EP1502656B1 - Méthode et système d'alimentation de peinture pour une installation de revêtement électrostatique et système de liaison pour cela - Google Patents

Méthode et système d'alimentation de peinture pour une installation de revêtement électrostatique et système de liaison pour cela Download PDF

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Publication number
EP1502656B1
EP1502656B1 EP04017646A EP04017646A EP1502656B1 EP 1502656 B1 EP1502656 B1 EP 1502656B1 EP 04017646 A EP04017646 A EP 04017646A EP 04017646 A EP04017646 A EP 04017646A EP 1502656 B1 EP1502656 B1 EP 1502656B1
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EP
European Patent Office
Prior art keywords
valve
paint
coupling
receptacle
paint supply
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.)
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Application number
EP04017646A
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German (de)
English (en)
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EP1502656A3 (fr
EP1502656A2 (fr
Inventor
Stefano Giuliano
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Duerr Systems AG
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Duerr Systems AG
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Publication date
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Priority to SI200431549T priority Critical patent/SI1502656T1/sl
Priority to PL04017646T priority patent/PL1502656T3/pl
Publication of EP1502656A2 publication Critical patent/EP1502656A2/fr
Publication of EP1502656A3 publication Critical patent/EP1502656A3/fr
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Publication of EP1502656B1 publication Critical patent/EP1502656B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0458—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber the gas and liquid flows being perpendicular just upstream the mixing chamber
    • 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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device

Definitions

  • the invention relates to a method for ink supply of an electrostatic coating device with coating material of alternating color according to the preamble of claim 1 and in particular according to EP 1 369 183 A2 ( DE 102 23 498 ). Furthermore, the invention relates to a suitable electrical isolation unit and a coupling device for this purpose.
  • the paint reservoirs are hereby docked in A / B operation on the one hand to the atomizer leading piggable connecting lines and on the other hand to the output channels of conventional color change valve assemblies (color changer) of the supply system.
  • This mechanical electrical isolation has the advantage of maximum safety because of the reliable adjustment of the required insulation distances by air gaps. Compared to the potential isolation by means of damaged line sections ( EP 1 270 083 . EP 1 314 483 ) It also has the advantage that the coating material does not have to be reprinted during a color change or refilling process.
  • a color change system for a coating system of the type considered here is known, which instead of the hitherto common color change valve blocks (see, eg EP 0 979 964 and DE 198 46 073 ) consists of an arrangement of ink supply valves to which a connected to the atomizer valve is directly coupled.
  • the ink supply valves and the atomizer-side valve are displaceable relative to each other linearly or in a circular motion.
  • the media couplings formed by the valves can be shut off on one or both sides and can be piggable, especially when designed as a ball valve.
  • the invention has for its object to provide a method or a potential separation unit and a coupling device for this, with little effort and especially within the coating machine space-saving supply line arrangement enable a secure electrical isolation between the coating device and its grounded ink supply device. This should be achieved with minimal ink and detergent losses, especially during a color change.
  • the invention is based on the finding that in meaningful combination of in the EP 1 369 183 proposed paint supply system with the from EP 1 245 295 known color change system to take advantage of their respective advantages and achieve significant additional benefits.
  • the present invention solves the potential separation problem in a simple manner without losses of coating material and detergent caused by the potential separation.
  • the system described here is characterized not only by low investment costs, but also by good maintenance properties. It is particularly advantageous that maintenance and repair of components hardly lead to interruptions of the coating operation when a large part of the application components not in the spray booth but easily accessible in an easily exchangeable isolation module outside the cab.
  • a potential isolation module can be accommodated expediently in a housing which is highly voltage-insulated, preferably readily accessible outside the painting booth and possibly ventilated in a manner known per se in an explosion-proof manner.
  • the module contains at least one, but preferably as an A / B system, two paint reservoirs connected to associated metering systems.
  • piston dispensers installed outside the booth may be provided, or the paint reservoirs themselves may be designed as piston dispensers, but in many cases conventional gear or other metering pumps are preferred, which, especially when installed close to or in the atomizer, have the advantage of high metering accuracy and short dispensing response times to have.
  • the module contains at least one paint supply system serving as a media coupling, which may be grounded.
  • these color supply valves can be arranged in one or two-dimensional groups, for coupling the ink reservoir these and / or the valve groups parallel to the plane of the valve assembly and slidably on reaching the Ankuppelposition for docking to each other can be moved.
  • the potential separation module may include means for potential separation for a diluting or flushing medium as well as for an associated return line, for example with their own valves can be coupled to associated valves or only with movable coupling parts.
  • the potential isolation module may further include a high voltage generator and / or other components that may be needed, such as optoelectronic transducers for speed measurement, interrogation of the main needle position in the atomizer, and other sensors.
  • a full color change system includes, in addition to the potential isolation module described above, at least one or preferably two high voltage isolated battered hoses for the coating material, and preferably one high voltage isolated dilution and recycle tubing for A / B operation. These four hoses make the connection from the potential separation module to the atomizer as a hose package.
  • the pig target stations are preferably located close to or in the atomizer.
  • a Zerstäuber hiervoriques for in a conventional manner changeable atomizer are.
  • the according to another aspect of the invention not only, but in particular suitable for the described electrical isolation system coupling device has the particular advantage that it is possible with their pig body scrap paint residues in the clutch leak-free and completely without residues of the coupling channels.
  • This in Fig. 1 shown color supply system includes a potential separation unit 1, to which a piggable conduit assembly 2 is connected to the ink supply of an atomizer 3, which can be mounted as a coating device, for example, on the wrist of a painting robot (not shown).
  • the potential separation unit 1 consists essentially of a paint supply unit 10, a container unit 12 and a color removal unit 14.
  • the paint supply unit 10 has two groups of color supply valves 10A and 10B.
  • the individual ink supply valves can be connected, for example, to a respective ring line for one of the selectable colors of the coating material, wherein the valve units 10A and 10B can be supplied with the same colors.
  • the tank unit 12 includes two paint tanks 12A and 12B each provided with a port valve 13 for docking the tank 12A to each of the corresponding ink supply valves 10A and the tank 12B to each of the paint supply valves 10B.
  • the containers 12A and 12B can dock with their connection valve 13 to a respective color removal valve 14 provided in the ink extraction valve 14A and 14B, which are connected within the unit 14 each with a pig station 15A and 15B.
  • a respective color removal valve 14 provided in the ink extraction valve 14A and 14B, which are connected within the unit 14 each with a pig station 15A and 15B.
  • From each of these pig stations leads one of the two pipe line 2 forming pig pipes 2A and 2B of the Potential separation unit 1, which may be arranged as a module outside a paint booth, into the cabin and, for example, by the robot arm to each one preferably located in the atomizer 3 pig target station 30A and 30B.
  • containers 12A and 12B may be reciprocated between valves 10A or 10B and 14A or 14B between stationary units 10 and 14, but embodiments are contemplated wherein the paint supply unit 10 may instead be docked and / or docked. or the color removal unit 14 and / or their clutch valves are moved. If the high voltage of the atomizer 3 is switched off when docking the container to the ink supply valves, a permanent connection between the containers 12A, 12B and the pig stations 15A, 15B is conceivable. For coupling the ink containers to the paint supply valves of the unit 10 and possibly other valves, only a relative movement between the containers and the valves is necessary per se.
  • valves 10A and 10B may each be arranged in a straight row or even in a matrix of several parallel straight rows or instead on one or more arcs and from the containers 12A and 12B, respectively, with corresponding one or two dimensional linear movements and / or be approached on circular paths.
  • the containers are initially moved parallel to the plane of the valve arrangement by drive devices (not shown) controlled automatically by a stored program of the coating installation. After reaching the respective desired color valve, the containers are then coupled to this by the movement perpendicular to the plane of the valve assembly and disconnected again after filling. Suitable servo drives are available for the movements of the containers and the couplings.
  • the containers may be coupled to and disconnected from the paint extraction valves 14A and 14B.
  • the entire ink supply unit 10 may be firmly earthed, whereby the ink containers are placed when connecting to ground potential. Since the containers 12A and 12B are separated from the paint extraction valves 14A and 14B by sufficiently large air gaps when coupled to the valves 10A and 10B, respectively, the required electrical isolation of the unit 10 from the high voltage potential connected to the valves 14A, 14B Atomizer 3 taken care of. When the containers 12A and 12B are again disconnected and removed from the valves 10A and 10B after filling and then coupled to the paint extraction valves 14A and 14B, respectively, to supply the atomizer 3 and consequently to the high voltage potential of the atomizer, the necessary electrical isolation occurs Air gap between the containers 12A, 12B and the ink supply unit 10.
  • a / B operation allows a continuous supply of the atomizer.
  • a / B / C operation could also be realized by a third system of ink supply valves, container and ink extraction valve.
  • the potential separation unit 1 can also (not shown) means for potential separation for a flushing medium (usually thinner of the coating material) as well as for recycling to dispose of the flushing medium.
  • a flushing medium usually thinner of the coating material
  • two further containers may be provided for this purpose, which, like the ink containers 12A and 12B, may be coupled on the one hand to corresponding valves of the paint supply unit 10 and on the other hand to the ink extraction unit 14. If the high voltage is switched off in the rinsing and recycling processes, which is possible in the series coating of workpieces such as vehicle bodies, in particular in the interval between two consecutive workpieces ("body gap"), in this case can also be dispensed with the electrical isolation.
  • the ink containers 12A and 12B may be, for example, as shown in FIG Fig. 2 is represented by a flushable cylinder 210 may be formed with a piston 211.
  • the piston 211 may be driven by a motor (not shown) for filling and emptying the container or, instead, may be moved by a pressure medium such as compressed air or possibly by a relaxing compression spring when filled by the pressure of the supplied medium and emptying.
  • the cylinder 210 is connected for filling and draining via a line 212 with an attached valve assembly 213 having a paint port F for coupling the container to one of the valves 10A, 10B, 14A or 14B, a connection V / PL for thinner and pulse air and a further connection RF for the feedback contains. These connections can consist of valves.
  • valves such as 10A and 14A in Fig. 1 illustrated, to which it can be coupled with its color port F.
  • the container With the connections V / PL and RF, the container can be docked to corresponding (not shown) coupling valves associated lines in the potential separation unit 1.
  • the ink containers 12A and 12B in a conventional manner ( DE 103 20 147 ) to operate as a metering cylinder for metering the atomizer 3 supplied coating material.
  • a conventional or other metering pump directly on or preferably in the atomizer 3 for metering the coating material.
  • ink containers 10A and 10B there are further possibilities for the realization of the ink containers 10A and 10B, such as the use of a molded hose spiral with a tube volume corresponding to the desired filling quantity.
  • Fig. 3 and 4 2 schematically shows two different embodiments of media couplings, not only, but in particular for the realization of the ink supply valves 10A and 10B, the connection valves 13 and the paint extraction valves 14A and 14B of the ink supply system Fig. 1 can be used and both have the advantage that they are virtually dead space and allow easy disconnection of the coupling parts, for example, without leakage of the possibly in operation passed under pressure paint or other medium. If no color change takes place, but, for example, the container 12A or 12B is only refilled with the same color, these couplings do not have to be purged, or at least not at every coupling operation, so that the otherwise occurring time and flushing losses are avoided.
  • the coupling device shown essentially consists of two separable and mergeable coupling parts 41 and 42.
  • the one coupling part 42 includes a first channel 43, which may be connected via a connecting channel 46, for example, to a ring line for the color in question when the coupling part 42 for the realization of one of the paint supply valves 10A, 10B in Fig. 1 serves.
  • the other coupling part 41 may be located in the considered case on the container 12A and includes a second channel 44 which is connected to a leading to the container 12A (and thus indirectly to the atomizer 3) leading channel 47.
  • the two channels 43 and 44 expediently consist of cylindrical chambers which are exactly aligned with one another in the case of merged coupling parts and are enclosed in the connecting plane of the coupling parts 41 and 42 as shown by a sealing ring 48.
  • a (not shown) centering device is present for the merger.
  • this can also be connected to a flushing channel 49 for thinner and possibly pulse air.
  • the channels 46, 47 and 49 are preferably provided with automatically controlled needle or other shut-off valves whose valve seat is disposed directly on the channels 43 and 44, respectively.
  • a peculiarity of in Fig. 3 represented dead space and flushable coupling according to the invention is that when merging coupling parts 41 and 42, a pig body 45 between the two channels 43 and 44 back and forth and here rests with its sealing edges or wiper lips close to the channel walls.
  • the pig body 45 moving in the manner of a piston, is fastened to a piston rod 50 driven by an automatically controlled motor (not shown) for this purpose.
  • a piston rod 50 driven by an automatically controlled motor (not shown) for this purpose.
  • it is as a chamber or Tandemmolch or double-lip piston in the EP 1 172 153 respectively.
  • EP 1 252 936 formed in the annular space 53 between the both end portions provided with sealing edges thinner, for example, is passed through a purge passage 54 which is provided with an associated valve.
  • the pig flushes its walls through the channels 43 and 44 as it moves.
  • a return channel 55 which can also be closed by a valve.
  • the piston rod 50 and its mechanical drive are preferably in the atomizer-side coupling part, here in the container unit 12, since in contrast to the ink supply unit 10 only a single pig with associated drive is required and not one pig per color.
  • a seal 51 is provided on the coupling part.
  • the paint valve is closed again and the pig 45 is driven by the piston rod 50 back into the other coupling part 41, wherein the interior of the coupling by the in the space 53 of the Molch located thinner and rinsed cleaned.
  • the channels 43 and 44 can be rinsed and dried from the channel 49 prior to separation of the coupling parts 41, 42 or after their later re-merging with thinner and pulse air, the pig body 45 can perform similar movements as when refueling.
  • two-stage operated dead space-free media coupling consists of two separable and centered merge coupling parts 61 and 62.
  • the coupling member 61 is also here, for example, on the container 12A, while the other coupling part 62 similar to the part 42 in Fig. 3 arranged in the ink supply unit 10 and connected via the connecting channel 63 to the relevant ring line.
  • a seal 64th is between the two coupling parts 61 and 62.
  • a hollow needle 70 along a central axis 66 of the clutch preferably slidably mounted (or possibly also fixed).
  • the interior of the hollow needle 70 is connected via a channel leading through the coupling part to the container 12A and by a coaxially arranged in the hollow needle, along the axis 66 displaceable valve needle 71 closed at the front end of the hollow needle 70 formed valve seat 72 when the coupling parts separately are.
  • the coupling part 62 is shown a coaxial with a coupling to the central axis 66 cylindrical channel 75, which initially conically narrows to the perpendicular or transverse to the axis 66 extending parting plane 68 of the coupling parts and then up to the parting plane 68 funnel-like again extended.
  • the funnel-like Extension 76 is based on the two coupling parts 61, 62 common parting plane 68 so deep that it receives over the parting plane projecting tip of the hollow needle 70 and forms a seat for the hollow needle tip.
  • a further seal 77 is provided, so that the interior of the hollow needle 70 is sealed to the channel 75 is connected.
  • a further valve needle 80 is coaxially arranged, the conical tip 81 rests with separate coupling to the adjacent to the extension 76 conical inner wall 82 of the channel 75 to close the channel to the outside.
  • the valve needle 80 is slidably mounted in the coupling part 62 and opens the channel 75 in the direction of the coupling part 61 when coating material from the connecting channel 63 is to flow into the hollow needle 70, the interior of which is opened for this purpose by coaxial displacement of the inner valve needle 71, while the hollow needle rests tightly in the extension 76 on the coupling part 62.
  • the coupling part 61 opens radially outside the hollow needle 70, but within the seal 64 provided with a further valve channel 85 for thinner and pulse air in the parting plane 68.
  • a further valve channel 85 for thinner and pulse air in the parting plane 68 For example, at a corresponding point on the radially opposite side of the hollow needle 70 opens a return channel 86th for the thinner.
  • the inner space of the coupling surrounding the hollow needle tip and, with the corresponding position of the hollow needle 70 and the valve needle 80 can thereby also be flushed and dried the interiors opened thereby.
  • the two coupling parts 61 and 62 are brought together for coupling the ink container 12A to one of the ink supply valves and sealed together by means of the seal 64.
  • the hollow needle 70 is operated in two stages, i. its tip is pressed against the inner wall of the extension 76 and opened by parallel displacement of the inner valve needle 71.
  • the valve needle 80 By displacement of the valve needle 80, the ink path is released from the connecting channel 63 into the interior of the hollow needle 70 and from there to the paint container.
  • the hollow needle 70 is moved back again, wherein a possibly remaining, due to the illustrated design but in any case very small color residue can remain in the coupling member 62.
  • an intermediate flushing of the coupling parts take place. In any case, the clutch is flushed in a color change in this way.
  • the invention is not limited to potential separation systems, but for example, suitable for non-electrostatic coating systems, for example with air atomizers.
  • the potential separation unit described is not limited to color change systems, but more generally advantageous wherever two lying at different potential parts of a material supply system to be connected and disconnected.

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  • Application Of Or Painting With Fluid Materials (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Spray Control Apparatus (AREA)
  • Coating Apparatus (AREA)
  • Ink Jet (AREA)

Claims (18)

  1. Procédé pour l'alimentation d'un dispositif de revêtement électrostatique (3) avec un matériau de revêtement de différente couleur,
    dans lequel le matériau de revêtement vient d'une cuve (12A, 12B) dans une unité de séparation du potentiel (1), qui est raccordée à une unité d'alimentation en peinture (10) reliée au potentiel de la terre, et afflue, via un système de conduites de jonction (2), en particulier apte à être écouvillonné, vers le dispositif de revêtement (3),
    et dans lequel le matériau de revêtement est poussé dans le système de conduites de jonction (2) par un écouvillon vers le dispositif de revêtement (3) et/ou en retour vers l'unité d'alimentation en peinture (10), sachant que dans l'unité de séparation du potentiel (1), une cuve (12A, 12B) est raccordée à l'unité d'alimentation en peinture (10) et est remplie, alors que ladite cuve est désolidarisée d'une conduite de jonction (2A, 2B) menant vers le dispositif de revêtement (3) et est éloignée moyennant la formation d'une voie d'isolation électrique, et en vue du vidage est raccordée à la conduite de jonction (2A, 2B), alors qu'elle est désolidarisée de l'unité d'alimentation en peinture (10) et est éloignée moyennant la formation d'une voie d'isolation électrique,
    l'unité d'alimentation en peinture (10) comportant une vanne d'alimentation en peinture (10A, 10B) pour chacune des couleurs à choisi,
    caractérisé en ce que la cuve (12A, 12B) est raccordée directement à la vanne d'alimentation en peinture (10A, 10B) de la couleur à utiliser dans chaque cas.
  2. Procédé selon la revendication 1, caractérisé en ce que la cuve (12A, 12B) est déplacée en va-et-vient, par un système d'entraînement commandé automatiquement, entre les vannes d'alimentation en peinture (10A, 10B) et une vanne de prélèvement de la peinture (14A, 14B), à laquelle est raccordée la conduite de jonction (2A, 2B) menant vers le dispositif de revêtement (3).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le dispositif de revêtement (3) est alimenté à partir d'une première cuve (12A), raccordée à la vanne de prélèvement de la peinture (14A) d'une première conduite de jonction (2A), tandis qu'une deuxième cuve (12B) est raccordée à la vanne d'alimentation en peinture (10B) et est remplie, et en ce que la deuxième cuve (12B) est raccordée ensuite à la vanne de prélèvement de la peinture (14B) d'une deuxième conduite de jonction (2B) menant vers le dispositif de revêtement (3).
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la cuve (12A, 12B), en vue de son raccordement aux vannes d'alimentation en peinture (10A, 10B) disposées dans un plan commun, est déplacée parallèlement à ce plan dans des directions droites orientées transversalement entre elles ou sur au moins une trajectoire circulaire.
  5. Dispositif pour l'alimentation d'un dispositif de revêtement (3), en particulier électrostatique, avec un matériau de revêtement de couleur différente,
    comportant une unité d'alimentation en peinture (10) qui comporte au moins une vanne d'alimentation en peinture (10A, 10B) pour chacune des différentes couleurs à choisir,
    comportant au moins une conduite de jonction (2A, 2B) raccordée ou pouvant être raccordée au dispositif de revêtement (3),
    comportant au moins une cuve (12A, 12B), qui est munie d'un dispositif de raccordement (13) pour le raccordement à l'unité d'alimentation en peinture (10) et/ou à la conduite de jonction (2A, 2B),
    et comportant un système d'entraînement, commandé automatiquement, pour un mouvement relatif entre la cuve (12A, 12B) et les vannes d'alimentation en peinture (10A, 10B) et/ou la conduite de jonction (2A, 2B),
    caractérisé en ce que la cuve (12A, 12B) est munie d'une vanne de raccordement (13), par laquelle ladite cuve peut être raccordée directement à chacune des vannes d'alimentation en peinture (10A, 10B) pour les différentes couleurs et, à l'autre extrémité, à une vanne de prélèvement de la peinture (14A).
  6. Dispositif selon la revendication 5, caractérisé en ce que la cuve (12A, 12B) est reliée à un système d'entraînement commandé automatiquement, par lequel ladite cuve peut être déplacée parallèlement à un plan, dans lequel sont disposées les vannes d'alimentation en peinture (10A, 10B), dans des directions droites orientées transversalement entre elles ou sur au moins une trajectoire circulaire.
  7. Dispositif selon la revendication 5 ou 6, caractérisé en ce que la cuve (12A, 12B) peut être déplacée en va-et-vient entre les vannes d'alimentation en peinture (10A, 10B) et une vanne de prélèvement de la peinture (14A, 14B) de la conduite de jonction (2A, 2B).
  8. Dispositif selon l'une quelconque des revendications 5 à 7, caractérisé en ce que la conduite de jonction (2A, 2B) peut être écouvillonnée, et en ce que la vanne de prélèvement de la peinture (14A, 14B) de la conduite de jonction est disposée au niveau d'un poste d'écouvillonnage (15A, 15B).
  9. Dispositif selon l'une quelconque des revendications 5 à 8, caractérisé en ce que les vannes d'alimentation en peinture (14A, 14B), la cuve (12A, 12B) et la vanne de prélèvement de la peinture (14A, 14B) de la conduite de jonction (2A, 2B) sont logées dans un carter d'un module de séparation du potentiel (1), destiné à être monté, par exemple, à l'extérieur d'une cabine de pulvérisation.
  10. Dispositif selon la revendication 9, caractérisé en ce que le module de séparation du potentiel (1) contient des conduites pour un fluide de lavage et des moyens pour la séparation du potentiel pour lesdites conduites.
  11. Dispositif selon l'une quelconque des revendications 5 à 10, caractérisé en ce que le dispositif de raccordement de la cuve (12A, 12B) est réalisé sous la forme d'une vanne d'arrêt (13), de préférence apte à être commandée automatiquement.
  12. Dispositif de raccordement pour le dispositif selon l'une quelconque des revendications 5 à 11,
    comportant deux éléments de raccord (41, 42) pouvant être détachés l'un de l'autre et être assemblés l'un à l'autre,
    sachant que l'un des éléments de raccord (42) contient un premier conduit central (43) raccordé ou pouvant être raccordé à une conduite (46) pour le matériau de revêtement, tandis que l'autre élément de raccord (41) contient un deuxième conduit central (44), qui est raccordé ou peut être raccordé à une conduite (47) menant vers un dispositif de revêtement (3) ou vers une cuve (12A, 12B) reliée à l'élément de raccord (41) et qui, dans la position assemblée des deux éléments de raccord (41, 42), est aligné ou orienté dans le même axe avec le premier conduit (43),
    caractérisé en ce qu'il est prévu un écouvillon (45) qui, dans la position assemblée des deux éléments de raccord (41, 42), peut être déplacé en va-et-vient entre les deux conduits centraux (43, 44) et, à cette occasion, est en appui étanche avec ses arêtes d'étanchéité ou lèvres de raclage contre les parois des conduits.
  13. Dispositif de raccordement selon la revendication 12, caractérisé en ce que l'écouvillon (45) comporte sur sa périphérie, entre les arêtes d'étanchéité ou lèvres de raclage, un espace intermédiaire (53) annulaire, qui peut être rempli avec un fluide de lavage sortant d'un conduit de lavage (54) débouchant dans la paroi intérieure de l'un des deux conduits centraux (44).
  14. Dispositif de raccordement selon la revendication 12 ou 13, caractérisé en ce que l'un des éléments de raccord (41) contient un conduit de lavage (49) pour introduire un fluide de lavage dans les conduits centraux (43, 44) en dehors de l'écouvillon (45).
  15. Dispositif de raccordement selon l'une quelconque des revendications 12 à 14, caractérisé en ce que l'écouvillon (45) est fixé à une tige de piston (50) actionnée mécaniquement.
  16. Dispositif de raccordement selon le préambule de la revendication 12, caractérisé en ce que l'un des éléments de raccord (61, 62) ou les deux contiennent respectivement un pointeau (71, 80) actionnable automatiquement, qui est monté mobile dans leur conduit central (70, 75) et par lequel le conduit (70, 75) peut être fermé en direction de la face extérieure de l'élément de raccord, laquelle forme le plan de séparation (68) des éléments de raccord (61, 62).
  17. Dispositif de raccordement selon la revendication 16, caractérisé en ce que le pointeau (71) de l'un des éléments de raccord (61) est disposé dans une aiguille creuse (70) formant le conduit central,
    en ce que la pointe de l'aiguille creuse (70), contenant le siège (72) pour le pointeau (71), s'avance en saillie au-delà du plan de séparation (68) dudit élément de raccord (61),
    et en ce que l'autre élément de raccord (62) comporte un élargissement (76) de son conduit central (75), lequel élargissement forme un logement pour la pointe de l'aiguille creuse (70).
  18. Dispositif de raccordement selon la revendication 16 ou 17, caractérisé en ce que dans le plan de séparation (68) de l'un des éléments de raccord (61) débouche un conduit (85), qui est muni d'une vanne et qui est raccordé ou peut être raccordé à une source pour un fluide de lavage.
EP04017646A 2003-07-28 2004-07-26 Méthode et système d'alimentation de peinture pour une installation de revêtement électrostatique et système de liaison pour cela Active EP1502656B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200431549T SI1502656T1 (sl) 2003-07-28 2004-07-26 Postopek za dovajanje barve elektrostatični napravi za nanašanje in sklopilna naprava za ta namen
PL04017646T PL1502656T3 (pl) 2003-07-28 2004-07-26 Sposób zasilania farbą elektrostatycznego urządzenia powlekającego i zespół łączący do niego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10334413 2003-07-28
DE10334413 2003-07-28

Publications (3)

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EP1502656A2 EP1502656A2 (fr) 2005-02-02
EP1502656A3 EP1502656A3 (fr) 2008-11-19
EP1502656B1 true EP1502656B1 (fr) 2010-09-08

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EP04017646A Active EP1502656B1 (fr) 2003-07-28 2004-07-26 Méthode et système d'alimentation de peinture pour une installation de revêtement électrostatique et système de liaison pour cela

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EP (1) EP1502656B1 (fr)
AT (1) ATE480336T1 (fr)
DE (1) DE502004011630D1 (fr)
ES (1) ES2352141T3 (fr)
PL (1) PL1502656T3 (fr)
SI (1) SI1502656T1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2717116T3 (es) 2005-10-07 2019-06-19 Duerr Systems Ag Dispositivo de suministro de agente de revestimiento y procedimiento de funcionamiento correspondiente

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674207A (en) * 1970-11-06 1972-07-04 Emidio J Carbonetti Jr Automated paint spray system
DE19961271A1 (de) * 1999-12-18 2001-07-05 Duerr Systems Gmbh Lackiereinrichtung
DE19961270A1 (de) * 1999-12-18 2001-07-05 Inlac Ind Lackieranlagen Gmbh Lackieranlage
DE10059041C2 (de) * 2000-11-28 2002-11-14 Lactec Ges Fuer Moderne Lackte Verfahren und Vorrichtung zum Fördern von elektrisch leitfähigen Lacken zwischen unterschiedlichen Spannungspotenzialen
DE10223498A1 (de) * 2002-05-27 2003-12-11 Duerr Systems Gmbh Verfahren und System zur Farbversorgung einer elektrostatischen Beschichtungsanlage

Also Published As

Publication number Publication date
SI1502656T1 (sl) 2011-01-31
ATE480336T1 (de) 2010-09-15
ES2352141T3 (es) 2011-02-16
DE502004011630D1 (de) 2010-10-21
EP1502656A3 (fr) 2008-11-19
EP1502656A2 (fr) 2005-02-02
PL1502656T3 (pl) 2011-03-31

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