EP0177413B1 - Method and machine for automatically banding a load with a plastic film strip - Google Patents

Method and machine for automatically banding a load with a plastic film strip Download PDF

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Publication number
EP0177413B1
EP0177413B1 EP19850401877 EP85401877A EP0177413B1 EP 0177413 B1 EP0177413 B1 EP 0177413B1 EP 19850401877 EP19850401877 EP 19850401877 EP 85401877 A EP85401877 A EP 85401877A EP 0177413 B1 EP0177413 B1 EP 0177413B1
Authority
EP
European Patent Office
Prior art keywords
load
column
reel
machine according
free end
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
Application number
EP19850401877
Other languages
German (de)
French (fr)
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EP0177413A1 (en
Inventor
Hubert Thimon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Newtec International SA
TECNE Srl
Original Assignee
Newtec International SA
TECNE Srl
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Filing date
Publication date
Application filed by Newtec International SA, TECNE Srl filed Critical Newtec International SA
Publication of EP0177413A1 publication Critical patent/EP0177413A1/en
Application granted granted Critical
Publication of EP0177413B1 publication Critical patent/EP0177413B1/en
Expired legal-status Critical Current

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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
    • B65B11/02—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
    • B65B11/025—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders by webs revolving around stationary articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2210/00—Specific aspects of the packaging machine
    • B65B2210/14—Details of wrapping machines with web dispensers for application of a continuous web in layers onto the articles
    • B65B2210/20—Details of wrapping machines with web dispensers for application of a continuous web in layers onto the articles the web dispenser being mounted on a rotary arm

Definitions

  • the invention relates to a method and an automatic banding machine for a load with a plastic film strip whose width is a fraction of the height of the load to be wrapped.
  • Such a machine comprises a film reel support which can be moved along a path surrounding the load by drive means, means for hooking one end of the film strip, means for joining the parts. extremities of the strip to form a strip surrounding the load and means for effecting a relative displacement of the spool relative to the load in order to bring the spool to the area on which the strip is to be applied.
  • an automatic banding machine for a load with a strip of plastic film whose width is a fraction of the height of the load to be wrapped.
  • This machine comprises a frame, a fixed load support table, means for supporting a reel of film with a vertical axis pivotally mounted around a vertical axis passing through the table; rotary drive means of the coil support means and means for sliding the coil in a vertical direction on the support means.
  • Such a machine is intended to produce a helical wrapping.
  • it does not make it possible to produce a wrapping by beds, in particular because the maintenance of the initial free end portion of the film strip is not automated.
  • the invention aims to remedy these drawbacks and, to this end, it provides an automatic banding machine for a load with a strip of plastic film whose width is a fraction of the height of the load to be wrapped, which includes a frame, a load support table, fixed when the machine is in operation; means for supporting a film reel with a generally vertical axis, pivotally mounted about a vertical axis passing through the table and located at least partially above the table and of the load to be wrapped; means for rotating the reel support means, first means for sliding the reel in a vertical direction; means for temporarily holding the initial free end part of the film strip close to or against the load; means for cross-cutting the film strip; means for securing the film strip, characterized in that, in combination, in the first place it comprises second means for sliding cutting and securing means, in a vertical direction comprising a second column on which is mounted a carriage console, drive means ensuring the vertical movement of the carriage console; secondly, the lower free end portion of the spool respectively of the coil is, in per
  • the wrapping process using the machine according to the invention comprises the following steps: the load is brought to the table, a film reel is mounted on the support means provided for this purpose, the initial extreme free part of the film strip near or against the load thanks to the holding means, the reel support means are pivoted about their vertical axis, thanks to the drive means, until covering the free end of the reel and the desired number of strip layers, the means for retaining the initial free end are disengaged, the film is cut transversely, the end free end part of the film is secured to the film strip on the load, which makes it possible to produce thus an elementary wrapping on a slice of the load, a new free extreme part of film is recovered, the film reel and the means for maintaining a step in the sen are moved synchronously s vertical to be able to carry out another elementary wrapping on another part of the load.
  • the invention relates to a method and an automatic wrapping machine for a load 1 with a plastic film strip 2.
  • the load 1 is preferably a load carried by a pallet 3, having a generally parallelepiped shape having a horizontal bottom resting on the pallet 3, four vertical faces 4 and an upper horizontal face 5.
  • the method and the machine according to the invention aim to apply to the vertical faces 4 of the load 1 strips 6a, 6b ... ( Figure 8) placed at various locations of the load, spaced from each other d 'a distance t constituting the wrapping step.
  • a strip such as 6a, 6b is designated subsequently as an elementary wrapping.
  • the method and the machine apply to the production of at least one and generally several elementary wrapping, the pitch being constant or not.
  • the film strip 2 has a width which is a fraction of the height of the load 1, that is to say that a strip such as 6a, 6b covers only part of the height of the load 1. If necessary, the strip 2 may be of small width, the wrapping carried out then being a strapping.
  • FIGS. 3 to 7 illustrate a machine 7 for automatically wrapping a load such as 1 with a strip 2.
  • the machine 7 has a frame 8; a table 9 for supporting the load 1, in a fixed position when the machine is in operation; support means 10 for a film reel 2a from which the strip 2 originates, this reel 2a having a generally vertical axis and the support means 10 being pivotally mounted about a vertical axis 11 passing through the table 9, the support means 10 being located at least partially above the table 9 and the load 1 that it supports; rotation drive means 12 support means 10; first sliding means 13 for the coil 2a in a vertical direction; temporary holding means 14 of the initial free end portion a of the film strip 2 near or against the load 1; means for cross-cutting 15 of the film strip 2; and means 16 for securing the end free end portion b of the strip 2 with a strip 6a, 6b already on the load.
  • the frame 8 comprises a base 17 resting on the ground, vertical uprights 18 and an upper horizontal roof 19 comprising longitudinal members, crosspieces, plates or the like.
  • the frame 8 further comprises two horizontal beams 20 carried by feet 21 supporting rollers 22 constituting, on the one hand, the table 9 and on both sides a supply conveyor 23a and an evacuation conveyor 23b of the load respectively before and after wrapping.
  • the support means 10 comprise a first vertical column 24 carried at the end of a horizontal arm 25 pivotally mounted on the roof 19 around the axis 11.
  • the axis 11 is located in the middle part of the arm 25 which, on one side, supports the first column 24 and, on the other side, forms a counterweight 26.
  • the spacing between the axis 11 and the first column 24 is such that by pivoting around of axis 11, the first column 24 envelops the load 1.
  • the drive means 12 are constituted for example by a motor or a geared motor with an axis 11 carried by the roof 19 above the latter.
  • the holding means 14 comprise two small clamp jaws 27a, 27b directed vertically and upwards in the closed holding state and horizontally in the open state without holding.
  • the two jaws 27a, 27b are articulated at their lower part around axes 28 each horizontal and transverse (that is to say extending parallel to the axes of the rollers 22).
  • These jaws 27a, 27b are carried at their lower part by a console 29, arranged horizontally and transversely and carried by the frame 8, so that the jaws 27a, 27b are located in the immediate vicinity of the table 9, in particular of the corresponding spar 20 .
  • the cutting means 15 and securing 16 are in the form of two large gripper jaws 30a, 30b carried by the console 29 in front of the jaws 27a, 27b, that is to say in even more immediate proximity to the table 9.
  • the jaws 30a, 30b are also movable around the axes 28.
  • One of the jaws comprises an elastically deformable flap 31 directed towards the table 9 capable of coming to apply the strip of film 2 against itself, constituting the fastening means 16, the film being self-adhesive.
  • the jaws 30a, 30b are in the active state vertical directed upwards and closed and, on the contrary, in the inactive state directed horizontally.
  • the machine includes electrical, pneumatic or other control means for the jaws 27a, 27b, 30a, 30b.
  • the support means 10 in particular the first column 24 and the coil 2a in pivoting, envelop the jaws 27a, 27b, 30a, 30b which are in the immediate or almost immediate proximity of the load 1, in particular a vertical reference face 4a thereof.
  • the machine 7 may finally comprise a presser 32 carried by the roof 19, below it and directly above the table 9, controlled by vertical sliding so as to be able to come to be applied on the upper horizontal face 5 of the load 1 and strengthen its hold during the wrapping.
  • the machine 7 also comprises second sliding means 33 of the holding means 14, cutting 15 and securing 16, in a vertical direction.
  • the first and second sliding means 13, 33 respectively comprise, on the one hand, guide means and, on the other hand, drive means.
  • the machine 7 also includes synchronization means, not shown, first and second drive means, belonging to the sliding means 13, 33, so that the holding means 14, cutting 15 and securing 16 are placed substantially in look of the coil 2a at the beginning and at the end of each elementary wrapping, at least.
  • the machine 7 comprises control means, not shown, of these means for driving the coil 2a and means for holding 14 the cut 15 and the connection 16 ′ so that the coil 2a and these means 14, 15, 16 , are moved by one wrapping step between each elementary wrapping cycle and the following cycle.
  • synchronization and control means can be electrically, pneumatically or otherwise, within the reach of those skilled in the art and connected to a central console 34.
  • the first sliding means 13 are such that the pin 2c supporting the coil is in a fixed relative position relative to the lower free end portion which supports it from the first column 24, and this preferably.
  • the support means 10 are arranged so that the length of the first column 24 between the support arm 25 and the lower free end portion 35 is variable, the support arm 25 then remaining in principle in a plane horizontal fixed.
  • the first column 24 is telescopic and comprises, for example, three sections: an upper section 24a adjoining the arm 25, a middle section 24b and a lower section 24c supporting the pin 2c.
  • the first column 24 is rigid and non-deformable (therefore non-telescopic) but it is mounted on the arm 25 so that it can be moved vertically relative to this arm.
  • the first column 24 may include a rack meshing with a driving pinion carried by the arm 25.
  • the first sliding means 13 are therefore constituted by the first telescopic column 24 and by reciprocal linear drive means 36 shown diagrammatically, electric or pneumatic.
  • the support means 10 are arranged so that the column length between the arm 25 and the lower free end portion 35 remains fixed or generally fixed, the horizontal plane of movement of the arm 25 being vertically movable.
  • the first sliding means 13 are constituted by the sliding means of the arm 25.
  • first and the second embodiment can be combined with each other, the first column 24 being, for example, telescopic while the upper section 24a is itself mounted to slide relative to to the arm 25 which is also mounted sliding vertically. This arrangement can be useful in the case of loads of great height.
  • the first sliding means 13 are such that the coil 2a is permanently located at the lower end portion 35 of the first column 24, regardless of the height position of the coil 2a.
  • the pin 2c respectively the coil 2a, has its lower free end which, permanently, projects below or is coplanar with the lower free end 37 of the first column 24. It follows that when the coil 2a is set in motion around the axis 11 by the drive means 12, the space below the free end of the coil 2a is completely freed. This provision is important, since the holding means 14, cutting 15 and securing 16 must be placed substantially opposite the coil 2a but it should be avoided that they interfere with the support means 10.
  • the second sliding means 33 comprise a second column 38, fixed, on which is mounted the console 39 which forms a carriage, drive means ensuring the vertical movement of the carriage console 29, therefore means for holding 14 cutting 15 and of securing 16 that it supports.
  • the second column 38 is telescopic, the carriage console 29 occupying at the lower end thereof a fixed position.
  • the carriage console 29 is mounted to slide vertically on the second column 38 which forms a slide and is therefore not deformable.
  • the second column 38 is also rigid and non-deformable and supports the carriage console 29 in a fixed manner, the whole of the column 38 being mounted to slide vertically.
  • the lower free end of the journal 2c, respectively of the coil 2a is located at a level, slightly higher than that of the carriage console 29 and this permanently.
  • the invention also relates to a wrapping method using the machine which has just been described.
  • the load 1 is brought to the table 9.
  • the load 1 is kept stationary, the table 9 being so.
  • this support can be reinforced by the presser 32.
  • a film reel 2a is mounted on the support means 10.
  • the film reel 2a is then close to the holding means 14, cutting 15 and securing 16, slightly above the carriage console 29 ( Figures la and 2a).
  • the initial free end portion a of the film strip 2 coming from the reel 2a is then maintained near or against the vertical reference face 4a of the load 1, the holding means 14 being active, therefore directed vertically and upwards.
  • the cutting means 15 and securing means 16 are inactive, therefore horizontal and located at a level lower than that of the strip 2.
  • the support means 10 for the coil 2a can then be pivoted using the drive means 12, while maintaining the initial free end portion a of the strip. At the end of a revolution, the strip covers the initial free end part a of the strip (FIGS. 1b and 2b). The number of turns of the strip of tape is therefore carried out.
  • the retaining means 14 are then disengaged from the initial free end portion a of the strip by pivoting the jaws 27a, 27b downwards around the axes 28, as far as horizontal (FIGS. 1 c and 2 c).
  • the film is cut transversely and the end free end portion of the latter is secured to the strip already on the load.
  • the cutting and securing means 15, 16 are used. More specifically, the jaws 30a, 30b are pivoted around the axes 28 from their horizontal position where they are inactive to their vertical position directed towards the top.
  • the cutting teeth with which the jaws 30a, 30b are provided, carry out the cross-section while the flap 31 comes to apply the strip of film to itself which, taking into account its self-adhesive character, achieves the joining.
  • the connection is made by separate welding.
  • the holding means 14 are made active, that is to say that the jaws 27a, 27b are pivoted from their inactive horizontal position to their closed and active vertical position so as to maintain a new initial free end portion of the strip. ( Figures 1 d and 2d).
  • the method and the machine according to the invention preferably apply to a stretchable and self-adhesive film.
  • a straight wrapping is made, that is to say that the strip 6a, 6b extends in a horizontal plane.
  • the wrapping can be sinusoidal, that is to say that on a vertical face 4 of the load, the strip 2 can go up (or go down) then on the neighboring strip go up (or go down) and so on.
  • the invention also relates to a different embodiment in which the holding means 14, cutting 15 and joining 16 as well as their support are placed entirely inside the envelope formed by the coil 2a and its support means 10 pivoting about the axis 11.
  • the holding means 14, cutting 15 and joining 16 as well as their support are placed entirely inside the envelope formed by the coil 2a and its support means 10 pivoting about the axis 11.
  • the sliding means 33 can then be in the form of articulated links.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)

Description

L'invention concerne un procédé et une machine de banderolage automatique d'une charge avec une bande de film en matière plastique dont la largeur est une fraction de la hauteur de la charge à banderoler.The invention relates to a method and an automatic banding machine for a load with a plastic film strip whose width is a fraction of the height of the load to be wrapped.

On connaît déjà (document FR-2 256 871) un procédé et une machine pour emballer une charge comprenant plusieurs paquets élémentaires, consistant à appliquer une ou plusieurs bandes de film en matière plastique à cheval sur deux lits ou piles adjacentes à l'endroit de leur jonction. Une telle machine comporte un support de bobine de film pouvant être déplacé le long d'un cheminement entourant la charge par des moyens d'entraînement, des moyens d'accrochage d'une extrémité de la bande de film, des moyens de jonctionnement des parties extrêmes de la bande pour former un bandeau entourant la charge et des moyens pour opérer un déplacement relatif de la bobine par rapport à la charge afin d'amener la bobine au regard de la zone sur laquelle la bande doit être appliquée.There is already known (document FR-2 256 871) a method and a machine for packaging a load comprising several elementary packages, consisting in applying one or more strips of plastic film astride two adjacent beds or piles at the place of their junction. Such a machine comprises a film reel support which can be moved along a path surrounding the load by drive means, means for hooking one end of the film strip, means for joining the parts. extremities of the strip to form a strip surrounding the load and means for effecting a relative displacement of the spool relative to the load in order to bring the spool to the area on which the strip is to be applied.

On connaît aussi une machine de banderolage automatique d'une charge avec une bande de film en matière plastique dont la largeur est une fraction de la hauteur de la charge à banderoler. Cette machine comporte un bâti, une table de support de charge fixe, des moyens support d'une bobine de film à axe vertical montés pivotants autour d'un axe vertical passant par la table; des moyens d'entraînement à rotatiom des moyens support de bobine et des moyens de coulissement de la bobine dans une direction verticale sur les moyens support. Une telle machine est destinée à réaliser un banderolage hélicoidal. Par contre, elle ne permet pas de réaliser un banderolage par lits, notamment du fait que le maintien de la partie extrême libre initiale de la bande de film n'est pas automatisée.There is also known an automatic banding machine for a load with a strip of plastic film whose width is a fraction of the height of the load to be wrapped. This machine comprises a frame, a fixed load support table, means for supporting a reel of film with a vertical axis pivotally mounted around a vertical axis passing through the table; rotary drive means of the coil support means and means for sliding the coil in a vertical direction on the support means. Such a machine is intended to produce a helical wrapping. On the other hand, it does not make it possible to produce a wrapping by beds, in particular because the maintenance of the initial free end portion of the film strip is not automated.

On connaît enfin (document US-4109 445) une machine de banderolage automatique d'une charge avec une bande de film en matière plastique dont la largeur est une fraction de la hauteur de la charge à banderoler, qui comprend un bâti, une table support de charge, fixe lorsque la machine est en fonctionnement; des moyens support d'une bobine de film à axe vertical, montés pivotants autour d'un axe vertical passant par la table et situés au moins partiellement au-dessus de la table et de la charge à banderoler; des moyens d'entraînement à rotation des moyens support de bobine, et des premiers moyens de coulissement de la bobine dans une direction verticale. Toutefois, ce document ne prévoit pas des moyens de maintien de l'extrémité libre du film, la coupe, la solidarisation du film.Finally, there is known (document US-4109 445) an automatic banding machine for a load with a strip of plastic film whose width is a fraction of the height of the load to be wrapped, which comprises a frame, a support table charging, fixed when the machine is in operation; means for supporting a reel of film with a vertical axis, pivotally mounted about a vertical axis passing through the table and located at least partially above the table and of the load to be wrapped; means for rotating the reel support means, and first means for sliding the reel in a vertical direction. However, this document does not provide means for holding the free end of the film, cutting, securing the film.

L'invention vise à remédier à ces inconvénients et, à cet effet, elle propose une machine à banderolage automatique d'une charge avec une bande de film en matière plastique dont la largeur est une fraction de la hauteur de la charge à banderoler, qui comprend un bâti, une table support de charge, fixe lorsque la machine est en fonctionnement; des moyens support d'une bobine de film à axe généralement vertical, montés pivotants autour d'un axe vertical passant par la table et situés au moins partiellement au-dessus de la table et de la charge à banderoler; des moyens d'entraînement à rotation des moyens support de bobine, des premiers moyens de coulissement de la bobine dans une direction verticale; des moyens de maintien temporaire de la partie extrême libre initiale de la bande de film à proximité ou contre la charge; des moyens de coupe transversale de la bande de film; des moyens de solidarisation de la bande de film, caractérisée par le fait que, en combinaison, en premier lieu elle comporte des seconds moyens de coulissement des moyens de maintien de coupe et de solidarisation, dans une direction verticale comprenant une seconde colonne sur laquelle est montée une console formant chariot, des moyens d'entraînement assurant le déplacement vertical de la console chariot; en deuxième lieu, la partie extrême libre inférieure du tourillon respectivement de la bobine est, en permence, située en dessous ou est coplanaire de l'extrémité libre inférieure de la première colonne qui la supporte et dans une position relative fixe par rapport à celle-ci; et en troisième lieu, l'extrémité libre inférieure du tourillon, respectivement de la bobine est située à un niveau supérieur à celui de la console chariot, en permanence.The invention aims to remedy these drawbacks and, to this end, it provides an automatic banding machine for a load with a strip of plastic film whose width is a fraction of the height of the load to be wrapped, which includes a frame, a load support table, fixed when the machine is in operation; means for supporting a film reel with a generally vertical axis, pivotally mounted about a vertical axis passing through the table and located at least partially above the table and of the load to be wrapped; means for rotating the reel support means, first means for sliding the reel in a vertical direction; means for temporarily holding the initial free end part of the film strip close to or against the load; means for cross-cutting the film strip; means for securing the film strip, characterized in that, in combination, in the first place it comprises second means for sliding cutting and securing means, in a vertical direction comprising a second column on which is mounted a carriage console, drive means ensuring the vertical movement of the carriage console; secondly, the lower free end portion of the spool respectively of the coil is, in permence, located below or is coplanar with the lower free end of the first column which supports it and in a fixed relative position with respect to it this; and thirdly, the lower free end of the trunnion, respectively of the coil, is located at a level higher than that of the carriage console, permanently.

Le procédé de banderolage mettant en oeuvre la machine selon l'invention comporte les étapes suivantes: on amène la charge sur la table, on monte une bobine de film sur les moyens support prévus à cet effet, on maintient la partie extrême libre initiale de la bande film à proximité ou contre la charge grâce aux moyens de maintien, on fait pivoter les moyens support de bobine autour de leur axe vertical, grâce aux moyens d'entraînement, jusqu'à recouvrir la partie extrême libre de la bobine et on réalise le nombre de couches de bande souhaité, on désengage les moyens de maintien de la partie extrême libre initiale, on coupe transversalement le film, on solidarise la partie extrême libre terminale du film au bandeau de film se trouvant sur la charge, ce qui permet de réaliser ainsi un banderolage élémentaire sur une tranche de la charge, on récupère une nouvelle partie extrême libre de film, on déplace de façon synchronisée la bobine de film et les moyens de maintien d'un pas dans le sens vertical pour pouvoir réaliser un autre banderolage élémentaire sur une autre tranche de la charge.The wrapping process using the machine according to the invention comprises the following steps: the load is brought to the table, a film reel is mounted on the support means provided for this purpose, the initial extreme free part of the film strip near or against the load thanks to the holding means, the reel support means are pivoted about their vertical axis, thanks to the drive means, until covering the free end of the reel and the desired number of strip layers, the means for retaining the initial free end are disengaged, the film is cut transversely, the end free end part of the film is secured to the film strip on the load, which makes it possible to produce thus an elementary wrapping on a slice of the load, a new free extreme part of film is recovered, the film reel and the means for maintaining a step in the sen are moved synchronously s vertical to be able to carry out another elementary wrapping on another part of the load.

D'autres caractéristiques de l'invention seront mieux comprises grâce à la description qui suivra en référence aux dessins annexés dans lesquels:

  • Les figures 1a, 1b, 1c, 1d, 1e, d'une part, 2a, 2b, 2c, 2d, 2e, d'autre part, sont cinq vues schématiques en élévation et de dessus du procédé de banderolage selon l'invention.
  • La figure 3 est une vue schématique en perspective de la machine selon l'invention.
  • Les figures 4 et 5 sont deux vues respectivement de dessus et en élévation de la machine représentée sur la figure 3.
  • Les figures 6 et 7 sont deux vues schématiques en perspectives, partielles, à plus grande échelle, de détails de réalisation de l'invention de la machine selon l'invention.
  • La figure 8 illustre une charge à banderoler grâce au procédé ou à la machine selon' l'invention.
Other characteristics of the invention will be better understood from the description which follows with reference to the accompanying drawings in which:
  • Figures 1a, 1b, 1c, 1d, 1e, on the one hand, 2a, 2b, 2c, 2d, 2e, on the other hand, are five schematic views in elevation and from above of the wrapping process according to the invention.
  • Figure 3 is a schematic view in perspective of the machine according to the invention.
  • Figures 4 and 5 are two views respectively from above and in elevation of the machine shown in Figure 3.
  • Figures 6 and 7 are two schematic perspective views, partial, on a larger scale, of details of embodiment of the invention of the machine according to the invention.
  • FIG. 8 illustrates a load to be wrapped using the method or the machine according to the invention.

L'invention concerne un procédé et une machine de banderolage automatique d'une charge 1 avec une bande de film 2 en matière plastique.The invention relates to a method and an automatic wrapping machine for a load 1 with a plastic film strip 2.

La charge 1 est préférentiellement une charge portée par une palette 3, ayant une forme générale parallélépipèdique comportant un fond horizontal reposant sur la palette 3, quatre faces verticales 4 et une face horizontale supérieure 5.The load 1 is preferably a load carried by a pallet 3, having a generally parallelepiped shape having a horizontal bottom resting on the pallet 3, four vertical faces 4 and an upper horizontal face 5.

Le procédé et la machine selon l'invention visent à appliquer sur les faces verticales 4 de la charge 1 des bandeaux 6a, 6b ... (figure 8) placés à divers endroits de la charge, écartés l'un de l'autre d'une distance t constituant le pas de banderolage.The method and the machine according to the invention aim to apply to the vertical faces 4 of the load 1 strips 6a, 6b ... (Figure 8) placed at various locations of the load, spaced from each other d 'a distance t constituting the wrapping step.

Un bandeau tel que 6a, 6b est désigné par la suite comme un banderolage élémentaire. Le procédé et la machine s'appliquent à la réalisation d'au moins un et généralement plusieurs banderolages élémentaires, le pas étant constant ou non.A strip such as 6a, 6b is designated subsequently as an elementary wrapping. The method and the machine apply to the production of at least one and generally several elementary wrapping, the pitch being constant or not.

Généralement, la bande de film 2 a une largeur qui est une fraction de la hauteur de la charge 1, c'est-à-dire qu'un bandeau tel que 6a, 6b ne recouvre qu'une partie seulement de la hauteur de la charge 1. Le cas échéant, la bande 2 peut être de faible largeur, le banderolage réalisé étant alors un cerclage.Generally, the film strip 2 has a width which is a fraction of the height of the load 1, that is to say that a strip such as 6a, 6b covers only part of the height of the load 1. If necessary, the strip 2 may be of small width, the wrapping carried out then being a strapping.

On se réfère maintenant aux figures 3 à 7 qui illustrent une machine 7 de banderolage automatique d'une charge telle que 1 avec une bande 2.Reference is now made to FIGS. 3 to 7 which illustrate a machine 7 for automatically wrapping a load such as 1 with a strip 2.

La machine 7 comporte un bâti 8; une table 9 pour supporter la charge 1, en position fixe lorsque la machine est en fonctionnement; des moyens support 10 d'une bobine de film 2a d'où provient la bande 2, cette bobine 2a étant à axe généralement vertical et les moyens de support 10 étant montés pivotants autour d'un axe vertical 11 passant par la table 9, les moyens support 10 étant situés au moins partiellement au-dessus de la table 9 et de la charge 1 qu'elle supporte; des moyens d'entraînement à rotation 12 des moyens support 10; des premiers moyens de coulissement 13 de la bobine 2a dans une direction verticale; des moyens de maintien temporaire 14 de la partie extrême libre initiale a de la bande de film 2 à proxinité ou contre la charge 1; des moyens de coupe transversale 15 de la bande de film 2; et des moyens de solidarisation 16 de la partie extrême libre terminale b de la bande 2 avec un bandeau 6a, 6b se trouvant déjà sur la charge.The machine 7 has a frame 8; a table 9 for supporting the load 1, in a fixed position when the machine is in operation; support means 10 for a film reel 2a from which the strip 2 originates, this reel 2a having a generally vertical axis and the support means 10 being pivotally mounted about a vertical axis 11 passing through the table 9, the support means 10 being located at least partially above the table 9 and the load 1 that it supports; rotation drive means 12 support means 10; first sliding means 13 for the coil 2a in a vertical direction; temporary holding means 14 of the initial free end portion a of the film strip 2 near or against the load 1; means for cross-cutting 15 of the film strip 2; and means 16 for securing the end free end portion b of the strip 2 with a strip 6a, 6b already on the load.

Le bâti 8 comporte une embase 17 reposant au sol, des montants verticaux 18 et un toit horizontal supérieur 19 comportant des longerons, traverses, plaques ou similaires. Le bâti 8 comporte en outre deux longerons horizontaux 20 portés par des pieds 21 supportant des rouleaux 22 constituant, d'une part, la table 9 et de part et d'autre un convoyeur d'amenée 23a et un convoyeur d'évacuation 23b de la charge respectivement avant et après banderolage. Des moyens non représentés tels qu'un moteur permettent d'entraîner les rouleaux 22 ou encore de les maintenir fixes de manière que la charge soit maintenue immobile pendant le fonctionnement de la machine.The frame 8 comprises a base 17 resting on the ground, vertical uprights 18 and an upper horizontal roof 19 comprising longitudinal members, crosspieces, plates or the like. The frame 8 further comprises two horizontal beams 20 carried by feet 21 supporting rollers 22 constituting, on the one hand, the table 9 and on both sides a supply conveyor 23a and an evacuation conveyor 23b of the load respectively before and after wrapping. Means not shown, such as a motor, make it possible to drive the rollers 22 or to keep them fixed so that the load is kept stationary during the operation of the machine.

Les moyens support 10 comportent une première colonne verticale 24 portée à la partie extrême d'un bras horizontal 25 monté pivotant sur le toit 19 autour de l'axe 11. Dans la forme d'exécution représentée, l'axe 11 se trouve dans la partie médiane du bras 25 qui, d'un côté, supporte la première colonne 24 et, de l'autre côté, forme un contrepoids 26. L'écartement entre l'axe 11 et la première colonne 24 est tel qu'en pivotant autour de l'axe 11, la première colonne 24 enveloppe la charge 1.The support means 10 comprise a first vertical column 24 carried at the end of a horizontal arm 25 pivotally mounted on the roof 19 around the axis 11. In the embodiment shown, the axis 11 is located in the middle part of the arm 25 which, on one side, supports the first column 24 and, on the other side, forms a counterweight 26. The spacing between the axis 11 and the first column 24 is such that by pivoting around of axis 11, the first column 24 envelops the load 1.

Les moyens d'entraînement 12 sont constitués par exemple par un moteur ou un moto-réducteur d'axe 11 porté par le toit 19 au-dessus de celui-ci.The drive means 12 are constituted for example by a motor or a geared motor with an axis 11 carried by the roof 19 above the latter.

Les moyens de maintien 14 comportent deux petits mors de pince 27a, 27b dirigés verticalement et vers le haut à l'état fermé de maintien et horizontalement à l'état ouvert sans maintien. Les deux mors 27a, 27b sont articulés à leur partie inférieue autour d'axes 28 chacun horizontal et transversal (c'est-à-dire s'étendant parallèlement aux axes des rouleaux 22). Ces mors 27a, 27b sont portés à leur partie inférieure par une console 29, disposée horizontalement et transversalement et portée par le bâti 8, de manière que les mors 27a, 27b soient situés à proximité immédiate de la table 9, notamment du longeron 20 correspondant.The holding means 14 comprise two small clamp jaws 27a, 27b directed vertically and upwards in the closed holding state and horizontally in the open state without holding. The two jaws 27a, 27b are articulated at their lower part around axes 28 each horizontal and transverse (that is to say extending parallel to the axes of the rollers 22). These jaws 27a, 27b are carried at their lower part by a console 29, arranged horizontally and transversely and carried by the frame 8, so that the jaws 27a, 27b are located in the immediate vicinity of the table 9, in particular of the corresponding spar 20 .

Les moyens de coupe 15 et de solidarisation 16 se présentent sous la forme de deux grands mors de pince 30a, 30b portés par la console 29 devant les mors 27a, 27b, c'est-à-dire à proximité encore plus immédiate de la table 9. Les mors 30a, 30b sont également mobiles autour des axes 28. L'un des mors comporte une bavette élastiquement déformable 31 dirigée vers la table 9 susceptible de venir appliquer la bande de film 2 contre lui-même, constituant les moyens de solidarisation 16, le film étant auto-collant.The cutting means 15 and securing 16 are in the form of two large gripper jaws 30a, 30b carried by the console 29 in front of the jaws 27a, 27b, that is to say in even more immediate proximity to the table 9. The jaws 30a, 30b are also movable around the axes 28. One of the jaws comprises an elastically deformable flap 31 directed towards the table 9 capable of coming to apply the strip of film 2 against itself, constituting the fastening means 16, the film being self-adhesive.

Les mors 30a, 30b sont à l'état actif verticaux dirigés vers le haut et fermés et, au contraire, à l'état inactif dirigés horizontalement.The jaws 30a, 30b are in the active state vertical directed upwards and closed and, on the contrary, in the inactive state directed horizontally.

Naturellement, la machine comporte des moyens de commande électriques, pneumatiques ou autres des mors 27a, 27b, 30a, 30b.Naturally, the machine includes electrical, pneumatic or other control means for the jaws 27a, 27b, 30a, 30b.

Ainsi que cela résulte des figures, les moyens support 10, notamment la première colonne 24 et la bobine 2a en pivotement, enveloppent les mors 27a, 27b, 30a, 30b qui sont à proximité immédiate ou quasi-immédiate de la charge 1, notamment d'une face verticale de référence 4a de celle-ci.As is apparent from the figures, the support means 10, in particular the first column 24 and the coil 2a in pivoting, envelop the jaws 27a, 27b, 30a, 30b which are in the immediate or almost immediate proximity of the load 1, in particular a vertical reference face 4a thereof.

La machine 7 peut enfin comporter un presseur 32 porté par le toit 19, en dessous de lui et à l'aplomb de la table 9, commandé à coulissement vertical de manière à pouvoir venir s'appliquer sur la face horizontale supérieure 5 de la charge 1 et renforcer son maintien pendant le banderolage.The machine 7 may finally comprise a presser 32 carried by the roof 19, below it and directly above the table 9, controlled by vertical sliding so as to be able to come to be applied on the upper horizontal face 5 of the load 1 and strengthen its hold during the wrapping.

Selon l'invention, la machine 7 comporte également des seconds moyens de coulissement 33 des moyens de maintien 14, de coupe 15 et de solidarisation 16, dans une direction verticale.According to the invention, the machine 7 also comprises second sliding means 33 of the holding means 14, cutting 15 and securing 16, in a vertical direction.

Les premiers et seconds moyens de coulissement 13, 33 comportent respectivement, d'une part, des moyens de guidage et, d'autre part, des moyens d'entraînement.The first and second sliding means 13, 33 respectively comprise, on the one hand, guide means and, on the other hand, drive means.

La machine 7 comporte également des moyens de synchronisation non représentés, des premiers et seconds moyens d'entraînement, appartenant aux moyens de coulissement 13, 33, de manière que les moyens de maintien 14, de coupe 15 et de solidarisation 16 soient placés substantiellement en regard de la bobine 2a au début et à la fin de chaque banderolage élémentaire, au moins.The machine 7 also includes synchronization means, not shown, first and second drive means, belonging to the sliding means 13, 33, so that the holding means 14, cutting 15 and securing 16 are placed substantially in look of the coil 2a at the beginning and at the end of each elementary wrapping, at least.

Enfin, la machine 7 comporte des moyens de commande non représentés de ces moyens d'entraînement de la bobine 2a et des moyens de maintien 14 de coupe 15 et de solidarisation 16'de manière que la bobine 2a et ces moyens 14, 15, 16, soient déplacés d'un pas de banderolage entre chaque cycle de banderolage élémentaire et le cycle suivant.Finally, the machine 7 comprises control means, not shown, of these means for driving the coil 2a and means for holding 14 the cut 15 and the connection 16 ′ so that the coil 2a and these means 14, 15, 16 , are moved by one wrapping step between each elementary wrapping cycle and the following cycle.

Ces moyens de synchronisation et de commande peuvent être à fonctionnement électrique, pneumatique ou autre, à la portée de l'homme de métier et reliés à un pupitre central 34.These synchronization and control means can be electrically, pneumatically or otherwise, within the reach of those skilled in the art and connected to a central console 34.

Les premiers moyens de coulissement 13 sont tels que le tourillon 2c supportant la bobine se trouve dans une position relative fixe par rapport à la partie extrême libre inférieure qui le supporte de la première colonne 24, et ce préférentiellement.The first sliding means 13 are such that the pin 2c supporting the coil is in a fixed relative position relative to the lower free end portion which supports it from the first column 24, and this preferably.

Dans une première forme d'exécution, les moyens support 10 sont agencés de manière que la longueur de première colonne 24 comprise entre le bras support 25 et la partie extrême libre inférieure 35 soit variable, le bras support 25 restant alors en principe dans un plan horizontal fixe. Dans une première variante de réalisation de cette première forme d'exécution correspondant à l'exemple illustré par la figure, la première colonne 24 est télescopique et comporte, par exemple, trois tronçons: un tronçon supérieur 24a attenant au bras 25, un tronçon médian 24b et un tronçon inférieur 24c supportant le tourillon 2c.In a first embodiment, the support means 10 are arranged so that the length of the first column 24 between the support arm 25 and the lower free end portion 35 is variable, the support arm 25 then remaining in principle in a plane horizontal fixed. In a first alternative embodiment of this first embodiment corresponding to the example illustrated in the figure, the first column 24 is telescopic and comprises, for example, three sections: an upper section 24a adjoining the arm 25, a middle section 24b and a lower section 24c supporting the pin 2c.

Dans une seconde variante de cette première forme d'exécution (non représentée), la première colonne 24 est rigide et indéformable (donc non télescopique) mais elle est montée sur le bras 25 de manière à pouvoir être déplacée verticalement par rapport à ce bras. Dans ce cas, la première colonne 24 peut comporter une crémaillère engrenant un pignon moteur porté par le bras 25.In a second variant of this first embodiment (not shown), the first column 24 is rigid and non-deformable (therefore non-telescopic) but it is mounted on the arm 25 so that it can be moved vertically relative to this arm. In this case, the first column 24 may include a rack meshing with a driving pinion carried by the arm 25.

Dans la première variante préférentielle décrite, les premiers moyens de coulissement 13 sont donc constitués par la première colonne 24 télescopique et par des moyens d'entraînement linéaire réciproques 36 représentés schématiquement, électriques ou pneumatiques.In the first preferred variant described, the first sliding means 13 are therefore constituted by the first telescopic column 24 and by reciprocal linear drive means 36 shown diagrammatically, electric or pneumatic.

Dans une seconde forme d'exécution, non représentée, les moyens support 10 sont agencés de manière que la longueur de colonne comprise entre le bras 25 et la partie extrême libre inférieure 35 reste fixe ou généralement fixe, le plan horizontal de déplacement du bras 25 étant mobile verticalement. Dans ce cas, les premiers moyens de coulissement 13 sont constitués par les moyens de coulissement du bras 25.In a second embodiment, not shown, the support means 10 are arranged so that the column length between the arm 25 and the lower free end portion 35 remains fixed or generally fixed, the horizontal plane of movement of the arm 25 being vertically movable. In this case, the first sliding means 13 are constituted by the sliding means of the arm 25.

Enfin, il est clair que la première et la seconde forme d'exécution peuvent être combinées l'une avec l'autre, la première colonne 24 étant, par exemple, télescopique tandis que le tronçon supérieur 24a est lui-même monté coulissant par rapport au bras 25 qui est lui aussi monté coulissant verticalement. Cette disposition peut s'avérer utile dans le cas de charge de grande hauteur.Finally, it is clear that the first and the second embodiment can be combined with each other, the first column 24 being, for example, telescopic while the upper section 24a is itself mounted to slide relative to to the arm 25 which is also mounted sliding vertically. This arrangement can be useful in the case of loads of great height.

Comme on l'a compris, les premiers moyens de coulissement 13 sont tels que la bobine 2a soit en permanence située à la partie extrême inférieure 35 de la première colonne 24 et ce, quelle que soit la position en hauteur de la bobine 2a. De plus, et préférentiellement, le tourillon 2c, respectivement la bobine 2a, a son extrémité libre inférieure qui, en permanence, saille en dessous ou est coplanaire de l'extrémité libre inférieure 37 de la première colonne 24. Il en résulte que lorsque la bobine 2a est mise en mouvement autour de l'axe 11 par les moyens d'entraînement 12, l'espace situé en dessous de l'extrémité libre de la bobine 2a est totalement libéré. Cette disposition est importante, puisque les moyens de maintien 14, de coupe 15 et de solidarisation 16 doivent être placés substantiellement en regard de la bobine 2a mais qu'il convient d'éviter qu'ils interfèrent avec les moyens support 10.As has been understood, the first sliding means 13 are such that the coil 2a is permanently located at the lower end portion 35 of the first column 24, regardless of the height position of the coil 2a. In addition, and preferably, the pin 2c, respectively the coil 2a, has its lower free end which, permanently, projects below or is coplanar with the lower free end 37 of the first column 24. It follows that when the coil 2a is set in motion around the axis 11 by the drive means 12, the space below the free end of the coil 2a is completely freed. This provision is important, since the holding means 14, cutting 15 and securing 16 must be placed substantially opposite the coil 2a but it should be avoided that they interfere with the support means 10.

Les seconds moyens de coulissement 33 comportent une seconde colonne 38, fixe, sur laquelle est montée la console 39 qui forme chariot, des moyens d'entraînement assurant le déplacement vertical de la console chariot 29, donc des moyens de maintien 14 de coupe 15 et de solidarisation 16 qu'elle supporte.The second sliding means 33 comprise a second column 38, fixed, on which is mounted the console 39 which forms a carriage, drive means ensuring the vertical movement of the carriage console 29, therefore means for holding 14 cutting 15 and of securing 16 that it supports.

Dans une première variante (non représentée), la seconde colonne 38 est télescopique, la console chariot 29 occupant à l'extrémité inférieure de celle-ci une position fixe. Dans une seconde variante (figures 5 et 7), la console chariot 29 est montée à coulissement vertical sur la seconde colonne 38 qui forme glissière et n'est donc pas déformable.In a first variant (not shown), the second column 38 is telescopic, the carriage console 29 occupying at the lower end thereof a fixed position. In a second variant (Figures 5 and 7), the carriage console 29 is mounted to slide vertically on the second column 38 which forms a slide and is therefore not deformable.

Enfin, dans une troisième variante non représentée, la seconde colonne 38 est également rigide et indéformable et supporte la console chariot 29 de façon fixe, l'ensemble de la colonne 38 étant monté coulissant verticalement.Finally, in a third variant not shown, the second column 38 is also rigid and non-deformable and supports the carriage console 29 in a fixed manner, the whole of the column 38 being mounted to slide vertically.

On comprend que, dans tous les cas, l'essentiel soit que la console chariot 29 soit montée mobile verticalement de manière à avoir un déplacement vertical synchronisé avec celui de la bobine 2a.We understand that, in all cases, the essential either that the carriage console 29 is mounted movable vertically so as to have a vertical displacement synchronized with that of the coil 2a.

Pour éviter toute interférence entre la bobine en déplacement et la console chariot 29, l'extrémité libre inférieure du tourillon 2c, respectivement de la bobine 2a, est située à un niveau, légèrement supérieur à celui de la console chariot 29 et ce en permanence.To avoid any interference between the moving coil and the carriage console 29, the lower free end of the journal 2c, respectively of the coil 2a, is located at a level, slightly higher than that of the carriage console 29 and this permanently.

Il va de soi que l'invention n'est pas limitée aux modes de réalisation qui viennent d'être décrits en ce qui concerne le coulissement vertical de la bobine 2a et de la console chariot 29.It goes without saying that the invention is not limited to the embodiments which have just been described with regard to the vertical sliding of the coil 2a and of the carriage console 29.

L'invention concerne également un procédé de banderolage utilisant la machine qui vient d'être décrite. Dans ce procédé, on amène la charge 1 sur la table 9. La charge 1 est maintenue immobile, la table 9 l'étant. De plus, ce maintien peut être renforcé grâce au presseur 32. Dans cette situation, on monte une bobine de film 2a sur les moyens support 10. La bobine de film 2a est alors à proximité des moyens de maintien 14, de coupe 15 et de solidarisation 16, légèrement au-dessus de la console chariot 29 (figures la et 2a). On maintient alors la partie extrême libre initiale a de la bande de film 2 issue de la bobine 2a à proximité ou contre la face verticale de référence 4a de la charge 1, les moyens de maintien 14 étant actifs, donc dirigés verticalement et vers le haut. Les moyens de coupe 15 et de solidarisation 16 sont inactifs, donc horizontaux et situés à un niveau inférieur à celui de la bande 2.The invention also relates to a wrapping method using the machine which has just been described. In this process, the load 1 is brought to the table 9. The load 1 is kept stationary, the table 9 being so. In addition, this support can be reinforced by the presser 32. In this situation, a film reel 2a is mounted on the support means 10. The film reel 2a is then close to the holding means 14, cutting 15 and securing 16, slightly above the carriage console 29 (Figures la and 2a). The initial free end portion a of the film strip 2 coming from the reel 2a is then maintained near or against the vertical reference face 4a of the load 1, the holding means 14 being active, therefore directed vertically and upwards. . The cutting means 15 and securing means 16 are inactive, therefore horizontal and located at a level lower than that of the strip 2.

On peut alors faire pivoter les moyens support 10 de bobine 2a grâce aux moyens d'entraînement 12, tout en maintenant la partie extrême libre initiale a de bande. Au bout d'un tour, la bande vient recouvrir la partie extrême libre initiale a de la bande (figures 1b et 2b). On réalise ensuite le nombre de tours donc de couches de bande souhaité.The support means 10 for the coil 2a can then be pivoted using the drive means 12, while maintaining the initial free end portion a of the strip. At the end of a revolution, the strip covers the initial free end part a of the strip (FIGS. 1b and 2b). The number of turns of the strip of tape is therefore carried out.

On désengage alors les moyens de maintien 14 de la partie extrême libre initiale a de bande en faisant pivoter les mors 27a, 27b vers le bas autour des axes 28, jusqu'à l'horizontale (figures 1 c et 2c).The retaining means 14 are then disengaged from the initial free end portion a of the strip by pivoting the jaws 27a, 27b downwards around the axes 28, as far as horizontal (FIGS. 1 c and 2 c).

Puis, on coupe transversalement le film et on solidarise la partie extrême libre terminale de celui-ci au bandeau se trouvant déjà sur la charge. A cet effet, on met en oeuvre les moyens de coupe et de solidarisation 15, 16. Plus précisément, on fait pivoter les mors 30a, 30b autour des axes 28 depuis leur position horizontale où ils sont inactifs jusqu'à leur position verticale dirigée vers le haut. Les dents de coupe dont sont pourvus les mors 30a, 30b, réalisent la coupe transversale tandis que la bavette 31 vient appliquer la bande de film sur elle-mème ce qui, compte tenu de son caractère autocollant, réalise la solidarisation. En variante, la solidarisation est réalisée par un soudage séparé. Simultanément, les moyens de maintien 14 sont rendus actifs, c'est-à-dire que les mors 27a, 27b sont pivotés depuis leur position horizontale inactive vers leur position verticale fermée et active de manière à maintenir une nouvelle partie extrême libre initiale de bande (figures 1 d et 2d).Then, the film is cut transversely and the end free end portion of the latter is secured to the strip already on the load. To this end, the cutting and securing means 15, 16 are used. More specifically, the jaws 30a, 30b are pivoted around the axes 28 from their horizontal position where they are inactive to their vertical position directed towards the top. The cutting teeth with which the jaws 30a, 30b are provided, carry out the cross-section while the flap 31 comes to apply the strip of film to itself which, taking into account its self-adhesive character, achieves the joining. Alternatively, the connection is made by separate welding. Simultaneously, the holding means 14 are made active, that is to say that the jaws 27a, 27b are pivoted from their inactive horizontal position to their closed and active vertical position so as to maintain a new initial free end portion of the strip. (Figures 1 d and 2d).

On a ainsi réalisé un banderolage élémentaire sur une tranche de la charge.An elementary wrapping was thus carried out on a portion of the load.

On déplace alors de façon synchronisée la bobine de film 2a et les moyens de maintien 14 pour réaliser un autre banderolage élémentaire sur une autre tranche de la charge. (Figures 1e et 2e).The film reel 2a and the holding means 14 are then moved synchronously to produce another elementary wrapping on another portion of the load. (Figures 1e and 2e).

Le procédé et la machine selon l'invention s'appliquent préférentiellement à un film étirable et auto-collant.The method and the machine according to the invention preferably apply to a stretchable and self-adhesive film.

Dans l'exemple qui vient d'être décrit, on réalise un banderolage droit, c'est-à-dire que le bandeau 6a, 6b s'étend dans un plan horizontal. En variante, le banderolage peut être sinusoïdal, c'est-à-dire que sur une face verticale 4 de la charge, la bande 2 peut monter (ou descendre) puis sur la bande voisine monter (ou descendre) et ainsi de suite.In the example which has just been described, a straight wrapping is made, that is to say that the strip 6a, 6b extends in a horizontal plane. As a variant, the wrapping can be sinusoidal, that is to say that on a vertical face 4 of the load, the strip 2 can go up (or go down) then on the neighboring strip go up (or go down) and so on.

L'invention concerne également une forme de réalisation différente dans laquelle les moyens de maintien 14, de coupe 15 et de solidarisation 16 ainsi que leur support sont placés en totalité à l'intérieur de l'enveloppe formée par la bobine 2a et ses moyens supports 10 pivotant autour de l'axe 11. Dans ce cas, il n'y a plus de problème d'interférence comme mentionné plus haut ce qui permet d'avoir une première colonne 24 rigide et non télescopique et un tourillon 2c coulissant le long de celle-ci. Les moyens de coulissement 33 peuvent alors se présenter sous la forme de biellettes articulées.The invention also relates to a different embodiment in which the holding means 14, cutting 15 and joining 16 as well as their support are placed entirely inside the envelope formed by the coil 2a and its support means 10 pivoting about the axis 11. In this case, there is no longer any interference problem as mentioned above, which makes it possible to have a first rigid, non-telescopic column 24 and a journal 2c sliding along this one. The sliding means 33 can then be in the form of articulated links.

Claims (11)

1. Machine for the automatic banding of a load with a plastic film strip, the width of which is a fraction of the height of the load to be banded, the said machine comprising a frame (8), a load- supporting table (9) stationary when the machine is in operation; means (10) for supporting a film reel (2a) of generally vertical axis, which are mounted pivotally about a vertical axle (11) passing through the table (9) and which are arranged at least partially above the table (9) and the load (1) to be banded; means (12) for driving in rotation the means (10) for supporting the reel (2a), first means (13) for sliding the reel (2a) in the vertical direction; means (14) for temporarily retaining the initial free end part of the film strip (2) near or against the load (1); means (15) for the transverse cutting of the film strip (2); and means (16) for fixing together the film strip (2), characterized in that, in combination, in the first place it possesses second means (33) for sliding the retaining, cutting and fixing means (14,15,16) in a vertical direction, comprising a second column (38) on which a stay (29) forming a carriage is mounted, drive means ensuring the vertical movement of the carriage stay (29); in the second place the lover free end part of the journal (2c) or of the reel (2a) is permanently located underneath or is coplanar with the lover free end (37) of the first column (24) supporting it and in a fixed relative position in relation to this; and in the third place the lover free end of the journal (2c) or of the reel (2a) is permanently located at a level higher than that of the carriage stay (29).
2. Machine according to Claim 1, characterized in that it possesses means for synchronising the means for the sliding drive of the reel (2a) and the retaining, cutting and fixing means (14,16, 16), in such a way that the retaining, cutting and fixing means (14,15,16) are located substantially opposite the reel (2a) at the start and end of each elementary banding cycle.
3. Machine according to either one of Claims 1 and 2, characterized in that it possesses means for controlling, means for the sliding drive of the reel (2a) and the retaining, cutting and fixing means (14,15,16), in such a way that the reel (2a) and the retaining, cutting and fixing means (14, 15,16) are moved one step between each elementary cycle and the folloving elementary cycle.
4. Machine according to any one of Claims 1 to 3, characterized in that the supporting means (10) are designed in such a way that the length of the first column (24) located between the supporting arm (25) and its lover free end part (35) is variable, the supporting arm (25) then generally remaining in a fixed horizontal plane.
5. Machine according to Claim 4 characterized in that the first column (24) is non-deformable and is mounted on the arm (25) in such a way that it can be moved vertically in relation to the arm (25).
6. Machine according to Claim 4, characterized in that the first column (24) is telescopic and has mutual linear drive means (36).
7. Machine according to any one of Claims 1 to 3, characterized in that the supporting means (10) are designed in such a way that the length of the first column (24) located between the arm (25) and its lover free end part (35) is fixed, the horizontal plane of movement of the supporting arm (25) being vertically movable.
8. Machine according to any one of Claims 1 to 7, characterized in that the second column (38) is telescopic.
9. Machine according to any one of Claims 1 to 7, characterized in that the carriage stay (29) is mounted in a vertically slidable manner on the second column (38) which is itself stationary.
10. Machine according to any one of Claims 1 to 7, characterized in that the second column (38) is mounted so as to be vertically slidable as a whole, the carriage stay (29) being stationary in relation to this.
11. Machine according to any one of Claims 1 to 7, characterized in that the retaining means (14) comprise two jaws (27a, 27b) articulated in their lover part about an axle (28).
EP19850401877 1984-09-25 1985-09-25 Method and machine for automatically banding a load with a plastic film strip Expired EP0177413B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8414752A FR2570675B1 (en) 1984-09-25 1984-09-25 METHOD AND MACHINE FOR AUTOMATICALLY BANDEROLING A LOAD WITH A PLASTIC FILM STRIP
FR8414752 1984-09-25

Publications (2)

Publication Number Publication Date
EP0177413A1 EP0177413A1 (en) 1986-04-09
EP0177413B1 true EP0177413B1 (en) 1989-01-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850401877 Expired EP0177413B1 (en) 1984-09-25 1985-09-25 Method and machine for automatically banding a load with a plastic film strip

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EP (1) EP0177413B1 (en)
DE (1) DE3567190D1 (en)
FR (1) FR2570675B1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5195297A (en) * 1980-02-27 1993-03-23 Lantech, Inc. Unitized display packages and method and apparatus for utilizing display packages
FR2650556B1 (en) * 1989-08-02 1991-12-13 Newtec Int METHOD AND MACHINE FOR BANDEROLING A PALLETIZED LOAD
US5203136A (en) * 1989-09-06 1993-04-20 Newtec International (Societe Anonyme) Film unwinding carriage for a packaging machine
FR2651481B1 (en) * 1989-09-06 1991-12-20 Newtec Int FILM RELEASE TROLLEY FOR PACKAGING MACHINE.
FR2669002B1 (en) * 1990-11-09 1994-10-28 Newtec Int METHOD, MACHINE AND INSTALLATION FOR PACKAGING A LOAD PROVIDED WITH AT LEAST ONE HINGE PROTECTION HINGE; DEVICE FOR SEIZING, MOVING, DEPOSITING AND HOLDING SUCH A CORNER.
FR2670747B1 (en) * 1990-12-21 1993-09-10 Newtec Int INSTALLATION FOR OVERPACKING PALLETIZED LOADS WITH PLASTIC COVERING STRIP AND METHOD FOR IMPLEMENTING SUCH AN INSTALLATION.
US5588287A (en) * 1994-11-10 1996-12-31 Lantech, Inc. Wrapping apparatus with barrier
CA2251407A1 (en) * 1998-11-06 2000-05-06 Wulftec International Cut/wipe and elevating clamp devices
FR2842503B1 (en) * 2002-07-17 2005-01-14 Itw Mima Systems WRAPPING

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2256871A1 (en) * 1974-01-07 1975-08-01 Applic Thermiques Method of packaging small objects as one assembly - uses plastic strips stretched around junctions between layers
US4109445A (en) * 1977-07-26 1978-08-29 Shulman Michael H Overhead load-wrapping apparatus
US4282700A (en) * 1979-04-12 1981-08-11 Joseph Goldstein Stretch wrapper for palletized load

Also Published As

Publication number Publication date
DE3567190D1 (en) 1989-02-09
EP0177413A1 (en) 1986-04-09
FR2570675A1 (en) 1986-03-28
FR2570675B1 (en) 1987-01-02

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