EP0541745A1 - Dispositif de revetement par pulverisation. - Google Patents

Dispositif de revetement par pulverisation.

Info

Publication number
EP0541745A1
EP0541745A1 EP92910645A EP92910645A EP0541745A1 EP 0541745 A1 EP0541745 A1 EP 0541745A1 EP 92910645 A EP92910645 A EP 92910645A EP 92910645 A EP92910645 A EP 92910645A EP 0541745 A1 EP0541745 A1 EP 0541745A1
Authority
EP
European Patent Office
Prior art keywords
coating
switching device
coating material
valve
path section
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
EP92910645A
Other languages
German (de)
English (en)
Other versions
EP0541745B1 (fr
Inventor
Joerg Eysen
Thomas Rehmsmeyer
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.)
ABB Flexible Automation GmbH
Original Assignee
ABB Flaekt Ransburg GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6432729&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0541745(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ABB Flaekt Ransburg GmbH filed Critical ABB Flaekt Ransburg GmbH
Publication of EP0541745A1 publication Critical patent/EP0541745A1/fr
Application granted granted Critical
Publication of EP0541745B1 publication Critical patent/EP0541745B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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

Definitions

  • the invention relates to a spray coating device according to the preamble of claim 1.
  • Such a spray coating device is known from DE-PS 32 01 930 C2.
  • coating material colored or transparent, paint, varnish
  • Coating material changer and from this via a flow path to an atomizing device which sprays the coating material onto an object to be coated. If the coating material changer is no longer fed, the coating material is Flow path still filled with coating material. So that this coating material is not lost, it is pressed out of the flow path by an additional fluid (air, but preferably liquid, in particular solvent) starting from the coating material changer to close to the atomizing element of the atomizing device and sprayed onto the object to be coated by the atomizing device. The remaining residues in the flow path are then expelled from the flow path by the same or a different fluid by means of a continuous or intermittent fluid surge.
  • the object of the invention is to reduce the time required for cleaning the flow path when changing from one coating material to another coating material and to reduce the amount of solvent required for this. At the same time, the task of being able to clean the atomizer device alone in less breaks than previously required, with less solvent than was previously required, should be achieved in coating breaks, when work is subsequently continued with different or the same coating material.
  • the drawing shows a spray coating device according to the invention for the automatic application of liquid coating material to in particular motor vehicle bodies by means of an atomizing device 2 for several, for example three, coating materials, in particular paints in a pressure vessel 4, 6 and 8.
  • the atomizing device 2 contains known means for electrostatic Charging the coating material.
  • a coating material changer 10 hereinafter called a color changer, contains, for example, six valves, preferably 2/2-way valves 12/1, 12/2, 12/3, 12/4, 12/5 and 12 / 6, so that, depending on the open directional valve, the coating material in question reaches the atomizer device 2 via a flow path 14.
  • a pressure regulator 16 which is effective for all coating materials and is referred to below as the color pressure regulator 16.
  • the color pressure regulator 16 For simplification, it is assumed that there is a first color in the pressure vessel 4, a second color in the pressure vessel 6, a third color in the pressure vessel 8 and a solvent in another pressure vessel 18.
  • a compressed air source 20 is via a check valve 22/1 and a 2/2
  • the solvent of the pressure vessel 18 can be connected to the flow path 14 via a solvent pressure regulator 24/1, a check valve 22/2 and a 2/2-way valve 12/5 of the color changer 10. Furthermore, the solvent pressure vessel 18 via a pressure regulator 24/2, a check valve 22/3 and a 2/2-way valve 12/6 of the color changer 10 can be connected in terms of flow to the flow path 14. In addition, the solvent pressure vessel 18 can be connected in terms of flow via a pressure regulator 24/3 and a subsequent check valve 22/4 to a 2/2-way valve 12/7 of a secondary flushing device 30.
  • the secondary flushing device 30 also contains a 2/2-way valve 12/8, which is connected in terms of flow to a compressed air source 20 via a check valve 22/5.
  • the outputs 32 and 34 of the two 2/2-way valves 12/7 and 12/8 are connected to one another in terms of flow and connected to a fluid connection 36 of a first switchover device 38.
  • the first switching device 38 is preferably a 3/2-way valve.
  • the first switching device 38 divides the flow path 14 into a first path section 40 leading from the color changer 10 to the first switching device 38 and a second path section 42 leading from the first switching device 38, from its flow connection 36, to the atomizing element 44 of the atomizing device 2.
  • the atomizing element 44 is preferred a rotating bell.
  • a measuring cell 46 is located in the first path section 40.
  • the 3/2-way valve of the first switching device 38 connects the first path section 40 in terms of flow with the second path section 42 in the switching position shown.
  • paint can be drawn from one of the pressure vessels 4 , 6 or 8 via the relevant valve 12/1 or 12/2 or 12/3 of the color changer 10 to the first path section 40 and from there via the first switching device 38 and the subsequent second path section 42 of the flow path 14 to the atomizing element 44 of the atomizing device 2 reach. If after this ink supply all valves 12/1, 12/2 and 12/3 of the different colors are closed, remains in the Flow path 14 (40, 42) a color liquid column.
  • the atomizing device 2 contains a second switching device 50 in the form of two valves 52 and 54.
  • the one valve 52 is located in the second path section 42 immediately upstream of the atomizing element 44, and the mentioned column end of the extended column of paint lies on the short intermediate piece 56 between this valve 52 and the atomizing element 44.
  • the other valve 54 of the second switching device 50 connects the second path section 42 directly upstream of the one valve 52 to a second return line 58 which leads to a collecting container 60.
  • the one valve 52 is open and the other valve 54 of the second switching device 50 is closed.
  • the two valves 12/7 and 12/8 of the secondary flushing device 30 are closed.
  • the coating material and the solvent are conveyed by compressed air sources 20 connected to them.
  • the flow path 14 must be cleaned of coating material residues.
  • the solvent can escape through the one valve 52 of the second switching device 50 on the atomizing member 44, or can preferably be conveyed into the collecting container 60 when the valve 52 is closed and the further valve 54 of the second return line 58 is open.
  • the 3/2-way valve of the first switching device 38 is switched to a different position, according to the invention, to a so-called “rinsing” position. In this "rinsing" position, the two path sections 40 and 42 are no longer fluidly connected to one another via the flow connection 36 of the first switching device 38, but are separated from one another in the first switching device 38.
  • the first path section 40 is connected via the first switching device 38 to a first return line 62, which likewise leads into the collecting container 60.
  • the solvent (or another rinsing agent) which is conveyed from the color changer 10 through the first path section 40 to the first switching device 38 does not get into the second path section 42, but directly from the first switching device 38 into the collecting container 60 , while the one valve 52 of the atomizing device 2 is opened and the other valve 54 is closed, the valves 12/7 and 12/8 of the secondary flushing device 30 are alternately opened and closed and as a result a solvent (or another flushing agent) is alternately released from the pressure container 18 via the pressure regulator 24/3 with a relatively high frequency sequence and the 2/2-way valve 12/7 and the next time compressed air from the compressed air source 20 via the 2/2-way valve 12/8 of the secondary flushing device 30 at the fluid connection 36 of the first switching device 38 into the upstream start of the second way section 42 and through conveyed through this
  • One valve 52 is thus always closed and the other valve 54 of the second switching device 50 is always open.
  • the one valve 52 can be briefly opened and at the same time the other valve 54 can be closed, so that then a shock of solvent and / or air from the secondary flushing device 30 the second path section 42 is dispensed via the atomizing device 44.
  • the flow path 14 is thus divided during the cleaning process into two path sections 40 and 42, which are preferably each of approximately the same length, at least each path section should still have a substantial length. If the flow path 14 is halved on two path sections, the time required for rinsing or cleaning the two path sections is also halved if this cleaning or rinsing takes place in parallel, that is to say simultaneously, according to the invention. At the same time, the consumption of cleaning agents or solvents is reduced, since the cleaning effect is greater on short distances than on long distances and less soiled cleaning material or solvent is more receptive to the paint to be cleaned.
  • Solvent pressure regulator 24/1 switch to the pressure required to flush with solvent (this also adjusts the amount of solvent);
  • the color pressure regulator 16 at the same time set the color pressure regulator 16 to the maximum value so that the solvent can flow freely through it; simultaneously switching the 3/2-way valve of the first switching device 38, so that no solvent can flow from the color changer 10 via the first switching device 38 to the atomizer device 2, but the flow path for solvent and air from the color changer via the first switching device 38 and the first return line 62 is open in the receptacle 60;
  • the atomizer valve 52 of the second switching device 50 closes in the downstream end section of the second path section 42;
  • the color pressure regulator 16 remains at the maximum pressure setting
  • a second coating material changer 210 for further different types of coating material and to connect it via a further first path section 240 and a further first switching device 238 to the same flow connection 36 at the beginning of the second path section 42, so that then either a color changer 10 and one of the first path section 40 or the other color changer 210 and its first path section 240 are connected to the second path section 42 and thus can use the latter alternately together.
  • the further first switchover device 238 can in turn be formed by a 3/2-way valve and can be connected to the collecting container 60 in terms of flow by a third return line 262. In this way, interruptions in operation are avoided even when a large number of different coating materials are used alternately and in between individual material strands or pressure containers containing coating material have to be exchanged or cleaned.
  • An advantage of the invention is that by dividing the flow path into the sections 40 and 42 or 240 and 42 it is possible to clean the atomizer device 2 in a short time with little solvent through the secondary flushing device 30, without cleaning the first path section 40. This is expedient if, when using the same coating material, cleaning only the atomizer device 2 is necessary, for example during breaks in operation. If so-called water lacquer is used as the coating material, it is also possible within the scope of the invention to provide a further flushing device 330 corresponding to the construction of the secondary flushing device 30, with which it is possible, if necessary, only the atomizing member 44 of the atomizing device 2 with solvent and / or air to clean.

Landscapes

  • Spray Control Apparatus (AREA)
  • Nozzles (AREA)

Abstract

Un dispositif de revêtement par pulvérisation permet d'appliquer automatiquement un enduit liquide, notamment sur des carrosseries de véhicules à moteur, au moyen d'un pulvérisateur (2) pour une pluralité d'enduits. Le dispositif contient une voie d'écoulement (14) des enduits qui s'étend entre un échangeur d'enduits (10) et le pulvérisateur (2). Lors d'un changement d'enduit, la voie d'écoulement (14) peut être rincée par un fluide. La voie d'écoulement (14) comprend un premier commutateur (38) qui permet de la subdiviser en au moins deux sections (40, 42) de rinçage qui peuvent être rincées séparément mais en même temps. La première section (40) s'étend de l'échangeur d'enduits (10) jusqu'au premier commutateur (38) et la deuxième section (42) s'étend du premier commutateur (38) jusqu'à l'organe pulvérisateur (44).
EP92910645A 1991-05-29 1992-05-22 Dispositif de revetement par pulverisation Revoked EP0541745B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4117613A DE4117613A1 (de) 1991-05-29 1991-05-29 Spruehbeschichtungsvorrichtung
DE4117613 1991-05-29
PCT/EP1992/001150 WO1992021447A1 (fr) 1991-05-29 1992-05-22 Dispositif de revetement par pulverisation

Publications (2)

Publication Number Publication Date
EP0541745A1 true EP0541745A1 (fr) 1993-05-19
EP0541745B1 EP0541745B1 (fr) 1995-10-11

Family

ID=6432729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92910645A Revoked EP0541745B1 (fr) 1991-05-29 1992-05-22 Dispositif de revetement par pulverisation

Country Status (5)

Country Link
EP (1) EP0541745B1 (fr)
AU (1) AU1763992A (fr)
DE (2) DE4117613A1 (fr)
MX (1) MX9202533A (fr)
WO (1) WO1992021447A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4315223A1 (de) * 1993-05-07 1994-11-10 Abb Patent Gmbh Verfahren und Vorrichtung zur Potentialtrennung
DE4342128A1 (de) * 1993-12-10 1995-06-14 Abb Patent Gmbh Farbauftragvorrichtung
DE4423643A1 (de) * 1994-07-06 1996-01-11 Ind Lackieranlagen Schmidt Gmb Einrichtung zum Lackieren von Gegenständen mit verschiedenen Farben
EP0886546A1 (fr) * 1995-12-29 1998-12-30 Ingenieurbüro Inovac Procede et dispositif pour recouvrir des objets avec des types de produits de recouvrement qui changent souvent
DE19610589A1 (de) * 1996-03-18 1997-09-25 Duerr Gmbh & Co Verfahren und System zur Farbversorgung einer Beschichtungsanlage
SE508510C2 (sv) * 1997-02-24 1998-10-12 Abb Flexible Automation As Anläggning och förfarande för automatisk sprutlackering
DE19819339A1 (de) * 1998-04-30 1999-12-09 Lactec Gmbh Verfahren und Vorrichtung zum Prüfen der Dichtigkeit der Ventile an Farbwechslern zur seriellen Verarbeitung verschiedenartiger Lacke
DE10129667A1 (de) * 2001-06-20 2003-01-02 Abb Patent Gmbh Reinigungsvorrichtung für Luftkappen an Lackierpistolen

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US367425A (en) * 1887-08-02 Covering for meats
US3450092A (en) * 1965-07-08 1969-06-17 Vilbiss Co The De Color change apparatus
US3717929A (en) * 1970-06-03 1973-02-27 Du Pont Method of making alkali metal-filled electrical conductors and terminations therefor
US4159806A (en) * 1977-09-12 1979-07-03 Ransburg Corporation Operation sequence control system
JPS6051867B2 (ja) * 1980-08-04 1985-11-15 日本ランズバ−グ株式会社 塗料色替え方法
US4375865A (en) * 1980-08-12 1983-03-08 Binks Manufacturing Company Color change system for spray coating apparatus
US4487367A (en) * 1982-10-14 1984-12-11 General Motors Corporation Paint color change and flow control system
DE3312268A1 (de) * 1983-04-05 1984-10-11 Hermann Behr & Sohn Gmbh & Co, 7121 Ingersheim Farbumlaufanlage fuer eine lackieranlage
US4728034A (en) * 1986-02-06 1988-03-01 Trinity Industrial Corporation Cleaning device upon color-change in an electrostatic mutli-color coating apparatus
FR2616086B2 (fr) * 1987-05-19 1990-01-26 Sames Sa Installation de projection de produit de revetement, a pompe
DE3725172A1 (de) * 1987-05-27 1989-02-09 Behr Industrieanlagen Verfahren und anlage zum elektrostatischen beschichten mit leitfaehigem material
EP0303541B1 (fr) * 1987-08-14 1991-10-09 Sames S.A. Installation de projection de produit de revêtement tel que par exemple une peinture hydrosoluble
US4792092A (en) * 1987-11-18 1988-12-20 The Devilbiss Company Paint color change system
DE3817997A1 (de) * 1988-05-27 1989-12-07 Babcock Werke Ag Vorrichtung zum reinigen einer leitung
US4932589A (en) * 1988-09-30 1990-06-12 Binks Manufacturing Company Method of and apparatus for electrical isolation of electrostatic sprayers
DE3927880C2 (de) * 1989-08-23 1998-07-30 Behr Industrieanlagen Verfahren und Anlage zum Beschichten von Gegenständen mit häufig wechselndem Farbmaterial
DE9106610U1 (de) * 1991-05-29 1991-10-02 Ransburg Gmbh, 6056 Heusenstamm Sprühbeschichtungsvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9221447A1 *

Also Published As

Publication number Publication date
MX9202533A (es) 1993-12-01
DE59203985D1 (de) 1995-11-16
EP0541745B1 (fr) 1995-10-11
WO1992021447A1 (fr) 1992-12-10
DE4117613A1 (de) 1992-12-03
AU1763992A (en) 1993-01-08

Similar Documents

Publication Publication Date Title
DE69622407T2 (de) Lackierroboter mit system zum lackzufuhr
DE10140216B4 (de) Verfahren und Vorrichtung an einer Lackiereinrichtung zum Reinigen einer Lack-Förderleitung
DE3130096C2 (fr)
DE19742588B4 (de) Verfahren zum serienweisen Beschichten von Werkstücken
EP1142649B1 (fr) Procédé et appareil de revêtement
DE19728155A1 (de) Verfahren und Vorrichtung zum Lackieren
DE3932623A1 (de) Anordnung zum zufuehren ausgewaehlter elektrisch leitender beschichtungsmaterialien zu einer mit hochspannung arbeitenden elektrostatischen beschichtungsvorrichtung und entsprechendes zufuehrungsverfahren
EP1172152A1 (fr) Système d'alimentation en peinture avec conduits raclables pour un appareil de revêtement électrostatique
DE1577696A1 (de) Regelung fuer eine Spruehvorrichtung
DE1009071B (de) Pistole zum Aufspritzen von mindestens zwei Spritzstoffen mit einem zusaetzlichen, auswechselbaren Spritzstoffbehaelter
EP1344572B1 (fr) Installation de peinture pour revêtir des objets par un revêtement liquide
DE2646719C3 (de) Spritzpistole
DE60127273T2 (de) Verfahren und vorrichtung zur befüllung eines farbbehälters in einer automatisch arbeitenden beschichtunganlage
EP0541745A1 (fr) Dispositif de revetement par pulverisation.
EP0888825B1 (fr) Appareil de peinture
DE3717929A1 (de) Verfahren und anlage zum elektrostatischen beschichten mit leitfaehigem material
DE10131562A1 (de) Verfahren und System zur Versorgung einer Beschichtungsvorrichtung
EP1369183B1 (fr) Méthode et système d'alimentation de peinture pour une installation de revêtement électrostatique
DE102016014948A1 (de) Druckkopf und zugehöriges Betriebsverfahren
DE9106610U1 (de) Sprühbeschichtungsvorrichtung
EP0104395B1 (fr) Procédé de mélange de peintures et appareil pour la mise en oeuvre d'un tel procédé
DE3312268C2 (fr)
DE4133840C2 (de) Anlage zum Beschichten von Gegenständen mit häufig wechselndem Farbmaterial
WO2024165408A1 (fr) Dispositif d'alimentation en agent de revêtement et procédé de fonctionnement associé
DE19817377A1 (de) Verfahren und Vorrichtung zum Zuführen von Lack zu mindestens zwei Zerstäubern

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

17P Request for examination filed

Effective date: 19921214

AK Designated contracting states

Kind code of ref document: A1

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

17Q First examination report despatched

Effective date: 19941011

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

Owner name: ABB FLEXIBLE AUTOMATION GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Owner name: ABB FLEXIBLE AUTOMATION GMBH

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE ES FR GB IT 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 PRESCRIBED TIME-LIMIT;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.

Effective date: 19951011

Ref country code: GB

Effective date: 19951011

Ref country code: FR

Effective date: 19951011

Ref country code: BE

Effective date: 19951011

REF Corresponds to:

Ref document number: 59203985

Country of ref document: DE

Date of ref document: 19951116

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

Ref country code: SE

Effective date: 19960111

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19960112

EN Fr: translation not filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19951011

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: DUERR GMBH

Effective date: 19960710

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

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

Ref country code: DE

Effective date: 19970201

RDAH Patent revoked

Free format text: ORIGINAL CODE: EPIDOS REVO

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19970324