EP1048571B1 - Apparatus for packaging a palettized load by means of a heat shrinkable sleeve - Google Patents
Apparatus for packaging a palettized load by means of a heat shrinkable sleeve Download PDFInfo
- Publication number
- EP1048571B1 EP1048571B1 EP20000410041 EP00410041A EP1048571B1 EP 1048571 B1 EP1048571 B1 EP 1048571B1 EP 20000410041 EP20000410041 EP 20000410041 EP 00410041 A EP00410041 A EP 00410041A EP 1048571 B1 EP1048571 B1 EP 1048571B1
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- EP
- European Patent Office
- Prior art keywords
- sleeve
- heat
- fitting
- handling apparatus
- palette
- 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
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- 238000004806 packaging method and process Methods 0.000 title description 2
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009459 flexible packaging Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 210000000056 organ Anatomy 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
- B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
- B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
- B65B53/066—Mobile frames, hoods, posts or the like
Definitions
- the retraction cycle used in material handling machines known successively comprises a first step of transferring the load under the stuffing station, a second transfer step under the retraction station, a step of raising the load allowing the flexible sheath to go lower than the lower level of the support pallet, a first step of retraction of the part low overflowing the sheath, a suction stage of this part overflowing from 10 to 20 cm below the lower plane of the pallet, a step of depositing the load on the carrier, and finally a second step of retraction of the lateral faces of the sheath on the load by vertical displacement from bottom to top of the furnace frame.
- the horizontal transfer of the load from the upstream station to the retraction, and the retraction station to the downstream station, is usually provided by a roller conveyor, or with handling chains.
- the lifting movement of the palletised load allowing the forced folding of the film under the lower plane of installation of the support pallet is generally provided by a actuating mechanism actuated by cylinders pneumatic or hydraulic.
- Support elements adapted to the dimensions and shape of the pallet are arranged between the boards of the laying plane, commonly called skis, so as not to interfere with the return to the inside of the film over a distance of 100 the entire perimeter of the support pallet.
- the film can be sucked to the center of the pallet, for example as quoted in EP-A-133462, and facilitate this conformation for some applications.
- the pallet is then rested on the transporter, the overflowing part the film is then pinched between the chains or rolls of the carrier, and the lower boards or skis from the support pallet.
- This pinch allows, during and after the retraction of the lateral and upper faces of the sheath onto the palletized load, to increase the shrink resistance of the packaging cover, and to optimize the cohesion loads during cooling.
- the invention aims to remedy the three aforementioned drawbacks, and consists to realize a handling device now load in his plan of transfer, without level change during retraction and conformation of the film under the pallet.
- the folding means comprise a fan associated with a suction duct telescope located between the operating pads, said sheath being arranged to direct the hot air in a substantially constant direction, urging the end bottom of the film sucked under the sleepers of the pallet.
- the actuating members are formed by cams mounted on at least one shaft rotated by a motor.
- the shaft can be coupled directly to the engine, or via a chain Kinematic transmission.
- the engine comprises inversion means the direction of rotation, so as to blow the air towards an internal surface to unfold the sheath and move it away from the pallet when the motor rotates in one direction of rotation predetermined, then to create a depression inside the sheath to conform the lower end of said sheath under the sleepers when the engine is running in the opposite direction in the retraction phase.
- the telescopic sheath is formed by a first fixed skirt of the fan attached to the frame of the transfer chains, and a second mobile skirt in connection with the maneuvering pads.
- the second cylindrical skirt has a diameter greater than that of the first skirt, and is mounted coaxially with it.
- the depression inside the sheath is obtained by means of a first suction when the support frame of the furnace is moved down towards the lower end of the sheath, and a second suction more stronger than the first during the retraction phase of said end.
- the start of the first suction advantageously precedes the heating phase for the retraction of said end of the sheath.
- the palletized load 1 is based on a support pallet 2 of wood or plastic.
- Transfer chains 3 are carried by rails integral with each other, and constituting the chassis 4 of the chains 3.
- This assembly is supported by means of pebbles 5, out of four 7 drive cams connected two by two to two drive shafts 6 parallel, which are positioned symmetrically along the length of the table being connected to a motor 8 directly at the end of the shaft, or via a transmission channel.
- the rollers 5 are positioned in this phase on the part high cams 7, that is to say on a sector of large diameter of this cam.
- the heat-shrinkable cover 17 is placed on the load, and the lower edge rests on the chains 3.
- a fan 14 integral with the chassis 4 of the transfer chains 3 is implanted between the four pads 9 of maneuver, and has a first skirt vertical 15 also attached to said frame.
- a second cylindrical skirt 16 having a diameter slightly greater than that of the first skirt 15, is fixed on the frame of the studs 9, and moves with them vertically.
- the second skirt 16 is mounted coaxially on the first skirt 15 forming a telescopic sheath.
- Figure 2 shows the phase prior to the retraction of the part lower the sheath 17.
- the air sucked by the fan 14 towards the inside of the cover 17, is blown into the annular space between the top of the second skirt 16 and the floor 10 of the pallet 2.
- the air flow is directed against the inner surface of the sheath retractable 17, and away from the pallet 2.
- the sheath 17 is thus released from any attachment point, and unfolds by falling down.
- the duct section required for conformation under the skis 11 of the pallet 2 is usable in its entirety.
- a hot air generator 18 is mounted on the frame, which descends vertically along the sheath (see arrow F1).
- the fan 14 then turns in the opposite direction at low speed to cause a first aspiration intended to bring the film closer to the load 1 and avoid any skim effect that would caused by a subsequent entry of hot air under the sheath 17.
- the air generator hot 18 is not in use during this downward movement along F1.
- Figure 3 represents the first step of retraction of the part bottom of the sheath 17.
- the hot air generator 18 operates and sends the hot air against the lower end of the sheath 17 to the bring to its retraction temperature.
- the film of the sheath 17 is sucked towards the center of the table in a direction d (d 'for the symmetrical part of the machine).
- the suction direction d or of the film is substantially horizontal.
- the fan motor 14 rotates in the same direction, but at a higher speed than that of Figure 2a, so as to create a strong depression inside the cover. This second aspiration is more strong than the first aspiration.
- FIG. 4 represents the entire device at the instant preceding the contact between chains 3, film 17 and skis 11.
- FIG. 5 represents the second step of retraction of the faces side of the sheath 17 against the load.
- the hot air generator 18 is moving vertically from bottom to top (arrow F2), the film 17 being pinched under the skis 11 of the pallet 2.
- the plots 9 maneuver are moved under the plane of the chains of transfer 3 to allow the subsequent evacuation of the packaged load.
- the pads 19 are supported by means of rollers 12, with the small diameter portion 13.
- the motor 8 may have meanings of identical or inverted rotation.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
Description
L'invention est relative à un dispositif de manutention pour la pose d'une gaine plastique thermorétractable sur une charge palettisée, et comprenant :
- des moyens de mise en place de la gaine souple d'emballage sur la charge posée sur la palette support,
- des moyens de repliement par aspiration de l'extrémité inférieure de la gaine sous le plan de pose de la palette support,
- et des moyens de rétraction par émission d'air chaud vers la surface latérale de la gaine à rétracter.
- means for placing the flexible packaging sheath on the load placed on the support pallet,
- suction refolding means of the lower end of the sheath under the laying plane of the support pallet,
- and means of retraction by emission of hot air to the lateral surface of the sheath to retract.
Le cycle de rétraction utilisé dans les machines de manutention connues, comporte successivement une première étape de transfert de la charge sous le poste de houssage, une deuxième étape de transfert sous le poste de rétraction, une étape d'élévation de la charge permettant à la gaine souple de descendre plus bas que le niveau inférieur de la palette support, une première étape de rétraction de la partie basse débordante de la gaine, une étape d'aspiration de cette partie débordante de 10 à 20 cm sous le plan inférieur de la palette, une étape de dépose de la charge sur le transporteur, et enfin une deuxième étape de rétraction des faces latérales de la gaine sur la charge par déplacement vertical de bas en haut du cadre générateur d'air chaud.The retraction cycle used in material handling machines known, successively comprises a first step of transferring the load under the stuffing station, a second transfer step under the retraction station, a step of raising the load allowing the flexible sheath to go lower than the lower level of the support pallet, a first step of retraction of the part low overflowing the sheath, a suction stage of this part overflowing from 10 to 20 cm below the lower plane of the pallet, a step of depositing the load on the carrier, and finally a second step of retraction of the lateral faces of the sheath on the load by vertical displacement from bottom to top of the furnace frame.
Le transfert horizontal de la charge du poste amont vers le poste de rétraction, et du poste de rétraction vers le poste aval, est généralement assuré par un transporteur à rouleaux, ou avec des chaínes de manutention.The horizontal transfer of the load from the upstream station to the retraction, and the retraction station to the downstream station, is usually provided by a roller conveyor, or with handling chains.
Pendant la première étape de rétraction de la partie inférieure de la gaine plastique, le mouvement d'élévation de la charge palettisée permettant le repliement forcé du film sous le plan inférieur de pose de la palette support, est généralement assuré par un mécanisme de manoeuvre actionné par des vérins pneumatiques ou hydrauliques.During the first step of retraction of the lower part of the plastic sheath, the lifting movement of the palletised load allowing the forced folding of the film under the lower plane of installation of the support pallet, is generally provided by a actuating mechanism actuated by cylinders pneumatic or hydraulic.
Des éléments supports adaptés aux dimensions et à la forme de la palette, sont agencés entre les planches du plan de pose, communément appelés skis, de façon à ne pas gêner le retour vers l'intérieur du film sur une centaine distance, et sur tout le périmètre de la palette support.Support elements adapted to the dimensions and shape of the pallet, are arranged between the boards of the laying plane, commonly called skis, so as not to interfere with the return to the inside of the film over a distance of 100 the entire perimeter of the support pallet.
Pendant cette première étape de rétraction, le film peut être aspiré vers le centre de la palette, par exemple comme cité dans le document EP-A-133462, et faciliter cette conformation pour certaines applications.During this first step of retraction, the film can be sucked to the center of the pallet, for example as quoted in EP-A-133462, and facilitate this conformation for some applications.
La palette est ensuite reposée sur le transporteur, la partie débordante du film étant alors pincée entre les chaínes ou les rouleaux du transporteur, et les planches inférieures ou skis de la palette support. Ce pincement permet, pendant et après la rétraction des faces latérales et supérieure de la gaine sur la charge palettisée, d'augmenter la résistance au retrait de la housse d'emballage, et d'optimiser la cohésion de charges lors du refroidissement.The pallet is then rested on the transporter, the overflowing part the film is then pinched between the chains or rolls of the carrier, and the lower boards or skis from the support pallet. This pinch allows, during and after the retraction of the lateral and upper faces of the sheath onto the palletized load, to increase the shrink resistance of the packaging cover, and to optimize the cohesion loads during cooling.
Cependant, il est nécessaire d'effectuer rapidement un changement de niveau de la charge pour obtenir une bonne fiabilité de la conformation du film dans sa phase de rétraction. However, it is necessary to quickly make a change of level of charge to obtain a good reliability of the conformation of the film in its retraction phase.
Un tel changement de niveau est opéré couramment avec des tables
élévatrices, par exemple du type pantographe (voir EP-A-133462), mais plusieurs
difficultés sont cependant mal maítrisées avec le matériel connu :
L'invention vise à remédier aux trois inconvénients précités, et consiste à réaliser un dispositif de manutention maintenant la charge dans son plan de transfert, sans changement de niveau pendant la rétraction et la conformation du film sous la palette.The invention aims to remedy the three aforementioned drawbacks, and consists to realize a handling device now load in his plan of transfer, without level change during retraction and conformation of the film under the pallet.
Le dispositif selon l'invention est caractérisé en ce qu'il comporte :
- un premier jeu d'organes d'actionnement coopérant avec des chaínes de transfert mobiles placées sous les traverses de la palette support,
- un deuxième jeu d'organes d'actionnement coopérant avec des plots de manoeuvre disposés dans l'intervalle ménagé entre les chaínes de transfert, et destinés à venir en appui contre la surface inférieure des planches de la palette sans interférer avec les traverses longitudinales et/ou transversales,
- a first set of actuating members cooperating with mobile transfer chains placed under the crosspieces of the support pallet,
- a second set of actuating members cooperating with actuating studs arranged in the gap formed between the transfer chains, and intended to abut against the lower surface of the planks of the pallet without interfering with the longitudinal struts and / or transverse,
Les moyens de repliement comportent un ventilateur associé à une gaine d'aspiration téléscopique située entre les plots de manoeuvre, ladite gaine étant agencée pour diriger l'air chaud selon une direction sensiblement constante, sollicitant l'extrémité inférieure du film aspiré sous les traverses de la palette.The folding means comprise a fan associated with a suction duct telescope located between the operating pads, said sheath being arranged to direct the hot air in a substantially constant direction, urging the end bottom of the film sucked under the sleepers of the pallet.
Il permet ainsi de transmettre aux planches de la palette, des efforts de poussée verticale, limités pour leur totalité au seul poids de la charge palettisée, et de maintenir le film aspiré dans une direction constante, avec un maximum d'efficacité pour positionner le film sous les traverses ou skis.It thus makes it possible to transmit to the boards of the pallet, thrust forces all of which are limited solely to the weight of the palletised load, and keep the film sucked in a constant direction, with maximum efficiency to position the film under sleepers or skis.
Selon un mode de réalisation préférentiel, les organes d'actionnement sont formés par des cames montées sur au moins un arbre entraíné en rotation par un moteur. L'arbre peut être accouplé directement au moteur, ou par l'intermédiaire d'une chaíne cinématique de transmission.According to a preferred embodiment, the actuating members are formed by cams mounted on at least one shaft rotated by a motor. The shaft can be coupled directly to the engine, or via a chain Kinematic transmission.
Selon une caractéristique de l'invention, le moteur comporte des moyens d'inversion du sens de rotation, de manière à souffler l'air vers une surface interne pour déplisser la gaine et l'écarter de la palette lorsque le moteur tourne dans un sens de rotation prédéterminé, puis à créer une dépression à l'intérieur de la gaine pour conformer l'extrémité inférieure de ladite gaine sous les traverses lorsque le moteur tourne dans le sens inverse en phase de rétraction.According to one characteristic of the invention, the engine comprises inversion means the direction of rotation, so as to blow the air towards an internal surface to unfold the sheath and move it away from the pallet when the motor rotates in one direction of rotation predetermined, then to create a depression inside the sheath to conform the lower end of said sheath under the sleepers when the engine is running in the opposite direction in the retraction phase.
Préférentiellement, la gaine téléscopique est formée par une première jupe fixe du ventilateur assujetti au châssis des chaínes de transfert, et une deuxième jupe mobile en liaison avec les plots de manoeuvre. La deuxième jupe cylindrique possède un diamètre supérieur à celui de la première jupe, et est monté coaxialement avec elle.Preferably, the telescopic sheath is formed by a first fixed skirt of the fan attached to the frame of the transfer chains, and a second mobile skirt in connection with the maneuvering pads. The second cylindrical skirt has a diameter greater than that of the first skirt, and is mounted coaxially with it.
La dépression à l'intérieur de la gaine est obtenue au moyen d'une première aspiration lorsque le cadre support du générateur d'air chaud est déplacé vers le bas en direction de l'extrémité inférieure de la gaine, et d'une deuxième aspiration plus forte que la première pendant la phase de rétraction de ladite extrémité. Le début de la première aspiration précède avantageusement la phase de chauffage pour la rétraction de la dite extrémité de la gaine.The depression inside the sheath is obtained by means of a first suction when the support frame of the furnace is moved down towards the lower end of the sheath, and a second suction more stronger than the first during the retraction phase of said end. The start of the first suction advantageously precedes the heating phase for the retraction of said end of the sheath.
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 représente une vue schématique en coupe transversale d'un dispositif de manutention selon l'invention, dans sa position initiale lors de l'arrivée de la charge dans la machine, la gaine plastique étant déjà enfilée sur la charge ;
- la figure 2 est une vue identique de la figure 1 lorsque la machine se trouve dans la position qui précède la rétraction du film en partie inférieure de la gaine lors du déplissage de cette dernière ;
- la figure 2bis est une vue identique de la figure 2 lors de la descente du cadre vers l'extrémité inférieure de la gaine ;
- les figures 3
et 4 sont des vue identiques de la figure 1 lorsque la machine se trouve dans la phase de rétraction et d'aspiration de l'extrémité du film sous les traverses de la palette ; - la figure 5 est une vue identique de la figure 1 lorsque la machine se trouve dans la position finale de rétraction des faces latérales et de l'évacuation de la charge palettisée emballée.
- Figure 1 shows a schematic cross-sectional view of a handling device according to the invention, in its initial position when the load arrives in the machine, the plastic sheath already being threaded on the load;
- Figure 2 is an identical view of Figure 1 when the machine is in the position that precedes the shrinkage of the film in the lower part of the sheath during the unfolding of the latter;
- Figure 2bis is an identical view of Figure 2 during the descent of the frame towards the lower end of the sheath;
- FIGS. 3 and 4 are identical views of FIG. 1 when the machine is in the retraction and suction phase of the end of the film under the crosspieces of the pallet;
- Figure 5 is an identical view of Figure 1 when the machine is in the final retracted position of the side faces and the discharge of the packaged pallet load.
Sur la figure 1, la charge palettisée 1 repose sur une palette support 2
en bois ou en plastique. Des chaínes de transfert 3 sont portées par des longerons
solidaires entre eux, et constituant le châssis 4 des chaínes 3. In Figure 1, the
Cet ensemble prend appui par l'intermédiaire de galets 5, sur quatre
cames 7 d'entraínement connectées deux par deux à deux arbres 6 de commande
parallèles, lesquels sont positionnés symétriquement sur la longueur de la table en
étant reliés à un moteur 8 directement en bout d'arbre, ou par l'intermédiaire d'une
chaíne de transmission. Les galets 5 sont positionnés dans cette phase sur la partie
haute des cames 7, c' est à dire sur un secteur de grand diamètre de cette came.This assembly is supported by means of
Pendant le transfert, la housse thermorétractable 17 est placée sur la
charge, et le bord inférieur repose sur les chaínes 3.During the transfer, the heat-
Quatre plots 9 de manoeuvre solidaires mécaniquement entre eux, sont
disposés entre les chaínes de transfert 4, de manière à s'appuyer contre les planches
10 de la palette 2 lors de leur déplacement vertical, sans être gênés par les traverses
longitudinales et/ou transversales ou skis 11 de la palette 2. Les plots 9 reposent
également par l'intermédiaire de quatre galets 12 sur quatre cames 13 de commande
disposées deux par deux sur les deux arbres 6. Dans cette étape, les galets 12 sont
immobilisés sur le point le plus bas des cames 13 de commande.Four
Un ventilateur 14 solidaire du châssis 4 des chaínes de transfert 3 est
implanté entre les quatre plots 9 de manoeuvre, et comporte une première jupe
verticale 15 fixée également sur ledit châssis. Une deuxième jupe 16 cylindrique
ayant un diamètre légèrement supérieur à celui de la première jupe 15, est fixée sur
le châssis des plots 9, et se déplace avec eux verticalement. La deuxième jupe 16 est
montée coaxialement sur la première jupe 15 en formant une gaine téléscopique.A
La figure 2 représente la phase préalable à la rétraction de la partie
inférieure de la gaine 17. Après la rotation des deux arbres 6 à cames, la charge
palettisée repose sur les plots 9 de manoeuvre, et les galets 12 se trouvent en appui
sur la partie haute des cames 13. Les chaínes 4 sont abaissées d'une distance de
150 mm environ, et sont en appui sur la partie basse des cames 7.Figure 2 shows the phase prior to the retraction of the part
lower the
L'air aspiré par le ventilateur 14 vers l'intérieur de la housse 17, est
soufflé dans l'espace annulaire entre le haut de la deuxième jupe 16 et le plancher 10
de la palette 2. L'écoulement d'air est dirigé contre la surface intérieure de la gaine
rétractable 17 , et l'éloigne de la palette 2. The air sucked by the
La gaine 17 est ainsi dégagée de tout point d'accrochage, et se déplisse
en tombant vers le bas. Le tronçon de gaine nécessaire à la conformation sous les
skis 11 de la palette 2 est utilisable dans sa totalité.The
Sur la figure 2bis, un générateur d'air chaud 18 est monté sur le cadre,
lequel descend verticalement le long de la gaine ( voir flèche F1). Le ventilateur 14
tourne alors en sens inverse à petite vitesse pour provoquer une première aspiration
destinée à rapprocher le film de la charge 1 et éviter tout effet de jupage qui serait
provoqué par une entrée ultérieure d'air chaud sous la gaine 17. Le générateur d'air
chaud 18 n'est pas en service durant ce mouvement de descente selon F1.In FIG. 2bis, a
La figure 3 représente la première étape de rétraction de la partie
inférieure de la gaine 17.Figure 3 represents the first step of retraction of the part
bottom of the
En fin de course de descente du cadre, le générateur d'air chaud 18
fonctionne et envoie l'air chaud contre l'extrémité inférieure de la gaine 17 jusqu'à la
porter à sa température de rétraction. Le film de la gaine 17 est aspiré vers le centre
de la table selon une direction d ( d' pour la partie symétrique de la machine ). Afin de
bien conformer le film 17 sous les skis 11, la direction d'aspiration d ou d 'du film est
sensiblement horizontale. Le moteur du ventilateur 14 tourne dans le même sens,
mais à plus grande vitesse par rapport à celui de la figure 2bis, de manière à créer
une forte dépression à l'intérieur de la housse. Cette deuxième aspiration est plus
forte que la première aspiration.At the end of the descent run of the frame, the
Après quelques secondes de rétraction dans un mouvement continu de
rotation de l'arbre à cames 6, le châssis 4 des chaínes 3 porté par les galets 5 vient
progressivement en contact avec le plus grand diamètre des cames 7, et soulève les
chaínes 3 jusqu'à la venue en contact des skis 11 de la palette 2, en pinçant le film
17, sans soulever la charge 1.After a few seconds of retraction in a continuous movement of
rotation of the
La figure 4 représente l'ensemble du dispositif à l'instant qui précède le
contact entre chaínes 3, film 17 et skis 11. La déformation du film 17 aspiré selon la
direction d, est restée identique à celle de l'étape précédente, le flux d'air étant
canalisé par la deuxième jupe 16. FIG. 4 represents the entire device at the instant preceding the
contact between
La figure 5 représente la deuxième étape de rétraction des faces
latérales de la gaine 17 contre la charge. Le générateur d'air chaud 18 se déplace
verticalement du bas vers le haut ( flèche F2), le film 17 étant pincé sous les skis 11
de la palette 2. Les plots 9 de manoeuvre sont déplacés sous le plan des chaínes de
transfert 3 pour permettre l'évacuation ultérieure de la charge emballée. Les plots 19
se trouvent en appui par l'intermédiaire des galets 12, avec la partie de petit diamètre
des cames 13. Suivant le tracé des cames 7 et 13, le moteur 8 peut avoir des sens de
rotation identiques ou inversés.FIG. 5 represents the second step of retraction of the faces
side of the
Claims (10)
- Handling apparatus for fitting a heat-shrinkable plastic sleeve (17) on a palettized load, and comprising:means for placing the flexible packaging sleeve (17) on the load (1) placed on the support palette (2),means for folding the bottom end of the sleeve (17) by suction under the plane in which the support palette (2) is placed,and means for shrinking by emitting hot air to the lateral surface of the sleeve (17) to be shrunk,a first set of actuating means (7) co-operating with moving transfer chains (3) placed under the slats (11) of the support palette (2),a second set of actuating means (13) co-operating with handling pads (9) located in the gap arranged between the transfer chains (3), and designed to press against the bottom surface of the planks of the palette (2) without interfering with the longitudinal and/or transverse slats (11),and an operating mechanism of the two sets of actuating means (7, 13) to hold the transfer chains (3) against the slats (11) when the handling pads (9) are separated from the planks of the palette (2), and reciprocally to hold the handling pads (9) against said planks in the separated position of the transfer chains (3) allowing the bottom end of the sleeve (17) to be sucked underneath the slats (11) without lifting the load (1) which remains at the same level all the time.
- Handling apparatus for fitting a heat-shrinkable plastic sleeve (17) according to claim 1, characterized in that the actuating means (7, 13) are formed by cams fitted on at least one shaft (6) driven in rotation by a motor (8).
- Handling apparatus for fitting a heat-shrinkable plastic sleeve (17) according to claim 2, characterized in that the shaft (6) is coupled directly to the motor (8).
- Handling apparatus for fitting a heat-shrinkable plastic sleeve (17) according to claim 2, characterized in that the shaft (6) is coupled to the motor (8) by means of a kinematic transmission system.
- Handling apparatus for fitting a heat-shrinkable plastic sleeve (17) according to one of the claims 1 to 4, characterized in that the folding means comprise a fan (14) associated with a telescopic suction sleeve situated between the handling pads (9), said sleeve being arranged to direct the hot air in a substantially constant direction, urging the bottom end of the film (17) sucked under the slats (11) of the palette (2).
- Handling apparatus for fitting a heat-shrinkable plastic sleeve (17) according to claim 5, characterized in that the telescopic sleeve is formed by a first fixed skirt (15) of the fan (14) securedly affixed to the frame (4) of the transfer chains (3), and a second mobile skirt (16) joined tothe handling pads (9).
- Handling apparatus for fitting a heat-shrinkable plastic sleeve (17) according to claim 6, characterized in that the cylindrical second skirt (16) has a larger diameter than that of the first skirt (15) and is mounted coaxially therewith.
- Handling apparatus for fitting a heat-shrinkable plastic sleeve (17) according to one of the claims 2 to 7, characterized in that the motor (8) comprises means for reversing the direction of rotation so as to blow the air towards the inside to smooth the sleeve out (17) and separate it from the palette (2) when the motor (8) is running in a predetermined direction, and then to create a negative pressure inside the sleeve (17) to shape the bottom end of said sleeve under the slats (11) when the motor (8) is running in the reverse direction in the heat-shrinking phase.
- Handling apparatus for fitting a heat-shrinkable plastic sleeve (17) according to claim 8, characterized in that the negative pressure inside the sleeve (17) is obtained by means of a first suction when the hot air generator support frame is moved downwards in the direction of the bottom end of the sleeve (17), and of a second suction, stronger than the first one, during the shrinking phase of said end.
- Handling apparatus for fitting a heat-shrinkable plastic sleeve (17) according to claim 8 or 9, characterized in that the beginning of the first suction precedes the heating phase for shrinking of said end of the sleeve (17).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9905415A FR2792609B1 (en) | 1999-04-26 | 1999-04-26 | HANDLING DEVICE FOR LAYING A HEAT SHRINKABLE PLASTIC SHEATH ON A PALLETIZED LOAD |
FR9905415 | 1999-04-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1048571A1 EP1048571A1 (en) | 2000-11-02 |
EP1048571B1 true EP1048571B1 (en) | 2004-03-03 |
Family
ID=9544999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20000410041 Expired - Lifetime EP1048571B1 (en) | 1999-04-26 | 2000-04-26 | Apparatus for packaging a palettized load by means of a heat shrinkable sleeve |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1048571B1 (en) |
DE (1) | DE60008618D1 (en) |
ES (1) | ES2215593T3 (en) |
FR (1) | FR2792609B1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111114872A (en) * | 2018-11-01 | 2020-05-08 | 浙江彩创包装材料科技有限公司 | Auxiliary device for enveloping bottle bottom |
CN110834771A (en) * | 2019-11-22 | 2020-02-25 | 安徽永锋智能包装科技有限公司 | Bottom-closing method for transparent packaging bag of refrigerator |
CN110745306A (en) * | 2019-11-22 | 2020-02-04 | 安徽永锋智能包装科技有限公司 | Refrigerator packing bottom-closing equipment |
CN115444020A (en) * | 2022-09-28 | 2022-12-09 | 江苏中大新材料科技有限公司 | Shrinking device and shrinking process for heat shrinkable film |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3327996A1 (en) | 1983-08-03 | 1985-02-14 | MSK - Verpackungs-Systeme GmbH, 4190 Kleve | METHOD FOR PACKING PALLETIZED GOODS STACKS AND DEVICE FOR CARRYING OUT THIS METHOD |
ATE143326T1 (en) * | 1992-12-04 | 1996-10-15 | Erapa Ceka Maschbau | METHOD AND DEVICE FOR PACKAGING PARTICULARLY STACKED GOODS WITH A HOT-SHRINKABLE FILM COVER |
DE4423513C1 (en) * | 1993-10-26 | 1996-02-01 | Moellers Maschf Gmbh | Device for shrinking a shrink film hood |
FR2719019B1 (en) * | 1994-04-22 | 1996-05-31 | Newtec Int | Method for packaging a load using a heat-shrinkable sheath and packaging machine using such a method. |
FR2723564B1 (en) * | 1994-08-12 | 1996-09-20 | Newtec Int | PROCESS AND DEVICE FOR OVERPACKING, BY THERMO-RETRACTION, OF A PALLETIZED LOAD |
-
1999
- 1999-04-26 FR FR9905415A patent/FR2792609B1/en not_active Expired - Lifetime
-
2000
- 2000-04-26 ES ES00410041T patent/ES2215593T3/en not_active Expired - Lifetime
- 2000-04-26 DE DE60008618T patent/DE60008618D1/en not_active Expired - Lifetime
- 2000-04-26 EP EP20000410041 patent/EP1048571B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE60008618D1 (en) | 2004-04-08 |
FR2792609A1 (en) | 2000-10-27 |
FR2792609B1 (en) | 2001-07-13 |
ES2215593T3 (en) | 2004-10-16 |
EP1048571A1 (en) | 2000-11-02 |
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