EP3535064A1 - Print head and associated operating method - Google Patents

Print head and associated operating method

Info

Publication number
EP3535064A1
EP3535064A1 EP17811262.9A EP17811262A EP3535064A1 EP 3535064 A1 EP3535064 A1 EP 3535064A1 EP 17811262 A EP17811262 A EP 17811262A EP 3535064 A1 EP3535064 A1 EP 3535064A1
Authority
EP
European Patent Office
Prior art keywords
print head
printhead
coil
detergent
agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17811262.9A
Other languages
German (de)
French (fr)
Other versions
EP3535064B1 (en
Inventor
Hans-Georg Fritz
Benjamin WÖHR
Marcus Kleiner
Moritz BUBEK
Timo Beyl
Frank Herre
Steffen Sotzny
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.)
Duerr Systems AG
Original Assignee
Duerr Systems 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 Duerr Systems AG filed Critical Duerr Systems AG
Priority to EP20170976.3A priority Critical patent/EP3702045B1/en
Publication of EP3535064A1 publication Critical patent/EP3535064A1/en
Application granted granted Critical
Publication of EP3535064B1 publication Critical patent/EP3535064B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/149—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet characterised by colour change manifolds or valves therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B05B1/3053—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a solenoid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0447—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
    • B05B13/0452—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles the conveyed articles being vehicle bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B05B15/555—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids discharged by cleaning nozzles
    • 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
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/1707—Conditioning of the inside of ink supply circuits, e.g. flushing during start-up or shut-down
    • 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
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2103—Features not dealing with the colouring process per se, e.g. construction of printers or heads, driving circuit adaptations

Definitions

  • the invention relates to a print head for applying a coating material to a component, in particular for La ⁇ cktechnik of a motor vehicle body part with a paint. Furthermore, the invention comprises an operating method for such a printhead.
  • Rotationszerstäu- be as an application device usually employed about, but have the disadvantage of a limited transfer efficiency, that is only part of the appli ⁇ ed varnish deposits on the components to be coated, while the rest of the applied coating disposed of as so-called overspray must become.
  • print heads as the application device , as are known, for example, from DE 10 2013 002 412 A1, US Pat. No. 9,108,424 B2 and DE 10 2010 019 612 A1.
  • printheads in contrast to the known Rotationszerstäubern no spray of the paint to be applied, but a spatially narrow paint jet, which almost completely reflected on the painted part, so that almost no over ⁇ spray.
  • Figure 1 is a schemati ⁇ specific illustration of such a control valve which is arranged in a print head.
  • a Düsenöff ⁇ tion 2 which is either released or blocked by the control valve.
  • nozzle plate 1 In the nozzle plate 1 are located next to the nozzle opening 2 more nozzle openings, which are each controlled by a separate control valve, said further nozzle openings are not shown for simplicity.
  • the print head includes a base plate 3, which defines a coating agent supply line 4, that is, the paint to be painted is supplied via the coating medium supply 4 and can then exit with opened control valve by the SI ⁇ senö réelle. 2
  • a coil tube 5 is arranged ⁇ , which is externally wound with a coil 6.
  • a magnetic coil core 7 In the coil tube 5 is a magnetic coil core 7, which is arranged stationary and sealed relative to the coil tube 5 by a seal 8.
  • a magnetic armature 9 which can also be referred to as a valve needle and in response to the energization of the coil 6 in the direction of the double arrow is displaced to either release the Düsenöff ⁇ tion 2 or close.
  • the armature 9 carries at its lower end a seal 10 to dense the nozzle opening 2 in the illustrated closed position, so that no paint can escape from the nozzle opening 2.
  • control valve still has a remindstellfe ⁇ 11, which the armature 9 and thus also the seal 10th in the drawing down into the illustrated Sch.stel ⁇ ment presses.
  • the coil 6 is de-energized, so that the return spring 11 can push the armature 9 and thus also the seal 10 in the drawing down into the illustrated closed position.
  • a disadvantage of this known control valve is the fact that the interior of the control valve and, in particular, an inner space 12 of the coil ⁇ pipe 5 is exposed to the lacquer.
  • paint residues in the interior 12 of the coil tube 5 can impair the functioning of the control valve.
  • paint deposits in the interior 12 of the coil tube 5 can impair the functioning of the control valve.
  • Control valve affect the freedom of the anchor 9.
  • the paint residues in the interior space 12 of the coil tube 5 also prevent a color change since the control valve can not be rinsed during operation.
  • One way to do this is to disassemble, disassemble, clean, and reassemble the control valve, which will take a period of 1-2 hours, and therefore prevents a color change during operation.
  • Another possibility for a color change is to rinse the printhead with an extremely high amount of detergent of meh ⁇ reren liters and over a longer period of several minutes, which also prevents a color change during operation due to the required amount of detergent and the required rinsing time ,
  • the invention is therefore based on the object of creating a correspondingly improved printhead and to provide a entspre ⁇ and fair operating procedures.
  • the invention comprises the general technical teaching of technically designing the print head such that a color change is made possible in the coating operation. This is achieved by virtue of the fact that the print head can be rinsed with a rinsing agent during a color change in order to rinse off coating agent residues from the print head.
  • the print head according to the invention has in accordance with the prior art with a coating agent feed, to carry out the coating agent to be applied to the print head ⁇ .
  • the print head according to the invention preferably also has a separate detergent supply to supply a detergent.
  • the coating-agent feed is preferably separated from the flushing agent supply, so that the print head for the Zudate ⁇ tion of the coating agent on the one hand and for the Zuure ⁇ tion of the rinsing agent other hand, preferably has separate input lässe.
  • one color hose (coating agent feed) per color could be connected to the applicator (print head) (integrated color changer technique). Then there is in or on the applicator a detergent connection and a
  • Pulse air connection These are then used for rinsing.
  • the print head according to the invention preference ⁇ as well as a return on to coating compositions and / or due detergent namely either in a ring line or into a disposal.
  • the print head according to the invention has, in addition to the separate connections for the supply of the coating agent and the rinsing agent before ⁇ preferably also includes a further separate connection to return coating agent or detergent.
  • the recycle stream to the recirculation is in this case preferably controlled by a controllable feedback valve which can be designed as a self-medium operated recirculation valve or as a proportio ⁇ nalventil.
  • a controllable feedback valve which can be designed as a self-medium operated recirculation valve or as a proportio ⁇ nalventil.
  • Such valve types are known per se from the prior art and therefore need not be described in detail.
  • the printhead has a plurality of nozzles to deliver the coating agent.
  • a control valve is assigned to the individual nozzles in each case in order to control the coating agent delivery through the respective nozzle.
  • the above-mentioned detergent feed then preferably comprises ⁇ branch lines leading to the individual control valves so that all of the control valves of the printhead may be rinsed with the rinsing agent simultaneously.
  • the individual branches of the Spülmit ⁇ telzu facility are designed so that the supplied detergent is distributed evenly on the branch lines to the control valves, so that the individual control valves are flushed essentially with the same amount of detergent.
  • the printhead has at least one nozzle for dispensing the coating agent and an associated control valve for controlling the coating agent delivery through the nozzle, as already briefly explained above.
  • the control valve may here at ⁇ comprise an electrical coil as in the described known construction, which can be wound on a bobbin tube on ⁇ . It has already been explained in the introduction to the art that can be deposited in this coil tube coating medium residues, which on the one hand affect the function ⁇ onsttle the control valve and to ande ren ⁇ can prevent the color change capability.
  • the flushing agent supply line preferably opens into the coil tube in order to flush the interior of the coil tube.
  • the coil tube - as in the conventional control valve described above - preferred has a circular inner cross-section and contains a coil core. It may be advantageous if the coil core has a profile cross section which does not completely fill the inner cross section of the coil tube in order to leave room between the coil tube and the coil core for the detergent, so that the detergent can flow in the axial direction.
  • the coil core can for this purpose have a star-shaped profile cross-section with radially projecting ribs extending in the axial direction, so that the flushing agent can flow in the axial direction between the ribs of the coil core.
  • the coil core has in its lateral surface a flushing groove, which may extend, for example, axially, in the circumferential direction or spirally.
  • axially extending flushing channels can also be arranged in the coil core.
  • the profile cross section of the spool core is grid-shaped and can be flowed through by the rinsing agent.
  • the coil core is preferably sealed with respect to the coil tube with a seal, in particular with a compressive strength of more than 2 bar, 4 bar or 6 bar.
  • the print head can have a plurality of control valves, all of which can be rinsed.
  • the individual control valves usually each have a coil tube, wherein the detergent feed then opens into all the coil tubes to flush all the coil tubes can.
  • the control valve generally has a displaceable armature, as in the case of the known control valve described above, which is displaced as a function of the energization of the coil and closes or releases the nozzle as a function of its position.
  • This armature preferably runs on a part of its Län ⁇ ge coaxially in the coil tube and preferably has an axially permeable profile cross section, so that flushing agent between the armature and the inner wall of the coil tube can flow.
  • the anchor on a non ⁇ circular profile cross-section which does not completely fill the circular inner cross section of the coil tube, and therefore an axial flow detergent allowed.
  • the profile cross section of the armature can be star-shaped or cross-shaped.
  • the rinsing agent supply opens into the coil tube in the axial direction between the armature and the coil core.
  • the detergent feed opens in the axial direction in the region of the SPU lenkerns into the coil pipe, in particular on the side remote from the bewegli ⁇ chen anchor end of the nozzle tube.
  • the movable armature is arranged in a detergent-permeable guide cage, in particular in a slotted cylinder. This offers the advantage that the movable armature can be rinsed during a rinsing process, whereby coating agent deposits on the armature are avoided.
  • the displaceable armature has a central guide bore, wherein a guide pin projects into the guide bore. This causes a linear guide, which however can also be rinsed.
  • a flexible membrane which separates the control valve from the coating agent supply, so that the control valve is protected by the membrane from contact with a coating agent.
  • the control valve itself does not have to be flushed at all, since the control valve itself does not come into contact with the respective coating agent at all.
  • only the smooth loading coating means-side surface of the membrane rinsed ⁇ to, but this is very simple and efficient possible because the smooth membrane surface forms wrestled barely starting points for Lackabla ⁇ .
  • the printhead according to the invention preferably allows a fast color change within a color change time of less than 1h, 20min, 10min, 30s, 10s or even less than 5s.
  • the detergent consumption is preferably less than 101, 51, 21, 200ml, 100ml, 50ml, 20ml or even less than 10ml.
  • the print head has a plurality of separate feeds detergent in order to supply various detergents, which may be the game as adapted to the respective coating agents in ⁇ .
  • the print head with its media-carrying parts is preferably constructed in such a way that the media-carrying parts are free of dead space and / or undercut in order to improve the rinsability.
  • the print head is provided with a cleaning-promoting coating on its surfaces which come into contact with the coating agent, such a coating also being provided as an "easy-to-clean coating”. is known.
  • the coating device according to the invention preferably also comprises a color changer, such as a linear color changer, a rotary color changer, a color changer integrated in the print head or an A / B color changer.
  • a color changer such as a linear color changer, a rotary color changer, a color changer integrated in the print head or an A / B color changer.
  • the invention also comprises a corresponding Be ⁇ operating method for such a print head, which individual process steps already result from the above Be ⁇ description and therefore need not be described in detail.
  • the detergent can be a Univer ⁇ sal réellestoff suitable for both water-based paint as well as solvent-based paint.
  • the rinsing agent can be a VOC-free (VOC: volatile organic com- pounds) rinsing agent.
  • the print head can also be rinsed together with the rinsing agent or alternately with pulsed air.
  • the possibility that the print head successively different rinsing agents are supplied ⁇ leads.
  • a solvent-based lacquer is first supplied and ap ⁇ pli instance.
  • the print head is then rinsed with a detergent lö ⁇ seffenbas striv to flush remnants of the solvent-telbas striv varnish.
  • a release agent can be supplied, for example alcohol.
  • a water-based paint is then supplied and ap ⁇ pli instance.
  • the print head is then rinsed with a water-based rinse-aid to rinse off residues of the water-based paint.
  • the print head is preferably pressed with the new coating agent, ie filled.
  • a defined amount of paint is discharged through the nozzle of the print head.
  • all fluids (coating agents and detergents) emitted when a rinsing process are collected for a Dispose of ⁇ supply.
  • the outer surface of the nozzle head is rinsed during the color change to remove there at ⁇ adherent coating agent residues.
  • the rinsing agent can be discharged successively or alternately into the return or through the nozzle.
  • optional rinsing with a mixture of detergent and pulse air.
  • Figure 1 is a schematic representation of a conventional
  • FIG. 2 shows a schematic illustration of the control valve with a flushing agent feed, a modification of FIG. 2, in which the flushing agent is supplied via the coating agent feed,
  • FIG. 6 shows a further modification with a flushing agent supply at the upper end of the coil tube
  • Figure 7 shows a modification with a flexible membrane for
  • Figure 8 is a schematic representation of an inventive ⁇ SEN printhead with an upstream color Wechs ⁇ ler and a rear guide
  • Figure 9 is a schematic diagram for supplying a plurality of control valves with detergent and loading coating agents.
  • FIG. 2 The schematic representation of a control valve according to the invention in FIG. 2 will now be described below, wherein the control valve is arranged in a print head.
  • This embodiment of a control valve according to the invention are partly consistent with the initially described and illustrated in Fi gure 1 ⁇ conventional control valve, so that reference is made to avoid repetition of the foregoing description, are used for corresponding individual units ⁇ same reference numerals.
  • a special feature of this embodiment is that the control valve has a detergent feed 13, which opens into the interior 12 of the coil tube 5.
  • flushing means can therefore be supplied in order to flush the control valve with a flushing agent during a color change. As a result, a color change during operation within a short time is possible.
  • control valve in this embodiment ⁇ example, a special design of the seal 8 between the spool core 7 and the coil tube 5, wherein the seal 8 allows a compressive strength of more than 2bar.
  • Is 3 shows a schematic representation of a further embodiment of a control valve of the invention in a print head, which embodiment partially coincides ⁇ with the above-described embodiment, so that reference is made to avoid repetition of the foregoing description, under the same entspre ⁇ sponding details reference numeral be used.
  • a special feature of this embodiment is that the displaceable armature 9 can be flowed around free of detergent, so that the detergent can also flush the interior 12 of the coil tube 5.
  • the armature 9 has a cross-shaped profile cross section with axially extending ribs, so that the flushing agent between the ribs of the armature 9 can flow in the axial direction into the interior 12 of the coil tube 5.
  • the rinsing agent is thus not supplied via the rinsing agent supply 13, as in FIG. phase but the coating-agent feed 4, which are alternately used for the supply of coating material and to ⁇ management of detergents.
  • the coil core 7 is in this case sealed from the interior 12 by the seal 8.
  • Figure 4 shows a further embodiment which also largely corresponds to the above-describednessbei ⁇ play, so that reference is made to avoid repetition of the foregoing description, WO-used in the same reference numerals for corresponding details.
  • a special feature of this embodiment is that the displaceable armature 9 is arranged in a flushable guide cage 14, which consists of a slotted cylinder, so that the interior of the guide cage 14 can be rinsed.
  • the seal 8 seals the interior of the coil tube 5 against the media-carrying area.
  • Figure 5 shows yet another embodiment, so that again made to avoid repetition of the foregoing description, are used for corresponding individual units ⁇ same reference numerals.
  • the armature 9 in the center of a guide bore 15, into which a guide pin 16 engages, wherein the fit of the guide bore 15 and the guide pin 16 is also accessible for detergent.
  • the seal 8 in this case seals the annular gap between the coil tube 5 and the spool core 7.
  • the exemplary embodiment according to FIG. 6 again partially agrees with the exemplary embodiment according to FIG. 2, so that to avoid repetition, reference is made to the above description, wherein the same reference numerals are used for corresponding Einzelhei ⁇ th.
  • a special feature of this embodiment is that the detergent supply 13 in this case does not open between the coil core 7 and the armature 9 in the interior 12 of the coil tube. Rather, the detergent feed 13 in this case opens at the upper end of the coil tube 5 in the coil tube.
  • FIG. 7 shows a further modification of a flushable control valve, which for this purpose provides a flexible membrane 17, which separates the control valve from the media-carrying parts in the coating agent supply 4.
  • the control valve itself does not have to be flushed with flushing agent, since the control valve itself does not come into contact with the respective lacquer at all. Rather, only the membrane 17 is touched on its coating medium side of the respective paint, so that only this side of the membrane 17 must be rinsed, which is readily possible by tesstoffzu Entry on the coating agent supplied detergent.
  • Figure 8 shows a greatly simplified schematic depicting ⁇ development of a coating device according to the invention with a coating agent feed 18, a color changer 19, a print head 20 according to the invention, a recirculation valve 21 and a recirculation 22nd
  • the color changer 19 may perform the print head 20 in this case various ⁇ densidee coating agent, wherein the print head 20 may be purged via a non-illustrated detergent feeder or on the coating agent feeder 18 with detergent optional.
  • FIG. 9 shows a schematic representation of a print head according to the invention with a plurality of control valves 23.1, 23.4, which are supplied with coating means via a common coating agent feed 24 with a plurality of branch lines 25.
  • the coating device still has a common detergent supply 26, which is connected via a respective branch line 27 with the individual control valves 23.1-23.4, so that all the control valves 23.1-23.4 of
  • Printhead can be rinsed with detergent.

Landscapes

  • Coating Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Cleaning In General (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention relates to a print head (20) for applying a coating agent to a part, in particular for painting a motor vehicle body part with a paint. According to the invention, the print head is designed in such a way that paints can be changed during the coating operation and the print head can be rinsed with a rinsing agent when paints are changed in order for coating agent residues to be rinsed out of the print head.

Description

BESCHREIBUNG Druckkopf und zugehöriges Betriebsverfahren  DESCRIPTION Printhead and related operating procedures
Die Erfindung betrifft einen Druckkopf zur Applikation eines Beschichtungsmittels auf ein Bauteil, insbesondere zur La¬ ckierung eines Kraftfahrzeugkarosseriebauteils mit einem Lack. Weiterhin umfasst die Erfindung ein Betriebsverfahren für einen solchen Druckkopf. The invention relates to a print head for applying a coating material to a component, in particular for La ¬ ckierung of a motor vehicle body part with a paint. Furthermore, the invention comprises an operating method for such a printhead.
Zur Serienlackierung von Kraftfahrzeugkarosseriebauteilen werden als Applikationsgerät üblicherweise Rotationszerstäu- ber eingesetzt, die jedoch den Nachteil eines beschränkten Auftragswirkungsgrades haben, d.h. nur ein Teil des appli¬ zierten Lacks lagert sich auf den zu beschichtenden Bauteilen ab, während der Rest des applizierten Lacks als sogenannter Overspray entsorgt werden muss. The standard painting motor vehicle body components Rotationszerstäu- be as an application device usually employed about, but have the disadvantage of a limited transfer efficiency, that is only part of the appli ¬ ed varnish deposits on the components to be coated, while the rest of the applied coating disposed of as so-called overspray must become.
Eine neuere Entwicklungslinie sieht dagegen als Applikations¬ gerät sogenannte Druckköpfe vor, wie sie beispielsweise aus DE 10 2013 002 412 AI, US 9,108,424 B2 und DE 10 2010 019 612 AI bekannt sind. Derartige Druckköpfe geben im Gegensatz zu den bekannten Rotationszerstäubern keinen Sprühnebel des zu applizierenden Lacks ab, sondern einen räumlich eng begrenzten Lackstrahl, der sich nahezu vollständig auf dem zu lackierten Bauteil niederschlägt, so dass nahezu kein Over¬ spray entsteht. A newer development line, on the other hand, provides so-called print heads as the application device , as are known, for example, from DE 10 2013 002 412 A1, US Pat. No. 9,108,424 B2 and DE 10 2010 019 612 A1. Such printheads, in contrast to the known Rotationszerstäubern no spray of the paint to be applied, but a spatially narrow paint jet, which almost completely reflected on the painted part, so that almost no over ¬ spray.
Derartige Druckköpfe weisen zur Steuerung der Beschichtungs- mittelabgabe Steuerventile auf, wobei Figur 1 eine schemati¬ sche Darstellung eines solchen Steuerventils zeigt, das in einem Druckkopf angeordnet ist. Hierbei befindet sich in einer Düsenplatte 1 eine Düsenöff¬ nung 2, die von dem Steuerventil entweder freigegeben oder versperrt wird. In der Düsenplatte 1 befinden sich neben der Düsenöffnung 2 weitere Düsenöffnungen, die jeweils von einem separaten Steuerventil gesteuert werden, wobei diese weiteren Düsenöffnungen zur Vereinfachung nicht dargestellt sind. Such printheads have to control the coating agent delivery control valves, wherein Figure 1 is a schemati ¬ specific illustration of such a control valve which is arranged in a print head. Here is located in a nozzle plate 1 a Düsenöff ¬ tion 2, which is either released or blocked by the control valve. In the nozzle plate 1 are located next to the nozzle opening 2 more nozzle openings, which are each controlled by a separate control valve, said further nozzle openings are not shown for simplicity.
Weiterhin enthält der Druckkopf eine Basisplatte 3, die eine Beschichtungsmittelzuführung 4 begrenzt, d.h. der zu lackierende Lack wird über die Beschichtungsmittelzuführung 4 zugeführt und kann dann bei geöffnetem Steuerventil durch die Dü¬ senöffnung 2 austreten. An der Oberseite der Basisplatte 3 ist ein Spulenrohr 5 ange¬ ordnet, das außen mit einer Spule 6 bewickelt ist. Furthermore, the print head includes a base plate 3, which defines a coating agent supply line 4, that is, the paint to be painted is supplied via the coating medium supply 4 and can then exit with opened control valve by the SI ¬ senöffnung. 2 At the top of the base plate 3, a coil tube 5 is arranged ¬ , which is externally wound with a coil 6.
In dem Spulenrohr 5 befindet sich ein magnetischer Spulenkern 7, der ortsfest angeordnet und gegenüber dem Spulenrohr 5 durch eine Dichtung 8 abgedichtet ist. In the coil tube 5 is a magnetic coil core 7, which is arranged stationary and sealed relative to the coil tube 5 by a seal 8.
Darüber hinaus befindet sich in dem Spulenrohr 5 ein magnetischer Anker 9, der auch als Ventilnadel bezeichnet werden kann und in Abhängigkeit von der Bestromung der Spule 6 in Richtung des Doppelpfeils verschiebbar ist, um die Düsenöff¬ nung 2 entweder freizugeben oder zu verschließen. In addition, located in the coil tube 5, a magnetic armature 9, which can also be referred to as a valve needle and in response to the energization of the coil 6 in the direction of the double arrow is displaced to either release the Düsenöff ¬ tion 2 or close.
Der Anker 9 trägt an seinem unteren Ende eine Dichtung 10, um die Düsenöffnung 2 in der dargestellten Schließstellung abzu- dichten, damit kein Lack aus der Düsenöffnung 2 austreten kann . The armature 9 carries at its lower end a seal 10 to dense the nozzle opening 2 in the illustrated closed position, so that no paint can escape from the nozzle opening 2.
Darüber hinaus weist das Steuerventil noch eine Rückstellfe¬ der 11 auf, welche den Anker 9 und damit auch die Dichtung 10 in der Zeichnung nach unten in die dargestellte Schließstel¬ lung drückt. In addition, the control valve still has a Rückstellfe ¬ 11, which the armature 9 and thus also the seal 10th in the drawing down into the illustrated Schließstel ¬ ment presses.
Zum Öffnen des Steuerventils wird die Spule 6 also so To open the control valve, the coil 6 is so
bestromt, dass der Anker 9 mit der Dichtung 10 in der Zeichnung aktiv nach oben gezogen wird und zwar entgegen der Federkraft der Rückstellfeder 11. energized that the armature 9 with the seal 10 in the drawing is actively pulled upwards against the spring force of the return spring 11th
Zum Schließen des Steuerventils wird die Spule 6 dagegen stromlos geschaltet, so dass die Rückstellfeder 11 den Anker 9 und damit auch die Dichtung 10 in der Zeichnung nach unten in die dargestellte Schließstellung drücken kann. To close the control valve, however, the coil 6 is de-energized, so that the return spring 11 can push the armature 9 and thus also the seal 10 in the drawing down into the illustrated closed position.
Nachteilig an diesem bekannten Steuerventil ist die Tatsache, dass das Innere des Steuerventils und insbesondere ein Innen¬ raum 12 des Spulenrohrs 5 dem Lack ausgesetzt ist. A disadvantage of this known control valve is the fact that the interior of the control valve and, in particular, an inner space 12 of the coil ¬ pipe 5 is exposed to the lacquer.
Zum einen können deshalb Lackreste in dem Innenraum 12 des Spulenrohrs 5 die Funktionsfähigkeit des Steuerventils beein- trächtigen. Beispielsweise können Lackablagerungen in demOn the one hand, therefore, paint residues in the interior 12 of the coil tube 5 can impair the functioning of the control valve. For example, paint deposits in the
Steuerventil die Freigängigkeit des Ankers 9 beeinträchtigen. Control valve affect the freedom of the anchor 9.
Zum anderen verhindern die Lackreste in dem Innenraum 12 des Spulenrohrs 5 aber auch einen Farbwechsel, da das Steuerven- til im Betrieb nicht gespült werden kann. Zwar besteht bei den bekannten Druckköpfen mit derartigen Steuerventilen auch die Möglichkeit, einen andersfarbigen Lack zu applizieren. On the other hand, the paint residues in the interior space 12 of the coil tube 5 also prevent a color change since the control valve can not be rinsed during operation. Although it is also possible to apply a different colored paint in the known printheads with such control valves.
Eine Möglichkeit hierzu besteht darin, das Steuerventil aus- zubauen, zu zerlegen, zu reinigen und wieder zusammenzubauen, was jedoch eine Zeitdauer von 1-2 Stunden benötigt und deshalb einen Farbwechsel im laufenden Betrieb verhindert. Eine andere Möglichkeit für einen Farbwechsel besteht darin, den Druckkopf mit einer extrem hohen Spülmittelmenge von meh¬ reren Litern und über einen längeren Zeitraum von mehreren Minuten zu spülen, was wegen der erforderlichen Spülmittel- menge und der erforderlichen Spüldauer ebenfalls einen Farbwechsel im laufenden Betrieb verhindert. One way to do this is to disassemble, disassemble, clean, and reassemble the control valve, which will take a period of 1-2 hours, and therefore prevents a color change during operation. Another possibility for a color change is to rinse the printhead with an extremely high amount of detergent of meh ¬ reren liters and over a longer period of several minutes, which also prevents a color change during operation due to the required amount of detergent and the required rinsing time ,
Schließlich besteht noch die Möglichkeit, das Steuerventil bzw. den kompletten Druckkopf auszutauschen, was jedoch eben- falls im laufenden Betrieb nicht möglich ist und deshalb ei¬ nen Farbwechsel verhindert. Finally, there is the possibility of exchanging the control valve or the entire print head, but this likewise is not possible during operation and therefore prevents ei ¬ nen color change.
Die vorstehend beschriebenen bekannten Druckköpfe ermöglichen deshalb im laufenden Betrieb keinen Farbwechsel. The known printheads described above therefore do not allow color change during operation.
Zum technischen Hintergrund der Erfindung ist auch hinzuweisen auf DE 696 22 407 T2 und DE 36 34 747 AI. The technical background of the invention should also be pointed to DE 696 22 407 T2 and DE 36 34 747 AI.
Der Erfindung liegt deshalb die Aufgabe zugrunde, einen ent- sprechend verbesserten Druckkopf zu schaffen und ein entspre¬ chendes Betriebsverfahren anzugeben. The invention is therefore based on the object of creating a correspondingly improved printhead and to provide a entspre ¬ and fair operating procedures.
Diese Aufgabe wird durch den erfindungsgemäßen Druckkopf bzw. das erfindungsgemäße Betriebsverfahren gemäß den unabhängigen Ansprüchen gelöst. This object is achieved by the printhead according to the invention or the operating method according to the invention according to the independent claims.
Die Erfindung umfasst die allgemeine technische Lehre, den Druckkopf technisch so zu gestalten, dass im Beschichtungsbe- trieb ein Farbwechsel ermöglicht wird. Dies wird dadurch er- reicht, dass der Druckkopf bei einem Farbwechsel mit einem Spülmittel spülbar ist, um Beschichtungsmittelreste aus dem Druckkopf herauszuspülen. Der erfindungsgemäße Druckkopf weist in Übereinstimmung mit dem Stand der Technik eine Beschichtungsmittelzuführung auf, um das zu applizierende Beschichtungsmittel dem Druckkopf zu¬ zuführen. Darüber hinaus weist der erfindungsgemäße Druckkopf vorzugsweise auch eine separate Spülmittelzuführung auf, um ein Spülmittel zuzuführen. Hierbei ist zu erwähnen, dass die Beschichtungsmittelzuführung vorzugsweise von der Spülmittelzuführung getrennt ist, so dass der Druckkopf für die Zufüh¬ rung des Beschichtungsmittels einerseits und für die Zufüh¬ rung des Spülmittels andererseits vorzugsweise getrennte Ein- lässe aufweist. The invention comprises the general technical teaching of technically designing the print head such that a color change is made possible in the coating operation. This is achieved by virtue of the fact that the print head can be rinsed with a rinsing agent during a color change in order to rinse off coating agent residues from the print head. The print head according to the invention has in accordance with the prior art with a coating agent feed, to carry out the coating agent to be applied to the print head ¬. In addition, the print head according to the invention preferably also has a separate detergent supply to supply a detergent. Here, it should be mentioned that the coating-agent feed is preferably separated from the flushing agent supply, so that the print head for the Zufüh ¬ tion of the coating agent on the one hand and for the Zufüh ¬ tion of the rinsing agent other hand, preferably has separate input lässe.
Bei wenigen Farben könnte ein Farbschlauch (Beschichtungsmittelzuführung) pro Farbe am Applikator (Druckkopf) angeschlos- sen sein (Integrated Color Changer Technik) . Dann gibt es im oder am Applikator einen Spülmittelanschluss und einen With only a few colors, one color hose (coating agent feed) per color could be connected to the applicator (print head) (integrated color changer technique). Then there is in or on the applicator a detergent connection and a
Pulsluftanschluss . Diese werden dann zum Spülen benutzt. Pulse air connection. These are then used for rinsing.
Darüber hinaus weist der erfindungsgemäße Druckkopf vorzugs¬ weise auch eine Rückführung auf, um Beschichtungsmittel und/oder Spülmittel zurückzuführen und zwar wahlweise in eine Ringleitung oder in eine Entsorgung. Der erfindungsgemäße Druckkopf weist also neben den getrennten Anschlüssen für die Zuführung des Beschichtungsmittels und des Spülmittels vor¬ zugsweise auch einen weiteren getrennten Anschluss auf, um Beschichtungsmittel bzw. Spülmittel zurückzuführen. In addition, the print head according to the invention preference ¬ as well as a return on to coating compositions and / or due detergent namely either in a ring line or into a disposal. Thus, the print head according to the invention has, in addition to the separate connections for the supply of the coating agent and the rinsing agent before ¬ preferably also includes a further separate connection to return coating agent or detergent.
Der Rückführstrom in die Rückführung wird hierbei vorzugsweise durch ein steuerbares Rückführventil gesteuert, das als eigenmediumbetätigtes Rückführventil oder auch als Proportio¬ nalventil ausgeführt sein kann. Derartige Ventiltypen sind an sich aus dem Stand der Technik bekannt und müssen deshalb nicht näher beschrieben werden. In einem bevorzugten Ausführungsbeispiel der Erfindung weist der Druckkopf mehrere Düsen auf, um das Beschichtungsmittel abzugeben. Den einzelnen Düsen ist hierbei vorzugsweise jeweils ein Steuerventil zugeordnet, um die Beschichtungsmit- telabgabe durch die jeweilige Düse zu steuern. Die vorstehend erwähnte Spülmittelzuführung weist dann vorzugsweise Zweig¬ leitungen auf, die zu den einzelnen Steuerventilen führen, so dass alle Steuerventile des Druckkopfs gleichzeitig mit dem Spülmittel gespült werden können. The recycle stream to the recirculation is in this case preferably controlled by a controllable feedback valve which can be designed as a self-medium operated recirculation valve or as a proportio ¬ nalventil. Such valve types are known per se from the prior art and therefore need not be described in detail. In a preferred embodiment of the invention, the printhead has a plurality of nozzles to deliver the coating agent. In each case, a control valve is assigned to the individual nozzles in each case in order to control the coating agent delivery through the respective nozzle. The above-mentioned detergent feed then preferably comprises ¬ branch lines leading to the individual control valves so that all of the control valves of the printhead may be rinsed with the rinsing agent simultaneously.
Vorzugsweise sind die einzelnen Zweigleitungen der Spülmit¬ telzuführung so ausgelegt, dass das zugeführte Spülmittel gleichmäßig auf die Zweigleitungen zu den Steuerventilen verteilt wird, so dass die einzelnen Steuerventile im Wesentli- chen mit der gleichen Spülmittelmenge gespült werden. Preferably, the individual branches of the Spülmit ¬ telzuführung are designed so that the supplied detergent is distributed evenly on the branch lines to the control valves, so that the individual control valves are flushed essentially with the same amount of detergent.
In dem bevorzugten Ausführungsbeispiel der Erfindung weist der Druckkopf mindestens eine Düse zur Abgabe des Beschich- tungsmittels und ein zugehöriges Steuerventil zur Steuerung der Beschichtungsmittelabgabe durch die Düse auf, wie bereits vorstehend kurz erläutert wurde. Das Steuerventil kann hier¬ bei wie bei der eingangs beschriebenen bekannten Konstruktion eine elektrische Spule aufweisen, die auf ein Spulenrohr auf¬ gewickelt sein kann. Es wurde bereits eingangs zum Stand der Technik erläutert, dass sich in diesem Spulenrohr Beschich- tungsmittelreste ablagern können, was zum einen die Funkti¬ onsfähigkeit des Steuerventils beeinträchtigen und zum ande¬ ren die Farbwechselfähigkeit verhindern kann. Bei dem erfindungsgemäßen Druckkopf mündet die Spülmittelzuleitung deshalb vorzugsweise in das Spulenrohr, um das Innere des Spulenrohrs zu spülen. In the preferred embodiment of the invention, the printhead has at least one nozzle for dispensing the coating agent and an associated control valve for controlling the coating agent delivery through the nozzle, as already briefly explained above. The control valve may here at ¬ comprise an electrical coil as in the described known construction, which can be wound on a bobbin tube on ¬. It has already been explained in the introduction to the art that can be deposited in this coil tube coating medium residues, which on the one hand affect the functi ¬ onsfähigkeit the control valve and to ande ren ¬ can prevent the color change capability. In the printhead according to the invention, therefore, the flushing agent supply line preferably opens into the coil tube in order to flush the interior of the coil tube.
Hierbei ist zu erwähnen, dass das Spulenrohr - wie bei dem eingangs beschriebenen herkömmlichen Steuerventil - Vorzugs- weise einen kreisförmigen Innenquerschnitt aufweist und einen Spulenkern enthält. Hierbei kann es vorteilhaft sein, wenn der Spulenkern einen Profilquerschnitt aufweist, der den Innenquerschnitt des Spulenrohrs nicht vollständig ausfüllt, um zwischen dem Spulenrohr und dem Spulenkern Platz zu lassen für das Spülmittel, damit das Spülmittel in axialer Richtung durchströmen kann. Beispielsweise kann der Spulenkern hierzu einen sternförmigen Profilquerschnitt aufweisen mit radial abstehenden und in axialer Richtung verlaufenden Rippen, so dass das Spülmittel zwischen den Rippen des Spulenkerns in axialer Richtung strömen kann. It should be noted that the coil tube - as in the conventional control valve described above - preferred has a circular inner cross-section and contains a coil core. It may be advantageous if the coil core has a profile cross section which does not completely fill the inner cross section of the coil tube in order to leave room between the coil tube and the coil core for the detergent, so that the detergent can flow in the axial direction. For example, the coil core can for this purpose have a star-shaped profile cross-section with radially projecting ribs extending in the axial direction, so that the flushing agent can flow in the axial direction between the ribs of the coil core.
Alternativ besteht die Möglichkeit, dass der Spulenkern in seiner Mantelfläche eine Spülnut aufweist, die beispielsweise axial, in Umfangsrichtung oder spiralförmig verlaufen kann. Alternatively, there is the possibility that the coil core has in its lateral surface a flushing groove, which may extend, for example, axially, in the circumferential direction or spirally.
Ferner können in dem Spulenkern aber auch axial verlaufende Spülkanäle angeordnet sein. Ein weiteres Beispiel sieht vor, dass der Profilquerschnitt des Spulenkerns gitterförmig ist und von dem Spülmittel durchströmt werden kann. Furthermore, axially extending flushing channels can also be arranged in the coil core. Another example provides that the profile cross section of the spool core is grid-shaped and can be flowed through by the rinsing agent.
Weiterhin ist zu erwähnen, dass der Spulenkern vorzugsweise gegenüber dem Spulenrohr mit einer Dichtung abgedichtet ist, insbesondere mit einer Druckfestigkeit von mehr als 2bar, 4bar oder 6bar. It should also be mentioned that the coil core is preferably sealed with respect to the coil tube with a seal, in particular with a compressive strength of more than 2 bar, 4 bar or 6 bar.
Es wurde bereits vorstehend kurz erwähnt, dass der Druckkopf mehrere Steuerventile aufweisen kann, die alle gespült werden können. Dabei weisen die einzelnen Steuerventile in der Regel jeweils ein Spulenrohr auf, wobei die Spülmittelzuführung dann in sämtliche Spulenrohre mündet, um alle Spulenrohre spülen zu können. Ferner ist zu erwähnen, dass das Steuerventil in der Regel - wie bei dem eingangs beschriebenen bekannten Steuerventil - einen verschiebbaren Anker aufweist, der in Abhängigkeit von der Bestromung der Spule verschoben wird und in Abhängigkeit von seiner Stellung die Düse verschließt oder freigibt. It has already been mentioned briefly above that the print head can have a plurality of control valves, all of which can be rinsed. In this case, the individual control valves usually each have a coil tube, wherein the detergent feed then opens into all the coil tubes to flush all the coil tubes can. It should also be mentioned that the control valve generally has a displaceable armature, as in the case of the known control valve described above, which is displaced as a function of the energization of the coil and closes or releases the nozzle as a function of its position.
Dieser Anker verläuft vorzugsweise auf einem Teil seiner Län¬ ge koaxial in dem Spulenrohr und weist vorzugsweise einen axial durchlässigen Profilquerschnitt auf, damit Spülmittel zwischen dem Anker und der Innenwand des Spulenrohrs strömen kann. Hierzu weist der Anker vorzugsweise einen nicht¬ kreisförmigen Profilquerschnitt auf, der den kreisförmigen Innenquerschnitt des Spulenrohrs nicht vollständig ausfüllt und deshalb eine axiale Spülmittelströmung erlaubt. Bei¬ spielsweise kann der Profilquerschnitt des Ankers sternförmig oder kreuzförmig sein. This armature preferably runs on a part of its Län ¬ ge coaxially in the coil tube and preferably has an axially permeable profile cross section, so that flushing agent between the armature and the inner wall of the coil tube can flow. For this purpose, preferably, the anchor on a non ¬ circular profile cross-section which does not completely fill the circular inner cross section of the coil tube, and therefore an axial flow detergent allowed. In ¬ example, the profile cross section of the armature can be star-shaped or cross-shaped.
In einer Variante der Erfindung mündet die Spülmittelzufüh- rung in axialer Richtung zwischen dem Anker und dem Spulenkern in das Spulenrohr. In a variant of the invention, the rinsing agent supply opens into the coil tube in the axial direction between the armature and the coil core.
In einer anderen Variante der Erfindung mündet die Spülmittelzuführung dagegen in axialer Richtung im Bereich des Spu- lenkerns in das Spulenrohr, insbesondere an dem dem bewegli¬ chen Anker abgewandten Ende des Düsenrohrs. In another variant of the invention, however, the detergent feed opens in the axial direction in the region of the SPU lenkerns into the coil pipe, in particular on the side remote from the bewegli ¬ chen anchor end of the nozzle tube.
In einer anderen Variante der Erfindung ist der bewegliche Anker in einem spülmitteldurchlässigen Führungskäfig angeord- net, insbesondere in einem geschlitzten Zylinder. Dies bietet den Vorteil, dass der bewegliche Anker bei einem Spülvorgang gespült werden kann, wodurch Beschichtungsmittelablagerungen an dem Anker vermieden werden. In einer anderen Variante der Erfindung weist der verschiebbare Anker eine mittige Führungsbohrung auf, wobei ein Führungsstift in die Führungsbohrung hineinragt. Dadurch wird eine Linearführung bewirkt, die jedoch ebenfalls gespült wer- den kann. In another variant of the invention, the movable armature is arranged in a detergent-permeable guide cage, in particular in a slotted cylinder. This offers the advantage that the movable armature can be rinsed during a rinsing process, whereby coating agent deposits on the armature are avoided. In another variant of the invention, the displaceable armature has a central guide bore, wherein a guide pin projects into the guide bore. This causes a linear guide, which however can also be rinsed.
In einem anderen Ausführungsbeispiel der Erfindung ist eine flexible Membran vorgesehen, die das Steuerventil von der Be- schichtungsmittelzuführung trennt, so dass das Steuerventil durch die Membran vor einem Kontakt mit einem Beschichtungs- mittel geschützt wird. Hierbei muss das Steuerventil selbst also überhaupt nicht gespült werden, da das Steuerventil selbst überhaupt nicht in Kontakt mit dem jeweiligen Be- schichtungsmittel kommt. Vielmehr soll nur die glatte Be- schichtungsmittelseitige Oberfläche der Membran gespült wer¬ den, was jedoch sehr einfach und effizient möglich ist, da die glatte Membranoberfläche kaum Ansatzpunkte für Lackabla¬ gerungen bildet. Der erfindungsgemäße Druckkopf ermöglicht vorzugsweise einen schnellen Farbwechsel innerhalb einer Farbwechseldauer von weniger als lh, 20min, 10min, 30s, 10s oder sogar weniger als 5s . Hierbei werden auch möglichst geringe Farbwechselverluste an¬ gestrebt, die bei dem erfindungsgemäßen Druckkopf vorzugswei¬ se kleiner sind als 51, 21, 200ml, 20ml, 10ml, 5ml oder sogar kleiner als 2ml. Dies führt auch vorteilhaft zu einem sehr geringeren Spülmit¬ telverbrauch bei einem Farbwechsel, wobei der Spülmittelverbrauch vorzugsweise kleiner ist als 101, 51, 21, 200ml, 100ml, 50ml, 20ml oder sogar kleiner als 10ml. Ferner besteht im Rahmen der Erfindung auch die Möglichkeit, dass der Druckkopf mehrere getrennte Spülmittelzuführungen aufweist, um verschiedene Spülmittel zuzuführen, die bei¬ spielsweise an das jeweilige Beschichtungsmittel angepasst sein können. In another embodiment of the invention, a flexible membrane is provided which separates the control valve from the coating agent supply, so that the control valve is protected by the membrane from contact with a coating agent. In this case, therefore, the control valve itself does not have to be flushed at all, since the control valve itself does not come into contact with the respective coating agent at all. Rather, only the smooth loading coating means-side surface of the membrane rinsed ¬ to, but this is very simple and efficient possible because the smooth membrane surface forms wrestled barely starting points for Lackabla ¬. The printhead according to the invention preferably allows a fast color change within a color change time of less than 1h, 20min, 10min, 30s, 10s or even less than 5s. In this case also the smallest possible color change losses at ¬ are sought, which are smaller in the inventive print head vorzugswei ¬ se than 51, 21, 200ml, 20ml, 10ml, 5ml, or even less than 2 ml. This also leads advantageously to a very low Spülmit ¬ telverbrauch in a color change, the detergent consumption is preferably less than 101, 51, 21, 200ml, 100ml, 50ml, 20ml or even less than 10ml. Further, in the context of the invention is also the possibility that the print head has a plurality of separate feeds detergent in order to supply various detergents, which may be the game as adapted to the respective coating agents in ¬.
Darüber hinaus ist zu erwähnen, dass der Druckkopf mit seinen medienführenden Teilen vorzugsweise so konstruiert ist, dass die medienführenden Teile totraumfrei und/oder hinterschnei- dungsfrei sind, um die Spülbarkeit zu verbessern. In addition, it should be mentioned that the print head with its media-carrying parts is preferably constructed in such a way that the media-carrying parts are free of dead space and / or undercut in order to improve the rinsability.
Zur Verbesserung der Spülbarkeit besteht auch die Möglichkeit, dass der Druckkopf an seinen Oberflächen, die mit dem Beschichtungsmittel in Kontakt kommen, mit einer reinigungs- fördernden Beschichtung versehen ist, wobei eine solche Be- schichtung auch als "Easy-to-clean-Beschichtung" bekannt ist. To improve the flushability, there is also the possibility that the print head is provided with a cleaning-promoting coating on its surfaces which come into contact with the coating agent, such a coating also being provided as an "easy-to-clean coating". is known.
Darüber hinaus ist zu bemerken, dass die Erfindung nicht nur Schutz beansprucht für den vorstehend beschriebenen erfin- dungsgemäßen Druckkopf als einzelnes Bauteil bzw. als Aus¬ tauschteil. Vielmehr beansprucht die Erfindung auch Schutz für eine komplette Beschichtungseinrichtung mit einem solchen Druckkopf . Darüber hinaus umfasst die erfindungsgemäße Beschichtungsein¬ richtung vorzugsweise auch einen Farbwechsler, wie beispielsweise einen Linearfarbwechsler, einen Rotationsfarbwechsler, einen in den Druckkopf integrierten Farbwechsler oder einen A/B-Farbwechsler . Diese Typen von Farbwechslern sind an sich aus dem Stand der Technik bekannt und müssen deshalb nicht weiter beschrieben werden. In addition, it should be noted that the invention not only protection is claimed for the above-described inventions to the invention the print head as a single component or as part off ¬ exchange. Rather, the invention also claims protection for a complete coating device with such a printhead. In addition, the coating device according to the invention preferably also comprises a color changer, such as a linear color changer, a rotary color changer, a color changer integrated in the print head or an A / B color changer. These types of color changers are known per se from the prior art and therefore need not be further described.
Schließlich umfasst die Erfindung auch ein entsprechendes Be¬ triebsverfahren für einen solchen Druckkopf, wobei sich die einzelnen Verfahrensschritte bereits aus der vorstehenden Be¬ schreibung ergeben und deshalb nicht näher beschrieben werden müssen . Allerdings ist zu erwähnen, dass das Spülmittel ein Univer¬ salspülmittel sein kann, das sowohl für wasserbasierten Lack als auch für Lösemittellack geeignet ist. Darüber hinaus kann das Spülmittel ein VOC-freies (VOC: volatile organic Com¬ pounds) Spülmittel sein. Finally, the invention also comprises a corresponding Be ¬ operating method for such a print head, which individual process steps already result from the above Be ¬ description and therefore need not be described in detail. However, it should be mentioned that the detergent can be a Univer ¬ salspülmittel suitable for both water-based paint as well as solvent-based paint. In addition, the rinsing agent can be a VOC-free (VOC: volatile organic com- pounds) rinsing agent.
Bei dem Spülvorgang kann der Druckkopf zusammen mit dem Spülmittel auch oder abwechselnd mit Pulsluft gespült werden. During the rinsing process, the print head can also be rinsed together with the rinsing agent or alternately with pulsed air.
Ferner besteht auch die Möglichkeit, dass dem Druckkopf zum Spülen ein Aerosol zugeführt wird. Furthermore, there is also the possibility that the printhead for rinsing an aerosol is supplied.
Weiterhin besteht im Rahmen der Erfindung die Möglichkeit, dass dem Druckkopf nacheinander verschiedene Spülmittel zuge¬ führt werden. Furthermore, it is within the scope of the invention, the possibility that the print head successively different rinsing agents are supplied ¬ leads.
In einer Variante des erfindungsgemäßen Betriebsverfahrens wird zunächst ein lösemittelbasierter Lack zugeführt und ap¬ pliziert. Anschließend wird der Druckkopf dann mit einem lö¬ semittelbasierten Spülmittel gespült, um Reste des lösemit- telbasierten Lacks auszuspülen. Optional kann dann noch ein Trennmittel zugeführt werden, beispielsweise Alkohol. Im nächsten Schritt wird dann ein Wasserlack zugeführt und ap¬ pliziert. Schließlich wird der Druckkopf dann mit einem was- serlackbasierten Spülmittel gespült, um Reste des Wasserlacks auszuspülen. In a variant of the operating method according to the invention, a solvent-based lacquer is first supplied and ap ¬ pliziert. The print head is then rinsed with a detergent lö ¬ semittelbasierten to flush remnants of the solvent-telbasierten varnish. Optionally, then a release agent can be supplied, for example alcohol. In the next step, a water-based paint is then supplied and ap ¬ pliziert. Finally, the print head is then rinsed with a water-based rinse-aid to rinse off residues of the water-based paint.
Die vorstehende Beschreibung erläutert einen Wechsel von ei¬ nem lösemittelbasierten Lack zu einem Wasserlack. Selbstverständlich ist auch umgekehrt ein Wechsel von einem Wasserlack auf einen lösemittelbasierten Lack möglich, was eine entsprechend geänderte Reihenfolge der vorstehend beschriebenen Ver¬ fahrensschritte erfordert. Nach einem Farbwechsel wird der Druckkopf vorzugsweise mit dem neuen Beschichtungsmittel angedrückt, d.h. befüllt. Dabei wird vorzugsweise auch eine definierte Lackmenge durch die Düse des Druckkopfs ausgebracht. Beim Betrieb des erfindungsgemäßen Druckkopfs besteht auch die Möglichkeit, dass alle bei einem Spülvorgang abgegebenen Fluide (Beschichtungsmittel und Spülmittel) für eine Entsor¬ gung aufgefangen werden. Ferner besteht auch die Möglichkeit, dass beim Farbwechsel auch die Außenfläche des Düsenkopfs gespült wird, um dort an¬ haftende Beschichtungsmittelreste zu entfernen. The above description explains a change from egg ¬ nem solvent-based paint to a water-based paint. Of course, conversely, a change from a water-based paint to a solvent-based paint possible, which requires a correspondingly changed order of the above-described method steps ¬ Ver. After a color change, the print head is preferably pressed with the new coating agent, ie filled. In this case, preferably, a defined amount of paint is discharged through the nozzle of the print head. During operation of the printhead according to the invention is also the possibility that all fluids (coating agents and detergents) emitted when a rinsing process are collected for a Dispose of ¬ supply. Further, there is also the possibility that the outer surface of the nozzle head is rinsed during the color change to remove there at ¬ adherent coating agent residues.
Zu dem Spülvorgang ist weiterhin zu erwähnen, dass das Spül- mittel nacheinander oder abwechselnd in die Rückführung oder durch die Düse abgeführt werden kann. Darüber hinaus besteht optional auch die Möglichkeit eines Spülens mit einem Gemisch aus Spülmittel und Pulsluft. Andere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet oder werden nachstehend zusammen mit der Beschreibung der bevorzugten Ausführungsbeispiele der Erfindung anhand der Figuren näher erläutert. Es zeigen: Regarding the rinsing process, it should also be mentioned that the rinsing agent can be discharged successively or alternately into the return or through the nozzle. In addition, there is also the option of optional rinsing with a mixture of detergent and pulse air. Other advantageous developments of the invention are characterized in the subclaims or are explained in more detail below together with the description of the preferred embodiments of the invention with reference to FIGS. Show it:
Figur 1 eine schematische Darstellung eines herkömmlichen Figure 1 is a schematic representation of a conventional
Steuerventils in einem Druckkopf zur Lackapplikati¬ on, Figur 2 eine schematische Darstellung des Steuerventils mit einer Spülmittelzuführung, eine Abwandlung von Figur 2, bei der das Spülmittel über die Beschichtungsmittelzuführung zugeführt wird, Control valve in a print head for Lackapplikati ¬ on, FIG. 2 shows a schematic illustration of the control valve with a flushing agent feed, a modification of FIG. 2, in which the flushing agent is supplied via the coating agent feed,
Figur 4 eine weitere Abwandlung mit einem spülbaren Führungskäfig für den Anker, 4 shows a further modification with a flushable guide cage for the anchor,
Figur 5 eine weitere Abwandlung mit einem spülbaren Führungsstößel, 5 shows a further modification with a flushable guide tappet,
Figur 6 eine weitere Abwandlung mit einer Spülmittelzufüh- rung am oberen Ende des Spulenrohrs, FIG. 6 shows a further modification with a flushing agent supply at the upper end of the coil tube,
Figur 7 eine Abwandlung mit einer flexiblen Membran zur Figure 7 shows a modification with a flexible membrane for
Trennung des Steuerventils von den medienführenden Kanälen,  Separation of the control valve from the media-carrying channels,
Figur 8 eine schematische Darstellung eines erfindungsgemä¬ ßen Druckkopfs mit einem vorgeschalteten Farbwechs¬ ler und einer Rückführung, sowie Figur 9 eine schematische Darstellung zur Versorgung von mehreren Steuerventilen mit Spülmittel und Be- schichtungsmittel . Figure 8 is a schematic representation of an inventive ¬ SEN printhead with an upstream color Wechs ¬ ler and a rear guide, and Figure 9 is a schematic diagram for supplying a plurality of control valves with detergent and loading coating agents.
Im Folgenden wird nun die schematische Darstellung eines er- findungsgemäßen Steuerventils in Figur 2 beschrieben, wobei das Steuerventil in einem Druckkopf angeordnet ist. Dieses Ausführungsbeispiel eines erfindungsgemäßen Steuerventils stimmt teilweise mit dem eingangs beschriebenen und in Fi¬ gur 1 dargestellten herkömmlichen Steuerventil überein, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird, wobei für entsprechende Einzel¬ heiten dieselben Bezugszeichen verwendet werden. Eine Besonderheit dieses Ausführungsbeispiels besteht darin, dass das Steuerventil eine Spülmittelzuführung 13 aufweist, die in den Innenraum 12 des Spulenrohrs 5 mündet. Über diese Spülmittelzuführung 13 kann also Spülmittel zugeführt werden, um das Steuerventil bei einem Farbwechsel mit einem Spülmit- tel zu spülen. Dadurch ist ein Farbwechsel im laufenden Betrieb innerhalb kurzer Zeit möglich. The schematic representation of a control valve according to the invention in FIG. 2 will now be described below, wherein the control valve is arranged in a print head. This embodiment of a control valve according to the invention are partly consistent with the initially described and illustrated in Fi gure 1 ¬ conventional control valve, so that reference is made to avoid repetition of the foregoing description, are used for corresponding individual units ¬ same reference numerals. A special feature of this embodiment is that the control valve has a detergent feed 13, which opens into the interior 12 of the coil tube 5. By means of this flushing agent supply 13, flushing means can therefore be supplied in order to flush the control valve with a flushing agent during a color change. As a result, a color change during operation within a short time is possible.
Darüber hinaus weist das Steuerventil in diesem Ausführungs¬ beispiel eine besondere Bauform der Dichtung 8 zwischen dem Spulenkern 7 und dem Spulenrohr 5 auf, wobei die Dichtung 8 eine Druckfestigkeit von mehr als 2bar ermöglicht. In addition, the control valve in this embodiment ¬ example, a special design of the seal 8 between the spool core 7 and the coil tube 5, wherein the seal 8 allows a compressive strength of more than 2bar.
Figur 3 zeigt eine schematische Darstellung eines weiteren Ausführungsbeispiels eines erfindungsgemäßen Steuerventils in einem Druckkopf, wobei dieses Ausführungsbeispiel teilweise mit dem vorstehend beschriebenen Ausführungsbeispiel überein¬ stimmt, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird, wobei für entspre¬ chende Einzelheiten dieselben Bezugszeichen verwendet werden. Is 3 shows a schematic representation of a further embodiment of a control valve of the invention in a print head, which embodiment partially coincides ¬ with the above-described embodiment, so that reference is made to avoid repetition of the foregoing description, under the same entspre ¬ sponding details reference numeral be used.
Eine Besonderheit dieses Ausführungsbeispiels besteht darin, dass der verschiebbare Anker 9 frei von Spülmittel umströmt werden kann, so dass das Spülmittel auch den Innenraum 12 des Spulenrohrs 5 spülen kann. Hierzu weist der Anker 9 einen kreuzförmigen Profilquerschnitt mit axial verlaufenden Rippen auf, so dass das Spülmittel zwischen den Rippen des Ankers 9 in axialer Richtung in den Innenraum 12 des Spulenrohrs 5 strömen kann. Das Spülmittel wird hierbei also nicht - wie bei Figur 2 - über die Spülmittelzuführung 13 zugeführt, son- dern über die Beschichtungsmittelzuführung 4, die also abwechselnd zur Zuführung von Beschichtungsmittel und zur Zu¬ führung von Spülmitteln dient. Der Spulenkern 7 ist hierbei gegenüber dem Innenraum 12 durch die Dichtung 8 abgedichtet. A special feature of this embodiment is that the displaceable armature 9 can be flowed around free of detergent, so that the detergent can also flush the interior 12 of the coil tube 5. For this purpose, the armature 9 has a cross-shaped profile cross section with axially extending ribs, so that the flushing agent between the ribs of the armature 9 can flow in the axial direction into the interior 12 of the coil tube 5. The rinsing agent is thus not supplied via the rinsing agent supply 13, as in FIG. phase but the coating-agent feed 4, which are alternately used for the supply of coating material and to ¬ management of detergents. The coil core 7 is in this case sealed from the interior 12 by the seal 8.
Figur 4 zeigt ein weiteres Ausführungsbeispiel, das ebenfalls weitgehend mit dem vorstehend beschriebenen Ausführungsbei¬ spiel übereinstimmt, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung Bezug genommen wird, wo- bei für entsprechende Einzelheiten dieselben Bezugszeichen verwendet werden. Figure 4 shows a further embodiment which also largely corresponds to the above-described Ausführungsbei ¬ play, so that reference is made to avoid repetition of the foregoing description, WO-used in the same reference numerals for corresponding details.
Eine Besonderheit dieses Ausführungsbeispiels besteht darin, dass der verschiebbare Anker 9 in einem spülbaren Führungskä- fig 14 angeordnet ist, der aus einem geschlitzten Zylinder besteht, so dass das Innere des Führungskäfigs 14 gespült werden kann. Dabei dichtet die Dichtung 8 den Innenraum des Spulenrohrs 5 gegen den medienführenden Bereich ab. Figur 5 zeigt noch ein weiteres Ausführungsbeispiel, so dass wieder zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird, wobei für entsprechende Einzel¬ heiten dieselben Bezugszeichen verwendet werden. Hierbei weist der Anker 9 mittig eine Führungsbohrung 15 auf, in die ein Führungsstift 16 eingreift, wobei die Passung aus der Führungsbohrung 15 und dem Führungsstift 16 ebenfalls für Spülmittel zugänglich ist. Darüber hinaus dichtet die Dichtung 8 hierbei den Ringspalt zwischen dem Spulenrohr 5 und dem Spulenkern 7 ab. A special feature of this embodiment is that the displaceable armature 9 is arranged in a flushable guide cage 14, which consists of a slotted cylinder, so that the interior of the guide cage 14 can be rinsed. The seal 8 seals the interior of the coil tube 5 against the media-carrying area. Figure 5 shows yet another embodiment, so that again made to avoid repetition of the foregoing description, are used for corresponding individual units ¬ same reference numerals. Here, the armature 9 in the center of a guide bore 15, into which a guide pin 16 engages, wherein the fit of the guide bore 15 and the guide pin 16 is also accessible for detergent. In addition, the seal 8 in this case seals the annular gap between the coil tube 5 and the spool core 7.
Das Ausführungsbeispiel gemäß Figur 6 stimmt wieder teilweise mit dem Ausführungsbeispiel gemäß Figur 2 überein, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird, wobei für entsprechende Einzelhei¬ ten dieselben Bezugszeichen verwendet werden. Eine Besonderheit dieses Ausführungsbeispiels besteht darin, dass die Spülmittelzuführung 13 hierbei nicht zwischen dem Spulenkern 7 und dem Anker 9 in den Innenraum 12 des Spulenrohrs einmündet. Vielmehr mündet die Spülmittelzuführung 13 hierbei am oberen Ende des Spulenrohrs 5 in das Spulenrohr. The exemplary embodiment according to FIG. 6 again partially agrees with the exemplary embodiment according to FIG. 2, so that to avoid repetition, reference is made to the above description, wherein the same reference numerals are used for corresponding Einzelhei ¬ th. A special feature of this embodiment is that the detergent supply 13 in this case does not open between the coil core 7 and the armature 9 in the interior 12 of the coil tube. Rather, the detergent feed 13 in this case opens at the upper end of the coil tube 5 in the coil tube.
Wichtig ist hierbei, dass der Spulenkern 7 den freien Innenquerschnitt des Spulenrohrs 5 nicht vollständig ausfüllt, da¬ mit das Spülmittel von der oben gelegenen Spülmittelzuführung 13 nach unten in den Innenraum 12 strömen kann. What is important here is that the core 7 does not completely fill the free cross section of the inner coil tube 5 because ¬ can flow into the interior space 12 with the detergent from the detergent located above feeder 13 downward.
Figur 7 zeigt eine weitere Abwandlung eines spülbaren Steuerventils, das hierzu eine flexible Membran 17 vorsieht, die das Steuerventil von den medienführenden Teilen in der Be- schichtungsmittelzuführung 4 trennt. Hierbei muss das Steuer- ventil selbst also nicht mit Spülmittel gespült werden, da das Steuerventil selbst überhaupt nicht in Kontakt kommt mit dem jeweiligen Lack. Vielmehr wird nur die Membran 17 auf ihrer Beschichtungsmittelseite von dem jeweiligen Lack berührt, so dass auch nur diese Seite der Membran 17 gespült werden muss, was ohne weiteres möglich ist, indem über die Beschich- tungsmittelzuführung Spülmittel zugeführt wird. FIG. 7 shows a further modification of a flushable control valve, which for this purpose provides a flexible membrane 17, which separates the control valve from the media-carrying parts in the coating agent supply 4. In this case, the control valve itself does not have to be flushed with flushing agent, since the control valve itself does not come into contact with the respective lacquer at all. Rather, only the membrane 17 is touched on its coating medium side of the respective paint, so that only this side of the membrane 17 must be rinsed, which is readily possible by tesmittelzuführung on the coating agent supplied detergent.
Figur 8 zeigt eine stark vereinfachte schematische Darstel¬ lung einer erfindungsgemäßen Beschichtungseinrichtung mit einer Beschichtungsmittelzuführung 18, einem Farbwechsler 19, einem erfindungsgemäßen Druckkopf 20, einem Rückführventil 21 und einer Rückführung 22. Der Farbwechsler 19 kann dem Druckkopf 20 hierbei verschie¬ denfarbige Beschichtungsmittel zuführen, wobei der Druckkopf 20 wahlweise über eine nicht dargestellte Spülmittelzuführung oder über die Beschichtungsmittelzuführung 18 mit Spülmittel gespült werden kann. Figure 8 shows a greatly simplified schematic depicting ¬ development of a coating device according to the invention with a coating agent feed 18, a color changer 19, a print head 20 according to the invention, a recirculation valve 21 and a recirculation 22nd The color changer 19 may perform the print head 20 in this case various ¬ denfarbige coating agent, wherein the print head 20 may be purged via a non-illustrated detergent feeder or on the coating agent feeder 18 with detergent optional.
Bei einem Spülvorgang anfallende Reste aus Beschichtungsmit¬ tel und Spülmittel können dann in die Rückführung 22 abgeführt werden. In a flushing operation occurring residues from Beschichtungsmit ¬ tel and detergent may then be discharged into the recirculation 22nd
Schließlich zeigt Figur 9 eine schematische Darstellung eines erfindungsgemäßen Druckkopfs mit mehreren Steuerventilen 23.1, 23.4, die über eine gemeinsame Beschichtungsmittelzu- führung 24 mit mehreren Zweigleitungen 25 mit Beschichtungsmittel versorgt werden. Finally, FIG. 9 shows a schematic representation of a print head according to the invention with a plurality of control valves 23.1, 23.4, which are supplied with coating means via a common coating agent feed 24 with a plurality of branch lines 25.
Darüber hinaus weist die Beschichtungseinrichtung noch eine gemeinsame Spülmittelzuführung 26 auf, die über jeweils eine Zweigleitung 27 mit den einzelnen Steuerventilen 23.1-23.4 verbunden ist, so dass alle Steuerventile 23.1-23.4 des In addition, the coating device still has a common detergent supply 26, which is connected via a respective branch line 27 with the individual control valves 23.1-23.4, so that all the control valves 23.1-23.4 of
Druckkopfs mit Spülmittel gespült werden können. Printhead can be rinsed with detergent.
Die Erfindung ist nicht auf die vorstehend beschriebenen be¬ vorzugten Ausführungsbeispiele beschränkt. Vielmehr ist eine Vielzahl von Varianten und Abwandlungen möglich, die ebenfalls von dem Erfindungsgedanken Gebrauch machen und deshalb in den Schutzbereich fallen. Insbesondere beansprucht die Erfindung auch Schutz für den Gegenstand und die Merkmale der Unteransprüche unabhängig von den jeweils in Bezug genommenen Ansprüchen und insbesondere auch ohne die Merkmale des Haupt¬ anspruchs. Die Erfindung umfasst also verschiedene Erfin¬ dungsaspekte, die unabhängig voneinander Schutz genießen. Bezugs zeichenliste : The invention is not limited to the above-described be ¬ preferred embodiments. Rather, a variety of variants and modifications is possible, which also make use of the inventive idea and therefore fall within the scope. In particular, the invention also claims protection for the subject matter and the features of the dependent claims independently of the claims taken in each case and in particular without the features of the main ¬ claim. Thus, the invention includes various aspects OF INVENTION ¬ dung enjoying independently protection. Reference sign list:
1 Düsenplatte 1 nozzle plate
2 Düsenöffnung  2 nozzle opening
3 Basisplatte  3 base plate
4 Beschichtungsmittel Zuführung  4 coating agent feed
5 Spulenrohr  5 coil tube
6 Spule  6 coil
7 Spulenkern  7 spool core
8 Dichtung zwischen Spulenkern und Spulenrohr 8 Seal between coil core and coil tube
9 Anker (Ventilnadel) 9 anchors (valve needle)
10 Dichtung zum Abdichten der Düsenöffnung  10 seal for sealing the nozzle opening
11 Rückstellfeder  11 return spring
12 Innenraum des Spulenrohr  12 interior of the coil tube
13 Spülmittel Zuführung  13 detergent feed
14 Spülbarer Führungskäfig für den Anker  14 Flushable guide cage for the anchor
15 Führungsbohrung im Anker  15 pilot hole in the anchor
16 Führungsstift  16 guide pin
17 Membran  17 membrane
19 Farbwechsler  19 color changer
18 Beschichtungsmittel Zuführung  18 coating agent feed
20 Druckkopf  20 printhead
21 Rückführventil  21 return valve
22 Rückführung  22 feedback
23.1-23.4 Steuerventile  23.1-23.4 Control valves
24 Beschichtungsmittel Zuführung  24 coating agent feed
25 Zweigleitungen der Beschichtungsmittezuführung 25 branch lines of the coating center supply
26 Spülmittel Zuführung 26 detergent feed
27 Zweigleitungen der Spülmittelzuführung  27 branch lines of the detergent feed
-k -k -k -k -k -k -k -k -k

Claims

ANSPRÜCHE
1. Druckkopf zur Applikation eines Beschichtungsmittels auf ein Bauteil, insbesondere zur Lackierung eines Kraftfahr zeugkarosseriebauteils mit einem Lack, dadurch gekennzeichnet, dass der Druckkopf im Beschichtungsbetrieb einen Farb¬ wechsel ermöglicht und bei einem Farbwechsel mit einem Spül¬ mittel spülbar ist, um Beschichtungsmittelreste aus dem 1. printhead for applying a coating composition on a component, in particular for painting a motor vehicle body component with a paint, characterized in that the printhead in the coating operation a color change ¬ allows and in a color change with a rinsing ¬ medium is flushable to coating agent residues from the
Druckkopf herausauszuspülen. Rinse out printhead.
Druckkopf nach Anspruch 1, gekennzeichnet durch Printhead according to claim 1, characterized by
eine Beschichtungsmittelzuführung (4; 24) zur Zuführung des zu applizierenden Beschichtungsmittels und/oder zur Zuführung des Spülmittels, und/oder  a coating agent supply (4; 24) for supplying the coating agent to be applied and / or for supplying the rinsing agent, and / or
eine separate Spülmittelzuführung (13; 26) zur Zuführung des Spülmittels.  a separate detergent supply (13; 26) for supplying the detergent.
Druckkopf nach Anspruch 2, gekennzeichnet durch Printhead according to claim 2, characterized by
eine Rückführung (22) zur Rückführung des Beschichtungsmittels und/oder des Spülmittels, und  a return (22) for returning the coating agent and / or the rinsing agent, and
ein Rückführventil (21) zur Steuerung des Rückführstroms in die Rückführung, insbesondere  a return valve (21) for controlling the return flow into the return, in particular
bl) als eigenmediumbetätigtes Rückführventil oder b2) als Proportionalventil.  bl) as a self-medium operated return valve or b2) as a proportional valve.
4. Druckkopf nach Anspruch 2 oder 3, 4. Printhead according to claim 2 or 3,
dadurch gekennzeichnet, characterized,
a) dass der Druckkopf mehrere Düsen aufweist, um das Be- schichtungsmittel abzugeben, a) that the print head has a plurality of nozzles to deliver the coating agent,
b) dass der Druckkopf mehrere Steuerventile (23.1-23.4) aufweist, die den einzelnen Düsen (2) zugeordnet sind und die Beschichtungsmittelabgabe durch die einzelnen Düsen (2) steuern, b) that the print head has a plurality of control valves (23.1-23.4), which are associated with the individual nozzles (2) and control the coating agent delivery through the individual nozzles (2),
c) dass die Spülmittelzuführung (26) Zweigleitungen (27) zu den einzelnen Steuerventilen (23.1-23.4) aufweist, so dass alle Steuerventile (23.1-23.4) mit dem Spülmit¬ tel gespült werden. c) that the detergent supply (26) branch lines (27) to the individual control valves (23.1-23.4), so that all the control valves (23.1-23.4) are flushed with the Spülmit ¬ tel.
5. Druckkopf nach Anspruch 4, dadurch gekennzeichnet, dass die Zweigleitungen der Spülmittelzuführung (13; 26) so ausgelegt sind, dass das zugeführte Spülmittel gleichmäßig auf die Zweigleitungen zu den Steuerventilen verteilt wird, so dass die Steuerventile im Wesentlichen mit der gleichen Spülmittelmenge gespült werden. 5. A printhead according to claim 4, characterized in that the branch lines of the detergent supply (13; 26) are designed so that the supplied detergent is evenly distributed to the branch lines to the control valves, so that the control valves are flushed with substantially the same amount of detergent ,
6. Druckkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, 6. Printhead according to one of the preceding claims, characterized
a) dass der Druckkopf mindestens eine Düse (2) zur Abgabe des Beschichtungsmittels aufweist, a) that the print head has at least one nozzle (2) for dispensing the coating agent,
b) dass der Druckkopf mindestens ein Steuerventil (23.1- 23.4) aufweist zur Steuerung der Beschichtungsmittelab¬ gabe durch die mindestens eine Düse (2), b) that the print head has at least one control valve (23.1- 23.4) for controlling the Beschichtungsmittelab ¬ pick up the at least one nozzle (2),
c) dass das Steuerventil (23.1-23.4) eine elektrische Spu¬ le (6) aufweist, c) that the control valve (23.1-23.4) an electrical Spu ¬ le (6),
d) dass das mindestens eine Steuerventil (23.1-23.4) ein Spulenrohr (5) aufweist, auf das die Spule (6) außen aufgewickelt ist, d) that the at least one control valve (23.1-23.4) has a coil tube (5) on which the coil (6) is wound on the outside,
e) dass der Druckkopf eine Spülmittelzuführung (13; 26) aufweist zur Zuführung des Spülmittels, und e) that the print head has a rinsing agent supply (13, 26) for supplying the rinsing agent, and
f) dass die Spülmittelzuführung (13; 26) in das Spulenrohr f) that the detergent supply (13, 26) in the coil tube
(5) mündet und das Spülmittel in das Innere des Spulen¬ rohrs (5) leitet. (5) opens and the flushing agent into the interior of the coil ¬ pipe (5) passes.
7. Druckkopf nach Anspruch 6, dadurch gekennzeichnet, a) dass das Spulenrohr (5) einen kreisförmigen Innenquer- schnitt aufweist, 7. Printhead according to claim 6, characterized in that a) that the coil tube (5) is a circular Innenquer- having cut,
b) dass das Spulenrohr (5) in seinem Inneren einen Spulenkern (7) enthält. b) that the coil tube (5) contains a coil core (7) in its interior.
Druckkopf nach Anspruch 7, dadurch gekennzeichnet, dass der Spulenkern (7) einen Profilquerschnitt auf¬ weist, der den Innenquerschnitt des Spulenrohrs (5) nicht vollständig ausfüllt, um zwischen dem Spulenrohr (5) und dem Spulenkern (7) Platz zu lassen für das Spülmittel, und/oder Printhead according to claim 7, characterized in that the coil core (7) has a profile cross-section on ¬, which does not completely fill the internal cross section of the coil tube (5) between the coil tube (5) and the coil core (7) to leave room for the Rinsing agent, and / or
dass der Profilquerschnitt des Spulenkerns (7) stern¬ förmig ist, und/oder that the profile cross-section of the coil core (7) is star-shaped ¬, and / or
dass der Profilquerschnitt des Spulenkerns (7) in sei¬ ner Mantelfläche mindestens eine Spülnut aufweist, die vorzugsweise that the profile cross-section of the coil core (7) is in ¬ ner circumferential surface has at least one scavenging groove, which preferably
cl) axial,  cl) axially,
c2) in Umfangsrichtung oder  c2) in the circumferential direction or
c3) spiralförmig verläuft, und/oder  c3) runs in a spiral, and / or
dass der Profilquerschnitt des Spulenkerns (7) einen axial verlaufenden Spülkanal aufweist, und/oder  that the profile cross-section of the spool core (7) has an axially extending flushing channel, and / or
dass der Profilquerschnitt des Spulenkerns (7) gitter- förmig ist.  that the profile cross section of the spool core (7) is grid-shaped.
9. Druckkopf nach einem der Ansprüche 6 bis 8, dadurch kennzeichnet, dass der Spulenkern (7) gegenüber dem Spulen rohr (5) mittels einer Dichtung (8) abgedichtet ist, insbe sondere mit einer Druckfestigkeit von mehr als 2bar, 4bar, oder 6 bar. 9. Printhead according to one of claims 6 to 8, characterized indicates that the spool core (7) relative to the coil tube (5) by means of a seal (8) is sealed, in particular special with a compressive strength of more than 2bar, 4bar, or 6th bar.
10. Druckkopf nach Anspruch 7, 10. Printhead according to claim 7,
dadurch gekennzeichnet, characterized,
a) dass der Druckkopf mehrere Spulenrohre (5) aufweist, und a) that the print head has a plurality of coil tubes (5), and
b) dass von der Spülmittelzuführung (13; 26) Zweigleitun gen in alle Spulenrohre (5) abgehen, und/oder b) that of the detergent supply (13; 26) Zweigleitun go into all the coil tubes (5), and / or
c) dass die Spulenrohre (5) gemeinsam gespült werden kön¬ nen, und/oder c) that the bobbin tubes (5) are rinsed together Kgs ¬ NEN, and / or
d) dass die Spulenrohre (5) individuell einzeln gespült werden können. d) that the coil tubes (5) can be individually rinsed individually.
11. Druckkopf nach einem der Ansprüche 6 bis 10, 11. Printhead according to one of claims 6 to 10,
dadurch gekennzeichnet, characterized,
dass das mindestens eine Steuerventil (23.1-23.4) einen ver- schiebbaren Anker (9) aufweist, der in Abhängigkeit von der Bestromung der Spule verschoben wird und in Abhängigkeit von seiner Stellung die Düse verschließt oder freigibt. the at least one control valve (23.1-23.4) has a displaceable armature (9) which is displaced as a function of the energization of the coil and, depending on its position, closes or releases the nozzle.
12. Druckkopf nach Anspruch 11, dadurch gekennzeichnet, a) dass der Anker (9) auf einem Teil seiner Länge koaxial in dem Spulenrohr (5) verläuft, 12. A printhead according to claim 11, characterized in that a) that the armature (9) runs coaxially in the coil tube (5) over part of its length,
b) dass der Anker (9) einen axial durchlässigen Profilquerschnitt aufweist, um Spülmittel zwischen dem Anker (9) und der Innenwand des Spulenrohrs (5) durchleiten zu können, b) that the armature (9) has an axially permeable profile cross-section in order to be able to pass flushing agent between the armature (9) and the inner wall of the coil tube (5),
c) dass der Anker (9) vorzugsweise einen nicht-kreis¬ förmigen Profilquerschnitt aufweist, insbesondere einen sternförmigen oder kreuzförmigen Profilquerschnitt, um Platz zu lassen für das Beschichtungsmittel c) that the armature (9) preferably has a non-circular ¬ shaped profile cross-section, in particular a star-shaped or cross-shaped profile cross-section, to leave room for the coating agent
13. Druckkopf nach Anspruch 11 oder 12, 13. Printhead according to claim 11 or 12,
dadurch gekennzeichnet, characterized,
a) dass die Spülmittelzuführung (13; 26) in axialer Richtung zwischen dem Anker (9) und dem Spulenkern (7) in das Spulenrohr (5) mündet, um das Spülmittel zuzufüh¬ ren, oder a) that the flushing agent supply (13; 26) in the axial direction between the armature (9) and the coil core (7) opens into the coil tube (5) for the flushing agent zuzufüh ¬ reindeer, or
b) dass die Spülmittelzuführung (13; 26) in axialer Richtung im Bereich des Spulenkerns (7) in das Spulenrohr (5) mündet, insbesondere an dem dem Anker (9) abgewand- ten Ende des Spulenrohrs (5) . b) that the flushing agent supply (13; 26) opens in the axial direction in the region of the coil core (7) into the coil tube (5), in particular at the armature (9) facing away from th end of the coil tube (5).
14. Druckkopf nach einem der Ansprüche 6 bis 12, 14. Printhead according to one of claims 6 to 12,
dadurch gekennzeichnet, characterized,
a) dass das Steuerventil (23.1-23.4) einen verschiebbaren Anker (9) aufweist, der in Abhängigkeit von der Bestro- mung der Spule (6) verschoben wird und in Abhängigkeit von seiner Stellung die Düse (2) verschließt oder freigibt, und a) that the control valve (23.1-23.4) has a displaceable armature (9) which is displaced in response to the energization of the coil (6) and closes or releases the nozzle (2) in dependence on its position, and
b) dass der Anker (9) in einem spülmitteldurchlässigen b) that the anchor (9) in a detergent-permeable
Führungskäfig (14) angeordnet ist, insbesondere in ei¬ nem geschlitzten Zylinder. Guide cage (14) is arranged, in particular in egg ¬ nem slotted cylinder.
15. Druckkopf nach einem der Ansprüche 6 bis 12, 15. Printhead according to one of claims 6 to 12,
dadurch gekennzeichnet, characterized,
a) dass der verschiebbare Anker (9) eine mittige Führungs¬ bohrung (15) aufweist, und a) that the displaceable armature (9) has a central guide ¬ bore (15), and
b) dass in die Führungsbohrung (15) des beweglichen Ankers b) that in the guide bore (15) of the movable armature
(9) ein ortsfester Führungsstift (16) hineinragt, und c) dass die Führungsbohrung (15) in dem verschiebbaren Anker (9) spülbar ist.  (9) a stationary guide pin (16) protrudes, and c) that the guide bore (15) in the displaceable armature (9) is flushable.
16. Druckkopf nach einem der Ansprüche 6 bis 15, gekennzeichnet durch eine flexible Membran (17), die das Steuerventil (23.1-23.4) von der Beschichtungsmittelzuführung (4; 24) trennt, so dass das Steuerventil (23.1-23.4) durch die Memb¬ ran (17) vor einem Kontakt mit dem Beschichtungsmittel ge¬ schützt wird. 16. Printhead according to one of claims 6 to 15, characterized by a flexible membrane (17) which separates the control valve (23.1-23.4) from the coating agent supply (4; 24), so that the control valve (23.1-23.4) through the Memb ¬ ran (17) ge ¬ protects from contact with the coating agent.
17. Druckkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, 17. Printhead according to one of the preceding claims, characterized
a) dass der Druckkopf einen Farbwechsel innerhalb einera) that the print head a color change within a
Farbwechseldauer von weniger als lh, 20min, 10min, 30s, 10s, oder 5s ermöglicht, und/oder b) dass der Farbwechsel nicht länger dauert als das Ein¬ bzw. Ausfördern des Beschichtungsobj ekts aus der La¬ ckierzone, und/oder Color change time of less than lh, 20min, 10min, 30s, 10s, or 5s allows, and / or b) that the color change does not take longer than a ¬ or conveying out of the Beschichtungsobj ect from the La ¬ ckierzone, and / or
c) dass der Farbwechsel in der zeitlichen Lücke stattfindet, die durch den Abstand zwischen zwei Beschichtungs- objekten (Karossen) gegeben ist, und/oder c) that the color change takes place in the temporal gap, which is given by the distance between two coating objects (bodies), and / or
d) dass der Druckkopf bei einem Farbwechsel geringe Farb¬ wechselverluste aufweist, die kleiner sind als 51, 21, 200ml, 20ml, 10ml, 5ml oder 2ml, und/oder d) that the print head in a color change low color ¬ exchange losses, which are smaller than 51, 21, 200ml, 20ml, 10ml, 5ml or 2ml, and / or
e) dass der Druckkopf bei einem Farbwechsel einen geringen Spülmittelverbrauch hat, der kleiner ist als 101, 51, 21, 200ml, 100ml, 50ml, 20ml, 10ml, und/oder e) that the print head has a low detergent consumption in a color change, which is smaller than 101, 51, 21, 200ml, 100ml, 50ml, 20ml, 10ml, and / or
f) dass der Druckkopf mehrere getrennte Spülmittelzufüh¬ rungen (13; 26) aufweist, um verschiedene Spülmittel zuzuführen, und/oder f) that the print head plurality of separate Spülmittelzufüh ¬ extensions (13; comprising 26) to supply different detergents, and / or
g) dass der Druckkopf im Wesentlichen totraumfrei und/oder hinterschneidungsfrei ist, und/oder g) that the print head is substantially free of dead space and / or undercuts, and / or
h) dass der Druckkopf an seinen Oberflächen, die mit dem Beschichtungsmittel in Kontakt kommen, mit einer reini- gungsfordernden Beschichtung versehen ist, und/oder i) dass der Druckkopf druckfest bis zu einem Druck von h) that the print head is provided with a cleaning-demanding coating on its surfaces which come into contact with the coating agent, and / or i) that the print head is pressure-resistant up to a pressure of
mindestens lbar, 5bar, 6bar, 8bat, lObar, 15bar oder 2 Obar .  at least lbar, 5bar, 6bar, 8bat, 10bar, 15bar or 2 obar.
18. Beschichtungsemrichtung zur Beschichtung von Bauteilen, insbesondere zur Lackierung von Kraftfahrzeugkarosserie bauteilen mit einem Lack, gekennzeichnet durch einen Druckkopf nach einem der vorhergehenden Ansprüche zur Applikation des Beschichtungsmittels auf das Bauteil. 18. coating device for coating components, in particular for painting vehicle body components with a paint, characterized by a print head according to one of the preceding claims for application of the coating agent to the component.
19. Beschichtungseinrichtung nach Anspruch 18, gekennzeich net durch einen Farbwechsler, der stromaufwärts vor dem 19. Coating device according to claim 18, gekennzeich net by a color changer, the upstream of the
Druckkopf angeordnet und ausgangsseitig mit dem Druckkopf verbunden ist, um den Druckkopf wahlweise mit verschiedenfar bigen Beschichtungsmitteln zu speisen, insbesondere in einer Bauweise als Printhead arranged and the output side connected to the print head to the printhead optionally with different colors igen coating agents, especially in a construction as
a) Linearfarbwechsler, a) linear color changer,
b) Rotationsfarbwechsler, b) rotation color changer,
c) integriertem Farbwechsler innerhalb des Druckkopfs, o- der c) integrated color changer within the printhead, o-
d) A/B-Farbwechsler . d) A / B color changer.
20. Betriebsverfahren für einen Druckkopf nach einem der Ansprüche 1 bis 19, gekennzeichnet durch folgenden Schritt:20. A method of operating a printhead according to any one of claims 1 to 19, characterized by the following step:
Spülen des Druckkopfs mit einem Spülmittel. Rinse the printhead with a rinse.
21. Betriebsverfahren nach Anspruch 20, 21. Operating method according to claim 20,
dadurch gekennzeichnet, characterized,
a) dass das Spülmittel ein Universalspülmittel ist, dass sowohl für wasserbasierten Lack als auch für Lösemittellack geeignet ist, und/oder a) that the rinsing agent is a universal rinse that is suitable both for water-based paint and for solvent-based, and / or
b) dass das Spülmittel ein VOC-freies Spülmittel ist, b) that the detergent is a VOC-free detergent,
und/oder  and or
c) dass dem Druckkopf zusammen mit dem Spülmittel oder ab¬ wechselnd Pulsluft zugeführt wird, und/oder c) that is supplied to the printing head together with the detergent or from ¬ alternately pulsed air, and / or
d) dass dem Druckkopf zum Spülen ein Aerosol zugeführt d) that an aerosol is supplied to the printhead for rinsing
wird, und/oder  will, and / or
e) dass dem Druckkopf nacheinander verschiedene Spülmittel zugeführt werden. e) that the printhead successively different rinsing agents are supplied.
22. Betriebsverfahren nach Anspruch 20 oder 21, gekennzeichnet durch folgende Schritte: 22. Operating method according to claim 20 or 21, characterized by the following steps:
a) Zuführen eines lösemittelbasierten Lacks und Applikati- on des lösemittelbasierten Lacks, a) supplying a solvent-based paint and application of the solvent-based paint,
b) Spülen des Druckkopfs mit einem lösemittelbasierten b) Rinse the printhead with a solvent based
Spülmittel ,  Detergent,
c) Optional Zuführen eines Trennmittels beim Wechsel von dem lösemittelbasierten Lack auf einen Wasserlack, d) Zuführen eines Wasserlacks und Applikation des Wasserlacks, und c) optionally supplying a release agent when changing from the solvent-based paint to a water-based paint, d) supplying a water-based paint and applying the water-based paint, and
e) Spülen des Druckkopfs mit einem wasserbasierten Spülmittel . e) Rinse the printhead with a water based rinse.
23. Betriebsverfahren nach einem der Ansprüche 20 bis 22, gekennzeichnet durch folgende Schritte: 23. Operating method according to one of claims 20 to 22, characterized by the following steps:
a) Andrücken des Druckkopfs nach einem Farbwechsel auf ein neues Beschichtungsmittel mit dem neuen Beschichtungs- mittel, und/oder a) pressing the printhead after a color change to a new coating agent with the new coating agent, and / or
b) Ausbringen einer definierten Lackmenge nach einem Farbwechsel durch die Düse des Druckkopfs. b) applying a defined amount of paint after a color change through the nozzle of the print head.
24. Betriebsverfahren nach einem der Ansprüche 20 bis 23, gekennzeichnet durch folgende Schritte: 24. Operating method according to one of claims 20 to 23, characterized by the following steps:
a) Auffangen aller bei einem Spülvorgang abgegebenen Fluide für eine Entsorgung einschließlich des ausgespülten alten Beschichtungsmittels und des verwendeten Spülmit¬ tels, und/oder a) collecting all discharged during a flushing fluids for disposal, including the flushed out old coating agent and the Spülmit ¬ used , and / or
b) Spülen der Außenfläche des Düsenkopfs bei einem Farb¬ wechsel . b) rinsing the outer surface of the nozzle head in a color ¬ change.
25. Betriebsverfahren nach einem der Ansprüche 20 bis 24, dadurch gekennzeichnet, das bei einem Spülvorgang folgende Schritte nacheinander oder abwechselnd durchgeführt werden: a) Spülen des Druckkopfs mit einem Spülmittel in die Rück¬ führung des Druckkopfs, und 25. Operating method according to one of claims 20 to 24, characterized in that the following steps are carried out successively or alternately during a rinsing process: a) rinsing the print head with a rinsing agent in the return ¬ management of the print head, and
b) Spülen des Druckkopfs mit einem Spülmittel durch die Düse des Druckkopfs, und b) rinsing the print head with a rinse through the nozzle of the print head, and
c) optional Spülen des Druckkopfs mit einem Gemisch aus Spülmittel und Pulsluft. c) optionally rinsing the print head with a mixture of detergent and pulse air.
26. Betriebsverfahren nach einem der Ansprüche 20 bis 25, dadurch gekennzeichnet, dass ein Farbwechsel folgende Schrit- te umfasst: 26. Operating method according to one of claims 20 to 25, characterized in that a color change following steps te includes:
a) Spülen des Druckkopfs mit einem Spülmittel, und a) rinsing the printhead with a detergent, and
b) Andrücken des Druckkopfs mit einem neuen Beschichtungs- mittel . b) Pressing the printhead with a new coating agent.
EP17811262.9A 2016-12-14 2017-12-01 Printing head and corresponding operational method Active EP3535064B1 (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111570162A (en) * 2020-05-06 2020-08-25 广汽新能源汽车有限公司 Coating color-changing production control method and device and coating color-changing production line
DE102020127852A1 (en) 2020-10-22 2022-04-28 Dürr Systems Ag Operating procedure for a coating plant and correspondingly adapted coating plant
JP6979546B1 (en) 2021-10-08 2021-12-15 アーベーベー・シュバイツ・アーゲーABB Schweiz AG Painting equipment
JP7241955B1 (en) * 2022-12-20 2023-03-17 アーベーベー・シュバイツ・アーゲー painting machine

Family Cites Families (226)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284250B (en) 1965-10-30 1968-11-28 Kaercher Fa Alfred Sprayer for spraying a liquid mixture
US3717306A (en) 1971-03-10 1973-02-20 Hushon R Nozzle for spraying foaming materials
US3981320A (en) * 1974-05-10 1976-09-21 The Gyromat Corporation Recovery system for spray painting installation with automatic color change
AT349415B (en) 1975-07-28 1979-04-10 Zimmer Peter Ag INJECTION PRESSURE DEVICE FOR SAMPLING OF A GOODS
CH613387A5 (en) * 1975-07-28 1979-09-28 Zimmer Peter Maschinenfabrik A Process and device for applying patterns to a material, in particular to a web material
US4383264A (en) 1980-06-18 1983-05-10 Exxon Research And Engineering Co. Demand drop forming device with interacting transducer and orifice combination
JPS5722070A (en) 1980-07-15 1982-02-04 Oki Electric Ind Co Ltd Cooling device for printer
US4375865A (en) 1980-08-12 1983-03-08 Binks Manufacturing Company Color change system for spray coating apparatus
DE3045401A1 (en) 1980-12-02 1982-07-01 Robert Bosch Gmbh, 7000 Stuttgart PROCESS FOR INJECTING INJECTORS
MX152277A (en) 1980-12-16 1985-06-19 Vitro Tec Fideicomiso IMPROVEMENTS IN SOLENOID PNEUMATIC VALVE BLOCKS FOR GLASS ARTICLE MANUFACTURING MACHINES
US4423999A (en) 1981-09-14 1984-01-03 General Motors Corporation Mechanical hand for a door-opener
US4435719A (en) 1982-03-30 1984-03-06 Snaper Alvin A Fluidic matrix printer
DE3221327A1 (en) 1982-06-05 1983-09-15 Daimler-Benz Ag, 7000 Stuttgart Plant for colour spraying of series-production parts of changing colour
DE3225554A1 (en) 1982-07-08 1984-01-12 Robert Bosch Gmbh, 7000 Stuttgart Measuring device for fluid jets
US4668948A (en) 1983-03-10 1987-05-26 Nordson Corporation Dispenser malfunction detector
US4555719A (en) 1983-08-19 1985-11-26 Videojet Systems International, Inc. Ink valve for marking systems
WO1986001775A1 (en) 1984-09-19 1986-03-27 Ronald Douglas Drysdale Method of and apparatus for applying images to a surface
JPS624464A (en) 1985-07-02 1987-01-10 Honda Motor Co Ltd Device for painting automobile body
JPS62116442A (en) 1985-11-12 1987-05-28 Toppan Printing Co Ltd Double feed sensing device
DD245400A1 (en) * 1986-02-05 1987-05-06 Robotron Bueromasch COLOR JET HEAD
US4875058A (en) 1986-12-12 1989-10-17 Markpoint System Ab Valve device for a matrix printer
US4734711A (en) 1986-12-22 1988-03-29 Eastman Kodak Company Pressure regulation system for multi-head ink jet printing apparatus
SE456597B (en) 1987-02-12 1988-10-17 Scandot System Ab DEVICE FOR A VALVE ARRANGEMENT FOR THE EXHAUST OF LIQUID BY A SCRIPLINE PRINTER
DE3721875A1 (en) 1987-07-02 1989-01-12 Gema Ransburg Ag METHOD AND DEVICE FOR A POWDER SPRAY COATING SYSTEM
JPH0798171B2 (en) 1988-04-19 1995-10-25 トキコ株式会社 Industrial robot equipment
US4974780A (en) 1988-06-22 1990-12-04 Toa Nenryo Kogyo K.K. Ultrasonic fuel injection nozzle
US5050533A (en) 1988-07-25 1991-09-24 Technadyne Engineering Corporation Application of thermal-cure materials
US5602575A (en) 1988-11-05 1997-02-11 Rea Elektronik Gmbh Ink jet writing head
US4894252A (en) 1988-11-30 1990-01-16 Ransburg Corporation Coating material orifice clogging indication method and apparatus
US4985715A (en) * 1990-03-22 1991-01-15 Telesis Controls Corporation Marker assembly for spray marking dot matrix characters and method of fabrication thereof
JP3144566B2 (en) 1990-05-08 2001-03-12 マツダ株式会社 Painting method and painting equipment
US5072881A (en) 1990-06-04 1991-12-17 Systems Specialties Method of cleaning automated paint spraying equipment
JPH04106669U (en) 1991-02-21 1992-09-14 セントラル自動車株式会社 Water-based painting booth
DE4138491C2 (en) 1991-11-23 1995-07-20 Juergen Dipl Ing Joswig Micromechanical valve for micromechanical dosing devices
US5429682A (en) 1993-08-19 1995-07-04 Advanced Robotics Technologies Automated three-dimensional precision coatings application apparatus
DE4329384C2 (en) 1993-09-01 2001-08-09 Duerr Systems Gmbh Conveyor
DE9422327U1 (en) 1993-09-01 2000-03-23 Duerr Systems Gmbh Coating system
US5435884A (en) 1993-09-30 1995-07-25 Parker-Hannifin Corporation Spray nozzle and method of manufacturing same
GB2286157B (en) 1994-01-31 1998-01-14 Neopost Ltd Ink jet printing device
DE9405600U1 (en) 1994-04-02 1994-06-16 Itw Dynatec Klebetechnik Holdi Application head for the metered delivery of flowing media
CN2287527Y (en) 1994-04-20 1998-08-12 徐连宽 Fuel burning type paint spray and baking vanish booth
US5718767A (en) 1994-10-05 1998-02-17 Nordson Corporation Distributed control system for powder coating system
US5659347A (en) 1994-11-14 1997-08-19 Xerox Corporation Ink supply apparatus
US5647542A (en) 1995-01-24 1997-07-15 Binks Manufacturing Company System for electrostatic application of conductive coating liquid
US5636795A (en) 1995-05-11 1997-06-10 First Pioneer Industries Inc. Cyclonic spray nozzle
SE504472C2 (en) 1995-06-22 1997-02-17 Abb Flexible Automation As Color feeding system for spray painting robot
JPH09192583A (en) 1996-01-17 1997-07-29 Fuji Heavy Ind Ltd Box for keeping roller type coating device
DE19606716C1 (en) 1996-02-23 1997-08-14 Herberts Gmbh Process for multi-layer painting
SE507821C2 (en) 1996-04-15 1998-07-20 Jetline Ab Valve construction with ink jet printers
DE19630290C2 (en) 1996-07-26 2000-08-10 Audi Ag System for the surface treatment of objects, in particular vehicle bodies
JP2978459B2 (en) 1996-09-30 1999-11-15 キヤノン株式会社 Method and apparatus for manufacturing color filter, color filter, display apparatus, and apparatus having display apparatus
DE19731829A1 (en) 1997-07-24 1999-01-28 Tietz Patrick Colour mixing and dosing unit for enamels, paints etc.using paint delivery unit atomising paint
DE19743804A1 (en) 1997-10-02 1999-04-08 Politrust Ag Large format printing using ink-jet printer
ES2273444T3 (en) 1998-01-13 2007-05-01 Abb K.K. COATING METHOD FOR A ROTATING ATOMIZING HEAD TYPE COATING DEVICE.
ID28206A (en) 1998-08-13 2001-05-10 Ppg Ind Ohio Inc COMPOSITION, EQUIPMENT, AND METHOD FORMING LAYERS WITH SELECTED COLORS IN THE SUBSTRATE AND ITEMS PRODUCED
DE19852079A1 (en) 1998-11-11 2000-05-18 Thomas Kovarovsky Image generating painting arrangement has controller with device that reacts to image information by actuating robot arm, dosing device to reproduce image on painted surface
JP2000158670A (en) 1998-11-26 2000-06-13 Fuji Electric Co Ltd Ink-jet recording apparatus
JP4358352B2 (en) 1999-05-11 2009-11-04 トリニティ工業株式会社 Coating device, coating machine used therefor, and coating method using the same
DE19936790A1 (en) 1999-08-10 2001-02-15 Nordson Corp Westlake Method and device for producing a removable protective layer for surfaces, in particular for painted surfaces of motor vehicle bodies
JP2001157863A (en) 1999-09-21 2001-06-12 Tokyo Electron Ltd Coater
JP2001129456A (en) 1999-11-04 2001-05-15 Sekisui Chem Co Ltd Cleaning method of nozzle in spray coating device and spray coating device
IT1311388B1 (en) 1999-11-10 2002-03-12 Gd Spa SPRAY RUBBER UNIT.
US6325302B1 (en) 1999-11-29 2001-12-04 Fanuc Robotics North America, Inc. Airless spray tool
DE10050875B4 (en) 1999-12-20 2006-11-02 Tevkür, Talip Plant for paint spraying
KR100335955B1 (en) 1999-12-30 2002-05-10 이계안 Coating system for protecting film
DE20122653U1 (en) 2000-01-21 2007-02-22 Seiko Epson Corp. Ink cartridge and ink jet recording device using the same
US6360656B2 (en) 2000-02-28 2002-03-26 Minolta Co., Ltd. Apparatus for and method of printing on three-dimensional object
JP2001239652A (en) 2000-02-28 2001-09-04 Minolta Co Ltd Printer and printing method
US6460958B2 (en) 2000-02-29 2002-10-08 Minolta Co., Ltd. Three-dimensional object printing apparatus and method
US6401976B1 (en) 2000-03-23 2002-06-11 Nordson Corporation Electrically operated viscous fluid dispensing apparatus and method
DE10031030B4 (en) 2000-06-26 2005-08-04 Bauer, Jörg R. Method and device for producing flat components with a predetermined surface appearance and planar component, in particular front panel of a kitchen element
FR2811917B1 (en) 2000-07-24 2002-12-20 Sames Sa PRODUCT CHANGE METHOD AND STATION IN A COATING PRODUCT SPRAYING SYSTEM
US6641667B2 (en) 2000-08-29 2003-11-04 Honda Giken Kogyo Kabushiki Kaisha Robot-mounted two-package-mixing coating device and internal pressure explosion-proof robot
US6523921B2 (en) 2000-08-30 2003-02-25 L&P Property Management Method and apparatus for printing on rigid panels and other contoured or textured surfaces
DE10048749A1 (en) 2000-09-29 2002-04-11 Josef Schucker Arrangement for applying adhesive to a workpiece
US6849684B2 (en) 2000-10-20 2005-02-01 E. I. Du Pont De Nemours And Company Molded soft elastomer/hard polyester composition with noise damping properties
JP3953776B2 (en) 2001-01-15 2007-08-08 セイコーエプソン株式会社 Material discharging apparatus and method, color filter manufacturing apparatus and manufacturing method, liquid crystal device manufacturing apparatus and manufacturing method, EL apparatus manufacturing apparatus and manufacturing method
US20050016451A1 (en) 2001-06-01 2005-01-27 Edwards Charles O. Interchangeable microdesition head apparatus and method
WO2002098576A1 (en) 2001-06-01 2002-12-12 Litrex Corporation Industrial microdeposition system for polymer light emitting diode displays, printed circuit boards and the like
US7160105B2 (en) 2001-06-01 2007-01-09 Litrex Corporation Temperature controlled vacuum chuck
US7449070B2 (en) 2001-06-01 2008-11-11 Ulvac, Inc. Waveform generator for microdeposition control system
US20040231594A1 (en) 2001-06-01 2004-11-25 Edwards Charles O. Microdeposition apparatus
US7244310B2 (en) 2001-06-01 2007-07-17 Litrex Corporation Over-clocking in a microdeposition control system to improve resolution
JP4158357B2 (en) 2001-06-05 2008-10-01 セイコーエプソン株式会社 Inkjet recording device
US6755512B2 (en) 2001-07-30 2004-06-29 Fuji Photo Film Co. Ltd Liquid droplet ejection apparatus and inkjet recording head
JP3487301B2 (en) 2001-08-06 2004-01-19 マツダ株式会社 Painting method and painting equipment for automobile body
DE10140216B4 (en) 2001-08-17 2006-02-09 ITW Oberflächentechnik GmbH & Co. KG Method and device on a painting device for cleaning a paint delivery line
US6757586B2 (en) 2001-09-05 2004-06-29 Abb Automation Inc. Multiple arm robot arrangement
JP3961820B2 (en) 2001-11-30 2007-08-22 株式会社不二越 Industrial robot controller
JP4060275B2 (en) 2002-01-22 2008-03-12 ノードソン コーポレーション Method and apparatus for detecting a liquid ejection pattern
DE10307719A1 (en) 2002-03-01 2003-09-11 Vmt Bildverarbeitungssysteme G Quality assurance for application of medium to object involves allowing coating of target object depending on comparison of result of coating test object with stored desired properties
DE10224128A1 (en) 2002-05-29 2003-12-18 Schmid Rhyner Ag Adliswil Method of applying coatings to surfaces
US20040173144A1 (en) 2002-05-31 2004-09-09 Edwards Charles O. Formation of printed circuit board structures using piezo microdeposition
DE60311519T2 (en) 2002-10-23 2007-11-29 Fanuc Robotics America, Inc., Rochester Hills MODULAR COATING DEVICE
JP4123897B2 (en) 2002-10-28 2008-07-23 株式会社エルエーシー Inkjet nozzle
WO2004041444A1 (en) 2002-11-06 2004-05-21 Advanced Flow Control Afc Ab System for spraying a fluid material
SE0203515L (en) 2002-11-27 2004-05-28 Texdot Ab Valve unit in a liquid jet printer and method at such a unit
US7454785B2 (en) 2002-12-19 2008-11-18 Avocent Huntsville Corporation Proxy method and system for secure wireless administration of managed entities
JP3885036B2 (en) 2003-03-14 2007-02-21 本田技研工業株式会社 Method and apparatus for applying protective layer forming material
GB0306788D0 (en) 2003-03-25 2003-04-30 Willett Int Ltd Method
US7178742B2 (en) 2003-05-06 2007-02-20 Lear Corporation Fluid delivery system for spray applicator
US20050001869A1 (en) 2003-05-23 2005-01-06 Nordson Corporation Viscous material noncontact jetting system
DE10331206A1 (en) 2003-07-10 2005-01-27 Daimlerchrysler Ag Spray material is applied to a workpiece by directing a spray jet of an applicator, monitoring the jet geometry, and comparing it with a predetermined geometry
US20050015050A1 (en) 2003-07-15 2005-01-20 Kimberly-Clark Worldwide, Inc. Apparatus for depositing fluid material onto a substrate
ZA200407781B (en) 2003-10-03 2005-09-28 Int Tech Llc Blasting and blastiing accessory
FR2862563B1 (en) 2003-11-24 2007-01-19 Centre Nat Rech Scient A LARGE-SIZE DIGITAL DIGITAL PRINTING ROBOT ON A FIXED SURFACE AND A PRINTING METHOD USING AT LEAST ONE SUCH ROBOT
KR100848162B1 (en) 2004-01-19 2008-07-23 삼성전자주식회사 A ink-jet printing apparatus and head position adjustment method thereof
WO2005075170A1 (en) 2004-02-03 2005-08-18 Linde Aktiengesellschaft Surface coating device
JP4419015B2 (en) 2004-03-04 2010-02-24 リコープリンティングシステムズ株式会社 Inkjet coating method and apparatus
DE102004034270B4 (en) 2004-07-15 2016-08-18 Wolfgang Schmidt Plant for discharging flowable fluids, in particular paints and varnishes and method for operating the system
WO2006022217A1 (en) 2004-08-23 2006-03-02 Kabushiki Kaisha Ishiihyoki Ink jet printer discharge amount control method, ink droplet spread check method, and orientation film formation method
DE102004044655B4 (en) 2004-09-15 2009-06-10 Airbus Deutschland Gmbh Painting device, painting arrangement, method for painting a curved surface of an aircraft and use of an inkjet device for painting an aircraft
US20060068109A1 (en) 2004-09-15 2006-03-30 Airbus Deutschland Gmbh Painting device, painting arrangement, method for painting a curved surface of an object, and use of an inkjet device for painting an aircraft
US7824001B2 (en) 2004-09-21 2010-11-02 Z Corporation Apparatus and methods for servicing 3D printers
DE102004049471A1 (en) 2004-10-11 2006-04-20 Bayerische Motoren Werke Ag Device for applying preserving coating to vehicle comprises nozzle strip with controllable spray nozzles arranged to also only spray in partial areas
JP2007021760A (en) 2005-07-12 2007-02-01 Nissha Printing Co Ltd Forming apparatus of thin film
DK1764226T3 (en) 2005-09-20 2009-10-12 Agfa Graphics Nv Method and arrangement for aligning arrays of print elements automatically
CN101309755A (en) 2005-12-01 2008-11-19 3M创新有限公司 Multi-component liquid spray systems
JP2007152666A (en) 2005-12-02 2007-06-21 Seiko Epson Corp Liquid droplet observing device
JP4432922B2 (en) 2006-03-17 2010-03-17 セイコーエプソン株式会社 Droplet discharge device
DE102006017956B4 (en) 2006-04-18 2016-01-07 OuISS Qualitäts-Inspektionssysteme und Service AG Method for applying and monitoring a job structure with repair function and device therefor
JP4705877B2 (en) 2006-04-25 2011-06-22 トリニティ工業株式会社 Top coating equipment and coating method using the same
DE102006021623A1 (en) 2006-05-09 2007-11-15 Dürr Systems GmbH Dosing system for a coating system
US8794174B2 (en) 2006-05-12 2014-08-05 Durr Systems Gmbh Coating installation and associated operating method
EP1884365A1 (en) 2006-07-28 2008-02-06 Abb Research Ltd. Paint applicator and coating method
KR100729553B1 (en) 2006-10-27 2007-06-18 주식회사 탑 엔지니어링 Dispensing apparatus
KR100833679B1 (en) 2006-11-07 2008-05-29 포항공과대학교 산학협력단 Droplet Mixing Apparatus and Droplet Mixing Method
DE102006056051B4 (en) 2006-11-28 2018-09-20 Robert Bosch Gmbh Robot with control for additional axes
US8707976B2 (en) 2006-11-29 2014-04-29 Daryl Bauer Portable painting apparatus
DE102007002980A1 (en) 2007-01-19 2008-07-24 Voith Patent Gmbh Adhesive applicator for a paper or cardboard processing machine
CA2680034C (en) 2007-03-08 2018-01-02 Kabushiki Kaisha Yaskawa Denki Painting system
DE102007018877B4 (en) 2007-04-19 2010-03-04 Hönig, Thomas Method and material application device with a test device for the quality measurement of the application image of a spray nozzle and use of a test field
EP2151282B1 (en) 2007-05-18 2021-04-21 Musashi Engineering, Inc. Method and apparatus for discharging liquid material
EP2002898A1 (en) 2007-06-14 2008-12-17 J. Zimmer Maschinenbau Gesellschaft m.b.H. Application device for applying a fluid onto a substrate with valve devices, method for cleaning the application device and valve device for application device
GB0712860D0 (en) 2007-07-03 2007-08-08 Eastman Kodak Co continuous inkjet drop generation device
DE102007037663A1 (en) 2007-08-09 2009-02-19 Dürr Systems GmbH Needle valve assembly
EP2207951B1 (en) 2007-09-25 2014-03-12 Airbus SAS Method for operating a gas turbine engine and aircraft using such method
CN103909743B (en) 2007-12-31 2017-01-11 埃克阿泰克有限责任公司 Apparatus and method for printing three dimensional articles
US20090181182A1 (en) 2008-01-10 2009-07-16 Sloan Donald D Multipurpose digital ink
DE102008018881B4 (en) 2008-03-11 2020-10-01 Atlas Copco Ias Gmbh Method and device for applying a viscous material to a workpiece and use of a needle valve for a device for applying a viscous material to a workpiece
EP2268415B1 (en) 2008-03-20 2015-05-06 Dürr Systems GmbH Painting robot and associated operating method
DE102008045553A1 (en) 2008-09-03 2010-03-04 Dürr Systems GmbH Painting device and associated method
DE102008053178A1 (en) 2008-10-24 2010-05-12 Dürr Systems GmbH Coating device and associated coating method
DE102008061203A1 (en) 2008-12-09 2010-06-10 Rehau Ag + Co Method for painting a three-dimensional surface of a component
JP2010241003A (en) 2009-04-07 2010-10-28 Seiko Epson Corp Liquid droplet delivering head
DE102009020064A1 (en) 2009-05-06 2010-11-11 Dürr Systems GmbH Fluid valve, in particular recirculation valve for a paint shop
US8556373B2 (en) 2009-06-19 2013-10-15 Burkhard Buestgens Multichannel-printhead or dosing head
DE102009029946A1 (en) 2009-06-19 2010-12-30 Epainters GbR (vertretungsberechtigte Gesellschafter Burkhard Büstgens, 79194 Gundelfingen und Suheel Roland Georges, 79102 Freiburg) Print head or dosing head
DE102009038462A1 (en) 2009-08-21 2011-03-03 Dürr Systems GmbH Tumbling piston pump for metering a coating agent
US8652581B2 (en) 2009-10-09 2014-02-18 Matthew Merchant Method of using a spray gun and material produced thereby
DE102009052654A1 (en) 2009-11-11 2011-05-12 Dürr Systems GmbH Device and method for the preservation of components
US8757511B2 (en) 2010-01-11 2014-06-24 AdvanJet Viscous non-contact jetting method and apparatus
DE102010004496B4 (en) 2010-01-12 2020-06-18 Hermann Müller Method for operating a device for coating and / or printing a workpiece
JP2011206958A (en) 2010-03-29 2011-10-20 Seiko Epson Corp Liquid injection device, liquid injection head and method of detecting coming-out of nozzle
US8534574B2 (en) 2010-04-08 2013-09-17 Intel Corporation Underfill material dispenser
DE202010005211U1 (en) 2010-04-15 2011-10-21 Planatol System Gmbh Application system for liquid media
JP5769384B2 (en) 2010-04-20 2015-08-26 キヤノン株式会社 Ink cartridge and ink jet recording apparatus
DE102010019612A1 (en) 2010-05-06 2011-11-10 Dürr Systems GmbH Coating device, in particular with an application device, and associated coating method that emits a droplets of coating agent droplet
JP5489887B2 (en) 2010-06-30 2014-05-14 富士フイルム株式会社 Liquid coating apparatus, liquid coating method, and nanoimprint system
EP2433716A1 (en) 2010-09-22 2012-03-28 Hexagon Technology Center GmbH Surface spraying device with a nozzle control mechanism and a corresponding method
EP2799150B1 (en) 2013-05-02 2016-04-27 Hexagon Technology Center GmbH Graphical application system
EP2632730B1 (en) * 2010-10-27 2019-08-07 Matthews International Corporation Valve jet printer with inert plunger tip
JP5215376B2 (en) 2010-12-27 2013-06-19 富士ゼロックス株式会社 Liquid circulation device, liquid circulation control program, liquid ejection device
CN102198434A (en) 2010-12-29 2011-09-28 东莞市冠辉五金有限公司 Automatic spraying process for precision hardware and spraying control method
DE102012005087A1 (en) 2011-03-28 2012-10-04 Heidelberger Druckmaschinen Aktiengesellschaft Device for printing surfaces with multiple, movable print heads
JP2012228643A (en) 2011-04-26 2012-11-22 Takubo Engineering Co Ltd Coating system for casing of mobile terminal and coating method for casing of mobile terminal using the same
JP5647940B2 (en) 2011-04-26 2015-01-07 タクボエンジニアリング株式会社 Mobile terminal casing coating apparatus and mobile terminal casing coating method using the same
JP2013158968A (en) 2012-02-02 2013-08-19 Seiko Epson Corp Printing apparatus, and method of suppressing rise of temperature of print head unit
JP5055512B1 (en) 2012-02-16 2012-10-24 繁 中島 Paint supply printing device
CN102582260A (en) 2012-02-17 2012-07-18 上海美杰彩喷材料有限公司 Water-base resin ink-jet printer
JP5906841B2 (en) 2012-03-14 2016-04-20 マツダ株式会社 Paint circulation device and paint circulation method
EP2641661B1 (en) 2012-03-20 2016-05-11 Hexagon Technology Center GmbH Graphical application system
DE102012005650A1 (en) 2012-03-22 2013-09-26 Burkhard Büstgens Coating of surfaces in the printing process
DE102012006370A1 (en) 2012-03-29 2013-10-02 Heidelberger Druckmaschinen Aktiengesellschaft System for printing on an object
DE102012006371A1 (en) 2012-03-29 2012-07-05 Heidelberger Druckmaschinen Aktiengesellschaft Method for printing image on body i.e. tank of e.g. passenger car, involves generating three or higher-dimension raster matrix data to control inkjet printhead, and printing image with inkjet printhead using raster data
DE102012212469B4 (en) 2012-07-17 2022-10-06 Peter Fornoff Method for printing on a surface and device for printing on a surface
JP2014019140A (en) 2012-07-23 2014-02-03 Ricoh Co Ltd Ejection state inspecting method, and droplet ejecting apparatus
DE102012017538A1 (en) 2012-09-05 2014-03-06 Heidelberger Druckmaschinen Ag Process for imaging and / or varnishing the surface of objects
DE102012109123A1 (en) 2012-09-27 2014-03-27 Vermes Microdispensing GmbH Dosing system, dosing process and manufacturing process
GB2507069A (en) 2012-10-17 2014-04-23 Siemens Plc Monitoring the quality of an electrostatic coating by measuring light reflected from a spray
KR101733904B1 (en) 2012-12-27 2017-05-08 카티바, 인크. Techniques for print ink volume control to deposit fluids within precise tolerances
JP5494846B2 (en) 2013-01-23 2014-05-21 セイコーエプソン株式会社 Inkjet head unit and printing apparatus
DE102013002412A1 (en) 2013-02-11 2014-08-14 Dürr Systems GmbH Application method and application system
DE202013101134U1 (en) 2013-03-15 2014-06-17 Vermes Microdispensing GmbH metering valve
ITMO20130069A1 (en) 2013-03-15 2014-09-16 Tecno Italia S R L HEAD FOR THE DIGITAL DECORATION OF CERAMIC MANUFACTURES
DE102013205171A1 (en) 2013-03-22 2014-09-25 Krautzberger Gmbh Spraying system, spraying device, quick-change adapter and changing device, coating system and method for coating
DE102013006219A1 (en) 2013-04-11 2014-10-16 Eisenmann Ag Changing device for coating media and coating system for coating objects
KR101467404B1 (en) 2013-05-02 2014-12-03 희성촉매 주식회사 A device for dosing a fixed catalyst amount
US9808820B2 (en) 2013-05-03 2017-11-07 Abb Schweiz Ag Automatic painting and maintaining wet-surface of artifacts
DE102014006991A1 (en) 2013-06-06 2014-12-11 Heidelberger Druckmaschinen Ag Apparatus for printing with an ink jet printhead on a curved surface of an obiect
JP5805147B2 (en) 2013-07-01 2015-11-04 本田技研工業株式会社 Painting method
DE102013011107A1 (en) 2013-07-03 2014-08-07 Eisenmann Ag Method for operating a surface treatment system and device for separating overspray
JP6198499B2 (en) 2013-07-04 2017-09-20 株式会社エルエーシー Printing device
US9901945B2 (en) 2013-07-19 2018-02-27 Graco Minnesota Inc. Spray system pump wash sequence
BR112016002149A2 (en) 2013-07-31 2017-08-01 Organovo Inc automated fabric manufacturing methods, systems and devices
ES2861950T3 (en) 2013-08-29 2021-10-06 In Te Sa S P A Print head for decorating ceramic substrates
FR3010918B1 (en) 2013-09-23 2019-07-26 Airbus Operations DEVICE FOR APPLYING PROJECTED COATINGS ON PARTS AND ASSOCIATED METHOD
JP2015096322A (en) 2013-10-07 2015-05-21 株式会社ミマキエンジニアリング Printing device, inkjet head, and printing method
DE102013223250A1 (en) 2013-11-14 2015-05-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Printhead, printing device and method for applying a printing medium to a substrate, in particular a photovoltaic solar cell
WO2015083722A1 (en) 2013-12-06 2015-06-11 武蔵エンジニアリング株式会社 Liquid material application device
CN104734940A (en) 2013-12-23 2015-06-24 华为技术有限公司 Message display method for instant messaging tool and user terminals
JP2015193129A (en) 2014-03-31 2015-11-05 セーレン株式会社 Inkjet recording device
DE102014007048A1 (en) 2014-05-14 2015-11-19 Eisenmann Ag Coating system for coating objects
DE102014007523A1 (en) 2014-05-23 2015-11-26 Burkhard Büstgens Methods and devices for coating surfaces with colors
ES2811824T3 (en) 2014-06-04 2021-03-15 System Ceramics S P A A device for inkjet printing of fluids, in particular glazes, on tiles
DE102014008183A1 (en) 2014-06-10 2015-12-17 Burkhard Büstgens Cleaning nozzles of dried coating materials
DE102014012395A1 (en) 2014-08-21 2016-02-25 Heidelberger Druckmaschinen Ag Method and apparatus for printing a curved surface of an object with an ink jet head
DE102014012705A1 (en) 2014-08-27 2016-03-17 Eisenmann Se Valve
DE102014013158A1 (en) 2014-09-11 2016-03-17 Burkhard Büstgens Free jet facility
DE102014017707A1 (en) 2014-12-01 2016-06-02 Dürr Systems GmbH Coating method and corresponding coating system
WO2016145000A1 (en) 2015-03-09 2016-09-15 Isp Investments Inc. Spray characterization by optical image analysis
FR3033506B1 (en) 2015-03-11 2020-02-21 Reydel Automotive B.V. METHOD AND INSTALLATION FOR COATING A BODY WITH THE FORMATION OF A STRUCTURED SURFACE
JP6712840B2 (en) 2015-03-19 2020-06-24 Ｄｉｃグラフィックス株式会社 Filling nozzle device
ITUB20151950A1 (en) 2015-07-08 2017-01-08 System Spa Actuator device, in particular for an ink jet print head, with electromagnetic isolation
ITUB20151903A1 (en) 2015-07-08 2017-01-08 System Spa Actuator device, in particular for an ink jet printing head, with cooling system
CN205042649U (en) 2015-10-15 2016-02-24 湖北燕加隆九方圆板材有限责任公司 A variety of colors paints guiding device
US10556249B2 (en) 2015-10-16 2020-02-11 The Boeing Company Robotic end effector and method for maskless painting
FR3048368A1 (en) 2016-03-04 2017-09-08 Exel Ind COATING PRODUCT APPLICATOR, MULTIAXIS ROBOT COMPRISING SUCH APPLICATOR AND METHOD FOR APPLYING COATING PRODUCT
DE102016206272A1 (en) 2016-04-14 2017-10-19 Robert Bosch Gmbh Bypass valve and expander unit with a bypass valve
EP3257590A1 (en) 2016-06-16 2017-12-20 Airbus Operations GmbH Maskless painting and printing
JP6776685B2 (en) 2016-07-21 2020-10-28 セイコーエプソン株式会社 Fluid discharge device
US10226944B2 (en) 2016-08-30 2019-03-12 The Boeing Company Adaptable surface treatment repair system
JP6844183B2 (en) 2016-10-04 2021-03-17 セイコーエプソン株式会社 Liquid injection device
DE102016123731B4 (en) 2016-12-07 2019-03-21 Pixelrunner GmbH Robot for printing images on floor surfaces
DE102016014953A1 (en) 2016-12-14 2018-06-14 Dürr Systems Ag Painting plant and corresponding painting process
DE102016014951A1 (en) 2016-12-14 2018-06-14 Dürr Systems Ag Coating device and associated operating method

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