Conveyor assembly and method for conveying articles

Abstract

A conveyor assembly (3) for cylindrical articles (2) of the tobacco processing industry; a conveyor assembly (3) configured to convey articles (2) from an input (9) to an output (10) along an intermediate section (IS ') of a path (P) having a variable length, and comprising a transport element (11) configured to accompany the articles (2) in a given direction (D), and a wall (W) provided with rectangular elements (ES) for supporting the transport element (11) from behind; in use, when the input (2) and / or the output (10) are moved, the length of the intermediate section (IS ') changes and the end (E) of the rectangular element (ES) is moved, while the deflection device (DD) deflects the end section of the rectangular element (ES) such that the end section does not extend in a given direction (D).

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims the priority of Italian patent application No. 102023000018327 filed on September 6, 2023, the entire disclosure of which is incorporated herein by reference. Technical Field

[0003] The present invention relates to a conveyor assembly and a method of conveying articles. Background Art

[0004] In the tobacco processing industry, variable capacity stores for cigarettes of the type described in patent EP 581 143 are known. These stores comprise a store path of variable length having two conveying parts wound around each other on a common axis, the conveying parts having turns of the same inclination, and a deflection device configured to move cigarettes from one part to the other and movable along the two parts so as to vary the total length of the store path.

[0005] EP838165 discloses a variable capacity storage comprising two screw conveyors arranged one above the other and connected by an intermediate element configured to transfer the product from the upper conveyor to the lower conveyor by gravity alone. Both conveyors are operated pneumatically.

[0006] This type of storage element suffers from several disadvantages, of which the following are worth mentioning.

[0007] The particular arrangement of the two conveyor sections, one inside the other, not only makes the construction and design of the storage element particularly complex and expensive, but also makes maintenance operations very complicated.

[0008] Furthermore, the storage element is not very ductile, since it is not possible to provide an input station and an output station for cylindrical objects arranged in the desired position (e.g. one at the bottom and one at the top). More particularly, according to EP581143 and EP838165, the output of the objects is located at the bottom, said position not being particularly convenient for the layout of existing machines that may be found downstream of the storage element (e.g. cigarette packing machines or a combination for combining filters and tobacco rods).

[0009] In addition, pneumatic conveyors (e.g., as disclosed in EP838165) are not so delicate to articles (especially cigarettes). In fact, this type of conveyor can not only be relatively easy to damage the articles, but also can cause particles (e.g., tobacco) to separate and disperse from the articles themselves.

[0010] Furthermore, conveying relatively delicate items, such as cigarettes, by gravity alone may result in damage to the items and / or jams.

[0011] WO2019073447A1 discloses a variable capacity storage for articles in the tobacco processing industry, comprising a conveyor assembly, the conveyor assembly comprising a first conveyor having a substantially spiral shape; a second conveyor having a substantially spiral shape and arranged above the first conveyor; a linear transfer conveyor, which is designed to convey articles upward from the first conveyor to the second conveyor, having a variable length. This type of storage has some drawbacks, among which, blockages may occur, for example due to the wrong orientation of some articles. This may lead to a pause in production even for a considerable period of time (the more severe the blockage, the longer it takes to resolve the blockage) and / or damage to the articles.

[0012] US4416368 discloses a conveyor mechanism for transferring cylindrical articles such as cigarettes, the conveyor mechanism comprising a single conveyor belt which performs the transfer from a lower level to a higher level. Unlike general-purpose conveyor belts, the surface for the transfer has a curved section and a plurality of pins protrude parallel to each other from at least one side of the belt. In the region of the curved section, the pins are held by suitable means so that the belt maintains the curvature. The cigarettes or other cylindrical articles are fed by the inner surface of the curved belt and the auxiliary conveyor belt. Summary of the invention

[0013] It is an object of the present invention to provide a conveyor assembly and a method of conveying articles which are designed to at least partially overcome the disadvantages of the prior art and which at the same time are cheap and easy to manufacture / implement.

[0014] According to the present invention, there is provided a conveyor assembly and a method of conveying articles as described in the accompanying independent claims, preferably as described in any one of the claims directly or indirectly dependent on the preceding independent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will now be described with reference to the accompanying drawings, which show non-limiting embodiments of the invention, in which:

[0016] Figures 1 to 5 is a perspective view of a continuously operating configuration of a storage member including a conveyor assembly according to the present invention;

[0017] Figure 6 yes Figure 1-5 a side view of components of a conveyor assembly;

[0018] Figure 7 yes Figure 1-5 A cross-sectional view of a detail of a conveyor assembly;

[0019] Figure 8 yes Figure 1-5 A perspective view of a conveyor assembly with some details omitted for clarity;

[0020] Fig. 9 yes Figure 6 A perspective view of a component connected to another element;

[0021] Fig.10 yes Figure 1-5 A perspective view of components of a conveyor assembly;

[0022] Fig.11 yes Figure 1-5 A perspective view of a detail of a conveyor assembly;

[0023] Fig.12 is from Fig.11 A perspective view of the bottom of the detail; and

[0024] Fig.13 and 14 yes Figure 1-5 Two perspective side views of a portion of a conveyor assembly in two different operating configurations, with some parts removed for greater clarity;

[0025] Fig.15 Shown in perspective and on a larger scale Fig.13 Details of a portion of the , with some parts removed for greater clarity and some parts in different proportions;

[0026] Fig.16 yes Fig.15 A perspective top view of a detail of the invention with some additional parts removed for greater clarity;

[0027] Fig.17 Shown on a larger scale Fig.16 Some details of

[0028] Fig.18 It is shown from the side. Figure 1-5 A perspective view of a portion of a conveyor assembly with some components removed for greater clarity;

[0029] Fig.19 Shows Fig.18 with some parts removed for clarity; and

[0030] Fig. 20 Shows Fig.18 Another part of the figure, with some parts removed for clarity. DETAILED DESCRIPTION

[0031] In the accompanying drawings (see Figure 1 ), numeral 1 generally designates a variable capacity storage element for objects 2. The storage element comprises a conveyor assembly 3 for conveying objects 2 (in particular, in bulk) from an input station 4 to an output station 5 along a path P (in particular, of variable length).

[0032] In particular, the articles 2 have a rectangular shape. More particularly, the conveyor assembly 3 is designed to convey the articles 2 in bulk (ie, in contact with each other and in multiple layers - see for example Figure 1 An enlargement of the upper part), and more particularly, the objects 2 are transported transversely (ie in a transverse direction, in particular perpendicularly to their longitudinal extension).

[0033] In particular, the object 2 is a substantially cylindrical object, in particular an object of the tobacco processing industry. For example, the object 2 is a cigarette, a cigarette filter, a cigarette filter component (rod), a tobacco rod, a cigarette cartridge and / or a component for an electronic cigarette. According to some specific and non-limiting embodiments, the object 2 is a cigarette.

[0034] The conveyor assembly 3 includes at least a transfer conveyor assembly 8 that is configured to convey articles 2 along at least a transfer section IS of a path P from an input 9 to an output 10 .

[0035] The transfer section IS has an intermediate section IS' (see in particular, FIG. 1 ) of variable length which extends at least partially upwards (in particular, substantially vertically). Figure 6 ). The transfer conveyor assembly 8 is configured to convey the articles 2 (at least partially) in a given direction D along the intermediate section IS'.

[0036] The transfer conveyor assembly 8 includes at least a transmission element 11 (in particular a belt and / or a chain), which is configured to at least partially accompany the item 2 along at least a portion of the intermediate section IS' and has a front side (surface) configured to contact at least a portion of the item 2; and a back side (surface) substantially opposite to the front side (surface).

[0037] The transfer conveyor assembly 8 comprises at least a wall W which is arranged behind the transport element 11 (i.e., on the side of the back side of the transport element 11) (in particular, the wall W is configured to support the transport element 11 from behind - on the side of the back side) and has at least a rectangular element ES (see Figure 13-16 ), the rectangular element ES extends along at least part of the middle section IS' to support the transmission element 11 from behind (ie on the side of the back of the transmission element 11). Advantageously, although not necessarily, the rectangular element ES is in contact with the back of the transmission element 11.

[0038] The rectangular element ES has an end E connected in a substantially integral manner to the input 9 or the output 10. The conveyor assembly 3 also comprises a moving assembly 12 configured to move the input 9 and / or the output 10 so as to vary the length of the intermediate section IS' and to move the end E in a given direction D (thus, in particular, due to the movement of the input 9 or the output 10 to which the intermediate section IS' is connected).

[0039] The conveyor assembly 3 (in particular, the moving assembly 12) comprises a deflection device DD (see in detail Fig.13 , 14 , 16 and Figures 18 to 20 ), the deflection device DD is configured to bend (deform) the oblong element ES (transversely) so as to change the length (of extension) of the oblong element ES in a given direction D (in particular, along the middle section IS'). In other words, the deflection device DD is configured to bend (deform) the oblong element ES (transversely) so as to change the length of the portion of the oblong element ES extending in a given direction D (in particular, along the middle section IS').

[0040] It should be noted that the movement of the end E (together with the input 9 or the output 10 ) combined with the activity of the device DD allows the length of the intermediate section IS′ to be effectively varied.

[0041] Tests have surprisingly shown that in this way (due to the presence of the oblong element ES supporting the transport element 11 from behind in combination with other features), the articles 2 are less likely to get stuck. This is believed to be due to the fact that the transport element 11 is better held in place due to the presence / activity of the oblong element ES, and therefore there is less chance of creating space for unwanted movement of the articles 2.

[0042] A rectangular element ES is an element having a rectangular shape, ie a longitudinal extension greater than its transverse extension. In particular, the longitudinal extension is at least twice as large as the transverse extension.

[0043] According to some non-limiting embodiments, the transfer conveyor assembly 8 is configured to convey the articles 2 (at least partially) upwardly along the intermediate section IS'. In this case, the problem of jamming is particularly severe and difficult to resolve.

[0044] Surprisingly, even in this case, the combination of the features described above makes it possible to significantly reduce misorientations of the objects.

[0045] In particular, the deflection device DD is configured to bend (deform) the oblong element (transversely) so as to move an end section of the oblong element ES opposite the end E away from (and / or closer to) the intermediate section IS'.

[0046] More precisely, although not necessarily, in use, when the moving assembly 12 moves the input portion 9 (and / or the output portion 10) to reduce the length of the intermediate segment IS, the end segments of the oblong element ES move away from the intermediate segment IS'. In addition or alternatively, in use, when the moving assembly 12 moves the input portion 9 (and / or the output portion 10) to increase the length of the intermediate segment IS, the end segments of the oblong element ES move closer to the intermediate segment IS'.

[0047] In particular, the deflection device DD is constructed to bend (deform) the rectangular element ES (transversely) so that (at least) the end section does not extend in a given direction D (in particular, so as to thereby also change the length of the part of the rectangular element ES extending in the given direction D).

[0048] Alternatively or additionally, the deflection device DD is configured to bend (deform) the rectangular element ES (transversely) so that (at least) the end section extends in one or more directions different from the given direction D (in particular, so as to thereby also change the length of the part of the rectangular element ES extending in the given direction D).

[0049] According to some non-limiting embodiments, the moving assembly 12 is configured to move the end E towards and away from the deflection device DD (in particular, by moving the end E in a given direction D). In other words, the moving assembly 12 is configured to move the input portion 9 (and / or the output portion 10) towards and away from the deflection device DD (in particular, by moving the end E in a given direction D).

[0050] Advantageously, although not necessarily, the deflection device DD comprises (in particular is) a winder configured to wind the end sections of the oblong element ES (when the length of the intermediate section IS' decreases) and to unwind the end sections of the oblong element ES (when the length of the intermediate section IS' increases).

[0051] In this way, in addition to being less likely to cause blockages (as described above), the transfer conveyor assembly 8 has a particularly compact, simple, effective and reliable structure. Among them, it should be noted that when the end section of the rectangular element ES is wound, it can cause less interference with other parts of the machine and can be accommodated in a specific and limited space.

[0052] According to some non-limiting embodiments, the winding machine comprises a winding roller WR around which the end sections of the rectangular element are wound in use, and an actuator (for example a spring or an electric motor of known type and not shown) for rotating the winding roller WR around its own axis.

[0053] Advantageously, although not necessarily, the transfer conveyor assembly 8 comprises at least a further wall W' configured to support the transport element 11 from behind (i.e. on the side of its back side) and at least a further oblong element ES' having a further end E' connected in a substantially integral manner to the output 10. In these cases, the moving assembly 12 comprises a further deflection device DD' configured to bend the further oblong element ES' so that an end section of the oblong element ES' does not extend in a given direction D and, in particular, to thereby vary the length of the oblong element ES' in a given direction D. Furthermore (also in these cases), the first end E is connected in a substantially integral manner to the input 9; and the oblong element ES and the further oblong element ES' are arranged continuously along the intermediate section IS'.

[0054] In this way, the intermediate section IS′ can vary its extension from its two ends and can thus be better adapted to different geometries of the storage element 1 .

[0055] An oblong element ES' is an element having an oblong shape, ie a longitudinal extension which is greater than its transverse extension. In particular, the longitudinal extension is at least twice as great as the transverse extension.

[0056] In particular, the deflection device DD' is configured to bend (deform) the further oblong element ES' (transversely) in order to move an end section of the oblong element ES' opposite the end E' away from and / or closer to the intermediate section IS'.

[0057] Advantageously, although not necessarily, the deflection device DD' comprises (in particular is) a further winding machine configured to wind the end sections of the further rectangular element ES' (when the length of the intermediate section IS' decreases) and to unwind the end sections of the rectangular element ES' (when the length of the intermediate section IS' increases).

[0058] In this way, in addition to being less likely to cause blockages (as described above), the transfer conveyor assembly 8 also has a particularly compact, simple, effective and reliable structure. Among them, it should be noted that when the end sections of the rectangular element ES and the end sections of the rectangular element ES' are wound, they can be accommodated in a specific and limited space.

[0059] According to some non-limiting embodiments, the further winder (of the deflector DD') comprises a winding roller WR' around which the end sections of the rectangular element are wound in use, and an actuator (for example a spring or an electric motor of known type and not shown) for rotating the winding roller WR' around its own axis.

[0060] In particular, the winding roller WR and the winding roller WR' are arranged adjacent to each other. Additionally or alternatively, the axis of the winding roller WR and the axis of the winding roller WR' are parallel to each other.

[0061] According to some non-limiting embodiments, the transfer conveyor assembly 8 includes two boxes c, in each of which a corresponding winding roller WR and WR' is installed. In particular, Fig.19 shows a box c, from which the rectangular element ES and the rectangular element ES' emerge, and Fig. 20 A winding roller WR' is shown, from which an oblong element ES' extends (box c is removed for greater clarity).

[0062] Advantageously, although not necessarily, the oblong element ES comprises (in particular, is) a metal strip, in particular a metal strip made of steel (more particularly stainless steel). In addition or alternatively, the further oblong element ES' comprises (in particular, is) a metal strip, in particular a metal strip made of steel (more particularly stainless steel).

[0063] Tests have shown that these materials ensure sufficient ease of use and durability for the specified use.

[0064] Alternatively or additionally, the oblong element ES (and / or the further oblong element) comprises (in particular is) a roller blind.A roller blind comprises a plurality of slats arranged in parallel and in succession and articulated to one another.

[0065] According to some non-limiting embodiments, the thickness of the oblong element ES ranges from about 0.1 mm (particularly, from about 0.2 mm; more particularly, from about 0.25 mm) to about 0.5 mm (particularly, to about 0.4 mm; more particularly, to about 0.35 mm). In addition or alternatively, the thickness of the additional oblong element ES' ranges from about 0.1 mm (particularly, from about 0.2 mm; more particularly, from about 0.25 mm) to about 0.5 mm (particularly, to about 0.4 mm; more particularly, to about 0.35 mm).

[0066] Surprisingly, these measures make it possible to ensure sufficient support for the transmission element 11 while ensuring the possibility of deforming (winding) it in a sufficient manner.

[0067] In particular, the oblong element ES is made of steel, more in particular stainless steel. Additionally or alternatively, the further oblong element ES' is made of steel, more in particular stainless steel.

[0068] Advantageously, although not necessarily, the oblong element ES has an elastic modulus (Young's modulus) of at least about 170 GPa; in particular, the oblong element ES is made of C72 UNI (standard designation of Italian standard) 10270-1 and / or 52SiCrNi5UNI 10270-2 spring steel and / or ASTM-A36 steel and / or AISI 301 steel and / or the like. Additionally or alternatively, the further oblong element ES' has an elastic modulus (Young's modulus) of at least about 170 GPa; in particular, the further oblong element ES' is made of C72 UNI 10270-1 and / or 52SiCrNi5UNI 10270-2 spring steel and / or ASTM-A36 steel and / or AISI 301 steel and / or the like.

[0069] According to a particular but non-limiting embodiment, the rectangular element ES (and the rectangular element Es') is made of AISI 301 steel.

[0070] Advantageously, although not necessarily, the transfer conveyor assembly 8 comprises two guides R (see in particular Fig.18 , 16 and 17), the two guides extending in a given direction D along at least a portion of the intermediate section IS' and being configured to each receive a (longitudinal) side edge of the oblong element ES and allow the (longitudinal) side edge of the oblong element ES to slide therein. In particular, each guide has a sliding channel configured to receive a side edge of the oblong element ES and allow the side edge of the oblong element ES to slide therein. More particularly, the width of the guides ranges from about 0.3 mm (particularly, from about 0.4 mm; more particularly, from about 0.45 mm) to about 1 mm (particularly, to about 0.9 mm; more particularly, to about 0.8 mm; even more particularly, to about 0.75 mm).

[0071] Tests have shown that in this way the oblong element ES remains surprisingly in place.The guide R (in particular made of stainless steel) also makes it possible to correctly handle the movement of the oblong element ES in a given direction D (unwinding / reeling).

[0072] Additionally or alternatively, the transfer conveyor assembly 8 comprises two guides R extending in a given direction D along at least a portion of the intermediate section IS' and configured to each receive a (longitudinal) side edge of an additional rectangular element ES' and to allow the (longitudinal) side edge of the additional rectangular element ES' to slide in the two guides R. In particular, each guide R has a sliding channel configured to receive a side edge of the rectangular element ES' and to allow the side edge of the rectangular element ES' to slide in the sliding channel.

[0073] Tests have shown that, in this way, the oblong element ES remains surprisingly in place. The guide R also makes it possible to correctly handle the movement of the oblong element ES' in a given direction D (unwinding / reeling).

[0074] In order to better understand the structure of the transfer conveyor 8, the rectangular plates ES and ES' and the guide R, particular reference may be made to Figure 15-20 . Fig.18 The rectangular plates ES and ES' are shown, their side edges being received in corresponding guides R, while Fig.19 , the guide R is removed.

[0075] although Figure 15-17 The (separate) upper part of the transfer conveyor 8 (and, therefore, the rectangular element ES') is shown, but what is shown also applies to the lower part of the transfer conveyor 8 (and, therefore, to the rectangular element ES). The two parts are similar (but, of course, have different orientations).

[0076] According to some non-limiting embodiments, the conveyor assembly 3 comprises a conveyor 6 for conveying articles 2 from an input station 4 along a section S1 of a path P. A transfer conveyor assembly 8 is configured to convey articles 2 from the conveyor 6 along a transfer section IS of the path P (in particular, having a substantially linear portion), and has an input section 9 arranged in the region of the section S1 to receive the articles 2 from the conveyor 6.

[0077] Advantageously, although not necessarily, the conveyor assembly 3 further comprises a conveyor 7 for conveying the articles 2 to the output station 5 along the section S2 of the path P. In these cases, the transfer conveyor assembly 8 is configured to convey the articles 2 from the conveyor 6 to the conveyor 7 along a transfer section IS (in particular, a substantially linear transfer section) of the path P, and has an input section 10 arranged in the region of the section S2 for feeding the articles to the conveyor 7.

[0078] In particular, conveyors 6 and 7 (and in some cases, transfer conveyor assembly 8) are endless conveyors.

[0079] According to some non-limiting embodiments, a transfer conveyor assembly 8 is disposed between conveyor 6 and conveyor 7 .

[0080] Advantageously, although not necessarily, the transfer conveyor assembly 8 is arranged on the side of the conveyors 6 and 7 .

[0081] Advantageously, although not necessarily, the transfer conveyor assembly 8 is configured to convey the articles 2 upwardly.

[0082] In particular, the section S1 (in particular, which has a substantially spiral shape) extends from the input station 4 to the input portion 9. The section S2 (in particular, which has a substantially spiral shape) extends from the output portion 10 to the output station 5.

[0083] According to some non-limiting embodiments, the moving assembly 12 is configured to move the transfer conveyor assembly 8 so as to move the input portion 9 and the output portion 10 along the conveyor 6 and the conveyor 7, respectively. In particular, the moving assembly 12 is also (therefore) configured to change the length of (the transfer segment IS and) the segment S1 and the segment S2.

[0084] By lengthening the sections S1 and S2 , the length of the path P (and therefore the capacity of the storage element 1 ) is increased; by shortening the sections S1 and S2 , the length of the path P (and therefore the capacity of the storage element 1 ) is reduced.

[0085] According to some non-limiting embodiments (e.g., Fig.11 and 12 ), the conveyor assembly 3 includes an engagement device 9', which is configured to allow the article 2 to be transferred from the conveyor 6 to the transfer conveyor assembly 8 and to be movable on the conveyor 6. In some cases, the conveyor assembly 3 also includes an engagement device 10', which is configured to allow the article 2 to be transferred from the transfer conveyor assembly 8 to the conveyor 7 and to be movable on the conveyor 7.

[0086] In particular, the engaging device 9 ′ comprises at least two centering elements 9 ″ which are arranged on opposite sides of the conveyor 6 in order to reduce lateral movements of the engaging device 9 ′ relative to the conveyor 6 .

[0087] In particular, the engaging device 10 ′ comprises at least two centering elements 10 ″ which are arranged on opposite sides of the conveyor 7 in order to reduce lateral movements of the engaging device 10 ′ relative to the conveyor 7 .

[0088] Each centering element 9 ″ comprises at least a first roller (in particular, at least a roller bearing), and / or each centering element 10 ″ comprises at least a second roller (in particular, at least a roller bearing).

[0089] Tests have shown that in this way it is possible to obtain a more stable and reliable connection (more precise relative position) of the transfer conveyor assembly 8 to the conveyors 6 and / or 7 and a reduction in jamming incidents.

[0090] Advantageously, although not necessarily, the conveyor assembly 3 comprises an engaging device 9 ′ and an engaging device 10 ′.

[0091] According to some preferred but non-limiting embodiments, the engagement means 9' and 10' are substantially identical. In this regard, it should be noted that Fig.11 and12 Both an engagement device 9 ′ and an engagement device 10 ′ are shown.

[0092] In particular, the moving assembly 12 ( Figure 1-5 ) is configured to move the transfer conveyor assembly 8 so as to move the engaging device 9' and / or the engaging device 10' along the conveyor 6 and the conveyor 7, respectively.

[0093] In particular, said intermediate section IS' extends upwards, more particularly, is substantially vertical.

[0094] Advantageously, although not necessarily, the intermediate section IS' is substantially linear.

[0095] According to some non-limiting embodiments, the transmission element 11 comprises (is) a rectangular element closed on itself. In particular, the transmission element 11 comprises (is) a belt and / or a chain.

[0096] Due to the presence of the transport element 11, the risk of jamming of the articles 2 along the transfer section IS and the risk of damaging the articles 2 are reduced when the articles 2 are transported along the transfer section IS in use. Due to the transport element 11, it is also possible to feed the articles 2 from the conveyor 6 arranged at the bottom to the conveyor 7 arranged at the top.

[0097] Advantageously, although not necessarily, the transport element 11 is configured to move (at least partially) the articles 2 along (with the articles) the transfer section IS.

[0098] In particular, the transfer section IS extends between the input 9 and the output 10 (more particularly, from the input 9 to the output 10 ).

[0099] The input section 9 and the output section 10 are movable along the conveyor 6 and the conveyor 7, respectively.

[0100] In particular, each conveyor 6 and each conveyor 7 has at least one corresponding turn (e.g., spiral and / or loop). Advantageously, although not necessarily, each conveyor 6 and each conveyor 7 has a plurality of corresponding turns (loops). In other words, each conveyor 6 and each conveyor 7 is wound around itself so as to be provided with a plurality of turns (loops). More particularly, the winding direction of the conveyor 6 is opposite to the winding direction of the conveyor 7. For example, if the winding direction of the conveyor 7 (seen from above) is clockwise, the winding direction of the conveyor 6 (usually seen from above) is counterclockwise.

[0101] Advantageously, although not necessarily, the conveyor 6 has a plurality of first turns (loops) and the second conveyor 7 has a plurality of second turns (loops) having the same radius and the same distance as the first turns.

[0102] According to a specific non-limiting embodiment, the conveyor 6 has a plurality of turns of constant radius and distance; the conveyor 7 has a plurality of turns of constant radius and distance. More precisely, the conveyor 6 has at least a section having a (cylindrical) spiral shape with constant radius and distance; the conveyor 7 has at least a section having a (cylindrical) spiral shape with constant radius and distance.

[0103] According to an alternative and not shown embodiment, each turn comprises two curved end portions and two linear central portions. In these cases, for example, the turn extends around two rollers with parallel axes (see, for example, EP738478 of the applicant). Figure 1 ).

[0104] Advantageously, although not necessarily, the transfer conveyor assembly 8 comprises a pulley 13 (or alternatively a suitably shaped, e.g. "U"-shaped - a sliding plane or a combination of pulley 13 and a sliding plane) and a pulley 14 around which the transmission element 11 is partially wound.

[0105] In particular, the storage element 1 (more precisely, the transfer conveyor assembly 8) comprises at least an operating assembly (of a type known per se and not shown) for rotating at least one of the pulleys 13 and 14. More particularly, it should be noted that the transfer conveyor assembly 8 is constructed in such a way that the output 10 is arranged approximately in the region (more precisely, at the height) of the pulley 14, while the input 9 is arranged in the region (more precisely, at the height) of the pulley 13 (or of the sliding plane replacing the pulley 13).

[0106] According to some non-limiting embodiments, the aforementioned operating assembly comprises (is) a motor and / or a kinematic mechanism connected to other components of the storage element 1 .

[0107] Advantageously, although not necessarily, the storage element 1 (in particular, the transfer conveyor assembly 8; more particularly, the moving assembly 12) includes an actuator assembly (which is of a known type and not shown) for moving the coupling device 9' and the coupling device 10' (as well as the pulley 13 and the pulley 14) towards and away from each other, in particular in the direction of the longitudinal extension (of the middle part) of the transfer section IS (more particularly, in a substantially vertical direction).

[0108] According to some non-limiting embodiments, the aforementioned actuator assembly comprises (is) a motor (eg an electric motor) and / or a kinematic mechanism connected to other components of the storage element 1 .

[0109] In particular, the aforementioned actuator assembly is configured to change the distance between the engagement device 9' and the engagement device 10' (and between the pulleys 13 and 14) in accordance with (proportionately) the difference between the speeds at which the conveyors 6 and 7 convey the articles 2. More particularly, the actuator assembly is configured to change the distance between the engagement device 9' and the engagement device 10' (and between the pulleys 13 and 14) in proportion to the difference between the speeds at which the conveyors 6 and 7 convey the articles 2.

[0110] According to some non-limiting embodiments, the transmission element 11 includes an active section AT with a variable length, the active section AT extending along the transfer section IS (the middle section IS') between the input part 9 and the output part 10 (in particular, between the coupling device 9' and the coupling device 10'; in particular, between the pulley 13 and the pulley 14); and a passive section PT arranged on the opposite side of the rectangular element ES (and the pulley 13 and the pulley 14) relative to the active section AT (in other words, the rectangular element ES is arranged - the pulley 13 and the pulley 14 are arranged - between the active section AT and the passive section PT).

[0111] In particular, the passive section PT is arranged on the opposite side of the further rectangular element ES' (and the pulleys 13 and 14) relative to the active section AT (in other words, the rectangular element ES' is arranged - and the pulleys 13 and 14 are arranged - between the active section AT and the passive section PT).

[0112] Advantageously, although not necessarily, the passive section PT extends between pulley 13 and pulley 14 and partially surrounds at least another pulley 15 of the transfer conveyor assembly 8, the transfer conveyor assembly 8 including a further actuator assembly (also known and not shown) for moving the pulley 15 (away from and toward the transfer section IS).

[0113] Note that advantageously, the relative movement between pulleys 13 and 14 and the movement of pulley 15 are linked so that one compensates the other (and the transmission element 11 always remains correctly stretched). In other words, when the active section AT shortens a given length, the passive section PT lengthens said given length, and vice versa (compensating each other).

[0114] In some non-limiting cases, the further actuator assembly comprises a kinematic mechanism that transmits the relative movement (more precisely, displacement) of pulleys 13 and 14 to pulley 15 according to a defined ratio (eg 1 to 1).

[0115] Alternatively, the further actuator assembly comprises (is) a motor (e.g. an electric motor). In these cases, the operation of the actuator assembly (for moving the engagement means 9' and engagement means 10' and the pulleys 13 and 14) and the further actuator assembly (for moving the pulley 15) is coordinated by the control unit.

[0116] In particular, the transfer conveyor assembly 8 comprises at least a pulley 15 and at least two fixed pulleys (known and not shown - usually arranged one above the other). More precisely, although not necessarily, the pulley 15 is arranged between the two fixed pulleys (at an intermediate height) and is movable towards and away from the fixed pulleys (horizontally). The relative movement between the pulley 15 on the one hand and the fixed pulleys on the other hand compensates the relative movement between the pulley 13 and the pulley 14 (when the active section AT is shortened, by lengthening the passive section PT and vice versa).

[0117] According to some specific and non-limiting embodiments (similar to the one shown here), the transfer conveyor assembly 8 comprises at least two pulleys 15 and at least three fixed pulleys (known and not shown). In these cases, the relative movement between the pulleys 15 on the one hand and the fixed pulleys on the other hand compensates the relative movement between the pulleys 13 and 14 (by lengthening the passive section PT when the active section AT is shortened and vice versa).

[0118] Advantageously, although not necessarily, the transfer conveyor assembly 8 comprises at least a further propulsion device 16, which faces the transport element 11 and is configured to move along the intermediate section IS' (in particular, to cooperate with the transport element 11; more precisely, at the same speed as the transport element 11). In particular, the transport element 11 and the propulsion device 16 are designed to clamp the article 2 between them and to at least partially accompany the article 2 (move the article) along the transfer section IS.

[0119] More precisely, the propulsion device 16 comprises (is) a belt and / or a chain.

[0120] Advantageously, although not necessarily, the transfer conveyor assembly 8 comprises a motor (an electric motor of a known type and not shown) to operate (rotate) one of the pulleys 16', and a different motor (an electric motor of a known type and not shown) to operate (rotate) one of the pulleys 14 and 13 (in particular the pulley 14). In particular, the storage element 1 (more precisely, the transfer conveyor assembly 8) comprises a control unit configured to operate the two motors in a coordinated manner so that the speed of the transmission element 11 and the speed of the propulsion device 16 are identical to each other (even when the pulleys 13 and 14 move away from or towards each other). For example, in use, when the pulleys 13 and 14 move away and the rotation speed of the pulley 16' remains constant (so as not to change the movement speed of the items 1 along the transfer section IS), the rotation speed of the pulley 14 is reduced.

[0121] According to some alternative and non-limiting embodiments, the propulsion device 16 is arranged around a pair of pulleys 16' (one of which is Figure 1-6 In the figure, the other Fig.13 In particular, one of the pulleys 16' is connected to at least one of the pulleys 14 and 13 by means of a kinematic mechanism (known and not shown), which (connected to the motor) is configured to transmit the rotational movement from the pulleys 13 and 14 to the pulley 16', so that the speed of the transmission element 11 and the speed of the propulsion device 16 are identical to each other.

[0122] Due to the push device 16, the risk of jamming of the articles 2 along the transfer section IS and the risk of damaging the articles 2 are further reduced when the articles 2 are conveyed along the transfer section IS in use. Due to the push device 16, it is also possible to improve the feeding of the articles 2 from the conveyor 6 arranged at the bottom to the conveyor 7 arranged at the top.

[0123] According to some non-limiting embodiments, the transfer conveyor assembly 8 comprises a plate 17 on which the aforementioned pulleys (pulley 16' and fixed pulley) are mounted. In particular, the plate 17 has a slot 18 which serves as a guide for the pulleys 13 and 14. In other words, in use, the pulleys 13 and 14 each slide along their respective slots 18.

[0124] Alternatively or additionally, the transfer conveyor assembly 8 comprises two flat supports 19 on which the pulleys 13 and 14 are respectively (rotatably) mounted. More precisely, the aforementioned actuator assembly (not shown) is configured to move the flat supports 19.

[0125] In some cases, the flat support 19 may slide along the slot 18, or be movable along a linear guide. Movement of the flat support 19 may be obtained, for example, by means of a linear actuator and / or a kinematic mechanism connected to other components of the storage 1 .

[0126] Additionally or alternatively, the plate 17 has slots 20 which act as guides for the pulley(s) 15. In other words, the pulley(s) 15 slide along the respective slots 20 in use.

[0127] Alternatively or additionally, the pulley 15 is mounted on a slide movable along a linear guide. The movement of this slide can be obtained, for example, by means of a linear actuator and / or a kinematic mechanism connected to other components of the storage 1 .

[0128] Advantageously, although not necessarily, the engaging means 9 ′ and 10 ′ are moved in an integral manner to the respective pulleys 13 , 14 in the direction of the longitudinal extension of the transfer section IS.

[0129] In some non-limiting embodiments, Fig.15 In the embodiment shown, the end E and the end E' are connected (in an integral manner) to the input part 9 (in particular to the engaging device 9') and the output part 10 (in particular to the engaging device 10') by means of a respective flat support 19. More precisely, the end E and the end E' are integrally connected to the flat support 19, which in turn is mounted on the engaging device 9' and the engaging device 10', respectively.

[0130] According to some non-limiting embodiments, the transfer conveyor assembly 8 further comprises a deflection belt 21 arranged in the region of the pulley 13 for guiding the articles 2 from the input section 9 in the transfer section IS (changing the advancement direction of the articles 2). In addition or alternatively, the transfer conveyor assembly 8 further comprises a deflection belt 22 arranged in the region of the pulley 14 for guiding the articles 2 from the transfer section IS towards the output section 10 (changing the advancement direction of the articles 2).

[0131] In particular, the deflection belts 21 and 22 are movable relative to each other in a manner integral with the pulleys 13 and 14, respectively. According to some non-limiting embodiments, the deflection belts 21 and 22 are each mounted on a respective flat support 19.

[0132] Advantageously, although not necessarily, the conveyor 6 and the conveyor 7 are arranged so that one is (at least partially) above the other. In particular, the conveyor 7 is (at least partially) arranged above the conveyor 6 (and the output station 5 is arranged higher than the input station 4). By doing so, it is possible to place the output part 10 in a relatively high position relative to the input part 9.

[0133] In some non-limiting cases, the output station 5 is arranged (higher than the input 9 and) higher than the input station 4. In particular, the output station 5 is arranged higher than the output 10, which is in turn arranged higher than the input 9, which is arranged higher than the input station 4.

[0134] More precisely, (the conveyors 6 and 7 are arranged such that) the section S1 and the section S2 are substantially coaxial with each other.

[0135] According to some non-limiting embodiments, the aforementioned intermediate section IS′ is (linear and) substantially parallel to the axis A around which the sections S1 and S2 are wound.

[0136] According to a specific non-limiting embodiment, the transfer section IS also has two connecting portions SC1 and SC2 (the two connecting portions SC1 and SC2 are partially transverse to, in particular perpendicular to, the intermediate section IS'), the two connecting portions SC1 and SC2 extending between the intermediate section IS' and the sections S1 and S2, respectively. The transfer conveyor assembly 8 is configured to also convey the articles 2 along the connecting portions SC1 and SC2.

[0137] More precisely, although not necessarily, the connecting portions SC1 and SC2 extend substantially horizontally.

[0138] According to some non-limiting embodiments, the transfer conveyor assembly 8 comprises a conveyor having a (substantially horizontal) movable transport element in the region of the connecting portions SC1 and SC2 .

[0139] According to some non-limiting embodiments, the transfer segment IS has two curved junction portions connecting the intermediate segment IS′ to the portions SC1 and SC2 .

[0140] Advantageously, although not necessarily, the moving assembly 12 is configured to rotate the transfer conveyor assembly 8 about the axis A.

[0141] In use, when the moving assembly 12 rotates the transfer conveyor assembly 8 about the axis A, the input part 9 (more precisely, the engagement device 9') moves (slides) along the conveyor 6 and the output part 10 (more precisely, the engagement device 10') moves (slides) along the conveyor 7. In order for the input part 9 to follow the conveyor 6 and the output part 10 to follow the conveyor 7, the distance between the pulley 13 and the pulley 14 is changed.

[0142] Figures 1 to 5The storage element 1 is shown in a continuous operating phase when the storage element 1 is filled. These figures illustrate the information disclosed above, namely that the rotational movement is also associated with a change in the length of the transfer section IS, in particular the change in the length of the intermediate section IS' (in other words, the change in the distance between the engagement means 9' and the engagement means 10' and the change in the distance between the pulleys 13 and 14).

[0143] like Fig.10 As better shown in FIG. 1 , conveyor 6 comprises at least a motorized pulley 23 and conveyor 7 comprises at least a motorized pulley 24. Pulley 23 and pulley 24 are designed to allow a transport element 25 and a transport element 26 to move respectively along sections S1 and S2 (as well as along the corresponding return sections). Section S1 and the corresponding return sections together define a path that is closed on itself (usually an endless conveyor). Section S2 and the corresponding return sections together define a path that is closed on itself (usually an endless conveyor).

[0144] According to some non-limiting embodiments, the transmission element 25 is a belt and / or a chain. Advantageously, although not necessarily, the transmission element 25 is a chain. More precisely, the transmission element 25 is a chain such as disclosed in US6364094 and / or WO2013141807.

[0145] According to some non-limiting embodiments, the transmission element 26 is a belt and / or a chain. Advantageously, although not necessarily, the transmission element 26 is a chain. More precisely, the transmission element 26 is a chain such as disclosed in US6364094 and / or WO2013141807.

[0146] The transport elements 25 and 26 allow delicate handling of the objects 2 .

[0147] Advantageously, although not necessarily, the conveyor 6 comprises ( Figure 7 )Guide (track) 27.

[0148] In particular, the transmission element 25 is configured to slide on the guide 27 .

[0149] According to some non-limiting embodiments, the guide 27 is provided with a recess 28, inside which the (lower) protrusion of the transmission element 25 extends. Due to this structure, the element 25 follows the guide 27 and moves along the section S1. At this point, it should be noted that the guide 27 extends along the path S1; more precisely, the guide 27 has the shape of the path S1 (and defines the path S1).

[0150] Additionally or alternatively, the conveyor 7 comprises a guide (track) 29 .

[0151] In particular, the transmission element 26 is configured to slide on the guide 29 .

[0152] According to some non-limiting embodiments, guide 29 has a structure and function similar to guide 27. Guide 29 extends along path S2; more precisely, guide 29 has the shape of path S2 (and defines path S1).

[0153] Advantageously, although not necessarily, the first centering element 9″ (in particular, Fig.11 and 12 ) is arranged on the opposite side of the guide member 27 and is substantially in contact with the guide member 27.

[0154] Additionally or alternatively, the centering element 10 ″ is arranged on the opposite side of the guide 29 and is substantially in contact with the guide 29 .

[0155] Specific reference Figure 8 According to some non-limiting embodiments, the storage element 1 also comprises a main support structure 30 which carries the conveyors 6 and 7 (more precisely the guides 27 and 29 ) and the transfer conveyor assembly 8 .

[0156] According to some non-limiting embodiments, the main support structure 30 includes a base 31 and a support column 32 protruding (vertically) from the base 31. In particular, the column 32 extends parallel to the axis A; more particularly, the column 32 extends along the axis A (in other words, the axis A is also the longitudinal axis of the column 32). More precisely, the column 31 has a vertical orientation.

[0157] According to some non-limiting embodiments, the main support structure 30 also includes a support assembly 33 and a support assembly 34, wherein the support assembly 33 is fixed on the column 32 and carries the conveyor 6 (more precisely, the guide 27), and the support assembly 34 is fixed on the column 32, is spaced apart from the support assembly 33 and carries the conveyor 7 (more precisely, the guide 29).

[0158] Furthermore, in some cases (such as the case shown here), the main support structure 30 also includes a bearing 35, in particular, the bearing 35 is inserted between the support assembly 33 and the support assembly 34 and is carried by the support assembly 33. The bearing 35 is part of the moving assembly 12. More precisely, the bearing 35 includes a fixed part 36 mounted on the support assembly 33 and a movable part 37, the movable part 37 being configured to rotate around the axis A and carrying the transfer conveyor assembly 8. In more detail, the transfer conveyor assembly 8 is mounted so as to be integral with the bearing 35 (more precisely, with the movable part 34) by means of two arms 38.

[0159] According to some non-limiting embodiments, the moving assembly 12 comprises at least a motor (of a known type and not shown) configured to move the transfer conveyor assembly 8 (more precisely, to rotate the transfer conveyor assembly 8 around the axis A). In these cases, in particular, the storage element 1 comprises a sensor (encoder - of a known type and not shown) to detect the speed difference between the conveyors 6 and 7 (more precisely, the speed difference between the motorized pulley 24 and the motorized pulley 25), and a control unit to operate the moving assembly 12 according to this difference.

[0160] Advantageously, although not necessarily, the aforementioned actuator assembly (for moving the coupling means 9' and the coupling means 10' - pulleys 13 and 14 towards and away from each other) comprises a kinematic mechanism (e.g. a gear system with a worm) connected to a motor of the moving assembly 12 to transmit movement (according to a specific ratio) to the coupling means 9' and the coupling means 10' - pulleys 13 and 14 (so as to move them towards and away from each other).

[0161] Advantageously, although not necessarily, the transfer conveyor assembly 8 is configured to vary the speed at which the length of the transfer section IS changes, said speed being based on the rotational speed of the moving assembly 12 generated about the axis of rotation (see, for example, WO2019073447A1 in this regard).

[0162] According to some embodiments, the moving assembly 12 includes a mechanical connection configured to move the transfer conveyor assembly 8 (more precisely, rotate the transfer conveyor assembly 8 around the axis A) based on the speed difference between the conveyors 6 and 7 (more precisely, between the motorized pulley 24 and the motorized pulley 25).

[0163] Typically, in use, the storage element 1 is placed between a first machine (e.g. a cigarette making machine) and a second machine (e.g. a packaging machine) in order to compensate for the different speeds at which the first machine feeds the articles 2 into the storage element 1 and the second machine uses the articles 2 from the storage element. More precisely, the storage element 1 comprises a control system (for receiving information about the speeds) connected to the first and second machines, the control system being configured to adjust the speed of the conveyor 6 so as to adapt it to the speed of the first machine (and to adjust the speed of the conveyor 7 so as to adapt it to the speed of the second machine).

[0164] Specific reference Fig.11 and 12 According to some non-limiting embodiments, the engaging device 9' comprises a central element 42 on which, in use, the articles 2 are transferred from the first conveyor 6 to the transfer conveyor assembly 8. The centering element 9" is arranged on the opposite side of the central element 42 (and is substantially integral with the central element 42).

[0165] Additionally or alternatively, the engaging device 10' comprises a central element 43 on which, in use, the articles 2 are transferred from the transfer conveyor assembly 8 to the second conveyor 7. The centering element 10" is arranged on the opposite side of the central element 43 (and is substantially integral with the second central element 42).

[0166] In this way, tests have shown that the relative position of the transfer conveyor assembly 8 (particularly the engagement means 9 ′ and 10 ′) with respect to the conveyors 6 and 7 is more stable and precise.

[0167] Advantageously, although not necessarily, the engagement device 9' comprises at least adjustment means for adjusting the position of the centering elements 9" relative to the conveyor 6, in particular relative to the guide 27. In particular, in this way it is possible to adjust the position of the centering elements 9" so that they are in contact with the guide 27.

[0168] In addition or alternatively, the coupling device 10' comprises at least an adjustment device for adjusting the position of the centering element 10" relative to the conveyor 7 (in particular relative to the guide 29). In particular, in this way, the position of the centering element 10" can be adjusted so that the centering element 10" is in contact with the guide 29.

[0169] According to a non-limiting embodiment, adjustment means are provided for each centering element 9 ″ and for each centering element 10 ″.

[0170] In some non-limiting cases, each adjustment device includes (is) an eccentric (the eccentric can be operated, for example, by means of a screwdriver or the like).

[0171] Advantageously, although not necessarily, the central element 42 has at least a distal portion 44 relative to the transfer conveyor assembly 8 (ie, is arranged distally relative to the transfer conveyor assembly 8 ) which tapers toward the conveyor 6 .

[0172] Optionally, additionally or alternatively, the central element 43 has at least a distal portion 45 relative to the transfer conveyor assembly 8 (ie is arranged distally relative to the transfer conveyor assembly 8 ), which tapers towards the second conveyor 7 .

[0173] This makes it easier to transfer the articles 2 to and from the transfer conveyor assembly 8, thereby reducing the risk of jams at the same time.

[0174] According to some non-limiting embodiments, the central element 42 acts as a slide.

[0175] Advantageously, although not necessarily, the transport element 25 , in particular a belt and / or a chain, is configured to slide along at least the section S1 and has at least a recess 46 , in particular at least two recesses 46 , extending longitudinally along the transport element 25 .

[0176] Additionally or alternatively, the transport element 26 is configured to slide along at least the section S2 and has at least a recess 47 , in particular at least two recesses 47 , extending longitudinally along the transport element 26 .

[0177] In particular, the first central element 42 has at least teeth 48 (more particularly at least two teeth) which protrude on opposite sides relative to the transfer conveyor assembly 8 (particularly from the distal portion 44 ) and in particular extend at least partially within the recess 46 .

[0178] Additionally or alternatively, the central element 43 has at least two teeth 49 which project on opposite sides relative to the transfer conveyor assembly 8 (in particular, from the distal portion 45 ) and in particular (each) extend at least partially within the (corresponding) recess 46 .

[0179] It has been observed experimentally that in this way, the objects 2 are more easily transferred to and from the transfer conveyor assembly 8 and the risk of jamming is reduced.

[0180] Advantageously, although not necessarily, each tooth 48 and each tooth 49 tapers towards its free end (in particular, away from the transfer conveyor assembly 8 ).

[0181] Advantageously, although not necessarily, the engagement device 9' comprises at least a lower roller 50 (in particular a bearing) which is arranged in contact with the conveyor 6 (in particular, in contact with the transmission element 25; in particular, arranged between the central element 42 and the conveyor 6) and is configured to help the first engagement device 9' to slide on the first conveyor 6. In particular, the lower roller 50 has an axis of rotation transverse to the section S1.

[0182] Tests have shown that in this way the sliding of the engagement means 9 ′ and 10 ′ is better and the risk of jamming is reduced.

[0183] Additionally or alternatively, the engagement device 10' comprises at least a lower roller 51 (in particular a bearing) which is arranged in contact with the conveyor 7 (in particular, in contact with the transmission element 26; in particular, arranged between the central element 43 and the conveyor 7) and is configured to help the second engagement device 10' to slide on the second conveyor 7. In particular, the lower roller 51 has a rotation axis transverse to the section S2.

[0184] According to some non-limiting embodiments, the joining device 9' comprises at least two lower rollers 50, which are offset relative to each other (and / or staggered, in particular with respect to the position along the section S1). In addition or alternatively, the joining device 10' comprises at least two lower rollers 51, which are offset relative to each other (and / or staggered, in particular with respect to the position along the section S2).

[0185] Tests have shown that in this way the sliding of the engagement means 9' and 10' is surprisingly smoother (with less vibrations) and the risk of jamming is reduced. This behavior is particularly evident when the transmission elements 25 and 26 have irregular surfaces (for example, they are chains).

[0186] Presumably, this result is due to the fact that, with this configuration, the lower rollers 50 (and / or 51 ) are not simultaneously located in the recesses (discontinuities) of the transport element 25 (and / or 26 ).

[0187] Advantageously, although not necessarily, the engaging device 9' comprises at least adjustment means for adjusting the position of the lower roller 50 relative to the conveyor 6, in particular relative to the transmission element 25. Additionally or alternatively, the engaging device 10' comprises at least adjustment means for adjusting the position of the lower roller 51 relative to the conveyor 7, in particular relative to the transmission element 26.

[0188] In particular, in this way it is possible to adjust the position of the lower roller(s) 50 so that the lower roller 50 / the lower rollers 50 are in correct contact with the transport element 25, and / or to adjust the position of the lower roller(s) 51 so that the lower roller 51 / the lower rollers 51 are in correct contact with the transport element 26.

[0189] According to a non-limiting embodiment, adjustment means are provided for each lower roller 50 and each lower roller 51 .

[0190] In some non-limiting cases, each adjustment device includes (is) an eccentric (the eccentric can be operated, for example, by means of a screwdriver or the like).

[0191] Advantageously, although not necessarily, the conveyor assembly 3 comprises a hinge 52 arranged between the engagement device 9' and the transfer conveyor assembly 8 and configured to allow the engagement device 9' to pivot relative to the transfer conveyor assembly 8 about a respective pivot axis (in particular, transverse to the section S1).

[0192] Additionally or alternatively, the conveyor assembly 3 comprises a hinge 53 which is arranged between the engagement device 10' and the transfer conveyor assembly 8 and is configured to allow the engagement device 10' to pivot relative to the transfer conveyor assembly 8 about a corresponding pivot axis (in particular, transverse to the section S1).

[0193] Also in this case, surprisingly, a smoother movement of the objects 2 and a reduction in the risk of jamming were observed.

[0194] The storage element 1 according to the invention offers several advantages over the prior art. Among other things, it should be noted that in this way it is possible to have a relatively uncomplicated structure, which allows relatively simple maintenance operations. Furthermore, the storage element 1 is particularly flexible, since it is also possible to have an output station at the top (a particularly convenient location for the layout of the current machine) and to be very delicate in handling the items 2. The connection of the transfer conveyor assembly 8 to the conveyors 6 and 7 is stable and reliable. The risk of obstructions of the items 2 and / or of these obstructions being large and / or of the items 2 being damaged is also reduced.

[0195] Unless explicitly stated otherwise, the contents of the references (articles, texts, patent applications, etc.) described above are hereby fully cited for complete disclosure. In particular, the references described above are hereby incorporated by reference.

[0196] According to another aspect of the present invention, there is also provided the storage element 1 disclosed above.

[0197] According to a further aspect of the invention, there is provided a method for conveying articles 2, in particular substantially cylindrical articles (more particularly articles of the tobacco processing industry), from an input station 4 to an output station 5; the method comprising:

[0198] A transfer step, during which the transfer conveyor assembly 8 transfers the articles 2 from the first conveyor 6 from an input 9 (of the transfer section IS) to an output 10 along at least a transfer section IS of the path P. The transfer section IS has at least an intermediate section IS' of variable length, along which the transfer conveyor assembly 8 conveys the articles 2 in a given direction (in particular, at least partially upwards). The transfer conveyor assembly 8 comprises at least a transport element 11 (in particular, a belt and / or a chain), which (during the transfer step) at least partially accompanies the articles 2 along at least a portion of the intermediate section IS' and has a front side (surface) 11' in contact with at least a portion of the articles 2 (during the transfer step), and a rear side (surface) substantially opposite to the front side (surface); and at least a wall W, which is arranged behind the transport element 11 (i.e., on a side opposite to the front side) and has at least an oblong element ES, which supports the transport element 11 from behind. The oblong element ES has a first end E which is connected in a substantially integral manner to the input 9 or the output 10 .

[0199] The method further comprises a moving step during which the moving assembly 12 moves the input 9 and / or the output 10 so as to change the length of the intermediate section IS' and the position of the first end E in a given direction D. The moving assembly 12 comprises a deflection device DD which, during the moving step, bends (deforms) the oblong element ES (transversely) so as to change the length (extension) of the oblong element ES in a given direction D.

[0200] In particular, the moving step is performed at least partially simultaneously with the transferring step (and in particular, at least partially simultaneously with the first conveying step).

[0201] In particular, the articles 2 have a rectangular shape. More particularly, the transfer conveyor assembly 8 conveys the articles 2 in bulk (ie, in contact with each other and in multiple layers - see, for example, Figure 1 and Fig.15 ), and the articles 2 are transported transversely (ie in a transverse direction, in particular perpendicularly to their longitudinal extension).

[0202] Advantageously, although not necessarily, during the moving step, the deflection means DD bend (deform) the oblong element ES (transversely) so that at least one end section of the oblong element ES opposite the end E does not extend in a given direction D.

[0203] According to some non-limiting embodiments, during the movement step, the deflection device DD moves the end section of the oblong element ES opposite said first end E, moving it away from and / or closer to the intermediate section IS′.

[0204] Advantageously, although not necessarily, the deflection device DD comprises (in particular is) a winder which, during the movement step, winds up the end sections of the rectangular element ES (when the length of the intermediate section IS' decreases) and unwinds the end sections of the rectangular element ES (when the length of the intermediate section IS' increases).

[0205] According to some non-limiting embodiments, the transfer conveyor assembly 8 comprises at least a further wall W' supporting the transmission element 11 from behind (i.e. on the side of its back) and having at least a further oblong element ES' having a further end E' connected in a substantially integral manner to said output 10. In these cases, the moving assembly 12 comprises a further deflection device DD' which (during said moving step) bends (deforms) the further oblong element ES' (transversely) so as to change the length (extension) of the oblong element ES' in a given direction D (in particular, so that the end section of the oblong element ES' opposite to the further end E' does not extend in the given direction D; in particular, so that said end section of the oblong element ES' moves away from and / or closer to the intermediate section IS'). In these cases, the first end E is connected in a substantially integral manner to the input 9; the rectangular element ES and the further oblong element ES' are arranged continuously along the intermediate section IS'.

[0206] In particular, the further deflection device DD' comprises (in particular, is) a further winder, which (during the movement step) winds up the end segment of the further rectangular element ES' (when the length of the intermediate segment IS' decreases) and which unwinds the end segment of the further rectangular element ES' (when the length of the intermediate segment IS' increases).

[0207] According to some non-limiting embodiments, the method further comprises: a first conveying step during which at least the transport element 25 of the conveyor 6 conveys the objects 2 coming from the input station 4 along a first section S1 of the path P;

[0208] A second conveying step, during which the conveyor 7 conveys the articles 2 to the output station 5 along a second section S2 of the path P, the second section S2 being arranged downstream of the first section S1. During the transfer step, the transfer conveyor assembly 8 conveys the articles 2 from the conveyor 6 to the conveyor 7 along a transfer section IS of the path P and has an input section 9 arranged in the region of the first section S1 and an output section 10 arranged in the region of the second section S2, so as to feed the articles 2 to the second conveyor 7.

[0209] According to some embodiments, during the moving step, the moving assembly 12 moves the transfer conveyor assembly 8 so as to move the input portion 9 and the output portion 10 along the conveyor 6 and the conveyor 7, respectively.

[0210] In particular, the conveyor assembly 3 includes a coupling device 9', which allows the article 2 to move from the first conveyor 6 to the transfer conveyor assembly 8 and be movable on the first conveyor 6; and a coupling device 10', which allows the article 2 to move from the transfer conveyor assembly 8 to the second conveyor 7 and be movable on the conveyor 7.

[0211] The conveyor assembly 3 conveys the articles 2 from the input station 4 to the output station 5 along a path P of variable length. The end E moves in a substantially integral manner to the engagement device 9'. In particular, the further end E' moves in a substantially integral manner to the second engagement device 10'.

[0212] Advantageously, although not necessarily, the method is implemented by a conveyor assembly 3 as described above.

[0213] Reference numerals

[0214] 1 Storage unit

[0215] 2 Items

[0216] 3 Conveyor components

[0217] 4 Input Station

[0218] 5 Output Station

[0219] 6 Conveyor

[0220] 7 Conveyor

[0221] 8 Transfer conveyor components

[0222] 9 Input section

[0223] 10 Output section

[0224] 11 Transmission elements

[0225] 12 Mobile Components

[0226] 13 Pulley

[0227] 14 Pulley

[0228] 15 Pulley

[0229] 16 Propulsion

[0230] 17 Plate

[0231] 18 Slots

[0232] 19 Plate support

[0233] 20 Slots

[0234] 21 Deflection belt

[0235] 22 Deflection belt

[0236] 23 Motorized pulley

[0237] 24 Motorized pulley

[0238] 25 Transmission elements

[0239] 26 Transmission elements

[0240] 27 Guide

[0241] 28 recess

[0242] 29 Guide

[0243] 30 Support structure

[0244] 31 base

[0245] 32 columns

[0246] 33 Support components

[0247] 34 Support components

[0248] 35 Bearings

[0249] 36 Fixed part

[0250] 37 Removable parts

[0251] 38 Arm

[0252] 42 Center Component

[0253] 43 Center Component

[0254] 44 Distal part

[0255] 45 Distal part

[0256] 46 Depression

[0257] 47 Depression

[0258] 48 teeth

[0259] 49 teeth

[0260] 50 lower roller

[0261] 51 lower roller

[0262] 52 Hinge

[0263] 53 Hinge

[0264] 9' joint device

[0265] 10' joint device

[0266] 16' pulley

[0267] 9” centering element

[0268] 10" centering element

[0269] A axis

[0270] P-Path

[0271] S1 segment

[0272] S2 segment

[0273] IS transfer segment

[0274] SC1 connection part

[0275] SC2 connection part

[0276] D given direction

[0277] W-arm

[0278] ES rectangular element

[0279] DD Deflection Device

[0280] IS' Middle Section

[0281] R Guide

[0282] E end

[0283] WR Winding Roller

[0284] W' Arm

[0285] ES' rectangular element

[0286] DD' deflection device

[0287] E' end

[0288] WR' Winding Roller

[0289] c box

Claims

1. A conveyor assembly (3) for conveying substantially cylindrical articles (2), in particular articles of the tobacco processing industry; the conveyor assembly (3) being configured to convey the articles (2) from an input station (4) to an output station (5) along a path (P) having a variable length; The conveyor assembly (3) includes at least a transfer conveyor assembly (8) configured to convey articles (2) from an input portion (9) to an output portion (10) along at least a transfer section (IS) of a path (P); The transfer section (IS) has at least an intermediate section (IS') which has a variable length and extends at least partially upwards; The transfer conveyor assembly (8) is configured to convey articles (2) along the intermediate section (IS') in a given direction (D); The transfer conveyor assembly (8) comprises at least a transport element (11), in particular a belt and / or a chain, which is configured to at least partially accompany the articles (2) along at least a portion of the intermediate section (IS') and has a front side configured to come into contact with at least a portion of the articles (2) and a back side substantially opposite the front side; The transfer conveyor assembly (8) comprises at least a wall (W) which is arranged behind the transport element (11) and has at least an oblong element (ES) which extends along at least a portion of the intermediate section (IS') in order to support the transport element (11) from behind; The rectangular element has a first end (E) connected in a substantially integral manner to the input portion (9) or the output portion (10); The conveyor assembly (3) further comprises a moving assembly (12) configured to move the input portion (9) and / or the output portion (10) so as to change the length of the intermediate section (IS') and to move the first end portion (E) in the given direction (D); The moving assembly (12) comprises a deflection device (DD) which is configured to bend the rectangular element (ES) so that at least an end section of the rectangular element (ES) opposite to the end (E) does not extend in a given direction (D) so as to change the length of the rectangular element (ES) in the given direction (D).

2. A conveyor assembly (3) according to claim 1, wherein the deflection device (DD) includes (in particular, is) a winder, which is configured to wind and unwind the end sections of the rectangular element (ES); in particular, the transfer conveyor assembly (8) is configured to convey the items (2) at least partially upward along the middle section (IS').

3. The conveyor assembly (3) according to claim 1 or 2, wherein the transfer conveyor assembly (8) comprises at least a further wall (W'), which is arranged behind the transport element (11) and has at least a further rectangular element (ES'), which is configured to support the transport element (11) from behind and has a further end (E') connected to the output part (10) in a substantially integral manner; The moving assembly (12) comprises a further deflection device (DD') which is configured to bend the further oblong element (ES') so that an end section of the oblong element (ES') does not extend in a given direction (D); The first end portion (E) is connected to the input portion (9) in a substantially integral manner; The oblong element (ES) and the further oblong element (ES′) are arranged one behind the other along the intermediate section (IS′).

4. A conveyor assembly (3) according to claim 3, wherein the additional deflection device (DD') includes (in particular, is) an additional winder, which is configured to wind the end section of the additional rectangular element (ES') and to unfold the end section of the additional rectangular element (ES').

5. Conveyor assembly (3) according to any one of the preceding claims, wherein the oblong element (ES) is a rectangular plate or a rolling curtain.

6. Conveyor assembly (3) according to any one of the preceding claims, wherein: The rectangular element (ES) is a rectangular plate.

7. The conveyor assembly (3) according to any one of the preceding claims, wherein: The oblong element (ES) is a metal strip, in particular, a metal strip made of steel, more in particular, stainless steel; in particular, the further oblong element (ES') is also a metal strip, in particular, made of steel, more in particular, stainless steel.

8. The conveyor assembly (3) according to any one of the preceding claims, wherein: The rectangular element (ES) is (particularly, the further rectangular element (ES') is also) a rectangular plate (particularly a metal strip) having a thickness ranging from about 0.1 mm (particularly from about 0.2 mm; more particularly from about 0.25 mm) to about 0.5 mm (particularly to about 0.4 mm; more particularly to about 0.35 mm); in particular, the rectangular element (ES) is (particularly, the further rectangular element (ES') is also) made of steel (more particularly, stainless steel).

9. The conveyor assembly (3) according to any one of the preceding claims, wherein: The rectangular element (ES) (in particular, the further rectangular element (ES′)) has an elastic modulus (Young's modulus) of at least about 170 GPa; in particular, the rectangular element (ES) is (in particular, the further rectangular element (ES′) is also) made of C72UNI 10270-1 and / or 52SiCrNi5UNI 10270-2 spring steel and / or ASTM-A36 steel and / or AISI301 steel and / or the like.

10. A conveyor assembly (3) according to any one of the preceding claims, wherein the transfer conveyor assembly (8) comprises two guides (R), which extend in a given direction (D) along at least part of the middle section (IS') and are configured to each accommodate a side edge of a rectangular element (ES) (in particular the side edge of the further rectangular element (ES')) and allow the side edge of the rectangular element (ES) (in particular the side edge of the further rectangular element (ES') to slide in the guide.

11. The conveyor assembly (3) according to any one of the preceding claims, wherein: The conveyor assembly (3) comprises a first conveyor (6) configured to feed articles (2) from an input station (4) along a first section (S1) of a path (P); at least a second conveyor (7) configured to feed articles (2) to an output station (5) along a second section (S2) of the path (P); The transfer conveyor assembly (8) is configured to transfer articles (2) from a first conveyor (6) to a second conveyor (7) along the transfer section (IS) of the path (P), and comprises an input section (9) arranged in the region of the first section (S1) for receiving articles (2) from the first conveyor (6), and an output section (10) arranged in the region of the second section (S2) for feeding articles (2) to the second conveyor (7); the first section (S1) extends from the input station (4) to the input section (9); the second section (S2) extends from the output section (10) to the output station (5); The moving assembly (12) is configured to move the transfer conveyor assembly (8) so as to move the input portion (9) and the output portion (10) along the first conveyor (6) and the second conveyor (7), respectively.

12. The conveyor assembly (3) according to claim 11, wherein the first conveyor (6) and the second conveyor (7) are arranged so that one is at least partially located above the other, in particular the second conveyor (7) is at least partially arranged above the first conveyor (6); the first conveyor (6) has at least a turn; the second conveyor (7) has at least a turn; the turning direction of the first conveyor (6) is opposite to the turning direction of the second conveyor (7).

13. A conveyor assembly (3) according to claim 11 or 12, wherein the first conveyor (6) and the second conveyor (7) have turns that are substantially coaxial with each other; in particular, the first conveyor (6) has a plurality of first turns; and the second conveyor (7) has a plurality of second turns, and the plurality of second turns have the same radius and the same distance as the first turns.

14. The conveyor assembly (3) according to any one of claims 11 to 13, wherein: The conveyor assembly (3) includes a first engagement device (9') configured to allow the article (2) to move from the first conveyor (6) to the transfer conveyor assembly (8) and is movable on the first conveyor (6); and a second engagement device (10') configured to allow the article (2) to move from the transfer conveyor assembly (8) to the second conveyor (7) and to be movable on the second conveyor (7); The first end (E) is connected in a substantially integral manner to the first engagement means (9'); in particular, the further end (E') is connected in a substantially integral manner to the second engagement means (10').

15. A method for conveying objects (2), in particular substantially cylindrical objects of the tobacco processing industry, from an input station (4) to an output station (5) along a path (P) of variable length; The method comprises: a transfer step during which the transfer conveyor assembly (8) transfers the articles (2) from the input portion (9) to the output portion (10) along a transfer section (IS) of the path (P); The transfer section (IS) has at least an intermediate section (IS') of variable length, along which the transfer conveyor assembly (8) conveys the articles (2) in a given direction (D); The transfer conveyor assembly (8) comprises at least a transport element (11), in particular a belt and / or a chain, which at least partially accompanies the articles (2) along at least a portion of the intermediate section (IS′) and has a front side and a back side, the front side being in contact with at least a portion of the articles (2), the back side being substantially opposite to the front side, and at least a wall (W), which is arranged behind the transport element (11) and has at least a rectangular element (ES), which supports the transport element (11) from behind; The rectangular element (ES) has a first end (E) connected in a substantially integral manner to the input portion (9) or the output portion (10); The method further comprises a moving step, during which a moving assembly (12) moves the input portion (9) and / or the output portion (10) so as to change the length of the intermediate section (IS') and the position of the first end portion (E) in the given direction (D); The moving assembly (12) comprises deflection means (DD) which, during said moving step, bend said oblong element (ES) so as to vary the length of the oblong element (ES) in a given direction (D).

16. A method according to claim 15, wherein during the moving step, the deflection device (DD) bends the rectangular element (ES) so that at least the end section of the rectangular element (ES) opposite to the end (E) does not extend in a given direction (D); the moving step is carried out at least partially simultaneously with the transfer step (and, in particular, at least partially simultaneously with the first conveying step).

17. Method according to claim 15 or 16, wherein the deflection device (DD) comprises (in particular is) a winder, which during the moving step winds up the end section of the rectangular element (ES) and unwinds the end section of the rectangular element (ES).

18. Method according to any one of claims 15 to 17, wherein the transfer conveyor assembly (8) comprises at least a further wall (W') which is arranged behind the transport element (11) and has at least a further oblong element (ES') having a further end (E') which is connected to the output (10) in a substantially integral manner; The moving assembly (12) comprises a further deflection device (DD') which bends the further rectangular element (ES') so that an end section of the further rectangular element (ES') opposite the further end (E') does not extend in a given direction (D); The first end portion (E) is connected to the input portion (9) in a substantially integral manner; The oblong element (ES) and the further oblong element (ES') are arranged one behind the other along the intermediate section (IS'); In particular, the further deflecting device (DD') comprises (in particular is) a further winder which winds up the end section of the further oblong element (ES') and unwinds the end section of the further oblong element (ES').

19. The method according to claim 18, comprising: a first conveying step, during which at least one further transport element (25) of the first conveyor (6) feeds the articles (2) from the input station (4) along a first section (S1) of the path (P); a second conveying step, during which a second conveyor (7) feeds the articles (2) to an output station (5) along a second section (S2) of the path (P) arranged downstream of the first section (S1); During the transfer step, the transfer conveyor assembly (8) transfers the articles (2) from the first conveyor (6) to the second conveyor (7) along a transfer section (IS) of the path (P) and has said input section (9) arranged in the region of the first section (S1) and an output section (10) arranged in the region of the second section (S2) for feeding the articles (2) to the second conveyor (7); During the moving step, the moving assembly (12) moves the transfer conveyor assembly (8) so as to move the input portion (9) and the output portion (10) along the first conveyor (6) and the second conveyor (7), respectively; The conveyor assembly (3) comprises a first engagement device (9'), the first engagement device allowing the article (2) to move from the first conveyor (6) to the transfer conveyor assembly (8), and the first engagement device is movable on the first conveyor (6); and a second engagement device (10'), the second engagement device allowing the article (2) to move from the transfer conveyor assembly (8) to the second conveyor (7), and the second engagement device is movable on the second conveyor (7); A conveyor assembly (3) conveys articles (2) from an input station (4) to an output station (5) along a path (P) having a variable length; The first end (E) moves substantially integrally to the first engagement device (9'); in particular, the further end (E') moves substantially integrally to the second engagement device (10').

20. The method according to any one of claims 15 to 19, wherein: During the transfer step, the transfer conveyor assembly (8) at least partially conveys the articles (2) upwardly along the intermediate section (IS').

21. The method according to any one of claims 15 to 20, which is carried out by means of a conveyor assembly (3) according to any one of claims 1 to 14.

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