EP1422143B1 - Apparatus for wrapping a load by means of a plastic foil - Google Patents
Apparatus for wrapping a load by means of a plastic foil Download PDFInfo
- Publication number
- EP1422143B1 EP1422143B1 EP20030354085 EP03354085A EP1422143B1 EP 1422143 B1 EP1422143 B1 EP 1422143B1 EP 20030354085 EP20030354085 EP 20030354085 EP 03354085 A EP03354085 A EP 03354085A EP 1422143 B1 EP1422143 B1 EP 1422143B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- load
- machine according
- packaging machine
- reel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004033 plastic Substances 0.000 title description 2
- 229920003023 plastic Polymers 0.000 title description 2
- 239000011888 foil Substances 0.000 title 1
- 238000004806 packaging method and process Methods 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 7
- 229920002457 flexible plastic Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920006257 Heat-shrinkable film Polymers 0.000 description 3
- 229920006302 stretch film Polymers 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- 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
- a wrapping machine by wrapping a palletized load of parallelepiped shape is known from the document EP-A-0 467 729 in which the same film is used to obtain a total overlap of the four planes of the lateral face, and the upper horizontal face.
- the film storage spool is rotated to the horizontal position at the beginning of the wrapping cycle, when the upper face is covered, and at the end of the cycle to perform the weld.
- the coil is actuated on the other hand to pivot to the vertical position to perform the wrapping of the side face. Stop means are necessary to ensure a positive locking of the axis of the coil in the two operating positions. At this double orthogonal pivoting of the coil, is added in addition to a vertical sliding movement by means of a movable carriage on which is mounted the coil.
- the document EP-A-0 522 928 discloses a wrapping wrapping machine, wherein the bobbin supporting means comprises a vertical mast and a movable carriage mounted to vertically slide and pivot about an axis.
- the reel thus describes a double movement of sliding and rotation along a ring surrounding the table.
- the document US-A-4,409,776 relates to a packaging machine by wrapping a palletized load with a film having a tacky side.
- a first layer of the film is applied to the load, the non-tacky side facing the load.
- a reversal of 180 ° of the coil orients the sticky side of the film on the coil facing the sticky face of the first layer of the film wrapped on the load.
- the wrapping of the second layer ensures the adhesion of the two layers of film.
- the document US 5,140,798 discloses a wrapping machine according to the preamble of claim 1.
- the spool extends vertically, with the pivoting guide device directly receiving the film from the spool.
- the stretch film used has a tacky side to obtain good cohesion by superimposing the layers.
- Such a device can cause an uncontrolled conformation of the film between the coil and the application device, the film guidance not being positively controlled during the pivoting of the application device. This results in a high risk of sticking the film on itself during the pivoting movement of the application device.
- the object of the invention is to overcome the aforementioned drawbacks, and to achieve a packaging machine by wrapping, to increase the rates by the use of a large film reel, regardless of the layout of the coil, and accurately apply the film flat on top of the load with a minimum of pleating to ensure a good seal.
- the packaging machine according to the invention is characterized in that the multidirectional guiding device forms an assembly comprising a pair of guide rollers between which the film passes, and an inclined deflection device.
- this multidirectional guiding device makes it possible to use the same film without discontinuity for covering the lateral face and the upper face of the load, always keeping the reel in the same direction, without tilting movement.
- the film storage reel and the multidirectional guiding device are mounted on a movable carriage constituting said translational movement means.
- the multidirectional guidance system comprises for example a pair of non-motorized rollers between which the film passes.
- the film storage coil can also be fixed extending horizontally or vertically in the vicinity of the ground.
- the film is then brought to the multidirectional guidance via an accumulator device placed before the return device.
- the film can be wound on the reel in a pre-stretched state. It is also possible to make use of a pre-stretching device for the film disposed at the exit of the reel, and comprising a pair of motorized rollers making it possible to reel the film downstream at a speed greater than that upstream. .
- the stretched film flow rate is advantageously controlled by speed and / or force measuring means for controlling the application force of the film on the load.
- the pre-stretching device of the film is associated with the multidirectional guidance system.
- the load packaged by wrapping on the tray then passes into a retraction station containing heating means for effecting heat shrinkage of the film on the load.
- a machine for packaging a palletized CH load comprises a reel 11 for storing a flexible film 12, a rotating plate 13 serving to support the load CH of parallelepiped shape, means for actuating 14 in rotation of the plate 13, and means of orientation of the film 12 to cover by wrapping the side face 16 and the upper horizontal surface 17 of the charge CH.
- the lateral face 16 of the load CH comprises four planes 16a, 16b, 16c, 16d disposed in vertical planes parallel in pairs, and defining at the four corners of the vertical ridges 19 parallel to the axis of rotation 20 of the load CH.
- the film 12 used is a width of stretchable or heat-shrinkable plastic material, especially polyethylene, said width being wound on the coil 11 along a horizontal axis orthogonal to the axis of rotation 20 of the load CH.
- the width of the width may be between 500mm and 1500mm, while the height of the load CH is generally greater than said width.
- pre-stretching takes place before it is deposited on the load CH, for example by means of a film directly wound in the pre-stretched state (in the case of the example illustrated in FIG. 1).
- the orientation means of the film 12 after unwinding of the coil 11, are constituted according to the invention by a multidirectional guidance system comprising a pair of guide rollers 21 between which the film passes, and a return device 28 to 45 °, the assembly being interposed between the coil 11 and the rotating plate 13, and mounted to tilt about a horizontal axis 22 so as to occupy either a horizontal position or a vertical position.
- the return device 28 at 45 ° is interposed between the coil 11 and the two guide rollers 21 so as to position the width of film 12 parallel to the side surface 16 of the load CH.
- the spool 11, the deflector 28 and the pair of guide rollers 21 are carried by a movable carriage CM capable of moving in the vertical direction between a low position (FIGS. 2 and 3) and an extreme high position (FIG. ).
- the vertical stroke of the CM carriage between the two extreme positions is adjustable according to the height of the load CH.
- the rotating plate 13 comprises a retaining clip 23 adapted to retain an end portion of the film 12 deposited at the base of the load CH, said clip being able to be equipped in addition to means for welding and cutting the film to ensure operation automatic production line.
- FIGS. 2 to 12 The successive steps of operation of the packaging machine 10 according to the invention are illustrated in FIGS. 2 to 12, the same film being used both for the seamless covering of the upper face 17 and the lateral face 16. of the charge CH:
- the charge CH is deposited on the plate 13, which is rotated in the direction of arrow F1 by the actuating means 14, constituted by way of example by a geared motor.
- the end of the film 12 is held during the rotational movement of the load CH by the retaining clip 23 in the closed state.
- the support carriage CM of the deflection device 28 and the guide rollers 21 is placed in the lowered position, so as to start the wrapping of the side face 16 from the base of the load CH.
- the guide rollers 21 and the deflection device 28 are rotated a quarter of a turn in the direction of the arrow F2 towards the horizontal position, allowing the start of flat winding of the film 12 over a reduced width of the different planes 16b , 16c, 16d.
- an upward movement of the carriage CM drives the guide rollers 21 and the return device 28 upward allowing the film to be deposited on the faces 16a, 16b without trapping the retaining clip 23.
- a movement is then made. descending the carriage so as to cover the reduced width of the film, allowing the opening of the clamp 23.
- the guide rollers 21 and the deflection device 28 remain in a horizontal position during this first step.
- the guide rollers 21 and the deflection device 28 are tilted towards the vertical position (arrow F3) in order to position the film 12 parallel to the lateral face 16 before it is deposited on the load CH.
- the CM trolley slide towards the high position (arrow F4), until the guide rollers 21 slightly exceed the horizontal plane of the upper face 17 of the load CH.
- the film 12 envelops the whole of the lateral surface 16 of the load CH following the rotation of the plate 13 in the direction of the arrow F1.
- the guide rollers 21 and the deflection device 28 pivot towards the horizontal position (arrow F5) with a raising and lowering movement of the carriage CM intended to apply the film 12 to cover a part of the upper face 17.
- the load CH rotates continuously with or without variation of speed.
- Figure 9 shows the wrapping operation of the planes of the side face 16, by sliding the carriage CM to the low position, the guide rollers 21 and the deflection device 28 remaining held in the vertical position.
- the tilting of the guide rollers 21 and the deflection device 28 to the horizontal position provides a pleating of the width at a predetermined height of the base, for example between 3 cm and 20 cm.
- the open clip 23 recovers this folded part of the film during the continued rotation of the load CH on the plate 13.
- On the plate 13 can be mounted a handling table equipped with motorized running gear, transmission chains or a conveyor belt to automatically route the packaged CH load from an upstream station or evacuate to a downstream station.
- the reel 11 for storing the film 12 is fixed while being arranged at a horizontal axis at ground level.
- a pre-stretching device 24 of the film making it possible to pre-stretch the film coming from the reel 11 before passing it through an accumulator device 25.
- the pre-stretching device 24 of a well known type comprises rollers 26 between which the film 12 passes, the rollers 26 being driven at different circumferential speeds by a geared motor mechanism 27 associated with a pair of gears 29, 30 of different diameters.
- the accumulator device 25 comprises a series of rollers spaced at various levels to store a certain length of pre-stretched film 12, allowing vertical movement of the carriage CM regardless of the height of the load CH.
- the return device 28 at 45 ° is interposed between the accumulator device 25 and the two guide rollers 21 so as to position the width of the film 12 parallel to the lateral surface 16 of the load CH.
- the two devices 25, 28 accumulator and return can move in vertical translation to perform a helical wrapping around the load CH.
- the spool 11 and the pre-stretching device 24 remain attached to the ground, or to a fixed frame.
- the pre-stretching device of the film can be mounted on the movable carriage CM of Figure 1, so as to move with the coil 11 between the low position and the high position.
- pre-stretching device in the multi-directional guide system of the film 12, for example by replacing the free rotating rollers 21 of FIG. 1 with motorized or non-motorized pre-stretching rollers, different speeds.
- the load wrapped by wrapping on the plate 13 then passes to a retraction station containing a hood or an oven for effecting heat shrinkage of the film on the load CH.
- the carriage CM can be driven in a rotational movement around the load CH after neutralization of the actuating means 14 making the plate 13 fixed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
Description
L'invention est relative à une machine d'emballage d'une charge au moyen d'un film en matière plastique souple, comprenant :
- un plateau tournant de support de la charge,
- des moyens support d'une bobine de stockage du film,
- des moyens d'actionnement en rotation du plateau,
- un dispositif de guidage multidirectionnel du film pour recouvrir sans discontinuité par banderolage la face latérale et la face horizontale supérieure de la charge, ledit dispositif étant intercalé entre la bobine et le plateau tournant, et comprenant des moyens de pivotement autour d'un axe de basculement entre une position horizontale et une position verticale, et des moyens de déplacement en translation entre une position abaissée et une position relevée, séparées l'une de l'autre par une course verticale ajustable en fonction de la hauteur de la charge.
- a turntable for supporting the load,
- support means for a film storage reel,
- means for actuating the plate in rotation,
- a device for multidirectional guidance of the film for continuously covering by wrapping the lateral face and the upper horizontal face of the load, said device being interposed between the spool and the turntable, and comprising means for pivoting about a tilting axis between a horizontal position and a vertical position, and translational displacement means between a lowered position and a raised position, separated from each other by an adjustable vertical stroke as a function of the height of the load.
Une machine d'emballage par banderolage d'une charge palettisée de forme parallélépipédique est connue du document
Le document
Pour déposer un film d'emballage sur les plans verticaux de la face latérale, et sur la face supérieure d'une charge palettisée, on connaît également la technique de houssage avec du film étirable ou thermo-rétractable. Cette technique est plus difficile à mettre en oeuvre que celle du banderolage.In order to deposit a packaging film on the vertical planes of the lateral face, and on the upper face of a palletised load, the shading technique with stretch or heat-shrinkable film is also known. This technique is more difficult to implement than that of wrapping.
Le document
Le document
L'objet de l'invention consiste à remédier aux inconvénients précités, et à réaliser une machine d'emballage par banderolage, permettant d'augmenter les cadences par l'utilisation d'une bobine de film de grande capacité, indépendamment de la disposition de la bobine, et d'appliquer avec précision le film à plat sur le dessus de la charge avec un minimum de plissage pour garantir une bonne étanchéité.The object of the invention is to overcome the aforementioned drawbacks, and to achieve a packaging machine by wrapping, to increase the rates by the use of a large film reel, regardless of the layout of the coil, and accurately apply the film flat on top of the load with a minimum of pleating to ensure a good seal.
La machine d'emballage selon l'invention est caractérisée en ce que le dispositif de guidage multidirectionnel forme un ensemble regroupant un couple de rouleaux de guidage entre lesquels passe le film, et un dispositif de renvoi incliné.The packaging machine according to the invention is characterized in that the multidirectional guiding device forms an assembly comprising a pair of guide rollers between which the film passes, and an inclined deflection device.
La présence de ce dispositif de guidage multidirectionnel permet d'utiliser sans discontinuité le même film pour le recouvrement de la face latérale et de la face supérieure de la charge, en conservant toujours la bobine dans une même direction, sans mouvement de basculement.The presence of this multidirectional guiding device makes it possible to use the same film without discontinuity for covering the lateral face and the upper face of the load, always keeping the reel in the same direction, without tilting movement.
Selon un mode de réalisation préférentiel, la bobine de stockage du film et le dispositif de guidage multidirectionnel sont montés sur un chariot mobile constituant lesdits moyens de déplacement en translation. Le système de guidage multidirectionnel comporte à titre d'exemple un couple de rouleaux non motorisés entre lesquels passe le film.According to a preferred embodiment, the film storage reel and the multidirectional guiding device are mounted on a movable carriage constituting said translational movement means. The multidirectional guidance system comprises for example a pair of non-motorized rollers between which the film passes.
La bobine de stockage du film peut aussi être fixe en s'étendant horizontalement ou verticalement au voisinage du sol. Le film est alors amené au système de guidage multidirectionnel par l'intermédiaire d'un dispositif accumulateur placé avant le dispositif de renvoi.The film storage coil can also be fixed extending horizontally or vertically in the vicinity of the ground. The film is then brought to the multidirectional guidance via an accumulator device placed before the return device.
Dans le cas d'une machine mettant en oeuvre du film étirable, le film peut être bobiné sur la bobine dans un état pré-étiré. Il est aussi possible de faire usage d'un dispositif de pré-étirage du film disposé à la sortie de la bobine, et comportant un couple de rouleaux motorisés permettant de dévider le film vers l'aval à une vitesse plus grande que celle en amont. Le débit de film étiré est avantageusement asservi à des moyens de mesure de vitesse et/ou de force pour maîtriser la force d'application du film sur la charge.In the case of a machine employing stretch film, the film can be wound on the reel in a pre-stretched state. It is also possible to make use of a pre-stretching device for the film disposed at the exit of the reel, and comprising a pair of motorized rollers making it possible to reel the film downstream at a speed greater than that upstream. . The stretched film flow rate is advantageously controlled by speed and / or force measuring means for controlling the application force of the film on the load.
Selon une autre variante de réalisation, le dispositif de pré-étirage du film est associé au système de guidage multidirectionnel.According to another variant embodiment, the pre-stretching device of the film is associated with the multidirectional guidance system.
Dans le cas d'une machine mettant en oeuvre du film thermo-rétractable, la charge emballée par banderolage sur le plateau, passe ensuite dans un poste de rétraction renfermant des moyens de chauffage pour effectuer la thermorétraction du film sur la charge.In the case of a machine employing heat-shrinkable film, the load packaged by wrapping on the tray, then passes into a retraction station containing heating means for effecting heat shrinkage of the film on the load.
D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif, et représenté aux dessins annexés, dans lesquels:
- la figure 1 est une vue schématique en perspective d'une machine d'emballage par banderolage selon l'invention, la bobine pouvant se déplacer parallèlement à l'axe de rotation de la charge ;
- les figures 2 à 12 illustrent les étapes successives de fonctionnement de la machine d'emballage de la figure 1 ;
- la figure 13 montre une vue similaire de la figure 1, illustrant une variante de réalisation à bobine fixe et plateau tournant ;
- la figure 14 représente une vue partielle de la figure 13 dans la phase de recouvrement de la face horizontale supérieure de la charge.
- Figure 1 is a schematic perspective view of a packaging wrapping machine according to the invention, the coil being movable parallel to the axis of rotation of the load;
- Figures 2 to 12 illustrate the successive steps of operation of the packaging machine of Figure 1;
- Figure 13 shows a similar view of Figure 1, illustrating an alternative embodiment of fixed coil and turntable;
- Figure 14 shows a partial view of Figure 13 in the recovery phase of the upper horizontal face of the load.
En référence à la figure 1, une machine d'emballage d'une charge CH palettisée, comporte une bobine 11 de stockage d'un film 12 souple, un plateau 13 tournant servant de support à la charge CH de forme parallélépipédique, des moyens d'actionnement 14 en rotation du plateau 13, et des moyens d'orientation du film 12 pour recouvrir par banderolage la face latérale 16 et la surface horizontale 17 supérieure de la charge CH.With reference to FIG. 1, a machine for packaging a palletized CH load comprises a
La face latérale 16 de la charge CH comprend quatre plans 16a, 16b, 16c, 16d disposés dans des plans verticaux parallèles deux à deux, et délimitant aux quatre coins des arêtes 19 verticales parallèles à l'axe de rotation 20 de la charge CH.The
Le film 12 utilisé est une laize en matière plastique étirable ou thermo-rétractable, notamment en polyéthylène, ladite laize étant enroulée sur la bobine 11 selon un axe horizontal orthogonal à l'axe de rotation 20 de la charge CH. A titre d'exemple, la largeur de la laize peut être comprise entre 500mm et 1500mm , alors que la hauteur de la charge CH est généralement supérieure à ladite largeur.The
Dans le cas d'un film 12 étirable, le pré-étirage intervient avant sa dépose sur la charge CH, par exemple au moyen d'un film directement bobiné dans l'état pré-étiré (cas de l'exemple illustré à la figure 1).In the case of a
Il est aussi possible d'obtenir le pré-étirage par l'intermédiaire d'un couple de rouleaux motorisés ou non motorisés en sortie de la bobine 11, de manière que le film 12 soit dévidé en aval à une vitesse plus grande que la vitesse en amont (voir figure 13).It is also possible to obtain pre-stretching by means of a pair of motorized or non-motorized rollers at the outlet of the
Les moyens d'orientation du film 12 après dévidage de la bobine 11, sont constitués selon l'invention par un système de guidage 15 multidirectionnel regroupant un couple de rouleaux 21 de guidage entre lesquels passe le film, et un dispositif de renvoi 28 à 45°, l'ensemble étant intercalé entre la bobine 11 et le plateau 13 tournant, et monté à basculement autour d'un axe horizontal 22 de manière à occuper soit une position horizontale, soit une position verticale. Le dispositif de renvoi 28 à 45° est intercalé entre la bobine 11 et les deux rouleaux de guidage 21 de manière à positionner la laize de film 12 parallèlement à la surface latérale 16 de la charge CH.The orientation means of the
La bobine 11, le dispositif de renvoi 28 et le couple de rouleaux de guidage 21 sont portés par un chariot CM mobile susceptible de se déplacer dans la direction verticale entre une position basse (figures 2 et 3) et une position haute extrême (figure 5). La course verticale du chariot CM entre les deux positions extrêmes est ajustable en fonction de la hauteur de la charge CH.The
Le plateau 13 tournant comporte une pince de retenue 23 apte à retenir une partie d'extrémité du film 12 déposée à la base de la charge CH, ladite pince pouvant être équipée en plus de moyens de soudage et de coupe du film pour assurer un fonctionnement automatique d'une ligne de production.The rotating
Les étapes successives de fonctionnement de la machine d'emballage 10 selon l'invention, sont illustrées sur les figures 2 à 12, le même film étant utilisé à la fois pour le recouvrement sans discontinuité de la face supérieure 17 et de la face latérale 16 de la charge CH:The successive steps of operation of the packaging machine 10 according to the invention are illustrated in FIGS. 2 to 12, the same film being used both for the seamless covering of the
Dans la première étape de démarrage du cycle illustrée à la figure 2, la charge C H est déposée sur le plateau 13, lequel est entraîné en rotation dans le sens de la flèche F1 par les moyens d'actionnement 14, constitués à titre d'exemple par un motoréducteur. L'extrémité du film 12 est maintenue durant le mouvement de rotation de la charge CH par la pince de retenue 23 se trouvant à l'état fermé. Le chariot CM support du dispositif de renvoi 28 et des rouleaux de guidage 21 est placé dans la position abaissée, de manière à débuter le banderolage de la face latérale 16 à partir de la base de la charge CH. Les rouleaux de guidage 21 et le dispositif de renvoi 28 sont pivotés d'un quart de tour dans le sens de la flèche F2 vers la position horizontale, permettant le début d'enroulement à plat du film 12 sur une largeur réduite des différents plans 16b, 16c, 16d.In the first step of starting the cycle illustrated in FIG. 2, the charge CH is deposited on the
Dans la figure 3, un mouvement ascendant du chariot CM entraîne les rouleaux de guidage 21 et le dispositif de renvoi 28 vers le haut autorisant le dépôt du film sur les faces 16a, 16b sans emprisonner la pince de retenue 23. On effectue ensuite un mouvement descendant du chariot de manière à recouvrir la largeur réduite du film, permettant l'ouverture de la pince 23. Les rouleaux de guidage 21 et le dispositif de renvoi 28 restent en position horizontale pendant cette première étape.In FIG. 3, an upward movement of the carriage CM drives the
Dans la figure 4, les rouleaux de guidage 21 et le dispositif de renvoi 28 sont basculés vers la position verticale (flèche F3) pour positionner le film 12 parallèlement à la face latérale 16 avant sa dépose sur la charge CH. Le chariot C M coulisse vers la position haute (flèche F4), jusqu'à ce que les rouleaux de guidage 21 dépassent légèrement le plan horizontal de la face supérieure 17 de la charge CH. Durant ce mouvement de coulissement vertical du chariot CM, le film 12 enveloppe la totalité de la surface latérale 16 de la charge CH suite à la rotation du plateau 13 dans le sens de la flèche F1.In FIG. 4, the
En référence à la figure 5, les rouleaux de guidage 21 et le dispositif de renvoi 28 pivotent vers la position horizontale (flèche F5) avec un mouvement de montée et descente du chariot CM destiné à appliquer le film 12 en couverture d'une partie de la face supérieure 17.With reference to FIG. 5, the
Sur la figure 6, les rouleaux de guidage 21 et le dispositif de renvoi 28 pivotent en sens opposé vers la position verticale, alors que le chariot CM reste en position haute. Le film 12 est alors prêt pour être déposé parallèlement sur un des plans de la face latérale 16.In Figure 6, the
Pendant ces opérations, la charge CH tourne en continu avec ou sans variation de vitesse.During these operations, the load CH rotates continuously with or without variation of speed.
En référence aux figures 7 et 8, on réalise des manoeuvres identiques à celles décrites précédemment pour les figures 5 et 6 de manière à recouvrir une autre partie de la face supérieure 17. Le chariot CM de support de la bobine 11, des rouleaux de guidage 21, et du dispositif de renvoi 28, reste dans la position haute durant ces opérations. Ces opérations peuvent être répétées pour assurer une étanchéité partielle ou totale de la face 17 de la charge CH.With reference to FIGS. 7 and 8, maneuvers identical to those previously described for FIGS. 5 and 6 are carried out so as to cover another part of the
La figure 9 représente l'opération de banderolage des plans de la face latérale 16, en faisant coulisser le chariot CM vers la position basse, les rouleaux de guidage 21 et le dispositif de renvoi 28 restant maintenus dans la position verticale.Figure 9 shows the wrapping operation of the planes of the
Sur la figure 10, le basculement des rouleaux de guidage 21 et du dispositif de renvoi 28 vers la position horizontale permet d'obtenir un plissage de la laize à une hauteur prédéterminée de la base, par exemple comprise entre 3 cm et 20 cm. La pince 23 ouverte récupère cette partie plissée du film lors de la rotation poursuivie de la charge CH sur le plateau 13.In Figure 10, the tilting of the
Sur la figure 11, on arrête la rotation du plateau 13, sans modifier la position du chariot CM et des rouleaux de guidage 21. La fermeture de la pince de retenue 23 permet ensuite de couper la bande de film 12 après avoir solidarisé par soudure la partie terminale à la charge CH.In FIG. 11, the rotation of the
Sur la figure 12, la charge CH emballée sur ses cinq faces, est dégagée du plateau 13, lequel est immobilisé en rotation. Le film 12 maintenu dans la pince 23, est en attente pour un nouveau cycle d'emballage.In FIG. 12, the charge CH packaged on its five faces is disengaged from the
Sur le plateau 13 peut être montée une table de manutention équipée d'organes de roulement motorisés, de chaînes de transmission ou d'une bande transporteuse pour acheminer automatiquement la charge CH emballée depuis un poste amont ou l'évacuer vers un poste aval.On the
Dans la variante de réalisation de la figure 13, la bobine 11 de stockage du film 12 est fixe en étant agencée à axe horizontal au niveau du sol. A la sortie de la bobine 11 se trouve un dispositif de pré-étirage 24 du film permettant de pré-étirer le film issu de la bobine 11 avant de le faire passer dans un dispositif accumulateur 25. Le dispositif de pré-étirage 24 d'un type bien connu, comporte des rouleaux 26 entre lesquels passe le film 12, les rouleaux 26 étant entraînés à des vitesses circonférentielles différentes par un mécanisme motoréducteur 27 associé à un couple de pignons 29, 30 de diamètres différents. Le dispositif accumulateur 25 comprend une série de rouleaux espacés selon divers niveaux pour stocker une certaine longueur de film 12 pré-étiré, permettant un déplacement vertical du chariot CM indépendamment de la hauteur de la charge CH. Le dispositif de renvoi 28 à 45° est intercalé entre le dispositif accumulateur 25 et les deux rouleaux de guidage 21 de manière à positionner la laize de film 12 parallèlement à la surface latérale 16 de la charge CH. Les deux dispositifs 25, 28 accumulateur et de renvoi peuvent se déplacer en translation verticale pour effectuer un banderolage hélicoïdal autour de la charge CH. La bobine 11 et le dispositif de pré-étirage 24 restent assujettis au sol, ou à un châssis fixe.In the variant embodiment of FIG. 13, the
Sur la figure 14, le dispositif de renvoi 28 à 45° et les rouleaux de guidage 21 basculent (flèche F7) par rapport à un axe horizontal pour effectuer le recouvrement de la face supérieure 17. Le reste du cycle d'emballage est similaire à celui décrit précédemment.In FIG. 14, the
Selon une autre variante (non représentée), le dispositif de pré-étirage du film peut être monté sur le chariot mobile CM de la figure 1, de manière à se déplacer avec la bobine 11 entre la position basse et la position haute.According to another variant (not shown), the pre-stretching device of the film can be mounted on the movable carriage CM of Figure 1, so as to move with the
Il est également possible d'intégrer le dispositif de pré-étirage dans le système de guidage 15 multidirectionnel du film 12, par exemple en remplaçant les rouleaux 21 libres en rotation de la figure 1 par des rouleaux de préétirage motorisés ou non, et tournant à des vitesses différentes.It is also possible to integrate the pre-stretching device in the multi-directional guide system of the
Dans le cas d'un film thermo-rétractable, la charge emballée par banderolage sur le plateau 13, passe ensuite dans un poste de rétraction renfermant une hotte ou un four pour effectuer la thermorétraction du film sur la charge CH.In the case of a heat-shrinkable film, the load wrapped by wrapping on the
Selon une autre variante de réalisation, le chariot CM peut être animé d'un mouvement de rotation autour de la charge CH après neutralisation des moyens d'actionnement 14 rendant le plateau 13 fixe.According to another embodiment, the carriage CM can be driven in a rotational movement around the load CH after neutralization of the actuating means 14 making the
En fonction des cadences d'emballage souhaitées, il est également possible de faire usage d'un chariot animé d'un mouvement relatif de rotation inverse par rapport à celui du plateau de la charge.Depending on the desired packaging rates, it is also possible to make use of a carriage with a relative rotational movement opposite to that of the load plate.
Claims (12)
- A machine for packaging a load (CH) by means of a film (12) made of flexible plastic material, comprising:- a rotating table (13) supporting the load (CH),- means for supporting a storage reel (11) of the film,- means (14) for actuating the table (13) in rotation,- a device (15) for multidirectional guiding of the film to cover the side face (16) and the horizontal top face (17) of the load (CH) without discontinuity by stretch wrapping, said device being fitted between the reel (11) and the rotating table (13) and comprising means for swivelling around a pivoting axis (22) between a horizontal position and a vertical position, and means for translational movement between a lowered position and a raised position separated from one another by a vertical travel that is adjustable according to the height of the load (CH),characterized in that the multidirectional guiding device (15) forms an assembly comprising a pair of guide rollers (21) between which the film runs, and an inclined countershaft device (28).
- The packaging machine according to claim 1, characterized in that the film storage reel (11) and the multidirectional guiding device (15) are mounted on a moving carriage (CM) constituting said translational movement means.
- The packaging machine according to claim 1, characterized in that the film storage reel (11) is a fixed-axis reel and is associated with an accumulator device (25) placed before the countershaft device (28).
- The packaging machine according to claim 3, characterized in that the accumulator device (25) and the countershaft device (28) are mobile so as to perform spiral stretch wrapping around the load (CH).
- The packaging machine according to one of the foregoing claims, using a stretchable film, characterized in that the film (12) is wound on the reel (11) in a pre-stretched state.
- The packaging machine according to one of claims 1 to 4, using a stretchable film, characterized in that a pre-stretching device of the film (12) is arranged on output from the reel (11) and comprises a pair of motor-driven or non motor-driven rollers (26) enabling the film to be unwound on the downline side at a greater speed that that of the upline side.
- The packaging machine according to one of claims 1 to 4, using a stretchable film, characterized in that a pre-stretching device of the film (12) is associated with the multidirectional guiding device (15).
- The packaging machine according to one of the foregoing claims, characterized in that the multidirectional guiding device (15) comprises a pair of non motor-driven rollers (21) between which the film (12) runs.
- The packaging machine according to one of the foregoing claims, characterized in that the countershaft device (28) is inclined at 45°, the reel (11) extending in a horizontal plane with respect to the ground.
- The packaging machine according to one of claims 1 to 8, characterized in that the reel (11) extends vertically in a parallel direction to the axis of rotation of the table (13).
- The packaging machine according to claim 2 or 3, characterized in that the carriage (CM) is animated with a rotation movement around the load (CH) after the actuating means 14 have been neutralized in rotation.
- The packaging machine according to claim 2 or 3, characterized in that the carriage (CM) is animated with a relative reverse rotation movement with respect to that of the table (13) of the load (CH).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0214764A FR2847554B1 (en) | 2002-11-25 | 2002-11-25 | PACKING MACHINE BY BANDOLATING A LOAD USING A PLASTIC FILM |
FR0214764 | 2002-11-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1422143A1 EP1422143A1 (en) | 2004-05-26 |
EP1422143B1 true EP1422143B1 (en) | 2007-11-07 |
Family
ID=32187812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030354085 Expired - Lifetime EP1422143B1 (en) | 2002-11-25 | 2003-11-24 | Apparatus for wrapping a load by means of a plastic foil |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1422143B1 (en) |
DE (1) | DE60317293T2 (en) |
DK (1) | DK1422143T3 (en) |
ES (1) | ES2295534T3 (en) |
FR (1) | FR2847554B1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008049148A1 (en) * | 2006-10-25 | 2008-05-02 | Safetech Pty Ltd | Palletising load by wrapping with tape |
CN107187910A (en) * | 2016-03-14 | 2017-09-22 | 新昌县大市聚镇海房机械厂 | A kind of industry twines film draw-gear |
CN110481837B (en) * | 2019-09-26 | 2021-06-01 | 河北科技大学 | Box self-winding packaging machine |
CN114933042B (en) * | 2022-06-08 | 2024-01-26 | 浙江临安金洲纸业有限公司 | Packing apparatus of large-scale scroll |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5940683B2 (en) | 1980-12-13 | 1984-10-02 | シンワ化学工業株式会社 | Pallet stretch packaging method using composite stretch film |
FR2572359B1 (en) * | 1984-10-25 | 1987-09-25 | Newtec Int | METHOD AND MACHINE FOR COVERING THE SIDE FACES OF A LOAD WITH A PLASTIC FILM STRIP |
JPH04128106A (en) * | 1990-06-25 | 1992-04-28 | Tsukasa Kasei Kogyo Kk | Method and device for venting and packaging of accumulated goods |
FR2664565B1 (en) | 1990-07-16 | 1994-05-13 | Newtec International | METHOD AND MACHINE FOR PACKAGING THE SIDE SIDE AND AN END FACE OF A LOAD. |
FR2678896B1 (en) | 1991-07-11 | 1994-02-25 | Newtec International | METHOD AND MACHINE FOR PACKING THE VERTICAL AND TOP END SIDE FACES OF A PALLETIZED LOAD. |
-
2002
- 2002-11-25 FR FR0214764A patent/FR2847554B1/en not_active Expired - Fee Related
-
2003
- 2003-11-24 DK DK03354085T patent/DK1422143T3/en active
- 2003-11-24 ES ES03354085T patent/ES2295534T3/en not_active Expired - Lifetime
- 2003-11-24 EP EP20030354085 patent/EP1422143B1/en not_active Expired - Lifetime
- 2003-11-24 DE DE2003617293 patent/DE60317293T2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2295534T3 (en) | 2008-04-16 |
FR2847554A1 (en) | 2004-05-28 |
EP1422143A1 (en) | 2004-05-26 |
DK1422143T3 (en) | 2008-03-25 |
FR2847554B1 (en) | 2006-02-10 |
DE60317293T2 (en) | 2008-08-21 |
DE60317293D1 (en) | 2007-12-20 |
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