WO2017162833A1 - Method for printing and shaping a wooden furniture item - Google Patents

Method for printing and shaping a wooden furniture item Download PDF

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Publication number
WO2017162833A1
WO2017162833A1 PCT/EP2017/057009 EP2017057009W WO2017162833A1 WO 2017162833 A1 WO2017162833 A1 WO 2017162833A1 EP 2017057009 W EP2017057009 W EP 2017057009W WO 2017162833 A1 WO2017162833 A1 WO 2017162833A1
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WO
WIPO (PCT)
Prior art keywords
printing
shaping
pattern
wooden furniture
furniture according
Prior art date
Application number
PCT/EP2017/057009
Other languages
French (fr)
Inventor
Jacques Guilhem
Laurent AZORIN
Original Assignee
Jmvl Developpement
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 Jmvl Developpement filed Critical Jmvl Developpement
Publication of WO2017162833A1 publication Critical patent/WO2017162833A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • B27D1/083—Presses specially designed for making the manufacture of shaped plywood articles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C5/00—Chairs of special materials
    • A47C5/14—Chairs of special materials characterised by the use of laminated wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/08—Stamping or bending
    • B44C3/082—Stamping or bending comprising a cutting out operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/043—Ornamental plaques, e.g. decorative panels, decorative veneers containing wooden elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0076—Digital printing on surfaces other than ordinary paper on wooden surfaces, leather, linoleum, skin, or flowers

Definitions

  • wood furniture sector In the field of wood furniture design, manufacturers want to develop their products by creating new shapes and decorations. Indeed, furniture made of plastic materials allow any form and any decoration. The wood furniture sector also wants to be able to offer modern and customizable furniture while retaining the qualities of wood and its environmental characteristics.
  • the wooden chair is used as an example of wooden furniture.
  • a chair includes a seat and a backrest that can be made separately or monolithically. It is this latter embodiment which is taken as an example in the invention.
  • a plywood having a curved shape at least two thin wood sheets of fine cut, of the order of 1 to 2 millimeters are stacked by crossing their longitudinal fibers at 90 ° and then glued together by pressing after having put a thermosetting glue between the two or more leaves.
  • the stack of several cross-fiber sheets is introduced into a press so as to obtain a multiplicity in form and the polymerization of the glue.
  • This compression can be performed using a shaping press, that is to say a press which has a curved convex portion and a concave portion for obtaining a curved ply, for example a chair seat.
  • the decorative step is difficult to achieve on a multiplis already formatted. The impression must then be made on one of the sheets of the plywood before all the sheets are assembled and compressed to form the plywood.
  • the printing on one of the wood sheets must be perfectly positioned so as to obtain a centering and precise positioning of the pattern on the multiply which, once shaped and cut, constitutes the decorated chair.
  • the patent application FR2922423 discloses a process for overcoming these difficulties.
  • the decorative patterns are printed on a cardboard sheet in a known manner, because of the perfect surface state of said sheet. It is therefore easy to print and paste this cardboard sheet on one of the sheets that make up the plywood.
  • Another problem related to wood and printing arises in the case of an impression on the inside and on the outside of a curved shape, and this even more markedly in the case of an image. identical on both sides.
  • the object of the invention is to provide a manufacturing method for the realization of a wooden furniture, in this case a chair receiving a printed pattern of high quality on at least one side, perfectly positioned, directly on the wood before it is shaped and cut.
  • Figures 1A-1H Synoptic of the process of manufacturing a printed wooden chair.
  • Figures 2 elevation view of printed print media
  • the wood is unrolled and one obtains rough cuts which are in the form of sheets of wood about 1 to 2mm thick.
  • an assembly of at least two sheets 10 and 12 is made by crossing the longitudinal fibers of each of the at least two sheets after interposing an adhesive 14 on at least one of the at least two sheets.
  • the adhesive 14 used is of vinyl type to allow some flexibility once polymerized.
  • This adhesive 14 may be applied in liquid or dry form, for example by gluing by means of rollers, by spraying, by deposition of a film or hot melt adhesive tape.
  • the two sheets 10 and 12 are then assembled by pressing using flat pressing means 16.
  • the glue is thermo polymerized, for example, as shown in FIG. 1B.
  • the at least two pasted sheets thus form a printing medium 18.
  • said printing medium 18 can be stored while being kept flat and applying a plating force.
  • FIG. 1C represents a step of sanding, manual or automated printing medium 18 by sanding means 19. This sanding step is necessary to remove imperfections of the wood and to obtain a surface condition suitable for printing HD.
  • said printing medium 18 after sanding, can be stored flat and applying a plating force to keep it perfectly flat while waiting to be used in the next step.
  • the printing medium 18 is then introduced into a printer 20 provided with a printing head 22, guide rails 24, and a suction table 26.
  • the printer 20 is, in the embodiment chosen, a printer with UV or latex inks, with a definition of about 1200 dpi, to give an idea.
  • the top surface of the print medium 18 must be kept perfectly flat during the printing phase.
  • the print head 22, with this need for high definition, must be located at about 1 millimeter.
  • the printing medium 18 is positioned between the suction table 26 and the guide rails 24. To allow the displacement of the print head 22, the guide rails 24 project only a little above the upper surface of the printer. printing medium 18, and allow the print head 22 to print on substantially all of the print medium 18, except for the very small edge portion of the print medium 18 covered by the printing rails 18. guidance 24.
  • the suction table 26 exerts a depression under the printing medium 18 and then plates flatly and uniformly the support. 18.
  • a pattern 28 is then printed on the printing medium 18.
  • the method provides the printing of marks 30 on the same side as the one receiving the pattern 28.
  • the said marks are at least two in number and define at least one line with respect to which the pattern 28 is positioned.
  • said markers 30, for example in the form of dots constitute an alignment that can be used to position the printing medium 18.
  • Each mark 30 is then used to perform a drilling 31 through the entire thickness of the support of printing 18.
  • the printing medium 18 having received the impression of the pattern 28 and provided with the holes 31 is represented in FIG. 2.
  • the print medium 18 is then transferred to a shaping press 32.
  • the press 32 is composed in this case of two curved upper concave 34 and lower convex 36, of conjugated profiles. These two curved shapes 34 and 36 are advantageously provided with means of polymerization of the adhesive in this case by emission of high frequency waves.
  • the press 32 is provided with 37-1 male and 37-2 female centering elements located respectively on the convex upper curved shape 34 and the concave lower curved shape 36.
  • the printing medium 18 is then positioned in the press 32 and the concave lower curved shape 34, with the pattern 28 facing downwards, as shown in FIG. 1E.
  • the width of the printing medium 18 is greater than the width of the press 32, so that the holes 31 are positioned outside the press 32 and the centering elements 37-1 and 37- 2 females are aligned vertically with the holes 31 of the print medium 18.
  • At least one other sheet 38 in this case two sheets 38, whose width is smaller than the spacing between the two holes 31 of the support 18 and greater than or equal to the width of the press 32, is superimposed on the support of 18, thus creating a stack 40.
  • the stack 40 is then positioned using the holes 31.
  • glue 42 is previously distributed between there at least one sheet 38 and the printing medium 18.
  • a force of pressing is then applied by the press 32 on the stack 40, the male centering elements 37-1 pass through the holes 31, then in the female centering element 37-2 and then allows the proper positioning of the stack 40 in the press 32 and the good maintenance of the stack 40 during its shaping by pressing.
  • the sheets deform and "slide" relative to each other due to the differential deformation between the convex and concave shapes 36.
  • the convex and concave shapes 36 also cause the polymerization of the glue 42.
  • a press crust 44 shown in FIG. 1G is then obtained.
  • This press stock 44 comprises only wood sheets, the outer convex face 44e having the printing pattern 28.
  • the following operation aims at cutting the final shape of the chair in the press stock 44.
  • This operation also requires the use of the holes 31 as markers, to allow accurate cutting by milling type cutting means for example.
  • Another variant of the present invention can be made and consists in producing a second printing medium 18.
  • Said second printing medium 18, provided with holes 31, is then positioned on the stack 40 with the pattern 28 facing the high. After pressing, a pattern 38 is then obtained on each of the faces 44e and 44i of the press stock 44.
  • the prints are positioned relative to the holes 31, taking into account the deformations related to the pressing and the shaping of the stack 40. .

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)

Abstract

The subject matter of the invention is a method for printing and shaping a multi-ply wooden furniture item, characterised in that it comprises the following sequence of steps: - producing at least one printing substrate (18) by gluing together at least two sheets of wood with a glue; - printing a pattern on one face of said at least one printing substrate (18); - in a press (32), pressing and shaping said at least one printing substrate (18) and at least one sheet (38) in order to produce a rough-pressed part; - cutting the rough-pressed part in order to produce said furniture item.

Description

PROCEDE D'IMPRESSION ET DE MISE EN FORME D'UN MOBILIER EN BOIS  METHOD FOR PRINTING AND SHAPING A WOODEN FURNITURE
Dans le domaine de la conception de mobilier en bois, les fabricants souhaitent faire évoluer leurs produits en créant de nouvelles formes et de nouvelles décorations. En effet, les mobiliers en matériaux plastiques autorisent n'importe quelle forme et n'importe quelle décoration. Le secteur du meuble en bois souhaite également pouvoir proposer des mobiliers modernes et personnalisables tout en conservant les qualités du bois et ses caractéristiques environnementales. In the field of wood furniture design, manufacturers want to develop their products by creating new shapes and decorations. Indeed, furniture made of plastic materials allow any form and any decoration. The wood furniture sector also wants to be able to offer modern and customizable furniture while retaining the qualities of wood and its environmental characteristics.
Pour la suite de la description, la chaise en bois est retenue comme exemple de mobilier en bois.  For the rest of the description, the wooden chair is used as an example of wooden furniture.
Une chaise comprend une assise et un dossier qui peuvent être réalisés séparément ou de façon monolithique. C'est ce dernier mode de réalisation qui est pris comme exemple dans l'invention.  A chair includes a seat and a backrest that can be made separately or monolithically. It is this latter embodiment which is taken as an example in the invention.
De façon à obtenir les formes recherchées, il existe une solution qui consiste à galber des pièces de bois réalisées à partir d'un multiplis.  In order to obtain the sought-after shapes, there is a solution that consists in shaping pieces of wood made from a plywood.
Pour obtenir un multiplis présentant une forme courbée, au moins deux feuilles de bois brutes de découpe fine, de l'ordre de 1 à 2 millimètres sont empilées en croisant leurs fibres longitudinales à 90° puis collées ensemble par pressage après avoir mis une colle thermodurcissable entre les au moins deux feuilles.  To obtain a plywood having a curved shape, at least two thin wood sheets of fine cut, of the order of 1 to 2 millimeters are stacked by crossing their longitudinal fibers at 90 ° and then glued together by pressing after having put a thermosetting glue between the two or more leaves.
L'empilement de plusieurs feuilles à fibres croisées est introduit dans une presse de façon à obtenir un multiplis en forme et la polymérisation de la colle. Cette compression peut être effectuée à l'aide d'une presse de mise en forme, c'est-à-dire une presse qui présente une partie convexe et une partie concave courbées permettant l'obtention d'un multiplis courbé, par exemple une assise de chaise. L'étape de décoration est difficilement réalisable sur un multiplis déjà mis en forme. L'impression doit alors être réalisée sur une des feuilles du multiplis avant que l'ensemble des feuilles soit assemblé et compressé pour composer le multiplis.  The stack of several cross-fiber sheets is introduced into a press so as to obtain a multiplicity in form and the polymerization of the glue. This compression can be performed using a shaping press, that is to say a press which has a curved convex portion and a concave portion for obtaining a curved ply, for example a chair seat. The decorative step is difficult to achieve on a multiplis already formatted. The impression must then be made on one of the sheets of the plywood before all the sheets are assembled and compressed to form the plywood.
Or l'impression d'un motif décoratif sur une feuille en bois est une opération complexe. En effet, les aspérités, les défauts de surface et de planéité nécessitent de maintenir les têtes d'impression à plusieurs millimètres de la surface du multiplis, ce qui limite alors la qualité d'impression. Afin d'obtenir une qualité d'impression optimale, il serait nécessaire de disposer la feuille à imprimer de manière parfaitement plane et ainsi pouvoir rapprocher les têtes d'impression au plus près, soit environ 0,8 à 1,2mm. But the impression of a decorative motif on a wooden sheet is a complex operation. Indeed, the asperities, the surface and flatness defects require to maintain the heads several millimeters of the surface of the plywood, which limits the print quality. In order to obtain an optimal print quality, it would be necessary to arrange the sheet to be printed in a perfectly flat manner and thus be able to bring the print heads closer, ie about 0.8 to 1.2 mm.
De plus, l'impression sur une des feuilles de bois doit être parfaitement positionnée de manière à obtenir un centrage et un positionnement précis du motif sur le multiplis qui, une fois mis en forme et découpé, constitue la chaise décorée. In addition, the printing on one of the wood sheets must be perfectly positioned so as to obtain a centering and precise positioning of the pattern on the multiply which, once shaped and cut, constitutes the decorated chair.
Il est alors nécessaire d'imprimer des repères sur la feuille recevant l'impression pour pouvoir d'une part positionner correctement l'impression et d'autre part disposer de repères pour permettre la découpe du multiplis mis en forme et pour obtenir la forme définitive de la chaise.  It is then necessary to print markers on the sheet receiving the printing to be able on the one hand to position correctly the printing and on the other hand to have markings to allow the cutting of the multiplis shaped and to obtain the definitive form of the chair.
On connaît par la demande de brevet FR2922423 un procédé pour pallier ces difficultés. Les motifs décoratifs sont imprimés sur une feuille cartonnée de façon connue, du fait du parfait état de surface de ladite feuille. Il est donc facile d'imprimer, puis de coller cette feuille cartonnée sur une des feuilles qui composent le multiplis.  The patent application FR2922423 discloses a process for overcoming these difficulties. The decorative patterns are printed on a cardboard sheet in a known manner, because of the perfect surface state of said sheet. It is therefore easy to print and paste this cardboard sheet on one of the sheets that make up the plywood.
Cette technique présente plusieurs imperfections. Elle nécessite l'utilisation d'une autre matière qu'il faut assembler avec les feuilles de bois déroulées, encollées. Le principal inconvénient du carton imprimé est son manque de souplesse lors de l'opération de mise en forme par compression. En effet le carton accepte mal les déformations dues au pliage tant pour les formes concaves que convexes et peut faire apparaître des plis lors de la mise en forme de l'élément en bois qui le reçoit.  This technique has several imperfections. It requires the use of another material that must be assembled with the sheets of wood unrolled, glued. The main disadvantage of printed cardboard is its lack of flexibility during the compression shaping operation. Indeed, the cardboard accepts the deformations due to folding both concave and convex forms and may cause wrinkles during the shaping of the wooden element that receives it.
De plus, l'évolution des matériaux est différente et peut poser des problèmes de vieillissement.  In addition, the evolution of materials is different and can cause aging problems.
Un autre problème lié au bois et à l'impression, se pose dans le cas d'une impression sur l'intérieur et sur l'extérieur d'une forme courbe, et ceci de façon encore plus marquée dans le cas d'une image identique sur les deux faces.  Another problem related to wood and printing, arises in the case of an impression on the inside and on the outside of a curved shape, and this even more markedly in the case of an image. identical on both sides.
L'objet de l'invention est de proposer un procédé de fabrication permettant la réalisation d'un mobilier en bois, en l'occurrence une chaise recevant un motif imprimé de grande qualité sur au moins une face, parfaitement positionné, directement sur le bois avant sa mise en forme et sa découpe.  The object of the invention is to provide a manufacturing method for the realization of a wooden furniture, in this case a chair receiving a printed pattern of high quality on at least one side, perfectly positioned, directly on the wood before it is shaped and cut.
La présente invention est décrite suivant un mode de réalisation principal et de ses variantes ceci en regard des dessins associés sur lesquels les différentes figures représentent : Figures 1A-1H: synoptique du procédé de fabrication d'une chaise en bois imprimée. Figures 2 : vue en élévation du support d'impression imprimé The present invention is described according to a main embodiment and its variants with reference to the associated drawings in which the different figures represent: Figures 1A-1H: Synoptic of the process of manufacturing a printed wooden chair. Figures 2: elevation view of printed print media
A partir de la matière, sous forme de troncs d'arbres notamment, le bois est déroulé et l'on obtient des bruts de coupe qui se présentent sous forme de feuilles de bois d'environ 1 à 2mm d'épaisseur. From the material, in the form of tree trunks in particular, the wood is unrolled and one obtains rough cuts which are in the form of sheets of wood about 1 to 2mm thick.
Comme représenté sur la figure 1A, un assemblage d'au moins deux feuilles 10 et 12 est effectué en croisant les fibres longitudinales de chacune des au moins deux feuilles après avoir interposé une colle 14 sur au moins une des au moins deux feuilles. La colle 14 utilisée est de type vinylique pour autoriser une certaine souplesse une fois polymérisée. Cette colle 14 peut être appliquée sous forme liquide ou sèche par exemple par encollage au moyen de rouleaux, par pulvérisation, par dépôt d'un film ou d'une bande collante hotmelt. Les deux feuilles 10 et 12 sont ensuite assemblées par pressage à l'aide de moyen de pressage à plat 16. La colle est thermo polymérisée par exemple, comme montré sur la figure 1B. Les au moins deux feuilles collées forment ainsi un support d'impression 18.  As shown in FIG. 1A, an assembly of at least two sheets 10 and 12 is made by crossing the longitudinal fibers of each of the at least two sheets after interposing an adhesive 14 on at least one of the at least two sheets. The adhesive 14 used is of vinyl type to allow some flexibility once polymerized. This adhesive 14 may be applied in liquid or dry form, for example by gluing by means of rollers, by spraying, by deposition of a film or hot melt adhesive tape. The two sheets 10 and 12 are then assembled by pressing using flat pressing means 16. The glue is thermo polymerized, for example, as shown in FIG. 1B. The at least two pasted sheets thus form a printing medium 18.
Dans le cas d'un procédé de fabrication non continu, c'est-à-dire dans le cas où il est nécessaire de conserver un certain temps le support d'impression 18 précédemment réalisé avant l'impression, ledit support d'impression 18 peut être stocké en étant conservé à plat et en appliquant un effort de plaquage. In the case of a non-continuous manufacturing method, that is to say in the case where it is necessary to retain a certain time the printing medium 18 previously produced before printing, said printing medium 18 can be stored while being kept flat and applying a plating force.
La figure 1C représente une étape de ponçage, manuel ou automatisé du support d'impression 18 par des moyens de ponçage 19. Cette étape de ponçage est nécessaire pour enlever les imperfections du bois et pour obtenir un état de surface adapté pour de l'impression haute définition.  FIG. 1C represents a step of sanding, manual or automated printing medium 18 by sanding means 19. This sanding step is necessary to remove imperfections of the wood and to obtain a surface condition suitable for printing HD.
De la même manière qu'après l'étape représentée sur la figure 1B, ledit support d'impression 18, après ponçage, peut être stocké à plat et en appliquant un effort de plaquage pour le maintenir parfaitement plan en attendant d'être utilisé dans l'étape suivante.  In the same way as after the step shown in FIG. 1B, said printing medium 18, after sanding, can be stored flat and applying a plating force to keep it perfectly flat while waiting to be used in the next step.
Comme montré sur la figure 1D, le support d'impression 18 est ensuite introduit dans une imprimante 20 munie d'une tête d'impression 22, de rails de guidage 24, et d'une table aspirante 26. L'imprimante 20 est, dans le mode de réalisation retenu, une imprimante à encres UV ou latex quadri, avec une définition d'environ 1200 dpi, pour donner un ordre d'idée. Pour permettre une qualité d'impression optimale, la surface supérieure du support d'impression 18 doit être maintenue parfaitement plane durant la phase d'impression. La tête d'impression 22, avec cette nécessité de haute définition, doit être située à environ 1 millimètre. As shown in FIG. 1D, the printing medium 18 is then introduced into a printer 20 provided with a printing head 22, guide rails 24, and a suction table 26. The printer 20 is, in the embodiment chosen, a printer with UV or latex inks, with a definition of about 1200 dpi, to give an idea. To enable optimum print quality, the top surface of the print medium 18 must be kept perfectly flat during the printing phase. The print head 22, with this need for high definition, must be located at about 1 millimeter.
Le support d'impression 18 est positionné entre la table aspirante 26 et les rails de guidage 24. Pour permettre le déplacement de la tête d'impression 22, les rails de guidage 24 ne dépassent que très peu au-dessus de la surface supérieure du support d'impression 18, et permettent à la tête d'impression 22 d'imprimer sur la quasi-totalité du support d'impression 18, exceptée la partie en bordure, très réduite, du support d'impression 18 recouverte par les rails de guidage 24. The printing medium 18 is positioned between the suction table 26 and the guide rails 24. To allow the displacement of the print head 22, the guide rails 24 project only a little above the upper surface of the printer. printing medium 18, and allow the print head 22 to print on substantially all of the print medium 18, except for the very small edge portion of the print medium 18 covered by the printing rails 18. guidance 24.
En plus du positionnement du support d'impression 18 dans les rails de guidage 24 et afin d'obtenir une meilleure planéité, la table aspirante 26 exerce une dépression sous le support d'impression 18 et plaque alors de manière plane et uniforme le support d'impression 18. Un motif 28 est alors imprimé sur le support d'impression 18. Simultanément à l'impression du motif 28, selon une caractéristique particulière de l'invention, le procédé prévoit l'impression de repères 30 sur la même face que celle recevant le motif 28. Lesdits repères sont au moins au nombre de deux et définissent au moins une ligne par rapport à laquelle le motif 28 est positionné. Selon un mode de réalisation particulier, lesdits repères 30, par exemple sous forme de points, constituent un alignement pouvant être utilisé pour positionner le support d'impression 18. Chaque repère 30 sert ensuite pour effectuer un perçage 31 traversant toute l'épaisseur du support d'impression 18.  In addition to the positioning of the printing medium 18 in the guide rails 24 and in order to obtain a better flatness, the suction table 26 exerts a depression under the printing medium 18 and then plates flatly and uniformly the support. 18. A pattern 28 is then printed on the printing medium 18. Simultaneously with the printing of the pattern 28, according to a particular feature of the invention, the method provides the printing of marks 30 on the same side as the one receiving the pattern 28. The said marks are at least two in number and define at least one line with respect to which the pattern 28 is positioned. According to a particular embodiment, said markers 30, for example in the form of dots, constitute an alignment that can be used to position the printing medium 18. Each mark 30 is then used to perform a drilling 31 through the entire thickness of the support of printing 18.
Le support d'impression 18 ayant reçu l'impression du motif 28 et muni des perçages 31 est représenté sur la figure 2.  The printing medium 18 having received the impression of the pattern 28 and provided with the holes 31 is represented in FIG. 2.
Le support d'impression 18 est ensuite transféré vers une presse 32 de mise en forme.  The print medium 18 is then transferred to a shaping press 32.
La presse 32 est composée en l'occurrence de deux formes courbes supérieure concave 34 et inférieure convexe 36, de profils conjugués. Ces deux formes courbes 34 et 36 sont avantageusement munies de moyens de polymérisation de la colle en l'occurrence par émission d'ondes à haute fréquence. De plus, la presse 32 est munie d'éléments de centrage 37-1 mâles et 37-2 femelles situés respectivement sur la forme courbe supérieure convexe 34 et la forme courbe inférieure concave 36. The press 32 is composed in this case of two curved upper concave 34 and lower convex 36, of conjugated profiles. These two curved shapes 34 and 36 are advantageously provided with means of polymerization of the adhesive in this case by emission of high frequency waves. In addition, the press 32 is provided with 37-1 male and 37-2 female centering elements located respectively on the convex upper curved shape 34 and the concave lower curved shape 36.
Le support d'impression 18 est ensuite positionné dans la presse 32 et sur la forme courbe inférieure concave 34, avec le motif 28 orienté vers le bas, comme représenté sur la figure 1E. La largeur du support d'impression 18 est plus importante que la largeur de la presse 32, de manière à ce que les perçages 31 soient positionnés à l'extérieur de la presse 32 et que les éléments de centrage 37-1 mâles et 37-2 femelles soient alignés verticalement avec les perçages 31 du support d'impression 18. The printing medium 18 is then positioned in the press 32 and the concave lower curved shape 34, with the pattern 28 facing downwards, as shown in FIG. 1E. The width of the printing medium 18 is greater than the width of the press 32, so that the holes 31 are positioned outside the press 32 and the centering elements 37-1 and 37- 2 females are aligned vertically with the holes 31 of the print medium 18.
Au moins une autre feuille 38, en l'occurrence deux feuilles 38, dont la largeur est inférieure à l'espacement entre les deux perçages 31 du support 18 et supérieure ou égale à la largeur de la presse 32, est superposée sur le support d'impression 18, créant ainsi un empilement 40. L'empilement 40 est ensuite positionné à l'aide des perçages 31. At least one other sheet 38, in this case two sheets 38, whose width is smaller than the spacing between the two holes 31 of the support 18 and greater than or equal to the width of the press 32, is superimposed on the support of 18, thus creating a stack 40. The stack 40 is then positioned using the holes 31.
De la même manière que pour l'assemblage des deux feuilles de bois 10 et 12 constituant le support d'impression 18, de la colle 42 est préalablement répartie entre là au moins une feuille 38 et le support d'impression 18. Une force de pressage est alors appliquée par la presse 32 sur l'empilement 40, les éléments de centrage mâle 37-1 passent à travers les perçages 31, puis dans l'élément de centrage femelle 37-2 et permet alors le bon positionnement de l'empilement 40 dans la presse 32 et le bon maintien de l'empilement 40 lors de sa mise en forme par pressage.  In the same way as for the assembly of the two sheets of wood 10 and 12 constituting the printing medium 18, glue 42 is previously distributed between there at least one sheet 38 and the printing medium 18. A force of pressing is then applied by the press 32 on the stack 40, the male centering elements 37-1 pass through the holes 31, then in the female centering element 37-2 and then allows the proper positioning of the stack 40 in the press 32 and the good maintenance of the stack 40 during its shaping by pressing.
Les feuilles se déforment et "glissent" les unes par rapport aux autres du fait du différentiel de déformation entre les formes convexe 34 et concave 36.  The sheets deform and "slide" relative to each other due to the differential deformation between the convex and concave shapes 36.
Les formes convexe 34 et concave 36 provoquent également la polymérisation de la colle 42. On obtient alors un brut de presse 44 représenté sur la figure 1G.  The convex and concave shapes 36 also cause the polymerization of the glue 42. A press crust 44 shown in FIG. 1G is then obtained.
Ce brut de presse 44 comporte uniquement des feuilles de bois, la face convexe extérieure 44e comportant le motif d'impression 28. This press stock 44 comprises only wood sheets, the outer convex face 44e having the printing pattern 28.
Une fois le brut de presse 44 obtenu, l'opération suivante vise à découper la forme finale de la chaise dans le brut de presse 44. Cette opération nécessite également l'utilisation des perçages 31 en tant que repères, pour permettre une découpe précise par des moyens de découpe de type fraiseuse par exemple.  Once the press stock 44 has been obtained, the following operation aims at cutting the final shape of the chair in the press stock 44. This operation also requires the use of the holes 31 as markers, to allow accurate cutting by milling type cutting means for example.
En variante, pour obtenir le motif d'impression 28 uniquement sur la face concave intérieure 44i du brut de presse 44 et donc du mobilier, il faut positionner dans la presse 32, le support d'impression 18 par-dessus les éléments 38 avec le motif d'impression 28 visible et orienté vers le haut.  Alternatively, to obtain the print pattern 28 only on the inner concave face 44i of the press stock 44 and thus the furniture, it is necessary to position in the press 32, the printing medium 18 over the elements 38 with the print pattern 28 visible and upward.
Une autre variante de la présente invention peut être réalisée et consiste à produire un deuxième support d'impression 18. Ledit deuxième support d'impression 18, muni de perçages 31, est alors positionné sur l'empilement 40 avec le motif 28 orienté vers le haut. Après pressage, on obtient alors un motif 38 sur chacune des faces 44e et 44i du brut de presse 44. Another variant of the present invention can be made and consists in producing a second printing medium 18. Said second printing medium 18, provided with holes 31, is then positioned on the stack 40 with the pattern 28 facing the high. After pressing, a pattern 38 is then obtained on each of the faces 44e and 44i of the press stock 44.
Selon la présente invention, lorsque l'on réalise deux supports d'impression 18 portant chacun un motif 28, les impressions sont positionnées par rapport aux perçages 31 en tenant compte des déformations liées au pressage et à la mise en forme de l'empilement 40.  According to the present invention, when two printing supports 18, each carrying a pattern 28, are produced, the prints are positioned relative to the holes 31, taking into account the deformations related to the pressing and the shaping of the stack 40. .

Claims

REVENDICATIONS
1. Procédé d'impression et de mise en forme d'un mobilier en bois multiplis, caractérisé en ce qu'il comprend la succession des étapes suivantes : 1. A method of printing and formatting a multiply wood furniture, characterized in that it comprises the succession of the following steps:
Réalisation d'au moins un support d'impression (18) par collage d'au moins deux feuilles de bois (10) et (12) avec une colle (14),  Realization of at least one printing medium (18) by bonding at least two sheets of wood (10) and (12) with an adhesive (14),
Impression d'un motif (28) sur une face dudit au moins un support d'impression (18), Pressage et mise en forme sous presse (32) dudit au moins un support d'impression (18) et d'au moins une feuille (38) pour la réalisation d'un brut de presse (44), Découpage du brut de presse (44) pour la réalisation dudit mobilier (45).  Printing a pattern (28) on one side of said at least one print medium (18), pressing and press-forming (32) of said at least one print medium (18) and at least one sheet (38) for producing a press stock (44), cutting the press stock (44) for producing said furniture (45).
2. Procédé d'impression et de mise en forme d'un mobilier en bois selon la revendication 1, caractérisé en ce que le support d'impression (18) est poncé sur au moins une de ses deux faces à l'aide de moyens de ponçage (19).  2. A method of printing and formatting a wooden furniture according to claim 1, characterized in that the printing medium (18) is sanded on at least one of its two faces using means sanding (19).
3. Procédé d'impression et de mise en forme d'un mobilier en bois selon la revendication 1 ou 2, caractérisé en ce que le support d'impression (18) est positionné dans des rails de guidage (24) avant de recevoir l'impression du motif (28).  Method for printing and shaping wooden furniture according to claim 1 or 2, characterized in that the printing medium (18) is positioned in guide rails (24) before receiving the impression of the pattern (28).
4. Procédé d'impression et de mise en forme d'un mobilier en bois selon la revendication 1, 2 ou 3, caractérisé en ce que le support d'impression (18) est positionné sur une table aspirante (26) avant de recevoir l'impression du motif (28).  4. A method of printing and shaping a wooden furniture according to claim 1, 2 or 3, characterized in that the printing medium (18) is positioned on a suction table (26) before receiving the impression of the pattern (28).
5. Procédé d'impression et de mise en forme d'un mobilier en bois selon l'une quelconque des revendications précédentes, caractérisé en ce que l'impression du motif (28) est réalisée par impression UV.  5. A method of printing and shaping a wooden furniture according to any one of the preceding claims, characterized in that the printing of the pattern (28) is performed by UV printing.
6. Procédé d'impression et de mise en forme d'un mobilier en bois selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'impression du motif (28) est réalisée par impression latex.  6. A method of printing and shaping a wooden furniture according to any one of claims 1 to 4, characterized in that the printing of the pattern (28) is performed by latex printing.
7. Procédé d'impression et de mise en forme d'un mobilier en bois selon l'une quelconque des revendications précédentes, caractérisé en ce que la colle (42) utilisée est une colle vinylique.  7. A method of printing and shaping a wooden furniture according to any one of the preceding claims, characterized in that the glue (42) used is a vinyl glue.
8. Procédé d'impression et de mise en forme d'un mobilier en bois selon l'une quelconque des revendications précédentes, caractérisé en ce que des repères (30) sont imprimés simultanément au motif (28). 8. A method of printing and formatting a wooden furniture according to any one of the preceding claims, characterized in that marks (30) are printed simultaneously pattern (28).
9. Procédé d'impression et de mise en forme d'un mobilier en bois selon la revendication9. A method of printing and shaping a wooden furniture according to the claim
8, caractérisé en ce que des perçages (31) sont réalisés au droit des repères (30). 8, characterized in that bores (31) are formed in line with the marks (30).
10. Procédé d'impression et de mise en forme d'un mobilier en bois selon la revendication 10. A method of printing and shaping a wooden furniture according to the claim
9, caractérisé en ce que l'on réalise une découpe du brut de presse (44) par rapport aux perçages (31) de façon à obtenir le mobilier. 9, characterized in that it carries out a cutting of the press stock (44) relative to the holes (31) so as to obtain the furniture.
11. Procédé d'impression et de mise en forme d'un mobilier en bois selon l'une des revendications 9 ou 10, caractérisé en ce que l'on réalise deux supports d'impression (18) portant chacun un motif (28) et en ce que les impressions sont positionnées par rapport auxdits repères (30) en tenant compte des déformations liées au pressage et à la mise en forme.  11. A method of printing and shaping a wooden furniture according to one of claims 9 or 10, characterized in that one carries out two printing media (18) each carrying a pattern (28) and in that the prints are positioned relative to said marks (30) taking into account deformations related to pressing and shaping.
PCT/EP2017/057009 2016-03-25 2017-03-23 Method for printing and shaping a wooden furniture item WO2017162833A1 (en)

Applications Claiming Priority (2)

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FR1652626 2016-03-25
FR1652626A FR3049208B1 (en) 2016-03-25 2016-03-25 METHOD FOR PRINTING AND SHAPING A WOODEN FURNITURE

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109940986A (en) * 2017-12-20 2019-06-28 北京赛特超润界面科技有限公司 A kind of controllable transports liquid is ink jet type printing equipment and the printing process of patterned surface

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Publication number Priority date Publication date Assignee Title
FR681705A (en) * 1928-10-04 1930-05-19 Masa Gmbh Zur Herstellung Kuns Manufacturing process of veneer wood
BE385367A (en) * 1931-01-03 1932-01-30
FR1248106A (en) * 1959-10-30 1960-12-09 Advanced press for the manufacture of cabinetry from plywood panels
FR1352619A (en) * 1963-02-11 1964-02-14 Panel and its manufacturing process
US4814795A (en) * 1987-05-01 1989-03-21 Marsh Company Ink jet head holder
US20080106568A1 (en) * 2006-11-07 2008-05-08 Ludwig Albrecht Device For Patterning Workpieces
EP1944141A2 (en) * 2007-01-12 2008-07-16 Sedus Stoll AG Method for manufacturing seat shells
FR2922423A1 (en) 2007-10-17 2009-04-24 Ali Samy Ait Furniture element e.g. curved chair, realizing method, involves assembling plies together to form assembly, applying sheet on surface of upper ply, and pressing assembly in form/key-form devices to glue plies and sheet and to form element

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR681705A (en) * 1928-10-04 1930-05-19 Masa Gmbh Zur Herstellung Kuns Manufacturing process of veneer wood
BE385367A (en) * 1931-01-03 1932-01-30
FR1248106A (en) * 1959-10-30 1960-12-09 Advanced press for the manufacture of cabinetry from plywood panels
FR1352619A (en) * 1963-02-11 1964-02-14 Panel and its manufacturing process
US4814795A (en) * 1987-05-01 1989-03-21 Marsh Company Ink jet head holder
US20080106568A1 (en) * 2006-11-07 2008-05-08 Ludwig Albrecht Device For Patterning Workpieces
EP1944141A2 (en) * 2007-01-12 2008-07-16 Sedus Stoll AG Method for manufacturing seat shells
FR2922423A1 (en) 2007-10-17 2009-04-24 Ali Samy Ait Furniture element e.g. curved chair, realizing method, involves assembling plies together to form assembly, applying sheet on surface of upper ply, and pressing assembly in form/key-form devices to glue plies and sheet and to form element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109940986A (en) * 2017-12-20 2019-06-28 北京赛特超润界面科技有限公司 A kind of controllable transports liquid is ink jet type printing equipment and the printing process of patterned surface
CN109940986B (en) * 2017-12-20 2020-06-26 北京赛特超润界面科技有限公司 Ink-jet printing device and method with controllable liquid conveying as patterned surface

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FR3049208B1 (en) 2018-04-06
FR3049208A1 (en) 2017-09-29

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