EP0267431A1 - Device for piling flat objects - Google Patents

Device for piling flat objects Download PDF

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Publication number
EP0267431A1
EP0267431A1 EP87114757A EP87114757A EP0267431A1 EP 0267431 A1 EP0267431 A1 EP 0267431A1 EP 87114757 A EP87114757 A EP 87114757A EP 87114757 A EP87114757 A EP 87114757A EP 0267431 A1 EP0267431 A1 EP 0267431A1
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EP
European Patent Office
Prior art keywords
boxes
box
stack
belts
supporting
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.)
Granted
Application number
EP87114757A
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German (de)
French (fr)
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EP0267431B1 (en
Inventor
Marc Cuzin
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.)
Martin SA
Original Assignee
Martin SA
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Publication date
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Publication of EP0267431A1 publication Critical patent/EP0267431A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • B65H29/14—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers and introducing into a pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/20—Delivering or advancing articles from machines; Advancing articles to or into piles by contact with rotating friction members, e.g. rollers, brushes, or cylinders
    • B65H29/22—Delivering or advancing articles from machines; Advancing articles to or into piles by contact with rotating friction members, e.g. rollers, brushes, or cylinders and introducing into a pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4212—Forming a pile of articles substantially horizontal
    • B65H2301/42122—Forming a pile of articles substantially horizontal by introducing articles from under the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B65H2701/1766—Cut-out, multi-layer, e.g. folded blanks or boxes

Definitions

  • the present invention relates to a device for stacking flat objects, in particular printed boxes folded flat, comprising means for bringing the boxes under a stack already formed in a stacking station comprising at least one front stop and a device squaring the boxes, means for supporting the front and rear of the already formed stack of boxes and means for supporting the front and rear of a new box to be stacked.
  • Devices of the kind to which the invention relates are generally used in machines for shaping corrugated cardboard in which they are placed at the end of the machine, just before a stringing station.
  • French Patent No. 2,087,732 provides a description of the components of one such stacking device.
  • the present invention aims to eliminate the aforementioned drawbacks.
  • the invention as characterized in the claims, solves the problem of creating a device for stacking flat objects authorizing the feeding under a stack already formed of a printed and folded box, while reducing to the extreme the friction distance between the lower box of the already formed stack and the box being received under the stack.
  • FIG. 1 schematically represent the operating cycle of the stacking device.
  • the stacking device shown in FIG. 1 comprises a lower conveyor 1 constituted by a series of endless belts 2 placed side by side and an upper conveyor 3, also constituted by endless belts 4 placed one next to the other.
  • the belts 2 of the lower conveyor 1 are supported, in the stacking zone, by drive pulleys 5, as well as by a lifting member 6 pivotally mounted on the shaft 8 of the idler pulleys 9.
  • the boxes 15 are brought onto the belts 2 of the lower conveyor 1 by a second lower conveyor 62 formed of belts 63 placed side by side between the belts 2.
  • the belts 63 are supported by drive pulleys 64 mounted on the same shaft 65 as the drive pulleys 5 of the lower conveyor 1 (see FIG.
  • the stacking device also comprises a support member 10 from the front of the stack of boxes 11, a support member 12 from the rear of the stack of boxes 11 and a support member 13 from the rear of the box 15.
  • the support member 10 of the front of the stack of boxes 11 is constituted by a comb 17 (see FIGS. 6, 8 and 9) moving in the direction indicated by the arrow 14, this in synchronism with the 'advance of the box 15 arriving in the direction indicated by the arrow 16 in the stacking area.
  • the movement of the comb 17 is also synchronized with the movement of the lifting member 6, the movement of the support member 13 from the rear of the boxes and the movement of the support member 12 from the rear of the stack of boxes 11.
  • the support member 13 of the rear of the box 15 is constituted by a series of sectors 61 placed side by side along a transverse shaft 60 (see FIG. 10).
  • the stacking station comprises a front stop 18 and a squaring device 19 for the stack of boxes 11.
  • the front stop is stationary, but adjustable, depending on the format of the boxes to be stacked, while the squaring device 19 is driven in a continuous back-and-forth movement in the direction indicated by the double arrow 20.
  • the phase shown in Figure 1 corresponds to the arrival of a new box 15 to be stacked under the stack of boxes 11 already formed.
  • the new box 15 leaving the lower 1 and upper 3 conveyors is frictionally driven by the single lower conveyor 1 and the comb 17 begins to move in the direction of the arrow 14.
  • the support members 12 and 13 of the back of stack 11 and of the box 15 are also moving in the direction indicated by the arrows 21 and 22 and the lifting member 6 begins to move in the direction indicated by the arrow 23.
  • the setting in motion of all the members mentioned above can be controlled for example by a means of detecting the arrival of the new box 15 in the stacking area.
  • This detection means could for example be constituted by a photoelectric cell detecting the front of the new box 15 and transmitting this information to the control devices of the various organs mentioned above. At this stage of operation, no friction occurs between the box 15 and the belts 2.
  • the stacking device is shown in Figure 2, in the phase corresponding to the start of the establishment of the new box 15 under the stack 11.
  • the front of the new box 15 is brought against the support member 10 from the front of the stack 11 by belts 2.
  • the support member 10 from the front of the stack will be moved so that it goes from position 10 ⁇ to position 10 ⁇ .
  • the support member 13 from the rear of the box 15 will come against it passing from position 13 ⁇ to position 13 ⁇ and the lifting member 6 from the front of the box will have been moved from position 6 ⁇ to position 6 ⁇ .
  • the support member 12 at the rear of the stack of boxes 11 will, in turn, have turned in the direction indicated by the arrow 21.
  • FIG. 3 represents the terminal phase of placing the new box 15 under the stack 11.
  • the lifting member 6 of the front of the box occupies its highest position, represented by 6 ′′′.
  • the support member 10 at the front of the stack of boxes will be at the end of its travel, in its position 10 ′′′ and the support member 13 at the back of the box will continue its rotation in the direction indicated by the arrow 22.
  • the support member 12 from the rear of the stack 11, still rotating in the direction indicated by the arrow 21, will have its notch 24 facing the rear edge of the box 15, so as to that it can be placed under the stack 11 without its rear edge being damaged by said support member 12.
  • friction will occur between the belts 2 and the box 15.
  • FIG. 4 shows the position of the various elements at the end of the cycle for setting up the box 15 under the stack 11.
  • the support member 10 at the front of the stack begins to move in the direction of the arrow 25 and therefore supports the front part of the stack, thereby authorizing the descent towards of the arrow 26, of the lifting member 6.
  • the rear of the stack is still supported by the support member 13 from the rear of the box 15 and, as soon as the latter has continued its course in the direction arrow 22, the support member 12 of the back of the stack 11 will come against the back of the sheet 15 thus supporting the back of the stack 11, as shown in Figure 5 in using which the arrival of a new sheet to be stacked is shown.
  • This sheet 27, driven by the belts 2 will be brought into the position of the sheet 15 of FIG.
  • Figure 6 is a side view of the support members of the front of the stack and boxes.
  • the support member at the front of the stack comprises a comb 17 fixed with the aid of the screws 30 to a tubular cross member 31, each of the ends of which is attached to a lever 32 provided with two rollers 33 guided in a slide 34.
  • the rollers 33 are mounted against the lever 32 using the pins 35.
  • the back and forth movement of the comb 17 in the direction indicated by the double arrow 36 is generated by a cam (not shown).
  • This cam transmits a pendular movement, according to arrow 37, to an oscillating lever 38 pivoting around the shaft 39, this using a pull bar 40.
  • One end of the oscillating lever 38 is connected by an axis 41 to the pull tab 40, while the other end is connected to the lever 32 by a slide 42 in which engages a roller 43 fixed on said lever 32.
  • the lifting member 6 consists of a set of several levers 45 placed side by side across the width of the stacking device.
  • the levers 45 have one of their ends fixed to the transverse shaft 51 by means of a key 52, while their other end is provided with double rollers 53 (see FIG. 9).
  • the transverse shaft 51 is driven by an oscillating movement allowing the double rollers 53 to pass from a 6 ⁇ position to a 6 ′′′ position.
  • the movement of the transverse shaft 51 is produced from a cam and lever device (not shown).
  • the levers 45 are arranged so that the double rollers 53 are aligned so as to support the belts 2 of the lower conveyor 1.
  • the boxes arriving in the stacking area in the direction indicated by the arrow 53 and coming to be stacked therein will be evacuated in successive packets from the top of the stack using a conveyor 54 composed of several belts 55 placed side by side in the width of the front stop 18. All of the the assembly is arranged between two lateral frames 56 and 57 supporting the control devices with cams and levers (not shown). The lateral frames 56 and 57 also receive against each interior face the slides 34 necessary for guiding the comb 17.
  • FIG. 7 is a side view of the stack and of the support member 12 from the rear of the stack of boxes 11 and of the support member 13 of the inlet of the box 15 to be stacked.
  • the support member 12 consists of a sleeve 58 mounted on a transverse shaft 59 driven by a continuous rotational movement in the direction of the arrow 21.
  • the sleeve 58 has a notch 24 milled over its entire length. This notch 24 is intended to provide a passage for the rear edge of the box 15, when the latter comes to be placed under the lower box of the stack 11.
  • the sleeve 58 is, moreover, machined so as to allow the passage of the squaring device 19 for stacked boxes (see Figure 10).
  • the sleeve 58 is fixed to the transverse shaft 59 using a key 65. It is retained laterally on this transverse shaft using stop rings (not shown).
  • FIG 8 is a partial sectional view of the support member from the front of the stack of boxes.
  • the double rollers 53 have been shown in phantom.
  • the comb 17 is constituted by a plurality of doi 66 fixed side by side, along the tubular cross member 31, using the screws 30.
  • the fingers 66 are mounted on a reinforcement 67 welded to the lower part of the tubular cross member 31. The latter is fitted at its ends with levers 32 to which it is welded.
  • the front stop 18 is arranged so as to have openings 68 in its lower part. These openings allow the passage of the fingers 66 through the front stop 18.
  • Figure 9 is a plan view along B of Figure 8.
  • This figure also shows the arrangement tion of the levers 45 supporting the double rollers 53 over which the belts 2 of the lower conveyor 1 pass (see FIG. 6).
  • the front stop 18 has been shown in phantom.
  • FIG. 10 is a view along A of FIG. 7 showing the middle part of the support member 12 from the rear of the stack of boxes 11 and of the support member 13 from the rear of the box 15 to stack.
  • This figure also shows the lateral arrangement of the drive pulleys 5 and 64 of the conveyors 1 and 62 with respect to the sectors 61 of the support member 13 of the rear of the box 15 and to the sleeve 58 of the support member. support 12 from the back of the stack of boxes 11.

Abstract

Des boites (15) sont transportées par des courroies (2) de façon à venir s'empiler par dessous à la partie inférieure d'une pile de boites (11) déjà formée dans une station d'empilage. La pile de boites (11) est soutenue à sa partie avant, pendant l'empilage d'une nouvelle boite (15), par un premier organe de support (10) se déplaçant linéairement et à sa partie arrière par un second organe de support (12) animé d'un mouvement rotatif continu. Les boites (15) à empiler sont supportées à leur partie avant par un organe de relevage (6) placé sous les courroies (2) et à leur partie arrière par un organe de support (13) agissant sur la partie inférieure de la boite (15) en passant entre lesdites courroies (2). Ce déplacement linéaire du premier organe de support (10) correspond au déplacement linéaire de la boite (15) entrainée par les courroies (2).Boxes (15) are transported by belts (2) so as to be stacked from below at the bottom of a stack of boxes (11) already formed in a stacking station. The stack of boxes (11) is supported at its front part, during the stacking of a new box (15), by a first support member (10) moving linearly and at its rear part by a second support member (12) driven by a continuous rotary movement. The boxes (15) to be stacked are supported at their front part by a lifting member (6) placed under the belts (2) and at their rear part by a support member (13) acting on the lower part of the box ( 15) passing between said belts (2). This linear movement of the first support member (10) corresponds to the linear movement of the box (15) driven by the belts (2).

Description

La présente invention concerne un dispositif d'empilage d'objets plats, notamment de boites imprimées et pliées à plat, comprenant des moyens pour amener les boites sous une pile déjà formée dans une station d'empilage comportant au moins une butée avant et un dispositif d'équerrage des boites, des moyens pour soutenir l'avant et l'arrière de la pile de boites déjà formée et des moyens pour soutenir l'avant et l'arrière d'une nouvelle boite à empiler.The present invention relates to a device for stacking flat objects, in particular printed boxes folded flat, comprising means for bringing the boxes under a stack already formed in a stacking station comprising at least one front stop and a device squaring the boxes, means for supporting the front and rear of the already formed stack of boxes and means for supporting the front and rear of a new box to be stacked.

Les dispositifs du genre de celui auquel se rapporte l'invention sont généralement utilisés dans des machines de façonnage du carton ondulé dans lesquelles ils sont placés en fin de machine, juste avant une station de ficelage.Devices of the kind to which the invention relates are generally used in machines for shaping corrugated cardboard in which they are placed at the end of the machine, just before a stringing station.

Parmi les dispositifs connus, certains sont dits à empilage par dessous, car chaque nouvelle boite imprimée et pliée est introduite au-dessous du paquet en cours de formation. La partie supérieure du paquet est périodiquement évacuée vers la station de ficelage.Among the known devices, some are said to be stacked from below, since each new printed and folded box is introduced below the package being formed. The upper part of the package is periodically removed to the stringing station.

Le brevet français n o 2 087 732 donne une description des éléments constitutifs d'un dispositif d'empilage de ce genre.French Patent No. 2,087,732 provides a description of the components of one such stacking device.

Dans le dispositif décrit par le brevet français n o 2 087 732, on a cherché à diminuer les problèmes de frottement entre les boites déjà empilées et celles venant de s'empiler par en dessous, ainsi qu'à supprimer la friction pouvant se produire entre les organes de transport et les boites qu'ils amènent au point d'empilage. Pour ce faire, on a utilisé un transporteur amenant l'avant de la boite à empiler contre une butée, ledit transporteur étant associé à des galets intercalés entre ses courroies au voisinage de l'avant de la boite à empiler, ainsi qu'à un mécanisme constitué de plusieurs éléments animés d'un mouvement relatif, destiné à soutenir l'arrière du paquet de boites formées tout en autorisant la mise en place, sous le paquet, d'une nouvelle boite, cette nouvelle boite étant à son tour soutenue par lesdits éléments. Un tel dispositif présente toutefois encore de graves inconvénients, car, s'il est évident que lorsque toutes les boites sont empilées, seul un frottement résiduel se produit à l'endroit des galets situés au voisinage de l'avant du paquet, il n'en va pas de même lors de l'empilage d'une nouvelle boite, car la partie supérieure de celle-ci frotte sur une distance relativement importante contre la partie inférieure de la boite se trouvant déjà dans le paquet. La distance du frottement étant représentée par la distance existant entre les galets et la partie frontale de la butée avant. Ce frottement, outre le fait qu'il endommage l'impression pouvant se trouver sur les faces de la boite, a un effet désastreux en ce qui concerne le maintien dans leur position pliée des différents flancs de la boite. En effet, ceux-ci viennent d'être encollés et pliés et la colle non encore prise a tendance à cisailler et à ne plus assurer, par la suite, l'adhérence désirée pour le collage des flancs. De plus lors de l'empilage de boites présentant des découpes irrégulières de leurs flances ou des ouvertures telles qu'ouvertures d'aération, ou ouvertures destinées à la manutention de la boite, il se produit une imbrication non désirable conduisant à un bourrage.In the device described in French Patent No. 2,087,732, attempts to reduce the problems of friction between the boxes already stacked and those from pile from below and to remove the friction may occur between the transport members and the boxes they bring to the stacking point. To do this, we used a conveyor bringing the front of the stacking box against a stop, said conveyor being associated with rollers interposed between its belts in the vicinity of the front of the stacking box, as well as a mechanism made up of several elements animated by a relative movement, intended to support the rear of the pack of formed boxes while authorizing the establishment, under the package, of a new box, this new box being in turn supported by said elements. However, such a device still has serious drawbacks because, if it is obvious that when all the boxes are stacked, only residual friction occurs at the place of the rollers located in the vicinity of the front of the package, it does not the same is not true when stacking a new box, because the upper part of the latter rubs over a relatively large distance against the lower part of the box which is already in the package. The distance of the friction being represented by the distance existing between the rollers and the front part of the front stop. This friction, in addition to the fact that it damages the impression which may be on the faces of the box, has a disastrous effect as regards the maintenance in their folded position of the different sides of the box. Indeed, these have just been glued and folded and the glue not yet taken tends to shear and no longer ensure, thereafter, the desired adhesion for gluing the sides. In addition when stacking boxes having irregular cutouts of their sides or openings such as ventilation openings, or openings for handling the box, there is an undesirable nesting leading to jamming.

La présente invention a pour but d'éliminer les inconvénients précités. A cet effet, l'invention, telle qu'elle est caractérisée dans les revendications, résout le problème consistant à créer un dispositif d'empilage d'objets plats autorisant l'amenée sous une pile déjà formée d'une boite imprimée et pliée, tout en réduisant à l'extrème la distance de frottement entre la boite inférieure de la pile déjà formée et la boite en cours d'arrivée sous la pile.The present invention aims to eliminate the aforementioned drawbacks. To this end, the invention, as characterized in the claims, solves the problem of creating a device for stacking flat objects authorizing the feeding under a stack already formed of a printed and folded box, while reducing to the extreme the friction distance between the lower box of the already formed stack and the box being received under the stack.

Les avantages obtenus gràce à l'utilisation de cette invention résident essentiellement dans le fait que les boites à empiler ne subissent plus qu'un frottement à leur extrémité, lors de leur amenée sous la pile déjà formée, ce qui permet d'éviter à la fois la détérioration des parties imprimées de la boite et le décollage, par friction, de ses flancs et élimine les risques de bourrage.The advantages obtained thanks to the use of this invention reside essentially in the fact that the stacking boxes only undergo a friction at their end, when they are brought under the already formed pile, which makes it possible to avoid the both the deterioration of the printed parts of the box and the release, by friction, of its sides and eliminates the risk of jamming.

Un mode d'exécution de l'invention est exposé ci-après à l'aide de dessins dans lesquels :

  • les figures 1 à 5 représentent schématiquement le cycle de fonctionnement du dispositif,
  • la figure 6 est une vue de profil des organes pour supporter l'avant des boites,
  • la figure 7 est une vue de profil des organes pour supporter l'arrière des boites et l'arrière de la pile de boites,
  • la figure 8 est une vue en coupe partielle de l'organe supportant l'avant de la pile des boites,
  • la figure 9 est une vue en plan de la figure 8,
  • la figure 10 est une selon A de la figure 7.
An embodiment of the invention is set out below with the aid of drawings in which:
  • FIGS. 1 to 5 schematically represent the operating cycle of the device,
  • FIG. 6 is a side view of the members for supporting the front of the boxes,
  • FIG. 7 is a side view of the members for supporting the rear of the boxes and the rear of the stack of boxes,
  • FIG. 8 is a partial section view of the member supporting the front of the stack of boxes,
  • FIG. 9 is a plan view of FIG. 8,
  • FIG. 10 is one along A of FIG. 7.

Les figures 1 à 5 représentent schématiquement le cycle de fonctionnement du dispositif d'empilage. Le dispositif d'empilage représenté à la figure 1 comprend un transporteur inférieur 1 constitué par une série de courroies 2 sans fin placées côte à côte et un transporteur supérieur 3, lui aussi constitué par des courroies sans fin 4 placées l'une à côté de l'autre. Les courroies 2 du transporteur inférieur 1 sont supportées, dans la zone d'empilage, par des poulies d'entrainement 5, ainsi que par un organe de relevage 6 monté de façon pivotante sur l'arbre 8 des poulies de renvoi 9. Les boites 15 sont amenées sure les courroies 2 du transporteur inférieur 1 par un second transporteur inférieur 62 formé de courroies 63 placées côte à côte entre les courroies 2. Les courroies 63 sont supportées par des poulies d'entrainement 64 montées sur le même arbre 65 que les poulies d'entrainement 5 du transporteur inférieur 1 (voir figure 10). Le dispositif d'empilage comprend aussi un organe de support 10 de l'avant de la pile de boites 11, un organe de support 12 de l'arrière de la pile de boites 11 et un organe de support 13 de l'arrière de la boite 15. L'organe de support 10 de l'avant de la pile de boites 11 est constitué par un peigne 17 (voir figures 6, 8 et 9) se déplaçant dans le sens indiqué par la flèche 14, ceci en synchronisme avec l'avance de la boite 15 arrivant suivant le sens indiqué par la flèche 16 dans la zone d'empilage. Le déplacement du peigne 17 est également synchronisé avec le mouvement de l'organe de relevage 6, le mouvement de l'organe de support 13 de l'arrière des boites et le mouvement de l'organe de support 12 de l'arrière de la pile de boites 11. L'organe de support 13 de l'arrière de la boite 15 est constitué par une série de secteurs 61 placés côte à côte le long d'un arbre transversal 60 (voir figure 10).Figures 1 to 5 schematically represent the operating cycle of the stacking device. The stacking device shown in FIG. 1 comprises a lower conveyor 1 constituted by a series of endless belts 2 placed side by side and an upper conveyor 3, also constituted by endless belts 4 placed one next to the other. The belts 2 of the lower conveyor 1 are supported, in the stacking zone, by drive pulleys 5, as well as by a lifting member 6 pivotally mounted on the shaft 8 of the idler pulleys 9. The boxes 15 are brought onto the belts 2 of the lower conveyor 1 by a second lower conveyor 62 formed of belts 63 placed side by side between the belts 2. The belts 63 are supported by drive pulleys 64 mounted on the same shaft 65 as the drive pulleys 5 of the lower conveyor 1 (see FIG. 10). The stacking device also comprises a support member 10 from the front of the stack of boxes 11, a support member 12 from the rear of the stack of boxes 11 and a support member 13 from the rear of the box 15. The support member 10 of the front of the stack of boxes 11 is constituted by a comb 17 (see FIGS. 6, 8 and 9) moving in the direction indicated by the arrow 14, this in synchronism with the 'advance of the box 15 arriving in the direction indicated by the arrow 16 in the stacking area. The movement of the comb 17 is also synchronized with the movement of the lifting member 6, the movement of the support member 13 from the rear of the boxes and the movement of the support member 12 from the rear of the stack of boxes 11. The support member 13 of the rear of the box 15 is constituted by a series of sectors 61 placed side by side along a transverse shaft 60 (see FIG. 10).

La station d'empilage comporte une butée avant 18 et un dispositif d'équerrage 19 de la pile de boites 11. La butée avant est immobile, mais réglable, en fonction du format des boites à empiler, alors que le dispositif d'équerrage 19 est animé d'un mouvement continu de va-et-vient dans le sens indiqué par la double flèche 20.The stacking station comprises a front stop 18 and a squaring device 19 for the stack of boxes 11. The front stop is stationary, but adjustable, depending on the format of the boxes to be stacked, while the squaring device 19 is driven in a continuous back-and-forth movement in the direction indicated by the double arrow 20.

La phase représentée à la figure 1 correspond à l'arrivée d'une nouvelle boite 15 devant être empilée sous la pile de boites 11 déjà formée. A cet instant, la nouvelle boite 15 sortant des transporteurs inférieur 1 et supérieur 3 est entrainée par friction par le seul transporteur inférieur 1 et le peigne 17 commence à se déplacer dans la direction de la flèche 14. Les organes de support 12 et 13 de l'arrière de la pile 11 et de la boite 15 sont également en mouvement dans le sens indiqué par les flèches 21 et 22 et l'organe de relevage 6 commence à se déplacer dans le sens indiqué par la flèche 23. La mise en mouvement de tous les organes mentionnés ci-dessus peut être pilotée par exemple par un moyen de détection de l'arrivée de la nouvelle boite 15 dans la zone d'empilage. Ce moyen de détection, non représenté ici, pourrait par exemple être consititué par une cellule photo-électrique détectant l'avant de la nouvelle boite 15 et transmettant c ette information aux dispositifs de commande des divers organes sus-mentionnés. A ce stade de fonctionnement, aucun frottement n'intervient entre la boite 15 et les courroies 2.The phase shown in Figure 1 corresponds to the arrival of a new box 15 to be stacked under the stack of boxes 11 already formed. At this instant, the new box 15 leaving the lower 1 and upper 3 conveyors is frictionally driven by the single lower conveyor 1 and the comb 17 begins to move in the direction of the arrow 14. The support members 12 and 13 of the back of stack 11 and of the box 15 are also moving in the direction indicated by the arrows 21 and 22 and the lifting member 6 begins to move in the direction indicated by the arrow 23. The setting in motion of all the members mentioned above can be controlled for example by a means of detecting the arrival of the new box 15 in the stacking area. This detection means, not shown here, could for example be constituted by a photoelectric cell detecting the front of the new box 15 and transmitting this information to the control devices of the various organs mentioned above. At this stage of operation, no friction occurs between the box 15 and the belts 2.

Le dispositif d'empilage est représenté, à la figure 2, dans la phase correspondant au début de la mise en place de la nouvelle boite 15 sous la pile 11. L'avant de la nouvelle boite 15 est amené contre l'organe de support 10 de l'avant de la pile 11 par des courroies 2. Au fur et à mesure que la nouvelle boite 15 avance dans la direction indiquée par la flèche 16, l'organe de support 10 de l'avant de la pile sera déplacé de façon à ce qu'il passe de la position 10ʹ à la position 10ʺ. Dans le même temps, l'organe de support 13 de l'arrière de la boite 15 sera venu contre celle-ci en passant de la position 13ʹ à la position 13ʺ et l'organe de relevage 6 de l'avant de la boite aura été déplacé de la position 6ʹ à la position 6ʺ. L'organe de support 12 de l'arrière de la pile de boites 11 aura, quant à lui, tourné dans le sens indiqué par la flèche 21. Dans cette phase, aucun frottement se produit entre la courroie 2 et la boite 15, car l'avance de l'organe de support 10 est sensiblement la même que l'avance des courroies 2. De même, il n'y aura pas de frottement entre l'organe de support 13 de la partie arrière de la boite 15 et celle-ci, car on aura ajusté la vitesse circonférentielle de l'organe de support 13 en fonction de la vitesse linéaire d'avance de la boite 15.The stacking device is shown in Figure 2, in the phase corresponding to the start of the establishment of the new box 15 under the stack 11. The front of the new box 15 is brought against the support member 10 from the front of the stack 11 by belts 2. As the new box 15 advances in the direction indicated by the arrow 16, the support member 10 from the front of the stack will be moved so that it goes from position 10ʹ to position 10ʺ. At the same time, the support member 13 from the rear of the box 15 will come against it passing from position 13ʹ to position 13ʺ and the lifting member 6 from the front of the box will have been moved from position 6ʹ to position 6ʺ. The support member 12 at the rear of the stack of boxes 11 will, in turn, have turned in the direction indicated by the arrow 21. In this phase, no friction occurs between the belt 2 and the box 15, because the advance of the support member 10 is substantially the same as the advance of the belts 2. Similarly, there will be no friction between the support member 13 of the rear part of the box 15 and the latter, since the circumferential speed of the support member 13 will have been adjusted as a function of the linear speed of advance of the box 15.

La figure 3 représente la phase terminale de la mise en plae de la nouvelle boite 15 sous la pile 11. Comme le montre la figure, l'organe de relevage 6 de l'avant de la boite occupe sa position la plus haute, représentée en 6‴. L'organe de support 10 de l'avant de la pile de boites sera en fin de course, dans sa position 10‴ et l'organe de support 13 de l'arrière de la boite continuera sa rotation dans le sens indiqué par la flèche 22. A cet instant, l'organe de support 12 de l'arrière de la pile 11, toujours en rotation dans le sens indiqué par la flèche 21, présentera son encoche 24 en regard du bord arrière de la boite 15, de façon à ce que celle-ci puisse venir se placer sous la pile 11 sans que son bord arrière soit endommagé par ledit organe de support 12. Pendant un très court instant, un frottement se produira entre les courroies 2 et la boite 15. Cependant, de par la conception de l'organe de relevage 6 et de l'organe de support 10, ce frottement interviendra sur une distance très courte, réduisant le risque de détérioration de la boite 15. En effet, le frottement des courroies 2 sur la face inférieure de la boite 15 intervient en fin de course de la boite 15 et s'effectue selon une tangente à l'arc formé par la position de courroie 2 passant autour des double galets 53 de l'organe de relevage 6.FIG. 3 represents the terminal phase of placing the new box 15 under the stack 11. As shown in the figure, the lifting member 6 of the front of the box occupies its highest position, represented by 6 ‴. The support member 10 at the front of the stack of boxes will be at the end of its travel, in its position 10 ‴ and the support member 13 at the back of the box will continue its rotation in the direction indicated by the arrow 22. At this instant, the support member 12 from the rear of the stack 11, still rotating in the direction indicated by the arrow 21, will have its notch 24 facing the rear edge of the box 15, so as to that it can be placed under the stack 11 without its rear edge being damaged by said support member 12. For a very short time, friction will occur between the belts 2 and the box 15. However, by the design of the lifting member 6 and the support member 10, this friction will occur over a very short distance, reducing the risk of damage to the box 15. Indeed, the friction of the belts 2 on the underside of the box 15 intervenes at the end of the race of the box 15 and takes place along a tangent to the arc formed by the belt position 2 passing around the double rollers 53 of the lifting member 6.

La figure 4 montre la position des divers éléments lors de la fin du cycle de mise en place de la boite 15 sous la pile 11. L'organe de support 10 de l'avant de la pile commence à se déplacer en direction de la flèche 25 et soutient donc la partie avant de la pile, autorisant de ce fait la descente, en direction de la flèche 26, de l'organe de relevage 6. L'arrière de la pile est encore soutenu par l'organe de support 13 de l'arrière de la boite 15 et, dès que celui-ci aura poursuivi sa course en direction de la flèche 22, l'organe de support 12 de l'arrière de la pile 11 viendra contre l'arrière de la feuille 15 soutenant ainsi l'arrière de la pile 11, ainsi que cela est représenté sur la figure 5 à l'aide de laquelle on montre l'arrivée d'une nouvelle feuille à empiler 27. Cette feuille 27, entrainée par les courroies 2 sera amenée dans la position de la feuille 15 de la figure 1 et un nouveau cycle pourra recommencer. Il est à remarquer qu'entre la phase décrite à l'aide de la figure 3 et la phase représentée en figure 4, le frottement des courroies 2 sur la boite 15 aura été supprimé et que seul l'organe de support 13 de l'arrière de la boite sera encore en contact avec ell i jusqu'à ce que l'organe de support 12 de l'arrière de la pile 11 soit opérationnel (voir figure 5). On notera que les organes de support 12 et 13 sont animés d'un mouvement de rotation continue commandé en synchronisme avec le mouvement linéaire de va-et-vient de l'organe de support 10 et le mouvement pendulaire de l'organe de relevage 6. Les mouvements de l'organe de support 10 et de l'organe de relevage 6, sont avantageusement obtenus à partir d'un dispositif à cames et leviers de conception bien connue en mécanique. Ce dispositif ne sera pas décrit en détail dans le présent exemple d'exécution de l'invention.FIG. 4 shows the position of the various elements at the end of the cycle for setting up the box 15 under the stack 11. The support member 10 at the front of the stack begins to move in the direction of the arrow 25 and therefore supports the front part of the stack, thereby authorizing the descent towards of the arrow 26, of the lifting member 6. The rear of the stack is still supported by the support member 13 from the rear of the box 15 and, as soon as the latter has continued its course in the direction arrow 22, the support member 12 of the back of the stack 11 will come against the back of the sheet 15 thus supporting the back of the stack 11, as shown in Figure 5 in using which the arrival of a new sheet to be stacked is shown. This sheet 27, driven by the belts 2, will be brought into the position of the sheet 15 of FIG. 1 and a new cycle may start again. It should be noted that between the phase described using FIG. 3 and the phase represented in FIG. 4, the friction of the belts 2 on the box 15 will have been eliminated and that only the support member 13 of the rear of the box will still be in contact with it until the support member 12 from the rear of the battery 11 is operational (see FIG. 5). It will be noted that the support members 12 and 13 are driven by a continuous rotation movement controlled in synchronism with the back-and-forth linear movement of the support member 10 and the pendulum movement of the lifting member 6 The movements of the support member 10 and of the lifting member 6 are advantageously obtained from a cam and lever device of a design well known in mechanics. This device will not be described in detail in the present exemplary embodiment of the invention.

La figure 6 est une vue de profil des organes de support de l'avant de la pile et des boites. L'organe de support de l'avant de la pile comprend un peigne 17 fixé à l'aide des vis 30 sur une traverse tubulaire 31 dont chacune des extrémités est attachée à un levier 32 muni de deux galets 33 guidés dans une coulisse 34.Figure 6 is a side view of the support members of the front of the stack and boxes. The support member at the front of the stack comprises a comb 17 fixed with the aid of the screws 30 to a tubular cross member 31, each of the ends of which is attached to a lever 32 provided with two rollers 33 guided in a slide 34.

Les galets 33 sont montés contre le levier 32 à l'aide des tourillons 35. Le mouvement de va-et-vient du peigne 17 dans le sens indiqué par la double flèche 36 est engendré par une came (non représentée). Cette came transmet un mouvement pendulaire, selon la flèche 37, à un levier oscillant 38 pivotant autour de l'arbre 39, cela à l'aide d'une tirette 40. L'une des extrémités du levier oscillant 38 est connectée par un axe 41 à la tirette 40, alors que l'autre extrémité est reliée au levier 32 par une coulisse 42 dans laquelle s'engage un galet 43 fixé sur ledit levier 32. Dans l'exemple représenté à la figure 6, l'organe de relevage 6 est constitué par un jeu de plusieurs leviers 45 placés côte à côte dans la largeur du dispositif d'empilage. Les leviers 45 ont une de leurs extrémités fixée sur l'arbre transversal 51 au moyen d'une clavette 52, alors que leur autre extrémité est munie de double galets 53 (voir figure 9). L'arbre transveral 51 est animé d'un mouvement oscillant permettant de faire passer les double galets 53 d'une position 6ʹ à une position 6‴. Le mouvement de l'arbre transveral 51 est produit à partir d'un dispositif à came et levier (non représenté). Ainsi que cela apparait sur la figure 9, les leviers 45 sont disposés de façon à ce que les double galets 53 soient alignés de manière à supporter les courroies 2 du transporteur inférieur 1. Les boites arrivant dans la zone d'empilage dans le sens indiqué par la flèche 53 et venant s'y empiler seront évacuées par paquets successifs du dessus de la pile à l'aide d'un convoyeur 54 composé de plusieurs courroies 55 placées côte à côte dans la largeur de la butée avant 18. Tout l'ensemble est agencé entre deux bâtis latéraux 56 et 57 supportant les dispositifs de commande à cames et leviers (non représentés). Les bâtis latéraux 56 et 57 reçoivent aussi contre chaque face intérieure les coulisses 34 nécessaires au guidage du peigne 17.The rollers 33 are mounted against the lever 32 using the pins 35. The back and forth movement of the comb 17 in the direction indicated by the double arrow 36 is generated by a cam (not shown). This cam transmits a pendular movement, according to arrow 37, to an oscillating lever 38 pivoting around the shaft 39, this using a pull bar 40. One end of the oscillating lever 38 is connected by an axis 41 to the pull tab 40, while the other end is connected to the lever 32 by a slide 42 in which engages a roller 43 fixed on said lever 32. In the example shown in FIG. 6, the lifting member 6 consists of a set of several levers 45 placed side by side across the width of the stacking device. The levers 45 have one of their ends fixed to the transverse shaft 51 by means of a key 52, while their other end is provided with double rollers 53 (see FIG. 9). The transverse shaft 51 is driven by an oscillating movement allowing the double rollers 53 to pass from a 6ʹ position to a 6 ‴ position. The movement of the transverse shaft 51 is produced from a cam and lever device (not shown). As shown in FIG. 9, the levers 45 are arranged so that the double rollers 53 are aligned so as to support the belts 2 of the lower conveyor 1. The boxes arriving in the stacking area in the direction indicated by the arrow 53 and coming to be stacked therein will be evacuated in successive packets from the top of the stack using a conveyor 54 composed of several belts 55 placed side by side in the width of the front stop 18. All of the the assembly is arranged between two lateral frames 56 and 57 supporting the control devices with cams and levers (not shown). The lateral frames 56 and 57 also receive against each interior face the slides 34 necessary for guiding the comb 17.

La figure 7 est une vue de profil de la pile et de l'organe de support 12 de l'arrière de la pile de boites 11 et de l'organe de support 13 de l'arrivée de la boite 15 à empiler. L'organe de support 12 est constitué par un manchon 58 monté sur un arbre transversal 59 animé d'un mouvement de rotation continu dans le sens de la flèche 21. Le manchon 58 comporte une encoche 24 fraisée sur toute sa longueur. Cette encoche 24 est destinée à ménager un passage pour le bord arrière de la boite 15, lorsque celle-ci viendra se placer sous la boite inférieure de la pile 11. Le manchon 58 est, de plus, usiné de façon à permettre le passage du dispositif d'équerrage 19 des boites empilées (voir figure 10). Le manchon 58 est fixé sur l'arbre transversal 59 à l'aide d'une clavette 65. Il est retenu latéralement sur cet arbre transversal à l'aide de bagues d'arrêt (non représentées).FIG. 7 is a side view of the stack and of the support member 12 from the rear of the stack of boxes 11 and of the support member 13 of the inlet of the box 15 to be stacked. The support member 12 consists of a sleeve 58 mounted on a transverse shaft 59 driven by a continuous rotational movement in the direction of the arrow 21. The sleeve 58 has a notch 24 milled over its entire length. This notch 24 is intended to provide a passage for the rear edge of the box 15, when the latter comes to be placed under the lower box of the stack 11. The sleeve 58 is, moreover, machined so as to allow the passage of the squaring device 19 for stacked boxes (see Figure 10). The sleeve 58 is fixed to the transverse shaft 59 using a key 65. It is retained laterally on this transverse shaft using stop rings (not shown).

La figure 8 est une vue en coupe partielle de l'organe de support de l'avant de la pile de boites. Pour simplifier le dessin de cette figure, on a représenté les double galets 53 en traits mixtes. Le peigne 17 est constitué par une pluralité de doi 66 fixés côte à côte, le long de la traverse tubulaire 31, à l'aide des vis 30. Les doigts 66 sont montés sur un renfort 67 soudé à la partie inférieure de la traverse tubulaire 31. Celle-ci est équipée à ses extrémités des leviers 32 auxquels elle est soudée. La butée avant 18 est agencée de manière à présenter des ouvertures 68 dans sa partie inférieure. Ces ouvertures autorisent le passage des doigts 66 à travers la butée avant 18.Figure 8 is a partial sectional view of the support member from the front of the stack of boxes. To simplify the drawing of this figure, the double rollers 53 have been shown in phantom. The comb 17 is constituted by a plurality of doi 66 fixed side by side, along the tubular cross member 31, using the screws 30. The fingers 66 are mounted on a reinforcement 67 welded to the lower part of the tubular cross member 31. The latter is fitted at its ends with levers 32 to which it is welded. The front stop 18 is arranged so as to have openings 68 in its lower part. These openings allow the passage of the fingers 66 through the front stop 18.

La figure 9 est une vue en plan selon B de la figure 8. Dans cette figure, on a choisi de représenter l'extrémité du peigne 17 se trouvant au voisinage du bâti latéral 56. L'extrémité se trouvant au voisinage de l'autre bâti latéral 57 (non représenté) aura la même configuration. Cette figure montre également la disposi tion des leviers 45 supportant les double galets 53 sur lesquels passent les courroies 2 du transporteur inférieur 1 (voir figure 6). Pour clarifier le dessin, la butée avant 18 a été représentée en traits mixtes.Figure 9 is a plan view along B of Figure 8. In this figure, we chose to represent the end of the comb 17 located in the vicinity of the side frame 56. The end being in the vicinity of the other lateral frame 57 (not shown) will have the same configuration. This figure also shows the arrangement tion of the levers 45 supporting the double rollers 53 over which the belts 2 of the lower conveyor 1 pass (see FIG. 6). To clarify the drawing, the front stop 18 has been shown in phantom.

La figure 10 est une vue selon A de la figure 7 représentant la partie médiane de l'organe de support 12 de l'arrière de la pile de boites 11 et de l'organe de support 13 de l'arrière de la boite 15 à empiler. Cette figure montre également la disposition latérale des poulies d'entrainement 5 et 64 des transporteurs 1 et 62 par rapport aux secteurs 61 de l'organe de suppot 13 de l'arrière de la boite 15 et au manchon 58 de l'organe d'appui 12 de l'arrière de la pile de boites 11. FIG. 10 is a view along A of FIG. 7 showing the middle part of the support member 12 from the rear of the stack of boxes 11 and of the support member 13 from the rear of the box 15 to stack. This figure also shows the lateral arrangement of the drive pulleys 5 and 64 of the conveyors 1 and 62 with respect to the sectors 61 of the support member 13 of the rear of the box 15 and to the sleeve 58 of the support member. support 12 from the back of the stack of boxes 11.

Claims (4)

1. Dispositif d'empilage d'objets plats, notamment de boites imprimées et pliées à plats, comprenant des transporteurs à courroies pour amener les boites sous une pile déjà formée dans une station d'empilage comportant au moins une butée avant et un dispositif d'équerrage des boites, des moyens pour soutenir l'avant et l'arrière de la pile de boites déjà formée et des moyens pour soutenir l'avant et l'arrière d'une nouvelle boite à empiler, caractérisé en ce que les moyens pour soutenir l'avant de la pile de boites déjà formée sont constitués par un peigne (17) formé de doigts (66) montés à la partie inférieure d'une traverse tubulaire (31) dont chaque extrémité est équipée d'un levier (32) muni de galets (33) guidés dans une coulisse (34) fixée contre la paroi intérieure de deux bâtis latéraux (56 et 57), chacun desdits leviers étant relié à un levier de commande (38) communicant un mouvement horizontal de va-et-vient audit peigne (17), en ce que les moyens pour soutenir l'arrière de la pile de boites (11) déjà formée sont constitués par un manchon (58) monté sur un arbre transversal (59) animé d'un mouvement de rotation continu, ledit manchon (58) présentant en alternance sur sa longueur des portées de diamètres différents, ainsi qu'une encoche longitudinale (24), en ce que les moyens pour soutenir l'avant d'une nouvelle boite (15) à empiler sont constitués par un organe de relevage (6) agissant contre la face inférieure des courroies (2) d'un transporteur (1) d'amenée des boites (15) dans la station d'empilage, ledit organe de relevage (6) étant agencé pour soulever séquentiellement les courroies (2) entrainant la boite (15), en ce que les moyens pour soutenir l'arrière de la nouvelle boite (15) sont constitués par un organe comportant une pluralité de secteurs (61) montés sur un arbre transversal (60) animé d'un mouvement de rotation continu et en ce que le peigne (17), l'organe de relevage (6), le manchon (58) et les secteurs (61) sont entrainés en synchronisme les uns par rapport aux autres.1. Device for stacking flat objects, in particular printed boxes folded flat, comprising belt conveyors for bringing the boxes under a stack already formed in a stacking station comprising at least one front stop and a device for squaring of the boxes, means for supporting the front and rear of the stack of boxes already formed and means for supporting the front and the back of a new stacking box, characterized in that the means for support the front of the stack of boxes already formed consist of a comb (17) formed of fingers (66) mounted at the bottom of a tubular crosspiece (31) each end of which is equipped with a lever (32) provided with rollers (33) guided in a slide (34) fixed against the inner wall of two lateral frames (56 and 57), each of said levers being connected to a control lever (38) communicating a horizontal back-and-forth movement comes from said comb (17), in that the means for supporting the rear of the stack of boxes (11) already formed consist of a sleeve (58) mounted on a transverse shaft (59) driven by a continuous rotational movement, said sleeve (58) having alternately along its length spans of different diameters , as well as a longitudinal notch (24), in that the means for supporting the front of a new box (15) to be stacked consist of a lifting member (6) acting against the underside of the belts (2 ) of a conveyor (1) for bringing the boxes (15) into the stacking station, said lifting member (6) being arranged to sequentially lift the belts (2) driving the box (15), in that the means for supporting the rear of the new box (15) are constituted by a member comprising a plurality of sectors (61) mounted on a transverse shaft (60) driven by a continuous rotational movement and in that the comb (17), the lifting member (6), the sleeve (58) and the sectors (61) are driven in synchronism with each other. 2. Dispositif selon la revendication 1, caractérisé en ce que l'organe de relevage (6) est constitué par des leviers (45) montés sur un arbre transversal (51) animé d'un mouvement oscillant, lesdits leviers étant équipés à une des extrémités de double galets (53) touchant la face inférieure des courroies (2) du transporteur (1).2. Device according to claim 1, characterized in that the lifting member (6) consists of levers (45) mounted on a transverse shaft (51) driven by an oscillating movement, said levers being equipped with one of ends of double rollers (53) touching the underside of the belts (2) of the conveyor (1). 3. Dispositif selon la revendication 2, caractérisé en ce que lesdits leviers (45) sont placés côte à côte entre les doig ts (66) du peigne (17).3. Device according to claim 2, characterized in that said levers (45) are placed side by side between the fingers ts (66) of the comb (17). 4. Dispositif selon la revendication 1, caractérisé en ce que les secteurs (61) des moyens pour soutenir l'arrière de la nouvelle boite (15) sont disposés côte à côte entre les courroies (2) du transporteur (1) d'amenée des boites (15) dans la station d'empilage.4. Device according to claim 1, characterized in that the sectors (61) of the means for supporting the rear of the new box (15) are arranged side by side between the belts (2) of the conveyor (1) boxes (15) in the stacking station.
EP87114757A 1986-10-24 1987-10-09 Device for piling flat objects Expired - Lifetime EP0267431B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615023 1986-10-24
FR8615023A FR2605613B1 (en) 1986-10-24 1986-10-24 DEVICE FOR STACKING FLAT OBJECTS

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EP0267431A1 true EP0267431A1 (en) 1988-05-18
EP0267431B1 EP0267431B1 (en) 1990-01-31

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FR (1) FR2605613B1 (en)

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DE3761554D1 (en) 1990-03-08
JPS63202555A (en) 1988-08-22
CA1296366C (en) 1992-02-25
FR2605613B1 (en) 1989-05-12
US4808054A (en) 1989-02-28
FR2605613A1 (en) 1988-04-29
EP0267431B1 (en) 1990-01-31

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