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EP2138305B1 - Printing machine - Google Patents

Printing machine Download PDF

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Publication number
EP2138305B1
EP2138305B1 EP09163618.3A EP09163618A EP2138305B1 EP 2138305 B1 EP2138305 B1 EP 2138305B1 EP 09163618 A EP09163618 A EP 09163618A EP 2138305 B1 EP2138305 B1 EP 2138305B1
Authority
EP
European Patent Office
Prior art keywords
drive
printing machine
reel
web portion
arms
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.)
Not-in-force
Application number
EP09163618.3A
Other languages
German (de)
French (fr)
Other versions
EP2138305A2 (en
EP2138305A3 (en
Inventor
François Dumenil
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.)
Machines Dubuit SAS
Original Assignee
Machines Dubuit SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Machines Dubuit SAS filed Critical Machines Dubuit SAS
Publication of EP2138305A2 publication Critical patent/EP2138305A2/en
Publication of EP2138305A3 publication Critical patent/EP2138305A3/en
Application granted granted Critical
Publication of EP2138305B1 publication Critical patent/EP2138305B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/08—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces
    • B41F17/14—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length
    • B41F17/20—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length on articles of uniform cross-section, e.g. pencils, rulers, resistors
    • B41F17/22—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length on articles of uniform cross-section, e.g. pencils, rulers, resistors by rolling contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B41F15/26—Supports for workpieces for articles with flat surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/10—Screen printing machines characterised by their constructional features
    • B41P2215/11—Registering devices
    • B41P2215/114—Registering devices with means for displacing the article

Definitions

  • the invention relates to a machine for printing fragile objects such as silicon plates with a thickness of less than one millimeter.
  • a silver layer is for example printed on these plates to make solar collectors.
  • the printing step is carried out in the middle of other processing steps so that the printing machine comprises at least one object conveying station, a printing station and an evacuation station of the separate object of the supply station.
  • the objects to be printed are conveyed to the station to bring the printing machine by a conveyor to bring.
  • the objects are moved from the conveyor to bring to the turret by a transfer device carried by the turret.
  • the objects are then moved by rotation of the turret towards the printing station, then towards the evacuation station of the turret.
  • the transfer device transports the object to an evacuation conveyor.
  • the turret thus carries a number of transfer devices and a number of drive means of these transfer devices equal to the number of stations of the machine. As the machine has a station, a printing station and an evacuation station, this number is at least three.
  • this type of machine is bulky.
  • this type of machine requires powerful turret rotation drive means because of the large weight thereof.
  • the object of the present invention is to propose a printing machine capable of printing fragile objects and not having the disadvantages mentioned above.
  • the subject of the invention is a printing machine comprising means for driving the conveyor belt portion of the transfer device, said drive means being carried by the chassis, each transfer device comprising a transmission element. releasable transmission with the training means.
  • the printing machine 2 comprises a frame 4, a turret 6 surrounded by workstations and rotation drive means of the turret not shown in the figures.
  • the frame 4 consists of a support 5 on which is fixed a housing 7 adapted to carry the turret 6 and to contain the drive means thereof.
  • the drive means are adapted to drive the turret in rotation about a vertical axis of rotation AA to move an object to be printed 8 from a supply station 10 to a printing station 12, the printing station 12 to an evacuation station 14 of the processing line of the object or to an evacuation station 16 of the deteriorated objects, and finally of the evacuation station 14 or 16 to the supply station 10 to retrieve a new object to to print.
  • the printing station 12 is equipped with a printing device 13, for example by serigraphy shown schematically on the figure 1 .
  • the evacuation station 14 is equipped with a camera 17 and image processing means adapted to check whether the object to be printed 8 has not been damaged or broken during the previous steps.
  • the printing machine 2 further comprises a conveyor 18 for supplying the articles to be printed 8, adjacent to the supply station 10, a conveyor 20 for evacuating the articles to be printed, adjacent to the evacuation station 14, and four devices 22 of transfer of the embedded objects in openings 23 of the turret 6.
  • the transfer devices 22 are able to transfer the objects of the supply conveyor 18 to the turret 6 and of the turret 6 to the evacuation conveyor 20, distinct from the supply conveyor 18.
  • the conveyors 18 and 20 extend linearly in the same direction Y to move the object to be printed to different processing machines of the processing chain.
  • the conveyors 18, 20 each comprise a stepping motor and two carrier strips 25 fixed in a loop and driven in displacement by the stepping motor.
  • the printing machine 2 further comprises a control unit 26 and two drive means 28 of the transfer devices 22 arranged at the supply station 10 and at the evacuation station 14.
  • the control unit 26 is able to control the rotation drive means of the turret 6, the feed conveyors 18 and discharge 20 and the drive means 28 of the transfer devices, as explained later.
  • control unit 26 is able to control the speed of rotation and the stop of the turret 6 at each station 12, 14 and 16, and the speed of movement of the carrier strips 25 of the conveyors 18, 20 so that this one equal to the speed of movement of the objects on the transfer devices 22.
  • the drive means 28 of the transfer devices are carried by the support 5 and are fixed relative thereto.
  • the drive means 28 comprise a box 30 and a connection support 32 provided with housings 34.
  • the drive means 28 further comprise a gear motor 36, means for converting the rotational movement of the output shaft of the gear motor into a translation movement of the connecting support 32 in a first horizontal direction Y and a jack pneumatic 38 adapted to move the connecting support 32 in a second vertical direction Z.
  • each transfer device 22 comprises a portion 40 of paper web capable of moving an object to be printed 8, a frame 42 for supporting the portion of strip 40 whose edges are intended to rest on the rim of the openings 23 of the turret 6, and a support plate 44 fixed to the frame 42 and extending in a vertical plane.
  • the support frame 42 is formed of four arms attached to each other to form a frame. According to the invention, the two arms parallel to a tangent to the turret 6, located at the transfer device, form support arms 46 of the band portion 40. These support arms 46 are inscribed in a first horizontal plane .
  • the band portion 40 is part of a longer band part of which is wound around a first coil 48 and the other part is wound around a second coil 50.
  • the first 48 and the second 50 coils are fixed to the plate 44 so that their axes are parallel to the support arm 46.
  • the band portion wrapped around the first coil 48 is an unworn band portion, i.e., a band portion for use in transporting the objects to be printed.
  • the band portion wrapped around the second coil 50 is a used band portion, i.e., a band portion that has already been used to convey objects to be printed.
  • the first coil 48 is equipped with an electromagnetic brake 52 illustrated on the figure 4 .
  • This brake 52 is able to block in rotation the first coil 48.
  • the control unit 26 is able to engage or disengage the brake 52.
  • the second spool 50 is provided with a free wheel 53 illustrated on the figure 5 so that it can pivot about its axis only in a winding direction E of the band.
  • a bell 54 is mounted to rotate with the second coil 50. This bell 54 is intended to allow the drive of the second coil 50 in the winding direction E to renew the band portion 40 when it is used.
  • the support plate 44 is equipped with the first, second and third sets of rollers 56, 58, 60, illustrated in FIGS. Figures 3 to 5 .
  • the rollers 56 of the first set of rollers are fixed to the plate 44 parallel to the support arms 46 and in a second plane disposed below the first plane of the support frame 42.
  • rollers 58 of the second set are fixed to the plate 44 parallel to the support arms 46 and in a third plane disposed below the second plane.
  • rollers 60 of the third set are carried by the plate 44 so that they are arranged parallel to the support arm 46 and inscribed in a fourth plane disposed between the second and third planes.
  • the portion of the conveyor belt 40 is successively engaged around the set of rollers 56 carried by the plate 44, the set of rollers 60 carried by the muffle 64 and the set of rollers 58 carried by the plate 44.
  • the portion of the conveyor belt 40 is in contact with the outer face of the rollers 58 of the second set, the inner face of the rollers 60 of the third set and the outer face of the rollers 56 of the first set.
  • the band portion 40 is held taut between the sets of rollers 56, 58, 60 and the support arms 46.
  • the term “inner” is considered to mean an inwardly facing face of the transfer device 22 and the term “outer” is intended to refer to an outward facing face of the transfer device 22.
  • rollers 60 of the third set are articulated around two arms 62 of a muffle 64, hereinafter referred to as the drive arm of the band portion 40.
  • the muffle 64 is provided with a slider 66 adapted to slide in a rail 68 fixed to the plate 44 and extending in a direction perpendicular to the support arm 46 in a plane parallel to the plane of the arms 46.
  • the slider 66 is linked by a screw connection 70 to a transmission element 72 visible on the Figures 9 and 10 .
  • the transmission element 72 comprises a rectangular support plate 74 provided with a rod 76 for connection to the screwing means 70 of the muffle, and a slide 78 guided in a rail 80 extending along the lower edge of the support plate 44.
  • the housings 34 of the connection support 32 of the drive means are adapted to receive the columns 90, 92 and to move them in a direction parallel to the rail 80.
  • An upper block 82 and a lower block 84 are fixed at the top and bottom of the support plate 74.
  • Each block 82, 84 has two vertical openings 86, 88 through which two columns 90, 92 are guided.
  • a connecting piece 94 is mounted integral with the upper end of the columns 90 and 92.
  • the piece 94 is able to bear on the upper block 82, when the posts 90, 92 are not carried by the connecting support 32 .
  • the piece 94 is provided with a locking roller 96 passing through an opening 98 of the plate 74.
  • the locking roller 96 is adapted to move along a bracket 100 fixed to the support plate 44 and visible on the figure 2 .
  • the cleat 100 comprises two notches 102 in which the locking roller 96 is adapted to be housed in order to block the transmission element 72 in the Y direction and thus block the muffle 64 and thus the drive arms 62 in displacement.
  • the notches are formed at a position corresponding to the end position of the transmission element 72.
  • a ring 104 is fixed to the column 90 so as to be disposed between the upper block 82 and the lower block 84.
  • a compression spring 106 is fixed integrally to the upper block 82 and the ring 104. This spring 106 is adapted to pull the column 90 to the lower block 84 and thus, to bring the locking roller 96 into a notch 102.
  • the transfer device 22 further comprises a detector of the number of movements of the drive arms 62, not shown in the figures.
  • the printing machine 2 further comprises a device 107 for driving the second coil 50 illustrated on the figure 11 .
  • the drive device 107 is disposed at the evacuation station 16 and is carried by the support 5.
  • It comprises a wheel 108 driving rotation of the bell 54 of the transfer device, a gear motor 110 adapted to drive the wheel 108 and a pneumatic cylinder 112 adapted to lift the wheel 108 so that it comes into contact with the bell 54.
  • the control unit 26 is able to control the gear motor 110 and the jack 112 to drive in rotation the second coil 50 in a winding direction, as well as the electromagnetic brake 52 to allow the unwinding of the first coil 48, when the number of movements of the driving arms 62 exceeds a defined threshold or when the paper web 40 is soiled or damaged.
  • the printing machine 2 further comprises drive means 114 of the transfer devices 22.
  • the drive means 114 comprise a pneumatic cylinder 116 capable of displacing the connection support 32 in the Y direction and a pneumatic cylinder that is not visible in the figures, that is suitable for moving. the connection support 32 in the direction Z.
  • the drive means 114 are controlled by the control unit 26 so as to be actuated only when the object is broken.
  • an object to be printed 8 is brought by the supply conveyor 18 to the transfer device 22 disposed at the supply station 10.
  • the control unit 26 controls the pneumatic cylinder 38 so that it lifts the connection support 32.
  • the housings 34 engage around the columns 90, 92. Then, during the vertical displacement of the connecting support 32 in a second path, the locking roller 96 integral balusters 90, 92 are expelled from the notch 102.
  • control unit 26 controls the gear motor 36 so that the connecting support 32 is moved in the Y direction.
  • the connecting support 32 moves the balusters 90, 92 in the Y direction and thus the arms driving 62 of the muffle via the rod 76.
  • the displacement of the drive arms 62 in the fourth plane causes the displacement of the band portion 40 between the arms of the support 46 and around the rollers 60.
  • the speed of movement of the band portion 40 is twice the speed of movement of the driving arms 62 of the mitt.
  • the object is moved from the supply conveyor 10 to the transfer device 22 without being broken and without this object moving relative to the conveyor belts 25 and the feed conveyor 18, which allows the object to be accurately positioned on the web portion 40 for printing.
  • connection support 32 When the connection support 32 is at the end of travel, the control unit 26 controls the pneumatic cylinder 38 so that it lowers.
  • the posts 90, 92 driven by their own weight and the action of the spring 106, are lowered.
  • the locking roller 96 secured to the columns also descends and snaps into the notch 102 so that the transmission element 72 is locked in translation along the Y axis.
  • control unit 26 controls the rotational movement of the turret 6 so that the transfer device 22 carrying the object 8 is brought to the printing station 12.
  • the object to be printed is then printed.
  • control unit 26 controls the drive means of the turret 6 so that the transfer device 22 carrying the object is moved to the evacuation station 14.
  • control unit 26 controls the pneumatic cylinder 38 of the evacuation station 14 to lift the connection support 32 and connect it to the balusters 90, 92, and finally to remove the roller locking 96 of the notch 102.
  • control unit 26 controls the gear motor 36 of the drive means 28 arranged at the evacuation station 14 so that the connecting support 32 is moved in a direction opposite to the direction Y, so that the object to be printed 8 is transferred from the transfer device 22 to the carrier strips 25 of the evacuation conveyor 20.
  • control unit 26 does not control the pneumatic cylinder 38 and the geared motor 36 of the evacuation station 14.
  • control unit 26 controls the rotation of the turret 6 so that the transfer device 22 is brought to the evacuation station 16.
  • control unit 26 controls the pneumatic cylinders 38 drive means 114 arranged at the evacuation station 16 so that the transfer device moves the damaged object in a waste container not shown.
  • the band portion 40 is renewed to prevent tearing thereof or to prevent it from dirtying the objects to be printed.
  • control unit 26 controls the electromagnetic brake 52 so that it allows the rotation of the first coil 48.
  • control unit 26 controls the jack 112 to raise the drive wheel 108 to that it comes into contact with the bell 54.
  • control unit 26 controls the gear motor 110 for rotating the wheel 108.
  • the wheel 108 rotates the bell 54 and the second coil 50 integral with the bell 54 until the entire previously used band portion 40 is wrapped around the second coil 50.
  • the printing machine according to the invention makes it possible to transport objects to print thin (less than one millimeter) without breaking them without using a strip of paper, the strip of paper being changed only when the paper is worn or defiled.
  • the driving arms 62 move the band portion 40 at a speed and at an acceleration equal to the speed and acceleration of the carrier strips 25 of the conveyors 18, 20 so that the object 8 is not not damaged during its passage from a conveyor to a transfer device 22.
  • the drive means 28 of the portion of the conveyor belt 40 are not carried by the turret 6, which reduces the weight and bulk of the latter.
  • the portion of the conveyor belt 40 is displaced. always at the same speed and on the same path.
  • this speed of movement of the conveyor belt is easily modifiable.
  • the drive means 114 do not comprise a control device. They are able to move the band portion 40 at any speed independent of the speed of movement of the carrier strips 25. As a result, the printing machine 2 has a lower cost than the printing machines of the state of the art. .
  • the displacement of the band portion 40 is adjusted to exactly match the displacement of the carrier strips 25, which are displaced sequentially by the stepper motor.
  • the objects do not rub against the band portion 40, do not slide, do not pivot on themselves during their passage from the conveyor 18 to the transfer device 22.
  • these objects can be positioned accurately and accurately. constant on the band portion 40 for printing.
  • the objects are positioned with constant spacing on the discharge conveyor 20, this spacing being equal to the spacing between the objects on the conveyor 18. The respect of this interdistance between the objects facilitates the subsequent and automatic processing thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Discharge By Other Means (AREA)

Description

La présente invention concerne une machine à imprimer du type comportant :

  • un châssis ;
  • une tourelle portée par le châssis, ladite tourelle étant entraînée en rotation par rapport au châssis autour d'un axe de rotation A-A, pour déplacer un objet à imprimer entre au moins un poste d'impression, un poste d'amenée et/ou d'évacuation de l'objet à imprimer ;
  • un convoyeur porté par le châssis, le convoyeur étant propre à amener ou à évacuer l'objet à imprimer au poste d'amenée et/ou d'évacuation ;
  • un dispositif de transfert porté par la tourelle, ledit dispositif de transfert comportant une portion de bande transporteuse apte à déplacer l'objet à imprimer entre le convoyeur et la tourelle ; et
  • un dispositif d'impression propre à imprimer l'objet à imprimer, ledit dispositif d'impression étant disposé au poste d'impression.
The present invention relates to a printing machine of the type comprising:
  • a chassis ;
  • a turret carried by the frame, said turret being rotated relative to the frame about an axis of rotation AA, for moving an object to be printed between at least one printing station, a feed station and / or evacuation of the object to be printed;
  • a conveyor carried by the frame, the conveyor being adapted to convey or evacuate the object to be printed at the supply and / or evacuation station;
  • a transfer device carried by the turret, said transfer device comprising a conveyor belt portion adapted to move the object to be printed between the conveyor and the turret; and
  • a printing device adapted to print the object to be printed, said printing device being arranged at the printing station.

En particulier, l'invention concerne une machine à imprimer des objets fragiles tels que des plaques de Silicium d'une épaisseur de moins d'un millimètre.In particular, the invention relates to a machine for printing fragile objects such as silicon plates with a thickness of less than one millimeter.

Une couche d'argent est par exemple imprimée sur ces plaques pour réaliser des capteurs solaires.A silver layer is for example printed on these plates to make solar collectors.

Ces plaques sont traitées par différentes machines disposées les unes derrière les autres dans une chaîne linéaire de traitement. L'étape d'impression est réalisée au milieu d'autres étapes de traitement de sorte que la machine à imprimer comporte au moins un poste d'amener de l'objet, un poste d'impression et un poste d'évacuation de l'objet distinct du poste d'amenée.These plates are processed by different machines arranged behind each other in a linear process chain. The printing step is carried out in the middle of other processing steps so that the printing machine comprises at least one object conveying station, a printing station and an evacuation station of the separate object of the supply station.

Dans ce type de machine à imprimer les objets à imprimer sont acheminés au poste d'amener de la machine à imprimer par un convoyeur d'amener. Les objets sont déplacés du convoyeur d'amener vers la tourelle par un dispositif transfert porté par la tourelle. Les objets sont ensuite déplacés par rotation de la tourelle vers le poste d'impression, puis vers le poste d'évacuation de la tourelle. Enfin, le dispositif de transfert transporte l'objet vers un convoyeur d'évacuation. La tourelle porte donc un nombre de dispositifs de transfert et un nombre de moyens d'entraînement de ces dispositifs de transfert égal au nombre de postes de la machine. Comme la machine comporte un poste d'amener, un poste d'impression et un poste d'évacuation, ce nombre est au minimum égal à trois.In this type of printing machine the objects to be printed are conveyed to the station to bring the printing machine by a conveyor to bring. The objects are moved from the conveyor to bring to the turret by a transfer device carried by the turret. The objects are then moved by rotation of the turret towards the printing station, then towards the evacuation station of the turret. Finally, the transfer device transports the object to an evacuation conveyor. The turret thus carries a number of transfer devices and a number of drive means of these transfer devices equal to the number of stations of the machine. As the machine has a station, a printing station and an evacuation station, this number is at least three.

En conséquence, ce type de machine est encombrant. De plus, ce type de machine requiert des moyens d'entraînement en rotation de la tourelle puissants en raison du poids important de celle-ci.As a result, this type of machine is bulky. In addition, this type of machine requires powerful turret rotation drive means because of the large weight thereof.

Le document US 2008/034990 A1 divulgue une machine ayant au moins les caractéristiques du préambule de la revendication 1.The document US 2008/034990 A1 discloses a machine having at least the features of the preamble of claim 1.

La présente invention a pour but de proposer une machine à imprimer propre à imprimer des objets fragiles et ne présentant pas les inconvénients mentionnés ci-dessus.The object of the present invention is to propose a printing machine capable of printing fragile objects and not having the disadvantages mentioned above.

A cet effet, l'invention a pour objet une machine à imprimer comportant des moyens d'entraînement de la portion de bande transporteuse du dispositif de transfert, lesdits moyens d'entraînement étant portés par le châssis, chaque dispositif de transfert comportant un élément de transmission libérable avec les moyens d'entraînement.For this purpose, the subject of the invention is a printing machine comprising means for driving the conveyor belt portion of the transfer device, said drive means being carried by the chassis, each transfer device comprising a transmission element. releasable transmission with the training means.

Suivant des modes particuliers de réalisation, la machine comporte l'une ou plusieurs des caractéristiques suivantes, prises isolément ou en combinaison :

  • le dispositif de transfert comprend :
    • une platine de support,
    • deux bras de support de la portion de bande transporteuse fixés à la platine de support, lesdits bras de support étant parallèles,
    • deux bras d'entraînement en déplacement de la portion de bande transporteuse, les bras d'entraînement étant propres à se déplacer par rapport à la platine de support, et
    • des moyens de retenu aptes à maintenir la portion de bande transporteuse tendue entre les bras de support et les bras d'entraînement, la portion de bande transporteuse étant en contact avec une face extérieure de chaque bras de support et avec une face intérieure de chaque bras d'entraînement ;
  • le convoyeur comprend au moins une bande porteuse de l'objet à imprimer, la machine comportant une unité de pilotage du convoyeur et des moyens d'entraînement, l'unité de pilotage étant apte à asservir la vitesse et l'accélération des bras d'entraînement à la vitesse et à l'accélération de la bande porteuse ;
  • l'unité de pilotage est propre à commander une vitesse de déplacement des bras d'entraînement égale à la moitié de la vitesse de déplacement de la bande porteuse ;
  • le dispositif de transfert comporte un dispositif de renouvellement de la portion de bande transporteuse comportant :
    • une première bobine fixée à la platine de support, une portion de bande destinée à transporter les objets à imprimer, étant enroulée autour de la première bobine,
    • une seconde bobine fixée à la platine de support, une portion de bande ayant transporté les objets à imprimer étant enroulée autour de la seconde bobine ; la portion de bande enroulée sur la première bobine, la portion de bande transporteuse et la portion de bande enroulée sur la seconde bobine formant une bande continue de papier, et dans laquelle
    • les moyens de retenu sont propres à être débloqués pour autoriser la rotation de la première bobine au moins dans un sens de déroulement, et la rotation de la seconde bobine au moins dans un sens d'enroulement pour renouveler la portion de bande transporteuse ;
  • les moyens de retenue comprennent un frein électromagnétique équipant la première bobine et une roue libre équipant la seconde bobine ;
  • l'élément de transmission est lié aux bras d'entraînement, et dans laquelle les moyens d'entraînement comportent :
    • un élément de liaison apte à être connecté à l'élément de transmission,
    • des premiers moyens de déplacement propres à déplacer l'élément de liaison selon une première direction sur une première trajectoire pour connecter et déconnecter l'élément de liaison à l'élément de transmission, et
    • des seconds moyens de déplacement propres à entraîner en déplacement l'élément de liaison selon une seconde direction distincte de la première direction, pour déplacer les bras d'entraînement selon un mouvement de va et vient lorsque l'élément de liaison est connecté à l'élément de transmission ;
  • l'élément de transmission comporte :
    • une plaque de support propre à se déplacer par rapport à la platine de support selon la seconde direction, et
    • au moins une colonnette portée par la plaque de support, la ou chaque colonnette étant propre à se déplacer par rapport à la platine de support selon la première et la seconde directions ;
  • le dispositif de transfert comporte des moyens de verrouillage aptes à verrouiller les bras d'entraînement en déplacement selon la seconde direction, lorsque les bras d'entraînement sont dans au moins une position de fin de course du mouvement de va et vient ;
  • les moyens de verrouillage comportent :
    • un galet de verrouillage solidaire de la ou chaque colonnette,
    • au moins encoche formée sur la platine de support et propre à recevoir le galet de verrouillage, et
    • des moyens élastiques aptes à amener le galet de verrouillage dans la ou chaque encoche, lesdits moyens élastiques étant fixés à la colonnette et à la plaque de support ;
  • les premiers moyens de déplacement sont propres à déplacer l'élément de liaison le long d'une seconde trajectoire en début et/ou en fin de course du mouvement de va-et-vient des bras d'entraînement pour expulser le galet de verrouillage de la ou chaque encoche ;
  • la machine comporte un dispositif d'entraînement en rotation de la seconde bobine dans un sens d'enroulement, le dispositif d'entraînement étant solidaire du châssis,
  • le dispositif de transfert comporte :
    • un détecteur du nombre de mouvements de va-et-vient des bras d'entraînement, et
    • une unité de pilotage apte à commander le dispositif d'entraînement de la seconde bobine et le déblocage des moyens de retenu, lorsque le nombre détecté dépasse un seuil défini.
According to particular embodiments, the machine comprises one or more of the following features, taken separately or in combination:
  • the transfer device comprises:
    • a support plate,
    • two support arms of the conveyor belt portion fixed to the support plate, said support arms being parallel,
    • two drive arms moving the portion of the conveyor belt, the drive arms being adapted to move relative to the support plate, and
    • retaining means adapted to hold the portion of conveyor belt stretched between the support arms and the drive arms, the conveyor belt portion being in contact with an outer face of each support arm and with an inner face of each arm training;
  • the conveyor comprises at least one carrier strip of the object to be printed, the machine comprising a drive unit of the conveyor and drive means, the control unit being able to control the speed and the acceleration of the arms of training in the speed and acceleration of the carrier tape;
  • the control unit is adapted to control a speed of movement of the drive arms equal to half the speed of movement of the carrier band;
  • the transfer device comprises a device for renewing the portion of the conveyor belt comprising:
    • a first coil attached to the support plate, a portion of tape for transporting the objects to be printed, being wound around the first coil,
    • a second coil attached to the support plate, a tape portion having transported the objects to be printed being wound around the second coil; the tape portion wound on the first reel, the conveyor belt portion and the tape portion wound on the second reel forming a continuous web of paper, and wherein
    • the retaining means are adapted to be unlocked to allow the rotation of the first reel at least in a direction of unwinding, and the rotation of the second reel at least in a winding direction to renew the portion of the conveyor belt;
  • the retaining means comprise an electromagnetic brake equipping the first coil and a free wheel equipping the second coil;
  • the transmission element is connected to the drive arms, and wherein the drive means comprises:
    • a connecting element adapted to be connected to the transmission element,
    • first moving means adapted to move the link member in a first direction on a first path for connecting and disconnecting the link member to the transmission member, and
    • second displacement means adapted to move the connecting element in a second direction distinct from the first direction, to move the arms driving a movement back and forth when the connecting element is connected to the transmission element;
  • the transmission element comprises:
    • a support plate adapted to move relative to the support plate in the second direction, and
    • at least one column carried by the support plate, the or each column being adapted to move relative to the support plate in the first and second directions;
  • the transfer device comprises locking means adapted to lock the drive arms moving in the second direction, when the drive arms are in at least one end position of the reciprocating movement;
  • the locking means comprise:
    • a locking roller secured to the or each column,
    • at least one notch formed on the support plate and adapted to receive the locking roller, and
    • elastic means adapted to bring the locking roller into the or each slot, said elastic means being fixed to the column and the support plate;
  • the first moving means are adapted to move the connecting element along a second path at the beginning and / or at the end of the stroke of the reciprocating movement of the drive arms in order to expel the locking roller from the or each notch;
  • the machine comprises a device for driving the second bobbin in a winding direction, the driving device being secured to the chassis,
  • the transfer device comprises:
    • a detector for the number of back and forth movements of the driving arms, and
    • a control unit adapted to control the drive device of the second coil and the release of the holding means, when the detected number exceeds a defined threshold.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels :

  • la figure 1 est une vue en perspective d'une face de la machine à imprimer selon l'invention ;
  • la figure 2 est une vue en perspective du dispositif de transfert utilisé dans la machine à imprimer selon l'invention ;
  • la figure 3 est une vue en coupe longitudinale du dispositif de transfert selon un plan de coupe III-III illustré sur la figure 2 ;
  • la figure 4 est une vue en coupe transversale du dispositif de transfert selon un plan de coupe IV-IV illustré sur la figure 3 ;
  • la figure 5 est une vue en coupe transversale du dispositif de transfert selon un plan de coupe V-V illustré sur la figure 3 ;
  • la figure 6 est une vue de dessus d'un moufle utilisé dans le dispositif de transfert illustré sur la figure 3 ;
  • la figure 7 est une vue de face du dispositif de transfert illustré sur la figure 2;
  • la figure 8 est une vue de face d'un élément de transmission du dispositif de transfert ;
  • la figure 9 est une vue en coupe de l'élément de transmission illustré sur la figure 8 selon un plan de coupe IX-IX illustré sur la figure 8 ;
  • la figure 10 est une vue en coupe de l'élément de transmission illustré sur la figure 8 selon un plan de coupe X-X illustré sur la figure 8 ; et
  • la figure 11 est une vue en perspective de la face de la machine à imprimer opposée à la face illustrée sur la figure 1.
The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawings, in which:
  • the figure 1 is a perspective view of a face of the printing machine according to the invention;
  • the figure 2 is a perspective view of the transfer device used in the printing machine according to the invention;
  • the figure 3 is a longitudinal sectional view of the transfer device according to a sectional plane III-III illustrated in FIG. figure 2 ;
  • the figure 4 is a cross-sectional view of the transfer device according to a sectional plane IV-IV shown in FIG. figure 3 ;
  • the figure 5 is a cross-sectional view of the transfer device according to a VV sectional plane shown in FIG. figure 3 ;
  • the figure 6 is a top view of a muffle used in the transfer device shown in FIG. figure 3 ;
  • the figure 7 is a front view of the transfer device illustrated on the figure 2 ;
  • the figure 8 is a front view of a transmission element of the transfer device;
  • the figure 9 is a sectional view of the transmission element shown in FIG. figure 8 according to an IX-IX cutting plane shown on the figure 8 ;
  • the figure 10 is a sectional view of the transmission element shown in FIG. figure 8 according to a sectional plan XX illustrated on the figure 8 ; and
  • the figure 11 is a perspective view of the face of the printing machine opposite to the face illustrated on the figure 1 .

En référence à la figure 1, la machine à imprimer 2 comporte un châssis 4, une tourelle 6 entourée de postes de travail et des moyens d'entraînement en rotation de la tourelle non représentés sur les figures.With reference to the figure 1 , the printing machine 2 comprises a frame 4, a turret 6 surrounded by workstations and rotation drive means of the turret not shown in the figures.

Le châssis 4 est constitué d'un support 5 sur lequel est fixé un boîtier 7 propre à porter la tourelle 6 et à contenir les moyens d'entraînement de celle-ci.The frame 4 consists of a support 5 on which is fixed a housing 7 adapted to carry the turret 6 and to contain the drive means thereof.

Les moyens d'entraînement sont aptes à entraîner la tourelle en rotation autour d'un axe de rotation vertical A-A pour déplacer un objet à imprimer 8 d'un poste d'amenée 10 vers un poste d'impression 12, du poste d'impression 12 vers un poste d'évacuation 14 de la chaîne de traitement de l'objet ou vers un poste d'évacuation 16 des objets détériorés, et enfin du poste d'évacuation 14 ou 16 vers le poste d'amenée 10 pour récupérer un nouvel objet à imprimer.The drive means are adapted to drive the turret in rotation about a vertical axis of rotation AA to move an object to be printed 8 from a supply station 10 to a printing station 12, the printing station 12 to an evacuation station 14 of the processing line of the object or to an evacuation station 16 of the deteriorated objects, and finally of the evacuation station 14 or 16 to the supply station 10 to retrieve a new object to to print.

Le poste d'impression 12 est équipé d'un dispositif d'impression 13 par exemple par sérigraphie représenté schématiquement sur la figure 1.The printing station 12 is equipped with a printing device 13, for example by serigraphy shown schematically on the figure 1 .

Le poste d'évacuation 14 est équipé d'une caméra 17 et de moyens de traitement d'image propres à vérifier si l'objet à imprimer 8 n'a pas été détérioré ou cassé lors des étapes précédentes.The evacuation station 14 is equipped with a camera 17 and image processing means adapted to check whether the object to be printed 8 has not been damaged or broken during the previous steps.

La machine à imprimer 2 comporte en outre un convoyeur 18 d'amenée des objets à imprimer 8, adjacent au poste d'amenée 10, un convoyeur 20 d'évacuation des objets à imprimer, adjacent au poste d'évacuation 14, et quatre dispositifs 22 de transfert des objets encastrés dans des ouvertures 23 de la tourelle 6.The printing machine 2 further comprises a conveyor 18 for supplying the articles to be printed 8, adjacent to the supply station 10, a conveyor 20 for evacuating the articles to be printed, adjacent to the evacuation station 14, and four devices 22 of transfer of the embedded objects in openings 23 of the turret 6.

Les dispositifs de transfert 22 sont aptes à transférer les objets du convoyeur d'amenée 18 vers la tourelle 6 et de la tourelle 6 vers le convoyeur d'évacuation 20, distinct du convoyeur d'amenée 18.The transfer devices 22 are able to transfer the objects of the supply conveyor 18 to the turret 6 and of the turret 6 to the evacuation conveyor 20, distinct from the supply conveyor 18.

Les convoyeurs 18 et 20 s'étendent linéairement selon la même direction Y pour déplacer l'objet à imprimer vers différentes machines de traitement de la chaîne de traitement.The conveyors 18 and 20 extend linearly in the same direction Y to move the object to be printed to different processing machines of the processing chain.

Les convoyeurs 18, 20 comportent chacun un moteur pas à pas et deux bandes porteuses 25 fixées en boucle et entraînées en déplacement par le moteur pas à pas.The conveyors 18, 20 each comprise a stepping motor and two carrier strips 25 fixed in a loop and driven in displacement by the stepping motor.

La machine à imprimer 2 comporte en outre une unité de pilotage 26 et deux moyens d'entraînement 28 des dispositifs de transfert 22 disposés au poste d'amenée 10 et au poste d'évacuation 14.The printing machine 2 further comprises a control unit 26 and two drive means 28 of the transfer devices 22 arranged at the supply station 10 and at the evacuation station 14.

L'unité de pilotage 26 est propre à commander les moyens d'entraînement en rotation de la tourelle 6, les convoyeurs d'amenée 18 et d'évacuation 20 et les moyens d'entraînement 28 des dispositifs de transfert, comme explicité ultérieurement.The control unit 26 is able to control the rotation drive means of the turret 6, the feed conveyors 18 and discharge 20 and the drive means 28 of the transfer devices, as explained later.

En particulier, l'unité de pilotage 26 est propre à commander la vitesse de rotation et l'arrêt de la tourelle 6 à chaque poste 12, 14 et 16, et la vitesse de déplacement des bandes porteuses 25 des convoyeurs 18, 20 afin que celle-ci soit égale à la vitesse de déplacement des objets sur les dispositifs de transfert 22.In particular, the control unit 26 is able to control the speed of rotation and the stop of the turret 6 at each station 12, 14 and 16, and the speed of movement of the carrier strips 25 of the conveyors 18, 20 so that this one equal to the speed of movement of the objects on the transfer devices 22.

Les moyens d'entraînement 28 des dispositifs de transfert sont portés par le support 5 et sont fixes par rapport à celui-ci. Les moyens d'entraînement 28 comportent une caisse 30 et un support de liaison 32 munis de logements 34.The drive means 28 of the transfer devices are carried by the support 5 and are fixed relative thereto. The drive means 28 comprise a box 30 and a connection support 32 provided with housings 34.

Les moyens d'entraînement 28 comportent en outre un moto réducteur 36, des moyens de conversion du mouvement de rotation de l'arbre de sortie du moto réducteur en un mouvement de translation du support de liaison 32 selon une première direction horizontale Y et un vérin pneumatique 38 propre à déplacer le support de liaison 32 selon une seconde direction verticale Z.The drive means 28 further comprise a gear motor 36, means for converting the rotational movement of the output shaft of the gear motor into a translation movement of the connecting support 32 in a first horizontal direction Y and a jack pneumatic 38 adapted to move the connecting support 32 in a second vertical direction Z.

En référence aux figures 2 et 3, chaque dispositif de transfert 22 comporte une portion 40 de bande de papier apte à déplacer un objet à imprimer 8, un cadre 42 de support de la portion de bande 40 dont les bords sont destinés à venir en appui sur le rebord des ouvertures 23 de la tourelle 6, et une platine de support 44 fixée au cadre 42 et s'étendant dans un plan vertical.With reference to figures 2 and 3 each transfer device 22 comprises a portion 40 of paper web capable of moving an object to be printed 8, a frame 42 for supporting the portion of strip 40 whose edges are intended to rest on the rim of the openings 23 of the turret 6, and a support plate 44 fixed to the frame 42 and extending in a vertical plane.

Le cadre de support 42 est formé de quatre bras fixés les uns aux autres pour former un cadre. Selon l'invention, les deux bras parallèles à une tangente à la tourelle 6, située au niveau du dispositif de transfert, forment des bras 46 de support de la portion de bande 40. Ces bras de support 46 sont inscrits dans un premier plan horizontal.The support frame 42 is formed of four arms attached to each other to form a frame. According to the invention, the two arms parallel to a tangent to the turret 6, located at the transfer device, form support arms 46 of the band portion 40. These support arms 46 are inscribed in a first horizontal plane .

La portion de bande 40 fait partie d'une bande plus longue dont une partie est enroulée autour d'une première bobine 48 et dont l'autre partie est enroulée autour d'une seconde bobine 50.The band portion 40 is part of a longer band part of which is wound around a first coil 48 and the other part is wound around a second coil 50.

La première 48 et la seconde 50 bobines sont fixées à la platine 44 de manière à ce que leurs axes soient parallèles au bras de support 46.The first 48 and the second 50 coils are fixed to the plate 44 so that their axes are parallel to the support arm 46.

La partie de bande enroulée autour de la première bobine 48 est une partie de bande non usagée, c'est-à-dire une partie de bande destinée à être utilisée pour transporter les objets à imprimer.The band portion wrapped around the first coil 48 is an unworn band portion, i.e., a band portion for use in transporting the objects to be printed.

La partie de bande enroulée autour de la seconde bobine 50 est une partie de bande usagée, c'est-à-dire une partie de bande qui a déjà été utilisée pour transporter des objets à imprimer.The band portion wrapped around the second coil 50 is a used band portion, i.e., a band portion that has already been used to convey objects to be printed.

La première bobine 48 est équipée d'un frein électromagnétique 52 illustré sur la figure 4. Ce frein 52 est apte à bloquer en rotation la première bobine 48.The first coil 48 is equipped with an electromagnetic brake 52 illustrated on the figure 4 . This brake 52 is able to block in rotation the first coil 48.

L'unité de pilotage 26 est apte à enclencher ou désenclencher le frein 52.The control unit 26 is able to engage or disengage the brake 52.

La seconde bobine 50 est munie d'une roue libre 53 illustrée sur la figure 5 de telle sorte qu'elle ne puisse pivoter autour de son axe que dans un sens d'enroulement E de la bande.The second spool 50 is provided with a free wheel 53 illustrated on the figure 5 so that it can pivot about its axis only in a winding direction E of the band.

Une cloche 54 est montée solidaire en rotation de la seconde bobine 50. Cette cloche 54 est destinée à permettre l'entraînement de la seconde bobine 50 dans le sens d'enroulement E pour renouveler la portion de bande 40 lorsque celle-ci est usagée.A bell 54 is mounted to rotate with the second coil 50. This bell 54 is intended to allow the drive of the second coil 50 in the winding direction E to renew the band portion 40 when it is used.

La platine de support 44 est équipée des premier, deuxième et troisième jeux de rouleaux 56, 58, 60, illustrés sur les figures 3 à 5.The support plate 44 is equipped with the first, second and third sets of rollers 56, 58, 60, illustrated in FIGS. Figures 3 to 5 .

Les rouleaux 56 du premier jeu de rouleaux sont fixés à la platine 44 parallèlement aux bras de support 46 et dans un deuxième plan disposé en dessous du premier plan du cadre de support 42.The rollers 56 of the first set of rollers are fixed to the plate 44 parallel to the support arms 46 and in a second plane disposed below the first plane of the support frame 42.

Les rouleaux 58 du deuxième jeu sont fixés à la platine 44 parallèlement aux bras de support 46 et dans un troisième plan disposé en dessous du deuxième plan.The rollers 58 of the second set are fixed to the plate 44 parallel to the support arms 46 and in a third plane disposed below the second plane.

Les rouleaux 60 du troisième jeu sont portés par la platine 44 de manière à ce que ceux-ci soient disposés parallèlement au bras de support 46 et inscrits dans un quatrième plan disposé entre le deuxième et le troisième plans.The rollers 60 of the third set are carried by the plate 44 so that they are arranged parallel to the support arm 46 and inscribed in a fourth plane disposed between the second and third planes.

La portion de bande transporteuse 40 est engagée successivement autour du jeu de rouleaux 56 portés par la platine 44, du jeu de rouleaux 60 portés par le moufle 64 et du jeu de rouleaux 58 portés par la platine 44.The portion of the conveyor belt 40 is successively engaged around the set of rollers 56 carried by the plate 44, the set of rollers 60 carried by the muffle 64 and the set of rollers 58 carried by the plate 44.

En particulier, la portion de bande transporteuse 40 est en contact avec la face extérieure des rouleaux 58 du deuxième jeu, la face intérieure des rouleaux 60 du troisième jeu et la face extérieure des rouleaux 56 du premier jeu.In particular, the portion of the conveyor belt 40 is in contact with the outer face of the rollers 58 of the second set, the inner face of the rollers 60 of the third set and the outer face of the rollers 56 of the first set.

En particulier, la portion de bande 40 est maintenue tendue entre les jeux de rouleaux 56, 58, 60 et les bras de support 46.In particular, the band portion 40 is held taut between the sets of rollers 56, 58, 60 and the support arms 46.

Selon la présente invention, le terme « intérieure » est considéré comme signifiant une face disposée vers l'intérieur du dispositif de transfert 22 et le terme « extérieure » est considéré comme désignant une face dirigée vers l'extérieur du dispositif de transfert 22.According to the present invention, the term "inner" is considered to mean an inwardly facing face of the transfer device 22 and the term "outer" is intended to refer to an outward facing face of the transfer device 22.

En référence à la figure 6, les rouleaux 60 du troisième jeu sont articulés autour de deux bras 62 d'un moufle 64, ci-après appelés bras d'entraînement de la portion de bande 40.With reference to the figure 6 , the rollers 60 of the third set are articulated around two arms 62 of a muffle 64, hereinafter referred to as the drive arm of the band portion 40.

Le moufle 64 est muni d'un coulisseau 66 propre à coulisser dans un rail 68 fixé à la platine 44 et s'étendant selon une direction perpendiculaire au bras de support 46 dans un plan parallèle au plan des bras 46.The muffle 64 is provided with a slider 66 adapted to slide in a rail 68 fixed to the plate 44 and extending in a direction perpendicular to the support arm 46 in a plane parallel to the plane of the arms 46.

Le coulisseau 66 est lié par une liaison par vissage 70 à un élément de transmission 72 visible sur les figures 9 et 10.The slider 66 is linked by a screw connection 70 to a transmission element 72 visible on the Figures 9 and 10 .

En référence aux figures 2 et 7 à 10, l'élément de transmission 72 comporte une plaque de support 74 rectangulaire munie d'une tige 76 de raccordement aux moyens de vissage 70 du moufle, et d'un coulisseau 78 guidé dans un rail 80 s'étendant le long de la tranche inférieure de la platine de support 44.With reference to figures 2 and 7 to 10 , the transmission element 72 comprises a rectangular support plate 74 provided with a rod 76 for connection to the screwing means 70 of the muffle, and a slide 78 guided in a rail 80 extending along the lower edge of the support plate 44.

Les logements 34 du support de liaison 32 des moyens d'entraînement sont propres à recevoir les colonnettes 90, 92 et à les déplacer selon une direction parallèle au rail 80.The housings 34 of the connection support 32 of the drive means are adapted to receive the columns 90, 92 and to move them in a direction parallel to the rail 80.

Un bloc supérieur 82 et un bloc inférieur 84 sont fixés en haut et en bas de la plaque de support 74. Chaque bloc 82, 84 présente deux ouvertures 86, 88 traversantes verticales, dans lesquelles deux colonnettes 90, 92 sont guidées.An upper block 82 and a lower block 84 are fixed at the top and bottom of the support plate 74. Each block 82, 84 has two vertical openings 86, 88 through which two columns 90, 92 are guided.

Une pièce de liaison 94 est montée solidaire de l'extrémité supérieure des colonnettes 90 et 92. La pièce 94 est propre à venir en appui sur le bloc supérieur 82, lorsque les colonnettes 90, 92 ne sont pas portées par le support de liaison 32.A connecting piece 94 is mounted integral with the upper end of the columns 90 and 92. The piece 94 is able to bear on the upper block 82, when the posts 90, 92 are not carried by the connecting support 32 .

La pièce 94 est munie d'un galet de verrouillage 96 traversant une ouverture 98 de la plaque 74.The piece 94 is provided with a locking roller 96 passing through an opening 98 of the plate 74.

Le galet de verrouillage 96 est propre à se déplacer le long d'un tasseau 100 fixé à la platine de support 44 et visible sur la figure 2. Le tasseau 100 comprend deux encoches 102 dans lesquelles le galet de verrouillage 96 est propre à se loger pour bloquer en déplacement l'élément de transmission 72 selon la direction Y et ainsi bloquer en déplacement le moufle 64 et ainsi les bras d'entraînement 62.The locking roller 96 is adapted to move along a bracket 100 fixed to the support plate 44 and visible on the figure 2 . The cleat 100 comprises two notches 102 in which the locking roller 96 is adapted to be housed in order to block the transmission element 72 in the Y direction and thus block the muffle 64 and thus the drive arms 62 in displacement.

Les encoches sont formées à une position correspondant à la position de fin de course de l'élément de transmission 72.The notches are formed at a position corresponding to the end position of the transmission element 72.

Une bague 104 est fixée à la colonnette 90 de manière à être disposée entre le bloc supérieur 82 et le bloc inférieur 84. Un ressort de compression 106 est fixé solidairement au bloc supérieur 82 et à la bague 104. Ce ressort 106 est propre à tirer la colonnette 90 vers le bloc inférieur 84 et ainsi, à amener le galet de verrouillage 96 dans une encoche 102.A ring 104 is fixed to the column 90 so as to be disposed between the upper block 82 and the lower block 84. A compression spring 106 is fixed integrally to the upper block 82 and the ring 104. This spring 106 is adapted to pull the column 90 to the lower block 84 and thus, to bring the locking roller 96 into a notch 102.

Le dispositif de transfert 22 comporte en outre un détecteur du nombre de déplacements des bras d'entraînement 62, non représenté sur les figures.The transfer device 22 further comprises a detector of the number of movements of the drive arms 62, not shown in the figures.

La machine à imprimer 2 comporte en outre un dispositif 107 d'entraînement de la seconde bobine 50 illustré sur la figure 11. Le dispositif d'entraînement 107 est disposé au poste d'évacuation 16 et est porté par le support 5.The printing machine 2 further comprises a device 107 for driving the second coil 50 illustrated on the figure 11 . The drive device 107 is disposed at the evacuation station 16 and is carried by the support 5.

Il comporte une roue 108 d'entraînement en rotation de la cloche 54 du dispositif de transfert, un moto réducteur 110 propre à entraîner la roue 108 et un vérin pneumatique 112 adapté pour soulever la roue 108 afin que celle-ci vienne au contact de la cloche 54.It comprises a wheel 108 driving rotation of the bell 54 of the transfer device, a gear motor 110 adapted to drive the wheel 108 and a pneumatic cylinder 112 adapted to lift the wheel 108 so that it comes into contact with the bell 54.

L'unité de pilotage 26 est apte à commander le moto réducteur 110 et le vérin 112 pour entraîner en rotation la seconde bobine 50 dans un sens d'enroulement, ainsi que le frein électromagnétique 52 pour autoriser le déroulement de la première bobine 48, lorsque le nombre de déplacements des bras d'entraînement 62 dépasse un seuil défini ou lorsque la bande de papier 40 est souillée ou abîmée.The control unit 26 is able to control the gear motor 110 and the jack 112 to drive in rotation the second coil 50 in a winding direction, as well as the electromagnetic brake 52 to allow the unwinding of the first coil 48, when the number of movements of the driving arms 62 exceeds a defined threshold or when the paper web 40 is soiled or damaged.

La machine à imprimer 2 comporte, de plus, des moyens d'entraînement 114 des dispositifs de transfert 22.The printing machine 2 further comprises drive means 114 of the transfer devices 22.

Contrairement aux moyens d'entraînement 28 équipant les postes 12 et 14, les moyens d'entraînement 114 comportent un vérin pneumatique 116 propre à déplacer le support de liaison 32 selon la direction Y et un vérin pneumatique non visible sur les figures, propre à déplacer le support de liaison 32 selon la direction Z.Contrary to the drive means 28 fitted to the stations 12 and 14, the drive means 114 comprise a pneumatic cylinder 116 capable of displacing the connection support 32 in the Y direction and a pneumatic cylinder that is not visible in the figures, that is suitable for moving. the connection support 32 in the direction Z.

Les moyens d'entraînement 114 sont commandés par l'unité de pilotage 26 de manière à être actionnés uniquement lorsque l'objet est cassé.The drive means 114 are controlled by the control unit 26 so as to be actuated only when the object is broken.

En fonctionnement, un objet à imprimer 8 est amené par le convoyeur d'amenée 18 jusqu'au dispositif de transfert 22 disposé au poste d'amenée 10.In operation, an object to be printed 8 is brought by the supply conveyor 18 to the transfer device 22 disposed at the supply station 10.

L'unité de pilotage 26 commande le vérin pneumatique 38 afin que celui-ci soulève le support de liaison 32.The control unit 26 controls the pneumatic cylinder 38 so that it lifts the connection support 32.

Lors du déplacement vertical du support de liaison 32, selon une première trajectoire, les logements 34 s'engagent autour des colonnettes 90, 92. Puis, lors du déplacement vertical du support de liaison 32 selon une deuxième trajectoire, le galet de verrouillage 96 solidaire des colonnettes 90 , 92 est expulsé de l'encoche 102.During the vertical displacement of the connecting support 32, in a first path, the housings 34 engage around the columns 90, 92. Then, during the vertical displacement of the connecting support 32 in a second path, the locking roller 96 integral balusters 90, 92 are expelled from the notch 102.

Puis, l'unité de pilotage 26 commande le moto réducteur 36 afin que le support de liaison 32 soit déplacé dans la direction Y. Le support de liaison 32 entraîne en déplacement les colonnettes 90, 92 dans la direction Y et ainsi les bras d'entraînement 62 du moufle via la tige 76.Then, the control unit 26 controls the gear motor 36 so that the connecting support 32 is moved in the Y direction. The connecting support 32 moves the balusters 90, 92 in the Y direction and thus the arms driving 62 of the muffle via the rod 76.

Le déplacement des bras d'entraînement 62 dans le quatrième plan entraîne le déplacement de la portion de bande 40 entre les bras du support 46 et autour des rouleaux 60.The displacement of the drive arms 62 in the fourth plane causes the displacement of the band portion 40 between the arms of the support 46 and around the rollers 60.

La vitesse de déplacement de la portion de bande 40 est deux fois supérieure à la vitesse de déplacement des bras d'entraînement 62 du moufle.The speed of movement of the band portion 40 is twice the speed of movement of the driving arms 62 of the mitt.

Comme la vitesse et l'accélération des bandes porteuses 25 sont égales à la vitesse et à l'accélération de déplacement de la portion de bande 40, l'objet est déplacé du convoyeur d'amenée 10 au dispositif de transfert 22 sans être cassé et sans que cet objet ne bouge par rapport aux bandes transporteuses 25 et au convoyeur d'amenée 18, ce qui permet à l'objet d'être positionné avec précision sur la portion de bande 40 en vue de son impression.As the speed and the acceleration of the carrier strips 25 are equal to the speed and the acceleration of the displacement of the band portion 40, the object is moved from the supply conveyor 10 to the transfer device 22 without being broken and without this object moving relative to the conveyor belts 25 and the feed conveyor 18, which allows the object to be accurately positioned on the web portion 40 for printing.

Lorsque le support de liaison 32 est en fin de course, l'unité de pilotage 26 commande le vérin pneumatique 38 afin que celui-ci s'abaisse. Les colonnettes 90, 92, entraînées par leur propre poids et par l'action du ressort 106, s'abaissent. Le galet de verrouillage 96 solidaire des colonnettes descend également et vient s'encliqueter dans l'encoche 102 de sorte que l'élément de transmission 72 soit bloqué en translation selon l'axe Y.When the connection support 32 is at the end of travel, the control unit 26 controls the pneumatic cylinder 38 so that it lowers. The posts 90, 92, driven by their own weight and the action of the spring 106, are lowered. The locking roller 96 secured to the columns also descends and snaps into the notch 102 so that the transmission element 72 is locked in translation along the Y axis.

Puis, l'unité de pilotage 26 commande le déplacement en rotation de la tourelle 6 de manière à ce que le dispositif de transfert 22 portant l'objet 8 soit amené au poste d'impression 12.Then, the control unit 26 controls the rotational movement of the turret 6 so that the transfer device 22 carrying the object 8 is brought to the printing station 12.

L'objet à imprimer est alors imprimé.The object to be printed is then printed.

Ensuite, l'unité de pilotage 26 commande les moyens d'entraînement de la tourelle 6 afin que le dispositif de transfert 22 portant l'objet soit déplacé au poste d'évacuation 14.Then, the control unit 26 controls the drive means of the turret 6 so that the transfer device 22 carrying the object is moved to the evacuation station 14.

Lorsque l'objet n'a pas été abîmé, l'unité de pilotage 26 commande le vérin pneumatique 38 du poste d'évacuation 14 pour soulever le support de liaison 32 et le connecter aux colonnettes 90, 92, et enfin pour sortir le galet de verrouillage 96 de l'encoche 102.When the object has not been damaged, the control unit 26 controls the pneumatic cylinder 38 of the evacuation station 14 to lift the connection support 32 and connect it to the balusters 90, 92, and finally to remove the roller locking 96 of the notch 102.

Puis, l'unité de pilotage 26 commande le moto réducteur 36 des moyens d'entraînement 28 disposés au poste d'évacuation 14 afin que le support de liaison 32 soit déplacé dans une direction inverse à la direction Y, de sorte que l'objet à imprimer 8 soit transféré du dispositif de transfert 22 aux bandes porteuses 25 du convoyeur d'évacuation 20.Then, the control unit 26 controls the gear motor 36 of the drive means 28 arranged at the evacuation station 14 so that the connecting support 32 is moved in a direction opposite to the direction Y, so that the object to be printed 8 is transferred from the transfer device 22 to the carrier strips 25 of the evacuation conveyor 20.

Lorsque la caméra 17 et ses moyens de traitement annexes déterminent que l'objet à imprimer 8 est détérioré ou cassé, l'unité de pilotage 26 ne commande pas le vérin pneumatique 38 et le moto réducteur 36 du poste d'évacuation 14.When the camera 17 and its ancillary processing means determine that the object to be printed 8 is damaged or broken, the control unit 26 does not control the pneumatic cylinder 38 and the geared motor 36 of the evacuation station 14.

Dans ce cas, l'unité de pilotage 26 commande la rotation de la tourelle 6 afin que le dispositif de transfert 22 soit amené au poste d'évacuation 16.In this case, the control unit 26 controls the rotation of the turret 6 so that the transfer device 22 is brought to the evacuation station 16.

Puis, l'unité de pilotage 26 commande les vérins pneumatiques 38 des moyens d'entraînement 114 disposés au niveau du poste d'évacuation 16 afin que le dispositif de transfert déplace l'objet abîmé dans un container à déchets non représenté.Then, the control unit 26 controls the pneumatic cylinders 38 drive means 114 arranged at the evacuation station 16 so that the transfer device moves the damaged object in a waste container not shown.

Lorsque le détecteur a détecté que la portion de bande 40 a effectué un nombre de transferts prédéterminé, la portion de bande 40 est renouvelée pour éviter le déchirement de celle-ci ou pour éviter que celle-ci salisse les objets à imprimer.When the detector has detected that the band portion 40 has made a predetermined number of transfers, the band portion 40 is renewed to prevent tearing thereof or to prevent it from dirtying the objects to be printed.

A cet effet, l'unité de pilotage 26 commande le frein électromagnétique 52 afin que celui-ci autorise la rotation de la première bobine 48. Parallèlement, l'unité de pilotage 26 commande le vérin 112 pour soulever la roue d'entraînement 108 afin que celle-ci vienne au contact de la cloche 54.For this purpose, the control unit 26 controls the electromagnetic brake 52 so that it allows the rotation of the first coil 48. In parallel, the control unit 26 controls the jack 112 to raise the drive wheel 108 to that it comes into contact with the bell 54.

Puis, l'unité de pilotage 26 commande le moto réducteur 110 pour entraîner en rotation la roue 108. La roue 108 entraîne en rotation la cloche 54 et la seconde bobine 50 solidaire de cette cloche 54 jusqu'à ce que l'ensemble de la portion de bande 40 précédemment utilisée soit enroulé autour de la seconde bobine 50.Then, the control unit 26 controls the gear motor 110 for rotating the wheel 108. The wheel 108 rotates the bell 54 and the second coil 50 integral with the bell 54 until the entire previously used band portion 40 is wrapped around the second coil 50.

Avantageusement, la machine à imprimer selon l'invention permet de transporter des objets à imprimer de faible épaisseur (moins d'un millimètre) sans les casser sans utiliser de bande de papier, la bande de papier étant changée uniquement lorsque le papier est usé ou souillé.Advantageously, the printing machine according to the invention makes it possible to transport objects to print thin (less than one millimeter) without breaking them without using a strip of paper, the strip of paper being changed only when the paper is worn or defiled.

Avantageusement, les bras d'entraînement 62 entraînent en déplacement la portion de bande 40 à une vitesse et à une accélération égales à la vitesse et à l'accélération des bandes porteuses 25 des convoyeurs 18, 20 de sorte que l'objet 8 ne soit pas abîmé lors de son passage d'un convoyeur vers un dispositif de transfert 22.Advantageously, the driving arms 62 move the band portion 40 at a speed and at an acceleration equal to the speed and acceleration of the carrier strips 25 of the conveyors 18, 20 so that the object 8 is not not damaged during its passage from a conveyor to a transfer device 22.

Avantageusement, les moyens d'entraînement 28 de la portion de bande transporteuse 40 ne sont pas portés par la tourelle 6, ce qui allège le poids et l'encombrement de cette dernière.Advantageously, the drive means 28 of the portion of the conveyor belt 40 are not carried by the turret 6, which reduces the weight and bulk of the latter.

Avantageusement, quelle que soit la position de la bande sur les rouleaux (c'est-à-dire toute la bande enroulée sur la première bobine 48 ou toute la bande enroulée sur la deuxième bobine 50), la portion de bande transporteuse 40 est déplacée toujours à la même vitesse et sur une même trajectoire.Advantageously, whatever the position of the strip on the rollers (that is to say the whole band wound on the first coil 48 or the whole band wound on the second coil 50), the portion of the conveyor belt 40 is displaced. always at the same speed and on the same path.

Avantageusement, cette vitesse de déplacement de la bande transporteuse est facilement modifiable.Advantageously, this speed of movement of the conveyor belt is easily modifiable.

Avantageusement, les moyens d'entraînement 114 ne comportent pas de dispositif de commande. Ils sont propres à déplacer la portion de bande 40 à une vitesse quelconque indépendante de la vitesse de déplacement des bandes porteuses 25. En conséquence, la machine à imprimer 2 présente un coût moins élevé que les machines à imprimer de l'état de la technique.Advantageously, the drive means 114 do not comprise a control device. They are able to move the band portion 40 at any speed independent of the speed of movement of the carrier strips 25. As a result, the printing machine 2 has a lower cost than the printing machines of the state of the art. .

Avantageusement, le déplacement de la portion de bande 40 est ajusté pour correspondre exactement au déplacement des bandes porteuses 25, qui sont déplacées séquentiellement par le moteur pas à pas. Ainsi, les objets ne frottent pas contre la portion de bande 40, ne glissent pas, ne pivotent pas sur eux-mêmes lors de leur passage du convoyeur 18 au dispositif de transfert 22. Ainsi, ces objets peuvent être positionnés avec précision et de manière constante sur la portion de bande 40 en vue de leur impression. De même, les objets sont positionnés avec un espacement constant sur le convoyeur d'évacuation 20, cet espacement étant égal à l'espacement existant entre les objets sur le convoyeur d'amenée 18. Le respect de cette interdistance entre les objets facilite le traitement ultérieur et automatique de ceux-ci.Advantageously, the displacement of the band portion 40 is adjusted to exactly match the displacement of the carrier strips 25, which are displaced sequentially by the stepper motor. Thus, the objects do not rub against the band portion 40, do not slide, do not pivot on themselves during their passage from the conveyor 18 to the transfer device 22. Thus, these objects can be positioned accurately and accurately. constant on the band portion 40 for printing. Likewise, the objects are positioned with constant spacing on the discharge conveyor 20, this spacing being equal to the spacing between the objects on the conveyor 18. The respect of this interdistance between the objects facilitates the subsequent and automatic processing thereof.

Claims (13)

  1. Printing machine (2) comprising:
    - a sub-frame (4, 5, 7);
    - a turret (6) carried by the sub-frame (4, 5, 7), said turret (6) being driven in rotation relative to the sub-frame (4, 5, 7) about an axis of rotation A-A, in order to move an object (8) to be printed between at least a printing (12), introduction (10) and/or removal (14, 16) station for the object to be printed;
    - a conveyor (18, 20) carried by the sub-frame (4, 5, 7), the conveyor (18, 20) being arranged to introduce or remove, at the introduction (10) and/or removal (14, 16) station, the object (8) to be printed;
    - a transfer device (22) carried by the turret (6), said transfer device (22) comprising a conveying web portion (40) capable of moving the object (8) to be printed between the conveyor (18, 20) and the turret (6);
    - a printing device (13) arranged to print the object (8) to be printed, said printing device (13) being disposed at the printing station (12);
    characterised in that the machine (2) comprises drive means (28, 114, 116) for the conveying web portion (40) of the transfer device, said drive means (28, 114, 116) being carried by the sub-frame (4, 5, 7), each transfer device (22) comprising a transmission element (72) which is disengagable from the drive means (28, 114, 116).
  2. Printing machine (2) according to claim 1, wherein the transfer device (22) includes:
    - a supporting bracket (44);
    - two supporting arms (46) for the conveying web portion (40) which are fixed to the supporting bracket (44), said supporting arms (46) being parallel; and
    - two drive arms (62) for moving the conveying web portion (40), the drive arms (62) being arranged to move relative to the supporting bracket (44); and
    - retention means (52, 53) capable of keeping the conveying web portion (40) tensioned between the supporting arms (46) and the drive arms (62), the conveying web portion (40) being in contact with an outer face of each supporting arm (46) and with an inner face of each drive arm (62).
  3. Printing machine (2) according to claim 2, wherein the conveyor (18, 20) includes at least one web (25) carrying the object (8) to be printed, the machine (2) comprising a control unit (26) for the conveyor (18, 20) and drive means (28, 14, 18), the control unit (26) being capable of controlling the speed and acceleration of the drive arms (62) according to the speed and acceleration of the carrying web (25).
  4. Printing machine (2) according to claim 3, wherein the control unit (26) is arranged to set a speed of movement of the drive arms (62) which is equal to half the speed of movement of the carrying web (25).
  5. Printing machine (2) according to any one of claims 2 to 4, wherein the transfer device (22) comprises a device for renewing the conveying web portion (40), comprising:
    - a first reel (48) fixed to the supporting bracket (44), a web portion intended for transporting the objects (8) to be printed being wound around the first reel (48);
    - a second reel (50) fixed to the supporting bracket (44), a web portion that has transported the objects (8) to be printed being wound around the second reel (50); the web portion wound onto the first reel (48), the conveying web portion (40) and the web portion wound onto the second reel (50) forming a continuous web of paper; and wherein
    the retention means (52, 53) are arranged to be unlocked in order to allow rotation of the first reel (48) at least in an unwinding direction and rotation of the second reel (50) at least in a winding-on direction, in order to renew the conveying web portion (40).
  6. Printing machine (2) according to claim 5, the retention means (52, 53) comprising an electromagnetic brake (52) equipping the first reel (48) and a free wheel (53) equipping the second reel (50).
  7. Printing machine (2) according to any one of claims 2 to 6, wherein the transmission element (72) is connected to the drive arms (62), and wherein the drive means (28, 114, 116) comprise:
    - a linkage element (32) connectible to the transmission element (72);
    - first movement means (36) arranged to move the linkage element (32) in a first direction (Z) over a first path in order to connect the linkage element (32) to the transmission element (72) and to disconnect it; and
    - second movement means (38, 116) arranged to drive the movement of the linkage element (32) in a second direction (Y), different from the first direction (Z), in order to move the drive arms (62) back and forth when the linkage element (32) is connected to the transmission element (72).
  8. Printing machine (2) according to claims 4 and 7 taken in combination, wherein the transmission element (72) comprises:
    - a supporting plate (74) arranged to move relative to the supporting bracket (44) in the second direction (Y); and
    - at least one pillar (90, 92) carried by the supporting plate (74), the or each pillar (90, 92) being arranged to move relative to the supporting bracket (44) in the first (Z) and second (Y) directions.
  9. Printing machine (2) according to any one of claims 7 and 8, wherein the transfer device (22) comprises locking means (96, 102, 106) capable of locking the drive arms (62) in terms of movement in the second direction (Y), when the drive arms (62) are in at least one end-of-travel position of the back and forth movement.
  10. Printing machine (2) according to claim 8 and 9 taken in combination, wherein the locking means comprise:
    - a locking roller (96) fixed to the or each pillar (90, 92);
    - at least one notch (102) formed in the supporting bracket (44) and arranged to receive the locking roller (96); and
    - resilient means (106) capable of introducing the locking roller (96) into the or each notch (102), said resilient means (106) being fixed to the pillar (90, 92) and to the supporting plate (74).
  11. Printing machine (2) according to claim 10, wherein the first movement means (36) are arranged to move the linkage element (32) along a second path at the start and/or end of the travel of the back and forth movement of the drive arms (62) in order to cause the locking roller (96) to come out of the or each notch (102).
  12. Printing machine (2) according to any one of claims 5 to 11, wherein the machine comprises a device (107) for driving rotation of the second reel (50) in a winding-on direction, the drive device (107) being fixed to the sub-frame (4, 5, 7).
  13. Printing machine (2) according to claim 12, wherein the transfer device (22) comprises:
    - a detector of the number of back and forth movements of the drive arms (62); and
    - a control unit (26) capable of controlling the drive device (107) for the second reel (50) and unlocking of the retention means (52, 53) when the number detected exceeds a defined threshold.
EP09163618.3A 2008-06-24 2009-06-24 Printing machine Not-in-force EP2138305B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0854198A FR2932717B1 (en) 2008-06-24 2008-06-24 PRINTING MACHINE.

Publications (3)

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EP2138305A2 EP2138305A2 (en) 2009-12-30
EP2138305A3 EP2138305A3 (en) 2012-03-21
EP2138305B1 true EP2138305B1 (en) 2013-05-22

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Application Number Title Priority Date Filing Date
EP09163618.3A Not-in-force EP2138305B1 (en) 2008-06-24 2009-06-24 Printing machine

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US (1) US8763524B2 (en)
EP (1) EP2138305B1 (en)
FR (1) FR2932717B1 (en)

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Also Published As

Publication number Publication date
FR2932717B1 (en) 2011-03-25
US20090320699A1 (en) 2009-12-31
EP2138305A2 (en) 2009-12-30
FR2932717A1 (en) 2009-12-25
US8763524B2 (en) 2014-07-01
EP2138305A3 (en) 2012-03-21

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