) pour être plié à angle droit.
  13. Dispositif selon la revendication 12, caractérisé en ce que ledit deuxième rabat (27) de l'ébauche est intercepté par un bord (48) de la deuxième lame (47) pour être plié à angle droit, tandis qu'un quatrième rabat (28) se trouvant en substance dans le plan occupé par la première face transversale (11) est intercepté par une portion terminale (49) de cette même deuxième lame (47) pour être plié dans la direction opposée à la direction d'avance (18) suivie par les groupes de paquets.
EP97830450A 1996-10-17 1997-09-15 Méthode et dispositif pour envelopper des paquets de cigarettes dans des feuilles de carton Expired - Lifetime EP0836993B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96BO000521A IT1286263B1 (it) 1996-10-17 1996-10-17 Metodo ed unita' per la formazione di stecche di pacchetti di sigarette
ITBO960521 1996-10-17

Publications (2)

Publication Number Publication Date
EP0836993A1 EP0836993A1 (fr) 1998-04-22
EP0836993B1 true EP0836993B1 (fr) 2001-05-16

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EP97830450A Expired - Lifetime EP0836993B1 (fr) 1996-10-17 1997-09-15 Méthode et dispositif pour envelopper des paquets de cigarettes dans des feuilles de carton

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EP (1) EP0836993B1 (fr)
CN (1) CN1180637A (fr)
DE (1) DE69704829T2 (fr)
IT (1) IT1286263B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20080264A1 (it) * 2008-04-24 2009-10-25 Gima Spa Apparato di avvolgimento e chiusura di un involucro attorno ad un articolo.
DE102011018839A1 (de) * 2011-04-27 2012-10-31 Winkler + Dünnebier Gmbh Verfahren zum Verpacken von Produkten und Verpackungsanlage zur Durchführung des Verfahrens

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605382A (en) * 1969-05-06 1971-09-20 Erik Andersson Machine for wrapping rolls
EP0548047A1 (fr) * 1988-02-10 1993-06-23 Molins Plc Machines d'emballage
DE3837440A1 (de) * 1988-11-04 1990-05-10 4 P Nicolaus Kempten Gmbh Einrichtung zum verschliessen einer faltschachtel
IT1257754B (it) 1992-03-03 1996-02-13 Gd Spa Metodo per la realizzazione di stecche di pacchetti di sigarette

Also Published As

Publication number Publication date
ITBO960521A0 (it) 1996-10-17
ITBO960521A1 (it) 1998-04-17
DE69704829T2 (de) 2001-11-22
DE69704829D1 (de) 2001-06-21
EP0836993A1 (fr) 1998-04-22
CN1180637A (zh) 1998-05-06
IT1286263B1 (it) 1998-07-08

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