EP2371569A1 - Vorrichtung zur Halterung von Köpfen einer Digitaldruckmaschine für Keramikfliesen - Google Patents

Vorrichtung zur Halterung von Köpfen einer Digitaldruckmaschine für Keramikfliesen Download PDF

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Publication number
EP2371569A1
EP2371569A1 EP11160137A EP11160137A EP2371569A1 EP 2371569 A1 EP2371569 A1 EP 2371569A1 EP 11160137 A EP11160137 A EP 11160137A EP 11160137 A EP11160137 A EP 11160137A EP 2371569 A1 EP2371569 A1 EP 2371569A1
Authority
EP
European Patent Office
Prior art keywords
fact
plate
openings
shaped element
duct
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.)
Granted
Application number
EP11160137A
Other languages
English (en)
French (fr)
Other versions
EP2371569B1 (de
Inventor
Valentino Bonetti
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.)
Intesa SpA
Original Assignee
Tecno System Srl
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 Tecno System Srl filed Critical Tecno System Srl
Publication of EP2371569A1 publication Critical patent/EP2371569A1/de
Application granted granted Critical
Publication of EP2371569B1 publication Critical patent/EP2371569B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/02—Framework
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/377—Cooling or ventilating arrangements

Definitions

  • the present invention relates to a device for supporting the heads of a machine for the digital printing of ceramic tiles.
  • the machines for the digital printing which are now offered on the market generally comprise a plurality of printing heads, each of which has a nozzle suitable for dispensing ink and an electronic part suitable for controlling the opening and closing of the relevant nozzle.
  • the machines for the digital printing of known type comprise a plate for supporting the printing heads.
  • Such plate has a plurality of through openings, equal in number to that of the heads, through which the relevant nozzles are inserted.
  • the supporting plate defines a first face in correspondence to which are arranged the relevant electronic parts of the printing heads and a second face from which the nozzles protrude.
  • the tiles arriving in proximity of the machine for the digital printing generally come from a heating machine, such as a oven or a drier, some condensation creates on the supporting plate due to the difference in temperature between the tile and the plate itself. Such condensation, which therefore generates on the second face of the supporting plate from which the nozzles of the printing heads protrude, can jeopardize the successful performance of the decoration.
  • a heating machine such as a oven or a drier
  • the supporting plates of known type are generally provided with a heating element arranged on their first face and suited to heat the plate itself.
  • the supporting plates of known type do not allow, in fact, bringing the enamel contained in the printing heads to the ideal work temperature.
  • the heating elements with which such plates are provided allow to supply heat at a constant temperature, and therefore do not allow to adjust themselves to the temperature changes of the external environment.
  • the external temperature of the printing heads can even be higher than the ideal work temperature, so it may be necessary to cool the supporting plate.
  • the positioning of the heating clement on the first face of the supporting plate causes the temperature on this face to be higher than that on the opposite face due to the thickness of the plate itself.
  • the main aim of the present invention is to provide a device for supporting the heads of a machine for the digital printing of ceramic tiles which permits to keep the enamel contained in the printing heads at a temperature which is as close as possible to the ideal work temperature.
  • One object of the present invention is therefore to allow an adjustment of the element temperature which supports the printing heads according to the specific needs.
  • Another object of the present invention is therefore to improve the reliability of the relative machine for digital printing, thus allowing a precise decoration and reducing production waste.
  • Yet another object of the present invention is to reduce greatly, with respect to the plates of known type, the formation of condensation on the element that supports the printing heads.
  • Not the last object of the present invention is to prevent the formation of areas with different temperature on the supporting device itself.
  • Another object of the present invention is to provide a device for supporting the heads of a machine for the digital printing of ceramic tiles that allows overcoming the mentioned drawbacks of the background art within the ambit of a simple, rational, easy to use and low cost solution.
  • the present device for supporting the heads of a machine for the digital printing of ceramic tiles, comprising a plate-shaped element having one or more openings for inserting corresponding heads for the digital printing and characterised by the fact that it comprises at least one duct for the flow of a heating/cooling fluid of said plate-shaped element.
  • the device 1 comprises at least a plate-shaped element 2 having one or more openings 3 intended to house the heads for the digital printing not shown in the figures and of type known to the expert in the field.
  • the plate-shaped element 2 defines a first face 2a, on which are intended to rest the electronic parts of the heads for the digital printing, and a second face 2b, opposite the first face 2a and from which the nozzles of the heads for digital printing protrude.
  • the device 1 comprises at least a duct 4 for the flow of a heating/cooling fluid of the plate-shaped element 2.
  • the duct 4 is arranged substantially around at least one part of each opening 3.
  • the plate-shaped element 2 comprises a plurality of openings 3 arranged in such a way as to form one or more rows 5 which extend along directions substantially parallel to one another and the duct 4 is shaped in such a way as to define a coil that passes at least alongside the openings 3 so arranged.
  • the rows 5 of openings 3 extend along a direction substantially parallel to at least one of the sides of the plate-shaped element 2.
  • the openings 3 which define each row 5 are aligned to one another along the extension direction of the row itself and are arranged parallel to the openings 3 of the other rows 5.
  • Alternative embodiments cannot however be ruled out which provide a different arrangement of the openings 3 along each row 5.
  • the arrangement and direction of the openings 3 and therefore of the relative rows 5 is not essential for the purpose of the present invention.
  • the openings 3 are arranged so as to define a plurality of groups 6 at a distance to one another and which extend along directions parallel to one another.
  • each group 6 comprises one or more rows 5 of openings 3 and the duct 4 is shaped in such a way as to pass between a group 6 of openings 3 and the adjacent group 6.
  • the openings 3 which make up the rows 5 of a same group 6 are staggered from one another along a direction substantially at right angles to that of extension of the rows themselves.
  • the plate-shaped element 2 also comprises a plurality of through slots 12 associable, in correspondence to the first face 2a, with suction means of the impurities present in proximity of the second face 2b.
  • the slots 12 are arranged in such a way as to form rows 13 substantially parallel to one another.
  • the slots 12 and rows 13 are arranged substantially parallel to the openings 3 and rows 5, respectively.
  • Alternative embodiments cannot however be ruled out in which the slots 12 and rows 13 have a different extension from that of the openings 3 and rows 5, respectively.
  • the openings 3 also the arrangement of the slots 12 and therefore of the relative rows 13 is not essential for the purpose of the present invention.
  • the duct 4 is defined at least in part in the plate-shaped element 2.
  • the duct 4 comprises a plurality of first sections 4a defined in the plate-shaped element 2 and at least a second section 4b, suitable for connecting two first sections 4a to one another, which is external to the plate-shaped element itself.
  • the first sections 4a extend substantially in a direction parallel to the rows 5 and are placed in between the groups 6.
  • the first sections 4a are placed in between each group 6 of openings 3 and each row 13 of slots 12 arranged laterally to the group 6. Between two groups 6 of openings 3 one alongside the other two first sections 4a are therefore placed in.
  • first sections 4a are defined by relative holes obtained in the plate-shaped element 2 and each having at least a closed extremity.
  • the holes which define the first sections 4a are placed in between the first and second face 2a and 2b.
  • me holes which define the first sections 4a are blind holes.
  • Each first section 4a has then at least one gap 7 which faces on the first face 2a of the plate-shaped element 2 for the connection to the relative second section 4b.
  • the second sections 4b are therefore made up of a relative connection element 8 which connects two gaps 7 defined on two respective first sections 4a separate to each other.
  • connection elements 8 extend along a direction substantially at right angles to that of the first sections 4a.
  • the duct 4 comprises at least an inlet mouth 9 and an outlet mouth 10 of the heating/cooling fluid which can be connected to heating/cooling means, e.g. a heat pump made up of Peltier cells, suited to vary the temperature of the fluid itself depending on the temperature outside the plate-shaped element 2.
  • heating/cooling means e.g. a heat pump made up of Peltier cells, suited to vary the temperature of the fluid itself depending on the temperature outside the plate-shaped element 2.
  • the inlet mouth 9 and the outlet mouth 10 are defined by an open extremity of the hole which defines a relative first section 4a, while the open extremity of the other first sections 4a is closed by a cap or the like not visible in detail in the figures.
  • the device 1 comprises means for adjusting the temperature of the heating/cooling fluid which can be operatively connected to the heat pump. More in detail, according to the temperature outside the plate-shaped element 2, which can be detected by means of sensors or the like, and to the ideal work temperature of enamel to be applied on the tiles, the temperature adjustment means trigger on the heat pump to heat or cool the fluid flowing inside the duct 4 in such a way as to bring the temperature of the plate-shaped element 2 as close as possible to the ideal one.
  • the device 1 comprises means for the application of at least a protection element for the nozzles of the heads for the digital printing not shown in the figures.
  • the application means comprise at least a groove 11 defined on the second face 2b of the plate-shaped element 2 inside which at least one part of the protection element can be inserted sliding.
  • the protection element defines a protection surface facing the second face 2b and at a distance to it.
  • the application means comprise a plurality of grooves 11, which extend along a direction substantially parallel to the first sections 4a.
  • the grooves 11 are through grooves and extend between two opposite sides of the second face 2b.
  • the grooves 11 are arranged in correspondence to the first sections 4a and are therefore positioned between the groups 6 of openings 3.
  • the grooves 11 are shaped in such a way as to prevent the protection element from moving along a direction different from the insertion one, i.e. along a direction different from that of extension of the grooves themselves.
  • the grooves 11 are "T"-shaped, and therefore define locator stops against which rest respective counter-locator stops defined by the covering element.
  • the present invention therefore allows to obtain more precise decorations and with better quality with respect to the decorations with respect to the decorations obtained using the plates of known type.
  • the device according to the invention greatly reduces, with respect to the supporting plates of known type, the formation of condensation during the phase of digital decoration of the ceramic tiles.
  • the supporting device according to the invention also allows to make the temperature of the plate-shaped element substantially even, because the first sections of the fluid flowing channel placed in between the two faces of the plate-shaped element allow to keep the same temperature on both faces, thus avoiding the formation of temperature gradients on it.

Landscapes

  • Ink Jet (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
EP20110160137 2010-04-01 2011-03-29 Vorrichtung zur Halterung von Köpfen einer Digitaldruckmaschine für Keramikfliesen Not-in-force EP2371569B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMO2010A000096A IT1399126B1 (it) 2010-04-01 2010-04-01 Dispositivo per il supporto delle testine di una macchina per la stampa digitale di piastrelle ceramiche

Publications (2)

Publication Number Publication Date
EP2371569A1 true EP2371569A1 (de) 2011-10-05
EP2371569B1 EP2371569B1 (de) 2014-04-30

Family

ID=43416480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110160137 Not-in-force EP2371569B1 (de) 2010-04-01 2011-03-29 Vorrichtung zur Halterung von Köpfen einer Digitaldruckmaschine für Keramikfliesen

Country Status (3)

Country Link
EP (1) EP2371569B1 (de)
ES (1) ES2487640T3 (de)
IT (1) IT1399126B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016135545A1 (en) * 2015-02-27 2016-09-01 G.Tech S.R.L. Printing device and machine for printing ceramic tiles or slabs
WO2017011923A1 (en) * 2015-07-23 2017-01-26 Radex Ag Drop-on-demand inkjet print bar
DE102016123004A1 (de) * 2016-11-29 2018-05-30 Océ Holding B.V. Vorrichtung zum Kühlen einer Einheit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870622A1 (de) * 1997-04-07 1998-10-14 Xerox Corporation Tintenstrahldrucker mit einem verbesserten Kühlsystem
DE19743804A1 (de) * 1997-10-02 1999-04-08 Politrust Ag Druckvorrichtung
US20080273910A1 (en) * 2005-05-30 2008-11-06 Agfa Graphics Nv Print Head Shuttle with Active Cooling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870622A1 (de) * 1997-04-07 1998-10-14 Xerox Corporation Tintenstrahldrucker mit einem verbesserten Kühlsystem
DE19743804A1 (de) * 1997-10-02 1999-04-08 Politrust Ag Druckvorrichtung
US20080273910A1 (en) * 2005-05-30 2008-11-06 Agfa Graphics Nv Print Head Shuttle with Active Cooling

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016135545A1 (en) * 2015-02-27 2016-09-01 G.Tech S.R.L. Printing device and machine for printing ceramic tiles or slabs
WO2017011923A1 (en) * 2015-07-23 2017-01-26 Radex Ag Drop-on-demand inkjet print bar
CN107921778A (zh) * 2015-07-23 2018-04-17 默威股份公司 按需滴定的喷墨打印杆
US10457060B2 (en) 2015-07-23 2019-10-29 Mouvent Ag Drop-on-demand inkjet print bar
CN107921778B (zh) * 2015-07-23 2020-08-21 默威股份公司 按需滴定的喷墨打印杆
DE102016123004A1 (de) * 2016-11-29 2018-05-30 Océ Holding B.V. Vorrichtung zum Kühlen einer Einheit
DE102016123004B4 (de) * 2016-11-29 2021-02-04 Canon Production Printing Holding B.V. Vorrichtung zum Kühlen einer Einheit

Also Published As

Publication number Publication date
IT1399126B1 (it) 2013-04-05
EP2371569B1 (de) 2014-04-30
ES2487640T3 (es) 2014-08-22
ITMO20100096A1 (it) 2011-10-02

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