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EP2620289A2 - Dispositif et procédé destinés à appliquer des goutes de liquide - Google Patents

Dispositif et procédé destinés à appliquer des goutes de liquide Download PDF

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Publication number
EP2620289A2
EP2620289A2 EP13165542.5A EP13165542A EP2620289A2 EP 2620289 A2 EP2620289 A2 EP 2620289A2 EP 13165542 A EP13165542 A EP 13165542A EP 2620289 A2 EP2620289 A2 EP 2620289A2
Authority
EP
European Patent Office
Prior art keywords
dimensional structure
motif
detector
application
coding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13165542.5A
Other languages
German (de)
English (en)
Other versions
EP2620289A3 (fr
Inventor
Thomas Stoll
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.)
Durst Austria GmbH
Original Assignee
Durst Phototechnik Digital Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Durst Phototechnik Digital Technology GmbH filed Critical Durst Phototechnik Digital Technology GmbH
Publication of EP2620289A2 publication Critical patent/EP2620289A2/fr
Publication of EP2620289A3 publication Critical patent/EP2620289A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/001—Applying decorations on shaped articles, e.g. by painting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/007—Digital printing on surfaces other than ordinary paper on glass, ceramic, tiles, concrete, stones, etc.
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0082—Digital printing on bodies of particular shapes
    • B41M5/0088—Digital printing on bodies of particular shapes by ink-jet printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2203/00—Embodiments of or processes related to the control of the printing process
    • B41J2203/01—Inspecting a printed medium or a medium to be printed using a sensing device
    • B41J2203/011—Inspecting the shape or condition, e.g. wrinkled or warped, of a medium to be printed before printing on it

Definitions

  • the invention relates to an apparatus and a method for applying fluid drops to form a motif on at least a part of an object provided at least partially with a three-dimensional structure according to the preamble of claims 1, 2 or 3 and 35 and 36.
  • a corresponding to the preamble of claim 1 apparatus for multicolor printing on building materials with irregular surface, such as wall cladding elements, is in the Japanese patent application JP 09-323434 described.
  • the component to be printed is first provided with a rough-surface coating to be subsequently conveyed to a position with a plurality of (continuous-ink-jet) ink-jet printheads, followed by printing of the motif with a low-viscosity ink containing a has a resistivity of less than 10 4 .
  • this document provides no evidence of targeted printing on existing relief on the component, this font is not removable, as the selection of the motif to be printed should be made.
  • a decoration is in DE 600 09 141 T2 described.
  • a previously selected decor is to be applied to surface elements such that the decorative patterns of juxtaposed surface elements are coordinated.
  • This can be, for example, a wood grain extending over several surface elements installed next to one another.
  • a suitability of this device for printing, for example marble reliefs on a three-dimensionally structured object is not apparent from this document.
  • the US 7,357,959 B2 a device for printing three-dimensional objects with an inkjet printer. It is envisaged that the distance between the color spray nozzles and the pressure base is adjustable.
  • the printing device therefore comprises an at least two-dimensionally pivotable print head.
  • the objects to be printed are placed on a conveyor belt and are moved past the print head. Sensors are provided to detect the position of the leading edge of the object to be printed, the side edges, and the height of the panel to be printed. Since the entire outer contour of the object to be printed is detected, it is ensured that no color gets on the conveyor belt, but that the edge sections of the object to be printed are printed correctly. If the geometry of the object to be printed is known and the object is arranged in a certain relative position to the conveyor belt, it is only necessary to detect the leading edge in order to print the entire object correctly.
  • a printing apparatus for printing on a pipe which pipe is unwound from a roll, wherein characteristics concerning the pipe are present on the roll.
  • a sensor is provided which reads the encoded information from the reel and generates a signal therefrom to drive a microprocessor controlling the printer accordingly.
  • the document D2 further discloses that a thermal printer is used as the printer.
  • the print head is arranged on a support structure, which is pivotable about at least one, preferably about at least two axes of rotation.
  • the present invention has for its object to provide an apparatus and a method for printing three-dimensionally structured objects, which reliably ensures a high-quality and precise print motif at the highest possible printing speed.
  • the object is achieved in a device of the type mentioned above in that the control device of the image data storage device or the application device associated detector device for detecting at least a part of the three-dimensional Having structure of the object, and controls the application of the fluid drops on the object according to the motif in dependence on the detected three-dimensional structure.
  • the control device of the image data storage device or the application device associated detector device for detecting at least a part of the three-dimensional Having structure of the object, and controls the application of the fluid drops on the object according to the motif in dependence on the detected three-dimensional structure.
  • the invention provides a structure recognition method to be carried out before coloring, which precisely picks up the contour relief of the object to be decorated, for example a tile, and forwards it to the image reproduction system so that the correct image can be printed accurately on the tile.
  • the invention can be solved independently but also in a device of the type mentioned above in that the control device of the image data storage device or the application device associated detector device for inputting one, at least part of the three-dimensional structure of the object and / or the alignment thereof in at least two
  • the input device controls the application device for applying the fluid drops to the object in accordance with the predeterminable motif in dependence on the three-dimensional structure, based on the input signal.
  • a further independent solution of the problem by a device in the aforementioned type is characterized in that the control device has a detector device associated with the image storage devices or the application device for scanning or reading at least part of a coding and generates an input signal characterizing the three-dimensional structure of the object and the controller controls, based on the input signal, the application of the fluid drops to the object for producing the motif depending on the three-dimensional structure and / or the orientation thereof.
  • a special coding is provided on the object, with this object immediately the right motif for applying to a three-dimensional structure or the surface of the object can be selected.
  • the advantage here is that only small amounts of data must be processed in order to uniquely identify the object and the object associated with this object is required. Thus, the production speed of such devices can be additionally increased.
  • the coding is arranged in addition to the three-dimensional structure of the object, since thereby the applied coding can also be used for subsequent operations or logistics.
  • the coding is arranged in a region of the surface of the object which is distanced from the three-dimensional structure of the object.
  • the coding of the object has a three-dimensional structure. This is especially true for those objects that are made for example by a pressing or casting process, for example, by an injection molding or die casting process.
  • the processing of the objects is surprisingly considerably simplified if the coding contains a position information characterizing the position of the three-dimensional structure on the object.
  • the coding contains a position information characterizing the position of the three-dimensional structure on the object.
  • Exact detection of the structure of the object at high speed enables a high production speed and can be achieved if the detector device associated with the image data storage device or the application or dispensing device has a high-resolution camera for detecting at least part of the three-dimensional structure of the object which outputs the data of the measured three-dimensional structure to the image data storage device.
  • a high-resolution camera for detecting at least a part of the three-dimensional structure of the coding of the object which is obtainable in a detector device assigned to the control or image data storage device and / or application or dispensing device detects the three-dimensional structure and the orientation of the coding or their three-dimensional structure in relation to a desired orientation and outputs to the control device.
  • the high-resolution camera records the three-dimensional structure of the object or the coding by a relative movement between a line camera and the three-dimensional structure or if the recording of the three-dimensional structure of the object or the coding takes place in synchronism with the feed rate of the receiving device receiving the object.
  • the last-mentioned embodiment variant has the advantage that the recognition of the structure or the coding in the continuous pass can occur upstream of the production process, that is to say in the application of the motif.
  • the supply device is associated with a sensor device for detecting the supply speed of the three-dimensionally structured object, which may have an incremental encoder.
  • a further embodiment variant which makes possible an improved recognition of the structure or coding can be achieved if the sensor device for detecting the feed speed has an incremental encoder and / or the detector device associated with the image data storage device or the application and / or dispensing device is an optical reading device for Example, a bar code sensor which detects a applied to the object predetermined text and / or character encoding and preferably the optical reader or the bar code sensor is associated with a lighting.
  • the detector device has a three-dimensional structure optoelectronically detecting CCD matrix and connected to an optoelectronic scanning device evaluation, for example, a Ausretemikrocontroller and / or the detector device comprises an optical measuring device which at least part of the surface geometry and / or the height relief of the three-dimensionally structured object is detected by triangulation of light beams and / or the three-dimensionally structured object is provided with a predetermined coding which is detected by the detector device and evaluated by the control device and / or the coding e a geometric image code having predetermined geometric and optionally structured picture elements, which corresponds to a stored in the image data storage device motif, as this misallocation of subjects to objects can be turned off with high security.
  • the picture elements preferably have at least one polygon of a centering and / or direction marking, with a varying number of lying within this polygon, at a certain angle to a side edge arranged code lines and, for example, the angle ⁇ within the polygon arranged code lines is in the range of 20 ° to 70 °, and preferably 45 °.
  • the object of the invention can also be achieved by a method according to the preambles of claims 35 and 36, in which the object provided with a three-dimensional structure is guided past a detector device or sensor device associated with the control device, wherein the three-dimensional object is detected by detecting at least one Part of the surface geometry and / or the structure is classified by the detector device and based on the classification carried out a motif stored in the image data storage device is assigned to the respective three-dimensional object, and the object is supplied to the application device, where application of the fluid drops takes place according to the subject or the control device has a signal input device assigned to the image data storage device or the application device for inputting at least one input signal characterizing part of the structure of the object which control device controls the printing of the object with the motif as a function of the structure or the height relief on the basis of the input signal.
  • These methods allow a targeted, rapid processing of the individual objects while avoiding waste or a considerable reduction of the Committee. Further advantageous measures are described in the further method claims.
  • FIG. 1 and 2 illustrated embodiment of the invention comprises a device 1, with a motif 3 can be applied to a surface of an object 2.
  • the device 1 for generating the motif 3 has a dispenser 4, by means of which a motif, such as a wood grain, a stone grain, an ornament or any graphic elements or ornaments is applied to at least a part 5 of a surface 6 of the object 2.
  • the object 2 can be formed by an MDF board, melamine board, a glass component, plywood, veneer, ceramics, greenware, tile, plastic board, cardboard or the like.
  • the object 2 is placed on a single or multi-axis positioning device 7 or a feeding device 8, e.g. a double belt conveyor, abandoned.
  • This positioning device 7 may e.g. in the ceramic industry for transporting, for example, ceramic greenware called greenware before being fed to the firing process or used by already fired ceramic tiles.
  • the double belt conveyor 8 has two belts extending in the direction of transport - arrow 9 - which are driven by a motor 10, e.g. an asynchronous motor can be driven, which can be controlled for example via a frequency converter.
  • a control device 11 is arranged, which may also comprise an integrated image data processing or / and recognition device 12 for a motif 3, which is integrated or connected to it, for example via a bus system.
  • the dispensing device 4 for applying the motif 3 by dispensing fluid drops 14, 15 is arranged by a fluid mixed with inorganic particles and / or pigments.
  • This Dispensing device 4 may be arranged downstream of another dispensing device 4 in the conveying direction - arrow 9.
  • This subordinate dispensing device 4 is also equipped with a dispensing device 16, which is preferably, however, and with these dispensing devices 4 drops 14, 15 can also be dispensed from a fluid mixed with inorganic particles and / or pigments.
  • the pigments can be different and in each case according to the desired colors such as white, cyan, magenta, etc., so that single or multi-colored drops for producing a single or multi-colored image or motif 3 can be delivered.
  • the object 2 is supplied by means of the feed device 13 to the dispensing devices 4 or passed under them.
  • the object 2 can be fixed in the two spatial directions 17, 18 parallel to the plane running through the support surface of the straps or straps, or also moved with appropriate design of the positioning device 7. Notably, the movement takes place in the feed direction - arrow 9 - and is thereby moved through the object 2 positioned below the dispensers 4.
  • the individual drops of fluid 14, 15 are provided with pigments and / or particles before application of the motif Fluids to select for the application of the fluid drops 14, 15 on the surface 6 of the object 2 required pressure data for the dispenser 4 from the image data processing and detection device 12 and an image data storage.
  • the dispensing device 4 is preceded by a detector device 19 or a sensor device 20.
  • This coding 21 may be arranged on the surface 6 of the object 2, for example, facing away from a support surface 22 of the positioning device 7 top 23 or the support surface 22 facing bottom 24 and, for example, as shown in FIG Fig. 3 be educated.
  • the coding 21 is arranged, for example, on the upper side 23 or the lower side 24 or side surfaces, the detector device 19 can be arranged at one or more locations along the positioning device 7 or the feed device 13. Especially if at least part of a three-dimensional structure 25 or the height relief of the object 2 and additionally applied codings 21 are to be read out or scanned or scanned with the detector device 19, separate own detector devices 19 and / or sensor devices 20 in different technical Designs that are best suited to the purpose are used.
  • control device 11 has a detector device 19 assigned to the image data processing and / or recognition device 12 or the dispensing device 4 for detecting at least part of the structure 25 or the height relief of the object 2, which prints the object 2 with the motif 3 depending on the structure 25 and the height relief controls.
  • the dispenser 4 may be, for example, an inkjet printing device for industrial applications with multiple printheads for dispensing drops 14, 15 of a fluid.
  • the to be printed Objects 2, for example the tiles or the not yet fired ceramic parts, can be continuously guided past the dispensing device 4.
  • control device 11 and the image data processing and / or recognition device 12 are connected via control lines 26 to the dispensing devices 4 and the motor 10 of the positioning device 7 or the double belt conveyor 8, the application devices 4 and their dispensing devices 16 and the detector devices 19 and 19, respectively.
  • Sensor devices 20 connected via control lines 26.
  • control lines 26 may be formed separately for each device in each of the described embodiments, but it is of course also possible to connect a bus system between the control device 11 and the other devices, in particular the positioning device 7 or motor 11 of Schmelf kaus- and / or Detection device 12 and dispensing devices 16 and application devices 4 the detector devices 19 and the sensor devices 20, 27 provide.
  • bus system and the corresponding bus controllers, a variety of known from the prior art devices and systems can be used.
  • the control device 11 also controls and monitors the supply of the objects to be printed 2, which are transported, for example, in the ceramic industry by means of a conventional belt belt drive system. This can be aligned with +/- 0.5 mm accuracy relative to the application devices 4.
  • the drive is preferably an asynchronous motor, whose control can be done via a frequency converter, which in turn are connected to the control device 11 via control lines 26.
  • the belt speed, and thus also the feed speed of the objects 2 is determined with a sensor device 27, for example an incremental encoder.
  • a sensor device 27 for example an incremental encoder.
  • the transport speed of the objects 2, such as the feed rate or the reactive speed between the dispensers 16 and the objects 2, must be taken into account for the accuracy of the scanning of the motif 3 or the coding 21 by means of the detector device 19 or sensor device or the accuracy of this scan ,
  • a speed measuring device for example the sensor device 20, with which the structure present on the surface of the objects 2 for the exact determination of the forward movement or the relative movement between the Object 2 and the dispensers 16 preferably at different locations, for example, monitored directly in the area of the dispenser 16 for the fluid droplets 14, 15 on the surface of the object 2, in particular semi or fully automatically controlled.
  • a laser measuring device which exploits the unevenness or a three-dimensional structure 25 on the surface of the object 2 for determining the speed of the object 2 is suitable.
  • the accuracy of the speed measurement is advantageously less than 1% relative to the rated speed or relative speed between the object 2 and the dispensing devices 16.
  • the sensor device 27 also supplies the measuring signal via control lines 26 to the control device 11.
  • Z-axis a spatial direction 29
  • the object 2 in particular when it comes to tiles or green compacts, aligned on the positioning device 7 or the support surface 22 with an accuracy of +/- 1mm in at least one of the two spatial directions 18, 28 and is positioned.
  • the detector device 19 For determining and determining or assigning the correct to be applied with the dispensers 16 Motives 3 on the surface 6 of the object 2 and preferably especially for adapting the applied motif to the actual height relief 25 of the object 2, it is now advantageously possible with the detector device 19 to scan the entire height relief 25 on the surface 6 of the object 2 or to capture, which is then to be printed with the adapted to this height relief 25 motif 3.
  • a high-resolution camera for example, can be used for this purpose. With this camera or a corresponding laser scanning device, the complete surface of the object 2 can be measured under continuous or intermittent passage of the object 2 under the detector device 19.
  • the corresponding data can be forwarded to the control device 11 and / or to the image data processing and / or recognition device 12. Of course, it is also possible to transfer these data in a separate computer via these devices, which calculates the corresponding exact height relief from these received data of the detector device 19 and thus provides the control data for the subsequent operations available.
  • the height relief 25 is determined synchronously to the conveying speed of the object 2 or to the relative speed between the object 2 and the detector device 19.
  • the height relief 25 is composed of the recorded lines of the control device 11 and the image data processing and / or recognition device 12, respectively.
  • the motif 3 or print motif corresponding to this height relief 25 is retrieved from an image database stored in the control device 11 or the image data processing and / or recognition device 12 or another computer associated therewith, and the control device 11 for controlling the dispensing devices 4 to hand over.
  • the respective dispensing device 16 is actuated by the control device 11 to deliver the corresponding fluid droplets 14 and 15 by fluids added with more preferably different pigments or particles in order to apply the motif 3, as is known, for example, in the known from industrial applications inkjet printing devices to produce.
  • these data can also be used to determine the orientation of the three-dimensional structure 25 of the object 2 relative to a predefinable desired position and depending on the position the three-dimensional structure 25 and the height relief and thus of the object 2 generate some corresponding input signals for the control device 11.
  • tactile scanning methods such as the stylus method can be used, so for example a profilometer can be used.
  • control device 11 With these input signals, it is now possible for the control device 11 to control the application device 4 or its dispensing devices 16 in such a way that, even if the position of the object 2 is not exactly aligned, for example with one of its longitudinal axes not parallel to the conveying direction - arrow 9 - the motif 3 in FIG desired orientation relative to the three-dimensional structure 25 and the height relief is applied.
  • Such an approach can increase the speed of application of the motif 3 and, for example, it is also possible to save separate guiding devices for the objects 2 or alignment devices such as positioning axes or robots for exact alignment of the position of the object 2 on the positioning device 7 or the feeding device 13.
  • the control device 11 therefore receives from its associated image data storage device 30 for the application device 4, the data associated therewith the required data based on the signals from the detector device 19, the at least part of the three-dimensional structure 25 and the height relief of the object 2 and / or the orientation of the object 2 in at least two different spatial directions 17, 18 is determined or scanned, set or selected or calculated.
  • the detector device 19 generates the structure 25 and the actual alignment of the structure 25 or of the object 2 relative to a desired position characterizing input signals.
  • control device 11 On the basis of these input signals, it is thus possible for the control device 11 to actuate an alignment of the objects 2 in a desired desired position with corresponding actuating means and / or the application device 4 or its dispensing devices 16 for applying the fluid drops 14, 15 to the object 2 in accordance with the preselectable motif 3 selected on the basis of the determination of the three-dimensional structure 25 and, if appropriate, the position of the object 2.
  • tile presses on the market today that can press several tiles, preferably 6 or 12 tiles at the same time, many different structures can be expected in a single production process.
  • the coding 21 can be configured as desired or have the most varied forms.
  • a bar code or bar code known from the prior art for example also a three-dimensional bar code for coding the individual objects 2, so that the correct motifs 3 can be assigned to them fully automatically.
  • this bar code can be applied at any point of the object, for example, those areas on which the motif 3 is then applied.
  • the coding 21 on the underside 24 of the object 2 or the side surfaces connecting the top and bottom sides is preferably arranged.
  • the bar code or the coding 21 is invisible under daylight or normally used artificial light.
  • Such encoding 21 can therefore be arranged without further in the range of the viewer for the intended use facing visible side of the object 2, so that later with special light such as infrared or UV light or with another wave-optical method this encoding 21st can read. This is particularly advantageous if several individual objects 2 are combined to form a large overall motif and one of these objects 2 is damaged or breaks, so that the correspondingly correct object 2 can be accurately reproduced.
  • Electronic components that do not require their own energy source such as microchips or so-called RFID can also be embedded in the object 2 or arranged on the normal use of the non-visible to the viewer parts of the surface.
  • Fig. 3 it is also possible for objects 2, for example those which are produced by corresponding methods such as pressing, injection molding, embossing or the like, to arrange a three-dimensional coding 21.
  • objects 2 for example those which are produced by corresponding methods such as pressing, injection molding, embossing or the like, to arrange a three-dimensional coding 21.
  • This is recommended, inter alia, in the production of green compacts in the ceramics industry, since there often the components through a pressing process can be produced and in the course of this pressing process at a suitable location, the coding 21 as an identifying feature for the object 2 and the applied thereon height relief 25 can be pressed or stamped or formed.
  • Such a detector device 19 which is designed, for example, as a laser measuring device, is suitable, above all, for the scanning of codes 21, as used, for example, in US Pat Fig. 3 and 9 are shown.
  • the detector device 19 formed by the laser measuring device takes - as in FIG Fig. 2 shown - in the bottom of the ceramic part or green body or the tile or on the bottom 24 of the object 2 applied or pressed surface coding 21.
  • the object 2 provided with the coding 21 or the green body or the tile is used for scanning, for example, in FIG Fig. 3 illustrated coding 21 which may be arranged on the underside 24 of the object 2 is guided past the detector device 19, which scans from below the structure of the coding 21 synchronously to the speed of movement of the object 2.
  • the motif 3 corresponding to the coding 21 - which is unmistakably associated with the three-dimensional structure 25 or the height relief of the object 2 - is retrieved from the image data processing and / or recognition device 12 and / or an image data memory 30 and transferred to the dispensers 19 for processing, and Finally, a printing with the respective motif 3 takes place.
  • the coding 21 may have, for example, code lines 31 which, in accordance with their spacing and / or their thickness, allow a distinctive identification of the object 2 or of the structure 25 arranged thereon or the height relief of the object 2, similar to a one-dimensional or multidimensional barcode.
  • the front end face 39 thus forms the one with which the object 2 first enters the region of the application device 4.
  • this coding 21 can now be constructed in such a way that a center 41 of the centering mark 32 formed by a square 42 is arranged at the intersection of diagonals 40 of the object 2 shown in dotted lines.
  • This centering mark 32 consists of a square with side edges 43-46 of which the side edges 44 and 46 are aligned parallel to a longitudinal center axis 47 extending through the center 41 and are each spaced by the same distance y from this longitudinal central axis 47.
  • the perpendicular to these side edges 44 and 46 extending side edges 43 and 45 are in turn arranged at the same distance x from a transverse central axis 48 of the object 2. Which in turn passes through the center 41.
  • the longitudinal center axis 47 and the Transverse central axis 48 are each arranged at the same distance b or a from the side edges 35, 37 and 36, 38 of the object 2.
  • the code lines 31 which are, for example, at an angle ⁇ at 45 ° inclined to the central longitudinal axis 47 aligned. These code lines 31 or their number and optionally thickness form a code marking, for example in the sense of a bar code, wherein the course of these code lines 31 obliquely to the side edges 43 to 46 of the Zentriansmark réelle 32 allows a precise detection and discrimination of the same in a simple manner.
  • this centering marker 32 is scanned with the detector or sensor device 19, 20, both the position of the center 41 of the object 2 and the type of the object 2 and thus the object 2 belonging to this motif 3 can be determined, so that the right thing to the object 2 associated motif from the image data processing and / or - recognition device 12 and the image memory 30 for controlling the application device 4 can be selected or determined.
  • the object 2 is a square component or a rectangular one in which it is ensured by mechanical guide directions that it can only be supplied with one of the side edges 35 or 37 as end face 39 of the application device 4, the execution of the coding 21 be completely sufficient as described above.
  • the direction marking 33 is aligned such that side edges 51 and 52 are located at the same small distance 55 from the side edges 46 and 45 of the centering mark 32.
  • the direction mark 33 formed by a square is arranged offset relative to the code mark 32, the center of this direction marking 33 formed by the square being offset in the direction of the side edge 36 of the object 2 in the present exemplary embodiment.
  • the further direction marking 34 which is likewise formed by a square, is now offset relative to the center of the direction marking 33 in which the sides running parallel to the side edges 52 and 53 of the direction marking 33 are again arranged at the small distance 55 by the direction marking 34 whereas the side edges of the direction marking 34, which extend parallel to the side edges 51 and 54, again have a greater distance therefrom than the distance 55.
  • the coding 21 can be produced on the underside of the object 2 with a press die which has incorporated this structure in the stamp base.
  • a press die which has incorporated this structure in the stamp base.
  • all possible tile sizes can be processed, but the minimum size of the tile 60 mm x 60 mm got to.
  • a structure of 1 mm height difference can be resolved with a measurement signal of 1 V with sufficient accuracy.
  • the sampling frequency of the detector or sensor device 19, 20 is preferably greater than 2 kHz.
  • the Sensor measuring range is between 5 and 15, for example, 10 mm, the contour scanning accuracy is 0.0 to 0.2, preferably 0.1 microns.
  • This application variant of the coding is almost independent of the reflectance of the surface of the object 2.
  • the stamp structure tolerance is 5% of the default values, this can be realized with presses especially tile presses according to the current state of the art.
  • the illustrated dispensing or application devices 16, 4 may be formed as a single-pass system, in which the dispensing devices 16 are arranged fixed.
  • the application device 4 can also be designed for the scanning application of fluid droplets 14, 15, so that with a plurality of dispensers 16 different colors, and optionally the color WHITE and / or transparent and / or protective layers can be applied, but with the dispenser or dispensers 16 resp Printheads extend over only a portion of the width of the object to be printed 2 and in each case the color strip is applied during a movement transverse to the longitudinal direction of the object to be printed 2, and the object to be printed 2 after each cross feed of the application device 4 over its width with the supply device 13 by a presettable amount in the conveying direction - arrow 9 in FIG Fig. 2 - is moved forward intermittently.
  • a dispensing device 16 in which the ink drops 14, 15 are deflected after emerging from this by an electromagnetic field so that they impinge on the correct location of the object to be printed 2.
  • the object 2 to be printed may be different materials, for example film-like materials made of paper, plastic, metal, textile, wood and the like, or nonwovens, nets and the like, or it may also be plate-shaped material and band-shaped material of the aforementioned materials be printed.
  • ceramics such as ceramic components as fired goods or as greenware, natural stones or other natural materials such Mats, nets, nonwovens or leather and other building materials such as plasterboard, plasterboard or the like to print.
  • These objects 2 can be formed from extruded wood masses, from ceramic masses (green bodies or fired), from very different materials such as metal, non-ferrous metals, plastics and the like.
  • different manufacturing methods for the objects 2 are conceivable, such as, for example, injection molding, extrusion, blow molding, deep drawing, casting, and also different machining methods, such as milling.
  • Contamination of the optics of the detector and / or sensor device 19, 20, 27 is counteracted by connecting a cleaning device upstream, so that a clear optics can be achieved with a blow-off attachment that uses filtered air.
  • a groove depth of 0.5 to 4 mm is preferably 1 mm and a groove width and / or a distance between the side edges 42 to 46 and 51 to 54 of the Zentri mecanicsmark ist 32 and the direction marker 33, 34 or to the direction marker 33rd , 34 parallel side edges of the direction marker 33, 34 1 to 5 mm, preferably 1.5 to 2.5 mm.
  • the Structural height tolerance should preferably be +/- 0.1 mm.
  • the spacing of the code lines 31 can be chosen arbitrarily, for example between 2 and 6 mm, preferably 4 mm. A tolerance of these code lines 31 should be between +/- 0.1 +/- 0.5 mm, preferably +/- 0.25 mm. Also, a variable structure line spacing is possible.
  • a centering accuracy of the object 2 relative to the coding 21, for example, from +/- 0.1 to 1 mm, preferably +/- 0.5 mm with respect to the Zentrianssmark ist 32 so to achieve the inner square.
  • Fig. 4 shows a schematic representation of a part of the control device 11 and the image data storage processing and recognition device 12 of an exemplary device 1 for printing objects 2 as shown for example in FIG Fig. 1, 2 and 6 is shown.
  • the evaluation electronics belonging to the control device 11 comprise an evaluation microcontroller 56 with an analog / digital converter, interface modules 57 for setting up a proprietary RS-485 interface, and an input for the pulses of the sensor device 27 or the incremental encoder for measuring the belt speed.
  • the evaluation microcontroller 56 samples the analog output signal of the CCD matrix 29 at a sampling rate greater than 2 kHz, preferably greater than 4 kHz.
  • the evaluation microcontroller 56 starts the structure evaluation by evaluating the path of the object 2 or the tile by means of an encoder signal. If this running distance is the same length as the code marking start area, then a structure start is assumed.
  • the subsequent edge slopes and running distances without signal jumps in the range of the valid edge slopes define the read coding 21. If the read coding 21 is in the valid code space, then the structure has been recognized correctly. Depending on the structure detected, the evaluation microcontroller 56 of the application device 4 communicates the read coding 21 via the interface modules 57. The application device 4 requests the correct motif 3 from the image data memory 30 based on the read encoding 21.
  • a printer controller 58 stores the codings 21 received from the detector device 19 in a ring memory and, after each image output, selectively requests the next motif 26 from the image data memory 30 for image processing. Image buffering of any desired eg 6 to 20 images is possible.
  • the distance between the detector device 19 and application device 4 is provided with a protective housing. This prevents objects 2 whose codes 21 have already been recognized from being taken off the conveyor belt and thus the required sequence is not adhered to, which would result in a system error.
  • Fig. 5 shows the interaction of the sensor device 27 and the CCD matrix 29 with the control device 11 for an exact monitoring of the position of the object 2 between the CCD matrix 29 and the application device 4.
  • the transit time of the object 2 under the CCD matrix 29 is detected continuously.
  • the reading accuracy of the coding 21 can be increased by the CCD matrix 29. This is especially true if the supply speed or the relative speed between application device 4 and object 2 is not monitored separately with a sensor device 20.
  • the Fig. 6 1 shows a representation of an exemplary embodiment of an encoding 21 formed by a text and / or character coding 59 on an object 2.
  • the text and / or character coding 59 is a barcode (EAN-8 industrial standard format) which is assigned by a Sensor device 20, for example, a bar code scanner 60 is detected.
  • the bar code scanner 60 delivers the signal to the control device 11 via a control line 26.
  • the coding 21 is located on a side surface 61 connecting the lower side 24 with the upper side 23 of the object 2.
  • the upper side 23 of the object 2 has a structure 25, ie a height relief ,
  • An exemplary (arrow) dispensing device 16 applies fluid drops 14 and / or 15 to the three-dimensional structure 25, ie the structured surface of the object 2.
  • This dispensing device 16 can be movable in one direction, for example transversely to the longitudinal central axis 47 of the object 2 In this case, the object 2 moves in the longitudinal direction - arrow 9 - under the dispensing or application device 16, 4 and thus ensures a line feed.
  • the dispensing or application device 16, 4 is movable in the direction of both axes and the object 2 remains immobile during the application process.
  • FIGS. 7 to 9 show a representation in plan, front and bottom view of an exemplary object 2 with coding 21 on the bottom 24 and on the three-dimensional structure 25 and the height relief 25 applied motif 3 on the top 23 of the object 2.
  • the coding 21 is during the production of the object 2 such as based on the Fig. 3 described by pressing.
  • the innermost centering mark 32 of the coding 21 is centered on the intersection of the diagonals 40 in the object 2.
  • REFERENCE NUMBERS 1 Apparatus for printing 38 side edge 2 object 39 front 3 motive 40 diagonal 4 applicator 5 part 41 Focus 42 square 6 surface 43 side edge 7 positioning 44 side edge 8th Twin belt conveyor 45 side edge 9 arrow 10 engine 46 side edge 47 Longitudinal central axis 11 control device 48 Transverse centerline 12 Image data processing and / or recognition device 49 page length 50 page length 13 feeding apparatus 14 fluid droplets 51 side edge 15 fluid droplets 52 side edge 53 side edge 16 dispensers 54 side edge 17 spatial direction 55 distance 18 spatial direction 19 detecting device 56 Ausncemicrocontroler 20 sensor device 57 Interface module 58 printer controller 21 encoding 59 Text and / or character encoding 22 bearing surface 60 barcode scanner 23 top 24 bottom 61 side surface 25 structure 26 control line 27 sensor device 28 spatial direction 29 CCD matrix 30 Image data storage 31 code line 32 center mark 33 direction mark 34 direction mark 35 side edge 36 side edge 37 side edge

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ink Jet (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
EP13165542.5A 2009-01-29 2010-01-28 Dispositif et procédé destinés à appliquer des goutes de liquide Withdrawn EP2620289A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0016109A AT507848B1 (de) 2009-01-29 2009-01-29 Vorrichtung und verfahren zum aufbringen von fluidtropfen
EP10000860.6A EP2213462B1 (fr) 2009-01-29 2010-01-28 Dispositif et procédé destinés à appliquer des goutes de liquide

Related Parent Applications (2)

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EP10000860.6 Division 2010-01-28
EP10000860.6A Division EP2213462B1 (fr) 2009-01-29 2010-01-28 Dispositif et procédé destinés à appliquer des goutes de liquide

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EP2620289A2 true EP2620289A2 (fr) 2013-07-31
EP2620289A3 EP2620289A3 (fr) 2018-04-18

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EP10000860.6A Active EP2213462B1 (fr) 2009-01-29 2010-01-28 Dispositif et procédé destinés à appliquer des goutes de liquide
EP13165542.5A Withdrawn EP2620289A3 (fr) 2009-01-29 2010-01-28 Dispositif et procédé destinés à appliquer des goutes de liquide

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EP10000860.6A Active EP2213462B1 (fr) 2009-01-29 2010-01-28 Dispositif et procédé destinés à appliquer des goutes de liquide

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AT (1) AT507848B1 (fr)
BR (1) BRPI1004127B1 (fr)
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CN103786455A (zh) * 2013-12-31 2014-05-14 丽鑫生技化妆品（上海）有限公司 一种在化妆品表面形成彩色图像的方法
WO2016055555A1 (fr) * 2014-10-10 2016-04-14 Arburg Gmbh + Co Kg Procédé de traitement de produits prefabriques et produits préfabriqués associés
WO2024064985A1 (fr) * 2022-09-27 2024-04-04 Inkatronic Gmbh Dispositif et procédé permettant l'impression d'objets

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AT511152A1 (de) * 2011-02-22 2012-09-15 Stainer Arno Holzelemente mit altholzdekor und verfahren zu deren herstellung
DE102012209305A1 (de) * 2012-06-01 2013-12-05 Krones Ag Verfahren und Vorrichtung zur Kontrolle bzw. Korrektur eines Direktdrucks auf Behältern mit reliefartiger Oberflächenkontur
US10350875B2 (en) * 2015-10-29 2019-07-16 Nike, Inc. Printing layer in response to substrate contour
US10357962B2 (en) * 2016-03-08 2019-07-23 Nike, Inc. Printing utilizing a virtual mask
ES2657898B1 (es) * 2016-09-07 2018-12-19 Kerajet S.A. Procedimiento y dispositivo para la fabricación aditiva de un objeto
CN108943348B (zh) * 2018-08-20 2024-06-04 佛山市赛普飞特科技有限公司 一种使用陶瓷粉料的数码打印设备
DE102018121557A1 (de) 2018-09-04 2020-03-05 ISP GmbH & Co. KG Verfahren zur verzerrungsfreien Beschichtung von Werkstücken mit bidirektional gekrümmten Oberflächen
DE102018121570A1 (de) * 2018-09-04 2020-03-05 ISP GmbH & Co. KG Verzerrungsfreie Beschichtung von Fahrzeug Interieur-Oberflächen
CN113211997B (zh) * 2021-04-21 2022-04-08 四川天邑康和通信股份有限公司 一种双并排蝶形引入光缆智能喷印生产工艺控制方法
DE102021113681A1 (de) * 2021-05-27 2022-12-01 Homag Gmbh Vorrichtung und Verfahren zum Veredeln eines Werkstücks
IT202200018333A1 (it) * 2022-09-08 2024-03-08 Sacmi Tech S P A Metodo e macchina di decorazione per la decorazione superficiale di un articolo ceramico

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JPH09323434A (ja) 1996-04-02 1997-12-16 Toray Ind Inc 建材のプリント装置及びプリントずみ建材の製造方法
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WO2016055555A1 (fr) * 2014-10-10 2016-04-14 Arburg Gmbh + Co Kg Procédé de traitement de produits prefabriques et produits préfabriqués associés
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WO2024064985A1 (fr) * 2022-09-27 2024-04-04 Inkatronic Gmbh Dispositif et procédé permettant l'impression d'objets

Also Published As

Publication number Publication date
AT507848A2 (de) 2010-08-15
ES2418487T3 (es) 2013-08-14
BRPI1004127A2 (pt) 2012-07-24
EP2213462B1 (fr) 2013-05-01
EP2213462A3 (fr) 2011-11-23
EP2620289A3 (fr) 2018-04-18
EP2213462A2 (fr) 2010-08-04
BRPI1004127B1 (pt) 2019-10-08
AT507848B1 (de) 2011-06-15

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