WO2015132033A1

WO2015132033A1 - Belt intruder device

Info

Publication number: WO2015132033A1
Application number: PCT/EP2015/052393
Authority: WO
Inventors: Daniele Piani
Original assignee: Toppy S.R.L.
Priority date: 2014-03-04
Filing date: 2015-02-05
Publication date: 2015-09-11

Abstract

An intruder belt device for inserting itself below a load (C), consisting of a set of parcel or a package or the like or for inserting itself between said load (C) and a support (S) for the load (C) consisting of a pallet, a floor, a loading bed, support, other parcels or packages or the like. Said device (1) has a front end assigned to be inserted below and/or to be unthreaded from the lower face of the load (C). Said device (1) comprises at least an upper belt conveyor (3) and at least a lower belt conveyor (4) mutually facing and parallel. In an operative condition of the device (1) said belt conveyors (3, 4) are almost horizontal. Said at least one upper belt conveyor (3) has an upper face (5) assigned to abut with a base face of the load (C). Said at least lower belt conveyor (4) has a lower face (6) assigned to abut with the support (S). Said device (1) comprises at least a first winding roller (37) and at least a second winding roller (38); said device (1) further comprises an upper operating belt (40) of the upper belt conveyor (3) and a lower operating belt (41) of the lower belt conveyor (4). The ends of the portions of said operating belts (40, 41) which consist of said upper (5) and lower (6) faces of the belt conveyors respectively upper (3) and lower (4), are fixed to said first winding roller (37) and the opposite ends of the operating belts (40, 41) are fixed to said second winding roller (38). Said first winding (37) and second (38) rollers are actuated for winding and unwinding the portions of the respective ends of the operating belts (40, 41), and then to move the faces of the upper (5) and the lower (6) faces in the same direction and way at least during the abutment with, and the motion in respect to, at least one between the load (C) and the support (S).

Description

BELT INTRUDER DEVICE

TECHNICAL FIELD The present invention relates to the field concerning the packaging and refers to a belt intruder device assigned to be inserted and/or unthreaded between a load, for example consisting of a set of packages, and a support or connection of such load consisting, for example, in a pallet, floor, loading bed or wrapping in film. BACKGRQUD ART

There are known foil, plate or thin rods devices used, for example, to insert or unthread between a pallet and its load. A drawback of the known devices, for example of foil or plates kind, consists in that they generate a lot of friction and that this friction increases proportionally to the weight of the load and the depth of insertion of said devices between pallet and load with all the wear, jam and power consumption problems that result with them. Further drawback consists in that these known devices, also because of the intense friction, require very intense forces for the insertion between the pallet and the load causing damaging risks of the package and. or risks of shifting or falling of the load.

Another drawback of the known devices, such as of rod kind, consists in that require grooves made on the supporting plane and in that such pallet grooves must be placed and dimensioned in a precise and complementary way in respect to the rods.

Further drawback of the known devices consists in that for their insertion and unthreading in the discont inuity between pallets and the load considerable counteracting forces must be applied to the load and, or to the pallet to contrast the force transmitted from the foil, plates and rods to the palletized packaging; for example trying to insert a f il between a pallet and a load, it is possible that the force required to the insertion is greater than the static friction force of the pal let on the floor and it is therefore necessary to apply to the pallet a counteracting force against the insertion force to avoid that the palletized packaging slides on the floor; this done it is possible that the foil slides on the pallet but that moves the load forcing to apply a counteracting force also to such load; this causes an complexity and cost increase of such known devices. Other most obvious example is that consisting of the unthreading of a foil below a load without pallet and the releasing of said load on the floor; in this case the counteracting force to be applied to the load to obtain the unthreading is certainly necessary because in absence of said counteracting force the load remains above the foil without any possibility of unthreading.

The prior documents N. GB 1 1079X3, JP2010189180, UST998009, US4453874, EP0462518, EP0321680, JPS49 3335 1 disclose devices hav ing the feature combinat ion of the preambl e of claim 1.

The known belts intruder devices utilize ring belts looped around shafts or rollers. Said ring belts, in particular multiple spaced ring belts, are very difficult to be replaced in case of fault because a large disassembly of the device is requested for replacement. Furthermore the broken ring belts must be replaced with substitutive ring belts having exactly the same features: circular length, thickness, width, stretching and so on. So a breaking of a ring belt can cause the stop of the dev ice for a long t ime, sometimes for days. Furthermore each minor modification of the intruder device requests the design and production of new ring belt, most of the customized ring belt are made by jointing the ends of a properly cut belt, so the resulting ring belt is weak because of joint.

SUMMARY OF THE INVENTION

One object of the present invent ion is to propose a belt intruder dev ice able, almost ithout friction, to insert into and, or to unthread from the discont inuity between a load, for example consisting of a packaging or of a set of overlapped packages, and the respective support, for example consisting of a pallet, of a floor or loading bed, or other packages or packaging, where said dev ice is able to withstand the stresses and that it is easy and fast to be repaired in case of damage or breakage of a belt, even without the disassembly of the device needing.

Further object is to propose a device prov ided w ith a plurality o f pairs of belts able to w ork, without need of stop and of repair, even in case of breakage of a belt or of a limited number of belts.

Other object is to propose a dev ice that can use both open or closed ring belts having lengths varying in a wide range of sizes and without particular precision requirements.

Another object is to propose a dev ice insensitive to the belts elongat ion.

Further object is to propose a dev ice that does not require groov es or particular characterist ics o f the support plane for the load under w hich the insertion or the unthreading must be performed.

Another object is to propose a device which affects the load and the support or w indings to a minimum shearing stresses almost independently from the weight and from the depth of insertion. Further object is to propose a dev ice that does not require the appl icat ion of counteracting forces to the load, pallet or windings.

Another object is to propose an e tremely versat ile device that can be also carried out in the form of forks for lifter, of load - respect ive pallet separator, of a pal let applicator under a load, of load and. or palletized packaging wrapping with vertical coils o f packaging film, etc.

BRIEF DESCRIPTION OF DRAWINGS The characterist ics of the invent ion are highlighted in the following w ith part icular reference to the accompanying drawings, in which: figures 1-9 show schematic views of the architecture of the belts intruder device of the present invention, and of some of its details:

figures 10 and 1 1 show respectively side and axonometric views of a first variant of the device abutting with a pallet whose support face for a load is provided with grooves;

figures 12 and 13 show partial and side views of a pair of belt conveyors of the belts intruder device object of the present invention, in respective extreme condit ions of belts winding;

figures 14 and 15 show axonometric and longitudinal section views of the pairs of belt conveyors, respectively of figures 12 and 13;

figure 16 shows a side view of the dev ice provided with the pair of conveyors o f figure 1 in about to separate a load partially illustrated;

figure 17 shows an axonometric and reduced view of figure 16;

figures 18 and 19 show side, partial and enlarged views of a second variant of the device of figures 12 and 13;

figures 20-24 show enlarged views of a third variant of the detail of figures 5 and 6 of the device;

figures 25-28 show respectively axonometric, top, front and side views of a fourth variant of the device of figure 1 and in the same abutment condition;

figure 29 shows an enlarged view of a detail of figure 28;

figure 30 shows an axonometric view of the device of figure 26 in a lateral grabbing condit ion of a side portion and lower portion of the load;

figure 3 1 shows an axonometric view of the device of figure 26 in a lateral grabbing condit ion and in a slight l ift ing condit ion of the side and lower portion of the load;

figure 32 shows an enlarged and part ial side view of a detail of figure 3 1 comprising the loading portion slightly lifted;

figure 33 shows a partial enlarged side view of a detail of figure 31 comprising the portion of the load slightly lifted and under which the front part of the lower portion of the device is inserted therein;

figures 34-36 show two axonometric views and one side view of a fifth variant of the device equipped to carry out the wrapping of the load and of the palletized packaging wit h coil s of packaging film, in a condition preceding the winding;

- figures 37-39 show axono metric views of figure 35 in a series of winding conditions of the load;

- figures 40 and 41 show respectively side and enlarged partial view of figure 39 in an approaching condition of the load to the pallet;

- figures 42-47 show axonometric views of figure 39 in a series of winding condit ions of the palletized packaging.

BEST MODE OF CARRYING OUT THE INVENTION

With reference to figures 1-9, and 12-17, numeral 1 indicates the belts intruder device, object of the present invention.

The device 1 is assigned to insert under the base face of a load C, and to unthreaded from such load, which, typically, consists of a set of stacked parcel or of a packaging or the like, where said load C is supported on a support S for such load C, such support S consisting of a pallet, of a floor, of a loading bed for example of a vehicle, of a support, for example, consisting of shelving plane or similar support elements or of other parcels or packaging.

In other words, the front end of said device is assigned to be inserted and/or unthreaded from beneath the lower face of the load C inserting into the discontinuity between the load and the pallet or other loading support or exiting from such discontinuity to be unthreaded from beneath the load C and depositing it on a pallet or on one of the other possible supports. Moreover, as will be better illustrated in the description of the fifth variant, the device 1 can deposit a load C with which it has been itself 1 wrapped in vertical coils of packaging film, on a support S without damaging or moving the coils wrapping. Said device 1, in an operating condition, comprises an upper belt conveyor 3 superimposed to a lower belt conveyor 4. The upper belt conveyor 3 and the below lower belt conveyor 4 are mutually facing parallel and in an operative condition of the device 1 they are almost horizontal.

The upper belt conveyor 3 is provided with an upper operating belt 40 having an upper face 5 assigned to abut with a base face of the load C.

The lower belt conveyor 4 is provided with a lower operating belt 41 having a lower face 6 assigned to abut with the support S.

The device 1 comprises at least a first winding roller 37 and at least a second winding roller 38.

The free ends of the portions of said operating belts 40, 41 which constitute said upper 5 and lower 6 faces of the respectively upper 3 and lower 4 belt conveyors, are fixed to said first winding roller 37 and the opposite ends of the operating belts 40, 41 are fixed to said second winding roller 38.

The operating belts 40, 41 are made of flexible material, for example elastomeric or synthetic rubber, reinforced with synthetic or minerals longitudinal fibers, such as steel, Nylon®, Dyneema®, carbon, aramid, and combinations thereof, or may be in chains, chain link or flexible plate.

The winding rollers 37, 38 can be in the form of cylindrical shaft, of drum or of reel and can be provided with respective external or internal driving motors, or preferably can be provided with clutches for the connection of the one 37 or the other 38 to a single driving motor, for example electric, pneumatic or hydraulic.

The first 37 and second 38 winding rollers, are operated to wind and unwind the portions of the respective ends of the operating belts 40, 41 and then to translate the faces of the upper 5 and lower 6 faces in the same direction and orientation for example during the abutment with the load C and/or the support S.

The ends of the operating belts 40, 41 fixed to the first 37 and/or second 38 winding rollers are seamlessly mutually joined, or are separated. In particular, the two operating belts 40, 41 can be two separate linear belts, can be joined in a seamlessly single body or by a junction, to one common end thereof forming an opened linear single belt or joined at both the ends forming a single ring belt.

The upper 3 and lower 4 operating belts are provided with respectively upper 9 and lower 10 sliding plate means between which slide, in mutual contact, the portions of the operating belts 40, 41 whose ends are fixed to the second winding roller. Such upper 9 and lower 10 sliding plate means are plate or slab shaped and they extend from an area near of the winding rollers 37, 38 up to the front ends of the upper 3 and lower 4 operating belt where each of said sliding plate means 9, 10 has a "C" or tubular folding shape 11, 12 or has a rounding or bears a respective small diameter idle front roller.

The upper 9 and lower 10 sliding plate means are mutually fixed, at a mutual distance equal to or slightly bigger than the sum of the thicknesses of the upper and lower operating belts; said upper 9 and lower 10 sliding plate are mutually fixed and spaced by means of spacers means placed at the sides of the operating belts 40, 41.

To exemplify the arrangement of the operating belts, reference is made to figure 12 in which the operating belts 40, 41 are wound around the second winding roller 38. Starting from the end of the lower operating belt 41 fixed to the first winding roller 37, such belt 41 slides along the lower face of the lower sliding plate means 10 reaching the front end; then it 41 slides on the upper face of said lower sliding plate means 10 where it abuts with the upper operating belt 40 with which it wraps around the second winding roller 38 until reaching its fixing point. Starting from the end of the upper operating belt 40 fixed to the second winding roller 38, the upper operating belt 40, remaining in abutment with the lower operating belt 41, reaches the upper sliding plate means 9 and slides along the lower face of this latter 9 until reaching the front end of it 9 where it has leaved the lower operating belt 41 and passes to flow along the upper face of such lower sliding plate means 9 to reach, with the opposite end, the first winding roller 37. To keep the upper operating belt 40 in contact with the upper face of the upper sliding plate means 9, the device is provided with a pressure roller 42 placed near the root of the upper face of the sliding plate means 9. Obviously a pressure roller 42 can be placed in correspondence of one or both of the sliding plate means depending on the path of the belts.

The synchronization of the rotation of the upper and lower operating belts is produced or facilitated by said mutual abutment between the lower face of the upper operating belt and the upper face of the lower operating belt between the two sliding plate means 9, 10.

The upper sliding plate means 9 near its front end optionally bears a bent portion which extends downwards and in the front part of the front end of the lower sliding plate means 10 to place the front end of the upper belt conveyor 3 in front of and approximately at the same height as the front end of the lower belt conveyor 4; this greatly reduces the vertical thickness of the front portion of the device facilitating the insertion into said discontinuity below to the load C. The sliding plate means 9, 10 can be, for example, made of metal, and can be provided with a low-friction coating or be of micro-perforated type and fed with compressed air to realize a lubricating layer of air between such sliding plates means 9, 10 and the respective belts. The device 1 can comprise a transverse insertion means 15, rigidly fixed to the device 1 in front to the upper 3 and lower 4 belt conveyors, and at least assigned to be inserted under the load. The optional insertion means 15 has an elongated shape with wedge- shaped cross section, triangular shape, or blade or vane shaped transverse and protruding in front of the upper 3 and lower 4 belt conveyors. The transverse insertion means 15 is assigned to facilitate the initial insertion of the device in said discontinuity.

Each operating belt 40, 41 can have a width, or transverse dimension, corresponding to the width of the respective belt conveyor 3, 4; vice versa is preferably provided that each operating belt 40, 41 consists of a plurality of bands or spaced parallel strips where to each band of the upper operating belt 40 corresponds a facing band of the lower operating belt 41 so that the bands of the two operating belts form pairs of upper and lower bands in mutual abutment.

In such preferred case, the spacers are placed in the free spaces of the sliding plate means, between a pair of bands and the other and to the side of the pairs of side bands. The operation of the device 1 provides that it is placed with the transversal vertex of the insertion means 15 in correspondence of the discontinuity between the load and its support and that such device is placed with the advancement motion toward the inside of the discontinuity. The rotation of the belts, induced or produced by one or more motors, avoids the grazing friction between the device and the support and/or the load. The operation of the device 1 further provides that it is also possible to deposit a load C, supported by it 1 , on a pallet or other support S .

By way of example, the device can be installed, either individually or in pairs, in place of the forks on a lifting motorized carriage and can then be used to insert between a pallet and the load, lifting only the latter and for depositing the load on the loading bed of a container or a of a vehicle without the pallet. Likewise, such association between the device and a lift allows to pick up a load, for example a stack of packages or one or more sacks of loose material, from a vehicle or container and to deposit the load on a pallet. In the first variant of the device of figures 10 and 11 the insertion means 15 is provided with a plurality of optional lower tooth means 16, wedge-shaped and assigned to be inserted and to slide in respective grooves of the support face for a load C of a support means S to facilitate the intrusion of the device between the grooved pallet and the respective load.

The second variant of figures 18 and 19 of the device 1 comprises at least a spacer roller 43 assigned to abut with the upper operating belt 40 or with the lower operating belt 41 to keep it spaced from the operating belts 40, 41 wrapped around said first 37 or second 38 winding roller. The spacer rollers 43 avoid any path length change of the respective operating belt. In the third variant of figures 20-24 the rear transverse edge of said insertion means 15 is rotatably fixed, by a transverse hinge means 17 or a transverse elastomeric joint to the front end of the upper belt conveyor 3 where the wording "the front end" means "the transverse portion of the belt of the upper belt conveyor 3 which is placed in front in the condition immediately prior to the insertion of the insertion means 15 under the load".

In the condition in which the device is discharged and predisposed to the insertion operations of the insertion means 15 in the discontinuity between load and pallet, the insertion means 15 is elastically maintained projecting forward, and almost horizontal, by elastic means, not shown, of the hinge means 17 or by the elastic capability of the elastomeric joint and during the device insertion in the discontinuity, it bends under load.

The fourth variant of figures 25-33 of the device 1 also includes a pair of jaw means 19, of elongated flat shape, mutually facing and arranged on respective vertical planes and in one of their rest condition are side placed in respect to the upper 3 and lower 4 operating belts.

These jaw means 19 are placed in upper, and perpendicular way and in front protruding with respect to the upper face 5 of the upper belt conveyor 3.

The jaw means 19 are associated with movement means, for example of two axis type with actuator of the pneumatic type, or of the electric or hydraulic type and not illustrated, which approach them to each other to tighten an interposed load C and that translate or rotate them in lifting to slightly lift at least one at least lower portion and facing to the front part of the belt conveyors 3, 4 of the load C tightened.

Each of the jaw means 19 comprises at least one ring belt engaged in idle or motorized rollers assigned to accompany or to facilitate the translation of the belt conveyors 3, 4 under the tightened load. The operation of the jaw means 19 allows to open wide the discontinuity between the load and the respective support, such as pallet, floor or loading bed, and to facilitate the insertion in the discontinuity of the upper 3 and lower 4 operating belts even without the insertion means 15.

The invention provides that the jaw means 19, and the elements connected to them, of the fourth variant of figures 25-33 can be associated with the upper 3 and lower 4 belt conveyors provided with first 37 and second 38 winding rollers or with any belt intruders, for example of upper and lower closed ring belt conveyors type where the rear ends, opposite to the front end of the device, of the upper 3 and lower 4 belt conveyors have respective rollers 7, 8, or groups of parallel rollers for ring belts. One or more of such rollers 7, 8 are motorized to help and/or to cause the rolling of the ring operating belt in abutment with the lower face of the load C and/or with the upper face of the support s.

The fifth variant of figures 34-47 of the device 1 further comprises a wrapping means 25 provided with a ring guide means 26, placed on a vertical plane, for the rotation along it 26 of a reel means 27 for a coil B of packaging film and comprises horizontal translation means of the belt conveyors 3, 4 through the ring guide means 26 to wrap with the film at least one load C placed on belt conveyors 3, 4 and the belt conveyors 3, 4 themselves.

At the end of the wrapping the belt conveyors 3, 4 are actuated to release the wrapped load C unthreading said belt conveyors between bottom of the load and film.

The device 1 of this variation can further comprise an feeding conveyor means 30, coplanar and parallel to the upper face 5 of the upper belt conveyor 3 placed backside to the rear end of the belt conveyors 3, 4.

The device also comprises a conveyor and lifter means 31 parallel and in front to the belt conveyors 3, 4 and provided with vertical translation means that translate it 31 between a lower condition, in which it is below the upper face 5 of the upper belt conveyor 3 having a height approximately equal to the vertical thickness of a support S and an aligned condition in which it 31 is coplanar with said upper face 5.

The operation of the fifth variant of the device provides that the load C is translated by the feeding conveyor means 30 and by the upper belt conveyor, above the latter 3, and that the wrapping means 25 wraps the load, and the belt conveyors 3, 4; the horizontal translation means translate the belt conveyors 3, 4 and the load so that the wrapping means 25 can make a wrapping of all longitudinal extension of the load. At the end of the wrapping, the horizontal translation means translate the belt conveyors 3, 4 onto the conveyor and lifter means 31 bearing a pallet and, without damage the wrapping, draw back from under the load and it deposits said wrapped load on a pallet. The conveyor and lifter means 31 then lift the pallet with the respective wrapped load at the height of the upper face of the belt conveyors 3, 4 which in the meantime are draw back to the starting position. The pallet with the load are transferred to the belt conveyors 3, 4 and the wrapping means 25 provides to the fixing of the pallet to the load by additional wrapping at the end of which the wrapped packaging is directed to the outlet.

Claims

1) Intruder belt device for at least one between a load (C) consisting of a set of parcel or a package or the like, and support (S) for the load (C) consisting of a pallet, a floor, a loading bed, support, other parcels or packages or the like; said device (1) has a front end assigned to be inserted below and/or to be unthreaded from the lower face of the load (C); said device (1 ) comprises at least an upper belt conveyor (3) and at least a lower belt conveyor (4) mutually facing and parallel and that in an operative condition of the device (1) they (3, 4) are almost horizontal; said at least one upper belt conveyor (3) has an upper face (5) assigned to abut with a base face of the load (C); said at least lower belt conveyor (4) has a lower face (6) assigned to abut with the support (S); said device (1) is characterized by comprising at least a first winding roller (37) and at least a second winding roller (38) and by comprising an upper operating belt (40) of the upper belt conveyor (3) and a lower operating belt (41) of the lower belt conveyor (4), the ends of the portions of said operating belts (40. 41 ) which consist of said upper (5) and lower (6) faces of the belt conveyors respectively upper (3) and lower (4), are fixed to said first winding roller (37) and the opposite ends of the operating belts (40, 41 ) are fixed to said second winding roller (38); said first winding (37) and second (38) rollers are actuated for winding and unwinding the portions of the respective ends of the operating belts

(40, 41 ), and then to move the faces of the upper (5 ) and the lower (6) faces in the same direction and way at least during the abutment with, and the motion in respect to, at least one between the load (C) and the support (S). 2) Device according to claim 1 characterized in that the ends of the operating belts (40, 4 1 ) fixed to the first (37) and. or second (38) winding rollers are mutually joined seamlessly or are separated.

3) Dev ice according to claim 1 or 2 characterized in that the upper (3) and lower (4) belt conveyors are prov ided with sliding plate means respectively upper sliding plate means (9) and lower sliding plate means (10) between which slide, in mutual connection, the portions o the operating belts (40, 41 ) whose ends are fixed to the second winding roller; the upper (9) and lower (10) sliding plate means are mutually fixed by spacers means placed at the sides of the operating belts (40, 41).

Device according to any one of the previous claims characterized in that the ends of the upper sliding plate means (9) and lower sliding plate means (10) have respective "C" folds or tubular or rounded folds (11, 12) or they have respective front rollers.

Device according to claim 6 characterized in that it comprises at least one pressure roller (42) assigned to maintain the upper operating belt (40) and/or the lower operating belt (41) in abutment respectively with the upper face of the upper sliding plate means (9) and. r with the lower face of the lower sliding plate means (10).

Device according to any of the previous claims characterized in that it comprises at least one spacer roller (43) assigned to abut with the upper operating belt (40) or with the lower operating belt (41 ) to keep it spaced from the operating belts (40, 41) wound around said first (37) or second (38) winding roller.

Device according to any of the previous claims characterized in that the upper sliding plate (9), near its front end, has an optional bended portion that extends itself downward and in front with respect to the front end of the lower belt conveyor (4) for placing the front end of the upper belt conveyor (3) in front and almost at the same height of the front end of the lower belt conveyor (4).

Dev ice according to any one of the prev ious claims characterized in that it comprises a front insertion means (15) assigned at least to insert itself below the load (C) and being transversal wedge, blade or vane shaped and, at least in an initial operative condition of insertion of the device below the load (C), said insertion means (15), protrudes in front to the upper (3) and to the lower (4) belt conveyors; said insertion means (15) is rigidly fixed to the device (1) and optionally provided with a plurality of lower tooth means (16) each one wedge shaped and assigned to enter and to slide into respective grooves of the support face for the load (C) of a support means (S), or the back transversal edge of said insertion means (15) is swivelling connected, by a transverse hinge means (17) or by an elastomeric joint transversal to the front end of the upper belt conveyor (3). 9) Device according to any one of the previous claims characterized in that it comprises a plurality of pairs of upper (40) and lower (41) operating belts where these pairs are mutually separated and associated to the same belts conveyor (3, 4) and/or to the same first (37) and second (38) winding rollers.

10) Dev ice according to any one of the previous claims characterized in that it comprises at least a pair of elongated side and mutually facing jaw means (19) placed upper and front protruding with respect to the upper face (5) of the upper belt conveyor (3) and associated with moving means that mutually approach them to clamp an interposed load (C), said moving means translate or rotate upward the jaw means (19) for at least slightly lifting at least a lower portion facing to the front portion of the operating belts (3, 4) of the clamped load (C) in which each of the jaw means (19) comprises at least a ring belt engaged in idle or motorized rollers assigned to accompany or to help the translation of the operating belts (3, 4) below the clamped load.

11) Device according to any of claims 1-10 characterized in that it comprises a wrapping means (25) provided with a ring guide means (26), placed on a vertical plane, for rotating along it (26) of a reel means (27) for a coil (B) of packaging film and it comprises horizontal translation means for the operating belts (3, 4) through the ring guide means (26) for wrapping with the film at least a load (C) placed onto the operating belts (3, 4) and the latter (3, 4) that at the end of the wrapping are actuated for releasing the wrapped load (C) unthreading between the bottom of the load and the wrapping film.

12) Device according to claim 11 characterized in comprising an inlet conveyor means (30) coplanar with and parallel to the upper face (5) of the upper belt conveyor (3) placed backward with respect to the back end of the belt conveyors (3, 4), and it comprises a lifting and conveyor means (31) parallel and front of the belt conveyors

(3, 4) and provided with vertical translation means that translate it (31) between a lower condition in which is below the upper face (5) of the upper belt conveyor (3) of a length approximately equal to the vertical thickness of a support means (S) and an aligned condition in which it (31) is coplanar with said upper face (5).