EP1504926A1 - Method and device for obtaining a modelling device - Google Patents

Method and device for obtaining a modelling device Download PDF

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Publication number
EP1504926A1
EP1504926A1 EP04017697A EP04017697A EP1504926A1 EP 1504926 A1 EP1504926 A1 EP 1504926A1 EP 04017697 A EP04017697 A EP 04017697A EP 04017697 A EP04017697 A EP 04017697A EP 1504926 A1 EP1504926 A1 EP 1504926A1
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EP
European Patent Office
Prior art keywords
strip
sculpture
modeling
passive
face
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EP04017697A
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German (de)
French (fr)
Inventor
Armand Piolat
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Duchenaud Uniflexo
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Duchenaud Uniflexo
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Publication date
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Publication of EP1504926A1 publication Critical patent/EP1504926A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories

Definitions

  • the present invention generally relates to a device modeling device comprising a strip made of at least one constituent material, for example an elastomer material of the rubber type, said band being flexible in its direction of extension, or length, and lasts in any direction perpendicular, or thickness of the strip.
  • this band for example in the form of cylindrical envelope or endless band, includes on one of its faces, or active face, a three-dimensional sculpture, or engraving, obtained directly in the constituent material of the relief strip, that is to say, extending at the same time according to the length, the thickness and the dimension transverse, or width, of this band.
  • this sculpture defines one or more hollow zones, with respect to one or more protruding areas, this sculpture remaining distant from the other face of the band, or passive face, via a one-piece heel with the aforementioned sculpture.
  • Such a device being an envelope cylindrical or tubular, with engraving equipment working with a laser beam, according to any suitable method, according to which the tubular casing continuous, made with the band of the constituent material, is mounted on a cylinder, in relation to a mobile head of emission of the laser beam, and performs one or more steps of removing the constituent material, and during each of these steps the laser beam travels parallel to the axis of rotation of the cylinder, corresponding to a displacement in rotation of the latter.
  • Such modeling devices find application for example in certain shaping or textile processing industries.
  • the present invention aims to result in a device for modeling as previously defined, allowing to pass all fluid, such as air, water or oil, evenly or evenly distributed without to weaken such a device.
  • the device has the form of an envelope cylindrical, and for this purpose the aforesaid band is obtained closed on itself, without transverse joint.
  • Such a cylindrical or tubular envelope can be etched and perforated with laser beam engraving equipment, according to any method as previously defined, according to which the continuous tubular envelope is mounted on the cylinder of the engraving equipment, in connection with the head transmission of the laser beam, and several operating steps are performed removal of the material constituting the strip, according to which the laser beam moves parallel to the axis of rotation of the cylinder, correspondence with a rotational movement of the latter.
  • a device for modeling as previously defined in the form of an envelope continuously tubular, one executes, separately and successively, at least one step of etching during which constituent material is removed for engraving the three-dimensional sculpture on the side of the active face of the strip, and at least one perforation step, during which material is removed constitutive to obtain, from the three-dimensional sculpture, the canals through, the tubular casing of the constituent material remaining mounted on the cylinder when going from an etching step to a perforation step.
  • the perforation of the carved strip is carried out at less in two stages, namely a first step after which through channels remain unsuccessful, and a second step, at the end of which through channels lead to the passive side of the bandaged.
  • a device according to the invention may be a plate, with or without a connection, comprising a band or portion of a band according to the present invention.
  • the chemical nature and / or the type of material constituting the band are chosen, first according to the hardness required according to the thickness, and the where appropriate the flexibility required depending on the length of the strip, and then according to the ability of said material to be etched or perforated with a laser beam, determined by routine tests.
  • the retained material for example of the polymer type, can be loaded with any suitable load, for example graphite, provided that this charge remains compatible with engraving and laser perforation.
  • the constituent material of the strip is a elastomer, for example polyurethane, whose hardness is at least 20 Shore A, and preferably between 30 Shore A and 90 Shore A.
  • each projecting zone so-called modeling, has an oblique flank or slope devoid of any perforation through the thickness, opening on said oblique flank.
  • the through-channels each have a section at more equal in diameter to 2mm, and preferably between 0.1 and 1 mm.
  • the strip has for example an overall thickness, at most equal to 15 mm, and preferably between 1 and 10 mm.
  • the depth of the structure three-dimensional is at most equal to 2 mm, and preferentially between 0.5 and 1.5 mm.
  • a modeling device 1 in the form of a cylindrical or tubular envelope consisting of a band obtained closed on itself, without transverse seal.
  • this band made in at least one constituent material, for example an elastomer material of the rubber type, is flexible in its extension direction, or length, and lasts in any perpendicular direction, or thickness.
  • This band includes a face active 2a and a passive face 2b.
  • a sculpture 3-dimensional, or engraving is obtained directly in the material constitutive of the band, in relief, which means that this sculpture 3 extends to both according to length, thickness, and transverse dimension, or width, of the band 2.
  • This sculpture defines one or more hollow zones 4 by relative to one or more projecting zones, which remain at a distance of the passive side 2b of the band, thanks to a heel 6 monoblock with the sculpture 3.
  • each protruding zone 5, referred to as modeling, has an oblique flank 5b without any perforation through its thickness, opening on said oblique flank.
  • a modeling device comprising a band 2 closed on itself, without transverse seal, is obtained with equipment or machine engraving with laser beam, defined and implemented as described below.
  • the etching equipment 101 implemented according to the invention comprises a cylinder 12 integral in rotation with an axis 13, and with a mobile transmitting head of a pulsed laser beam with variable power.
  • the tubular strip 2 made of material elastomer is mounted on the cylinder 12, fixed and marked.
  • the axis 13 is able to rotate at a speed substantially constant around an axis ⁇ under the effect of a first system 16, itself connected to a first encoder 14 which provides information continually a control system 17 on the rotational positioning of the cylinder 12.
  • a laser source 18 generates a power laser beam 20 variable, which is brought up to the head 15 via a set of 10.
  • This head 15 is mounted on a drive screw 11 and can be to move in translation parallel to the axis ⁇ under the effect of a second system 32, itself associated with a second encoder 25 which provides information continuously the control system 17 on the positioning of the head emission 15 along the drive screw 11.
  • the laser source 18 comprises, on the one hand, anodes and cathodes located in each of the eight tubes (not shown) generators of the laser beam 20, and on the other hand, a circulating gas mixture at high speed in these tubes and comprising approximately 5% of carbon dioxide and 95% of a mixture of helium and nitrogen in proportions equivalent.
  • the emission head 15 is provided with a lens 22 allowing focus the laser beam 20 delivered by the laser source 18.
  • an elementary pattern to be engraved or perforated on the tubular strip 2 is first scanned and then stored on a computer disk in the form of a file based on digital data, which is comparable to a signal digital. These digital data can also be entered directly without using a scanner.
  • this elementary pattern can be a drawing in three dimensions, for example length, width, and thickness that must be engraved or perforated.
  • this digital signal is, on the one hand, transmitted to the control system 17 via a 23, so as to synchronize the movements of the transmission head 15 and of the axis 13, through their drive systems 16 and 32, and of their respective encoders 14, 25, and on the other hand, converted into a signal digital, 1 bit or 8 bits depending on the complexity or difficulty of the engraving or perforation to achieve, generating a profile of three-dimensional engraving.
  • FIG. 5 is a schematic representation of an example of a signal in 1-bit mode, corresponding to an E-shaped drawing that is wants to engrave on the tubular strip 2.
  • the latter has been pixelated under the form of a matrix 36 comprising cells 37 each assimilable to a point. Boxes 37 with the number 0 are intended to remain intact, and therefore, the laser beam 20 will have to be extinguished when the transmission head 15 will go through them. On the other hand, in boxes 37 with the number 1, the beam laser 20 will have to be active and deliver adequate power.
  • this digital signal must therefore be communicated, on the one hand, to control system 17 so that the engraving is performed at the desired location of the tube 2, and secondly, pulsed laser 18, so that it can properly generate the variable power laser beam in all points.
  • the digital signal is translated, using maps electronic signals known in themselves, in an analog signal included between 0 and 10 volts, which covers the entire power range of the laser pulsed 18, this range being advantageously between 0 and 1500 Watts.
  • These different voltage levels are then converted into current levels, through current regulation boards known to the man of the job.
  • the laser pulsed 18 is thus able to generate the laser beam 20 of variable power, which allows the extremely fine reproduction of the pattern corresponding to a step of engraving or perforation.
  • This laser beam 20 is finally guided through the play of mirrors 10 to the transmission head 15, where it is focused by the lens 22 on the tubular strip 2 to be engraved or perforated. Given this focussing, the delivered laser beam has a larger section dimension, of the order of 0, 1 mm.
  • variable power laser beam then scans the cylinder 2 on its perimeter, by successively browsing lines marked A, B, C and D, in the case of an etching step.
  • the zones of the tubular strip 2 in which an etching or perforation must be carried out can therefore be defined as each being an assembly of parallel lines situated around the periphery of the cylinder 12, and to be traversed by the variable-power laser beam 20. It is thus possible to decompose each cm 2 of these zones into an assembly of about 100 parallel lines.
  • a device according to the present invention is obtained by removal of the constituent material, under the effect of the laser beam, in stages successive.
  • the tubular casing 2 of the constituent material remains mounted on the cylinder 12, so as to keep the same location and the same references for the different passages of the laser beam.
  • FIG. 6 is a partial view in cross-section, after engraving, in the 1-bit or 8-bit mode, of the tubular casing 2, in section transverse, showing in particular its sculpture 3 on the side of the active face 2a.
  • FIG. 6 After scanning the laser beam 20, it can be seen that the plates 5a are remained intact.
  • Each tray 5a belonging to a zone 5 modeling is connected to the heel 6 via an oblique sidewall or embankment 5b.
  • Between the projecting zones 5, modeling are hollowed zones hollow 4, also modeling, corresponding to boxes 37 carrying the 1 in Figure 5, and in which the laser beam 20 power variable has been active.
  • each plate 5a corresponds to a box 37 0 in accordance with Figure 5.
  • each oblique flank 5b is automatically determined by the current regulation boards, and schematically corresponds to the transition between two adjacent cells 37, according to the diagram of Figure 5, respectively bearing the numbers 1 and 0.
  • creating an oblique flank 5b, around or on both sides of each plate 5a has the advantage of conferring on each projecting zone 5, modeling, better mechanical strength over time.
  • this description is more specially based on an engraving process using a signal digital mode 1 bit.
  • the digital signal used may be preferentially carried out according to the 8-bit mode. Indeed, the latter offers 256 combinations which, after translation into an analogue signal, give birth to 256 laser power levels. It is then possible desired locations of the tubular casing 2, to vary very finely the density and / or depth of areas struck by the laser beam 20.
  • etching or perforation can be performed at different depths.
  • the Modulating pulsation of the laser beam 20 can be done at very low levels as at very high levels, depending on the level of power chosen by the operator when setting the burning parameters or perforation.
  • the pulsed laser simply marks the piece, without really giving it relief.
  • the hollow can reach 1 mm steadily, and this with a precision of the order of the tenth.
  • the laser can perforate the room very precisely.
  • patterns having perforations 71, 72, in perfect registration with zones in Hollow 4 and projecting 5 can be made.
  • the constituent material of the strip may be base of fibers or glass threads, impregnated with a thermosetting resin or thermoplastic.

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  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Laser Beam Processing (AREA)

Abstract

The device has a band provided with active and passive sides (2a, 2b), and a three-dimensional carving (3) formed on the active side. The carving defines hollow zone with respect to one of a set of projecting zones, each having a flattened top that provides an extension plate. The extension plate is parallel to a passive side (2b) of a band (2), and channels cross each projecting zone of the plate at the passive side. An independent claim is also included for a method of obtaining a modeling device.

Description

La présente invention concerne de manière générale un dispositif de modelage comprenant une bande faite en au moins un matériau constitutif, par exemple un matériau élastomère du type caoutchouc, ladite bande étant souple dans sa direction d'extension, ou longueur, et dure dans toute direction perpendiculaire, ou épaisseur de la bande. De manière générale cette bande, par exemple en forme d'enveloppe cylindrique ou de bande sans fin, comprend sur l'une de ses faces, ou face active, une sculpture tridimensionnelle, ou gravure, obtenue directement dans le matériau constitutif de la bande en relief, c'est-à-dire s'étendant à la fois selon la longueur, l'épaisseur et la dimension transversale, ou largeur, de cette bande. Selon tout motif ou dessin approprié, cette sculpture définit une ou des zones en creux, par rapport à une ou des zones en saillie, cette sculpture demeurant par ailleurs à distance de l'autre face de la bande, ou face passive, par l'intermédiaire d'un talon monobloc avec la sculpture précitée.The present invention generally relates to a device modeling device comprising a strip made of at least one constituent material, for example an elastomer material of the rubber type, said band being flexible in its direction of extension, or length, and lasts in any direction perpendicular, or thickness of the strip. In general, this band, for example in the form of cylindrical envelope or endless band, includes on one of its faces, or active face, a three-dimensional sculpture, or engraving, obtained directly in the constituent material of the relief strip, that is to say, extending at the same time according to the length, the thickness and the dimension transverse, or width, of this band. According to any appropriate pattern or design, this sculpture defines one or more hollow zones, with respect to one or more protruding areas, this sculpture remaining distant from the other face of the band, or passive face, via a one-piece heel with the aforementioned sculpture.

Il est possible d'obtenir,un tel dispositif, s'agissant d'une enveloppe cylindrique ou tubulaire, avec un équipement de gravure travaillant avec un faisceau laser, selon tout procédé approprié, selon lequel l'enveloppe tubulaire continue, réalisée avec la bande du matériau constitutif, est montée sur un cylindre, en relation avec une tête mobile d'émission du faisceau laser, et on exécute une ou plusieurs étapes d'enlèvement du matériau constitutif, et pendant chacune de ces étapes le faisceau laser se déplace parallèlement à l'axe de rotation du cylindre, en correspondance avec un déplacement en rotation de ce dernier.It is possible to obtain such a device, being an envelope cylindrical or tubular, with engraving equipment working with a laser beam, according to any suitable method, according to which the tubular casing continuous, made with the band of the constituent material, is mounted on a cylinder, in relation to a mobile head of emission of the laser beam, and performs one or more steps of removing the constituent material, and during each of these steps the laser beam travels parallel to the axis of rotation of the cylinder, corresponding to a displacement in rotation of the latter.

De tels dispositifs de modelage trouvent par exemple application dans certaines industries de façonnage ou transformation textile.Such modeling devices find application for example in certain shaping or textile processing industries.

La présente invention a pour objectif d'aboutir à un dispositif de modelage tel que précédemment défini, permettant de laisser passer tout fluide, tel que air, eau ou huile, de manière uniforme ou bien distribuée, sans pour autant fragiliser un tel dispositif.The present invention aims to result in a device for modeling as previously defined, allowing to pass all fluid, such as air, water or oil, evenly or evenly distributed without to weaken such a device.

Conformément à la présente invention, la sculpture comporte :

  • une ou plusieurs zones en saillie, dites modelantes, comportant chacune un sommet aplati présentant un plateau d'extension parallèle à la face passive de la bande, avec une pluralité de canaux traversant chaque zone modelante en saillie, dudit plateau à ladite face passive,
  • et/ou une ou plusieurs zones en creux, dites modelantes, comportant chacune un fond aplati présentant un plateau d'extension parallèle à la face passive de la bande, avec une pluralité de canaux traversant chaque zone modelante entre creux, dudit plateau à ladite face passive.
According to the present invention, the sculpture comprises:
  • one or more projecting zones, said modeling, each comprising a flattened top having an extension plate parallel to the passive face of the strip, with a plurality of channels passing through each projecting modeling zone, said plate to said passive face,
  • and / or one or more recessed areas, called modeling zones, each comprising a flattened bottom having an extension plate parallel to the passive face of the strip, with a plurality of channels passing through each hollow modeling zone, from said plate to said face. passive.

Préférentiellement, le dispositif a la forme d'une enveloppe cylindrique, et à cette fin la bande précitée est obtenue refermée sur elle-même, sans joint transversal.Preferably, the device has the form of an envelope cylindrical, and for this purpose the aforesaid band is obtained closed on itself, without transverse joint.

Une telle enveloppe cylindrique ou tubulaire peut être gravée et perforée avec un équipement de gravure à faisceau laser, selon tout procédé tel que précédemment défini, selon lequel l'enveloppe tubulaire continue est montée sur le cylindre de l'équipement de gravure, en relation avec la tête mobile d'émission du faisceau laser, et on exécute plusieurs étapes opératoires d'enlèvement du matériau constitutif de la bande, selon laquelle ou lesquelles le faisceau laser se déplace parallèlement à l'axe de rotation du cylindre, en correspondance avec un déplacement en rotation de ce dernier.Such a cylindrical or tubular envelope can be etched and perforated with laser beam engraving equipment, according to any method as previously defined, according to which the continuous tubular envelope is mounted on the cylinder of the engraving equipment, in connection with the head transmission of the laser beam, and several operating steps are performed removal of the material constituting the strip, according to which the laser beam moves parallel to the axis of rotation of the cylinder, correspondence with a rotational movement of the latter.

Préférentiellement, selon l'invention, pour obtenir un dispositif de modelage tel que précédemment défini, sous la forme d'une enveloppe tubulaire continue, on exécute, séparément et successivement, au moins une étape de gravure pendant laquelle on enlève du matériau constitutif pour graver la sculpture tridimensionnelle du coté de la face active de la bande, et au moins une étape de perforation, pendant laquelle on enlève du matériau constitutif pour obtenir, à partir de la sculpture tridimensionnelle, les canaux traversants, l'enveloppe tubulaire du matériau constitutif demeurant montée sur le cylindre lorsqu'on passe d'une étape de gravure à une étape de perforation.Preferably, according to the invention, to obtain a device for modeling as previously defined, in the form of an envelope continuously tubular, one executes, separately and successively, at least one step of etching during which constituent material is removed for engraving the three-dimensional sculpture on the side of the active face of the strip, and at least one perforation step, during which material is removed constitutive to obtain, from the three-dimensional sculpture, the canals through, the tubular casing of the constituent material remaining mounted on the cylinder when going from an etching step to a perforation step.

A titre d'exemple, la perforation de la bande sculptée s'effectue au moins en deux étapes, à savoir une première étape au terme de laquelle les canaux traversants demeurent non débouchants, et une deuxième étape, au terme de laquelle les canaux traversants débouchent sur la face passive de la bande.For example, the perforation of the carved strip is carried out at less in two stages, namely a first step after which through channels remain unsuccessful, and a second step, at the end of which through channels lead to the passive side of the bandaged.

A titre de variante, un dispositif selon l'invention peut être une plaque, avec ou sans raccord, comprenant une bande ou portion de bande selon la présente invention.As a variant, a device according to the invention may be a plate, with or without a connection, comprising a band or portion of a band according to the present invention.

La nature chimique et/ou le type de matériau constitutif de la bande sont choisis, d'abord en fonction de la dureté requise selon l'épaisseur, et le cas échéant de la souplesse requise selon la longueur de la bande, et ensuite selon l'aptitude dudit matériau à être gravé ou perforé avec un faisceau laser, déterminée par des tests de routine.The chemical nature and / or the type of material constituting the band are chosen, first according to the hardness required according to the thickness, and the where appropriate the flexibility required depending on the length of the strip, and then according to the ability of said material to be etched or perforated with a laser beam, determined by routine tests.

Le matériau retenu, par exemple du type polymère, peut être chargé avec toute charge appropriée, par exemple du graphite, dès lors que cette charge demeure compatible avec la gravure et perforation par laser.The retained material, for example of the polymer type, can be loaded with any suitable load, for example graphite, provided that this charge remains compatible with engraving and laser perforation.

Ainsi les matériaux suivants peuvent être retenus :

  • FEP (fluorure éthylène propylène), qui est un thermo-plastique fluoré, par exemple dans une gamme de dureté comprise entre 55 et 60 Shore D ;
  • PTFE (polytétrafluoroéthylène), qui est un thermo-plastique fluoré, par exemple dans une gamme de dureté comprise entre 55 et 72 Shore D ;
  • POM (polyoxyméthylène), qui est un thermo-plastique.
Thus the following materials can be selected:
  • FEP (ethylene propylene fluoride), which is a fluorinated thermoplastic, for example in a range of hardness between 55 and 60 Shore D;
  • PTFE (polytetrafluoroethylene), which is a fluorinated thermoplastic, for example in a range of hardness between 55 and 72 Shore D;
  • POM (polyoxymethylene), which is a thermoplastic.

Préférentiellement, le matériau constitutif de la bande est un élastomère, par exemple polyuréthane, dont la dureté est au moins égale à 20 Shore A, et préférentiellement comprise entre 30 Shore A et 90 Shore A.Preferably, the constituent material of the strip is a elastomer, for example polyurethane, whose hardness is at least 20 Shore A, and preferably between 30 Shore A and 90 Shore A.

Selon un mode d'exécution de l'invention, chaque zone en saillie, dite modelante, comporte un flanc oblique ou talus exempt de toute perforation traversante selon l'épaisseur, débouchant sur ledit flanc oblique.According to one embodiment of the invention, each projecting zone, so-called modeling, has an oblique flank or slope devoid of any perforation through the thickness, opening on said oblique flank.

A titre d'exemple, les canaux traversants ont chacun une section au plus égale en diamètre à 2mm, et préférentiellement comprise entre 0,1 et 1 mm.For example, the through-channels each have a section at more equal in diameter to 2mm, and preferably between 0.1 and 1 mm.

La bande a par exemple une épaisseur hors tout, au plus égale à 15 mm, et préférentiellement comprise entre 1 et 10 mm.The strip has for example an overall thickness, at most equal to 15 mm, and preferably between 1 and 10 mm.

Toujours à titre d'exemple, la profondeur de la structure tridimensionnelle est au plus égale à 2 mm, et préférentiellement comprise entre 0,5 et 1,5 mm.Still as an example, the depth of the structure three-dimensional is at most equal to 2 mm, and preferentially between 0.5 and 1.5 mm.

La présente invention est maintenant décrite par référence au dessin annexé, dans lequel :

  • la figure 1 représente une vue en perspective d'un dispositif de modelage selon l'invention, sous la forme d'une enveloppe cylindrique ou tubulaire ;
  • la figure 2 représente, de manière schématique, une coupe selon un plan diamétral de la bande représentée à la figure 1 ;
  • la figure 3 représente, toujours de manière schématique, une vue à plat et de dessus de la bande appartenant au dispositif représenté selon figure 1.
  • la figure 4 est une représentation schématique d'un équipement de gravure laser, permettant d'obtenir un dispositif de modelage selon la présente invention, ayant la forme représentée aux figures 1 et 2, c'est-à-dire d'une enveloppe cylindrique constituée par une bande refermée sur elle-même ;
  • la figure 5 est une représentation schématique d'un signal ou fichier numérique, en mode 1 bit, correspondant à chaque étape d'enlèvement du matériau constitutif de la bande, à savoir de gravure ou de perforation.
  • de manière analogue à la figure 2, la figure 6 représente la bande selon figures 1 et 2, dans un état intermédiaire de façonnage, obtenu au terme d'une ou plusieurs étapes de gravure tridimensionnelle avec un équipement à faisceau laser.
  • la figure 7 représente cette même bande dans un état ultérieur intermédiaire, obtenu au terme d'une première étape de perforation.
The present invention is now described with reference to the accompanying drawing, in which:
  • FIG. 1 represents a perspective view of a modeling device according to the invention, in the form of a cylindrical or tubular envelope;
  • Figure 2 shows schematically a section along a diametral plane of the band shown in Figure 1;
  • FIG. 3 is a diagrammatic view of a flat and top view of the strip belonging to the device shown in FIG. 1.
  • FIG. 4 is a schematic representation of a laser engraving equipment, making it possible to obtain a modeling device according to the present invention, having the shape shown in FIGS. 1 and 2, that is to say of a cylindrical envelope constituted by a band closed on itself;
  • FIG. 5 is a schematic representation of a signal or digital file, in 1-bit mode, corresponding to each step of removal of the constituent material of the strip, namely etching or perforation.
  • similarly to FIG. 2, FIG. 6 shows the strip according to FIGS. 1 and 2, in an intermediate shaping state, obtained at the end of one or more three-dimensional etching steps with a laser beam equipment.
  • FIG. 7 represents this same band in an intermediate subsequent state, obtained after a first perforation step.

Conformément à la figure 1, un dispositif de modelage 1 selon l'invention, a la forme d'une enveloppe cylindrique ou tubulaire, consistant en une bande obtenue refermée sur elle-même, sans joint transversal.According to FIG. 1, a modeling device 1 according to the invention in the form of a cylindrical or tubular envelope consisting of a band obtained closed on itself, without transverse seal.

Par référence à la figure 2, cette bande, faite en au moins un matériau constitutif, par exemple un matériau élastomère du type caoutchouc, est souple dans sa direction d'extension, ou longueur, et dure dans toute direction perpendiculaire, ou épaisseur. Cette bande comprend une face active 2a et une face passive 2b. Sur la face active 2a, une sculpture tridimensionnelle 3, ou gravure, est obtenue directement dans le matériau constitutif de la bande, en relief, ce qui veut dire que cette sculpture 3 s'étend à la fois selon la longueur, l'épaisseur, et la dimension transversale, ou largeur, de la bande 2. Cette sculpture définit une ou plusieurs zones en creux 4 par rapport à une ou plusieurs zones 5 en saillie, lesquelles demeurent à distance de la face passive 2b de la bande, grâce à un talon 6 monobloc avec la sculpture 3.With reference to FIG. 2, this band, made in at least one constituent material, for example an elastomer material of the rubber type, is flexible in its extension direction, or length, and lasts in any perpendicular direction, or thickness. This band includes a face active 2a and a passive face 2b. On the active side 2a, a sculpture 3-dimensional, or engraving, is obtained directly in the material constitutive of the band, in relief, which means that this sculpture 3 extends to both according to length, thickness, and transverse dimension, or width, of the band 2. This sculpture defines one or more hollow zones 4 by relative to one or more projecting zones, which remain at a distance of the passive side 2b of the band, thanks to a heel 6 monoblock with the sculpture 3.

Selon la présente invention :

  • parmi les zones en saillie de la sculpture 3, on peut distinguer des zones 5 dites modelantes, comportant chacune un sommet aplati présentant un plateau 5a d'extension parallèle à la face passive 2b de la bande, tandis qu'une pluralité de canaux traverse chaque zone modelante 5 en saillie, dudit plateau 5a à la face passive 2b ;
  • et/ou, parmi les zones en creux, on peut distinguer des zones 4 dites modelantes, comportant chacune un fond aplati présentant un plateau 4a d'extension parallèle à la face passive 2b de la bande, et une pluralité de canaux traverse chaque zone modelante 4 en creux, dudit plateau 4a à ladite face passive 2b de la bande 2.
According to the present invention:
  • among the protruding zones of the sculpture 3, it is possible to distinguish so-called modeling zones, each having a flattened vertex having a plate 5a extending parallel to the passive face 2b of the strip, whereas a plurality of channels passes through each modeling zone 5 protruding from said plate 5a to the passive face 2b;
  • and / or, among the hollow zones, it is possible to distinguish so-called modeling zones 4, each having a flattened bottom having a plate 4a extending parallel to the passive face 2b of the strip, and a plurality of channels passing through each modeling zone. 4 recessed from said plate 4a to said passive face 2b of the strip 2.

Comme le montre la figure 2, chaque zone en saillie 5, dite modelante, comporte un flanc oblique 5b exempt de toute perforation traversante selon son épaisseur, débouchant sur ledit flanc oblique.As shown in FIG. 2, each protruding zone 5, referred to as modeling, has an oblique flank 5b without any perforation through its thickness, opening on said oblique flank.

Un dispositif de modelage comprenant une bande 2 refermée sur elle-même, sans joint transversal, est obtenu avec un équipement ou machine de gravure avec faisceau laser, défini et mis en oeuvre comme décrit ci-après.A modeling device comprising a band 2 closed on itself, without transverse seal, is obtained with equipment or machine engraving with laser beam, defined and implemented as described below.

L'équipement de gravure 101 mis en oeuvre selon l'invention, tel que représenté schématiquement à la figure 4, comporte un cylindre 12 solidaire en rotation d'un axe 13, et d'une tête 15 mobile d'émission d'un faisceau laser pulsé à puissance variable. La bande tubulaire 2 en matériau élastomère est montée sur le cylindre 12, fixée et repérée.The etching equipment 101 implemented according to the invention, such as shown diagrammatically in FIG. 4, comprises a cylinder 12 integral in rotation with an axis 13, and with a mobile transmitting head of a pulsed laser beam with variable power. The tubular strip 2 made of material elastomer is mounted on the cylinder 12, fixed and marked.

Plus précisément, l'axe 13 est apte à tourner à vitesse sensiblement constante autour d'un axe Δ sous l'effet d'un premier système d'entraínement 16, lui-même relié à un premier encodeur 14 qui renseigne continuellement un système de contrôle 17 sur le positionnement en rotation du cylindre 12. Une source laser 18 génère un faisceau laser 20 de puissance variable, qui est amené jusqu'à la tête 15 par l'intermédiaire d'un jeu de miroirs 10. Cette tête 15 est montée sur une vis d'entraínement 11 et peut se mouvoir en translation parallèlement à l'axe Δ sous l'effet d'un second système d'entraínement 32, lui-même associé à un second encodeur 25 qui renseigne continuellement le système de contrôle 17 sur le positionnement de la tête d'émission 15 le long de la vis d'entraínement 11.More specifically, the axis 13 is able to rotate at a speed substantially constant around an axis Δ under the effect of a first system 16, itself connected to a first encoder 14 which provides information continually a control system 17 on the rotational positioning of the cylinder 12. A laser source 18 generates a power laser beam 20 variable, which is brought up to the head 15 via a set of 10. This head 15 is mounted on a drive screw 11 and can be to move in translation parallel to the axis Δ under the effect of a second system 32, itself associated with a second encoder 25 which provides information continuously the control system 17 on the positioning of the head emission 15 along the drive screw 11.

Plus précisément encore, la source laser 18 comporte, d'une part, des anodes et cathodes situées dans chacun des huit tubes (non représentés) générateurs du faisceau laser 20, et d'autre part, un mélange gazeux circulant à grande vitesse dans ces tubes et comprenant approximativement 5% de dioxyde de carbone et 95% d'un mélange d'hélium et d'azote en proportions équivalentes. La tête d'émission 15 est munie d'une lentille 22 permettant de focaliser le faisceau laser 20 délivré par la source laser 18. More precisely, the laser source 18 comprises, on the one hand, anodes and cathodes located in each of the eight tubes (not shown) generators of the laser beam 20, and on the other hand, a circulating gas mixture at high speed in these tubes and comprising approximately 5% of carbon dioxide and 95% of a mixture of helium and nitrogen in proportions equivalent. The emission head 15 is provided with a lens 22 allowing focus the laser beam 20 delivered by the laser source 18.

Préalablement à la gravure proprement dite, pour chaque étape d'enlèvement par sublimation ou incinération du matériau constitutif de la bande, à l'aide d'un logiciel de traitement d'image bien connu de l'homme du métier, un motif élémentaire à graver ou perforer sur la bande tubulaire 2 est tout d'abord scanné, puis stocké sur le disque d'un ordinateur sous la forme d'un fichier à base de données numériques, qui est assimilable à un signal numérique. Ces données numériques peuvent également être entrées directement sans utiliser de scanner.Prior to the engraving itself, for each stage removal by sublimation or incineration of the material constituting the tape, using image processing software well known to the man of the craft, an elementary pattern to be engraved or perforated on the tubular strip 2 is first scanned and then stored on a computer disk in the form of a file based on digital data, which is comparable to a signal digital. These digital data can also be entered directly without using a scanner.

Selon la présente invention, ce motif élémentaire peut constister en un dessin selon trois dimensions, par exemple longueur, largeur, et épaisseur qu'il faut graver ou perforer.According to the present invention, this elementary pattern can be a drawing in three dimensions, for example length, width, and thickness that must be engraved or perforated.

Ensuite, au moyen de cartes électroniques également connues, ce signal numérique est, d'une part, transmis au système de contrôle 17 via une entrée 23, de façon à synchroniser les mouvements de la tête d'émission 15 et du l'axe 13, par l'intermédiaire de leurs systèmes d'entraínement 16 et 32, et de leurs encodeurs respectifs 14, 25, et d'autre part, converti en un signal numérique, 1 bit ou 8 bits selon la complexité ou difficulté de la gravure ou perforation à réaliser, générant un profil de gravure en trois dimensions.Then, by means of electronic cards also known, this digital signal is, on the one hand, transmitted to the control system 17 via a 23, so as to synchronize the movements of the transmission head 15 and of the axis 13, through their drive systems 16 and 32, and of their respective encoders 14, 25, and on the other hand, converted into a signal digital, 1 bit or 8 bits depending on the complexity or difficulty of the engraving or perforation to achieve, generating a profile of three-dimensional engraving.

A la figure 5 est représenté schématiquement un exemple de signal numérique en mode 1 bit, correspondant à un dessin en forme de E que l'on souhaite graver sur la bande tubulaire 2. Ce dernier a été pixélisé sous la forme d'une matrice 36 comportant des cases 37 assimilables chacune à un point. Les cases 37 portant le chiffre 0 sont destinées à rester intactes, et par conséquent, le faisceau laser 20 devra être éteint lorsque la tête d'émission 15 les parcourra. En revanche, dans les cases 37 portant le chiffre 1, le faisceau laser 20 devra être actif et délivrer une puissance adéquate. Comme indiqué précédemment, ce signal numérique doit donc être communiqué, d'une part, au système de contrôle 17 afin que la gravure soit effectuée à l'endroit désiré de la bande tubulaire 2, et d'autre part, au laser pulsé 18, afin que celui-ci puisse générer convenablement le faisceau laser 20 à puissance variable en tous points.FIG. 5 is a schematic representation of an example of a signal in 1-bit mode, corresponding to an E-shaped drawing that is wants to engrave on the tubular strip 2. The latter has been pixelated under the form of a matrix 36 comprising cells 37 each assimilable to a point. Boxes 37 with the number 0 are intended to remain intact, and therefore, the laser beam 20 will have to be extinguished when the transmission head 15 will go through them. On the other hand, in boxes 37 with the number 1, the beam laser 20 will have to be active and deliver adequate power. As indicated previously, this digital signal must therefore be communicated, on the one hand, to control system 17 so that the engraving is performed at the desired location of the tube 2, and secondly, pulsed laser 18, so that it can properly generate the variable power laser beam in all points.

Pour ce faire, le signal numérique est traduit, à l'aide de cartes électroniques connues en elles-mêmes, en un signal analogique compris entre 0 et 10 volts, qui permet de couvrir toute la plage de puissance du laser pulsé 18, cette plage étant avantageusement comprise entre 0 et 1500 Watts. Ces différents niveaux de voltage sont alors convertis en niveaux de courant, par l'intermédiaire de cartes de régulation de courant connues de l'homme du métier. Celles-ci pilotent les électrodes situées dans chacun des huit tubes générateurs du faisceau laser 20, et l'intensité de la décharge électrique créée entre les anodes et les cathodes ionise le mélange gazeux, circulant à grande vitesse dans les tubes, sous haute tension de l'ordre de 20 000 volts. Le laser pulsé 18 est ainsi apte à générer le faisceau laser 20 de puissance variable, qui autorise la reproduction extrêmement fine du motif correspondant à une étape de gravure ou perforation. Ce faisceau laser 20 est finalement guidé grâce au jeu de miroirs 10 jusqu'à la tête d'émission 15, où il est focalisé par la lentille 22 sur la bande tubulaire 2 à graver ou perforer. Compte tenu de cette focalisation, le faisceau laser 20 délivré possède en section une plus grande dimension, de l'ordre de 0, 1 mm.To do this, the digital signal is translated, using maps electronic signals known in themselves, in an analog signal included between 0 and 10 volts, which covers the entire power range of the laser pulsed 18, this range being advantageously between 0 and 1500 Watts. These different voltage levels are then converted into current levels, through current regulation boards known to the man of the job. These control the electrodes located in each of the eight tubes generators of the laser beam 20, and the intensity of the electric discharge created between the anodes and the cathodes ionizes the gaseous mixture, flowing at great speed in the tubes, under high voltage of the order of 20 000 volts. The laser pulsed 18 is thus able to generate the laser beam 20 of variable power, which allows the extremely fine reproduction of the pattern corresponding to a step of engraving or perforation. This laser beam 20 is finally guided through the play of mirrors 10 to the transmission head 15, where it is focused by the lens 22 on the tubular strip 2 to be engraved or perforated. Given this focussing, the delivered laser beam has a larger section dimension, of the order of 0, 1 mm.

Parallèlement à cela, et de façon à ce que le faisceau laser 20 ainsi généré soit appliqué aux endroits souhaités, le système de contrôle 17 est informé des positions instantanées du cylindre 12 et de la tête d'émission 15 par le biais de leurs encodeurs 14, 25, et ce système de contrôle 17 peut alors agir sur les systèmes d'entraínement 16, 32 de ces derniers. Plus précisément, la tête d'émission 15 est translatée sur la vis d'entraínement 11 jusqu'à l'endroit désiré, et le cylindre 12 est entraíné en rotation autour de l'axe Δ. Compte tenu de l'impossibilité de conférer au cylindre 12 une vitesse de rotation parfaitement constante, le moyen de contrôle 17 réajuste régulièrement la vitesse de translation de la tête d'émission 15 par rapport à la vitesse de rotation du cylindre 12. Comme indiqué plus spécialement en figure 5, le faisceau laser 20 à puissance variable balaye alors le cylindre 2 sur son périmètre, en parcourant successivement des lignes notées A, B, C et D, s'agissant d'une étape de gravure.Parallel to this, and so that the laser beam 20 as well generated at the desired locations, the control system 17 is informed of the instantaneous positions of the cylinder 12 and the emission head 15 through their encoders 14, 25, and this control system 17 can then act on the drive systems 16, 32 of the latter. More precisely, the emission head 15 is translated on the drive screw 11 to the place desired, and the cylinder 12 is rotated about the axis Δ. Considering the impossibility of giving the cylinder 12 a rotational speed perfectly constant, the control means 17 regularly readjusts the speed of translation of the transmission head 15 with respect to the speed of rotation of the cylinder 12. As indicated more particularly in FIG. 20 variable power laser beam then scans the cylinder 2 on its perimeter, by successively browsing lines marked A, B, C and D, in the case of an etching step.

Les zones de la bande tubulaire 2 dans laquelle une gravure ou perforation doit être effectuée peuvent donc se définir comme étant chacune un assemblage de lignes parallèles situées sur le pourtour du cylindre 12, et devant être parcourues par le faisceau laser 20 à puissance variable. Il est ainsi possible de décomposer chaque cm2 de ces zones en un assemblage d'environ 100 lignes parallèles.The zones of the tubular strip 2 in which an etching or perforation must be carried out can therefore be defined as each being an assembly of parallel lines situated around the periphery of the cylinder 12, and to be traversed by the variable-power laser beam 20. It is thus possible to decompose each cm 2 of these zones into an assembly of about 100 parallel lines.

Il est à noter que, la gravure ou perforation s'effectuant par sublimation et/ou incinération du matériau constitutif de la bande tubulaire 2, soumis à l'énergie très élevée du faisceau laser 20, il ne reste plus après gravure ou perforation que quelques déchets sous forme de poussières de matériau, qui sont facilement évacuées par des procédés standards.It should be noted that, the engraving or perforation being effected by sublimation and / or incineration of the constituent material of the tubular strip 2, subjected to the very high energy of the laser beam 20, there is no longer any engraving or perforation only some waste in the form of dust from material, which are easily removed by standard methods.

Comme décrit précédemment, au plan technique, il n'existe pas de différence entre une étape de gravure et une étape de perforation, quant à la mise en oeuvre de l'équipement représenté à la figure 4. Seuls diffèrent les fichiers numériques des motifs à graver et perforer respectivement.As described previously, at the technical level, there is no difference between an etching step and a perforation step, as to the implementation of the equipment shown in Figure 4. Only differ digital files of the patterns to be engraved and perforated respectively.

De manière préférée, comme montré par le rapprochement des figures 6, 7, puis 2, un dispositif selon la présente invention est obtenu par enlèvement du matériau constitutif, sous l'effet du faisceau laser, par étapes successives.Preferably, as shown by the reconciliation of FIGS. 6, 7, and 2, a device according to the present invention is obtained by removal of the constituent material, under the effect of the laser beam, in stages successive.

Au minimum, on exécute, séparément et successivement :

  • au moins une étape de gravure, pendant laquelle on enlève du matériau constitutif pour graver la sculpture tridimensionnelle du coté de la face active 2a de la bande 2, pour obtenir la sculpture tridimensionnelle 3, non perforée, telle que représentée à la figure 6 ;
  • et au moins une étape de perforation, pendant laquelle on enlève du matériau constitutif pour obtenir, à partir de la sculpture tridimensionnelle 3, telle que représentée à la figure 6, les canaux traversants 71 et 72 ; par exemple, à cette fin, on exécute au moins une première étape de perforation, au terme de laquelle les canaux traversants 71 sont obtenus uniquement, et demeurent non débouchants (conf. fig. 7), et une deuxième étape de perforation au terme de laquelle les canaux traversants 72 sont obtenus ainsi que les canaux traversants 71, en totalité, lesquels débouchent alors sur la face passive 2b de la bande (conf. fig. 2).
At a minimum, one executes, separately and successively:
  • at least one etching step, during which constituent material is removed for etching the three-dimensional sculpture on the side of the active face 2a of the strip 2, to obtain the three-dimensional sculpture 3, which is not perforated, as represented in FIG. 6;
  • and at least one perforation step, during which constituent material is removed to obtain, from the three-dimensional sculpture 3, as shown in FIG. 6, the through channels 71 and 72; for example, for this purpose, at least a first perforation step is performed, at the end of which through-channels 71 are obtained only, and remain non-through (see Fig. 7), and a second perforation step at the end of the through channels 72 are obtained as well as the through channels 71, all of which then open on the passive side 2b of the strip (see Fig. 2).

D'une étape de gravure à une étape de perforation, d'une part, et éventuellement entre les différentes étapes de perforation, d'autre part, l'enveloppe tubulaire 2 du matériau constitutif demeure montée sur le cylindre 12, de manière à conserver le même repérage et les mêmes références pour les différents passages du faisceau laser.From an etching step to a perforation step, on the one hand, and possibly between the different stages of perforation, on the other hand, the tubular casing 2 of the constituent material remains mounted on the cylinder 12, so as to keep the same location and the same references for the different passages of the laser beam.

La figure 6 est une vue partielle en coupe transversale, après gravure, selon le mode 1 bit ou 8 bit, de l'enveloppe tubulaire 2, en coupe transversale, montrant en particulier sa sculpture 3 du côté de la face active 2a. Après balayage du faisceau laser 20, on constate que les plateaux 5a sont restés intacts. Chaque plateau 5a appartenant à une zone en sailie 5 modelante est raccordé au talon 6 par l'intermédiaire d'un flanc oblique ou talus 5b. Entre les zones en saillie 5, modelantes, sont creusées les zones en creux 4, également modelantes, correspondant aux cases 37 portant le chiffre 1 sur la figure 5, et dans lesquelles le faisceau laser 20 à puissance variable a été actif. En revanche, chaque plateau 5a correspond à une case 37 portant le chiffre 0 selon la figure 5. Sur la base du signal numérique générant le profil de gravure en trois dimensions, et par modulation du nombre d'impulsions constituant le faisceau laser 20, chaque flanc oblique 5b est déterminé automatiquement par les cartes de régulation de courant, et correspond schématiquement à la transition entre deux cases 37 voisines, selon le schéma de la figure 5, portant respectivement les chiffres 1 et 0. Par ailleurs, le fait de créer un flanc oblique 5b, autour ou de part et d'autre de chaque plateau 5a, présente l'avantage de conférer à chaque zone en saillie 5, modelante, une meilleure tenue mécanique au fil du temps.FIG. 6 is a partial view in cross-section, after engraving, in the 1-bit or 8-bit mode, of the tubular casing 2, in section transverse, showing in particular its sculpture 3 on the side of the active face 2a. After scanning the laser beam 20, it can be seen that the plates 5a are remained intact. Each tray 5a belonging to a zone 5 modeling is connected to the heel 6 via an oblique sidewall or embankment 5b. Between the projecting zones 5, modeling, are hollowed zones hollow 4, also modeling, corresponding to boxes 37 carrying the 1 in Figure 5, and in which the laser beam 20 power variable has been active. On the other hand, each plate 5a corresponds to a box 37 0 in accordance with Figure 5. On the basis of the digital signal generating the three-dimensional etching profile, and by modulation of the number of pulses constituting the laser beam 20, each oblique flank 5b is automatically determined by the current regulation boards, and schematically corresponds to the transition between two adjacent cells 37, according to the diagram of Figure 5, respectively bearing the numbers 1 and 0. By elsewhere, creating an oblique flank 5b, around or on both sides of each plate 5a has the advantage of conferring on each projecting zone 5, modeling, better mechanical strength over time.

Par souci de simplification, la présente description est plus spécialement basée sur un procédé de gravure faisant appel à un signal numérique selon le mode 1 bit. Néanmoins, selon la complexité ou difficulté du motif à graver ou perforer, le signal numérique utilisé peut être préférentiellement réalisé selon le mode 8 bits. En effet, ce dernier offre 256 combinaisons numériques qui, après traduction en signal analogique, donnent naissance à 256 niveaux de puissance du laser. Il est alors possible, aux endroits souhaités de l'enveloppe tubulaire 2, de faire varier très finement la densité et/ou la profondeur des zones frappées par le faisceau laser 20.For the sake of simplification, this description is more specially based on an engraving process using a signal digital mode 1 bit. Nevertheless, depending on the complexity or difficulty of a pattern to be engraved or perforated, the digital signal used may be preferentially carried out according to the 8-bit mode. Indeed, the latter offers 256 combinations which, after translation into an analogue signal, give birth to 256 laser power levels. It is then possible desired locations of the tubular casing 2, to vary very finely the density and / or depth of areas struck by the laser beam 20.

Par ailleurs, avec le procédé décrit précédemment, la gravure ou perforation peut être réalisée à différents degrés de profondeur. En effet, la pulsation modulable du faisceau laser 20 peut se faire à de très faibles niveaux de puissance comme à de très forts niveaux, ceci dépendant du niveau de puissance choisi par l'opérateur lors du réglage des paramètres de gravure ou perforation. Ainsi, à de faibles puissances, le laser pulsé marque simplement la pièce, sans lui donner véritablement de relief. A des puissances moyennes, le creux peut atteindre 1 mm de manière constante, et ceci avec une précision de l'ordre du dixième. Enfin, à de fortes puissances, le laser peut perforer la pièce de manière très précise. De plus, il est possible de réaliser pour un même motif plusieurs profondeurs de gravure ou perforation, selon un risque de décadrage maximal de l'ordre de 0, 1 mm, en effectuant différents passages du faisceau laser à différents niveaux de puissance. Selon la présente invention des motifs comportant des perforations 71, 72, en parfait repérage avec des zones en creux 4 et en saillie 5 peuvent donc être réalisés. Moreover, with the method described above, etching or perforation can be performed at different depths. Indeed, the Modulating pulsation of the laser beam 20 can be done at very low levels as at very high levels, depending on the level of power chosen by the operator when setting the burning parameters or perforation. Thus, at low powers, the pulsed laser simply marks the piece, without really giving it relief. At middle powers, the hollow can reach 1 mm steadily, and this with a precision of the order of the tenth. Finally, at high power, the laser can perforate the room very precisely. Moreover, it is possible to realize for the same reason several depths of engraving or perforation, according to a risk of decadration maximum of about 0.1 mm, making different beam passes laser at different power levels. According to the present invention, patterns having perforations 71, 72, in perfect registration with zones in Hollow 4 and projecting 5 can be made.

A titre de variante, le matériau constitutif de la bande peut être à base de fibres ou fils de verre, imprégnés avec une résine thermo-durcie ou thermo-plastique.As a variant, the constituent material of the strip may be base of fibers or glass threads, impregnated with a thermosetting resin or thermoplastic.

Claims (12)

Dispositif de modelage (1) comprenant une bande (2) faite en au moins un matériau constitutif, par exemple un matériau élastomère, souple dans la direction d'extension, ou longueur, de la bande, et dur dans toute direction perpendiculaire, ou épaisseur, de ladite bande, ladite bande comprenant sur l'une de ses faces, ou face active (2a), une sculpture tridimensionnelle (3) ou gravure, obtenue directement dans le matériau constitutif de la bande, en relief, c'est-à-dire s'étendant selon la longueur, l'épaisseur, et la dimension transversale, ou largeur, de ladite bande, ladite sculpture définissant une ou des zones (4) en creux par rapport à une ou des zones en saillie (5), ladite sculpture demeurant à distance de l'autre face, ou face passive (2b), de la bande par un talon (6) monobloc avec ladite sculpture, caractérisé en ce que une ou plusieurs zones (5) en saillie, dites modelantes, comportent chacune un sommet aplati présentant un plateau (5a) d'extension parallèle à la face passive (2b) de la bande, et une pluralité de canaux (71) traversent chaque zone modelante en saillie, dudit plateau (5a) à la face passive (2b).Modeling device (1) comprising a strip (2) made of at least one constituent material, for example an elastomeric material, flexible in the direction of extension, or length, of the strip, and hard in any perpendicular direction, or thickness of said strip, said strip comprising on one of its faces, or active face (2a), a three-dimensional sculpture (3) or etching, obtained directly in the material constituting the strip, in relief, that is to say extending along the length, the thickness, and the transverse dimension, or width, of said strip, said sculpture defining one or more zones (4) recessed with respect to one or more projecting zones (5), said sculpture remaining at a distance from the other side, or passive face (2b), of the band by a heel (6) integral with said sculpture, characterized in that one or more zones (5) projecting, said modeling, comprise each having a flattened top having a plate (5a) of parallel extension at the passive side (2b) of the strip, and a plurality of channels (71) pass through each projecting modeling zone, from said plate (5a) to the passive face (2b). Dispositif de modelage (1) comprenant une bande (2) faite en au moins un matériau constitutif, par exemple un matériau élastomère, souple dans la direction d'extension, ou longueur, de la bande, et dur dans toute direction perpendiculaire, ou épaisseur, de ladite bande, ladite bande comprenant sur l'une de ses faces, ou face active (2a), une sculpture tridimensionnelle (3), ou gravure, obtenue directement dans le matériau constitutif de la bande, en relief, c'est-à-dire s'étendant selon la longueur, l'épaisseur, et la dimension transversale, ou largeur, de ladite bande, ladite sculpture définissant une ou des zones en creux (4) par rapport à une ou des zones (5) en saillie, ladite sculpture demeurant à distance de l'autre face, ou face passive (2b), de la bande par un talon (6) monobloc avec ladite sculpture, caractérisé en ce que une ou plusieurs zones (4) en creux, dites modelantes, comportent chacune un fond aplati présentant un plateau (4a) d'extension parallèle à la face passive (2b) de la bande, et une pluralité de canaux (72) traversent chaque zone modelante en creux, dudit plateau (4a) à la face passive (2b). Modeling device (1) comprising a strip (2) made of at least one constituent material, for example an elastomeric material, flexible in the direction of extension, or length, of the strip, and hard in any perpendicular direction, or thickness of said strip, said strip comprising on one of its faces, or active face (2a), a three-dimensional sculpture (3), or etching, obtained directly in the material constituting the strip, in relief, that is, that is extending along the length, thickness, and transverse dimension, or width, of said web, said sculpture defining one or more recessed areas (4) with respect to one or more projecting zones (5). , said sculpture remaining at a distance from the other face, or passive face (2b), of the band by a heel (6) integral with said sculpture, characterized in that one or more zones (4) hollow, called modeling, each comprise a flattened bottom having a plate (4a) extending parallel to the passive face (2b) of the strip, and a plurality of channels (72) pass through each hollow modeling zone, from said plate (4a) to the passive face (2b). Dispositif selon la revendication 1, caractérisé en ce que une ou plusieurs zones en creux (4), dites modelantes, comportent chacune un fond aplati présentant un plateau (4a) d'extension parallèle à la face passive (2b) de la bande, et une pluralité de canaux (72) traversent chaque zone modelante en creux, dudit plateau (4a) à la face passive (2b).Device according to claim 1, characterized in that one or more hollow areas (4), called modeling, each comprise a flattened bottom having a plate (4a) of extension parallel to the passive face (2b) of the strip, and a plurality of channels (72) pass through each hollow modeling zone from said plate (4a) to the passive face (2b). Dispositif selon la revendication 1 ou 2, en forme d'enveloppe cylindrique, caractérisé en ce que la bande est obtenue refermée sur elle-même, sans joint transversal.Device according to claim 1 or 2, in the form of a cylindrical envelope, characterized in that the strip is obtained closed on itself, without transverse seal. Dispositif constitué par une plaque, avec ou sans raccord, comprenant une bande ou portion de bande selon la revendication 1 ou 2.Device constituted by a plate, with or without connection, comprising a band or band portion according to claim 1 or 2. Dispositif selon la revendication 1, caractérisé en ce que le matériau constitutif de la bande est un élastomère dont la dureté est au moins égale à 20 Shore A, et préférentiellement comprise entre 30 Shore A et 90 Shore A.Device according to claim 1, characterized in that the material constituting the strip is an elastomer whose hardness is at least 20 Shore A, and preferably between 30 Shore A and 90 Shore A. Dispositif selon la revendication 1, caractérisé en ce que chaque zone en saillie 5, dite coopérante, comporte un flanc oblique (5b) exempt de toute perforation traversante selon l'épaisseur, débouchant sur ledit flanc oblique.Device according to claim 1, characterized in that each projecting zone 5, said cooperating, comprises an oblique flank (5b) free of any perforation through the thickness, opening on said oblique flank. Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les canaux traversants (71, 72) ont une section au plus égale en diamètre à 2 mm, et préférentiellement comprise entre 0,1 et 1 mm.Device according to any one of claims 1 to 7, characterized in that the through channels (71, 72) have a section at most equal in diameter to 2 mm, and preferably between 0.1 and 1 mm. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la bande (2) a une épaisseur hors tout, au plus égale à 15 mm, et préférentiellement comprise entre 1 et 10 mm.Device according to any one of claims 1 to 8, characterized in that the strip (2) has an overall thickness, at most equal to 15 mm, and preferably between 1 and 10 mm. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la profondeur de la sculpture tridimensionnelle (3) est au plus égale à 2 mm, et préférentiellement comprise entre 0,5 et 1,5 mm.Device according to any one of claims 1 to 9, characterized in that the depth of the three-dimensional sculpture (3) is at most equal to 2 mm, and preferably between 0.5 and 1.5 mm. Procédé d'obtention d'un dispositif selon la revendication 4, mis en oeuvre avec un équipement (11) de gravure avec un faisceau laser (20), procédé selon lequel la bande du matériau constitutif ayant la forme d'une enveloppe tubulaire (2) continue est montée sur un cylindre (12), en relation avec une tête mobile (15) d'émission dudit faisceau laser, et on exécute au moins une étape d'enlèvement dudit matériau constitutif, selon laquelle le faisceau laser (20) se déplace parallèlement à l'axe de rotation (Δ) du cylindre (12) en correspondance avec un déplacement en rotation du cylindre (12), caractérisé en ce que on exécute, séparément et successivement, au moins une étape de gravure (cf figure 6), pendant laquelle on enlève du matériau constitutif pour graver la sculpture tridimensionnelle (3) du côté de la face active (2a) de la bande, et au moins une étape de perforation (cf figure 7), pendant laquelle on enlève du matériau constitutif pour obtenir, à partir de la sculpture (3) tridimensionnelle, les canaux traversants (71, 72), l'enveloppe tubulaire (2) du matériau constitutif demeurant montée sur le cylindre (12) lorsqu'on passe d'une étape de gravure à une étape de perforation.Method for obtaining a device according to Claim 4, implemented with a laser beam etching equipment (11), the method according to which the strip of the constituent material having the shape of a tubular envelope (2) ) is mounted on a cylinder (12), in relation to a moving head (15) for transmitting said laser beam, and at least one step of removing said constituent material, in which the laser beam (20) is moves parallel to the axis of rotation (Δ) of the cylinder (12) in correspondence with a rotational displacement of the cylinder (12), characterized in that one carries out, separately and successively, at least one etching step (cf FIG. ), during which material is removed for engraving the three-dimensional sculpture (3) on the side of the active face (2a) of the strip, and at least one perforation step (see Figure 7), during which the constituent material is removed. to get to from the three-dimensional sculpture (3), the through-channels (71, 72), the tubular envelope (2) of the constituent material remaining mounted on the cylinder (12) when going from an etching step to a step of perforation. Procédé selon la revendication 11, caractérisé en ce que on exécute au moins une première étape de perforation, au terme de laquelle les canaux traversants (71) demeurent non débouchants, et une deuxième étape de perforation, au terme de laquelle les canaux traversants (71, 72) débouchent sur la face passive (2b) de la bande.Method according to claim 11, characterized in that at least a first perforation step is performed, after which the through-channels (71) remain non-through, and a second perforation step, at the end of which the through-channels (71) , 72) open on the passive side (2b) of the band.
EP04017697A 2003-08-04 2004-07-27 Method and device for obtaining a modelling device Withdrawn EP1504926A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0309608A FR2858584B1 (en) 2003-08-04 2003-08-04 METHOD AND EQUIPMENT FOR OBTAINING A MODELING DEVICE
FR0309608 2003-08-04

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231413B (en) * 1954-12-24 1966-12-29 United Plastics Ind Inc Embossing roller for embossing films made from thermoplastics
DE4324970A1 (en) * 1993-07-24 1995-01-26 Benecke Kaliko Ag Process for producing an embossing roller for continuously embossing the surface of a thermoplastic film with a pattern
US20020124954A1 (en) * 2001-03-07 2002-09-12 Michael Maker Method for producing an embossing roller from silicone rubber for the continuous embossing of the surface of a thermoplastic film

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231413B (en) * 1954-12-24 1966-12-29 United Plastics Ind Inc Embossing roller for embossing films made from thermoplastics
DE4324970A1 (en) * 1993-07-24 1995-01-26 Benecke Kaliko Ag Process for producing an embossing roller for continuously embossing the surface of a thermoplastic film with a pattern
US20020124954A1 (en) * 2001-03-07 2002-09-12 Michael Maker Method for producing an embossing roller from silicone rubber for the continuous embossing of the surface of a thermoplastic film

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FR2858584B1 (en) 2005-09-09

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