EP3526025B1 - Device and method for removing a formed box from a mandrel - Google Patents

Device and method for removing a formed box from a mandrel Download PDF

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Publication number
EP3526025B1
EP3526025B1 EP17792124.4A EP17792124A EP3526025B1 EP 3526025 B1 EP3526025 B1 EP 3526025B1 EP 17792124 A EP17792124 A EP 17792124A EP 3526025 B1 EP3526025 B1 EP 3526025B1
Authority
EP
European Patent Office
Prior art keywords
box
chuck
panels
flaps
face
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.)
Active
Application number
EP17792124.4A
Other languages
German (de)
French (fr)
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EP3526025A1 (en
Inventor
Didier Desertot
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.)
DS Smith Packaging France SAS
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DS Smith Packaging France SAS
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Publication date
Application filed by DS Smith Packaging France SAS filed Critical DS Smith Packaging France SAS
Publication of EP3526025A1 publication Critical patent/EP3526025A1/en
Application granted granted Critical
Publication of EP3526025B1 publication Critical patent/EP3526025B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms
    • B31B50/282—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms involving stripping-off formed boxes from mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B31B2100/002—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed
    • B31B2100/0022—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed made from tubular webs or blanks, including by tube or bottom forming operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2110/00—Shape of rigid or semi-rigid containers
    • B31B2110/30—Shape of rigid or semi-rigid containers having a polygonal cross section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/06—Feeding sheets or blanks from stacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/07—Feeding sheets or blanks by air pressure or suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms

Definitions

  • the present invention relates to a device for extracting a box or part of a box with a polygonal section from a mandrel on which it has been previously formed from a blank of sheet material.
  • It also relates to a method for extracting a box or part of a box with a polygonal section from a mandrel.
  • Such a blank of sheet material conventionally comprises a series of at least three flaps, namely two end flaps located on either side of at least one intermediate flap, said flaps being connected to each other by lines of parallel folding and provided with side flaps, respectively connected to said flaps by fold lines perpendicular to the fold lines connecting said flaps, the free edge of one of the end flaps being provided with a tongue connected to said end flap by a fold line parallel to the fold lines connecting said flaps.
  • the blank has three flaps, it makes it possible to obtain part of a box (lid or bottom). When it has at least four parts, it makes it possible to obtain a box.
  • the flaps are wound around a mandrel with a polygonal section, the outer cross section of which corresponds to the inner cross section of the box or part of the box to be obtained, the tongue is fixed against the free edge of the other end flap in bearing on the upper face of the mandrel, and the flaps located on the same side of said flaps and some of which include an adhesive are folded back against a corresponding end face of the mandrel and then fixed to each other.
  • the box or part of the box thus formed is then extracted from the mandrel in order to proceed in particular with its filling, its marking or any other action.
  • This invention finds a particularly important, although not exclusive, application in the field of reinforced corrugated cardboard boxes.
  • the shaping of the blank around the mandrel, the fixing of the tongue and the formation of the bottom of the box is carried out using several actuators.
  • the box is ejected from the mandrel by acting on a jack, capable of moving a transverse plate, arranged inside the mandrel and serving as an end face thereof.
  • the box tilts passing over a first conveyor, then a second conveyor located at a lower level.
  • the box is then evacuated by this second conveyor, on which it rests by its bottom.
  • the object of the invention is to overcome these drawbacks by proposing a device and a method for extracting a box or part of a box with a polygonal section from a mandrel making it possible to carry out this extraction continuously and with great precision, while being of a simple design and / or implementation.
  • the invention proposes in particular a device for extracting a box or part of a box with a polygonal section from a mandrel comprising an upper face, a lower face connected by lateral faces and an end face, mandrel on which it has been previously formed from a blank comprising a series of at least three flaps, namely two end flaps on either side of at least one intermediate flap, said flaps being connected to each other by parallel folding lines provided with side flaps, respectively connected to said flaps by folding lines perpendicular to the folding lines connecting said flaps, characterized in that it comprises a plate comprising first gripping means and movable in translation between a deployed position in which the plate is near the end face of the mandrel on which side flaps are intended to be folded up and a folded position in which the plate is away from the mandrel and in that the mandrel itself is movable between a first forming position in which its outer cross section corresponds to the inner cross section of the can or part of the can and a
  • face of the mandrel is understood to mean a plane delimited by its end edges, for example formed by angles, without said face necessarily being solid and / or formed by a plate with a surface area equal to that of said face.
  • plate comprising gripping means
  • gripping means is understood to mean a surface element extending over an area equal to at least part of the area of a side flap suitable for forming the bottom of the box or part of the box.
  • Part of a box is in particular the lid or the bottom of a box.
  • FIG. 1 shows a top view of an embodiment of a blank usable with the method and the gluing device according to the invention.
  • the figure 2 is a perspective view of a machine for forming a box with a polygonal section, from the blank illustrated in figure 1 , including a sizing device according to the invention.
  • the figure 3 is a side view in longitudinal section of the machine shown in figure 2 , more precisely on the right side of the machine in the direction of transport of the blanks.
  • FIGS. 4 and 5 are top views of the machine shown on figure 2 , the figure 5 differing from figure 4 in that it also represents blanks being processed on the machine.
  • the figure 6 is a rear perspective view of an example of an extraction device according to the invention, in the retracted position.
  • the figure 7 is a view similar to figure 6 , in which the extraction device is in the deployed position.
  • the figures 8A to 8F are side views illustrating the different stages of extracting a box from the mandrel.
  • the figure 9 is a perspective view illustrating the extraction device in the deployed position and with a box, corresponding to the figures 7 and 8C .
  • the figure 10 is a perspective view illustrating the extraction device in the folded position and with a box, corresponding to the figures 6 and 8F .
  • the figures 11A to 11G are top views illustrating the various stages of transfer and evacuation of the box, after its extraction.
  • the figure 1 shows a blank 1 made of double-sided corrugated cardboard, for example of low weight ( ⁇ 250 g / m2), for example 3 mm thick, intended to form a box.
  • first fold lines parallel to each other, namely a first central or reference fold line 8, two first lateral fold lines 9 and 10, and a first end fold line 11, junction with the tongue 7.
  • Flaps 3 and 6 are called end flaps and flaps 4 and 5, intermediate flaps.
  • the blank comprises, in a manner known in itself, a first set 12 of rectangular or substantially rectangular flaps 13 connected to the main flaps by second fold lines 14 perpendicular to the first and suitable for forming the top of the box after filling and a second set 15 of rectangular or substantially rectangular flaps 16a to 16d also connected to the main flaps by second fold lines 14 and suitable for forming the bottom of the box.
  • the method and the device according to the invention can also use variants of the blank illustrated in figure 1 and in particular a blank comprising rectangular main flaps interconnected by rectangular intermediate shutters.
  • figures 2 to 5 describe a machine for forming a box or part of a box with a polygonal section from the blank illustrated in figure 1 , this machine comprising a sizing device according to the embodiment of the invention more particularly described here, in particular with reference to the other figures.
  • This machine 20 comprises a frame or structure 21 forming a platform supporting independent subassemblies or modules, assembled to form a box from the blank illustrated in figure 1 .
  • These modules can be manufactured independently and then mounted on the frame 22.
  • the frame 21 provides the connection between the two end modules, namely the storage-unstacking module 30 and the extraction module 60.
  • an electrical cabinet may be provided which includes a PLC programmable control of the machine, known in itself.
  • the first storage-unstacking module 30 comprises a storage magazine 31 in the semi-vertical position of the blanks 1 to be formed.
  • This comprises two modular chains 32 driven by a system 33, comprising for example an asynchronous motor.
  • the chains 32 are for example coupled to a freewheel 34 and make it possible to maintain a blank ready to be fed in the front part 36.
  • the blanks are stored with the printed side facing the outside of the machine and the tab of the blank located on the right side of the machine in the direction of travel of the blanks.
  • This module 30 also includes means 35 (cf. figure 3 ) unstacking blanks 1 from the store 31.
  • the gluing module 40 comprises a gluing device with a flat support 41, such as a table, intended to receive a blank 1.
  • a flat support 41 such as a table
  • cleats 410 are provided which are fixed relative to the table, ensuring the positioning of the blank.
  • the gluing device also comprises a system of articulated arms 42 supporting a nozzle 420 positioned above the support.
  • the forming module 50 comprises a mandrel 51, that is to say a forming tool, around which the blank previously glued by the sizing device will be formed.
  • transfer means 43 comprising a system of articulated arms, located under the table 41 and capable of gripping a blank from below by means of aspiration.
  • the forming module 50 (cf. figure 4 ) for its part comprises two nacelles 52, 53, integral with the frame 21 and arranged on either side of the mandrel 51, transversely and symmetrically with respect to the direction of supply of the blank from the gluing station.
  • These nacelles comprise, in the example illustrated on the figures 2 to 5 , the means for winding the shutters and the means for fixing the tongue.
  • the extraction module 60 comprises an extraction station for extracting a box or part of a box with a polygonal section from the mandrel 51 where it has been formed, by means of an extraction device 61, an evacuation station comprising the two conveyors 62, 63 as well as a transfer station from the extraction station to the evacuation station.
  • This extraction device is shown in the folded position at the figure 6 and in the deployed position on the figure 7 .
  • the system 63 is, at one of its ends 630, made integral with the frame 21 of the machine by appropriate means 631.
  • the system 63 is integral with support means 640 for the plate 64.
  • these support means comprise two parallel parts 6400 fixed, by one of their ends 6401, to the end 632 of the system 63.
  • the other ends 6402 of the support means 640 are connected by a common axis 6403, around which the plate 64 is mounted to be movable in rotation.
  • the actuation of the plate is carried out by means of the assembly of links 643.
  • the system 63 comprises two sets 633 and 634 of arms articulated between them which can be suitably controlled so that the extraction device 61 assumes the folded position illustrated in figure 6 or the deployed position shown in figure 7 .
  • Plate 64 is shown in a flattened position on the figure 6 and in an upright position on the figure 7 .
  • the device 61 is designed to complete the production of the bottom of the box or part of the box, previously formed on the mandrel 51. This is illustrated by the figures 8A to 8C .
  • FIG 8A schematically illustrates the forming station 50, with the mandrel 51.
  • the outer cross section of the mandrel corresponds to the inner cross section of the box which will be obtained from blank 1.
  • the distance between the application face 510 of the mandrel and the opposite upper face 511 is less than the width of the box which will be obtained from the blank 1.
  • the figure 8A illustrates the blank 1 at the end of its forming at the forming station 50.
  • the shutter 5 is pressed against the application face 510, the shutter 3, against the opposite face 511 and flaps 4 and 6 on the side faces. Only the side face 512 is illustrated in the figures.
  • the flap 3 is fixed on the tongue 7, the side flaps 16b and 16d are folded against the end face 514 of the mandrel, as is the flap 16a.
  • the blank is in the configuration illustrated in figure 8A , while the extraction device 61 is in the position shown in figure 6 .
  • the plate 64 is therefore away from the mandrel 51 and it is in its flattened position.
  • the figure 8A also shows that the plate 64 is then substantially parallel to the application face 510 of the mandrel, its upper face 642 being located at a level lower than that of the application face 510.
  • the articulated arm system 63 has been actuated so as to deploy in the longitudinal direction of the machine or else in a direction substantially perpendicular to the end face 514 of the mandrel, in the direction opposite to that of the displacement of the blanks in machine 21.
  • the extraction device 61 and the mandrel 51 are positioned relative to each other, such that the plate 64 is located under the flap 16c in the deployed position of the extraction device 6.
  • This actuation is carried out by means of the assembly of links 643.
  • the rotational movement of the plate 64 in the clockwise direction allows the flap 16c to be folded around the fold line 14 against the end face 514 of the mandrel, and more precisely on the flaps 16b and 16d previously folded over this face d 'end.
  • the plate 64 also supports the flap 16a previously folded against the flaps 16b and 16d.
  • the plate 64 applies against the flaps 16b and 16d, by exerting a pressure force, to secure the flaps, thanks to the lines of adhesive present on the upper face of the blank, at the level of the flaps 16a and 16c.
  • the gripping means 641 provided on the face 642 of the plate 64 are then activated to engage the bottom of the box thus formed, by gripping it by suction.
  • the figure 8D illustrates the next step in which the mandrel 1 is placed in a second retracted position, in which its outer cross section is less than the inner cross section of the can.
  • the articulated arm system 63 is substantially in the folded position and the plate 24 performs a counterclockwise rotational movement about the axis 6403.
  • the box remains in good contact with the plate 24.
  • the figure 8F illustrates the position of the box and the extraction device, at the end of the extraction process.
  • the articulated arm system 63 and the plate 64 are in the position illustrated in figure 6 , the system 63 being in the folded position and the plate 64 in the flattened position.
  • the box thus extracted from the mandrel can be placed on one or other of the conveyors 62 or 63.
  • the figures 9 and 10 illustrate the positioning of the extraction device 61, relative to the conveyors 62 and 63.
  • these two conveyors extend longitudinally, that is to say in the direction of movement of the blanks in the machine.
  • the extraction device is positioned at the front of the conveyors 62 or 63, or else between these conveyors and the mandrel 51, and between the two conveyors.
  • the figure 9 illustrates the extraction device 61 and the two conveyors 62, 63 while the extraction device 61 is in the position illustrated in figures 7 and 8C , a box 1 'in the supine position being engaged with the plate 24.
  • the figure 10 illustrates the extraction device in the position illustrated in figures 6 and 8F , a box 1 'being present standing on the plate 24 in a flattened position.
  • This transfer is here carried out by means of a device 65 comprising an arm 550 movable in rotation about an axis 651 which is fixed relative to the frame 21 and substantially vertical, that is to say substantially perpendicular to the table 41 or else. to the application face 510 of the mandrel.
  • This axis of rotation 651 extends between the two conveyors 62 and 63, only the latter being illustrated on the figures 11A to 11G .
  • the device 65 supports, at the end of the arm 650 opposite to the axis 651, a plate 652 provided with gripping means 653.
  • this plate 652 is movable between a position retracted, illustrated for example on figure 11A and a deployed position, illustrated for example on figure 11B .
  • the figure 11A therefore illustrates the box 1 ′ on the extraction device 61.
  • the box is open and rests by its bottom on the plate 64 of the extraction device.
  • the plate 652 of the extraction device 65 is then facing a side face of the box.
  • the figure 11B illustrates the next step in which the device 65 is passed into its deployed position.
  • the gripping means 652 are then in contact with the lateral face of the box 1 '. They are actuated so as to grip the box.
  • the device 65 initiates a rotational movement around the axis 651 and in the clockwise direction.
  • the device 65 In its position shown in figure 11D , the device 65 has completed its movement of rotation of 90 ° and the box 1 'is then in contact with or slightly above the conveyor 63. The gripping means 652 are then deactivated.
  • the device 65 is passed into its folded position and the box 1 'is removed by the conveyor 63.
  • the figure 11G illustrates the end of the 90 ° rotational movement of the device 65 which returns to the position illustrated in figure 11A , to perform a new transfer cycle of a box 1 'on the conveyor 63.
  • the extraction device 61 could be designed so that the system of articulated arms 63 is movable in rotation about a vertical axis passing through its first end 630.
  • the extraction device being in the folded position, it could rotate 90 ° around this vertical axis.
  • the box 1 ' would then be located opposite one end of the conveyor 63. Additional means would then be provided to carry out its transfer to the conveyor 63.
  • the extraction device makes it possible to move the box from a lying position to a standing position, the face of the box which is still open then being directed upwards.
  • the box is in a stable position when it is upright since it is permanently held by the extraction device when it is tilted.
  • this extraction device 61 with transfer means, such as the device 65, makes it possible to deposit the box on a conveyor, always stable.
  • these transfer means like the extraction device 61, comprise gripping means, in particular by suction.
  • the invention avoids the drawbacks of the devices and methods known in the state of the art by permanently maintaining contact between the box and the gripping means, until the box is placed on the conveyor. This contributes to increasing the rates achievable with the machine 20.
  • a first blank 1 is extracted and it is tilted horizontally.
  • lines of adhesive are deposited on at least two side flaps 16c and 16a, on the upper face of the blank, the lower face constituting the printed face of the blank.
  • the blank is then transferred from the gluing station to the forming station and, during this transfer, a line of adhesive is deposited near the free edge of the shutter 3 or on the tongue 7.
  • the blank 1 being positioned under the mandrel, its winding around the mandrel is carried out, here by means of two boats 52 and 53.
  • this forming can be carried out by any means.
  • the flap 3 is glued on the tongue 7 and the side flaps 16a and 16c are glued on the flaps 16b and 16d to form the bottom of the box on the end face 510 of the mandrel. The latter is turned towards the extraction module 60.
  • the flaps are not fixed to each other, only the flaps 16a, 16b and 16d being folded.
  • the device 61 then extracts the box thus formed from the mandrel 51, as has been described with reference to figures 8D to 8F , the box then being placed on one or the other of the conveyors 62 or 63, for example as illustrated in the figures 11A to 11G .
  • this method is implemented within the framework of a successive and automatic forming of boxes or parts of boxes, such that blank n is glued during the forming of blank n - 1.
  • the present invention is not limited to the embodiments more particularly described. On the contrary, it embraces all the variants thereof and in particular those where the mandrel has eight sides and / or those where the flaps forming the bottom are folded over the mandrel by complementary means.

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Description

La présente invention concerne un dispositif d'extraction d'une boîte ou partie de boîte à section polygonale depuis un mandrin sur lequel elle a été précédemment formée à partir d'un flan de matière en feuille.The present invention relates to a device for extracting a box or part of a box with a polygonal section from a mandrel on which it has been previously formed from a blank of sheet material.

Elle concerne également un procédé d'extraction d'une boîte ou partie de boîte à section polygonale depuis un mandrin.It also relates to a method for extracting a box or part of a box with a polygonal section from a mandrel.

Un tel flan de matière en feuille comporte classiquement une suite d'au moins trois volets, à savoir deux volets extrêmes situés de part et d'autre d'au moins un volet intermédiaire, lesdits volets étant reliés les uns aux autres par des lignes de pliage parallèles et pourvus de rabats latéraux, reliés respectivement auxdits volets par des lignes de pliage perpendiculaires aux lignes de pliage reliant lesdits volets, le bord libre d'un des volets extrêmes étant pourvu d'une languette reliée audit volet extrême par une ligne de pliage parallèle aux lignes de pliage reliant lesdits volets.Such a blank of sheet material conventionally comprises a series of at least three flaps, namely two end flaps located on either side of at least one intermediate flap, said flaps being connected to each other by lines of parallel folding and provided with side flaps, respectively connected to said flaps by fold lines perpendicular to the fold lines connecting said flaps, the free edge of one of the end flaps being provided with a tongue connected to said end flap by a fold line parallel to the fold lines connecting said flaps.

Lorsque le flan comporte trois volets, il permet d'obtenir une partie d'une boîte (couvercle ou fond). Lorsqu'il comporte au moins quatre volets, il permet d'obtenir une boîte.When the blank has three flaps, it makes it possible to obtain part of a box (lid or bottom). When it has at least four parts, it makes it possible to obtain a box.

Pour permettre l'obtention d'une boîte ou d'une partie de boîte, un adhésif est déposé d'une part, sur deux rabats latéraux et d'autre part, sur ladite languette d'un volet extrême ou à proximité du bord libre du volet extrême opposé à ladite languette.To enable a box or part of a box to be obtained, an adhesive is deposited on the one hand, on two side flaps and on the other hand, on said tab of an end flap or near the free edge of the end flap opposite said tongue.

Ensuite, les volets sont enroulés autour d'un mandrin à section polygonale dont la section transversale extérieure correspond à la section transversale intérieure de la boîte ou partie de boîte à obtenir, la languette est fixée contre le bord libre de l'autre volet extrême en appui sur la face supérieure du mandrin, et les rabats se trouvant du même côté desdits volets et dont certains comportent un adhésif sont repliés contre une face d'extrémité correspondante du mandrin puis fixés les uns aux autres.Then, the flaps are wound around a mandrel with a polygonal section, the outer cross section of which corresponds to the inner cross section of the box or part of the box to be obtained, the tongue is fixed against the free edge of the other end flap in bearing on the upper face of the mandrel, and the flaps located on the same side of said flaps and some of which include an adhesive are folded back against a corresponding end face of the mandrel and then fixed to each other.

La boîte ou partie de boîte ainsi formée est ensuite extraite du mandrin pour procéder notamment à son remplissage, à son marquage ou toute autre action.The box or part of the box thus formed is then extracted from the mandrel in order to proceed in particular with its filling, its marking or any other action.

Cette invention trouve une application particulièrement importante bien que non exclusive dans le domaine des boîtes renforcées en carton ondulé.This invention finds a particularly important, although not exclusive, application in the field of reinforced corrugated cardboard boxes.

On connait déjà de nombreux procédés et dispositifs permettant d'extraire une boîte à section polygonale depuis un mandrin.Numerous methods and devices are already known for extracting a box with a polygonal section from a mandrel.

On peut notamment citer le document EP 0 334 707 qui décrit un procédé et un dispositif consistant à prélever successivement les flans dans un magasin et à les déposer sur une table munie de doigts d'entrainement. Ces derniers font glisser le flan sur la table pour l'amener sous le mandrin. Pendant le transfert vers le mandrin, le flan rencontre des encolleurs disposés au-dessus et au-dessous de la table qui déposent des lignes d'adhésif sur le flan.We can cite in particular the document EP 0 334 707 which describes a method and a device consisting in successively removing the blanks in a store and depositing them on a table provided with drive fingers. They slide the blank on the table to bring it under the mandrel. During transfer to the mandrel, the blank encounters glue boards placed above and below the table that deposit lines of adhesive on the blank.

La mise en forme du flan autour du mandrin, la fixation de la languette et la formation du fond de la boîte est assurée à l'aide de plusieurs actionneurs.The shaping of the blank around the mandrel, the fixing of the tongue and the formation of the bottom of the box is carried out using several actuators.

Une fois la boîte formée, elle est éjectée du mandrin en agissant sur un vérin, susceptible de déplacer une plaque transversale, disposée à l'intérieur du mandrin et servant de face d'extrémité à celui-ci.Once the box has been formed, it is ejected from the mandrel by acting on a jack, capable of moving a transverse plate, arranged inside the mandrel and serving as an end face thereof.

Sous l'effet du vérin, la boîte bascule en passant sur un premier convoyeur, puis un deuxième convoyeur situé à un niveau inférieur. La boîte est alors évacuée par ce deuxième convoyeur, sur lequel elle repose par son fond.Under the effect of the jack, the box tilts passing over a first conveyor, then a second conveyor located at a lower level. The box is then evacuated by this second conveyor, on which it rests by its bottom.

De nombreuses variantes de ce dispositif ont été proposées et elles apportent globalement satisfaction, voir par exemple FR 2 770 446 .Numerous variants of this device have been proposed and they are generally satisfactory, see for example FR 2 770 446 .

Ces dispositifs présentent néanmoins des inconvénients car le fait de laisser tomber la boîte ne permet pas d'assurer, dans tous les cas, un bon positionnement de celle-ci. Par ailleurs, ceci nécessite généralement ultérieurement une reprise de la boîte par des moyens appropriés, ce qui rompt le cycle de traitement de la boîte et limite les cadences qui peuvent être obtenues.These devices nevertheless have drawbacks because the fact of dropping the box does not ensure, in all cases, a good positioning thereof. Furthermore, this generally necessitates subsequently resuming the box by appropriate means, which breaks the processing cycle of the box and limits the rates which can be obtained.

L'invention a pour objet de pallier ces inconvénients en proposant un dispositif et un procédé d'extraction d'une boîte ou partie de boîte à section polygonale depuis un mandrin permettant de réaliser cette extraction en continu et avec une grande précision, tout en étant d'une conception et/ou d'une mise en œuvre simple.The object of the invention is to overcome these drawbacks by proposing a device and a method for extracting a box or part of a box with a polygonal section from a mandrel making it possible to carry out this extraction continuously and with great precision, while being of a simple design and / or implementation.

Dans ce but, l'invention propose notamment un dispositif d'extraction d'une boîte ou partie de boîte à section polygonale depuis un mandrin comportant une face supérieure, une face inférieure reliées par des faces latérales et une face d'extrémité, mandrin sur lequel elle a été préalablement formée à partir d'un flan comportant une suite d'au moins trois volets, à savoir deux volets extrêmes de part et d'autre d'au moins un volet intermédiaire, lesdits volets étant reliés les uns aux autres par des lignes de pliage parallèles et pourvus de rabats latéraux, reliés respectivement auxdits volets par des lignes de pliage perpendiculaires aux lignes de pliage reliant lesdits volets, caractérisé en ce qu'il comprend une plaque comportant des premiers moyens de préhension et mobile en translation entre une position déployée dans laquelle la plaque est à proximité de la face d'extrémité du mandrin sur laquelle des rabats latéraux sont destinés à être repliés et une position repliée dans laquelle la plaque est à l'écart du mandrin et en ce que le mandrin est lui-même mobile entre une première position de formage dans laquelle sa section transversale extérieure correspond à la section transversale intérieure de la boîte ou partie de boîte et une deuxième position rétractée dans laquelle sa section transversale extérieure est inférieure à la section transversale intérieure de la boîte ou partie de boîte.To this end, the invention proposes in particular a device for extracting a box or part of a box with a polygonal section from a mandrel comprising an upper face, a lower face connected by lateral faces and an end face, mandrel on which it has been previously formed from a blank comprising a series of at least three flaps, namely two end flaps on either side of at least one intermediate flap, said flaps being connected to each other by parallel folding lines provided with side flaps, respectively connected to said flaps by folding lines perpendicular to the folding lines connecting said flaps, characterized in that it comprises a plate comprising first gripping means and movable in translation between a deployed position in which the plate is near the end face of the mandrel on which side flaps are intended to be folded up and a folded position in which the plate is away from the mandrel and in that the mandrel itself is movable between a first forming position in which its outer cross section corresponds to the inner cross section of the can or part of the can and a second position retracted in which its outer cross section is less than the inner cross section of the box or part of the box.

Par face du mandrin, on entend un plan délimité par ses arêtes d'extrémité, par exemple formée par des cornières, sans pour autant que ladite face soit obligatoirement pleine et/ou formée par une plaque de surface égale à celle de ladite face.The term “face of the mandrel” is understood to mean a plane delimited by its end edges, for example formed by angles, without said face necessarily being solid and / or formed by a plate with a surface area equal to that of said face.

De même par plaque (comportant des moyens de préhension) on entend un élément surfacique s'étendant sur une surface égale à au moins une partie de la surface d'un rabat latéral propre à former le fond de la boîte ou partie de boîte.Likewise, the term “plate (comprising gripping means)” is understood to mean a surface element extending over an area equal to at least part of the area of a side flap suitable for forming the bottom of the box or part of the box.

Une partie de boîte est notamment le couvercle ou le fond d'une boîte.Part of a box is in particular the lid or the bottom of a box.

Dans des modes de réalisation avantageux, on a par ailleurs et/ou de plus recours à l'une et/ou à l'autre des dispositions suivantes :

  • le dispositif comprend un système de bras articulés susceptible de se déployer selon une direction sensiblement perpendiculaire à ladite face d'extrémité du mandrin et dont une première extrémité est solidaire du bâti du dispositif et dont une deuxième extrémité supporte ladite plaque ;
  • ladite plaque est mobile en rotation entre une position aplatie dans laquelle elle est sensiblement parallèle à la face d'application du mandrin et une position redressée dans laquelle elle est sensiblement parallèle à ladite face d'extrémité ;
  • les premiers moyens de préhension comprennent des moyens d'aspiration ;
  • lorsque le mandrin est dans sa première position rétractée, la distance entre la face supérieure et la face d'application du mandrin est agencée pour être inférieure à la largeur de la boîte ou partie de boîte ;
  • le système de bras articulés est mobile en rotation autour d'un axe vertical passant par sa première extrémité solidaire du bâti.
In advantageous embodiments, moreover and / or additionally recourse is had to one and / or other of the following provisions:
  • the device comprises a system of articulated arms capable of being deployed in a direction substantially perpendicular to said end face of the mandrel and of which a first end is integral with the frame of the device and of which a second end supports said plate;
  • said plate is movable in rotation between a flattened position in which it is substantially parallel to the application face of the mandrel and a straightened position in which it is substantially parallel to said end face;
  • the first gripping means comprise suction means;
  • when the mandrel is in its first retracted position, the distance between the upper face and the application face of the mandrel is arranged to be less than the width of the box or part of the box;
  • the articulated arm system is movable in rotation about a vertical axis passing through its first end secured to the frame.

L'invention concerne également un procédé d'extraction d'une boîte ou partie de boîte à section polygonale depuis un mandrin, la boîte ou partie de boîte résultant de la mise en forme autour dudit mandrin d'un flan comportant une suite d'au moins trois volets, à savoir deux volets extrêmes de part et d'autre d'au moins un volet intermédiaire, lesdits volets étant reliés les uns aux autres par des lignes de pliage parallèles et pourvus de rabats latéraux, reliés respectivement auxdits volets par des lignes de pliage perpendiculaires aux lignes de pliage reliant lesdits volets, ledit flan ayant été préalablement encollé au moins au niveau de deux rabats latéraux et amené sous le mandrin, lequel est dans une première position de formage dans laquelle les volets ont été enroulés autour du mandrin, caractérisé en ce qu'il comprend les étapes suivantes :

  • appliquer une force de pression sur une face d'extrémité du mandrin sur laquelle des rabats latéraux ont été préalablement repliés, pour fixer les rabats entre eux et former le fond de la boîte ou partie de boîte dont la surface intérieure est en contact avec le mandrin,
  • saisir par aspiration le fond de la boîte ou partie de boîte ainsi formée,
  • réduire la section extérieure du mandrin et
  • exercer sur la surface extérieure du fond une force de tirage perpendiculaire à la face d'extrémité, en relâchant la pression sur le fond de la boîte ou partie de boîte, pour extraire ladite boîte ou partie de boîte du mandrin.
The invention also relates to a method for extracting a box or part of a box with a polygonal section from a mandrel, the box or part of a box resulting from the shaping around said mandrel of a blank comprising a series of at least three flaps, namely two end flaps on either side of at least one intermediate flap, said flaps being connected to each other by parallel fold lines and provided with side flaps, respectively connected to said flaps by lines folding perpendicular to the fold lines connecting said flaps, said blank having been previously glued at least at two side flaps and brought under the mandrel, which is in a first forming position in which the flaps have been wound around the mandrel, characterized in that it comprises the following steps:
  • apply a pressure force on an end face of the mandrel on which side flaps have been folded beforehand, to fix the flaps together and form the bottom of the box or part of the box the inner surface of which is in contact with the mandrel,
  • gripping by suction the bottom of the box or part of the box thus formed,
  • reduce the outer section of the mandrel and
  • exerting on the outer surface of the bottom a pulling force perpendicular to the end face, releasing the pressure on the bottom of the box or part of the box, to extract said box or part of the box from the mandrel.

De manière avantageuse, on a par ailleurs et/ou de plus recours à l'une et/ou à l'autre des dispositions suivantes :

  • après extraction de la boîte ou partie de boîte du mandrin, on redresse ladite boîte ou partie de boîte verticalement et on la transfère à un poste d'évacuation ;
  • on extrait et on redresse la boîte ou partie de boîte par les mêmes moyens ;
  • lesdits moyens contribuent également au transfert de la boîte ou partie de boîte à un poste d'évacuation ;
  • lesdits moyens permettent également de rabattre au moins un desdits rabats sur ladite face latérale du mandrin.
Advantageously, one and / or the other of the following provisions is moreover and / or in addition:
  • after extracting the box or part of the box from the mandrel, said box or part of the box is straightened vertically and transferred to an evacuation station;
  • the box or part of the box is extracted and straightened by the same means;
  • said means also contribute to the transfer of the box or part of the box to an evacuation station;
  • said means also allow at least one of said flaps to be folded over said lateral face of the mandrel.

L'invention concerne également une machine de formation d'une boîte ou partie de boîte à section polygonale à partir d'un flan comportant une suite d'au moins trois volets, à savoir deux volets extrêmes de part et d'autre d'au moins deux volets intermédiaires, lesdits volets étant reliés les uns aux autres par des lignes de pliage parallèles et pourvus de rabats latéraux, reliés respectivement auxdits volets par des lignes de pliage perpendiculaires aux lignes de pliage reliant lesdits volets, comprenant :

  • un poste d'encollage dans lequel un adhésif est déposé sur au moins deux rabats latéraux,
  • un poste de formage dans lequel les volets sont enroulés autour du mandrin et des rabats se trouvant du même côté desdits volets sont repliés et
  • un poste d'extraction comprenant un dispositif tel que décrit précédemment.
The invention also relates to a machine for forming a box or part of a box with a polygonal section from a blank comprising a series of at least three flaps, namely two end flaps on either side of at least two intermediate flaps, said flaps being connected to each other to the others by parallel fold lines and provided with side flaps, respectively connected to said flaps by fold lines perpendicular to the fold lines connecting said flaps, comprising:
  • a gluing station in which an adhesive is deposited on at least two side flaps,
  • a forming station in which the flaps are wound around the mandrel and the flaps on the same side of said flaps are folded and
  • an extraction station comprising a device as described above.

De manière avantageuse, on a par ailleurs et/ou de plus recours à l'une et/ou à l'autre des dispositions suivantes :

  • la machine comprend également un poste de transfert vers au moins un poste d'évacuation ;
  • le poste de transfert comprend des deuxièmes moyens de préhension de la boîte ou partie de boîte présente au poste d'extraction, ces deuxièmes moyens étant mobiles en rotation entre une première position dans laquelle ils sont en regard du poste d'extraction et une deuxième position dans laquelle ils sont en regard du poste d'évacuation, ces deuxièmes moyens de préhension étant également mobiles en translation entre une position déployée dans laquelle ils sont destinés à être au contact de la boîte ou partie de boîte et une position rétractée de repos ;
  • le poste d'évacuation comprend des moyens de préhension mobiles en translation entre une position rétractée et une position déployée ;
  • les deuxièmes moyens de préhension comprennent des moyens d'aspiration.
Advantageously, one and / or the other of the following provisions is moreover and / or in addition:
  • the machine also comprises a transfer station to at least one evacuation station;
  • the transfer station comprises second means for gripping the box or part of the box present at the extraction station, these second means being movable in rotation between a first position in which they are opposite the extraction station and a second position in which they are opposite the evacuation station, these second gripping means also being movable in translation between a deployed position in which they are intended to be in contact with the box or part of the box and a retracted rest position;
  • the discharge station comprises gripping means movable in translation between a retracted position and a deployed position;
  • the second gripping means comprise suction means.

L'invention concerne aussi un procédé de formation d'une boîte ou partie de boîte à section polygonale, à partir d'un flan comportant un ensemble de volets reliés les uns aux autres par des lignes de pliage parallèles et pourvus de rabats latéraux, reliés respectivement auxdits volets par des lignes de pliage perpendiculaires aux lignes de pliage reliant lesdits volets, dans lequel :

  • le flan est encollé au moins au niveau de deux rabats latéraux et amené sous un mandrin,
  • le flan est ensuite mis en forme autour du mandrin pour obtenir une boîte ou partie de boîte,
  • ladite boîte ou partie de boîte est extraite du mandrin en mettant en œuvre le procédé tel que décrit précédemment,
  • ladite boîte ou partie de boîte étant ensuite transférée à un poste d'évacuation.
The invention also relates to a method of forming a box or part of a box with a polygonal section, from a blank comprising a set of flaps connected to each other by parallel fold lines and provided with side flaps, connected. respectively to said flaps by fold lines perpendicular to the fold lines connecting said flaps, wherein:
  • the blank is glued at least at the level of two side flaps and brought under a mandrel,
  • the blank is then shaped around the mandrel to obtain a box or part of a box,
  • said box or part of a box is extracted from the mandrel by implementing the method as described above,
  • said box or part of a box then being transferred to an evacuation station.

L'invention sera mieux comprise et ses avantages apparaitront plus clairement à la lecture de la description qui suit de modes de réalisation donnés à titre d'exemples non limitatifs. La description se réfère aux dessins qui l'accompagnent dans lesquels : La figure 1 montre en vue de dessus un mode de réalisation d'un flan utilisable avec le procédé et le dispositif d'encollage selon l'invention.The invention will be better understood and its advantages will appear more clearly on reading the following description of embodiments given by way of non-limiting examples. The description refers to the accompanying drawings in which: The figure 1 shows a top view of an embodiment of a blank usable with the method and the gluing device according to the invention.

La figure 2 est une vue en perspective d'une machine de formation d'une boîte à section polygonale, à partir du flan illustré à la figure 1, incluant un dispositif d'encollage selon l'invention.The figure 2 is a perspective view of a machine for forming a box with a polygonal section, from the blank illustrated in figure 1 , including a sizing device according to the invention.

La figure 3 est une vue de côté en coupe longitudinale de la machine illustrée à la figure 2, plus précisément du côté droit de la machine dans le sens d'acheminement des flans.The figure 3 is a side view in longitudinal section of the machine shown in figure 2 , more precisely on the right side of the machine in the direction of transport of the blanks.

Les figures 4 et 5 sont des vues de dessus de la machine illustrée à la figure 2, la figure 5 différant de la figure 4 en ce qu'elle représente également des flans en cours de traitement sur la machine.The figures 4 and 5 are top views of the machine shown on figure 2 , the figure 5 differing from figure 4 in that it also represents blanks being processed on the machine.

La figure 6 est une vue en perspective arrière d'un exemple de dispositif d'extraction selon l'invention, en position rétractée.The figure 6 is a rear perspective view of an example of an extraction device according to the invention, in the retracted position.

La figure 7 est une vue similaire à la figure 6, dans laquelle le dispositif d'extraction est en position déployée.The figure 7 is a view similar to figure 6 , in which the extraction device is in the deployed position.

Les figures 8A à 8F sont des vues de côté illustrant les différentes étapes de l'extraction d'une boîte depuis le mandrin.The figures 8A to 8F are side views illustrating the different stages of extracting a box from the mandrel.

La figure 9 est une vue en perspective illustrant le dispositif d'extraction en position déployée et avec une boîte, correspondant aux figures 7 et 8C.The figure 9 is a perspective view illustrating the extraction device in the deployed position and with a box, corresponding to the figures 7 and 8C .

La figure 10 est une vue en perspective illustrant le dispositif d'extraction en position repliée et avec une boîte, correspondant aux figures 6 et 8F.The figure 10 is a perspective view illustrating the extraction device in the folded position and with a box, corresponding to the figures 6 and 8F .

Les figures 11A à 11G sont des vues de dessus illustrant les différentes étapes de transfert et d'évacuation de la boîte, après son extraction.The figures 11A to 11G are top views illustrating the various stages of transfer and evacuation of the box, after its extraction.

Les éléments communs aux différentes figures seront désignés par les mêmes références.The elements common to the various figures will be designated by the same references.

La figure 1 montre un flan 1 en carton ondulé double face, par exemple à faible grammage (< 250 g/m2) par exemple d'épaisseur 3 mm destiné à former une boîte.The figure 1 shows a blank 1 made of double-sided corrugated cardboard, for example of low weight (<250 g / m2), for example 3 mm thick, intended to form a box.

Il comporte une suite 2 de quatre volets principaux rectangulaires 3, 4, 5, 6 terminés par une languette de collage 7 et reliés entre eux par des premières lignes de pliage, parallèles entre elles, à savoir une première ligne de pliage centrale ou de référence 8, deux premières lignes de pliage latérales 9 et 10, et une première ligne de pliage d'extrémité 11, de jonction avec la languette 7.It comprises a series 2 of four main rectangular shutters 3, 4, 5, 6 terminated by a gluing tab 7 and interconnected by first fold lines, parallel to each other, namely a first central or reference fold line 8, two first lateral fold lines 9 and 10, and a first end fold line 11, junction with the tongue 7.

Les volets 3 et 6 sont dénommés volets extrêmes et les volets 4 et 5, volets intermédiaires.Flaps 3 and 6 are called end flaps and flaps 4 and 5, intermediate flaps.

Le flan comprend de façon connue en elle-même un premier jeu 12 de rabats 13 rectangulaires ou sensiblement rectangulaires reliés aux volets principaux par des deuxièmes lignes de pliage 14 perpendiculaires aux premières et propres à former le dessus de la boîte après remplissage et un deuxième jeu 15 de rabats 16a à 16d rectangulaires ou sensiblement rectangulaires également reliés aux volets principaux par des deuxièmes lignes de pliage 14 et propres à former le fond de la boîte.The blank comprises, in a manner known in itself, a first set 12 of rectangular or substantially rectangular flaps 13 connected to the main flaps by second fold lines 14 perpendicular to the first and suitable for forming the top of the box after filling and a second set 15 of rectangular or substantially rectangular flaps 16a to 16d also connected to the main flaps by second fold lines 14 and suitable for forming the bottom of the box.

Le procédé et le dispositif selon l'invention peuvent également utiliser des variantes du flan illustré à la figure 1 et notamment un flan comportant des volets principaux rectangulaires reliés entre eux par des volets intermédiaires rectangulaires.The method and the device according to the invention can also use variants of the blank illustrated in figure 1 and in particular a blank comprising rectangular main flaps interconnected by rectangular intermediate shutters.

De façon connue, ces volets intermédiaires forment, sur la boîte finale, les angles biseautés de cette dernière.In known manner, these intermediate flaps form, on the final box, the bevelled angles of the latter.

Ils peuvent aussi utiliser des flans comportant un volet intermédiaire et deux volets extrêmes pour l'obtention d'une partie de boîte.They can also use blanks comprising an intermediate flap and two end flaps to obtain a part of the box.

Il est tout d'abord fait référence aux figures 2 à 5 pour décrire une machine de formation d'une boîte ou partie de boîte à section polygonale à partir du flan illustré à la figure 1, cette machine comprenant un dispositif d'encollage selon le mode de réalisation de l'invention plus particulièrement décrit ici, notamment en référence aux autres figures.First of all, reference is made to figures 2 to 5 to describe a machine for forming a box or part of a box with a polygonal section from the blank illustrated in figure 1 , this machine comprising a sizing device according to the embodiment of the invention more particularly described here, in particular with reference to the other figures.

Cette machine 20 comporte un bâti ou structure 21 formant une plateforme porteuse de sous-ensembles ou modules indépendants, assemblés pour assurer la formation d'une boîte à partir du flan illustré à la figure 1.This machine 20 comprises a frame or structure 21 forming a platform supporting independent subassemblies or modules, assembled to form a box from the blank illustrated in figure 1 .

Il s'agit du module 30 de stockage-dépilage des flans, du module 40 d'encollage des flans, du module 50 de formage, et du module 60 d'extraction.These are the blank storage-unstacking module 30, the blank gluing module 40, the forming module 50, and the extraction module 60.

Ces modules peuvent être fabriqués indépendamment et montés ensuite sur le bâti 22.These modules can be manufactured independently and then mounted on the frame 22.

Ainsi, le bâti 21 assure la liaison entre les deux modules d'extrémité, à savoir le module de stockage-dépilage 30 et le module d'extraction 60.Thus, the frame 21 provides the connection between the two end modules, namely the storage-unstacking module 30 and the extraction module 60.

Dans les poteaux 22 du bâti, peut être prévue une armoire électrique qui comprend un automate programmable de pilotage de la machine, connu en lui-même.In the posts 22 of the frame, an electrical cabinet may be provided which includes a PLC programmable control of the machine, known in itself.

Le premier module 30 de stockage-dépilage comporte un magasin 31 de stockage en position semi-verticale des flans 1 à former.The first storage-unstacking module 30 comprises a storage magazine 31 in the semi-vertical position of the blanks 1 to be formed.

Celui-ci comprend deux chaines modulaires 32 entrainées par un système 33, comprenant par exemple un moteur asynchrone.This comprises two modular chains 32 driven by a system 33, comprising for example an asynchronous motor.

Les chaines 32 sont par exemple couplées à une roue libre 34 et permettent de maintenir un flan prêt à être alimenté en partie frontale 36.The chains 32 are for example coupled to a freewheel 34 and make it possible to maintain a blank ready to be fed in the front part 36.

Dans le magasin de stockage 31, les flans sont stockés avec la face imprimée tournée vers l'extérieur de la machine et la languette du flan située du côté droit de la machine dans le sens de défilement des flans.In the storage magazine 31, the blanks are stored with the printed side facing the outside of the machine and the tab of the blank located on the right side of the machine in the direction of travel of the blanks.

Ce module 30 comporte également des moyens 35 (cf. figure 3) de dépilage des flans 1 depuis le magasin 31.This module 30 also includes means 35 (cf. figure 3 ) unstacking blanks 1 from the store 31.

Le module d'encollage 40 comporte un dispositif d'encollage avec un support plan 41, tel qu'une table, destiné à recevoir un flan 1. Sur les bords longitudinaux de cette table 41, sont prévus des taquets 410 fixes par rapport à la table, permettant d'assurer le positionnement du flan.The gluing module 40 comprises a gluing device with a flat support 41, such as a table, intended to receive a blank 1. On the longitudinal edges of this table 41, cleats 410 are provided which are fixed relative to the table, ensuring the positioning of the blank.

Le dispositif d'encollage comporte également un système de bras articulés 42 supportant une buse 420 positionnée au-dessus du support.The gluing device also comprises a system of articulated arms 42 supporting a nozzle 420 positioned above the support.

Le module 50 de formage comporte un mandrin 51, c'est-à-dire un outil de forme, autour duquel le flan préalablement encollé par le dispositif d'encollage sera formé.The forming module 50 comprises a mandrel 51, that is to say a forming tool, around which the blank previously glued by the sizing device will be formed.

Pour déplacer le flan 1 depuis le dispositif d'encollage jusque sous le mandrin 51, sont prévus des moyens de transfert 43 comprenant un système de bras articulés, situés sous la table 41 et susceptibles de saisir par en dessous un flan par des moyens d'aspiration.To move the blank 1 from the gluing device to under the mandrel 51, transfer means 43 are provided comprising a system of articulated arms, located under the table 41 and capable of gripping a blank from below by means of aspiration.

Le module de formage 50 (cf. figure 4) comporte quant à lui deux nacelles 52, 53, solidaires du bâti 21 et disposées de part et d'autre du mandrin 51, transversalement et de façon symétrique par rapport à la direction d'amenée du flan depuis le poste d'encollage.The forming module 50 (cf. figure 4 ) for its part comprises two nacelles 52, 53, integral with the frame 21 and arranged on either side of the mandrel 51, transversely and symmetrically with respect to the direction of supply of the blank from the gluing station.

Ces nacelles comportent, dans l'exemple illustré sur les figures 2 à 5, les moyens d'enroulement des volets et les moyens de fixation de la languette.These nacelles comprise, in the example illustrated on the figures 2 to 5 , the means for winding the shutters and the means for fixing the tongue.

Le module d'extraction 60 comprend un poste d'extraction pour extraire une boîte ou partie de boîte à section polygonale depuis le mandrin 51 où elle a été formée, grâce à un dispositif d'extraction 61, un poste d'évacuation comprenant les deux convoyeurs 62, 63 ainsi qu'un poste de transfert du poste d'extraction vers le poste d'évacuation.The extraction module 60 comprises an extraction station for extracting a box or part of a box with a polygonal section from the mandrel 51 where it has been formed, by means of an extraction device 61, an evacuation station comprising the two conveyors 62, 63 as well as a transfer station from the extraction station to the evacuation station.

Le dispositif d'extraction va maintenant être décrit plus en détail en référence aux figures 6 à 9.The extraction device will now be described in more detail with reference to the figures 6 to 9 .

Ce dispositif d'extraction est représenté en position replié à la figure 6 et en position déployée sur la figure 7.This extraction device is shown in the folded position at the figure 6 and in the deployed position on the figure 7 .

Il est du type nacelle et comprend un système de bras articulés 63 ainsi qu'une plaque 64.It is of the nacelle type and comprises a system of articulated arms 63 as well as a plate 64.

Le système 63 est, à l'une de ses extrémités 630, rendu solidaire du bâti 21 de la machine par des moyens appropriés 631.The system 63 is, at one of its ends 630, made integral with the frame 21 of the machine by appropriate means 631.

Par ailleurs, à son autre extrémité 632, le système 63 est solidaire de moyens de support 640 pour la plaque 64.Furthermore, at its other end 632, the system 63 is integral with support means 640 for the plate 64.

Dans l'exemple illustré sur les figures, ces moyens de support comportent deux pièces parallèles 6400 fixées, par l'une de leurs extrémités 6401, à l'extrémité 632 du système 63.In the example illustrated in the figures, these support means comprise two parallel parts 6400 fixed, by one of their ends 6401, to the end 632 of the system 63.

Les autres extrémités 6402 des moyens de support 640 sont reliées par un axe commun 6403, autour duquel la plaque 64 est montée mobile en rotation. L'actionnement de la plaque est réalisé au moyen de l'ensemble de biellettes 643.The other ends 6402 of the support means 640 are connected by a common axis 6403, around which the plate 64 is mounted to be movable in rotation. The actuation of the plate is carried out by means of the assembly of links 643.

Le système 63 comporte deux ensembles 633 et 634 de bras articulés entre eux qui peuvent être commandés de façon appropriée pour que le dispositif d'extraction 61 prenne la position repliée illustrée à la figure 6 ou la position déployée illustrée à la figure 7.The system 63 comprises two sets 633 and 634 of arms articulated between them which can be suitably controlled so that the extraction device 61 assumes the folded position illustrated in figure 6 or the deployed position shown in figure 7 .

La plaque 64 est représentée en position aplatie sur la figure 6 et en position redressée sur la figure 7.Plate 64 is shown in a flattened position on the figure 6 and in an upright position on the figure 7 .

Par ailleurs, la plaque 64 est munie de moyens de préhension 641. Ces moyens de préhension comprennent des moyens d'aspiration. Il peut notamment s'agir de ventouses de préhension (illustrées sur les figures 6 et 7) reliées à un système de mise sous vide de façon connue en elle-même. Ces moyens sont prévus pour être actifs sur la face supérieure 642 de la plaque 64, c'est-à-dire la face opposée au système 63 de bras articulés, sur la figure 6.Furthermore, the plate 64 is provided with gripping means 641. These gripping means comprise suction means. These may in particular be gripping suction cups (illustrated on the figures 6 and 7 ) connected to a vacuum system in a manner known per se. These means are designed to be active on the upper face 642 of the plate 64, that is to say the face opposite the system 63 of articulated arms, on the figure 6 .

Il est maintenant fait référence aux figures 8A à 8F pour expliquer les différentes étapes de fonctionnement du dispositif d'extraction illustré aux figures 6 et 7.Reference is now made to figures 8A to 8F to explain the different operating steps of the extraction device illustrated in figures 6 and 7 .

En pratique, le dispositif 61 est conçu pour terminer la réalisation du fond de la boîte ou partie de boîte, préalablement formée sur le mandrin 51. C'est ce qu'illustrent les figures 8A à 8C.In practice, the device 61 is designed to complete the production of the bottom of the box or part of the box, previously formed on the mandrel 51. This is illustrated by the figures 8A to 8C .

Ainsi, la figure 8A illustre schématiquement le poste de formage 50, avec le mandrin 51.So the figure 8A schematically illustrates the forming station 50, with the mandrel 51.

En comparant d'une part les figures 8A à 8C et d'autre part les figures 8D à 8F, on comprend que le mandrin 51 est mobile entre une position de formage, illustrée aux figures 8A et 8C et une position rétractée, illustrée aux figures 8D et 8F.By comparing on the one hand the figures 8A to 8C and on the other hand the figures 8D to 8F , it is understood that the mandrel 51 is movable between a forming position, illustrated in figures 8A and 8C and a retracted position, shown in figures 8D and 8F .

Dans la position de formage illustrée aux figures 8A à 8C, la section transversale extérieure du mandrin correspond à la section transversale intérieure de la boîte qui sera obtenue à partir du flan 1.In the forming position shown in figures 8A to 8C , the outer cross section of the mandrel corresponds to the inner cross section of the box which will be obtained from blank 1.

Dans la position rétractée illustrée aux figures 8D à 8F, la distance entre la face d'application 510 du mandrin et la face supérieure opposée 511 est inférieure à la largeur de la boîte qui sera obtenue à partir du flan 1.In the retracted position shown in figures 8D to 8F , the distance between the application face 510 of the mandrel and the opposite upper face 511 is less than the width of the box which will be obtained from the blank 1.

La figure 8A illustre le flan 1 à l'issue de son formage au poste de formage 50.The figure 8A illustrates the blank 1 at the end of its forming at the forming station 50.

Ainsi, le volet 5 est plaqué contre la face d'application 510, le volet 3, contre la face opposée 511 et les volets 4 et 6 sur les faces latérales. Seule la face latérale 512 est illustrée sur les figures.Thus, the shutter 5 is pressed against the application face 510, the shutter 3, against the opposite face 511 and flaps 4 and 6 on the side faces. Only the side face 512 is illustrated in the figures.

Par ailleurs, le volet 3 est fixé sur la languette 7, les rabats latéraux 16b et 16d sont repliés contre la face d'extrémité 514 du mandrin, ainsi que le rabat 16a.Furthermore, the flap 3 is fixed on the tongue 7, the side flaps 16b and 16d are folded against the end face 514 of the mandrel, as is the flap 16a.

A l'issue des opérations effectuées au poste de formage, le flan est dans la configuration illustrée à la figure 8A, tandis que le dispositif d'extraction 61 est dans la position illustrée à la figure 6. La plaque 64 est donc à l'écart du mandrin 51 et elle est dans sa position aplatie. La figure 8A montre également que la plaque 64 est alors sensiblement parallèle à la face d'application 510 du mandrin, sa face supérieure 642 étant située à un niveau inférieur à celui de la face d'application 510.At the end of the operations carried out at the forming station, the blank is in the configuration illustrated in figure 8A , while the extraction device 61 is in the position shown in figure 6 . The plate 64 is therefore away from the mandrel 51 and it is in its flattened position. The figure 8A also shows that the plate 64 is then substantially parallel to the application face 510 of the mandrel, its upper face 642 being located at a level lower than that of the application face 510.

Dans l'étape suivante illustrée à la figure 8B, le système de bras articulés 63 a été actionné de façon à se déployer selon la direction longitudinale de la machine ou encore selon une direction sensiblement perpendiculaire à la face d'extrémité 514 du mandrin, dans le sens opposé à celui du déplacement des flans dans la machine 21.In the next step shown in figure 8B , the articulated arm system 63 has been actuated so as to deploy in the longitudinal direction of the machine or else in a direction substantially perpendicular to the end face 514 of the mandrel, in the direction opposite to that of the displacement of the blanks in machine 21.

Le dispositif d'extraction 61 et le mandrin 51 sont positionnés l'un par rapport à l'autre, de telle sorte que la plaque 64 se trouve sous le rabat 16c dans la position déployée du dispositif d'extraction 6.The extraction device 61 and the mandrel 51 are positioned relative to each other, such that the plate 64 is located under the flap 16c in the deployed position of the extraction device 6.

A l'étape suivante illustrée à la figure 8C, le système 63 de bras articulés reste dans sa position déployée et la plaque 64 est actionnée de façon à passer dans sa position redressée (illustrée à la figure 7).In the next step illustrated in figure 8C , the system 63 of articulated arms remains in its position deployed and the plate 64 is actuated to pass into its upright position (shown in figure 7 ).

Cet actionnement est réalisé au moyen de l'ensemble de biellettes 643.This actuation is carried out by means of the assembly of links 643.

Le mouvement de rotation de la plaque 64 dans le sens horaire permet de replier le rabat 16c autour de la ligne de pliage 14 contre la face d'extrémité 514 du mandrin, et plus précisément sur les rabats 16b et 16d précédemment repliés sur cette face d'extrémité.The rotational movement of the plate 64 in the clockwise direction allows the flap 16c to be folded around the fold line 14 against the end face 514 of the mandrel, and more precisely on the flaps 16b and 16d previously folded over this face d 'end.

Dans ce mouvement, la plaque 64 prend également en charge le rabat 16a précédemment replié contre les rabats 16b et 16d.In this movement, the plate 64 also supports the flap 16a previously folded against the flaps 16b and 16d.

Ainsi, ce sont les deux rabats 16a et 16c que la plaque 64 applique contre les rabats 16b et 16d, en exerçant une force de pression, pour assurer la fixation des rabats, grâce aux lignes d'adhésif présentes sur la face supérieure du flan, au niveau des rabats 16a et 16c.Thus, it is the two flaps 16a and 16c that the plate 64 applies against the flaps 16b and 16d, by exerting a pressure force, to secure the flaps, thanks to the lines of adhesive present on the upper face of the blank, at the level of the flaps 16a and 16c.

Ainsi, à l'issue de l'étape illustrée à la figure 8C, les rabats 16a à 16d sont fixés ensemble.Thus, at the end of the step illustrated in figure 8C , the flaps 16a to 16d are secured together.

Les moyens de préhension 641 prévus sur la face 642 de la plaque 64 sont alors activés pour venir en prise avec le fond de la boîte ainsi formée, en le saisissant par aspiration.The gripping means 641 provided on the face 642 of the plate 64 are then activated to engage the bottom of the box thus formed, by gripping it by suction.

La figure 8D illustre l'étape suivante dans laquelle le mandrin 1 est placé dans une deuxième position rétractée, dans laquelle sa section transversale extérieure est inférieure à la section transversale intérieure de la boîte.The figure 8D illustrates the next step in which the mandrel 1 is placed in a second retracted position, in which its outer cross section is less than the inner cross section of the can.

La pression exercée par la plaque 24 sur la face d'extrémité 514 est relâchée et le système de bras articulés 63 est actionné pour amorcer son repliement, toujours selon une direction sensiblement longitudinale mais, cette fois, selon le sens de déplacement des flans à l'intérieur de la machine 21.The pressure exerted by the plate 24 on the end face 514 is released and the system of articulated arms 63 is actuated to initiate its folding, still in a substantially longitudinal direction but, this time, in the direction of movement of the blanks at the same time. 'inside the machine 21.

A l'étape suivante illustrée à la figure 8E, le système de bras articulés 63 est pratiquement dans la position repliée et la plaque 24 effectue un mouvement de rotation dans le sens anti-horaire autour de l'axe 6403.In the next step illustrated in figure 8E , the articulated arm system 63 is substantially in the folded position and the plate 24 performs a counterclockwise rotational movement about the axis 6403.

Du fait de l'activation des moyens de préhension, la boîte reste bien en contact avec la plaque 24.Due to the activation of the gripping means, the box remains in good contact with the plate 24.

La figure 8F illustre la position de la boîte et du dispositif d'extraction, à l'issue du processus d'extraction. Ainsi, le système de bras articulés 63 et la plaque 64 sont dans la position illustrée à la figure 6, le système 63 étant en position repliée et la plaque 64 en position aplatie.The figure 8F illustrates the position of the box and the extraction device, at the end of the extraction process. Thus, the articulated arm system 63 and the plate 64 are in the position illustrated in figure 6 , the system 63 being in the folded position and the plate 64 in the flattened position.

La boîte ainsi extraite du mandrin pourra être déposée sur l'un ou l'autre des convoyeurs 62 ou 63.The box thus extracted from the mandrel can be placed on one or other of the conveyors 62 or 63.

Les figures 9 et 10 illustrent le positionnement du dispositif d'extraction 61, par rapport aux convoyeurs 62 et 63.The figures 9 and 10 illustrate the positioning of the extraction device 61, relative to the conveyors 62 and 63.

Comme l'illustrent les figures 2 à 5, ces deux convoyeurs s'étendent longitudinalement, c'est-à-dire selon la direction de déplacement des flans dans la machine.As illustrated by figures 2 to 5 , these two conveyors extend longitudinally, that is to say in the direction of movement of the blanks in the machine.

Le dispositif d'extraction est positionné à l'avant des convoyeurs 62 ou 63, ou encore entre ces convoyeurs et le mandrin 51, et entre les deux convoyeurs.The extraction device is positioned at the front of the conveyors 62 or 63, or else between these conveyors and the mandrel 51, and between the two conveyors.

La figure 9 illustre le dispositif d'extraction 61 et les deux convoyeurs 62, 63 alors que le dispositif d'extraction 61 est dans la position illustrée aux figures 7 et 8C, une boîte 1' en position couchée étant en prise avec la plaque 24.The figure 9 illustrates the extraction device 61 and the two conveyors 62, 63 while the extraction device 61 is in the position illustrated in figures 7 and 8C , a box 1 'in the supine position being engaged with the plate 24.

La figure 10 illustre quant à elle le dispositif d'extraction dans la position illustrée aux figures 6 et 8F, une boîte 1' étant présente debout sur la plaque 24 en position aplatie.The figure 10 illustrates the extraction device in the position illustrated in figures 6 and 8F , a box 1 'being present standing on the plate 24 in a flattened position.

Il est maintenant fait référence aux figures 11A à 11G pour décrire un exemple de mise en œuvre du transfert sur un convoyeur d'une boîte 1' extraite du mandrin 51 et présente sur le dispositif d'extraction 61, dans la position illustrée à la figure 10.Reference is now made to figures 11A to 11G to describe an example of implementation of the transfer on a conveyor of a box 1 'extracted from the mandrel 51 and present on the extraction device 61, in the position illustrated in figure 10 .

Ce transfert est ici réalisé au moyen d'un dispositif 65 comportant un bras 550 mobile en rotation autour d'un axe 651 fixe par rapport au bâti 21 et sensiblement vertical, c'est-à-dire sensiblement perpendiculaire à la table 41 ou encore à la face d'application 510 du mandrin.This transfer is here carried out by means of a device 65 comprising an arm 550 movable in rotation about an axis 651 which is fixed relative to the frame 21 and substantially vertical, that is to say substantially perpendicular to the table 41 or else. to the application face 510 of the mandrel.

Cet axe de rotation 651 s'étend entre les deux convoyeurs 62 et 63, seul ce dernier étant illustré sur les figures 11A à 11G.This axis of rotation 651 extends between the two conveyors 62 and 63, only the latter being illustrated on the figures 11A to 11G .

Le dispositif 65 supporte, à l'extrémité du bras 650 opposée à l'axe 651, une plaque 652 munie de moyens de préhension 653.The device 65 supports, at the end of the arm 650 opposite to the axis 651, a plate 652 provided with gripping means 653.

Comme le montrent les figures 11A et 11E à 11G d'une part et les figures 11B à 11D d'autre part, cette plaque 652 est mobile entre une position rétractée, illustrée par exemple à la figure 11A et une position déployée, illustrée par exemple à la figure 11B.As the figures 11A and 11E to 11G on the one hand and the figures 11B to 11D on the other hand, this plate 652 is movable between a position retracted, illustrated for example on figure 11A and a deployed position, illustrated for example on figure 11B .

La figure 11A illustre donc la boîte 1' sur le dispositif d'extraction 61. La boîte est ouverte et repose par son fond sur la plaque 64 du dispositif d'extraction.The figure 11A therefore illustrates the box 1 ′ on the extraction device 61. The box is open and rests by its bottom on the plate 64 of the extraction device.

La plaque 652 du dispositif d'extraction 65 est alors en regard d'une face latérale de la boîte.The plate 652 of the extraction device 65 is then facing a side face of the box.

La figure 11B illustre l'étape suivante dans laquelle le dispositif 65 est passé dans sa position déployée. Les moyens de préhension 652 sont alors en contact avec la face latérale de la boîte 1'. Ils sont actionnés de façon à saisir la boîte.The figure 11B illustrates the next step in which the device 65 is passed into its deployed position. The gripping means 652 are then in contact with the lateral face of the box 1 '. They are actuated so as to grip the box.

Dans l'étape suivante illustrée à la figure 11C, le dispositif 65 amorce un mouvement de rotation autour de l'axe 651 et dans le sens horaire.In the next step shown in figure 11C , the device 65 initiates a rotational movement around the axis 651 and in the clockwise direction.

Dans sa position illustrée à la figure 11D, le dispositif 65 a achevé son mouvement de rotation de 90° et la boîte 1' se trouve alors en contact ou légèrement au-dessus du convoyeur 63. Les moyens de préhension 652 sont alors désactivés.In its position shown in figure 11D , the device 65 has completed its movement of rotation of 90 ° and the box 1 'is then in contact with or slightly above the conveyor 63. The gripping means 652 are then deactivated.

Dans l'étape suivante illustrée à la figure 11E, le dispositif 65 est passé dans sa position repliée et la boîte 1' est évacuée par le convoyeur 63.In the next step shown in figure 11E , the device 65 is passed into its folded position and the box 1 'is removed by the conveyor 63.

Comme le montre la figure 11F, alors que la boîte 1' poursuit son mouvement sur le convoyeur 63, le dispositif 65 tourne autour de l'axe 651 et dans le sens anti-horaire. A ce moment-là, une nouvelle boîte 1' a été extraite du mandrin 51 par le dispositif d'extraction 61 et se trouve sur ce dernier dans la position illustrée à la figure 10.As shown in the figure 11F , while the box 1 'continues its movement on the conveyor 63, the device 65 rotates around the axis 651 and in the counterclockwise direction. At this time, a new box 1 'was extracted from the mandrel 51 by the device 61 and is located on the latter in the position shown in figure 10 .

La figure 11G illustre la fin du mouvement de rotation de 90° du dispositif 65 qui retrouve la position illustrée à la figure 11A, pour effectuer un nouveau cycle de transfert d'une boîte 1' sur le convoyeur 63.The figure 11G illustrates the end of the 90 ° rotational movement of the device 65 which returns to the position illustrated in figure 11A , to perform a new transfer cycle of a box 1 'on the conveyor 63.

L'invention n'est cependant pas limitée à ce mode de mise en œuvre. En particulier, le dispositif d'extraction 61 pourrait être conçu pour que le système de bras articulés 63 soit mobile en rotation autour d'un axe vertical passant par sa première extrémité 630.The invention is not however limited to this mode of implementation. In particular, the extraction device 61 could be designed so that the system of articulated arms 63 is movable in rotation about a vertical axis passing through its first end 630.

Ainsi, à l'issue de l'étape illustrée à la figure 8F, le dispositif d'extraction étant en position repliée, il pourrait tourner de 90° autour de cet axe vertical. La boîte 1' se trouverait alors en regard d'une extrémité du convoyeur 63. Des moyens complémentaires seraient alors prévus pour réaliser son transfert sur le convoyeur 63.Thus, at the end of the step illustrated in figure 8F , the extraction device being in the folded position, it could rotate 90 ° around this vertical axis. The box 1 'would then be located opposite one end of the conveyor 63. Additional means would then be provided to carry out its transfer to the conveyor 63.

Il résulte de la description qui précède que le dispositif d'extraction selon l'invention permet de faire passer la boîte d'une position couchée à une position debout, la face encore ouverte de la boîte étant alors dirigée vers le haut. La boîte est dans une position stable lorsqu'elle est debout puisqu'elle est en permanence tenue par le dispositif d'extraction lors de son basculement.It follows from the above description that the extraction device according to the invention makes it possible to move the box from a lying position to a standing position, the face of the box which is still open then being directed upwards. The box is in a stable position when it is upright since it is permanently held by the extraction device when it is tilted.

Par ailleurs, la coopération de ce dispositif d'extraction 61 avec des moyens de transfert, comme le dispositif 65, permet de déposer la boîte sur un convoyeur, de façon toujours stable. En effet, ces moyens de transfert, comme le dispositif d'extraction 61, comportent des moyens de préhension, notamment par aspiration.Furthermore, the cooperation of this extraction device 61 with transfer means, such as the device 65, makes it possible to deposit the box on a conveyor, always stable. Indeed, these transfer means, like the extraction device 61, comprise gripping means, in particular by suction.

Ainsi, l'invention évite bien les inconvénients des dispositifs et procédés connus dans l'état de la technique en maintenant en permanence un contact entre la boîte et des moyens de préhension, jusqu'à la dépose de la boîte sur le convoyeur. Ceci contribue à augmenter les cadences pouvant être atteintes avec la machine 20.Thus, the invention avoids the drawbacks of the devices and methods known in the state of the art by permanently maintaining contact between the box and the gripping means, until the box is placed on the conveyor. This contributes to increasing the rates achievable with the machine 20.

On va maintenant décrire le fonctionnement de la machine permettant la formation d'une boîte en référence aux figures.We will now describe the operation of the machine allowing the formation of a box with reference to the figures.

A partir du magasin 31 de stockage de flans, on extrait un premier flan 1 on le fait basculer à l'horizontale.From the store 31 for storing blanks, a first blank 1 is extracted and it is tilted horizontally.

On le lâche alors sur la table 41 et on le positionne précisément sur la table 41.It is then released on the table 41 and it is positioned precisely on the table 41.

Le flan étant immobile, on dépose des lignes d'adhésif sur au moins deux rabats latéraux 16c et 16a, sur la face supérieure du flan, la face inférieure constituant la face imprimée du flan.The blank being stationary, lines of adhesive are deposited on at least two side flaps 16c and 16a, on the upper face of the blank, the lower face constituting the printed face of the blank.

Le flan est ensuite transféré du poste d'encollage vers le poste de formage et l'on procède, lors de ce transfert, au dépôt d'une ligne d'adhésif à proximité du bord libre du volet 3 ou sur la languette 7.The blank is then transferred from the gluing station to the forming station and, during this transfer, a line of adhesive is deposited near the free edge of the shutter 3 or on the tongue 7.

Le flan 1 étant positionné sous le mandrin, on procède à son enroulement autour du mandrin, ici au moyen de deux nacelles 52 et 53. Cependant, ce formage peut être réalisé par tout moyen.The blank 1 being positioned under the mandrel, its winding around the mandrel is carried out, here by means of two boats 52 and 53. However, this forming can be carried out by any means.

A l'issue de l'étape de formage, le volet 3 est collé sur la languette 7 et les rabats latéraux 16a et 16c sont collés sur les rabats 16b et 16d pour former le fond de la boîte sur la face d'extrémité 510 du mandrin. Cette dernière est tournée du côté du module d'extraction 60.At the end of the forming step, the flap 3 is glued on the tongue 7 and the side flaps 16a and 16c are glued on the flaps 16b and 16d to form the bottom of the box on the end face 510 of the mandrel. The latter is turned towards the extraction module 60.

Dans une variante, à l'issue de l'étape de formage, les rabats ne sont pas fixés les uns aux autres, seuls les rabats 16a, 16b et 16d étant pliés.In a variant, at the end of the forming step, the flaps are not fixed to each other, only the flaps 16a, 16b and 16d being folded.

C'est alors le dispositif d'extraction qui procède au repliage du rabat 16c et à la fixation des rabats entre eux, comme illustré sur les figures 8A à 8C.It is then the extraction device which proceeds to the folding of the flap 16c and to the fixing of the flaps together, as illustrated in the figures 8A to 8C .

Le dispositif 61 extrait alors la boîte ainsi formée du mandrin 51, comme cela a été décrit en référence aux figures 8D à 8F, la boîte étant ensuite déposée sur l'un ou l'autre des convoyeurs 62 ou 63, par exemple comme illustré sur les figures 11A à 11G.The device 61 then extracts the box thus formed from the mandrel 51, as has been described with reference to figures 8D to 8F , the box then being placed on one or the other of the conveyors 62 or 63, for example as illustrated in the figures 11A to 11G .

La description qui précède s'applique également à la formation et à l'extraction d'une partie de boîte.The above description also applies to the formation and extraction of a box part.

Bien entendu, ce procédé est mis en œuvre dans le cadre d'un formage successif et automatique de boîtes ou de parties de boîte, de telle sorte que flan n est encollé pendant le formage du flan n - 1.Of course, this method is implemented within the framework of a successive and automatic forming of boxes or parts of boxes, such that blank n is glued during the forming of blank n - 1.

Comme il va de soi et comme il résulte également de ce qui précède, la présente invention n'est pas limitée aux modes de réalisation plus particulièrement décrits. Elle en embrasse au contraire toutes les variantes et notamment celles où le mandrin est à huit côtés et/ou celles où les rabats formant le fond sont rabattus sur le mandrin par des moyens complémentaires.As goes without saying and as it also follows from the foregoing, the present invention is not limited to the embodiments more particularly described. On the contrary, it embraces all the variants thereof and in particular those where the mandrel has eight sides and / or those where the flaps forming the bottom are folded over the mandrel by complementary means.

Claims (17)

  1. Device for removing a box or box part with a polygonal section from a chuck (51) comprising an upper face (511), an application face (510) interconnected by lateral faces and an end face (514), a chuck whereon the box has been previously formed from a blank (1) comprising a series of at least three panels (3 to 6), i.e. two end panels (3, 6) on either side of at least one intermediate panel (4, 5), said panels being interconnected by parallel folding lines (8 to 10) and provided with lateral flaps (13, 16a to 16d), respectively connected to said panels by folding lines (14) perpendicular to the folding lines (8 to 10) connecting said panels, characterised in that it comprises a plate (64) comprising first gripping means (641) and translatably moveable between a deployed position wherein the plate is near the end face (514) of the chuck whereon the lateral flaps (16a to 16d) are intended to be folded and a folded position wherein the plate (64) is away from the chuck (51) and in that the chuck (51) itself is moveable between a first forming position wherein the outer cross-section thereof corresponds to the inner cross-section of the box or box part and a second retracted position wherein the outer cross-section thereof is smaller than the inner cross-section of the box or box part.
  2. Device according to claim 1, characterised in that it comprises an articulated arm system (63) that may be deployed in a direction substantially perpendicular to said end face (514) of the chuck and a first end (630) of which is rigidly connected to the frame (21) of the device and a second end (632) of which supports said plate (64).
  3. Device according to claim 1 or 2, characterised in that said plate (24) is rotatable between a flattened position wherein same is substantially parallel to the application face (510) of the chuck and an upright position wherein same is substantially parallel to said end face (514).
  4. Device according to one of claims 1 to 3, characterised in that the first gripping means (642) comprise suction means.
  5. Device according to one of claims 1 to 4, characterised in that, when the chuck (51) is in the first retracted position thereof, the distance between the upper face (511) and the application face (510) of the chuck is arranged to be smaller than the width of the box or box part.
  6. Device according to one of claims 1 to 5, characterised in that the articulated arm system (63) is rotatable about a vertical axis passing through the first end thereof rigidly connected to the frame.
  7. Method for removing a box or box part with a polygonal section from a chuck, the box or box part resulting from the forming about said chuck (51) of a blank (1) comprising a series of at least three panels (3 to 6), i.e. two end panels (3, 6) on either side of at least one intermediate panel (4, 5), said panels being interconnected by parallel folding lines (8 to 10) and provided with lateral flaps (13, 16a to 16d), respectively connected to said panels by folding lines (14) perpendicular to the folding lines (8 to 10) connecting said panels, said blank (1) having previously been glued at least at the level of two lateral flaps (16a, 16d) and brought under the chuck (51), which is in a first forming position wherein the panels have been wound about the chuck, the outer cross-section of which corresponds to the inner cross-section of the box or box part, characterised in that it comprises the following steps:
    - applying a pressing force on an end face (514) of the chuck whereon lateral flaps (16a à 16d) have previously been folded, for mutually attaching the flaps and forming the bottom of the box or box part the inner surface of which is in contact with the chuck,
    - grasping by suction the bottom of the box or box part thus formed, - reducing the outer section of the chuck so that same is in a second retracted position, and
    - exerting on the outer surface of the bottom a drawing force perpendicular to the end face, by releasing the pressure on the bottom of the box or box part, in order to extract said box or box part from the chuck.
  8. Method according to claim 7, characterised in that after removing the box or box part from the chuck, said box or box part is set back upright vertically and same is transferred to an evacuation station (62, 63).
  9. Method according to claim 7 or 8, characterised in that the box or box part is removed and set back upright by the same means (61).
  10. Method according to claim 9, characterised in that said means (61) also contribute to the transfer of the box or box part to an evacuation station (62, 63).
  11. Method according to claim 9 or 10, characterised in that said means (61) also make it possible to fold down at least one of said flaps on said lateral face of the chuck.
  12. Machine for forming a box or box part with a polygonal section from a blank (1) comprising a series of at least three panels (3 to 6), i.e. two end panels (3, 6) on either side of at least one intermediate panel (4, 5), said panels being interconnected by parallel folding lines (8 to 10) and provided with lateral flaps (13, 16a and 16d), respectively connected to said panels by folding lines (14) perpendicular to the folding lines connecting said panels, comprising:
    - a gluing station (40) wherein an adhesive is deposited on at least two lateral flaps (16a,
    16c),
    - a forming station (50) wherein the panels (3 to 6) are wound about the chuck (51) and flaps being located on the same side of said panels are folded and
    - a removal station comprising a device (61) according to one of claims 1 to 6.
  13. Machine according to claim 12, characterised in that it also comprises a transfer station (65) to at least one evacuation station (62, 63).
  14. Machine according to claim 13, characterised in that the transfer station (65) comprises second means (652) for gripping the box or box part present at the removal station, said second means being rotatable between a first position wherein same are opposite the removal station (61) and a second position wherein same are opposite the evacuation station (62, 63), said second gripping means (652) also being translatably moveable between a deployed position wherein same are intended to be in contact with the box (1') or box part and a retracted position of rest.
  15. Machine according to claim 12 with a device according to claim 6, characterised in that the removal station comprises gripping means (64) translatably moveable between a retracted position and a deployed position.
  16. Machine according to claim 14, characterised in that the second gripping means (652) comprise suction means.
  17. Method for forming a box or box part with a polygonal section, from a blank (1) comprising a set of three panels (3 to 6), interconnected by parallel folding lines (8 to 10) and provided with lateral flaps (13, 16a to 16d), respectively connected to said panels by folding lines (14) perpendicular to the folding lines (8 to 10) connecting said panels, wherein:
    - the blank (1) is glued at least at the level of two lateral flaps (16a, 16c) and brought under a chuck (51),
    - the blank (1) is subsequently formed about the chuck (51) to obtain a box or box part,
    - said box or box part is removed from the chuck (51) by implementing the method according to one of claims 7 to 11,
    - said box or box part being subsequently transferred to an evacuation station (62, 62, 63).
EP17792124.4A 2016-10-11 2017-10-09 Device and method for removing a formed box from a mandrel Active EP3526025B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1659831A FR3057202B1 (en) 2016-10-11 2016-10-11 DEVICE AND METHOD FOR EXTRACTING A BOX FROM A CHUCK.
PCT/FR2017/052762 WO2018069618A1 (en) 2016-10-11 2017-10-09 Device and method for removing a box from a chuck

Publications (2)

Publication Number Publication Date
EP3526025A1 EP3526025A1 (en) 2019-08-21
EP3526025B1 true EP3526025B1 (en) 2020-09-16

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Application Number Title Priority Date Filing Date
EP17792124.4A Active EP3526025B1 (en) 2016-10-11 2017-10-09 Device and method for removing a formed box from a mandrel

Country Status (9)

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US (1) US11198268B2 (en)
EP (1) EP3526025B1 (en)
JP (1) JP7058266B2 (en)
KR (1) KR20190070939A (en)
CA (1) CA3039998A1 (en)
ES (1) ES2831331T3 (en)
FR (1) FR3057202B1 (en)
PH (1) PH12019501051A1 (en)
WO (1) WO2018069618A1 (en)

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Publication number Priority date Publication date Assignee Title
CN108943838A (en) * 2018-09-28 2018-12-07 中科天工（武汉）智能技术有限公司 A kind of the facial tissue feeder and method of carton forming
TWM593368U (en) * 2019-09-06 2020-04-11 長諺工業股份有限公司 Feeding device for unpacking machine
US11019960B1 (en) * 2020-02-03 2021-06-01 Roboburger Enterprises Apparatus and method for preparing cooked food
CA3233381A1 (en) * 2021-10-01 2023-04-06 Clayton COOPER Dunnage production system

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US2515621A (en) * 1948-01-26 1950-07-18 Battle Creek Bread Wrapping Machine Co Stripping mechanism for carton forming machines
CH345236A (en) * 1955-05-05 1960-03-15 Hesser Ag Maschf Machine with at least one folding mandrel of variable cross-section for the production of bags and similar packaging
JPS5336385A (en) * 1976-09-11 1978-04-04 Iijima Kikai Kk Automatic can making apparatus
FR2629012B1 (en) * 1988-03-22 1994-01-14 Embal Systems PROCESS AND MACHINE FOR MAKING POLYGONAL SECTION CRATES IN SHEET MATERIAL AND CRATES THUS OBTAINED
FR2770446B1 (en) * 1997-11-06 1999-12-31 Jean Claude Serre METHOD AND BARREL MACHINE FOR THE VOLUME OF DRUM CASES OR THE LIKE FROM CARDBOARD CUT
FR2829421B1 (en) * 2001-09-12 2004-01-16 Otor Sa MACHINE AND METHOD FOR MAKING A BODY WITH ADJUSTABLE CHUCK
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ITBO20080334A1 (en) * 2008-05-26 2009-11-27 Ct Pack Srl MACHINE FOR FORMATION OF BOXES.
US8961380B2 (en) * 2008-09-12 2015-02-24 H. J. Paul Langen Method and system for forming a carton from a carton blank
JP5661360B2 (en) 2010-07-21 2015-01-28 株式会社日本デキシー Transfer device for paper containers
JP5836484B2 (en) 2011-07-11 2015-12-24 オーアンドアール・カートン・ルンド・アーベー Apparatus and method for the manufacture of containers
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Also Published As

Publication number Publication date
CA3039998A1 (en) 2018-04-19
US11198268B2 (en) 2021-12-14
US20190283356A1 (en) 2019-09-19
PH12019501051A1 (en) 2019-12-02
FR3057202B1 (en) 2019-05-31
WO2018069618A1 (en) 2018-04-19
JP2019530599A (en) 2019-10-24
JP7058266B2 (en) 2022-04-21
ES2831331T3 (en) 2021-06-08
EP3526025A1 (en) 2019-08-21
KR20190070939A (en) 2019-06-21
FR3057202A1 (en) 2018-04-13

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