EP0811555B1 - Conveying device, in particular wheel for forming packaging envelops for cigarettes, or similar - Google Patents

Conveying device, in particular wheel for forming packaging envelops for cigarettes, or similar Download PDF

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Publication number
EP0811555B1
EP0811555B1 EP97108587A EP97108587A EP0811555B1 EP 0811555 B1 EP0811555 B1 EP 0811555B1 EP 97108587 A EP97108587 A EP 97108587A EP 97108587 A EP97108587 A EP 97108587A EP 0811555 B1 EP0811555 B1 EP 0811555B1
Authority
EP
European Patent Office
Prior art keywords
wheel
follower
pusher
articulated
fact
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.)
Expired - Lifetime
Application number
EP97108587A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0811555A1 (en
Inventor
Valter Spada
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.)
SASIB SpA
Original Assignee
SASIB SpA
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Filing date
Publication date
Application filed by SASIB SpA filed Critical SASIB SpA
Publication of EP0811555A1 publication Critical patent/EP0811555A1/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
    • 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
    • B65B11/28—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a curved path, e.g. on rotary tables or turrets
    • B65B11/30—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a curved path, e.g. on rotary tables or turrets to fold the wrappers in tubular form about contents

Definitions

  • the invention relates to a conveying device consisting of a stepwise rotating wheel forming packaging envelops for cigarettes, or similar, and comprising a plurality of peripheral cavities open on the radially external side and provided for housing each a group of cigarettes and for conveying the same from a feeding station to a discharge station along a circular track, said cavities being partially open also on their radially internal side for passage through the same of a follower in the feeding station and off a pusher in the discharge station, whereas the follower and the pusher are displaceable in a radial direction relative to said circular track and are actuated each by means of an associated articulated polygon being mounted on radial supporting rods which form part of said articulated polygons and which are given alternating motion in direction of their longitudinal axis, and whereas each articulated polygon comprises a four-bar linkage with a first and a second oscillating lever pivoted with one end to the supporting rod carrying the follower or the pusher and pivotably interconnected by a connecting rod which extends in
  • a conveying device of this kind is known from the document GB-A-2191166.
  • the follower and the pusher along with the respective articulated polygons are mounted on the conveyor wheel.
  • the internal envelop of the packet is made by envelopping a sheet of wrapper, especially foil, around a group of cigarettes having a predetermined number of cigarettes for the packet, these cigarettes are furthermore arranged in an orderly position foreseen in the packet.
  • This is carried out by feeding an arranged group of cigarettes together with a sheet of wrapper into a cavity of a so-called forming wheel.
  • the forming wheel is put into motion in steps and conveys the group of cigarettes and wrapping envelop of the same from one folding station to another of said wrapping sheet around the group of cigarettes, up to a discharge station where the group of cigarettes enveloped in the wrapper is transferred to a further pack forming station.
  • This one can also be formed by a forming wheel which, in particular for making soft pack packets, is substantially the same as the wheel for forming the external envelop.
  • the invention has therefore the purpose to create a conveying device of the kind described in the beginning and in which the follower in the feeding station, the pusher in the discharge station and the respective articulated polygons are made in such a way as to prevent the aforesaid inconveniences, limiting considerably the need for lubrication and the danger to stain and/or contaminate the product and offering the smallest inertia possible, the whole without resulting constructional excessively complex or costly.
  • the invention attains the aforesaid purposes by the combination of the following features:
  • a forming wheel 1 of the envelop, for example of foil, around an ordered group of cigarettes G is formed by two coaxial discs which have no rigid connection between them, but are supported revolving one in front of the other and at a previously established distance around a common axis on separate shafts 2, connected only dynamically between each other.
  • the two discs are driven in steps, for instance by a common drive shaft (not shown) from which two identical kinematic drive chains depart terminating in a Maltese cross 3.
  • This arrangement allows to leave an intermediate space completely free between the two discs forming the wheel.
  • the discs 101 are provided in axially coinciding positions with shaped cavities 201 which form two end cradles, these constitute the housings in which the group of cigarettes G are inserted into the feeding station A together with the respective sheets F.
  • Each disc is mounted on the front end extremity of a tubular shaft 2, the opposite extremity of which carries the Maltese cross in a manner to revolve together.
  • the follower has the function to cooperate with the tangential side of the group of cigarettes turned towards the forming wheel, holding the sheet F against them, while the conveyor acts on the opposite end of the group of cigarettes.
  • the follower 6 and the conveyor 4 which is part of the station combining the group of cigarettes with the sheet F without disturbing the formation of said group of cigarettes G and retaining the sheet F in the present relative position with respect to the cigarette group G, necessary to guarantee during the successive folding phases the complete wrapping of the group of cigarettes G in the envelopping sheet F.
  • the discharge pusher means are driven in the discharge station SC which is arranged diametrically opposite to the feeding station SA and which are used to transfer the group of cigarettes G completely envelopped in the wrapping sheet F out of the forming wheel to a successive operating station, as for example to a station forming the outer envelop, soft or hard, of the cigarette packet (not shown).
  • the arrangement of the two feeding and discharge stations SA, SC allows to make the follower and pusher devices in a substantially identical manner as the drive kinematics 5 of the devices are arranged in a rational symmetry relative to each other and with regards to the axis of rotation of the wheel 1. Therefore, in the following description of the said drive kinematics only one of the two devices will be described in detail, referring to the other only when that should be necessary.
  • the follower and the pusher 6, 7 are fixed on the front extremity of a substantially radial supporting rod 8 which is part of an articulated polygon, the axes of articulation of which are parallel to the axis of rotation of the forming wheel.
  • the articulated polygon an articulated pentalateral or eventually a hexalateral allows to carry out a displacement of the follower and of the pusher which is perfectly rectilinear and radial, correcting the components of the motion in the tangential direction of the wheel 1.
  • Said articulated polygon is formed by the supporting rod 8 of the follower 6 and the pusher 7.
  • the rod 8 is pivoted at 109 to a lever 9 which in its central area is pivoted at 209 to a driven lever 10, while the other extremity of the lever 9 is pivoted at 309 to a second end lever 11 which extends towards the supporting end of the pusher and follower 6, 7 and which at an intermediate level of the same is fulcrated on a fixed axis 12 in a freely oscillating manner.
  • the fixed axis 12 of the end lever 11 is fixed on a stationary support plate which can be supported by a stationary element integral with the framework of the machine which protrudes at the inner side of the wheel 1 through the tubular support shaft 2 of the disc 101 and/or by a supporting element connected to the framework of the machine which protrudes radially from below between the two discs, namely from a zone of the wheel were no work station is foreseen and where the cavities travel empty, this said part forming the return path of the cavities from the discharge station SC to the feeding station SA.
  • a further connecting rod 13 is pivoted to the driven oscillating lever 10 which extends in a substantially parallel position to the one of the supporting rods 8 and the end rod 11 and the other end of which is fulcrated in eccentric position 114 to a circular 14 or in particular annular plate, revolving around its proper axis like a crank button.
  • a further oscillating lever 15 connects in an articulated manner an intermediate point of the lever 8 which carries the follower or the pusher 6,7 with an eccentric fulcrum point of the circular plate or ring 14 and which in the example shown is coaxial to the eccentric fulcrum 114 of the connecting rod 13.
  • the driven oscillating lever 10 activates both the motion in the radial sense of the rod 8 as well as the button of the crank 114 constituted by the circular plate 14 and which does displace or rather oscillate transversally the front end of the support rod 8 in order to compensate in sense of its suppression the component of the tangential displacement relative to the forming wheel 1 which otherwise the extremities ,on which are the follower and the pusher 6, 7, would carry out.
  • the end rod 11 causes a further suppressive compensation of the tangential motion component.
  • the figs. 2 and 3 however show the real working conditions, where the follower 6 and the pusher 7 are both in the retracted and in the outward extended position, reaching the controlled operating condition of the feeding phases of a new group of cigarettes and the discharging of one group of cigarettes G wrapped in a finished envelop carried out contemporaneously.
  • the driven oscillating levers 10 are fixed with their extremity opposite to the articulated one to the remaining components of the articulated polygon on the extremity of a drive shaft 18, 18' separate for the follower 6 and the pusher 7.
  • the shafts 18, 18' are guided in a revolving manner parallel to each other through the tubular drive shaft of the disc 101 of the forming wheel and connect with one extremity to the oscillating levers 10 through a window 119 in the support plate 19.
  • the other extremity protrudes from the head of the tubular support shaft of the disc 101 and connects dynamically to a drive transmission or rather to the output shafts 120 of a group 20 transforming a continuos motion into an alternating rotary motion with a prefixed angular amplitude, the input shafts of which are connected to the kinematic chain of the machine drive.
  • the said group 20 can be constituted by a so-called oscillator, where the input shafts 220 drive a cam 320 of the desmodromic type and with which a set of rollers 420 cooperate supported by small radial arms 520 arranged at a prefixed relative angular distance and which are keyed on the output shaft 120.
  • the output shafts 120 each carry a small radial arm 21 which by means of a connecting rod 22 are articulated to radial arm 23 fixed on the respective drive shaft 18, 18' of the follower 6 and pusher 7. As evidenced in fig.
  • the rotary symmetrical arrangement of kinematic motions of the articulated polygons associated with the follower 5 and pusher 6 is also reflected in the arrangement of the cams 320 and the rollers 420, and the transmissions 21, 22, 23 for the two shafts 18, 18'.
  • the group 20 may present only one single input shaft 220, on which both cams are mounted offset by 180 degrees to each other and each cooperating with a set of rollers 420 carried by one of the two exit shafts 120.
  • the invention is not limited to the executive form here described and illustrated but can be amply varied, above all constructional.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
EP97108587A 1996-06-07 1997-05-28 Conveying device, in particular wheel for forming packaging envelops for cigarettes, or similar Expired - Lifetime EP0811555B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITSV960019 1996-06-07
IT96SV000019A IT1288136B1 (it) 1996-06-07 1996-06-07 Dispositivo trasportatore, in particolare ruota di formatura di involucri d'imballaggio per sigarette, o simili.

Publications (2)

Publication Number Publication Date
EP0811555A1 EP0811555A1 (en) 1997-12-10
EP0811555B1 true EP0811555B1 (en) 2002-09-25

Family

ID=11408168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97108587A Expired - Lifetime EP0811555B1 (en) 1996-06-07 1997-05-28 Conveying device, in particular wheel for forming packaging envelops for cigarettes, or similar

Country Status (3)

Country Link
EP (1) EP0811555B1 (it)
DE (1) DE69715729T2 (it)
IT (1) IT1288136B1 (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20030472A1 (it) * 2003-08-01 2005-02-02 Gd Spa Ruota operatrice di una macchina di incarto di prodotti.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1341200A (fr) * 1962-12-13 1963-10-25 Azionaria Costruzioni Acma Spa Dispositif transporteur-chargeur pour machines à envelopper des articles à vitesseélevée
DE1909777A1 (de) * 1969-02-27 1970-11-19 Bengs Senning Margarethe Verfahren und Vorrichtung zum Einfuehren von Packungen in sowie zur Entnahme von Packungen aus Packungstaschen eines rotierenden Revolvers
DD249681A1 (de) * 1986-06-04 1987-09-16 Nagema Veb K Vorrichtung zum uebergeben von bonbons

Also Published As

Publication number Publication date
ITSV960019A1 (it) 1997-12-07
DE69715729T2 (de) 2003-06-05
DE69715729D1 (de) 2002-10-31
EP0811555A1 (en) 1997-12-10
ITSV960019A0 (it) 1996-06-07
IT1288136B1 (it) 1998-09-10

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