EP0347607B1 - Procédé et dispositif pour amener un produit à pulvériser à une pluralité de postes de pulvérisation - Google Patents

Procédé et dispositif pour amener un produit à pulvériser à une pluralité de postes de pulvérisation Download PDF

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Publication number
EP0347607B1
EP0347607B1 EP89109443A EP89109443A EP0347607B1 EP 0347607 B1 EP0347607 B1 EP 0347607B1 EP 89109443 A EP89109443 A EP 89109443A EP 89109443 A EP89109443 A EP 89109443A EP 0347607 B1 EP0347607 B1 EP 0347607B1
Authority
EP
European Patent Office
Prior art keywords
pressure
spraying
spray
ring
ring conduit
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
EP89109443A
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German (de)
English (en)
Other versions
EP0347607A3 (en
EP0347607A2 (fr
Inventor
Miroslav Luckarz
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.)
Mahle Behr Industry GmbH and Co KG
Original Assignee
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 Behr Industrieanlagen GmbH and Co KG filed Critical Behr Industrieanlagen GmbH and Co KG
Publication of EP0347607A2 publication Critical patent/EP0347607A2/fr
Publication of EP0347607A3 publication Critical patent/EP0347607A3/de
Application granted granted Critical
Publication of EP0347607B1 publication Critical patent/EP0347607B1/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
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B05B12/04—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for sequential operation or multiple outlets
    • 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
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/58—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0406—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with several pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0423—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material for supplying liquid or other fluent material to several spraying apparatus

Definitions

  • the invention relates to a method for supplying spray material, namely paints and varnishes, to a plurality of spray stands by means of a common spray material ring line according to the preamble of patent claim 1 (GB-A-2 091 911). Furthermore, the invention relates to a device according to the preamble of claim 4 for performing this method.
  • the object of the invention is therefore to provide a method and a device with the aid of which it is possible on the one hand to meet the requirements of the spraying operation, but on the other hand to protect the spray material flowing in the ring line as much as possible, that is to say long-term loads as much as possible avoid.
  • This object is achieved in terms of the method from the characterizing features of patent claim 1, and in terms of furnishings, from the characterizing features of patent claim 4.
  • continuous monitoring is carried out and measurement of pressure, speed, volume flow and / or mass flow of the spray material flowing in the ring line, these variables being subjected to continuous adaptation to an optimal low value, on the basis of the properties of the respective spray material, the spray material temperature and the respective one Operating status of the facility.
  • the device has a paint reservoir 8 and a feed pump 9, in practice the reservoir 8 and pump 9 are located in a separate room, which is usually called a paint mixing room.
  • a ring line designated as a whole 10 leads off and leads back to the reservoir 8.
  • the ring line 10 consists of a flow line 10a and a return line 10b, the flow line 10a opening into a pressure reducer 11, from which the return line 10b then branches off.
  • sensors 16 are used in the line system, only the sensors 16 being shown in the area of the spray station A in the drawing for the sake of clarity; further sensors 16 are located at comparable points in the area of the spraying stations B, C and D.
  • the sensors 16 record values of the paint flowing in the lines to be explained later and pass these values on to a computer 17. Also for reasons of clarity, only the connecting line of a sensor 16 to the input of the computer 17 is shown in the drawing.
  • the output of a conventional input device is located at the input of the computer 17.
  • the output of the computer 17 leads via a control line to the feed pump 9.
  • further components of the device or all components can be controlled by the computer 17, the computer 17 then controlling on the basis of the measured values of the sensors 16, an input program and / or the input device 18.
  • the known values of the respective lacquer for example its viscosity at a certain temperature, its shear resistance and the like, are first entered into the computer 17 by means of the input device 18. entered.
  • the computer 17 controls the feed pump 9 in such a way that the variables mentioned , ie pressure, speed, volume flow and / or mass flow, are at an optimum value, regardless of whether the spray booths are switched off or whether all or part of the spray booths are switched on or in operation.
  • the optimal value is to be understood as follows.
  • the impairment of the lacquer depends on the type and properties of the respective lacquer, also on its respective viscosity, the viscosity changing with the temperature, and in some lacquers even non-linear (rheological lacquer structure).
  • the sizes mentioned cannot be reduced arbitrarily;
  • certain pressures, speeds and / or quantities of paint are required and during the idle states of the spray booths, it must be ensured that there is no sudden drop in the piping system when the spraying operation starts (opening the nozzle valves and / or starting the spraying process) the required spray pressure and the required spray quantity are therefore immediately available.
  • the flow velocities are too low, there is a risk of deposits on the inner tube walls, in particular in the case of paints which contain solid particles in suspension, for example metal paints.
  • the feed pump 9 is now controlled via the computer in such a way that the paint is treated as gently in all operating states as is possible due to its special properties and the requirements for the device to function properly.
  • FIG. 2 shows a measurement protocol of the practice for a device according to FIG. 1, the numerical values given serving only for a better understanding of the invention.
  • the spraying stands A and B of FIG. 1 are out of operation, ie the nozzle valves 12 A and 12 B are closed.
  • the nozzle valves 12 C and 12 D are open so that a paint flow takes place, but the spraying devices 14C and 14D are not in operation.
  • the individual numerical values at the different Parts of the facility are self-explanatory and do not require any special explanation.
  • the pressure on the outlet side of the pressure reducers 15C and 15d essentially corresponds to the pressure on the outlet side of the pressure reducer 11, which means that the pressure of the paint return of the spray booths C and D is adjusted in such a way that the inlet into the return line is as calm as possible 10b is guaranteed.
  • ring line 10 In the exemplary embodiment explained with the aid of the figures, only one ring line 10 is shown for the sake of simplicity. In practice, however, several parallel ring lines will generally be provided, for example five ring lines for varnishes of different colors and one ring line for rinsing liquid.
  • the dispensing valves on the individual spray stands are then integrated into a so-called color change unit, which can be controlled in such a way that the - common - metering unit 13 and thus the spray device 14 are supplied with the paint of the desired color or the rinsing liquid.
  • the pressure reducers 15 at the outlet of the spraying devices are controlled in accordance with the color change units, so that the outflowing paint reaches the "correct" return line 10b again.
  • the monitoring and adjustment of the various ring lines must be carried out separately, because, as mentioned, the properties of the coatings are different, even if the basic type is the same.
  • the dimensioning of the device depends on the particular circumstances, but care should be taken to ensure that the ring lines, both the flow and the return, pass as close as possible to the spraying booths, so that the line sections between the tap flow line and the junction in to keep the return as short as possible.
  • the illustrated embodiment can have numerous modifications experienced without leaving the scope of the invention. This applies in particular to the components of the facility. For example, if the accuracy of the spray pressure is not important, the metering units 13 can be omitted. It is also possible to provide only stub lines from the flow of the ring line to the spraying devices, that is to say not to connect the spraying devices to the return of the ring line, in particular if the paints to be used do not tend to settle. Such a device is shown in FIG. 3, in which the same components with the components of FIG. 1 are provided with the same reference numerals. 3, only stub lines lead from the ring line 10 to the spraying devices 14, it then also being possible to dispense with the subdivision of the ring line 10 by means of a pressure reducer 11 (FIG. 1) in the forward and return flow.
  • a pressure reducer 11 FIG. 1
  • the computer can be connected to a higher-level data processing system, with the result of further automation of the switching and adaptation processes mentioned.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Spray Control Apparatus (AREA)

Claims (8)

  1. Procédé d'alimentation de plusieurs postes de pulvérisation en produit à pulvériser, à savoir en peintures et vernis, au moyen d'un conduit annulaire commun de produit à pulvériser qui part d'un réservoir équipé d'une pompe de refoulement, passe par les postes de pulvérisation et revient au réservoir, une prise qui se trouve à proximité de chaque poste de pulvérisation sur le conduit annulaire se composant d'une soupape commandée de prise et d'un conduit de raccord du produit à pulvériser à l'appareil de pulvérisation du poste de pulvérisation, la pression du produit à pulvériser étant mesurée et la capacité de la pompe étant réglée en fonction de cette pression, caractérisé en ce qu'en plus de la pression, la vitesse, le flux volumique et/ou le flux massique du produit à pulvériser circulant dans le conduit annulaire sont aussi contrôlés en permanence et adaptés à l'aide de la pompe de refoulement aux exigences particulières de manière que la pression, la vitesse, le flux volumique et/ou le flux massique du produit à pulvériser puissent être maintenus à une valeur faible optimale sur la base des caractéristiques du produit à pulvériser, y compris de la structure réhologique du produit à pulvériser, de la température du produit à pulvériser, de l'état d'ouverture ou de fermeture des soupapes de prise et des appareils de pulvérisation ainsi que de la consommation en produit à pulvériser de l'appareil de pulvérisation et de manière qu'au moment auquel la pulvérisation débute, la pression nécessaire de pulvérisation et le débit nécessaire de pulvérisation soient disponibles.
  2. Procédé selon la revendication 1 pour conduits annulaires dont les prises comprennent une pompe doseuse montée en aval de la soupape de prise, caractérisé en ce que la vitesse, le flux volumique et/ou le flux massique du produit à pulvériser circulant dans le conduit annulaire sont contrôlés et adaptés.
  3. Procédé selon la revendication 1 ou 2, caractérisé par l'application à des dispositifs comprenant plusieurs conduits annulaires parallèles destinés à des couleurs différentes, le contrôle et l'adaptation ayant lieu individuellement pour chaque conduit annulaire.
  4. Dispositif pour la mise en oeuvre du procédé selon la revendication 3, comprenant plusieurs conduits annulaires (10) d'alimentation des postes de pulvérisation en peintures différentes et en liquides de nettoyage, et comprenant des groupes (12) d'échange de peinture associés à chaque poste de pulvérisation et se composant de plusieurs soupapes de prise et comprenant par ailleurs une pompe de refoulement (9) associé à chaque conduit annulaire, caractérisé par des détecteurs (16) de pression, de vitesse et/ou de débit installés en des emplacements prescrits dans le conduit annulaire (10) et destinés à générer des signaux électriques de sortie, ainsi que par une calculatrice (17) à l'entrée de laquelle les sorties des détecteurs (16) ainsi qu'un dispositif d'entrée (18) sont connectés et de la sortie de laquelle des conducteurs de commande vont vers les pompes de refoulement (9) et des conducteurs d'enclenchement vont vers les groupes (12) d'échange de couleur ainsi que vers des organes réglants (11, 13, 15) des débits des peintures qui sont montés en aval des groupes d'échange de peinture.
  5. Dispositif selon la revendication 4, caractérisé en ce que le conduit annulaire (10) est subdivisé par un organe réglant ayant la forme d'un réducteur de pression (11) en une canalisation d'aller (10a) et une canalisation de retour (10b), en ce que les groupes (12) d'échange de peinture sont branchés sur le conduit d'aller (10a) et en ce que des conduits d'évacuation vers la canalisation de retour (10b) du conduit annulaire (10) partent des appareils de pulvérisation (14) des postes de pulvérisation.
  6. Dispositif selon la revendication 5, caractérisé en ce qu'un réducteur de pression (15) est installé dans le conduit d'évacuation de chacun des appareils de pulvérisation, ces réducteurs de pression (15) et le réducteur de pression (11) du conduit annulaire (10) étant commandés par la calculatrice (17).
  7. Dispositif selon la revendication 4, caractérisé en ce que les organes réglants sont formés de pompes doseuses (13).
  8. Dispositif selon l'une des revendications 4 à 7, caractérisé en ce que le conduit annulaire (10) a une section constante identique et il est d'une construction modulaire.
EP89109443A 1988-06-24 1989-05-24 Procédé et dispositif pour amener un produit à pulvériser à une pluralité de postes de pulvérisation Expired - Lifetime EP0347607B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821440A DE3821440A1 (de) 1988-06-24 1988-06-24 Verfahren und einrichtung zum zufuehren von spritzgut zu einer mehrzahl von spritzstaenden
DE3821440 1988-06-24

Publications (3)

Publication Number Publication Date
EP0347607A2 EP0347607A2 (fr) 1989-12-27
EP0347607A3 EP0347607A3 (en) 1990-09-26
EP0347607B1 true EP0347607B1 (fr) 1994-10-26

Family

ID=6357221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109443A Expired - Lifetime EP0347607B1 (fr) 1988-06-24 1989-05-24 Procédé et dispositif pour amener un produit à pulvériser à une pluralité de postes de pulvérisation

Country Status (4)

Country Link
US (1) US5096120A (fr)
EP (1) EP0347607B1 (fr)
DE (2) DE3821440A1 (fr)
ES (1) ES2061788T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9529370B2 (en) 2005-09-13 2016-12-27 Finishing Brands Uk Limited Back pressure regulator
EP1789202B2 (fr) † 2005-09-13 2017-03-08 Finishing Brands Holdings Inc. Systeme et procede de circulation de peinture

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DE4017293C1 (en) * 1990-05-30 1991-08-29 Hoesch Stahl Ag, 4600 Dortmund, De High pressure fluid cleaning method - involves using equation with deviation detected to selectively halt operation
US5433587A (en) * 1993-07-19 1995-07-18 Graco Inc. Paint circulating method with viscosity indicator and paint agitating means
US5316217A (en) * 1993-08-23 1994-05-31 Fanuc Robotics North America, Inc. Method and system for detecting blockage in a spray gun of a liquid spray system
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DE19543548C2 (de) * 1995-11-22 1999-09-02 Fraunhofer Ges Forschung System und Verfahren zur Bereitstellung und Wechsel der Materialien zum Spritzlackieren
US6154355A (en) * 1998-11-10 2000-11-28 Illinois Tool Works Inc. Apparatus and method for independently controlling multiple material applicators
US6168824B1 (en) 1999-11-22 2001-01-02 Daimlerchrysler Corporation Paint viscosity measuring system
GB0329585D0 (en) * 2003-12-20 2004-01-28 Itw Ltd Pumps
DE102004034270B4 (de) * 2004-07-15 2016-08-18 Wolfgang Schmidt Anlage zum Austragen fließfähiger Fluide, insbesondere von Farben und Lacken und Verfahren zum Betrieb der Anlage
US20060177565A1 (en) * 2005-02-07 2006-08-10 Shubho Bhattacharya Paint circulation system
DE102006002389A1 (de) * 2006-01-17 2007-07-19 SCHÜTZE, Thomas System zur Zuführung mehrere Farbkomponenten für mindestens eine Lackierstation, insbesondere für Kraftfahrzeugkarosserien
ES2556171T3 (es) 2006-05-12 2016-01-13 Dürr Systems GmbH Instalación de revestimiento y procedimiento de funcionamiento correspondiente
US8235674B1 (en) 2009-03-31 2012-08-07 Honda Motor Co., Ltd. Paint circulation pump control system
DE102010047448A1 (de) * 2010-10-04 2012-04-05 Dürr Systems GmbH Bedarfsgerechtes Steuerverfahren für eine Beschichtungsmittelpumpe und entsprechende Pumpensteuerung
CN102581277B (zh) * 2012-02-21 2014-04-02 江苏豪然喷射成形合金有限公司 喷射成形生产的雾化气体供给系统
GB201804085D0 (en) * 2018-03-14 2018-04-25 Carlisle Fluid Tech Uk Ltd Paint flow balancing
DE102018109344A1 (de) * 2018-04-19 2019-10-24 Dürr Systems Ag Versorgungssystem zur Versorgung mehrerer Abnehmer mit einem Applikationsmittel
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DE102023134464A1 (de) * 2023-12-08 2025-06-12 Dürr Systems Ag Beschichtungsmittelversorgung und zugehöriges Betriebsverfahren

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9529370B2 (en) 2005-09-13 2016-12-27 Finishing Brands Uk Limited Back pressure regulator
EP1789202B2 (fr) † 2005-09-13 2017-03-08 Finishing Brands Holdings Inc. Systeme et procede de circulation de peinture

Also Published As

Publication number Publication date
EP0347607A3 (en) 1990-09-26
US5096120A (en) 1992-03-17
DE3821440A1 (de) 1989-12-28
ES2061788T3 (es) 1994-12-16
DE58908554D1 (de) 1994-12-01
EP0347607A2 (fr) 1989-12-27

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