US20220340315A1 - Wrapping head for wrapping loads, particularly palletized loads, and method of operation thereof - Google Patents
Wrapping head for wrapping loads, particularly palletized loads, and method of operation thereof Download PDFInfo
- Publication number
- US20220340315A1 US20220340315A1 US17/640,696 US202017640696A US2022340315A1 US 20220340315 A1 US20220340315 A1 US 20220340315A1 US 202017640696 A US202017640696 A US 202017640696A US 2022340315 A1 US2022340315 A1 US 2022340315A1
- Authority
- US
- United States
- Prior art keywords
- film
- wrapping
- feed direction
- deflector
- wrapping head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 14
- 239000000463 material Substances 0.000 claims abstract description 46
- 239000010410 layer Substances 0.000 claims description 31
- 239000002356 single layer Substances 0.000 claims description 11
- 238000004804 winding Methods 0.000 description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B41/00—Supplying or feeding container-forming sheets or wrapping material
- B65B41/12—Feeding webs from rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
- B65B11/02—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
- B65B11/025—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders by webs revolving around stationary articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
- B65B11/04—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated
- B65B11/045—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated by rotating platforms supporting the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B41/00—Supplying or feeding container-forming sheets or wrapping material
- B65B41/18—Registering sheets, blanks, or webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
- B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
Definitions
- the present invention regards a head for wrapping loads, more particularly palletized loads, and the respective wrapping method.
- the palletized loads consist of one or more goods arranged on a pallet for the purpose of facilitating the movement and the transport thereof.
- the wrapping of a palletized load is generally carried out by means of automatic or semiautomatic wrapping stations, comprising means for moving a wrapping head, which carries one or more reels of such extensible material that can be unrolled and wound around the load.
- the palletized load is maintained stationary, while the wrapping head is rotated around the load.
- the palletized load is driven to rotate around a longitudinal axis thereof, while the wrapping head is situated in a fixed position at a predetermined distance from the rotatable load, and is translatable vertically and parallel to the load, so as to cover the entire lateral surface thereof.
- the extensible material of the reel can be unrolled from the wrapping head, coming to form a series of spiral windings around the palletized load, starting from a lower or upper end thereof, up to obtaining a stabilizing covering of the load.
- the extensible material employed is cut by means of suitable means mounted on the wrapping head, and the film flap thus obtained is fixed to the palletized load. e.g. welded by means of a suitable buffer.
- the wrapping stations briefly described above are susceptible of improvements, mainly with the purpose of increasing, during the transport or during other logistical operations, the stability and the strength of the wrapped load.
- the reel of plastic material film to be wound around the palletized load has a height comparable to that of the load to be palletized, a typical example is that of the reels of film with height of 1000 mm., and loads to be palletized that are 1200-1500 mm, high, the spiral winding of the film on the load achieves the relatively high height superimpositions of the layers of the film, for example also on the order of 300 mm.
- the film exerts an excessive pressure in the aforesaid central portion of the load, obtaining a so-called hourglass effect. i.e. with a narrower central part, with the consequent crushing-deformation of possible pliable goods situated in that zone.
- the strong vertical stresses sustained by the load during the transport can temporarily cancel the weight force of the goods of the palletized load, with the consequent reduction of the friction force between one layer of goods and the next, and possible accidental movements between the layers.
- the portion of the load most subject to goods slipping on the pallet is that in direct contact with the pallet, so that the pallet delimits an abutment surface of the goods that is nearly flat and with low friction level, while in the upper layers the goods, usually having non-perfectly regular shapes, tend to offer greater slipping resistance.
- the pallet in order to overcome the abovementioned drawbacks, and in order to make a suitable wrapping of the palletized load, it is provided to quite firmly wrap with the plastic material film at the base of the load, achieving multiple windings around the pallet and around the lower layer of the goods.
- the state of the art comprises several documents which illustrate machines and methods for wrapping loads.
- the document WO 2006/032065 A1 describes an apparatus for wrapping goods on a pallet, which comprises a base section for receiving a pallet and distribution means for dispensing a material in order to wrap the goods on a pallet, the distribution means including rotary means in order to allow the material to be twisted while it is applied to the goods on the pallet.
- the document US 2018/111709 describes an apparatus, associable with a wrapping machine, comprising at least one unwrapping unit for the wrapping machine for wrapping a load with a film and shuttle means movable along a path and adapted to receive and support an unwrapping unit to be substituted and to be disassembled from the wrapping machine and/or from a new unwrapping unit to be mounted on the wrapping machine.
- the document US 2011/088359 A1 presents a wrapping machine for wrapping a tape with at least two extensible films around a product, which comprises a dispenser for dispensing the two extensible films with longitudinal superimposition.
- the U.S. Pat. No. 5,077,956 A describes a method for wrapping a palletized load with a tape of plastic material film whose width is a fraction of the height of the load.
- the method is provided for a fixed table machine with a stationary load in which the reel of film is moved around the load and consequently unwound in order to form at least one revolution of the tape, after which the tape of film is transversely cut, the latter terminal part of the film tape is combined with the wrapped load and the new first terminal part of the film is fixed and the wrapped load is removed.
- the reel of film is moved in a path, forming a horizontal ring, and in this step the tap of unwound film is deflected and offset in vertical direction in order to prevent irregular folds in the film.
- the technical task of the present invention is that of improving the state of the art in the field of wrapping palletized loads.
- one object of the present invention is to make a wrapping head for wrapping loads which allows overcoming the previously lamented drawbacks.
- Another object of the present invention is to provide a wrapping head for wrapping loads capable of suitably stabilizing a palletized load with a more limited consumption of plastic material film with respect to the known solutions.
- Still another object is to devise a wrapping head for wrapping loads with versatile use, in order to satisfy different load wrapping requirements.
- Still another object of the present invention is to implement a wrapping head for wrapping loads that is structurally simple and inexpensive.
- a further object of the present invention is to provide a wrapping head for wrapping loads with simple and reliable operation.
- Such task and such objects are achieved by a wrapping head for wrapping loads, more particularly palletized loads, according to the present application.
- the wrapping head comprises a framework, connectable to the operating end of a handler, and supporting a reel of film made of extensible material.
- the head also comprises diverting means for transferring the film, unwound from the reel, towards the load.
- the head comprises means for cutting the film, along its feed direction, so as to obtain a first portion of film and a second portion of film that are distinct and separate from each other.
- the head comprises means for deflecting the first portion of film, suitable to superimpose the first portion on the second portion, thus attaining, at the outlet of said wrapping head, a double-layer material band.
- the deflection means for the first portion of film are adjustable so as to obtain a partial or complete superimposition of the two film portions.
- This solution allows at least partly obtaining a wrapping of the load that is more solid and thick, when desired, by using the normal film unwound from the reel, with which one obtains, due to the aforesaid expedients, a double-layer band, even without using a greater quantity of material.
- the aforesaid deflection means can be activated and deactivated in a selective manner at the user's discretion, i.e. they can be activated only when requested, during the operation of the head.
- the wrapping method according to the invention comprises the steps of supplying a reel of film made of extensible material, unwinding the film from the reel, cutting the film along its feed direction, so as to obtain a first portion of film and a second portion of film that are distinct and separate from each other, and deflecting the first portion of film, so as to superimpose such first portion of film on the second portion of film, thus attaining a double-layer material band, and wrapping the load with such band.
- the aforesaid step of deflecting the first portion of film comprises a step of deflecting such first portion from a first feed direction to an intermediate feed direction, which is deflected, with respect to such first feed direction, by a first deflection angle.
- the aforesaid step of deflecting the first portion of film comprises a step of further deflecting such first portion from the intermediate feed direction to a second feed direction, which is deflected, with respect to such intermediate feed direction, by a second deflection angle; in particular, the second feed direction coincides with the feed direction of the second portion of film.
- FIG. 1 is a perspective view of the wrapping head according to the present invention, in a specific operative step
- FIG. 2 is a further perspective view of the wrapping head, in which the film has been removed for greater clarity;
- FIG. 3 is a top view of the wrapping head
- FIG. 4 is another top view of the wrapping head, with some parts removed for greater clarity
- FIG. 5 is a detail of FIG. 2 ;
- FIG. 6 is a further perspective view of the wrapping head from a different angle, with some parts removed and with the handler, with which the head is associated, illustrated in a schematic manner with dashed line;
- FIG. 7 is a schematic front view of a wrapping station comprising the wrapping head according to the invention.
- FIG. 8 is a front, schematic and detailed view of the deflection means for the wrapping head, in an initial step in which the first portion of the film is not yet superimposed on the second portion of the film;
- FIG. 9 is a front, schematic and detailed view of the deflection means for the wrapping head, in a subsequent step in which the first portion of the film is superimposed on the second portion of the film, thus attaining a double-layer wrapping material;
- FIG. 10 is a schematic and detailed top view of the deflection means for the wrapping head.
- reference number 1 overall indicates a head for wrapping loads, more particularly palletized loads, according to the present invention.
- a head 1 included in a wrapping station 2 ( FIG. 7 ) in which the load 3 , in particular a palletized load, is driven to rotate around a vertical or substantially vertical axis, on a suitable rotatable support platform 4 , and the wrapping head 1 is fixed with respect to the load 3 , and only executes vertical or substantially vertical movements.
- the present invention can also be applied to a wrapping station 2 in which the load 3 is locally stationary, while the wrapping head 1 is supported, and driven, to rotate around the aforesaid stationary load 3 .
- the wrapping head 1 comprises a support framework 5 .
- the support framework 5 comprises a first plate 6 , lower during use, and a second plate 7 , upper during use, opposite the first plate 6 .
- the first plate 6 and the second plate 7 can be joined together by means of elongated connection elements 8 , of any type (see for example FIG. 6 ).
- the framework 5 of the head 1 is connectable to the operating end 9 of a handler 10 , e.g. a robot.
- the handler 10 can for example be a robot of anthropomorphic type, or a Cartesian robot, or a robot of another type.
- the robot 10 has the task of imparting, to the support framework 5 of the head 1 , the necessary movements in order to execute the correct wrapping of the palletized load 3 , according to a specific wrapping program, as is better clarified hereinbelow.
- connection between the operating end 9 of the robot 10 and the framework 5 is carried out by means of the brackets 11 fixed, for example, to the elongated connection elements 8 .
- brackets 11 can be provided, of which one is upper during use and the other lower during use; each bracket 11 can be provided with eyelets 12 , by means of which it is possible to obtain the connection to the operating end 9 .
- the framework 5 supports a reel 13 of a film 14 made of extensible material suitable for the wrapping of loads, in particular palletized loads, e.g. an extensible plastic material of type known in this application type.
- the wrapping head 1 can also comprise a pre-stretch group 15 of the film 14 unwound from the reel 13 , and intended for the wrapping of the load 3 .
- the pre-stretch group 15 is supported by the framework 5 .
- the pre-stretch group 15 comprises a first roller 16 and a second roller 17 , rotatably supported by the framework 5 , with the respective rotation axes parallel.
- the rotation axes of the rust roller 16 and of the second roller 17 are perpendicular to the planes where respectively the first plate 6 and the second plate 7 lie.
- first roller 16 and the second roller 17 have cylindrical or substantially cylindrical shape; nevertheless, in other embodiments, the first roller 16 and the second roller 17 could have a different shape.
- the lateral surfaces of the first roller 16 and of the second roller 17 are coated with material adapted to attain high friction with the film 14 ; for example, the lateral surfaces of the first roller 16 and of the second roller 17 can be coated with rubber, or another material with suitable properties.
- Such coating of the first roller 16 and of the second roller 17 could also be affected by surface machining, which has the purpose of further increasing the friction with the film 14 .
- the film 14 unwound from the reel 13 , is wound on the first roller 16 and then on the second roller 17 , in this order, before then continuing towards the palletized load 3 .
- the first roller 16 and the second roller 17 comprise respective first driving means 18 and second driving means 19 , controlled by a control unit for operating the wrapping head 1 , not represented in the figures.
- the control unit is configured for commanding the first driving means 18 and the second driving means 19 such that the rotation speed of the second roller 17 is greater than that of the first roller 16 .
- Such stretching of the material of the film 14 can be carried out for at least two reasons.
- the first reason is the reduction of the consumption of material used for wrapping the palletized loads 3 , due to the greater length of the film 14 given the same weight of employed material.
- the second reason is that the suitably stretched material adheres in an improved manner to the external surface of the palletized load 3 , causing a wrapping of improved quality.
- the presence of the pre-stretch group 15 in the wrapping head 1 according to the present invention is however entirely optional.
- the wrapping head 1 also comprises diverting means 20 for sending the film 14 , unwound from the reel 13 and suitably elongated by the pre-stretch group 15 , towards the load 3 .
- such diverting means 20 comprise a plurality of bars 20 a , 20 b , 20 c , 20 d , supported by the framework 5 with respective longitudinal axes parallel to the axis of the reel 13 .
- the film 14 coming from the pre-stretch group 15 , carries out, before reaching the palletized load 3 , a specific path in which it is deflected by the bars 20 a , 20 b , 20 c , 20 d multiple times, being partially wound around the surface of the latter.
- the bars 20 a , 20 b , 20 c , 20 d can be rotatably idly supported with respect to the framework 5 , or they can be fixed with respect to the framework 5 itself.
- the wrapping head 1 comprises means 21 for cutting the film 14 along the feed and advancement direction of the film 14 itself, so as to obtain, due to such cutting, a first portion 22 of film 14 and a second portion 23 of film 14 that are distinct and separate from each other, which advance together towards the load 3 .
- the cutting means 21 are interposed between the pre-stretch group 15 and the diverting means 20 .
- the cutting means 21 can for example comprise a blade, a heated body or other devices suitable for precisely separating the two aforesaid portions 22 , 23 of the film 14 .
- the cutting means 21 are supported by the framework 5 , at about half the height with respect to the reel 13 , so as to obtain a first portion 22 of film 14 and a second portion 23 of film 14 of equal height (by height it is intended the dimension of the film 14 perpendicular to the direction of unwinding and feeding of the same).
- the cutting means 21 are movable and/or adjustable upward or downward, with respect to the height of the reel 13 , so as to obtain a first portion 22 of film 14 and a second portion 23 of film 14 of different heights, always intending with height the dimension of the film 14 perpendicular to the direction of unwinding and feeding of the same.
- the wrapping head 1 comprises deflection means 24 for deflecting the first portion 22 of film 14 , suitable to superimpose such first portion 22 on the second portion 23 of film 14 , thus attaining, at the outlet of the wrapping head 1 , a band 25 of double-layer material.
- the deflection means 24 are supported by the framework 5 of the head 1 .
- the deflection means 24 are provided downstream of the cutting means 21 .
- FIG. 4 which shows the head 1 with some parts removed, and where a possible path P of the film 14 is illustrated, in an entirely schematic manner, with dashed line, only for the purpose of improved comprehension).
- the deflection means 24 modify the first feed direction D 1 of the first portion 22 of film 14 , so as to bring the latter substantially corresponding to the second feed direction D 2 of the second portion 23 of film 14 (see FIGS. 8 and 9 ).
- the deflection means 24 attain the movement of the first feed direction D 1 of the first portion 22 of film 14 in a second feed direction D 2 , parallel to the first feed direction D 1 .
- the first portion 22 of film 14 can be superimposed at least partly on the second portion 23 of film 14 and can come to be completely superimposed on the second portion 23 of film 14 substantially corresponding to the feed direction of the second portion 23 of film 14 .
- the deflection means 24 attain the aforesaid movement of the first portion 22 of film 14 , without overturning or folding, maintaining such first portion 22 parallel to itself.
- the deflection means 24 comprise a plurality of deflectors 26 , 27 .
- the deflectors 26 , 27 are positioned one after the other, with reference to the feed direction of the first portion 22 of film 14 , and are configured for attaining the aforesaid deflection of the first feed direction D 1 of the first portion 22 of film 14 .
- the deflection means 24 comprise two deflectors 26 , 27 , and more particularly a first deflector 26 and a second deflector 27 , around which the first portion 22 of the film 14 is wound.
- the first deflector 26 is configured so as to deflect the first portion 22 of the film 14 from a first feed direction D 1 to an intermediate feed direction D 3 which is deflected, with respect to the first feed direction D 1 , by a first deflection angle ⁇ 1 .
- the second deflector 27 is configured so as to further deflect the first portion 22 of the film 14 from the aforesaid intermediate feed direction D 3 to the aforesaid second feed direction D 2 , which is deflected, with respect to the intermediate feed direction D 3 , by a second deflection angle ⁇ 2 .
- the second deflection angle ⁇ 2 substantially corresponds to the first deflection angle ⁇ 1 , but with opposite sign; for example if the first deflection angle ⁇ 1 is 120°, then the second deflection angle ⁇ 2 is ⁇ 120°, bringing the portion 22 of the film 14 back to a final angle of 0°.
- the deflection means 24 could comprise further deflectors: in other words, the same result could be obtained with a number of deflectors greater than two, if the specific needs require it (e.g. for the type of wrapping material used, or for other reasons).
- the first deflection angle ⁇ 1 is 90° and the second deflection angle ⁇ 2 is ⁇ 90°.
- the overall deflection that the first portion 22 of film 14 sustains, traversing the deflection means 24 is thus the result of the algebraic sum of the first deflection angle ⁇ 1 and of the second deflection angle ⁇ 2 , and is thus 0°, i.e. there is a translation with respect to the first feed direction D 1 , in particular, a translation of the first portion of film 22 parallel to itself, but moved lower, as shown in FIG. 9 .
- the first deflector 26 is selectively movable between an inactive position and an operative position.
- the wrapping head 1 can be used according to a conventional use mode, in which the film 14 is wound, around the load 3 , in a single layer.
- the cutting means 21 can be deactivated, in order to use the single-layer film 14 directly as it is unwound from the reel 13 .
- the wrapping head 1 is usable according to the use mode in which the film 14 , previously cut, can be wound around the load 3 in a double layer.
- the passage of the first deflector 26 from the inactive position to the operative position is schematically shown in FIG. 10 .
- the first deflector 26 is represented with dashed line when it is situated in the inactive position, and it is instead shown with solid line when it is in the operative position.
- the passage of the first deflector 26 from the inactive position to the operative position, and vice versa occurs by means of a rigid translation according to a direction which forms a right angle with the symmetry axis of the reel 13 .
- the deflection means 24 comprise a linear actuator 28 , associated with the aforesaid first deflector 26 .
- the linear actuator 28 can be of any type suitable for this purpose, e.g. electromechanical, pneumatic, oil-pressure etc.
- the linear actuator 28 can be fixed, for example, to the first plate 6 of the framework 5 .
- the first deflector 26 can for example be connected to a carriage 29 slidable on guides 30 fixed to the first plate 6 ; the carriage 29 is, in turn, connected to the movable member 31 of the aforesaid linear actuator 28 .
- the first deflector 26 has essentially elongated shape.
- the first deflector 26 has one end connected to the aforesaid linear actuator 28 .
- the first deflector 26 defines a respective first longitudinal axis 32 .
- the first deflector 26 has the lateral surface with shape suitable for allowing the wrapping of the film 14 around it, and also the sliding of the film 14 itself in the feed direction.
- the first deflector 26 can for example have cylindrical shape, or in any case be provided with a lateral surface with suitable curvature.
- the first deflector 26 could also comprise, or be constituted by, a rotatable roller.
- the first longitudinal axis 32 of the first deflector 26 is deflected, with respect to the first feed direction D 1 , by a first deflection angle ⁇ 1 .
- the first deflection angle ⁇ 1 is substantially equal to 45°.
- the deflection means 24 are activatable and deactivatable in a selective manner, during the operation of the head 1 ; in other words the user can decide, during the operation of the head 1 , to carry out a normal single-layer wrapping cycle, or, if necessary, to pass, in a very quick and easy manner, to a double-layer wrapping mode, for a stronger and more rigid wrapping in specific zones of the load.
- the second deflector 27 is selectively movable between a first position, in which it does not carry out any deflection of the first portion 22 of film 14 , and a second position, in which it carries out the deflection of the first portion 22 of film 14 , so as to bring such first portion 22 in superimposition on the second portion 23 , thus attaining, at the outlet of the wrapping head 1 , a band 25 of double-layer material.
- the passage of the second deflector 27 from the first position to the second position, and vice versa occurs by means of a rigid translation of the second deflector 27 according to a direction parallel to the symmetry axis of the reel 13 (i.e. during use, and in most wrapping applications, according to a vertical or substantially vertical direction).
- the deflection means 24 comprise means 33 for translating the second deflector 27 between the aforesaid first position and second position.
- the translation means 33 can be of any type suitable for this purpose.
- the translation means 33 can comprise a guide member 34 fixed to the framework 5 , to which a slider 35 is in turn connected in a slidable manner.
- a support 36 is fixed to the slider 35 ; such support 36 is in turn associated with the second deflector 27 .
- the slider 35 is actuated to slide along the guide member 34 by linear actuation means which can be of any type suitable for the application, e.g. electromechanical, pneumatic, oil-pressure, etcetera.
- the deflection of the first portion 22 of the film 14 can be adjusted and in this manner also the superimposition of the first portion 22 with respect to the second portion 23 can be adjusted.
- the second deflector 27 being moved by means of the translation means 33 , can render the superimposition of the first portion 22 with respect to the second portion 23 partial or complete.
- the second deflector 27 has essentially elongated shape, and defines a respective second longitudinal axis 37 .
- the second deflector 27 has the lateral surface with shape suitable for allowing the wrapping of the film 14 around it, and also the sliding of the film 14 itself in the feed direction.
- the second deflector 27 can for example have cylindrical shape, or in any case be provided with a lateral surface with suitable curvature.
- the second deflector 27 could also comprise or be constituted by a rotatable roller.
- the second longitudinal axis 37 of the second deflector 27 is deflected, with respect to the intermediate feed direction D 3 , by a second deflection angle ⁇ 2 .
- the second deflection angle ⁇ 2 is substantially equal to ⁇ 45°.
- the rust deflection angle ⁇ 1 of the first deflector 26 is substantially equal to half of the rust deflection angle ⁇ 1
- the second deflection angle ⁇ 2 of the second deflector 27 is substantially equal to half of the second deflection angle ⁇ 2 .
- the deflection angle ⁇ 1 of the first deflector 26 is substantially equal to half of the supplementary angle of the first deflection angle ⁇ 1 , i.e. it is substantially equal to 30°, and the same calculation holds true for the deflection angle ⁇ 2 of the second deflector 27 , which is substantially equal to half of the supplementary angle of the second deflection angle ⁇ 2 , i.e. it is substantially equal to ⁇ 30°, with respect to the intermediate feed direction D 3 .
- the deflection means 20 can comprise a further bar 20 e , supported by the framework 5 and placed downstream of the bar 20 d , with reference to the feed direction of the film 14 , which allows directing, with a suitable winding angle, the first portion 22 of the film 14 towards the first deflector 26 .
- the first deflector 26 is translated into its operative position.
- the second deflector 27 is situated (with reference to the plane of the floor, on which the load 3 is supported) at a height slightly greater than that of the first deflector 26 , in a manner such that the first portion 22 of film 14 is wound, in succession, on the external surface of the first deflector 26 and of the second deflector 27 so as to substantially not sustain any deflection with respect to the first feed direction D 1 , due to the mutual positioning between the first deflector 26 and the second deflector 27 .
- the head 1 can carry out the wrapping of the load 3 with a single layer of film 14 .
- first portion 22 and the second portion 23 are fed parallel, or substantially parallel, to each other, and hence wound around the load 3 essentially as if they constituted a film that is intact, even if with a longitudinal cut.
- the second deflector 27 is translated from the first position to the second position, as shown in FIG. 8 (in which the second deflector is represented with a dashed line) and in FIG. 9 .
- the second deflector 27 carries out a downward translation.
- the second deflector 27 travels a section equal to the distance between the upper edge of the first portion 22 of the film 14 and the upper edge of the second portion 23 of the film 14 .
- the first portion 22 of the film 14 being wound around the first deflector 26 , is deflected from the first feed direction D 1 to the intermediate feed direction D 3 , which is deflected, with respect to the first feed direction D 1 , by the first deflection angle ⁇ 1 (which is, in particular, substantially equal to 90°).
- the same first portion 22 of the film 14 being wound around the second deflector 27 , is deflected from the intermediate feed direction D 3 to the second feed direction D 2 which is deflected, with respect to the intermediate feed direction D 3 , by the second deflection angle ⁇ 2 , substantially equal to ⁇ 90°.
- the first portion 22 of film 14 is superimposed on the second portion 23 , and both are fed along the second feed direction D 2 , attaining a band 25 of double-layer material.
- the second deflector 27 can be brought back to its first position of FIG. 8 , in a manner such that the first portion 22 and the second portion 23 of film can be newly fed one parallel to the other in the single-layer configuration.
- Also forming the object of the present invention is a method for wrapping loads, in particular palletized loads.
- the method according to the present invention comprises the steps of:
- such step of deflecting the first portion 22 of film 14 comprises, more in detail, a step of deflecting the first portion 22 from a first feed direction D 1 to an intermediate feed direction D 3 , which is deflected, with respect to said first feed direction D 1 , by a first deflection angle ⁇ 1 .
- the aforesaid step of deflecting the first portion 22 of film 14 further comprises a step of deflecting the first portion 22 from the aforesaid intermediate feed direction D 3 to a second feed direction D 2 which is deflected, with respect to the intermediate feed direction, by a second deflection angle.
- the second feed direction D 2 coincides with the feed direction of the second portion 23 of film 14 .
- the first deflection angle ⁇ 1 is substantially equal to 90° and the second deflection angle ⁇ 2 is substantially equal to ⁇ 90°.
- the invention as conceived allows attaining important technical advantages.
- the wrapping head 1 has the considerably advantage of being able to modify, even during the winding of a load, the working mode, passing from the single-layer configuration to the double-layer wrapping configuration, and vice versa, in relation to the different packaging requirements.
- the double-layer wrapping mode can be used when the base of the load 3 is wrapped, while the single-layer wrapping mode can be used when the central portion of the same load 3 is wrapped.
- the wrapping is carried out by always directing towards the load 3 the same face of the film 14 .
- the double deflection sustained by the first portion 22 determines a double overturning of the film 14 which, at the outlet of the deflection means 24 , has the same orientation that it had before traversing the aforesaid deflection means 24 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
- Packaging Of Machine Parts And Wound Products (AREA)
Abstract
A wrapping head for wrapping loads, particularly palletized loads, including a framework, connectable to the operating end of a handler, and supporting a reel of film made of extensible material, and diverting means, for transferring the film, unwound from the reel, towards the load. The head also includes means for cutting the film, along its feed direction, so as to obtain a first portion of film and a second portion of film that are distinct and separate from each other, and deflection means for the first portion of film, suitable to superimpose the first portion on the second portion, thus attaining, at the outlet of said wrapping head, a double-layer material band.
Description
- The present invention regards a head for wrapping loads, more particularly palletized loads, and the respective wrapping method.
- As is known, the palletized loads consist of one or more goods arranged on a pallet for the purpose of facilitating the movement and the transport thereof.
- In order to prevent falls or overturning of goods, during the transport of a palletized load it is provided to laterally enclosed or wrap the load itself with a layer of extensible material, for example in the form of a plastic material film.
- The wrapping of a palletized load is generally carried out by means of automatic or semiautomatic wrapping stations, comprising means for moving a wrapping head, which carries one or more reels of such extensible material that can be unrolled and wound around the load.
- There are different types of wrapping stations.
- In some types of stations, the palletized load is maintained stationary, while the wrapping head is rotated around the load.
- In other types of stations, the palletized load is driven to rotate around a longitudinal axis thereof, while the wrapping head is situated in a fixed position at a predetermined distance from the rotatable load, and is translatable vertically and parallel to the load, so as to cover the entire lateral surface thereof.
- In this manner, the extensible material of the reel can be unrolled from the wrapping head, coming to form a series of spiral windings around the palletized load, starting from a lower or upper end thereof, up to obtaining a stabilizing covering of the load.
- At the end of the wrapping, the extensible material employed is cut by means of suitable means mounted on the wrapping head, and the film flap thus obtained is fixed to the palletized load. e.g. welded by means of a suitable buffer.
- The wrapping stations briefly described above are susceptible of improvements, mainly with the purpose of increasing, during the transport or during other logistical operations, the stability and the strength of the wrapped load.
- As is known, in fact, a palletized load is subjected, during the transport, to strong stresses, accelerations or decelerations, both longitudinally and transversely.
- In particular, if the reel of plastic material film to be wound around the palletized load has a height comparable to that of the load to be palletized, a typical example is that of the reels of film with height of 1000 mm., and loads to be palletized that are 1200-1500 mm, high, the spiral winding of the film on the load achieves the relatively high height superimpositions of the layers of the film, for example also on the order of 300 mm.
- Such superimposition of the layers of the film is above all verified at the central portion of the load, since the alternating vertical movement of the wrapping head determines the execution of multiple passages at such zone.
- As a consequence thereof, it can happen that the film exerts an excessive pressure in the aforesaid central portion of the load, obtaining a so-called hourglass effect. i.e. with a narrower central part, with the consequent crushing-deformation of possible pliable goods situated in that zone.
- The strong vertical stresses sustained by the load during the transport can temporarily cancel the weight force of the goods of the palletized load, with the consequent reduction of the friction force between one layer of goods and the next, and possible accidental movements between the layers.
- In addition, the portion of the load most subject to goods slipping on the pallet is that in direct contact with the pallet, so that the pallet delimits an abutment surface of the goods that is nearly flat and with low friction level, while in the upper layers the goods, usually having non-perfectly regular shapes, tend to offer greater slipping resistance. Presently, therefore, in order to overcome the abovementioned drawbacks, and in order to make a suitable wrapping of the palletized load, it is provided to quite firmly wrap with the plastic material film at the base of the load, achieving multiple windings around the pallet and around the lower layer of the goods.
- Such practice of firmly and repeatedly wrapping the base of the palletized load with the plastic material film, in addition to not resolving the aforesaid problem of the “hourglass” effect of the palletized load, involves—as can be understood—a considerable increase of the consumption of employed film, as well as a corresponding increase of the consumer costs of the palletized goods.
- The state of the art comprises several documents which illustrate machines and methods for wrapping loads.
- The document WO 2006/032065 A1 describes an apparatus for wrapping goods on a pallet, which comprises a base section for receiving a pallet and distribution means for dispensing a material in order to wrap the goods on a pallet, the distribution means including rotary means in order to allow the material to be twisted while it is applied to the goods on the pallet.
- The document US 2009/293425 A1 describes systems for tracing the use of the material for monitoring and optimizing the use of the extensible film on a wrapping machine. Different uses are also supplied for the data collected from the material tracing system, and different data presentation modes are also supplied.
- The document US 2018/111709 describes an apparatus, associable with a wrapping machine, comprising at least one unwrapping unit for the wrapping machine for wrapping a load with a film and shuttle means movable along a path and adapted to receive and support an unwrapping unit to be substituted and to be disassembled from the wrapping machine and/or from a new unwrapping unit to be mounted on the wrapping machine.
- The document US 2011/088359 A1 presents a wrapping machine for wrapping a tape with at least two extensible films around a product, which comprises a dispenser for dispensing the two extensible films with longitudinal superimposition.
- The U.S. Pat. No. 5,077,956 A describes a method for wrapping a palletized load with a tape of plastic material film whose width is a fraction of the height of the load. The method is provided for a fixed table machine with a stationary load in which the reel of film is moved around the load and consequently unwound in order to form at least one revolution of the tape, after which the tape of film is transversely cut, the latter terminal part of the film tape is combined with the wrapped load and the new first terminal part of the film is fixed and the wrapped load is removed. During at least one step of the wrapping, the reel of film is moved in a path, forming a horizontal ring, and in this step the tap of unwound film is deflected and offset in vertical direction in order to prevent irregular folds in the film.
- The technical task of the present invention is that of improving the state of the art in the field of wrapping palletized loads.
- In the context of such technical task, one object of the present invention is to make a wrapping head for wrapping loads which allows overcoming the previously lamented drawbacks.
- Another object of the present invention is to provide a wrapping head for wrapping loads capable of suitably stabilizing a palletized load with a more limited consumption of plastic material film with respect to the known solutions.
- Still another object is to devise a wrapping head for wrapping loads with versatile use, in order to satisfy different load wrapping requirements.
- Still another object of the present invention is to implement a wrapping head for wrapping loads that is structurally simple and inexpensive.
- A further object of the present invention is to provide a wrapping head for wrapping loads with simple and reliable operation.
- Such task and such objects are achieved by a wrapping head for wrapping loads, more particularly palletized loads, according to the present application.
- The wrapping head comprises a framework, connectable to the operating end of a handler, and supporting a reel of film made of extensible material.
- The head also comprises diverting means for transferring the film, unwound from the reel, towards the load.
- According to one aspect of the invention, the head comprises means for cutting the film, along its feed direction, so as to obtain a first portion of film and a second portion of film that are distinct and separate from each other.
- In addition, the head comprises means for deflecting the first portion of film, suitable to superimpose the first portion on the second portion, thus attaining, at the outlet of said wrapping head, a double-layer material band.
- In addition, the deflection means for the first portion of film are adjustable so as to obtain a partial or complete superimposition of the two film portions.
- This solution allows at least partly obtaining a wrapping of the load that is more solid and thick, when desired, by using the normal film unwound from the reel, with which one obtains, due to the aforesaid expedients, a double-layer band, even without using a greater quantity of material.
- According to a further aspect of the invention, the aforesaid deflection means can be activated and deactivated in a selective manner at the user's discretion, i.e. they can be activated only when requested, during the operation of the head.
- This signifies that the user can decide, during the operation of the head, to carry out a normal single-layer wrapping cycle, or, if necessary, to pass in a very simple and quick manner to a double-layer wrapping mode, for a stronger and more rigid wrapping in specific zones of the load.
- Such task and such objects are also reached by a method for wrapping loads, more particularly palletized loads, according to the present application.
- The wrapping method according to the invention comprises the steps of supplying a reel of film made of extensible material, unwinding the film from the reel, cutting the film along its feed direction, so as to obtain a first portion of film and a second portion of film that are distinct and separate from each other, and deflecting the first portion of film, so as to superimpose such first portion of film on the second portion of film, thus attaining a double-layer material band, and wrapping the load with such band.
- According to one aspect of the invention, the aforesaid step of deflecting the first portion of film comprises a step of deflecting such first portion from a first feed direction to an intermediate feed direction, which is deflected, with respect to such first feed direction, by a first deflection angle.
- According to another aspect of the invention, the aforesaid step of deflecting the first portion of film comprises a step of further deflecting such first portion from the intermediate feed direction to a second feed direction, which is deflected, with respect to such intermediate feed direction, by a second deflection angle; in particular, the second feed direction coincides with the feed direction of the second portion of film.
- The present application refers to preferred and advantageous embodiments of the invention.
- Further aspects and advantages of the present invention will be clearer from the following detailed description of several currently preferred embodiments, illustrated as a merely non-limiting example in the enclosed drawings, in which:
-
FIG. 1 is a perspective view of the wrapping head according to the present invention, in a specific operative step; -
FIG. 2 is a further perspective view of the wrapping head, in which the film has been removed for greater clarity; -
FIG. 3 is a top view of the wrapping head; -
FIG. 4 is another top view of the wrapping head, with some parts removed for greater clarity; -
FIG. 5 is a detail ofFIG. 2 ; -
FIG. 6 is a further perspective view of the wrapping head from a different angle, with some parts removed and with the handler, with which the head is associated, illustrated in a schematic manner with dashed line; -
FIG. 7 is a schematic front view of a wrapping station comprising the wrapping head according to the invention; -
FIG. 8 is a front, schematic and detailed view of the deflection means for the wrapping head, in an initial step in which the first portion of the film is not yet superimposed on the second portion of the film; -
FIG. 9 is a front, schematic and detailed view of the deflection means for the wrapping head, in a subsequent step in which the first portion of the film is superimposed on the second portion of the film, thus attaining a double-layer wrapping material; and -
FIG. 10 is a schematic and detailed top view of the deflection means for the wrapping head. - With reference to the
FIG. 1 ,reference number 1 overall indicates a head for wrapping loads, more particularly palletized loads, according to the present invention. - In the following description, by way of a non-limiting example, reference will be made to a
head 1 included in a wrapping station 2 (FIG. 7 ) in which theload 3, in particular a palletized load, is driven to rotate around a vertical or substantially vertical axis, on a suitablerotatable support platform 4, and the wrappinghead 1 is fixed with respect to theload 3, and only executes vertical or substantially vertical movements. - However, the present invention can also be applied to a wrapping
station 2 in which theload 3 is locally stationary, while the wrappinghead 1 is supported, and driven, to rotate around the aforesaidstationary load 3. - The wrapping
head 1 comprises a support framework 5. - The support framework 5 comprises a
first plate 6, lower during use, and asecond plate 7, upper during use, opposite thefirst plate 6. - The
first plate 6 and thesecond plate 7 can be joined together by means ofelongated connection elements 8, of any type (see for exampleFIG. 6 ). - As shown in the same
FIG. 6 , in an entirely schematic manner and only for the purpose of improved comprehension, the framework 5 of thehead 1 is connectable to the operatingend 9 of ahandler 10, e.g. a robot. - The
handler 10 can for example be a robot of anthropomorphic type, or a Cartesian robot, or a robot of another type. - The
robot 10 has the task of imparting, to the support framework 5 of thehead 1, the necessary movements in order to execute the correct wrapping of the palletizedload 3, according to a specific wrapping program, as is better clarified hereinbelow. - The connection between the operating
end 9 of therobot 10 and the framework 5 is carried out by means of thebrackets 11 fixed, for example, to theelongated connection elements 8. - In particular, two
brackets 11 can be provided, of which one is upper during use and the other lower during use; eachbracket 11 can be provided witheyelets 12, by means of which it is possible to obtain the connection to the operatingend 9. - The framework 5 supports a
reel 13 of afilm 14 made of extensible material suitable for the wrapping of loads, in particular palletized loads, e.g. an extensible plastic material of type known in this application type. - The wrapping
head 1 can also comprise apre-stretch group 15 of thefilm 14 unwound from thereel 13, and intended for the wrapping of theload 3. - The
pre-stretch group 15 is supported by the framework 5. - The
pre-stretch group 15 comprises afirst roller 16 and asecond roller 17, rotatably supported by the framework 5, with the respective rotation axes parallel. - The rotation axes of the
rust roller 16 and of thesecond roller 17 are perpendicular to the planes where respectively thefirst plate 6 and thesecond plate 7 lie. - In one embodiment of the invention, the
first roller 16 and thesecond roller 17 have cylindrical or substantially cylindrical shape; nevertheless, in other embodiments, thefirst roller 16 and thesecond roller 17 could have a different shape. - The lateral surfaces of the
first roller 16 and of thesecond roller 17 are coated with material adapted to attain high friction with thefilm 14; for example, the lateral surfaces of thefirst roller 16 and of thesecond roller 17 can be coated with rubber, or another material with suitable properties. - Such coating of the
first roller 16 and of thesecond roller 17 could also be affected by surface machining, which has the purpose of further increasing the friction with thefilm 14. - The
film 14, unwound from thereel 13, is wound on thefirst roller 16 and then on thesecond roller 17, in this order, before then continuing towards thepalletized load 3. - The
first roller 16 and thesecond roller 17 comprise respective first driving means 18 and second driving means 19, controlled by a control unit for operating the wrappinghead 1, not represented in the figures. - The control unit is configured for commanding the first driving means 18 and the second driving means 19 such that the rotation speed of the
second roller 17 is greater than that of thefirst roller 16. - In this manner, the tangential speed difference of the
second roller 17 with respect to that of thefirst roller 16, to which thefilm 14 adheres due to their special coating, causes a certain stretching of the material with respect to its state when it is wound in thereel 13. - Such stretching of the material of the
film 14 can be carried out for at least two reasons. - The first reason is the reduction of the consumption of material used for wrapping the palletized loads 3, due to the greater length of the
film 14 given the same weight of employed material. - The second reason is that the suitably stretched material adheres in an improved manner to the external surface of the palletized
load 3, causing a wrapping of improved quality. The presence of thepre-stretch group 15 in thewrapping head 1 according to the present invention is however entirely optional. - The wrapping
head 1 also comprises divertingmeans 20 for sending thefilm 14, unwound from thereel 13 and suitably elongated by thepre-stretch group 15, towards theload 3. - In one embodiment of the invention, such diverting
means 20 comprise a plurality ofbars reel 13. - In other words, the
film 14, coming from thepre-stretch group 15, carries out, before reaching thepalletized load 3, a specific path in which it is deflected by thebars - The
bars - According to one aspect of the invention, the wrapping
head 1 comprises means 21 for cutting thefilm 14 along the feed and advancement direction of thefilm 14 itself, so as to obtain, due to such cutting, afirst portion 22 offilm 14 and asecond portion 23 offilm 14 that are distinct and separate from each other, which advance together towards theload 3. - With reference to the path of the
film 14 from thereel 13 to theload 3, the cutting means 21 are interposed between thepre-stretch group 15 and the divertingmeans 20. The cutting means 21 can for example comprise a blade, a heated body or other devices suitable for precisely separating the twoaforesaid portions film 14. - Preferably, but not exclusively, the cutting means 21 are supported by the framework 5, at about half the height with respect to the
reel 13, so as to obtain afirst portion 22 offilm 14 and asecond portion 23 offilm 14 of equal height (by height it is intended the dimension of thefilm 14 perpendicular to the direction of unwinding and feeding of the same). - According to another version of the invention, the cutting means 21 are movable and/or adjustable upward or downward, with respect to the height of the
reel 13, so as to obtain afirst portion 22 offilm 14 and asecond portion 23 offilm 14 of different heights, always intending with height the dimension of thefilm 14 perpendicular to the direction of unwinding and feeding of the same. - According to another aspect of the invention, the wrapping
head 1 comprises deflection means 24 for deflecting thefirst portion 22 offilm 14, suitable to superimpose suchfirst portion 22 on thesecond portion 23 offilm 14, thus attaining, at the outlet of the wrappinghead 1, aband 25 of double-layer material. - The deflection means 24 are supported by the framework 5 of the
head 1. - With reference to the feed path of the
film 14 from thereel 13 towards thepalletized load 3, the deflection means 24 are provided downstream of the cutting means 21. - In addition, the deflection means 24 are interposed between the
bars final bar 20 d of the diverting means 20 (see on this matterFIG. 4 , which shows thehead 1 with some parts removed, and where a possible path P of thefilm 14 is illustrated, in an entirely schematic manner, with dashed line, only for the purpose of improved comprehension). - The deflection means 24 modify the first feed direction D1 of the
first portion 22 offilm 14, so as to bring the latter substantially corresponding to the second feed direction D2 of thesecond portion 23 of film 14 (seeFIGS. 8 and 9 ). - In other words, the deflection means 24 attain the movement of the first feed direction D1 of the
first portion 22 offilm 14 in a second feed direction D2, parallel to the first feed direction D1. - Due to the possibilities of adjusting the deflection means 24, the
first portion 22 offilm 14 can be superimposed at least partly on thesecond portion 23 offilm 14 and can come to be completely superimposed on thesecond portion 23 offilm 14 substantially corresponding to the feed direction of thesecond portion 23 offilm 14. - It must be observed that the deflection means 24 attain the aforesaid movement of the
first portion 22 offilm 14, without overturning or folding, maintaining suchfirst portion 22 parallel to itself. - The deflection means 24 comprise a plurality of
deflectors - The
deflectors first portion 22 offilm 14, and are configured for attaining the aforesaid deflection of the first feed direction D1 of thefirst portion 22 offilm 14. - In the embodiment of the invention illustrated in the figures, the deflection means 24 comprise two
deflectors first deflector 26 and asecond deflector 27, around which thefirst portion 22 of thefilm 14 is wound. - The
first deflector 26 is configured so as to deflect thefirst portion 22 of thefilm 14 from a first feed direction D1 to an intermediate feed direction D3 which is deflected, with respect to the first feed direction D1, by a first deflection angle α1. - The
second deflector 27 is configured so as to further deflect thefirst portion 22 of thefilm 14 from the aforesaid intermediate feed direction D3 to the aforesaid second feed direction D2, which is deflected, with respect to the intermediate feed direction D3, by a second deflection angle α2. According to one version of the invention the second deflection angle α2 substantially corresponds to the first deflection angle α1, but with opposite sign; for example if the first deflection angle α1 is 120°, then the second deflection angle α2 is −120°, bringing theportion 22 of thefilm 14 back to a final angle of 0°. - In some embodiments of the invention, the deflection means 24 could comprise further deflectors: in other words, the same result could be obtained with a number of deflectors greater than two, if the specific needs require it (e.g. for the type of wrapping material used, or for other reasons).
- In the embodiment of the invention illustrated in the figures, the first deflection angle α1 is 90° and the second deflection angle α2 is −90°.
- The overall deflection that the
first portion 22 offilm 14 sustains, traversing the deflection means 24, is thus the result of the algebraic sum of the first deflection angle α1 and of the second deflection angle α2, and is thus 0°, i.e. there is a translation with respect to the first feed direction D1, in particular, a translation of the first portion offilm 22 parallel to itself, but moved lower, as shown inFIG. 9 . - According to one aspect of the invention, the
first deflector 26 is selectively movable between an inactive position and an operative position. - When the
first deflector 26 is situated in the inactive position, the wrappinghead 1 can be used according to a conventional use mode, in which thefilm 14 is wound, around theload 3, in a single layer. - In this situation, the cutting means 21 can be deactivated, in order to use the single-
layer film 14 directly as it is unwound from thereel 13. - If, however, the
first deflector 26 is situated in the operative position, the wrappinghead 1 is usable according to the use mode in which thefilm 14, previously cut, can be wound around theload 3 in a double layer. - The passage of the
first deflector 26 from the inactive position to the operative position is schematically shown inFIG. 10 . - In such figure, the
first deflector 26 is represented with dashed line when it is situated in the inactive position, and it is instead shown with solid line when it is in the operative position. - The passage of the
first deflector 26 from the inactive position to the operative position, and vice versa occurs by means of a rigid translation according to a direction which forms a right angle with the symmetry axis of thereel 13. - For this purpose, the deflection means 24 comprise a
linear actuator 28, associated with the aforesaidfirst deflector 26. - The
linear actuator 28 can be of any type suitable for this purpose, e.g. electromechanical, pneumatic, oil-pressure etc. - The
linear actuator 28 can be fixed, for example, to thefirst plate 6 of the framework 5. - The
first deflector 26 can for example be connected to acarriage 29 slidable onguides 30 fixed to thefirst plate 6; thecarriage 29 is, in turn, connected to themovable member 31 of the aforesaidlinear actuator 28. - The
first deflector 26 has essentially elongated shape. - The
first deflector 26 has one end connected to the aforesaidlinear actuator 28. - The
first deflector 26 defines a respective firstlongitudinal axis 32. - The
first deflector 26 has the lateral surface with shape suitable for allowing the wrapping of thefilm 14 around it, and also the sliding of thefilm 14 itself in the feed direction. - The
first deflector 26 can for example have cylindrical shape, or in any case be provided with a lateral surface with suitable curvature. - The
first deflector 26 could also comprise, or be constituted by, a rotatable roller. - The first
longitudinal axis 32 of thefirst deflector 26 is deflected, with respect to the first feed direction D1, by a first deflection angle β1. - In particular, according to the embodiment of the figures, the first deflection angle β1 is substantially equal to 45°.
- According to another aspect of the invention, the deflection means 24 are activatable and deactivatable in a selective manner, during the operation of the
head 1; in other words the user can decide, during the operation of thehead 1, to carry out a normal single-layer wrapping cycle, or, if necessary, to pass, in a very quick and easy manner, to a double-layer wrapping mode, for a stronger and more rigid wrapping in specific zones of the load. - More particularly, the
second deflector 27 is selectively movable between a first position, in which it does not carry out any deflection of thefirst portion 22 offilm 14, and a second position, in which it carries out the deflection of thefirst portion 22 offilm 14, so as to bring suchfirst portion 22 in superimposition on thesecond portion 23, thus attaining, at the outlet of the wrappinghead 1, aband 25 of double-layer material. - As shown in
FIGS. 8 and 9 , the passage of thesecond deflector 27 from the first position to the second position, and vice versa, occurs by means of a rigid translation of thesecond deflector 27 according to a direction parallel to the symmetry axis of the reel 13 (i.e. during use, and in most wrapping applications, according to a vertical or substantially vertical direction). - For this purpose, the deflection means 24 comprise means 33 for translating the
second deflector 27 between the aforesaid first position and second position. - The translation means 33 can be of any type suitable for this purpose.
- For example, the translation means 33 can comprise a
guide member 34 fixed to the framework 5, to which aslider 35 is in turn connected in a slidable manner. - As shown in the detail of
FIG. 5 , asupport 36 is fixed to theslider 35;such support 36 is in turn associated with thesecond deflector 27. - The
slider 35 is actuated to slide along theguide member 34 by linear actuation means which can be of any type suitable for the application, e.g. electromechanical, pneumatic, oil-pressure, etcetera. - It must be observed therefore that the deflection of the
first portion 22 of thefilm 14 can be adjusted and in this manner also the superimposition of thefirst portion 22 with respect to thesecond portion 23 can be adjusted. Thesecond deflector 27, being moved by means of the translation means 33, can render the superimposition of thefirst portion 22 with respect to thesecond portion 23 partial or complete. - In addition, given that also the cutting means 21 are movable and adjustable upward or downward, with respect to the height of the
reel 13, also the twoportions film 14 can be varied. - Hence, the maximum flexibility is obtained for making the
wrapping 2 for theload 3, withportions - The
second deflector 27 has essentially elongated shape, and defines a respective secondlongitudinal axis 37. - As with the
first deflector 26, also thesecond deflector 27 has the lateral surface with shape suitable for allowing the wrapping of thefilm 14 around it, and also the sliding of thefilm 14 itself in the feed direction. - The
second deflector 27 can for example have cylindrical shape, or in any case be provided with a lateral surface with suitable curvature. - The
second deflector 27 could also comprise or be constituted by a rotatable roller. - The second
longitudinal axis 37 of thesecond deflector 27 is deflected, with respect to the intermediate feed direction D3, by a second deflection angle β2. - In particular, according to the embodiment of the figures, also the second deflection angle β2 is substantially equal to −45°.
- As can be observed in the particular case of
FIG. 9 , in order to obtain the desired result, the rust deflection angle β1 of thefirst deflector 26 is substantially equal to half of the rust deflection angle α1, like the second deflection angle β2 of thesecond deflector 27 is substantially equal to half of the second deflection angle α2. - In other cases, for example with a first deflection angle α1 of 120° and a second deflection angle α2 of −120°, the deflection angle β1 of the
first deflector 26 is substantially equal to half of the supplementary angle of the first deflection angle α1, i.e. it is substantially equal to 30°, and the same calculation holds true for the deflection angle β2 of thesecond deflector 27, which is substantially equal to half of the supplementary angle of the second deflection angle α2, i.e. it is substantially equal to −30°, with respect to the intermediate feed direction D3. - In one embodiment of the invention, the deflection means 20 can comprise a
further bar 20 e, supported by the framework 5 and placed downstream of thebar 20 d, with reference to the feed direction of thefilm 14, which allows directing, with a suitable winding angle, thefirst portion 22 of thefilm 14 towards thefirst deflector 26. - In light of that described above, the operation of the wrapping
head 1 according to the invention is intuitive. - In a preliminary step of arranging the
head 1, if in the wrapping it is desired to use, for some zones of theload 3, the double-layer wrapping mode, thefirst deflector 26 is translated into its operative position. - As is observed, for example, in
FIGS. 1, 8, 10 , when thefirst deflector 26 is situated in its operative position, it is approached to thesecond deflector 27, which is situated in its first position; more particularly, as shown inFIG. 8 , thesecond deflector 27 is situated (with reference to the plane of the floor, on which theload 3 is supported) at a height slightly greater than that of thefirst deflector 26, in a manner such that thefirst portion 22 offilm 14 is wound, in succession, on the external surface of thefirst deflector 26 and of thesecond deflector 27 so as to substantially not sustain any deflection with respect to the first feed direction D1, due to the mutual positioning between thefirst deflector 26 and thesecond deflector 27. - In this operating configuration, the
head 1 can carry out the wrapping of theload 3 with a single layer offilm 14. - More particularly, the
first portion 22 and thesecond portion 23, even if previously separated by the cutting means 21, are fed parallel, or substantially parallel, to each other, and hence wound around theload 3 essentially as if they constituted a film that is intact, even if with a longitudinal cut. - When it is desired, however, to carry out the wrapping of the
load 3 with double-layer mode—e.g. in some portions of the load, such as the base—thesecond deflector 27 is translated from the first position to the second position, as shown inFIG. 8 (in which the second deflector is represented with a dashed line) and inFIG. 9 . - In particular—with reference to a normal situation of use of the
head 1—in the passage from the first position to the second position, thesecond deflector 27 carries out a downward translation. - In substance, the
second deflector 27 travels a section equal to the distance between the upper edge of thefirst portion 22 of thefilm 14 and the upper edge of thesecond portion 23 of thefilm 14. - In this manner, the
first portion 22 of thefilm 14, being wound around thefirst deflector 26, is deflected from the first feed direction D1 to the intermediate feed direction D3, which is deflected, with respect to the first feed direction D1, by the first deflection angle α1 (which is, in particular, substantially equal to 90°). - In addition, the same
first portion 22 of thefilm 14, being wound around thesecond deflector 27, is deflected from the intermediate feed direction D3 to the second feed direction D2 which is deflected, with respect to the intermediate feed direction D3, by the second deflection angle α2, substantially equal to −90°. - In this manner, the
first portion 22 offilm 14 is superimposed on thesecond portion 23, and both are fed along the second feed direction D2, attaining aband 25 of double-layer material. - If it is desired, after having carried out, around the
load 3, a certain number of windings with theaforesaid band 25 of double-layer material, thesecond deflector 27 can be brought back to its first position ofFIG. 8 , in a manner such that thefirst portion 22 and thesecond portion 23 of film can be newly fed one parallel to the other in the single-layer configuration. - Also forming the object of the present invention is a method for wrapping loads, in particular palletized loads.
- The method according to the present invention comprises the steps of:
- supplying a
reel 13 offilm 14 made of extensible material; - unwinding the
film 14 from thereel 13; - cutting the
film 14 along its feed direction, so as to obtain afirst portion 22 offilm 14 and asecond portion 23 offilm 14 that are distinct and separate from each other; deflecting thefirst portion 22 offilm 14, so as to superimpose thefirst portion 22 offilm 14 on thesecond portion 23 offilm 14, so as to attain aband 25 of double-layer material; and - wrapping the
load 3 withsuch band 25 of double-layer material. - According to one aspect of the invention, such step of deflecting the
first portion 22 offilm 14 comprises, more in detail, a step of deflecting thefirst portion 22 from a first feed direction D1 to an intermediate feed direction D3, which is deflected, with respect to said first feed direction D1, by a first deflection angle α1. - According to another aspect of the invention, the aforesaid step of deflecting the
first portion 22 offilm 14 further comprises a step of deflecting thefirst portion 22 from the aforesaid intermediate feed direction D3 to a second feed direction D2 which is deflected, with respect to the intermediate feed direction, by a second deflection angle. The second feed direction D2 coincides with the feed direction of thesecond portion 23 offilm 14. - In one embodiment of particular practical interest of the method according to the invention, the first deflection angle α1 is substantially equal to 90° and the second deflection angle α2 is substantially equal to −90°.
- The invention as conceived allows attaining important technical advantages.
- As seen, first of all the
wrapping head 1 according to the present invention has the considerably advantage of being able to modify, even during the winding of a load, the working mode, passing from the single-layer configuration to the double-layer wrapping configuration, and vice versa, in relation to the different packaging requirements. - Only by way of a non-limiting example, the double-layer wrapping mode can be used when the base of the
load 3 is wrapped, while the single-layer wrapping mode can be used when the central portion of thesame load 3 is wrapped. - In addition thereto, it is underlined that, due to the solution according to the present invention, the double-layer wrapping is carried out with consumption of further material with respect to the single-layer solution, since the
same film 14 is used, longitudinally cut into twoportions - In addition, it is observed that, also in the double-layer wrapping mode, the wrapping is carried out by always directing towards the
load 3 the same face of thefilm 14. - Indeed, the double deflection sustained by the first portion 22 (for winding on the
first deflector 26 and then on the second deflector 27) in substance determines a double overturning of thefilm 14 which, at the outlet of the deflection means 24, has the same orientation that it had before traversing the aforesaid deflection means 24. - This circumstance is important since it is known that, usually, the two faces of the
film 14 used in this application type are not identical, but rather the one preferably directed towards theload 3 has better adhesion characteristics. For example, such better adhesion characteristics are due to the presence of a glue on the face of thefilm 14 directed towards theload 3. - These results are obtained with a structurally simple and inexpensive technical solution, that is also easy to use and versatile.
- It was thus seen that the invention attains the proposed objects.
- The invention thus conceived is susceptible of numerous modifications and variations, all falling within the scope of the inventive concept.
- In addition, all the details can be substituted by technically equivalent elements.
- In practice, the materials used, as well as the contingent shapes and sizes, can be of any type in accordance with the requirements without departing from the protective scope of the following claims.
Claims (22)
1. A wrapping head for wrapping loads, particularly palletized loads, comprising a framework, connectable to the operating end of a handler, and supporting a reel of film made of extensible material, and diverting means for transferring the film, unwound from the reel, towards the load, further comprising means for cutting the film, along its feed direction, so as to obtain a first portion of film and a second portion of film that are distinct and separate from each other, and deflection means for the first portion of film, suitable to move said first portion, parallel to itself, in order to at least partly superimpose said first portion on said second portion.
2. The wrapping head according to claim 1 , wherein said deflection means are provided with adjustment means for partly or completely superimposing the first portion on the second portion, thus attaining, at the outlet of said wrapping head, a band of material that is partly or completely double-layer.
3. The wrapping head according to claim 1 , wherein said deflection means comprise a first deflector and a second deflector, around which the first portion of the film is wound.
4. The wrapping head according to claim 3 , wherein said first deflector is configured so as to deflect the first portion of the film from a first feed direction to an intermediate feed direction which is tilted, with respect to said first feed direction, by a first deflection angle.
5. The wrapping head according to claim 4 , wherein said second deflector is configured so as to further deflect the first portion of the film from said intermediate feed direction to a second feed direction which is tilted, with respect to said intermediate feed direction, by a second deflection angle, said second feed direction substantially corresponding to the feed direction of the second portion of film.
6. The wrapping head according to claim 5 , wherein said first deflection angle and said second deflection angle are substantially equal and with opposite sign.
7. The wrapping head according to claim 6 , wherein said first deflection angle is substantially equal to 90° and said second deflection angle is substantially equal to −90°.
8. The wrapping head according to claim 4 , wherein said first deflector has essentially elongated shape, and it defines a respective first longitudinal axis tilted, with respect to said first feed direction, by a first tilt angle.
9. The wrapping head according to claim 8 , wherein said second deflector has essentially elongated shape, and it defines a respective second longitudinal axis tilted, with respect to said intermediate feed direction, by a second tilt angle.
10. The wrapping head according to claim 9 , wherein said first tilt angle is substantially equal to half the supplementary angle of the first deflection angle and wherein said second tilt angle is substantially equal to half the supplementary angle of the second deflection angle.
11. The wrapping head according to claim 10 , wherein said first tilt angle is substantially equal to 45° and said second tilt angle is substantially equal to −45°.
12. The wrapping head according to claim 4 , wherein said deflection means can be activated or deactivated in a selective manner during the operation of said head, so as to select carrying out a normal single-layer wrapping cycle, or a double-layer wrapping cycle.
13. The wrapping head according to claim 12 , wherein said second deflector is selectively movable between a first position, in which it does not carry out any deflection of the first portion of the film, and a second position, in which it carries out the deflection of the first portion of film, so as to bring the first portion to be superimposed on the second portion, thus attaining, at the outlet of said wrapping head, a band of double-layer material.
14. The wrapping head according to claim 13 , wherein the passage of said second deflector from said first position to said second position, and vice versa, occurs by means of a rigid translation of said second deflector according to a direction parallel to the symmetry axis of the reel of film.
15. The wrapping head according to claim 14 , wherein said deflection means comprise translation means for translating said second deflector, between said first position and second position, said translation means comprising a guide member fixed to said framework, to which a slider is in turn connected in a slidable manner, said slider associated with said deflector, said slider being actuated to slide along said guide member by linear actuation means.
16. The wrapping head according to claim 3 , wherein said first deflector is selectively movable between an inactive position and an operative position, such that when said first deflector is situated in said inactive position, the wrapping head can be used according to a conventional use mode, in which the film is wound, around the load, in a single layer, while when said first deflector is situated in said operative position, the wrapping head is usable according to the use mode in which the film, previously cut, can be wound, around the load, in a double layer.
17. The wrapping head according to claim 16 , wherein the passage of said first deflector from said inactive position to said operative position, and vice versa, occurs by means of a rigid translation according to a direction that forms a right angle with the symmetry axis of the reel of film.
18. The wrapping head according to claim 1 , wherein said cutting means are movable and/or adjustable upward or downward, with respect to the height of the reel, so as to obtain a first portion of film and a second portion of film of different heights, the height being intended as the dimension of the film perpendicular to the unwinding and feeding direction thereof.
19. A method for wrapping loads, comprising the steps of:
supplying a reel of film made of extensible material;
unwinding the film from the reel;
characterized in that it comprises cutting the film along its feed direction, so as to obtain a first portion of film and a second portion of film that are distinct and separate from each other;
deflecting said first portion of film, parallel to itself, so as to at least partly superimpose said first portion of film on said second portion of film, thus at least partly attaining a band of double-layer material; and wrapping the load with said band.
20. The wrapping method according to claim 19 , wherein said step of deflecting said first portion of film comprises a step of deflecting said first portion from a first feed direction to an intermediate feed direction which is tilted, with respect to said first feed direction, by a first deflection angle.
21. The wrapping method according to claim 20 , wherein said step of deflecting said first portion of film comprises a step of further deflecting said first portion from said intermediate feed direction to a second feed direction which is tilted, with respect to said intermediate feed direction, by a second deflection angle, said second feed direction substantially corresponding to the feed direction of said second portion of film.
22. The wrapping method according to claim 21 , wherein said first deflection angle is substantially equal to 90° and said second deflection angle is substantially equal to −90°.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102019000015842 | 2019-09-06 | ||
IT102019000015842A IT201900015842A1 (en) | 2019-09-06 | 2019-09-06 | HEAD FOR THE WRAPPING OF LOADS, PARTICULARLY PALLETIZED LOADS, AND THE RESPECTIVE WRAPPING METHOD |
PCT/IB2020/058261 WO2021044368A1 (en) | 2019-09-06 | 2020-09-04 | Wrapping head for wrapping loads, particularly palletized loads, and method of operation thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
US20220340315A1 true US20220340315A1 (en) | 2022-10-27 |
Family
ID=69173264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/640,696 Pending US20220340315A1 (en) | 2019-09-06 | 2020-09-04 | Wrapping head for wrapping loads, particularly palletized loads, and method of operation thereof |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220340315A1 (en) |
EP (1) | EP4025505A1 (en) |
CA (1) | CA3153058A1 (en) |
IT (1) | IT201900015842A1 (en) |
WO (1) | WO2021044368A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220371758A1 (en) * | 2021-05-19 | 2022-11-24 | A.C.M.I. - Societa' Per Azioni | Machine for stabilising palletised loads with tensioning fins |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT202100029924A1 (en) * | 2021-11-26 | 2023-05-26 | Tosa S P A | Machinery for wrapping an article, having a return system |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5077956A (en) * | 1989-08-02 | 1992-01-07 | Newtec International (Societe Anonyme) | Method for banding a palletized load |
US5168685A (en) * | 1990-06-25 | 1992-12-08 | Tsukasa Kasei Kogyo Kabushiki Kaisha | Method and apparatus for packing amassed goods with airing |
US5447009A (en) * | 1993-09-22 | 1995-09-05 | Newtec International (Societe Anonyme) | Method and apparatus of banded wrapping of a palletized load |
US7908831B1 (en) * | 2007-11-27 | 2011-03-22 | Dugan Michael E | Stretch wrap rope converter and wrapping system |
US20110088359A1 (en) * | 2008-06-27 | 2011-04-21 | Brocard Pierre | Method and device for wrapping products |
US8053056B2 (en) * | 2000-02-18 | 2011-11-08 | Illinios Tool Works Inc. | Stretch film and method for producing a stretch film |
US20190084703A1 (en) * | 2017-09-18 | 2019-03-21 | Phoenix Wrappers ULC | Methods and Apparatuses for Securing a Palletized Load with Stretch Film |
US11434029B1 (en) * | 2020-04-03 | 2022-09-06 | Darrel Bison | Shipping pallet wrapping system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006032065A1 (en) * | 2004-09-16 | 2006-03-23 | Gavin Weir | An apparatus for wrapping goods on a pallet |
WO2009148965A2 (en) * | 2008-05-29 | 2009-12-10 | Atlantic Corporation | Systems for monitoring and controlling usage of materials |
ES2602449T3 (en) * | 2011-08-16 | 2017-02-21 | Aetna Group S.P.A. | Apparatus and method for changing unwinding units in a wrapping machine |
-
2019
- 2019-09-06 IT IT102019000015842A patent/IT201900015842A1/en unknown
-
2020
- 2020-09-04 WO PCT/IB2020/058261 patent/WO2021044368A1/en unknown
- 2020-09-04 CA CA3153058A patent/CA3153058A1/en not_active Abandoned
- 2020-09-04 EP EP20785599.0A patent/EP4025505A1/en not_active Withdrawn
- 2020-09-04 US US17/640,696 patent/US20220340315A1/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5077956A (en) * | 1989-08-02 | 1992-01-07 | Newtec International (Societe Anonyme) | Method for banding a palletized load |
US5168685A (en) * | 1990-06-25 | 1992-12-08 | Tsukasa Kasei Kogyo Kabushiki Kaisha | Method and apparatus for packing amassed goods with airing |
US5447009A (en) * | 1993-09-22 | 1995-09-05 | Newtec International (Societe Anonyme) | Method and apparatus of banded wrapping of a palletized load |
US8053056B2 (en) * | 2000-02-18 | 2011-11-08 | Illinios Tool Works Inc. | Stretch film and method for producing a stretch film |
US7908831B1 (en) * | 2007-11-27 | 2011-03-22 | Dugan Michael E | Stretch wrap rope converter and wrapping system |
US20110088359A1 (en) * | 2008-06-27 | 2011-04-21 | Brocard Pierre | Method and device for wrapping products |
US20190084703A1 (en) * | 2017-09-18 | 2019-03-21 | Phoenix Wrappers ULC | Methods and Apparatuses for Securing a Palletized Load with Stretch Film |
US11434029B1 (en) * | 2020-04-03 | 2022-09-06 | Darrel Bison | Shipping pallet wrapping system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220371758A1 (en) * | 2021-05-19 | 2022-11-24 | A.C.M.I. - Societa' Per Azioni | Machine for stabilising palletised loads with tensioning fins |
US11760514B2 (en) * | 2021-05-19 | 2023-09-19 | A.C.M.I.—Societa' Per Azioni | Machine for stabilizing palletised loads with tensioning fins |
Also Published As
Publication number | Publication date |
---|---|
IT201900015842A1 (en) | 2021-03-06 |
WO2021044368A1 (en) | 2021-03-11 |
CA3153058A1 (en) | 2021-03-11 |
EP4025505A1 (en) | 2022-07-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20220340315A1 (en) | Wrapping head for wrapping loads, particularly palletized loads, and method of operation thereof | |
US7908831B1 (en) | Stretch wrap rope converter and wrapping system | |
US11111038B2 (en) | Perfected machine and method for packaging in extensible film products fed in groups or individually | |
US11858669B2 (en) | Device for applying cover sheets to palletised loads | |
US10213971B2 (en) | Forming machine for forming a hollow body, in particular a casing of a solid propellant engine, and deposit head for such a forming machine | |
US20170088380A1 (en) | Splicing device | |
WO2009130531A1 (en) | Process for wrapping loads, in particular palletised loads, and relative system | |
EP2589540A1 (en) | Wrapping machine | |
US11827393B2 (en) | Machine and method for stabilising palletised loads | |
US20130001349A1 (en) | Unreeling assembly, particularly for labeling devices | |
CN112368213B (en) | Mobile winding machine | |
US4884385A (en) | Interleaved spiral wrapping of foam product and stretch film for packaging carbonless paper rolls | |
CN204054698U (en) | Cord strip lays the laying apparatu of the strips being covered with rubber layer | |
EP3472078A1 (en) | Machine and method for wrapping products | |
US20030097940A1 (en) | Method and machine for packaging skeins, shaped as rings, of a flexible, elongated element | |
WO2011138204A2 (en) | Automatic machine for packaging textile reels and similar products | |
EP0481567B1 (en) | Automatic peripheral wrapping machine for rolls of material in strips such as cloth | |
US4936459A (en) | Interleaved spiral wrapping of foam product and stretch film for packaging carbonless paper rolls | |
CN214241449U (en) | Unwinding device of part packing | |
US20170313535A1 (en) | Bundle-wrapping feedstock | |
KR100505130B1 (en) | Manufacture device of label | |
US6044619A (en) | Reel slitting device and method | |
US20230356865A1 (en) | Apparatus for wrapping a load and associated methods | |
US6866213B2 (en) | Rolled web products having a web wound in an oscillating fashion | |
US6641080B2 (en) | Method and apparatus for winding a web |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |