EP2842756A1 - Machine for printing an object comprising print heads with tiltable ink jets - Google Patents

Machine for printing an object comprising print heads with tiltable ink jets Download PDF

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Publication number
EP2842756A1
EP2842756A1 EP14178062.7A EP14178062A EP2842756A1 EP 2842756 A1 EP2842756 A1 EP 2842756A1 EP 14178062 A EP14178062 A EP 14178062A EP 2842756 A1 EP2842756 A1 EP 2842756A1
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EP
European Patent Office
Prior art keywords
printing
frame
printing machine
relative
axes
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.)
Withdrawn
Application number
EP14178062.7A
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German (de)
French (fr)
Inventor
Rui Monteiro
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 EP2842756A1 publication Critical patent/EP2842756A1/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00Actions or mechanisms not otherwise provided for
    • B41J25/304Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/316Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with tilting motion mechanisms relative to paper surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/14Structure thereof only for on-demand ink jet heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40733Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles

Definitions

  • Each print head has apertures or nozzles adapted to direct ink objects parallel to each other extending in a printing direction perpendicular to the object.
  • the print heads are arranged radially around the object.
  • the print directions go through the axis of the object. In other words, they are perpendicular to the surface of the object to be printed.
  • Requirement FR-A-2 908 076 teaches an adaptation of the printing machine to different cylindrical objects of given axis with increasing radii.
  • the printing machine includes a system for holding and moving the printheads to separate the printheads from each other, the printing directions passing through the axis of the object. The larger the object to be printed, the more the print heads are separated from each other.
  • the system for holding and moving the printheads has dimensions adapted to the maximum radius of the objects to be printed.
  • the machine comprises a system for holding and moving large print heads.
  • Such a machine is therefore relatively bulky and expensive.
  • An object of the invention is therefore to provide a printing machine suitable for large diameter cylindrical objects, while being of a more moderate cost than the printing machines of the prior art.
  • the subject of the invention is a printing machine of the type described above, in which the system is adapted so that, in each of the positions of the said plurality, the printing directions are distinct from one another and pass by the same central axis, the central axes corresponding to the plurality of positions being respectively located at a plurality of distances from the chassis.
  • the printing machine 1 comprises a frame 3, at least four inkjet printing heads 5, 7, 9, 11, and a system 13 for holding and moving the printheads attached to the frame.
  • the printing machine 1 is adapted to print an object 15 ( figure 3 ) having a substantially flat surface 17.
  • the printing machine 1 is also adapted to print an object 19 ( figure 5 ) having a substantially cylindrical surface 21 and a central axis C.
  • the objects 15 and 19 are located under the printing machine 1 in the example shown.
  • the object 15 is for example carried by a holder (not shown) adapted to move the object 15 in translation relative to the frame 3 in a transverse direction T.
  • the object 19 is for example carried by a slide (not shown) adapted to move the object 19 in rotation about the central axis C with respect to the frame 3.
  • the object 19 has for example a greater radius or equal to 15 mm.
  • the frame 3 is generally square or rectangular ( figure 2 ).
  • the frame 3 extends along a plane P which is substantially horizontal in the example shown.
  • the frame 3 defines an opening 23 in a direction V substantially perpendicular to the transverse direction T.
  • the direction V is substantially vertical in the example shown.
  • the opening 23 is generally square or rectangular.
  • the opening 23 receives a part of the system 13 and the print heads 5, 7, 9, 11.
  • the printing heads 5, 7, 9, 11 are for example similar to each other. For example, they are respectively dedicated to a base color in order to perform four-color process prints on the objects 15, 19.
  • the printing heads 5, 7, 9, 11 are respectively dedicated to the same color, for example white, in order to effect a coating on the objects 15, 19.
  • the printing heads 5, 7, 9, 11 respectively define printing directions D1, D2, D3, D4 ( figures 3 and 5 ), wherein the print heads are respectively adapted to direct ink jets (not shown) towards objects 15, 19.
  • the ink jets of each print head 5, 7, 9, 11 are substantially parallel to each other.
  • the system 13 is adapted to move, for example collectively, the print heads 5, 7, 9, 11 between a plurality of positions with respect to the frame 3, similar to that shown in FIGS. Figures 4 and 5 .
  • the system 13 is adapted so that the printing directions D1, D2, D3, D4 are distinct from each other and pass through the central axis C.
  • the central axis C is located at a distance D from the chassis 3.
  • the central axis C is substantially parallel to an axial direction A.
  • the axial direction A is substantially perpendicular to the printing directions D1, D2, D3, D4.
  • the axial direction A is substantially perpendicular to the direction V and to the transverse direction T.
  • the distance D is characteristic of the position considered among said plurality.
  • the system 13 is further adapted so that in each of said plurality of positions, such as that shown in FIG. figure 5 , the printing directions D1, D2, D3, D4 are angularly distributed around the central axis C at a constant pitch ⁇ .
  • the system 13 is adapted so that the distance D selectively takes any value, for example greater than 15 mm.
  • the system 13 is adapted so that the distance D selectively takes an arbitrarily large value.
  • the system 13 is further adapted to place the printheads 5, 7, 9, 11 in an arc ( figure 5 ) around the object 19.
  • the system 13 is further adapted to place the printheads 5, 7, 9, 11 in at least one position with respect to the frame 3, shown in FIGS. Figures 1 to 3 wherein the printing directions D1, D2, D3, D4 are substantially parallel to each other.
  • the position represented on the figure 3 is distinct from the plurality of positions similar to that shown on the figure 5 .
  • the position represented on the figure 3 is in fact a limiting case of the plurality of positions.
  • the central axis C is at an infinite distance D of the frame 3 and the angle pitch ⁇ is zero.
  • the system 13 is further adapted so that the angle ⁇ selectively takes values between 0 ° and 60 °, preferably all values between 0 ° and 60 °.
  • the system 13 comprises four supports 25, 27, 29, 31 on which are fixed respectively the four printheads 5, 7, 9, 11, and four main axes 33A, 33B, 35A, 35B integral with the chassis 3 and parallel to the axial direction A.
  • the system 13 also comprises four links 37A, 37B, 39A, 39B rotatably mounted relative to the frame 3 respectively about the four main axes 33A, 33B, 35A, 35B, and four movable axes 41A, 41B , 43A, 43B substantially parallel to the axial direction A and rotatably mounted respectively on the connecting rods 37A, 37B, 39A, 39B.
  • the system 13 further comprises a drive assembly 43 for rotating the connecting rod 37A around the main axis 33A relative to the chassis 3.
  • the system 13 also comprises two regulator assemblies 45A, 45B for controlling the rotation on it. same of the movable axis 41A, and two securing assemblies 47A, 47B for securing the four supports 25, 27, 29, 31 in rotation with each other.
  • the elements referenced by numbers followed by the letter A are substantially symmetrical elements referenced by numbers followed by the letter B with respect to a median plane P ', with the exception of the connecting rods 37A, 37B, which are not symmetrical to each other. Also only the elements of the system 13 referenced by numbers followed by the letter A will be described in more detail.
  • the median plane P ' is perpendicular to the axial direction A.
  • the main axes 33A and 35A are separated by a distance E and are, in the example shown, in the same horizontal plane.
  • the movable axes 41A, 43A are also located at the distance E respectively from the main axes 33A and 35A.
  • Each of the supports 25, 27, 29, 31 has an elongated shape, advantageously in a cradle ( figures 1 and 4 ), in the axial direction A.
  • the supports 25, 27, 29, 31 extend respectively between the main axes 33A, 33B, 35A, 35B and the movable axes 41A, 41B, 43A, 43B in the axial direction A. ( figure 6 ).
  • the support 27 is rotatably mounted around the main axes 33A, 33B.
  • the support 29 is rotatably mounted around the main axes 35A, 35B.
  • the support 25 is integral with the movable axes 41A, 41B.
  • the support 31 is integral with the movable axes 43A, 43B.
  • the training set 43 ( figures 1 and 4 ) comprises a geared motor 49, and a drive rod 51 coupling the geared motor 49 with the connecting rod 37A to drive the connecting rod 37A in rotation about the main axis 41 A with respect to the chassis 3.
  • the link 37A has an extension 53 on which the drive rod 51 is rotatably mounted.
  • the connecting rods 37B, 39A, 39B are devoid of such an extension.
  • the links 37A, 37B, 39A, 39B are configured to maintain the movable axes 41A, 41B, 43A, 43B respectively at the distance E of the main axes 33A, 33B, 35A, 35B.
  • Each of the regulator assemblies 45A, 45B respectively comprises two pinions 55A, 55B, 57A, 57B secured respectively to the main axes 33A, 33B, 35A, 35B, and two toothed sectors 59A, 59B, 61A, 61B secured respectively to the movable axes 41A, 41B, 43A , 43B.
  • the toothed sectors 59A, 61A mesh with the gears 55A, 57A.
  • the toothed sectors 59A, 61A have a diameter equal to twice the diameter of the gears 55A, 57A.
  • the tooth sectors 59A, 61A and the pinions 55A, 57A respectively extend between the connecting rods 37A, 39A and an inner edge of the frame 3 in the axial direction A.
  • Each of the securing assemblies 47A, 47B ( figures 6 and 7 ) comprises respectively four gears 63A, 63B, 65A, 65B, 67A, 67B, 69A, 69B respectively integral with the four supports 25, 27, 29, 31.
  • the four gears 63B, 65B, 67B, 69B ( figure 7 ) are substantially of the same diameter and meshing successively into each other. By symmetry with respect to the plane P ', the same applies to the four gears 63A, 65A, 67A, 69A.
  • the gears 63A, 63B, 65A, 65B, 67A, 67B, 69A, 69B are respectively located at opposite axial ends of the supports 25, 27, 29, 31.
  • the gears 63A, 65A, 67A, 69A respectively extend between the connecting rods 37A, 39A and the supports 25, 27, 29, 31 in the axial direction A.
  • the machine 1 is for example initially in the configuration shown on the Figures 1 to 3 wherein the printing directions D1, D2, D3, D4 are substantially parallel to each other.
  • the printing machine 1 prints the surface 17 of the object 15.
  • the object 15 is moved in translation in the transverse direction T relative to the chassis 3.
  • the configuration change of the printing machine 1 passing the printheads 5, 7, 9, 11 from the position shown on the Figures 1 to 3 at one of the positions similar to that shown on the Figures 4 and 5 is performed in the following manner.
  • the geared motor 49 drives the driving rod 51 ( figure 1 ) which itself drives in rotation the connecting rods 37A, the movable axis 41A, the support 5, the movable axis 41B and the connecting rod 37B around the main axes 33A, 33B with respect to the frame 3 by an angle ⁇ . visible on the figure 11 .
  • the regulator assemblies 45A, 45B are adapted so that, when the connecting rods 37A, 37B pivot at an angle ⁇ with respect to the chassis 3 respectively around the main axes 33A, 33B, the movable axes 41A, 41B pivot in the connecting rods 37A 37B at an angle ⁇ / 2 relative to the connecting rods 37A, 37B. Indeed, the toothed sector 59B moves from the position represented on the figure 9 to that represented on the figure 12 . Due to its diameter which is twice that of the pinion 55B, the toothed sector 59B pivots by an angle ⁇ / 2.
  • the securing assemblies 47A, 47B are adapted so that the supports 25, 27, 29, 31 are integral with each other in rotation respectively about the main axes 33A, 33B, 35A, 35B and the movable axes 41A, 41B, 43A, 43B with respect to the frame 3.
  • the pivoting of an angle ⁇ / 2 of the gear 63B ( figure 10 ) relative to the link 37B causes a pivoting of the gear 65B in the opposite direction of an angle a / 2.
  • the gear 65B pivots with an angle ⁇ - ⁇ / 2 relative to the frame 3.
  • the printing direction D2, integral with the gear 65B also pivots by an angle ⁇ - ⁇ / 2 relative to the chassis 3.
  • the printing directions D3 and D4 also pivot respectively by an angle ⁇ - ⁇ / 2 and an angle ⁇ + ⁇ / 2 with respect to the frame 3 ( figure 10 ).
  • the printing directions D1, D2, D3, D4 are successively separated by a pitch of angle ⁇ .
  • the movable axis 41 A, the main axes 33A, 35A, and the movable axis 43A are successively separated by the same distance E, and that the connecting rods 37A, 39A have pivoted angles ⁇ relative to the frame 3, the movable axis 41 A, the main axes 33A, 35A, and the movable axis 43A are distributed in an arc around the central axis C. Because of their respective orientations relative to the frame 3, the directions of impressions D1, D2, D3, D4 converge towards the central axis C.
  • the printing machine 1 prints the surface 21 of the object 19 which is rotated about the central axis C relative to the frame 3.
  • the print heads 5, 7, 9, 11 are collectively displaced from the position shown on the Figures 4 and 5 in another analogous position, which differs in the distance from the frame 3 to which the central axis C is located.
  • the angle ⁇ is zero, the heads 5, 7, 9, 11 are in the position shown in FIGS. Figures 1 to 3 .
  • the printing machine 1 thus adapts to the radius of the object 19, without the successive distances between the movable axes 41 A, the main axes 33A, 35A, and the movable axis 43A increase.
  • the printing machine 1 is suitable for large diameter cylindrical objects 19 or oval objects locally having a radius of curvature greater than or equal to 15 mm, as well as to the object 15 which is flat.
  • the printing machine 1 is smaller and therefore d a more moderate cost than the printing machines of the prior art.
  • a printing machine 100 is now described which is a variant of the printing machine 1.
  • the printing machine 100 differs from the printing machine 1 shown in the drawings. Figures 1 to 12 in that it comprises six print heads 105, 107, 109, 111, 113, 115 instead of four.
  • the other elements of the printing machine 100 are similar to those of the printing machine 1.
  • the analogous elements bear the same references as on the Figures 1 to 12 and will not be described again.
  • the system 13 is in the same configuration as on the Figures 1 to 3 that is, the printing directions D1, D2, D3, D4 are parallel to each other.
  • the printheads 105, 107, 109, 111, 113, 115 are analogous to the printheads 5, 7, 9, 11 shown in FIGS. Figures 1 to 3 .
  • the printheads 105, 107 are fixed on the support 25.
  • the printheads 105, 107 are aligned by the wafer in the axial direction A.
  • the printheads 111, 113 are fixed on the carrier 31.
  • the printheads 111, 113 are aligned by the wafer in the axial direction A.
  • the printheads 111, 113 are respectively to the printing heads 105, 107 in the transverse direction T.
  • the printing heads 109, 115 are respectively fixed on the supports 27, 29.
  • the printing heads 109, 115 are for example located facing each other in the transverse direction T. printhead 109 is axially offset relative to the printhead 105 and the printhead 107 is axially offset from the printhead 109.
  • the print head 109 is able to extend in the axial direction A a pattern (not shown) applied to the object 15 by the print head 105 when the object 15 is moved transversely with respect to the frame 3.
  • the print head 107 is adapted to extend in the axial direction A pattern (not shown) applied to the object 15 by the print head 109 while the object 15 is moved transversely relative to the frame 3.
  • able to extend a pattern in one direction means that the print head is adapted to apply to the object a new pattern located in the extension of the pattern.
  • the printheads 105, 107, 109 are configured for example to print patterns (not shown) of the same color.
  • the printing heads 105, 107, 109 are advantageously arranged on the supports 25, 27 so that they print on the object 15 contiguous patterns (not shown) when the object 15 is moved in translation relative to to the chassis 3 in the transverse direction T.
  • the printing machine 100 makes it possible to print a pattern on the object 15 on an axial extension three times greater than the axial extension allowed by the machine 1.
  • the printing heads 111, 113, 117 are arranged on the supports 29, 31 in a manner analogous to that of which the printing heads 105, 107, 109 are arranged on the supports 25, 27.
  • the heads of FIG. 111, 113, 117 are configured to print patterns (not shown) of a color different from that of the printheads 105, 107, 109.
  • the printheads 111, 113, 117 are configured to print patterns (not shown) of a color identical to that of the printheads 105, 107, 109, for example, white.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
  • Printers Characterized By Their Purpose (AREA)

Abstract

Machine d'impression (1) d'un objet (19) comportant : un châssis (3), au moins quatre têtes d'impression (5, 7, 9, 11) à jets d'encre adaptées respectivement pour diriger des jets d'encre vers l'objet selon au moins quatre directions d'impression (D1, D2, D3, D4), et un système (13) de maintien et de déplacement des têtes d'impression fixé sur le châssis et adapté pour déplacer les têtes d'impression entre une pluralité de positions par rapport au châssis. Le système (13) est adapté pour que, dans les positions de ladite pluralité, les directions d'impression soient distinctes les unes des autres et passent par un même axe central (C), les axes centraux correspondant à la pluralité de positions étant respectivement situés à une pluralité de distances (D) du châssis.Printing machine (1) for an object (19) comprising: a frame (3), at least four printheads (5, 7, 9, 11) with ink jets adapted respectively to direct jets d ink to the object in at least four directions of printing (D1, D2, D3, D4), and a system (13) for holding and moving the printheads attached to the frame and adapted to move the heads printing between a plurality of positions relative to the frame. The system (13) is adapted so that, in the positions of said plurality, the printing directions are distinct from each other and pass through the same central axis (C), the central axes corresponding to the plurality of positions being respectively located at a plurality of distances (D) from the chassis.

Description

La présente invention concerne une machine d'impression d'un objet, la machine d'impression comportant :

  • un châssis,
  • au moins quatre têtes d'impression à jets d'encre adaptées respectivement pour diriger des jets d'encre vers l'objet selon au moins quatre directions d'impression, et
  • un système de maintien et de déplacement des têtes d'impression fixé sur le châssis et adapté pour déplacer les têtes d'impression entre une pluralité de positions par rapport au châssis.
The present invention relates to a machine for printing an object, the printing machine comprising:
  • a chassis,
  • at least four ink jet printheads respectively adapted to direct ink streams to the object in at least four directions of printing, and
  • a printhead holding and moving system fixed to the frame and adapted to move the printheads between a plurality of positions relative to the frame.

Pour imprimer sur la surface d'un objet cylindrique à base circulaire, il est connu d'utiliser des têtes d'impressions à jets d'encre. Chaque tête d'impression comprend des orifices ou des buses adaptés pour diriger vers l'objet des jets d'encre parallèles entre eux s'étendant selon une direction d'impression perpendiculaire à l'objet.To print on the surface of a cylindrical object with a circular base, it is known to use inkjet printing heads. Each print head has apertures or nozzles adapted to direct ink objects parallel to each other extending in a printing direction perpendicular to the object.

Les têtes d'impression sont disposées radialement autour de l'objet. Les directions d'impression passent par l'axe de l'objet. Dit autrement, elles sont perpendiculaires à la surface de l'objet à imprimer.The print heads are arranged radially around the object. The print directions go through the axis of the object. In other words, they are perpendicular to the surface of the object to be printed.

La demande FR-A-2 908 076 enseigne une adaptation de la machine d'impression à différents objets cylindriques d'axe donné présentant des rayons croissants. La machine d'impression comporte un système de maintien et de déplacement des têtes d'impression permettant d'écarter les têtes d'impression les unes des autres, les directions d'impression passant par l'axe de l'objet. Plus l'objet à imprimer présente un rayon important, plus les têtes d'impression sont éloignées les unes des autres. Le système de maintien et de déplacement des têtes d'impression présente des dimensions adaptées au rayon maximal des objets à imprimer.Requirement FR-A-2 908 076 teaches an adaptation of the printing machine to different cylindrical objects of given axis with increasing radii. The printing machine includes a system for holding and moving the printheads to separate the printheads from each other, the printing directions passing through the axis of the object. The larger the object to be printed, the more the print heads are separated from each other. The system for holding and moving the printheads has dimensions adapted to the maximum radius of the objects to be printed.

Ainsi, pour imprimer des objets cylindriques de grand diamètre, la machine comporte un système de maintien et de déplacement des têtes d'impression de grandes dimensions. Une telle machine est donc relativement encombrante et onéreuse.Thus, for printing cylindrical objects of large diameter, the machine comprises a system for holding and moving large print heads. Such a machine is therefore relatively bulky and expensive.

En outre, une telle machine n'est pas adaptée pour imprimer des objets cylindriques à base ovale, dont la courbure locale varie.In addition, such a machine is not suitable for printing cylindrical objects with an oval base, the local curvature varies.

Un but de l'invention est donc de fournir une machine d'impression adaptée à des objets cylindriques de grand diamètre, tout en étant d'un coût plus modéré que les machines d'impression de l'art antérieur.An object of the invention is therefore to provide a printing machine suitable for large diameter cylindrical objects, while being of a more moderate cost than the printing machines of the prior art.

A cet effet, l'invention a pour objet une machine d'impression du type décrit ci-dessus, dans laquelle le système est adapté pour que, dans chacune des positions de ladite pluralité, les directions d'impression soient distinctes les unes des autres et passent par un même axe central, les axes centraux correspondant à la pluralité de positions étant respectivement situés à une pluralité de distances du châssis.For this purpose, the subject of the invention is a printing machine of the type described above, in which the system is adapted so that, in each of the positions of the said plurality, the printing directions are distinct from one another and pass by the same central axis, the central axes corresponding to the plurality of positions being respectively located at a plurality of distances from the chassis.

Selon des modes particuliers de réalisation, la machine d'impression comprend l'une ou plusieurs des caractéristiques suivantes, prises isolément ou selon toutes les combinaisons techniquement possibles :

  • le système est adapté pour placer les têtes d'impression dans au moins une position par rapport au châssis dans laquelle les directions d'impression sont sensiblement parallèles entre elles ;
  • le système est adapté pour que, dans chacune des positions de ladite pluralité, les directions d'impression soient distribuées angulairement autour de l'axe central selon un pas d'angle constant ;
  • le système comprend : au moins quatre supports sur lesquels sont fixées respectivement les quatre têtes d'impression, au moins deux axes principaux sensiblement parallèles entre eux et solidaires du châssis, deux des quatre supports étant montés rotatifs respectivement autour des deux axes principaux par rapport au châssis, au moins deux bielles montées rotatives par rapport au châssis respectivement autour des deux axes principaux, au moins deux axes mobiles sensiblement parallèles aux deux axes principaux, les axes mobiles étant montés rotatifs par rapport au châssis respectivement dans les deux bielles, les deux autres des quatre supports étant respectivement solidaires des deux axes mobiles, et un ensemble d'entraînement pour entraîner en rotation au moins l'une des bielles autour de l'un des axes principaux par rapport au châssis ;
  • le système comprend au moins un ensemble régulateur adapté pour, lorsque la bielle entraînée par l'ensemble d'entraînement pivote d'un angle α par rapport au châssis autour de l'axe principal, faire pivoter l'axe mobile monté dans la bielle entraînée, l'axe mobile pivotant d'un angle α/2 par rapport à la bielle entraînée ;
  • l'ensemble régulateur comprend au moins un pignon solidaire de l'axe principal autour duquel pivote la bielle entraînée, et au moins un secteur denté solidaire de l'axe mobile monté dans la bielle entraînée, le secteur denté engrenant sur le pignon et ayant un diamètre égal au double du diamètre du pignon ;
  • le système comprend au moins un ensemble de solidarisation adapté pour que les supports soient solidaires les uns des autres en rotation respectivement autour des deux axes principaux et des deux axes mobiles par rapport au châssis ;
  • l'ensemble de solidarisation comprend au moins quatre engrenages respectivement solidaires des quatre supports, les quatre engrenages étant sensiblement de même diamètre et engrenant successivement les uns dans les autres ;
  • le système est configuré pour qu'au moins deux des têtes d'impression décalées l'une par rapport à l'autre selon l'axe central, de sorte que l'une desdites deux têtes est apte à prolonger selon l'axe central un motif appliqué sur l'objet par l'autre des deux têtes d'impression ;
  • le système est configuré pour que lesdites deux têtes d'impression soient décalées l'une par rapport à l'autre selon l'axe central d'une distance telle que les lesdites deux têtes d'impression soient aptes à imprimer sur l'objet des motifs contigus ; et
  • le système est adapté pour déplacer collectivement les têtes d'impression entre les positions de ladite pluralité de positions.
According to particular embodiments, the printing machine comprises one or more of the following characteristics, taken separately or in any technically possible combination:
  • the system is adapted to place the printheads in at least one position relative to the frame in which the printing directions are substantially parallel to each other;
  • the system is adapted so that, in each of said plurality of positions, the printing directions are angularly distributed about the central axis at a constant pitch angle;
  • the system comprises: at least four supports on which the four print heads are respectively fixed, at least two main axes substantially parallel to each other and integral with the frame, two of the four supports being rotatably mounted respectively about the two main axes with respect to the frame, at least two connecting rods rotatably mounted relative to the chassis respectively about the two main axes, at least two movable axes substantially parallel to the two main axes, the movable axes being rotatably mounted relative to the frame respectively in the two connecting rods, the other two the four supports being respectively integral with the two movable axes, and a drive assembly for driving in rotation at least one of the connecting rods around one of the main axes relative to the chassis;
  • the system comprises at least one regulator assembly adapted to, when the rod driven by the driving assembly pivots at an angle α relative to the frame about the main axis, pivoting the movable axle mounted in the driven rod , the movable axis pivoting at an angle α / 2 relative to the driven rod;
  • the regulator assembly comprises at least one pinion integral with the main axis about which pivots the driven rod, and at least one toothed sector integral with the movable pin mounted in the driven rod, the toothed sector meshing with the pinion and having a diameter equal to twice the diameter of the pinion;
  • the system comprises at least one fastening assembly adapted so that the supports are integral with each other in rotation respectively about the two main axes and the two axes movable relative to the frame;
  • the fastening assembly comprises at least four gears respectively integral with the four supports, the four gears being substantially of the same diameter and meshing successively into each other;
  • the system is configured so that at least two of the print heads are offset relative to one another along the central axis, so that one of said two heads is adapted to extend along the central axis a pattern applied to the object by the other of the two printheads;
  • the system is configured so that said two print heads are offset relative to each other along the central axis by a distance such that said two print heads are able to print on the object of the two contiguous patterns; and
  • the system is adapted to collectively move the printheads between the positions of said plurality of positions.

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 machine d'impression selon l'invention, les têtes d'impression étant dans une position dans laquelle les directions d'impression sont parallèles entre elles ;
  • la figure 2 est une vue de dessus de la machine d'impression représentée sur la figure 1 ;
  • la figure 3 est une vue de face de la machine d'impression représentée sur les figures 1 et 2, en coupe selon un plan vertical ;
  • la figure 4 est une vue en perspective de la machine d'impression représentée sur les figures 1 à 4, les têtes d'impression étant dans une position dans laquelle les directions d'impression passent par un axe central ;
  • la figure 5 est une vue de face de la machine d'impression représentée sur les figures 1 à 4, en coupe selon le même plan vertical que pour la figure 3, les têtes d'impression étant dans la position représentée sur la figure 4 ;
  • la figure 6 est une coupe de la machine d'impression représentée sur les figures 1 à 5 selon un plan horizontal visible sur la figure 3, les têtes d'impression étant dans la position représentée sur la figure 1 ;
  • les figures 7 à 9 sont des coupes de la machine d'impression représentée sur les figures 1 à 6 selon des plans verticaux visibles sur la figure 2, les têtes d'impression étant dans la position représentée sur la figure 1 ;
  • les figures 10 à 12 sont des coupes de la machine d'impression représentée sur les figures 1 à 9, selon les mêmes plans verticaux que pour les figures 7 à 9, les têtes d'impression étant dans la position représentée sur la figure 4 ;
  • la figure 13 est une vue en perspective d'une machine d'impression selon un autre mode de réalisation de l'invention ; et
  • la figure 14 est une vue de dessus de la machine d'impression représentée sur la figure 13.
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 printing machine according to the invention, the print heads being in a position in which the printing directions are parallel to each other;
  • the figure 2 is a top view of the printing machine shown on the figure 1 ;
  • the figure 3 is a front view of the printing machine shown on the figures 1 and 2 in section on a vertical plane;
  • the figure 4 is a perspective view of the printing machine shown on the Figures 1 to 4 the print heads being in a position in which the printing directions pass through a central axis;
  • the figure 5 is a front view of the printing machine shown on the Figures 1 to 4 , in section on the same vertical plane as for the figure 3 , the printheads being in the position shown on the figure 4 ;
  • the figure 6 is a section of the printing machine shown on the Figures 1 to 5 according to a horizontal plane visible on the figure 3 , the printheads being in the position shown on the figure 1 ;
  • the Figures 7 to 9 are sections of the printing machine shown on the Figures 1 to 6 according to vertical planes visible on the figure 2 , the printheads being in the position shown on the figure 1 ;
  • the Figures 10 to 12 are sections of the printing machine shown on the Figures 1 to 9 , according to the same vertical plans as for the Figures 7 to 9 , the printheads being in the position shown on the figure 4 ;
  • the figure 13 is a perspective view of a printing machine according to another embodiment of the invention; and
  • the figure 14 is a top view of the printing machine shown on the figure 13 .

En référence aux figures 1 à 5, on décrit une machine d'impression 1 selon l'invention. La machine d'impression 1 comprend un châssis 3, au moins quatre têtes d'impression à jets d'encre 5, 7, 9, 11, et un système 13 de maintien et de déplacement des têtes d'impression fixé sur le châssis.With reference to Figures 1 to 5 a printing machine 1 according to the invention is described. The printing machine 1 comprises a frame 3, at least four inkjet printing heads 5, 7, 9, 11, and a system 13 for holding and moving the printheads attached to the frame.

La machine d'impression 1 est adaptée pour imprimer un objet 15 (figure 3) présentant une surface sensiblement plane 17. La machine d'impression 1 est également adaptée pour imprimer un objet 19 (figure 5) présentant une surface sensiblement cylindrique 21 et un axe central C.The printing machine 1 is adapted to print an object 15 ( figure 3 ) having a substantially flat surface 17. The printing machine 1 is also adapted to print an object 19 ( figure 5 ) having a substantially cylindrical surface 21 and a central axis C.

Les objets 15 et 19 sont situés sous la machine d'impression 1 dans l'exemple représenté.The objects 15 and 19 are located under the printing machine 1 in the example shown.

L'objet 15 est par exemple porté par un porte-objet (non représenté) adapté pour déplacer l'objet 15 en translation par rapport au châssis 3 selon une direction transversale T.The object 15 is for example carried by a holder (not shown) adapted to move the object 15 in translation relative to the frame 3 in a transverse direction T.

L'objet 19 est par exemple porté par un porte-objet (non représenté) adapté pour déplacer l'objet 19 en rotation autour de l'axe central C par rapport au châssis 3. L'objet 19 a par exemple un rayon supérieur ou égal à 15 mm.The object 19 is for example carried by a slide (not shown) adapted to move the object 19 in rotation about the central axis C with respect to the frame 3. The object 19 has for example a greater radius or equal to 15 mm.

Le châssis 3 est de forme générale carrée ou rectangulaire (figure 2). Le châssis 3 s'étend selon un plan P qui est sensiblement horizontal dans l'exemple représenté. Le châssis 3 définit une ouverture 23 selon une direction V sensiblement perpendiculaire à la direction transversale T.The frame 3 is generally square or rectangular ( figure 2 ). The frame 3 extends along a plane P which is substantially horizontal in the example shown. The frame 3 defines an opening 23 in a direction V substantially perpendicular to the transverse direction T.

La direction V est sensiblement verticale dans l'exemple représenté.The direction V is substantially vertical in the example shown.

L'ouverture 23 est de forme générale carrée ou rectangulaire. L'ouverture 23 reçoit une partie du système 13 et les têtes d'impression 5, 7, 9, 11.The opening 23 is generally square or rectangular. The opening 23 receives a part of the system 13 and the print heads 5, 7, 9, 11.

Les têtes d'impressions 5, 7, 9, 11 sont par exemple analogues les unes aux autres. Par exemple, elles sont respectivement dédiées à une couleur de base afin de réaliser des impressions en quadrichromie sur les objets 15, 19.The printing heads 5, 7, 9, 11 are for example similar to each other. For example, they are respectively dedicated to a base color in order to perform four-color process prints on the objects 15, 19.

Selon une variante, les têtes d'impression 5, 7, 9, 11 sont respectivement dédiées à une même couleur, par exemple le blanc, afin de réaliser un revêtement sur les objets 15, 19.According to one variant, the printing heads 5, 7, 9, 11 are respectively dedicated to the same color, for example white, in order to effect a coating on the objects 15, 19.

Les têtes d'impressions 5, 7, 9, 11 définissent respectivement des directions d'impression D1, D2, D3, D4 (figures 3 et 5), dans lesquelles les têtes d'impressions sont respectivement propres à diriger des jets d'encre (non représentés) en direction des objets 15, 19.The printing heads 5, 7, 9, 11 respectively define printing directions D1, D2, D3, D4 ( figures 3 and 5 ), wherein the print heads are respectively adapted to direct ink jets (not shown) towards objects 15, 19.

Les jets d'encre de chacune têtes d'impressions 5, 7, 9, 11 sont sensiblement parallèles entre eux.The ink jets of each print head 5, 7, 9, 11 are substantially parallel to each other.

Le système 13 est adapté pour déplacer, par exemple collectivement, les têtes d'impression 5, 7, 9, 11 entre une pluralité de positions par rapport au châssis 3, analogues à celle représentée sur les figures 4 et 5.The system 13 is adapted to move, for example collectively, the print heads 5, 7, 9, 11 between a plurality of positions with respect to the frame 3, similar to that shown in FIGS. Figures 4 and 5 .

Comme visible sur la figure 5, quelle que soit la position considérée de ladite pluralité de positions, le système 13 est adapté pour que les directions d'impression D1, D2, D3, D4 soient distinctes les unes des autres et passent par l'axe central C.As visible on the figure 5 regardless of the position considered of said plurality of positions, the system 13 is adapted so that the printing directions D1, D2, D3, D4 are distinct from each other and pass through the central axis C.

L'axe central C est situé à une distance D du châssis 3. L'axe central C est sensiblement parallèle à une direction axiale A.The central axis C is located at a distance D from the chassis 3. The central axis C is substantially parallel to an axial direction A.

La direction axiale A est sensiblement perpendiculaire aux directions d'impression D1, D2, D3, D4. La direction axiale A est sensiblement perpendiculaire à la direction V et à la direction transversale T.The axial direction A is substantially perpendicular to the printing directions D1, D2, D3, D4. The axial direction A is substantially perpendicular to the direction V and to the transverse direction T.

La distance D est caractéristique de la position considérée parmi ladite pluralité.The distance D is characteristic of the position considered among said plurality.

Dans le mode de réalisation représenté, le système 13 est en outre adapté pour que, dans chacune des positions de ladite pluralité, comme celle représentée sur la figure 5, les directions d'impression D1, D2, D3, D4 soient distribuées angulairement autour de l'axe central C selon un pas d'angle α constant.In the embodiment shown, the system 13 is further adapted so that in each of said plurality of positions, such as that shown in FIG. figure 5 , the printing directions D1, D2, D3, D4 are angularly distributed around the central axis C at a constant pitch α.

Le système 13 est adapté pour que la distance D prenne, sélectivement, une valeur quelconque supérieure par exemple à 15 mm. Avantageusement, le système 13 est adapté pour que la distance D prenne, sélectivement, une valeur arbitrairement grande.The system 13 is adapted so that the distance D selectively takes any value, for example greater than 15 mm. Advantageously, the system 13 is adapted so that the distance D selectively takes an arbitrarily large value.

Le système 13 est en outre adapté pour placer les têtes d'impression 5, 7, 9, 11 en arc de cercle (figure 5) autour de l'objet 19.The system 13 is further adapted to place the printheads 5, 7, 9, 11 in an arc ( figure 5 ) around the object 19.

Le système 13 est en outre adapté pour placer les têtes d'impression 5, 7, 9, 11 dans au moins une position par rapport au châssis 3, représentée sur les figures 1 à 3, dans laquelle les directions d'impression D1, D2, D3, D4 sont sensiblement parallèles entre elles.The system 13 is further adapted to place the printheads 5, 7, 9, 11 in at least one position with respect to the frame 3, shown in FIGS. Figures 1 to 3 wherein the printing directions D1, D2, D3, D4 are substantially parallel to each other.

La position représentée sur la figure 3 est distincte de la pluralité de positions analogues à celle représentée sur la figure 5. On comprend que la position représentée sur la figure 3 est en fait un cas limite de la pluralité de positions. Dans ce cas limite, l'axe central C se situe à une distance D infinie du châssis 3 et le pas d'angle α est nul.The position represented on the figure 3 is distinct from the plurality of positions similar to that shown on the figure 5 . We understand that the position represented on the figure 3 is in fact a limiting case of the plurality of positions. In this limited case, the central axis C is at an infinite distance D of the frame 3 and the angle pitch α is zero.

Le système 13 est en outre adapté pour que l'angle α prenne sélectivement des valeurs comprises entre 0° et 60°, avantageusement toutes les valeurs comprises entre 0° et 60°.The system 13 is further adapted so that the angle α selectively takes values between 0 ° and 60 °, preferably all values between 0 ° and 60 °.

Comme visible sur la figure 6, le système 13 comprend quatre supports 25, 27, 29, 31 sur lesquels sont fixées respectivement les quatre têtes d'impression 5, 7, 9, 11, et quatre axes principaux 33A, 33B, 35A, 35B solidaires du châssis 3 et parallèles à la direction axiale A. Le système 13 comprend aussi quatre bielles 37A, 37B, 39A, 39B montées rotatives par rapport au châssis 3 respectivement autour des quatre axes principaux 33A, 33B, 35A, 35B, et quatre axes mobiles 41 A, 41 B, 43A, 43B sensiblement parallèles à la direction axiale A et montés rotatifs respectivement sur les bielles 37A, 37B, 39A, 39B.As visible on the figure 6 , the system 13 comprises four supports 25, 27, 29, 31 on which are fixed respectively the four printheads 5, 7, 9, 11, and four main axes 33A, 33B, 35A, 35B integral with the chassis 3 and parallel to the axial direction A. The system 13 also comprises four links 37A, 37B, 39A, 39B rotatably mounted relative to the frame 3 respectively about the four main axes 33A, 33B, 35A, 35B, and four movable axes 41A, 41B , 43A, 43B substantially parallel to the axial direction A and rotatably mounted respectively on the connecting rods 37A, 37B, 39A, 39B.

Le système 13 comprend en outre un ensemble d'entraînement 43 pour entraîner en rotation la bielle 37A autour de l'axe principal 33A par rapport au châssis 3. Le système 13 comprend aussi deux ensembles régulateur 45A, 45B pour contrôler la rotation sur lui-même de l'axe mobile 41 A, et deux ensembles de solidarisation 47A, 47B pour solidariser les quatre supports 25, 27, 29, 31 en rotation entre eux.The system 13 further comprises a drive assembly 43 for rotating the connecting rod 37A around the main axis 33A relative to the chassis 3. The system 13 also comprises two regulator assemblies 45A, 45B for controlling the rotation on it. same of the movable axis 41A, and two securing assemblies 47A, 47B for securing the four supports 25, 27, 29, 31 in rotation with each other.

Dans le système 13, les éléments référencés par des nombres suivis de la lettre A sont sensiblement symétriques des éléments référencés par des nombres suivis de la lettre B par rapport à un plan médian P', à l'exception des bielles 37A, 37B, qui ne sont pas symétriques l'une de l'autre. Aussi seuls les éléments du système 13 référencés par des nombres suivis de la lettre A seront décrits plus en détail.In the system 13, the elements referenced by numbers followed by the letter A are substantially symmetrical elements referenced by numbers followed by the letter B with respect to a median plane P ', with the exception of the connecting rods 37A, 37B, which are not symmetrical to each other. Also only the elements of the system 13 referenced by numbers followed by the letter A will be described in more detail.

Le plan médian P' est perpendiculaire à la direction axiale A.The median plane P 'is perpendicular to the axial direction A.

Les axes principaux 33A et 35A sont séparés par une distance E et se situent, dans l'exemple représenté, dans un même plan horizontal.The main axes 33A and 35A are separated by a distance E and are, in the example shown, in the same horizontal plane.

Les axes mobiles 41 A, 43A sont également situés à la distance E respectivement des axes principaux 33A et 35A.The movable axes 41A, 43A are also located at the distance E respectively from the main axes 33A and 35A.

Chacun des supports 25, 27, 29, 31 présente une forme allongée, avantageusement en berceau (figures 1 et 4), selon la direction axiale A. Les supports 25, 27, 29, 31 s'étendent respectivement entre les axes principaux 33A, 33B, 35A, 35B et les axes mobiles 41 A, 41 B, 43A, 43B selon la direction axiale A (figure 6).Each of the supports 25, 27, 29, 31 has an elongated shape, advantageously in a cradle ( figures 1 and 4 ), in the axial direction A. The supports 25, 27, 29, 31 extend respectively between the main axes 33A, 33B, 35A, 35B and the movable axes 41A, 41B, 43A, 43B in the axial direction A. ( figure 6 ).

Le support 27 est monté rotatif autour des axes principaux 33A, 33B. Le support 29 est monté rotatif autour des axes principaux 35A, 35B. Le support 25 est solidaire des axes mobiles 41 A, 41 B. Le support 31 est solidaire des axes mobiles 43A, 43B.The support 27 is rotatably mounted around the main axes 33A, 33B. The support 29 is rotatably mounted around the main axes 35A, 35B. The support 25 is integral with the movable axes 41A, 41B. The support 31 is integral with the movable axes 43A, 43B.

L'ensemble d'entraînement 43 (figures 1 et 4) comprend un moto-réducteur 49, et une bielle d'entraînement 51 couplant le moto-réducteur 49 avec la bielle 37A pour entraîner la bielle 37A en rotation autour de l'axe principal 41 A par rapport au châssis 3.The training set 43 ( figures 1 and 4 ) comprises a geared motor 49, and a drive rod 51 coupling the geared motor 49 with the connecting rod 37A to drive the connecting rod 37A in rotation about the main axis 41 A with respect to the chassis 3.

La bielle 37A comporte une extension 53 sur laquelle la bielle d'entraînement 51 est montée rotative. Les bielles 37B, 39A, 39B sont dépourvues d'une telle extension.The link 37A has an extension 53 on which the drive rod 51 is rotatably mounted. The connecting rods 37B, 39A, 39B are devoid of such an extension.

Les bielles 37A, 37B, 39A, 39B sont configurées pour maintenir les axes mobiles 41 A, 41 B, 43A, 43B respectivement à la distance E des axes principaux 33A, 33B, 35A, 35B.The links 37A, 37B, 39A, 39B are configured to maintain the movable axes 41A, 41B, 43A, 43B respectively at the distance E of the main axes 33A, 33B, 35A, 35B.

Chacun des ensembles régulateur 45A, 45B (figures 6 et 9) comprend respectivement deux pignons 55A, 55B, 57A, 57B solidaires respectivement des axes principaux 33A, 33B, 35A, 35B, et deux secteurs dentés 59A, 59B, 61 A, 61 B solidaires respectivement des axes mobiles 41 A, 41 B, 43A, 43B.Each of the regulator assemblies 45A, 45B ( figures 6 and 9 ) respectively comprises two pinions 55A, 55B, 57A, 57B secured respectively to the main axes 33A, 33B, 35A, 35B, and two toothed sectors 59A, 59B, 61A, 61B secured respectively to the movable axes 41A, 41B, 43A , 43B.

Les secteurs dentés 59A, 61 A engrènent sur les pignons 55A, 57A. Les secteurs dentés 59A, 61 A ont un diamètre égal au double du diamètre des pignons 55A, 57A.The toothed sectors 59A, 61A mesh with the gears 55A, 57A. The toothed sectors 59A, 61A have a diameter equal to twice the diameter of the gears 55A, 57A.

Les secteurs dentés 59A, 61A et les pignons 55A, 57A s'étendent respectivement entre les bielles 37A, 39A et un bord interne du châssis 3 selon la direction axiale A.The tooth sectors 59A, 61A and the pinions 55A, 57A respectively extend between the connecting rods 37A, 39A and an inner edge of the frame 3 in the axial direction A.

Chacun des ensembles de solidarisation 47A, 47B (figures 6 et 7) comprend respectivement quatre engrenages 63A, 63B, 65A, 65B, 67A, 67B, 69A, 69B respectivement solidaires des quatre supports 25, 27, 29, 31.Each of the securing assemblies 47A, 47B ( figures 6 and 7 ) comprises respectively four gears 63A, 63B, 65A, 65B, 67A, 67B, 69A, 69B respectively integral with the four supports 25, 27, 29, 31.

Les quatre engrenages 63B, 65B, 67B, 69B (figure 7) sont sensiblement de même diamètre et engrènent successivement les uns dans les autres. Par symétrie par rapport au plan P', il en va de même pour les quatre engrenages 63A, 65A, 67A, 69A.The four gears 63B, 65B, 67B, 69B ( figure 7 ) are substantially of the same diameter and meshing successively into each other. By symmetry with respect to the plane P ', the same applies to the four gears 63A, 65A, 67A, 69A.

Les engrenages 63A, 63B, 65A, 65B, 67A, 67B, 69A, 69B sont respectivement situés à des extrémités axiales opposées des supports 25, 27, 29, 31.The gears 63A, 63B, 65A, 65B, 67A, 67B, 69A, 69B are respectively located at opposite axial ends of the supports 25, 27, 29, 31.

Les engrenages 63A, 65A, 67A, 69A s'étendent respectivement entre les bielles 37A, 39A et les supports 25, 27, 29, 31 selon la direction axiale A.The gears 63A, 65A, 67A, 69A respectively extend between the connecting rods 37A, 39A and the supports 25, 27, 29, 31 in the axial direction A.

Le fonctionnement de la machine d'impression 1 va maintenant être décrit.The operation of the printing machine 1 will now be described.

La machine 1 est par exemple initialement dans la configuration représentée sur les figures 1 à 3, dans laquelle les directions d'impression D1, D2, D3, D4 sont sensiblement parallèles entre elles. Dans cette configuration, la machine d'impression 1 imprime la surface 17 de l'objet 15. L'objet 15 est déplacé en translation selon la direction transversale T par rapport au châssis 3.The machine 1 is for example initially in the configuration shown on the Figures 1 to 3 wherein the printing directions D1, D2, D3, D4 are substantially parallel to each other. In this configuration, the printing machine 1 prints the surface 17 of the object 15. The object 15 is moved in translation in the transverse direction T relative to the chassis 3.

Le changement de configuration de la machine d'impression 1 faisant passer les têtes d'impression 5, 7, 9, 11 de la position représentée sur les figures 1 à 3 à l'une des positions analogue à celle représentée sur les figures 4 et 5 est réalisé de la manière suivante.The configuration change of the printing machine 1 passing the printheads 5, 7, 9, 11 from the position shown on the Figures 1 to 3 at one of the positions similar to that shown on the Figures 4 and 5 is performed in the following manner.

Le moto-réducteur 49 entraîne la bielle d'entraînement 51 (figure 1) qui entraîne elle-même en rotation solidairement les bielles 37A, l'axe mobile 41 A, le support 5, l'axe mobile 41B et la bielle 37B autour des axes principaux 33A, 33B par rapport au châssis 3 d'un angle α visible sur la figure 11.The geared motor 49 drives the driving rod 51 ( figure 1 ) which itself drives in rotation the connecting rods 37A, the movable axis 41A, the support 5, the movable axis 41B and the connecting rod 37B around the main axes 33A, 33B with respect to the frame 3 by an angle α. visible on the figure 11 .

Les ensembles régulateurs 45A, 45B sont adaptés pour que, lorsque les bielles 37A, 37B pivotent d'un angle α par rapport au châssis 3 respectivement autour des axes principaux 33A, 33B, les axes mobiles 41 A, 41 B pivotent dans les bielles 37A, 37B d'un angle α/2 par rapport aux bielles 37A, 37B. En effet, le secteur denté 59B passe de la position représentée sur la figure 9 à celle représentée sur la figure 12. Du fait de son diamètre qui est le double de celui du pignon 55B, le secteur denté 59B pivote d'un angle α/2.The regulator assemblies 45A, 45B are adapted so that, when the connecting rods 37A, 37B pivot at an angle α with respect to the chassis 3 respectively around the main axes 33A, 33B, the movable axes 41A, 41B pivot in the connecting rods 37A 37B at an angle α / 2 relative to the connecting rods 37A, 37B. Indeed, the toothed sector 59B moves from the position represented on the figure 9 to that represented on the figure 12 . Due to its diameter which is twice that of the pinion 55B, the toothed sector 59B pivots by an angle α / 2.

Comme le pivotement d'un angle α des bielles 37A, 37B par rapport au châssis 3 et le pivotement d'un angle α/2 des axes mobiles 41 A, 41 B par rapport aux bielles 37A, 37B se combinent, il en résulte que les axes mobiles 41 A, 41B pivotent d'un angle α + α/2 par rapport au châssis 3. Ainsi, le support 25, la tête d'impression 5, les engrenages 63A, 63B et la direction d'impression D4 pivotent d'un angle α + α/2 par rapport au châssis 3.As the pivoting of an angle α of the connecting rods 37A, 37B relative to the frame 3 and the pivoting of an angle α / 2 of the movable axes 41A, 41B relative to the connecting rods 37A, 37B combine, it follows that the movable axes 41A, 41B pivot by an angle α + α / 2 with respect to the frame 3. Thus, the support 25, the print head 5, the gears 63A, 63B and the printing direction D4 are pivoted d an angle α + α / 2 with respect to the frame 3.

Les ensembles de solidarisation 47A, 47B sont adaptés pour que les supports 25, 27, 29, 31 soient solidaires les uns des autres en rotation respectivement autour des axes principaux 33A, 33B, 35A, 35B et des axes mobiles 41 A, 41 B, 43A, 43B par rapport au châssis 3. En effet, le pivotement d'un angle α/2 de l'engrenage 63B (figure 10) par rapport à la bielle 37B provoque un pivotement de l'engrenage 65B en sens inverse d'un angle a/2. Ainsi, l'engrenage 65B pivote d'un angle α - α/2 par rapport au châssis 3. La direction d'impression D2, solidaire de l'engrenage 65B, pivote aussi d'un angle α - α/2 par rapport au châssis 3.The securing assemblies 47A, 47B are adapted so that the supports 25, 27, 29, 31 are integral with each other in rotation respectively about the main axes 33A, 33B, 35A, 35B and the movable axes 41A, 41B, 43A, 43B with respect to the frame 3. Indeed, the pivoting of an angle α / 2 of the gear 63B ( figure 10 ) relative to the link 37B causes a pivoting of the gear 65B in the opposite direction of an angle a / 2. Thus, the gear 65B pivots with an angle α - α / 2 relative to the frame 3. The printing direction D2, integral with the gear 65B, also pivots by an angle α - α / 2 relative to the chassis 3.

Par symétrie du système 13, les directions d'impression D3 et D4 pivotent aussi respectivement d'un angle α - α/2 et d'un angle α + α/2 par rapport au châssis 3 (figure 10). Les directions d'impression D1, D2, D3, D4 sont séparés successivement d'un pas d'angle α.By symmetry of the system 13, the printing directions D3 and D4 also pivot respectively by an angle α - α / 2 and an angle α + α / 2 with respect to the frame 3 ( figure 10 ). The printing directions D1, D2, D3, D4 are successively separated by a pitch of angle α.

Du fait que l'axe mobile 41 A, les axes principaux 33A, 35A, et l'axe mobile 43A, sont séparés successivement par la même distance E, et que les bielles 37A, 39A ont pivoté d'angles α par rapport au châssis 3, l'axe mobile 41 A, les axes principaux 33A, 35A, et l'axe mobile 43A se distribuent en arc de cercle autour de l'axe central C. Du fait de leurs orientations respectives par rapport au châssis 3, les directions d'impressions D1, D2, D3, D4 convergent vers l'axe central C.Because the movable axis 41 A, the main axes 33A, 35A, and the movable axis 43A, are successively separated by the same distance E, and that the connecting rods 37A, 39A have pivoted angles α relative to the frame 3, the movable axis 41 A, the main axes 33A, 35A, and the movable axis 43A are distributed in an arc around the central axis C. Because of their respective orientations relative to the frame 3, the directions of impressions D1, D2, D3, D4 converge towards the central axis C.

Dans la position représentée sur les figures 4 et 5, la machine d'impression 1 imprime la surface 21 de l'objet 19 qui est déplacé en rotation autour de l'axe central C par rapport au châssis 3.In the position shown on the Figures 4 and 5 , the printing machine 1 prints the surface 21 of the object 19 which is rotated about the central axis C relative to the frame 3.

Plus l'angle α est important, plus la distance D du châssis à laquelle se trouve l'axe central C est faible. En faisant varier la valeur de l'angle α, les têtes d'impression 5, 7, 9, 11 sont collectivement déplacées de la position représentée sur les figures 4 et 5, à une autre position analogue, qui diffère par la distance du châssis 3 à laquelle se trouve l'axe central C. Lorsque l'angle α est nul, les têtes 5, 7, 9, 11 sont dans la position représentée sur les figures 1 à 3.The greater the angle α, the smaller the distance D of the frame with which the central axis C is located. By varying the value of the angle α, the print heads 5, 7, 9, 11 are collectively displaced from the position shown on the Figures 4 and 5 in another analogous position, which differs in the distance from the frame 3 to which the central axis C is located. When the angle α is zero, the heads 5, 7, 9, 11 are in the position shown in FIGS. Figures 1 to 3 .

La machine d'impression 1 s'adapte ainsi au rayon de l'objet 19, sans que les distances successives entre les axes mobiles 41 A, les axes principaux 33A, 35A, et l'axe mobile 43A n'augmentent.The printing machine 1 thus adapts to the radius of the object 19, without the successive distances between the movable axes 41 A, the main axes 33A, 35A, and the movable axis 43A increase.

Grâce aux caractéristiques décrites ci-dessus, la machine d'impression 1 est adaptée à des objets 19 cylindriques de grand diamètre ou à des objets ovales présentant localement un rayon de courbure supérieur ou égal à 15 mm, aussi bien qu'à l'objet 15 qui est plat. Comme les distances successives entre les axes mobiles 41 A, les axes principaux 33A, 35A, et l'axe mobile 43A n'augmentent pas entre les différentes positions des têtes d'impression, la machine d'impression 1 est plus petite et donc d'un coût plus modéré que les machines d'impression de l'art antérieur.Thanks to the characteristics described above, the printing machine 1 is suitable for large diameter cylindrical objects 19 or oval objects locally having a radius of curvature greater than or equal to 15 mm, as well as to the object 15 which is flat. As the successive distances between the movable axes 41A, the main axes 33A, 35A, and the movable axis 43A do not increase between the different positions of the print heads, the printing machine 1 is smaller and therefore d a more moderate cost than the printing machines of the prior art.

En référence aux figures 13 et 14, on va maintenant décrire une machine d'impression 100 qui constitue une variante de la machine d'impression 1. La machine d'impression 100 diffère de la machine d'impression 1 représentée sur les figures 1 à 12 par le fait qu'elle comprend six têtes d'impressions 105, 107, 109, 111, 113, 115 au lieu de quatre.With reference to figures 13 and 14 a printing machine 100 is now described which is a variant of the printing machine 1. The printing machine 100 differs from the printing machine 1 shown in the drawings. Figures 1 to 12 in that it comprises six print heads 105, 107, 109, 111, 113, 115 instead of four.

Les autres éléments de la machine d'impression 100 sont analogues à ceux de la machine d'impression 1. Les éléments analogues portent les mêmes références que sur les figures 1 à 12 et ne seront pas décrits à nouveau.The other elements of the printing machine 100 are similar to those of the printing machine 1. The analogous elements bear the same references as on the Figures 1 to 12 and will not be described again.

Sur les figures 13, 14, le système 13 est dans la même configuration que sur les figures 1 à 3, c'est à dire que les directions d'impression D1, D2, D3, D4 sont parallèles entre elles.On the figures 13 , 14 , the system 13 is in the same configuration as on the Figures 1 to 3 that is, the printing directions D1, D2, D3, D4 are parallel to each other.

Les têtes d'impression 105, 107, 109, 111, 113, 115 sont analogues aux têtes d'impression 5, 7, 9, 11 représentées sur les figures 1 à 3.The printheads 105, 107, 109, 111, 113, 115 are analogous to the printheads 5, 7, 9, 11 shown in FIGS. Figures 1 to 3 .

Les têtes d'impression 105, 107 sont fixées sur le support 25. Les têtes d'impression 105, 107 sont alignées par la tranche selon la direction axiale A.The printheads 105, 107 are fixed on the support 25. The printheads 105, 107 are aligned by the wafer in the axial direction A.

De même, les têtes d'impression 111, 113 sont fixées sur le support 31. Les têtes d'impression 111, 113 sont alignées par la tranche selon la direction axiale A. Les têtes d'impression 111, 113 sont situées en vis-à-vis respectivement des têtes d'impression 105, 107 selon la direction transversale T.Likewise, the printheads 111, 113 are fixed on the carrier 31. The printheads 111, 113 are aligned by the wafer in the axial direction A. The printheads 111, 113 are respectively to the printing heads 105, 107 in the transverse direction T.

Les têtes d'impression 109, 115 sont respectivement fixées sur les support 27, 29. Les têtes d'impression 109, 115 sont par exemple situées en vis-à-vis l'une de l'autre selon la direction transversale T. La tête d'impression 109 est décalée axialement par rapport à la tête d'impression 105 et la tête d'impression 107 est décalée axialement par rapport à la tête d'impression 109.The printing heads 109, 115 are respectively fixed on the supports 27, 29. The printing heads 109, 115 are for example located facing each other in the transverse direction T. printhead 109 is axially offset relative to the printhead 105 and the printhead 107 is axially offset from the printhead 109.

Ainsi la tête d'impression 109 est apte à prolonger selon la direction axiale A un motif (non représenté) appliqué sur l'objet 15 par la tête d'impression 105 lorsque l'objet 15 est déplacé transversalement par rapport au châssis 3. La tête d'impression 107 est apte à prolonger selon la direction axiale A un motif (non représenté) appliqué sur l'objet 15 par la tête d'impression 109 alors que l'objet 15 est déplacé transversalement par rapport au châssis 3.Thus the print head 109 is able to extend in the axial direction A a pattern (not shown) applied to the object 15 by the print head 105 when the object 15 is moved transversely with respect to the frame 3. The print head 107 is adapted to extend in the axial direction A pattern (not shown) applied to the object 15 by the print head 109 while the object 15 is moved transversely relative to the frame 3.

Par « apte à prolonger un motif selon une direction », on entend que la tête d'impression est adaptée pour appliquer sur l'objet un nouveau motif situé dans le prolongement du motif.By "able to extend a pattern in one direction" means that the print head is adapted to apply to the object a new pattern located in the extension of the pattern.

Les têtes d'impression 105, 107, 109 sont configurées par exemple pour imprimer des motifs (non représentés) d'une même couleur. Les têtes d'impression 105, 107, 109 sont avantageusement disposées sur les supports 25, 27 de manière à ce qu'elles impriment sur l'objet 15 des motifs contigus (non représentés) lorsque l'objet 15 est déplacé en translation par rapport au châssis 3 selon la direction transversale T.The printheads 105, 107, 109 are configured for example to print patterns (not shown) of the same color. The printing heads 105, 107, 109 are advantageously arranged on the supports 25, 27 so that they print on the object 15 contiguous patterns (not shown) when the object 15 is moved in translation relative to to the chassis 3 in the transverse direction T.

Ainsi, la machine d'impression 100 permet d'imprimer un motif sur l'objet 15 sur une extension axiale trois fois plus importante que l'extension axiale permise par la machine 1.Thus, the printing machine 100 makes it possible to print a pattern on the object 15 on an axial extension three times greater than the axial extension allowed by the machine 1.

Les têtes d'impression 111, 113, 117 sont disposées sur les supports 29, 31 de manière analogue à celle dont les têtes d'impression 105, 107, 109 sont disposées sur les supports 25, 27. Par exemple, les têtes d'impression 111, 113, 117 sont configurées pour imprimer des motifs (non représentés) d'une couleur différente de celle des têtes d'impression 105, 107, 109. Ainsi, en utilisant simultanément deux machines analogues à la machine d'impression 100, il est possible de réaliser une impression en quadrichromie sur les objets 15, 19.The printing heads 111, 113, 117 are arranged on the supports 29, 31 in a manner analogous to that of which the printing heads 105, 107, 109 are arranged on the supports 25, 27. For example, the heads of FIG. 111, 113, 117 are configured to print patterns (not shown) of a color different from that of the printheads 105, 107, 109. Thus, by simultaneously using two machines similar to the printing machine 100, it is possible to perform four-color printing on objects 15, 19.

En variante, les têtes d'impression 111, 113, 117 sont configurées pour imprimer des motifs (non représentés) d'une couleur identique à celle des têtes d'impression 105, 107, 109, par exemple du blanc.Alternatively, the printheads 111, 113, 117 are configured to print patterns (not shown) of a color identical to that of the printheads 105, 107, 109, for example, white.

Claims (11)

Machine d'impression (1 ; 100) d'un objet (15, 19), la machine d'impression (1 ; 100) comportant : - un châssis (3), - au moins quatre têtes d'impression (5, 7, 9, 11) à jets d'encre adaptées respectivement pour diriger des jets d'encre vers l'objet (15, 19) selon au moins quatre directions d'impression (D1, D2, D3, D4), et - un système (13) de maintien et de déplacement des têtes d'impression (5, 7, 9, 11) fixé sur le châssis et adapté pour déplacer les têtes d'impression (5, 7, 9, 11) entre une pluralité de positions par rapport au châssis (3),
caractérisé en ce que le système (13) est adapté pour que, dans chacune des positions de ladite pluralité, les directions d'impression (D1, D2, D3, D4) soient distinctes les unes des autres et passent par un même axe central (C), les axes centraux correspondant à la pluralité de positions étant respectivement situés à une pluralité de distances (D) du châssis (3).
Printing machine (1; 100) of an object (15, 19), the printing machine (1; 100) comprising: a chassis (3), at least four inkjet printing heads (5, 7, 9, 11) respectively adapted to direct ink jets towards the object (15, 19) in at least four directions of printing (D1 , D2, D3, D4), and a system (13) for holding and moving the printing heads (5, 7, 9, 11) fixed to the frame and adapted to move the printing heads (5, 7, 9, 11) between a plurality of positions relative to the frame (3),
characterized in that the system (13) is adapted so that, in each of said plurality of positions, the printing directions (D1, D2, D3, D4) are distinct from one another and pass through a single central axis ( C), the central axes corresponding to the plurality of positions being respectively located at a plurality of distances (D) of the frame (3).
Machine d'impression (1 ; 100) selon la revendication 1, caractérisée en ce que le système (13) est adapté pour placer les têtes d'impression (5, 7, 9, 11) dans au moins une position par rapport au châssis (3) dans laquelle les directions d'impression (D1, D2, D3, D4) sont sensiblement parallèles entre elles.Printing machine (1; 100) according to claim 1, characterized in that the system (13) is adapted to place the printing heads (5, 7, 9, 11) in at least one position relative to the frame (3) wherein the printing directions (D1, D2, D3, D4) are substantially parallel to each other. Machine d'impression (1 ; 100) selon la revendication 1 ou 2, caractérisée en ce que le système (13) est adapté pour que, dans chacune des positions de ladite pluralité, les directions d'impression (D1, D2, D3, D4) soient distribuées angulairement autour de l'axe central selon un pas d'angle (α) constant.Printing machine (1; 100) according to claim 1 or 2, characterized in that the system (13) is adapted so that in each of said plurality of positions the printing directions (D1, D2, D3, D4) are distributed angularly about the central axis at a constant pitch (α). Machine d'impression (1 ; 100) selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le système (13) comprend : - au moins quatre supports (25, 27, 29, 31) sur lesquels sont fixées respectivement les quatre têtes d'impression (5, 7, 9, 11), - au moins deux axes principaux (33A, 35A) sensiblement parallèles entre eux et solidaires du châssis (3), deux (27, 29) des quatre supports étant montés rotatifs respectivement autour des deux axes principaux (33A, 35A) par rapport au châssis (3), - au moins deux bielles (37A, 39A) montées rotatives par rapport au châssis (3) respectivement autour des deux axes principaux (33A, 35A), - au moins deux axes mobiles (41 A, 43A) sensiblement parallèles aux deux axes principaux (33A, 35A), les axes mobiles (41 A, 43A) étant montés rotatifs par rapport au châssis (3) respectivement dans les deux bielles (37A, 39A), les deux autres (25, 31) des quatre supports étant respectivement solidaires des deux axes mobiles (41 A, 43A), et - un ensemble d'entraînement (43) pour entraîner en rotation au moins l'une (37A) des bielles autour de l'un (33A) des axes principaux par rapport au châssis (3). Printing machine (1; 100) according to any one of claims 1 to 3, characterized in that the system (13) comprises: at least four supports (25, 27, 29, 31) on which the four printing heads (5, 7, 9, 11) are respectively fixed, - At least two main axes (33A, 35A) substantially parallel to each other and integral with the frame (3), two (27, 29) of the four supports being rotatably mounted respectively about the two main axes (33A, 35A) relative to the frame (3), at least two connecting rods (37A, 39A) rotatably mounted relative to the frame (3) respectively around the two main axes (33A, 35A), at least two movable axes (41A, 43A) substantially parallel to the two main axes (33A, 35A), the movable axes (41A, 43A) being rotatably mounted relative to the frame (3) respectively in the two connecting rods (37A, 39A), the other two (25, 31) of the four supports being respectively integral with the two movable axes (41A, 43A), and - A drive assembly (43) for rotating at least one (37A) connecting rods around one (33A) of the main axes relative to the frame (3). Machine d'impression (1 ; 100) selon la revendication 4, caractérisée en ce que le système (13) comprend au moins un ensemble régulateur (45A) adapté pour, lorsque la bielle (37A) entraînée par l'ensemble d'entraînement (43) pivote d'un angle α par rapport au châssis (3) autour de l'axe principal (33A), faire pivoter l'axe mobile (41 A) monté dans la bielle (37A) entraînée, l'axe mobile (41 A) pivotant d'un angle α/2 par rapport à la bielle (37A) entraînée.Printing machine (1; 100) according to claim 4, characterized in that the system (13) comprises at least one regulator assembly (45A) adapted for, when the connecting rod (37A) driven by the driving assembly ( 43) pivots at an angle α with respect to the frame (3) about the main axis (33A), pivoting the movable pin (41A) mounted in the driven rod (37A), the movable pin (41). A) pivoting at an angle α / 2 relative to the rod (37A) driven. Machine d'impression (1 ; 100) selon la revendication 5, caractérisée en ce que l'ensemble régulateur (45A) comprend au moins un pignon (55A) solidaire de l'axe principal (33A) autour duquel pivote la bielle (37A) entraînée, et au moins un secteur denté (57A) solidaire de l'axe mobile (41A) monté dans la bielle entraînée (37A), le secteur denté (57A) engrenant sur le pignon (55A) et ayant un diamètre égal au double du diamètre du pignon (55A).Printing machine (1; 100) according to claim 5, characterized in that the regulator assembly (45A) comprises at least one pinion (55A) integral with the main axis (33A) around which pivots the connecting rod (37A) driven, and at least one toothed sector (57A) integral with the movable pin (41A) mounted in the driven rod (37A), the toothed sector (57A) meshing with the pinion (55A) and having a diameter equal to twice the pinion diameter (55A). Machine d'impression (1 ; 100) selon l'une quelconque des revendications 4 à 6, caractérisée en ce que le système (13) comprend au moins un ensemble de solidarisation (47A) adapté pour que les supports (25, 27, 29, 31) soient solidaires les uns des autres en rotation respectivement autour des deux axes principaux (33A, 35A) et des deux axes mobiles (41 A, 43A) par rapport au châssis (3).Printing machine (1; 100) according to any one of claims 4 to 6, characterized in that the system (13) comprises at least one fastening assembly (47A) adapted for the supports (25, 27, 29 , 31) are integral with each other in rotation respectively about the two main axes (33A, 35A) and the two movable axes (41A, 43A) relative to the frame (3). Machine d'impression (1 ; 100) selon la revendication 7, caractérisée en ce que l'ensemble de solidarisation (47A) comprend au moins quatre engrenages (63A, 65A, 67A, 69A) respectivement solidaires des quatre supports (25, 27, 29, 31), les quatre engrenages (63A, 65A, 67A, 69A) étant sensiblement de même diamètre et engrenant successivement les uns dans les autres.Printing machine (1; 100) according to claim 7, characterized in that the securing assembly (47A) comprises at least four gears (63A, 65A, 67A, 69A) respectively integral with the four supports (25, 27, 29, 31), the four gears (63A, 65A, 67A, 69A) being substantially of the same diameter and meshing successively into each other. Machine d'impression (100) selon l'une quelconque des revendications 1 à 8, caractérisée en ce que le système (13) est configuré pour qu'au moins deux (105, 109) des têtes d'impression (105, 107, 109, 111, 113, 115) soient décalées l'une (105) par rapport à l'autre (109) selon l'axe central (C), de sorte que l'une (109) desdites deux têtes est apte à prolonger selon l'axe central (C) un motif appliqué sur l'objet (15, 19) par l'autre (105) des deux têtes d'impression.Printing machine (100) according to one of Claims 1 to 8, characterized in that the system (13) is configured so that at least two (105, 109) of the printing heads (105, 107, 109, 111, 113, 115) are offset (105) relative to each other (109) along the central axis (C), so that one (109) of said two heads is adapted to extend along the central axis (C) a pattern applied on the object (15, 19) by the other (105) of the two printing heads. Machine d'impression (100) selon la revendication 9, caractérisée en ce que le système est configuré pour que lesdites deux têtes d'impression (105, 109) soient décalées l'une (105) par rapport à l'autre (109) selon l'axe central (C) d'une distance telle que les lesdites deux têtes d'impression (105, 109) soient aptes à imprimer sur l'objet (15, 19) des motifs contigus.Printing machine (100) according to claim 9, characterized in that the system is configured so that said two print heads (105, 109) are offset (105) relative to each other (109) along the central axis (C) of a distance such that said two print heads (105, 109) are able to print on the object (15, 19) of the contiguous patterns. Machine d'impression (1 ; 100) selon l'une quelconque des revendications 1 à 10, caractérisée en ce que le système (13) est adapté pour déplacer collectivement les têtes d'impression (5, 7, 9, 11) entre les positions de ladite pluralité de positions.Printing machine (1; 100) according to any one of claims 1 to 10, characterized in that the system (13) is adapted to collectively move the printing heads (5, 7, 9, 11) between the positions of said plurality of positions.
EP14178062.7A 2013-07-31 2014-07-22 Machine for printing an object comprising print heads with tiltable ink jets Withdrawn EP2842756A1 (en)

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WO2011095865A2 (en) * 2010-02-02 2011-08-11 Vincenzo Palumbo A device and method for ink-jet printing on surfaces exhibiting reliefs or recesses

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FR3009235A1 (en) 2015-02-06
US20150035897A1 (en) 2015-02-05
US9162503B2 (en) 2015-10-20

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