EP1029669A1 - Method of operating a printing machine comprising at least one object holding device rotatably mounted on a conveyor, and corresponding printing - Google Patents

Method of operating a printing machine comprising at least one object holding device rotatably mounted on a conveyor, and corresponding printing Download PDF

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Publication number
EP1029669A1
EP1029669A1 EP99402920A EP99402920A EP1029669A1 EP 1029669 A1 EP1029669 A1 EP 1029669A1 EP 99402920 A EP99402920 A EP 99402920A EP 99402920 A EP99402920 A EP 99402920A EP 1029669 A1 EP1029669 A1 EP 1029669A1
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EP
European Patent Office
Prior art keywords
speed
rotation
conveyor
cycle
control means
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Granted
Application number
EP99402920A
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German (de)
French (fr)
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EP1029669B1 (en
Inventor
Jean-Louis Dubuit
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Machines Dubuit SAS
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Machines Dubuit SAS
Societe dExploitation des Machines Dubuit SA
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Publication of EP1029669A1 publication Critical patent/EP1029669A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0406—Drying webs by radiation
    • B41F23/0409—Ultraviolet dryers

Definitions

  • the present invention relates generally to machines for print of the kind comprising at least one object holder rotatably mounted on a step-by-step conveyor, at least one drying oven radiation arranged directly above the path of this object-support, and control means capable of ensuring a cycle of rotation of the object support to the right of the drying oven when the conveyor stops.
  • control means correspondents are normally linked to those ensuring the training of printing means otherwise used, and more generally general, with those ensuring the training of the whole machine.
  • the part of the periphery of an object which is exposed to radiation before the rotation of this object and after this rotation receives a amount of drying energy far greater than that received by the other part of this circumference, which is damaging to the drying process.
  • the present invention generally relates to a provision allowing on the contrary to avoid in a very simple and safe way this disadvantage.
  • control means involved in drying with respect to those involved in printing, these control means being for example under the control of separate numerically controlled motors.
  • a printing machine comprising at least one support object-holder rotatably mounted on a step-by-step forward conveyor, at least one radiation drying oven arranged directly above the path of the object support, and control means capable of ensuring a rotation cycle at object-holder support to the right of the drying oven when the conveyor stops, this process being generally characterized in that, by the means control, the speed of rotation of the object-holder is modulated during its rotation cycle as a function of its angular orientation; she has another object is any printing machine implementing such a method.
  • the means of object holder control are under the control of a numerical control.
  • drying can overall be advantageously optimized.
  • this printing machine 10 comprises at least one object holder 11 rotatably mounted on a conveyor 12 step by step, at least one radiation drying oven 13 placed directly above the path of this object-holder 11, and means for control 14 capable of ensuring a rotation cycle on the object-holder 11 to the right of the drying oven 13 when the conveyor 12 stops.
  • the object-holder supports 11 are for example mandrels on which such tubes are each individually fitted.
  • the objects to be printed are vials, it may be cap-tip sets between which such vials may be each individually seized by their own base and neck.
  • the conveyor 12 which has also been shown only in lines interrupted in FIG. 1, can, for example, be a turret or a table rotatably mounted around its axis.
  • the control means not shown, ensuring the advance not to no such conveyor 12 then comprises, most often, an indexer, which is itself rotatably mounted.
  • the drying oven 13 it is, for example, a UV drying.
  • the drying oven 13 extends in below the conveyor 12.
  • the provisions are such that, when the object holder 11 is in line with the drying oven 13, its axis extends parallel to the axis of the lamp 15 and that of the reflector 16.
  • This rotation cycle can extend over one or two turns.
  • a numerically controlled motor 18 for the control of the means of control 14 of the object holder 11, a numerically controlled motor 18.
  • control means 14 ensure that, that, at the start of the rotation cycle of the object-holder 11, there is a peak of speed P corresponding to an acceleration phase P1 followed by a phase of deceleration P2, and we make sure that there is also such a speed spike P at the end of this rotation cycle.
  • the speed of the machine is further controlled. print 10, and therefore, at the speed of the conveyor 12, the speed of rotation nominal V2 between two speed peaks P, for smoothing the assembly.
  • Curve I corresponds to the exposure during the conveyor advance 12.
  • Curve II corresponds to the exposure during the rotation of the support object holder 1 1.
  • Curve III gives the total exposure.
  • this curve III is advantageously related to a line.
  • the amount of drying energy received by the object treated is advantageously standardized throughout the around this object.
  • this additional speed peak P is substantially at halfway between the other two.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Screen Printers (AREA)

Abstract

Objects are unfilled tubular containers mounted on mandrels, or bottles held in neck-and-bottom clamps, and pass on step-by-step conveyor (12) through drying zone. Drier (13) has ultra-violet lamp (15) mounted in reflector (16). While conveyor is stationary, motor (18) rotates printed object through complete revolutions, exposing whole printed surface to radiant source. Rotation speed is constant hence energy is delivered at uniform rate, but overexposure occurs at start and end of revolution. To compensate, numerical controller (14) produces short peaks of speed over main portion of cycle, and modifies slightly speed over main portion of cycle. An Independent claim is also included for the description of the printing machine.

Description

La présente invention concerne d'une manière générale les machines à imprimer du genre comportant au moins un support porte-objet monté rotatif sur un convoyeur à avance pas à pas, au moins un four de séchage à rayonnement disposé à l'aplomb du trajet de ce support porte-objet, et des moyens de commande aptes à assurer un cycle de rotation au support porte-objet au droit du four de séchage lors d'un arrêt du convoyeur.The present invention relates generally to machines for print of the kind comprising at least one object holder rotatably mounted on a step-by-step conveyor, at least one drying oven radiation arranged directly above the path of this object-support, and control means capable of ensuring a cycle of rotation of the object support to the right of the drying oven when the conveyor stops.

Elle vise plus particulièrement le cas où, pour des raisons mécaniques, il n'est possible de mettre en rotation le support porte-objet que lorsque le convoyeur qui le porte est complètement, ou sensiblement complètement, arrêté.It relates more particularly to the case where, for mechanical reasons, it is only possible to rotate the object holder when the conveyor carrying it is completely, or substantially completely, stopped.

Il en résulte, en effet, que, lorsque le support porte-objet, alors porteur d'un objet ayant préalablement reçu une impression à sécher, arrive au droit du four de séchage, une partie non négligeable du pourtour de l'objet se trouve exposée au rayonnement correspondant avant même que cet objet soit en rotation, et que, de même, lorsque le support porte-objet s'éloigne du four de séchage, cette même partie du pourtour de l'objet reste exposée un certain temps à ce rayonnement alors même que l'objet n'est plus en rotation.It follows, in fact, that when the object holder, then carrier of an object having previously received an impression to dry, arrives at the right of drying oven, a significant part of the perimeter of the object is exposed to the corresponding radiation even before this object is in rotation, and that, similarly, when the object holder moves away from the drying, this same part of the periphery of the object remains exposed for a certain time for this radiation even when the object is no longer rotating.

Or, usuellement, à ce jour, la rotation du support porte-objet se fait à vitesse constante.However, usually, to date, the rotation of the object support is done at constant speed.

La raison en est, notamment, que les moyens de commande correspondants sont normalement liés à ceux assurant l'entraínement des moyens d'impression par ailleurs mis en oeuvre, et, d'une manière plus générale, avec ceux assurant l'entraínement de l'ensemble de la machine.The reason is, in particular, that the control means correspondents are normally linked to those ensuring the training of printing means otherwise used, and more generally general, with those ensuring the training of the whole machine.

Ainsi, la partie du pourtour d'un objet qui est exposée au rayonnement avant la mise en rotation de cet objet et après cette mis en rotation reçoit une quantité d'énergie de séchage bien supérieure à celle reçue par l'autre partie de ce pourtour, ce qui est dommageable pour le processus de séchage. Thus, the part of the periphery of an object which is exposed to radiation before the rotation of this object and after this rotation receives a amount of drying energy far greater than that received by the other part of this circumference, which is damaging to the drying process.

Dans le brevet américain No 4 592 276, il a été tenté d'éviter cet inconvénient par une disposition mécanique.In U.S. Patent No. 4,592,276, an attempt was made to avoid this disadvantage by a mechanical arrangement.

Mais celle-ci est en pratique difficile à mettre en oeuvre.But it is in practice difficult to implement.

La présente invention a d'une manière générale pour objet une disposition permettant au contraire d'éviter de manière très simple et sûre cet inconvénient.The present invention generally relates to a provision allowing on the contrary to avoid in a very simple and safe way this disadvantage.

Elle est fondée sur le fait qu'il est maintenant envisagé une indépendance des moyens de commande intervenant au séchage par rapport à ceux intervenant à l'impression, ces moyens de commande étant par exemple sous le contrôle de moteurs à commande numérique distincts.It is based on the fact that there is now envisaged a independence of the control means involved in drying with respect to those involved in printing, these control means being for example under the control of separate numerically controlled motors.

De manière plus précise, elle a tout d'abord pour objet un procédé pour la mise en oeuvre d'une machine à imprimer comportant au moins un support porte-objet monté rotatif sur un convoyeur à avance pas à pas, au moins un four de séchage à rayonnement disposé à l'aplomb du trajet du support porte-objet, et des moyens de commande aptes à assurer un cycle de rotation au support porte-objet au droit du four de séchage lors d'un arrêt du convoyeur, ce procédé étant d'une manière générale caractérisé en ce que, par les moyens de commande, on module la vitesse de rotation du support porte-objet au cours de son cycle de rotation en fonction de son orientation angulaire ; elle a encore pour objet toute machine à imprimer mettant en oeuvre un tel procédé.More specifically, it firstly relates to a process for the use of a printing machine comprising at least one support object-holder rotatably mounted on a step-by-step forward conveyor, at least one radiation drying oven arranged directly above the path of the object support, and control means capable of ensuring a rotation cycle at object-holder support to the right of the drying oven when the conveyor stops, this process being generally characterized in that, by the means control, the speed of rotation of the object-holder is modulated during its rotation cycle as a function of its angular orientation; she has another object is any printing machine implementing such a method.

Par exemple, pour la mise en oeuvre de l'invention, les moyens de commande du support porte-objet sont sous le contrôle d'un moteur à commande numérique.For example, for the implementation of the invention, the means of object holder control are under the control of a numerical control.

Quoi qu'il en soit, par un pilotage approprié de ces moyens de commande, il est fait en sorte, suivant l'invention, que la quantité d'énergie de séchage reçue par un objet au cours de son cycle de rotation soit uniformisée au mieux tout au long du pourtour de cet objet, en tenant compte, pour ce faire, de la quantité d'énergie de séchage reçue individuellement par la partie de ce pourtour exposée au rayonnement avant ce cycle de rotation et après celui-ci.Anyway, by appropriate management of these means of control, it is made so, according to the invention, that the amount of energy of drying received by an object during its rotation cycle is standardized at best throughout the perimeter of this object, taking into account, for this do, the amount of drying energy received individually by the party of this periphery exposed to radiation before this rotation cycle and after this one.

Ainsi, le séchage peut globalement être avantageusement optimisé. Thus, drying can overall be advantageously optimized.

Les caractéristiques et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence aux dessins schématiques annexés sur lesquels :

  • la figure 1 est une vue de bout d'un four de séchage équipant la machine à imprimer suivant l'invention, d'un objet présent au droit de ce four de séchage, et, sous forme schématique, des parties concernées de cette machine à imprimer ;
  • la figure 2 est un diagramme relatif à la loi de mouvement des moyens de commande du convoyeur que comporte la machine à imprimer suivant l'invention ;
  • la figure 3 est un diagramme relatif à la loi de mouvement de la rotation d'un objet au droit du four de séchage de cette machine à imprimer ;
  • la figure 4 est un diagramme relatif au temps d'exposition global de cet objet au rayonnement du four de séchage.
    • The characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the appended schematic drawings in which:
  • FIG. 1 is an end view of a drying oven equipping the printing machine according to the invention, of an object present at the right of this drying oven, and, in schematic form, of the parts concerned of this to print ;
  • Figure 2 is a diagram relating to the law of movement of the control means of the conveyor that comprises the printing machine according to the invention;
  • FIG. 3 is a diagram relating to the law of movement of the rotation of an object in line with the drying oven of this printing machine;
  • FIG. 4 is a diagram relating to the overall exposure time of this object to the radiation of the drying oven.

    • La machine à imprimer 10 suivant l'invention ne sera pas décrite dans tous ses détails ici.The printing machine 10 according to the invention will not be described in all its details here.

    Seuls en seront évoqués dans ce qui suit les éléments nécessaires à la compréhension de l'invention.Only the elements necessary for the understanding of the invention.

    Il suffira, à ce sujet, d'indiquer que cette machine à imprimer 10 comporte au moins un support porte-objet 11 monté rotatif sur un convoyeur 12 à avance pas à pas, au moins un four de séchage 13 à rayonnement disposé à l'aplomb du trajet de ce support porte-objet 11, et des moyens de commande 14 aptes à assurer un cycle de rotation au support porte-objet 11 au droit du four de séchage 13 lors d'un arrêt du convoyeur 12.In this regard, it will suffice to indicate that this printing machine 10 comprises at least one object holder 11 rotatably mounted on a conveyor 12 step by step, at least one radiation drying oven 13 placed directly above the path of this object-holder 11, and means for control 14 capable of ensuring a rotation cycle on the object-holder 11 to the right of the drying oven 13 when the conveyor 12 stops.

    Bien entendu, une pluralité de supports porte-objet 11 sont prévus de place en place sur le convoyeur 12.Of course, a plurality of object holders 11 are provided for place in place on the conveyor 12.

    Lorsque les objets à imprimer, non représentés, sont des tubes à remplir avant d'être refermés, les supports porte-objet 11 sont par exemple des mandrins sur lesquels de tels tubes sont chacun individuellement emboítés. When the objects to be printed, not shown, are tubes to be filled before being closed, the object-holder supports 11 are for example mandrels on which such tubes are each individually fitted.

    En variante, lorsque les objets à imprimer sont des flacons, il peut s'agir d'ensembles culot-pointe entre lesquels de tels flacons peuvent être chacun individuellement saisis par leur propre culot et leur goulot.Alternatively, when the objects to be printed are vials, it may be cap-tip sets between which such vials may be each individually seized by their own base and neck.

    Corollairement, les moyens de commande 14 associés à chacun des supports porte-objet 11, qui n'ont été que schématisés en traits interrompus sur la figure 1, comportent par exemple un quelconque mécanisme calé en rotation sur un tel support porte-objet 11.As a corollary, the control means 14 associated with each of the object-holder supports 11, which have only been shown schematically in broken lines in FIG. 1, include for example any mechanism wedged in rotation on such an object-holder 11.

    Le convoyeur 12, qui n'a été, lui aussi, que schématisé en traits interrompus sur la figure 1, peut, par exemple, être une tourelle ou une table montée rotative autour de son axe.The conveyor 12, which has also been shown only in lines interrupted in FIG. 1, can, for example, be a turret or a table rotatably mounted around its axis.

    Les moyens de commande, non représentés, assurant l'avance pas à pas d'un tel convoyeur 12 comportent, alors, le plus souvent, un indexeur, qui est lui-même monté rotatif.The control means, not shown, ensuring the advance not to no such conveyor 12 then comprises, most often, an indexer, which is itself rotatably mounted.

    Quant au four de séchage 13, il s'agit, par exemple, d'un four de séchage à rayonnement ultraviolet.As for the drying oven 13, it is, for example, a UV drying.

    Sur la figure 1, ont été schématisés, en traits continus, d'une part, la lampe 15 que comporte un tel four de séchage 13, et, d'autre part, le réflecteur 16 usuellement associé à cette lampe 15.In Figure 1, have been shown schematically, in solid lines, on the one hand, the lamp 15 that includes such a drying oven 13, and, on the other hand, the reflector 16 usually associated with this lamp 15.

    Par exemple, et tel que représenté, le four de séchage 13 s'étend en dessous du convoyeur 12.For example, and as shown, the drying oven 13 extends in below the conveyor 12.

    En variante, il peut s'étendre au-dessus de celui-ci.Alternatively, it may extend above it.

    Quoi qu'il en soit, pour plus de détail sur les divers éléments constructifs en jeu, on pourra, par exemple, se reporter à la demande de brevet français déposée le 13 août 1998 sous le No 98 10377.Anyway, for more detail on the various elements constructive in play, one could, for example, refer to the patent application French registered on August 13, 1998 under No 98 10377.

    Celle-ci décrit en effet une machine à imprimer à laquelle les dispositions de la présente invention sont plus particulièrement, mais non nécessairement exclusivement, destinées.This describes in fact a printing machine to which the provisions of the present invention are more particularly, but not necessarily exclusively, intended.

    En pratique, les dispositions sont telles que, lorsque le support porte-objet 11 est au droit du four de séchage 13, son axe s'étend parallèlement à l'axe de la lampe 15 et à celui du réflecteur 16. In practice, the provisions are such that, when the object holder 11 is in line with the drying oven 13, its axis extends parallel to the axis of the lamp 15 and that of the reflector 16.

    Lorsqu'un tel support porte-objet 11 est ainsi au droit du four de séchage 13, il s'agit d'en assurer, par les moyens de commande 14, un cycle de rotation de nature à permettre une exposition au rayonnement correspondant de l'ensemble du pourtour de l'objet qu'il porte.When such an object-holder 11 is thus in line with the drying 13, it is a question of ensuring, by the control means 14, a cycle rotating to allow exposure to radiation corresponding to the entire periphery of the object it carries.

    Ce cycle de rotation peut s'étendre sur un ou deux tours.This rotation cycle can extend over one or two turns.

    Suivant la loi de mouvement donnée par le diagramme de la figure 2, sur lequel sont portés, en abscisses, l'angle de rotation A de l'indexeur assurant la commande du convoyeur 12, et, en ordonnées, le déplacement D de ce convoyeur 12, l'avance d'un pas du convoyeur 12 se fait pendant que l'indexeur fait un demi-tour, et son arrêt intervient pendant le demi-tour suivant de cet indexeur.According to the law of motion given by the diagram of figure 2, on which are plotted, on the abscissa, the angle of rotation A of the indexer ensuring the control of the conveyor 12, and, on the ordinate, the displacement D of this conveyor 12, one step forward of the conveyor 12 takes place while the indexer makes a U-turn, and it stops during the next U-turn of this indexer.

    En principe, la rotation d'un support porte-objet 11 au droit du four de séchage 13 ne peut intervenir que si le convoyeur 12 est complètement à l'arrêt.In principle, the rotation of an object support 11 in line with the drying 13 can only take place if the conveyor 12 is completely the stop.

    En pratique, compte tenu de l'allure tangentielle de la loi de mouvement correspondante à ses extrémités, la rotation du support porte-objet 11 peut intervenir légèrement avant l'arrêt du convoyeur 12 et se prolonger légèrement après le redémarrage de celui-ci.In practice, taking into account the tangential shape of the law of motion corresponding to its ends, the rotation of the object-holder 11 can intervene slightly before the conveyor 12 stops and extend slightly after restarting it.

    Bien entendu, il est associé, au four de séchage 13, des moyens de confinement, non représentés, propres à minimiser la diffusion à l'extérieur du rayonnement dû à la lampe 15.Of course, it is associated with the drying oven 13, means of containment, not shown, capable of minimizing diffusion outside the radiation from the lamp 15.

    Mais, malgré cela, lors de l'approche de ce four de séchage 13, une partie du pourtour du support porte-objet 11, ou, plus précisément, de l'objet porté par celui-ci, en l'espèce la partie de ce pourtour tournée vers le four de séchage 13, reçoit ce rayonnement alors même que le support porte-objet 11 n'est pas encore en rotation, et il en est de même lorsque ce support porte-objet 11 s'éloigne du four de séchage 13 et qu'il n'est donc plus en rotation.But, despite this, when approaching this drying oven 13, a part of the periphery of the object-holder 11, or, more precisely, of the object carried by it, in this case the part of this circumference turned towards the oven of drying 13, receives this radiation while the object holder 11 is not yet in rotation, and it is the same when this object holder 11 moves away from the drying oven 13 and is therefore no longer in rotation.

    Suivant l'invention, pour pallier les conséquences d'une telle exposition d'un objet au rayonnement du four de séchage 13 alors qu'il est à l'arrêt, on module, par les moyens de commande 14, la vitesse de rotation du support porte-objet 11 1 au cours de son cycle de rotation au droit de ce four de séchage 13 en fonction de son orientation angulaire.According to the invention, to alleviate the consequences of such exposure of an object from the radiation of the drying oven 13 while it is stopped, we modulates, by the control means 14, the speed of rotation of the support object holder 11 1 during its rotation cycle to the right of this drying oven 13 as a function of its angular orientation.

    Pour ce faire, et tel que schématisé en traits interrompus sur la figure 1, on met préférentiellement en oeuvre, pour le contrôle des moyens de commande 14 du support porte-objet 11, un moteur à commande numérique 18.To do this, and as shown schematically in broken lines in Figure 1, preferably, for the control of the means of control 14 of the object holder 11, a numerically controlled motor 18.

    Sur le diagramme de la figure 3, qui se rapporte à un cycle de rotation du support porte-objet 11, sont portés, en abscisses, le temps t, et, en ordonnées, la vitesse de rotation V de ce support porte-objet 11 au cours de ce cycle de rotation.In the diagram in Figure 3, which relates to a rotation cycle of the object holder 11, are plotted, on the abscissa, the time t, and, in ordered, the speed of rotation V of this object-holder 11 during this rotation cycle.

    Suivant l'invention, on fait en sorte, par les moyens de commande 14, que, au début du cycle de rotation du support porte-objet 11, il y ait un pic de vitesse P correspondant à une phase d'accélération P1 suivie d'une phase de décélération P2, et on fait en sorte qu'il y ait aussi un tel pic de vitesse P à la fin de ce cycle de rotation.According to the invention, the control means 14 ensure that, that, at the start of the rotation cycle of the object-holder 11, there is a peak of speed P corresponding to an acceleration phase P1 followed by a phase of deceleration P2, and we make sure that there is also such a speed spike P at the end of this rotation cycle.

    Il suffit, en pratique, de piloter en conséquence le moteur à commande numérique 18.In practice, it suffices to control the motor with control accordingly. digital 18.

    Par exemple, et tel que représenté, on fait en sorte que la vitesse de rotation maximale V1 atteinte lors d'un tel pic de vitesse P soit égale à au moins deux fois la vitesse de rotation nominale V2 entre deux pics de vitesse P, qui, elle, est en pratique constante.For example, and as shown, we make sure that the speed of maximum rotation V1 reached during such a speed peak P is equal to at minus twice the nominal speed of rotation V2 between two speed peaks P, who is in constant practice.

    Préférentiellement, on asservit en outre à la vitesse de la machine à imprimer 10, et, donc, à la vitesse du convoyeur 12, la vitesse de rotation nominale V2 entre deux pics de vitesse P, pour un lissage de l'ensemble.Preferably, the speed of the machine is further controlled. print 10, and therefore, at the speed of the conveyor 12, the speed of rotation nominal V2 between two speed peaks P, for smoothing the assembly.

    Sur le diagramme de la figure 4 sont reportés, en abscisses, l'orientation angulaire A', par rapport à une quelconque référence, du support porte-objet 11, et, donc, des zones successives du pourtour de l'objet porté par ce support porte-objet 11, et, en ordonnées, le temps d'exposition T correspondant de cet objet.On the diagram of Figure 4 are plotted, on the abscissa, the orientation angular A ', with respect to any reference, of the object holder 11, and, therefore, successive zones around the periphery of the object carried by this object holder 11, and, on the ordinate, the exposure time T correspondent of this object.

    La courbe I correspond à l'exposition pendant l'avance du convoyeur 12. Curve I corresponds to the exposure during the conveyor advance 12.

    La courbe II correspond à l'exposition pendant la rotation du support porte-objet 1 1 .Curve II corresponds to the exposure during the rotation of the support object holder 1 1.

    La courbe III donne l'exposition totale.Curve III gives the total exposure.

    Ainsi qu'on le notera, cette courbe III s'apparente avantageusement à une droite.As will be noted, this curve III is advantageously related to a line.

    Autrement dit, et comme recherché, la quantité d'énergie de séchage reçue par l'objet traité est avantageusement uniformisée tout au long du pourtour de cet objet.In other words, and as researched, the amount of drying energy received by the object treated is advantageously standardized throughout the around this object.

    Lorsque le cycle de rotation du support porte-objet 11 au droit du four de séchage 13 s'étend sur deux tours, on fait en sorte que, tel que schématisé en traits interrompus à la figure 3, il y ait un pic de vitesse P supplémentaire, en centrant celui-ci par rapport au pic de vitesse P de début de cycle de rotation et par rapport au pic de vitesse P de fin de cycle de rotation.When the rotation cycle of the object-holder 11 at the right of the oven drying 13 extends over two towers, so that, as shown schematically in broken lines in FIG. 3, there is an additional speed peak P, by centering it with respect to the speed peak P at the start of the cycle rotation and with respect to the speed peak P at the end of the rotation cycle.

    Autrement dit, ce pic de vitesse P supplémentaire est sensiblement à mi-distance des deux autres.In other words, this additional speed peak P is substantially at halfway between the other two.

    Bien entendu, la présente invention ne se limite pas à la forme de réalisation et/ou au mode de mise en oeuvre décrits et représentés, mais englobe toute variante d'exécution.Of course, the present invention is not limited to the form of embodiment and / or embodiment described and shown, but includes any variant.

    Claims (9)

    Procédé pour la mise en oeuvre d'une machine à imprimer comportant au moins un support porte-objet (11) monté rotatif sur un convoyeur (12) à avance pas à pas, au moins un four de séchage (13) à rayonnement disposé à l'aplomb du trajet du support porte-objet (11), et des moyens de commande (14) aptes à assurer un cycle de rotation au support porte-objet (11) au droit du four de séchage (13) lors d'un arrêt du convoyeur (12), caractérisé en ce que, par les moyens de commande (14), on module la vitesse de rotation (V) du support porte-objet (11) au cours de son cycle de rotation en fonction de son orientation angulaire.Method for operating a printing machine comprising at least one object support (11) rotatably mounted on a step-by-step conveyor (12), at least one drying oven (13) at radiation arranged directly above the path of the object support (11), and control means (14) capable of ensuring a cycle of rotation of the support object holder (11) in line with the drying oven (13) when the conveyor stops (12), characterized in that, by the control means (14), the speed of rotation (V) of the object support (11) during its rotation according to its angular orientation. Procédé suivant la revendication 1, caractérisé en ce que, par les moyens de commande (14), on fait en sorte que, au début du cycle de rotation du support porte-objet (11), il y ait un pic de vitesse (P) correspondant à une phase d'accélération (P1) suivie d'une phase de décélération (P2).Method according to claim 1, characterized in that, by the control means (14), so that, at the start of the rotation cycle of the object holder (11), there is a speed peak (P) corresponding to a acceleration phase (P1) followed by a deceleration phase (P2). Procédé suivant la revendication 2, caractérisé en ce qu'on fait en sorte qu'il y ait aussi un pic de vitesse (P) à la fin du cycle de rotation.Method according to claim 2, characterized in that one makes so that there is also a speed peak (P) at the end of the rotation cycle. Procédé suivant la revendication 3, caractérisé en ce que, lorsque le cycle de rotation du support porte-objet (11) s'étend sur deux tours, on fait en sorte qu'il y ait un pic de vitesse (P) supplémentaire, en centrant celui-ci par rapport au pic de vitesse (P) de début de cycle de rotation et par rapport au pic de vitesse (P) de fin de cycle de rotation.Method according to claim 3, characterized in that, when the rotation cycle of the object holder (11) extends over two turns, so that there is an additional speed peak (P), centering it by relative to the peak speed (P) at the start of the rotation cycle and relative to the peak speed (P) at the end of the rotation cycle. Procédé suivant l'une quelconque des revendications 2 à 4, caractérisé en ce qu'on fait en sorte que la vitesse de rotation maximale (V1) atteinte lors d'un pic de vitesse (P) soit égale à au moins deux fois la vitesse de rotation nominale (V2) entre deux pics de vitesse (P).Process according to any one of Claims 2 to 4, characterized in that the maximum speed of rotation (V1) is ensured reached during a speed spike (P) is at least twice the speed nominal rotation (V2) between two speed peaks (P). Procédé suivant la revendication 5, caractérisé en ce qu'on asservit à la vitesse du convoyeur (12) la vitesse de rotation nominale (V2) entre deux pics de vitesse (P).Method according to claim 5, characterized in that it controls the speed of the conveyor (12) the nominal speed of rotation (V2) between two speed peaks (P). Procédé suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que, pour le contrôle des moyens de commande (14) du support porte-objet (11), on met en oeuvre un moteur à commande numérique (18).Process according to any one of Claims 1 to 6, characterized in that, for the control of the control means (14) of the object holder (11), a digitally controlled motor is used (18). Machine à imprimer du genre comportant au moins un support porte-objet (11) monté rotatif sur un convoyeur (12) à avance pas à pas, au moins un four de séchage (13) à rayonnement disposé à l'aplomb du trajet de ce support porte-objet (11), et des moyens de commande (14) aptes à assurer un cycle de rotation au support porte-objet (11) au droit du four de séchage (13) lors d'un arrêt du convoyeur (12), caractérisée en ce que, pour la mise en oeuvre d'un procédé conforme à l'une quelconque des revendications 1 à 7, les moyens de commande (14) du support porte-objet (11) sont sous le contrôle d'un moteur à commande numérique (18).Printing machine of the kind comprising at least one support object holder (11) rotatably mounted on a conveyor (12) advance step by step, at at least one radiation drying oven (13) disposed directly above the path of this object support (11), and control means (14) capable of ensuring a rotation cycle on the object holder (11) in front of the drying oven (13) during a stop of the conveyor (12), characterized in that, for setting work of a process according to any one of claims 1 to 7, the control means (14) of the object holder (11) are under the control of a numerically controlled motor (18). Machine à imprimer suivant la revendication 8, caractérisée en ce que la vitesse de rotation nominale (V2) du support porte-objet (11) est asservie à la vitesse du convoyeur (12).Printing machine according to claim 8, characterized in that the nominal rotation speed (V2) of the object holder (11) is controlled by the speed of the conveyor (12).
    EP99402920A 1999-02-19 1999-11-24 Method of operating a printing machine comprising at least one object holding device rotatably mounted on a conveyor, and corresponding printing Expired - Lifetime EP1029669B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9902074 1999-02-19
    FR9902074A FR2789933B1 (en) 1999-02-19 1999-02-19 PROCESS FOR IMPLEMENTING A PRINTING MACHINE COMPRISING AT LEAST ONE OBJECT HOLDER ROTATING MOUNTED ON A CONVEYOR, AND CORRESPONDING PRINTING MACHINE

    Publications (2)

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    EP1029669A1 true EP1029669A1 (en) 2000-08-23
    EP1029669B1 EP1029669B1 (en) 2003-04-02

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    US (1) US6230623B1 (en)
    EP (1) EP1029669B1 (en)
    DE (1) DE69906471T2 (en)
    ES (1) ES2195530T3 (en)
    FR (1) FR2789933B1 (en)

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    US7567834B2 (en) * 2004-05-03 2009-07-28 Medtronic Navigation, Inc. Method and apparatus for implantation between two vertebral bodies

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    Also Published As

    Publication number Publication date
    DE69906471T2 (en) 2004-03-11
    ES2195530T3 (en) 2003-12-01
    US6230623B1 (en) 2001-05-15
    FR2789933B1 (en) 2001-05-04
    DE69906471D1 (en) 2003-05-08
    EP1029669B1 (en) 2003-04-02
    FR2789933A1 (en) 2000-08-25

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