EP3925896A1 - Transfereinheit und verfahren zum transfer von paaren von umhüllungen, die gruppen von rauchartikeln enthalten, mit änderung des gegenseitigen abstands - Google Patents

Transfereinheit und verfahren zum transfer von paaren von umhüllungen, die gruppen von rauchartikeln enthalten, mit änderung des gegenseitigen abstands Download PDF

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Publication number
EP3925896A1
EP3925896A1 EP21179615.6A EP21179615A EP3925896A1 EP 3925896 A1 EP3925896 A1 EP 3925896A1 EP 21179615 A EP21179615 A EP 21179615A EP 3925896 A1 EP3925896 A1 EP 3925896A1
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EP
European Patent Office
Prior art keywords
transfer
pocket
station
pockets
wraps
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Granted
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EP21179615.6A
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English (en)
French (fr)
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EP3925896B1 (de
Inventor
Mattia MECCAGNI
Stefano Sarti
Franco FALCINELLI
Michele Squarzoni
Giuliano Gamberini
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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
    • 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
    • B65B19/12—Inserting the cigarettes, or wrapped groups thereof, into preformed containers
    • B65B19/20—Inserting the cigarettes, or wrapped groups thereof, into preformed containers into boxes with hinged lids
    • 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
    • B65B19/22—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers
    • B65B19/223—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers in a curved path; in a combination of straight and curved paths, e.g. on rotary tables or other endless conveyors
    • 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
    • B65B19/22—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers
    • B65B19/24—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers using hollow mandrels through which groups of cigarettes are fed
    • 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
    • B65B19/025—Packaging cigarettes in webs of flexible sheet material
    • 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
    • B65B19/22—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers
    • B65B19/223—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers in a curved path; in a combination of straight and curved paths, e.g. on rotary tables or other endless conveyors
    • B65B19/226—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers in a curved path; in a combination of straight and curved paths, e.g. on rotary tables or other endless conveyors using endless conveyors having pockets, each pocket being provided with separate members, e.g. folders
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes

Definitions

  • the present invention relates to a transfer unit and to a transfer method to transfer pairs of wraps containing groups of smoking articles, in particular groups of cigarettes, changing the mutual distance thereof.
  • twin a packet of cigarettes is known commercially called "twin" and comprising a rigid external container which houses inside therein two groups of cigarettes that are identical (i.e. "twins” wherefrom the commercial name of the packet of cigarettes), which are arranged side by side and are wrapped up in corresponding wrap sheets.
  • Patent No. EP3362365B1 describes a packaging machine for producing a "twin" packet of cigarettes comprising: a forming unit in which the groups of cigarettes are formed in succession, a first wrapping unit provided with wheels with horizontal axis in which a wrap sheet is folded around each group of cigarettes so as to form a corresponding wrap, a grouping (coupling) unit provided with a wheel in which the wraps are grouped (coupled) two by two so as to form the content of the packet of cigarettes, and a second wrapping unit provided with wheels with horizontal axis in which a collar and a blank are folded around each pair of wraps so as to form an external container.
  • patent No. US4258528A describes a packaging machine for producing a "twin" packet of cigarettes comprising: a forming unit in which the groups of cigarettes are formed in succession, a first wrapping unit provided with linear conveyors in which a wrap sheet is folded around each group of cigarettes so as to form a corresponding wrap, a grouping (coupling) unit in which the wraps are grouped (coupled) two by two so as to form the content of the packets of cigarettes, and a second wrapping unit provided with a wheel with vertical axis in which a collar and a blank are folded around each pair of wraps so as to form an external container.
  • the problem is how to replace the grouping unit (in which the wraps are grouped two by two) with a transfer unit which transfers the wraps from two input conveyors parallel to one another (constituting the output of the first wrapping unit) to one single output conveyor (constituting the input of the second wrapping unit) perpendicular to the input conveyors.
  • the purpose of the present invention is to provide a transfer unit and a transfer method for transferring pairs of wraps containing groups of smoking articles changing the mutual distance thereof, said transfer unit and transfer method being simple and compact to implement, allowing operating at a high production speed (measured as packets of cigarettes transferred in the time unit), and allowing quickly carrying out the size change operations.
  • a transfer unit and a transfer method are provided for transferring pairs of wraps containing groups of smoking articles changing the mutual distance thereof, according to what claimed in the appended claims.
  • reference numeral 1 indicates, as a whole, a rigid packet of cigarettes.
  • the packet of cigarettes 1 comprises an external container 2 made of cardboard or rigid paperboard and cup-shaped and a wrap 3 (better illustrated in Figure 4 ) housed inside the container 2.
  • the external container 2 has an open upper end and is provided with a lid 4, which is cup-shaped and is hinged to the external container 2 along a hinge 5 (illustrated in Figure 2 ) for rotating, relative to the external container 2, between an open position (illustrated in Figure 3 ) and a closed position (illustrated in Figures 1 and 2 ) of the open upper end.
  • the wrap 3 encloses a group of cigarettes 5 (illustrated in Figure 5 ) having a parallelepiped shape. Furthermore, the wrap 3 has at the top and at the front a removable portion which is separate from the rest of the wrap 3 by a pre-weakened tearable line; when opening the packet of cigarettes 1 for the first time, the user grabs and tears the removable portion so as to access to the underlying cigarettes of the group of cigarettes 5.
  • the packet of cigarettes 1 also comprises a rigid collar 6, which is connected (by means of glueing) U-folded inside the external container 2 so as to partially protrude outside of the open upper end of the external container 2 and engage a corresponding internal surface of the lid 4 when the lid 4 is arranged in the closed position.
  • each wrap 3 is made by folding a wrap sheet 8 around the group of cigarettes 5, said wrap sheet 8 provided on one side of the tearable line which delimits the removable portion.
  • the external container 2 and the lid 4 are made by folding a blank 8 of conventional type.
  • reference numeral 9 indicates, as a whole, a packaging machine which is designed to manufacture the packet of cigarettes 1 described above and works with intermittent motion (i.e. a motion which envisages a cyclical alternation of motion steps and stop steps).
  • the packaging machine 9 comprises a frame 10 which rests on the ground by means of a plurality of feet (not illustrated) and is composed of the union of two bodies 11 and 12 arranged side by side; in particular, the body 11 has a front wall and a side wall on which the operating members (partially described below) are arranged, whereas the body 12 has (only) a front wall on which all the operating members (partially described below) are arranged.
  • the packaging machine 9 comprises a forming unit A in which the groups of cigarettes 5 are formed in succession, a wrapping unit B in which around each group of cigarettes 2 a respective wrap sheet 7 is wrapped for making a wrap 3, a transfer unit C in which the wraps 3 are transferred two by two towards a following wrapping unit D, and the wrapping unit D in which a collar 6 and a blank 8 are wrapped around each wrap 3 so as to manufacture an external container 2 provided with lid 4.
  • the forming unit A of the groups of cigarettes 5 comprises a hopper 13 provided with three output mouths 14 for simultaneously feeding three pairs of groups of cigarettes 5 (i.e. six groups of cigarettes 5) to three respective pockets 15 of a forming conveyor 16 which supports a plurality of pockets 15 (each receiving two groups of cigarettes 5 at a time).
  • the forming conveyor 16 comprises a conveyor belt with an annular shape, which is wrapped around two end pulleys (one of which is motorised), supports the pockets 15 and moves at pace for cyclically moving the pockets 15 along a forming path P1 (illustrated in Figure 10 ).
  • the forming path P1 develops between an input station S1, in which each group of cigarettes 5 is extracted from an output mouth 14 of the hopper 13 and enters a corresponding pocket 15, and an exchange station S2 in which each group of cigarettes 5 is extracted from the corresponding pocket 15.
  • the wrapping unit B comprises a wrap conveyor 17 designed to move two groups of cigarettes 5 side by side (extracted together from a same pocket 15 of the forming conveyor 16 in the exchange station S2) along a horizontal rectilinear wrapping path P2.
  • the wrapping path P2 extends from the exchange station S2 in which the wrap conveyor 17 extracts two groups of cigarettes 5 at a time from the corresponding pocket 15 of the forming conveyor 16, passes through a feeding station S3 in which each group of cigarettes 5 couples to a corresponding wrap sheet 7 which U-folds around a group of cigarettes 5, and ends in an exchange station S4 in which two wraps 3 side by side (each formed by a wrap sheet 7 folded around a group of cigarettes 5) leave the wrap conveyor 17 (to enter the transfer unit C).
  • the wrap conveyor 17 comprises a conveyor belt 18 with annular shape, which is wrapped around two end pulleys (one of which is motorised) and supports a plurality of pairs of pushing elements 19, each connected to the conveyor belt 18 by means of a support column (narrow, i.e. narrower than the pushing element 19) and is designed to engage a back wall of a corresponding group of cigarettes 5 so as to push the group of cigarettes 5 along the wrapping path P2.
  • the wrap conveyor 17 comprises two twin horizontal channels, which are parallel and side by side, each delimited at least at the bottom and on the side (preferably also at the top in the initial part thereof), is arranged along the wrapping path P2, and contains inside therein each group of cigarettes 5 while the group of cigarettes 5 moves along the wrapping path P2 pushed at the back by a corresponding pushing element 19.
  • each wrap sheet 7 is arranged to be intercepted by a corresponding group of cigarettes 5 around which the wrap sheet 7 U-folds; in other words, each group of cigarettes 5 moving along the wrapping path P2 intercepts a corresponding wrap sheet 7 arranged in the feeding station S3 determining the U-folding of the wrap sheet 7.
  • the packaging machine 9 comprises a feeding device 20 which cyclically feeds pairs of wrap sheets 7 into the feeding station S3, i.e. arranges each pair of wrap sheets 7 in the feeding station S3 so that the wrap sheets 7 are intercepted by two corresponding groups of cigarettes 5 moving along the wrapping path P2.
  • the feeding device 20 comprises an unwinding station in which a wrapping material band 21 is unwound by a coil 22 and is moved (passing next to the hopper 13) towards a cutting member 23 of known type which is arranged above the feeding station S3 and cyclically carries out both a longitudinal cut of the wrapping material band 21, and a transverse cut of the wrapping material band 21 so as to separate from the wrapping material band 21 pairs of wrap sheets 7.
  • the feeding device 20 could also comprise a processing member (for example an embosser) which is arranged between the unwinding station and the cutting member 23 and carries out a processing (for example an embossing) of the wrapping material band 21.
  • the wrapping unit B comprises a pair of folding devices 24 which are arranged along the wrapping path P2 downstream of the feeding station S3 and are designed to fold two open side ends of each wrap sheet 7 U-folded around a corresponding group of cigarettes 5 for forming a tubular wrap having an open back end.
  • each folding device 24 comprises only folding profiles (i.e. folding helixes) which are fixed (i.e. totally devoid of parts in movement) and are arranged on opposite sides of the wrapping path P2.
  • the wrapping unit B comprises a pair of folding devices 25 which are arranged along the wrapping path P2 downstream of the folding devices 24 and are designed to complete the folding of each wrap sheet 7 around the corresponding group of cigarettes 5 (and thus end the making of the wrap 3) so as to close the open back end (i.e. previously left open by the corresponding folding device 24).
  • the wrapping path P2 begins in the transfer station S2 (in which the groups of cigarettes 5 enter two at a time the wrap conveyor 17) and ends in the exchange station S4 (in which the wraps 3 leave the wrap conveyor 17 two at a time for entering the transfer unit C).
  • the packaging machine 9 comprises a feeding conveyor 26 which receives the wraps 3 from the transfer unit C (as better described below) and moves the wraps 3 along a feeding path P3 which is rectilinear and perpendicular to the wrapping path P2 up to an exchange station S5 (in which the wraps 3 leave the feeding conveyor 26).
  • the feeding conveyor 26 comprises a conveyor belt with annular shape, which is wrapped around two end pulleys (one of which is motorised), supports a plurality of feeding pockets 27 each designed to house a corresponding wrap 3, and moves at pace for cyclically moving the feeding pockets 27 along the feeding path P3 from the transfer unit C to the exchange station S5.
  • the transfer unit C is arranged between the wrap conveyor 17 and the feeding conveyor 26, cyclically receives from the wrap conveyor 17 and in the exchange station S4 a pair of wraps 3, which are arranged at an input distance I from one another (illustrated in Figure 14 ), moves the two wraps 3 close to/away from one another so as to arrange them at an output distance O from one another (illustrated in Figure 14 ) different from the input distance I, and thus hands over the two wraps 3 to two respective feeding pockets 27 of the feeding conveyor 26.
  • the output distance O can be greater (according to a variant not illustrated) or smaller (according to what illustrated in the accompanying figures) than the input distance I; i.e.
  • the transfer unit C can move away (according to a variant not illustrated) or move close (according to what illustrated in the accompanying figures) the two wraps 3 which are transferred together.
  • the input distance I could be comprised between 40 and 60 mm
  • di output distance O could be comprised between 50 and 100 mm.
  • the wrap conveyor 17 cyclically moves along the wrapping path P2 a pair of wraps 3, which are arranged at the input distance I from one another, whereas the feeding conveyor 26 moves the feeding pockets 27 thereof containing the wraps 3 arranged at an output distance O from one another along the feeding path P3.
  • the transfer unit C comprises four transfer pockets 28, 29, 30 and 31, each designed to house a respective wrap 3. Furthermore, the transfer unit C comprises two output stations S7 and S8 and one input station S6 arranged between the two output stations S7 and S8 (and arranged in the area of the exchange station S4).
  • the transfer unit C comprises an insertion device 32 (schematically illustrated in Figure 14 ) which is designed to simultaneously insert two wraps 3 received together from the wrap conveyor 17 and arranged at the input distance I from one another, into the transfer pocket 28 and into the transfer pocket 29 which are together in the input station S6 (as illustrated in Figures 14 , 15 and 16 ) or into the transfer pocket 30 and into the transfer pocket 31 which are together in the input station S6 (as illustrated in Figures 18 , 19 and 20 ).
  • an insertion device 32 (schematically illustrated in Figure 14 ) which is designed to simultaneously insert two wraps 3 received together from the wrap conveyor 17 and arranged at the input distance I from one another, into the transfer pocket 28 and into the transfer pocket 29 which are together in the input station S6 (as illustrated in Figures 14 , 15 and 16 ) or into the transfer pocket 30 and into the transfer pocket 31 which are together in the input station S6 (as illustrated in Figures 18 , 19 and 20 ).
  • the transfer unit C comprises an extracting device 33 (schematically illustrated in Figure 14 ) which is designed to simultaneously extract two wraps 3 arranged at the output distance O from one another, from the transfer pocket 28 and from the transfer pocket 29 which are together in the output station S7 (as illustrated in Figures 14 , 15 and 16 ) or from the transfer pocket 30 and from the transfer pocket 31 which are together in the output station S8 (as illustrated in Figures 18 , 19 and 20 ) which is opposite the output station S7 with respect to the input station S6.
  • an extracting device 33 (schematically illustrated in Figure 14 ) which is designed to simultaneously extract two wraps 3 arranged at the output distance O from one another, from the transfer pocket 28 and from the transfer pocket 29 which are together in the output station S7 (as illustrated in Figures 14 , 15 and 16 ) or from the transfer pocket 30 and from the transfer pocket 31 which are together in the output station S8 (as illustrated in Figures 18 , 19 and 20 ) which is opposite the output station S7 with respect to the input station S6
  • the transfer unit C comprises a moving device 34 (illustrated in Figure 12 and partially in Figure 13 ) which is designed to move along a horizontal moving direction D1 the transfer pocket 28 and the transfer pocket 29 between the input station S6 and the output station S7 and is simultaneously designed to move the transfer pocket 30 and the transfer pocket 31 between the output station S8 and the input station S6; obviously, when the transfer pocket 28 and the transfer pocket 29 are together in the input station S6 (as illustrated in Figures18 , 19 and 20 ) the transfer pocket 30 and the transfer pocket 31 are together in the output station S8, whereas when the transfer pocket 28 and the transfer pocket 29 are together in the output station S7 (as illustrated in Figures 14 , 15 and 16 ) the transfer pocket 30 and the transfer pocket 31 are together in the input station S6.
  • a moving device 34 illustrated in Figure 12 and partially in Figure 13
  • the transfer unit C comprises a moving device 34 (illustrated in Figure 12 and partially in Figure 13 ) which is designed to move along a horizontal moving direction D1 the transfer pocket 28 and the transfer pocket
  • the input station S6 and the output stations S7 and S8 are aligned with one another along the moving direction D1 and, as said in the foregoing, the input station S6 is between the two output stations S7 and S8.
  • the four transfer pockets 28, 29, 30 and 31 are aligned with one another along the moving direction D1; furthermore, the transfer pocket 28 and the transfer pocket 29 are arranged on one side whereas the transfer pocket 30 and the transfer pocket 31 are arranged on the opposite side so that the transfer pocket 29 and the transfer pocket 30 are arranged between the transfer pocket 28 and the transfer pocket 31 (i.e. the transfer pockets 29 and 30 are in the middle whereas the transfer pockets 28 and 31 are at the ends).
  • the moving device 34 comprises an actuator element 35 (substantially a bar arranged horizontally along the moving direction D1) which is mounted axially sliding so as to alternatively move forwards and backwards along the moving direction D1; the actuator element 35 moves the transfer pockets 29 and 30, i.e. the transfer pockets 29 and 30 are mounted sliding on a fixed guide and are connected to the actuator element 35 and thus move together with the actuator element 35 (i.e. the two transfer pockets 29 and 30 always move in a synchronous manner).
  • an actuator element 35 substantially a bar arranged horizontally along the moving direction D1
  • the actuator element 35 moves the transfer pockets 29 and 30, i.e. the transfer pockets 29 and 30 are mounted sliding on a fixed guide and are connected to the actuator element 35 and thus move together with the actuator element 35 (i.e. the two transfer pockets 29 and 30 always move in a synchronous manner).
  • the moving device 34 comprises an actuator element 36 (substantially a bar arranged horizontally along the moving direction D1) which is separate from and independent of the actuator element 35, is mounted axially sliding so as to alternatively move forwards and backwards along the moving direction D1, and is arranged parallel and next to the actuator element 35; the actuator element 36 moves the transfer pockets 28 and 31, i.e. the transfer pockets 28 and 31 are mounted sliding on a fixed guide and are connected to the pushing element 36 and thus move together with the actuator element 36 (i.e. the two transfer pockets 28 and 31 always move in a synchronous manner).
  • the two transfer pockets 29 and 30 always have the same motion law (imposed by the actuator element 35) which is different from the motion law (imposed by the actuator element 36) of the two transfer pockets 28 and 31 (which always have the same motion law).
  • the moving device 34 always moves along the moving direction D1 the two actuator elements 35 and 36 in the same way and causing the two actuator elements 35 and 36 to travel respective differentiated strokes C1 and C2 (illustrated in Figures 16 , 17 , 20 and 21 ) i.e. causing the actuator elements 35 and 36 to travel different distances.
  • the moving device 34 causes the actuator element 35 (thus the transfer pockets 29 and 30) to travel a stroke C1 which is always greater in both ways with respect to a stroke C2 travelled by the actuator element 36 (thus by the transfer pockets 28 and 31).
  • the moving device 34 comprises an operating member 37 which moves the actuator element 35 along the moving direction D1 alternatively in both ways, and an operating member 38 (substantially twin of the operating member 37) which moves the actuator element 36 along the moving direction D1 alternatively in both ways.
  • the moving device 34 comprises one single common electric motor 39: the operating member 37 transmits the motion from the common electric motor 39 to the actuator element 35 and analogously the operating member 38 transmits the motion from the common electric motor 39 to the actuator element 36.
  • the operating member 37 comprises a rocker arm 40 which is hinged at the centre to a fixed frame 41 so as to rotate around a horizontal rotation axis 42 and is connected (hinged) at an upper end to the actuator element 35;
  • the operating member 38 comprises a rocker arm 43 which is arranged next to the rocker arm 40, is hinged at the centre to the fixed frame 41 so as to rotate around a horizontal rotation axis 44 (parallel to the rotation axis 42) and is connected (hinged) at an upper end to the support element 36.
  • connection arm 45 so as to rotate together around the respective rotation axes 42 and 44; i.e. the connection arm 45 is hinged to the lower ends of the two rocker arms 40 and 43 (on the opposite side of the actuator elements 35 and 36 with respect to the rotation axes 42 and 44) so as to make the two rocker arms 40 and 43 angularly integral to one another.
  • the common electric motor 39 transmits the rotation movement only to the rocker arm 40 (which in turn transmits the rotation movement to the other rocker arm 43 through the connection arm 45) by means of an eccentric arm 46 which is hinged to a lever 47 angularly integral to the rocker arm 40.
  • the operating member 37 comprises a first electric motor and the operating member 38 comprises a second electric motor separate from and independent of the first electric motor.
  • the operating member 38 comprises a second electric motor separate from and independent of the first electric motor.
  • the insertion device 32 comprises two pushing elements 48 which are arranged in the area of the input station S6 and are movable perpendicularly to the moving direction D1 along a main horizontal direction D2; furthermore, the extracting device 33 comprises two pairs of pushing elements 49 which are arranged in the area of the output stations S7 and S8 and are movable perpendicularly to the moving direction D1 along the main horizontal direction D2.
  • the transfer assembly C comprises a rigid common support element 50 which supports both the two pushing elements 48 of the input station S6, and the two pairs of pushing elements 49 of the output stations S7 and S8; in this manner all the pushing elements 48 and 49 always move together with the same motion law.
  • the transfer assembly C comprises a moving device 51 (partially illustrated in Figure 13 and using an articulated quadrilateral) which alternatively moves the support element 50 both along the main horizontal direction D2, which is perpendicular to the moving direction D1, and along a secondary vertical direction D3, which is perpendicular to the main direction D2 and perpendicular to the moving direction D1.
  • the moving device 51 causes the support element 50 (thus the pushing elements 48 and 49 carried by the support element 50) to travel a work stroke (in which the pushing elements 48 and 49 push respective wraps 3) by moving the support element 50 only along the main direction D2 and causes the support element 50 to travel a return stroke (in which the pushing elements 48 and 49 do not touch any wrap 3) by moving the support element 50 in the secondary direction D3 and downwards, then in the main direction D2 with an opposite way relative to the work stroke and, finally, in the secondary direction D3 and upwards.
  • the support element 50 lowers so as not to interfere with the wraps 3.
  • the transfer pockets 28, 29, 30 and 31 have at the bottom a slit through which a thin stem passes which connects the pushing elements 48 and 49 to the rest of the support element 50.
  • the movement impressed on the support element 50 by the moving device 51 could be used also for completing the folding of the wraps 3; i.e. folding elements are also connected to the support element 50, said folding elements, by effect of the movement of the support element 50, perform final folding operations on the wraps 3.
  • the transfer pockets 30 and 31 are stationary and are in the input station S6 in alignment with the wrap conveyor 17 and thus ready to receive two wraps 3 which come from the wrap conveyor 17 and are arranged at the input distance I from one another; simultaneously, the transfer pockets 28 and 29 are stationary and are in the output station S7 in alignment with two respective feeding pockets 27 of the feeding conveyor and thus ready to hand over two wraps 3 to the two feeding pockets 27.
  • the pushing elements 48 and 49 travel the work stroke thereof: the pushing elements 48 insert two wraps 3, which are arranged at the input distance I from one another, into the transfer pockets 30 and 31 which are in the input station S6 and simultaneously the pushing elements 49 extract two wraps 3 which are arranged at the output distance O from one another, from the transfer pockets 28 and 29 which are in the output station S7 and insert the two wraps 3 into two corresponding feeding pockets 27 of the feeding conveyor 26.
  • the two pushing elements 49 of the output station S8 travel the work stoke thereof which is carried out loadless though since the transfer pockets 30 and 31 are not present in the output station S8.
  • the transfer pockets 28 and 29 are stationary and are in the input station S6 in alignment with the wrap conveyor 17 and thus ready to receive two wraps 3, which are arranged at the input distance I from one another and come from the wrap conveyor 17; at the same time, the transfer pockets 30 and 31 are stationary and are in the output station S8 in alignment with two corresponding feeding pockets 27 of the feeding conveyor 26 and thus ready to hand over two wraps 3 (arranged at the output distance O from one another) to the feeding pockets 27.
  • the pushing elements 48 and 49 carry out their work stroke: the pushing elements 48 insert two wraps 3, which are arranged at the input distance I from one another, into the transfer pockets 28 and 29 which are in the input station S6 and simultaneously the pushing elements 49 extract two wraps 3 which are arranged at the output distance O from one another from the transfer pockets 30 and 31 which are in the output station S8 and insert the two wraps 3 into respective feeding pockets 27 of the feeding conveyor 26.
  • the two pushing elements 49 of the output station S7 carry out the work stroke thereof which is carried out loadless though since the transfer pockets 28 and 29 are not present in the output station S7.
  • the feeding conveyor 26 carries out the feed steps thereof so as to move, from the output stations S7 and S8 and towards the exchange station S5, the full (i.e. containing respective wraps 3) feeding pockets 27 and replace, in the output stations S7 and S8, the full feeding pockets 27 with as many empty feeding pockets 27.
  • the feeding conveyor 26 moves along the feeding path P3, travelling a stroke, which is equal to the output distance O, at a double rate relative to the movement of the extracting device and of the insertion device 32 (i.e. relative to a movement of the pushing elements 48 and 49 which are mounted on the same common support element 50).
  • the feeding conveyor 26 has to move along the feeding path P3, travelling a stroke, which is equal to the output distance O, at a rate of 500 times per minute carrying each time a feeding pocket 27 containing a wrap 3 into the exchange station S5.
  • FIGS 22-25 illustrate a simplified version of the transfer unit C, in which instead of four transfer pockets 28, 29, 30 and 31 connected to the two actuator elements 35 and 36, only one transfer pocket 30 connected to the actuator element and one transfer pocket 31 connected to the support element 36 are present; i.e. the transfer pockets 28 and 29 have been disassembled (eliminated). Consequently, only the input station S6 and the output station S8 (which remains the only one since the output station S7 is no longer provided) are used.
  • the transfer pockets 30 and 31 are stationary and are in the input station S6 in alignment with the wrap conveyor 17 and thus ready to receive two wraps 3 coming from the wrap conveyor 17 and are arranged at the input distance I from one another.
  • the pushing elements 48 and 49 travel the work stroke thereof: the pushing elements 48 insert two wraps 3, which are arranged at the input distance I from one another, into the transfer pockets 30 and 31 which are in the input station S6, whereas the two pushing elements 49 of the output station S8 travel the work stroke thereof which is carried out loadless though since the transfer pockets 30 and 31 are not present in the output station S8.
  • the transfer pockets 30 and 31 move in the same way along the moving direction D1: the transfer pocket 31 travels the shorter stroke C2, whereas the transfer pocket 30 travels the longer stroke C1 so as to move the transfer pockets 30 and 31 from the input station S6 to the output station S8.
  • the transfer pockets 30 and 31 moving from the input station S6 to the output station S8 decrease the mutual distance thereof (from the input distance I to the output distance O since the difference between the two strokes C2 and C1 is equal to the difference between the input distance I and the output distance O).
  • the transfer pockets 30 and 31 are stationary and are in the output station S8 in alignment with two corresponding feeding pockets 27 of the feeding conveyor 26 and thus ready to hand over two wraps 3 (arranged at the output distance O from one another) to the feeding pockets 27.
  • the pushing elements 48 and 49 travel the work stroke thereof: the pushing elements 48 travel the work stroke thereof loadless since the transfer pockets 30 and 31 are not present in the input station S6 and simultaneously the pushing elements 49 extract two wraps 3 which are arranged at the output distance O from one another, from the transfer pockets 30 and 31 which are in the output station S8 and insert the two wraps 3 into respective feeding pockets 27 of the feeding conveyor 26.
  • the transfer pockets 30 and 31 move in the same way along the moving direction D1: the transfer pocket 31 travels the shorter stroke C2 whereas the transfer pocket 30 travels the longer stroke C1 so as to move the transfer pockets 30 and 31 from the output station S8 to the input station S6.
  • the transfer pockets 30 and 31 moving from the output station S8 to the input station S6 increase the mutual distance thereof (from the output distance O to the input distance I).
  • the embodiment illustrated in Figures 12-21 which provides for the presence of the four transfer pockets 28, 29, 30 and 31, allows extending the pauses between the movements of the transfer pockets 28, 29, 30 and 31 along the moving direction D1 and thus allows transferring also relatively "long" (i.e. more developed along the main direction D2) wraps which need more time for entering/exiting from the transfer pockets 28, 29, 30 and 31 (due to the length thereof); on the other hand, the embodiment illustrated in Figures 12-21 , which provides for the presence of the four transfer pockets 28, 29, 30 and 31, is bulkier, i.e. has a greater development along the moving direction D1.
  • the embodiment illustrated in Figures 22-25 which provides for the presence of only two transfer pockets 30 and 31, is more compact, i.e. has a smaller development along the moving direction D1; on the other hand, the embodiment illustrated in Figures 22-25 , which provides for the presence of only two transfer pockets 30 and 31, requires shorter pauses between the movements of the transfer pockets 30 and 31 along the moving direction D1 and thus allows transferring only relatively "short" (i.e. less developed along the main direction D2) wraps 3 which need less time for entering/exiting from the transfer pockets 30 and 31 (by effect of their limited length).
  • the movement of the various components (wrap wheels, feeding conveyors, pushing elements, movable folding elements...) of the packaging machine 9 is carried out by means of respective electric motors which are mechanically independent of one another and are synchronised (i.e. moved in step) in a virtual manner (i.e. not by means of a physical constraint, but by means of a control constraint).
  • one electric motor is considered as reference ( “master” ) and all the other electric motors ( “slaves” ) track the position of the electric motor of reference ( “master” ) .
  • the linear movements i.e.
  • a rotating electric motor which leads into rotation a pinion which engages with a rack; i.e. a "pinion-rack” mechanism is used for transforming the rotary movement generated by the electric motor into a linear movement.
  • the transfer unit C described above has many advantages.
  • the transfer unit C described above allows operating at a high production speed (i.e. with a high number of wraps 3 produced in the time unit) without damaging the wraps 3.
  • the transfer unit C described above allows changing the size of the packets of cigarettes 1 in a relatively simple and fast manner.
  • the transfer unit C described above is compact and has an optimum accessibility to all the components thereof (a particularly useful characteristic during the execution of a size change).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP21179615.6A 2020-06-15 2021-06-15 Transfereinheit und verfahren zum transfer von paaren von umhüllungen, die gruppen von rauchartikeln enthalten, mit änderung des gegenseitigen abstands Active EP3925896B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102020000014167A IT202000014167A1 (it) 2020-06-15 2020-06-15 Unità e metodo di trasferimento per trasferire coppie di incarti contenenti gruppi di articoli da fumo variando la loro distanza reciproca

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EP3925896A1 true EP3925896A1 (de) 2021-12-22
EP3925896B1 EP3925896B1 (de) 2022-12-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114962574A (zh) * 2022-08-01 2022-08-30 沈阳芯达科技有限公司 一种单皮带实现增程倍速机构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903728A1 (de) * 1969-01-25 1970-08-13 Niepmann & Co Maschf Fr Zufuehreinrichtung fuer Zigaretten an Zigarettenpackmaschinen
US4258528A (en) 1978-03-11 1981-03-31 Focke & Co. Method and apparatus for introducing groups of cigarettes into a packet and folding wrapper flaps
EP3362365B1 (de) 2015-10-16 2019-09-25 G.D Societa' per Azioni Packermaschine und einwicklungsverfahren zur herstellung eines pakets mit tabakartikeln mit zwei verschiedenen gruppen von tabakartikeln

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633739A (en) 1970-02-06 1972-01-11 Riegel Paper Corp Machine for accumulating and transferring articles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903728A1 (de) * 1969-01-25 1970-08-13 Niepmann & Co Maschf Fr Zufuehreinrichtung fuer Zigaretten an Zigarettenpackmaschinen
US4258528A (en) 1978-03-11 1981-03-31 Focke & Co. Method and apparatus for introducing groups of cigarettes into a packet and folding wrapper flaps
EP3362365B1 (de) 2015-10-16 2019-09-25 G.D Societa' per Azioni Packermaschine und einwicklungsverfahren zur herstellung eines pakets mit tabakartikeln mit zwei verschiedenen gruppen von tabakartikeln

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114962574A (zh) * 2022-08-01 2022-08-30 沈阳芯达科技有限公司 一种单皮带实现增程倍速机构

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EP3925896B1 (de) 2022-12-14
IT202000014167A1 (it) 2021-12-15
PL3925896T3 (pl) 2023-03-27

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