EP3446843B1 - Profilé en bois de forme libre et sa fabrication - Google Patents

Profilé en bois de forme libre et sa fabrication Download PDF

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Publication number
EP3446843B1
EP3446843B1 EP18190324.6A EP18190324A EP3446843B1 EP 3446843 B1 EP3446843 B1 EP 3446843B1 EP 18190324 A EP18190324 A EP 18190324A EP 3446843 B1 EP3446843 B1 EP 3446843B1
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EP
European Patent Office
Prior art keywords
veneer
profile
wooden
wood
slices
Prior art date
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EP18190324.6A
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German (de)
English (en)
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EP3446843A1 (fr
Inventor
Yves Mattern
Philipp Strobel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wooden-3d-Tubing Ug (haftungsbeschraenkt)
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Wooden 3d Tubing Ug Haftungsbeschraenkt
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Publication of EP3446843A1 publication Critical patent/EP3446843A1/fr
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    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor

Definitions

  • the invention relates to a method according to the preamble of patent claim 1 for producing a free-form wooden profile and a free-form wooden tube according to the preamble of patent claim 8 and a mobility product with at least one such free-form wooden tube.
  • Freely formed timber construction components are generally known. Traditionally, such products - such as hiking sticks - were made from a branch or another piece of wood that already had roughly the desired shape (in the example for a hand rest on the one hand and as a stick on the other) and could be machined into the desired outer contour. However, with this manufacturing approach, the choice of freeform is limited to what is found in nature.
  • free-form wooden profiles e.g. chair legs, backrests or frames
  • the solid e.g. from a corresponding board or a veneer molding
  • Wooden components based on board and/or veneer that are manufactured "from the solid" have the disadvantage that the cutting can never fully take the course of the wood fibers into account, which means that the components manufactured in this way have larger dimensions than would be the case optimally due to the material characteristics - especially with regard to strength.
  • the WO 89/01856 A1 which discloses a method according to the preamble of claim 1 shows a furniture frame part with a first flat wood laminate.
  • the wood veneer is bent to form a molding with a single curvature.
  • the molding is sliced, in a direction perpendicular to the axis of curvature, and from this slice a second laminate is made.
  • This second laminate is bent in a direction such that a further curve is formed with an axis perpendicular to the first curve axis, whereby a double curve furniture frame part can be produced.
  • the method can be carried out using a device for producing a free-form wooden profile, which is set up in particular to carry out a method according to one embodiment of the invention, and has: a pressing tool, in particular a vacuum press, with a first bending mold whose mold surface has at least one axis of curvature , in particular for producing a veneer compact, and a separating tool, in particular a saw or a wedge, for separating the veneer slices from the veneer compact.
  • the pressing tool has a second bending mold, the mold surface of which has one or two axes of curvature, in particular for producing a disc compact from veneer discs layered on top of one another.
  • the device preferably has a control unit which is set up to carry out the operation of the device in accordance with the desired production specifications.
  • a free-form wooden tube is provided with a profile longitudinal axis that is curved three-dimensionally, in particular corresponding to the free-form.
  • a profile longitudinal axis is curved and extends in two or all three spatial dimensions and/or is curved around one, two or three axes of curvature at least along part of its extension.
  • the free-form wooden tube (hereinafter also referred to simply as a wooden profile) has: a profile body with a plurality of veneer elements connected to one another, in particular glued, each with a longitudinal element axis, with a veneer element being in particular that part of a veneer sheet which originates from a specific wood veneer, so that For example, there is a veneer element for each wood veneer in each veneer slice, and wherein at least some, in particular all, element longitudinal axes run at least essentially parallel to the profile longitudinal axis.
  • several veneer elements are arranged next to one another both along a profile transverse axis and along a profile vertical axis.
  • a mobility product comprising one or more free-form wooden tubes according to the invention, in particular manufactured by a method according to the invention.
  • a mobility product can be, for example, a wheelchair with a frame made of one or more wooden tubes according to an embodiment of the invention.
  • the invention is based, among other things, on the finding that wooden tubes, which actually—because of their lower specific weight—would be suitable as a surrogate for light metal tubes in a wide variety of lightweight construction applications, are hardly available on the market as free-form components.
  • the invention is now based, inter alia, on the idea of providing a manufacturing method with which wooden tubes can be manufactured in which the fiber course and the tube course fundamentally at least essentially match.
  • the profile body of a wood profile can then be formed from a plurality of adjacent veneer elements, which have an element longitudinal axis essentially corresponding to one another, with a profile longitudinal axis which essentially corresponds to the element longitudinal axes, in particular with regard to the existing curvature.
  • a veneer element is, in particular, that part of a veneer disc (after it has been separated from the veneer compact) which comes from a specific wood veneer.
  • layered veneer slices and thus also the veneer elements connected to each other in this veneer slice are preferably pressed around a second bending mold, so that - especially in combination with the pressing around the first bending mold before the separation - a three-dimensional, largely freely shaped course of the longitudinal axis of the element is made possible along the grain direction of the individual veneer elements and thus also along the profile longitudinal axis of the shaped wooden profile.
  • a wood profile shaped in this way can be recognized in particular by the fact that the connecting surfaces between the individual veneer elements are visible as lines with the same external cross section, the course of which corresponds at least essentially to the corresponding element longitudinal axis and thus also to the profile longitudinal axis of the wood profile.
  • the wooden profile then has a drawing, as it were, which preferably corresponds to the freely formed longitudinal axis.
  • a separating layer in particular a Layered separating film, on which the two half-tube semi-finished products can be easily separated for further processing after the second pressing process.
  • the production of the half-tubes themselves can then additionally have the following steps: g) removing the upper part, in particular the upper half, of the disc molding arranged above the separating layer, h) introducing, in particular milling, an inner tube contour into the upper part of the disc molding , in particular on an auxiliary mould, starting from a joining surface of the upper part previously lying on the separating layer, i) introducing, in particular milling, an inner tube contour into a lower part of the disk compact, in particular on the second bending mold, starting from a joining surface previously lying on the separating layer of the lower part.
  • the following steps can be carried out according to one embodiment: j) coating the joining surfaces, in particular the portion remaining after insertion, of the two parts with adhesive, j1) placing the two parts on one another at the joining surfaces , k) pressing the two parts on the joining surfaces, in particular by means of a press, for example a vacuum press and/or between the auxiliary mold and the second bending mold, to form a hollow profile, k1) curing the adhesive on the hollow profile.
  • a press for example a vacuum press and/or between the auxiliary mold and the second bending mold
  • a damping web in particular impregnated with adhesive, and in particular comprising a foam material, is inserted between the joining surfaces of the two parts.
  • the wood veneers are cut with an oversize in relation to the desired wood profile length before being stacked.
  • an excess can be provided in relation to the desired wood profile thickness, in particular in the transverse direction of the profile; when layering the veneer slices, an excess in relation to the desired wood profile thickness, in particular in Profile vertical direction, are provided.
  • the veneer compact can also be cut to the desired profile length with an allowance and/or the disc compact or its upper part and its lower part can be cut to the desired profile length.
  • an outer contour of the wooden profile in particular a profile lateral surface, is introduced, in particular milled, into the disc molding or into its upper part and into its lower part.
  • the wooden profile can be given the desired outer contour, which can have, for example, a constant outer cross section or an outer cross section that can change over the longitudinal extent of the wooden profile.
  • the outer cross section can also be constant or variable in the circumferential direction.
  • the outer contour can be introduced, in particular milled, into the upper part and into the lower part in separate steps.
  • an inner profile surface and/or an outer profile surface and/or a surface seal in particular a resin, for example as a thin layer of resin, is applied to the profile head surfaces.
  • the structural strength of the manufactured hollow profile can be increased by introducing a support structure to increase the stability of the wooden profile into a cavity of the hollow profile—in particular a recess formed by the inner contour of at least the upper or lower part of the disc molding.
  • the cavity can be filled with structural foam, for example, and/or be lined with a fabric hose.
  • the support structure can take up the entire cavity or part of it in different versions in relation to the cross section and/or in relation to the longitudinal extent of the wooden profile, for example adjacent to the inner wall of the wooden profile designed as a tube.
  • the profile lateral surface(s) can be ground down after the outer contour has been introduced.
  • at least one of the profile head surfaces is adapted to a connection contour of a (component) part to be connected, in particular by means of a milling and/or grinding process, and thus forms a connection interface.
  • the veneers and/or the veneer discs are heated and/or moistened and/or treated in some other way, in particular physically and/or chemically, before the respective pressing.
  • the wooden veneers are, for example, of the type in which the veneer layer is removed from the trunk in the circumferential direction, or in which the veneer layer is tangential to a longitudinal axis of the tribe is removed.
  • the wood profile is made from the wood veneer in such a way that the wood fibers run at least to a greater extent and/or essentially along the longitudinal axis of the wood profile.
  • wood veneers of at least essentially the same wall thickness are used to layer the veneer stacks, but this wall thickness can assume different values for different wood profiles within the meaning of the invention, for example 0.5 mm, 1 mm, 2 mm, 3 mm or 4 mm.
  • the veneer discs When producing the veneer discs, they can also be sawn off the veneer compact with different wall thicknesses, which preferably but do not necessarily correspond to the wall thickness of the veneers used. Preferably all slices of veneer are cut with the same wall thickness.
  • the device also has: a chipping tool, in particular a milling machine, for introducing the inner contour and/or the outer contour of the wooden profile, and /or an adhesive device with an adhesive applicator and/or an adhesive hardener, in particular having a heater and/or a UV light source.
  • a chipping tool in particular a milling machine
  • an adhesive device with an adhesive applicator and/or an adhesive hardener, in particular having a heater and/or a UV light source.
  • the separating tool and/or the chipping tool is set up to pre-process the wood veneers, the veneer molding and/or the disc molding to a desired oversize and/or oversize.
  • a method can thus be carried out according to one embodiment of the invention, in which the wood veneers used have a sufficient length and width to produce the desired wood profile as individual veneers and a sufficient thickness as layered veneers, without unnecessarily making handling during production more difficult.
  • Each veneer element has at least on one veneer side surface a connection surface with an adjacent veneer element of another wood veneer and on at least one disk side surface a connection surface with an adjacent veneer element of another veneer disk.
  • connecting surfaces are exposed on an outer surface of the manufactured wood profile (e.g. by grinding or milling the outer contour), they become visible unless an opaque lacquer or other opaque surface sealant is applied.
  • the connecting surfaces of those veneer elements that form the profile lateral surface each form a connecting line on the profile lateral surface, which - at least neglecting the effects of a cross-section of the wooden profile that changes along the profile longitudinal axis - run at least essentially parallel to the profile longitudinal axis.
  • the connecting lines are preferably distributed at least substantially uniformly along the circumference of the profile lateral surface.
  • a mobility product within the meaning of the invention can be, for example: a wheelchair, a walker, a golf caddy, a stroller or a bicycle, but also a structural component, in particular a free-form structural component, in the interior of a motor vehicle.
  • furniture products are also provided with one or more wood profiles according to an embodiment of the invention.
  • Method steps according to an exemplary embodiment of the method according to the invention are first described below (see Figures 1-5 ), which are suitable to produce a tube designed as a wooden profile 1, as in the figures 6 and 7 are shown: First, a plurality of wood veneers 2.1 to 2.8 are stacked one on top of the other, care being preferably taken to ensure that the individual wood veneers 2 are arranged with mutually corresponding, that is to say the same, fiber orientation to one another. In the exemplary embodiment, the surfaces of the wood veneers 2 that rest on one another are coated with a suitable adhesive.
  • the number of wood veneers 2 used can also be significantly higher than eight, which can depend, for example, on a desired diameter of the wood profile tube 1 and/or on the thickness of the wood veneers 2 used.
  • the wood veneers 2.1 to 2.8 are applied to a first bending mold 6 with a mold surface 8 and pressed around it.
  • Exemplary compression directions are indicated by the double-lined arrows in 1 shown.
  • the pressing takes place, for example, by means of a vacuum press, which is not shown.
  • a veneer compact 101 in which the wood veneers 2 are firmly glued together and have a negative of the shape of the mold surface 8, which is curved about a first axis of curvature 9, which is shown in the illustration in FIG 1 runs perpendicular to the plane of the drawing.
  • a plurality of veneer slices 4.1 to 4.20 are cut from the pressed veneer, which in the exemplary embodiment have at least essentially the same thickness as the wood veneers 2.
  • the veneer discs 4 are separated, for example, by means of a saw, not shown, in the exemplary embodiment at right angles to the surfaces of the wood veneers 2 that are glued together.
  • the cut sides of the veneer slices 4 cut off in this way are then coated with adhesive and stacked on top of one another for further processing placed on a second bending mold 12 with a mold surface 14 . There they are pressed around the mold surface 14 in a manner analogous to the first pressing process (cf 1 ) pressed. Exemplary compression directions are indicated by the double-lined arrows in 3 shown.
  • the second mold surface 14 has two axes of curvature 11 and 13 perpendicular to one another, so that the second mold surface can simultaneously have regions that are curved about none, one of the two, or both axes of curvature 11, 13.
  • the veneer discs are applied to the second bending mold 12 in such a way that the axes of curvature 11, 13 of the second mold surface 14 are at least substantially perpendicular to the axis of curvature 9 about which the veneer discs 4 are already curved from the first pressing process.
  • a separating layer 10 designed as a separating film can be inserted between, for example, the middle veneer disks 4.10 and 4.11 in order to ensure that during pressing around the second bending mold two half-tube semi-finished products with suitable joining surfaces can be produced. Accordingly, although the veneer discs 4.1 to 4.20 are pressed in the second pressing process, in 3 for clarification, only the veneer discs 4.1 to 4.10 are shown with the final separating film 10, from which the lower half-tube semi-finished product 301 is produced.
  • connection of the veneer discs 4 creates a disc compact - or, as in the exemplary embodiment, two disc compacts separated by the separating film 10, of which 3 only the lower disk compact 201 forming the lower half-pipe semi-finished product 301 is shown.
  • FIG 4 shows the lower disc molding 201 after the inner contour 16 of the lower half-pipe semi-finished product has been introduced by means of a non-illustrated chipping device, for example a (CNC) milling machine.
  • a non-illustrated chipping device for example a (CNC) milling machine.
  • the inner contour can be are introduced, but not on the second bending form as a workpiece carrier, but for example on a suitably shaped auxiliary form.
  • Joining surfaces 20.1 and 20.2 of the lower disc molding 201 can also be seen, which are also left in a corresponding design on the upper disc molding, not shown, so that the two half-tube semi-finished products can be connected to one another with a suitable adhesive coating on the corresponding joining surfaces (compare tube 301 in figure 5 ).
  • a support structure 24 designed as a structural foam insert is inserted into the cavity of the inner contour 16, which corresponds to the strength of the manufactured pipe 1 during operation serves.
  • the left-hand part of the upper half-pipe semi-finished product 302 is cut out in order to be able to show the damping web 22 and the support structure 24 .
  • the desired outer contour 26 of the tube is then introduced again by means of a milling machine (not shown), with which the wooden profile 1 is finished in the exemplary embodiment (cf 6 ).
  • the outer contour 26, like the inner contour 16, can be designed in such a way that the cross section of the tube 1 varies along the longitudinal axis 17 of the profile. This variation can be used, for example, when designing connection interfaces 28.1 or 28.2 for connection to other wooden profiles and/or when adjusting the wall thickness of the wooden profile 1 according to the loads to be expected during operation.
  • the wooden profile 1 designed as a tube has a profile body 27 which in turn has a plurality, preferably a large number, of veneer elements 30 connected to one another, in particular glued.
  • the profile body 27 can also have, for example - as here - a damping web 22 (see Fig figure 5 ).
  • the profile body 27 is delimited by the introduced outer contour 26 and inner contour 16 and by the connection interfaces 28.1 and 28.2.
  • the individual veneer elements 30 are at least approximately square in cross section (compare sections A - A and B - B in 6 ).
  • the square pattern drawn for explanation in these steps is to be understood in such a way that an adhesive surface runs to the adjacent wood veneer or to the adjacent veneer sheet on the lines of the square pattern running at right angles to one another.
  • This representation is intended to make it clear that (except possibly in the case of an extremely thin wall of the tube in some areas, which will not normally occur) several veneer elements 30 are always arranged next to one another along a profile transverse axis Q and along a profile vertical axis H.
  • significantly more veneer elements 30 can be arranged next to one another along the transverse profile axis Q and/or along the vertical profile axis H than is shown in the exemplary illustration in FIG 7 the case is.
  • the profile transverse axis Q and the profile vertical axis H in both sections A - A and B - B each span the section plane.
  • the veneer element 30.1 is adjacent to the veneer element 30.2 along the vertical profile axis H, among other things, and is adjacent to the veneer element 30.3 along the transverse profile axis Q.
  • the profile longitudinal axis 17 of the wooden profile 1 is drawn in schematically between the two sections A - A and B - B. It is clear from the illustration that, for example, the veneer element 30.1 extends along a longitudinal element axis 117.1 between the two longitudinal ends of the wooden profile 1 and at least from AA to BB. Due to the bending of the individual veneer elements 30 with the entire wood profile 1 during production, the element longitudinal axis 117.1 runs at least essentially parallel to the profile longitudinal axis 17 of the entire wood profile 1.
  • the veneer element 30.5 does not run along the longitudinal element axis 117.5 along the entire longitudinal extension of the wooden profile 1. This can be seen in the schematic representation from the fact that the axis 117.5 that is drawn in does run through the section A - A, but not through the B - B.
  • the veneer element 30.5 forms, with its neighboring veneer elements, a reinforcement of the wall thickness of the wooden profile 1, which is required at section A-A, but not at section B-B.
  • Fine lines are visible on the outer contour 26 along the extension with respect to the profile longitudinal axis 17 at those points at which an adhesive surface 32 runs between two wood veneers 2 or between two veneer discs 4 . At least in areas with a constant circumference of the wooden profile 1, these lines run at least essentially parallel to the profile longitudinal axis 17. For clarification in the schematic representation, one of these lines is in 7 drawn with a double-dotted line 34.
  • FIG. 8 1 shows a wheelchair as an example of a mobility product according to an embodiment of the invention, the frame of which has several interconnected free-form wooden tubes 1.1 to 1.9, one or more of which are each designed according to an embodiment of the invention.
  • the wooden profiles 1 are connected to each other at joints; the connection point 28.3 between the wooden profile 1.5 according to an exemplary embodiment of the invention and the wooden profile 1.2 according to an exemplary embodiment of the invention is shown as an example.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Claims (11)

  1. Procédé de fabrication d'un profilé en bois de forme libre (1) à partir de placages de bois (2), comprenant les étapes consistant à :
    - empiler une pluralité de placages de bois (2.1-2.8) les uns sur les autres,
    - presser les placages de bois (2.1-2.8) autour d'un premier moule de cintrage (6) dont la surface de moulage (8) présente un axe de courbure (9), pour former un corps pressé de placage (101),
    - séparer des tranches de placage (4.1-4.20) depuis le corps pressé de placage (101),
    - empiler une pluralité de tranches de placage (4) les unes sur les autres au niveau de leurs faces de coupe,
    - presser les tranches de placage (4) autour d'un deuxième moule de cintrage (12) dont la surface de moulage (14) présente un ou deux axes de courbure (11, 13),
    caractérisé en ce que
    lors de l'empilage des tranches de placage (4), une couche de séparation (10) est intercalée entre deux tranches de placage (4.10, 4.11).
  2. Procédé selon la revendication 1, caractérisé par les étapes supplémentaires consistant à :
    - enlever la partie supérieure du corps pressé de tranche, disposée au-dessus de la couche de séparation (10),
    - introduire un contour tubulaire intérieur dans la partie supérieure du corps pressé de tranche, en partant d'une surface d'assemblage de la partie supérieure, préalablement appliquée contre la couche de séparation,
    - introduire un contour tubulaire intérieur (16) dans une partie inférieure du corps pressé de tranche (201), en partant d'une surface d'assemblage (20) de la partie inférieure, préalablement appliquée contre la couche de séparation (10).
  3. Procédé selon la revendication 2, caractérisé par les étapes supplémentaires consistant à :
    - enduire de colle les surfaces d'assemblage (20) des deux parties, et/ou
    - presser les deux parties au niveau des surfaces d'assemblage (20).
  4. Procédé selon la revendication 3, caractérisé en ce qu'une barrette d'amortissement (22) est insérée entre les surfaces d'assemblage (20) des deux parties.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'un contour extérieur (26) du profilé en bois (1) est introduit dans le corps pressé de tranche (201) ou dans sa partie supérieure et dans sa partie inférieure.
  6. Procédé selon l'une des revendications précédentes 2 à 5, caractérisé en ce qu'une structure de support (24) est introduite dans une cavité du profilé creux pour augmenter la stabilité du profilé en bois (1).
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'une au moins des surfaces de tête de profilé (28.1, 28.2) est adaptée à un contour de liaison d'une pièce à relier.
  8. Tube en bois de forme libre (1) ayant un axe longitudinal de profilé (17) courbé en trois dimensions, présentant un corps profilé (27) avec une pluralité d'éléments de placage (30) reliés entre eux avec chacun un axe longitudinal d'élément (117), au moins une partie des axes longitudinaux d'élément (117) s'étendant au moins sensiblement parallèlement à l'axe longitudinal de profilé (17),
    caractérisé en ce que
    plusieurs éléments de placage sont disposés les uns à côté des autres aussi bien le long d'un axe transversal de profilé (Q) que le long d'un axe vertical de profilé (H), chaque élément de placage (30) présentant, au moins sur une face latérale de placage, une surface de liaison (32) avec un élément de placage voisin d'un autre placage en bois (2) et présentant, sur au moins une face latérale de tranche, une surface de liaison (32) avec un élément de placage voisin (30) d'une autre tranche de placage (4).
  9. Tube en bois (1) selon la revendication 8, caractérisé en ce que les surfaces de liaison (32) de ceux des éléments de placage (30) qui forment la surface enveloppe de profilé (26) forment chacune, sur la surface enveloppe de profilé, une ligne de liaison (34) qui - au moins en négligeant les effets d'une section transversale du profilé en bois (1) qui varie le long de l'axe longitudinal de profilé - s'étend au moins sensiblement parallèlement à l'axe longitudinal de profilé (17).
  10. Tube en bois (1) selon la revendication 9, caractérisé en ce que les lignes de liaison (34) sont réparties au moins sensiblement uniformément le long de la périphérie de la surface enveloppe de profilé (26).
  11. Produit de mobilité (400) comprenant un ou plusieurs tubes en bois de forme libre (1.1-1.9) selon l'une des revendications 8 à 10, en particulier fabriqué par un procédé selon l'une des revendications 1 à 7.
EP18190324.6A 2017-08-24 2018-08-22 Profilé en bois de forme libre et sa fabrication Active EP3446843B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017214866.7A DE102017214866B3 (de) 2017-08-24 2017-08-24 Freiform-Holzprofil und dessen Herstellung

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EP3446843A1 EP3446843A1 (fr) 2019-02-27
EP3446843B1 true EP3446843B1 (fr) 2022-10-05

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CN113199587B (zh) * 2021-04-02 2023-03-03 玛格家居股份有限公司 一种弧形木制品的加工工艺
DE202021001483U1 (de) 2021-04-22 2021-10-18 Mario Köhler Vorrichtungzur Bündelung von Materialstangen
DE202021001482U1 (de) 2021-04-22 2021-08-31 Mario Köhler Vorrichtung zum Zuführen gebündelter Dünnholzstangen zu einer Pressstation

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