EP2683553B1 - Procédé et dispositif d'usinage d'un cylindre, en particulier d'un cylindre d'impression ou d'estampage - Google Patents

Procédé et dispositif d'usinage d'un cylindre, en particulier d'un cylindre d'impression ou d'estampage Download PDF

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Publication number
EP2683553B1
EP2683553B1 EP12710024.6A EP12710024A EP2683553B1 EP 2683553 B1 EP2683553 B1 EP 2683553B1 EP 12710024 A EP12710024 A EP 12710024A EP 2683553 B1 EP2683553 B1 EP 2683553B1
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EP
European Patent Office
Prior art keywords
cylinder
laser beam
laser
measured
sensor
Prior art date
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EP12710024.6A
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German (de)
English (en)
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EP2683553A1 (fr
Inventor
Jörg POHÉ
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.)
Hell Gravure Systems GmbH and Co KG
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Hell Gravure Systems GmbH and Co KG
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Publication of EP2683553A1 publication Critical patent/EP2683553A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
    • B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/003—Preparing for use and conserving printing surfaces of intaglio formes, e.g. application of a wear-resistant coating, such as chrome, on the already-engraved plate or cylinder; Preparing for reuse, e.g. removing of the Ballard shell; Correction of the engraving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/18—Curved printing formes or printing cylinders
    • B41C1/184—Curved printing formes or printing cylinders by transfer of the design to the cylinder, e.g. from a lithographic printing plate; by drawing the pattern on the cylinder; by direct cutting of the pattern on the cylinder

Definitions

  • Method and device for processing a cylinder in particular a printing or embossing cylinder.
  • the cylinder is rotated at a high speed while the laser beam is directed onto the cylinder from a laser processing member, which is also referred to as a laser processing head, in the axial direction of the cylinder, so that the laser beam travels along adjacent helical tracks the cylinder surface impinges.
  • a laser processing member which is also referred to as a laser processing head
  • the laser beam is moved along adjacent tracks with a width of about 20 to 30 microns over the cylinder surface and thereby modulated its intensity with a modulator located in the beam path to the depth and the length of the tracks so control that theoretically results in the desired well shape and the desired well volume.
  • the overburden in the interior of wells results in geometrical cup parameters, in particular the well depth but also cross-sectional dimensions within the wells, not meeting the desired target value, the overburden on the edge of the wells results in an uneven surface during printing Cylinder surface rests and excess ink can not be stripped clean.
  • the object of the invention is to improve known methods and devices in such a way that it is also possible to correct irregular deviations.
  • the device according to the invention is characterized in that the control device controls the carriage and the laser in order to rework structural elements, in which the measured value deviates from the nominal value, with the laser beam, if the deviation exceeds a predetermined amount.
  • the invention is based on the idea of applying the correction of each structural element to be corrected to the extent to which the measured value of this structural element deviates from the nominal value of this structural element.
  • a measurement is used to determine quantitatively in which structural elements the measured value deviates from the nominal value and how large the deviation is.
  • the degree of deviation is compared with a predetermined threshold value, to then correct only those structural elements by post-processing with the laser beam, in which the deviation exceeds the predetermined level or the predetermined threshold.
  • post-processing also makes it clear that processing of this part with the laser beam has already taken place before the measurement of a part of the cylinder.
  • the term measured value when used, this need not be a directly measured value, but may also be a value derived from a directly measured value. However, the measured value is a quantitative measured value which allows a statement about the degree of deviation from the nominal value.
  • the term cylinder or cylinder surface also includes a material spanned on the cylinder or its surface.
  • a preferred embodiment of the method according to the invention provides that not only individual structural elements of the structure produced are measured, as in the prior art, but all structural elements in which, as a result of deposition of overburden, such as melt ejection or the like, deviations of the measured value from the nominal value can occur. which show too much material.
  • the measured value of all the measured structural elements is compared with the corresponding nominal value of each structural element and then all the structural elements in which the deviation exceeds the predetermined level or the predetermined threshold value are reworked.
  • the post-processing of a structural element material is removed with the laser beam, wherein the removal is controlled by a corresponding modulation of the laser beam so that the degree of erosion about the degree of deviation of the measured value from the setpoint. Due to the individual adaptation of the material removal to the deviation, the measured value after the post-processing will generally correspond to the nominal value, especially since post-processing will lead to a deposition of melt ejection or other overburden much less frequently than during initial processing mutual distances of the reworked wells are larger and overall less material is removed, whereby a better evaporation of the material is ensured by the laser beam.
  • another preferred embodiment of the invention provides that the machining of the cylinder with the laser beam and the measurement of the structures produced thereby take place simultaneously. If the processing and the measurement can be carried out at the same speed, a laser processing element serving to irradiate the laser beam and a sensor used to measure the structures or the individual structural elements are expediently mounted on a common carriage or carriage which moves during the rotation of the cylinder in the axial direction can move along this, so that a constant distance between the laser processing member and the sensor is maintained.
  • the serving for measuring sensor is preferably arranged separately from the laser processing organ on a separate carriage or carriage, which has its own drive and the carriage or carriage with the laser processing organ expediently follows in a variable axial distance ,
  • the measurement of the structures is advantageously carried out in the circumferential direction and / or in the axial direction of the cylinder at a sufficient distance from the processing with the laser beam.
  • a distance of only a few tracks in the axial direction of the cylinder or a distance of about 10 degrees in the circumferential direction of the cylinder is sufficient, but the distance is preferably selected to be slightly larger.
  • the senor may be located on the opposite side of the cylinder from the laser processing member, i. be positioned in the circumferential direction at an angular distance of about 180 degrees from the laser processing element, because at this point an influence by melt ejection of the laser processing is practically impossible.
  • the structure produced on the cylinder surface includes not only the wells excavated with the laser beam but also areas between or adjacent to the wells in which deposition of melt discharge or other overburden may also occur during processing with the laser beam, preferably not only Measured structural elements within the wells and post-processed with the laser beam when the deviation of the measured value from the desired value exceeds the predetermined level, but also at least a portion of the previously un-laser-processed areas of the cylinder surface, said areas at least adjacent to the edges of the wells surfaces and in particular the surfaces of narrow webs between adjacent recesses, on which there is also often a deposit of overburden.
  • Such webs are mainly webs between adjacent wells of gravure cylinders, which serve as a support for a squeegee during printing and therefore should not have any overburden caused by overburden.
  • the geometric measured value determined during the measurement is advantageously the radial distance between the unprocessed cylinder surface and the surface of the structural elements, the information relating radially to the cylinder.
  • overburden deposited within the depressions can be detected, since there the measured distance from the unprocessed cylinder surface is lower than the nominal value, as well as overburden deposited on the edges of depressions, since there the measured distance from the unprocessed cylinder surface is greater than the setpoint, which is zero in these ranges.
  • the quantitative determination of the aforementioned radial distance between the unprocessed cylinder surface and the surface of the structural elements is preferably carried out by a non-contact measuring method, for example by laser scanning or by a confocal or chromatic-confocal measuring method, with which the structural elements with an accuracy of less than 3 can be detected and preferably less than 1 micron.
  • a non-contact measuring method for example by laser scanning or by a confocal or chromatic-confocal measuring method, with which the structural elements with an accuracy of less than 3 can be detected and preferably less than 1 micron.
  • the distance between a sensor and the surface of the features is measured and, after subtracting the distance between the sensor and the unprocessed cylinder surface, compared with the setpoint of the features, i. for example, the desired depth of a pixel within a well.
  • the quantitative measurement of the structural elements and the subsequent post-processing with the laser beam can be eliminated not only deposition of melt ejection or other overburden, but also all other deviations in which an excess of material is present on individual or possibly on all structural elements. Such deviations may be caused, for example, by a decrease in the intensity of the laser beam during processing due to the evaporation of material, as the laser beam may be partially scattered by the vaporized material and thus weakened in intensity.
  • the engraving machine 10 shown schematically in the drawing is used, for example, for engraving gravure cylinders 12, which are clamped individually in the engraving machine 10 and by a rotary drive (not shown) with high rotational speed about its longitudinal central axis 14 in rotation.
  • the engraving of a clamped in the machine 10 and rotated in rotogravure cylinder 12 is effected by means of a laser beam 16 which is directed by a laser processing member 18 on the surface 20 of the gravure cylinder 12 to excavate in the cylinder surface 20 at the desired locations depressions in the form of wells 22, which later serve to accommodate ink.
  • the engraving machine 10 comprises, in addition to the rotary drive, two holders 24 for clamping the gravure cylinder 12, an engraving carriage 26 which can be moved by an engraving carriage drive (not shown) by means of a spindle 28 in the axial direction of the impression cylinder 12 and carries the laser processing member 18, and a control panel 30 which is movable on guides 32 in the axial direction along the cylinder 12.
  • the laser processing device 18 is connected by an optical fiber 32 to a fiber laser 34, which together with its pumping source 36 and a heat sink 38 for cooling the pump source 36 is located in a stationary lower part 40 of the engraving machine 10, which further comprises a cooling system 39 Cooling of the heat sink 38, a machine control unit 42 for controlling the rotary drive and the engraving car drive and a laser control unit 44 includes.
  • the laser beam generated by the fiber laser 34 is fed through the optical fiber 32 in the gas-tight closed tubular laser processing device 18, inter alia, a controlled by the laser control unit 44 acousto-optic modulator (not shown) for deflection and intensity modulation of the laser beam and optical elements (not illustrated) for focusing the laser beam in a processing spot 46 on the cylinder surface 20 comprises.
  • acousto-optic modulator not shown
  • intensity modulation of the laser beam and optical elements (not illustrated) for focusing the laser beam in a processing spot 46 on the cylinder surface 20 comprises.
  • a measuring head 48 mounted on the engraving carriage 26.
  • a non-contact laser path sensor or laser distance meter (not shown) is mounted, with which the distance between the sensor and a sensor opposite point on the cylinder surface 20 can be measured with an accuracy of about 1 micron.
  • the recess 50 has oblique lateral boundary walls 52, which, however, have no smooth surface, but just like the adjacent to the upper edges 54 of the boundary walls 52 areas of the cylinder surface 20 are very uneven.
  • These bumps consist to a large extent of overburden 56, which has deposited along the edges 54 of the recess 50 on the cylinder surface 20 and within the recess 50 on the boundary walls 52.
  • the deposition of the spoil 56 is mainly caused by the fact that the cylinder material is not completely evaporated along the path of movement of the processing spot 46, but only partially melted.
  • the melt Due to the volumetric expansion of the evaporating material, a portion of the melt is ejected from the well 50 in the form of small droplets and settles along their edges 54 on the cylinder surface 20 where the droplets cool and cake. Another part of the molten material is either not even ejected from the recess 50 or comes after the ejection back into the recess 50, where the overburden 56 settles or precipitates mainly on the boundary walls 52.
  • the deposited overburden 56 may contain other contaminants, such as combustion products or the like, in addition to the melt discharge.
  • the engraving machine 10 has a suction device (not shown) in order to suck off the melt ejection before it can settle on the cylinder surface 20, however, this succeeds only incompletely.
  • the laser beam 16 emerging from the laser processing element 18 and focused on the cylinder surface 20 has a beam diameter of approximately 10 ⁇ m.
  • the laser beam 16 has an intensity of about 600 MW / cm 2 , which is sufficient for an exposure time of about 1 microseconds to evaporate within the processing spot 46 of about 20 microns diameter so much copper that in the cylinder surface 20 a crater-shaped depression with a Depth of up to 35 microns can be excavated.
  • the diameter of the laser beam 16 and the spot diameter of the processing spot 46 are significantly smaller than the dimensions of the wells 22, the latter can each be formed or assembled from a plurality of individually engraved pixels with variable depth, as shown in the EP 1 568 490 A1 the applicant is described.
  • the wells 22 formed from a plurality of pixels are engraved in each case by 16 several parallel groove-shaped depressions 50 are excavated along immediately adjacent tracks, which overlap slightly with adjacent wells 50, so that only low ridges on the ground between them the wells 22 stop.
  • Each of the groove-shaped depressions 55 is formed by a plurality of crater-shaped depressions, each corresponding to a pixel.
  • the crater-shaped depressions arranged along each track 60 overlap in the longitudinal direction of the track 60, so that together they form a continuous recess 60 in which only small burrs remain at the bottom of the cells 22 between adjacent pixels.
  • the individual pixels can be engraved with different depths by the intensity of the laser beam by an intensity modulation by means of the acousto-optic modulator of the laser processing member 18 is changed from pixel to pixel, so that each pixel can impart a desired depth regardless of the depth of adjacent pixels.
  • the length of the recesses 50 can be controlled by the Laser beam is directed by the serving as a deflector acousto-optic modulator on the cylinder surface 20 or deflected away from this, depending on whether there is a well to be engraved or not. By a graduated length of the adjacent recesses 50, the wells 22 get the desired generally diamond-shaped outline.
  • a master copy is divided by screens into individual grid, in each of which one of the wells 22 is arranged.
  • each predetermined dimensions are assigned to each cup, which correspond to the tonal value of the artwork at the location of the grid with the well 22.
  • the depth of the individual pixels is determined, from which the cup 22 is formed.
  • the acousto-optic modulator included in the laser processing member 16 is controlled by the laser controller 44 based on the engraving data derived from the master so that the intensity of the laser beam 16 varies according to the desired engraving depth becomes.
  • overburden 56 When engraving the cups 22 with the laser beam 16, there is also a deposit of overburden 56, as previously with reference to 3 and 4 described.
  • the overburden 56 found in part within the wells 22 and partly on the webs 62 between adjacent wells 22, as best shown in FIG Fig. 6 and 8th shown.
  • a part of the overburden 56 within the wells 22 is here formed by melt ejection, which is generated during excavation of adjacent wells 22 or when digging an adjacent groove-shaped depression 50 within the same well 22.
  • melt ejection which is generated during excavation of adjacent wells 22 or when digging an adjacent groove-shaped depression 50 within the same well 22.
  • the amount of deposited overburden 56 from wells 22 to well 22 can change greatly, but also the distribution of the overburden 56 within the well 22 or on the webs 62nd
  • the three-dimensional geometric structure of the cylindrical surface 20 produced by the laser beam 16 during laser engraving is first quantitatively measured, which consists of wells 20 and unprocessed surface areas, such as webs 62, between the wells 20.
  • To measure the surface 20 of the gravure cylinder 12 is scanned by the laser path sensor in the measuring head 48 in the direction of movement behind the laser processing member 18 with a laser beam which is directed in the radial direction on the surface 20 of the gravure cylinder 12 and the machined or unprocessed surface 20th partially reflected back towards the sensor.
  • the distance between the surface 20 and the laser path sensor can then be measured, for example, by evaluating the phase shift between the scanning beam and the reflected beam with an accuracy of about 1 ⁇ m.
  • the measurement of the distance is made along the previously engraved tracks 60, taking surface profiles as in 8 and 9 shown.
  • the measuring head is mounted on a separate measuring carriage
  • the measurement is carried out at a speed or sampler rate that is matched to the rotational speed of the gravure cylinder 12 and the size of the disturbing Abraumablagerungen.
  • a speed or sampler rate that is matched to the rotational speed of the gravure cylinder 12 and the size of the disturbing Abraumablagerept.
  • the dimensions of the spurious overburden deposits are about 10 ⁇ m
  • at least four to five readings are taken at each pixel to detect all such overburden deposits.
  • preferably more than ten and, preferably, approximately 20 measured values per pixel can be recorded, from which an average value is then formed.
  • a peripheral speed of the gravure cylinder of about 10 m / s and five to twenty measurements per pixel results in a sampler rate of about 250 kHz to 1 MHz.
  • an average actual depth of each pixel can be calculated quantitatively by determining the distance between the laser displacement sensor and the average of the measured distances the unprocessed cylinder surface 20 is subtracted.
  • the measured pixel lies within a well 22.
  • the measured value i. the determined from the distance measurement engraving depth of the pixel, compared with the target value of the engraving depth of the same pixel, which was previously based on the engraving with the laser beam 16. If a deviation is detected in the comparison and this deviation exceeds a predetermined threshold, which corresponds for example to 5 to 10 ⁇ m to the dimensions of interfering overburden 56, the pixel is subsequently reworked with the laser beam 16.
  • the intensity of the laser beam 16 is controlled by means of the acousto-optic modulator in the laser processing member 18 so that the removed in the post-processing amount of material corresponds approximately to the measured deviation from the target value. If no deviation is detected in the comparison, or if a detected deviation does not exceed the predetermined threshold, the pixel is not post-processed.
  • the measured pixel lies on the unprocessed surface 20 of the gravure cylinder 12.
  • the measured value i. the average projection of the pixel determined from the distance measurement over the unprocessed smooth cylinder surface 20 is compared directly with a predetermined threshold value which corresponds to the maximum permissible projection. If the measured value is greater than the threshold value and, for example, more than 5 to 10 ⁇ m, the pixel is subsequently finished with the laser beam 18. In this case as well, the intensity of the laser beam 16 during the post-processing is controlled in accordance with the measured deviation of the measured value from the threshold value in order to substantially completely remove the overburden 56 from the surface 20. If the reading is less than the threshold, the pixel is not post-processed.
  • the measurement of the three-dimensional structure of the machined cylinder surface 20 can be made during the engraving by measuring an already finished engraved part of the surface 20.
  • the distance between the already finished engraved part, which is to be measured, of the part still being processed, in which is being engraved with the laser beam 16, must be sufficiently large to rule out that melt ejection from the part being processed deposited after the measurement on the measured part.
  • the measuring head 48 is mounted on a separate measuring carriage 64 which can be moved to measure the cylinder surface 20 by means of its own feed or spindle drive 66 on the side facing away from the engraving 26 side of the cylinder 12 along.
  • the measuring head 48 is equipped there with a non-contact confocal or chromatic-confocal sensor 70, which also measures the radial distance between the sensor 70 and the opposite cylindrical surface 20.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Claims (15)

  1. Procédé d'usinage d'un cylindre au moyen d'au moins un faisceau laser, dans lequel des creux sont ménagés au moyen du faisceau laser dans une surface du cylindre afin de générer une structure sur la surface du cylindre, dans lequel des éléments de structure individuels de la structure générée sont mesurés sur au moins une partie de la surface du cylindre, dans lequel au moins une valeur de mesure géométrique de chaque élément de structure mesuré est comparée à une valeur nominale géométrique correspondante du même élément de structure afin de déterminer un écart entre la valeur de mesure et la valeur nominale, dans lequel une correction est effectuée sur la base des écarts déterminés et dans lequel, lors de la correction, les éléments de structure (50, 56, 62) pour lesquels l'écart entre la valeur de mesure et la valeur nominale dépasse une mesure prédéterminée dans une certaine direction sont soumis à un post-usinage au moyen du faisceau laser (16).
  2. Procédé selon la revendication 1, caractérisé en ce que la totalité des éléments de structure (50, 56, 62) de la structure générée sont mesurés, en ce que, pour la totalité des éléments de structure mesurés (50, 56, 62) une comparaison quantitative de la valeur de mesure avec la valeur nominale est effectuée et en ce que la totalité des éléments de structure (50, 56, 62) pour lesquels l'écart entre la valeur de mesure et la valeur nominale dépasse la mesure prédéterminée sont soumis à un post-usinage.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que, lors du post-usinage d'un élément de structure (50, 56, 62), du matériau est enlevé au moyen du faisceau laser (16), dans lequel la mesure de la quantité de matériau enlevé correspond approximativement à la mesure de l'écart entre la valeur de mesure et la valeur nominale.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la mesure des structures s'effectue pendant l'usinage du cylindre (12) au moyen du faisceau laser (16).
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la valeur de mesure géométrique obtenue lors de la mesure est la distance radiale entre la surface (20) non usinée du cylindre et la surface de l'élément de structure (50, 56, 62).
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la mesure des éléments de structure (50, 56, 62) s'effectue par mesure d'une distance, dans lequel la distance entre un capteur (70) et la surface de l'élément de structure (50, 66, 62) est mesurée.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de structure (50, 56, 62) soumis à un post-usinage sont mesurés au moins une fois supplémentaire et sont de nouveau soumis à un post-usinage lorsque l'écart entre la valeur de mesure déterminée lors de la mesure supplémentaire et la valeur nominale dépasse la mesure prédéfinie.
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'usinage de la surface du cylindre (20) et la mesure des éléments de structure (50, 56, 62), ainsi que le post-usinage des éléments de structure (50, 56, 62) s'effectuent sous forme de pistes.
  9. Dispositif destiné à ménager des creux (22, 50) sur la surface (20) d'un cylindre (12), comportant un dispositif d'entraînement destiné à mettre en rotation le cylindre (12), au moins un laser (34), un organe d'usinage au laser (18) mobile par rapport au cylindre (12) pour exposer la surface du cylindre (20) à un faisceau laser (16) généré par le laser (34), des dispositifs de commande (42, 44) pour commander le mouvement de l'organe d'usinage au laser (18) et/ou du faisceau laser (16) par rapport au cylindre (12) et commander des dispositifs de modulation destinés à moduler le laser (34) ou le faisceau laser (16), au moins un capteur (70) mobile par rapport au cylindre (12) pour mesurer une structure générée par le faisceau laser (16) sur la surface du cylindre (20), des dispositifs connectés au capteur (70) pour déterminer au moins une valeur de mesure géométrique d'éléments de structure individuels (50, 56, 62) de la structure et comparer la valeur de mesure à des valeurs nominales géométriques correspondantes des éléments de structure, dans lequel les dispositifs de commande (42, 44) commandent le mouvement de l'organe d'usinage au laser (18) et/ou du faisceau laser (16) et commandent les dispositifs de modulation en fonction des valeurs de mesure géométriques afin de soumettre à un post-usinage des éléments de structure (50, 56, 62) dont la valeur de mesure s'écarte de la valeur nominale au moyen du faisceau laser (16) lorsque l'écart dépasse une mesure prédéfinie.
  10. Dispositif selon la revendication 9, caractérisé en ce que le capteur (70) est un capteur fonctionnant sans contact.
  11. Dispositif selon la revendication 9 ou 10, caractérisé en ce que le capteur est un capteur de trajet laser.
  12. Dispositif selon la revendication 9 ou 10, caractérisé en ce que le capteur (70) est un capteur confocal ou un capteur confocal chromatique.
  13. Dispositif selon l'une quelconque des revendications 9 à 12, caractérisé en ce que le capteur (70) est disposé dans une direction d'avance de l'organe d'usinage au laser (18) et/ou dans une direction de rotation du cylindre (12) à une certaine distance à l'arrière de l'organe d'usinage au laser (18).
  14. Dispositif selon l'une quelconque des revendications 8 à 12, caractérisé en ce que l'organe d'usinage au laser (18) et le capteur sont mobiles en commun dans la direction axiale du cylindre (12).
  15. Dispositif selon l'une quelconque des revendications 8 à 12, caractérisé en ce que les dispositifs de commande (42, 44), lors du post-usinage, commandent un enlèvement de matériau au moyen du faisceau laser (16) de telle manière que la mesure de matériau enlevé corresponde approximativement à la mesure de l'écart entre la valeur de mesure et la valeur nominale.
EP12710024.6A 2011-03-09 2012-02-21 Procédé et dispositif d'usinage d'un cylindre, en particulier d'un cylindre d'impression ou d'estampage Active EP2683553B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011013412 2011-03-09
PCT/EP2012/000740 WO2012119704A1 (fr) 2011-03-09 2012-02-21 Procédé et dispositif d'usinage d'un cylindre, en particulier d'un cylindre d'impression ou d'estampage

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Publication Number Publication Date
EP2683553A1 EP2683553A1 (fr) 2014-01-15
EP2683553B1 true EP2683553B1 (fr) 2016-04-06

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EP12710024.6A Active EP2683553B1 (fr) 2011-03-09 2012-02-21 Procédé et dispositif d'usinage d'un cylindre, en particulier d'un cylindre d'impression ou d'estampage

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EP (1) EP2683553B1 (fr)
WO (1) WO2012119704A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL106406A (en) 1993-07-20 1997-03-18 Scitex Corp Ltd And Advanced V Automatic inspection of printing plates or cylinders
DE19840926B4 (de) 1998-09-08 2013-07-11 Hell Gravure Systems Gmbh & Co. Kg Anordnung zur Materialbearbeitung mittels Laserstrahlen und deren Verwendung
DE502004004634D1 (de) 2004-02-27 2007-09-27 Hell Gravure Systems Gmbh & Co Verfahren zur direkten Gravur von Näpfchen zur Aufnahme von Druckfarbe für den Tiefdruck
EP1593493A1 (fr) * 2004-05-05 2005-11-09 Hell Gravure Systems GmbH Appareil pour la gravure de cellules en cylindres d'impression au moyen de lumiere laser

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WO2012119704A1 (fr) 2012-09-13

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