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EP1108474B1 - Installation de peinture - Google Patents

Installation de peinture Download PDF

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Publication number
EP1108474B1
EP1108474B1 EP00127232A EP00127232A EP1108474B1 EP 1108474 B1 EP1108474 B1 EP 1108474B1 EP 00127232 A EP00127232 A EP 00127232A EP 00127232 A EP00127232 A EP 00127232A EP 1108474 B1 EP1108474 B1 EP 1108474B1
Authority
EP
European Patent Office
Prior art keywords
container
painting system
conduit section
coating material
scraper
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.)
Expired - Lifetime
Application number
EP00127232A
Other languages
German (de)
English (en)
Other versions
EP1108474A3 (fr
EP1108474A2 (fr
Inventor
Frank Dipl.-Ing. Herre
Manfred Michelfelder
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
Publication of EP1108474A2 publication Critical patent/EP1108474A2/fr
Publication of EP1108474A3 publication Critical patent/EP1108474A3/fr
Application granted granted Critical
Publication of EP1108474B1 publication Critical patent/EP1108474B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B05B12/1481—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 comprising pigs, i.e. movable elements sealingly received in supply pipes, for separating different fluids, e.g. liquid coating materials from solvent or air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
    • B05B5/1616—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material
    • B05B5/1625—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material the insulating means comprising an intermediate container alternately connected to the grounded material source for filling, and then disconnected and electrically insulated therefrom
    • B05B5/1641—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material the insulating means comprising an intermediate container alternately connected to the grounded material source for filling, and then disconnected and electrically insulated therefrom an additional container being provided downstream the intermediate container

Definitions

  • the invention relates to a painting system with a Spray device for applying coating material to an object, especially one Motor vehicle body, with two in a row switched as an intermediate reservoir Containers and with a separator for electrostatic isolation at least one of the Receptacle and the downstream spraying device against a feed side so that at least one Receptacle and the sprayer opposite to that painting object during the coating process can be brought to high voltage.
  • Such electrostatic painting devices are e.g. from US 5 340 289 known.
  • To almost the entire amount of paint on the to be able to apply the painting object Spray device and one arranged in front Paint container on the painting device High voltage in the order of more than 50 kV compared to the paint to be kept at earth potential Brought object. Because of the resulting electric field, almost the entire amount of paint is applied applied the object to be painted and the Waste minimized accordingly.
  • first container above the second container which as such open container is designed to be arranged so that the Coating material due to gravity from the top Containers in the second container below can reach, and that over a free-flowing Drain from the first tank.
  • open container is designed to be arranged so that the Coating material due to gravity from the top Containers in the second container below can reach, and that over a free-flowing Drain from the first tank.
  • Such an arrangement already has a continuous coating operation the first upper container during the Coating company filled from the second container, in Connection to this from the supply side electrostatically isolated and disconnected and on the high voltage of the second lower container is brought. In this condition is a refill of the lower container by opening the freely emptying drain of the upper container and thus continuous production operations possible. The High voltage on the upper container can then again switched off and the container for refilling with the Feed side to be connected.
  • a serious disadvantage is the fact that the second lower container designed as an open container have to be. Solvent vapors escape, and it does there is a risk of contamination in the second Can reach containers. Furthermore, it is difficult to second container with solvent, for example clean.
  • the present invention has for its object a Painting system of the type mentioned above improve that with a structurally simple structure without that Requirement of mechanical decoupling of the components a loss-free continuous conveyor operation possible and the disadvantages described above are not occur.
  • Pig bodies are known per se; at least they are like that Resiliently trained to be minimal Excessively insertable in a pipe means and in substantially resilient elastic against the inside of the Line means are applied and still movable are. If flexible ducting means for example made of plastic materials Hoses are used, so can also in essential unyielding pig bodies are used. The use of pig bodies in painting facilities however, was only used for cleaning purposes.
  • a pig in conjunction with one from an electrical insulating material formed a line section electrostatic separator can be formed at which can only be done by moving the pig through the Line section an electrostatic insulation at a High voltage painting device can be achieved without that mechanical separation of components of the Painting equipment is required.
  • By moving through of the pig through the line section becomes its interior Surface as if by a lip or squeegee from any electrically conductive liquid (Coating material, detergent) and it can high-voltage insulation can thereby be achieved.
  • the invention is not electrically or in the essential non-conductive voltage insulation over the Length of pigged line section reached. This includes it is understood that when a voltage of 100 kV over a length of the line section of approx. 300 mm Current flow less than 50 ⁇ A, preferably less than 30 ⁇ A.
  • the Piston means can be a minimal with coating material limit fillable volume, which is in view of a Solvent cleaning proves to be very advantageous because not the entire volume of the receptacle Solvent needs to be filled.
  • the Return movement can be beneficial under the action of the coating material take place, for example, in that a control pressure within the second receptacle is specified, which with appropriate ventilation of the said line section the pig in the opposite Pushes back direction while doing the second Fills the line section again with coating material.
  • the figure shows a painting installation according to the invention, which for coating an object using a color changer 2 with a ring line system, not shown, which for example different paint colors, solvents and can also lead to compressed air.
  • a color changer 2 closes a pressure control device 4 and a quantity metering device 6.
  • the paint shop further includes a first and a second as Intermediate reservoir serving receptacles 8 and 10, respectively are designed as closed pressure vessels.
  • the a second receptacle 10 is connected downstream Spray device 12, by means of which Coating material atomized and towards you applied or sprayed on the coated object can be.
  • the feed side of the first receptacle 8 is one electrostatic separator 16 and 14 provided to the second receptacle 10 and the spray device 12 towards an object to be coated To bring high voltage.
  • the feed side Separating device 16 can counter the first receptacle 8 the supply side insulated and brought to high voltage become.
  • Both separating devices 14 and 16 comprise one Line section 18 or 20 made of insulating material and a pig 22 or 24 movable therein. 24 is within the respective line section 16 or 18 with a control valve 26 or 28 on one side Compressed air can be applied and to the right in the figure movable.
  • the pig 22, 24 limits the in the Line section 18, 20 located color column and displaces this to the right in the figure, i.e. in the respective receptacle 8, 10 into it.
  • the squeegee Newt 22, 24 the color of the inner surface of the Line sections 18, 20. So these are quasi from electrically conductive coating material cleaned, and it can provide high voltage insulation in this way can be achieved.
  • the length of the line sections 18, 20 is at least 300 mm and it could in this way high voltage insulation can be achieved such that when a high voltage of 100 kV is applied across the Line section 18, 20 a current of less than 50 ⁇ A, preferably less than 30 ⁇ A, could be measured, which has proven to be sufficiently isolating.
  • a high voltage of 100 kV is applied across the Line section 18, 20 a current of less than 50 ⁇ A, preferably less than 30 ⁇ A, could be measured, which has proven to be sufficiently isolating.
  • a painting cycle is described below.
  • both Piston means 34, 36 are in the lower position.
  • the respective position of the piston means 34, 36 can by Level sensors 38, 40 determined and to control or regulatory purposes.
  • the two pigs 22, 24 are located in its left end position in the figure.
  • opening all valves in the paint supply to the Spray device 12 can coating material from the Ring line system up to the second receptacle 10 reach.
  • An adjoining shut-off valve 42 in the line to the spray device 12 is closed.
  • the entire paint shop is at earth potential.
  • the second receptacle 10 and the downstream spray device 12 can now High voltage (about 100 kV) and the Coating process can after opening the valve 42 and Commissioning of a further conveyor device 54 and a pressure regulator 56 can be started.
  • the first receptacle 8 fills what is expedient in that the pressure is above the piston means 36 is lowered to atmospheric pressure.
  • a desired level which is indicated by the Level sensors 40 can be determined is about the control valve 28 compressed air on the in the drawing left side of the pig 24, and the pig 24 is in the figure moves to the right until it is in front of the valve 32 reached its end position.
  • the first container 8 and the components connected to it are now also on the same high voltage as the second one Receiving container 10 and the spray device 12 brought.
  • the Valve 30 opened and due to that within the second Receiving container 10 prevailing higher pressure Atmospheric pressure in the first receptacle 8, and in the Line section 18 is the pig 2 through Coating material from the second container 10 back in its left end position moves, that with the reference symbol 58 and slightly to the left of the mouth of the Outlet line 60 from the first container 8 is provided.
  • the first container 8 can now be opened again Ground potential and by opening valve 32 the pig 24 in its right end position can again in the left end position shown in the figure be moved, and under the effect of the rest of the Container 8 located coating material. Of the Container 8 can then be refilled.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Materials For Medical Uses (AREA)
  • Paints Or Removers (AREA)

Claims (11)

  1. Installation de peinture avec un dispositif d'aspersion (12) pour l'application d'une matière à enduire sur un objet, en particulier une carrosserie de véhicule automobile, avec deux réservoirs de réception (8, 10) montés l'un derrière l'autre servant de réservoirs intermédiaires et avec un dispositif de séparation (14, 16) pour l'isolation électrostatique contre un côté alimentation d'au moins l'un des réservoirs de réception (10) et du dispositif d'aspersion (12) monté en aval, de sorte qu'au moins l'un des réservoirs de réception (10) et le dispositif d'aspersion (12) peuvent être mis sous haute tension par rapport à l'objet à peindre, caractérisée en ce que le dispositif de séparation électrostatique (14) comprend un tronçon de canalisation (18) isolant électriquement, prévu entre le premier et le second réservoir de réception (8, 10), qui sert également à l'alimentation en peinture des deux réservoirs de réception (8, 10), et un écouvillon (22) déplaçable selon un mouvement de va et vient dans le tronçon de canalisation (18) qui, lors de son passage à travers le tronçon de canalisation (18), libère la surface intérieure de celui-ci de la matière d'enduction électroconductrice.
  2. Installation de peinture selon la revendication 1, caractérisée en ce que le tronçon de canalisation (18) a une longueur d'au moins 300 mm.
  3. Installation de peinture selon la revendication 1 ou 2, caractérisée en ce que le tronçon de canalisation (18) est fait dans une matière de tuyau flexible plastique résistante à haute tension ou constitué par un tube en verre à haute rigidité résistant à la rupture.
  4. Installation de peinture selon la revendication 1, 2 ou 3, caractérisée en ce que le potentiel électrique est supérieur à 50 kV, de préférence supérieur à 70 kV, en particulier entre 70 kV et 100 kV.
  5. Installation de peinture selon l'une quelconque des revendications précédentes, caractérisée en ce que l'écouvillon (22, 24) comporte au moins une moulure ou une lèvre servant de moyen d'étanchéité ou de décharge et applicable sous tension contre la surface intérieure du tronçon de canalisation.
  6. Installation de peinture selon l'une quelconque des revendications précédentes, caractérisée en ce que, d'un côté et/ou de l'autre côté du tronçon de canalisation (18, 20), il est prévu un raccordement d'alimentation pour un fluide de refoulement pour faire passer l'écouvillon (22, 24) à travers le tronçon de canalisation (18, 20).
  7. Installation de peinture selon la revendication 6, caractérisée en ce que le fluide de refoulement est gazeux.
  8. Installation de peinture selon l'une quelconque des revendications précédentes, caractérisée en ce qu'il est prévu également du côté alimentation du premier réservoir de réception (8), un tronçon de canalisation (20) isolant électriquement avec un écouvillon (24) déplaçable à travers celui-ci, qui forment un dispositif de séparation (16) isolant électriquement.
  9. Installation de peinture selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins le second réservoir de réception (10) est conçu comme un réservoir fermé étanche à la pression.
  10. Installation de peinture selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins le second réservoir de réception (10) comprend un moyen formant piston (34) limitant d'un côté le volume de remplissage, qui peut être alimenté en pression de commande de l'autre côté.
  11. Installation de peinture selon l'une quelconque des revendications précédentes, caractérisée en ce que l'écouvillon (22, 24) peut être alimenté d'un côté par un moyen de commande, en particulier par de l'air comprimé, et en ce qu'il est en contact permanent avec la matière d'enduction de l'autre côté.
EP00127232A 1999-12-18 2000-12-15 Installation de peinture Expired - Lifetime EP1108474B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19961270 1999-12-18
DE19961270A DE19961270A1 (de) 1999-12-18 1999-12-18 Lackieranlage

Publications (3)

Publication Number Publication Date
EP1108474A2 EP1108474A2 (fr) 2001-06-20
EP1108474A3 EP1108474A3 (fr) 2003-10-15
EP1108474B1 true EP1108474B1 (fr) 2004-11-17

Family

ID=7933291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00127232A Expired - Lifetime EP1108474B1 (fr) 1999-12-18 2000-12-15 Installation de peinture

Country Status (4)

Country Link
EP (1) EP1108474B1 (fr)
AT (1) ATE282478T1 (fr)
DE (2) DE19961270A1 (fr)
ES (1) ES2232374T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7584771B2 (en) 2002-05-07 2009-09-08 Durr Systems, Inc. Method and apparatus for delivering paint to an applicator and flushing same

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE10211244A1 (de) * 2002-03-13 2003-10-23 Lactec Ges Fuer Moderne Lackte Lackieranlage zum Aufbringen von flüssigem Beschichtungsmaterial
ES2252576T3 (es) * 2002-05-07 2006-05-16 Durr Systems Gmbh Procedidmiento y aparato para proporcionar pintura a un aplicador y para limpiarlo.
DE10223498A1 (de) 2002-05-27 2003-12-11 Duerr Systems Gmbh Verfahren und System zur Farbversorgung einer elektrostatischen Beschichtungsanlage
EP1502656B1 (fr) * 2003-07-28 2010-09-08 Dürr Systems GmbH Méthode et système d'alimentation de peinture pour une installation de revêtement électrostatique et système de liaison pour cela
DE102005048223A1 (de) * 2005-10-07 2007-04-19 Dürr Systems GmbH Beschichtungsmittel-Versorgungseinrichtung und zugehöriges Betriebsverfahren
DE102005060959B4 (de) * 2005-10-07 2024-11-21 Dürr Systems Ag Beschichtungsmittel-Versorgungseinrichtung und zugehöriges Betriebsverfahren
EP2810719B1 (fr) 2005-10-07 2018-06-20 Dürr Systems AG Dispositif d'alimentation pour un agent de revêtement et correspondant procédé de fonctionnement
US8020784B2 (en) 2005-10-07 2011-09-20 Durr Systems Inc. Coating material supply installation and associated operating procedure
JP4599385B2 (ja) * 2007-10-16 2010-12-15 本田技研工業株式会社 静電塗装方法及び同装置
DE102014016552A1 (de) * 2014-11-08 2016-05-12 Eisenmann Se Beschichtungssystem zum Beschichten von Gegenständen
DE102016001544A1 (de) * 2016-02-10 2017-08-10 Eisenmann Se Isolationseinrichtung sowie Beschichtungssystem hiermit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL187613C (nl) * 1978-01-11 1991-12-02 Akzo Nv Inrichting voor het elektrostatisch verspuiten van elektrisch geleidende lak.
US5221194A (en) * 1990-07-18 1993-06-22 Nordson Corporation Apparatus for electrostatically isolating and pumping conductive coating materials
DE19805938A1 (de) * 1998-02-13 1999-08-19 Lactec Gmbh Verfahren und Vorrichtung zum Beschichten von Teilen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7584771B2 (en) 2002-05-07 2009-09-08 Durr Systems, Inc. Method and apparatus for delivering paint to an applicator and flushing same

Also Published As

Publication number Publication date
DE50008659D1 (de) 2004-12-23
ES2232374T3 (es) 2005-06-01
ATE282478T1 (de) 2004-12-15
DE19961270A1 (de) 2001-07-05
EP1108474A3 (fr) 2003-10-15
EP1108474A2 (fr) 2001-06-20

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