EP1228994A2 - Sheet transport device - Google Patents

Sheet transport device Download PDF

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Publication number
EP1228994A2
EP1228994A2 EP02001294A EP02001294A EP1228994A2 EP 1228994 A2 EP1228994 A2 EP 1228994A2 EP 02001294 A EP02001294 A EP 02001294A EP 02001294 A EP02001294 A EP 02001294A EP 1228994 A2 EP1228994 A2 EP 1228994A2
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EP
European Patent Office
Prior art keywords
station
independent motor
transport device
reducer
shaping
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
EP02001294A
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German (de)
French (fr)
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EP1228994B1 (en
EP1228994A3 (en
Inventor
Mauro Chiari
Daniel Tapis
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Bobst Mex SA
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Bobst SA
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Publication date
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Publication of EP1228994A3 publication Critical patent/EP1228994A3/en
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Publication of EP1228994B1 publication Critical patent/EP1228994B1/en
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Classifications

    • 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
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/042—Intermediate conveyors, e.g. transferring devices
    • B65H29/044—Intermediate conveyors, e.g. transferring devices conveying through a machine
    • 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
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/449—Features of movement or transforming movement of handled material
    • B65H2301/4493—Features of movement or transforming movement of handled material intermittent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/90—Machine drive
    • B65H2403/94—Other features of machine drive
    • B65H2403/943—Electronic shaft arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/20—Acceleration or deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/40—Movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/51—Encoders, e.g. linear
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/42—Die-cutting

Definitions

  • the present invention relates to a device for transporting sheets, in a press for shaping sheets of paper or cardboard comprising at least one station for introducing the sheets, a station for shaping, a waste ejection station and a reception station for shaped sheets, said transport device comprising two trains of endless chains arranged to transport station leaves introduction to the receiving station, a transverse drive shaft carrying driving wheels of endless chain trains and at least one sheet grabbing device attached to endless chain trains.
  • transverse here designates a horizontal direction and perpendicular to the machine axis.
  • a cycle of training and shaping of a sheet includes a leaf stopping phase during which it undergoes an operation of shaping, such as cutting or ejecting waste, and at least one phase movement during which the sheet is brought from a station to the next.
  • This movement phase necessarily includes a phase acceleration and a deceleration phase, and, in general, between the two, a phase where the sheet moves at approximately constant speed.
  • Patent CH 411555 proposes to place the drive of the sector toothed under the control of two cams communicating a movement of swinging a lever which, via a connecting rod drives the sector toothed, while among the two elements of the lever cooperating with the two cams, one, the one that transmits the empty return movement to the toothed sector, is resiliently pressed against the cam.
  • the cam system allows modify the motion law by softening the start; however, for a given cam set, this motion law can no longer be modified, except by changing cams.
  • the purpose of the present invention is to provide a device for transport of sheets allowing high rates while allowing perform at will an optimal leaf training cycle without too violent accelerations likely to break the points of attachment between the poses composing a leaf.
  • Another object of the invention is to allow the modification of the pace of a cycle of leaf training independently of the training cycle of the shaping station. Changing the pace of a leaf training cycle is to act on the curves acceleration and deceleration and the respective durations of the phases of a cycle depending on the type of work to be performed, without having to do this, between two jobs, exchanging parts of the transportation device leaves.
  • a sheet transport device in a press for shaping sheets of paper or cardboard comprising at least one sheet feeding station, a shaping station, a waste ejection station and leaf receiving station shaped, said transport device comprising two chain trains without end arranged to transport the sheets from the feed station to the station reception, a transverse drive shaft carrying driving wheels endless chain trains and at least one sheet grabber attached to endless chain trains, leaf transport device in which said transverse drive shaft is driven separately from the drive of the other press stations, by at least one motor independent, said independent motor being a motor capable of operating by training cycles comprising at least one movement phase and a deceleration and / or stop phase controlled by a command, the duration of each independent motor drive cycle being equal to the duration of a shaping cycle of said shaping station.
  • a control device controlling the independent motor by delivery of an appropriate electrical current is capable of adjusting with much more flexibility than a mechanical device could do, the characteristics of the acceleration phase, the deceleration phase and of the shutdown phase of the transport device.
  • Training through of the independent motor allows in particular to better adjust the durations relative phases of movement and stop of the chain train with the stop and movement phases of the cutting plate and, consequently, to reduce the duration of the stage of stop of the plate, which allows increase the overall rate of the machine.
  • Figures 1a and 1b show a motor / gear unit independent 1 implanted in direct connection with an extension of the tree transverse drive 2 which carries the driving wheels 3, 3 'of the trains endless chains 5, 6 of a shaping press.
  • the engine is located at the compartment 4 which, in a shaping press of the prior art, contained the parts of the mechanical drive device for chain trains 5, 6 and parts coupling with the engine driving the various press stations, parts which are here deleted.
  • This independent motor / reducer 1 can therefore be installed without modifying the assembly of an existing machine.
  • the engine can also be implanted in a so-called “mirrored” position, that is to say on the opposite end of the transverse drive shaft of the chain train, so both position called “driver side” CC than in position "side opposite to driver” COC.
  • the independent motor / gearbox 1 can also be mounted in a position between the frames 7, 8 and drive the transverse shaft 2 by means known such as sprockets, belts, chains, which eliminates the or the lateral compartments 4 for training and gaining bulk.
  • the independent motor / reducer driving the endless chain trains 5, 6 is preferably an electric motor with high dynamic regulation.
  • This independent motor / reducer 1 can be chosen from synchronous, asynchronous, direct current, brake or non-brake motors, commercially available.
  • a synchronous brushless drive comprising a HXA60VH type motor marketed by the company ABB Normelec SA (Switzerland) made it possible to drive the endless chain trains 5, 6 d '' a shaping press at high rates, eliminating the original mechanical drives of this machine.
  • Several manufacturers offer electric motors in standard executions which can develop torques of 200-500 Nm, allowing acceleration of chain trains from 25 to 70m / s 2 . The cost of such standard motors is lower than the cost of all the mechanical parts of the known devices.
  • FIG. 2 shows the block diagram of the electronic motor control / independent gearbox 1.
  • the command, CDE receives a signal giving an absolute and incremental encoder 9 the exact position of the cutting plate 10, this signal serving as the real master to the whole system.
  • the CDE command also receives from an encoder absolute and incremental 11 the absolute position of the chain trains 5, 6; the CDE control finally receives the angular position of the motor / gearbox independent 1 detected by the absolute and incremental encoder 12.
  • the comparison of these signals allows the CDE electronic control to determine exactly the blocking and unblocking times of the independent motor / gearbox 1, i.e. determining the start and end of the stop phase and give the current / voltage supply instructions determining, at all times, the accelerations and speeds of the independent motor / reducer 1.
  • FIG. 3 shows on the same graph five curves 13 to 17, showing in arbitrary units, for curve 13, the voltage, for curve 14, the intensity of the current supplying the independent motor / reducer 1, for the curve 15, the acceleration, for curve 16, the speed obtained as well as for curve 17, the angular displacement of the independent motor / reducer 1.
  • the abscissa axis represents the angular rotation of the independent motor / gearbox 1 on one revolution, that is 360 ° which correspond to advancing a sheet from one station to the next.

Abstract

Le dispositif de transport de feuilles, utilisé dans une presse de façonnage de feuilles de papier ou de carton comportant au moins une station d'introduction des feuilles, une station de façonnage, une station d'éjection des déchets et une station de réception des feuilles façonnées, comprend deux trains de chaînes sans fin (5, 6) agencés pour transporter les feuilles de la station d'introduction à la station de réception, un arbre d'entraînement transversal (2) portant des roues menantes (3, 3') des trains de chaînes sans fin (5, 6) et au moins un dispositif de saisie de feuilles attaché aux trains de chaînes sans fin (5, 6). L'arbre d'entraînement transversal (2) est entraîné séparément de l'entraînement des autres stations de la presse, par au moins un moteur/réducteur indépendant (1). Le moteur/réducteur indépendant (1) est un moteur capable de fonctionner par cycles d'entraînement comprenant au moins une phase de mouvement et une phase de décélération et/ou d'arrêt commandées par un dispositif de commande (CDE), la durée de chaque cycle d'entraînement du moteur indépendant étant égale à la durée d'un cycle de façonnage de ladite station de façonnage. <IMAGE>The sheet transport device, used in a press for shaping sheets of paper or cardboard comprising at least one station for introducing the sheets, a shaping station, a waste ejection station and a station for receiving the sheets shaped, comprises two trains of endless chains (5, 6) arranged to transport the sheets from the introduction station to the reception station, a transverse drive shaft (2) carrying driving wheels (3, 3 ') endless chain trains (5, 6) and at least one sheet pickup device attached to the endless chain trains (5, 6). The transverse drive shaft (2) is driven separately from the drive of the other press stations, by at least one independent motor / reducer (1). The independent motor / reducer (1) is a motor capable of operating by drive cycles comprising at least one movement phase and one deceleration and / or stop phase controlled by a control device (CDE), the duration of each independent motor drive cycle being equal to the duration of a shaping cycle of said shaping station. <IMAGE>

Description

La présente invention concerne un dispositif de transport de feuilles, dans une presse de façonnage de feuilles de papier ou de carton comportant au moins une station d'introduction des feuilles, une station de façonnage, une station d'éjection des déchets et une station de réception des feuilles façonnées, ledit dispositif de transport comprenant deux trains de chaínes sans fin agencés pour transporter les feuilles de la station d'introduction à la station de réception, un arbre d'entraínement transversal portant des roues menantes des trains de chaínes sans fin et au moins un dispositif de saisie de feuilles attaché aux trains de chaínes sans fin.The present invention relates to a device for transporting sheets, in a press for shaping sheets of paper or cardboard comprising at least one station for introducing the sheets, a station for shaping, a waste ejection station and a reception station for shaped sheets, said transport device comprising two trains of endless chains arranged to transport station leaves introduction to the receiving station, a transverse drive shaft carrying driving wheels of endless chain trains and at least one sheet grabbing device attached to endless chain trains.

Le terme "transversal" désigne ici une direction horizontale et perpendiculaire à l'axe machine.The term "transverse" here designates a horizontal direction and perpendicular to the machine axis.

Dans les presses de façonnage connues, un seul moteur électrique entraíne usuellement l'ensemble de la machine. Ce moteur entraíne directement un volant d'inertie, un dispositif d'embrayage-frein étant intercalé entre ce volant et le reste de la machine. Ce système entraíne tous les éléments fonctionnant en synchronisme, notamment le sommier mobile de la platine de découpe, les stations d'éjection des déchets et de réception des poses, ainsi que les trains de chaínes portant les barres de pinces assurant la saisie et le transport des feuilles d'une station à la suivante.In known shaping presses, only one electric motor usually drives the whole machine. This engine drives a flywheel directly, a clutch-brake device being inserted between this flywheel and the rest of the machine. This system drives all elements operating in synchronism, in particular the movable base of the cutting plate, waste ejection and reception stations poses, as well as the chains of chains carrying the clamp bars ensuring the picking up and transporting sheets from one station to the next.

Un cycle d'entraínement et de façonnage d'une feuille comprend une phase d'arrêt de la feuille pendant laquelle elle subit une opération de façonnage, telle que découpe ou éjection de déchets, et au moins une phase de mouvement pendant laquelle la feuille est amenée d'une station à la suivante. Cette phase de mouvement comprend nécessairement une phase d'accélération et une phase de décélération, et, en général, entre les deux, une phase où la feuille se déplace à vitesse à peu près constante.A cycle of training and shaping of a sheet includes a leaf stopping phase during which it undergoes an operation of shaping, such as cutting or ejecting waste, and at least one phase movement during which the sheet is brought from a station to the next. This movement phase necessarily includes a phase acceleration and a deceleration phase, and, in general, between the two, a phase where the sheet moves at approximately constant speed.

Divers mécanismes réalisant ce type de cycle ont déjà été proposés, dans lesquels les roues menant les chaínes sont solidaires en rotation d'un organe d'accouplement qui, par déplacement axial alternativement se met en prise ou se dégage d'un organe d'entraínement, en même temps que des moyens d'immobilisation libèrent ou immobilisent les roues menant les chaínes, tandis que l'organe d'entraínement est alternativement entraíné dans l'un et l'autre sens de rotation. Various mechanisms carrying out this type of cycle have already been proposed, in which the wheels leading the chains are integral in rotation of a coupling member which, by axial displacement alternately engages or disengages from a drive member at the same time that immobilization means release or immobilize the wheels driving the chains, while the drive member is alternately driven in either direction of rotation.

De tels dispositifs mécaniques ont été décrits par exemple dans les brevets CH 219422 et CH 411555. Dans les dispositifs de ce type, un secteur denté oscillant agissant sur l'arbre d'entraínement transversal du train de chaínes via un pignon est actionné par une bielle reliée à un excentrique monté sur l'extrémité d'un arbre entraíné par le dispositif d'entraínement général de la machine, qui effectue une rotation complète par course aller et retour du secteur denté oscillant.Such mechanical devices have been described for example in patents CH 219422 and CH 411555. In devices of this type, a sector oscillating toothed acting on the transverse drive shaft of the train chains via a pinion is actuated by a connecting rod connected to a mounted eccentric on the end of a tree driven by the general drive of the machine, which performs one complete rotation per round trip from the oscillating toothed sector.

Par ce type d'entraínement mécanique, on est lié à une loi de mouvement unique, déterminée par la géométrie des pièces. Ce type d'entraínement est bien adapté aux cadences basses ou moyennes jusqu'à environ 5'000-6'000 feuilles/heure; au-delà, les accélérations et décélérations au début et à la fin de la phase de mouvement deviennent très violentes. Or, après l'opération de découpe de la feuille en poses, ces dernières ne sont plus liées entre elles que par les points d'attache, qui peuvent se rompre en cas d'accélération brutale, provoquant un bourrage de la machine.By this type of mechanical drive, we are linked to a law of unique movement, determined by the geometry of the pieces. This guy is well suited to low or medium cadences up to about 5,000-6,000 sheets / hour; beyond, accelerations and decelerations at the beginning and at the end of the movement phase become very violent. Gold, after the sheet cutting operation in poses, the latter are no longer linked together only by the attachment points, which can break in the event sudden acceleration, causing the machine to jam.

Plusieurs dispositifs mécaniques ont été proposés pour remédier à ce défaut. Le brevet CH 411555 propose de placer l'entraínement du secteur denté sous le contrôle de deux cames communiquant un mouvement de balancement à un levier qui, par l'intermédiaire d'une bielle entraíne le secteur denté, alors que parmi les deux éléments du levier coopérant avec les deux cames, l'un, celui qui transmet au secteur denté le mouvement de retour à vide, est élastiquement pressé contre la came. Le système de cames permet de modifier la loi de mouvement en adoucissant le démarrage; toutefois, pour un jeu de cames données, cette loi de mouvement ne peut plus être modifiée, sauf en changeant de cames.Several mechanical devices have been proposed to remedy this defect. Patent CH 411555 proposes to place the drive of the sector toothed under the control of two cams communicating a movement of swinging a lever which, via a connecting rod drives the sector toothed, while among the two elements of the lever cooperating with the two cams, one, the one that transmits the empty return movement to the toothed sector, is resiliently pressed against the cam. The cam system allows modify the motion law by softening the start; however, for a given cam set, this motion law can no longer be modified, except by changing cams.

On connaít aussi des dispositifs dans lesquels on a tenté de supprimer le temps d'arrêt nécessaire à l'opération de découpe. Dans l'un de ces dispositifs, le constructeur a imaginé de donner un mouvement linéaire aux deux sommiers de la station de découpage de sorte que ceux-ci accompagnent le déplacement de la feuille en cours de découpage, solution qui permettait de supprimer le temps d'arrêt en modulant le mouvement linéaire de déplacement des trains de chaínes sans fin.We also know devices in which we tried to eliminate the downtime required for the cutting operation. In one of these devices, the manufacturer imagined to give a linear movement to two box springs from the cutting station so that these accompany moving the sheet during cutting, a solution that allowed eliminate the downtime by modulating the linear movement of movement endless chain trains.

Le but de la présente invention est de proposer un dispositif de transport de feuilles autorisant des cadences élevées tout en permettant de réaliser à volonté un cycle d'entraínement optimal des feuilles sans accélérations trop violentes susceptibles de rompre les points d'attaches entre les poses composant une feuille. Un autre but de l'invention est de permettre la modification de l'allure d'un cycle d'entraínement des feuilles indépendamment du cycle d'entraínement de la station de façonnage. La modification de l'allure d'un cycle d'entraínement des feuilles consiste à agir sur les courbes d'accélération et de décélération et les durées respectives des phases d'un cycle en fonction du type de travail à exécuter, sans pour cela devoir procéder, entre deux travaux, à des échanges de pièces du dispositif de transport de feuilles.The purpose of the present invention is to provide a device for transport of sheets allowing high rates while allowing perform at will an optimal leaf training cycle without too violent accelerations likely to break the points of attachment between the poses composing a leaf. Another object of the invention is to allow the modification of the pace of a cycle of leaf training independently of the training cycle of the shaping station. Changing the pace of a leaf training cycle is to act on the curves acceleration and deceleration and the respective durations of the phases of a cycle depending on the type of work to be performed, without having to do this, between two jobs, exchanging parts of the transportation device leaves.

Ces buts sont atteints par un dispositif de transport de feuilles, dans une presse de façonnage de feuilles de papier ou de carton comportant au moins une station d'introduction des feuilles, une station de façonnage, une station d'éjection des déchets et une station de réception des feuilles façonnées, ledit dispositif de transport comprenant deux trains de chaínes sans fin agencés pour transporter les feuilles de la station d'introduction à la station de réception, un arbre d'entraínement transversal portant des roues menantes des trains de chaínes sans fin et au moins un dispositif de saisie de feuilles attaché aux trains de chaínes sans fin, dispositif de transport de feuilles dans lequel ledit arbre d'entraínement transversal est entraíné séparément de l'entraínement des autres stations de la presse, par au moins un moteur indépendant, ledit moteur indépendant étant un moteur capable de fonctionner par cycles d'entraínement comprenant au moins une phase de mouvement et une phase de décélération et/ou d'arrêt commandées par un dispositif de commande, la durée de chaque cycle d'entraínement du moteur indépendant étant égale à la durée d'un cycle de façonnage de ladite station de façonnage.These goals are achieved by a sheet transport device, in a press for shaping sheets of paper or cardboard comprising at least one sheet feeding station, a shaping station, a waste ejection station and leaf receiving station shaped, said transport device comprising two chain trains without end arranged to transport the sheets from the feed station to the station reception, a transverse drive shaft carrying driving wheels endless chain trains and at least one sheet grabber attached to endless chain trains, leaf transport device in which said transverse drive shaft is driven separately from the drive of the other press stations, by at least one motor independent, said independent motor being a motor capable of operating by training cycles comprising at least one movement phase and a deceleration and / or stop phase controlled by a command, the duration of each independent motor drive cycle being equal to the duration of a shaping cycle of said shaping station.

Le fait d'entraíner le dispositif de transport de feuilles par un moteur autonome au lieu de l'entraíner par le même moteur que les autres stations de la presse de façonnage se heurtait à un préjugé, à savoir la crainte d'un défaut de synchronisation entre l'avance séquentielle des feuilles et le fonctionnement de la platine de découpe des stations en aval. Les inventeurs ont constaté au contraire qu'une commande, notamment une commande électronique, qui reçoit un signal représentatif de la position de la platine de la station de découpe et un signal représentatif de la position du train de chaínes permet de commander le moteur indépendant pilotant l'avancement du train de chaínes en synchronisme parfait avec le cycle de la platine. A l'intérieur d'un cycle d'entraínement, un dispositif de commande pilotant le moteur indépendant par délivrance d'un courant électrique approprié est capable d'ajuster avec beaucoup plus de souplesse que ne pourrait le faire un dispositif mécanique, les caractéristiques de la phase d'accélération, de la phase de décélération et de la phase d'arrêt du dispositif de transport. L'entraínement par l'intermédiaire du moteur indépendant permet en particulier de mieux ajuster les durées relatives des phases de mouvement et d'arrêt du train de chaínes avec les phases d'arrêt et de mouvement de la platine de découpe et, par conséquent, de diminuer la durée de la phase d'arrêt de la platine, ce qui permet d'augmenter la cadence d'ensemble de la machine.The fact of driving the sheet transport device by a motor autonomous instead of driving it by the same motor as the other stations the shaping press ran up against a prejudice, namely the fear of a defect synchronization between the sequential advance of the sheets and the operation of the cutting plate of the downstream stations. The inventors have found at contrary to an order, in particular an electronic order, which receives a signal representative of the position of the stage of the station cutting and a signal representative of the position of the chain train allows control the independent motor driving the advancement of the chain train in perfect synchronism with the turntable cycle. Within a cycle drive, a control device controlling the independent motor by delivery of an appropriate electrical current is capable of adjusting with much more flexibility than a mechanical device could do, the characteristics of the acceleration phase, the deceleration phase and of the shutdown phase of the transport device. Training through of the independent motor allows in particular to better adjust the durations relative phases of movement and stop of the chain train with the stop and movement phases of the cutting plate and, consequently, to reduce the duration of the stage of stop of the plate, which allows increase the overall rate of the machine.

D'autres particularités et avantages de l'invention apparaítront à l'homme du métier à la lecture de la description d'un mode d'exécution, en se référant au dessin, dans lequel;

  • les figures 1a et 1b montrent l'implantation d'un moteur d'entraínement d'un dispositif de transport dans une presse de façonnage, respectivement en vue latérale et en vue de dessus;
  • la figure 2 est une vue schématique du dispositif de commande de ce moteur;
  • la figure 3 représente l'enregistrement des caractéristiques d'un cycle.
Other features and advantages of the invention will appear to those skilled in the art on reading the description of an embodiment, with reference to the drawing, in which;
  • Figures 1a and 1b show the layout of a drive motor of a transport device in a shaping press, respectively in side view and in top view;
  • Figure 2 is a schematic view of the control device of this engine;
  • FIG. 3 represents the recording of the characteristics of a cycle.

Les figures 1a et 1b montrent un ensemble moteur/réducteur indépendant 1 implanté en prise directe avec un prolongement de l'arbre d'entraínement transversal 2 qui porte les roues menantes 3, 3' des trains de chaínes sans fin 5, 6 d'une presse de façonnage. Comme le montre notamment la figure 1a, le moteur est implanté au niveau du compartiment 4 qui, dans une presse de façonnage de l'art antérieur, contenait les pièces du dispositif d'entraínement mécanique des trains de chaínes 5, 6 et les pièces d'accouplement avec le moteur entraínant les diverses stations de la presse, pièces qui sont ici supprimées. Ce moteur/réducteur indépendant 1 peut donc être implanté sans modification de l'ensemble d'une machine existante. L'homme du métier comprendra aisément que le moteur peut également être implanté dans une position dite "en miroir", c'est-à-dire sur l'extrémité opposée de l'arbre d'entraínement transversal du train de chaínes, donc aussi bien en position dite "côté conducteur" CC qu'en position "côté opposé au conducteur" COC. Le moteur/réducteur indépendant 1 peut aussi être monté dans une position entre les bâtis 7, 8 et entraíner l'arbre transversal 2 par des moyens connus tels que pignons, courroies, chaínes, ce qui permet de supprimer le ou les compartiments latéraux 4 d'entraínement et de gagner en encombrement. Figures 1a and 1b show a motor / gear unit independent 1 implanted in direct connection with an extension of the tree transverse drive 2 which carries the driving wheels 3, 3 'of the trains endless chains 5, 6 of a shaping press. As shown in in particular Figure 1a, the engine is located at the compartment 4 which, in a shaping press of the prior art, contained the parts of the mechanical drive device for chain trains 5, 6 and parts coupling with the engine driving the various press stations, parts which are here deleted. This independent motor / reducer 1 can therefore be installed without modifying the assembly of an existing machine. Those skilled in the art will readily understand that the engine can also be implanted in a so-called "mirrored" position, that is to say on the opposite end of the transverse drive shaft of the chain train, so both position called "driver side" CC than in position "side opposite to driver" COC. The independent motor / gearbox 1 can also be mounted in a position between the frames 7, 8 and drive the transverse shaft 2 by means known such as sprockets, belts, chains, which eliminates the or the lateral compartments 4 for training and gaining bulk.

Le moteur/réducteur indépendant entraínant les trains de chaínes sans fin 5, 6 est de préférence un moteur électrique de régulation à haute dynamique. Ce moteur/réducteur indépendant 1 peut être choisi parmi les moteurs synchrones, asynchrones, à courant continu, avec frein ou sans frein, commercialement disponibles. A titre d'exemple, lors d'essais effectués par le déposant, un entraínement brushless synchrone comportant un moteur de type HXA60VH commercialisé par la société ABB Normelec S.A. (Suisse) a permis d'entraíner les trains de chaínes sans fin 5, 6 d'une presse de façonnage à des cadences importantes, en supprimant les entraínements mécaniques d'origine de cette machine. Plusieurs fabricants offrent des moteurs électriques en exécutions standard pouvant développer des couples de 200-500 Nm, permettant d'atteindre des accélérations des trains de chaínes de 25 à 70m/s2. Le coût de tels moteurs standards est inférieur au coût de l'ensemble des pièces mécaniques des dispositifs connus.The independent motor / reducer driving the endless chain trains 5, 6 is preferably an electric motor with high dynamic regulation. This independent motor / reducer 1 can be chosen from synchronous, asynchronous, direct current, brake or non-brake motors, commercially available. For example, during tests carried out by the depositor, a synchronous brushless drive comprising a HXA60VH type motor marketed by the company ABB Normelec SA (Switzerland) made it possible to drive the endless chain trains 5, 6 d '' a shaping press at high rates, eliminating the original mechanical drives of this machine. Several manufacturers offer electric motors in standard executions which can develop torques of 200-500 Nm, allowing acceleration of chain trains from 25 to 70m / s 2 . The cost of such standard motors is lower than the cost of all the mechanical parts of the known devices.

La figure 2 montre le schéma de principe du dispositif de commande électronique du moteur/réducteur indépendant 1. Le dispositif de commande, CDE, reçoit d'un codeur absolu et incrémentiel 9 un signal donnant la position exacte de la platine de découpe 10, ce signal servant de maítre réel à l'ensemble du système. La commande CDE reçoit également d'un codeur absolu et incrémentiel 11 la position absolue des trains de chaínes 5, 6; la commande CDE reçoit enfin la position angulaire du moteur/réducteur indépendant 1 détectée par le codeur absolu et incrémentiel 12. La comparaison de ces signaux permet à la commande électronique CDE de déterminer exactement les temps de blocage et de déblocage du moteur/réducteur indépendant 1, c'est-à-dire de déterminer le début et la fin de la phase d'arrêt et de donner les consignes d'alimentation courant/tension déterminant, à tout instant, les accélérations et les vitesses du moteur/réducteur indépendant 1.Figure 2 shows the block diagram of the electronic motor control / independent gearbox 1. The command, CDE, receives a signal giving an absolute and incremental encoder 9 the exact position of the cutting plate 10, this signal serving as the real master to the whole system. The CDE command also receives from an encoder absolute and incremental 11 the absolute position of the chain trains 5, 6; the CDE control finally receives the angular position of the motor / gearbox independent 1 detected by the absolute and incremental encoder 12. The comparison of these signals allows the CDE electronic control to determine exactly the blocking and unblocking times of the independent motor / gearbox 1, i.e. determining the start and end of the stop phase and give the current / voltage supply instructions determining, at all times, the accelerations and speeds of the independent motor / reducer 1.

La figure 3 montre sur un même graphique cinq courbes 13 à 17, montrant en unités arbitraires, pour la courbe 13, la tension, pour la courbe 14, l'intensité du courant alimentant le moteur/réducteur indépendant 1, pour la courbe 15, l'accélération, pour la courbe 16, la vitesse obtenue ainsi que pour la courbe 17, le déplacement angulaire du moteur/réducteur indépendant 1. Dans cette figure, l'axe des abscisses représente la rotation angulaire du moteur/réducteur indépendant 1 sur un tour, soit 360° qui correspondent à l'avancement d'une feuille d'une station à la suivante immédiate. FIG. 3 shows on the same graph five curves 13 to 17, showing in arbitrary units, for curve 13, the voltage, for curve 14, the intensity of the current supplying the independent motor / reducer 1, for the curve 15, the acceleration, for curve 16, the speed obtained as well as for curve 17, the angular displacement of the independent motor / reducer 1. In this figure, the abscissa axis represents the angular rotation of the independent motor / gearbox 1 on one revolution, that is 360 ° which correspond to advancing a sheet from one station to the next.

On constate notamment sur ces courbes la correspondance entre tension de consigne et vitesse ainsi que l'absence d'accélérations excessives. Par modification de la courbe de tension préprogrammée, on peut aisément supprimer la phase de mouvement à vitesse constante, prolonger ou raccourcir la durée de la phase de mouvement à l'intérieur d'un cycle.We note in particular on these curves the correspondence between setpoint voltage and speed as well as the absence of excessive accelerations. By modifying the preprogrammed voltage curve, you can easily remove the phase of movement at constant speed, extend or shorten the duration of the movement phase within a cycle.

Claims (8)

Dispositif de transport de feuilles, dans une presse de façonnage de feuilles de papier ou de carton comportant au moins une station d'introduction des feuilles, une station de façonnage, une station d'éjection des déchets et une station de réception des feuilles façonnées, ledit dispositif de transport comprenant deux trains de chaínes sans fin (5, 6) agencés pour transporter les feuilles de la station d'introduction à la station de réception, un arbre d'entraínement transversal (2) portant des roues menantes (3, 3') des trains de chaínes sans fin (5, 6) et au moins un dispositif de saisie de feuilles attaché aux trains de chaínes sans fin (5, 6), caractérisé en ce que ledit arbre d'entraínement transversal (2) est entraíné séparément de l'entraínement des autres stations de la presse, par au moins un moteur indépendant (1), ledit moteur indépendant (1) étant un moteur capable de fonctionner par cycles d'entraínement comprenant au moins une phase de mouvement et une phase d'arrêt commandées par un dispositif de commande (CDE), la durée de chaque cycle d'entraínement du moteur indépendant (1) étant égale à la durée d'un cycle de façonnage de ladite station de façonnage.Sheet transport device, in a press for shaping sheets of paper or cardboard comprising at least one station for introducing the sheets, a shaping station, a waste ejection station and a station for receiving the shaped sheets, said transport device comprising two trains of endless chains (5, 6) arranged to transport the leaves from the introduction station to the reception station, a transverse drive shaft (2) carrying driving wheels (3, 3 ') endless chain trains (5, 6) and at least one sheet gripping device attached to the endless chain trains (5, 6), characterized in that said transverse drive shaft (2) is driven separately from the drive of the other press stations, by at least one independent motor (1), said independent motor (1) being a motor capable of operating by drive cycles comprising at least one phase of movement t and a stop phase controlled by a control device (CDE), the duration of each drive cycle of the independent motor (1) being equal to the duration of a shaping cycle of said shaping station. Dispositif de transport selon la revendication 1, caractérisé en ce que ledit moteur indépendant (1) est un moteur/réducteur électrique de régulation à haute dynamique.Transport device according to claim 1, characterized in that said independent motor (1) is an electric motor / reducer of high dynamic regulation. Dispositif de transport selon la revendication 2, caractérisé en ce que ledit moteur/réducteur indépendant (1) est choisi parmi les moteurs synchrones, asynchrones, à courant continu, avec frein ou sans frein.Transport device according to claim 2, characterized in that said independent motor / reducer (1) is chosen from synchronous, asynchronous, direct current, brake or non-brake motors. Dispositif de transport selon la revendication 3, caractérisé en ce que ledit moteur/réducteur indépendant (1) est monté dans le prolongement dudit arbre d'entraínement transversal (2), du côté du conducteur (CC).Transport device according to claim 3, characterized in that said independent motor / reducer (1) is mounted in the extension of said transverse drive shaft (2), on the conductor side (CC). Dispositif de transport selon la revendication 3, caractérisé en ce que ledit moteur/réducteur indépendant (1) est monté dans le prolongement dudit arbre d'entraínement transversal (2) du côté opposé au conducteur (COC).Transport device according to claim 3, characterized in that said independent motor / reducer (1) is mounted in the extension of said transverse drive shaft (2) on the side opposite the conductor (COC). Dispositif de transport selon la revendication 3, caractérisé en ce que ledit moteur/réducteur indépendant (1) est monté entre les bâtis (7, 8).Transport device according to claim 3, characterized in that said independent motor / reducer (1) is mounted between the frames (7, 8). Dispositif de transport selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un dispositif électronique de commande (CDE) du moteur/réducteur indépendant (1) capable d'ajuster, pour chaque cycle d'entraínement, au moins les durées et les amplitudes d'une phase d'accélération, d'une phase de décélération et d'une phase d'arrêt.Transport device according to any one of the preceding claims, characterized in that it comprises an electronic control device (CDE) for the independent motor / reducer (1) capable of adjusting, for each drive cycle, at least the durations and amplitudes of an acceleration phase, a deceleration phase and a stop phase. Dispositif de transport selon la revendication 7, caracatérisé en ce qu'il comprend un codeur (9) de position de la station de façonnage, un codeur (11) de position des trains de chaínes sans fin (5, 6) et un codeur (12) de position angulaire du moteur/réducteur indépendant (1), reliés au dit dispositif électronique de commande (CDE).Transport device according to claim 7, characterized in which it includes an encoder (9) for the position of the shaping station, a encoder (11) for the position of the endless chain trains (5, 6) and an encoder (12) of angular position of the independent motor / reducer (1), connected to said electronic control device (CDE).
EP02001294A 2001-02-01 2002-01-18 Sheet transport device Expired - Lifetime EP1228994B1 (en)

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CH00179/01A CH694638A5 (en) 2001-02-01 2001-02-01 A sheet conveying device.
CH1792001 2001-02-01

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EP1228994A3 EP1228994A3 (en) 2004-03-31
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JP (1) JP3735072B2 (en)
KR (1) KR100435248B1 (en)
CN (1) CN1172835C (en)
AT (1) ATE473939T1 (en)
AU (1) AU1471402A (en)
BR (1) BR0200270B1 (en)
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DE (1) DE60236977D1 (en)
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JP2002284419A (en) 2002-10-03
US6845979B2 (en) 2005-01-25
AU1471402A (en) 2002-08-08
BR0200270A (en) 2002-10-08
TW536519B (en) 2003-06-11
CN1369369A (en) 2002-09-18
KR20020064171A (en) 2002-08-07
DE60236977D1 (en) 2010-08-26
CA2369940A1 (en) 2002-08-01
EP1228994B1 (en) 2010-07-14
US6691997B2 (en) 2004-02-17
US20020101028A1 (en) 2002-08-01
CA2369940C (en) 2007-12-04
BR0200270B1 (en) 2010-06-01
US20040036209A1 (en) 2004-02-26
ATE473939T1 (en) 2010-07-15
JP3735072B2 (en) 2006-01-11
ES2348292T3 (en) 2010-12-02
KR100435248B1 (en) 2004-06-11
CN1172835C (en) 2004-10-27
CH694638A5 (en) 2005-05-13
EP1228994A3 (en) 2004-03-31

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