WO2001098187A1 - U-shaped accumulator device for regulating the transfer of products between an upstream apparatus and a downstream apparatus - Google Patents

U-shaped accumulator device for regulating the transfer of products between an upstream apparatus and a downstream apparatus Download PDF

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Publication number
WO2001098187A1
WO2001098187A1 PCT/FR2001/001986 FR0101986W WO0198187A1 WO 2001098187 A1 WO2001098187 A1 WO 2001098187A1 FR 0101986 W FR0101986 W FR 0101986W WO 0198187 A1 WO0198187 A1 WO 0198187A1
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WO
WIPO (PCT)
Prior art keywords
accumulator device
chain
pinion
around
transport plane
Prior art date
Application number
PCT/FR2001/001986
Other languages
French (fr)
Inventor
Bernard Abert
Philippe Carabin
Original Assignee
Sogem Agro
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sogem Agro filed Critical Sogem Agro
Priority to AU2001269246A priority Critical patent/AU2001269246A1/en
Publication of WO2001098187A1 publication Critical patent/WO2001098187A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/34—Devices for discharging articles or materials from conveyor 
    • B65G47/46—Devices for discharging articles or materials from conveyor  and distributing, e.g. automatically, to desired points
    • B65G47/51—Devices for discharging articles or materials from conveyor  and distributing, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination
    • B65G47/5104—Devices for discharging articles or materials from conveyor  and distributing, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination for articles
    • B65G47/5109—Devices for discharging articles or materials from conveyor  and distributing, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination for articles first In - First Out systems: FIFO
    • B65G47/5113—Devices for discharging articles or materials from conveyor  and distributing, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination for articles first In - First Out systems: FIFO using endless conveyors
    • B65G47/5118—Devices for discharging articles or materials from conveyor  and distributing, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination for articles first In - First Out systems: FIFO using endless conveyors with variable accumulation capacity
    • B65G47/5122—Devices for discharging articles or materials from conveyor  and distributing, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination for articles first In - First Out systems: FIFO using endless conveyors with variable accumulation capacity by displacement of the conveyor-guiding means, e.g. of the loose pulley-type

Definitions

  • U-shaped accumulator device for regulating the transfer of products between an upstream device and a downstream device
  • the present invention relates to a U-shaped accumulator device allowing the continuous regulation of the transfer of products between an upstream device and a downstream device.
  • particular transfer devices are used, adapted to be able to absorb the jolts of flow of the upstream machine or machines, and able to store at least temporarily products when the downstream device is not functioning properly.
  • the document FR-A-2 524 436 describes a device for regulating the transfer of this genr ⁇ j consisting of two linear endless belt conveyors arranged parallel to each other and put in communication by a system of connection in the form of a circular plate or semi-circular conveyor, carried by a carriage movable in translation parallel to said linear conveyors.
  • This system defines a U-shaped transfer plan for the products; the translational movement of the circular plate or the semi-circular conveyor above the linear conveyors is managed to increase or decrease the length of the product transport plane, depending on storage needs or emptying possibilities.
  • the present invention provides a new accumulator device structure of simplified design and use.
  • the accumulator device according to the present invention is of the type comprising a U-shaped transport plane whose length is variable between its fixed input and output ends.
  • This accumulator device is characterized by the fact that it consists of a continuous motorized chain of the type which is in the form of an assembly of load-bearing elements, shaped into two superposed U's, one defining an upper strand corresponding to the product transport plane, and the other defining a lower strand, this conformation in two U being obtained: - by winding the continuous chain around a first pinion of fixed horizontal axis at the entry end and around a second pinion with a fixed horizontal axis at the outlet end,
  • This accumulator device further comprising means which make it possible to move the two mobile structures in opposite directions to one another, in order to adapt the length of the transport plane according to the accumulation needs.
  • the mobile structures on which the upper and lower strands of the continuous chain are wound up each consist of a guide disc on the periphery of which said chain comes to bear.
  • These discs are rotatably mounted around a vertical axis on a carriage guided in translation along the frame of the installation.
  • the guide discs of the continuous chain are mounted idly in rotation on their support carriage.
  • the two mobile structures which guide the continuous chain are connected by a cable or chain system passing through at least one return pulley so as to subject their movement in translation in opposite directions.
  • the drive of the continuous chain is ensured by at least one of the pinions of the inlet end or the outlet end of the accumulator device.
  • the two pinions of the inlet end and the outlet end are motorized.
  • computer means (computer or programmable logic controller) manage the operation of the motorization of the pinion of the input end, as well as of the motorization of the pinion of the output end, to fix or modify the length of the product transport plan according to the accumulation needs, and this from information received from product detection cells, or from the detection of speeds of upstream and / or downstream devices.
  • FIG. 1 is a schematic perspective representation of a possible embodiment of the accumulator device according to the present invention.
  • FIG. 2 is a slightly more detailed side view of the accumulator device illustrated in Figure 1;
  • FIG. 3 shows the accumulator device of Figure 2 seen from above;
  • FIG. 4 is a front view of one of the links of the pallet transport chain which is used in the accumulator device according to the present invention
  • - Figure 5 is a side view of the chain link illustrated in Figure 4;
  • - Figure 6 is a top view of the chain link of Figures 4 and 5;
  • - Figure 7 is a side view showing an association of three links as illustrated in Figures 4 to 6;
  • FIG. 9 is an enlarged partial view, in cross section, which shows the principle of guiding the pallet chain on the movable support carriages;
  • FIG. 10 is an enlarged partial view in cross section, which shows the guide of the pallet chain on the straight sections of the installation.
  • the accumulator device 1 illustrated in FIGS. 1 to 3 is intended to be positioned between an upstream device, for example a baking oven, which supplies the products via an input conveyor 2, and a downstream device , for example a packaging installation, supplied by an outlet conveyor 3.
  • an upstream device for example a baking oven
  • a downstream device for example a packaging installation
  • This accumulator device 1 consists of a continuous chain 4 of the type which is in the form of an assembly of load-bearing elements (such as a pallet, scale or modular belt chain) formed into two superimposed U's, one forming a upper strand 5 horizontal or substantially horizontal corresponding to the product transport plane, and the other forming a lower strand 6 which also extends in a horizontal or substantially horizontal plane.
  • the inlet 2 and outlet 3 conveyors can be of the endless belt type; they are arranged parallel to each other and they are connected by the transport plane 5 of the accumulator device 1, the length of which can increase or decrease as required, in a detail below.
  • the continuous chain 4 is here a chain of the pallet or flake type, known in itself, consisting of an assembly of individual carrying elements 8 shown in isolation in FIGS. 4 to 6.
  • the individual elements 8 constitute the various links of the chain 4. They comprise a central body 9 provided with a cylindrical orifice 10 and an obiong orifice 11 for their assembly by means of connecting pins.
  • the central body 9 is surmounted by a monobloc pallet 12 and it partly comprises lower side fins 14 which extend parallel to said pallet 12.
  • FIGS. 7 and 8 The assembly of the links 8 between them is illustrated in FIGS. 7 and 8.
  • the juxtaposition of the different pallets 12 constitutes a continuous support plane.
  • the chain 4 can be wound on itself, in a conventional manner, in a plane perpendicular to the plane of the pallets 12.
  • the different pallets 12 have a certain degree of mobility between them, due to their conformation and due to the presence of the oblong orifices 11, which also allows a curved circuit of the chain in the support plane of the pallets 12, as illustrated in FIG. 8.
  • the pallet chain 4 is guided around a first pinion 16 of fixed horizontal axis disposed at the entry end A of the accumulator device, that is to say - say just behind the downstream end of the inlet conveyor 2, and around a second pinion 17 of fixed horizontal axis, disposed at the outlet end B of the accumulator device, that is to say just in front of the upstream end of the outlet conveyor 3.
  • its upper strand 5 is guided 180 ° in its horizontal plane, around a support structure 20, and its lower strand
  • the two pinions 16 and 17 are each associated with a motorization, respectively 22 and 23 which ensure the drive of the continuous chain 4 in the direction of the orientation arrows 24.
  • the two support structures 20 and 21 are movable in translation one above the other according to the orientation arrows 25 and 26, parallel to the parallel portions of the two superimposed U 5 and 6, and in opposite direction one the other.
  • These two support structures 20 and 21 each consist of a disc, respectively 28 and 29, on the periphery of which the pallet chain 4 is supported, and which is mounted idly around a vertical axis on a support carriage, respectively 30 and 31, guided in translation on the frame of the installation.
  • This frame has not been shown in Figures 1 to 3 to simplify the representation.
  • the two movable carriages 30 and 31 are connected by a cable or chain 32 which passes through a return pulley 33 secured to the frame of the installation, to reverse the direction of their translational movement.
  • FIG. 9 The guidance of the movable carriages 30 and 31 on the frame of the installation is illustrated in FIG. 9.
  • the upper carriage 30 (partially shown) whose lateral ends are equipped with rollers 34 which guide it the along a beam 35 forming an integral part of the frame 36 of the installation.
  • the rotary disc 28 on the periphery of which come to bear the various links 8 of the pallet transport chain; the disc 28 is in fact positioned between the pallet 12 of the links 8 and one of the lateral fins 14 to ensure correct guiding of the chain.
  • the lower carriage 31 is partially shown guided by rollers 37 along a beam 38 of the frame of the installation, and its idler disc 29 serving to guide the transport chain 4 at 180 °. the same way as the upper disc 28.
  • the guiding of the transport chain 4 along the rectilinear parts of the accumulator appears in FIG. 9, but is illustrated as a function in FIG. 10.
  • the corresponding guiding of the upper strand 5 of the chain 4 is carried out by means of pads. 40 regularly distributed along the frame 36, on which the underside of the pallets 12 bears.
  • the lower strand 6 of the chain is guided by pads 42, also integral with the frame 36 and on which comes to take support the top of the pallets 12.
  • the operation of the accumulator device is managed by computer means 45 (industrial computer or programmable automaton) which control the motorizations 22 and 23 according to the accumulation needs.
  • the drive speed of the input pinion 16 is greater than the drive speed of the output pinion 17.
  • the upper movable carriage 20 then moves towards the rear and the length of the transport plane 5 increases.
  • the lower carriage 21 moves forward to provide the chain length necessary to increase the length of the transport plane.
  • the computer means 45 control the motorizations 22 and 23 so that the speed of the input pinion 16 is less than the speed of the output pinion 17.
  • the the upper mobile carriage then moves forward and the length of the transport plane 5 decreases; the lower mobile carriage 21 simultaneously moves rearward to "store" the chain length 4 linked to the reduction in length of the transport plane.
  • Appropriate stops or contactors are advantageously provided to define the extreme front and rear positions of the upper carriage 20 and / or of the lower carriage 21.
  • the modification of the length of the transport plane 5 can be managed by acting directly on the mobile carriages 20 and / or 21, for example from a cable or a motorized chain 32. In this case, we can consider motorizing only one of the pinions 16 or 17 to ensure the drive of the continuous chain 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Conveyors (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Attitude Control For Articles On Conveyors (AREA)

Abstract

The invention concerns a U-shaped accumulator device comprising a transport plane (5) for products whereof the length is variable between fixed intake (A) and outlet (B) ends. The invention is characterised in that said accumulator device consists of a continuous powered chain (4) in the form of an assembly of transporting elements (8) (pallet chain, modular belt) configured in two superimposed U-shapes, one (5) defining an upper side corresponding to the product transporting plane, and the other (6) defining a lower side. Said configuration in two U-shapes is obtained by winding the chain (4) around a first pinion (16) with fixed horizontal axis at the intake end (A), and around a second pinion (17) with fixed horizontal axis at the outlet end (B), by guiding at 180° its upper side (5) around a support structure (20) mobile in translation parallel to the two parallel portions of the upper side (5); and by guiding at 180° its lower side (6) around a support structure (21) mobile in translation parallel to the two parallel portions of said lower side (6). Said accumulator device further comprises means for moving the two mobile structures (20 and 21) in mutually opposite directions, to adapt the length of the transport plane (5) according to the accumulation requirements.

Description

DISPOSITIF ACCUMULATEUR EN U POUR REGULER LE TRANSFERT DE PRODUITS ENTRE UN APPAREIL AMONT ET UN APPAREIL AVAL U-shaped accumulator device for regulating the transfer of products between an upstream device and a downstream device
La présente invention concerne un dispositif accumulateur en forme de U permettant la régulation en continu du transfert de produits entre un appareil amont et un appareil aval.The present invention relates to a U-shaped accumulator device allowing the continuous regulation of the transfer of products between an upstream device and a downstream device.
Dans les usines de fabrication de biscuits, tablettes de chocolat, pièces mécaniques ou autres ... les différentes unités de la chaîne de fabrication sont généralement raccordées les unes aux autres par des systèmes de transfert, bien souvent des convoyeurs du type à bandes sans fin.In factories manufacturing biscuits, chocolate bars, mechanical parts or other ... the various units of the production chain are generally connected to each other by transfer systems, very often conveyors of the endless belt type .
Dans certains cas, et en particulier lorsque l'appareil récepteur aval nécessite une alimentation régulière, des dispositifs de transfert particuliers sont utilisés, adaptés pour pouvoir absorber les à-coups de débit de la ou des machines amont, et aptes à stocker au moins temporairement les produits lorsque l'appareil aval ne fonctionne pas correctement.In certain cases, and in particular when the downstream receiving device requires a regular supply, particular transfer devices are used, adapted to be able to absorb the jolts of flow of the upstream machine or machines, and able to store at least temporarily products when the downstream device is not functioning properly.
A titre d'exemple, le document FR-A-2 524 436 décrit un dispositif régulateur de transfert de ce genrβj constitué de deux convoyeurs linéaires à bande sans fin disposés parallèlement l'un à l'autre et mis en communication par un système de raccordement en forme de plateau circulaire ou de convoyeur demi-circulaire, porté par un chariot mobile en translation parallèlement auxdits convoyeurs linéaires.By way of example, the document FR-A-2 524 436 describes a device for regulating the transfer of this genrβj consisting of two linear endless belt conveyors arranged parallel to each other and put in communication by a system of connection in the form of a circular plate or semi-circular conveyor, carried by a carriage movable in translation parallel to said linear conveyors.
Ce dispositif définit un plan de transfert en U pour les produits ; le mouvement de translation du plateau circulaire ou du convoyeur demi-circulaire au-dessus des convoyeurs linéaires est géré pour augmenter ou diminuer la longueur du plan de transport des produits, en fonction des besoins de stockage ou des possibilités de vidange.This system defines a U-shaped transfer plan for the products; the translational movement of the circular plate or the semi-circular conveyor above the linear conveyors is managed to increase or decrease the length of the product transport plane, depending on storage needs or emptying possibilities.
Les installations d'accumulation de ce genre ont une structure généralement complexe. Leur coût de revient est en conséquence assez élevé et elles ne sont pas très simples à mettre en œuvre, à entretenir ou à dépanner.Accumulation systems of this kind have a generally complex structure. Their cost is therefore quite high and they are not very simple to implement, maintain or troubleshoot.
La présente invention propose une nouvelle structure de dispositif accumulateur de conception et d'utilisation simplifiées. Le dispositif accumulateur conforme à la présente invention est du type comprenant un plan de transport en U dont la longueur est variable entre ses extrémités fixes d'entrée et de sortie.The present invention provides a new accumulator device structure of simplified design and use. The accumulator device according to the present invention is of the type comprising a U-shaped transport plane whose length is variable between its fixed input and output ends.
Ce dispositif accumulateur est caractérisé par le fait qu'il est constitué d'une chaîne motorisée continue du type se présentant sous la forme d'un assemblage d'éléments porteurs, conformée en deux U superposés, l'un définissant un brin supérieur correspondant au plan de transport des produits, et l'autre définissant un brin inférieur, cette conformation en deux U étant obtenue : - par enroulement de la chaîne continue autour d'un premier pignon d'axe horizontal fixe au niveau de l'extrémité d'entrée et autour d'un second pignon d'axe horizontal fixe au niveau de l'extrémité de sortie,This accumulator device is characterized by the fact that it consists of a continuous motorized chain of the type which is in the form of an assembly of load-bearing elements, shaped into two superposed U's, one defining an upper strand corresponding to the product transport plane, and the other defining a lower strand, this conformation in two U being obtained: - by winding the continuous chain around a first pinion of fixed horizontal axis at the entry end and around a second pinion with a fixed horizontal axis at the outlet end,
- par guidage à 180° de son brin supérieur autour d'une structure support mobile en translation parallèlement aux deux portions parallèles dudit brin supérieur, et- by 180 ° guidance of its upper strand around a support structure movable in translation parallel to the two parallel portions of said upper strand, and
- par guidage à 180° de son brin inférieur autour d'une structure support qui est mobile en translation parallèlement aux deux portions parallèles dudit brin supérieur.- By 180 ° guidance of its lower strand around a support structure which is movable in translation parallel to the two parallel portions of said upper strand.
Ce dispositif accumulateur comportant en outre des moyens qui permettent de déplacer les deux structures mobiles en sens inverse l'une de l'autre, pour adapter la longueur du plan de transport en fonction des besoins d'accumulation.This accumulator device further comprising means which make it possible to move the two mobile structures in opposite directions to one another, in order to adapt the length of the transport plane according to the accumulation needs.
La structure générale d'un tel dispositif accumulateur est très simple et l'augmentation ou la diminution du plan de transport des produits peut être géré très facilement par les moyens d'entraînement de la chaîne continue et/ou par une action directe sur les structures supports mobiles en translation.The general structure of such an accumulator device is very simple and the increase or decrease in the product transport plan can be managed very easily by the drive means of the continuous chain and / or by direct action on the structures. mobile supports in translation.
Selon une caractéristique préférentielle, les structures mobiles sur lesquelles s'enroulent les brins supérieur et inférieur de la chaîne continue sont constituées chacune d'un disque de guidage sur la périphérie duquel vient s'appuyer ladite chaîne. Ces disques sont montés rotatifs autour d'un axe vertical sur un chariot guidé en translation le long du bâti de l'installation. De préférence, les disques de guidage de la chaîne continue sont montés fous en rotation sur leur chariot support.According to a preferred characteristic, the mobile structures on which the upper and lower strands of the continuous chain are wound up each consist of a guide disc on the periphery of which said chain comes to bear. These discs are rotatably mounted around a vertical axis on a carriage guided in translation along the frame of the installation. Of preferably, the guide discs of the continuous chain are mounted idly in rotation on their support carriage.
Selon une autre particularité, les deux structures mobiles qui guident la chaîne continue sont reliées par un système de câble ou de chaîne passant par au moins une poulie de renvoi de manière à assujettir leur mouvement en translation de sens inverse.According to another particularity, the two mobile structures which guide the continuous chain are connected by a cable or chain system passing through at least one return pulley so as to subject their movement in translation in opposite directions.
L'entraînement de la chaîne continue est assuré par l'un au moins des pignons de l'extrémité d'entrée ou de l'extrémité de sortie du dispositif accumulateur. Selon une disposition particulièrement intéressante, les deux pignons de l'extrémité d'entrée et de l'extrémité de sortie sont motorisés.The drive of the continuous chain is ensured by at least one of the pinions of the inlet end or the outlet end of the accumulator device. According to a particularly advantageous arrangement, the two pinions of the inlet end and the outlet end are motorized.
Dans ce cas, des moyens informatiques (ordinateur ou automate programmable) gèrent le fonctionnement de la motorisation du pignon de l'extrémité d'entrée, ainsi que de la motorisation du pignon de l'extrémité de sortie, pour fixer ou modifier la longueur du plan de transport des produits en fonction des besoins d'accumulation, et ceci à partir des informations reçues de cellules de détection des produits, ou à partir de la détection des vitesses des appareils amont et/ou aval.In this case, computer means (computer or programmable logic controller) manage the operation of the motorization of the pinion of the input end, as well as of the motorization of the pinion of the output end, to fix or modify the length of the product transport plan according to the accumulation needs, and this from information received from product detection cells, or from the detection of speeds of upstream and / or downstream devices.
Mais l'invention sera encore illustrée, sans être aucunement limitée, par la description suivante d'un mode de réalisation particulier, donné uniquement à titre d'exemple et représenté sur les dessins annexés dans lesquels :However, the invention will be further illustrated, without being in any way limited, by the following description of a particular embodiment, given solely by way of example and shown in the appended drawings in which:
- la figure 1 est une représentation schématique en perspective d'un mode de réalisation possible du dispositif accumulateur selon la présente invention ;- Figure 1 is a schematic perspective representation of a possible embodiment of the accumulator device according to the present invention;
- la figure 2 est une vue de côté un peu plus détaillée du dispositif accumulateur illustré sur la figure 1 ;- Figure 2 is a slightly more detailed side view of the accumulator device illustrated in Figure 1;
- la figure 3 montre le dispositif accumulateur de la figure 2 vu par dessus ;- Figure 3 shows the accumulator device of Figure 2 seen from above;
- la figure 4 est une vue de face de l'un des maillons de la chaîne de transport à palettes qui est utilisée dans le dispositif accumulateur conforme à la présente invention ; - la figure 5 est une vue de côté du maillon de chaîne illustré sur la figure 4 ;- Figure 4 is a front view of one of the links of the pallet transport chain which is used in the accumulator device according to the present invention; - Figure 5 is a side view of the chain link illustrated in Figure 4;
- la figure 6 est une vue de dessus du maillon de chaîne des figures 4 et 5 ; - la figure 7 est une vue de côté montrant une association de trois maillons tels qu'illustrés sur les figures 4 à 6 ;- Figure 6 is a top view of the chain link of Figures 4 and 5; - Figure 7 is a side view showing an association of three links as illustrated in Figures 4 to 6;
- la figure 8 montre la même association de trois maillons vue par dessous ;- Figure 8 shows the same association of three links seen from below;
- la figure 9 est une vue partielle agrandie, en coupe transversale, qui montre le principe de guidage de la chaîne à palettes sur les chariots supports mobiles ;- Figure 9 is an enlarged partial view, in cross section, which shows the principle of guiding the pallet chain on the movable support carriages;
- la figure 10 est une vue partielle agrandie en coupe transversale, qui montre le guidage de la chaîne à palettes sur les tronçons rectilignes de l'installation.- Figure 10 is an enlarged partial view in cross section, which shows the guide of the pallet chain on the straight sections of the installation.
Le dispositif accumulateur 1 illustré sur les figures 1 à 3 est destiné à venir se positionner entre un appareil amont, par exemple un four de cuisson, qui fournit les produits par l'intermédiaire d'un transporteur d'entrée 2, et un appareil aval, par exemple une installation de conditionnement, approvisionnée par un transporteur de sortie 3.The accumulator device 1 illustrated in FIGS. 1 to 3 is intended to be positioned between an upstream device, for example a baking oven, which supplies the products via an input conveyor 2, and a downstream device , for example a packaging installation, supplied by an outlet conveyor 3.
Ce dispositif accumulateur 1 est constitué d'une chaîne continue 4 du type se présentant sous la forme d'un assemblage d'éléments porteurs (genre chaîne à palettes, à écailles ou tapis modulaire) conformée en deux U superposés, l'un formant un brin supérieur 5 horizontal ou sensiblement horizontal correspondant au plan de transport des produits, et l'autre formant un brin inférieur 6 qui s'étend également dans un plan horizontal ou sensiblement horizontal. Les transporteurs d'entrée 2 et de sortie 3 peuvent être du type à bande sans fin ; ils sont disposés parallèlement l'un à l'autre et ils sont reliés par le plan de transport 5 du dispositif accumulateur 1 dont la longueur peut augmenter ou diminuer en fonction des besoins, d'une manière détaillée plus loin. La chaîne continue 4 est ici une chaîne du type à palettes ou à écailles, connue en elle-même, constituée d'un assemblage d'éléments porteurs individuels 8 représentés isolément sur les figures 4 à 6.This accumulator device 1 consists of a continuous chain 4 of the type which is in the form of an assembly of load-bearing elements (such as a pallet, scale or modular belt chain) formed into two superimposed U's, one forming a upper strand 5 horizontal or substantially horizontal corresponding to the product transport plane, and the other forming a lower strand 6 which also extends in a horizontal or substantially horizontal plane. The inlet 2 and outlet 3 conveyors can be of the endless belt type; they are arranged parallel to each other and they are connected by the transport plane 5 of the accumulator device 1, the length of which can increase or decrease as required, in a detail below. The continuous chain 4 is here a chain of the pallet or flake type, known in itself, consisting of an assembly of individual carrying elements 8 shown in isolation in FIGS. 4 to 6.
Les éléments individuels 8 constituent les différents maillons de la chaîne 4. Ils comprennent un corps central 9 muni d'un orifice cylindrique 10 et d'un orifice obiong 11 pour leur assemblage au moyen d'axes de liaison. Le corps central 9 est surmonté d'une palette monobloc 12 et il comporte en partie inférieure des ailettes latérales 14 qui s'étendent parallèlement à ladite palette 12.The individual elements 8 constitute the various links of the chain 4. They comprise a central body 9 provided with a cylindrical orifice 10 and an obiong orifice 11 for their assembly by means of connecting pins. The central body 9 is surmounted by a monobloc pallet 12 and it partly comprises lower side fins 14 which extend parallel to said pallet 12.
L'assemblage des maillons 8 entre eux est illustré sur les figures 7 et 8. La juxtaposition des différentes palettes 12 constitue un plan support continu. La chaîne 4 peut s'enrouler sur elle-même, de manière classique, dans un plan perpendiculaire au plan des palettes 12. En outre, les différentes palettes 12 disposent entre elles d'un certain degré de mobilité, du fait de leur conformation et du fait de la présence des orifices oblongs 11, qui autorise aussi un circuit courbe de la chaîne dans le plan support des palettes 12, tel qu'illustré sur la figure 8.The assembly of the links 8 between them is illustrated in FIGS. 7 and 8. The juxtaposition of the different pallets 12 constitutes a continuous support plane. The chain 4 can be wound on itself, in a conventional manner, in a plane perpendicular to the plane of the pallets 12. In addition, the different pallets 12 have a certain degree of mobility between them, due to their conformation and due to the presence of the oblong orifices 11, which also allows a curved circuit of the chain in the support plane of the pallets 12, as illustrated in FIG. 8.
Pour former le plan de transport 5 à longueur variable, la chaîne à palettes 4 est guidée autour d'un premier pignon 16 d'axe horizontal fixe disposé au niveau de l'extrémité d'entrée A du dispositif accumulateur, c'est-à- dire juste derrière l'extrémité aval du transporteur d'entrée 2, et autour d'un second pignon 17 d'axe horizontal fixe, disposé au niveau de l'extrémité de sortie B du dispositif accumulateur, c'est-à-dire juste devant l'extrémité amont du transporteur de sortie 3. En outre, son brin supérieur 5 est guidé à 180° dans son plan horizontal, autour d'une structure support 20, et son brin inférieurTo form the variable length transport plane 5, the pallet chain 4 is guided around a first pinion 16 of fixed horizontal axis disposed at the entry end A of the accumulator device, that is to say - say just behind the downstream end of the inlet conveyor 2, and around a second pinion 17 of fixed horizontal axis, disposed at the outlet end B of the accumulator device, that is to say just in front of the upstream end of the outlet conveyor 3. In addition, its upper strand 5 is guided 180 ° in its horizontal plane, around a support structure 20, and its lower strand
6 est également guidé à 180° dans son plan horizontal autour de sa propre structure support 21.6 is also guided 180 ° in its horizontal plane around its own support structure 21.
Les deux pignons 16 et 17 sont associés chacun à une motorisation, respectivement 22 et 23 qui assurent l'entraînement de la chaîne continue 4 dans le sens des flèches d'orientation 24.The two pinions 16 and 17 are each associated with a motorization, respectively 22 and 23 which ensure the drive of the continuous chain 4 in the direction of the orientation arrows 24.
Les deux structures supports 20 et 21 sont mobiles en translation l'une au-dessus de l'autre selon les flèches d'orientation 25 et 26, parallèlement aux portions parallèles des deux U superposés 5 et 6, et en sens inverse l'une de l'autre.The two support structures 20 and 21 are movable in translation one above the other according to the orientation arrows 25 and 26, parallel to the parallel portions of the two superimposed U 5 and 6, and in opposite direction one the other.
Ces deux structures supports 20 et 21 sont chacune constituées d'un disque, respectivement 28 et 29, sur la périphérie duquel vient s'appuyer la chaîne à palettes 4, et qui est monté fou autour d'un axe vertical sur un chariot support, respectivement 30 et 31, guidé en translation sur le bâti de l'installation. Ce bâti n'a pas été représenté sur les figures 1 à 3 pour simplifier la représentation. Les deux chariots mobiles 30 et 31 sont reliés par un câble ou une chaîne 32 qui passe par une poulie de renvoi 33 solidaire du bâti de l'installation, pour inverser le sens de leur mouvement de translation.These two support structures 20 and 21 each consist of a disc, respectively 28 and 29, on the periphery of which the pallet chain 4 is supported, and which is mounted idly around a vertical axis on a support carriage, respectively 30 and 31, guided in translation on the frame of the installation. This frame has not been shown in Figures 1 to 3 to simplify the representation. The two movable carriages 30 and 31 are connected by a cable or chain 32 which passes through a return pulley 33 secured to the frame of the installation, to reverse the direction of their translational movement.
Le guidage des chariots mobiles 30 et 31 sur le bâti de l'installation est illustré sur la figure 9. Sur cette figure, on remarque le chariot supérieur 30 (représenté partiellement) dont les extrémités latérales sont équipées de galets 34 qui assurent son guidage le long d'une poutre 35 faisant partie intégrante du bâti 36 de l'installation. On remarque aussi le disque rotatif 28 sur la périphérie duquel viennent prendre appui les différents maillons 8 de la chaîne de transport à palettes ; le disque 28 vient en fait se positionner entre la palette 12 des maillons 8 et l'une des ailettes latérales 14 pour assurer un guidage correct de la chaîne.The guidance of the movable carriages 30 and 31 on the frame of the installation is illustrated in FIG. 9. In this figure, we notice the upper carriage 30 (partially shown) whose lateral ends are equipped with rollers 34 which guide it the along a beam 35 forming an integral part of the frame 36 of the installation. Note also the rotary disc 28 on the periphery of which come to bear the various links 8 of the pallet transport chain; the disc 28 is in fact positioned between the pallet 12 of the links 8 and one of the lateral fins 14 to ensure correct guiding of the chain.
Sur cette même figure 9, on a représenté partiellement le chariot inférieur 31 guidé par des galets 37 le long d'une poutre 38 du bâti de l'installation, et son disque fou 29 servant à guider à 180° la chaîne de transport 4 de la même manière que le disque supérieur 28.In the same FIG. 9, the lower carriage 31 is partially shown guided by rollers 37 along a beam 38 of the frame of the installation, and its idler disc 29 serving to guide the transport chain 4 at 180 °. the same way as the upper disc 28.
Le guidage de la chaîne de transport 4 le long des parties rectilignes de l'accumulateur apparaît sur la figure 9, mais est illustré en fonction sur la figure 10. Le guidage correspondant du brin supérieur 5 de la chaîne 4 est réalisé au moyen de patins 40 régulièrement répartis le long du bâti 36, sur lesquels vient prendre appui le dessous des palettes 12. D'une manière équivalente, le brin inférieur 6 de la chaîne est guidé par des patins 42, également solidaires du bâti 36 et sur lesquels vient prendre appui le dessus des palettes 12.The guiding of the transport chain 4 along the rectilinear parts of the accumulator appears in FIG. 9, but is illustrated as a function in FIG. 10. The corresponding guiding of the upper strand 5 of the chain 4 is carried out by means of pads. 40 regularly distributed along the frame 36, on which the underside of the pallets 12 bears. In an equivalent manner, the lower strand 6 of the chain is guided by pads 42, also integral with the frame 36 and on which comes to take support the top of the pallets 12.
Étant donné les dispositions constructives de l'installation, il existe une petite différence de niveau entre le plan de guidage de la chaîne à palettes 4 le long des parties rectilignes de l'installation, et son plan de guidage sur les disques rotatifs 28 et 29 (ce petit décalage de niveau est visible sur la figure 9). Pour monter la chaîne à palettes 4 depuis son plan de guidage rectiligne jusqu'aux disques rotatifs 28 et 29, on a prévu des guides longitudinaux 44 en forme de languettes solidaires des chariots mobiles 30 et 31 , visibles sur la figure 3. Ces guides longitudinaux en forme de languettes 44 viennent prendre appui sous les palettes 12 de la chaîne 4, juste en amont des disques rotatifs 28 et 29.Given the constructive arrangement of the installation, there is a small difference in level between the guide plane of the pallet chain 4 along the rectilinear parts of the installation, and its guide plane on the rotating discs 28 and 29. (this small level shift is visible in Figure 9). To mount the pallet chain 4 from its rectilinear guide plane to the rotary discs 28 and 29, longitudinal guides 44 are provided in the form of tongues integral with the movable carriages 30 and 31, visible in FIG. 3. These longitudinal guides in the form of tongues 44 come to take support under the pallets 12 of the chain 4, just upstream of the rotating discs 28 and 29.
Le fonctionnement du dispositif accumulateur est géré par des moyens informatiques 45 (ordinateur industriel ou automate programmable) qui pilotent les motorisations 22 et 23 en fonction des besoins d'accumulation.The operation of the accumulator device is managed by computer means 45 (industrial computer or programmable automaton) which control the motorizations 22 and 23 according to the accumulation needs.
Ces besoins d'accumulation sont déterminés à partir des informations fournies par des cellules 46, 47 de détection des produits, judicieusement positionnées, ou à partir d'une détection des vitesses des appareils amont et/ou aval (ou des vitesses des transporteurs d'entrée 2 et de sortie 3 associés). En fonctionnement normal, les motorisations 22 et 23 entraînent les pignons moteurs 16 et 17 à la même vitesse ; les chariots 20 et 21 sont alors immobiles.These accumulation needs are determined from information supplied by cells 46, 47 for sensing products, judiciously positioned, or from detection of the speeds of the upstream and / or downstream devices (or of the speeds of the transporters input 2 and output 3 associated). In normal operation, the motors 22 and 23 drive the motor pinions 16 and 17 at the same speed; the carriages 20 and 21 are then stationary.
Pour faire fonctionner l'installation en accumulation de produits, il suffit que la vitesse d'entraînement du pignon d'entrée 16 soit supérieure à la vitesse d'entraînement du pignon de sortie 17. Le chariot mobile supérieur 20 se déplace alors vers l'arrière et la longueur du plan de transport 5 augmente.To operate the installation in accumulation of products, it suffices that the drive speed of the input pinion 16 is greater than the drive speed of the output pinion 17. The upper movable carriage 20 then moves towards the rear and the length of the transport plane 5 increases.
Simultanément, le chariot inférieur 21 se déplace vers {'avant pour fournir la longueur de chaîne nécessaire à l'augmentation de longueur du plan de transport. A l'inverse, pour faire fonctionner l'installation en désaccumulation de produits, les moyens informatiques 45 pilotent les motorisations 22 et 23 de telle sorte que la vitesse du pignon d'entrée 16 soit inférieure à la vitesse du pignon de sortie 17. Le chariot mobile supérieur se déplace alors vers l'avant et la longueur du plan de transport 5 diminue ; le chariot mobile inférieur 21 se déplace simultanément vers l'arrière pour « stocker » la longueur de chaîne 4 liée à la diminution de longueur du plan de transport.Simultaneously, the lower carriage 21 moves forward to provide the chain length necessary to increase the length of the transport plane. Conversely, to operate the installation in de-accumulation of products, the computer means 45 control the motorizations 22 and 23 so that the speed of the input pinion 16 is less than the speed of the output pinion 17. The the upper mobile carriage then moves forward and the length of the transport plane 5 decreases; the lower mobile carriage 21 simultaneously moves rearward to "store" the chain length 4 linked to the reduction in length of the transport plane.
Des butées ou contacteurs appropriés sont avantageusement prévus pour définir les positions extrêmes avant et arrière du chariot supérieur 20 et/ou dû chariot inférieur 21. A titre de variante, la modification de longueur du plan de transport 5 peut être gérée en agissant directement sur les chariots mobiles 20 et/ou 21 , par exemple à partir d'un câble ou d'une chaîne 32 motorisée. Dans ce cas, on peut envisager de motoriser uniquement l'un des pignons 16 ou 17 pour assurer l'entraînement de la chaîne continue 4. Appropriate stops or contactors are advantageously provided to define the extreme front and rear positions of the upper carriage 20 and / or of the lower carriage 21. As a variant, the modification of the length of the transport plane 5 can be managed by acting directly on the mobile carriages 20 and / or 21, for example from a cable or a motorized chain 32. In this case, we can consider motorizing only one of the pinions 16 or 17 to ensure the drive of the continuous chain 4.

Claims

- REVENDICATIONS - - CLAIMS -
1.- Dispositif accumulateur permettant de réguler le transfert de produits entre un appareil amont et un appareil aval, lequel dispositif accumulateur est en forme de plan de transport en U dont la longueur est variable entre ses extrémités fixes d'entrée (A) et de sortie (B), caractérisé en ce qu'il est constitué d'une chaîne motorisée continue (4) du type se présentant sous la forme d'un assemblage d'éléments porteurs (8), laquelle chaîne (4) est conformée en deux U superposés (5, 6), l'un (5) formant un brin supérieur correspondant au plan de transport des produits, et l'autre (6) formant un brin inférieur, cette conformation en deux U étant obtenue :1.- Accumulator device making it possible to regulate the transfer of products between an upstream device and a downstream device, which accumulator device is in the form of a U-shaped transport plane the length of which is variable between its fixed input ends (A) and outlet (B), characterized in that it consists of a continuous motorized chain (4) of the type in the form of an assembly of load-bearing elements (8), which chain (4) is shaped in two U superimposed (5, 6), one (5) forming an upper strand corresponding to the product transport plane, and the other (6) forming a lower strand, this conformation into two U being obtained:
- par enroulement de ladite chaîne (4) autour d'un premier pignon (16) d'axe horizontal fixe au niveau de l'extrémité d'entrée (A), et autour d'un second pignon (17) d'axe horizontal fixe au niveau de l'extrémité de sortie (B),- by winding said chain (4) around a first pinion (16) with a fixed horizontal axis at the entry end (A), and around a second pinion (17) with a horizontal axis fixed at the outlet end (B),
- par guidage à 180° de son brin supérieur (5) autour d'une structure support (20) mobile en translation parallèlement aux deux portions parallèles dudit brin supérieur (5), et- by 180 ° guidance of its upper strand (5) around a support structure (20) movable in translation parallel to the two parallel portions of said upper strand (5), and
- par guidage à 180° de son brin inférieur (6) autour d'une structure support (21) qui est mobile en translation parallèlement aux deux portions parallèles dudit brin inférieur (6), lequel dispositif accumulateur comporte en outre des moyens qui permettent de déplacer les deux structures mobiles (20 et 21) en sens inverse l'une de l'autre, pour adapter la longueur du plan de transport (5) en fonction des besoins d'accumulation.- By 180 ° guidance of its lower strand (6) around a support structure (21) which is movable in translation parallel to the two parallel portions of said lower strand (6), which accumulator device further comprises means which make it possible to move the two mobile structures (20 and 21) in opposite directions to each other, to adapt the length of the transport plane (5) according to the accumulation needs.
2.- Dispositif accumulateur selon la revendication 1, caractérisé en ce que les structures mobiles (20, 21) sur lesquelles s'enroulent les brins supérieur (5) et inférieur (6) de la chaîne continue (4) sont constituées chacune d'un disque de guidage (28, 29) sur la périphérie duquel vient s'appuyer ladite chaîne (4), lesquels disques (28, 29) sont montés rotatifs autour d'un axe vertical sur des chariots (30, 31) guidés en translation le long du bâti (36) de l'installation. 2.- accumulator device according to claim 1, characterized in that the movable structures (20, 21) on which the upper (5) and lower (6) strands of the continuous chain (4) are wound each consist of a guide disc (28, 29) on the periphery of which bears said chain (4), which discs (28, 29) are rotatably mounted around a vertical axis on carriages (30, 31) guided in translation along the frame (36) of the installation.
3.- Dispositif accumulateur selon la revendication 2, caractérisé en ce que les disques (28, 29) de guidage de la chaîne continue (4) sont montés fous en rotation sur leur chariot support (30, 31).3.- accumulator device according to claim 2, characterized in that the discs (28, 29) for guiding the continuous chain (4) are mounted idly in rotation on their support carriage (30, 31).
4.- Dispositif accumulateur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les deux structures mobiles (20, 21) qui guident la chaîne continue (4) sont reliées par un système de câble ou de chaîne (32) passant par au moins une poulie de renvoi (33) de manière à assujettir leur mouvement en translation de sens inverse.4.- accumulator device according to any one of claims 1 to 3, characterized in that the two mobile structures (20, 21) which guide the continuous chain (4) are connected by a cable or chain system (32) passing through at least one return pulley (33) so as to subject their movement in opposite direction translation.
5.- Dispositif accumulateur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'un au moins des pignons (16, 17) de l'extrémité d'entrée (A) et de l'extrémité de sortie (B) est motorisé pour assurer l'entraînement de la chaîne continue (4) et éventuellement pour assurer le déplacement des deux structures mobiles (20 et 21).5.- accumulator device according to any one of claims 1 to 4, characterized in that at least one of the pinions (16, 17) of the inlet end (A) and the outlet end ( B) is motorized to drive the continuous chain (4) and possibly to move the two mobile structures (20 and 21).
6.- Dispositif accumulateur selon la revendication 5, caractérisé en ce que le pignon (16) de l'extrémité d'entrée (A) et le pignon (17) de l'extrémité de sortie (B) sont motorisés.6.- accumulator device according to claim 5, characterized in that the pinion (16) of the inlet end (A) and the pinion (17) of the outlet end (B) are motorized.
7.- Dispositif accumulateur selon la revendication 6, caractérisé en ce qu'il comporte des moyens informatiques (45), en forme d'ordinateur ou d'automate programmable, qui gèrent le fonctionnement de la motorisation (22) du pignon (16) de l'extrémité d'entrée (A) et le fonctionnement de la motorisation (23) du pignon (17) de l'extrémité de sortie (B), pour fixer ou modifier la longueur du plan de transport (5) des produits en fonction des besoins d'accumulation.7.- accumulator device according to claim 6, characterized in that it comprises computer means (45), in the form of a computer or programmable automaton, which manage the operation of the motorization (22) of the pinion (16) of the inlet end (A) and the operation of the motorization (23) of the pinion (17) of the outlet end (B), to fix or modify the length of the transport plane (5) of the products in according to the accumulation needs.
8.- Dispositif accumulateur selon la revendication 7, caractérisé en ce qu'il comporte des moyens informatiques (45) qui gèrent le fonctionnement des motorisations (22 et 23) à partir d'une détection des vitesses des appareils amont et/ou aval.8.- accumulator device according to claim 7, characterized in that it comprises computer means (45) which manage the operation of the motorizations (22 and 23) from a detection of the speeds of the upstream and / or downstream devices.
9.- Dispositif accumulateur selon la revendication 7, caractérisé en ce qu'il comporte des moyens informatiques (45) qui gèrent le fonctionnement des motorisations (22 et 23) à partir des informations reçues de cellules (46, 47) de détection des produits. 9.- accumulator device according to claim 7, characterized in that it comprises computer means (45) which manage the operation of the motorizations (22 and 23) from information received from cells (46, 47) for detecting products. .
PCT/FR2001/001986 2000-06-23 2001-06-22 U-shaped accumulator device for regulating the transfer of products between an upstream apparatus and a downstream apparatus WO2001098187A1 (en)

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EP2960187A1 (en) * 2014-06-26 2015-12-30 Specialty Conveyor B.V. Accumulating portal conveyor
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FR2810653A1 (en) 2001-12-28
FR2810653B1 (en) 2002-11-29

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