EP0764518B1 - Modular folder unit for sheet folder-gluer apparatus - Google Patents

Modular folder unit for sheet folder-gluer apparatus Download PDF

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Publication number
EP0764518B1
EP0764518B1 EP96114939A EP96114939A EP0764518B1 EP 0764518 B1 EP0764518 B1 EP 0764518B1 EP 96114939 A EP96114939 A EP 96114939A EP 96114939 A EP96114939 A EP 96114939A EP 0764518 B1 EP0764518 B1 EP 0764518B1
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EP
European Patent Office
Prior art keywords
module
belt
main support
fact
folding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP96114939A
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German (de)
French (fr)
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EP0764518A1 (en
Inventor
Roberto Valterio
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Bobst Mex SA
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Bobst SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/005—Making rigid or semi-rigid containers, e.g. boxes or cartons involving a particular layout of the machinery or relative arrangement of its subunits
    • 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
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/30—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • 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
    • B31B50/58—Folding sheets, blanks or webs by moving endless belts or chains
    • 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
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/62—Uniting opposed surfaces or edges; Taping by adhesives
    • B31B50/624—Applying glue on blanks

Definitions

  • the present invention relates to a modular device for removable folding in a folder-gluing machine of plate elements, especially of cardboard box cutouts.
  • a folder gluer is a machine in which we take the cutouts of boxes, one by one from the top of a pile, and that we then conveys through different folding sections and / or bonding using belt conveyors, to receive them "folded flat” and glued in a terminal stacking station.
  • the chronology operations is usually: pre-crushing of the side tab, folding simple right and left front dropouts composed with reopening of the side tab, folding of the center-right front tab, gluing by the top of the compound front legs, gluing by the underside of the side tab and folding of the front-left single tab, folding along the second and fourth longitudinal folds with the edge right of the cut coming to close in the middle over the tab lateral glued, pressing and ejection at the outlet of which each folded cut is stacked in a final receiving station.
  • the chronology usual operations is: folding of the simple front legs, then compound front legs, raising and folding the rear legs composed, then simple back legs, gluing over the front and rear compound legs at four points on one side and two points on the other, folding and folding according to the first longitudinal fold of the side tab over the adjacent glue dots of the front legs and back double glued, folding along the second and fourth folds with the other side tab coming to apply over the pair of adjacent dots of glue, the two glue dots in the center folding down over the adjacent edges of the other compound legs.
  • the front legs are folded up using a device relatively simple with one or more hanging hooks elastic to a cross member, the lower end of these hooks finding in the axis of passage of the legs of the cutout.
  • the device automatic rear leg lift is a little more complex because it includes one or more underlying hooks rotated towards the top only at the time of the passage of the hind leg, and this with a speed of movement higher than that of cutting.
  • Folding along a longitudinal line is initiated by a twisted band in polished metal, and is followed by a twisted ramp formed one or more parallel bars of synthetic material having a low coefficient of friction with cardboard.
  • the ramp consists of a pair of drive belts associated, a twisted upper and a flat lower.
  • the belts are usually driven by separate pulleys for better control their trajectory, these pulleys usually being mounted on a same drive shaft.
  • the object of the present invention is a folding device for side cutout tab inducing no cross position of the cut based on a pair of drive belts: a comprising a folded twisted upper part and one comprising, in correspondence, a flat lower part, which, although more complex that a simple twisted metal ramp, can be installed very easily in place of a sizing device comprising a sizing wheel rotated by a shaft.
  • a sizing device comprising a sizing wheel rotated by a shaft.
  • the operation of this device must remain reliable, and its design must be as simple as possible to reduce the production costs accordingly.
  • a folding device due to the fact it is in the form of a removable module incorporating means for attachment to the machine frame, two sets of pulleys defining with one or two drums respectively the path of the belt with twisted part and belt with part in plane correspondence, and connecting members of the drum (s) to the drive shaft of the gluing wheel.
  • the module comprises a vertical main plane support, such as a metal plate, the face of which external comprises the means for hooking to the frame of the machine, and of which the internal face includes the two sets of pulleys and the drum (s) of the two belts.
  • this internal face includes, in addition, a metal ramp for guiding and supporting the part of twisted folding strap.
  • the internal face of the main module support only carries a single large drum side-by-side drive of the two belts, this main support having a passage of the drive shaft of the gluing wheel for direct connection with the drum hub.
  • this hub has a conical surface contacting the conical surface complementary to the end of the tree.
  • the main support has a upstream extension of the path of the twisted part of the belt. This optimizes the dimensions of the main support.
  • the module comprises in addition a vertical plane secondary support parallel to the main support and arranged opposite the path of the flat part belt which it carries the guide pulleys.
  • This secondary support forms the internal facade of the module thus protecting the drum and partially the pulleys and belts.
  • This secondary support is particularly useful for carrying a elastic device for a tensioning pulley, this device comprising a movable part along a rectilinear light practiced in the support, and at a level where the machine frame prevents it from spare in the main support.
  • the main support comprises at its edge upper gripping and / or lifting means such as a pair of handles.
  • the means of attachment to the frame belonging to the external face of the main support of the module can be in the form of a horizontal plate applied on the upper face of a part of the frame, this plate having one or more notches or lights traversed by means for fixing the plate against the workpiece, the length of the notches and lights allowing adjustment of the position of the module before tightening the fixing means.
  • the room of the frame is itself mounted on a cross member to adjust its position lateral.
  • a folding module 100 is installed in place of a gluing device on a piece of frame 10 in the form of a frame.
  • Two pipes 12 and 12 'from the upstream part of this frame part 10 are engaged by two crosspieces cylindrical of the machine: a support and a thread for adjusting the lateral position.
  • the downstream end of this frame 10 also has a semicircular notch coming to engage in another cross cylindrical in correspondence.
  • the folding module 100 is built around a main support plate 20 vertical plane whose external face 23 is provided with a horizontal hooking plate 24 coming to bear on the upper face of the frame part 10.
  • This plate 24 includes one or more notches or openings oblong 25 for the passage of fixing screws. These elongated openings thus allow an adjustment of the position of the module 100 relative to the frame part 10 before tightening.
  • the internal face 22 of the plate main support 20 carries substantially in the middle of its lower part a drive drum 30 mounted free to rotate on a bearing.
  • the conical central hub of this drum can be directly connected to the also conical end 32 of the drive shaft 34 ( Figure 2) normally designed to drive a gluing wheel.
  • This tree of transmission 34 comes from the external face, crosses the piece of frame 10 then a passage formed in correspondence in the main plate 20 for reach the hub of the drum 30.
  • the main plate 20 includes an upstream extension 21 making it possible to install, against the internal face 22, a long twisted metallic ramp 51 for folding and turning side cutout tab.
  • this metal ramp 51 is covered by part (a) of an upper belt 40 running in the same direction as the cutouts. At the end of this ramp, this belt 40 makes an upward turn (b) around a pulley 41 then performs an inverted spin (c) to an upper pulley 42 before to descend downwards (d) towards a third pulley 43 orienting this belt 40 around the drive drum 30 at an angle very important embarrassment.
  • the belt starts again horizontally (g) towards a pulley 46 where it makes a round trip (f) around a tensioning pulley 45 to always start again at the horizontal (g ') towards a pulley 47 located at the end of the extension upstream 21 returning it (h) to the start of its twisted trajectory (a).
  • the axis of the pulley 45 passes through a longitudinal opening 44 at the rear of which the other end 45 'of this axis ( Figure 2) is pulled downstream by elastic means not shown.
  • a secondary vertical plate 28, better visible in the figure 1, is fixed parallel vis-à-vis the main plate 20 by spacers not shown.
  • the external face of this secondary plate 28, i.e. the face facing the main plate 20, carries a plurality of pulleys, also not shown, guiding a belt lower 50 having a flat part (a ') facing the downstream third of the twisted part (a) of the upper belt 40.
  • this lower belt 50 is returned downwards (b ') to wind up (e ') around the drive drum 30 directly next to the belt lower 50.
  • this lower belt passes (f ') around a pulley whose outer part of the axis can be observed 58 sliding inside a longitudinal groove 57 against the force of elastic tensioning means not shown. Then this belt is returned by a half-turn upwards (h ') towards its flat trajectory (a').
  • this folding module 100 is relatively easy in the measure just put it in place by lowering it slowly to using the handles 26 to place it on the upper face of the workpiece frame 10. After adjusting the position, tighten the clamping screws passing through the notches 25, then the end is coupled conical 32 of the drive shaft 34 to the hub also conical of the drum 30. Once the machine is started, this drum drives simultaneously the two belts 40 and 50 which therefore pass virtually at the same speed.

Abstract

The folder has two drive belts (40, 50), one with an upper twisted section (a) for folding, and the other with a lower flat section (a'). It is installed adjacent to an adhesive applicator with a wheel rotated by a shaft, and is in the form of a detachable module (100) with connectors for attaching to the folding machine frame. It has one or two driving drums (30) which control the trajectory of the belts and have couplings (32) for attaching them to the adhesive applicator wheel drive shaft. The module comprises a main vertical support with connectors on its outer face for attaching to the machine frame, and with the pulleys or drive drums on its inner face. The support also has an extension (21) for the twisted section of the belt (40) and a gripper and/or lifter (26) on its upper edge.

Description

La présente invention est relative à un dispositif modulaire de pliage amovible dans une machine plieuse-colleuse d'éléments en plaque, notamment de découpes de boítes en carton.The present invention relates to a modular device for removable folding in a folder-gluing machine of plate elements, especially of cardboard box cutouts.

Une plieuse colleuse est une machine dans laquelle on prend les découpes de boítes, une à une du dessus d'une pile, et que l'on transporte ensuite au travers de différentes sections de pliage et/ou de collage à l'aide de convoyeurs à courroies, pour les recevoir "pliées à plat" et collées dans une station terminale d'empilage.A folder gluer is a machine in which we take the cutouts of boxes, one by one from the top of a pile, and that we then conveys through different folding sections and / or bonding using belt conveyors, to receive them "folded flat" and glued in a terminal stacking station.

Pour un type de boíte dit "à fond automatique", la chronologie des opérations est usuellement : un précassage de la patte latérale, pliage des pattes avant droite simple et gauche composées avec réouverture de la patte latérale, pliage de la patte avant centre-droite composée, encollage par le dessus des pattes avant composées, encollage par le dessous de la patte latérale et pliage de la patte simple avant-gauche, pliage le long du deuxième et quatrième plis longitudinaux avec le bord droit de la découpe venant se refermer au milieu par-dessus la patte latérale encollée, pressage et éjection à la sortie de laquelle chaque découpe pliée est empilée dans une dernière station de réception.For a type of box called "automatic bottom", the chronology operations is usually: pre-crushing of the side tab, folding simple right and left front dropouts composed with reopening of the side tab, folding of the center-right front tab, gluing by the top of the compound front legs, gluing by the underside of the side tab and folding of the front-left single tab, folding along the second and fourth longitudinal folds with the edge right of the cut coming to close in the middle over the tab lateral glued, pressing and ejection at the outlet of which each folded cut is stacked in a final receiving station.

Pour un autre type de boíte dit "à six points", la chronologie usuelle des opérations est : pliage des pattes avant simples, puis des pattes avant composées, relèvement et pliage des pattes arrière composées, puis des pattes arrière simples, encollage par le dessus des pattes composées avant et arrière en quatre points d'un côté et deux points de l'autre, pliage et rabattement selon le premier pli longitudinal de la patte latérale par-dessus les points de colle adjacents des pattes avant et arrière doublement encollées, pliage le long du deuxième et quatrième plis avec l'autre patte latérale venant s'appliquer par-dessus la paire de points de colle adjacents, les deux points de colle du centre se rabattant par-dessus les bords adjacents des autres pattes composées. For another type of box called "six points", the chronology usual operations is: folding of the simple front legs, then compound front legs, raising and folding the rear legs composed, then simple back legs, gluing over the front and rear compound legs at four points on one side and two points on the other, folding and folding according to the first longitudinal fold of the side tab over the adjacent glue dots of the front legs and back double glued, folding along the second and fourth folds with the other side tab coming to apply over the pair of adjacent dots of glue, the two glue dots in the center folding down over the adjacent edges of the other compound legs.

Afin de transporter les découpes de boítes sans glissement, tant latéral que longitudinal, au travers de la machine, on utilise en combinaison des transporteurs à courroies inférieurs et supérieurs ainsi que, dans certains cas, la combinaison d'un ou plusieurs transporteurs inférieurs à courroies avec des rampes supérieures de galets presseurs.In order to transport the box cutouts without slipping, both lateral and longitudinal, through the machine, combination of lower and upper belt conveyors as well that in some cases the combination of one or more carriers lower belts with upper ramps of pinch rollers.

Le repliage des pattes avant s'effectue grâce à un dispositif relativement simple comportant un ou plusieurs crochets suspendus de manière élastique à une traverse, l'extrémité inférieure de ces crochets se retrouvant dans l'axe de passage des pattes de la découpe. Le dispositif de relèvement automatique des pattes arrière est un peu plus complexe car il comprend un ou plusieurs crochets sous-jacents mis en rotation vers le haut seulement au moment du passage de la patte arrière, et ce avec une vitesse de déplacement supérieure à celle de la découpe.The front legs are folded up using a device relatively simple with one or more hanging hooks elastic to a cross member, the lower end of these hooks finding in the axis of passage of the legs of the cutout. The device automatic rear leg lift is a little more complex because it includes one or more underlying hooks rotated towards the top only at the time of the passage of the hind leg, and this with a speed of movement higher than that of cutting.

Un pliage selon une ligne longitudinale est amorcé par une bande vrillée en métal poli, et est poursuivi par une rampe vrillée formée d'une ou plusieurs barres parallèles en matériau synthétique présentant un faible coefficient de friction avec le carton. Lorsque la partie à plier est lourde, la rampe est constituée d'une paire de courroies d'entraínement associées, une supérieure vrillée et une inférieure plane. Les courroies sont usuellement entraínées par des poulies distinctes pour mieux contrôler leur trajectoire, ces poulies étant usuellement montées sur un même arbre d'entraínement.Folding along a longitudinal line is initiated by a twisted band in polished metal, and is followed by a twisted ramp formed one or more parallel bars of synthetic material having a low coefficient of friction with cardboard. When the part to be folded is heavy, the ramp consists of a pair of drive belts associated, a twisted upper and a flat lower. The belts are usually driven by separate pulleys for better control their trajectory, these pulleys usually being mounted on a same drive shaft.

Les transporteurs, crochets, rampes et courroies vrillés sont montés à demeure dans la machine sur différentes traverses, ce qui permet de régler leurs positions latérales respectives selon le format de la découpe lors d'un changement de série. Notamment, lorsque l'on passe d'une production de boítes "à fond automatique" à une production de boítes "à six points", on doit substituer le dernier dispositif d'encollage sous-jacent de patte latérale par une rampe métallique vrillée de retournement de la nouvelle patte latérale contre la paire de points de colle adjacente. Pour ce, on démonte la roue d'encollage de son arbre d'entraínement et on retire le bac de colle inférieur. Conveyors, hooks, ramps and twisted belts are permanently mounted in the machine on different sleepers, which allows to adjust their respective lateral positions according to the format of the cutting when changing series. In particular, when we pass from a production of "automatic bottom" boxes to a production of "six point" boxes, we must replace the last gluing device underlying side tab by a twisted metal ramp of turning the new side tab against the pair of glue dots adjacent. For this, we remove the glue wheel from its shaft drive and remove the lower glue tank.

Par ailleurs, lors de la production de boítes "à six points", on constate que le rabattement de la patte latérale juste avant le pliage final induit très fréquemment un léger travers de la position de la découpe par rapport à son transporteur. Ce travers dû à la friction entre le carton et la rampe vrillée métallique fausse alors sensiblement le dernier pliage.In addition, during the production of "six point" boxes, we finds that the fold-down of the side tab just before the final folding very frequently induces a slight skew in the cutting position by report to its carrier. This shortcoming due to the friction between the cardboard and the twisted metal ramp then substantially falsifies the last folding.

Le but de la présente invention est un dispositif de pliage de patte latérale de découpe n'induisant aucun travers de position de la découpe en étant basé sur une paire de courroies d'entraínement : une comprenant une partie supérieure vrillée de pliage et une comprenant, en correspondance, une partie inférieure plane, qui, bien que plus complexe qu'une simple rampe métallique vrillée, puisse être installé très facilement à la place d'un dispositif d'encollage comprenant une roue encolleuse entraínée en rotation par un arbre. Toutefois, le fonctionnement de ce dispositif doit rester fiable, et sa conception doit être aussi simple que possible pour en réduire d'autant les coûts de réalisation.The object of the present invention is a folding device for side cutout tab inducing no cross position of the cut based on a pair of drive belts: a comprising a folded twisted upper part and one comprising, in correspondence, a flat lower part, which, although more complex that a simple twisted metal ramp, can be installed very easily in place of a sizing device comprising a sizing wheel rotated by a shaft. However, the operation of this device must remain reliable, and its design must be as simple as possible to reduce the production costs accordingly.

Ces buts sont atteints grâce à un dispositif de pliage du fait qu'il se présente sous la forme d'un module amovible intégrant des moyens d'accrochage au bâti de la machine, deux séries de poulies définissant avec un ou deux tambours d'entraínement respectivement le trajet de la courroie à partie vrillée et de la courroie à partie en correspondance plane, et des organes de liaison du ou des tambours à l'arbre d'entraínement de la roue encolleuse.These goals are achieved by a folding device due to the fact it is in the form of a removable module incorporating means for attachment to the machine frame, two sets of pulleys defining with one or two drums respectively the path of the belt with twisted part and belt with part in plane correspondence, and connecting members of the drum (s) to the drive shaft of the gluing wheel.

La manipulation d'un module complet d'un seul tenant, éventuellement à l'aide de moyens de levage, s'avère pratiquement aussi simple que celle d'une rampe métallique. Notamment, le positionnement correct de ce module entraíne sans autre un positionnement exact des courroies. De plus, l'inspection et la maintenance d'un tel module sont grandement facilitées une fois ce module sorti de la machine.The manipulation of a complete module in one piece, possibly by means of lifting, practically also proves as simple as a metal ramp. In particular, the positioning correct of this module leads without other exact positioning of belts. In addition, the inspection and maintenance of such a module are greatly facilitated once this module is removed from the machine.

Selon un mode de réalisation préféré, le module comprend un support principal plan vertical, tel qu'une plaque métallique, dont la face externe comprend les moyens d'accrochage au bâti de la machine, et dont la face interne comprend les deux séries de poulies et le ou les tambours d'entraínement des deux courroies. Si désiré, cette face interne comprend, en outre, une rampe métallique de guidage et d'appui de la partie de courroie vrillée de pliage. Cette structure simplifiée facilite notablement sa réalisation et sa mise en place.According to a preferred embodiment, the module comprises a vertical main plane support, such as a metal plate, the face of which external comprises the means for hooking to the frame of the machine, and of which the internal face includes the two sets of pulleys and the drum (s) of the two belts. If desired, this internal face includes, in addition, a metal ramp for guiding and supporting the part of twisted folding strap. This simplified structure significantly facilitates its realization and its implementation.

Selon un mode de réalisation préféré, la face interne du support principal du module ne porte qu'un large tambour unique d'entraínement côte-à-côte des deux courroies, ce support principal présentant un passage de l'arbre d'entraínement de la roue encolleuse pour liaison directe avec le moyeu du tambour. Notamment, ce moyeu présente une surface conique venant en contact avec la surface conique complémentaire de l'extrémité de l'arbre. Cet agencement simplifié limite les pertes de puissance mécanique entre l'arbre d'entraínement et les courroies. De plus, on assure que les vitesses des deux courroies sont pratiquement identiques.According to a preferred embodiment, the internal face of the main module support only carries a single large drum side-by-side drive of the two belts, this main support having a passage of the drive shaft of the gluing wheel for direct connection with the drum hub. In particular, this hub has a conical surface contacting the conical surface complementary to the end of the tree. This simplified arrangement limits mechanical power losses between the drive shaft and belts. In addition, it is ensured that the speeds of the two belts are practically identical.

Avantageusement, le support principal présente un prolongement amont d'extension du trajet de la partie vrillée de la courroie. On optimise ainsi les dimensions du support principal.Advantageously, the main support has a upstream extension of the path of the twisted part of the belt. This optimizes the dimensions of the main support.

Selon un mode de réalisation avantageux, le module comprend en outre un support secondaire plan vertical parallèle au support principal et disposé en vis-à-vis du trajet de la courroie à partie plane dont il porte les poulies de guidage. Ce support secondaire forme la façade interne du module protégeant ainsi le tambour et partiellement les poulies et courroies. Ce support secondaire est particulièrement utile pour porter un dispositif élastique pour une poulie de mise en tension, ce dispositif comprenant une pièce mobile le long d'une lumière rectiligne pratiquée dans le support, et ce à un niveau où le bâti de la machine empêche de le ménager dans le support principal.According to an advantageous embodiment, the module comprises in addition a vertical plane secondary support parallel to the main support and arranged opposite the path of the flat part belt which it carries the guide pulleys. This secondary support forms the internal facade of the module thus protecting the drum and partially the pulleys and belts. This secondary support is particularly useful for carrying a elastic device for a tensioning pulley, this device comprising a movable part along a rectilinear light practiced in the support, and at a level where the machine frame prevents it from spare in the main support.

Avantageusement, le support principal comprend en son bord supérieur des moyens de préhension et/ou de levage tels qu'une paire de poignées. Advantageously, the main support comprises at its edge upper gripping and / or lifting means such as a pair of handles.

Les moyens d'accrochage au bâti appartenant à la face externe du support principal du module peuvent se présenter sous la forme d'une plaque horizontale venant s'appliquer sur la face supérieure d'une pièce du bâti, cette plaque présentant une ou plusieurs encoches ou lumières traversées par des moyens de fixation de la plaque contre la pièce, la longueur des encoches et lumières autorisant un ajustement de la position du module avant serrage des moyens de fixation. De préférence, la pièce du bâti est elle-même montée sur traverse pour réglage de sa position latérale.The means of attachment to the frame belonging to the external face of the main support of the module can be in the form of a horizontal plate applied on the upper face of a part of the frame, this plate having one or more notches or lights traversed by means for fixing the plate against the workpiece, the length of the notches and lights allowing adjustment of the position of the module before tightening the fixing means. Preferably, the room of the frame is itself mounted on a cross member to adjust its position lateral.

L'invention sera mieux comprise à l'étude d'un mode de réalisation pris à titre nullement limitatif et illustré dans les figures annexées dans lesquelles :

  • la figure 1 illustre en perspective le module de pliage selon l'invention tel que vu de l'intérieur, et
  • la figure 2 illustre en perspective le module de la figure 1 tel que vu de l'extérieur.
The invention will be better understood from the study of an embodiment taken without any limitation being implied and illustrated in the appended figures in which:
  • FIG. 1 illustrates in perspective the folding module according to the invention as seen from the inside, and
  • Figure 2 illustrates in perspective the module of Figure 1 as seen from the outside.

Comme illustré sur les figures, un module de pliage 100 est installé en lieu et place d'un dispositif d'encollage sur une pièce de bâti 10 se présentant sous la forme d'un cadre. Deux tubulures 12 et 12' de la partie amont de cette pièce de bâti 10 sont engagées par deux traverses cylindriques de la machine : une de support et une filetée de réglage de la position latérale. L'extrémité aval de ce cadre 10 présente également une encoche semi-circulaire venant s'engager dans une autre traverse cylindrique en correspondance.As illustrated in the figures, a folding module 100 is installed in place of a gluing device on a piece of frame 10 in the form of a frame. Two pipes 12 and 12 'from the upstream part of this frame part 10 are engaged by two crosspieces cylindrical of the machine: a support and a thread for adjusting the lateral position. The downstream end of this frame 10 also has a semicircular notch coming to engage in another cross cylindrical in correspondence.

Comme mieux visible sur la figure 2, le module de pliage 100 est charpenté autour d'une plaque de support principale 20 plane verticale dont la face externe 23 est garnie d'une plaque horizontale d'accrochage 24 venant prendre appui sur la face supérieure de la pièce de bâti 10. Cette plaque 24 comprend une ou plusieurs encoches ou ouvertures oblongues 25 pour le passage de vis de fixation. Ces ouvertures allongées permettent ainsi un ajustement de la position du module 100 par rapport à la pièce de bâti 10 avant serrage. As best seen in Figure 2, the folding module 100 is built around a main support plate 20 vertical plane whose external face 23 is provided with a horizontal hooking plate 24 coming to bear on the upper face of the frame part 10. This plate 24 includes one or more notches or openings oblong 25 for the passage of fixing screws. These elongated openings thus allow an adjustment of the position of the module 100 relative to the frame part 10 before tightening.

Le bord supérieur de cette plaque principale 20 présente deux ouvertures rectangulaires 26 formant ainsi très simplement deux poignées de préhension permettant à un opérateur de sortir ou remettre en place ce module de pliage très facilement. Si nécessaire, une chaíne peut être passée entre ces deux orifices pour accrochage à un moyen de levage.The upper edge of this main plate 20 has two rectangular openings 26 thus very simply forming two handles gripping allowing an operator to exit or replace this folding module very easily. If necessary, a chain can be passed between these two holes for hooking to a lifting means.

Tel qu'illustré sur la figure 1, la face interne 22 de la plaque de support principale 20 porte sensiblement au milieu de sa partie inférieure un tambour d'entraínement 30 monté libre en rotation sur un palier. Le moyeu central conique de ce tambour peut être directement relié à l'extrémité 32 également conique de l'arbre de transmission 34 (figure 2) normalement prévu pour entraíner une roue encolleuse. Cet arbre de transmission 34 vient de la face externe, traverse la pièce de bâti 10 puis un passage ménagé en correspondance dans la plaque principale 20 pour atteindre le moyeu du tambour 30.As illustrated in FIG. 1, the internal face 22 of the plate main support 20 carries substantially in the middle of its lower part a drive drum 30 mounted free to rotate on a bearing. The conical central hub of this drum can be directly connected to the also conical end 32 of the drive shaft 34 (Figure 2) normally designed to drive a gluing wheel. This tree of transmission 34 comes from the external face, crosses the piece of frame 10 then a passage formed in correspondence in the main plate 20 for reach the hub of the drum 30.

Comme bien visible sur les deux figures, la plaque principale 20 comprend un prolongement amont 21 permettant d'installer, contre la face interne 22, une longue rampe métallique vrillée 51 de pliage et retournement de patte latérale de découpe.As clearly visible in the two figures, the main plate 20 includes an upstream extension 21 making it possible to install, against the internal face 22, a long twisted metallic ramp 51 for folding and turning side cutout tab.

Plus particulièrement selon l'invention, cette rampe métallique 51 est recouverte par la partie (a) d'une courroie supérieure 40 défilant dans le même sens que les découpes. A l'extrémité de cette rampe, cette courroie 40 effectue un demi-tour vers le haut (b) autour d'une poulie 41 puis effectue une vrille inversée (c) jusqu'à une poulie supérieure 42 avant de redescendre vers le bas (d) vers une troisième poulie 43 orientant cette courroie 40 autour du tambour d'entraínement 30 selon un angle d'embarrage (e) très important. A la sortie de ce tambour, la courroie repart à l'horizontale (g) vers une poulie 46 où elle effectue un aller-retour (f) autour d'une poulie de mise sous tension 45 pour repartir toujours à l'horizontale (g') vers une poulie 47 située à l'extrémité du prolongement amont 21 la renvoyant (h) au départ de sa trajectoire vrillée (a). Comme on peut l'observer sur la figure 1, l'axe de la poulie 45 passe au travers d'une ouverture longitudinale 44 à l'arrière de laquelle l'autre extrémité 45' de cet axe (figure 2) est tirée vers l'aval par des moyens élastiques non illustrés.More particularly according to the invention, this metal ramp 51 is covered by part (a) of an upper belt 40 running in the same direction as the cutouts. At the end of this ramp, this belt 40 makes an upward turn (b) around a pulley 41 then performs an inverted spin (c) to an upper pulley 42 before to descend downwards (d) towards a third pulley 43 orienting this belt 40 around the drive drum 30 at an angle very important embarrassment. At the exit of this drum, the belt starts again horizontally (g) towards a pulley 46 where it makes a round trip (f) around a tensioning pulley 45 to always start again at the horizontal (g ') towards a pulley 47 located at the end of the extension upstream 21 returning it (h) to the start of its twisted trajectory (a). As we can be seen in Figure 1, the axis of the pulley 45 passes through a longitudinal opening 44 at the rear of which the other end 45 'of this axis (Figure 2) is pulled downstream by elastic means not shown.

Une plaque verticale secondaire 28, mieux visible sur la figure 1, est fixée parallèlement en vis-à-vis de la plaque principale 20 par des entretoises non représentées. La face externe de cette plaque secondaire 28, c'est-à-dire la face orientée vers la plaque principale 20, porte une pluralité de poulies, également non représentées, guidant une courroie inférieure 50 présentant une partie plane (a') en vis-à-vis du tiers aval de la partie vrillée (a) de la courroie supérieure 40. A la hauteur de la poulie 41, cette courroie inférieure 50 est renvoyée vers le bas (b') pour s'enrouler (e') autour du tambour d'entraínement 30 directement à côté de la courroie inférieure 50. En sortie de ce tambour 30, cette courroie inférieure passe (f') autour d'une poulie dont on peut observer la partie extérieure de l'axe 58 coulissant à l'intérieur d'une rainure longitudinale 57 contre l'effort de moyens élastiques de mise en tension non illustrés. Puis cette courroie est renvoyée par un demi-tour vers le haut (h') vers sa trajectoire plane (a').A secondary vertical plate 28, better visible in the figure 1, is fixed parallel vis-à-vis the main plate 20 by spacers not shown. The external face of this secondary plate 28, i.e. the face facing the main plate 20, carries a plurality of pulleys, also not shown, guiding a belt lower 50 having a flat part (a ') facing the downstream third of the twisted part (a) of the upper belt 40. At the height of the pulley 41, this lower belt 50 is returned downwards (b ') to wind up (e ') around the drive drum 30 directly next to the belt lower 50. At the outlet of this drum 30, this lower belt passes (f ') around a pulley whose outer part of the axis can be observed 58 sliding inside a longitudinal groove 57 against the force of elastic tensioning means not shown. Then this belt is returned by a half-turn upwards (h ') towards its flat trajectory (a').

Comme on peut le constater à la lecture de ce qui précède, la mise en oeuvre de ce module de pliage 100 est relativement aisée dans la mesure où il suffit de le mettre en place en le descendant lentement à l'aide des poignées 26 pour le poser sur la face supérieure de la pièce de bâti 10. Après un réglage de la position, on serre les vis de serrage traversant les encoches 25, puis on réalise l'accouplement de l'extrémité conique 32 de l'arbre de transmission 34 au moyeu également conique du tambour 30. Une fois la machine mise en route, ce tambour entraíne simultanément les deux courroies 40 et 50 qui défilent donc pratiquement à la même vitesse.As can be seen from the above, the implementation of this folding module 100 is relatively easy in the measure just put it in place by lowering it slowly to using the handles 26 to place it on the upper face of the workpiece frame 10. After adjusting the position, tighten the clamping screws passing through the notches 25, then the end is coupled conical 32 of the drive shaft 34 to the hub also conical of the drum 30. Once the machine is started, this drum drives simultaneously the two belts 40 and 50 which therefore pass virtually at the same speed.

Ainsi, une patte latérale de découpe arrivant au niveau de la rampe métallique 51 entre en contact avec la courroie supérieure 40 qui l'entraíne tout en effectuant son pliage. Lorsque cette patte est retournée à plus de 90 degrés, la partie inférieure de la découpe est également appréhendée par la courroie d'entraínement inférieure 50, et la fin du pliage s'effectue de manière fiable entre les deux courroies progressant à la même vitesse, évitant ainsi tout travers de position de la découpe.Thus, a lateral cutting tab arriving at the level of the metal ramp 51 comes into contact with the upper belt 40 which drives it while folding. When this paw is returned to over 90 degrees, the bottom of the cutout is also apprehended by the lower drive belt 50, and the end of folding takes place reliably between the two belts advancing at the same speed, thus avoiding any positional cut-out.

De nombreuses améliorations peuvent être apportées à ce module de pliage dans le cadre des revendications.Many improvements can be made to this folding module within the scope of the claims.

Claims (7)

  1. Device for folding blanks based on a pair of driving belts : one driving belt (40) having an upper twisted folding part (a) and the other driving belt (50) having a corresponding lower planar part (a'), said device being adapted to be installed instead of a gluing device comprising a gluing wheel rotated by a shaft (34), characterized by the fact that the device is a removable module (100) including securing means (24) for securing it to the frame (10) of the machine, two series of pulleys defining together with one (30) or two drive drums respectively the path of the belt with the twisted part and the belt with the corresponding planar part, and connecting elements (32) of the drum or drums (30) to the drive shaft (34) of the gluing wheel.
  2. Device according to claim 1, characterized by the fact that the module comprises a vertical planar main support (20), the external surface (23) of which comprises the securing means (24) to the frame (10) of the machine, and the internal surface (22) of which comprises the two series of pulleys and the drive drum (30) or drums of the two belts (40, 50).
  3. Device according to claim 2, characterized by the fact that the internal surface (22) of the main support (20) of the module only carries a single drive drum (30) for driving the two belts (40, 50) side-by-side, said main support having a passage for the drive shaft (34) of the gluing wheel for direct connection with the hub of the drum (30).
  4. Device according to claim 2, characterized by the fact that the main support (20) has an upstream prolongation (21) to provide an extension for the path of the twisted part (a) of the belt (40).
  5. Device according to claim 2, characterized by the fact that the module (100) comprises a secondary vertical planar support (28) extending parallelly to the main support (20) and arranged opposite the path of the belt with the planar part (50) of which it carries the guiding pulleys.
  6. Device according to claim 2, characterized by the fact that the main support (20) comprises in its upper edge gripping and/or lifting means (26).
  7. Device according to claim 2, characterized by the fact that the securing means to the frame belonging to the external surface (23) of the main support (20) of the module (100) have the form of a horizontal plate (24) coming to rest on the upper surface of a frame piece (10), said plate having one or several slots or openings (25), through which extend means for fastening the plate against the piece, the length of the slots and openings allowing an adjustment of the position of the module (100) before clamping with the fastening means.
EP96114939A 1995-09-21 1996-09-18 Modular folder unit for sheet folder-gluer apparatus Expired - Lifetime EP0764518B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH02672/95A CH691118A5 (en) 1995-09-21 1995-09-21 modular folding device in a folding gluing machine plate elements.
CH267295 1995-09-21
CH2672/95 1995-09-21

Publications (2)

Publication Number Publication Date
EP0764518A1 EP0764518A1 (en) 1997-03-26
EP0764518B1 true EP0764518B1 (en) 2000-01-26

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Application Number Title Priority Date Filing Date
EP96114939A Expired - Lifetime EP0764518B1 (en) 1995-09-21 1996-09-18 Modular folder unit for sheet folder-gluer apparatus

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US (1) US5762597A (en)
EP (1) EP0764518B1 (en)
JP (1) JP3224200B2 (en)
KR (1) KR100242141B1 (en)
AT (1) ATE189159T1 (en)
CH (1) CH691118A5 (en)
DE (1) DE69606367T2 (en)
ES (1) ES2143119T3 (en)
TW (1) TW459652U (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6565501B1 (en) * 2000-11-01 2003-05-20 The Procter & Gamble Company Method and apparatus for folding a web
TWI340083B (en) * 2006-12-14 2011-04-11 Bobst Sa Braille printing device
CN103373000B (en) * 2012-04-26 2016-02-17 上海旭恒精工机械制造有限公司 A kind of box machine of sticking with paste transmits assembling device
EP2844459A1 (en) * 2012-05-03 2015-03-11 Bobst Mex Sa Machine for processing elements in sheet form, including a feed board fitted with conveying means
DE102016006504A1 (en) * 2016-05-28 2017-12-14 Kolbus Gmbh & Co. Kg Device for applying adhesive to predominantly flat material blanks
KR101752382B1 (en) 2016-11-10 2017-06-30 주식회사 원익큐브 Folding system for paper pannel having variable function and variable method thereof
CN108127969A (en) * 2017-12-23 2018-06-08 温州易得机械科技有限公司 A kind of viscose glue mechanism of carton process equipment
KR102065095B1 (en) 2018-04-13 2020-01-10 심석래 Impact energy reduction anchor

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Publication number Priority date Publication date Assignee Title
DE850988C (en) * 1944-11-06 1952-09-29 Bobst & Sohn A G J Machine for folding and gluing cardboard blanks
FR1044793A (en) * 1950-11-27 1953-11-20 Automatic machine for printing, creasing, gluing, folding and finishing boxes or packaging
FR2358976A1 (en) * 1976-07-20 1978-02-17 Ibanez Pascual FOLDER-GLUER MACHINE
US4547183A (en) * 1982-11-18 1985-10-15 Don Mowry Flexo Parts, Inc. Corrugated box machine
US4795416A (en) * 1983-05-24 1989-01-03 Sequa Corporation Apparatus for C-folding paper with variable spacing
US5114392A (en) * 1989-09-28 1992-05-19 The International Paper Box Machine Co., Inc. Apparatus for folding paper boxes
US5151075A (en) * 1990-11-05 1992-09-29 J & L Industries, Inc. Carton folding apparatus

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ES2143119T3 (en) 2000-05-01
DE69606367T2 (en) 2000-06-15
KR100242141B1 (en) 2000-03-02
CH691118A5 (en) 2001-04-30
DE69606367D1 (en) 2000-03-02
US5762597A (en) 1998-06-09
EP0764518A1 (en) 1997-03-26
ATE189159T1 (en) 2000-02-15
JPH09124229A (en) 1997-05-13
JP3224200B2 (en) 2001-10-29
TW459652U (en) 2001-10-11

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