EP0455111A1 - Installation pour revêtir en série des pièces d'oeuvre d'un matériau de revêtement conducteur - Google Patents

Installation pour revêtir en série des pièces d'oeuvre d'un matériau de revêtement conducteur Download PDF

Info

Publication number
EP0455111A1
EP0455111A1 EP91106544A EP91106544A EP0455111A1 EP 0455111 A1 EP0455111 A1 EP 0455111A1 EP 91106544 A EP91106544 A EP 91106544A EP 91106544 A EP91106544 A EP 91106544A EP 0455111 A1 EP0455111 A1 EP 0455111A1
Authority
EP
European Patent Office
Prior art keywords
intermediate container
coating
container
valve
outlet
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
EP91106544A
Other languages
German (de)
English (en)
Other versions
EP0455111B1 (fr
Inventor
Rolf Schneider
Kurt Dipl.-Ing. Vetter
Fred Luderer
Michael Baumann
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 GmbH
Original Assignee
Duerr GmbH
Behr Industrieanlagen GmbH and Co KG
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 GmbH, Behr Industrieanlagen GmbH and Co KG filed Critical Duerr GmbH
Publication of EP0455111A1 publication Critical patent/EP0455111A1/fr
Application granted granted Critical
Publication of EP0455111B1 publication Critical patent/EP0455111B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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

Definitions

  • the invention relates to a system according to the preamble of claim 1.
  • the spray head of rotary atomizers or the like is connected to high voltage in order to thereby generate the field which charges the sprayed coating particles between the spray head and the grounded object to be coated.
  • a coating material with high electrical conductivity such as the environmentally friendly water-soluble paints
  • the insulation resistance via the line connecting the spray head to the paint supply system is too low if the supply system is at ground potential.
  • the supply system which usually consists of ring lines for the individual colors, is to be grounded, since otherwise not only would considerable expenditure of insulation be required, but also the danger of explosive discharges would exist due to the large electrical capacity.
  • a separate storage container for each color, which is arranged insulated from earth and from the other containers and via a color changer and a connecting line which is at high voltage potential horizontal spray device feeds.
  • the connecting line is flushed with a given color and before changing to another color with solvent (water) and dried with compressed air in order to maintain the required insulation for the container which is subsequently connected to the spraying device.
  • solvent water
  • this system is structurally complex and bulky. There are also color losses when emptying and flushing the insulating lines and the need to dispose of the flushing agent.
  • the same problem occurs with a method known from DE-OS 37 17 929, in which the color changer of an earthed supply system leads to an intermediate container and from there leads to the spraying device for electrical insulation and is dried.
  • the invention has for its object to provide a system that requires little space and little construction.
  • the invention has the advantage that you can get by with a convenient design of the system with a single intermediate container (for each of the selectable coating materials of different colors and possibly per "level" of several atomizers in a spray booth), without this configuration being necessary when Fill the intermediate container to switch off the high voltage.
  • the system can be made even simpler if the high voltage is switched off when the intermediate container is filled.
  • an additional storage container serving as a buffer is connected to the outlet of the intermediate container, there is no longer any need for coating breaks for the movements of the intermediate container; this also gives the possibility of a single common intermediate container arrangement (per color) for all connected atomizers, e.g. to be used for all "levels" consisting of several atomizers in one spray booth.
  • an earthed supply system of which only one filling valve 1 with a material supply line 2 is shown, is intended to supply a device, which is connected to a coating device which is at high voltage during operation and, in the example shown, contains a removal valve 4 with a line 5 leading to the coating device (not shown).
  • an intermediate container 7 is used, which is periodically filled alternately by the supply system in a manner known per se, the contents of which are grounded, and then emptied towards the coating device, the contents of which are emptied the high voltage of the coating device is charged and isolated from the supply system.
  • the intermediate container 7 shown is an elongated, with the exception of closable inlets and outlets for coating material and air, completely closed cylinders with a round, flat or any other cross section, which is pivotally mounted about a horizontal axis 8 lying transversely to its longitudinal axis, for example on a Foot 9 made of insulating material standing vertically on the floor. According to a practical example, it can be dimensioned for a content of about 4 liters.
  • the intermediate container 7 is mounted approximately at the middle between its two ends, at each of which there is a valve 11 or 12, of which one valve 11 serves as the inlet and the other valve 12 serves as the outlet of the intermediate container 7.
  • the valve 11 can be coupled and detached from the fixed filling valve 1, while the valve 12 can be detachably coupled in a similar manner to the removal valve 4, which stands on an isolator 14, since it is separated from the conductive coating material by the Sprayer leading line at Coating operation is placed on high voltage.
  • the mouths of the valves 11 and 12 are inclined in the pivoting plane of the intermediate container 7 as shown at such an angle against the longitudinal axis of the container that they are aligned with the mouth when coupling to the fixed valve 1 or 4.
  • Coupling can be facilitated by conical or appropriately funnel-shaped design of the mouths.
  • By appropriate design of the valves can be ensured that when coupling together a liquid-tight liquid connection between the valve 11 and the line 2 or between the valve 12 and the line 5 and the valves 11 and 12 and 1 and 4 each automatically close when the valve 11 or 12 is uncoupled by the pivoting movements of the intermediate container 7 and pivoted away.
  • a preferably pneumatic piston-cylinder unit 14 is provided, which is located on the one hand on the foot 9 and on the other hand is supported on the intermediate container 7.
  • the arrangement shown can be in its entirety, that is to say including the additional intermediate containers required for further selectable coating materials of a different color, in a completely closed housing 16 made of insulating material, which is arranged on one side or preferably as part of a spray booth.
  • the line 5 is led through the wall of this housing into the spray booth, where it can supply at least one "level" from several atomizers.
  • the height of the housing 16 can be on the order of 1 m.
  • the distance between the grounded fill valve and the inlet valve 11 of the The intermediate container 7 is sufficiently larger than the flashover distance of the high voltage applied when the intermediate container is pivoted into the emptying position shown.
  • the intermediate container 7 can be quickly and easily pivoted into its filling position and pivoted back into the emptying position shown, for which the coating breaks can be used, for example, in the embodiment shown, in which the group of spray devices of a "level" after coating a vehicle body in a spray booth waiting for the next body.
  • the intermediate container 7 To empty the intermediate container 7, it can be expediently placed under controlled pressure, which has the advantage that it does not have to be followed by a pump or the like provided specifically for this purpose.
  • the intermediate container 7 is designed to be pressure-tight and, when emptied, it is closed air-tight and provided with an inlet valve (not shown) for compressed air. Furthermore, a vent valve (also not shown) is provided for the filling process.
  • the pressure set in the intermediate container 7 is expediently lower than that of the supply system, e.g. about 2-4.5.105 Pa.
  • the illustrated embodiment can be simplified to the extent that the intermediate container 7 instead of the couplable valves 12 and 4 at its outlet is also constantly liquid-tight could be connected to the line 5 leading to the coating device.
  • This connection would then be arranged to be movable or flexible so that it could follow the pivoting movements of the intermediate container; for example, it could consist of a flexible piece of hose firmly connected to the intermediate container.
  • it may be more convenient to move the pivot axis of the intermediate container in the vicinity of its outlet end.
  • the high voltage is switched off when the intermediate container is filled, for example during the above-mentioned coating breaks in a spray booth.
  • the buffer tank (not shown) could be connected to line 5, for example.
  • a buffer container is particularly useful in the illustrated embodiment with the outlet of the intermediate container 7 that can be uncoupled from the removal valve 4. If, for example, the buffer tank is connected to the end of line 5 or at another point, there is the possibility, during breaks in operation, to periodically pressurize line 5 accordingly by periodically changing pressure of the buffer store, thereby preventing the coating material from settling in line 5 and the latter Viscosity can be maintained.
  • the system described above can be modified in such a way that the intermediate container (7) is immovably mounted and instead the filling valve (1) of the supply system and / or the removal valve (4) of the coating device for filling and emptying the container alternate periodically with respect to the corresponding valves ( 11, 12) of the container can be moved.
  • the filling or removal valve (1, 4) up and down for coupling and uncoupling.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
EP91106544A 1990-04-30 1991-04-23 Installation pour revêtir en série des pièces d'oeuvre d'un matériau de revêtement conducteur Expired - Lifetime EP0455111B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4013941 1990-04-30
DE4013941A DE4013941A1 (de) 1990-04-30 1990-04-30 Anlage zum serienweisen beschichten von werkstuecken mit leitfaehigem beschichtungsmaterial

Publications (2)

Publication Number Publication Date
EP0455111A1 true EP0455111A1 (fr) 1991-11-06
EP0455111B1 EP0455111B1 (fr) 1994-09-07

Family

ID=6405491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106544A Expired - Lifetime EP0455111B1 (fr) 1990-04-30 1991-04-23 Installation pour revêtir en série des pièces d'oeuvre d'un matériau de revêtement conducteur

Country Status (2)

Country Link
EP (1) EP0455111B1 (fr)
DE (2) DE4013941A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282085A (en) * 1993-08-18 1995-03-29 John Stephen Griffiths Paint supply apparatus
US6422491B1 (en) 1997-12-18 2002-07-23 Lactec Gmbh Gesellschaft Fuer Moderne Lackiertechnik Method and device for isolating an electro-conductive flowing medium
DE10064065B4 (de) * 1999-12-22 2006-07-27 Dürr Systems GmbH Beschichtungssystem für die automatisierte Beschichtungstechnik

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19610588B4 (de) * 1996-03-18 2010-08-05 Dürr Systems GmbH Beschichtungsmaschine mit auswechselbarem Behälter
DE19610589A1 (de) * 1996-03-18 1997-09-25 Duerr Gmbh & Co Verfahren und System zur Farbversorgung einer Beschichtungsanlage
DE19632325A1 (de) * 1996-08-10 1998-02-12 Herberts Gmbh Vorrichtung zur Lackierung von Kraftfahrzeugkarossen
AU4378997A (en) 1996-08-10 1998-03-06 Herberts Gesellschaft Mit Beschrankter Haftung Painting device and method
DE19704829A1 (de) * 1997-02-08 1998-08-20 Herberts Gmbh Vorrichtung und Verfahren zur Lackierung
DE19632326C1 (de) * 1996-08-10 1998-01-15 Herberts Gmbh Vorrichtung und Verfahren zur Serienlackierung von Kraftfahrzeugkarossen
DE10010175B4 (de) * 2000-03-02 2016-09-29 Dürr Systems GmbH Beschichtungsstoff-Wechselsystem und Beschichtungssystem für die automatisierte Beschichtungstechnik sowie Verfahren zum automatisierten Beschichten
DE10120077B4 (de) * 2001-04-24 2006-07-27 Dürr Systems GmbH Beschichtungssystem für die automatisierte Beschichtungstechnik

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014221A1 (de) * 1979-04-24 1980-11-13 Champion Spark Plug Co Verfahren und vorrichtung zum elektrostatischen spritzen
DE2900660C2 (de) * 1978-01-11 1983-08-18 Akzo Gmbh, 5600 Wuppertal Verfahren und Vorrichtung zum elektrostatischen Spritzen von elektrisch leitfähigen Lacken
DE3717929A1 (de) * 1987-05-27 1988-12-08 Behr Industrieanlagen Verfahren und anlage zum elektrostatischen beschichten mit leitfaehigem material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122320A (en) * 1958-03-20 1964-02-25 Ford Motor Co Method for filling electrically charged receptacle
US3892357A (en) * 1974-04-30 1975-07-01 Nordson Corp Electrostatic spray apparatus and method
US4085892A (en) * 1976-04-21 1978-04-25 Dalton Robert E Continuously energized electrostatic coating voltage block
DE3440381A1 (de) * 1984-11-05 1986-05-07 Ransburg Gmbh, 6056 Heusenstamm Verfahren und vorrichtung zum automatischen elektrostatischen spruehbeschichten
DE3831785A1 (de) * 1988-09-19 1990-03-29 Lenhardt Maschinenbau Verfahren und vorrichtung zum nachfuellen einer hochviskosen, pastoesen substanz in einen speicher einer vorrichtung zum auftragen dieser substanz auf werkstuecke

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2900660C2 (de) * 1978-01-11 1983-08-18 Akzo Gmbh, 5600 Wuppertal Verfahren und Vorrichtung zum elektrostatischen Spritzen von elektrisch leitfähigen Lacken
DE3014221A1 (de) * 1979-04-24 1980-11-13 Champion Spark Plug Co Verfahren und vorrichtung zum elektrostatischen spritzen
DE3717929A1 (de) * 1987-05-27 1988-12-08 Behr Industrieanlagen Verfahren und anlage zum elektrostatischen beschichten mit leitfaehigem material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282085A (en) * 1993-08-18 1995-03-29 John Stephen Griffiths Paint supply apparatus
US6422491B1 (en) 1997-12-18 2002-07-23 Lactec Gmbh Gesellschaft Fuer Moderne Lackiertechnik Method and device for isolating an electro-conductive flowing medium
DE10064065B4 (de) * 1999-12-22 2006-07-27 Dürr Systems GmbH Beschichtungssystem für die automatisierte Beschichtungstechnik

Also Published As

Publication number Publication date
EP0455111B1 (fr) 1994-09-07
DE59102796D1 (de) 1994-10-13
DE4013941A1 (de) 1991-10-31

Similar Documents

Publication Publication Date Title
EP0292778B1 (fr) Procédé et installation de revêtement électrostatique avec un produit de revêtement conducteur
DE3014221C2 (fr)
DE3440381C2 (fr)
DE2937890C2 (de) Vorrichtung zur Lackzuführung zu einem elektrostatischen Farbgeber
EP1108475B1 (fr) Installation de peinture
DE19545144A1 (de) Vorrichtung zum Zuführen leitfähiger Beschichtungsmaterialien, die Überführungseinheiten mit einer kombinierten Pendel- und Pumpeneinrichtung umfaßt
EP0455111B1 (fr) Installation pour revêtir en série des pièces d'oeuvre d'un matériau de revêtement conducteur
EP1104333A1 (fr) Pistolet de pulverisation pour l'application d'un revetement sur des objets
DE19937426A1 (de) Lackiervorrichtung
DE2020055A1 (de) Verfahren und Vorrichtung zum UEberziehen von Gegenstaenden mit pulverfoermigen Stoffen
DE1577913A1 (de) Vorrichtung zum Zerstaeuben und Auftragen von Teilchen
EP0455109B1 (fr) Procédé et installation de revêtement en series de pièces avec un produit de revêtement conducteur
EP1369183B1 (fr) Méthode et système d'alimentation de peinture pour une installation de revêtement électrostatique
EP0455110B1 (fr) Installation pour revêtir en série des pièces d'oeuvre d'un matériau de revêtement conducteur
DE2424009B2 (de) Foerdervorrichtung fuer fluidfoermiges pulver
EP2810719B1 (fr) Dispositif d'alimentation pour un agent de revêtement et correspondant procédé de fonctionnement
EP0455106B1 (fr) Procédé et installation pour revêtir en série des pièces d'oeuvre d'un matériau de revêtement conducteur
EP1010469B1 (fr) Système et procédé d'alimentation en peinture d'une installation de revêtement électrostatique
DE4117613A1 (de) Spruehbeschichtungsvorrichtung
DE19940542A1 (de) Verfahren und Anordnung zum Transport von elektrisch leitfähigem Lack
EP1124644A1 (fr) Procede et dispositif servant a l'acheminement de peinture electriquement conductrice
DE4013939A1 (de) Beschichtungsanlage zum serienweisen beschichten von werkstuecken mit elektrisch leitfaehigem beschichtungsmaterial
DE2849261C2 (de) Verfahren und Einrichtung zum Sprühbeschichten von Gegenständen mit Pulver
DE19715294C1 (de) Lackieranlage und Verfahren zum Betreiben einer Lackieranlage
DE60226348T2 (de) Vorrichtung zum entfernen und absaugen von an aussenwänden von pulveransaugrohren haftendem pulver

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE ES FR GB IT NL SE

17P Request for examination filed

Effective date: 19920505

17Q First examination report despatched

Effective date: 19930316

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DUERR GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE ES FR GB IT NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19940907

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940907

Ref country code: BE

Effective date: 19940907

Ref country code: FR

Effective date: 19940907

Ref country code: GB

Effective date: 19940907

Ref country code: NL

Effective date: 19940907

REF Corresponds to:

Ref document number: 59102796

Country of ref document: DE

Date of ref document: 19941013

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19941207

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19940907

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960625

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980101