EP3224147B1 - Method and machine for forming a box by placement on a v-shaped support - Google Patents

Method and machine for forming a box by placement on a v-shaped support Download PDF

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Publication number
EP3224147B1
EP3224147B1 EP15804906.4A EP15804906A EP3224147B1 EP 3224147 B1 EP3224147 B1 EP 3224147B1 EP 15804906 A EP15804906 A EP 15804906A EP 3224147 B1 EP3224147 B1 EP 3224147B1
Authority
EP
European Patent Office
Prior art keywords
box
blank
mandrel
support
horizontal
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.)
Not-in-force
Application number
EP15804906.4A
Other languages
German (de)
French (fr)
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EP3224147A1 (en
Inventor
Eric Schuster
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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Filing date
Publication date
Application filed by DS Smith Packaging France SAS filed Critical DS Smith Packaging France SAS
Publication of EP3224147A1 publication Critical patent/EP3224147A1/en
Application granted granted Critical
Publication of EP3224147B1 publication Critical patent/EP3224147B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/265—Opening, erecting or setting-up boxes, cartons or carton blanks
    • 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
    • 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
    • B31B2110/35—Shape of rigid or semi-rigid containers having a polygonal cross section rectangular, e.g. square
    • 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
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/36—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores

Definitions

  • the present invention relates to a method for forming a box from a blank comprising a series of four main rectangular flaps terminated by a gluing tab, interconnected by fold lines parallel to each other or by intermediate flaps .
  • It also relates to a machine for the formation of such a box.
  • Chucks of variable shape could be made with retractable chucks.
  • the present invention aims to provide a method and a machine for producing a box with mandrel, responding better than those previously known to the requirements of practice, particularly in that it allows for a perfectly squared body, easily to implement while allowing the formation of boxes of different dimensions with the same machine.
  • the invention notably starts from the idea of using a configuration and / or a particular mandrel position and a feeding mode of the blank on it to form a perfectly squared body, which will result in dimensions of shutters that can vary in a simple way.
  • V-edge means a ridge whose tip is directed upwards, to form a corner angle section hat pointed or truncated, the angle of the branches of the V being 90 °.
  • substantially V-shaped section edge means a V-shaped edge whose tip is cut to form a horizontal cut corner with one or more sides, or with a rounded tip.
  • semi-vertical store means a store storing sloping blanks with an angle between 0 and 40 ° relative to the vertical, for example 30 ° (that is to say between 60 and 90 ° relative to the horizontal ), and advantageously 70 °.
  • the space between the guide (for example a metal plate) and the edge corresponds to the thickness of the blank and / or the groove.
  • an actuator embarked on an extraction arm that acts before using the arm allowing the setting V is for example provided.
  • the mandrel is formed by an armature comprising three parallel edges fixed relative to each other, and a moving edge embedded on an ejector piston belonging to the ejection means.
  • the edges are formed by an upper central edge of an inverted V section with a 45 ° angle with the horizontal, by two lateral edges adjustable (in distance) relative to the upper central edge and a lower edge secured to a mobile template, removable.
  • the lateral edges are thus movable along the V slopes of the support and fixable to the desired locations, the template being adaptable to obtain the required section of the box.
  • edges are cut corners.
  • the machine comprises a first removal station on the support, where the blank is released by the extraction means on a first part of the support, means for transferring the blank to bring the blank to a second station.
  • a first removal station on the support, where the blank is released by the extraction means on a first part of the support, means for transferring the blank to bring the blank to a second station.
  • forming on a second part of the support comprising said mandrel, where the tubular body of the body and the bottom are formed, glueing devices for depositing lines of adhesives during the feeding of the blank of the dispensing station to the forming station and means for ejecting the body of the mandrel.
  • the means for ejecting the box include inner pushing means on the inner face of the bottom and outer suction means on the outer face of the bottom.
  • the pusher means are for example a piston or a longitudinal rod actuated longitudinally by a motor and the means sucking suction cups, carried by a plate or a lattice structure, and supplied with vacuum in a manner known per se.
  • the rectifying means of the body comprise a plate in receiving bias of the ejected box having an angle with the horizontal, a forklift plate obliquely from a first lower receiving position to a second high horizontal position, a first lateral pusher means arranged for pushing the box, when the slant plate is in the upper position, on a horizontal top end plate, to put said box to the horizontal, and a second side pusher means perpendicular to the first to put said box to the vertical on a arranged support to bring it to a packaging station.
  • the first and second lateral pusher means are for example pusher cylinders terminated by planar portions of application on the face opposite the body.
  • the machine comprises two articulated arms arranged to apply the adjacent flaps of the first central fold line or central intermediate flap on the upper faces facing the mandrel and the end flaps of the tongue previously glued on the faces lower facing the mandrel.
  • the figure 1 shows a blank 1 of double-sided corrugated cardboard, for example of low grammage ( ⁇ 150 g / m 2) for example of thickness 3 mm intended to form the body C ( Figure 1A ).
  • the blank comprises, in a manner known per se, 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 bottom of the box and a second set of 15 flaps 16 rectangular or substantially rectangular to form the top of the body C after filling.
  • the figure 2 shows another type of flap 17 with eight flaps suitable for forming the box C '( Figure 2A ) eight sides, with cut corners 18.
  • the blank 17 comprises a continuation 19 of four rectangular main shutters 3, 4, 5, 6 interconnected by rectangular intermediate flaps, namely a central intermediate flap 20, two lateral intermediate flaps 21, 22 and an end flap 23, all interconnected and with the main flaps by parallel junction lines 24, and a tongue 7 bonding with the intermediate end flap 23 (of the same dimensions as said last intermediate flap 23).
  • the blank 17 comprises a first set of flaps 26, 27 connected to the main flaps by second fold lines 28 perpendicular to the connecting lines 24, namely rectangular flaps 26 and flaps 27 having lateral edges slanted towards the line 28, to coincide with the cut corners 18 when the flaps are folded, in a known manner.
  • the blank 17 also comprises a second set 29 of flaps identical to the first set 25, but arranged symmetrically with respect to a longitudinal axis of the blank, suitable for forming the top of the box.
  • the blank is extracted by a movement (see figures 4 and 5 ) causing the suction cups to rotate by means of a lever 39 connected to the pivoting axis 35 and a roller 40 moving on a cam 41.
  • the blank 1 has tilted on the order of 110 ° to be positioned horizontally or substantially horizontally above a support 43 V, here forming an angle of 45 ° with the horizontal.
  • the blank 1 (see figure 7 ) is then released by the suction cups 34 (arrow 44) above the support, the tip of the V or upper edge 45 corresponding to the reference edge 8 of the blank (or the reference panel for an eight-sided blank) .
  • two articulated arms 46 (in position not yet folded on the figure 7 ), embedded on the pivoting axis, provide a first formatting of the body.
  • the blank referenced 1 ' is then transferred to this position (see again figure 4 ) to a training mandrel 47 which will be detailed below, in particular with reference to the Figures 10C and 10D , while the next blank 1 begins to be brought.
  • the transfer carriage is for example formed by two articulated rods 48 'and 48 ", namely a connecting rod 48' fixed at one of its ends to an axis secured to an endless belt 49 with reciprocating movements in a known manner, and a connecting rod 48 "articulated at the other end secured to the cleats 51 able to push on the rear edges of the blank to move it horizontally along the support to mandrel 47.
  • the glue is deposited on the bottom flaps and on the gluing tab.
  • the glue is here deposited by guns (not shown) positioned below the transfer.
  • the transfer carried out by the carriage 48 has, as we have seen, a reciprocating movement with an alternating chain or belt 49, in a fixed course (arrow 50) of known type, the final positioning of the blank on the mandrel 47 thus being ensured by example by the three adjustable cleats 51 embedded on the trolley 48.
  • the point before 52 of the transfer corresponds to the alignment of the second fold line 14 of the blank with the front face 53 of the forming mandrel.
  • step A the blank 1 preformed by the support V comes to the front stop.
  • step B there is provided an establishment of an upper tack (not shown) for holding the blank on the mandrel.
  • the movement also ensures a first folding end flaps 3 and 6 or intermediate flaps in the case of eight-sided cashier.
  • step C there is folding of the panel 6 carrying the glue tongue 7 and said tongue.
  • Step E shows the folding of the outer flap 13 located on the front mandrel (step F) pressurized simultaneously of the gluing tab 7 and the bottom (arrows 54 and 55).
  • the pressing system of the bottom opens, which triggers the ejection of the crate formed.
  • a pushing carriage 56 comprising a plate 57 for pressurizing the inside of the bottom of the box is mechanically actuated via the transfer carriage 48 (cf. Figures 5, 6 ) of which it is integral in longitudinal movement.
  • the starting of the carriage is here arranged to release the ejector piston 58 (cf. figure 7 ).
  • the ejection stroke is made by two successive devices, namely a first device in the mandrel (piston 58), which pushes through the bottom of the body, and a second device 59 (see figure 3 ), located outside, which takes the box through a set of 60 suction cups, fixable on the bottom flaps.
  • the box is then brought to the station 61 for recovery and evacuation to a treadmill 62 of a type known in itself.
  • FIGS 9A to 9C show firstly schematically (to the right of the drawings) the end of the formation of the blank 1 around the mandrel 47 to form the box C.
  • the box C is then raised along the slope of the inclined plate 64, by actuating means A (for example a set of hydraulic cylinders) moving the stop or guide plate 64, between a low position of reception of the crate and a high tipping position.
  • actuating means A for example a set of hydraulic cylinders
  • the actuating means of the plate thus form a forklift actuated in a manner known per se.
  • the abutment plate 64 is then tilted vertically ( Figures 9F and 9G ) to laterally push the body C by making it fall on a horizontal plate 65 located at the upper end 66 of the plate 63.
  • pushing means P horizontal in phantom on the Figure 9G
  • hydraulic cylinders for example are actuated according to the arrow 67 to come tilt again this time in vertical position the body C, taking advantage for example of a bar 68 (quaver foot) on the transfer belt 62 to a filling station.
  • the machine 70 comprises a frame or structure 71 forming a platform carrying independent subsets (or modules) assembled to perform the various functions of the method just described.
  • modules are for example identified and positioned by machined studs ensuring reproducibility of assembly.
  • the first module is formed by the frame 71, provided with an electrical cabinet door 72, and the corresponding cabinet 73 comprising a programmable controller known in itself for controlling the machine.
  • the second module 74 is formed by the magazine 75 for semi-vertical storage (70 °) of the blanks to be formed.
  • This comprises two modular chains 76 driven by a pneumatic system 77.
  • the chains 76 are for example coupled to a free wheel 78 and allow to maintain a blank ready to be fed at the front end 79.
  • the blanks are stored with the unprinted side outwards and the inner gluing tab on the left in the direction of travel.
  • the third extraction module 80 (see also figure 10A ) comprises a fork substantially 81 U-shaped curved at the end of its branches, provided with a lower horizontal bar 82 carrying suction cups 83, for example four suction cups, fed vacuum in a known manner, and an upper horizontal bar 84 in the form of a perforated beam.
  • the fork 81 is movable in longitudinal displacement on a longitudinal beam 85 (38 on the Figures 3 to 7 ) between a gripping position 86 and a releasing position 87.
  • the beam 85 comprises in the upper part a cam 88, with progressive slope rising towards the exit of the box, actuation via an articulated arm 89, the lower horizontal bar 82 which mechanically rotates the suction cups around a axis 90 to bring the blank to the horizontal (cf. Figures 4 to 6 ).
  • the machine according to the embodiment of the invention more particularly described here, then comprises a system 91 of transfer-ejection-gate mandrel ( figure 10B ) constituting the removal part.
  • the system 91 comprises the support 92 inverted V, suitable to be located below the central edge of the blank.
  • the V-shaped support for a rectangular box comprises an upper edge 93 forming a 90 ° angle (or beam-shaped of small width equal to that of the cut corner for an eight-sided box) and two parallel upper metal blades 94, symmetrical with respect to a vertical central plane, said blades being located in planes forming an angle of 45 ° with the vertical plane, to form the lateral side primers of the blank (oriented at 45 °).
  • Two longitudinal parallel plates 95, in the extension will serve as a guide support flaps adjacent to the dispensing station.
  • a device for adjusting the height of these slanted plates, for example with chains in noria 97, is provided.
  • the system 91 comprises a mandrel end 98 and a mechanical support 99 comprising two side support posts 100, 101, in the form of triangular plates, stiffened together by two longitudinal longitudinal members 102, namely an end plate 100 and a plate intermediate 101 leaving at its end protrude the edge of the V-shaped support for forming a portion of the mandrel 103.
  • a quadrangular mandrel 103 or octagonal is disposed at the end 98 of the inverted V support which will now be more particularly described with reference to the Figures 10C and 10D .
  • the mandrel 103 comprises a fixed edge 104 V, at the top located in the extension of the upper edge 93 of the system 91 and two adjustable edges 105, 106 shaped angle (here at 90 °) located on both sides other of the central edge at the corresponding distances to coincide with the first fold line 9, 10 or junction 24.
  • the mandrel also comprises a fourth movable edge 107 secured to a plate 108 for ejecting the box and fixed to the angle 109 of said plate, the plate being of equal size (a little smaller) at the bottom of the box. .
  • Plate 108 is removably mounted and configured to accommodate crate sizes, being fixed with a centering pin on the end 110 of a movable rail 111 ejector door.
  • the mandrel is thus composed of a reference edge 104 on which the blank comes to bend at 90 ° to the extraction station, two adjustable edges 105, 106 at right angles or wedges cut according to the type of box, which is adapt on both sides of the reference depending on the size of the box formed, and an edge 107 integral with the ejection plate 108 which is part of the tool according to the section of the box.
  • the system 91 comprises a system 112 for ejecting the body formed by a sliding rule actuated by a chain or belt 114 (chain 49 on the Figures 3 to 6 ) in known manner, moving back and forth.
  • means 115 for gluing comprising a reservoir 116 of hot melt glue and three injecting guns 117 (shown schematically in dashed line on the Figure 10C ) to deposit lines of glue on the bottom flaps and on the gluing tab.
  • the Figures 10E and 10F show the modules 118 and 119 respectively volume setting of the blank around the mandrel and bottom plating.
  • the module 118 comprises two articulated arms 120 and 121 comprising a vertical support part 122, vertically movable in a manner known per se, to which the two pivoting arms are attached.
  • Each arm comprises a rod 123, 124 provided with an intermediate hinge 125, 126 allowing the folding of the end panels or intermediate (box with eight sides) and a distal chord 127, 128. They are provided at their respective end portions of application pads 129, 130 for folding the top flap (129) and the flap bearing the sticking tongue and said bonding tab (130).
  • the module 119 comprises (cf. figure 10F ) an inverted V-shaped structure 131 with two lateral arms 132 and 133 and a movable piece 134 in the form of a plate 135 movable, for example by jack 136 for simultaneous pressing of the glue tab and the bottom.
  • Gluing is carried out with the guns inside the flaps and the tongue.
  • the walls are then formed and the belt is closed by plating on the sides with the module 118.
  • the ejection system is then engaged and the box slanted, pushed on one side on the inner face of the bottom and sucked on the other side by the outer face, comes to the station 61 tilting and evacuation of the body open, which is then straightened vertically.
  • the present invention is not limited to the embodiments more particularly described. On the contrary, it embraces all the variants and in particular those where the tilting of the blanks is performed differently.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Cartons (AREA)

Description

La présente invention concerne un procédé pour la formation d'une caisse à partir d'un flan comportant une suite de quatre volets rectangulaires principaux terminée par une languette de collage, reliés entre eux par des lignes de pliage parallèles entre elles ou par des volets intermédiaires.The present invention relates to a method for forming a box from a blank comprising a series of four main rectangular flaps terminated by a gluing tab, interconnected by fold lines parallel to each other or by intermediate flaps .

Elle concerne également une machine pour la formation d'une telle caisse.It also relates to a machine for the formation of such a box.

Elle trouve une application particulièrement importante bien que non exclusive dans le domaine de l'emballage d'objets ou de groupes d'objets introduits par le haut dans l'emballage préformé, la fermeture de l'emballage étant réalisée ultérieurement par exemple par un couvercle rapporté.It finds a particularly important application although not exclusive in the field of the packaging of objects or groups of objects introduced from above into the preformed packaging, the closing of the packaging being performed later for example by a lid reported.

On connaît déjà ( US A 4,932,930 ) une machine et un procédé permettant une telle formation de caisse en utilisant un mandrin.We already know ( US A 4,932,930 a machine and method for such crate formation using a mandrel.

Une telle machine, si elle donne satisfaction en permettant notamment une fabrication rapide de caisses, par exemple quarante caisses à la minute, présente certains inconvénients.Such a machine, if it gives satisfaction by allowing a rapid manufacture of cases, for example forty cases per minute, has some disadvantages.

En effet, elle n'est utilisable qu'avec des tailles de mandrins spécifiquement fabriqués pour des flans de dimensions et de volumes déterminés.In fact, it can only be used with mandrel sizes specifically manufactured for blanks of given dimensions and volumes.

On a pu réaliser des mandrins de forme variable avec des mandrins rétractables.Chucks of variable shape could be made with retractable chucks.

Ceux-ci présentent cependant encore des inconvénients car ils nécessitent des ajustements de la taille du mandrin complexes permettant le déplacement relatif entre les différentes arêtes de ce dernier.These, however, still have drawbacks because they require complex mandrel size adjustments allowing the relative displacement between the different edges of the latter.

La présente invention vise à fournir un procédé et une machine pour la réalisation d'une caisse avec mandrin, répondant mieux que ceux antérieurement connus aux exigences de la pratique, notamment en ce qu'elle permet de réaliser une caisse parfaitement équerrée, de façon aisée à mettre en oeuvre tout en autorisant le formage de boîtes de dimensions différentes avec la même machine.The present invention aims to provide a method and a machine for producing a box with mandrel, responding better than those previously known to the requirements of practice, particularly in that it allows for a perfectly squared body, easily to implement while allowing the formation of boxes of different dimensions with the same machine.

Pour ce faire l'invention part notamment de l'idée d'utiliser une configuration et/ou une position de mandrin particulière et un mode d'alimentation du flan sur celui-ci pour former une caisse parfaitement équerrée, qui va entrainer des dimensions de volets pouvant varier de façon simple.To do this, the invention notably starts from the idea of using a configuration and / or a particular mandrel position and a feeding mode of the blank on it to form a perfectly squared body, which will result in dimensions of shutters that can vary in a simple way.

Avec l'invention on obtient ainsi une grande modularité et ce avec une précision tout à fait suffisante, et une bonne solidité de la caisse obtenue, du fait d'un excellent encollage.
Dans ce but l'invention propose notamment un procédé pour la formation d'une caisse à partir d'un flan comportant une suite de quatre volets rectangulaires principaux terminée par une languette de collage, reliés entre eux par des premières lignes de pliage parallèles entre elles ou par des volets intermédiaires, à savoir une première ligne de pliage centrale ou un premier volet intermédiaire central, deux première lignes de pliage latérales ou deux volets intermédiaires latéraux et une première ligne de pliage de languette ou un volet latéral d'extrémité, et comprenant un ensemble de rabats latéraux reliés à un coté de ladite suite par des secondes lignes de pliage perpendiculaires aux premières lignes de pliage, pour former le fond de la caisse,
caractérisé en ce que

  • on extrait par aspiration le flan à partir d'un magasin de stockage (par exemple vertical ou semi-vertical),
  • on amène le flan à l'horizontal au-dessus d'un support présentant une arête supérieure de section transversale en V ou sensiblement en forme de V et des faces correspondantes aux volets principaux inclinées par rapport à l'horizontal d'un angle α déterminé, de sorte que la première ligne de pliage centrale ou le volet intermédiaire central, dits de référence, soit en vis à vis de ladite arête,
  • on dépose le flan sur le support de sorte que la ligne de pliage ou le volet intermédiaire de référence coïncide ou coïncide sensiblement avec la dite arête,
  • on applique ensuite le flan sur un mandrin polygonal dont l'arrête supérieure coïncide et/ou est dans le prolongement de l'arrête supérieure du support, ledit mandrin étant de forme complémentaire à celle de la caisse, en appliquant les volets adjacents à ladite première ligne de pliage ou audit volet intermédiaire de référence sur les faces supérieures en vis à vis du mandrin et les volets d'extrémité et la languette préalablement encollés sur les faces inférieures en vis à vis dudit mandrin, pour former un corps de caisse tubulaire en biais par rapport à l'horizontal,
  • on forme le fond de la caisse par pliage et application des rabats les uns sur les autres après encollage,
  • on éjecte la caisse en biais ainsi formée,
  • on la redresse puis on la transfert à un poste de remplissage.
With the invention is thus obtained a great modularity and with a sufficient accuracy, and a good strength of the body obtained, due to excellent gluing.
For this purpose the invention proposes in particular a method for forming a box from a blank comprising a series of four main rectangular flaps terminated by a gluing tab, interconnected by first fold lines parallel to each other. or by intermediate flaps, namely a first central fold line or a first central intermediate flap, two first lateral fold lines or two lateral intermediate flaps and a first tab fold line or an end lateral flap, and comprising a set of side flaps connected to one side of said sequence by second fold lines perpendicular to the first fold lines, to form the bottom of the box,
characterized in that
  • extracting the blank from a storage magazine (for example vertical or semi-vertical),
  • the blank is brought horizontally above a support having an upper edge of V or substantially V-shaped cross-section and corresponding faces to the principal flaps inclined relative to the horizontal by a determined angle α , so that the first central fold line or central intermediate flap, referred to as reference, is opposite said edge,
  • the blank is deposited on the support so that the folding line or the reference intermediate flap coincides or substantially coincides with said edge,
  • the blank is then applied to a polygonal mandrel whose upper edge coincides and / or is in the extension of the upper edge of the support, said mandrel being of complementary shape to that of the body, by applying the flaps adjacent to said first fold line or said intermediate reference flap on the upper faces facing the mandrel and the end flaps and the tongue previously glued on the lower faces facing said mandrel, to form a tubular body slant body compared to the horizontal,
  • the bottom of the box is formed by folding and applying the flaps to one another after gluing,
  • we eject the fund slant thus formed,
  • it is straightened and then transferred to a filling station.

En alimentant le flan par le dessus sur un support en coin dont une arête de référence est déjà préformée et fixe, par simple dépose du flan au niveau de sa partie centrale, celui-ci va naturellement venir prendre une première position équilibrée ou sensiblement équilibrée sur le support par gravité notamment et/ou par un simple placage sans que cela ne pose de problèmes de précision sur l'ajustement des arêtes puis ensuite autoriser un enrobage symétrique ou sensiblement symétrique autour du mandrin, ce dernier présentant une arête supérieure également en V confondue ou dans le prolongement de celle du support.By feeding the blank from above on a corner support whose reference edge is already preformed and fixed, simply by removing the blank at its central portion, it will naturally come to take a balanced or substantially balanced first position on the support by gravity in particular and / or by simple plating without this posing any problems of precision on the adjustment of the edges and then allow a symmetrical or substantially symmetrical coating around the mandrel, the latter having an upper edge also in V confused or in the extension of that of the support.

En d'autres, termes on utilise ici la gravité et l'équilibre de poids qui va exister naturellement entre les deux parties latérales du flan qui, lorsqu'il va être lâché ou appliqué sur l'arête supérieure du V inversé, va naturellement s'équilibrer comme sur la lame ou la tranche fine d'un élément coupant et ensuite permettre l'enrobage comme revendiqué, de façon aisée.In other words, we use here the gravity and the balance of weight that will naturally exist between the two lateral parts of the blank which, when it is going to be dropped or applied on the upper edge of the inverted V, naturally goes balance as on the blade or thin slice of a cutting element and then allow the coating as claimed, easily.

Par arête en V, on entend une arête dont la pointe est dirigée vers le haut, pour former une cornière d'angle de section en forme de chapeau pointu ou tronqué, l'angle des branches du V étant de 90°.V-edge means a ridge whose tip is directed upwards, to form a corner angle section hat pointed or truncated, the angle of the branches of the V being 90 °.

Par arête de section sensiblement en forme de V, on entend une arête en V dont la pointe est sectionnée pour former un coin coupé horizontal à un ou plusieurs pans, ou encore avec une pointe arrondie.By substantially V-shaped section edge, means a V-shaped edge whose tip is cut to form a horizontal cut corner with one or more sides, or with a rounded tip.

Par magasin semi-vertical, on entend un magasin stockant les flans inclinés avec un angle compris entre 0 et 40° par rapport à la verticale, par exemple 30° (c'est à dire entre 60 et 90° par rapport à l'horizontal), et avantageusement 70°.By semi-vertical store means a store storing sloping blanks with an angle between 0 and 40 ° relative to the vertical, for example 30 ° (that is to say between 60 and 90 ° relative to the horizontal ), and advantageously 70 °.

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

  • on dépose le flan sur un support présentant ou délimitant des faces correspondantes aux volets principaux inclinées selon l'angle α compris entre 30° et 60° et avantageusement égal à 45° par rapport à l'horizontal ;
  • on dépose la première ligne de pliage ou le volet intermédiaire de référence du support en lâchant le flan qui tombe sur l'arête supérieure par gravité ;
  • on dépose la première ligne de pliage ou le volet intermédiaire de référence sur l'arête supérieure du support en guidant le flan à frottement (c'est à dire simplement en l'amenant en contact sans appui) sur le dessus de l'arête.
In advantageous embodiments, one or more of the following provisions are also, and / or in addition, used:
  • the blank is deposited on a support presenting or delimiting faces corresponding to the main flaps inclined at the angle α of between 30 ° and 60 ° and advantageously equal to 45 ° with respect to the horizontal;
  • depositing the first fold line or the reference intermediate flap of the support by releasing the blank which falls on the upper edge by gravity;
  • depositing the first fold line or the reference intermediate flap on the upper edge of the support by guiding the friction blank (that is to say simply by bringing it into contact without support) on the top of the edge.

Pour ce faire l'espace entre le guide (par exemple une plaque métallique) et l'arête correspond à l'épaisseur du flan et/ou de la cannelure.To do this the space between the guide (for example a metal plate) and the edge corresponds to the thickness of the blank and / or the groove.

On peut également exercer une pression un peu supérieure correspondante à celle du guide en appuyant légèrement sur la ligne de pliage elle-même, par compression sur l'arête de référence et/ou sur les volets adjacents. Avantageusement cette compression est légère c'est à dire qu'elle n'est que de quelques grammes, par exemple entre 10 et 20 grammes.

  • on dépose la première ligne de pliage ou le volet intermédiaire de référence sur l'arête supérieure du support en exerçant une pression suffisante pour permettre un plaquage sur les bords de l'arrête supérieure ou sur la surface correspondant au volet intermédiaire de référence.
It is also possible to exert a slightly higher pressure corresponding to that of the guide by slightly pressing on the fold line itself, by compression on the reference edge and / or on the adjacent flaps. Advantageously this compression is light that is to say that it is only a few grams, for example between 10 and 20 grams.
  • depositing the first folding line or the reference intermediate flap on the upper edge of the support by exerting a sufficient pressure to allow a plating on the edges of the upper edge or on the surface corresponding to the intermediate reference flap.

Pour ce faire, un actionneur embarqué sur un bras d'extraction qui agit avant l'aide du bras permettant la mise en V est par exemple prévu.To do this, an actuator embarked on an extraction arm that acts before using the arm allowing the setting V is for example provided.

Un tel système est particulièrement avantageux en cas de papier lourd ou présentant des rainants (ligne de pliage) insuffisamment marqués ;

  • on dépose le flan à un premier poste de dépose sur le support, on transfert le flan en l'encollant et on forme le corps tubulaire de la caisse et le fond à un deuxième poste de formage sur le mandrin, avant son éjection ;
  • pour éjecter la caisse, on pousse sur le fond formé et pour la redresser on la fait tomber sur une plaque inclinée, on la soulève en biais avec un élévateur et on la fait basculer en la poussant latéralement sur une plaque horizontale d'extrémité supérieure pour la mettre à l'horizontal, avant de la faire à nouveau basculer à la vertical sur un tapis de transfert.
Avantageusement la plaque inclinée forme un angle de 45° par rapport à l'horizontal ;
  • on applique les volets adjacents de ladite première ligne de pliage centrale sur les faces supérieures en vis à vis du mandrin et les volets d'extrémité et la languette préalablement encollés sur les faces inférieures en vis à vis dudit mandrin, par deux bras articulés.
Such a system is particularly advantageous in case of heavy paper or having not sufficiently marked ribs (fold line);
  • the blank is deposited at a first removal station on the support, the blank is transferred by gluing it and the tubular body of the box is formed and the bottom is formed at a second forming station on the mandrel, before it is ejected;
  • to eject the box, push on the bottom formed and to straighten it is dropped on an inclined plate, it is lifted at an angle with an elevator and is tilted by pushing it laterally on a horizontal top end plate for put it horizontally, before making it tilt vertically again on a transfer mat.
Advantageously, the inclined plate forms an angle of 45 ° with respect to the horizontal;
  • the adjacent flaps of said first central fold line are applied to the upper faces facing the mandrel and the shutters end and tongue pre-glued on the lower faces facing said mandrel, by two articulated arms.

L'invention propose également une machine mettant en oeuvre le procédé décrit ci-dessus.
Elle propose aussi une machine pour la formation d'une caisse à partir d'un flan comportant une suite de quatre volets rectangulaires principaux terminée par une languette de collage, reliés entre eux par des premières lignes de pliage parallèles entre elles ou par des volets intermédiaires rectangulaires, à savoir une première ligne de pliage centrale ou un premier volet intermédiaire central, deux première lignes de pliage latérales ou deux volets intermédiaires latéraux et une première ligne de pliage de languette ou un volet latéral d'extrémité, et comprenant un ensemble de rabats latéraux reliés à un coté de ladite suite par des secondes lignes de pliage perpendiculaires aux premières lignes de pliage, pour former le fond de la caisse,
caractérisé en ce que elle comprend :

  • des moyens d'extraction par aspiration du flan à partir d'un magasin de stockage et d'amenée du flan à l'horizontal au-dessus d'un support,
  • ledit support présentant une arête supérieure de section en forme de V ou sensiblement en forme de V et des faces adjacentes correspondantes aux volets principaux inclinées par rapport à l'horizontal d'un angle α déterminé, lesdits moyens d'extraction et d'amenée étant agencés pour que la première ligne de pliage centrale ou le volet intermédiaire central dits de référence soit en vis à vis de ladite arête,
  • des moyens de commande de dépose du flan sur le support, de sorte que la ligne de pliage ou le volet intermédiaire de référence coïncide ou coïncide sensiblement avec la dite arête,
  • des moyens de formage de la caisse coïncidant avec le, ou dans le prolongement du, support comprenant un mandrin polygonal de forme complémentaire à celle de la caisse,
  • des moyens d'encollage des rabats et de la languette de collage,
  • des moyens d'application des volets adjacents à ladite première ligne de pliage ou audit volet intermédiaire de référence sur les faces supérieures en vis à vis du mandrin et des volets d'extrémité et de la languette préalablement encollés sur les faces inférieures en vis à vis dudit mandrin, pour former un corps de caisse tubulaire en biais par rapport à l'horizontal,
  • des moyens de plaquage des rabats pour former le fond de la caisse par pliage et application des rabats les uns sur les autres après encollage,
  • des moyens d'éjection de la caisse en biais ainsi formée,
  • des moyens de redressement de la caisse et de transfert de ladite caisse à un poste de remplissage.
The invention also proposes a machine implementing the method described above.
It also proposes a machine for the formation of a box from a blank comprising a series of four rectangular main shutters terminated by a gluing tab, interconnected by first fold lines parallel to each other or by intermediate flaps rectangular, namely a first central folding line or a first central intermediate flap, two first lateral folding lines or two lateral intermediate flaps and a first tab folding line or an end lateral flap, and comprising a set of flaps laterally connected to one side of said suite by second fold lines perpendicular to the first fold lines, to form the bottom of the box,
characterized in that it comprises:
  • means for extracting the blank from a storage magazine and bringing the blank horizontally above a support,
  • said support having an upper edge of V-shaped or substantially V-shaped section and adjacent faces corresponding to the main flaps inclined relative to the horizontal by a determined angle α, said extraction and feeding means being arranged so that the first central fold line or the central central reference shutter is opposite said edge,
  • control means for removing the blank on the support, so that the folding line or the intermediate reference flap coincides or substantially coincides with said edge,
  • means for forming the box coinciding with, or in the extension of, the support comprising a polygonal mandrel of a shape complementary to that of the body,
  • means for gluing the flaps and the glue tongue,
  • means for applying flaps adjacent to said first fold line or to said intermediate reference flap on the upper faces facing the mandrel and the end flaps and tongue previously glued on the lower faces facing each other; said mandrel, to form a tubular body body obliquely to the horizontal,
  • means for plating the flaps to form the bottom of the box by folding and applying the flaps to one another after gluing,
  • ejection means of the slant box thus formed,
  • means for recovery of the body and transfer of said body to a filling station.

Avantageusement le mandrin est formé par une armature comportant trois arêtes parallèles fixées les unes par rapport aux autres, et une arête mobile embarquée sur un piston éjecteur appartenant aux moyens d'éjection.Advantageously, the mandrel is formed by an armature comprising three parallel edges fixed relative to each other, and a moving edge embedded on an ejector piston belonging to the ejection means.

Dans un mode de réalisation avantageux les arêtes sont formées par une arête centrale supérieure de section en V inversé d'angle de 45° avec l'horizontal, par deux arêtes latérales réglables (en distance) par rapport à l'arête centrale supérieure et par une arête inférieure solidaire d'un gabarit mobile, amovible. Les arêtes latérales sont ainsi déplaçables le long des pentes en V du support et fixables aux emplacements souhaités, le gabarit étant quant à lui adaptable pour obtenir la section de la caisse recherchée.In an advantageous embodiment, the edges are formed by an upper central edge of an inverted V section with a 45 ° angle with the horizontal, by two lateral edges adjustable (in distance) relative to the upper central edge and a lower edge secured to a mobile template, removable. The lateral edges are thus movable along the V slopes of the support and fixable to the desired locations, the template being adaptable to obtain the required section of the box.

Avantageusement également les arêtes sont à coins coupées.Advantageously also the edges are cut corners.

Dans un mode de réalisation avantageux la machine comprend un premier poste de dépose sur le support, ou le flan est lâché par les moyens d'extraction sur une première partie du support, des moyens de transferts du flan pour amener le flan à un deuxième poste de formage sur une deuxième partie du support comportant ledit mandrin, où on forme le corps tubulaire de la caisse et le fond, des encolleurs permettant de déposer des lignes d'adhésifs pendant l'amenée du flan du poste de dépose au poste de formage et des moyens d'éjection de la caisse du mandrin.In an advantageous embodiment, the machine comprises a first removal station on the support, where the blank is released by the extraction means on a first part of the support, means for transferring the blank to bring the blank to a second station. forming on a second part of the support comprising said mandrel, where the tubular body of the body and the bottom are formed, glueing devices for depositing lines of adhesives during the feeding of the blank of the dispensing station to the forming station and means for ejecting the body of the mandrel.

Encore avantageusement les moyens d'éjection de la caisse comprennent des moyens pousseurs intérieurs sur la face intérieure du fond et des moyens aspirant extérieurs sur la face extérieure du fond.Still advantageously, the means for ejecting the box include inner pushing means on the inner face of the bottom and outer suction means on the outer face of the bottom.

Les moyens pousseurs sont par exemple un piston ou une tige longitudinale actionné longitudinalement par un moteur et les moyens aspirant des ventouses, portés par une plaque ou une structure en treillis, et alimentés en vide de façon connue en elle-même.The pusher means are for example a piston or a longitudinal rod actuated longitudinally by a motor and the means sucking suction cups, carried by a plate or a lattice structure, and supplied with vacuum in a manner known per se.

Dans un mode de réalisation avantageux les moyens redresseurs de la caisse comportent une plaque en biais de réception de la caisse éjectée présentant un angle avec l'horizontal, un chariot élévateur de la plaque en biais d'une première position basse de réception à une seconde position haute de mise à l'horizontal, un premier moyen pousseur latéral agencé pour pousser la caisse, lorsque la plaque en biais est en position haute, sur une plaque horizontale d'extrémité supérieure, pour mettre ladite caisse à l'horizontal, et un second moyen pousseur latéral perpendiculaire au premier pour mettre ladite caisse à la vertical sur un support agencé pour l'amener vers un poste de conditionnement.In an advantageous embodiment, the rectifying means of the body comprise a plate in receiving bias of the ejected box having an angle with the horizontal, a forklift plate obliquely from a first lower receiving position to a second high horizontal position, a first lateral pusher means arranged for pushing the box, when the slant plate is in the upper position, on a horizontal top end plate, to put said box to the horizontal, and a second side pusher means perpendicular to the first to put said box to the vertical on a arranged support to bring it to a packaging station.

Les premiers et second moyens pousseurs latéraux sont par exemple des vérins pousseurs terminés par des portions plans d'application sur la face en vis à vis de la caisse.The first and second lateral pusher means are for example pusher cylinders terminated by planar portions of application on the face opposite the body.

Egalement avantageusement la machine comporte deux bras articulés agencés pour appliquer les volets adjacents de la première ligne de pliage central ou du volet intermédiaire central sur les faces supérieures en vis à vis du mandrin et les volets d'extrémité de la languette préalablement encollée sur les faces inférieures en vis à vis du mandrin.Also advantageously the machine comprises two articulated arms arranged to apply the adjacent flaps of the first central fold line or central intermediate flap on the upper faces facing the mandrel and the end flaps of the tongue previously glued on the faces lower facing the mandrel.

L'invention sera mieux comprise à la lecture de la description qui suit de modes de réalisation donnés ci-après à titre d'exemples non limitatifs.The invention will be better understood on reading the following description of embodiments given below by way of non-limiting examples.

La description se réfère aux dessins qui l'accompagnent dans lesquels :

  • Les figures 1 et 2 montrent en vue de dessus deux modes de réalisation de flans utilisables avec le procédé et la machine selon l'invention.
  • Les figures 1A et 2A sont des vues en perspective des caisses obtenues à partir des flans des figures 1 et 2 formées avec le procédé selon l'invention.
  • Les figures 3 à 7 montrent en vue schématique latérale les étapes principales mises en oeuvre avec le procédé selon le mode de réalisation de l'invention plus particulièrement décrit ici.
  • La figure 8 donne les étapes A à F de formage de la caisse autour du mandrin selon un mode de réalisation de l'invention.
  • Les figures 9A à 9H illustrent quant à elles schématiquement et en perspective les étapes finales du procédé de basculement et de renversement de la caisse en fin de formation vers un poste suivant mis en oeuvre dans un mode de réalisation de l'invention.
  • La figure 10 est une vue générale en perspective d'une machine selon le mode de réalisation de l'invention plus particulièrement décrit ici.
  • La figure 10A est une vue en perspective d'un mode de réalisation des moyens d'extraction et de dépose de flans appartenant à la machine de la figure 10.
  • La figure 10B montre quant à elle une vue en perspective du support en V de la figure 10, selon le mode de réalisation de l'invention plus particulièrement décrit ici.
  • Les figures 10C et 10D sont des vues en perspective de l'extrémité du support en V et du mandrin selon un mode de réalisation de l'invention utilisable avec la machine de la figure 10 respectivement en position de formation et en position d'éjection.
  • La figure 10E est une vue en perspective d'un mode de réalisation des moyens d'application des volets sur le mandrin de la machine de la figure 10, comprenant deux bras articulés.
  • La figure 10F montre un mode de réalisation des moyens permettant de former le fond de caisse appartenant à la machine de la figure 10.
The description refers to the accompanying drawings in which:
  • The Figures 1 and 2 show in plan view two embodiments of blanks usable with the method and the machine according to the invention.
  • The Figures 1A and 2A are perspective views of the crates obtained from the blanks of the Figures 1 and 2 formed with the process according to the invention.
  • The Figures 3 to 7 show in schematic side view the main steps implemented with the method according to the embodiment of the invention more particularly described here.
  • The figure 8 gives the steps A to F of forming the box around the mandrel according to one embodiment of the invention.
  • The Figures 9A to 9H illustrate diagrammatically and in perspective the final stages of the tilting and reversal process of the box at the end of training to a next station implemented in one embodiment of the invention.
  • The figure 10 is a general perspective view of a machine according to the embodiment of the invention more particularly described here.
  • The figure 10A is a perspective view of an embodiment of the means for extracting and removing blanks belonging to the machine of the figure 10 .
  • The figure 10B shows a perspective view of the V bracket of the figure 10 , according to the embodiment of the invention more particularly described here.
  • The Figures 10C and 10D are perspective views of the end of the V-support and the mandrel according to an embodiment of the invention that can be used with the machine of the figure 10 respectively in the forming position and in the ejection position.
  • The figure 10E is a perspective view of one embodiment of the application means of the shutters on the chuck of the machine the figure 10 , comprising two articulated arms.
  • The figure 10F shows an embodiment of the means for forming the bottom of the machine belonging to the machine of the figure 10 .

La figure 1 montre un flan 1 en carton ondulé double face, par exemple à faible grammage (< 150 g/m2) par exemple d'épaisseur 3 mm destiné à former la caisse C (figure 1A).The figure 1 shows a blank 1 of double-sided corrugated cardboard, for example of low grammage (<150 g / m 2) for example of thickness 3 mm intended to form the body C ( Figure 1A ).

Il comporte une suite 2 de quatre volets principaux rectangulaires 3, 4, 5, 6 terminée 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 rectangular main 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.

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 fond de la caisse et un deuxième jeu 15 de rabats 16 rectangulaires ou sensiblement rectangulaires propres à former le dessus de la caisse C après remplissage.The blank comprises, in a manner known per se, 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 bottom of the box and a second set of 15 flaps 16 rectangular or substantially rectangular to form the top of the body C after filling.

Dans la suite on utilisera les mêmes numéros de références pour désigner les mêmes éléments ou des éléments similaires.In the following we will use the same reference numbers to designate the same elements or similar elements.

La figure 2 montre un autre type de flan 17 à huit volets propre à former la caisse C' (figure 2A) à huit côtés, à coins coupés 18.The figure 2 shows another type of flap 17 with eight flaps suitable for forming the box C '( Figure 2A ) eight sides, with cut corners 18.

Le flan 17 comprend une suite 19 de quatre volets principaux rectangulaires 3, 4, 5, 6 reliés entre eux par des volets intermédiaires rectangulaires, à savoir un volet intermédiaire central 20, deux volets intermédiaires latéraux 21, 22 et un volet d'extrémité 23, tous reliés entre eux et avec les volets principaux par des lignes de jonction parallèles 24, et une languette 7 de collage avec le volet intermédiaire d'extrémité 23 (de mêmes dimensions que ledit dernier volet intermédiaire 23).The blank 17 comprises a continuation 19 of four rectangular main shutters 3, 4, 5, 6 interconnected by rectangular intermediate flaps, namely a central intermediate flap 20, two lateral intermediate flaps 21, 22 and an end flap 23, all interconnected and with the main flaps by parallel junction lines 24, and a tongue 7 bonding with the intermediate end flap 23 (of the same dimensions as said last intermediate flap 23).

Le flan 17 comprend un premier jeu 25 de rabats 26, 27 reliés aux volets principaux par des deuxièmes lignes de pliage 28 perpendiculaires aux lignes de jonction 24, à savoir des rabats rectangulaires 26 et des rabats 27 présentant des bords latéraux en biais vers la ligne de pliage 28, pour coïncider avec les coins coupés 18 lorsque les rabats sont repliés, de façon connue.The blank 17 comprises a first set of flaps 26, 27 connected to the main flaps by second fold lines 28 perpendicular to the connecting lines 24, namely rectangular flaps 26 and flaps 27 having lateral edges slanted towards the line 28, to coincide with the cut corners 18 when the flaps are folded, in a known manner.

Le flan 17 comprend également un deuxième jeu 29 de rabats identique au premier jeu 25, mais disposé de façon symétrique par rapport à un axe longitudinal du flan, propre à former le dessus de la caisse.The blank 17 also comprises a second set 29 of flaps identical to the first set 25, but arranged symmetrically with respect to a longitudinal axis of the blank, suitable for forming the top of the box.

D'autres modes de réalisation des rabats sont bien entendu envisageables.Other embodiments of the flaps are of course conceivable.

On a représenté sur les figures 3 à 7 les étapes de procédé selon le mode de réalisation de l'invention plus particulièrement décrit ici.We have shown on Figures 3 to 7 the process steps according to the embodiment of the invention more particularly described here.

A partir d'un magasin 30 de flans 31 stockés en position semi-verticale (angle α par exemple de l'ordre de 70°) de façon connue en elle-même, on extrait le flan 1 situé à l'extrémité 32 de la pile par un système 33 à ventouses 34 alimenté en vide de façon connue en elle-même, et monté sur un axe pivotant 35, lui-même installé sur un chariot 36, par exemple à galets, ayant un mouvement linéaire (flèche 37) sur un support ou poutre horizontale 38.From a magazine 30 of blanks 31 stored in semi-vertical position (angle α for example of the order of 70 °) in a manner known per se, the blank 1 at the end 32 of the blank is extracted. battery by a vacuum system 34 supplied with vacuum 34 in a manner known per se, and mounted on a pivoting axis 35, itself installed on a carriage 36, by example with rollers, having a linear movement (arrow 37) on a support or horizontal beam 38.

Le flan est extrait par un mouvement (voir figures 4 et 5) entrainant la rotation des ventouses par l'intermédiaire d'un levier 39 lié à l'axe pivotant 35 et d'un galet 40 se déplaçant sur une came 41.The blank is extracted by a movement (see figures 4 and 5 ) causing the suction cups to rotate by means of a lever 39 connected to the pivoting axis 35 and a roller 40 moving on a cam 41.

Arrivé au point avant 42 (voir figure 6) le flan 1 a basculé de l'ordre de 110° pour être positionné à l'horizontal ou sensiblement à l'horizontal au-dessus d'un support 43 en V, ici formant un angle de 45° avec l'horizontal.At the point before 42 (see figure 6 ) the blank 1 has tilted on the order of 110 ° to be positioned horizontally or substantially horizontally above a support 43 V, here forming an angle of 45 ° with the horizontal.

Le flan 1 (voir figure 7) est alors lâché par les ventouses 34 (flèche 44) au-dessus du support, la pointe du V ou arête supérieure 45 correspondant à l'arête 8 de référence du flan (ou du panneau 20 de référence pour un flan à huit côtés).The blank 1 (see figure 7 ) is then released by the suction cups 34 (arrow 44) above the support, the tip of the V or upper edge 45 corresponding to the reference edge 8 of the blank (or the reference panel for an eight-sided blank) .

Dans le mode de réalisation plus particulièrement décrit, dès que le flan 1 est lâché au poste de dépose D, deux bras articulés 46 (en position non encore rabattue sur la figure 7), embarqués sur l'axe pivotant, assurent une première mise en forme de la caisse.In the embodiment more particularly described, as soon as the blank 1 is released at the station D, two articulated arms 46 (in position not yet folded on the figure 7 ), embedded on the pivoting axis, provide a first formatting of the body.

On transfert ensuite le flan référencé 1' à cette position (cf. à nouveau figure 4) vers un mandrin 47 de formation qui sera détaillé ci-après, notamment en référence aux figures 10C et 10D, pendant que le flan suivant 1 commence à être amené.The blank referenced 1 'is then transferred to this position (see again figure 4 ) to a training mandrel 47 which will be detailed below, in particular with reference to the Figures 10C and 10D , while the next blank 1 begins to be brought.

Dès que le flan est en V, il est pris en charge par un chariot de transfert 48 pour l'amener au poste de formation F.As soon as the blank is in V, it is taken over by a transfer trolley 48 to bring it to the training station F.

Le chariot de transfert est par exemple formé par deux bielles articulées 48' et 48", à savoir une bielle 48' fixée à une de ses extrémités à un axe solidaire d'une courroie 49 sans fin animée de mouvements de va et vient de façon connue, et une bielle 48" articulée à l'autre extrémité solidaire des taquets 51 propres à pousser sur les bords arrières du flan pour le déplacer horizontalement le long du support jusqu'au mandrin 47.The transfer carriage is for example formed by two articulated rods 48 'and 48 ", namely a connecting rod 48' fixed at one of its ends to an axis secured to an endless belt 49 with reciprocating movements in a known manner, and a connecting rod 48 "articulated at the other end secured to the cleats 51 able to push on the rear edges of the blank to move it horizontally along the support to mandrel 47.

Durant ce transfert on dépose la colle sur les rabats de fond et sur la languette de collage.During this transfer, the glue is deposited on the bottom flaps and on the gluing tab.

Le flan étant positionné avec la face imprimée vers le haut, la colle est ici déposée par des pistolets (non représentés) positionnés au-dessous du transfert.With the blank positioned with the printed side up, the glue is here deposited by guns (not shown) positioned below the transfer.

Elle est par exemple assurée par trois pistolets, un pour chacun des rabats de fond inférieurs et un pour la languette.It is for example provided by three guns, one for each bottom bottom flaps and one for the tongue.

Le transfert effectué par le chariot 48 a comme on l'a vu un mouvement translatif à chaîne ou courroie 49, alternatif, selon une course fixe (flèche 50) de type connue, le positionnement final du flan sur le mandrin 47 étant donc assuré par exemple par les trois taquets réglables 51 embarqués sur le chariot 48.The transfer carried out by the carriage 48 has, as we have seen, a reciprocating movement with an alternating chain or belt 49, in a fixed course (arrow 50) of known type, the final positioning of the blank on the mandrel 47 thus being ensured by example by the three adjustable cleats 51 embedded on the trolley 48.

Le point avant 52 du transfert correspond à l'alignement de la deuxième ligne 14 de pliage du flan avec la face avant 53 du mandrin de formation.The point before 52 of the transfer corresponds to the alignment of the second fold line 14 of the blank with the front face 53 of the forming mandrel.

L'arrivée au point avant 52 lance alors le cycle de mise en volume du flan autour du mandrin qui va maintenant être décrit en référence à la figure 8.The arrival at the point before 52 then launches the volume setting cycle of the blank around the mandrel which will now be described with reference to the figure 8 .

A l'étape A le flan 1 préformé par le support en V arrive en butée avant.In step A the blank 1 preformed by the support V comes to the front stop.

A l'étape B, il est prévu une mise en place d'un plaqueur supérieur (non représenté) de maintien du flan sur le mandrin.In step B, there is provided an establishment of an upper tack (not shown) for holding the blank on the mandrel.

Le mouvement assure également un premier pliage des volets 3 et 6 d'extrémité ou des volets intermédiaires en cas de caisse à huit côtés.The movement also ensures a first folding end flaps 3 and 6 or intermediate flaps in the case of eight-sided cashier.

Puis (étape C) il y a pliage du panneau 6 portant la languette de collage 7 et de ladite languette.Then (step C) there is folding of the panel 6 carrying the glue tongue 7 and said tongue.

En D, le volet opposé est replié en même temps que les rabats internes 13.In D, the opposite flap is folded together with the internal flaps 13.

L'étape E montre le pliage du rabat externe 13 situé sur le mandrin avant (étape F) mise en pression simultanée de la languette de collage 7 et du fond (flèches 54 et 55).Step E shows the folding of the outer flap 13 located on the front mandrel (step F) pressurized simultaneously of the gluing tab 7 and the bottom (arrows 54 and 55).

Une fois la caisse formée le système de pressage du fond s'ouvre, ce qui déclenche l'éjection de la caisse formée.Once the crate is formed, the pressing system of the bottom opens, which triggers the ejection of the crate formed.

Pour ce faire (cf. figure 7) un chariot pousseur 56, comprenant une plaque 57 de mise en pression de l'intérieur du fond de la caisse est actionnée mécaniquement par le biais du chariot 48 de transfert (cf. figures 5, 6) dont il est solidaire en mouvement longitudinal.To do this (cf. figure 7 ) a pushing carriage 56 comprising a plate 57 for pressurizing the inside of the bottom of the box is mechanically actuated via the transfer carriage 48 (cf. Figures 5, 6 ) of which it is integral in longitudinal movement.

Le démarrage du chariot est ici agencé pour libérer le piston éjecteur 58 (cf. figure 7).The starting of the carriage is here arranged to release the ejector piston 58 (cf. figure 7 ).

Dans l'exemple plus particulièrement décrit ici, la course d'éjection est faite par deux dispositifs successifs, à savoir un premier dispositif dans le mandrin (piston 58), qui pousse par le fond de caisse, et un second dispositif 59 (voir figure 3), situé à l'extérieur, qui reprend la caisse par le biais d'un ensemble 60 de ventouses aspirantes, fixables sur les rabats de fond.In the example more particularly described here, the ejection stroke is made by two successive devices, namely a first device in the mandrel (piston 58), which pushes through the bottom of the body, and a second device 59 (see figure 3 ), located outside, which takes the box through a set of 60 suction cups, fixable on the bottom flaps.

La caisse est alors amenée au poste 61 de redressement et d'évacuation vers un tapis roulant 62 de type connu en lui-même.The box is then brought to the station 61 for recovery and evacuation to a treadmill 62 of a type known in itself.

L'opération de redressement du poste 61 va maintenant être décrite en référence aux figures 9A à 9H.The straightening operation of station 61 will now be described with reference to Figures 9A to 9H .

Les figures 9A à 9C montrent tout d'abord schématiquement (à droite des dessins) la fin de la formation du flan 1 autour du mandrin 47 pour former la caisse C.The Figures 9A to 9C show firstly schematically (to the right of the drawings) the end of the formation of the blank 1 around the mandrel 47 to form the box C.

La caisse est alors éjectée (figure 9D) par préhension externe et poussée interne jusqu'à une plaque inclinée 63 à 45° munie d'une butée de guidage inférieur (par exemple une plaque 64) parallèle à la caisse sur laquelle elle vient en appui (figure 9E).The cash is then ejected ( Figure 9D ) by external gripping and internal thrust up to a plate inclined 63 to 45 ° provided with a lower guide stop (for example a plate 64) parallel to the box on which it bears ( Figure 9E ).

La caisse C est ensuite remontée le long de la pente de la plaque inclinée 64, par des moyens d'actionnement A (par exemple un jeu de vérins hydrauliques) déplaçant la butée ou plaque de guidage 64, entre une position basse de réception de la caisse et une position haute de basculement.The box C is then raised along the slope of the inclined plate 64, by actuating means A (for example a set of hydraulic cylinders) moving the stop or guide plate 64, between a low position of reception of the crate and a high tipping position.

Les moyens d'actionnement de la plaque forment ainsi un chariot élévateur actionné de façon connue en elle-même.The actuating means of the plate thus form a forklift actuated in a manner known per se.

La plaque 64 de butée est alors basculée verticalement (figures 9F et 9G) pour pousser latéralement la caisse C en la faisant retomber sur une plaque 65 horizontale située à l'extrémité supérieure 66 de la plaque 63.The abutment plate 64 is then tilted vertically ( Figures 9F and 9G ) to laterally push the body C by making it fall on a horizontal plate 65 located at the upper end 66 of the plate 63.

Puis des moyens pousseurs P horizontaux (en traits mixtes sur la figure 9G) (vérins hydrauliques par exemple) sont actionnés suivant la flèche 67 pour venir faire basculer à nouveau cette fois-ci en position verticale la caisse C, en profitant par exemple d'une barre 68 (faisant croche pied), sur le tapis de transfert 62 vers un poste de remplissage.Then pushing means P horizontal (in phantom on the Figure 9G ) (hydraulic cylinders for example) are actuated according to the arrow 67 to come tilt again this time in vertical position the body C, taking advantage for example of a bar 68 (quaver foot) on the transfer belt 62 to a filling station.

On va maintenant décrire en référence aux figures 10 et 10A à 10E une machine 70 (et ses éléments constitutifs principaux) pour formation d'une caisse à partir d'un flan selon le mode de réalisation de l'invention plus particulièrement décrit ici.We will now describe with reference to figures 10 and 10A to 10E a machine 70 (and its main components) for forming a box from a blank according to the embodiment of the invention more particularly described here.

La machine 70 comprend un bâti ou structure 71 formant une plateforme porteuse de sous-ensembles indépendants (ou modules) assemblés pour assurer les différentes fonctions du procédé qui vient d'être décrit.The machine 70 comprises a frame or structure 71 forming a platform carrying independent subsets (or modules) assembled to perform the various functions of the method just described.

Ces modules sont par exemple repérés et positionnés par des plots usinés assurant une reproductibilité de montage.These modules are for example identified and positioned by machined studs ensuring reproducibility of assembly.

Le premier module est formé par le bâti 71, muni d'une porte armoire électrique 72, et de l'armoire correspondante 73 comprenant un automate programmable connu en lui-même de pilotage de la machine.The first module is formed by the frame 71, provided with an electrical cabinet door 72, and the corresponding cabinet 73 comprising a programmable controller known in itself for controlling the machine.

Le deuxième module 74 est formé par le magasin 75 de stockage en semi verticale (70°) des flans à former.The second module 74 is formed by the magazine 75 for semi-vertical storage (70 °) of the blanks to be formed.

Celui-ci comprend deux chaines modulaires 76 entrainées par un système pneumatique 77.This comprises two modular chains 76 driven by a pneumatic system 77.

Les chaines 76 sont par exemple couplées à une roue libre 78 et permettent de maintenir un flan prêt à être alimenté en partie frontale 79.The chains 76 are for example coupled to a free wheel 78 and allow to maintain a blank ready to be fed at the front end 79.

Dans le magasin 75 les flans sont stockés avec la face non imprimée vers l'extérieur et la languette de collage interne à gauche dans le sens de la marche.In the magazine 75 the blanks are stored with the unprinted side outwards and the inner gluing tab on the left in the direction of travel.

Le troisième module 80 d'extraction (cf. également figure 10A) comprend une fourche 81 sensiblement en forme de U recourbé à l'extrémité de ses branches, munie d'une barre horizontale inférieure 82 porteuse des ventouses 83 par exemple quatre ventouses, alimenté en vide de façon connue, et d'une barre horizontale supérieure 84 en forme de poutre ajourée.The third extraction module 80 (see also figure 10A ) comprises a fork substantially 81 U-shaped curved at the end of its branches, provided with a lower horizontal bar 82 carrying suction cups 83, for example four suction cups, fed vacuum in a known manner, and an upper horizontal bar 84 in the form of a perforated beam.

La fourche 81 est mobile en déplacement longitudinal sur une poutre longitudinale 85 (38 sur les figures 3 à 7) entre une position de préhension 86 et une position de lâchage 87.The fork 81 is movable in longitudinal displacement on a longitudinal beam 85 (38 on the Figures 3 to 7 ) between a gripping position 86 and a releasing position 87.

Pour ce faire la poutre 85 comprend en partie supérieure une came 88, avec pente progressive montante vers la sortie de la caisse, d'actionnement via un bras articulé 89, de la barre horizontale inférieure 82 qui mécaniquement fait pivoter les ventouses autour d'un axe 90 pour amener le flan à l'horizontal (cf. figures 4 à 6).To do this the beam 85 comprises in the upper part a cam 88, with progressive slope rising towards the exit of the box, actuation via an articulated arm 89, the lower horizontal bar 82 which mechanically rotates the suction cups around a axis 90 to bring the blank to the horizontal (cf. Figures 4 to 6 ).

La machine selon le mode de réalisation de l'invention plus particulièrement décrit ici, comprend ensuite un système 91 de transfert-éjection-porte mandrin (figure 10B) constituant la partie de dépose.The machine according to the embodiment of the invention more particularly described here, then comprises a system 91 of transfer-ejection-gate mandrel ( figure 10B ) constituting the removal part.

Le système 91 comprend le support 92 en V inversé, propre à être situé en dessous de l'arête centrale du flan.The system 91 comprises the support 92 inverted V, suitable to be located below the central edge of the blank.

Le support en V pour une boîte rectangulaire comprend une arête supérieure 93 formant un angle à 90°(ou en forme de poutre de petite largeur égale à celle du coin coupé pour une caisse à huit côtés) et deux lames 94 métalliques supérieures, parallèles, symétriques par rapport à un plan central vertical, lesdites lames étant situées dans des plans formant un angle de 45° avec le plan vertical, pour former les amorces de faces latérales du flan (orientées à 45°) .The V-shaped support for a rectangular box comprises an upper edge 93 forming a 90 ° angle (or beam-shaped of small width equal to that of the cut corner for an eight-sided box) and two parallel upper metal blades 94, symmetrical with respect to a vertical central plane, said blades being located in planes forming an angle of 45 ° with the vertical plane, to form the lateral side primers of the blank (oriented at 45 °).

Deux plaques parallèles longitudinales 95, dans le prolongement vont servir de contre appui de guidage aux volets adjacents au poste de dépose.Two longitudinal parallel plates 95, in the extension will serve as a guide support flaps adjacent to the dispensing station.

Un dispositif de réglage en hauteur de ces plaques en biais par exemple avec chaînes en noria 97 est prévu.A device for adjusting the height of these slanted plates, for example with chains in noria 97, is provided.

Le système 91 comprend une extrémité 98 porte mandrin et un support mécanique 99 comprenant deux montants 100, 101 de support latéraux, en forme de plaques triangulaires, rigidifiées entre elles par deux longerons 102 longitudinaux, à savoir une plaque d'extrémité 100 et une plaque intermédiaire 101 laissant dépasser à son extrémité l'arête du support en V pour formation d'une partie du mandrin 103.The system 91 comprises a mandrel end 98 and a mechanical support 99 comprising two side support posts 100, 101, in the form of triangular plates, stiffened together by two longitudinal longitudinal members 102, namely an end plate 100 and a plate intermediate 101 leaving at its end protrude the edge of the V-shaped support for forming a portion of the mandrel 103.

Un mandrin quadrangulaire 103 ou octogonal est disposé à l'extrémité 98 du support en V inversé qui va maintenant être plus particulièrement décrit en référence aux figures 10C et 10D.A quadrangular mandrel 103 or octagonal is disposed at the end 98 of the inverted V support which will now be more particularly described with reference to the Figures 10C and 10D .

Le mandrin 103 comprend une arête fixe 104 en V, en partie haute située dans le prolongement de l'arête supérieure 93 du système 91 et deux arêtes réglables 105, 106 en forme de cornière (ici à 90°) situées de part et d'autre de l'arête centrale aux distances correspondantes pour coïncider avec les premières ligne de pliage 9, 10 ou de jonction 24.The mandrel 103 comprises a fixed edge 104 V, at the top located in the extension of the upper edge 93 of the system 91 and two adjustable edges 105, 106 shaped angle (here at 90 °) located on both sides other of the central edge at the corresponding distances to coincide with the first fold line 9, 10 or junction 24.

Le mandrin comprend également une quatrième arête 107 mobile, solidaire d'une plaque 108 d'éjection de la caisse et fixée à l'angle 109 de ladite plaque, celle-ci étant de dimension égale (un peu inférieure) au fond de la caisse.The mandrel also comprises a fourth movable edge 107 secured to a plate 108 for ejecting the box and fixed to the angle 109 of said plate, the plate being of equal size (a little smaller) at the bottom of the box. .

La plaque 108 est montée de façon amovible et configurée pour s'adapter aux tailles des caisses, en étant fixée avec un pion de centrage sur l'extrémité 110 d'un rail mobile 111 porte éjecteur.Plate 108 is removably mounted and configured to accommodate crate sizes, being fixed with a centering pin on the end 110 of a movable rail 111 ejector door.

Le mandrin est ainsi composé d'une arête de référence 104 sur laquelle le flan vient plier à 90° au poste d'extraction, de deux arêtes réglables 105, 106 à angle droit ou en coin coupé selon le type de caisse, qui s'adaptent de part et d'autre de la référence en fonction de la taille de la caisse formée, et d'une arête 107 solidaire de la plaque d'éjection 108 qui fait partie de l'outillage en fonction de la section de la caisse.The mandrel is thus composed of a reference edge 104 on which the blank comes to bend at 90 ° to the extraction station, two adjustable edges 105, 106 at right angles or wedges cut according to the type of box, which is adapt on both sides of the reference depending on the size of the box formed, and an edge 107 integral with the ejection plate 108 which is part of the tool according to the section of the box.

Le système 91 comprend quant à lui un système 112 d'éjection de la caisse formée par une règle coulissante actionnée par une chaine ou courroie 114 (chaine 49 sur les figures 3 à 6) de façon connue, en mouvement de va et vient.The system 91 comprises a system 112 for ejecting the body formed by a sliding rule actuated by a chain or belt 114 (chain 49 on the Figures 3 to 6 ) in known manner, moving back and forth.

Entre le poste de dépose et le mandrin, il est prévu des moyens 115 d'encollage comprenant un réservoir 116 de colle « hot melt » et trois pistolets injecteurs 117 (représentés schématiquement en trait mixte sur la figure 10C) pour déposer des traits de colle sur les rabats de fond et sur la languette de collage.Between the dispensing station and the mandrel, there are provided means 115 for gluing comprising a reservoir 116 of hot melt glue and three injecting guns 117 (shown schematically in dashed line on the Figure 10C ) to deposit lines of glue on the bottom flaps and on the gluing tab.

Les figures 10E et 10F montrent les modules 118 et 119 respectivement de mise en volume du flan autour du mandrin et de plaquage du fond.The Figures 10E and 10F show the modules 118 and 119 respectively volume setting of the blank around the mandrel and bottom plating.

Le module 118 comprend deux bras articulés 120 et 121 comportant une pièce verticale support 122, mobile verticalement de façon connue en elle-même, à laquelle sont rattachés les deux bras pivotants.The module 118 comprises two articulated arms 120 and 121 comprising a vertical support part 122, vertically movable in a manner known per se, to which the two pivoting arms are attached.

Chaque bras comprend une tige 123, 124 munie d'une articulation intermédiaire 125, 126 permettant le pliage des panneaux d'extrémité ou intermédiaire (caisse à huit côtés) et une membrure distale 127, 128. Elles sont munies à leurs portions d'extrémités respectives de patins d'application 129, 130 permettant le pliage du volet du dessus (129) et du volet portant la languette de collage et ladite languette de collage (130).Each arm comprises a rod 123, 124 provided with an intermediate hinge 125, 126 allowing the folding of the end panels or intermediate (box with eight sides) and a distal chord 127, 128. They are provided at their respective end portions of application pads 129, 130 for folding the top flap (129) and the flap bearing the sticking tongue and said bonding tab (130).

Le module 119 comprend quant à lui (cf. figure 10F) une structure 131 en forme de V inversé avec deux bras 132 et 133 latéraux et une pièce mobile 134 en forme de plaque 135 mobile, par exemple par vérin 136 pour mise en pression simultanée de la patte de collage et du fond.The module 119 comprises (cf. figure 10F ) an inverted V-shaped structure 131 with two lateral arms 132 and 133 and a movable piece 134 in the form of a plate 135 movable, for example by jack 136 for simultaneous pressing of the glue tab and the bottom.

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

A partir du magasin 30 de stockage de flans on extrait un premier flan 1 que l'on fait basculer à l'horizontal. On le lâche alors sur l'arête supérieure du support.From the blank storage magazine 30 is extracted a first blank 1 which is tilted horizontally. It is then dropped on the upper edge of the support.

Sa position centrée et la gravité, aidé éventuellement par un rabattage latéral avec les bras pivotants 46 dans le plan vertical, lui donne une première forme en V.Its centered position and gravity, possibly aided by lateral folding with the pivoting arms 46 in the vertical plane, gives it a first V shape.

On le fait alors avancer jusqu'au poste de formation en le poussant à l'aide de taquets coinceurs 51 jusqu'au mandrin, qui est à ce moment-là en position ramassée.It is then advanced to the training station by pushing it with cleats 51 to the mandrel, which is at that time in the picked position.

On encolle lors du transfert avec les pistolets l'intérieur des rabats et de la languette.Gluing is carried out with the guns inside the flaps and the tongue.

On forme ensuite les parois et l'on referme la ceinture par plaquage sur les côtés avec le module 118.The walls are then formed and the belt is closed by plating on the sides with the module 118.

Puis on plaque pour finir la languette et les rabats extérieurs encollés pour former le fond avec le module 119.Then plate to finish the tab and outer flaps glued to form the bottom with the module 119.

Le système d'éjection est alors enclenché et la caisse en biais, poussée d'un côté sur la face intérieure du fond et aspirée de l'autre côté par la face extérieure, vient au poste 61 de basculement et d'évacuation de la caisse ouverte, qui est alors redressée verticalement.The ejection system is then engaged and the box slanted, pushed on one side on the inner face of the bottom and sucked on the other side by the outer face, comes to the station 61 tilting and evacuation of the body open, which is then straightened vertically.

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 basculement des flans est effectué différemment.As is obvious and as also follows from the above, the present invention is not limited to the embodiments more particularly described. On the contrary, it embraces all the variants and in particular those where the tilting of the blanks is performed differently.

Claims (16)

  1. Method for the formation of a box (C) from a blank (1) comprising a succession of four main rectangular panels (3, 4, 5, 6) ending in a gluing tongue (7), connected to each other by first fold lines parallel to each other or by intermediate panels, namely a first central fold line (8) or a first central intermediate panel (20), two first lateral fold lines (9, 10) or two lateral intermediate panels (21, 22) and a first tongue fold line (11) or an end lateral panel (23), and including a set (12) of lateral flaps (13) connected to one side of said succession of panels by second fold lines (14) perpendicular to the first fold lines, in order to form the bottom of the box,
    characterised in that
    - the blank (1) is extracted by suction from a storage magazine (30),
    - the blank is transported horizontally over a support (43) having an upper edge (45) of V-shaped or substantially V-shaped cross-section and faces which correspond to the main panels and which are inclined relative to the horizontal by a given angle α, so that the so-called reference first central fold line (8) or central intermediate panel (20) is opposite said edge (45),
    - the blank (1) is deposited on the support (43) so that the reference fold line (8) or intermediate panel (20) coincides or substantially coincides with said edge (45),
    - next the blank is applied to a polygonal mandrel (47, 103) of which the upper edge coincides and/or is an extension of the upper edge of the support, said mandrel having a shape complementary to that of the box, applying the panels adjacent to said reference first fold line or intermediate panel to the upper faces opposite the mandrel and applying the previously glued end panels and tongue (7) to the lower faces opposite said mandrel, in order to form a tubular box body which is angled relative to the horizontal,
    - the bottom of the box (C) is formed by folding and applying the flaps to each other after gluing,
    - the box (C) which is thus formed at an angle is ejected,
    - it is set straight, then transferred to a filling station.
  2. Method according to claim 1, characterised in that the blank (1) is deposited on a support (43) having or delimiting faces which correspond to the main panels and which are inclined by an angle of between 30° and 60° relative to the horizontal.
  3. Method according to claim 2, characterised in that the angle α is 45°.
  4. Method according to any one of the preceding claims, characterised in that the first reference fold line (8) or intermediate panel (20) of the support is deposited by releasing the blank which falls onto the upper edge (45) by gravity.
  5. Method according to claim 1, characterised in that the reference first fold line (8) or intermediate panel (20) is deposited on the upper edge (45) of the support (47), by guiding the blank by friction over the top of the edge.
  6. Method according to any one of the preceding claims, characterised in that the blank (1) is deposited at a first station for deposition on the support, the blank is transferred by gluing it and the tubular body of the box and the bottom are formed at a second shaping station on the mandrel, before it is ejected.
  7. Method according to claim 6, characterised in that, in order to eject the box, a thrust is applied to the shaped bottom, and in order to set it straight it is caused to fall onto an inclined plate (63), it is lifted while tilted with a fork lift (64) and it is tilted by pushing it laterally onto a horizontal upper end plate (65) in order to make it horizontal, before again tilting it to the vertical onto a transfer mat (62).
  8. Method according to any one of claims 6 and 7, characterised in that the panels adjacent to said first central fold line (8) are applied to the upper faces opposite the mandrel, and the previously glued end panels and tongue are applied to the lower faces opposite said mandrel, by two hinged arms (120, 121).
  9. Machine for the formation of a box (C) from a blank (1) comprising a succession of four main rectangular panels (3, 4, 5, 6) ending in a gluing tongue (7), connected to each other by first fold lines parallel to each other or by rectangular intermediate flaps, namely a first central fold line (8) or a first central intermediate panel (20), two first lateral fold lines (9, 10) or two lateral intermediate flaps (21, 22) and a first tongue fold line (11) or an end lateral panel, and including a set (12) of lateral flaps (13) connected to one side of said succession of panels by second fold lines (14) perpendicular to the first fold lines, in order to form the bottom of the box, characterised in that it includes
    - means (33) for extracting the blank by suction from a storage magazine (30) and transporting the blank (1) horizontally over a support (43, 92),
    - said support (43) having a V-shaped or substantially V-shaped upper edge (45) and adjacent faces which correspond to the main panels and which are inclined relative to the horizontal, said means for extracting the blank and transporting it being arranged so that the so-called reference first central fold line (8) or central intermediate panel (20) is opposite said edge (45, 104),
    - means (73) for controlling deposition of the blank on the support, so that the reference fold line (8) or intermediate panel (20) coincides or substantially coincides with said edge,
    - means for shaping the box coinciding with, or forming an extension of, the support including a polygonal mandrel (47, 103) having a shape complementary to that of the box,
    - means (115, 116) for gluing the flaps and the gluing tongue,
    - means (120, 121) for applying the panels adjacent to said reference first fold line or intermediate panel to the upper faces opposite the mandrel, and for applying the previously glued end panels and tongue to the lower faces opposite said mandrel, in order to form a tubular box body angled relative to the horizontal,
    - means (134) for placing the flaps flat in order to form the bottom of the box by folding and application of the flaps to each other after gluing,
    - means (112) for ejecting the box which is thus formed at an angle,
    - means for setting the box straight and transferring said box to a filling station.
  10. Machine according to claim 9, characterised in that the mandrel is composed of a frame comprising three parallel edges (104, 105) fixed in relation to each other, and a movable edge (107) mounted on an ejector piston belonging to the ejection means.
  11. Machine according to claim 10, characterised in that the edges are composed of an upper central edge (104) of inverted V section, the angles of the V being 45° relative to the horizontal, two lateral edges (105) which are adjustable relative to the upper central edge, and a lower edge (107) integral with a movable and removable jig (108).
  12. Machine according to any one of claims 9 to 11, characterised in that the edges have cut corners.
  13. Machine according to any one of claims 9 to 12, characterised in that it includes a first station (D) for deposition on the support (43), where the blank is released by the extraction means (30) onto a first part of the support, means (48) for transferring the blank (1) in order to transport the blank to a second shaping station (F) on a second part of the support comprising said mandrel, where the tubular body of the box and the bottom are shaped, gluing means allowing adhesive lines to be deposited while the blank is transported from the depositing station to the shaping station, and means for ejecting the box from the mandrel.
  14. Machine according to any one of claims 9 to 13, characterised in that the means (112) for ejecting the box include thrust means on the inside of the bottom.
  15. Machine according to any one of claims 9 to 14, characterised in that the means for setting the box straight comprise an angled plate (63) for receiving the ejected box, which is at an angle to the horizontal, a fork lift (64) for lifting the angled plate from a first lower receiving position to a second upper position for making it horizontal, a first lateral thrust means arranged to push the box, when the angled plate is in the upper position, onto a horizontal upper end plate (65), in order to make said box horizontal, and a second lateral thrust means perpendicular to the first one to make said box vertical on a support arranged to transport it towards a packaging station.
  16. Machine according to any one of claims 9 to 15, characterised in that it comprises two hinged arms (120, 121) arranged to apply the panels adjacent to said first central fold line or the central intermediate panel to the upper faces opposite the mandrel, and to apply the previously glued end panels and tongue to the lower faces opposite said mandrel.
EP15804906.4A 2014-11-20 2015-11-19 Method and machine for forming a box by placement on a v-shaped support Not-in-force EP3224147B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1461223A FR3028798B1 (en) 2014-11-20 2014-11-20 METHOD AND MACHINE FOR THE FORMATION OF A BODY BY REMOVING A SUPPORT V.
PCT/FR2015/053143 WO2016079443A1 (en) 2014-11-20 2015-11-19 Method and machine for forming a box by placement on a v-shaped support

Publications (2)

Publication Number Publication Date
EP3224147A1 EP3224147A1 (en) 2017-10-04
EP3224147B1 true EP3224147B1 (en) 2019-01-02

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ID=52450405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15804906.4A Not-in-force EP3224147B1 (en) 2014-11-20 2015-11-19 Method and machine for forming a box by placement on a v-shaped support

Country Status (12)

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US (1) US20170320608A1 (en)
EP (1) EP3224147B1 (en)
JP (1) JP6694883B2 (en)
KR (1) KR20170086037A (en)
AU (1) AU2015348131A1 (en)
ES (1) ES2718201T3 (en)
FR (1) FR3028798B1 (en)
PH (1) PH12017500938A1 (en)
PT (1) PT3224147T (en)
TN (1) TN2017000147A1 (en)
WO (1) WO2016079443A1 (en)
ZA (1) ZA201702730B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10987889B2 (en) 2015-09-21 2021-04-27 Westrock Shared Services, Llc Methods and machine for forming a shipping container with an article retaining web
US10350849B2 (en) 2015-09-21 2019-07-16 Westrock Shared Services, Llc Methods and machine for forming a two-piece blank assembly
US10899101B2 (en) 2018-04-10 2021-01-26 Westrock Shared Services, Llc Machine and methods for attaching retaining web to container blank
US11400679B2 (en) 2018-04-10 2022-08-02 Westrock Shared Services, Llc Machine and methods for attaching a tray blank to a cover blank
CN109910361A (en) * 2019-04-03 2019-06-21 东莞大瑞智能装备有限公司 A kind of novel folding cartridge device

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Publication number Priority date Publication date Assignee Title
GB180801A (en) * 1921-03-19 1922-06-08 Bryant & May Ltd Improvements in machines for making match box casings
US4352422A (en) * 1977-10-25 1982-10-05 American Can Company Box transfer apparatus
JPS58122847A (en) * 1982-01-18 1983-07-21 積水化成品工業株式会社 Method of feeding circumferential side material for manufacturing small wooden box
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
JP2813820B2 (en) * 1989-09-13 1998-10-22 四国化工機株式会社 Container molding equipment
FR2665137B1 (en) * 1990-07-24 1994-07-01 Otor Sa CRATES IN A SHEET MATERIAL, BLANKS AND MACHINE FOR THE PRODUCTION OF SUCH CRATES.
JP3247355B2 (en) * 1999-08-25 2002-01-15 レンゴー株式会社 Box making equipment

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Title
None *

Also Published As

Publication number Publication date
AU2015348131A1 (en) 2017-06-15
FR3028798A1 (en) 2016-05-27
FR3028798B1 (en) 2017-01-06
WO2016079443A1 (en) 2016-05-26
EP3224147A1 (en) 2017-10-04
JP6694883B2 (en) 2020-05-20
KR20170086037A (en) 2017-07-25
PH12017500938A1 (en) 2017-11-27
TN2017000147A1 (en) 2018-10-19
JP2017538601A (en) 2017-12-28
PT3224147T (en) 2019-04-22
US20170320608A1 (en) 2017-11-09
ZA201702730B (en) 2018-05-30
ES2718201T3 (en) 2019-06-28

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