EP0522928A1 - Method and device for packaging the lateral sides and the top part of a palettized load - Google Patents

Method and device for packaging the lateral sides and the top part of a palettized load Download PDF

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Publication number
EP0522928A1
EP0522928A1 EP92401863A EP92401863A EP0522928A1 EP 0522928 A1 EP0522928 A1 EP 0522928A1 EP 92401863 A EP92401863 A EP 92401863A EP 92401863 A EP92401863 A EP 92401863A EP 0522928 A1 EP0522928 A1 EP 0522928A1
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EP
European Patent Office
Prior art keywords
axis
film
load
face
reel
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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.)
Granted
Application number
EP92401863A
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German (de)
French (fr)
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EP0522928B1 (en
Inventor
Jean Paul Charles Martin-Cocher
Georges Jaconelli
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Newtec International SA
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Newtec International SA
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Publication of EP0522928A1 publication Critical patent/EP0522928A1/en
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    • 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

Definitions

  • the invention relates to a method and a machine for packaging the vertical lateral faces of the upper end of a palletized load.
  • the packaging is carried out in the form of a straight wrapping or, more often , helical and concerns the vertical lateral face of the load.
  • the cylindrical lateral face and the two circular end faces are covered with a reel of paper of generally cylindrical shape by wrapping the reel of film remaining in a generally fixed location and the reel of paper being doubly displaced by pivoting around a vertical axis and around its axis of revolution, horizontal.
  • this technique is related to the cylindrical shape of the charge and cannot be transposed and applied to a load such as a palletized load.
  • the end faces receive as many film layers as axial film layers on the cylindrical side face, which is generally excessive and has drawbacks.
  • the aim is to improve the cohesive force applied by the film to the palletized load and, to this end, the film strip is applied to the tops of the load.
  • a machine for depositing a strip of film on two opposite vertical faces and the upper and lower horizontal faces of the palletized load.
  • this machine is not suitable for depositing film on the four vertical side faces, except excessive consumption of film, excess thickness on the end faces and questionable sealing on the vertical side faces.
  • this technique necessarily involves covering the lower horizontal face which may not be desired or possible.
  • the invention therefore aims to solve the problem of covering an upper end face of a palletized load with a packaging film when the vertical lateral face of the load is also covered with packaging film by the technique of wrapping.
  • the invention provides a machine for packaging a load using a film strip whose width is at least equal or of the order of the transverse dimension of the upper end face to be covered. .
  • the invention offers numerous advantages: the same film can be used both for covering the lateral face and the upper end face without discontinuity. The cohesive force of the load, its protection and its tightness are improved. The technical qualities of the film can be implemented for both the side face and the end face. The overlap of the lateral face and of the end face is obtained without annoying excess thicknesses, without excessive multiplication of superimposed film layers.
  • the machine according to the invention essentially comprises the means implemented for the wrapping with in addition only the second pivoting and the relative sliding implemented for the covering of the upper end face. The operating rate of such a machine is high, the machine being moreover simultaneously simple and reliable. It is also possible to envisage different variants of implementation of the invention with stretch film or shrink film; with total or only partial recovery; with single or double or straight helical wrapping.
  • the invention is more particularly applicable to a palletized load with which the vertical lateral face and the upper end end face are covered.
  • a film strip is used, the width of which is at least equal or of the order of the transverse dimension of the upper end face to be covered so as to allow a total covering of this face by means of a single layer of film if necessary.
  • the relative pivoting movement is carried out around the second axis of the order of a quarter to three quarters of a turn to change the film reel from a generally vertical situation to a generally horizontal situation (or vice versa).
  • the relative pivoting movement around the first pivot axis is stopped to cover the upper end face to be covered.
  • a relative sliding movement is carried out of the axis of the film reel and of the load in a general direction parallel to the first axis, which allows helical wrapping.
  • the relative pivoting movement is carried out around the second axis when the film reel has been brought into a general position away from the side face and from the end face to be covered and the film strip leaves the side face in the vicinity of the upper end face to be covered.
  • the relative sliding movement of the axis of the film reel and of the load in the general direction parallel to the first axis is stopped. that is, the film reel then remains substantially in the same horizontal plane.
  • a film strip is used, the width of which is a fraction of the distance separating the two end faces of the load. At least one helical wrapping of the lateral face is carried out. This wrapping is with contiguous turns or overlapping. The end face is preferably covered between two helical wrapping in opposite directions.
  • stretch film is used and in a second embodiment of heat-shrinkable film. In the case of stretch film, the film strip is stretched between the load and the film reel or by pre-stretching before its application to the load. The film strip is also stretched when covering the upper end face to be covered.
  • a palletized load having a lateral face extending in a generally vertical direction and upper and lower end faces extending in a generally horizontal direction.
  • the first axis is then generally vertical and during the wrapping, coincident, substantially with that of the load.
  • the second axis has a general horizontal direction.
  • the load is pivotally driven around its vertical axis, the axis of the film reel being arranged to be pivotally displaced about a horizontal axis substantially orthogonal to the vertical median plane of the machine and to slide in a generally vertical direction.
  • the load is fixed for the wrapping, the axis of the film reel being pivoted about the vertical axis of the load, pivoting around the same horizontal axis and sliding in the general vertical direction .
  • the relative sliding movement along the second axis is achieved by sliding the load alone and in a second mode by sliding the axis of the film reel alone. Possibly, there is a sliding of the load and the axis of the coil. Variants and embodiments can be combined.
  • FIGS. 1A to 1F a palletized load 1 is shown limited by a lateral face 2 closed on itself and two faces of horizontal ends respectively upper 3 and lower 4.
  • a load has an axis general vertical 5.
  • the lateral face 2 comprises four panels 2a, 2b, 2c, 2d situated in vertical planes two by two perpendicular to each other defining four vertical edges 6 parallel to the axis 5.
  • the palletized load 1 is packaged by means of a plastic film 7 coming from a film reel 8 of axis 9.
  • the film 7 covers the lateral face 2 and the upper horizontal face 3.
  • the process uses a packaging machine which comprises means 10 for supporting the load 1; means 11 for supporting the film reel 8 and first means (not shown) such as a motor or geared motor for ensuring relative pivoting movement of the axis 9 of the film reel and means 10 for supporting the load around 'a first axis having a general vertical direction and more precisely merged with axis 5.
  • first means such as a motor or geared motor for ensuring relative pivoting movement of the axis 9 of the film reel and means 10 for supporting the load around 'a first axis having a general vertical direction and more precisely merged with axis 5.
  • the support means 10 comprise a table with a vertical axis 12 then merged with the axis 5.
  • the means 11 comprise or are associated with a vertical mast 13, placed next to the table 10 on a support forming sole 14. On the mast 13 is slidably mounted vertically, by means of sliding members 15, a carriage 16 supporting the coil 8.
  • the invention is also applicable to other types of machine, in particular those with a fixed rotating table and a film reel with an axis rotating around the axis of the table, the carriage 16 then being arranged to describe a double sliding movement. vertical and rotating along a ring surrounding the table 10.
  • the film 7 has a width which is a fraction of the distance between the two end faces 3 and 4 while being at least equal to or of the order of the transverse dimension of the face d end 3 to be covered.
  • transverse dimension is understood here to mean the dimension of the face 3 counted orthogonally to a second axis which is discussed below.
  • the film used is more especially a stretch film which is stretched before than being applied to the load by means of a pre-stretching device (not shown) carried by the carriage 16.
  • This pre-stretching device may include one or more rollers on which the film 7 passes so that the film is unwound downstream at a speed greater than the speed upstream.
  • an initial end portion 18 of the film strip 7 is associated with the lateral face 2 of the load by means, for example, of a holding clip (not shown) carried by or in the vicinity of the table 10. This association occurs in the vicinity of the lower horizontal face 4. In this situation and in the envisaged embodiment, the axis 9 of the film reel 8 is then placed vertically.
  • the palletized load 1 are pivotally driven around the axes 5, 12 in the direction of the arrows R which allows the wrapping, the axis 9 of the film reel 8 remaining vertical, the film 7 coming s '' apply flat and over its entire width on the lateral face 2.
  • the film reel 8 Being a helical wrapping of the lateral face 2 with the film 7, with turns coming into overlap, the film reel 8 is slid along its axis 9 upwards and the upper horizontal face 3 (arrow C). In this situation, the film reel 8 is therefore moved parallel to the first axis 12. This upward vertical sliding of the film reel 8 is continued until the film reel 8 is at least partially above the horizontal plane of the upper face 3. In this situation, the film reel 8 is therefore slightly separated from the side face 2 and from the upper face to be covered 3. In addition, the film 7 then leaves the side face 2 in the vicinity of the upper face to cover 3.
  • the relative pivoting movement of the axis 9 of the film reel 8 and of the load 1 (in this case the pivoting of the load) around the first axis 12 allows, gradually, the deposition of the film strip 7 on the side face 2.
  • At least one relative movement of sliding of the axis 9 of the film reel and of the load 1 is carried out substantially along the second axis 20.
  • This sliding movement is carried out on a stroke of the order ( or slightly higher) than the longitudinal dimension of the end face 3.
  • This longitudinal dimension is counted along the second axis 20.
  • This sliding movement results in progressive overlap of the upper end face 3 to be covered with the film 7 on one side of the side face or opposite side (FIG. 1C).
  • FIG. 1D a relative pivoting movement is carried out of the order of a quarter or three quarters of turns of the axis 9 of the film reel and of the load 1 around the second axis 20. This has the effect of bringing the film reel into a substantially vertical position, parallel to and close to the lateral face 2 of the load 1. It is then possible to start the relative pivoting movement around the first axis 12.
  • the second axis 20 is substantially perpendicular to the vertical median plane of the machine joining the axis 12 and the vertical main axis of the mast 13, which makes it possible to avoid any annoying interference between the parts of the machine (or of the load) between they.
  • FIGS. 1E and 1F a second pass is illustrated making it possible to cover the end face 3 with the strip of film 7, the latter being arranged in several superposed layers. Depending on the embodiment, these layers are parallel and / or crossed.
  • a second descending helical wrapping then crosses the ascending helical wrapping previously produced on the lateral face 2.
  • the machine also comprises second means for ensuring a relative pivoting movement of the axis 9 of the film reel 8 and means 10 for supporting the load around the second pivot axis 20. These second means are arranged to allow the film reel to be either in a vertical position or in a horizontal position.
  • the machine also includes third means to ensure a relative sliding movement of the axis 9 of the film reel 8 and of the support means 10 of the load 1 substantially along the second axis 20 over a certain stroke.
  • the machine also includes control means acting on the first, second and third means to ensure the two relative pivoting movements and the relative sliding movement in order to coordinate their operation so as to allow the steps of the method described above.
  • the machine also comprises fourth means for ensuring a relative sliding movement of the axis 9 of the film reel 8 and means 10 for supporting the load in a general direction parallel to the first axis 12.
  • These third means comprise the member sliding 15.
  • the control means then also act on these fourth sliding means to coordinate their operation with that of the first, second and third means of pivoting and relative sliding.
  • the machine further comprises means for gripping an initial free end portion 18 of film strip 7 such as a clamp located in the vicinity of the support table 10; means for securing an end end portion of this strip of film on film already deposited on the load or on the load itself as well as means for cross-cutting the film strip. These different means can be carried by the same clamp.
  • the second means ensure the relative locking of the axis 9 in at least two operating positions angularly separated from each other by about a quarter or three quarters of a turn.
  • the machine uses stretch film, it includes means for stretching or pre-stretching the film strip which can also be active during the covering of the upper face 3.
  • the second relative pivoting means may include a carriage in two parts, namely a part 16a associated directly with the mast 3 and arranged to be able to slide thereon and a part 16b mounted on the part 16a constituting or supporting the pin of the reel of film 8 and, where appropriate, the stretching or pre-stretching means.
  • These two parts 16a, 16b are connected to each other by a pivot axis coaxial with the axis 20.
  • Motor organs such as motor, gearmotor, gear, toothed belts or the like more particularly carried by the part 16a allow to ensure the relative pivoting of the part 16b relative to the part 16a around the axis 20.
  • the third relative sliding means along the second axis 20 act and are associated with the support table 10 or, possibly with load support elements associated with the table 10.
  • the table 10 is a lockable roller table. It is associated with a conveyor also with lockable rollers, coplanar. Drive means ensure the driving or respectively the blocking of the table and the conveyor as well as the pivoting or respectively the blocking in rotation of the table 10.
  • a position is provided in which the conveyor extends the table, the rollers being all of axes parallel.
  • the positive drive of the rollers, of the table and of the conveyor makes it possible to pass the load 1 with which is associated film 7 of the table 10 to the conveyor, which corresponds to the sliding stroke considered, the table and the conveyor extending parallel along the axis 20.
  • the film reel 8 is mounted to slide vertically on the mast 13 and to pivot around the axis 20 but not to slide along the axis 20.
  • the table 10 is stopped with its rollers extending parallel (and not orthogonally) to the axis 20 and there is provided under the table 10 a lifting and horizontally sliding means which can pass between the rollers between a lowered retracted position and a higher position above the table 10 (proximal position) and an upper position away from the table 1 (distal position).
  • the third sliding means are associated with the carriage 16.
  • the part 16a is itself, in two parts, namely a part 16c mounted directly on the mast 13 with vertical sliding and having a sliding force extending along the axis 20 and a part 16d slidingly mounted on the slide 16c, by means of suitable drive means (even endless, gearmotor, rollers, drive chain).
  • Part 16b is mounted on part 16d.
  • the table 10 is conventional, that is to say that it is not specially arranged for sliding of the load 1 during the wrapping process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Pallets (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Container Filling Or Packaging Operations (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)

Abstract

Method for packaging a palettised load by means of plastic film, in which an initial end part of a film strip, coming from a reel, is associated with the lateral side of the load; a pivoting movement of the shaft of the reel of film and of the load around a first axis is effected and the film strip is deposited on this lateral side; the film is deposited on the upper end side to be covered; the film strip is cut transversely and is joined to the film deposited or to the load; a pass is performed in which the pivoting movement is halted; a relative pivoting movement of one quarter to three quarters of a revolution of the shaft of the reel and of the load about a second axis is effected; in this situation, at least one sliding movement of the shaft of the reel and of the load along the second axis is effected; then a pivoting movement of one quarter to three quarters of a revolution of the shaft of the reel and of the load about the second axis is effected; and the pivoting movement about the first axis is recommenced. <IMAGE>

Description

L'invention concerne un procédé et une machine d'emballage des faces latérale verticale d'extrémité supérieure d'une charge palettisée.The invention relates to a method and a machine for packaging the vertical lateral faces of the upper end of a palletized load.

On connaît déjà un procédé d'emballage d'une charge limitée par une face latérale fermée sur elle-même et deux faces d'extrémité supérieure et inférieure au moyen de film en matière plastique dans lequel :

  • on associe une partie extrême initiale d'une bande de film provenant d'une bobine de film à la face latérale de la charge ;
  • on effectue un mouvement relatif de pivotement de l'axe de la bobine de film et de la charge autour d'un premier axe de pivotement ayant une direction générale veticale et on dépose progressivement la bande de film sur cette face latérale ;
  • on dépose du film sur au moins une face d'extrémité à recouvrir et en particulier la face supérieure ;
  • on coupe transversalement la bande de film et on solidarise la partie extrême terminale de celle-ci au film déjà déposé ou à la charge.
There is already known a method of packaging a load limited by a side face closed on itself and two upper and lower end faces by means of plastic film in which:
  • an initial end part of a film strip coming from a film reel is associated with the lateral face of the load;
  • a relative pivoting movement of the axis of the film reel and of the load is carried out around a first pivot axis having a general vetical direction and the film strip is gradually deposited on this lateral face;
  • film is deposited on at least one end face to be covered and in particular the upper face;
  • the film strip is cut transversely and the end end portion thereof is secured to the film already deposited or to the load.

On connaît également une machine permettant de mettre en oeuvre ce procédé comprenant :

  • . des moyens support de la charge ;
  • . des moyens support d'une bobine de bande de film ;
  • . des premiers moyens pour assurer un mouvement relatif de pivotement de l'axe de la bobine de film et des moyens support de la charge autour d'un premier axe de pivotement ayant une direction générale verticale.
A machine is also known for implementing this method comprising:
  • . load support means;
  • . means for supporting a reel of film strip;
  • . first means for ensuring a relative pivoting movement of the axis of the film reel and means for supporting the load around a first pivoting axis having a general vertical direction.

On peut se référer aux documents suivants : US-A-4 255 918, US-A-4 271 657, US-A-4 336 679, US-A-4 387 548, US-A-4 387 552, US-A-4 418 510, US-A-4 050 221, US-A-4 302 920, FR-A-2 417 167, EP-A-0 110 751, FR-A-2 535 297, FR-A-2 572 359, EP-A-0 180 517, FR-A-2 281 275, EP-A-0 229 736, EP-A-0 032 140, US-A-4 409 776.We can refer to the following documents: US-A-4 255 918, US-A-4 271 657, US-A-4 336 679, US-A-4 387 548, US-A-4 387 552, US- A-4 418 510, US-A-4 050 221, US-A-4 302 920, FR-A-2 417 167, EP-A-0 110 751, FR-A-2 535 297, FR-A- 2,572,359, EP-A-0 180,517, FR-A-2,281,275, EP-A-0,229,736, EP-A-0,032,140, US-A-4,409,776.

Dans le cas où la charge palettisée est de forme générale parallélépipédique (ou du type "sans palette" car la charge est elle-même organisée pour former support) l'emballage est réalisé sous la forme d'un banderolage droit ou, le plus souvent, hélicoïdal et concerne la face latérale verticale de la charge. Lorsque l'on souhaite recouvrir également la face horizontale supérieure de la charge on est alors contraint, par une opération distincte et en mettant en oeuvre un dispositif distinct, de déposer une feuille dite de toit. Cela est donc complexe.In the case where the palletized load is of generally parallelepiped shape (or of the "without pallet" type because the load is itself organized to form a support) the packaging is carried out in the form of a straight wrapping or, more often , helical and concerns the vertical lateral face of the load. When it is also desired to cover the upper horizontal face of the load, we are then forced, by a separate operation and using a separate device, to deposit a so-called roof sheet. This is therefore complex.

Selon le document EP-A-0 229 736 on recouvre la face latérale cylindrique et les deux faces d'extrémité circulaires d'une bobine de papier de forme générale cylindrique par banderolage la bobine de film restant dans un emplacement général fixe et la bobine de papier étant doublement déplacée à pivotement autour d'un axe vertical et autour de son axe de révolution, horizontal. Mais cette technique est liée à la forme cylindrique de la charge et ne peut être transposée et appliquée à une charge telle qu'une charge palettisée. De plus, les faces d'extrémité reçoivent autant de couches de film que de couches de film axiales sur la face latérale cylindrique, ce qui est généralement excessif et présente des inconvénients.According to document EP-A-0 229 736, the cylindrical lateral face and the two circular end faces are covered with a reel of paper of generally cylindrical shape by wrapping the reel of film remaining in a generally fixed location and the reel of paper being doubly displaced by pivoting around a vertical axis and around its axis of revolution, horizontal. But this technique is related to the cylindrical shape of the charge and cannot be transposed and applied to a load such as a palletized load. In addition, the end faces receive as many film layers as axial film layers on the cylindrical side face, which is generally excessive and has drawbacks.

Selon le document FR-A-2 505 775 on vise à améliorer la force de cohésion appliquée par le film sur la charge palettisée et, à cet effet, on applique la bande de film sur des sommets de la charge. Il s'ensuit une sorte de "triangulation" de la charge avec la bande de film. Toutefois, celle-ci est insusceptible, en l'état, de permettre un emballage de la charge avec recouvrement total de ses faces latérale verticale et supérieure horizontale.According to document FR-A-2 505 775, the aim is to improve the cohesive force applied by the film to the palletized load and, to this end, the film strip is applied to the tops of the load. There follows a sort of "triangulation" of the load with the film strip. However, it is impossible, as it stands, to allow packaging of the load with total covering of its vertical lateral and horizontal upper faces.

Selon le document US-A- 14 409 776, il est décrit un procédé et une machine d'emballage d'une charge palettisée par banderolage hélicoïdal ascendant puis descendant avec du film ayant une face adhésive. Le film est retourné sur lui-même entre les deux banderolages pour assurer la solidarisation grâce à un chariot support de la bobine de film monté pivotant à 180° entre ses deux positions extrêmes de fonctionnement.According to document US-A-14 409 776, there is described a method and a machine for packaging a palletized load by ascending and then descending helical wrapping with film having an adhesive face. The film is turned over on itself between the two wrappers to ensure the joining by means of a support carriage for the film reel mounted pivoting 180 ° between its two extreme operating positions.

On connaît aussi une machine destinée à déposer une bande de film sur deux faces verticales opposées et les faces horizontales supérieure et inférieure de la charge palettisée. Mais cette machine n'est pas adaptée au dépôt de film sur les quatre faces latérales verticales, sauf consommation excessive de film, surépaisseur sur les faces d'extrémité et étanchéité douteuse sur les faces latérales verticales. De plus, cette technique implique, nécessairement, le recouvrement de la face horizontale inférieure ce qui peut ne pas être souhaité ou possible.A machine is also known for depositing a strip of film on two opposite vertical faces and the upper and lower horizontal faces of the palletized load. However, this machine is not suitable for depositing film on the four vertical side faces, except excessive consumption of film, excess thickness on the end faces and questionable sealing on the vertical side faces. In addition, this technique necessarily involves covering the lower horizontal face which may not be desired or possible.

Pour déposer du film à la fois sur les faces latérales verticales et horizontales supérieures d'une charge palettisée, on connaît enfin la technique du houssage. Toutefois, cette technique est généralement plus complexe à mettre en oeuvre que celle du banderolage.In order to deposit film on both the vertical vertical and horizontal lateral faces of a palletized load, the technique of covering is finally known. However, this technique is generally more complex to implement than that of wrapping.

Dans le cas de machines d'emballage de charges palettisées par banderolage hélicoïdal du film sur ses faces latérales verticales on connaît également des variantes dans lesquelles on associe à la machine un dispositif distinct de dépose d'une feuille de toit. La machine qui résulte de cette association est cependant particulièrement complexe avec les inconvénients inhérents.In the case of machines for packaging palletized loads by helical wrapping of the film on its vertical lateral faces, variants are also known in which a separate device for depositing a roof sheet is associated with the machine. The machine which results from this association is however particularly complex with the inherent drawbacks.

L'invention vise donc à résoudre le problème du recouvrement d'une face d'extrémité supérieure d'une charge palettisée avec un film d'emballage lorsque la face latérale verticale de la charge est également recouverte de film d'emballage par la technique du banderolage.The invention therefore aims to solve the problem of covering an upper end face of a palletized load with a packaging film when the vertical lateral face of the load is also covered with packaging film by the technique of wrapping.

A cet effet, l'invention propose, selon un premier aspect, un procédé d'emballage d'une charge palettisée limitée par une face latérale verticale fermée sur elle-même et deux faces d'extrémité supérieure et inférieure, au moyen de film en matière plastique dans lequel :

  • on associe une partie extrême initiale d'une bande de film provenant d'une bobine de film à la face latérale de la charge ;
  • on effectue un mouvement relatif de pivotement de l'axe de la bobine de film et de la charge autour d'un premier axe substantiellement confondu avec l'axe vertical de la charge et ayant une direction générale verticale et par suite de ce mouvement on dépose progressivement la bande de film sur cette face latérale ;
  • on dépose du film sur la face d'extrémité supérieure à recouvrir ;
  • on coupe transversalement la bande de film et on solidarise la partie extrême terminale de celle-ci au film déposé ou à la charge,
  • on dépose sur la face d'extrémité supérieure à recouvrir du film provenant de la bobine de film et, à cet effet, on réalise lorsque la bande de film est au voisinage de la face d'extrémité supérieure au moins une passe dans laquelle :
  • on cesse le mouvement relatif de pivotement autour du premier axe ;
  • on effectue un mouvement relatif de pivotement de l'ordre d'un quart ou de trois quarts de tour de l'axe de la bobine de film et de la charge autour d'un second axe ayant une direction générale horizontale et on amène ainsi la bobine de film depuis une position substantiellement verticale et parallèle à et proche de la face latérale de la charge jusqu'à une position générale proche de et parallèle à la face d'extrémité supérieure à recouvrir, l'axe de la bobine de film étant alors substantiellement orthogonal au second axe ;
  • dans cette situation, on effectue au moins un mouvement relatif de coulissement de l'axe de la bobine de film et de la charge substantiellement le long du second axe sur une course de l'ordre de la dimension longitudinale de la face d'extrémité supérieure de la charge comptée le long du second axe jusqu'à la recouvrir avec le film ;
  • puis on effectue un mouvement relatif de pivotement de l'ordre d'un quart ou de trois quarts de tour de l'axe de la bobine de film et de la charge autour du second axe jusqu'à amener la bobine de film dans une positon substantiellement parallèle à et proche de la face latérale de la charge ;
  • on recommence le mouvement relatif de pivotement autour du premier axe.
To this end, the invention proposes, according to a first aspect, a method of packaging a palletized load limited by a vertical lateral face closed on itself and two upper and lower end faces, by means of film in plastic material in which:
  • an initial end part of a film strip coming from a film reel is associated with the lateral face of the load;
  • a relative pivoting movement of the axis of the film reel and of the load is carried out around a first axis substantially coincident with the vertical axis of the load and having a general vertical direction and as a result of this movement, the film strip is gradually deposited on this lateral face;
  • film is deposited on the upper end face to be covered;
  • the film strip is cut transversely and the end end portion thereof is secured to the film deposited or to the load,
  • at least one pass is deposited on the upper end face to be covered with film coming from the film reel and, to this end, when the film strip is in the vicinity of the upper end face:
  • the relative pivoting movement around the first axis is stopped;
  • a relative pivoting movement of the order of a quarter or three-quarters of a turn is made of the axis of the film reel and of the load around a second axis having a generally horizontal direction and the film reel from a substantially vertical position parallel to and close to the side face of the load to a general position close to and parallel to the upper end face to be covered, the axis of the film reel then being substantially orthogonal to the second axis;
  • in this situation, at least one relative sliding movement of the axis of the film reel and of the load is effected substantially along the second axis over a stroke of the order of the longitudinal dimension from the upper end face of the charge counted along the second axis until covering it with the film;
  • then a relative pivoting movement of the order of a quarter or three-quarters of a turn is made of the axis of the film reel and of the load around the second axis until the film reel is brought into a position substantially parallel to and close to the lateral face of the load;
  • the relative pivoting movement around the first axis is started again.

Selon un second aspect, l'invention propose une machine d'emballage d'une charge mettant en oeuvre une bande de film dont la laize est au moins égale ou de l'ordre de la dimension transversale de la face d'extrémité supérieure à recouvrir.According to a second aspect, the invention provides a machine for packaging a load using a film strip whose width is at least equal or of the order of the transverse dimension of the upper end face to be covered. .

L'invention offre de nombreux avantages : le même film peut être utilisé à la fois pour le recouvrement de la face latérale et de la face d'extrémité supérieure sans discontinuité. La force de cohésion de la charge, sa protection et son étanchéité sont améliorées. Les qualités techniques du film peuvent être mises en oeuvre à la fois pour la face latérale et la face d'extrémité. Le recouvrement de la face latérale et de la face d'extrémité est obtenu sans surépaisseurs gênantes, sans multiplication excessive de couches de film superposées. La machine conforme à l'invention comporte essentiellement les moyens mis en oeuvre pour le banderolage avec en plus seulement le second pivotement et le coulissement relatifs mis en oeuvre pour le recouvrement de la face d'extrémité supérieure. La cadence de fonctionnement d'une telle machine est élevée, la machine étant de plus simultanément simple et fiable. Il est possible également d'envisager différentes variantes de mise en oeuvre de l'invention avec du film étirable ou du film rétractable ; avec recouvrement total ou seulement partiel ; avec banderolage hélicoïdal simple ou double ou droit. Dans le cas d'un film étirable, il est possible d'avoir des taux d'étirage différents pour les différentes parties de la charge ce qui permet d'améliorer sa cohésion. L'invention est plus spécialement applicable à une charge palettisée dont sont recouvertes la face latérale verticale et la face d'extrémité d'extrémité supérieure.The invention offers numerous advantages: the same film can be used both for covering the lateral face and the upper end face without discontinuity. The cohesive force of the load, its protection and its tightness are improved. The technical qualities of the film can be implemented for both the side face and the end face. The overlap of the lateral face and of the end face is obtained without annoying excess thicknesses, without excessive multiplication of superimposed film layers. The machine according to the invention essentially comprises the means implemented for the wrapping with in addition only the second pivoting and the relative sliding implemented for the covering of the upper end face. The operating rate of such a machine is high, the machine being moreover simultaneously simple and reliable. It is also possible to envisage different variants of implementation of the invention with stretch film or shrink film; with total or only partial recovery; with single or double or straight helical wrapping. In the case of a stretch film, it is possible to have different stretching rates for the different parts of the load, which makes it possible to improve its cohesion. The invention is more particularly applicable to a palletized load with which the vertical lateral face and the upper end end face are covered.

Selon d'autres caractéristiques du procédé selon l'invention, on met en oeuvre une bande de film dont la laize est au moins égale ou de l'ordre de la dimension transversale de la face d'extrémité supérieure à recouvrir de manière à permettre un recouvrement total de cette face au moyen d'une seule couche de film si nécessaire. On effectue la mouvement relatif de pivotement autour du second axe de l'ordre d'un quart à trois quarts de tour pour faire passer la bobine de film d'une situation généralement verticale à une situation généralement horizontale (ou inversement). On cesse le mouvement relatif de pivotement autour du premier axe de pivotement pour le recouvrement de la face d'extrémité supérieure à recouvrir. Pendant le dépôt de la bande de film sur la face latérale, on effectue un mouvement de coulissement relatif de l'axe de la bobine de film et de la charge dans une direction générale parallèle au premier axe ce qui permet un banderolage hélicoïdal. On effectue le mouvement relatif de pivotement autour du second axe lorsque la bobine de film a été amenée dans une position générale écartée de la face latérale et de la face d'extrémité à recouvrir et que la bande de film quitte la face latérale au voisinage de la face d'extrémité supérieure à recouvrir. Selon une variante, une fois le mouvement relatif de pivotement autour du second axe commencé, on cesse le mouvement de coulissement relatif de l'axe de la bobine de film et de la charge dans la direction générale parallèle au premier axe, c'est-à-dire que la bobine de film reste alors substantiellement dans un même plan horizontal. On peut réaliser plusieurs passes pour recouvrir la face d'extrémité supérieure à recouvrir avec plusieurs couches superposées, parallèles et/ou croisées. On met en oeuvre une bande de film dont la laize est une fraction de la distance séparant les deux faces d'extrémité de la charge. On réalise au moins un banderolage hélicoïdal de la face latérale. Ce banderolage est à spires jointives ou à recouvrement. Le recouvrement de la face d'extrémité est réalisé préférentiellement entre deux banderolages hélicoïdaux de sens opposés. Dans un premier mode de réalisation on met en oeuvre du film étirable et dans un second mode de réalisation du film thermo-rétractable. Dans la cas de film étirable, on étire la bande de film entre la charge et la bobine de film ou par pré-étirage avant son application sur la charge. On étire également la bande de film lors du recouvrement de la face d'extrémité supérieure à recouvrir.According to other characteristics of the method according to the invention, a film strip is used, the width of which is at least equal or of the order of the transverse dimension of the upper end face to be covered so as to allow a total covering of this face by means of a single layer of film if necessary. The relative pivoting movement is carried out around the second axis of the order of a quarter to three quarters of a turn to change the film reel from a generally vertical situation to a generally horizontal situation (or vice versa). The relative pivoting movement around the first pivot axis is stopped to cover the upper end face to be covered. During the deposition of the film strip on the lateral face, a relative sliding movement is carried out of the axis of the film reel and of the load in a general direction parallel to the first axis, which allows helical wrapping. The relative pivoting movement is carried out around the second axis when the film reel has been brought into a general position away from the side face and from the end face to be covered and the film strip leaves the side face in the vicinity of the upper end face to be covered. According to a variant, once the relative pivoting movement around the second axis has started, the relative sliding movement of the axis of the film reel and of the load in the general direction parallel to the first axis is stopped. that is, the film reel then remains substantially in the same horizontal plane. Several passes can be made to cover the upper end face to be covered with several superimposed, parallel and / or crossed layers. A film strip is used, the width of which is a fraction of the distance separating the two end faces of the load. At least one helical wrapping of the lateral face is carried out. This wrapping is with contiguous turns or overlapping. The end face is preferably covered between two helical wrapping in opposite directions. In a first embodiment, stretch film is used and in a second embodiment of heat-shrinkable film. In the case of stretch film, the film strip is stretched between the load and the film reel or by pre-stretching before its application to the load. The film strip is also stretched when covering the upper end face to be covered.

On met en oeuvre une charge palettisée ayant une face latérale s'étendant dans une direction générale verticale et des faces d'extrémité supérieure et inférieure s'étendant dans une direction générale horizontale. Le premier axe est alors de direction générale verticale et pendant le banderolage, confondu, sensiblement avec celui de la charge. Le second axe a une direction générale horizontale. Dans une première variante, pour le banderolage, la charge est entraînée à pivotement autour de son axe vertical, l'axe de la bobine de film étant agencé pour être déplacé à pivotement autour d'un axe horizontal sensiblement orthogonal au plan vertical médian de la machine et à coulissement selon une direction générale verticale. Selon une seconde variante, la charge est fixe pour le banderolage, l'axe de la bobine de film étant entraîné à pivotement autour de l'axe vertical de la charge, à pivotement autour du même axe horizontal et à coulissement selon la direction générale verticale.A palletized load is used having a lateral face extending in a generally vertical direction and upper and lower end faces extending in a generally horizontal direction. The first axis is then generally vertical and during the wrapping, coincident, substantially with that of the load. The second axis has a general horizontal direction. In a first variant, for wrapping, the load is pivotally driven around its vertical axis, the axis of the film reel being arranged to be pivotally displaced about a horizontal axis substantially orthogonal to the vertical median plane of the machine and to slide in a generally vertical direction. According to a second variant, the load is fixed for the wrapping, the axis of the film reel being pivoted about the vertical axis of the load, pivoting around the same horizontal axis and sliding in the general vertical direction .

Selon un autre aspect et un premier mode de réalisation, le mouvement de coulissement relatif le long du second axe est réalisé par un coulissement de la charge seule et dans un second mode par coulissement de l'axe de la bobine de film seule. Eventuellement, il y a coulissement combiné de la charge et de l'axe de la bobine. Les variantes et les modes de réalisation peuvent être combinés.According to another aspect and a first embodiment, the relative sliding movement along the second axis is achieved by sliding the load alone and in a second mode by sliding the axis of the film reel alone. Possibly, there is a sliding of the load and the axis of the coil. Variants and embodiments can be combined.

Selon d'autres caractéristique de la machine, celle-ci comprend, en outre, des quatrièmes moyens pour assurer un mouvement relatif de coulissement de l'axe de la bobine de film et des moyens support de la charge dans une direction générale parallèle au premier axe, les moyens de commande agissant sur les quatrièmes moyens de coulissement pour coordonner leur fonctionnement avec celui des premiers, seconds et troisièmes moyens de pivotement et coulissement relatif. La machine peut comprendre également, en outre, des moyens de saisie d'une partie extrême initiale de bande de film ; des moyens de solidarisation d'une partie extrême terminale de bande de film sur du film déjà déposé ou sur la charge ; et des moyens de coupe transversale de la bande de film. Les seconds moyens de pivotement relatif assurent un blocage relatif dans au moins deux positions de fonctionnement écartées angulairement l'une de l'autre d'environ un quart ou trois quarts de tour. Il en résulte que la machine peut fonctionner avec la bobine de film verticale ou horizontale, selon les phases opératoires. Dans le cas d'une machine mettant en oeuvre du film étirable, celle-ci peut comporter des moyens d'étirage ou de pré-étirage de la bande de film. Les moyens support de la charge comprennent une table de direction générale horizontale, donc d'axe vertical ; les moyens support d'une bobine de film comprennent au moins un mât de direction générale verticale et un chariot support de bobine de film porté directement ou indirectement par le mât, monté à coulissement vertical et à pivotement autour d'un axe horizontal orthogonal à l'axe de la bobine de film et orthogonal au plan vertical médian de la machine reliant l'axe de la table à celui du mât. Selon une première variante correspondant à la première variante de procédé déjà décrite, la table est montée pour pivoter autour d'un axe de direction générale verticale et le mât est fixe. Selon une seconde variante, la table est fixe et le chariot est agencé pour décrire un double mouvement de coulissement vertical et de rotation le long d'un anneau entourant la table. Egalement, la machine peut comprendre deux modes de réalisation correspondant à ceux déjà mentionnés pour le procédé. Le premier dans lequel la table ou des éléments supports de charge associés à la table sont montés à coulissement le long du second axe. Le second ou le coulissement concerne les moyens supports de la bobine de film ou des éléments supports de la bobine associés à ces moyens. Les variantes et les modes de réalisation peuvent être combinés. Les autres caractéristiques de l'invention seront bien comprises grâce à la description qui suivra d'une forme possible de réalisation dans le cas d'une charge palettisée dont on recouvre les faces latérales verticales et la face horizontale supérieure par banderolage hélicoïdal la charge étant montée mobile à pivotement autour de son axe vertical, et les dessins annexés dans lesquels :

  • Les figures 1A, 1B, 1C, 1D, 1E et 1F sont six vues schématiques en perspective illustrant les phases successives du procédé selon l'invention ainsi que la machine selon l'invention.
  • Les figures 2A et 2B sont deux vues schématiques en perspective, partielles, illustrant deux phases du procédé selon une autre variante de machine.
According to other characteristics of the machine, the latter further comprises fourth means for ensuring a relative sliding movement of the axis of the film reel and means for supporting the load in a general direction parallel to the first axis, the control means acting on the fourth sliding means to coordinate their operation with that of the first, second and third means of pivoting and relative sliding. The machine can also further comprise means for gripping an initial end portion of the film strip; means for securing an end end portion of film strip on film already deposited or on the load; and means for cross-cutting the film strip. The second relative pivoting means ensure relative locking in the minus two operating positions angularly spaced from each other by about a quarter or three quarters of a turn. As a result, the machine can operate with the vertical or horizontal film reel, depending on the operating phases. In the case of a machine using stretch film, this may include means for stretching or pre-stretching the film strip. The load support means comprise a generally horizontal steering table, therefore with a vertical axis; the means for supporting a film reel comprise at least one mast of general vertical direction and a film reel support carriage carried directly or indirectly by the mast, mounted to slide vertically and pivot about a horizontal axis orthogonal to the axis of the film reel and orthogonal to the vertical median plane of the machine connecting the axis of the table to that of the mast. According to a first variant corresponding to the first variant of the process already described, the table is mounted to pivot around an axis of generally vertical direction and the mast is fixed. According to a second variant, the table is fixed and the carriage is arranged to describe a double movement of vertical sliding and rotation along a ring surrounding the table. Also, the machine can include two embodiments corresponding to those already mentioned for the process. The first in which the table or load support elements associated with the table are slidably mounted along the second axis. The second or sliding relates to the support means of the film reel or of the support elements of the reel associated with these means. Variants and embodiments can be combined. The other characteristics of the invention will be clearly understood thanks to the description which follows of a possible embodiment in the case of a palletized load whose covers the vertical lateral faces and the upper horizontal face by helical wrapping, the load being pivotally mounted to pivot about its vertical axis, and the attached drawings in which:
  • Figures 1A, 1B, 1C, 1D, 1E and 1F are six schematic perspective views illustrating the successive phases of the process according to the invention as well as the machine according to the invention.
  • Figures 2A and 2B are two schematic perspective views, partial, illustrating two phases of the process according to another variant of the machine.

On se réfère maintenant plus spécialement aux figures 1A à 1F sur lesquelles est représentée une charge palettisée 1 limitée par une face latérale 2 fermée sur elle-même et deux faces d'extrémités horizontales respectivement supérieure 3 et inférieure 4. Une telle charge présente un axe général vertical 5. La face latérale 2 comporte quatre panneaux 2a, 2b, 2c, 2d situés dans des plans verticaux deux à deux perpendiculaires entre eux définissant quatre arêtes 6 verticales parallèles à l'axe 5.Reference is now made more specifically to FIGS. 1A to 1F on which a palletized load 1 is shown limited by a lateral face 2 closed on itself and two faces of horizontal ends respectively upper 3 and lower 4. Such a load has an axis general vertical 5. The lateral face 2 comprises four panels 2a, 2b, 2c, 2d situated in vertical planes two by two perpendicular to each other defining four vertical edges 6 parallel to the axis 5.

La charge palettisée 1 est emballée au moyen d'un film 7 en matière plastique provenant d'une bobine de film 8 d'axe 9.The palletized load 1 is packaged by means of a plastic film 7 coming from a film reel 8 of axis 9.

Dans la forme d'exécution illustrée par les figures, le film 7 recouvre la face latérale 2 et la face horizontale supérieure 3.In the embodiment illustrated by the figures, the film 7 covers the lateral face 2 and the upper horizontal face 3.

Le procédé met en oeuvre une machine d'emballage qui comprend des moyens 10 support de la charge 1 ; des moyens 11 support de la bobine de film 8 et des premiers moyens (non représentés) tels que moteur ou motoréducteur pour assurer un mouvement relatif de pivotement de l'axe 9 de la bobine de film et des moyens 10 support de la charge autour d'un premier axe ayant une direction générale verticale et plus précisément confondu avec l'axe 5.The process uses a packaging machine which comprises means 10 for supporting the load 1; means 11 for supporting the film reel 8 and first means (not shown) such as a motor or geared motor for ensuring relative pivoting movement of the axis 9 of the film reel and means 10 for supporting the load around 'a first axis having a general vertical direction and more precisely merged with axis 5.

Dans la forme de réalisation considérée, les moyens support 10 comprennent une table d'axe 12 vertical alors confondu avec l'axe 5. Les moyens 11 comprennent ou sont associés à un mât 13, vertical, placé à côté de la table 10 sur un support formant semelle 14. Sur le mât 13 est monté coulissant verticalement, grâce à des organes de coulissement 15, un chariot 16 supportant la bobine 8.In the embodiment considered, the support means 10 comprise a table with a vertical axis 12 then merged with the axis 5. The means 11 comprise or are associated with a vertical mast 13, placed next to the table 10 on a support forming sole 14. On the mast 13 is slidably mounted vertically, by means of sliding members 15, a carriage 16 supporting the coil 8.

L'invention est également applicable à d'autres types de machines notamment celles à table fixe en rotation et bobine de film d'axe tournant autour de l'axe de la table, le chariot 16 étant alors agencé pour décrire un double mouvement de coulissement vertical et de rotation le long d'un anneau entourant la table 10.The invention is also applicable to other types of machine, in particular those with a fixed rotating table and a film reel with an axis rotating around the axis of the table, the carriage 16 then being arranged to describe a double sliding movement. vertical and rotating along a ring surrounding the table 10.

Dans la forme d'exécution envisagée, le film 7 a une laize qui est une fraction de la distance entre les deux faces d'extrémités 3 et 4 tout en étant au moins égale ou de l'ordre de la dimension transversale de la face d'extrémité 3 à recouvrir. On entend ici par dimension transversale la dimension de la face 3 comptée orthogonalement à un second axe dont il est question ci-après.In the embodiment envisaged, the film 7 has a width which is a fraction of the distance between the two end faces 3 and 4 while being at least equal to or of the order of the transverse dimension of the face d end 3 to be covered. The term “transverse dimension” is understood here to mean the dimension of the face 3 counted orthogonally to a second axis which is discussed below.

Dans cette forme d'exécution, le film mis en oeuvre est plus spécialement un film étirable qui est étiré avant que d'être appliqué sur la charge grâce à un dispositif de pré-étirage (non représenté) porté par le chariot 16. Ce dispositif de pré-étirage peut comporter un ou plusieurs rouleaux sur lesquels passe le film 7 de manière que le film soit dévidé en aval à une vitesse plus grande que la vitesse en amont.In this embodiment, the film used is more especially a stretch film which is stretched before than being applied to the load by means of a pre-stretching device (not shown) carried by the carriage 16. This pre-stretching device may include one or more rollers on which the film 7 passes so that the film is unwound downstream at a speed greater than the speed upstream.

Dans l'étape illustrée par la figure 1A, on associe une partie extrême initiale 18 de la bande de film 7 à la face latérale 2 de la charge au moyen par exemple d'une pince de maintien (non représentée) portée par ou au voisinage de la table 10. Cette association intervient au voisinage de la face horizontale inférieure 4. Dans cette situation et dans la forme d'exécution envisagée, l'axe 9 de la bobine de la film 8 est alors placé verticalement.In the step illustrated in FIG. 1A, an initial end portion 18 of the film strip 7 is associated with the lateral face 2 of the load by means, for example, of a holding clip (not shown) carried by or in the vicinity of the table 10. This association occurs in the vicinity of the lower horizontal face 4. In this situation and in the envisaged embodiment, the axis 9 of the film reel 8 is then placed vertically.

Puis la table 10, donc la charge palettisée 1 sont entraînées à pivotement autour des axes 5, 12 dans le sens des flèches R ce qui permet le banderolage, l'axe 9 de la bobine de film 8 restant vertical, le film 7 venant s'appliquer à plat et sur toute sa largeur sur la face latérale 2. S'agissant d'un banderolage hélicoïdal de la face latérale 2 avec le film 7, à spires venant à recouvrement, on fait coulisser la bobine de film 8 le long de son axe 9 vers le haut et la face horizontale supérieure 3 (flèche C). Dans cette situation, la bobine de film 8 est donc déplacée parallèlement au premier axe 12. Ce coulissement vertical ascendant de la bobine de film 8 est poursuivi jusqu'à ce que la bobine de film 8 se trouve au moins pour partie au-dessus du plan horizontal de la face supérieure 3. Dans cette situation, la bobine de film 8 est donc légèrement écartée de la face latérale 2 et de la face supérieure à recouvrir 3. De plus, le film 7 quitte alors la face latérale 2 au voisinage de la face supérieure à recouvrir 3.Then the table 10, therefore the palletized load 1 are pivotally driven around the axes 5, 12 in the direction of the arrows R which allows the wrapping, the axis 9 of the film reel 8 remaining vertical, the film 7 coming s '' apply flat and over its entire width on the lateral face 2. Being a helical wrapping of the lateral face 2 with the film 7, with turns coming into overlap, the film reel 8 is slid along its axis 9 upwards and the upper horizontal face 3 (arrow C). In this situation, the film reel 8 is therefore moved parallel to the first axis 12. This upward vertical sliding of the film reel 8 is continued until the film reel 8 is at least partially above the horizontal plane of the upper face 3. In this situation, the film reel 8 is therefore slightly separated from the side face 2 and from the upper face to be covered 3. In addition, the film 7 then leaves the side face 2 in the vicinity of the upper face to cover 3.

Le mouvement relatif de pivotement de l'axe 9 de la bobine de film 8 et de la charge 1 (en l'occurrence le pivotement de la charge) autour du premier axe 12 permet, progressivement, le dépôt de la bande de film 7 sur la face latérale 2.The relative pivoting movement of the axis 9 of the film reel 8 and of the load 1 (in this case the pivoting of the load) around the first axis 12 allows, gradually, the deposition of the film strip 7 on the side face 2.

On dépose sur la face d'extrémité 3 le même film 7 que celui, provenant de la bobine 8, destiné à l'emballage de la face latérale 2.The same film 7 as that, coming from the reel 8, intended for packaging the side face 2, is deposited on the end face 3.

A cet effet, on réalise lorsque la bande de film 7 est au voisinage de la face supérieure 3 au moins une passe dans laquelle on cesse tout d'abord le mouvement relatif de pivotement autour du premier axe 5, 12. On effectue un mouvement relatif de pivotement de l'ordre d'un quart ou de trois quarts de tour de l'axe 9 de la bobine de film 8 et de la charge autour d'un second axe 20 ayant une direction générale horizontale. On amène ainsi la bobine de film 8 depuis sa position antérieure ou elle est substantiellement verticale et parallèle à et proche de la face latérale 2 jusqu'à une position générale proche de et parallèle à la face d'extrémité supérieure 3 à recouvrir. L'axe 9 est alors placé horizontalement et substantiellement orthogonal au second axe 20 (figure 1B). Dans cette situation, on effectue au moins un mouvement relatif de coulissement de l'axe 9 de la bobine de film et de la charge 1 substantiellement le long du second axe 20. Ce mouvement de coulissement est réalisé sur une course de l'ordre (ou supérieure légèrement) à la dimension longitudinale de la face d'extrémité 3. Cette dimension longitudinale est comptée le long du second axe 20. Ce mouvement de coulissement a pour conséquence le recouvrement progressif de la face d'extrémité supérieure 3 à recouvrir avec le film 7 d'un côté de la face latérale ou côté opposé (figure 1C).To this end, when the film strip 7 is in the vicinity of the upper face 3, at least one pass is made in which the relative pivoting movement around the first axis 5, 12 is first stopped. Relative movement is carried out pivoting of the order of a quarter or three quarters of a turn of the axis 9 of the film reel 8 and of the load around a second axis 20 having a generally horizontal direction. The film reel 8 is thus brought from its anterior position or it is substantially vertical and parallel to and close to the lateral face 2 to a general position close to and parallel to the upper end face 3 to be covered. The axis 9 is then placed horizontally and substantially orthogonal to the second axis 20 (Figure 1B). In this situation, at least one relative movement of sliding of the axis 9 of the film reel and of the load 1 is carried out substantially along the second axis 20. This sliding movement is carried out on a stroke of the order ( or slightly higher) than the longitudinal dimension of the end face 3. This longitudinal dimension is counted along the second axis 20. This sliding movement results in progressive overlap of the upper end face 3 to be covered with the film 7 on one side of the side face or opposite side (FIG. 1C).

Puis (figure 1D) on effectue un mouvement relatif de pivotement de l'ordre d'un quart ou de trois quarts de tours de l'axe 9 de la bobine de film et de la charge 1 autour du second axe 20. Cela a pour effet de ramener la bobine de film dans une position substantiellement verticale, parallèle à et proche de la face latérale 2 de la charge 1. On peut alors recommencer le mouvement relatif de pivotement autour du premier axe 12.Then (FIG. 1D) a relative pivoting movement is carried out of the order of a quarter or three quarters of turns of the axis 9 of the film reel and of the load 1 around the second axis 20. This has the effect of bringing the film reel into a substantially vertical position, parallel to and close to the lateral face 2 of the load 1. It is then possible to start the relative pivoting movement around the first axis 12.

Le second axe 20 est sensiblement perpendiculaire au plan vertical médian de la machine rejoignant l'axe 12 et l'axe principal vertical du mât 13, ce qui permet d'éviter toute interférence gênante des parties de la machine (ou de la charge) entre elles.The second axis 20 is substantially perpendicular to the vertical median plane of the machine joining the axis 12 and the vertical main axis of the mast 13, which makes it possible to avoid any annoying interference between the parts of the machine (or of the load) between they.

Il résulte des étapes qui précèdent que le film 7 a été appliqué sur la face d'extrémité horizontale supérieure 3 à recouvrir.It follows from the above steps that the film 7 has been applied to the upper horizontal end face 3 to be covered.

Sur les figures 1E et 1F, sont illustrées une seconde passe permettant de recouvrir la face d'extrémité 3 avec la bande de film 7, celle-ci étant disposée selon plusieurs couches superposées. Selon la réalisation ces couches sont parallèles et/ou croisées.In FIGS. 1E and 1F, a second pass is illustrated making it possible to cover the end face 3 with the strip of film 7, the latter being arranged in several superposed layers. Depending on the embodiment, these layers are parallel and / or crossed.

On effectue alors un deuxième banderolage hélicoïdal descendant venant croiser le banderolage hélicoïdal ascendant préalablement réalisé sur la face latérale 2.A second descending helical wrapping then crosses the ascending helical wrapping previously produced on the lateral face 2.

Lorsque la bande de film 7 vient au voisinage de la face d'extrémité horizontale inférieure 4 jusqu'à être amenée dans une position similaire à celle représentée sur la figure 1A. Dans cette situation, la pince précédemment mentionneé préalablement ouverte vient récupérer le film 7. La bande de film 7 peut alors être coupée transversalement. Sa partie extrême terminale peut être solidarisée sur le film préalablement déposé ou sur la charge 1 elle-même.When the film strip 7 comes in the vicinity of the lower horizontal end face 4 until it is brought into a position similar to that shown in FIG. 1A. In this situation, the previously mentioned previously opened clamp collects the film 7. The film strip 7 can then be cut transversely. Its end end portion can be secured to the previously deposited film or to the load 1 itself.

Bien que la description ait été faite dans le cas d'une charge 1 montée à pivotement autour de l'axe 5, le procédé est également applicable dans le cas où la charge est fixe, l'axe 9 de la bobine de film 8 tournant autour de l'axe 5, la bobine de film 8 tournant elle-même autour de la charge 1.Although the description has been made in the case of a load 1 pivotally mounted around the axis 5, the method is also applicable in the case where the load is fixed, the axis 9 of the film reel 8 rotating around the axis 5, the film reel 8 itself rotating around the load 1.

Deux variantes de réalisation principales peuvent être envisagées en ce qui concerne le mouvement relatif de coulissement le long du second axe 20. Soit la charge 1 est déplacée à coulissement le long du second axe 20 alors que, simultanément, l'axe 9 de la bobine de film reste fixe (figures 1A à 1F). Soit, au contraire, la charge 1 reste fixe alors que, simultanément, l'axe 9 est déplacé à coulissement le long du second axe 20 (figure 2A et 2B).Two main variant embodiments can be envisaged with regard to the relative sliding movement along the second axis 20. Either the load 1 is displaced sliding along the second axis 20 while, simultaneously, the axis 9 of the coil of film remains fixed (Figures 1A to 1F). Or, on the contrary, the load 1 remains fixed while, simultaneously, the axis 9 is moved to slide along the second axis 20 (FIG. 2A and 2B).

La machine comprend également des seconds moyens pour assurer un mouvement relatif de pivotement de l'axe 9 de la bobine de film 8 et des moyens 10 support de la charge autour du second axe de pivotement 20. Ces seconds moyens sont agencés pour permettre à la bobine de film de se trouver soit en position verticale, soit en position horizontale.The machine also comprises second means for ensuring a relative pivoting movement of the axis 9 of the film reel 8 and means 10 for supporting the load around the second pivot axis 20. These second means are arranged to allow the film reel to be either in a vertical position or in a horizontal position.

La machine comprend aussi des troisièmes moyens pour assurer un mouvement relatif de coulissement de l'axe 9 de la bobine de film 8 et des moyens supports 10 de la charge 1 substantiellement le long du second axe 20 sur une certaine course.The machine also includes third means to ensure a relative sliding movement of the axis 9 of the film reel 8 and of the support means 10 of the load 1 substantially along the second axis 20 over a certain stroke.

La machine comprend également des moyens de commande agissant sur les premiers, seconds et troisièmes moyens pour assurer les deux mouvements relatifs de pivotement et le mouvement relatif de coulissement afin de coordonner leur fonctionnement de manière à permettre les étapes du procédé précédemment décrites.The machine also includes control means acting on the first, second and third means to ensure the two relative pivoting movements and the relative sliding movement in order to coordinate their operation so as to allow the steps of the method described above.

La machine comprend également des quatrièmes moyens pour assurer un mouvement relatif de coulissement de l'axe 9 de la bobine de film 8 et des moyens 10 support de la charge dans une direction générale parallèle au premier axe 12. Ces troisièmes moyens comprennent l'organe de coulissement 15. Les moyens de commande agissent alors également sur ces quatrièmes moyens de coulissement pour coordonner leur fonctionnement avec celui des premiers, seconds et troisièmes moyens de pivotement et coulissement relatif.The machine also comprises fourth means for ensuring a relative sliding movement of the axis 9 of the film reel 8 and means 10 for supporting the load in a general direction parallel to the first axis 12. These third means comprise the member sliding 15. The control means then also act on these fourth sliding means to coordinate their operation with that of the first, second and third means of pivoting and relative sliding.

La machine comprend en outre des moyens de saisie d'une partie extrême libre initiale 18 de bande de film 7 tels qu'une pince située au voisinage de la table support 10 ; des moyens de solidarisation d'une partie extrême terminale de cette bande de film sur du film déjà déposé sur la charge ou sur la charge elle-même ainsi que des moyens de coupe transversale de la bande de film. Ces différents moyens peuvent être portés par la même pince.The machine further comprises means for gripping an initial free end portion 18 of film strip 7 such as a clamp located in the vicinity of the support table 10; means for securing an end end portion of this strip of film on film already deposited on the load or on the load itself as well as means for cross-cutting the film strip. These different means can be carried by the same clamp.

Les seconds moyens assurent le blocage relatif de l'axe 9 dans au moins deux positions de fonctionnement séparées angulairement l'une de l'autre d'environ un quart ou trois quarts de tour.The second means ensure the relative locking of the axis 9 in at least two operating positions angularly separated from each other by about a quarter or three quarters of a turn.

Lorsque la machine met en oeuvre du film étirable, elle comporte des moyens d'étirage ou de pré-étirage de la bande de film qui peuvent également être actifs lors du recouvrement de la face supérieure 3.When the machine uses stretch film, it includes means for stretching or pre-stretching the film strip which can also be active during the covering of the upper face 3.

Les seconds moyens relatifs de pivotement peuvent inclure un chariot en deux parties à savoir une partie 16a associée directement au mât 3 et agencée pour pouvoir coulisser sur celui-ci et une partie 16b montée sur la partie 16a constituant ou supportant le tourillon de la bobine de film 8 et, le cas échéant les moyens d'étirage ou de pré-étirage. Ces deux parties 16a, 16b sont reliées l'une à l'autre par un axe de pivotement coaxial à l'axe 20. Des organes moteur tels que moteur, motoréducteur, engrenage, courroies crantées ou équivalents portés plus spécialement par la partie 16a permettent d'assurer le pivotement relatif de la partie 16b par rapport à la partie 16a autour de l'axe 20.The second relative pivoting means may include a carriage in two parts, namely a part 16a associated directly with the mast 3 and arranged to be able to slide thereon and a part 16b mounted on the part 16a constituting or supporting the pin of the reel of film 8 and, where appropriate, the stretching or pre-stretching means. These two parts 16a, 16b are connected to each other by a pivot axis coaxial with the axis 20. Motor organs such as motor, gearmotor, gear, toothed belts or the like more particularly carried by the part 16a allow to ensure the relative pivoting of the part 16b relative to the part 16a around the axis 20.

Dans la réalisation des figures 1A à 1F, les troisièmes moyens de coulissement relatif le long du second axe 20 agissent et sont associés à la table support 10 ou, éventuellement à des éléments supports de charge associés à la table 10. Par exemple la table 10 est une table à rouleaux blocables. Il lui est associé un convoyeur également à rouleaux blocables, coplanaire. Des moyens d'entraînement assurent l'entraînement ou respectivement le blocage de la table et du convoyeur ainsi que le pivotement ou respectivement le blocage en rotation de la table 10. En particulier, il est prévu une position dans laquelle le convoyeur prolonge la table, les rouleaux étant tous d'axes parallèles. Dans cette situation l'entraînement positif des rouleaux, de la table et du convoyeur permet de faire passer la charge 1 à laquelle est associé du film 7 de la table 10 au convoyeur, ce qui correspond à la course de coulissement considérée, la table et le convoyeur s'étendant parallèlement le long de l'axe 20. Dans cette réalisation, la bobine de film 8 est montée à coulissement vertical sur le mât 13 et à pivotement autour de l'axe 20 mais non à coulissement le long de l'axe 20. Selon une autre réalisation possible, la table 10 est arrêtée avec ses rouleaux s'étendant parallèlement (et non orthogonalement) à l'axe 20 et il est prévu sous la table 10 un moyen élevateur et coulissant horizontalement pouvant passer entre les rouleaux entre une position inférieure escamotée et une position supérieure à l'aplomb de la table 10 (position proximale) et une position supérieure écartée de la table 1 (position distale).In the embodiment of FIGS. 1A to 1F, the third relative sliding means along the second axis 20 act and are associated with the support table 10 or, possibly with load support elements associated with the table 10. For example the table 10 is a lockable roller table. It is associated with a conveyor also with lockable rollers, coplanar. Drive means ensure the driving or respectively the blocking of the table and the conveyor as well as the pivoting or respectively the blocking in rotation of the table 10. In particular, a position is provided in which the conveyor extends the table, the rollers being all of axes parallel. In this situation the positive drive of the rollers, of the table and of the conveyor makes it possible to pass the load 1 with which is associated film 7 of the table 10 to the conveyor, which corresponds to the sliding stroke considered, the table and the conveyor extending parallel along the axis 20. In this embodiment, the film reel 8 is mounted to slide vertically on the mast 13 and to pivot around the axis 20 but not to slide along the axis 20. According to another possible embodiment, the table 10 is stopped with its rollers extending parallel (and not orthogonally) to the axis 20 and there is provided under the table 10 a lifting and horizontally sliding means which can pass between the rollers between a lowered retracted position and a higher position above the table 10 (proximal position) and an upper position away from the table 1 (distal position).

Dans la réalisation des figures 2A et 2B, les troisièmes moyens de coulissement sont associés au chariot 16. A cet effet, la partie 16a est elle-même, en deux parties, à savoir une partie 16c montée directement sur le mât 13 à coulissement vertical et ayant une force de coulisse s'étendant le long de l'axe 20 et une partie 16d montée coulissante sur la coulisse 16c, grâce à des moyens d'entraînement appropriés (même sans fin, motoréducteur, galets , chaîne d'entraînement). La partie 16b est montée sur la partie 16d. Dans cette variante la table 10 est conventionnelle, c'est-à-dire qu'elle n'est pas spécialement agencée pour un coulissement de la charge 1 lors du procédé de banderolage.In the embodiment of FIGS. 2A and 2B, the third sliding means are associated with the carriage 16. For this purpose, the part 16a is itself, in two parts, namely a part 16c mounted directly on the mast 13 with vertical sliding and having a sliding force extending along the axis 20 and a part 16d slidingly mounted on the slide 16c, by means of suitable drive means (even endless, gearmotor, rollers, drive chain). Part 16b is mounted on part 16d. In this variant the table 10 is conventional, that is to say that it is not specially arranged for sliding of the load 1 during the wrapping process.

Claims (26)

Procédé d'emballage d'une charge palettisée limitée par une face latérale verticale fermée sur elle-même et deux faces d'extrémité supérieure et inférieure, au moyen de film en matière plastique dans lequel : - on associe une partie extrême initiale d'une bande de film provenant d'une bobine de film à la face latérale de la charge ; - on effectue un mouvement relatif de pivotement de l'axe de la bobine de film et de la charge autour d'un premier axe substantiellement confondu avec l'axe vertical de la charge et ayant une direction générale verticale et par suite de ce mouvement on dépose progressivement la bande de film sur cette face latérale ; - on dépose du film sur la face d'extrémité supérieure à recouvrir ; - on coupe transversalement la bande de film et on solidarise la partie extrême terminale de celle-ci au film déposé ou à la charge,
   caractérisé en ce qu'on dépose sur la face d'extrémité supérieure à recouvrir du film provenant de la bobine de film et, à cet effet, on réalise, lorsque la bande de film est au voisinage de la face d'extrémité supérieure au moins une passe dans laquelle : - On cesse le mouvement relatif de pivotement autour du premier axe ; - on effectue un mouvement relatif de pivotement de l'ordre d'un quart ou de trois quarts de tours de l'axe de la bobine de film et de la charge autour d'un second axe ayant une direction générale horizontale et on amène ainsi la bobine de film depuis une position substantiellement verticale et parallèle à et proche de la face latérale de la charge jusqu'à une position générale proche de et parallèle à la face d'extrémité supérieure à recouvrir, l'axe de la bobine de film étant alors substantiellement orthogonal au second axe ; - dans cette situation, on effectue au moins un mouvement relatif de coulissement de l'axe de la bobine de film et de la charge substantiellement le long du second axe sur une course de l'ordre de la dimension longitudinale de la face d'extrémité supérieure de la charge comptée le long du second axe jusqu'à la recouvrir avec le film. - puis on effectue un mouvement relatif de pivotement de l'ordre d'un quart ou de trois quarts de tour de l'axe de la bobine de film et de la charge autour du second axe jusqu'à amener la bobine de film dans une position substantiellement parallèle à et proche de la face latérale de la charge. - on recommence le mouvement relatif de pivotement autour du premier axe. Method of packaging a palletized load limited by a vertical lateral face closed on itself and two upper and lower end faces, by means of plastic film in which: - An initial end portion of a film strip from a film reel is associated with the lateral face of the load; - a relative pivoting movement of the axis of the film reel and of the load is carried out around a first axis substantially coincident with the vertical axis of the load and having a general vertical direction and, as a result of this movement, gradually depositing the film strip on this lateral face; - film is deposited on the upper end face to be covered; the film strip is cut transversely and the end end portion thereof is secured to the film deposited or to the load,
characterized in that the film from the film reel is deposited on the upper end face to be covered and, to this end, at least at least one part of the film end is produced in the vicinity of the upper end face a pass in which: - We stop the relative pivoting movement around the first axis; - a relative pivoting movement of the order of a quarter or three-quarter turns of the axis of the film reel and of the load is carried out around a second axis having a generally horizontal direction and thus the film reel from a substantially vertical position parallel to and close to the side face of the load to a general position close to and parallel to the upper end face to be covered, the axis of the film reel being then substantially orthogonal to the second axis; - in this situation, at least one relative sliding movement of the axis of the film reel and of the load is carried out substantially along the second axis over a stroke of the order of the longitudinal dimension of the end face of the charge counted along the second axis until covering it with the film. - then a relative pivoting movement is carried out of the order of a quarter or three quarters of a turn of the axis of the film reel and of the load around the second axis until the film reel is brought into a position substantially parallel to and close to the lateral face of the load. - the relative pivoting movement around the first axis is started again. Procédé selon la revendication 1, caractérisé en ce qu'on met en oeuvre une bande de film dont la laize est au moins égale ou de l'ordre de la dimension transversale de la face d'extrémité supérieure à recouvrir.Method according to claim 1, characterized in that a strip of film is used, the width of which is at least equal or of the order of the transverse dimension of the upper end face to be covered. Procédé selon l'une quelconque des revendications 1 et 2, caractérisé en ce que, pendant le dépôt de la bande de film sur la face latérale, on effectue un mouvement de coulissement relatif de l'axe de la bobine de film et de la charge dans une direction générale parallèle au premier axe.Method according to either of Claims 1 and 2, characterized in that, during the deposition of the film strip on the lateral face, a relative sliding movement is carried out of the axis of the film reel and of the load. in a general direction parallel to the first axis. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'on effectue le mouvement relatif de pivotement autour du second axe lorsque la bobine de film a été amenée dans une position générale écartée de la face latérale et de la face d'extrémité supérieure à recouvrir, et que la bande de film quitte la face latérale à l'endroit ou au voisinage de la face d'extrémité supérieure à recouvrir.Method according to any one of Claims 1 to 3, characterized in that the relative pivoting movement is carried out around the second axis when the film reel has been brought into a general position away from the side face and from the face d 'upper end to be covered, and that the film strip leaves the side face at the location or in the vicinity of the upper end face to be covered. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'on réalise plusieurs passes pour recouvrir la face d'extrémité supérieure à recouvrir de manière que la bande de film soit déposée selon plusieurs couches superposées, parallèles et/ou croisées.Method according to any one of Claims 1 to 4, characterized in that several passes are made to cover the upper end face to be covered so that the film strip is deposited in several superimposed, parallel and / or crossed layers . Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'on met en oeuvre une bande de film dont la laize est une fraction de la distance séparant les deux faces d'extrémité supérieure et inférieure de la charge.Method according to any one of Claims 1 to 5, characterized in that a strip of film is used, the width of which is a fraction of the distance separating the two upper and lower end faces of the load. Procédé selon la revendication 6, caractérisé en ce qu'on réalise au moins un banderolage hélicoïdal de la face latérale.Method according to claim 6, characterized in that at least one helical wrapping of the lateral face is produced. Procédé selon la revendication 7, caractérisé en ce qu'un banderolage hélicoïdal est à spires jointives ou à recouvrement.Method according to claim 7, characterized in what a helical wrapping is with contiguous turns or overlapping. Procédé selon la revendication 7, caractérisé en ce qu'on réalise le recouvrement de la face d'extrémité entre deux banderolages hélicoïdaux de sens opposés de la face latérale de la charge.Method according to claim 7, characterized in that the end face is covered between two helical wrapping in opposite directions from the side face of the load. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'on met en oeuvre une bande de film étirable.Process according to any one of Claims 1 to 9, characterized in that a strip of stretch film is used. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'on met en oeuvre une bande de film thermo-rétractable.Process according to any one of Claims 1 to 9, characterized in that a strip of heat-shrinkable film is used. Procédé selon la revendication 10, caractérisé en ce qu'on étire la bande de film entre la charge et la bobine de film ou par pré-étirage avant son application sur la charge.Method according to claim 10, characterized in that the film strip is stretched between the load and the film reel or by pre-stretching before its application to the load. Procédé selon les revendications 10 et 12, caractérisé en ce qu'on étire la bande de film également lors du recouvrement d'une face d'extrémité à recouvrir.Method according to claims 10 and 12, characterized in that the film strip is also stretched when covering an end face to be covered. Procédé selon l'une quelconque des revendications 1 à 13, caractérisé en ce que la charge est entraînée à pivotement autour de son axe vertical confondu avec le premier axe, l'axe de la bobine de film étant déplacé à pivotement autour d'un second axe écarté de la charge.Method according to any one of Claims 1 to 13, characterized in that the load is pivotally driven about its vertical axis coincident with the first axis, the axis of the film reel being pivotally displaced around a second axis away from the load. Procédé selon l'une quelconque des revendications 1 à 13, caractérisé en ce que la charge est fixe, l'axe de la bobine de film étant entraîné à pivotement autour de l'axe vertical de la charge confondu avec le premier axe, et déplacé à pivotement autour d'un second axe écarté de la charge.Method according to any one of Claims 1 to 13, characterized in that the charge is fixed, the axis of the film reel being driven to pivot about the vertical axis of the load coincident with the first axis, and moved to pivot around a second axis away from the load. Procédé selon l'une quelconque des revendications 1 à 15, caractérisé en ce qu'on assure le mouvement de coulissement relatif de l'axe de la bobine de film et de la charge le long du second axe par déplacement à coulissement de la charge.Method according to any one of Claims 1 to 15, characterized in that the relative sliding movement of the axis of the film reel and of the load is ensured along the second axis by sliding movement of the load. Procédé selon l'une quelconque des revendications 1 à 15, caractérisé en ce qu'on assure le mouvement de coulissement relatif de l'axe de la bobine de film et de la charge le long du second axe par déplacement à coulissement de l'axe de la bobine de film.Method according to any one of Claims 1 to 15, characterized in that the relative sliding movement of the axis of the film reel and of the load along the second axis are ensured by sliding movement of the axis of the film reel. Machine d'emballage d'une charge au moyen de film en matière plastique, comprenant : - des moyens support de la charge ; - des moyens support d'une bobine de bande de film ; - des premiers moyens pour assurer un mouvement relatif de pivotement de l'axe de la bobine de film et des moyens support de la charge autour d'un premier axe ayant une direction générale parallèle à l'axe de la bobine de film, caractérisée par le fait qu'elle comprend également : - des seconds moyens pour assurer un mouvement relatif de pivotement de l'axe de la bobine de film et des moyens support de la charge autour d'un second axe ayant une direction générale orthogonale au premier axe de pivotement et à l'axe de la bobine de film entre au moins deux positions de fonctionnement écarté de l'axe d'un quart ou de trois quarts de tours et assurer un blocage relatif dans ces deux positions ; - des troisièmes moyens pour assurer un mouvement relatif de coulissement de l'axe de la bobine de film et des moyens support de la charge substantiellement le long du second axe, sur une certaine course ; - et des moyens de commande agissant sur les premiers, seconds et troisièmes moyens pour assurer les deux mouvements relatifs de pivotement et le mouvement relatif de coulissement, afin de coordonner leur fonctionnement. Machine for packaging a load using plastic film, comprising: - load support means; - means for supporting a reel of film strip; - first means for ensuring a relative pivoting movement of the axis of the film reel and means for supporting the load around a first axis having a general direction parallel to the axis of the film reel, characterized by the fact that it also includes: - second means for ensuring a relative pivoting movement of the axis of the film reel and means for supporting the load around a second axis having a general direction orthogonal to the first pivot axis and to the axis of the film reel between at least two operating positions spaced from the axis by a quarter or three quarter turns and ensuring relative locking in these two positions ; - third means for ensuring a relative sliding movement of the axis of the film reel and means for supporting the load substantially along the second axis, over a certain stroke; - And control means acting on the first, second and third means to ensure the two relative pivoting movements and the relative sliding movement, in order to coordinate their operation. Machine selon la revendication 18, caractérisée en ce qu'elle comprend, en outre, des quatrièmes moyens pour assurer un mouvement relatif de coulissement de l'axe de la bobine de film et des moyens support de la charge dans une direction générale parallèle au premier axe ; les moyens de commande agissant aussi sur les quatrièmes moyens de coulissement pour coordonner leur fonctionnement avec celui des premiers, seconds et troisièmes moyens de pivotement et coulissement relatif.Machine according to claim 18, characterized in that it further comprises fourth means for ensuring a relative sliding movement of the axis of the film reel and means for supporting the load in a general direction parallel to the first axis; the control means also acting on the fourth sliding means to coordinate their operation with that of the first, second and third pivoting and relative sliding means. Machine selon l'une quelconque des revendications 18 et 19, caractérisée en ce qu'elle comprend, en outre, des moyens de saisie d'une partie extrême initiale de bande de film; des moyens de solidarisation d'une partie extrême terminale de bande de film sur du film déposé ou la charge; et des moyens de coupe transversale de la bande de film.Machine according to any one of claims 18 and 19, characterized in that it further comprises means for gripping an initial end portion of the film strip; means for securing an end end portion of film strip to the deposited film or the load; and means for cross-cutting the film strip. Machine selon l'une quelconque des revendications 18 à 20, caractérisée en ce qu'elle comporte des moyens d'étirage ou de pré-étirage de la bande de film.Machine according to any one of claims 18 to 20, characterized in that it comprises means for stretching or pre-stretching the film strip. Machine selon l'une quelconque des revendications 18 à 21, caractérisée en ce que les moyens support de la charge comprenant une table de direction générale horizontale; les moyens support d'une bobine de film comprennent au moins un mât de direction générale verticale et un chariot support de bobine de film porté directement ou indirectement par le mât, monté à coulissement vertical et à pivotement autour du second axe.Machine according to any one of claims 18 to 21, characterized in that the load support means comprising a generally horizontal steering table; the means for supporting a film reel comprise at least one mast of general vertical direction and a film reel support carriage carried directly or indirectly by the mast, mounted to slide vertically and pivot about the second axis. Machine selon la revendication 22, caractérisée en ce que la table est montée pour pivoter autour d'un axe de direction générale verticale et le mât est fixe.Machine according to claim 22, characterized in that the table is mounted to pivot about an axis of generally vertical direction and the mast is fixed. Machine selon la revendication 22, caractérisée en ce que la table est fixe et le chariot est agencé pour décrire un double mouvement de coulissement vertical et de rotation le long d'un anneau entourant la table.Machine according to claim 22, characterized in that the table is fixed and the carriage is arranged to describe a double movement of vertical sliding and rotation along a ring surrounding the table. Machine selon les revendications 18 à 24, caractérisée en ce que la table support de charge ou des éléments supports de charge associés à la table sont montés à coulissement le long du second axe sur une certaine course entre une position proximale ou la table peut pivoter autour du premier axe et une position distale.Machine according to claims 18 to 24, characterized in that the load support table or load support elements associated with the table are slidably mounted along the second axis over a certain distance between a proximal position or the table can pivot around of the first axis and a distal position. Machine selon les revendications 18 à 24, caractérisée en ce que les moyens supports de la bobine du film ou des éléments supports de la bobine associés à ces moyens sont montés à coulissement le long du second axe sur une certaine course entre une position proximale et une position distale.Machine according to Claims 18 to 24, characterized in that the support means for the film reel or the support elements for the reel associated with these means are slidably mounted along the second axis over a certain distance between a proximal position and a distal position.
EP92401863A 1991-07-11 1992-06-30 Method and device for packaging the lateral sides and the top part of a palettized load Expired - Lifetime EP0522928B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9108766A FR2678896B1 (en) 1991-07-11 1991-07-11 METHOD AND MACHINE FOR PACKING THE VERTICAL AND TOP END SIDE FACES OF A PALLETIZED LOAD.
FR9108766 1991-07-11

Publications (2)

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EP0522928A1 true EP0522928A1 (en) 1993-01-13
EP0522928B1 EP0522928B1 (en) 1995-10-25

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Application Number Title Priority Date Filing Date
EP92401863A Expired - Lifetime EP0522928B1 (en) 1991-07-11 1992-06-30 Method and device for packaging the lateral sides and the top part of a palettized load

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US (1) US5195301A (en)
EP (1) EP0522928B1 (en)
AT (1) ATE129470T1 (en)
CA (1) CA2073667C (en)
DE (1) DE69205633T2 (en)
DK (1) DK0522928T3 (en)
ES (1) ES2079154T3 (en)
FR (1) FR2678896B1 (en)
GR (1) GR3018756T3 (en)

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FR2847554A1 (en) 2002-11-25 2004-05-28 Thimon BANDEROLING PACKAGING MACHINE USING A PLASTIC FILM

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US5628167A (en) * 1995-07-13 1997-05-13 Illinois Tool Works Inc. Method and apparatus for wrapping elongate load having generally circular or generally annular ends
US5545505A (en) * 1995-09-19 1996-08-13 Minnesota Mining And Manufacturing Company Amine compounds as contrast enhancers for black-and-white photothermographic and thermographic elements
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WO2001070576A1 (en) * 2000-03-23 2001-09-27 Mas, Construcciones Mecanicas, S.A. Wrapping method and machine for implementing said method
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AUPR063700A0 (en) * 2000-10-09 2000-11-02 Safetech Pty Ltd A method and apparatus for wrapping a load
US7568327B2 (en) * 2003-01-31 2009-08-04 Lantech.Com, Llc Method and apparatus for securing a load to a pallet with a roped film web
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FR2872487B1 (en) * 2004-07-02 2007-02-09 Finzy Sylvie SIMULTANEOUS BANDERING DEVICE OF THE SIDE FACES AND A FACE OF END OF A PALLETIZED LOAD
CA2601562A1 (en) * 2004-11-03 2006-08-17 Cousins Packaging Inc. Stretch wrap machine with top corner film transfer
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US7707801B2 (en) 2005-04-08 2010-05-04 Lantech.Com, Llc Method for dispensing a predetermined amount of film relative to load girth
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EP2336034B1 (en) * 2009-12-21 2013-01-09 MSK - Verpackungs-Systeme GmbH Method and device for wrapping a stack of goods with a film
US9493262B2 (en) 2010-10-29 2016-11-15 Lantech.Com, Llc Machine generated wrap data
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US9932137B2 (en) 2012-10-25 2018-04-03 Lantech.Com, Llc Corner geometry-based wrapping
EP2917114B1 (en) 2012-10-25 2019-12-25 Lantech.Com, Llc Effective circumference-based wrapping
US10239645B2 (en) 2013-02-13 2019-03-26 Lantech.Com, Llc Packaging material profiling for containment force-based wrapping
US9896229B1 (en) 2013-08-29 2018-02-20 Top Tier, Llc Stretch wrapping apparatus and method
AU2015206566B2 (en) 2014-01-14 2018-05-17 Lantech.Com, Llc Dynamic adjustment of wrap force parameter responsive to monitored wrap force and/or for film break reduction
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US11518557B2 (en) 2019-09-19 2022-12-06 Lantech.Com, Llc Packaging material grading and/or factory profiles
JP2021084648A (en) * 2019-11-27 2021-06-03 司化成工業株式会社 Stretch wrapping machine
CN112027155A (en) * 2020-09-04 2020-12-04 杨洪远 Film packaging machine
CN112298644A (en) * 2020-10-11 2021-02-02 苏州青众创业服务有限公司 Automatic packaging machine for machining
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2847554A1 (en) 2002-11-25 2004-05-28 Thimon BANDEROLING PACKAGING MACHINE USING A PLASTIC FILM

Also Published As

Publication number Publication date
ATE129470T1 (en) 1995-11-15
CA2073667C (en) 1996-06-18
FR2678896B1 (en) 1994-02-25
US5195301A (en) 1993-03-23
CA2073667A1 (en) 1993-01-12
GR3018756T3 (en) 1996-04-30
DK0522928T3 (en) 1996-02-12
DE69205633D1 (en) 1995-11-30
EP0522928B1 (en) 1995-10-25
FR2678896A1 (en) 1993-01-15
DE69205633T2 (en) 1996-04-04
ES2079154T3 (en) 1996-01-01

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