EP3466701A1 - Machine for printing a plurality of objects - Google Patents

Machine for printing a plurality of objects Download PDF

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Publication number
EP3466701A1
EP3466701A1 EP18199448.4A EP18199448A EP3466701A1 EP 3466701 A1 EP3466701 A1 EP 3466701A1 EP 18199448 A EP18199448 A EP 18199448A EP 3466701 A1 EP3466701 A1 EP 3466701A1
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EP
European Patent Office
Prior art keywords
printing
frame
turret
axis
objects
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18199448.4A
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German (de)
French (fr)
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EP3466701B1 (en
Inventor
Jean-Louis Dubuit
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Machines Dubuit SAS
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Individual
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Publication of EP3466701A1 publication Critical patent/EP3466701A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40731—Holders for objects, e. g. holders specially adapted to the shape of the object to be printed or adapted to hold several objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0045—Guides for printing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
    • B41J3/543—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation

Definitions

  • the invention also relates to an assembly of such a printing machine and such a plurality of objects.
  • the invention finally relates to a corresponding method.
  • An ink jet printhead comprises on its underside rows of nozzles.
  • the spacing between each nozzle is equal to the definition, in dots per inch (DPI or dot per inch ).
  • the lower face comprises for example four rows of ninety nozzles each.
  • the two outermost rows are for example spaced 2.82 mm, while the nozzles, in the four rows, are spaced apart from each other by 0.0705 mm, which leads to a definition of 360 DPI.
  • the length of a row of nozzles is for example about 72 mm and the width of the lower face is for example 17.2 mm.
  • the width of the underside is the thickness of the print head.
  • the alignment direction of the ink jets extends in the direction of the length of the underside.
  • the document US-A-3,521,296 discloses a machine having a main frame on which is fixed a second frame having means for moving the object to be printed.
  • This second frame is pivotable relative to the main frame. In this way, by tilting the second frame relative to the main frame, it is possible to tilt the axis of revolution of the conical objects relative to the horizontal.
  • the objects are therefore all inclined under the different printing stations and have an upper generatrix in a horizontal plane corresponding to the different planes of the printing screens.
  • An object of the invention is therefore to overcome all or part of the above disadvantage, by providing a printing machine facilitating printing, especially on objects having an outer surface at least partly of revolution, in particular frustoconical or cylindrical.
  • the invention relates to a printing machine according to claim 1.
  • the printing machine comprises one or more of the features corresponding to claims 2 to 8, taken alone or in any technically possible combination.
  • the subject of the invention is also an assembly according to claim 9.
  • the invention also relates to a printing method according to claim 10.
  • the assembly 1 comprises a plurality of objects 5 to be printed, and a printing machine 6 for printing the objects.
  • Each object 5 has an outer surface 7, for example substantially of revolution about an object axis ⁇ ( figures 2 and 3 ).
  • Each object 5 is for example a bottle or a cup.
  • the outer surface 7 is for example frustoconical.
  • the outer surface 7 forms an angle ⁇ with the object axis ⁇ which defines the conicity of the objects 5.
  • the angle ⁇ is for example non-zero and less than or equal to 8.5 °.
  • the outer surface 7 is cylindrical.
  • the angle ⁇ is then substantially zero.
  • the object 5 does not have an outer surface completely of revolution.
  • the object 5 has a handle (not shown).
  • the object 5 is an object, for example flat, having at least one plane face to be printed.
  • the printing machine 6 comprises a frame 9, a turret support 11 adjustable in inclination around a pivot axis ⁇ 1 with respect to the frame, and a turret 13 rotatably mounted and indexed with respect to the frame around an axis of rotation. rotation ⁇ 2.
  • the printing machine 6 also comprises two processing stations 15, 17, and a printing station 19 fixed on the frame 9.
  • the frame 9 comprises a base 21 placed or fixed on a floor.
  • the frame 9 also comprises two uprights 23, 25 and a beam 27 mechanically connecting the two uprights to form a gantry 29.
  • the uprights 23, 25 are advantageously vertical.
  • the beam 27 extends for example along the pivot axis ⁇ 1, which is advantageously substantially horizontal.
  • the treatment stations 15, 17 are for example fixed on the beam 27 and adjustable in position relative to the frame 9.
  • the treatment station 15 is for example a plasma pretreatment station and comprises a plasma torch 31 adapted to be directed towards one of the objects 5.
  • the treatment station 15 is advantageously adjustable in position relative to the frame 9 so as to to have an adequate position relative to the turret 13.
  • the treatment station 17 is for example a drying station advantageously comprising a reactor 33 with UV (ultraviolet) radiation.
  • the printing station 19 comprises a support beam 35 fixed to the frame 9 and adjustable in height with respect thereto, a carriage 37 ( figures 2 and 3 ) slidably mounted on the support beam according to the pivot axis ⁇ 1, a plate 39 integral with the carriage, and a plurality of ink jet printing heads 41 mounted on the plate 39 adapted to eject ink jets 43 in a DD printing direction on the outer surface 7.
  • the print heads 41 are six in number, for example an impression of one of the four-color photo body type: yellow, magenta, cyan, black. Still in the example shown, two additional printheads can print in white for one, and deposit an overprint varnish for the other.
  • the printing station 19 comprises only four printheads, for a quadrichromy strict or less.
  • the printing direction DD is advantageously vertical.
  • Print heads 41 are analogous to one another and of the type described in the preamble of the present application, that is to say, adapted to spit the ink jets 43 from an advantageously substantially horizontal ejection plane. , the ink jets 43 of the same printing head 41 forming rows extending in a substantially horizontal alignment direction A.
  • the printing station 19 also includes drive members known in themselves and which will not be detailed here, to adjust the height of the print head 41 relative to the frame 9, and move the carriage 37 relative to the position of the support 35 along the pivot axis ⁇ 1.
  • the plate 39 supporting the printing heads is slidably mounted on a chair 40 ( figure 2 ) in particular according to the alignment direction A. This allows printing on objects 5 whose outer surface 7 has an extension greater than that of the printing heads 41 in the alignment direction A.
  • the turret support 11 advantageously has a cradle shape ( figure 1 ).
  • the turret support 11 comprises a central portion 45 on which the turret 13 is rotatably mounted about the axis of rotation ⁇ 2, and two end portions 47, 49 according to the pivot axis ⁇ 1 fixed on the uprights 23, 25.
  • Each of the end portions 47, 49 comprises for example a cylindrical pin 51, 53 respectively movable in a clip 55, 57 of the uprights 23, 25.
  • the machine 6 also comprises one or more members 59 for locking the turret support 11 in a desired inclination ⁇ about the pivot axis ⁇ 1 with respect to the frame 9.
  • the turret 13 comprises four object carriers 61A, 61B, 61C, 61D regularly spaced at 90 ° around the axis of rotation ⁇ 2 and adapted to carry the objects 5 and advantageously rotate respectively about four axes D1 , D2, D3, D4.
  • the turret 13 is movable successively between four positions relative to the frame 9, which are deduced from each other by a rotation of 90 ° about the axis of rotation ⁇ 2.
  • the slide 61A carries one of the objects 5 opposite the treatment station 15.
  • the slide 61B carries another of the objects 5 opposite the printing station 19.
  • the slide 61C carries another of objects 5 opposite the treatment station 17, that is to say in the reactor 33.
  • the object holder 61D is located opposite any treatment station and allows the loading or unloading of objects 5.
  • the turret 13 is adapted to carry each of the objects 5 successively from a loading point to an unloading point after having made a complete revolution, passing under the processing station 15, and then under the printing station 19 , and finally in the treatment station 17.
  • the object holder axes D1, D2, D3, D4 are for example defined respectively by a mandrel of the slides 61A, 61B, 61C, 61D.
  • the object holder axes D1, D2, D3, D4 are defined by a base and a tip of the object carriers.
  • the object holder pins D1 to D4 are perpendicular to the axis of rotation ⁇ 2.
  • the turret 13 comprises a number of object holders (not shown) of eight, twelve, etc., that is to say a multiple of four strictly greater than four, which is can write as 4 ( n + 2), where n is a natural integer.
  • the object holders are regularly spaced angularly around the axis of rotation ⁇ 2.
  • the pivot axis ⁇ 1 remains perpendicular to the axis of the object carrying object 5 located next to the printing station 19, and coincides with the two axes of the two object holders diametrically opposite with respect to the rotation axis ⁇ 2 and located next to the processing stations 15, 17. This allows to implement additional processing stations (not shown), located angularly between any two consecutive object-holders taken among the 61A 61D shown in the figures.
  • the relative positions of the processing stations 15, 17 and the printing station 19 relative to the frame 9 are first adjusted.
  • the inclination ⁇ of the turret support 11 is advantageously adjusted so that an upper generatrix G of the object 5 carried by the object-holder located opposite the printing station 19 (here the object-holder 61B) is parallel to the alignment direction A.
  • the inclination ⁇ is substantially equal to the angle ⁇ defining the conicity of the objects 5.
  • the turret 13 is advantageously not inclined, that is to say that the axis of rotation ⁇ 2 is substantially vertical and the angle ⁇ is substantially zero.
  • each object 5 is advantageously held stationary by the object holder concerned next to the printing station 19, and can receive several inks, for example four, in a single pass to the printing station.
  • the objects 5 are successively loaded on the free slide (the object holder 61D in the figures), while the object 5 carried by the slide 61A is pre-treated with plasma, which the object 5 carried by the slide 61B is printed successively by the printing heads 41 of the printing station 19, and the object carried by the slide 61C undergoes drying in the treatment station 17 ultraviolet light.
  • each of the objects 5 is successively loaded on one of the slides 61A to 61D, then brought opposite the processing station 15 by a 90 ° rotation of the turret 13 about the axis of rotation ⁇ 2 relative to to the frame 9, then brought under the printing heads 41 of the printing station 19 by a further rotation of 90 ° of the turret, then further brought into the reactor 33 for drying by a new rotation of 90 ° of the turret , and finally brought back to its original position by a last rotation of 90 ° of the turret, position in which it can be removed from its object-holder.

Abstract

Machine d'impression (6) pour imprimer une pluralité d'objets (5), chaque objet présentant une surface externe (7) à imprimer, la machine d'impression comprenant : - un châssis (9), et au moins deux postes de traitement (15, 17) et un poste d'impression (19) fixés sur le châssis (9), le poste d'impression (19) comportant au moins une tête d'impression (41) à jet d'encre adaptée pour éjecter des jets d'encre selon une direction d'impression (DD), et - une tourelle (13) montée rotative par rapport au châssis autour d'un axe de rotation (”2), et comportant au moins quatre porte-objets espacés régulièrement à 90° autour de l'axe de rotation, et adaptés pour porter les objets (5) et les faire tourner autour de quatre axes de porte-objet (D1-D4) perpendiculaires à l'axe de rotation, la tourelle étant mobile successivement entre au moins quatre positions, au moins un des porte-objets étant regard du poste d'impression dans chacune des positions, tandis que deux autres des porte-objets sont en regard des postes de traitement. La machine d'impression comprend un support de tourelle (11) réglable en inclinaison (²) autour d'un axe de pivotement (”1) par rapport au châssis, l'axe de pivotement étant, d'une part, perpendiculaire à l'axe de porte-objet (D2) du porte-objet situé en regard du poste d'impression, et, d'autre part, confondu avec les axes de porte-objet (D1, D3) des deux autres des porte-objets situés en regard des postes de traitement.Printing machine (6) for printing a plurality of objects (5), each object having an outer surface (7) to be printed, the printing machine comprising: - a frame (9), and at least two processing stations (15, 17) and a printing station (19) fixed to the frame (9), the printing station (19) comprising at least one printing head ink jet printing (41) adapted to eject ink jets along a printing direction (DD), and - a turret (13) rotatably mounted relative to the frame around an axis of rotation (”2), and comprising at least four object holders spaced regularly at 90° around the axis of rotation, and adapted to carry the objects (5) and rotating them around four object-holder axes (D1-D4) perpendicular to the axis of rotation, the turret being movable successively between at least four positions, at least one of the object-holders being facing the printing station in each of the positions, while two other object holders are facing the processing stations. The printing machine comprises a turret support (11) adjustable in inclination (²) about a pivot axis (”1) relative to the frame, the pivot axis being, on the one hand, perpendicular to the object-holder axis (D2) of the object-holder located opposite the printing station, and, on the other hand, coinciding with the object-holder axes (D1, D3) of the other two of the object-holders located next to the processing stations.

Description

La présente invention concerne une machine d'impression pour imprimer une pluralité d'objets présentant une surface externe à imprimer, la machine d'impression comprenant :

  • un châssis, et au moins deux postes de traitement et au moins un poste d'impression fixés sur le châssis, le poste d'impression comportant au moins une tête d'impression à jet d'encre adaptée pour éjecter des jets d'encre selon une direction d'impression, et pour que les jets d'encre soient alignés selon une direction d'alignement perpendiculaire à la direction d'impression, et
  • une tourelle montée rotative par rapport au châssis autour d'un axe de rotation, et comportant au moins quatre porte-objets espacés régulièrement à 90° autour de l'axe de rotation, et adaptés pour porter les objets et pour faire tourner les objets autour de quatre axes de porte-objet, la tourelle étant mobile successivement entre au moins quatre positions par rapport au châssis, au moins un des porte-objets étant regard du poste d'impression dans chacune des positions, tandis que deux autres des porte-objets sont en regard des postes de traitement.
The present invention relates to a printing machine for printing a plurality of objects having an external surface to be printed, the printing machine comprising:
  • a frame, and at least two processing stations and at least one printing station fixed to the frame, the printing station comprising at least one inkjet printing head adapted to eject ink jets according to a printing direction, and for the ink jets to be aligned in an alignment direction perpendicular to the printing direction, and
  • a turret rotatably mounted relative to the frame about an axis of rotation, and having at least four slides regularly spaced 90 ° about the axis of rotation, and adapted to carry the objects and to rotate the objects around of four shafts of object, the turret being movable successively between at least four positions relative to the frame, at least one of the object holders being a view of the printing station in each of the positions, while two others of the object holders are next to treatment posts.

L'invention concerne également un ensemble d'une telle machine d'impression et d'une telle pluralité d'objets.The invention also relates to an assembly of such a printing machine and such a plurality of objects.

L'invention concerne enfin un procédé correspondant.The invention finally relates to a corresponding method.

Une tête d'impression à jet d'encre comprend sur sa face inférieure des rangées de buses. L'écartement entre chaque buse est égal à la définition, en points par pouce (DPI ou encore dot per inch en anglais). La face inférieure comporte par exemple quatre rangées de quatre-vingt-dix buses chacune. Les deux rangées les plus extérieures sont par exemple espacées de 2,82 mm, tandis que les buses, dans les quatre rangées, sont espacées entre elles de 0,0705 mm, ce qui conduit à une définition de 360 DPI.An ink jet printhead comprises on its underside rows of nozzles. The spacing between each nozzle is equal to the definition, in dots per inch (DPI or dot per inch ). The lower face comprises for example four rows of ninety nozzles each. The two outermost rows are for example spaced 2.82 mm, while the nozzles, in the four rows, are spaced apart from each other by 0.0705 mm, which leads to a definition of 360 DPI.

La longueur d'une rangée de buses est par exemple d'environ 72 mm et la largeur de la face inférieure est par exemple de 17,2 mm. La largeur de la face inférieure correspond à l'épaisseur de la tête d'impression. La direction d'alignement des jets d'encre s'étend dans le sens de la longueur de la face inférieure.The length of a row of nozzles is for example about 72 mm and the width of the lower face is for example 17.2 mm. The width of the underside is the thickness of the print head. The alignment direction of the ink jets extends in the direction of the length of the underside.

Pour imprimer des objets de révolution, il est connu de diriger les jets d'encre vers une génératrice de l'objet, et de faire tourner cet objet autour de son axe de révolution.To print objects of revolution, it is known to direct the jets of ink to a generator of the object, and to rotate this object around its axis of revolution.

Dans le domaine des machines d'impression sur objets coniques, il est connu de faire en sorte, au poste d'impression, d'incliner l'objet de telle manière que sa génératrice supérieure soit horizontale. Ceci qui permet au moyen d'impression, en l'occurrence un cadre de sérigraphie, d'être dans un plan horizontal, et à l'encre se trouvant dans l'écran de sérigraphie de se répartir uniformément sur la surface à imprimer. Ceci est un gage de bonne impression.In the field of conical printing machines, it is known to cause the printing station to tilt the object so that its upper generatrix is horizontal. This allows the printing means, in this case a silkscreen frame, to be in a horizontal plane, and the ink in the screen serigraphy to spread evenly over the surface to be printed. This is a guarantee of good impression.

Ainsi, le document US-A-3 521 296 décrit une machine possédant un châssis principal sur lequel est fixé un second châssis comportant des moyens de déplacement de l'objet à imprimer. Ce second châssis est susceptible de pivoter par rapport au châssis principal. De cette manière, en inclinant le second châssis par rapport au châssis principal, il est possible d'incliner l'axe de révolution des objets coniques par rapport à l'horizontale. Les objets sont donc tous inclinés sous les différents postes d'impression et présentent une génératrice supérieure dans un plan horizontal correspondant aux différents plans des écrans d'impression.Thus, the document US-A-3,521,296 discloses a machine having a main frame on which is fixed a second frame having means for moving the object to be printed. This second frame is pivotable relative to the main frame. In this way, by tilting the second frame relative to the main frame, it is possible to tilt the axis of revolution of the conical objects relative to the horizontal. The objects are therefore all inclined under the different printing stations and have an upper generatrix in a horizontal plane corresponding to the different planes of the printing screens.

Il aussi connu, dans le domaine de l'impression directe des objets, de convoyer les objets à décorer non par un convoyeur linéaire, comme décrit dans le document mentionné ci-dessus, mais par un convoyeur circulaire sous la forme d'une tourelle porte-objet rotative amenant les objets sous les différents postes d'impression situés tangentiellement par rapport à la trajectoire circulaire de la tourelle. Dans ce cas, il n'est pas possible d'incliner le convoyeur et d'obtenir que les génératrices supérieures des objets coniques soient dans un plan horizontal. En effet, en raison de la disposition circulaire des objets sur la tourelle, seul un des objets possède une génératrice supérieure dans un plan horizontal. Dans ce cas, selon une technique décrite dans US-A-3 096 709 , chaque porte-objet, et non pas un seul, est incliné par rapport à la tourelle, comme illustré sur la figure 47 de ce document.He also known, in the field of the direct printing of objects, to convey the objects to be decorated not by a linear conveyor, as described in the document mentioned above, but by a circular conveyor in the form of a turret door rotary object bringing the objects under the various printing stations located tangentially with respect to the circular trajectory of the turret. In this case, it is not possible to tilt the conveyor and to obtain that the upper generatrices of the conical objects are in a horizontal plane. Indeed, because of the circular disposition of the objects on the turret, only one of the objects has an upper generatrix in a horizontal plane. In this case, according to a technique described in US-A-3,096,709 each holder, not one, is inclined relative to the turret, as shown in Figure 47 of this document.

Toutefois, de telles machines d'impression sont complexes et les inclinaisons des différents porte-objets sont délicates à régler, et très difficile, car, à chaque changement de type d'objet à imprimer, il faut régler chaque porte-objet d'une manière identique pour satisfaire à la précision requise par l'impression jet d'encre, de l'ordre de de 0,035 mm.However, such printing machines are complex and the inclinations of the various slides are difficult to regulate, and very difficult because, at each change of the type of object to be printed, it is necessary to adjust each slide of a identical way to meet the accuracy required by the inkjet printing, of the order of 0.035 mm.

Un but de l'invention est donc de pallier tout ou partie de l'inconvénient ci-dessus, en proposant une machine d'impression facilitant l'impression notamment sur des objets présentant une surface externe au moins en partie de révolution, notamment tronconique ou cylindrique.An object of the invention is therefore to overcome all or part of the above disadvantage, by providing a printing machine facilitating printing, especially on objects having an outer surface at least partly of revolution, in particular frustoconical or cylindrical.

A cet effet, l'invention concerne une machine d'impression selon la revendication 1.For this purpose, the invention relates to a printing machine according to claim 1.

Selon des modes particuliers de réalisation, la machine d'impression comprend l'une ou plusieurs des caractéristiques correspondant aux revendications 2 à 8, prise(s) isolément ou selon toutes les combinaisons techniquement possibles.According to particular embodiments, the printing machine comprises one or more of the features corresponding to claims 2 to 8, taken alone or in any technically possible combination.

L'invention a également pour objet un ensemble selon la revendication 9.The subject of the invention is also an assembly according to claim 9.

L'invention a aussi pour objet un procédé d'impression selon la revendication 10.The invention also relates to a printing method according to claim 10.

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, de trois-quarts, d'un ensemble selon l'invention,
  • la figure 2 est une vue de côté de l'ensemble représenté sur la figure 1, et
  • la figure 3 est une vue arrière partielle de l'ensemble représenté sur les figures 1 et 2.
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, three-quarters, of an assembly according to the invention,
  • the figure 2 is a side view of the set shown on the figure 1 , and
  • the figure 3 is a partial rear view of the assembly shown on the figures 1 and 2 .

En référence aux figures 1 à 3, on décrit un ensemble 1 selon l'invention.With reference to Figures 1 to 3 an assembly 1 according to the invention is described.

L'ensemble 1 comprend une pluralité d'objets 5 à imprimer, et une machine d'impression 6 pour imprimer les objets.The assembly 1 comprises a plurality of objects 5 to be printed, and a printing machine 6 for printing the objects.

Les objets 5 sont analogues les uns aux autres. Chaque objet 5 possède une surface externe 7, par exemple sensiblement de révolution autour d'un axe d'objet Δ (figures 2 et 3). Chaque objet 5 est par exemple un flacon ou une tasse.The objects are analogous to each other. Each object 5 has an outer surface 7, for example substantially of revolution about an object axis Δ ( figures 2 and 3 ). Each object 5 is for example a bottle or a cup.

La surface externe 7 est par exemple tronconique. La surface externe 7 forme un angle α avec l'axe d'objet Δ qui définit la conicité des objets 5.The outer surface 7 is for example frustoconical. The outer surface 7 forms an angle α with the object axis Δ which defines the conicity of the objects 5.

L'angle α est par exemple non nul et inférieur ou égal à 8,5°.The angle α is for example non-zero and less than or equal to 8.5 °.

En variante (non représentée), la surface externe 7 est cylindrique. L'angle α est alors sensiblement nul.Alternatively (not shown), the outer surface 7 is cylindrical. The angle α is then substantially zero.

Selon une autre variante encore, l'objet 5 n'a pas une surface externe complètement de révolution. Par exemple, l'objet 5 comporte une anse (non représentée).According to another variant, the object 5 does not have an outer surface completely of revolution. For example, the object 5 has a handle (not shown).

Selon encore une autre variante (non représentée), l'objet 5 est un objet, par exemple plat, présentant au moins une face plane à imprimer.According to yet another variant (not shown), the object 5 is an object, for example flat, having at least one plane face to be printed.

La machine d'impression 6 comprend un châssis 9, un support de tourelle 11 réglable en inclinaison autour d'un axe de pivotement Δ1 par rapport au châssis, et une tourelle 13 montée rotative et indexée par rapport au châssis autour d'un axe de rotation Δ2. La machine d'impression 6 comprend aussi deux postes de traitement 15, 17, et un poste d'impression 19 fixés sur le châssis 9.The printing machine 6 comprises a frame 9, a turret support 11 adjustable in inclination around a pivot axis Δ1 with respect to the frame, and a turret 13 rotatably mounted and indexed with respect to the frame around an axis of rotation. rotation Δ2. The printing machine 6 also comprises two processing stations 15, 17, and a printing station 19 fixed on the frame 9.

Le châssis 9 comprend un socle 21 posé ou fixé sur un sol. Le châssis 9 comprend également deux montants 23, 25 et une poutre 27 reliant mécaniquement les deux montants pour former un portique 29.The frame 9 comprises a base 21 placed or fixed on a floor. The frame 9 also comprises two uprights 23, 25 and a beam 27 mechanically connecting the two uprights to form a gantry 29.

Les montants 23, 25 sont avantageusement verticaux.The uprights 23, 25 are advantageously vertical.

La poutre 27 s'étend par exemple selon l'axe de pivotement Δ1, qui est avantageusement sensiblement horizontal.The beam 27 extends for example along the pivot axis Δ1, which is advantageously substantially horizontal.

Les postes de traitement 15, 17 sont par exemple fixés sur la poutre 27 et réglables en position par rapport au châssis 9.The treatment stations 15, 17 are for example fixed on the beam 27 and adjustable in position relative to the frame 9.

Le poste de traitement 15 est par exemple un poste de prétraitement par plasma et comprend une torche à plasma 31 adaptée pour être dirigée vers l'un des objets 5. Le poste de traitement 15 est avantageusement réglable en position par rapport au châssis 9 de manière à avoir une position adéquate par rapport à la tourelle 13.The treatment station 15 is for example a plasma pretreatment station and comprises a plasma torch 31 adapted to be directed towards one of the objects 5. The treatment station 15 is advantageously adjustable in position relative to the frame 9 so as to to have an adequate position relative to the turret 13.

Le poste de traitement 17 est par exemple un poste de séchage comportant avantageusement un réacteur 33 à rayons UV (ultraviolets).The treatment station 17 is for example a drying station advantageously comprising a reactor 33 with UV (ultraviolet) radiation.

Le poste d'impression 19 comprend une poutre de support 35 fixée sur le châssis 9 et réglable en hauteur par rapport à celui-ci, un chariot 37 (figures 2 et 3) monté coulissant sur la poutre de support selon l'axe de pivotement Δ1, une platine 39 solidaire du chariot, et une pluralité de têtes d'impression 41 à jet d'encre montés sur la platine 39 adaptées pour éjecter des jets d'encre 43 selon une direction d'impression DD sur la surface externe 7.The printing station 19 comprises a support beam 35 fixed to the frame 9 and adjustable in height with respect thereto, a carriage 37 ( figures 2 and 3 ) slidably mounted on the support beam according to the pivot axis Δ1, a plate 39 integral with the carriage, and a plurality of ink jet printing heads 41 mounted on the plate 39 adapted to eject ink jets 43 in a DD printing direction on the outer surface 7.

Dans l'exemple représenté, les têtes d'impression 41 sont au nombre de six, par exemple une impression d'un des corps de type photo en quadrichromie : jaune, magenta, cyan, noir. Toujours dans l'exemple représenté, deux têtes d'impression supplémentaires permettent d'imprimer en blanc pour l'une, et de déposer un vernis de surimpression pour l'autre.In the example shown, the print heads 41 are six in number, for example an impression of one of the four-color photo body type: yellow, magenta, cyan, black. Still in the example shown, two additional printheads can print in white for one, and deposit an overprint varnish for the other.

Selon une variante non représentée, le poste d'impression 19 ne comprend que quatre têtes d'impression, pour une quadrichromie stricte, voire moins. La direction d'impression DD est avantageusement verticale.According to a variant not shown, the printing station 19 comprises only four printheads, for a quadrichromy strict or less. The printing direction DD is advantageously vertical.

Des têtes d'impression 41 sont analogues entre elles et du type décrit dans le préambule de la présente demande, c'est-à-dire adaptées pour cracher les jets d'encre 43 à partir d'un plan d'éjection avantageusement sensiblement horizontal, les jets d'encre 43 d'une même tête d'impression 41 formant des rangées s'étendant selon une direction d'alignement A sensiblement horizontale.Print heads 41 are analogous to one another and of the type described in the preamble of the present application, that is to say, adapted to spit the ink jets 43 from an advantageously substantially horizontal ejection plane. , the ink jets 43 of the same printing head 41 forming rows extending in a substantially horizontal alignment direction A.

Le poste d'impression 19 comprend aussi des organes d'entraînement connus en eux-mêmes et qui ne seront pas détaillés ici, pour régler la hauteur des têtes d'impression 41 par rapport au châssis 9, et déplacer le chariot 37 par rapport à la position du support 35 selon l'axe de pivotement Δ1.The printing station 19 also includes drive members known in themselves and which will not be detailed here, to adjust the height of the print head 41 relative to the frame 9, and move the carriage 37 relative to the position of the support 35 along the pivot axis Δ1.

Avantageusement, la platine 39 supportant les têtes d'impression est montée coulissante sur une chaise 40 (figure 2) selon la direction d'alignement A. Ceci permet notamment d'imprimer sur des objets 5 dont la surface externe 7 présente une extension supérieure à celle des têtes d'impression 41 selon la direction d'alignement A.Advantageously, the plate 39 supporting the printing heads is slidably mounted on a chair 40 ( figure 2 ) in particular according to the alignment direction A. This allows printing on objects 5 whose outer surface 7 has an extension greater than that of the printing heads 41 in the alignment direction A.

Le support de tourelle 11 présente avantageusement une forme en berceau (figure 1). Le support de tourelle 11 comprend une partie centrale 45 sur laquelle la tourelle 13 est montée rotative autour de l'axe de rotation Δ2, et deux parties extrémales 47, 49 selon l'axe de pivotement Δ1 fixées sur les montants 23, 25.The turret support 11 advantageously has a cradle shape ( figure 1 ). The turret support 11 comprises a central portion 45 on which the turret 13 is rotatably mounted about the axis of rotation Δ2, and two end portions 47, 49 according to the pivot axis Δ1 fixed on the uprights 23, 25.

Chacune des parties extrémales 47, 49 comprend par exemple un tenon cylindrique 51, 53 respectivement mobile dans une attache 55, 57 des montants 23, 25.Each of the end portions 47, 49 comprises for example a cylindrical pin 51, 53 respectively movable in a clip 55, 57 of the uprights 23, 25.

La machine 6 comprend également un ou plusieurs organes 59 de blocage du support de tourelle 11 dans une inclinaison β voulue autour de l'axe de pivotement Δ1 par rapport au châssis 9.The machine 6 also comprises one or more members 59 for locking the turret support 11 in a desired inclination β about the pivot axis Δ1 with respect to the frame 9.

La tourelle 13 comprend quatre porte-objets 61A, 61B, 61C, 61D espacés régulièrement à 90° autour de l'axe de rotation Δ2 et adaptés pour porter les objets 5 et avantageusement les faire tourner respectivement autour de quatre axes de porte-objet D1, D2, D3, D4. La tourelle 13 est mobile successivement entre quatre positions par rapport au châssis 9, qui se déduisent les unes des autres par une rotation de 90° autour de l'axe de rotation Δ2.The turret 13 comprises four object carriers 61A, 61B, 61C, 61D regularly spaced at 90 ° around the axis of rotation Δ2 and adapted to carry the objects 5 and advantageously rotate respectively about four axes D1 , D2, D3, D4. The turret 13 is movable successively between four positions relative to the frame 9, which are deduced from each other by a rotation of 90 ° about the axis of rotation Δ2.

Dans la position représentée sur les figures 1 à 3, le porte-objet 61A porte l'un des objets 5 en regard du poste de traitement 15. Le porte-objet 61B porte un autre des objets 5 en regard du poste d'impression 19. Le porte-objet 61C porte un autre des objets 5 en regard du poste de traitement 17, c'est-à-dire dans le réacteur 33. Enfin, le porte-objet 61D n'est situé en regard d'aucun poste de traitement et permet le chargement ou le déchargement des objets 5. Ainsi, la tourelle 13 est adaptée pour porter chacun des objets 5 successivement depuis un point de chargement vers un point de déchargement après avoir réalisé un tour complet, en passant sous le poste de traitement 15, puis sous le poste d'impression 19, et enfin dans le poste de traitement 17.In the position shown on the Figures 1 to 3 , the slide 61A carries one of the objects 5 opposite the treatment station 15. The slide 61B carries another of the objects 5 opposite the printing station 19. The slide 61C carries another of objects 5 opposite the treatment station 17, that is to say in the reactor 33. Finally, the object holder 61D is located opposite any treatment station and allows the loading or unloading of objects 5. Thus, the turret 13 is adapted to carry each of the objects 5 successively from a loading point to an unloading point after having made a complete revolution, passing under the processing station 15, and then under the printing station 19 , and finally in the treatment station 17.

Les axes de porte-objet D1, D2, D3, D4 sont par exemple définis respectivement par un mandrin des porte-objets 61A, 61B, 61C, 61D.The object holder axes D1, D2, D3, D4 are for example defined respectively by a mandrel of the slides 61A, 61B, 61C, 61D.

Selon une variante non représentée, les axes de porte-objet D1, D2, D3, D4 sont définis par un culot et une pointe des porte-objets.According to a variant not shown, the object holder axes D1, D2, D3, D4 are defined by a base and a tip of the object carriers.

Les axes de porte-objet D1 à D4 sont perpendiculaires à l'axe de rotation Δ2.The object holder pins D1 to D4 are perpendicular to the axis of rotation Δ2.

Les axes des porte-objets situés en regard des postes de traitement 15, 17, c'est-à-dire ici les porte-objets 61A et 61C sur les figures, sont confondus avec l'axe de pivotement Δ1.The axes of the object-holders located opposite the processing stations 15, 17, that is to say here the object-holders 61A and 61C in the figures, coincide with the pivot axis Δ1.

Selon une variante non représentée, la tourelle 13 comporte un nombre de porte-objets (non représentés) de huit, douze...etc., c'est-à-dire un multiple de quatre strictement supérieur à quatre, que l'on peut écrire sous la forme 4(n +2), n étant un entier naturel. Les porte-objets restent régulièrement espacés angulairement autour de l'axe de rotation Δ2.According to a variant not shown, the turret 13 comprises a number of object holders (not shown) of eight, twelve, etc., that is to say a multiple of four strictly greater than four, which is can write as 4 ( n + 2), where n is a natural integer. The object holders are regularly spaced angularly around the axis of rotation Δ2.

L'axe de pivotement Δ1 reste perpendiculaire à l'axe du porte-objet portant l'objet 5 situé en regard du poste d'impression 19, et est confondu avec les deux axes des deux porte-objets diamétralement opposés par rapport à l'axe de rotation Δ2 et situés en regard des postes de traitement 15, 17. Ceci permet de mettre en oeuvre des postes de traitement additionnels (non représentés), situés angulairement entre deux porte-objets quelconques consécutifs pris parmi les porte-objets 61A à 61D représentés sur les figures.The pivot axis Δ1 remains perpendicular to the axis of the object carrying object 5 located next to the printing station 19, and coincides with the two axes of the two object holders diametrically opposite with respect to the rotation axis Δ2 and located next to the processing stations 15, 17. This allows to implement additional processing stations (not shown), located angularly between any two consecutive object-holders taken among the 61A 61D shown in the figures.

Le fonctionnement de l'ensemble 1 se déduit de sa structure et va être brièvement décrit ci-après.The operation of the assembly 1 is deduced from its structure and will be briefly described below.

En fonction des dimensions des objets 5 à imprimer, les positions relatives des postes de traitement 15, 17 et du poste d'impression 19 par rapport au châssis 9 sont d'abord réglées.Depending on the size of the objects to be printed, the relative positions of the processing stations 15, 17 and the printing station 19 relative to the frame 9 are first adjusted.

De même, l'inclinaison β du support de tourelle 11 est avantageusement réglée pour qu'une génératrice supérieure G de l'objet 5 porté par le porte-objet situé en regard du poste d'impression 19 (ici le porte-objet 61B) soit parallèle à la direction d'alignement A. En pratique, l'inclinaison β est sensiblement égale à l'angle α définissant la conicité des objets 5.Similarly, the inclination β of the turret support 11 is advantageously adjusted so that an upper generatrix G of the object 5 carried by the object-holder located opposite the printing station 19 (here the object-holder 61B) is parallel to the alignment direction A. In practice, the inclination β is substantially equal to the angle α defining the conicity of the objects 5.

Dans la variante selon laquelle les objets 5 sont cylindriques, la tourelle 13 n'est avantageusement pas inclinée, c'est-à-dire que l'axe de rotation Δ2 est sensiblement vertical et que l'angle β est sensiblement nul.In the variant in which the objects 5 are cylindrical, the turret 13 is advantageously not inclined, that is to say that the axis of rotation Δ2 is substantially vertical and the angle β is substantially zero.

Dans la variante où les objets 5 présentent une face plane à imprimer, l'inclinaison β est avantageusement réglée pour que la face plane soit sensiblement parallèle à la direction d'alignement, et de préférence sensiblement horizontale. Dans ce cas, chaque objet 5 est avantageusement maintenu immobile par le porte-objet concerné en regard du poste d'impression 19, et peut recevoir plusieurs encres, par exemple quatre, en un seul passage au poste d'impression.In the variant where the objects 5 have a flat surface to be printed, the inclination β is advantageously adjusted so that the flat face is substantially parallel to the alignment direction, and preferably substantially horizontal. In this case, each object 5 is advantageously held stationary by the object holder concerned next to the printing station 19, and can receive several inks, for example four, in a single pass to the printing station.

Puis, de manière classique, les objets 5 sont successivement chargés sur le porte-objet libre (le porte-objet 61D sur les figures), tandis que l'objet 5 porté par le porte-objet 61A subit un prétraitement au plasma, que l'objet 5 porté par le porte-objet 61B subit des impressions successives par les têtes d'impression 41 du poste d'impression 19, et que l'objet 5 porté par le porte-objet 61C subit un séchage dans le poste de traitement 17 à ultraviolets.Then, conventionally, the objects 5 are successively loaded on the free slide (the object holder 61D in the figures), while the object 5 carried by the slide 61A is pre-treated with plasma, which the object 5 carried by the slide 61B is printed successively by the printing heads 41 of the printing station 19, and the object carried by the slide 61C undergoes drying in the treatment station 17 ultraviolet light.

Lorsqu'un objet 5 revient là où est représenté le porte-objet 61D sur les figures, après avoir subi un cycle complet d'impression, l'objet est retiré de son porte-objet, soit manuellement, soit automatiquement.When an object 5 returns to where the slide 61D is shown in the figures after having undergone a complete printing cycle, the object is removed from its slide, either manually or automatically.

Ainsi, chacun des objets 5 est successivement chargé sur l'un des porte-objets 61A à 61D, puis amené en regard du poste de traitement 15 par une rotation de 90° de la tourelle 13 autour de l'axe de rotation Δ2 par rapport au châssis 9, ensuite amené sous les têtes d'impression 41 du poste d'impression 19 par une nouvelle rotation de 90° de la tourelle, ensuite encore amené dans le réacteur 33 pour un séchage par une nouvelle rotation de 90° de la tourelle, et enfin ramené à sa position d'origine par une dernière rotation de 90° de la tourelle, position dans laquelle il peut être enlevé de son porte-objet.Thus, each of the objects 5 is successively loaded on one of the slides 61A to 61D, then brought opposite the processing station 15 by a 90 ° rotation of the turret 13 about the axis of rotation Δ2 relative to to the frame 9, then brought under the printing heads 41 of the printing station 19 by a further rotation of 90 ° of the turret, then further brought into the reactor 33 for drying by a new rotation of 90 ° of the turret , and finally brought back to its original position by a last rotation of 90 ° of the turret, position in which it can be removed from its object-holder.

Grâce aux caractéristiques décrites ci-dessus, il est possible de régler l'inclinaison de l'objet 5 se situant en regard du poste d'impression 19 en réglant préalablement l'inclinaison β du support de tourelle 11 autour de l'axe de pivotement Δ1. Comme l'axe de pivotement Δ1 est confondu avec les axes des porte-objets situés en regard des deux postes de traitement 15, 17, il n'est pas nécessaire de modifier le réglage de la position des postes de traitement après une modification de l'inclinaison β. En effet, une modification de l'inclinaison β ne change pas la localisation de l'objet 5 situé en regard de ces postes de traitement. La modification de l'inclinaison β de la tourelle 13 ne provoque qu'une rotation de ces objets 5 sur eux-mêmes et n'affecte pas l'écart entre ces objets 5 et les postes de traitement 15, 17.With the characteristics described above, it is possible to adjust the inclination of the object 5 located next to the printing station 19 by previously adjusting the inclination β of the turret support 11 around the pivot axis Δ1. As the pivot axis Δ1 coincides with the axes of the object-holders located opposite the two treatment stations 15, 17, it is not necessary to modify the adjustment of the position of the treatment stations after a modification of the inclination β. Indeed, a modification of the inclination β does not change the location of the object 5 located next to these processing stations. The modification of the inclination β of the turret 13 causes only a rotation of these objects 5 on themselves and does not affect the distance between these objects 5 and the treatment stations 15, 17.

En conséquence, les réglages de la machine d'impression 6 son simplifiés.As a result, the settings of the printing machine 6 are simplified.

Claims (10)

Machine d'impression (6) pour imprimer une pluralité d'objets (5) présentant une surface externe (7) à imprimer, la machine d'impression (6) comprenant : - un châssis (9), et au moins deux postes de traitement (15, 17) et au moins un poste d'impression (19) fixés sur le châssis (9), le poste d'impression (19) comportant au moins une tête d'impression (41) à jet d'encre adaptée pour éjecter des jets d'encre (43) selon une direction d'impression (DD), et pour que les jets d'encre (43) soient alignés selon une direction d'alignement (A) perpendiculaire à la direction d'impression (DD), et - une tourelle (13) montée rotative par rapport au châssis (9) autour d'un axe de rotation (Δ2), et comportant au moins quatre porte-objets (61A, 61B, 61C, 61D) espacés régulièrement à 90° autour de l'axe de rotation (Δ2), et adaptés pour porter les objets (5) et faire tourner les objets (5) autour de quatre axes de porte-objet (D1-D4), la tourelle (13) étant mobile successivement entre au moins quatre positions par rapport au châssis (9), au moins un des porte-objets (61A, 61B, 61C, 61D) étant en regard du poste d'impression (19) dans chacune des positions, tandis que deux autres des porte-objets (61A, 61B, 61C, 61D) sont en regard des postes de traitement (15, 17), caractérisée en ce que : - les axes de porte-objet (D1-D4) sont perpendiculaires à l'axe de rotation (Δ2), - la machine d'impression (6) comprend un support de tourelle (11) sur lequel la tourelle (13) est montée rotative autour de l'axe de rotation (Δ2), et - le support de tourelle (11) est réglable en inclinaison (β) autour d'un axe de pivotement (Δ1) par rapport au châssis (9), l'axe de pivotement (Δ1) étant, d'une part, perpendiculaire à l'axe de porte-objet (D2) du porte-objet (61B) situé en regard du poste d'impression (19), et, d'autre part, confondu avec les axes de porte-objet (D1, D3) des deux autres des porte-objets (61A, 61B, 61C, 61D) situés en regard des postes de traitement (15, 17). A printing machine (6) for printing a plurality of objects (5) having an external surface (7) to be printed, the printing machine (6) comprising: - a frame (9), and at least two processing stations (15, 17) and at least one printing station (19) fixed on the frame (9), the printing station (19) comprising at least one an ink jet printhead (41) adapted to eject ink jets (43) in a printing direction (DD), and for the ink jets (43) to be aligned in a direction d alignment (A) perpendicular to the printing direction (DD), and - A turret (13) rotatably mounted relative to the frame (9) about an axis of rotation (Δ2), and comprising at least four slides (61A, 61B, 61C, 61D) regularly spaced at 90 ° around the axis of rotation (Δ2), and adapted to carry the objects (5) and rotate the objects (5) around four holder axes (D1-D4), the turret (13) being movable successively between minus four positions relative to the frame (9), at least one of the slides (61A, 61B, 61C, 61D) facing the printing station (19) in each of the positions, while two others of the objects (61A, 61B, 61C, 61D) are facing processing stations (15, 17), characterized in that the holder axes (D1-D4) are perpendicular to the axis of rotation (Δ2), the printing machine (6) comprises a turret support (11) on which the turret (13) is rotatably mounted about the axis of rotation (Δ2), and - The turret support (11) is adjustable in inclination (β) about a pivot axis (Δ1) relative to the frame (9), the pivot axis (Δ1) being, on the one hand, perpendicular to the holder axis (D2) of the object holder (61B) located opposite the printing station (19), and secondly, coinciding with the holder axes (D1, D3) of the two others of the slides (61A, 61B, 61C, 61D) located opposite the treatment stations (15, 17). Machine d'impression (6) selon la revendication 1, dans laquelle la tourelle (13) comprend 4(n+2) porte-objets, n étant un nombre entier naturel.The printing machine (6) according to claim 1, wherein the turret (13) comprises 4 (n + 2) object carriers, n being a natural integer. Machine d'impression (6) selon la revendication 1 ou 2, dans laquelle la direction d'impression (DD) est sensiblement verticale.The printing machine (6) according to claim 1 or 2, wherein the printing direction (DD) is substantially vertical. Machine d'impression (6) selon l'une quelconque des revendications 1 à 3, dans laquelle les postes de traitement (15, 17) comprennent un poste de prétraitement (15), par exemple par plasma, et un poste de séchage (17), comportant par exemple un réacteur (33) à rayons UV.Printing machine (6) according to any one of claims 1 to 3, wherein the processing stations (15, 17) comprise a pre-treatment station (15), for example by plasma, and a drying station (17), for example comprising a reactor (33) UV. Machine d'impression (6) selon l'une quelconque des revendications 1 à 4, dans laquelle le châssis (9) comporte au moins deux montants (23, 25), le support de tourelle (11) étant relié respectivement à chacun des montants (23, 25) par une liaison pivot (51-55, 53-57) selon l'axe de pivotement (Δ1).Printing machine (6) according to any one of claims 1 to 4, wherein the frame (9) comprises at least two uprights (23, 25), the turret support (11) being respectively connected to each of the uprights (23, 25) by a pivot connection (51-55, 53-57) along the pivot axis (Δ1). Machine d'impression (6) selon la revendication 5, dans laquelle le support de tourelle (11) présente une forme en berceau ayant une partie centrale (45) sur laquelle est montée la tourelle (13), et deux parties extrémales (47, 49) selon l'axe de pivotement (Δ1) respectivement reliées mécaniquement aux deux montants (23, 25).A printing machine (6) according to claim 5, wherein the turret support (11) has a cradle shape having a central portion (45) on which the turret (13) is mounted, and two end portions (47, 49) along the pivot axis (Δ1) respectively mechanically connected to the two uprights (23, 25). Machine d'impression (6) selon la revendication 5 ou 6, dans laquelle le châssis (9) comporte en outre une poutre (27) reliant mécaniquement les deux montants (23, 25) pour former un portique (29), les postes de traitement (15, 17) et le poste d'impression (19) étant fixés sur la poutre (27).Printing machine (6) according to claim 5 or 6, wherein the frame (9) further comprises a beam (27) mechanically connecting the two uprights (23, 25) to form a gantry (29), processing (15, 17) and the printing station (19) being fixed to the beam (27). Machine d'impression (6) selon l'une quelconque des revendications 1 à 7, dans laquelle le poste d'impression (19) comprend une poutre de support (35) montée réglable en hauteur par rapport au châssis (9), un chariot (37) monté coulissant sur la poutre de support (35) selon l'axe de pivotement (Δ1), une chaise (40) solidaire du chariot (37), une platine (39) montée sur la chaise (40), et une pluralité de têtes d'impression (41) montées sur la platine (39).Printing machine (6) according to any one of claims 1 to 7, wherein the printing station (19) comprises a support beam (35) mounted adjustable in height relative to the frame (9), a carriage (37) slidably mounted on the support beam (35) according to the pivot axis (Δ1), a chair (40) integral with the carriage (37), a plate (39) mounted on the chair (40), and a plurality of print heads (41) mounted on the platen (39). Ensemble (1) d'une machine d'impression (6) selon l'une quelconque des revendications 1 à 8, et d'une pluralité d'objets (5) à imprimer, chaque objet (5) présentant une surface externe (7) sensiblement de révolution à imprimer, dans lequel le support de tourelle (11) est réglé en inclinaison (β) par rapport au châssis (9) de sorte que la surface externe (7) de l'objet (5) porté par le porte-objet (61B) situé en regard du poste d'impression (19) ait une génératrice supérieure (G) sensiblement parallèle à la direction d'alignement (A).An assembly (1) of a printing machine (6) according to any one of claims 1 to 8, and a plurality of objects (5) to be printed, each object (5) having an outer surface (7) ) substantially revolution to print, wherein the turret support (11) is adjusted in inclination (β) relative to the frame (9) so that the outer surface (7) of the object (5) carried by the door object (61B) located opposite the printing station (19) has an upper generatrix (G) substantially parallel to the alignment direction (A). Procédé d'impression pour imprimer une pluralité d'objets (5), chaque objet (5) présentant une surface externe (7) à imprimer, comprenant les étapes suivantes : - fourniture d'un châssis (9), et d'au moins deux postes de traitement (15, 17) et d'au moins un poste d'impression (19) fixés sur le châssis (9), le poste d'impression (19) comportant au moins une tête d'impression (41) à jet d'encre, - fourniture d'un support de tourelle (11), et d'une tourelle (13) montée rotative sur le support de tourelle (11) par rapport au châssis (9) autour d'un axe de rotation (Δ2), et comportant au moins quatre porte-objets (61A, 61B, 61C, 61D) espacés régulièrement à 90° autour de l'axe de rotation (Δ2), et adaptés pour porter les objets (5) et pour faire tourner les objets (5) autour de quatre axes de porte-objet (D1-D4), les axes de porte-objet (D1-D4) étant perpendiculaires à l'axe de rotation (Δ2), - déplacement de la tourelle (13) successivement entre au moins quatre positions par rapport au châssis (9), au moins un des porte-objets (61B) étant en regard du poste d'impression (19) dans chacune des positions, tandis que deux autres des porte-objets (61A, 61B, 61C, 61D) sont en regard des postes de traitement (15, 17), - éjection de jets d'encre (43) par la tête d'impression (41) selon une direction d'impression (DD), les jets d'encre (43) étant alignés selon une direction d'alignement (A) perpendiculaire à la direction d'impression (DD), et - réglage du support de tourelle (11) en inclinaison (β) autour d'un axe de pivotement (Δ1) par rapport au châssis (9), l'axe de pivotement (Δ1) étant, d'une part, perpendiculaire à l'axe de porte-objet (D2) du porte-objet (61B) situé en regard du poste d'impression (19), et, d'autre part, confondu avec les axes de porte-objet (D1, D3) des deux autres des porte-objets (61A, 61B, 61C, 61D) situés en regard des postes de traitement (15, 17). A printing method for printing a plurality of objects (5), each object (5) having an external surface (7) to be printed, comprising the steps of: - supplying a frame (9), and at least two processing stations (15, 17) and at least one printing station (19) fixed on the frame (9), the printing station (19) having at least one inkjet printhead (41), - Providing a turret support (11), and a turret (13) rotatably mounted on the turret support (11) relative to the frame (9) about an axis of rotation (Δ2), and comprising at least four slides (61A, 61B, 61C, 61D) regularly spaced 90 ° about the axis of rotation (Δ2), and adapted to carry the objects (5) and to rotate the objects (5) around of four slide axes (D1-D4), the slide pins (D1-D4) being perpendicular to the axis of rotation (Δ2), - moving the turret (13) successively between at least four positions relative to the frame (9), at least one of the object carriers (61B) being opposite the printing station (19) in each of the positions, while another two of the slides (61A, 61B, 61C, 61D) are opposite treatment stations (15, 17), - ejection of ink jets (43) by the print head (41) in a printing direction (DD), the ink jets (43) being aligned in an alignment direction (A) perpendicular to the printing direction (DD), and - Adjusting the turret support (11) tilt (β) about a pivot axis (Δ1) relative to the frame (9), the pivot axis (Δ1) being, on the one hand, perpendicular to the object holder axis (D2) of the object carrier (61B) located opposite the printing station (19), and secondly, coinciding with the holder axes (D1, D3) of the two other object carriers (61A, 61B, 61C, 61D) located opposite the treatment stations (15, 17).
EP18199448.4A 2017-10-09 2018-10-09 Machine for printing a plurality of objects Active EP3466701B1 (en)

Applications Claiming Priority (1)

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FR1759431A FR3072324B1 (en) 2017-10-09 2017-10-09 MACHINE FOR PRINTING A PLURALITY OF OBJECTS

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EP3466701B1 EP3466701B1 (en) 2020-07-08

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EP (1) EP3466701B1 (en)
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FR3078503B1 (en) * 2018-03-05 2020-03-20 Machines Dubuit PRINTING MACHINE FOR PRINTING OBJECTS AND METHOD THEREOF

Citations (1)

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EP2179853A1 (en) * 2008-10-21 2010-04-28 Tapematic S.P.A. Apparatus and process for printing of cylindrical or conical surfaces

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FI119761B (en) * 2007-03-27 2009-03-13 Stora Enso Oyj Process for making printed cardboard vessels
DE102013214934A1 (en) * 2013-07-30 2015-02-05 Krones Ag Apparatus and method for direct printing of containers
DE102016209649A1 (en) * 2015-07-08 2017-01-12 Heidelberger Druckmaschinen Aktiengesellschaft Device for printing multi-dimensional objects
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FR3072324B1 (en) 2020-02-14
EP3466701B1 (en) 2020-07-08
US20190105925A1 (en) 2019-04-11
US10981397B2 (en) 2021-04-20
FR3072324A1 (en) 2019-04-19
CN109624514B (en) 2022-04-12
CN109624514A (en) 2019-04-16

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