EP4169726A2 - Dispositif de nettoyage, machine à imprimer et procédé de nettoyage d'une machine à imprimer - Google Patents

Dispositif de nettoyage, machine à imprimer et procédé de nettoyage d'une machine à imprimer Download PDF

Info

Publication number
EP4169726A2
EP4169726A2 EP22189212.8A EP22189212A EP4169726A2 EP 4169726 A2 EP4169726 A2 EP 4169726A2 EP 22189212 A EP22189212 A EP 22189212A EP 4169726 A2 EP4169726 A2 EP 4169726A2
Authority
EP
European Patent Office
Prior art keywords
cleaning
fluid
boundary
point
print head
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.)
Pending
Application number
EP22189212.8A
Other languages
German (de)
English (en)
Other versions
EP4169726A3 (fr
Inventor
Joachim Keupp
Wolfgang Reder
Christian Arnold
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP4169726A2 publication Critical patent/EP4169726A2/fr
Publication of EP4169726A3 publication Critical patent/EP4169726A3/fr
Pending legal-status Critical Current

Links

Images

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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/1652—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head
    • B41J2/16532—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head by applying vacuum only
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/16552—Cleaning of print head nozzles using cleaning fluids
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J2025/008—Actions or mechanisms not otherwise provided for comprising a plurality of print heads placed around a drum

Definitions

  • the invention relates to a cleaning device according to the preamble of claim 1, or a printing machine according to the preamble of claim 10 and a method for cleaning a printing machine according to the preamble of claim 12.
  • Non-impact printing methods for example thermographic methods or in particular the inkjet method
  • a non-impact printing machine usually has at least one image-generating device, in particular at least one printing unit with preferably at least one print head, for example preferably an inkjet print head.
  • individual drops of a printing fluid are ejected from at least one volume of the print head as required and transferred to a printing material, resulting in a printed image on the printing material.
  • By individually controlling a large number of volumes of the print head different print images are generated, for example, which are, for example, individualized and/or personalized and/or are produced cost-effectively, for example, in particular in small editions.
  • Soiling occurs again and again in printing units, for example due to dried coating materials such as printing ink or ink or due to parts of a printing material such as paper fibers or due to dust or the like or due to mixtures of the substances mentioned.
  • nozzles of print heads can be narrowed or clogged, which can lead to incorrect application of coating agent.
  • Such contamination can have negative consequences both inside nozzles and on the outside nozzle surfaces of print heads.
  • Cleaning devices are used to clean the nozzle surface.
  • Two print heads arranged one behind the other in the transverse direction are spaced apart from one another, for example by a positioning gap. For example, contamination can settle in this positioning gap and lead to negative consequences in subsequent printing processes.
  • a printing machine is known, wherein a longitudinal direction of a fluid supply opening and/or a longitudinal direction of a fluid discharge and/or a longitudinal direction of a fluid suction is aligned parallel to the positioning gap in order to clean it.
  • the longitudinal extent of the fluid supply opening is smaller than the extent of the nozzle surface of the at least one print head in the direction of the longitudinal extent of the fluid supply opening.
  • the object of the invention is to provide a cleaning device, a printing press and a method for cleaning a printing press to accomplish.
  • a cleaning device is advantageously provided.
  • the cleaning device preferably has at least one cleaning element.
  • the at least one cleaning element preferably has at least one fluid supply with at least one outlet opening for cleaning fluid.
  • the at least one cleaning element preferably has at least one sliding surface.
  • the at least one sliding surface preferably has a greater extent in a cleaning direction than orthogonally to the cleaning direction.
  • a projection plane is preferably arranged orthogonally to the cleaning direction.
  • At least one point of the at least one fluid supply is preferably arranged in the projection plane further away from a plane spanned by a z-direction and a central axis of the at least one cleaning element than at least one boundary point of the at least one sliding surface with the shortest distance to the at least one plane spanned by the z-direction and the central axis.
  • this enables the at least one contact surface of a print head to be wetted vertically with cleaning agent.
  • a projection of the at least one fluid supply in a plane of projection preferably at least partially overlays a projection of the at least one sliding surface in the plane of projection.
  • the printing machine preferably has at least one nozzle bar with at least one print head.
  • the at least one print head preferably has at least one nozzle surface and at least one contact surface.
  • the printing machine preferably has the at least one cleaning device.
  • the at least one cleaning device is preferably designed to clean the at least one nozzle surface and the at least one contact surface.
  • a method for cleaning the printing press is provided.
  • the at least one print head of at least one nozzle bar of the printing press is preferably cleaned by the at least one cleaning device.
  • the at least one print head preferably has the at least one nozzle surface and the at least one contact surface.
  • the at least one cleaning device preferably ejects cleaning fluid by means of the at least one fluid supply of the at least one cleaning element.
  • the at least one contact surface is preferably wetted with cleaning fluid by the at least one fluid supply.
  • the cleaning device advantageously comprises at least one fluid inlet, preferably designed as a fluid inlet opening, and/or at least one first fluid outlet, preferably designed as a fluid outlet, and/or at least one second fluid outlet, preferably designed as a fluid suction.
  • the cleaning device advantageously comprises the at least one fluid supply opening and/or the at least one fluid discharge and/or the at least one fluid suction, the longitudinal direction of the fluid supply opening and/or the longitudinal direction of the fluid discharge and/or the longitudinal direction of the fluid suction being parallel to the respective positioning gap to be cleaned is positioned.
  • penetration of a cleaning agent into the positioning gap is ensured and/or cleaning of the respective positioning gap is possible.
  • an intensive cleaning of the positioning gap is thus possible.
  • the flow rate of fluid within the first fluid drain is maximized by its preferred design.
  • Cleaning of the at least one contact surface of the at least one print head is advantageously optimized.
  • two delimitation points of a delimitation of the at least one fluid suction have the greatest possible distance from one another, which has a minimum length that is greater than at least one delimitation of a relevant one Exit face of a printhead in question is in a direction oriented parallel to the minimum length of fluid suction.
  • the cleaning device comprises at least two cleaning elements.
  • the at least two cleaning elements of the cleaning device By connecting the at least two cleaning elements of the cleaning device, it is advantageously possible to clean multiple print heads of a nozzle bar, for example simultaneous cleaning of multiple print heads in different rows of print heads of a nozzle bar.
  • the cleaning element advantageously comprises at least one first ramp and/or at least one second ramp. This makes it easier to position the cleaning element on a print head and/or to move the cleaning element along the nozzle bar, for example during a cleaning process.
  • a feed device which is directed towards at least one positioning gap between at least two print heads arranged next to one another, makes it more difficult and/or prevents, for example, the penetration of printing fluid and/or dirt into the positioning gap and/or the depositing and/or settling of printing fluid and/or dirt in the relevant positioning gap.
  • This can, for example, support the cleaning of the relevant positioning gap in a cleaning process, for example by a cleaning device, and/or make it more difficult for printing fluid and/or dirt to deposit and/or settle out during a printing process.
  • the feed device preferably comprises at least one outlet opening, which has a larger maximum diameter than the extension of a relevant one Exit surface of the relevant print head in the direction of a shortest boundary of the respective exit surface.
  • the positioning gap in the area of the exit surface and additionally or alternatively in the area of at least one contact surface delimiting the respective exit surface is detected by a fluid ejected from the feed device.
  • a printing press preferably applies at least one printing fluid, also known as a coating medium, to at least one printing substrate 03 and/or is capable of applying the at least one printing fluid.
  • the printing press preferably has at least one printing assembly 01 and at least one printing material guide element 02 for guiding the at least one printing material 03.
  • at least one feeder is arranged upstream of the at least one printing unit 01 and at least one delivery is arranged downstream.
  • the at least one printing press at least one painting unit and/or at least one dryer and/or at least one punching unit.
  • the printing press preferably comprises at least one printing assembly 01 and at least one printing substrate guide element 02 for guiding at least one printing substrate 03.
  • the at least one printing assembly 01 which is embodied in particular as a non-impact printing assembly 01, preferably as an inkjet printing assembly 01, comprises at least one nozzle bar 04 at least one print head 08, preferably at least one inkjet print head 08.
  • the printing press preferably has at least one nozzle bar 04 with the at least one print head 08.
  • At least one printing material guide element 02 is preferably assigned to the relevant nozzle bar 04.
  • the at least one print head 08 has at least one exit surface 09, also known as the nozzle surface 09.
  • the at least one print head 08 preferably has at least one contact surface 11, preferably at least two contact surfaces 11.
  • the printing press is a machine that applies at least one printing fluid to at least one printing substrate 03 and/or is capable of applying it.
  • the at least one nozzle bar 04 preferably comprises at least two print heads 08, which are arranged next to one another, in particular adjacent to one another, preferably adjacent, in a y-direction and/or which extend in particular over the entire working width of printing unit 01.
  • the respective print heads 08 of a nozzle bar 04 are preferably arranged in at least one row in the y-direction.
  • the at least one nozzle bar 04 preferably extends over the entire working width of the printing assembly 01.
  • at least two print heads 08 of the nozzle bar 04 are arranged next to one another in a y-direction and/or are connected to one another in the y-direction via a fixed axis, for example Group of printheads 08 connected.
  • the at least one print head 08 preferably has at least one contact surface 11.
  • the at least one contact surface 11 is preferably designed as a spacer surface.
  • the at least one contact surface 11 is preferably configured in such a way that the at least one nozzle surface 09 is arranged to avoid unwanted contact with components or other bodies, for example when the at least one nozzle surface 09 is being cleaned.
  • the at least one spacing surface 11 preferably extends over an entire area of the at least one print head 08, preferably in the y direction. However, dimensions over only part of the extent of the at least one print head 08 are also possible.
  • the at least one contact surface 11 is preferably arranged in the x-direction before or after the at least one nozzle surface 09, more preferably directly adjoining the at least one nozzle surface 09.
  • the at least one contact surface 11 is preferably arranged in the y-direction next to the at least one nozzle surface 09, preferably arranged adjacent to it.
  • the at least one print head 08 preferably has at least two contact surfaces 11. At least one contact surface 11 of the at least two contact surfaces 11 is preferably arranged in front of the at least one nozzle surface 09 in the x-direction and at least one contact surface 11 of the at least two contact surfaces 11 is arranged in the x-direction after it.
  • the y-direction and an x-direction and a z-direction form a Cartesian coordinate system.
  • the x-direction preferably corresponds to a direction along a shortest side of the respective nozzle bar 04.
  • the y-direction preferably corresponds to a direction along a longest side of the respective nozzle bar 04.
  • the z-direction is preferably parallel to a normal vector of a plane that passes through the x-direction and the y-direction is spanned.
  • a transverse direction A is preferably a direction that runs parallel to a longest side of the at least one nozzle bar 04.
  • the transverse direction A is preferably arranged parallel to the y-direction.
  • the x-direction is preferred arranged orthogonally to the transverse direction A.
  • the working width is in particular parallel to the transverse direction A.
  • the transverse direction A is preferably orthogonal to a transport direction T.
  • the working width is, above and below, the maximum width that a printing substrate 03 may have in order to still be able to be processed with the at least one printing unit 01 of the printing press; this therefore corresponds to the maximum width of the printing medium that can be processed with the at least one printing unit 01 of the printing press respective printing substrate 03.
  • the working width preferably corresponds to an extension of the at least one exit surface 09 of at least one print head 08 along the y-direction, which is preferably used for printing the printing substrate 03.
  • the working width of the printing machine is preferably at least 100 cm (one hundred centimeters), more preferably at least 150 cm (one hundred and fifty centimeters), even more preferably at least 160 cm (one hundred and sixty centimeters), even more preferably at least 200 cm (two hundred centimeters) and even more preferably at least 250 cm (two hundred and fifty centimetres).
  • the printing material 03 is a substrate that can be printed on by the at least one printing unit 01 with a medium, in particular a printing fluid.
  • Printing substrate 03 is preferably in the form of paper and/or cardboard and/or foil, for example a plastic foil, and/or textile and/or metal.
  • the printing material 03 is designed in particular as a web or sheet.
  • the spatial area provided for the transport of a printing substrate 03, which the printing substrate 03 occupies at least temporarily if it is present, is the transport route.
  • the transport path is defined by at least one means of transport, in particular by the at least one printing material guide element 02.
  • the at least one printing material guide element 02 is preferably in the form of at least one roller and/or at least one cylinder and/or at least one support and/or at least one other device for guiding the printing material 03 in a printing operating state of the printing press.
  • the transport direction T is a direction provided for a printing operating state of at least one printing unit 01 of the printing press, in which direction the printing material 03 is transported if it is present at any point along the transport path.
  • the transport direction T is preferably a direction that runs parallel to a shortest side of the at least one nozzle bar 04.
  • the transverse direction A is the axial direction orthogonal to the transport direction T.
  • the transport direction T is parallel to the x-direction and/or, for example, the transverse direction A is parallel to the y-direction of the Cartesian coordinate system at a location of the smallest distance from a relevant print head 08 to the transport route.
  • a printing fluid refers to inks, printing inks and/or varnishes, as well as other materials, which are and/or can be transferred to a printing substrate 03 by a printing press or at least one printing unit 01 of the printing press.
  • a printing fluid located in a volume of print head 08, in particular in the form of drops, can preferably leave the volume of print head 08 in question through an opening in exit surface 09.
  • a cleaning agent and/or cleaning fluid refers above and below in particular to a liquid that is used to clean individual components of a printing press, in particular to clean at least one exit surface 09 of at least one print head 08.
  • the cleaning agent is preferably used to remove residues of the at least one printing fluid on components of the printing press, in particular the exit surface 09 of at least one print head 08 and/or a positioning gap 07 between two print heads 08 arranged next to one another Cleaning agent water and / or at least one surfactant and / or at least one solvent.
  • a printing unit 01 comprises at least one nozzle bar 04.
  • a printing unit 01 comprises at least two nozzle bars 04, preferably at least four nozzle bars 04, for example exactly four nozzle bars 04.
  • the at least one nozzle bar 04 is arranged, for example, in at least one printing position, for example shown in 1 .
  • the printing position describes that position of the nozzle bar 04 in which the nozzle bar 04 is arranged when the printing press is in a printing operating state.
  • a respective print head 08 arranged in its printing position is preferably characterized in that the respective exit surface 09 is separated from the intended transport path for at least one printing substrate 03 and/or from the at least one printing substrate 03 and/or from the printing substrate guide element 02 assigned to the respective nozzle bar 04 Having a distance of at most 5 mm (millimeters), preferably at most 1.5 mm and/or at least 0.5 mm, preferably at least 1.0 mm.
  • At least one printing material 03 is guided along the transport direction T by means of the at least one printing material guide element 02 through a space between the respective printing material guide element 02 and the relevant nozzle bar 04.
  • the at least one print head 08, each with at least one exit surface 09, is positioned in the relevant nozzle bar 04 facing the printing material guide element 02.
  • the at least one nozzle bar 04 preferably comprises at least one print head 08, in particular at least two print heads 08.
  • the at least two print heads 08 are preferably arranged next to one another, in particular adjacent.
  • the at least two print heads 08 are preferably next to one another along the y-direction, in particular adjacent to one another, preferably adjacent, and/or preferably partially in the x-direction overlapping, arranged.
  • the individual print heads 08 of the nozzle bar 04 in question are preferably arranged along the y-direction within at least one row, preferably within at least two, in particular parallel, rows of print heads 08.
  • the respective exit surfaces 09 of at least two print heads 08 arranged next to one another, preferably adjacent ones, in particular within a row, are each positioned at a distance from one another, in particular in the y direction, by the at least one positioning gap 07.
  • the at least two print heads 08 arranged next to one another in the y direction are preferably arranged spaced apart from one another by the at least one positioning gap 07. More preferably, the at least two print heads 08 arranged next to one another in the y direction, in particular adjacent print heads 08, in particular the respective exit surfaces 09 of the print heads 08 arranged next to one another in particular in the y direction, delimit the corresponding positioning gap 07 in the y direction. This makes it easier, for example, to position the respective print heads 08.
  • the print heads 08 of the nozzle bar 04 which are preferably arranged in a row in the y-direction, for example in the x-direction, preferably in the transport direction T, are each arranged at least partially obliquely overlapping and/or preferably the respective exit surfaces 09 of the corresponding print heads 08 are arranged spaced apart from one another in the y-direction by the respective one positioning gap 07.
  • the nozzle bar 04 comprises, for example, at least two preferably parallel rows of print heads 08, one row in the y-direction comprising at least two print heads 08, preferably a large number of print heads 08.
  • the print heads 08 of the rows arranged in the y-direction are preferably arranged offset from one another in the x-direction, as a result of which the respective exit surfaces 09 of the print heads 08 arranged offset from one another preferably at least partially overlap.
  • the at least one printing unit 01 preferably has at least two nozzle bars 04, for example at least four nozzle bars 04.
  • each nozzle bar 04 of the at least one printing unit 01 has a different pressure fluid than the other nozzle bars 04, for example a different color.
  • the printing press has at least two printing units 01, each with at least one, preferably at least two, more preferably at least four, nozzle bars 04.
  • at least eight different colors can be printed and/or the at least one printing substrate 03 can be printed on both the top and bottom.
  • At least one nozzle bar 04 of the nozzle bars 04 preferably has cyan or magenta or yellow or black or at least one special color as the color of the printing fluid.
  • the at least one nozzle bar 04 preferably has at least one print head 08, preferably at least one inkjet print head 08 and/or at least one inkjet print head.
  • the at least one print head 08 preferably has the at least one exit surface 09 and preferably at least one, in particular at least two, contact surfaces 11.
  • the at least one contact surface 11 is preferably designed as a spacer surface 11 .
  • the contact surface 11 is preferably designed in such a way that the at least one exit surface 09 is arranged to avoid unwanted contact with components or other bodies, for example when the at least one exit surface 09 is being cleaned.
  • the spacing surface 11 preferably extends over the entire extent of the respective print head 08 However, dimensions over only part of the extent of the respective print head 08 are also possible.
  • the at least one exit surface 09 of the at least one print head 08 is a surface of the respective print head 08 that faces the transport path and is located in particular in a plane whose normal vector is arranged parallel to the z-direction.
  • the exit surface 09 is designed, for example, as a parallelogram, preferably as a non-rectangular parallelogram.
  • a further exemplary embodiment of the exit surface 09 is a trapezium, in particular an isosceles trapezium.
  • the exit surface 09 preferably includes at least one opening, in particular a large number of openings, through which the printing fluid can leave at least one volume, in particular a large number of volumes, of the relevant print head 08, preferably in the form of drops.
  • An exit direction of the at least one exit surface 09 is the direction in which the printing fluid exits and/or can exit the respective print head 08 through at least one opening of the corresponding exit surface 09.
  • the exit direction of the exit surface 09 is preferably at least in one component and more preferably completely parallel to a surface normal of the exit surface 09 of the respective print head 08.
  • the respective exit surfaces 09 of the relevant print heads 08 of a nozzle bar 04 which are arranged next to one another in the y-direction, are preferably arranged at least partially adjacent to one another in the x-direction, more preferably at least partially overlapping.
  • the sum of all exit surfaces 09 within at least one row, for example at least two rows, of print heads 08 of a nozzle bar 04 arranged in the y-direction extends over the entire working width of the respective nozzle bar 04.
  • Each position is therefore along a straight line in y - Direction on the transport path associated with an opening within an exit surface 09 of the nozzle bar 04 in question, through which the pressure fluid can leave a volume of a corresponding print head 08 of the nozzle bar 04.
  • At least two print heads 08 in the y-direction are preferred within a nozzle bar 04 arranged side by side, in particular adjacent to one another.
  • two print heads 08 are arranged adjacent to one another in the y-direction within a row of print heads 08.
  • the respective exit surfaces 09 of the at least two print heads 08 are preferably arranged spaced apart from one another by the one positioning gap 07.
  • the at least one positioning gap 07 preferably extends in the y-direction by a maximum of 0.5 mm (zero point five millimeters), in particular by a maximum of 0.2 mm.
  • the at least one positioning gap 07 extends in the y-direction by at least 0.05 mm (zero point zero five millimeters), preferably at least 0.1 mm.
  • a longitudinal direction of the at least one positioning gap 07, preferably the positioning angle 46 of the longitudinal direction of the positioning gap 07, is preferably arranged in a plane spanned by the x-direction and the y-direction.
  • the longitudinal direction of the at least one positioning gap 07 is preferably that direction in which the greatest extent of the at least one positioning gap 07 occurs.
  • a cleaning direction G and/or the y-direction preferably points to a longitudinal direction of the positioning gap 07 in a positive mathematical sense of rotation, i.e. counterclockwise, at a preferably level angle, in particular a positioning angle 46, of at least 50° (fifty degrees ), preferably at least 60° (sixty degrees), more preferably at least 70° (seventy degrees) and/or at most 130° (one hundred and thirty degrees), preferably at most 120° (one hundred and twenty degrees), more preferably at most 110° (one hundred and ten degrees), up.
  • the longitudinal direction of the positioning gap 07 preferably has a planar angle to the cleaning direction G, in particular an opening angle 47, which is preferably an acute angle or an obtuse angle.
  • the longitudinal direction of the positioning gap 07 corresponds to the longitudinal direction of the Positioning gap 07, is arranged in the plane spanned by the x-direction and the y-direction.
  • the longitudinal direction of the positioning gap 07 is preferably that direction in which the greatest extent of the positioning gap 07 occurs.
  • the longitudinal direction of the positioning gap 07 is preferably oriented within the plane spanned by the x-direction and the y-direction with at least one component orthogonal to the cleaning direction G.
  • Positioning angle 46 thus corresponds, for example, to the at least partial oblique overlap in the x-direction of at least two print heads 08 arranged next to one another, in particular adjacent to one another.
  • Positioning angle 46 preferably has an angle that is not equal to 90°.
  • at least one component of the longitudinal direction of the at least one positioning gap 07 preferably within the plane spanned by the x-direction and the y-direction, has a value greater than zero, with the component being orthogonal to the y-direction and/or orthogonal to the Cleaning direction G is oriented.
  • the printing machine preferably has at least one control unit.
  • the at least one control unit is preferably designed to control the at least one print head 08.
  • the at least one control unit is preferably connected to the at least one print head 08, at least by way of lines.
  • the at least one control unit is preferably designed to control the ejection of pressurized fluid through the at least one opening within the at least one nozzle surface 09.
  • At least one feed device 13 for ejecting a fluid is preferably assigned to the respective positioning gap 07.
  • the at least one feed device 13 is preferably designed as a nozzle 13, in particular as a cleaning nozzle 13.
  • the feed device 13 is also preferably designed as a nozzle 13 for ejecting fluid, preferably a gaseous fluid and/or compressed gas.
  • the feed device 13 is arranged so that a fluid, for example a compressed gas and/or a gas mixture, in particular air, and/or a liquid can flow through the respective feed device 13 in such a way that the fluid can leave the feed device 13, in particular through an outlet opening 17, in an outlet direction L.
  • At least one component of the outlet direction L is preferably directed towards the respective positioning gap 07.
  • At least one feed device 13 for ejecting a fluid with an outlet direction L is preferably assigned to the respective positioning gap 07, with at least one component of the outlet direction L being directed towards the respective positioning gap 07.
  • the outlet opening 17 of the feed system 13 is preferably directed towards the positioning gap 07, for example from above and/or from above the printing material guide element 02 in the direction of the printing material guide element 02.
  • the feed device 13 preferably comprises at least one feed element 14 and/or at least one outlet element 16; 43, wherein the at least one outlet element 16; 43 is preferably embodied as at least one delimiting element 16 and/or at least one opening element 43, and/or the at least one outlet opening 17.
  • the feed device 13 preferably has at least one cavity, which is preferably connected to the at least one outlet opening 17.
  • the at least one outlet element 16; 43 each formed as at least one metal sheet or a tube.
  • the delimiting element 16 is preferably flat, for example as a flat sheet metal.
  • the at least one opening element 43 preferably comprises at least one cutout 17, which is more preferably configured as the at least one outlet opening 17.
  • the at least one feed system 13 is preferably connected to at least one print head 08 of the respective print heads 08, which delimit the respective positioning gap 07.
  • the at least one nozzle bar 04 preferably comprises the at least one Feeding device 13, wherein the feeding device 13 is preferably positioned in the z-direction on the side of the exit surface 09 that faces away from the at least one opening of the respective exit surface 09.
  • the at least one nozzle bar 04 preferably includes the at least one feed device 13, with the feed device 13 preferably being arranged in the z-direction on the side facing away from the transport path of at least one exit surface 09 of at least one print head 08 of the corresponding nozzle bar 04 and/or with the respective outlet direction L of the at least one feed system 13 is directed towards at least one positioning gap 07 between two print heads 08, which are preferably adjacent in the y direction.
  • the at least one feed system 13 is preferably arranged in the z-direction on the side of the respective exit surface 09 that faces away from the transport path. More preferably, the at least one feed device 13 is positioned on that side of the print head 08, in particular the exit surface 09, on which the print head 08 is attached to the corresponding nozzle bar 04. More preferably, the at least one feed device 13 is positioned such that the outlet direction L is directed from one side of the print head 08, in particular one side of the exit surface 09, onto the at least one positioning gap 07, in which the print head 08 is attached to the corresponding nozzle bar 04 .
  • the feed device 13 is preferably arranged at a distance from the positioning gap 07 in the z-direction. More preferably, the feed device 13 is arranged adjacent to the positioning gap 07 in the z-direction.
  • the outlet opening 17 is preferably arranged at a distance from the positioning gap 07 in the z-direction. More preferably, the outlet opening 17 is arranged adjacent to the positioning gap 07 in the z-direction.
  • the feed device 13, in particular the respective outlet opening 17 is preferably arranged at a distance in the z direction from the respective exit surfaces 09 of two print heads 08, which are arranged in the y direction are arranged side by side and whose exit surfaces 09 delimit the corresponding positioning gap 07.
  • the outlet direction L is preferably a direction in which a fluid, for example a gas and/or a gas mixture, in particular air, and/or a liquid, the feed device 13 in question, preferably through the at least one outlet element 16; 43, in particular the at least one outlet opening 17, can leave.
  • a fluid for example a gas and/or a gas mixture, in particular air, and/or a liquid
  • the feed device 13 in question preferably through the at least one outlet element 16; 43, in particular the at least one outlet opening 17, can leave.
  • at least one component of the outlet direction L is parallel and/or points in an identical direction to the outlet direction of the at least one outlet surface 09 of a print head 08 of the nozzle bar 04. More preferably, at least one component of the outlet direction L is parallel and/or points in an identical direction Direction to the surface normal of the exit surface 09 of the respective print head 08 and/or a direction in which the printing fluid can leave the respective exit surface 09.
  • the outlet direction L is preferably parallel to a main direction, which is preferably defined by at least one side wall of the feed device 13, which is more preferably defined by the at least one delimiting element 16.
  • the outlet direction L preferably has at least one component in the z-direction, with the component in the z-direction preferably facing the transport path.
  • the outlet direction L includes at least one component in the z-direction and at least one component in the x-direction, the component in the z-direction being larger than the component in the x-direction.
  • the outlet direction L is preferably a direction within a plane leading to the position of the positioning gap 07 along the y-direction, for example, shifted by the z-direction and at least one direction of a shortest boundary, which is in a plane of the x-direction and y-direction is spanned, the respective exit surface 09 of the relevant print head 08, which preferably includes the positioning gap 07 is limited, expanded.
  • the extent of the at least one feed device 13 in the y direction is identical to the extent of the respective positioning gap 07 in the y direction. More preferably, the at least one feed device 13 extends in the y-direction by a maximum of 0.5 mm (millimeters), in particular by a maximum of 0.2 mm. More preferably, the at least one feed device 13 extends in the y-direction by at least 0.05 mm, preferably at least 0.1 mm.
  • the outlet opening 17 is preferably in the plane that runs through the z-direction and at least one direction of the shortest boundary, which is spanned in a plane in the x-direction and y-direction, of the respective exit surface 09 of the print head 08 in question, with the respective exit surface 09 delimits the positioning gap 07, is designed in such a way that the relevant outlet opening 17 has smaller dimensions in the z-direction far from the respective exit surface 09, in particular far from the transport path, than in the z-direction close to the exit surface 09, in particular close to the transport route.
  • the outlet opening 17 preferably points in the plane which is displaced to the position of the positioning gap 07, for example along the y-direction, through the z-direction and at least one direction of the shortest boundary, which is spanned in a plane of the x-direction and y-direction , the respective exit surface 09 of the print head 08 in question, which delimits the positioning gap 07, is spanned into a shape that corresponds, for example, to a two-dimensional longitudinal section of a cone.
  • the diameter of the outlet opening 17, measured in the direction of the shortest boundary, which is spanned in a plane in the x-direction and y-direction, of the exit surface 09, which bounds the positioning gap 07 preferably increases along the z-direction in the direction of the transport route to.
  • the at least one outlet opening 17 at the point of the feed device 13, which is the smallest distance from the respective positioning gap 07 has a maximum diameter. More preferably, the maximum diameter of the corresponding outlet opening 17 is greater than the extent of the at least one exit surface 09 of the relevant print head 08, which is arranged on the corresponding positioning gap 07, in the direction of the shortest boundary of the respective exit surface 09.
  • the delimiting element 16 preferably delimits the respective outlet opening 17 on one side in the y-direction.
  • the respective delimiting element 16 is preferably in direct contact with the respective opening element 43.
  • the feed element 14 is in direct contact with the respective opening element 43, so that there is preferably a connection between at least one cavity of the supply element 14 and the respective outlet opening 17.
  • the opening element 43 and in particular the respective outlet opening 17 of the corresponding feed device 13 is arranged between the respective delimiting element 16 and the respective feed element 14 .
  • the supply element 14 preferably comprises the at least one cavity, the cavity being connected to at least one source for supplying the at least one fluid, for example a gas and/or a gas mixture, in particular air, and/or a liquid, and to the outlet opening 17 .
  • the at least one fluid for example a gas and/or a gas mixture, in particular air, and/or a liquid
  • a fluid for example a gas and/or gas mixture and/or a liquid
  • the at least one fluid in particular compressed gas, flows through the cavity of the supply element 14 and preferably meets the delimiting element 16 through the recess 17 of the opening element 43.
  • the fluid for example the gas and/or the gas mixture and/or the Liquid, for example deflected in such a way that the fluid preferably flows out of the respective feed device 13 through the at least one outlet opening 17 in
  • the fluid for example the gas and/or the gas mixture and/or the liquid, preferably has a pressure of at least 0.1 bar, in particular at least 0.2 bar, and at most 0.7 bar, in particular, when it exits from the feed device 13 of a maximum of 0.5 bar.
  • an exit of the fluid in the exit direction L is indicated by dashed lines as an example.
  • the nozzle bar 04 comprises at least one positioning guide 06, which is preferably arranged to be movable, in particular linearly movable.
  • the respective nozzle bar 04 in particular the respective print heads 08 of the nozzle bar 04, can preferably be and/or can be arranged in the at least one printing position and/or at least one idle position and/or at least one maintenance position by means of the respective positioning guide 06.
  • the at least one positioning guide 06 is preferably configured to arrange the at least one nozzle bar 04 in its at least one position, preferably in at least one printing position and/or in at least one maintenance position and/or in at least one rest position.
  • the at least one control unit is preferably configured to control the at least one positioning guide 06.
  • the at least one control unit is preferably connected, at least by cable, to the at least one positioning guide 06, preferably to at least one drive of the at least one positioning guide 06.
  • the at least one nozzle bar 04 is preferably moved from the at least one printing position to the at least one idle position by moving in a direction that has a larger or maximum component in the vertical direction or the z-direction and a smaller or minimum component in the horizontal direction or into the at least one maintenance position and/or from the at least one rest position into the at least one printing position or into the at least one maintenance position and/or from the at least one maintenance position into the at least one printing position or into the at least one rest position .
  • the at least one nozzle bar 04 preferably has the at least one printing position in which the at least one nozzle bar 04 is preferably arranged in a printing operating state.
  • the at least one nozzle bar 04 preferably the at least one nozzle surface 09, is preferably at a distance from the transport path of printing substrate 03 of no more than 5 mm (five millimeters), preferably no more than 1.5 mm (one point five millimeters). and/or which is at least 0.5 mm (zero point five millimeters), preferably at least 1.0 mm (one point zero millimeter).
  • the at least one nozzle bar 04 preferably has the at least one maintenance position.
  • the at least one maintenance position is preferably a position in which the at least one print head 08 of the nozzle bar 04 in question can be serviced, for example cleaned and/or aligned, preferably without the corresponding print head 08 being removed from the nozzle bar 04 and/or the printing assembly 01 and/or to be taken from the printing machine.
  • the respective maintenance position of a nozzle bar 04, in particular of the relevant print heads 08 is preferably characterized in that different nozzle bars 04 arranged in their respective maintenance positions are at different distances from one another than in their respective printing positions and/or in their respective idle positions.
  • the distance between the respective exit surface 09 of a print head 08 arranged in a maintenance position and the intended transport path for at least one printing substrate 03 and/or from the at least one printing substrate 03 and/or from the printing substrate guide element 02 assigned to the respective nozzle bar 04 is preferably greater than in the corresponding print position.
  • the idle position is preferably a position in which the at least one print head 08 is removed from the printing press and/or the at least one printing unit 01 and/or the at least one nozzle bar 04 and/or placed in the printing press and/or the at least one printing unit 01 and/or or the at least one nozzle bar 04 can be used.
  • the operator when the operator is in the rest position, there is preferably more space available to access the at least one print head 08, while in the maintenance position there is preferably only sufficient space to be able to carry out internal, in particular automatic processes within the printing press, for example cleaning of at least one exit surface 09 of at least one print head 08.
  • Figure 4a shows, for example, a schematic representation of at least one printing unit 01 with a plurality of nozzle bars 04, with at least one nozzle bar 04 being arranged in the printing position and at least one nozzle bar 04 being arranged in the idle position.
  • Figure 4b shows, for example, a schematic representation of a printing assembly 01 with a plurality of nozzle bars 04 according to FIG Figure 4a , wherein at least one nozzle bar 04 is arranged in a maintenance position.
  • the printing press preferably has at least one cleaning device 18 .
  • the at least one printing unit 01 preferably includes the at least one cleaning device 18.
  • Each nozzle bar 04 of a printing unit 01 is preferably assigned at least one cleaning device 18.
  • the at least one print head 08 of a nozzle bar 04 arranged in the maintenance position is assigned a cleaning device 18, which is positioned in a cleaning position via a guide system 19.
  • the at least one cleaning device 18 is provided for cleaning the at least one exit surface 09 and/or the at least one contact surface 11 of the at least one print head 08 of a corresponding nozzle bar 04.
  • the at least one cleaning device 18 preferably additionally or alternatively cleans the at least one positioning gap 07.
  • the at least one cleaning device 18 is preferably designed to clean the at least one nozzle surface 09 and the at least one contact surface 11.
  • Figure 5a shows an example of a corresponding cleaning device 18 in the cleaning position, which is preferably assigned to a nozzle bar 04 in the maintenance position. For the sake of clarity, only four print heads 08 of the relevant nozzle bar 04 are shown.
  • the cleaning position of the at least one cleaning device 18 preferably corresponds to a position in which the cleaning device 18 is in direct or indirect contact with at least one, in particular one, print head 08 of the relevant nozzle bar 04 that is to be cleaned, and/or preferably a position in which the cleaning device 18 is to carry out the cleaning of the at least one print head 08 of the relevant nozzle bar 04.
  • the at least one cleaning device 18 preferably has at least one guide system 19.
  • the at least one cleaning device 18 is preferably movable, in particular as a whole, at least orthogonally to the transverse direction A, preferably via at least one guide system 19.
  • at least one exit surface 09 of at least one print head 08 in particular one exit surface 09 of at least two, preferably at least three and more preferably at least four print heads 08, is preferably assigned to at least one cleaning device 18 and /or assignable.
  • a printing unit 01 preferably comprises at least one cleaning device 18 per nozzle bar 04.
  • At least two cleaning devices 18 are connected to a preferably common guide system 19 and/or are configured to be movable and/or move through the one preferably common guide system 19.
  • the at least one guide system 19 preferably has at least one guide element designed, for example, as a beam and/or rod and/or rail and/or linear guide.
  • the at least one cleaning device 18 is preferably designed to move and/or be movable along the at least one guide element and/or is moved, prefer to proceed in a straight line.
  • the at least one cleaning device 18 is preferably arranged such that it can be moved and/or moved linearly via the at least one guide system 19, preferably by means of at least one cleaning drive.
  • the at least one cleaning device 18 is preferably moved along a guide path of the at least one guide element.
  • the guide path is preferably arranged along the at least one guide element in a plane whose normal vector corresponds to the transverse direction A and/or the y-direction.
  • the guide path preferably has a larger component in the horizontal direction and a smaller component in the vertical direction, more preferably the guide path is horizontal.
  • the at least one cleaning device 18 preferably has at least one storage position and at least one use position.
  • the at least one cleaning device 18 is preferably moved along the at least one guide element from the at least one storage position into the at least one use position and/or vice versa.
  • the at least one storage position of the at least one cleaning device 18 is preferably a position in which the at least one cleaning device 18 is outside the area between the at least one nozzle bar 04 and the transport path of the at least one printing substrate 03, for example defined by the at least one of the at least one nozzle bar 04 opposite printing material guide element 02, is arranged.
  • the at least one cleaning device 18 is preferably arranged in the at least one storage position in the x-direction before or after the at least one nozzle bar 04.
  • the at least one usage position of the at least one cleaning device 18 is preferably a position in which the at least one cleaning device 18 is within the area between the at least one nozzle bar 04 and the transport path of the at least one printing substrate 03, for example defined by the at least one of the at least one nozzle bar 04 opposite printing material guide element 02, is arranged.
  • the at least one cleaning device 18 is preferably arranged in the at least one usage position during cleaning of the at least one print head 08.
  • the at least one printing unit 01 preferably has the at least two nozzle bars 04.
  • the at least one printing unit 01 then preferably has at least two cleaning devices 18.
  • One cleaning device 18 of the at least two cleaning devices 18 is preferably assigned to one nozzle bar 04 of the at least two nozzle bars 04.
  • the at least two cleaning devices 18 preferably have the at least one guide system 19, which is preferably designed as a common guide system 19.
  • the at least two cleaning devices 18 are preferably moved together along the at least one guide element of the at least one common guide system 19 from their at least one use position to their at least one storage position and/or vice versa.
  • the cleaning device 18 assigned to the corresponding nozzle bar 04 is preferably embodied as at least one locking element, for example in the form of at least one maintenance stop.
  • the nozzle bar 04 having the corresponding print head 08 is preferably pulled and/or pressed against the cleaning device 18 by the application of a force and/or, for example, by gravity.
  • the maintenance position of the at least one nozzle bar 04 is preferably clearly defined.
  • the at least one cleaning device 18 preferably comprises at least one cleaning guide 44 and/or at least one cleaning drive 21 and/or at least one collecting tray 22 and/or at least one support device 23; 24 and/or at least one cleaning unit 26, preferably at least one cleaning unit 26 per row of print heads 08 in the y-direction of the relevant nozzle bar 04.
  • the at least one cleaning device 18 is preferably via at least one guide system 19, preferably by means of the cleaning drive 21 preferably arranged linearly movable.
  • the at least one support device 23; 24 is preferably designed as at least one positioning aid 23 and/or as at least one cleaning aid 24.
  • the at least one cleaning device 18 preferably extends in the transverse direction A that is at least as large as the working width of the at least one nozzle bar 04 in the transverse direction A.
  • the at least one cleaning device 18 preferably extends in the transport direction T of the printing substrate 03 which is at least as large as the working width of the at least one nozzle bar 04 in transport direction T. This means that preferably all exit surfaces 09 of all print heads 08 of the at least one nozzle bar 04 can be cleaned in one operation.
  • the at least one cleaning device 18 has an extent in transport direction T that is at least as large as all the working widths of all nozzle bars 04 of printing assembly 01 in transport direction T taken together. As a result, all exit surfaces 09 of all print heads 08 of the at least one printing assembly 01 can be cleaned in one operation.
  • the at least one cleaning unit 26, preferably the at least one cleaning element 31, is preferably arranged to be movable along the cleaning guide 44, for example by means of the cleaning drive 21, and/or is moved along the cleaning guide 44. More preferably, the at least one cleaning unit 26 is arranged to be movable in and/or counter to a cleaning direction G and/or is moved.
  • the at least one collecting tray 22 is preferably arranged at least partially surrounding the at least one cleaning unit 26 .
  • the collecting tray 22 is more preferably arranged in such a way that the collecting tray 22 at least partially encloses the cleaning unit 26 and the at least one print head 08 of the nozzle bar 04 in question that is arranged in the maintenance position.
  • the at least one cleaning device 18 preferably has at least one cleaning guide 44 .
  • the at least one cleaning guide 44 is preferably arranged along the longitudinal direction of the at least one cross member 22, for example within the at least one cross member 22.
  • the at least one cleaning element 31 is preferably arranged such that it can move and/or move along the longitudinal direction of the at least one cross member 22 and/or preferably along the at least one cleaning guide 44, for example driven by at least one cleaning drive.
  • the at least one cleaning drive is preferably controlled by the at least one control unit of the printing press.
  • the at least one cleaning element 31 is preferably arranged to be movable in and/or counter to the cleaning direction G and/or is moved.
  • the cleaning direction G is preferably the direction in which an element cleaning the at least one print head 08, preferably the at least one cleaning element 31, passes this at least one print head 08.
  • the cleaning direction G is preferably a direction G in which the at least one cleaning element 31 of the at least one cleaning device 18 is arranged to be movable and/or is designed to move, preferably for carrying out a cleaning step.
  • the cleaning direction G is preferably horizontal.
  • the cleaning direction G preferably has at least one component which is arranged parallel to the transverse direction A and/or parallel to the y-direction and is preferably oriented opposite to the y-direction.
  • the cleaning direction G is arranged parallel to the transverse direction A and/or parallel to the y-direction and is preferably oriented opposite to the y-direction.
  • the cleaning direction G is preferably oriented orthogonally to at least one transport direction T provided for transporting at least one printing substrate 03 and/or orthogonally to the x-direction.
  • the at least one cleaning unit 26 and more preferably at least one cleaning element 31 is preferably arranged such that it can be moved in and/or counter to the cleaning direction G.
  • the at least one cleaning unit 26 is preferred and the at least one cleaning element 31 is more preferred arranged to be movable at least in the cleaning direction G during a cleaning process for cleaning at least one exit surface 09 of at least one print head 08.
  • the cleaning device 18 preferably has the at least one cleaning element 31 .
  • the at least one cleaning unit 26 preferably comprises at least one mounting element 28, preferably at least two mounting elements 28, and/or at least one power element 29 and/or at least one carrier 27 and/or the at least one cleaning element 31.
  • the at least one mounting element 28 is preferred at least two assembly elements 28 and/or the at least one force element 29 and/or the at least one carrier 27 and/or the at least one cleaning element 31 within the corresponding cleaning unit 26, preferably firmly connected to one another.
  • the at least one assembly element 28, in particular the at least two assembly elements 28, are preferably in direct contact with the at least one force element 29.
  • the at least one force element 29 is designed, for example, as a bellows and/or hollow body and/or spring and is preferred in terms of its expansion and/or or dimensions adjustable in the z-direction, preferably in a direction whose main component corresponds to the z-direction.
  • the at least one carrier 27 is preferably embodied as a base body and/or preferably carries the at least one assembly element 28, preferably at least two assembly elements 28, and/or the at least one force element 29 and/or the at least one cleaning element 31 of the corresponding cleaning unit 26 the at least one cleaning element 31 is arranged in direct contact with at least one mounting element 28.
  • the extent and/or dimensions of the cleaning unit 26 in the z-direction can preferably be adjusted by changing the extent and/or dimensions of the at least one force element 29 of the cleaning unit 26 in question and/or changeable and/or movable.
  • This mobility means that the at least one cleaning element 31 can preferably be brought into contact with other components and/or removed from contact, with the at least one print head 08 and/or the at least one support device 23; 24 come into question.
  • the at least one cleaning unit 26 comprises the at least one cleaning element 31, which is connected to the at least one carrier 27 via the at least one force element 29, preferably via at least four force elements 29, for example via exactly four force elements 29.
  • the at least one force element 29, in particular the at least four force elements 29, is preferably designed as a spring.
  • the at least one cleaning element 31 is preferably mounted and/or fixed in the at least one carrier 27, which is preferably designed as a base body, by the at least one force element 29, preferably in a floating manner.
  • the cleaning device 18 preferably has at least one positioning aid 23 that is different from each print head 08, which preferably has at least one contact surface that is oriented in the same direction as the at least one contact surface 11 and/or exit surface 09 of the at least one print head 08 the at least one contact surface of the positioning aid 23, preferably adjacent to or spaced apart from the at least one contact surface 11 of a relevant print head 08 with respect to the cleaning direction G. More preferably, the contact surface of the positioning aid 23 in the z-direction has an identical component to the exit surface 09 of one with the corresponding cleaning element 31 too cleaning print head 08.
  • the contact surface of the positioning aid 23 is oriented in the same direction as the at least one exit surface 09.
  • the cleaning element 31 is preferably embodied as a contact element, for example as a wiper.
  • the contact surface of the positioning aid 23 is oriented in the same direction as the at least one contact surface 11, in particular the at least one spacer surface 11
  • the at least one positioning aid 23 is preferably arranged in such a way that the at least one cleaning element 31 is arranged so that it can be clearly positioned relative to at least one print head 08, in particular that is to be cleaned.
  • the cleaning device 18 preferably comprises at least one cleaning aid 24.
  • the cleaning aid 24 is preferably designed in such a way that the at least one cleaning element 31 can be cleaned.
  • the cleaning aid 24 preferably has at least one spray device and/or at least one wiping device.
  • the at least one cleaning device 18 preferably has at least one sealing element 56, for example at least one sealing lip.
  • the at least one sealing element 56 is arranged within at least one traverse 22 of the at least one cleaning device 18 .
  • the at least one cleaning device 18 is preferably in the at least one usage position while the at least one nozzle surface 09 of the at least one print head 08 is being sealed with the at least one sealing element 56, i.e. when there is direct contact between the at least one sealing element 56 and the at least one print head 08 arranged.
  • the at least one nozzle bar 04 is preferably lowered onto the at least one cleaning device 18, for example from the at least one maintenance position.
  • the at least one sealing element 56 with the at least one print head 08 and at least one delimitation unit configured, for example, as a support 57 forms an at least partially closed spatial area, preferably configured as a preservation area.
  • the preservation area preferably includes an atmosphere containing at least one preservation medium.
  • the at least one preservation medium preferably has at least air enriched with water and/or air enriched with compressed fluid.
  • the preservation area is flushed and/or flooded with at least one fluid, for example air and/or air enriched with water, for example, and/or cleaning agent and/or pressurized fluid.
  • This atmosphere is preferably designed to be gentle on the at least one nozzle surface 09 and protects the printing fluid of the at least one print head 08 from drying out.
  • the at least one sealing element 56 is preferably configured to seal all print heads 08 of the at least one row of print heads 08 together. For example, the at least one print head 08 is lowered onto the at least one sealing element 56.
  • the at least one cleaning device 18 preferably has the at least one cleaning element 31 .
  • the at least one cleaning element 31 is preferably designed to clean the at least one nozzle surface 09.
  • the nozzles of the nozzle surface 09 are thus advantageously cleaned so that there is no blockage and/or no change in the cross section of the respective nozzle, for example due to dried pressure fluid and/or dirt.
  • the at least one cleaning element 31 preferably additionally or alternatively cleans the at least one contact surface 11 educated. Dirt and/or pressurized fluid is thus advantageously removed from the at least one contact surface 11 .
  • substances that impede the guidance of the at least one cleaning element 31 along the cleaning direction G, in particular pressurized fluid and/or dirt are removed.
  • pressurized fluid and/or dirt can get from the at least one contact surface 11 onto the at least one nozzle surface 09, for example as a result of the movement of the at least one cleaning element 31 and/or as a result of air turbulence and/or other external influences.
  • Printing fluid and/or dirt remaining on the at least one contact surface 11 can also be transferred to a printing substrate 03 in an uncontrolled manner during the printing operation.
  • the at least one cleaning element 31 is preferably additionally or alternatively designed to clean the at least one positioning gap 07.
  • printing fluid and/or dirt can get out of the at least one positioning gap 07 onto the at least one nozzle surface 09 or escape uncontrolled from the positioning gap 07 during printing operation, for example due to the movement of the at least one cleaning element 31 and/or due to air turbulence and/or other external factors influences.
  • cleaning the at least one positioning gap 07 these risks are advantageously removed before the at least one print head 08 is damaged and/or before the quality of the printed image produced deteriorates.
  • the at least one cleaning element 31 is preferably embodied as a cleaning head 31.
  • the cleaning element 31 is preferably firmly connected to the at least one mounting element 28 and/or the at least one carrier 27 of the cleaning device 18 in question, in particular the cleaning unit 26 in question.
  • the at least one cleaning element 31 is preferably arranged such that it can be moved in and/or counter to the cleaning direction G.
  • the at least one is preferred Cleaning element 31 is designed to clean all nozzle surfaces 09 and/or contact surfaces 11 and/or positioning gaps 07 of the at least two print heads 08, which are arranged in the at least one row.
  • the at least one cleaning element 31 can be moved and/or is moved in the cleaning direction G and/or counter to the cleaning direction G for cleaning.
  • At least one cleaning agent and/or cleaning fluid preferably refers to a liquid that is used to clean individual components of the printing press, preferably to clean the at least one nozzle surface 09 of the at least one print head 08.
  • the cleaning agent is preferably used to remove soiling, for example dried coating material such as printing ink or ink and/or parts of a printing material such as paper fibers and/or dust and/or the like and/or mixtures of the substances mentioned.
  • the at least one cleaning agent has water and/or at least one surfactant and/or at least one solvent.
  • the at least one cleaning agent has pressurized fluid, which preferably contains no pigments.
  • the at least one cleaning fluid is preferably designed to at least partially dissolve the pressure fluid of the at least one nozzle bar 04.
  • the at least one cleaning element 31 preferably has at least one sliding surface 32.
  • the at least one sliding surface 32 preferably has a greater extent in the cleaning direction G than orthogonally to the cleaning direction G.
  • the at least one sliding surface 32 is preferably designed for direct contact with the at least one print head 08.
  • the at least one cleaning element 31 is preferably designed to come into direct contact with the at least one contact surface 11 of the at least one print head 08 by means of the at least one sliding surface 32 when the latter is arranged in a cleaning position.
  • the at least one sliding surface 32 When the at least one cleaning element 31 is positioned against the at least one print head 08 or vice versa and/or when the at least one cleaning element 31 moves in or counter to the cleaning direction G, the at least one sliding surface 32, preferably all sliding surfaces 32, is in contact, preferably direct contact, with the at least one contact surface 11.
  • the at least one sliding surface 32 is preferably arranged orthogonally to the cleaning direction G in front of or behind the at least one nozzle surface 09, i.e. preferably arranged laterally.
  • the surface of the at least one sliding surface 32 is preferably arranged in one plane.
  • the plane is preferably spanned by the x-direction and the y-direction.
  • the plane is preferably arranged parallel to a plane of the surface of the at least one contact surface 11 of the at least one print head 08, in particular when the at least one cleaning element 31 is placed against the at least one print head 08.
  • the cleaning element 31 has a higher coordinate in the z direction in the area of the at least one sliding surface 32 than in the area of the at least one cleaning area 37, preferably at least in the area of the at least one fluid supply 38, in particular its boundary 71.
  • the boundary preferably has 71 of the at least one fluid supply 71 in the z-direction at a distance from the surface of the at least one sliding surface 32.
  • the at least one nozzle surface 09 is advantageously protected against direct contact with the cleaning element 31. This advantageously ensures that the at least one nozzle surface 09 is not damaged by the at least one cleaning region 37, in particular the at least one fluid supply 38.
  • the at least one cleaning element 31 has at least two sliding surfaces 32.
  • the at least one cleaning element 31 preferably has at least two sliding surfaces 32 which are arranged one behind the other orthogonally to the cleaning direction G, that is to say next to one another in the cleaning direction G.
  • Preferred the at least two sliding surfaces 32 arranged one behind the other orthogonally to the cleaning direction G are arranged spaced apart from one another by the at least one cleaning region 37 .
  • the distance between the at least two sliding surfaces 32 arranged one behind the other orthogonally to the cleaning direction G preferably corresponds to the distance between two contact surfaces 11 arranged one behind the other orthogonally to the cleaning direction G of the at least one print head 08.
  • the at least two sliding surfaces 32 of the cleaning element 31, which are arranged next to one another in the cleaning direction G, are preferably at the same distance from one another as two contact surfaces 11 of a print head 08 that are spaced apart from one another in the x-direction.
  • the at least two sliding surfaces 32 of the cleaning element 31, which are arranged next to one another in the cleaning direction G, are preferably spaced at least as far apart as the length of a nozzle surface 09 in the x-direction. This advantageously ensures that the at least one nozzle surface 09 does not come into direct contact with at least one of the sliding surfaces 32 and is damaged by it.
  • the distance between the at least two sliding surfaces 32 arranged one behind the other orthogonally to the cleaning direction G is less than 50 mm (fifty millimeters), preferably less than 45 mm (forty-five millimeters), more preferably less than 40 mm (forty millimeters), more preferably less than 38 mm (thirty-eight millimeters).
  • the at least two sliding surfaces 32 arranged next to one another in the cleaning direction G prevent the at least one cleaning element 31 from tilting and/or canting to the side and/or these sliding surfaces 32 stabilize the at least one cleaning element 31 in the direction orthogonal to the cleaning direction G.
  • the at least one sliding surface 32 is preferably orthogonal to the cleaning direction G in front of or behind the at least one exit surface 09, for example spaced apart from the at least one exit surface 09 orthogonally to the cleaning direction G, so preferably arranged laterally.
  • the at least one cleaning element 31 preferably has the at least two sliding surfaces 32 which are arranged one behind the other in the cleaning direction G.
  • the at least two sliding surfaces 32 which are arranged one behind the other in the cleaning direction G, are spaced apart from one another by a distance greater than zero.
  • the at least one sliding surface 32 preferably has a greater extent in the cleaning direction G than orthogonally to the cleaning direction G.
  • These at least two sliding surfaces 32 are preferably arranged in alignment with one another in relation to the cleaning direction G.
  • the at least two sliding surfaces 32 arranged one behind the other in the cleaning direction G prevent the at least one cleaning element 31 from tipping and/or canting in the cleaning direction G and/or these sliding surfaces 32 stabilize the at least one cleaning element 31 in the cleaning direction G.
  • the points on the surface of the at least one cleaning element 31, which are arranged downstream of the at least one second fluid discharge 41, counter to the cleaning direction G, are preferably at a distance from the plane of the surface of the at least one sliding surface 32, preferably greater than zero.
  • the at least one cleaning element 31 preferably has the at least one sliding surface 32, preferably the at least two sliding surfaces 32, counter to the cleaning direction G only, preferably exclusively, in front of the at least one second fluid outlet 41.
  • the at least one sliding surface 32 is preferably designed to come into direct contact with the at least one contact surface 11 counter to the cleaning direction G only in front of the at least one second fluid discharge 41 .
  • no part of the at least one sliding surface 32 preferably the at least two sliding surfaces 32, and/or no further sliding surface 32 is arranged downstream of the at least one second fluid discharge 41, counter to the cleaning direction G. More preferred are the points on the surface of the at least one cleaning element 31, which are opposite to the cleaning direction G are arranged after the at least one second fluid discharge 41, are arranged in the z-direction below the plane of the surface of the at least one sliding surface 32.
  • the at least one cleaning element 31 is preferably designed to come into direct contact with the at least one contact surface 11 of the at least one print head 08 by means of the at least one sliding surface 32 when the latter is arranged in a cleaning position.
  • the at least one sliding surface 32 is preferably designed to come into direct contact with the at least one contact surface 11 counter to the cleaning direction G only in front of the at least one second fluid discharge 41 .
  • cleaning agent and/or pressurized fluid and/or dirt is preferably not entrained along the at least one sliding surface 32 .
  • This preferably prevents cleaning agent and/or pressure fluid and/or dirt from drying on the at least one sliding surface 32, which for example has a negative effect on the sliding function and/or is difficult to remove.
  • the at least one cleaning device 18 is designed to clean the at least two rows of print heads 08 of the at least one nozzle bar 04, preferably simultaneously and/or in parallel.
  • the at least one cleaning element 31 is designed to clean the at least two rows of print heads 08, or there are at least two cleaning elements 31 which each clean at least one row of the at least two rows of print heads 08.
  • the at least one nozzle bar 04 is preferably arranged in the at least one maintenance position for cleaning.
  • the at least one cleaning device 18 is preferably arranged in the at least one usage position for cleaning.
  • the cleaning head 31 is in direct or indirect contact with the at least one print head 08, then, for example, at least one cleaning fluid, in particular a cleaning agent, can be dispensed from the at least one fluid supply 38 in the immediate vicinity of the exit surface 09 of the at least one print head 08 and/or of a positioning gap 07 and through the at least one fluid discharge opening 39; 41 can also be sucked off again in the immediate vicinity of the exit surface 09 of the at least one print head 08 and/or a positioning gap 07.
  • at least one cleaning fluid in particular a cleaning agent
  • the cleaning head 31 is preferably brought so close to the at least one print head 08 that a cleaning gap is formed between the cleaning head 31 on the one hand and the exit surface 09 of the print head 08 on the other hand, through which the fluid, in particular the cleaning liquid, flows and thus the exit surface 09 of the at least one print head 08 and/or a positioning gap 07 is cleaned and/or is possible to clean.
  • the cleaning head 31 preferably has the at least one cleaning area 37 .
  • the at least one cleaning area 37 preferably has the at least one fluid supply 38 and the at least one fluid discharge opening 39; 41 on.
  • the cleaning area 37 more preferably has the at least one fluid inlet 38 and/or the at least one fluid outlet 39 and/or the at least one fluid suction 41.
  • the at least one fluid discharge opening 39; 41 each connected to at least one sink for removing cleaning agents and/or dirt and/or particles, for example.
  • the at least one fluid supply 38 is preferably connected to a source of cleaning agent.
  • the fluid supply 38 is preferably designed as a fluid supply opening 38 within the cleaning area 37 .
  • the at least one cleaning area 37 is preferably that area of the surface of the at least one cleaning element 31 which has the at least one fluid inlet 38 and the at least one fluid outlet opening 39; 41 included.
  • the components of the at least one cleaning area 37 are preferably at a distance greater than zero from the at least one print head 08, in particular from its nozzle surface 09 and/or from its at least one contact surface 11, when the at least one cleaning element 08 is placed against the at least one print head 08 is.
  • the surface of the at least one cleaning area 37 is preferably at a distance greater than zero from the at least one print head 08, in particular from its nozzle surface 09 and/or from its at least one contact surface 11, preferably permanently spaced.
  • the components of the at least one cleaning area 37 are preferably designed to come into indirect contact with the at least one print head 08, in particular with its nozzle surface 09 and/or with its at least one contact surface 11, during the cleaning process.
  • the at least one cleaning head 31 preferably has at least one ramp 33; 34 on. More preferably, the cleaning head 31 has at least one first ramp 33 and at least one second ramp 34 .
  • the at least one cleaning element 31 can preferably be arranged in at least one first position and/or in at least one second position, the first position of the cleaning element 31 being arranged at a distance from the second position of the cleaning element 31, preferably along the cleaning direction G.
  • the at least one print head 08 and/or the at least one cleaning head 31 has at least one guide device 36.
  • This guide device 36 is preferably designed as a guide surface 36 whose surface normal has at least one component that is orthogonal to the z-direction and to the cleaning direction G.
  • the at least one guide device 36 is preferably arranged in such a way that the cleaning head 31 can be positioned within a tolerance range or in an exact position with respect to a direction oriented parallel to the x-direction and/or orthogonal to the cleaning direction G and orthogonal to the z-direction and/or is positioned.
  • the at least one guide surface 36 of a cleaning head 31 preferably borders directly on at least one sliding surface 32 of the respective cleaning head 31.
  • the at least one sliding surface 32 is spaced apart from the at least one guide surface 36, preferably with at least one further surface in between.
  • the at least one additional surface is parallel to the at least one sliding surface 32.
  • the at least one additional surface is preferably spaced apart from the plane of the surface of the at least one sliding surface 32, for example arranged below in the z-direction, preferably by at least 0.1 mm (zero point one millimeter) and/or by a maximum of 0.2 mm (zero point two millimeters) from the plane of the surface of the at least one sliding surface 32.
  • At least one ramp 33 is preferably located opposite to the cleaning direction G in front of the at least one cleaning area 37, preferably in front of the at least one fluid inlet 38 and/or in front of the at least one fluid outlet 39; 41, arranged.
  • the at least one first ramp 33 is preferably a first part of the surface of the cleaning element 31 that comes into view.
  • the at least one first ramp 33 is preferably designed as an entry ramp 33 .
  • the first ramp 33 preferably has a positive gradient, starting from an outer point of the at least one cleaning element 31 to its at least one cleaning region 37 .
  • the first ramp 33 is preferably arranged to reduce the distance between a reference point of the at least one print head 08 to be cleaned and the surface of the at least one cleaning element 31 facing it, in particular when the at least one cleaning element 31 moves in cleaning direction G.
  • the first ramp 33 has a positive gradient starting from an outer point of the at least one cleaning element 31 to its at least one cleaning region 37.
  • the reference point of the first ramp 33 is preferably a point on the first ramp 33 which is arranged perpendicular to the print head 08 to be cleaned.
  • the first ramp 33 is preferably at a first distance from a print head 08 to be cleaned, preferably from at least one exit surface 09 and/or spacing surface 11 to be cleaned, at the reference point of the first ramp 33.
  • the first ramp 33 is preferably at a second distance from a print head 08 to be cleaned, preferably from at least one exit surface 09 and/or spacer surface 11 to be cleaned, at the reference point of the first ramp 33, the second distance between the reference point of the first ramp 33 and the print head 08 to be cleaned is less than the first Distance between the reference point of the first ramp 33 and the print head 08 to be cleaned.
  • a first point of the at least one first ramp 33 near the at least one fluid supply 38 preferably has a first distance to the at least one nozzle surface 09 and/or to the at least one contact surface 11 of the at least one print head 08, while a second point of the at least one first ramp 33 remote from the at least one fluid supply 38 is preferably a second distance from the at least one nozzle surface 09 and/or from the at least one contact surface 11 of the at least one print head 08.
  • the first distance is preferably less than the second distance.
  • At least one ramp 34 is located opposite to the cleaning direction G after the at least one cleaning area 37, preferably after the at least one fluid inlet 38 and/or after the at least one fluid outlet 39; 41, arranged.
  • the at least one second ramp 34 is preferably a part of the surface of the cleaning element 31 that comes into view after the at least one cleaning area 37 .
  • the at least one second ramp 34 is preferably designed as an outlet ramp 34 .
  • the second ramp 34 preferably has a positive gradient, starting from an outer point of the at least one cleaning element 31 to its at least one cleaning region 37 .
  • the second ramp 34 is preferably arranged to increase the distance between a reference point of the at least one print head 08 to be cleaned and the surface of the at least one cleaning element 31 facing it, in particular when the at least one cleaning element 31 moves in cleaning direction G.
  • the second ramp 34 is preferred arranged to increase the distance between a reference point of the second ramp 34 and the print head 08 to be cleaned.
  • the second ramp 34 preferably has a positive gradient, starting from an outer point of the at least one cleaning element 31 to its at least one cleaning region 37 .
  • the reference point of the second ramp 34 is preferred a point of the second ramp 34, which is arranged perpendicular to the print head 08 to be cleaned.
  • the second ramp 34 preferably has a first spacing at the reference point of the second ramp 34 from a print head 08, in particular one that is to be cleaned, preferably from at least one exit surface 09 and/or spacing surface 11 that is to be cleaned.
  • the second ramp 34 is preferably at a second distance from a print head 08, in particular one to be cleaned, preferably from at least one exit surface 09 and/or spacer surface 11 to be cleaned, at the reference point of the second ramp 34, whereby the second distance between the reference point of the second ramp 34 and print head 08, in particular to be cleaned, is greater than the first distance between the reference point of the second ramp 34 and print head 08, in particular to be cleaned.
  • a first point of the at least one second ramp 34 near the at least one fluid supply 38 is preferably at a first distance from the at least one nozzle surface 09 and/or from the at least one contact surface 11 of the at least one print head 08, while a second point of the at least one second ramp 34 remote from the at least one fluid supply 38 preferably a second distance from the at least one nozzle surface 09 and/or from the at least one contact surface 11 of the at least one print head 08.
  • the first distance is preferably less than the second distance.
  • the at least one cleaning area 37 is preferably arranged between the at least one first ramp 33 and the at least one second ramp 34 .
  • the at least one first ramp 33 is arranged opposite to the cleaning direction G in front of the at least one cleaning area 37.
  • the at least one second ramp 34 is preferably arranged downstream of the at least one cleaning area 37, counter to the cleaning direction G.
  • the first ramp 33 preferably rises from an outer edge of the cleaning element 31 towards the at least one cleaning region 37 .
  • the second ramp 33 preferably rises from an outer edge of the cleaning element 31 towards the at least one cleaning region 37 .
  • the gradients of the first ramp 33 and the second ramp 34 are preferably directed in opposite directions to one another.
  • the at least one cleaning element 31 has at least one edge 51, preferably at least one tear-off edge.
  • This at least one edge 51 is preferably arranged counter to the cleaning direction G between the at least one cleaning region 37 and a rear boundary of the at least one cleaning element 31.
  • the at least one edge 51 is preferably arranged counter to the cleaning direction G between the at least one second fluid outlet 41 and a rear boundary of the at least one cleaning element 31.
  • the surface of the at least one cleaning element 31 preferably points counter to the cleaning direction G downstream of the at least one cleaning area 37, preferably downstream of the at least one first fluid outlet 39, more preferably downstream of the at least one second fluid outlet 41, more preferably downstream of the last cleaning fluid and/or Dirt and / or pressurized fluid sucking unit, a reduced height compared to the height of the surface of the at least one cleaning area 37.
  • the at least one cleaning area 37 preferably has at least the at least one fluid supply 38.
  • the surface of the at least one cleaning element 31 following the at least one cleaning area 37 is preferably lower in the vertical direction, in particular in the z-direction, than the surface of the at least one cleaning area 37.
  • the at least one cleaning area 37 is preferably opposite a surface in the z-direction of the cleaning element 31 towards the at least one edge 51, in particular in the z-direction compared to the at least one second ramp 34.
  • the at least one sliding surface 32 is preferably configured to come into direct contact with the at least one contact surface 11 counter to the cleaning direction G only in front of the at least one second fluid outlet 41, in particular due to the at least one edge 51 or second ramp 34.
  • the distance between the surface of the at least one cleaning element 31 and the surface of the at least one print head 08 facing it, opposite to cleaning direction G, in front of edge 51 is preferably smaller than the distance between the surface of the at least one cleaning element 31 and the surface of the at least one print head 08 facing it, counter to the cleaning direction G after edge 51.
  • the distance between the surface of the at least one cleaning element 31 and the surface of the at least one print head 08 facing it increases counter to the Cleaning direction G after the edge 51 by at least 5%, preferably at least 10%, and/or by a maximum of 30%, preferably a maximum of 20%, compared to the distance between the surface of the at least one cleaning element 31 and the surface of the at least one print head 08 facing it against the cleaning direction G in front of the edge 51.
  • the at least one edge 51 is arranged in the cleaning direction G after the at least one cleaning area 37, in particular after the at least one fluid suction device 41, and/or in front of the at least one second ramp 34.
  • the at least one edge 51 prevents smearing of pressurized fluid that is located on the at least one exit surface 09 at this point in time, preferably when the at least one cleaning element 31 is passing the exit surface 09 in question.
  • Downstream of the cleaning direction G the distance between the surface of the at least one cleaning element 31 and the surface of the at least one print head 08 facing the at least one cleaning area 37, in particular downstream of the second fluid outlet 41, is preferably larger than in the area of the at least one cleaning area 37.
  • the at least one edge 51 to the at least one second fluid outlet 41 is at a distance of no more than 10%, preferably no more than 5%, of the length of the at least one cleaning element 31 in the cleaning direction G.
  • the at least one edge 51 preferably also extends over the area of the at least one sliding surface 32.
  • the at least one edge 51 does not carry cleaning agent and/or pressurized fluid and/or dirt along the at least one sliding surface 32. This preferably prevents cleaning agent and/or pressure fluid and/or dirt from drying on the at least one sliding surface 32, which for example has a negative effect on the sliding function and/or is difficult to remove.
  • the at least one cleaning region 37 preferably has an area of at least 20% (twenty percent), preferably at least 30% (thirty percent), relative to the area generated by the expansion of the at least one cleaning element 31 in the cleaning direction G and orthogonal to the cleaning direction G. more preferably at least 45% (forty-five percent), and/or at most 80% (eighty percent), preferably at most 70% (seventy percent), more preferably at most 65% (sixty-five percent), of the surface of the at least one cleaning element 31 on.
  • the at least one cleaning area 37 in the surface of the at least one cleaning element 31 preferably has an area of at least 600 mm 2 (six hundred square millimeters), preferably at least 800 mm 2 (eight hundred square millimeters), more preferably at least 1000 mm 2 (one thousand square millimeters), and/ or at most 1800 mm 2 (one thousand eight hundred square millimeters), preferably at most 1600 mm 2 (one thousand six hundred square millimeters), more preferably at most 1400 mm 2 (one thousand four hundred square millimeters).
  • the cleaning head 31 preferably has the at least one fluid supply 38 and the at least one fluid discharge opening 39; 41, preferably within the at least one cleaning area 37.
  • the at least one fluid supply 38 is more preferably designed as at least one fluid supply 38 for supplying cleaning liquid.
  • the at least one fluid discharge opening 39; 41 is more preferred than at least one fluid discharge opening 39; 41 designed for cleaning liquid and / or dirt.
  • the cleaning head 31 has the at least two fluid discharge openings 39; 41, wherein in each case a first fluid discharge opening 39 is preferably designed as a fluid discharge 39 and/or wherein in each case a second fluid discharge opening 41 is preferably designed as a fluid suction device 41.
  • the at least one first fluid discharge opening 39 preferably at least partially, more preferably completely, surrounds the at least one fluid supply 38 in one plane, particularly as viewed in a plan view of the cleaning element 31.
  • the at least one cleaning element 31 preferably has the at least one fluid supply 38 with at least one outlet opening for cleaning fluid.
  • the at least one outlet opening is preferably also referred to as a fluid supply opening 38 .
  • the at least one fluid supply 38 is preferably connected to a source of cleaning agent.
  • the at least one outlet opening of the at least one fluid supply 38 is preferably arranged within the at least one cleaning area 37 .
  • Cleaning agent is preferably expelled through the at least one outlet opening of the fluid supply 38 .
  • the cleaning agent then preferably comes into direct contact with the at least one nozzle surface 09 and/or the at least one positioning gap 07 and/or the at least one contact surface 11 and wets them.
  • the at least one fluid supply 38 is preferably designed to wet the at least one contact surface 11 with cleaning fluid.
  • At least one boundary 71 of the at least one outlet opening of the at least one fluid supply 38 is preferably arranged in the plane of the at least one cleaning area 37.
  • the boundary 71 is the outermost edge of the at least one fluid supply 38.
  • the at least one boundary 71 of the at least one outlet opening is preferably elongated and/or oval and/or slot-shaped and/or designed as a groove and/or in a shape other than circular .
  • a groove preferably has at least two mutually parallel longitudinal sides.
  • a tangential line through the first boundary point of the boundary 71 of the outlet opening of the at least one fluid supply 38 is preferably parallel to the longitudinal direction.
  • a straight line through at least two centroids of the area of the at least two outlet openings preferably describes the longitudinal direction of the at least one fluid supply 38.
  • the fluid supply opening 38 in particular the at least one outlet opening of the fluid supply 38, preferably has the at least one delimitation 71 of the fluid supply opening 38 in a plane of the surface of the cleaning region 37, preferably orthogonal to the z-direction, with a centroid. More preferably, the boundary 71 of the fluid supply opening 38 has at least one first boundary point, which is arranged in alignment with the centroid with respect to the cleaning direction G.
  • the delimitation 71 of the fluid supply opening 38 preferably has at least one second delimitation point, which is arranged in alignment with the centroid with respect to a direction orthogonal to the cleaning direction G.
  • the delimitation 71 of the fluid supply opening 38 preferably has at least one third delimitation point, which is arranged on the delimitation of the fluid supply opening 38 in an extension of a distance from the first delimitation point to the centroid of the area.
  • the delimitation 71 of the fluid supply opening 38 preferably has at least a fourth delimitation point, which is arranged on the delimitation of the fluid supply opening 38 in an extension of a distance from the second delimitation point to the centroid of the area.
  • the respective first delimitation point and the second delimitation point and the third delimitation point and the fourth delimitation point are preferably at a distance greater than zero positioned spaced apart on the boundary 71 of the fluid supply port 38 .
  • the distance between the first delimitation point and the third delimitation point on the delimitation 71 of the fluid supply opening 38 is preferably less than the distance between the second delimitation point and the fourth delimitation point on the delimitation 71 of the fluid supply opening 38.
  • a longitudinal direction of the fluid supply opening 38 is preferably at least partially orthogonal to a straight line between the first delimitation point and the center of gravity of the delimitation of the fluid supply opening 38.
  • the at least one fluid supply opening 38 in particular the delimitation 71 of the fluid supply opening 38, points in the plane spanned by the x-direction and the y-direction, and/or or orthogonal to the z-direction, preferably the longitudinal direction of the fluid supply opening 38 and a transverse direction of the fluid supply opening 38 .
  • the expansion of the fluid supply opening 38 in its longitudinal direction and in its transverse direction is preferably different from one another.
  • the fluid supply opening 38, in particular the delimitation 71 of the fluid supply opening 38 preferably has a maximum extension in its longitudinal direction.
  • the extension of the fluid supply opening 38, in particular the delimitation 71 of the fluid supply opening 38 is preferably smaller in the transverse direction of the fluid supply opening 38 than in its longitudinal direction.
  • a cleaning area 37 has at least two fluid supply openings 38 each with a delimitation 71 of the respective fluid supply opening 38 in a plane of the surface of the cleaning area 37 .
  • the at least two fluid supply openings 38 each have a centroid, with the centroids of the fluid supply openings 38 preferably being arranged on a straight line.
  • the straight line of the at least two centroids of the fluid supply openings 38 is preferably arranged at least partially orthogonally to the cleaning direction G and orthogonally to the z-direction.
  • a tangent line through the first boundary point of boundary 71 of fluid supply opening 38 is preferably at least partially orthogonal to the Cleaning direction G and orthogonal to the z-direction.
  • the tangent through the first boundary point of the boundary 71 of the fluid supply opening 38 to the cleaning direction G in a positive mathematical sense of rotation, i.e. counterclockwise has a planar angle of at least 50°, preferably at least 60°, and at most 130° , preferably of at most 120°.
  • the tangential through the first boundary point of the boundary of the fluid supply opening 38 is preferably parallel to a plane which is displaced to the position of the positioning gap 07, for example along the y-direction, through the z-direction and at least one direction of the shortest boundary 71 of a respective exit surface 09, which is spanned in a plane in the x-direction and y-direction of the print head 08 to be cleaned of the relevant nozzle bar 04, which delimits the positioning gap 07.
  • the tangential through the first boundary point of boundary 71 of fluid supply opening 38 is preferably parallel to a longitudinal direction of fluid supply opening 38, in particular in the case of a fluid supply opening 38 which, for example, is elongated and/or oval and/or slot-shaped and/or as a groove and/or in another Shape is designed as circular. More preferably, the longitudinal direction of the fluid supply opening 38 is aligned parallel to at least one positioning gap 07 of the associated nozzle bar 04. The longitudinal direction of the fluid supply opening 38 is preferably located in a plane spanned by the x-direction and the y-direction.
  • the fluid supply opening 38 is preferably designed as a groove and/or elongated and/or oval and/or slot-shaped, preferably in the plane orthogonal to the z-direction.
  • a groove preferably has at least two mutually parallel longitudinal sides.
  • the longitudinal direction of the at least one fluid supply 38 has a preferably planar angle to the cleaning direction G, in particular an opening angle 47, which is preferably acute-angled or obtuse-angled.
  • the longitudinal direction of the at least one fluid supply 38 preferably points to the cleaning direction G in a positive mathematical direction of rotation, which means counterclockwise preferably a flat angle, in particular an opening angle 47 of at least 50° (fifty degrees), preferably at least 60° (sixty degrees), more preferably at least 70° (seventy degrees) and/or at most 130° (one hundred and thirty degrees), preferably at most 120° (one hundred and twenty degrees), more preferably at most 110° (one hundred and ten degrees).
  • the opening angle 47 is 106° (one hundred and six degrees).
  • the opening angle 47 is preferably not equal to 90° (ninety degrees).
  • the longitudinal direction of the at least one fluid supply 38 is inclined relative to the cleaning direction G.
  • the inclined position of the at least one fluid supply 38 preferably corresponds to an at least partial oblique overlap of the at least two print heads 08 of the at least one row.
  • This preferably enables cleaning agent to penetrate optimally into the at least one positioning gap 07.
  • this means, for example, that the longitudinal direction of the at least one fluid supply opening 38 is at an identical angle to the longitudinal direction of the at least one positioning gap 07, preferably by the opening angle 47 with respect to the cleaning direction G, has.
  • opening angle 47 preferably corresponds to the at least partial oblique overlap in the x-direction of the at least two print heads 08 arranged next to one another, in particular adjacent to one another. This shows, for example, that opening angle 47 is preferably acute-angled or obtuse.
  • This acute-angled or obtuse design of the opening angle 47 preferably depicts the at least partially oblique overlap in the x-direction of the at least two print heads 08 arranged next to one another and/or the alignment of the longitudinal direction of the at least one positioning gap 07.
  • the fluid supply opening 38 is aligned parallel to at least one positioning gap 07 of the associated nozzle bar 04. More preferably, the fluid supply opening 38 is preferably parallel to the at least one positioning gap 07 between at least two print heads 08, which in particular are to be cleaned, preferably within a row in the y-direction of a nozzle bar 04 aligned. More preferably, the tangential through the first boundary point of boundary 71 of fluid supply opening 38 is aligned parallel to at least one positioning gap 07 of associated nozzle bar 04. This enables, for example, optimal penetration of cleaning agents into the positioning gap 07.
  • a central axis 53 of the at least one cleaning element 31 is preferably an axis parallel to the cleaning direction G, which divides the at least one cleaning element 31, preferably the at least one cleaning region 37, into two preferably equally wide parts.
  • the at least two sliding surfaces 32 of the at least one cleaning element 31 are preferably each at the same distance from a plane spanned by the central axis 53 and the z-direction.
  • a projection plane is preferably arranged orthogonally to the cleaning direction G. This means that the cleaning direction G is preferably a normal to the projection plane.
  • the projection plane is preferably spanned orthogonally to the cleaning direction G by the x-direction and orthogonally to the cleaning direction G by the z-direction.
  • the central axis 53 is thus preferably punctiform in the projection plane.
  • the at least one sliding surface 32 is preferably projected into the projection plane, preferably spanned by the x-direction and the z-direction, ie into the projection plane orthogonal to the cleaning direction G.
  • the at least one sliding surface 32 has in the projection plane, which is preferably arranged orthogonally to the cleaning direction G, at least one first delimitation point 61; 62; 63; 64 on which boundary point 61; 62; 63; 64 preferably has the shortest distance of all points of the at least one sliding surface 32 to the central axis 53 of the at least one cleaning element 31.
  • the plane spanned by the central axis 53 and the z-direction preferably divides the at least one fluid supply 38, preferably its boundary 71, into two preferably equally wide parts.
  • the projection of the at least one fluid supply 38, preferably its boundary 71 is divided into two parts of equal width in the projection plane by the projection of a plane spanned by the central axis 53 and the z-direction.
  • two outermost delimitation points 58; 59 of the delimitation 71 of the fluid supply 38 are arranged in the projection plane with mirror symmetry to one another with respect to the plane spanned by the z-direction and the central axis 53 .
  • the two outermost delimitation points 58; 59 of the boundary 71 of the at least one fluid supply 38 to the plane spanned by the z-direction and the central axis 53 at the same distance.
  • a projection of the at least one fluid supply 38 preferably its at least one outlet opening, in the projection plane preferably at least partially overlays the projection of the at least one sliding surface 32 in the projection plane.
  • the y-direction is preferred.
  • the projection of the at least one fluid supply 38 and the projection of the at least one sliding surface 32 are preferably arranged to overlap one another. In particular, the projection of the at least one fluid supply 38 engages with the projection of the at least one sliding surface 32.
  • the at least one outermost boundary point 58; 59 of the boundary 71 of the at least one fluid supply 38 is preferably at a greater distance from the plane spanned by the central axis 53 and the z-direction than the at least one boundary point 61; 62; 63; 64 of the sliding surface 32, which has the minimum distance of all points of the sliding surface 32 to the plane.
  • the outermost limit point 58; 59 of the fluid supply 38 is preferably arranged on the same side of the plane spanned by the z-direction and the central axis 53 as the relevant boundary point 61; 62; 63; 64 of the sliding surface 32.
  • At least one point of the at least one fluid supply 38 preferably at least one limiting point 58; 59 of the boundary 71 of the fluid supply 38, more preferably at least the at least one outermost boundary point 58; 59 of the delimitation 71 of the fluid supply 38, arranged in the projection plane farther from the plane spanned by the z-direction and the central axis 53 than the at least one delimitation point 61; 62; 63; 64 of the at least one sliding surface 32 at the shortest distance from the at least one plane spanned by the z-direction and the central axis 53.
  • the relevant point of the at least one fluid supply 38 preferably at least the outermost boundary point 58; 59 of the boundary 71 of the at least one fluid supply 38, perpendicular to a point on the at least one contact surface 11 of the at least one print head 08, preferably when the at least one cleaning element 31 is placed against the print head 08.
  • This advantageously enables vertical wetting of the at least one contact surface 11 with cleaning agent, which preferably improves the cleaning efficiency of the at least one contact surface 11 .
  • Cleaning agent is advantageously applied to the contact surface 11 to be cleaned at a right angle.
  • a uniform distribution of the cleaning agent up to the outer edge of the at least one contact surface 11 is advantageously achieved.
  • the at least one fluid supply 38 preferably its boundary 71, preferably has at least one point, in particular the outermost boundary point 58; 59, which has a shortest distance from the at least one contact surface 11. This point, in particular the outermost boundary point 58; 59, during the cleaning process in the z-direction aligned with the at least one contact surface 11, so for example vertically below the at least one contact surface 11.
  • the formation of the at least one fluid supply 38 ensures that the at least one contact surface 11 is wetted with cleaning agent, preferably vertically, and thus undergoes optimal cleaning.
  • the entire width of the at least one print head 08 is preferably wetted with cleaning agent.
  • the at least one fluid supply 38 In a plan view of the at least one cleaning element 31, the at least one fluid supply 38, preferably the boundary 71 of the at least one fluid supply 38, has its greatest longitudinal extension in a direction unequal to the cleaning direction G.
  • the at least one fluid supply 38 preferably the at least one outlet opening for cleaning fluid, more preferably the sum of all outlet openings projected onto the projection plane, more preferably the boundary 71 of the at least one fluid supply 38, preferably points orthogonally to the cleaning direction G in the projection plane, more preferably in the area of the surface of the at least one cleaning element 31 at the position of the at least one fluid supply 38, has a greater longitudinal extension than in the cleaning direction G.
  • the longitudinal extension preferably takes place in the x-direction, in particular when projecting into the projection plane spanned by the x-direction and the z-direction.
  • the at least one fluid supply 38 in particular the at least one outlet opening and/or all outlet openings projected onto the projection plane, preferably has a length in the projection plane orthogonal to the cleaning direction G, which length is the length of the at least one nozzle surface 09 orthogonal to the cleaning direction G, in particular in the projection plane.
  • the extent of the at least one fluid supply 38 is orthogonal to the cleaning direction G, i.e. preferably its longitudinal extent, is at least 30 mm (thirty millimeters), preferably at least 35 mm (thirty-five millimeters), more preferably at least 40 mm (forty millimetres), for example 39 mm (thirty nine millimetres), and/or a maximum of 50 mm (fifty millimetres), more preferably a maximum of 45 mm (forty five millimetres).
  • the at least one cleaning element 31 preferably has at least one, more preferably at least two, fluid outlet 39; 41 on.
  • the at least one cleaning element 31 preferably has the at least one first fluid outlet 39 .
  • the at least one first fluid discharge 39 is preferably also referred to above and below as fluid discharge 39 or first fluid discharge opening 39 .
  • the at least one cleaning element 31 preferably has the at least one second fluid outlet 41 .
  • the at least one second fluid discharge 41 is preferably also referred to above and below as fluid suction 41 or second fluid discharge opening 41 .
  • the at least one cleaning element 31 preferably has the at least one first fluid discharge 39 with at least one discharge opening for discharging cleaning fluid and/or dirt and/or pressurized fluid.
  • the at least one discharge opening is preferably also referred to as the first fluid discharge opening 39 .
  • the at least one first fluid drain 39 is preferably designed to drain, preferably suction, cleaning fluid and/or dirt and/or pressurized fluid.
  • the fluid discharge 39 is preferably arranged at least partially around the fluid supply opening 38 in at least one plane, in particular when viewed in a top view of the cleaning element 31. More preferably, the fluid discharge 39 is arranged in the at least one plane completely around the fluid supply opening 38. Said plane is preferably spanned by the x-direction and the y-direction.
  • the at least one discharge opening of the at least one first fluid discharge 39 preferably encloses the at least one outlet opening of the at least one fluid supply 38 in the surface area of the at least one cleaning element 31, preferably within the at least one cleaning area 37.
  • cleaning fluid and/or dirt and/or pressurized fluid is preferably already removed and/or loosened in front of and to the side of the at least one fluid supply 38, as a result of which optimal cleaning is preferably achieved.
  • Pressure fluid and/or dirt and/or particles are preferably already removed from the surface of the print head 08, in particular its nozzle surface 09 and/or contact surface 11, by the discharge by means of the at least one fluid discharge 39, counter to the cleaning direction G in front of the at least one fluid supply 38. Easily removable components are thus advantageously removed quickly and easily.
  • the fluid discharge 39 is designed so that cleaning agents and/or dirt and/or particles, for example, which adhere and/or are residues on the respective exit surface 09 and/or the respective contact surface 11 of a print head 08 in question, can be removed and/or removed.
  • the at least one first fluid outlet 39 also called fluid outlet 39, preferably has at least one boundary 72 of the first fluid outlet 39, preferably with at least two boundary points 61; 62; 63; 64; 66; 67, on.
  • the delimitation 72 of the at least one discharge opening of the at least one first fluid discharge 39 preferably has at least one first delimitation point 61; 63 and at least one second delimitation point 62; 64 on.
  • the boundary 72 is preferably the outermost edge of the at least one fluid drain 39 -Direction, with a centroid on.
  • the first fluid discharge 39 preferably has the at least one boundary 72 of the at least one discharge opening of the at least one first Fluid discharge 39, preferably with the centroid on.
  • the boundary 72 is preferably arranged in a plane of the surface of the at least one cleaning region 37, preferably orthogonally to the z-direction.
  • the boundary 72 of the fluid discharge 39 has at least one fifth boundary point, which is arranged in alignment with the centroid of the boundary 72 of the fluid discharge 39 with respect to the cleaning direction G.
  • the boundary 72 of the fluid discharge 39 preferably has at least one sixth boundary point, which is arranged in alignment with the centroid with respect to a direction orthogonal to the cleaning direction G.
  • the delimitation 72 of the fluid discharge 39 preferably has at least one seventh delimitation point, which is arranged on the delimitation 72 of the fluid discharge 39 in an extension of a distance from the fifth delimitation point to the centroid of the area.
  • the delimitation 72 of the fluid discharge 39 preferably has at least one eighth delimitation point, which is arranged on the delimitation of the fluid discharge 39 in an extension of a distance from the sixth delimitation point to the centroid of the area.
  • the respective fifth delimitation point and the sixth delimitation point and the seventh delimitation point and the eighth delimitation point are preferably positioned at a distance greater than zero from one another on the delimitation 72 of the fluid discharge 39 .
  • the distance between the fifth delimitation point and the seventh delimitation point on the delimitation 72 of the fluid discharge 39 is preferably less than the distance between the sixth delimitation point and the eighth delimitation point on the delimitation 72 of the fluid discharge 39.
  • a longitudinal direction of the fluid discharge 39 is preferably at least partially orthogonal to a straight line between the fifth boundary point and the center of gravity of the boundary 72 of the fluid drain 39.
  • the longitudinal direction is parallel to the distance from the sixth boundary point to the eighth boundary point.
  • the at least one fluid discharge 39, in particular the delimitation 72 of the fluid discharge 39, in the plane spanned by the x-direction and the y-direction, and/or orthogonal to the z-direction preferably the longitudinal direction of the fluid discharge 39 and a transverse direction of the fluid discharge 39.
  • the expansion of the fluid discharge 39 in its longitudinal direction and in its transverse direction is preferably different from one another.
  • the fluid discharge 39 in particular the delimitation 72 of the fluid discharge 39, preferably has a maximum extension in its longitudinal direction.
  • the extent of the fluid discharge 39, in particular the boundary 72 of the fluid discharge 39, is preferably smaller in the transverse direction of the fluid discharge 39 than in its longitudinal direction.
  • a tangential through the fifth boundary point of boundary 72 of the at least one discharge opening of at least one first fluid discharge 39 is preferably parallel to the longitudinal direction.
  • a straight line through at least two centroids of the at least two discharge openings preferably describes the longitudinal direction of the at least one first fluid discharge 39.
  • a tangential through the fifth boundary point of boundary 72 of fluid discharge 39 is at least partially orthogonal to the cleaning direction G and orthogonal to the z-direction and additionally or alternatively parallel to the corresponding tangential through the first delimitation point of the delimitation 72 of the respective fluid supply opening 38.
  • the fluid discharge 39 is preferably at least partially orthogonal to the cleaning direction G and orthogonal to the z-direction and/or aligned parallel to at least one positioning gap 07 of the associated nozzle bar 04.
  • the tangential line through the fifth boundary point of boundary 72 of fluid discharge 39 is preferably aligned parallel to the at least one positioning gap 07 of the associated nozzle bar 04, in particular in a plane of the surface of cleaning area 37.
  • the tangential line preferably points through the fifth boundary point of boundary 72 of fluid discharge 39, which is at least partially orthogonal to the cleaning direction G and orthogonal to the z-direction, to the cleaning direction G in a positive mathematical Sense of rotation, which means counterclockwise, has a planar angle of at least 50°, preferably at least 60°, and at most 130°, preferably at most 120°.
  • the tangential through the fifth boundary point of the boundary 72 of the fluid discharge 39 is preferably parallel to a longitudinal direction of the fluid discharge 39, in particular in the case of a fluid discharge 39 which, for example, is elongated and/or oval and/or slot-shaped and/or as a groove and/or trapezoidal and/or or formed in a shape other than circular.
  • the fluid discharge 39 is designed, preferably in the plane orthogonal to the z-direction, in the shape of a trapezoid and/or groove and/or as a parallelogram.
  • the longitudinal direction of the at least one first fluid outlet 39 is preferably oriented parallel to the at least one positioning gap 07. More preferably, the longitudinal direction of the fluid discharge 39 is aligned parallel to at least one positioning gap 07 of the associated nozzle bar 04.
  • the longitudinal direction of the at least one first fluid discharge 39 preferably has a preferably planar angle to the cleaning direction G, in particular a discharge angle 48 which is preferably acute-angled or obtuse-angled.
  • the longitudinal direction of the fluid discharge 39 preferably points to the cleaning direction G in a positive mathematical sense of rotation, i.e. counterclockwise, at a preferably level angle, in particular a discharge angle 48, of at least 50° (fifty degrees), preferably at least 60° (sixty degrees).
  • the take-off angle 48 is 106° (one hundred and six degrees).
  • the discharge angle 48 is not equal to 90° (ninety degrees). In other words, this means, for example, that the longitudinal direction of the at least one fluid discharge 39 has an identical inclination to the longitudinal direction of the at least one positioning gap 07, preferably at the discharge angle 48 with respect to the cleaning direction G.
  • the discharge angle 48 thus corresponds to the at least partial oblique overlap in the x-direction of the at least two print heads 08 arranged next to one another, in particular adjacent to one another.
  • the discharge angle 48 is preferably acute-angled or obtuse.
  • This acute-angled or obtuse design of the discharge angle 48 preferably reflects the at least partially oblique overlap in the x-direction of the at least two print heads 08 arranged next to one another and/or the alignment of the longitudinal direction of the at least one positioning gap 07.
  • the longitudinal direction of the at least one first fluid discharge 39 is inclined relative to the cleaning direction G.
  • the inclined position of the at least one first fluid discharge 39 preferably corresponds to an at least partial inclined overlap of the at least two print heads 08 of the at least one row. This preferably enables the optimal removal of pressurized fluid and/or dirt and/or cleaning agent from the at least one positioning gap 07.
  • the projection of the at least one first fluid outlet 39 is spanned into the projection plane by the projection of the plane spanned by the central axis 53 and the z- Direction divided into two parts of equal width.
  • two delimitation points 61; 62; 63; 64; 66; 67 of the boundary 72 of the first fluid discharge 39 preferably two boundary points 66; 67 at a greater distance from the plane spanned by the z-direction and the central axis 53 than a first delimitation point 61; 63 and a second limit point 62; 64, in the projection plane mirror-symmetrical to each other with respect to the plane spanned by the z-direction and the central axis 53.
  • a delimitation point 61; 62; 66 is arranged on a first side relative to the plane, while the delimitation point 63; 64; 67 is located on the second side relative to the plane.
  • a projection of the at least one first fluid outlet 39, in particular its at least one outlet opening, more preferably the boundary 72 of the first fluid outlet 39, in the plane of projection preferably at least partially overlays the projection of the at least one sliding surface 32 in the plane of projection.
  • the projection of the at least one first fluid outlet 39, preferably the boundary 72 of the first fluid outlet 39, and the projection of the at least one sliding surface 32 are preferably arranged so that they overlap one another.
  • the projection of the at least one first fluid outlet 39, preferably the boundary 72 of the first fluid outlet 39 engages in the projection of the at least one sliding surface 32.
  • An at least partial superimposition in the projection plane preferably describes that the projection of the first object, for example the at least one first fluid discharge 39, and the projection of the second object, for example the at least one sliding surface 32, overlap at least one point in the projection plane. At least those areas of the first object and the second object which are arranged in alignment with one another with respect to the cleaning direction G preferably overlap.
  • At least one point of the at least one first fluid outlet 39 preferably at least one delimitation point 66; 67 of the boundary 72 of the first fluid outlet 39, in the projection plane, preferably spanned by the x-direction and the z-direction, arranged further away from the plane spanned by the z-direction and the central axis 53 than the at least one boundary point 61; 62; 63; 64 of the at least one sliding surface 32 with the shortest distance to the plane spanned by the z-direction and the central axis 53.
  • this improves the efficiency of the discharge of pressurized fluid and/or dirt and/or cleaning agent in the area of the at least one contact surface 11.
  • the extent of the at least one first fluid discharge 39, in particular its boundary 72, orthogonal to the cleaning direction G, i.e. preferably its longitudinal extent, is at least 37 mm (thirty-seven millimeters), preferably at least 40 mm (forty millimeters), more preferably at least 45 mm ( forty-five millimeters), and/or a maximum of 60 mm (sixty millimeters), more preferably a maximum of 50 mm (fifty millimeters).
  • the at least one first fluid discharge 39 in particular the at least one outlet opening and/or all outlet openings projected onto the projection plane, preferably has a length in the projection plane orthogonal to the cleaning direction G, which length is the length of the at least one nozzle surface 09 orthogonal to the cleaning direction G. especially in the projection plane.
  • the delimitation 72 of the at least one discharge opening of the at least one first fluid discharge 39 preferably has at least one first delimitation point 61; 63, which in the projection of the at least one first fluid discharge 39 in the plane of projection on the at least one boundary point 61; 63 of the at least one sliding surface 32 is arranged at the shortest distance from the plane spanned by the z-direction and the central axis 53.
  • the projection plane is preferably arranged orthogonally to the cleaning direction G, ie preferably spanned by the x-direction and the z-direction.
  • the at least one first delimitation point 61; 63 of the boundary 72 of the first fluid discharge 39 against the cleaning direction G in front of the outer boundary point 58; 59 of the at least one fluid supply 38 is arranged.
  • the relevant boundary points 58; 59; 61; 63 arranged on the same side of the plane spanned by the z-direction and the central axis 53 .
  • the boundary 72 of the at least one discharge opening of the at least one first fluid discharge 39 at least one second boundary point 62; 64, which in the projection of the at least one first fluid discharge 39 in the plane of projection on the at least one boundary point 62; 64 of the at least one sliding surface 32 is arranged at the shortest distance from the plane spanned by the z-direction and the central axis 53.
  • the at least one second delimitation point is 62; 64 of the boundary 72 of the first fluid discharge 39 against the cleaning direction G after the outer boundary point 58; 59 of the at least one fluid supply 38 is arranged.
  • the relevant boundary points 58; 59; 62; 64 arranged on the same side of the plane spanned by the z-direction and the central axis 53 .
  • the delimitation 72 of the at least one discharge opening of the at least one first fluid discharge 39 preferably has at least one further delimitation point 66; 67, which is at a greater distance from the plane spanned by the z-direction and the central axis 53 than the first delimitation point 61; 63 and the second delimitation point 62; 64 has.
  • the at least one further delimitation point 66; 67 a maximum distance of all boundary points of the boundary 72 of the at least one discharge opening from the plane spanned by the z-direction and the central axis 53.
  • the at least one further delimitation point is preferably 66; 67 along the boundary 72 of the at least one discharge opening, ie preferably along the extent of the first fluid discharge 39 in the cleaning direction G, between the first boundary point 61; 63 and the second delimitation point 62; 64 arranged.
  • the boundary 72 of the at least one first fluid discharge 39 is preferably along the boundary 72 from the at least one first boundary point 61; 63 to the at least one second boundary point 62; 64 curved.
  • the center of curvature is preferably arranged within the cleaning area 37 .
  • the at least a boundary 72 between the first and second boundary points 61; 62; 63; 64 a convex shape.
  • the boundary 72 of the at least one first fluid discharge 39 is preferably between the at least one first boundary point 61; 63 and the at least one second boundary point 62; 64, which are preferably arranged one behind the other in the cleaning direction G and/or which are preferably arranged on the same side of the plane spanned by the z-direction and the central axis 53, are arcuate and/or have a circular segment and/or have a convex curvature .
  • the function of the boundary 72 between the at least one first boundary point 61; 63 and the at least one second boundary point 62; 64 which are preferably arranged one behind the other in the cleaning direction G and/or which are preferably arranged on the same side of the plane spanned by the z-direction and the central axis 53.
  • the design of the first fluid outlet 39 in particular the design of the boundary 72 of the at least one outlet opening of the at least one first fluid outlet 39, preferably results in high fluid velocities within the at least one first fluid outlet 39, which preferably facilitates cleaning and/or the removal of cleaning agent and/or pressurized fluid and/or dirt.
  • a flow path of the fluid discharge 39 is created which has as few turbulences as possible.
  • the boundary 72 of the at least one fluid outlet 39 is preferably configured in such a way that, in the projection plane, all points of the at least one sliding surface 32 in the x-direction, i.e. preferably orthogonal to the cleaning direction G, extend from at least one boundary point of the boundary 72 between the first boundary point 61; 63 and the further delimitation point 66; 67 are superimposed.
  • At least one delimitation point of the delimitation 72 is preferably arranged perpendicular to each point of the contact surface 11 along a straight line in the x-direction.
  • an optimal discharge in the area of at least one contact surface 11 is achieved.
  • the boundary 72 of the at least one fluid outlet 39 along the cleaning direction G is in contact with two spaced-apart sliding surfaces 32, preferably with at least one sliding surface 32 in front of and behind the plane spanned by the z-direction and the central axis 53 the boundary 72 of the at least one fluid discharge 39 to the at least two sliding surfaces 32 each have a first and a second boundary point 61; 62; 63; 64 on.
  • the two delimitation points 66; 67 preferably wherein the delimitation points have a maximum distance between the delimitation points of the delimitation 72 and the plane spanned by the z-direction and the central axis 53, arranged offset to one another along the cleaning direction G.
  • the area which encloses the at least one fluid discharge 39, preferably its at least one discharge opening, within the at least one cleaning region 37, i.e. which surface is delimited by the at least one discharge opening, is preferably at least 500 mm 2 (five hundred square millimeters), preferably at least 800 mm 2 (eight hundred square millimeters), more preferably at least 1000 mm 2 (one thousand square millimeters), and/or at most 2000 mm 2 (two thousand square millimeters), preferably at most 1800 mm 2 (one thousand eight hundred square millimeters), more preferably at most 1500 mm 2 (one thousand five hundred square millimeters ), on.
  • this is the area which is defined by the boundary 72 of FIG at least one fluid drain 39 is enclosed.
  • the at least one cleaning element 31 preferably has the at least one second fluid discharge 41, also called fluid suction 41, with at least one discharge opening for discharging cleaning fluid and/or dirt and/or pressurized fluid.
  • the at least one discharge opening is preferably also referred to as the second fluid discharge opening 41 .
  • the at least one second fluid drain 41 is preferably designed to drain, preferably suction, cleaning fluid and/or dirt and/or pressurized fluid.
  • the at least one fluid suction device 41 is designed so that cleaning agents and/or dirt and/or particles, for example, which adhere and/or are residues on the respective exit surface 09 and/or the respective contact surface 11 of a print head 08 in question, can be removed and/or removed.
  • the at least one fluid suction device 41 can be and/or is pressurized, for example, with a strong negative pressure, for example at least 600 mbar (six hundred millibars) and/or a maximum of 800 mbar (eight hundred millibars), for example 750 mbar (seven hundred and fifty millibars).
  • the at least one second fluid outlet 41 is preferably arranged in a direction opposite to the cleaning direction G after the at least one fluid inlet 38 and after the at least one first fluid outlet 39.
  • the fluid suction device 41 is preferably designed to remove at least such cleaning fluid and/or such dirt as is left over after at least one suction device by means of the at least one fluid discharge device 39.
  • the at least one fluid suction device 41 is preferably designed as a groove and/or slit, preferably as a relatively narrow slit.
  • the fluid suction 41 preferably has at least one boundary 73 of the fluid suction 41 in a plane of the surface of the cleaning area 37, preferably orthogonal to the z-direction, with a centroid.
  • the boundary is 73 preferably the outermost edge of the at least one fluid suction device 41.
  • the boundary 73 of the fluid suction 41 preferably has at least one ninth boundary point, which is arranged in alignment with the centroid of the boundary 73 of the fluid suction 41 with respect to the cleaning direction G.
  • the delimitation 73 of the fluid suction device 41 preferably has at least a tenth delimitation point, which is arranged in alignment with the centroid with respect to a direction orthogonal to the cleaning direction G.
  • the boundary 73 of the fluid suction 41 preferably has at least one eleventh boundary point, which is arranged on the boundary 73 of the fluid suction 41 in extension of a distance from the ninth boundary point to the centroid.
  • the boundary 73 of the fluid suction 41 preferably has at least a twelfth boundary point, which is arranged on the boundary 73 of the fluid suction 41 in extension of a distance from the tenth boundary point to the centroid.
  • the ninth delimitation point and the tenth delimitation point and the eleventh delimitation point and the twelfth delimitation point are preferably positioned at a distance greater than zero from one another on the delimitation 73 of the fluid suction device 41 .
  • the distance between the ninth boundary point and the eleventh boundary point on boundary 73 of fluid suction 41 is preferably less than the distance between the tenth boundary point and the twelfth boundary point on boundary 73 of fluid suction 41.
  • a longitudinal direction of fluid suction 41 is preferably at least partially orthogonal to a straight line between the ninth boundary point and the center of gravity of boundary 73 of fluid suction 41.
  • the at least one fluid suction 41, in particular boundary 73 of fluid suction 41 points in the plane spanned by the x-direction and the y-direction , and/or orthogonal to the z-direction, preferably the longitudinal direction of the fluid suction 41 and a transverse direction of the fluid suction 41 .
  • the expansion of the fluid suction 41 is preferred in its longitudinal direction and in its transverse direction different from each other.
  • the fluid suction 41, in particular the delimitation 73 of the fluid suction 41 preferably has a maximum extent in its longitudinal direction.
  • the longitudinal direction is parallel to the distance from the tenth boundary point to the twelfth boundary point.
  • the extent of the fluid suction 41, in particular the boundary 73 of the fluid suction 41, is preferably smaller in the transverse direction of the fluid suction 41 than in its longitudinal direction.
  • the extension of the at least one fluid suction device 41 in its longitudinal direction is preferably at least five times as large, more preferably at least ten times as large, more preferably at least fifteen times as large, more preferably at least twenty times as large as in its transverse direction.
  • the minimum distance between the ninth boundary point and the eleventh boundary point of fluid suction 41 is preferably less than the minimum distance between the fifth boundary point and the seventh boundary point of fluid drainage 39; the distance is preferably at most half as large, more preferably at most one-fifth as large.
  • the extent of the at least one fluid suction 41 in its transverse direction is preferably less than the extent of the at least one fluid discharge 39 in its transverse direction; the extent of the at least one fluid suction 41 is preferably at most half as large, more preferably at most one-fifth as large as the expansion of the at least one fluid discharge 39 in its transverse direction.
  • the boundary 73 of the fluid suction 41 preferably has at least two boundary points 68; 68, which have the greatest possible distance from each other of all boundary points of boundary 73 of fluid suction 41.
  • the greatest possible distance between two boundary points 68; 69 of the boundary 73 of the fluid suction device 41 to one another preferably has a minimum length of preferably at least 35 mm (millimeters), in particular of at least 40 mm, more preferably of at least 45 mm, and/or a maximum length of preferably at most 60 mm, in particular at most 55 mm, more preferably at most 50 mm.
  • the greatest possible distance between two boundary points 68; 69 of the boundary 73 of the fluid suction device 41 have a minimum length in relation to one another, which is greater than at least one boundary of an exit surface 09 in question, in particular one that is to be cleaned, of a relevant print head 08 in a direction that is oriented parallel to the minimum length of the fluid suction device 41. More preferably, the greatest possible distance between two boundary points 68; 69 of the boundary 73 of the fluid suction device 41 have a minimum length in relation to one another, which is greater than at least one boundary of an exit surface 09 in question, in particular one that is to be cleaned, of a print head 08 in question in the x-direction.
  • a tangential through the ninth boundary point of boundary 73 of fluid suction 41 is preferably positioned at least partially orthogonally to cleaning direction G and orthogonally to the z-direction and alternatively or additionally parallel to the corresponding tangential through the first boundary point of boundary 73 of fluid supply opening 38. Additionally or alternatively, the fluid suction device 41 is preferably positioned at least partially orthogonally to the cleaning direction G and orthogonally to the z-direction and parallel to the positioning gap 07.
  • the tangential line through the ninth boundary point of boundary 73 of fluid suction 41 is preferably aligned parallel to the at least one positioning gap 07 of the associated nozzle bar 04, in particular in a plane of the surface of cleaning area 37.
  • the tangential line preferably points through the ninth boundary point of boundary 73 of fluid suction 41, which is at least partially orthogonal to the cleaning direction G and orthogonal to the z-direction, to the cleaning direction G in a positive mathematical sense of rotation, i.e. counterclockwise, at a planar angle of at least 50°, preferably at least 60° , and at most 130°, preferably at most 120°.
  • the longitudinal direction of the at least one second fluid outlet 41 preferably has a preferably planar angle to the cleaning direction G, in particular a suction angle 49, which is preferably at an acute angle or is obtuse.
  • the longitudinal direction of the fluid suction device 41 points to the cleaning direction G in a positive mathematical sense of rotation, i.e.
  • a suction angle 49 of at least 50° (fifty degrees), preferably at least 60° (sixty degrees). degrees), more preferably at least 70° (seventy degrees) and/or at most 130° (one hundred and thirty degrees), preferably at most 120° (one hundred and twenty degrees), more preferably at most 110° (one hundred and ten degrees).
  • the extraction angle 49 is 106° (one hundred and six degrees).
  • the extraction angle 49 is preferably not equal to 90° (ninety degrees).
  • the tangential through the ninth boundary point of boundary 73 of fluid suction 41 is preferably parallel to a longitudinal direction of fluid suction 41.
  • the longitudinal direction of fluid suction 41 is aligned parallel to the at least one positioning gap 07 of the associated nozzle bar 04.
  • suction angle 49 therefore preferably corresponds to the at least partial oblique overlap in the x-direction of the at least two print heads 08 arranged next to one another, in particular adjacent to one another. This shows, for example, that suction angle 49 is preferably acute-angled or obtuse.
  • This acute-angled or obtuse design of suction angle 49 preferably reflects the at least partially oblique overlap in the x-direction of the at least two print heads 08 arranged next to one another and/or the alignment of the longitudinal direction of the at least one positioning gap 07.
  • the longitudinal direction of the at least one second fluid discharge 41 is inclined relative to the cleaning direction G.
  • the inclined position of the at least one second fluid outlet 41 preferably corresponds to an at least partial inclined overlap of the at least two print heads 08 of the at least one row. This preferably enables an optimal removal of pressurized fluid and/or dirt and/or cleaning agent the at least one positioning gap 07.
  • the projection of the at least one second fluid outlet 41 is spanned into the projection plane by the projection of the plane spanned by the central axis 53 and the z- Direction divided into two parts of equal width.
  • the two outermost boundary points 68; 69 of the delimitation 73 of the second fluid discharge 41 are arranged in the projection plane with mirror symmetry to one another with respect to the plane spanned by the z-direction and the central axis 53 .
  • the two outermost delimitation points 68; 69 of the boundary 73 of the at least one second fluid outlet 41 to the plane spanned by the z-direction and the central axis 53 at the same distance.
  • the projection of the at least one second fluid outlet 41, preferably the boundary 73 of the second fluid outlet 41, and the projection of the at least one sliding surface 32 are preferably arranged so that they overlap one another.
  • the projection of the at least one second fluid outlet 41, preferably the boundary 73 of the second fluid outlet 41 engages in the projection of the at least one sliding surface 32.
  • At least one point of the at least one second fluid outlet 41 preferably at least one boundary point 68; 69 of the delimitation 73 of the second fluid discharge 41, arranged in the projection plane farther from the plane spanned by the z-direction and the central axis 53 than the at least one delimitation point 61; 62; 63; 64 of the at least one sliding surface 32 with the shortest distance to the at least one central axis 53.
  • At least one point of the at least one second fluid outlet 41 preferably at least one delimitation point 68; 69 of the boundary 73 of the second fluid discharge 41, located further away from the plane spanned by the z-direction and the central axis 53 in the projection plane than the at least one boundary point of the at least one sliding surface 32 with the greatest distance from the at least one central axis 53.
  • the formation of the at least one second fluid discharge 41 enables an improvement in the efficiency of the discharge of pressurized fluid and/or dirt and/or cleaning agent in the area of the at least one contact surface 11.
  • the extent of the at least one second fluid discharge 41, in particular its boundary 73, orthogonal to the cleaning direction G, i.e. preferably its longitudinal extent, is at least 47 mm (forty-seven millimeters), preferably at least 50 mm (fifty millimeters), and/or at most 60 mm (sixty millimeters), more preferably a maximum of 55 mm (fifty-five millimeters).
  • the at least one second fluid outlet 41 in particular the at least one outlet opening and/or all outlet openings projected onto the projection plane, preferably has a length in the projection plane orthogonal to the cleaning direction G, which length is the length of the at least one nozzle surface 09 orthogonal to the cleaning direction G. especially in the projection plane.
  • the tangentials through the first boundary point of boundary 71 of fluid supply opening 38 and/or the tangentials through the fifth boundary point of boundary 72 of fluid discharge 39 and/or the tangentials through the ninth boundary point of boundary 73 of fluid suction 41 are assigned the cleaning direction G in a positive mathematical sense of rotation, a planar angle of at least 50° (fifty degrees), preferably at least 60° (sixty degrees), more preferably at least 70° (seventy degrees) and/or at most 130° (one hundred and thirty degrees). ), preferably not more than 120° (one hundred and twenty degrees), more preferably not more than 110° (one hundred and ten degrees), on.
  • the longitudinal direction of the fluid supply opening 38 and/or the longitudinal direction of the fluid discharge 39 and/or the longitudinal direction of the fluid suction device 41 has a planar angle of at least 50° (fifty degrees), preferably of at least 60, to the cleaning direction G in a positive mathematical direction of rotation ° (sixty degrees), more preferably at least 70° (seventy degrees) and/or at most 130° (one hundred and thirty degrees), preferably at most 120° (one hundred and twenty degrees), more preferably at most 110° (one hundred and ten degrees). .
  • the at least one cleaning element 31 preferably has at least one wiper 52.
  • the at least one cleaning element 31 preferably has the at least one wiper 52 after the at least one cleaning region 37.
  • the at least one cleaning element 31 has at least one spatial area 54 in which at least one wiper 52 can be arranged.
  • the at least one spatial region 54 has a guide rail and/or groove into which the at least one wiper 52 can be introduced and/or in which the at least one wiper 52 is arranged if it is present.
  • a projection of the at least one wiper 52 in the projection plane preferably at least partially superimposes the projection of the at least one sliding surface 32 in the projection plane.
  • the at least one wiper 52 is preferably arranged in alignment with the at least one sliding surface 32 with respect to the cleaning direction G.
  • the at least one cleaning element 31 preferably additionally has the at least one wiper 52 downstream of the at least one cleaning region 37 counter to the cleaning direction G.
  • the at least one wiper 52 and/or the spatial area 54 of the at least one wiper 52 is/are preferably arranged downstream of the at least one edge 51, counter to the cleaning direction G.
  • a longitudinal extent of the at least one wiper 52 preferably has an acute or obtuse angle, preferably an angle, to the cleaning direction G and/or to the central axis 53 of the at least one cleaning element 31 of not equal to 90°. This preferably improves the removal of the wiped-off cleaning fluid and/or the pressure fluid and/or the dirt.
  • the at least one wiper 52 is preferably designed as a wiper lip, for example made of rubber, preferably made of at least one silicone rubber mixture.
  • the at least one wiper 52 preferably does not come into contact with the at least one nozzle surface 09 of the at least one print head 08.
  • the at least one wiper 52 preferably does not come into direct contact with the at least one nozzle surface 09 of the at least one print head 08.
  • the at least a cleaning element 31 has at least two wipers 52, which are preferably arranged orthogonally to the cleaning direction G at a distance from one another and/or which each come into direct contact with at least one contact surface 11 of the at least one print head 08.
  • the at least two wipers 52 are preferably at a distance from one another that corresponds to the length of the nozzle surface 09 in the x-direction. More preferably, the at least one wiper 52 only comes into contact with the at least one contact surface 11 of the at least one print head 08.
  • the at least one wiper 52 preferably protrudes in the vertical direction, in particular in the z-direction, beyond the surface of the at least one cleaning area 37. The contact of the at least one wiper 52 with the at least one contact surface 11 is preferably ensured by pressing the at least one wiper 52 on.
  • the at least one wiper 52 is pressed against the at least one contact surface 11 by at least 0.2 mm (zero point two millimeters) and/or by a maximum of 0.6 mm (zero point six millimeters).
  • the at least one wiper 52 advantageously removes residues such as pressurized fluid, cleaning agent and/or dirt which have not been removed by the at least one cleaning area 37 .
  • the at least one wiper 52 supports the drying of the at least one contact surface 11 after cleaning has taken place.
  • the at least one wiper 52 is advantageously arranged in such a way that damage to the at least one nozzle surface 09 by the wiper 52 is avoided.
  • the cleaning element 31 in question comprises at least one cleaning area 37, as a result of which at least one print head 08 of at least one nozzle bar 04 can preferably be cleaned and/or cleaned.
  • the cleaning element 31 in question preferably comprises at least two cleaning areas 37.
  • the at least two cleaning areas 37 in question can preferably be and/or are connected by at least one connecting element 42.
  • the one cleaning head 31 in question which comprises at least two connectable and/or connected cleaning areas 37, preferably at least two print heads 08 can be cleaned and/or cleaned, with the at least two print heads 08 preferably being located in at least two different rows of print heads 08 are arranged in the y-direction.
  • the at least one printing unit 01 of the printing press comprises at least one nozzle bar 04 with at least two print heads 08 arranged next to one another, which delimit the at least one positioning gap 07, with at least one feed device 13 assigned to the respective positioning gap 07 and/or at least one of the relevant Cleaning device 18 assigned to print head 08 of nozzle bar 04.
  • the at least one feed system 13 is used, for example, in an operating state of the printing press, in which case at least one printing substrate 03 can be and/or is being printed with at least one printing fluid.
  • the ejection of at least one fluid, for example a gas and/or a gas mixture, in particular air, and/or a liquid through the outlet opening 17 of the respective feed device 13 favors the penetration and/or deposition of, for example, pressurized fluid in the respective positioning gap 07 made more difficult and/or prevented.
  • the cleaning element 31 has at least two cleaning areas 37, preferably four cleaning areas 37.
  • the at least one cleaning element 31 preferably has exactly as many cleaning regions 37 as there are rows of print heads arranged next to one another, in particular in the x-direction, in the nozzle bar 04 assigned to this cleaning element 31.
  • the at least two cleaning areas 37 are preferably arranged next to one another orthogonally to the cleaning direction G and/or orthogonally to the y-direction and/or in the x-direction.
  • at least two rows of print heads 08, preferably four rows of print heads 08, more preferably all rows of print heads 08 of a nozzle bar 04, are and/or can be cleaned at the same time and/or with the at least one cleaning element 31.
  • the at least one cleaning element 31 preferably has no additional sliding surface 32 between its first and last cleaning region 37.
  • the at least one cleaning element 31 preferably has no additional guide surface 36 between its first and last cleaning region 37.
  • the at least one nozzle bar 04 comprises at least two rows of print heads 08.
  • the at least two rows of print heads 08 are preferably each at an angle of at least 1° (one degree), preferably of at least 3°, more preferably 4°, to one another. This is the case in particular when the at least one nozzle bar 04 is opposite a curved and/or cylindrical printing material guide element 02.
  • the at least two rows of print heads 08 are preferably each arranged at an angle of at least 1° (one degree), preferably at least 3°, more preferably 4°, in relation to a normal vector of the respective exit surfaces 09.
  • a surface of the cleaning element 31 that comprises the at least one fluid supply 38 and the at least one fluid discharge 39 and the at least one fluid suction 41 is preferred, preferably the plane of the surface of the respective cleaning area 37, in each case parallel to the at least one exit surface 09 of the at least one print head 08, which is assigned to this surface and/or this cleaning area 37. More preferably, this surface and/or this cleaning area 37 is directed towards this at least one exit surface 09.
  • the normal vectors of at least two surfaces of the cleaning element 31, which each comprise at least one fluid supply 38 and at least one fluid discharge 39 and at least one fluid suction 41, preferably the surfaces of the at least two cleaning regions 37 of the cleaning element 31, have an angle of at least 1° to one another ( one degree), preferably of at least 3°, more preferably of 4°.
  • At least one throttle is preferably arranged in the fluid supply 38, in particular in a channel of the fluid supply 38.
  • the at least one throttle is preferably designed to regulate the supply of cleaning agent to the at least one fluid supply opening 38, in particular as a function of the angular position and/or inclination of the respective cleaning area 37.
  • the at least two cleaning areas 37 of a cleaning element 31 are offset from one another in the cleaning direction G.
  • the printing machine is preferably cleaned.
  • the at least one print head 08 of at least one nozzle bar 04 of the printing press is preferably cleaned by the at least one cleaning device 18.
  • the at least one cleaning device 18 preferably ejects cleaning fluid by means of the at least one fluid supply 38 of the at least one cleaning element 31 .
  • the at least one contact surface 11 is preferably wetted with cleaning fluid by the at least one fluid supply 38 .
  • the at least one fluid supply 38 preferably sprays cleaning fluid onto the at least one contact surface 11.
  • the at least one nozzle surface 09 and the at least one contact surface 11 and the at least one positioning gap 07 are preferably wetted with cleaning fluid from the at least one fluid supply 38.
  • the at least one cleaning element 31 and/or the at least one cleaning unit 26 is preferably placed against the at least one print head 08.
  • the at least one contact surface 11 of the at least one print head 08 arranged in a cleaning position preferably comes into direct contact with the at least one sliding surface 32 of the at least one cleaning element 31.
  • at least the at least one cleaning element 31 and/or the at least one cleaning unit 26 is preferably moved in the cleaning direction G.
  • the relevant cleaning element 31 and/or the relevant cleaning unit 26 has a constant speed along the cleaning direction G.
  • the at least one cleaning element 31 is preferably arranged above the at least one sealing element 56, preferably within the at least one cross member 22.
  • the at least one cleaning element 31 is preferably moved over the sealing element 56 along the cleaning direction G during the cleaning.
  • the at least one fluid supply opening 38 preferably ejects cleaning agent, which comes into contact with the at least one outlet surface 09 and/or the at least one contact surface 11 and/or the at least one positioning gap 07 of the nozzle bar 04 in question.
  • the cleaning agent preferably cleans the at least one exit surface 09 and/or the at least one contact surface 11 and/or the at least one positioning gap 07.
  • the at least one fluid discharge 39 sucks off the cleaning agent and/or dirt, for example, after the exit surface 09 and/or the contact surface 11 and/or the positioning gap 07 has been cleaned, in a preferably first discharge step, preferably by applying negative pressure.
  • Cleaning fluid and/or dirt and/or pressurized fluid is preferably drawn off through the at least one first fluid discharge 39 with at least one discharge opening for removing cleaning fluid and/or dirt and/or pressurized fluid from the at least one cleaning element 31.
  • the at least one discharge opening of the at least one first fluid discharge 39 encloses the at least one outlet opening of the at least one fluid supply 38 in the area of the surface of the at least one cleaning element 31, cleaning fluid and/or dirt and/or pressurized fluid is preferably discharged counter to the cleaning direction G before the at least a fluid supply 38 and/or opposite to the cleaning direction G after the at least one fluid supply 38 and/or orthogonally to the cleaning direction G before and/or after the at least one fluid supply 38.
  • any cleaning fluid and/or remaining contamination and/or remaining printing fluid preferably on the at least one print head 08 and/or in at least one positioning gap 07 is removed through at least one second fluid outlet 41 with at least one outlet opening of cleaning fluid and/or Dirt and / or pressure fluid sucked off.
  • the fluid suction device 41 preferably sucks off the cleaning agent and/or dirt, for example, which has remained and/or adhered to the exit surface 09 and/or the contact surface 11 and/or in the positioning gap 07, for example after the first removal step.
  • the at least one contact surface 11 of the at least one print head 08 arranged in a cleaning position preferably comes into direct contact with the at least one sliding surface 32 of the at least one cleaning element 31 opposite to the cleaning direction G only in front of the at least one second fluid discharge 41.
  • the at least one cleaning element 31 releases contact with the at least one contact surface 11 of the at least one print head 08, counter to the cleaning direction G, after the at least one second fluid discharge 41, preferably after the last unit sucking off cleaning fluid and/or dirt and/or pressure fluid.
  • the contact is released by means of the at least one edge 51 and/or by means of at least one ramp 34 with a negative gradient.
  • the at least one contact surface 11 is preferably wiped with the at least one wiper 52, preferably after cleaning with the at least one fluid inlet 38 and/or with the at least one first fluid outlet 39 and/or with the at least one second fluid outlet 41 deducted by means of at least one wiper lip.
  • the speed of the cleaning element 31 and/or the cleaning unit 26 is slowed down and/or stopped in the cleaning direction G, preferably at at least one position, which is assigned to a positioning gap 07, for example, so that the positioning gap 07 in question can be cleaned, for example .
  • the at least one feed device 13 preferably pushes out a fluid during the at least one cleaning process, for example a gas and/or a gas mixture, in particular air, and/or a liquid, through the at least one outlet opening 17. This makes it more difficult and/or prevents the cleaning agent from penetrating and/or depositing in the respective positioning gap 07 during the cleaning process.
  • Intensive cleaning, for example, of the at least one relevant positioning gap 07 is preferably carried out, with the cleaning element 31 and/or the cleaning unit 26 preferably slowing down and/or slowing down its speed in the cleaning direction G at the at least one position, which is preferably assigned to the respective positioning gap 07 is stopped and/or the feed device 13 ejects at least one fluid, for example a gas and/or a gas mixture, in particular air, and/or a liquid.
  • the cleaning element 31 and/or the cleaning unit 26 preferably slowing down and/or slowing down its speed in the cleaning direction G at the at least one position, which is preferably assigned to the respective positioning gap 07 is stopped and/or the feed device 13 ejects at least one fluid, for example a gas and/or a gas mixture, in particular air, and/or a liquid.

Landscapes

  • Ink Jet (AREA)
EP22189212.8A 2021-10-22 2022-08-08 Dispositif de nettoyage, machine à imprimer et procédé de nettoyage d'une machine à imprimer Pending EP4169726A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021127501.6A DE102021127501A1 (de) 2021-10-22 2021-10-22 Reinigungsvorrichtung, Druckmaschine und Verfahren zum Reinigen einer Druckmaschine

Publications (2)

Publication Number Publication Date
EP4169726A2 true EP4169726A2 (fr) 2023-04-26
EP4169726A3 EP4169726A3 (fr) 2023-05-24

Family

ID=82849996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22189212.8A Pending EP4169726A3 (fr) 2021-10-22 2022-08-08 Dispositif de nettoyage, machine à imprimer et procédé de nettoyage d'une machine à imprimer

Country Status (2)

Country Link
EP (1) EP4169726A3 (fr)
DE (1) DE102021127501A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020169321A1 (fr) 2019-02-22 2020-08-27 Koenig & Bauer Ag Machine à imprimer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4403379B2 (ja) * 2003-10-30 2010-01-27 リコープリンティングシステムズ株式会社 インクジェットプリンタ用ヘッド清掃装置及び該清掃装置を備えたプリンタ
ES2453271T3 (es) * 2011-06-29 2014-04-07 Agfa Graphics N.V. Sistema y método para limpiar una placa de boquillas
DE102020105975A1 (de) * 2020-03-05 2021-09-09 Koenig & Bauer Ag Druckmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020169321A1 (fr) 2019-02-22 2020-08-27 Koenig & Bauer Ag Machine à imprimer

Also Published As

Publication number Publication date
DE102021127501A1 (de) 2023-04-27
EP4169726A3 (fr) 2023-05-24

Similar Documents

Publication Publication Date Title
EP3927554B1 (fr) Machine d'impression
DE69518191T2 (de) Tintenversorgungsvorrichtung und zugehöriges Tintenstrahlaufzeichnungsgerät
DE69605409T2 (de) Reinigungsfluidvorrichtung und verfahren für eine kontinuierlich druckende tintenstrahldüse
DE69903122T2 (de) Tintenstrahldrucker mit einem Abstreifer und einer Reinigungsvorrichtung mit Unterdruck-Abzugshaube und Verfahren zur Montage des Tintenstrahldruckers
DE60113443T2 (de) Selbstreinigender druckkopf für tintenstrahldrucker
DE69929850T2 (de) Tintenstrahldrucker mit einem messerartigen Reinigungsmechanismus und Verfahren zum Montieren des Druckers
EP4065376B1 (fr) Machines d'impression et procédé de nettoyage d'au moins une barre de buses d'au moins un ensemble d'impression
EP3976378A1 (fr) Dispositif de nettoyage de tête d'impression pour une imprimante 3d et imprimante 3d comprenant un dispositif de nettoyage de tête d'impression ainsi qu'utilisation du dispositif de nettoyage de tête d'impression et procédé de nettoyage d'une tête d'impression d'une imprimante 3d
DE69910858T2 (de) Verfahren und Vorrichtung zum Reinigen eines Tintenstrahldruckkopfes
DE69908142T2 (de) Tintenstrahldrucker
EP4065375B1 (fr) Machine d'impression et procédé de nettoyage d'au moins une barre de buses d'au moins un ensemble d'impression
DE19705006A1 (de) Vorrichtung zum Zuführen und Absaugen von Farbe in Druckmaschinen
DE102020105974A1 (de) Druckmaschine mit zumindest einer Reinigungseinrichtung
DE60014488T2 (de) Siebdruckvorrichtung mit einer Reinigungseinheit, die innerhalb eines Stencils ersetzbar ist
DE102014206994A1 (de) Druckwerk mit zumindest einem Druckkopf und zumindest einer Reinigungsvorrichtung und ein Verfahren zur Reinigung zumindest einer Düsenfläche zumindest eines Druckkopfs
EP4169726A2 (fr) Dispositif de nettoyage, machine à imprimer et procédé de nettoyage d'une machine à imprimer
DE102019104580B4 (de) Druckmaschine mit einer reinigenden Zuführeinrichtung
DE102006022522B4 (de) Vorrichtung für den Auftrag einer Flüssigkeit
DE102019009149B4 (de) Druckmaschine
DE102015100228A1 (de) Vorrichtung zum Reinigen einer Druckeinheit
DE102019104578A1 (de) Druckmaschine
DE102020105970A1 (de) Druckaggregat mit zumindest einem Düsenbalken
DE102020105963A1 (de) Verfahren zur Reinigung zumindest eines Druckkopfes und Druckmaschine mit zumindest einer Reinigungsvorrichtung
EP2888111B1 (fr) Appareil d'imprimer et procédé d'impression
DE10132964C2 (de) Verfahren zum Befüllen einer Tintenzuführungs-Einrichtung in einem Tintendrucker

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RIC1 Information provided on ipc code assigned before grant

Ipc: B41J 25/00 20060101ALI20230419BHEP

Ipc: B41J 2/165 20060101ALI20230419BHEP

Ipc: B41J 25/304 20060101AFI20230419BHEP

17P Request for examination filed

Effective date: 20230503