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EP1464490A1 - Method for loading and exchanging the cylinders of the printing groups of a printing machine and apparatus for implementing said method - Google Patents

Method for loading and exchanging the cylinders of the printing groups of a printing machine and apparatus for implementing said method Download PDF

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Publication number
EP1464490A1
EP1464490A1 EP04005499A EP04005499A EP1464490A1 EP 1464490 A1 EP1464490 A1 EP 1464490A1 EP 04005499 A EP04005499 A EP 04005499A EP 04005499 A EP04005499 A EP 04005499A EP 1464490 A1 EP1464490 A1 EP 1464490A1
Authority
EP
European Patent Office
Prior art keywords
screened
station
cylinder
robot
cylinders
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
EP04005499A
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German (de)
French (fr)
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EP1464490B1 (en
EP1464490B8 (en
Inventor
René Bazin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bobst Lyon SAS
Original Assignee
Martin
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Filing date
Publication date
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Publication of EP1464490A1 publication Critical patent/EP1464490A1/en
Publication of EP1464490B1 publication Critical patent/EP1464490B1/en
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Publication of EP1464490B8 publication Critical patent/EP1464490B8/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices

Definitions

  • the present invention relates to a method for charging and exchange the cylinders of the printing units of a printing machine and to a device for implementing the method.
  • a printing machine has several groups of printers arranged, for example in the case of a printer flexographic line, one after the other.
  • each printing unit includes a printing cylinder on which the ink is deposited by a screened cylinder, commonly called "anilox cylinder" by practitioners.
  • This screened cylinder is inked, in a well known manner, by means either a rake chamber, or an ink cylinder associated with an inkwell.
  • the plate cylinder prints directly, by contact, the material to be printed, this by using a pressure cylinder applying the material to be printed against the plate cylinder.
  • the screened cylinders have, at their circumference, cells intended to retain the ink to be deposited on the plate of the plate cylinder.
  • the object of the present invention is to eliminate the drawbacks mentioned above by proposing a method and a device for exchanging the cylinders printing groups of a printing machine in which the security of the operator is assured as perfectly as possible while reducing the maximum time necessary for the exchange operation of the screened cylinders.
  • the device for loading and exchanging the cylinders of the groups printers of a printing machine for implementing the method according to claim 1, comprises a charging station, comprising a transport trolley for screened cylinders, followed by a storage station for screened cylinders, reserve stations arranged in each group printer, means for transporting the screened cylinders, either from the station loading, either from the storage station to a standby position located in the reserve station of one of the printing groups, said means for transporting the screened cylinders being arranged so as to be able take a screened cylinder either from a reserve position or from the storage or either from the loading station to bring it into its position of work, said means for transporting the screened cylinders also being arranged so that a screened cylinder can be removed from its working position to bring it either into a reserve position or into the storage station or either in the loading station and in that it includes means for controlling said means for transporting the screened cylinders.
  • the means for transport the screened cylinders consist of a transport device working together with a robot.
  • the robot is arranged to ability to move on rails arranged parallel between parts of the printing units, one of these rails having a rack in which a pinion of a gearbox meshes coupled to a gear motor.
  • the robot comprises a lifting device consisting of "X" levers secured to a chassis base, said levers supporting a sole provided with support members for the screened cylinders.
  • FIG. 1 shows schematically a printing machine flexographic including a margin station 1 followed by stations 2 or 3, 4, 5 printing stations or groups followed by a receiving station 6.
  • the sheets to be printed, not represented, are transported through these different stations to means of suction conveyors 7.
  • Each printing group 2 to 5 comprises a printing cylinder 8, a pressing cylinder 9 and a screened cylinder or "anilox" 10.
  • Each printing group 2 to 5 also includes a reserve station 11 for screened cylinders 17.
  • Each of these groups printers 2 to 5 is also equipped with a transport device 13 for screened cylinders 10 in function in its respective printing unit.
  • This transport device 13 can be associated with a device for engaging and disengaging the bearings of the screened cylinders 10, a device which is also well known and therefore not shown in this figure.
  • a storage station 14 is also fitted in the lower part of the margin station 1. In the present embodiment, this storage station 14 has slots for four screened cylinders 17. It is well obvious that this number is not limiting and that we could provide a number either more restricted or more important locations for the cylinders screened in storage station 14. It is also planned to precede the flexographic printing machine by a feeding station 16 in screened cylinders 17. This supply station 16 is equipped with a carriage transport 18 which can be inserted or removed manually or automatically from this feed station 16.
  • the printing machine flexographic shown in this figure also includes a robot 19, shown here in its rest position 19a, provided for the exchange of different screened cylinders 10 of the printing units 2 to 5.
  • the flexographic printing machine is shown in operation, that is to say that all the screened cylinders 10 are in operational contact with their respective printing cylinders 8.
  • Figure 2 shows the flexographic printing machine of the Figure 1 in the exchange phase of the screened cylinder 10 of the printing unit 2.
  • This replacement of the screened cylinder 10 is necessary when changing jobs requiring the use of a screened cylinder 17 having a configuration of its cells more adequate than the configuration of the cells of the screened cylinder 10 to do the new job.
  • the cylinder screen 10 the bearings of which have been previously released from their housings in the side frames of the printing unit 2, either manually or automatically using a known device, for example a release of the bearings by unlocking and pivoting, is far from its working position 10a by the transport device 13, this up to a unloading position 10b.
  • Figure 3 illustrates one of the following steps in exchanging the screened cylinder 10, in particular the stage in which the robot 19 begins to move towards the printing unit 2, in the direction indicated by the arrow 20.
  • FIG. 4 shows the robot 19 which has moved so as to come occupy position 19b in the printing unit 2.
  • FIG. 5 represents the robot 19 in position 19b after its lifting device 21 has been actuated so that its lifting member support 23 of the screened cylinder 10 is placed under the lower level of the screened cylinder 10.
  • the robot 19 is moved to a position 19c, this in the direction indicated by the arrow 22.
  • Its lifting device 21 is again actuated so that the support member 23 is brought into contact with the screened cylinder 10.
  • the step next consists, as shown in Figure 7, to move the robot 19 loaded with the screened cylinder 10, in the direction indicated by the arrow 24, up to in position 19b which it previously occupied (see also Figures 4 and 5). Still in this position 19b, the lifting device 21, supporting the screened cylinder 10, is then lowered as shown in FIG. 8.
  • FIG. 9 represents the robot 19 in the following sequence, it is to say in position 19d, during which it will have been moved, always with its lifting device 21 in the lowered position, in the group printer 2.
  • the robot 19 will have brought the screened cylinder 10 vertically from a raster cylinder storage position 25 located in the reserve station 11.
  • the lifting device 21 of the robot 19 will now be controlled so that it is moved vertically towards the storage position 25 in which the screened cylinder 10 will be deposited on lateral supports, not shown here, of the reserve station 11. This arrangement is shown in Figure 10.
  • the robot 19 will then be moved, in the direction shown by arrow 26 to a position 19th in which the support member 23 of the lifting device 21 will be at the vertical of the storage location of a new screened cylinder 17 intended replacing the screened cylinder 10 which has been removed from its working position 10a. Still in the 19th position, the lifting device 21 will be controlled from so that it is moved vertically towards the screened cylinder 17 in its storage position 27 in the reserve station 11, up to that the support member 23 comes into contact with the screened cylinder 17, as shown in Figure 12.
  • the lifting device 21 supporting the screened cylinder 17 will be lowered (see Figure 13) and the robot 19 will be moved in the direction indicated by arrow 28 (see figure 14) until the position 19b which it already occupied during the exchange operation of the screened cylinder 10 (see also Figures 4, 5 and 8).
  • the lifting device 21 of the robot 19 will then be actuated vertically so as to bring the screened cylinder 17 in the vicinity of the transport device 13, as shown in the figure 15.
  • Figure 16 shows that the robot 19 will then be moved a again, in the direction indicated by arrow 29, in position 19c which is identical to the position it occupied in the description of Figure 6.
  • the screened cylinder 17 will then be deposited, in position 17b on the entry of the transport device 13.
  • the robot 19 will be moved again, in the direction indicated by arrow 30, until in position 19b (see also figures 4, 5, 7, 8, 14 and 15) then actuated down to occupy the space it occupied in Figures 8 and 14.
  • the robot 19 can then be finally moved, in the direction indicated by arrow 31, as far as in its rest position 19a.
  • the new cylinder screen 17 has been taken from the reserve station 11 of this printing unit 2.
  • Figure 20 is a perspective view of the lower part 32 a flexographic printing machine with five groups printers 2, 3, 4, 5 and 33 preceded by a feeder 1.
  • Each printing group 2, 3, 4, 5 and 33 is formed by two lateral frames of which only the parts lower 34 have been shown in this figure.
  • Feeder 1 is also formed of two side frames of which only the lower parts 35, constituting the storage station 14, have been shown.
  • Each lower part 34, respectively 35 is equipped with support members 36 intended to receive the ends of the screened cylinders (not shown in this figure).
  • the lower parts 34 each have two members support 36 while the lower parts 35 of the storage station 14 have four.
  • the lower parts 34, 35 are mounted on a rail alignment 37, 38 respectively.
  • the device also comprises two raceways 39 and 40 of which one, raceway 40 is provided a rack 41. These two raceways 39 and 40 are intended for serve as guidance for the robot 19 represented here in position in the group printer 33.
  • the transport carriage 18, which is not shown in the figure will be placed in zone 42 located just before storage station 14 located at the bottom of feeder 1.
  • FIG 21 is a perspective view of a loading member and for unloading the screened cylinders 17, defined in this description, as being the robot 19.
  • This robot 19 is constituted by a base chassis 43. comprising at its front and rear parts a safety device 44.
  • the base frame 43 is arranged to support the lifting device 21 constituted by an elevator formed by levers in "X" 45 and 46 supporting a sole 47 on which is fixed the support member 23 for the cylinders screened.
  • This support member 23 here consists of two V-shaped parts 48 and 49.
  • the elevator of the lifting device 21 is controlled by means of a motor 50 acting on a control screw 51 engaging in a nut arranged in the crosspiece 52 connecting the lower ends of the levers 46.
  • the chassis base 43 is also equipped with a reduction motor 53 coupled to a box gears 54 of which one of the pinions (not shown) meshes with the rack 41 of the raceway 40 of FIG. 20. Piloting the motor 50 of the elevator of the lifting device 21 as well as the control of the reduction motor 53 intended to move the robot 19 are produced by means of a computer program whose program steps are defined according to the different displacements which were mentioned in report with the description of Figures 1 to 19.
  • Figure 22 is a perspective view of a transport cart 18 for a screened cylinder 17.
  • This transport carriage 18 consists of a frame 54 equipped with adjustable castors 55 as well as two centering discs and guide 56 to allow exact positioning of the transport carriage 18 in the introduction station 16, this on a slide (not shown) of well known manufacturing and comprising, for example two guide rails intended to receive the two centering and guide discs 56.
  • a transport carriage 18 produced in this way will allow the operator to move the screened cylinder 17, carried by the transport carriage, to a workstation, located outside the machine, where different operations, for example washing operations, may be performed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Dot-Matrix Printers And Others (AREA)

Abstract

The procedure involves bringing a screened cylinder (17) from a loading station (16) to a storing station (14) or a reserve station (11), using a transport carriage (18). The cylinder is loaded on a transport device (13) using a robot (19) to bring the cylinder to a work position (10a). The cylinder is replaced by bringing it to an unloading position from where the cylinder is moved to one of the stations (11, 14, 16). An independent claim is also included for a device for charging and exchanging the cylinders of printing groups of a printing machine.

Description

La présente invention se rapporte à un procédé pour charger et échanger les cylindres des groupes imprimeurs d'une machine d'impression et à un dispositif pour la mise en oeuvre du procédé.The present invention relates to a method for charging and exchange the cylinders of the printing units of a printing machine and to a device for implementing the method.

Généralement, une machine d'impression comporte plusieurs groupes imprimeurs disposés, par exemple dans le cas d'une imprimeuse flexographique en ligne, l'un à la suite de l'autre. Dans ce genre de machines, chaque groupe imprimeur comprend un cylindre porte-cliché sur lequel l'encre est déposée par un cylindre tramé, communément appelé "cylindre anilox" par les praticiens. Ce cylindre tramé est encré, de façon bien connue, au moyen soit d'une chambre à râcles, soit d'un cylindre encreur associé à un encrier. Le cylindre porte-cliché imprime directement, par contact, la matière à imprimer, cela en utilisant un cylindre presseur appliquant la matière à imprimer contre le cylindre porte-cliché. Les cylindres tramés présentent, à leur circonférence, des alvéoles destinées à retenir l'encre devant être déposée sur le cliché du cylindre porte-cliché. Le volume, par unité de surface, de ces alvéoles varie en fonction des travaux que l'on désire réaliser. Ainsi, il sera nécessaire de prévoir l'utilisation de cylindres tramés différents pour chaque travail spécifique que l'on désire réaliser. Cela implique obligatoirement de procéder à l'échange de ces cylindres tramés en fonction de la qualité d'impression que l'on veut obtenir, un cylindre tramé utilisé pour une impression comportant de grands "à plats", c'est à dire de grandes surfaces encrées uniformément, ne conviendra pas pour des impressions plus fines ne comportant pas des "à plats" importants.Generally, a printing machine has several groups of printers arranged, for example in the case of a printer flexographic line, one after the other. In this kind of machines, each printing unit includes a printing cylinder on which the ink is deposited by a screened cylinder, commonly called "anilox cylinder" by practitioners. This screened cylinder is inked, in a well known manner, by means either a rake chamber, or an ink cylinder associated with an inkwell. The plate cylinder prints directly, by contact, the material to be printed, this by using a pressure cylinder applying the material to be printed against the plate cylinder. The screened cylinders have, at their circumference, cells intended to retain the ink to be deposited on the plate of the plate cylinder. The volume, per unit area, of these cells varies in depending on the work you want to do. Thus, it will be necessary to provide the use of different screened cylinders for each specific job that we wants to achieve. This necessarily involves the exchange of these cylinders screened according to the print quality that one wants to obtain, a screened cylinder used for printing with large "flat", it is ie large areas uniformly inked, will not be suitable for finer prints with no significant "flat".

Des solutions pour échanger un cylindre tramé ont déjà été proposées. Une de ces solutions est décrite dans le brevet CH 686 355 A5. Dans ce brevet, l'échange du cylindre tramé est effectué au moyen d'un chariot comportant des supports de cylindre tramé. Pour échanger un cylindre tramé, ce chariot est introduit latéralement entre deux groupes imprimeurs et le cylindre tramé, ayant été préalablement libéré des ses paliers, est amené au niveau des supports de cylindre tramé du chariot. Le chariot peut être réalisé de différentes façons et comporter soit un système de levage à croisillons soit des vérins agissant directement sur le mouvement vertical des supports de cylindre tramé. Le cylindre tramé ayant été amené au niveau des supports de cylindre tramé, ceux-ci seront déplacés vers le haut de manière à entre en contact avec le cylindre tramé pour le supporter. Le chariot sera ensuite retiré latéralement d'entre les groupes imprimeurs et amené, à l'extérieur de la machine, vers un poste de traitement où l'on pourra procéder à l'enlèvement du cylindre tramé utilisé et à son remplacement par un nouveau cylindre tramé. Le remplacement du cylindre tramé ayant été effectué, le chariot sera à nouveau introduit entre les groupes imprimeurs et le nouveau cylindre tramé sera mis en place en répétant, à l'inverse, les mêmes opérations que lors de son extraction du groupe imprimeur. Une autre solution, sensiblement identique à celle que nous venons de décrire ci-avant, fait l'objet du brevet européen EP 0 401 636 B1.Solutions for exchanging a screened cylinder have already been proposed. One of these solutions is described in patent CH 686 355 A5. In this patent, the exchange of the screened cylinder is carried out by means of a carriage with screened cylinder supports. To exchange a screened cylinder, this carriage is inserted laterally between two printing units and the screened cylinder, having been previously released from its bearings, is brought to the level of the screen's cylinder supports. The cart can be made in different ways and have either a cross brace lifting system or cylinders acting directly on the vertical movement of the support screened cylinder. The screened cylinder having been brought to the level of the screened cylinder, these will be moved up so as to enter contact with the screened cylinder to support it. The cart will then be removed laterally between the printing units and brought, outside the machine, to a treatment station where the removal of the screened cylinder used and to be replaced by a new screened cylinder. The replacement of the screened cylinder having been carried out, the carriage will again be between the printing units and the new screened cylinder will be place by repeating, conversely, the same operations as during its extraction of the printing group. Another solution, substantially identical to that we have just described above, is the subject of European patent EP 0 401 636 B1.

Les deux solutions qui viennent d'être mentionnées présentent toutes l'inconvénient d'obliger un opérateur à s'introduire entre les groupes imprimeurs pour procéder à l'échange des cylindres tramés, ce qui nécessite de sa part une attention particulière quant à sa sécurité. Un autre inconvénient réside dans la durée relativement importante pour réaliser l'opération d'échange des cylindres tramés, ce qui immobilise d'autant le fonctionnement de la machine réduisant par là sa productivité.The two solutions which have just been mentioned present all the disadvantage of forcing an operator to break in between groups printers to exchange the screened cylinders, which requires for his part pay particular attention to his safety. Another downside lies in the relatively long time required to complete the operation exchange of the screened cylinders, which immobilizes the operation accordingly machine thereby reducing its productivity.

La présente invention a pour but de supprimer les inconvénients précités en proposant un procédé et un dispositif pour échanger les cylindres des groupes imprimeurs d'une machine d'impression dans lequel la sécurité de l'opérateur soit assurée de façon la plus parfaite possible tout en diminuant au maximum le temps nécessaire à l'opération d'échange des cylindres tramés.The object of the present invention is to eliminate the drawbacks mentioned above by proposing a method and a device for exchanging the cylinders printing groups of a printing machine in which the security of the operator is assured as perfectly as possible while reducing the maximum time necessary for the exchange operation of the screened cylinders.

A cet effet, le procédé selon l'invention comprend les étapes suivantes :

  • a) pour le chargement des cylindres tramés dans une station de stockage, dans des stations de réserve et dans une position de travail dans les groupes imprimeurs, à :
    • amener premièrement, à l'aide d'un chariot de transport, un premier cylindre tramé dans une station de chargement située à l'entrée d'un margeur;
    • amener, à l'aide d'un robot, le cylindre tramé, pris de la station de chargement, soit dans la station de stockage située dans la partie inférieure du margeur, soit dans l'une des stations de réserve situées dans l'un des groupes imprimeurs, soit dans une position de déchargement de l'un des groupes imprimeurs;
    • amener ensuite à l'aide du chariot de transport, préalablement rechargé, un second cylindre tramé dans la station de chargement;
    • amener, à l'aide du robot, le second cylindre tramé, pris de la station de chargement, soit dans la station de stockage située dans la partie inférieure du margeur, soit dans l'une des stations de réserve situées dans l'un des groupes imprimeurs;
    • amener ensuite à l'aide du chariot de transport, préalablement rechargé, un énième cylindre tramé dans la station de chargement;
    • introduire, à l'aide du robot, l'énième cylindre tramé, pris de la station de chargement, soit dans la station de stockage située dans la partie inférieure du margeur, soit dans l'une des stations de réserve situées dans l'un des groupes imprimeurs;
    • introduire, à l'aide du robot, l'un des cylindres tramés pris, soit du chariot de transport, préalablement rechargé, soit de la station de stockage ou soit de l'une des stations de réserve situées dans l'un des groupes imprimeurs, sur un dispositif de transport qui l'amènera dans sa position de travail, dans son groupe imprimeur respectif;
    • positionner et fixer le cylindre tramé dans sa position de travail dans son groupe imprimeur respectif;
  • b) pour l'échange d'un cylindre tramé dans un des groupes imprimeurs, à :
    • libérer le cylindre tramé à échanger de sa position de travail;
    • amener, à l'aide du dispositif de transport, le cylindre tramé à échanger, dans une position de déchargement;
    • amener, à l'aide du robot, le cylindre tramé à échanger, de la position de déchargement, soit à un emplacement libre de la station de réserve du groupe imprimeur concerné, soit l'amener, toujours à l'aide du robot, à un emplacement libre de la station de stockage, soit l'amener, toujours à l'aide du robot sur le chariot de transport préalablement déchargé;
    • prendre, à l'aide du robot, le cylindre tramé de remplacement, soit dans la station de réserve du groupe imprimeur concerné, soit dans la station de stockage, soit sur le chariot de transport;
    • amener, à l'aide du robot, le cylindre tramé de remplacement sur le dispositif de transport qui l'amènera dans sa position de travail et fixer le cylindre tramé de remplacement dans sa position de travail.
    • To this end, the method according to the invention comprises the following steps:
  • a) for loading the screened cylinders in a storage station, in reserve stations and in a working position in the printing units, at:
    • firstly, using a transport cart, bring a first screened cylinder into a loading station located at the entrance to a feeder;
    • using a robot, bring the screened cylinder, taken from the loading station, either to the storage station located in the lower part of the feeder, or to one of the reserve stations located in one printing units, either in an unloading position of one of the printing units;
    • then using the transport trolley, previously recharged, to bring a second screened cylinder into the loading station;
    • using the robot, bring the second screened cylinder, taken from the loading station, either to the storage station located in the lower part of the feeder, or to one of the reserve stations located in one of the printing groups;
    • then bring using the transport trolley, previously recharged, yet another screened cylinder in the loading station;
    • introduce, using the robot, the umpteenth screened cylinder, taken from the loading station, either in the storage station located in the lower part of the feeder, or in one of the reserve stations located in one printing groups;
    • introduce, using the robot, one of the screened cylinders taken, either from the transport trolley, previously reloaded, either from the storage station or from one of the reserve stations located in one of the printing units , on a transport device which will bring it into its working position, in its respective printing unit;
    • position and fix the screened cylinder in its working position in its respective printing unit;
  • b) for the exchange of a screened cylinder in one of the printing units, at:
    • release the screened cylinder to be exchanged from its working position;
    • bring, using the transport device, the screened cylinder to be exchanged, in an unloading position;
    • using the robot, bring the screened cylinder to be exchanged from the unloading position, either to a free location on the reserve station of the printing group concerned, or bring it, still using the robot, to a free location of the storage station, that is to bring it, always using the robot on the transport cart previously unloaded;
    • using the robot, take the replacement screened cylinder, either in the reserve station of the printing unit concerned, either in the storage station, or on the transport trolley;
    • using the robot, bring the replacement screened cylinder to the transport device which will bring it into its working position and fix the replacement screened cylinder in its working position.

    • Le dispositif pour charger et échanger les cylindres des groupes imprimeurs d'une machine d'impression, pour la mise en oeuvre du procédé selon la revendication 1, comprend une station de chargement, comportant un chariot de transport pour cylindres tramés, suivie d'une station de stockage de cylindres tramés, des stations de réserve agencées dans chaque groupe imprimeur, des moyens pour transporter les cylindres tramés, soit de la station de chargement, soit de la station de stockage jusqu'à une position d'attente située dans la station de réserve de l'un des groupes imprimeurs, lesdits moyens pour transporter les cylindres tramés étant agencés de façon à pouvoir prendre un cylindre tramé soit d'une position de réserve, soit de la station de stockage ou soit de la station de chargement pour l'amener dans sa position de travail, lesdits moyens pour transporter les cylindres tramés étant également agencés de façon à pouvoir retirer un cylindre tramé de sa position de travail pour l'amener indifféremment soit dans une position de réserve, soit dans la station de stockage ou soit dans la station de chargement et en ce qu'il comprend des moyens de pilotage desdits moyens pour transporter les cylindres tramés.The device for loading and exchanging the cylinders of the groups printers of a printing machine, for implementing the method according to claim 1, comprises a charging station, comprising a transport trolley for screened cylinders, followed by a storage station for screened cylinders, reserve stations arranged in each group printer, means for transporting the screened cylinders, either from the station loading, either from the storage station to a standby position located in the reserve station of one of the printing groups, said means for transporting the screened cylinders being arranged so as to be able take a screened cylinder either from a reserve position or from the storage or either from the loading station to bring it into its position of work, said means for transporting the screened cylinders also being arranged so that a screened cylinder can be removed from its working position to bring it either into a reserve position or into the storage station or either in the loading station and in that it includes means for controlling said means for transporting the screened cylinders.

    Selon un mode de réalisation avantageux, les moyens pour transporter les cylindres tramés sont constitués d'un dispositif de transport travaillant conjointement avec un robot.According to an advantageous embodiment, the means for transport the screened cylinders consist of a transport device working together with a robot.

    Selon un autre mode de réalisation, le robot est agencé pour pouvoir se déplacer sur des rails disposés parallèlement entre des parties inférieures des groupes imprimeurs, l'un de ces rails comportant une crémaillère dans laquelle s'engrène un pignon d'une boíte d'engrenages accouplée à un moteur-réducteur.According to another embodiment, the robot is arranged to ability to move on rails arranged parallel between parts of the printing units, one of these rails having a rack in which a pinion of a gearbox meshes coupled to a gear motor.

    Selon une autre configuration avantageuse, le robot comprend un dispositif de levage constitué par des leviers en "X" solidaires d'un châssis de base, lesdits leviers supportant une semelle munie d'organes de support pour les cylindres tramés.According to another advantageous configuration, the robot comprises a lifting device consisting of "X" levers secured to a chassis base, said levers supporting a sole provided with support members for the screened cylinders.

    L'invention sera mieux comprise à l'aide de la description qui va suivre et qui représente un exemple d'exécution, sans caractère limitatif, illustré au moyen des dessins annexés dans lesquels :

  • Les figures 1 à 19 illustrent schématiquement les différentes étapes d'un procédé pour échanger les cylindres tramés d'une machine d'impression flexographique (Pour des raisons de clarté, les signes de référence identiques à ceux de la figure 1 n'ont pas été indiqués sur les figures 2 à 19).
  • La figure 20 est une vue en perspective de la partie inférieure d'une machine d'impression flexographique.
  • La figure 21 est une vue en perspective d'un organe de chargement et de déchargement des cylindres tramés et
  • La figure 22 est une vue en perspective d'un chariot de transport de cylindres tramés.
    • The invention will be better understood with the aid of the description which follows and which represents an exemplary embodiment, without limitation, illustrated by means of the appended drawings in which:
  • Figures 1 to 19 schematically illustrate the different steps of a method for exchanging the screened cylinders of a flexographic printing machine (For reasons of clarity, the reference signs identical to those of Figure 1 have not been shown in Figures 2 to 19).
  • Figure 20 is a perspective view of the bottom of a flexographic printing machine.
  • FIG. 21 is a perspective view of a member for loading and unloading the screened cylinders and
  • FIG. 22 is a perspective view of a carriage for transporting screened cylinders.

    • La figure 1 représente schématiquement une machine d'impression flexographique comprenant une station de marge 1 suivie par des stations d'impression ou groupes imprimeurs 2, 3, 4, 5. La station d'impression 5 est quant à elle suivie par une station de réception 6. Les feuilles à imprimer, non représentées, sont transportées au travers de ces différentes stations au moyen de transporteurs à aspiration 7. Chaque groupe imprimeur 2 à 5 comporte un cylindre imprimeur 8, un cylindre presseur 9 et un cylindre tramé ou "anilox" 10. Chaque groupe imprimeur 2 à 5 comporte également une station de réserve 11 pour cylindres tramés 17. Chacun de ces groupes imprimeurs 2 à 5 est aussi équipé d'un dispositif de transport 13 pour les cylindres tramés 10 en fonction dans son groupe imprimeur respectif. Ce dispositif de transport 13, de construction bien connue, peut être associé avec un dispositif d'engagement et de dégagement des paliers des cylindres tramés 10, dispositif lui aussi bien connu et donc non représenté sur cette figure. Une station de stockage 14 est aussi aménagée dans la partie inférieure de la station de marge 1. Dans la présente exécution, cette station de stockage 14 comporte des emplacements pour quatre cylindres tramés 17. Il est bien évident que ce nombre n'est pas limitatif et que l'on pourrait prévoir un nombre soit plus restreint ou soit plus important d'emplacements pour les cylindres tramés dans la station de stockage 14. Il est également prévu de faire précéder la machine d'impression flexographique par une station d'alimentation 16 en cylindres tramés 17. Cette station d'alimentation 16 est équipée avec un chariot de transport 18 pouvant être inséré ou retiré manuellement ou automatiquement de cette station d'alimentation 16. La machine d'impression flexographique représentée sur cette figure comprend encore un robot 19, représenté ici dans sa position de repos 19a, prévu pour l'échange des différents cylindres tramés 10 des groupes imprimeurs 2 à 5. Dans cette figure, la machine d'impression flexographique est représentée en fonctionnement, c'est à dire que tous les cylindres tramés 10 sont en contact opérationnel avec leurs cylindres imprimeurs 8 respectifs. Figure 1 shows schematically a printing machine flexographic including a margin station 1 followed by stations 2 or 3, 4, 5 printing stations or groups followed by a receiving station 6. The sheets to be printed, not represented, are transported through these different stations to means of suction conveyors 7. Each printing group 2 to 5 comprises a printing cylinder 8, a pressing cylinder 9 and a screened cylinder or "anilox" 10. Each printing group 2 to 5 also includes a reserve station 11 for screened cylinders 17. Each of these groups printers 2 to 5 is also equipped with a transport device 13 for screened cylinders 10 in function in its respective printing unit. This transport device 13, of well known construction, can be associated with a device for engaging and disengaging the bearings of the screened cylinders 10, a device which is also well known and therefore not shown in this figure. A storage station 14 is also fitted in the lower part of the margin station 1. In the present embodiment, this storage station 14 has slots for four screened cylinders 17. It is well obvious that this number is not limiting and that we could provide a number either more restricted or more important locations for the cylinders screened in storage station 14. It is also planned to precede the flexographic printing machine by a feeding station 16 in screened cylinders 17. This supply station 16 is equipped with a carriage transport 18 which can be inserted or removed manually or automatically from this feed station 16. The printing machine flexographic shown in this figure also includes a robot 19, shown here in its rest position 19a, provided for the exchange of different screened cylinders 10 of the printing units 2 to 5. In this figure, the flexographic printing machine is shown in operation, that is to say that all the screened cylinders 10 are in operational contact with their respective printing cylinders 8.

    La figure 2 représente la machine d'impression flexographique de la figure 1 en phase d'échange du cylindre tramé 10 du groupe imprimeur 2. Cet échange du cylindre tramé 10 est nécessité lors d'un changement de travail obligeant l'utilisation d'un cylindre tramé 17 possédant une configuration de ses alvéoles plus adéquate que la configuration des alvéoles du cylindre tramé 10 pour réaliser le nouveau travail. Ainsi que représenté par la figure 2, le cylindre tramé 10, dont les paliers ayant été préalablement dégagés de leurs logements dans les bâtis latéraux du groupe imprimeur 2, soit manuellement, soit automatiquement à l'aide d'un dispositif connu, par exemple un dispositif de dégagement des paliers par déverrouillage et pivotement, est éloigné de sa position de travail 10a par le dispositif de transport 13, cela jusque dans une position de déchargement 10b.Figure 2 shows the flexographic printing machine of the Figure 1 in the exchange phase of the screened cylinder 10 of the printing unit 2. This replacement of the screened cylinder 10 is necessary when changing jobs requiring the use of a screened cylinder 17 having a configuration of its cells more adequate than the configuration of the cells of the screened cylinder 10 to do the new job. As shown in Figure 2, the cylinder screen 10, the bearings of which have been previously released from their housings in the side frames of the printing unit 2, either manually or automatically using a known device, for example a release of the bearings by unlocking and pivoting, is far from its working position 10a by the transport device 13, this up to a unloading position 10b.

    La figure 3 illustre l'une des étapes suivantes de l'échange du cylindre tramé 10, en particulier l'étape dans laquelle le robot 19 commence à se déplacer en direction du groupe imprimeur 2, dans le sens indiqué par la flèche 20.Figure 3 illustrates one of the following steps in exchanging the screened cylinder 10, in particular the stage in which the robot 19 begins to move towards the printing unit 2, in the direction indicated by the arrow 20.

    La figure 4 montre le robot 19 qui s'est déplacé de façon à venir occuper la position 19b dans le groupe imprimeur 2.FIG. 4 shows the robot 19 which has moved so as to come occupy position 19b in the printing unit 2.

    La figure 5 représente le robot 19 dans la position 19b après que son dispositif de levage 21 ait été actionné de façon à ce que son organe de support 23 du cylindre tramé 10 vienne se placer sous le niveau inférieur du cylindre tramé 10. Ensuite, ainsi que représenté sur la figure 6, le robot 19 est déplacé dans une position 19c, cela dans la direction indiquée par la flèche 22. Son dispositif de levage 21 est à nouveau actionné de manière à ce que l'organe de support 23 soit amené au contact du cylindre tramé 10. L'étape suivante consiste, ainsi que le représente la figure 7, à déplacer le robot 19 chargé du cylindre tramé 10, dans la direction indiquée par la flèche 24, jusque dans la position 19b qu'il occupait auparavant (voir aussi les figures 4 et 5). Toujours dans cette position 19b, le dispositif de levage 21, supportant le cylindre tramé 10, est alors abaissé comme cela est représenté sur la figure 8.FIG. 5 represents the robot 19 in position 19b after its lifting device 21 has been actuated so that its lifting member support 23 of the screened cylinder 10 is placed under the lower level of the screened cylinder 10. Next, as shown in FIG. 6, the robot 19 is moved to a position 19c, this in the direction indicated by the arrow 22. Its lifting device 21 is again actuated so that the support member 23 is brought into contact with the screened cylinder 10. The step next consists, as shown in Figure 7, to move the robot 19 loaded with the screened cylinder 10, in the direction indicated by the arrow 24, up to in position 19b which it previously occupied (see also Figures 4 and 5). Still in this position 19b, the lifting device 21, supporting the screened cylinder 10, is then lowered as shown in FIG. 8.

    La figure 9 représente le robot 19 dans la séquence suivante, c'est à dire dans la position 19d, au cours de laquelle il aura été déplacé, toujours avec son dispositif de levage 21 en position abaissée, dans le groupe imprimeur 2. Dans cette position 19d, le robot 19 aura amené le cylindre tramé 10 à la verticale d'une position de stockage 25 de cylindre tramé située dans la station de réserve 11. Le dispositif de levage 21 du robot 19 sera maintenant commandé de façon à ce qu'il soit déplacé verticalement en direction de la position de stockage 25 dans laquelle le cylindre tramé 10 sera déposé sur des supports latéraux, non représentés ici, de la station de réserve 11. Cette disposition est représentée par la figure 10.FIG. 9 represents the robot 19 in the following sequence, it is to say in position 19d, during which it will have been moved, always with its lifting device 21 in the lowered position, in the group printer 2. In this position 19d, the robot 19 will have brought the screened cylinder 10 vertically from a raster cylinder storage position 25 located in the reserve station 11. The lifting device 21 of the robot 19 will now be controlled so that it is moved vertically towards the storage position 25 in which the screened cylinder 10 will be deposited on lateral supports, not shown here, of the reserve station 11. This arrangement is shown in Figure 10.

    Ainsi que représenté sur la figure 11, le robot 19 sera alors déplacé, dans la direction représentée par la flèche 26 jusqu'à une position 19e dans laquelle l'organe de support 23 du dispositif de levage 21 se trouvera à la verticale de l'emplacement de stockage d'un nouveau cylindre tramé 17 destiné à remplacer le cylindre tramé 10 qui a été retiré de sa position de travail 10a. Toujours dans la position 19e, le dispositif de levage 21 sera commandé de façon à ce qu'il soit déplacé verticalement en direction du cylindre tramé 17 se trouvant dans sa position de stockage 27 dans la station de réserve 11, jusqu'à ce que l'organe de support 23 vienne en contact avec le cylindre tramé 17, comme cela est représenté par la figure 12. A cet instant, le dispositif de levage 21 supportant le cylindre tramé 17 sera abaissé (voir figure 13) et le robot 19 sera déplacé dans la direction indiquée par la flèche 28 (voir figure 14) jusqu'à la position 19b qu'il occupait déjà auparavant lors de l'opération d'échange du cylindre tramé 10 (voir aussi les figures 4, 5 et 8). Le dispositif de levage 21 du robot 19 sera alors actionné verticalement de façon à amener le cylindre tramé 17 au voisinage du dispositif de transport 13, comme cela est représenté sur la figure 15.As shown in FIG. 11, the robot 19 will then be moved, in the direction shown by arrow 26 to a position 19th in which the support member 23 of the lifting device 21 will be at the vertical of the storage location of a new screened cylinder 17 intended replacing the screened cylinder 10 which has been removed from its working position 10a. Still in the 19th position, the lifting device 21 will be controlled from so that it is moved vertically towards the screened cylinder 17 in its storage position 27 in the reserve station 11, up to that the support member 23 comes into contact with the screened cylinder 17, as shown in Figure 12. At this time, the lifting device 21 supporting the screened cylinder 17 will be lowered (see Figure 13) and the robot 19 will be moved in the direction indicated by arrow 28 (see figure 14) until the position 19b which it already occupied during the exchange operation of the screened cylinder 10 (see also Figures 4, 5 and 8). The lifting device 21 of the robot 19 will then be actuated vertically so as to bring the screened cylinder 17 in the vicinity of the transport device 13, as shown in the figure 15.

    La figure 16 montre que le robot 19 sera ensuite déplacé une nouvelle fois, dans la direction indiquée par la flèche 29, dans la position 19c qui est identique à la position qu'il occupait dans la description de la figure 6. Le cylindre tramé 17 sera alors déposé, dans la position 17b sur l'entrée du dispositif de transport 13. En référence maintenant avec la figure 17, le robot 19 sera à nouveau déplacé, dans la direction indiquée par la flèche 30, jusque dans la position 19b (voir aussi les figures 4, 5, 7, 8, 14 et 15) puis actionné vers le bas pour venir occuper l'emplacement qu'il occupait sur les figures 8 et 14. Le robot 19 pourra ensuite être finalement déplacé, dans la direction indiquée par la flèche 31, jusque dans sa position de repos 19a. Nous venons de décrire le remplacement du cylindre tramé 10 par un nouveau cylindre tramé 17 dans le groupe imprimeur 2. Dans cette opération, le nouveau cylindre tramé 17 a été prélevé de la station de réserve 11 de ce groupe imprimeur 2. Cependant, il serait tout à fait envisageable, cela en fonction des nécessités inhérentes à un travail donné, de prélever un nouveau cylindre tramé de n'importe quelle station de réserve 11 des autres groupes imprimeurs 3 à 5 ou de la station de stockage 14 située sous la station de marge 1 ou même du chariot de transport 18 situé dans la station d'alimentation 16, cela en amenant le robot 19 dans une position 19f, telle que représentée en traits interrompus sur la figure 19, de façon à ce qu'il puisse venir prélever un autre cylindre tramé 17. Il serait aussi possible d'imaginer d'équiper toutes les stations de réserve 11 de deux cylindres tramés 17 et de laisser libre un emplacement pour cylindre tramé soit dans la station de stockage 14 située sous la station de marge 1, soit sur le chariot de transport 18 placé dans la station d'alimentation 16. Dans l'éventualité que nous venons de mentionner, il est évident que le pilotage du robot 19 devrait correspondre au choix de l'une ou l'autre des solutions adoptées pour l'échange des cylindres tramés. Dans l'exemple que nous venons de décrire, c'est à dire le remplacement du cylindre tramé 10 du groupe imprimeur 2 par un cylindre tramé 17 prélevé de la station de réserve 11 de ce groupe imprimeur, ce remplacement peut s'effectuer "en temps masqué" c'est à dire sans que la machine d'impression flexographique soit arrêtée. Dans ce cas, il est possible d'effectuer un travail ne nécessitant que l'emploi des groupes imprimeurs 3 à 5.Figure 16 shows that the robot 19 will then be moved a again, in the direction indicated by arrow 29, in position 19c which is identical to the position it occupied in the description of Figure 6. The screened cylinder 17 will then be deposited, in position 17b on the entry of the transport device 13. Referring now to FIG. 17, the robot 19 will be moved again, in the direction indicated by arrow 30, until in position 19b (see also figures 4, 5, 7, 8, 14 and 15) then actuated down to occupy the space it occupied in Figures 8 and 14. The robot 19 can then be finally moved, in the direction indicated by arrow 31, as far as in its rest position 19a. We come describe the replacement of the screened cylinder 10 with a new screened cylinder 17 in the printing unit 2. In this operation, the new cylinder screen 17 has been taken from the reserve station 11 of this printing unit 2. However, it would be entirely possible, that according to the necessities inherent in a given job, to take a new screened cylinder from any reserve station 11 of the other printing groups 3 to 5 or of the storage station 14 located under the margin station 1 or even of the transport trolley 18 located in the supply station 16, this by bringing the robot 19 in a position 19f, as shown in broken lines in Figure 19, so that it can come and pick up another screened cylinder 17. It would also be possible to imagine equipping all the reserve stations 11 of two screened cylinders 17 and to leave free a space for cylinder screened either in storage station 14 located under the margin 1, i.e. on the transport trolley 18 placed in the supply station 16. In the event that we have just mentioned, it is obvious that the piloting the robot 19 should correspond to the choice of one or other of the solutions adopted for the exchange of screened cylinders. In the example that we have just described, that is to say the replacement of the screened cylinder 10 of the printing unit 2 by a screened cylinder 17 taken from the reserve station 11 of this printing unit, this replacement can be done "in time masked "ie without the flexographic printing machine being stopped. In this case, it is possible to perform work requiring only the use of printing units 3 to 5.

    Un exemple d'exécution d'un dispositif pour la mise en oeuvre du procédé sera maintenant décrit en référence avec les figures 20 à 22.An example of execution of a device for implementing the the process will now be described with reference to FIGS. 20 to 22.

    La figure 20 est une vue en perspective de la partie inférieure 32 d'une machine d'impression flexographique comportant cinq groupes imprimeurs 2, 3, 4, 5 et 33 précédés d'un margeur 1. Chaque groupe imprimeur 2, 3, 4, 5 et 33 est formé de deux bâtis latéraux dont seules les parties inférieures 34 ont été représentées sur cette figure. Le margeur 1 est lui aussi formé de deux bâtis latéraux dont seules les parties inférieures 35, constituant la station de stockage 14, ont été représentées. Chaque partie inférieure 34, respectivement 35 est équipée d'organes de support 36 destinés à recevoir les extrémités des cylindres tramés (non représentés sur cette figure). Dans l'exemple choisi, les parties inférieures 34 comportent chacune deux organes de support 36 alors que les parties inférieures 35 de la station de stockage 14 en comportent quatre. Les parties inférieures 34, 35 sont montées sur un rail d'alignement 37, respectivement 38. Le dispositif comprend encore deux chemins de roulement 39 et 40 dont l'un, le chemin de roulement 40 est muni d'une crémaillère 41. Ces deux chemins de roulement 39 et 40 sont destinés à servir de guidage pour le robot 19 représenté ici en position dans le groupe imprimeur 33. Le chariot de transport 18, qui n'est pas représenté sur la figure viendra se placer dans la zone 42 située juste avant la station de stockage 14 localisée à la partie inférieure du margeur 1.Figure 20 is a perspective view of the lower part 32 a flexographic printing machine with five groups printers 2, 3, 4, 5 and 33 preceded by a feeder 1. Each printing group 2, 3, 4, 5 and 33 is formed by two lateral frames of which only the parts lower 34 have been shown in this figure. Feeder 1 is also formed of two side frames of which only the lower parts 35, constituting the storage station 14, have been shown. Each lower part 34, respectively 35 is equipped with support members 36 intended to receive the ends of the screened cylinders (not shown in this figure). In the example chosen, the lower parts 34 each have two members support 36 while the lower parts 35 of the storage station 14 have four. The lower parts 34, 35 are mounted on a rail alignment 37, 38 respectively. The device also comprises two raceways 39 and 40 of which one, raceway 40 is provided a rack 41. These two raceways 39 and 40 are intended for serve as guidance for the robot 19 represented here in position in the group printer 33. The transport carriage 18, which is not shown in the figure will be placed in zone 42 located just before storage station 14 located at the bottom of feeder 1.

    La figure 21 est une vue en perspective d'un organe de chargement et de déchargement des cylindres tramés 17, défini dans cette description, comme étant le robot 19. Ce robot 19 est constitué par un châssis de base 43. comportant à ses parties avant et arrière un dispositif de sécurité 44. Le châssis de base 43 est agencé de façon à supporter le dispositif de levage 21 constitué par un élévateur formé de leviers en "X" 45 et 46 supportant une semelle 47 sur laquelle est fixé l'organe de support 23 pour les cylindres tramés. Cet organe de support 23 est ici constitué de deux pièces en V 48 et 49. L'élévateur du dispositif de levage 21 est commandé au moyen d'un moteur 50 agissant sur une vis de commande 51 s'engageant dans un écrou disposé dans la traverse 52 reliant les extrémités inférieures des leviers 46. Le châssis de base 43 est de plus équipé avec un moteur réducteur 53 couplé à une boíte d'engrenages 54 dont l'un des pignons (non représenté) engrène avec la crémaillère 41 du chemin de roulement 40 de la figure 20. Le pilotage du moteur 50 de l'élévateur du dispositif de levage 21 ainsi que le pilotage du moteur réducteur 53 destiné à assurer le déplacement du robot 19 sont réalisés au moyen d'un programme d'ordinateur dont les pas de programme sont définis en fonction des différents déplacements qui ont été mentionnés en rapport avec la description des figures 1 à 19.Figure 21 is a perspective view of a loading member and for unloading the screened cylinders 17, defined in this description, as being the robot 19. This robot 19 is constituted by a base chassis 43. comprising at its front and rear parts a safety device 44. The base frame 43 is arranged to support the lifting device 21 constituted by an elevator formed by levers in "X" 45 and 46 supporting a sole 47 on which is fixed the support member 23 for the cylinders screened. This support member 23 here consists of two V-shaped parts 48 and 49. The elevator of the lifting device 21 is controlled by means of a motor 50 acting on a control screw 51 engaging in a nut arranged in the crosspiece 52 connecting the lower ends of the levers 46. The chassis base 43 is also equipped with a reduction motor 53 coupled to a box gears 54 of which one of the pinions (not shown) meshes with the rack 41 of the raceway 40 of FIG. 20. Piloting the motor 50 of the elevator of the lifting device 21 as well as the control of the reduction motor 53 intended to move the robot 19 are produced by means of a computer program whose program steps are defined according to the different displacements which were mentioned in report with the description of Figures 1 to 19.

    La figure 22 est une vue en perspective d'un chariot de transport 18 pour un cylindre tramé 17. Ce chariot de transport 18 se compose d'un bâti 54 équipé de roulettes orientables 55 ainsi que de deux disques de centrage et de guidage 56 pour permettre le positionnement exact du chariot de transport 18 dans la station d'introduction 16, cela sur une coulisse (non représentée) de fabrication bien connue et comprenant, par exemple deux rails de guidage destinés à recevoir les deux disques de centrage et de guidage 56.Figure 22 is a perspective view of a transport cart 18 for a screened cylinder 17. This transport carriage 18 consists of a frame 54 equipped with adjustable castors 55 as well as two centering discs and guide 56 to allow exact positioning of the transport carriage 18 in the introduction station 16, this on a slide (not shown) of well known manufacturing and comprising, for example two guide rails intended to receive the two centering and guide discs 56.

    Un chariot de transport 18 réalisé de cette manière va permettre à l'opérateur de déplacer le cylindre tramé 17, porté par le chariot de transport, vers une station de travail, située à l'extérieur de la machine, dans laquelle différentes opérations, par exemple des opérations de lavage, pourront être effectuées.A transport carriage 18 produced in this way will allow the operator to move the screened cylinder 17, carried by the transport carriage, to a workstation, located outside the machine, where different operations, for example washing operations, may be performed.

    Claims (5)

    Procédé pour charger et échanger les cylindres des groupes imprimeurs (2 à 5) d'une machine d'impression, caractérisé en ce qu'il comprend les étapes suivantes : a) pour le chargement des cylindres tramés dans une station de stockage (14), dans des stations de réserve (11) et dans une position de travail (10a) dans les groupes imprimeurs (2 à 5), à : amener premièrement, à l'aide d'un chariot de transport (18), un premier cylindre tramé (17) dans une station de chargement (16) située à l'entrée d'un margeur (1); amener, à l'aide d'un robot (19), le cylindre tramé (17), pris de la station de chargement (16), soit dans la station de stockage (14) située dans la partie inférieure du margeur (1), soit dans l'une des stations de réserve (11) situées dans l'un des groupes imprimeurs (2 à 5), soit dans une position de déchargement (10b) de l'un des groupes imprimeurs; amener ensuite à l'aide du chariot de transport (18), préalablement rechargé, un second cylindre tramé (17) dans la station de chargement (16); amener, à l'aide du robot (19), le second cylindre tramé (17), pris de la station de chargement (16), soit dans la station de stockage (14) située dans la partie inférieure du margeur (1), soit dans l'une des stations de réserve (11) situées dans l'un des groupes imprimeurs (2 à 5); amener ensuite à l'aide du chariot de transport (18), préalablement rechargé, un énième cylindre tramé (17) dans la station de chargement (16); introduire, à l'aide du robot (19), l'énième cylindre tramé (17), pris de la station de chargement (16), soit dans la station de stockage (14) située dans la partie inférieure du margeur (1), soit dans l'une des stations de réserve (11) situées dans l'un des groupes imprimeurs (2 à 5); introduire, à l'aide du robot (19), l'un des cylindres tramés (17) pris, soit du chariot de transport (18), préalablement rechargé, soit de la station de stockage (14) ou soit de l'une des stations de réserve (11) situées dans l'un des groupes imprimeurs (2 à 5), sur un dispositif de transport (13) qui l'amènera dans sa position de travail (10a), dans son groupe imprimeur (2 à 5) respectif; positionner et fixer le cylindre tramé (17) dans sa position de travail (10a) dans son groupe imprimeur (2 à 5) respectif; b) pour le remplacement d'un cylindre tramé (10) de l'un des groupes imprimeurs (2 à 5), à : libérer le cylindre tramé (10), à remplacer, de sa position de travail (10a); amener, à l'aide du dispositif de transport (13), le cylindre tramé (10) à remplacer, dans une position de déchargement (10b); amener, à l'aide du robot (19), le cylindre tramé (10) à remplacer, de la position de déchargement (10b), soit à un emplacement libre de la station de réserve (11) du groupe imprimeur (2 à 5) concerné, soit l'amener, toujours à l'aide du robot (19), à un emplacement libre de la station de stockage (14), soit l'amener, toujours à l'aide du robot (19) sur le chariot de transport (18) préalablement déchargé; prendre, à l'aide du robot (19), le cylindre tramé (17) de remplacement, soit dans la station de réserve (11) du groupe imprimeur (2 à 5) concerné, soit dans la station de stockage (14), soit sur le chariot de transport (18) ; amener, à l'aide du robot (19), le cylindre tramé (17) de remplacement sur le dispositif de transport (13) qui l'amènera dans sa position de travail (10a) et fixer le cylindre tramé (17) de remplacement dans sa position de travail (10a). Method for loading and exchanging the cylinders of the printing units (2 to 5) of a printing machine, characterized in that it comprises the following steps: a) for loading the screened cylinders in a storage station (14), in reserve stations (11) and in a working position (10a) in the printing units (2 to 5), at: firstly, using a transport cart (18), bring a first screened cylinder (17) into a loading station (16) located at the entrance to a feeder (1); using a robot (19), bring the screened cylinder (17), taken from the loading station (16), either into the storage station (14) located in the lower part of the feeder (1) , either in one of the reserve stations (11) located in one of the printing units (2 to 5), or in an unloading position (10b) of one of the printing units; then using the transport trolley (18), previously reloaded, to bring a second screened cylinder (17) into the loading station (16); using the robot (19), bring the second screened cylinder (17), taken from the loading station (16), either into the storage station (14) located in the lower part of the feeder (1), either in one of the reserve stations (11) located in one of the printing groups (2 to 5); then using the transport trolley (18), previously reloaded, to bring yet another screened cylinder (17) into the loading station (16); introduce, using the robot (19), the umpteenth screened cylinder (17), taken from the loading station (16), or into the storage station (14) located in the lower part of the feeder (1) , or in one of the reserve stations (11) located in one of the printing groups (2 to 5); introduce, using the robot (19), one of the screened cylinders (17) taken either from the transport cart (18), previously recharged, or from the storage station (14) or either reserve stations (11) located in one of the printing units (2 to 5), on a transport device (13) which will bring it into its working position (10a), in its printing unit (2 to 5 ) respective; position and fix the screened cylinder (17) in its working position (10a) in its respective printing unit (2 to 5); b) for the replacement of a screened cylinder (10) of one of the printing units (2 to 5), at: release the screened cylinder (10), to be replaced, from its working position (10a); bringing, using the transport device (13), the screened cylinder (10) to be replaced, in an unloading position (10b); using the robot (19), bring the screened cylinder (10) to be replaced, from the unloading position (10b), or to a free location in the reserve station (11) of the printing unit (2 to 5 ) concerned, either bring it, still using the robot (19), to a free location in the storage station (14), or bring it, still using the robot (19) on the trolley transport (18) previously unloaded; using the robot (19), take the replacement screened cylinder (17), either in the reserve station (11) of the printing unit (2 to 5) concerned, or in the storage station (14), either on the transport carriage (18); using the robot (19), bring the replacement screened cylinder (17) onto the transport device (13) which will bring it into its working position (10a) and fix the replacement screened cylinder (17) in its working position (10a). Dispositif pour charger et échanger les cylindres des groupes imprimeurs (2 à 5) d'une machine d'impression, pour la mise en oeuvre du procédé selon la revendication 1, caractérisé en ce qu'il comprend une station de chargement (16), comportant un chariot de transport (18) pour cylindres tramés (17), suivie d'une station de stockage (14) de cylindres tramés (17), des stations de réserve (11) agencées dans chaque groupe imprimeur (2 à 5), des moyens pour transporter les cylindres tramés (17), soit de la station de chargement (16), soit de la station de stockage (14) jusqu'à une position d'attente située dans la station de réserve (11) de l'un des groupes imprimeurs (2 à 5), lesdits moyens pour transporter les cylindres tramés (17) étant agencés de façon à pouvoir prendre un cylindre tramé (17) soit d'une position de réserve (11 ), soit de la station de stockage (14) ou soit de la station de chargement (16) pour l'amener dans sa position de travail (10a), lesdits moyens pour transporter les cylindres tramés (17) étant également agencés de façon à pouvoir retirer un cylindre tramé (17) de sa position de travail (10a) pour l'amener indifféremment soit dans une position de réserve (11), soit dans la station de stockage (14) ou soit dans la station de chargement (16) et en ce qu'il comprend des moyens de pilotage desdits moyens pour transporter les cylindres tramés (17).Device for loading and exchanging the cylinders of the printing units (2 to 5) of a printing machine, for implementing the method according to claim 1, characterized in that it comprises a loading station (16), comprising a transport carriage (18) for screened cylinders (17), followed by a storage station (14) of screened cylinders (17), reserve stations (11) arranged in each printing unit (2 to 5), means for transporting the screened cylinders (17), either from the loading station (16) or from the storage station (14) to a standby position located in the reserve station (11) of the one of the printing units (2 to 5), said means for transporting the screened cylinders (17) being arranged so as to be able to take a screened cylinder (17) either from a reserve position (11) or from the storage station (14) or either from the loading station (16) to bring it into its working position (10a), said means for transporting the screened cylinders (17) being also arranged so that a screened cylinder (17) can be removed from its working position (10a) to bring it either into a reserve position (11) or into the station storage (14) or either in the loading station (16) and in that it comprises means for controlling said means for transporting the screened cylinders (17). Dispositif selon la revendication 2, caractérisé en ce que les moyens pour transporter les cylindres tramés (17) sont constitués d'un dispositif de transport (13) travaillant conjointement avec un robot (19).Device according to claim 2, characterized in that the means for transporting the screened cylinders (17) consist of a transport device (13) working together with a robot (19). Dispositif selon la revendication 3, caractérisé en ce que le robot (19) est agencé pour pouvoir se déplacer sur des rails (39, 40) disposés parallèlement entre des parties inférieures (34) des groupes imprimeurs (2 à 5), l'un de ces rails (40) comportant une crémaillère (41) dans laquelle s'engrène un pignon d'une boíte d'engrenages (54) accouplée à un moteur-réducteur (53).Device according to claim 3, characterized in that the robot (19) is arranged to be able to move on rails (39, 40) arranged in parallel between lower parts (34) of the printing units (2 to 5), one of these rails (40) having a rack (41) in which meshes a pinion of a gearbox (54) coupled to a gear motor (53). Dispositif selon la revendication 3, caractérisé en ce que le robot (19) comprend un dispositif de levage (21) constitué par des leviers en "X" (45, 46) solidaires d'un châssis de base (43), lesdits leviers supportant une semelle (47) munie d'organes de support (23) pour les cylindres tramés (17).Device according to claim 3, characterized in that the robot (19) comprises a lifting device (21) constituted by levers in "X" (45, 46) integral with a base frame (43), said levers supporting a sole (47) provided with support members (23) for the screened cylinders (17).
    EP04005499A 2003-03-18 2004-03-08 Method for loading and exchanging the cylinders of the printing groups of a printing machine and apparatus for implementing said method Expired - Lifetime EP1464490B8 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR0303387A FR2852554A1 (en) 2003-03-18 2003-03-18 Flexographic printing machines cylinder loading and exchanging procedure, involves bringing cylinder from storing/reserve station to work position and replacing cylinder to storing/reserve station, using transport device and robot
    FR0303387 2003-03-18

    Publications (3)

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    EP1464490A1 true EP1464490A1 (en) 2004-10-06
    EP1464490B1 EP1464490B1 (en) 2011-10-05
    EP1464490B8 EP1464490B8 (en) 2012-08-15

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    US (2) US7040229B2 (en)
    EP (1) EP1464490B8 (en)
    CN (1) CN1302924C (en)
    AT (1) ATE527112T1 (en)
    ES (1) ES2372488T3 (en)
    FR (1) FR2852554A1 (en)

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    FR3092789A1 (en) 2019-02-20 2020-08-21 Bobst Lyon MANIPULATION TROLLEY FOR PRINTER GROUP CYLINDER IN A PRINTING MACHINE

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    Also Published As

    Publication number Publication date
    US20040182271A1 (en) 2004-09-23
    CN1302924C (en) 2007-03-07
    ES2372488T3 (en) 2012-01-20
    US20050132917A1 (en) 2005-06-23
    US7040229B2 (en) 2006-05-09
    ATE527112T1 (en) 2011-10-15
    CN1530221A (en) 2004-09-22
    EP1464490B1 (en) 2011-10-05
    FR2852554A1 (en) 2004-09-24
    US7117789B2 (en) 2006-10-10
    EP1464490B8 (en) 2012-08-15

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