EP0104395A2 - Procédé de mélange de peintures et appareil pour la mise en oeuvre d'un tel procédé - Google Patents

Procédé de mélange de peintures et appareil pour la mise en oeuvre d'un tel procédé Download PDF

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Publication number
EP0104395A2
EP0104395A2 EP83108024A EP83108024A EP0104395A2 EP 0104395 A2 EP0104395 A2 EP 0104395A2 EP 83108024 A EP83108024 A EP 83108024A EP 83108024 A EP83108024 A EP 83108024A EP 0104395 A2 EP0104395 A2 EP 0104395A2
Authority
EP
European Patent Office
Prior art keywords
valve
color
paint
components
chamber
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
EP83108024A
Other languages
German (de)
English (en)
Other versions
EP0104395B1 (fr
EP0104395A3 (en
Inventor
Hans Behr
Kurt Dipl.-Ing. Vetter
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
Hermann Behr and Sohn GmbH and Co
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=6171953&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0104395(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Behr Industrieanlagen GmbH and Co KG, Hermann Behr and Sohn GmbH and Co filed Critical Behr Industrieanlagen GmbH and Co KG
Publication of EP0104395A2 publication Critical patent/EP0104395A2/fr
Publication of EP0104395A3 publication Critical patent/EP0104395A3/de
Application granted granted Critical
Publication of EP0104395B1 publication Critical patent/EP0104395B1/fr
Expired 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
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • 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
    • 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
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • 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

Definitions

  • the invention relates to a method for mixing several electrostatic components of a paint liquid and / or atomizing the same, in which the components are mixed in the state of the art at variable distances from the atomization site and supplied to the latter as a mixture, and a paint mixing device with at least one color source; with several valve devices for the components of the color liquid; with channels each extending between a source and a valve device; with a spray device which is connected to at least one of the valve devices via a feed path; and with a control device for selectively actuating the valve devices; to perform the procedure.
  • the invention is based on the object, when / mixing several, in particular, components of a coloring liquid to ensure that, when changing colors, as little as possible unusable coloring liquid has to be removed.
  • This object is achieved according to the invention in a method of the type mentioned at the outset and starting from a device of the type mentioned at the outset known from DE-AS 20 43 789 in that the components are guided separately into the vicinity of the atomization site and then mixed as long as they are are transported over the remaining distance to the atomization site; respectively. in that the length of the feed path is small compared to the length of each channel; that the feed path is mainly formed by means of a static mixer of several components of a color liquid; and that each valve device has a check valve which opens into a chamber to which the static mixer is connected.
  • a cleaning agent for removing paint deposits is used in the next Guided near the atomization site and then returned by another route and / or transported the rest of the way to the atomization site.
  • a preferred embodiment of the device according to the invention with a cleaning agent source is distinguished; with an additional valve device for the detergent; with a channel that extends between the detergent source and the additional valve device, characterized in that the additional valve device has a shut-off valve opening into the chamber and that another, via a channel with a Valve device connected detergent sink is provided with a check valve which is connected by a line to a prechamber of the check valve for the main component of the color liquid.
  • valve devices can be actuated pneumatically and are arranged in a common housing provided with compressed air connections, with the valve devices for the components of the paint being assigned a common compressed air connection, so that the device can be easily installed and its remote control can be conveniently operated.
  • the chamber is annular and the valves are distributed around its circumference. This results not only in a concentrated arrangement of the valve devices in a compact housing, but also in a fluidically favorable design of the flow path from the valve to the mixer.
  • valve assigned to the base paint opens into the chamber opposite the inlet of the static mixer, so that the main component passes through the chamber into the mixer without detour through its delivery channel .
  • the embodiment consists — in FIG. 1 from right to left — mainly of a spray device 10, a static mixer 12 and a structural unit 14 which is connected to the spray device in a fluid-conducting manner via the mixer.
  • the assembly 14 has a housing 16, on the rear end, which can be seen in Fig. 2, four hose connections 18 for the pulsed supply of compressed air and a hose connection 20 for the supply of base paint, a hose connection 22 for the supply of hardener , A hose connection 24 for the supply of thinner as a cleaning agent and a hose connection 26 for recycling are attached.
  • Each hose connection 18 is in air-conducting connection with a cylinder 28 of a valve device formed by the housing 16.
  • a spring-loaded piston 30 of the valve device slides in the cylinder 28, the rod of which forms a valve needle 32, the tip 34 of which cooperates with the conical seat 36 of a valve of the valve device which is introduced into the housing 16.
  • Each of the hose connections 20, 22, 24 and 26, where ti is the Ven ls pit zen 3420. 3422, 3424 respectively. 34 26 are assigned, is in liquid-conducting connection with a channel section 38 formed in the housing 16, the part of which can be seen in FIG. 1 parallel to the valve needle 32 rend that part of the duct section connecting this part with an annular space 40 located behind the valve seat 36 around the valve needle cannot be seen there.
  • the hose connection for a certain fluid and one of the two adjacent hose connections 18 for compressed air are assigned to each other in pairs.
  • a semicircular chamber 42 is formed in the housing 16, into which three of the four valve seats 36 open out, evenly distributed over the chamber circumference, namely those which are assigned to the hose connections 20, 22 and 24, respectively, while the fourth valve seat 36 assigned to the hose connection 26 in one end of an approximately eight-circle-shaped chamber 43 opens into the housing 16, the other end of which is connected via a branch duct 45 to the annular space 40 for the base lacquer.
  • the two chambers 42 and 43 are coplanar.
  • the chamber 42 is provided with a colinear housing bore 44, at the end of which is remote from the valve seat, the static mixer 12 is placed colinearly.
  • the mixer 12 works without moving parts, in that the fluids to be mixed, namely the base lacquer and the hardener, are pressed through a labyrinth or between baffles, where they mix intimately.
  • a nozzle 46 of the spraying device 10 is attached to the end of the static mixer 12 facing away from the structural unit 14 and has an atomizer bell 48 with a deflection part 50.
  • the mixture of base lacquer and hardener emerging from the nozzle 46 that is to say the ready-to-apply 2-component lacquer, reaches the bell edge via both broad sides of the deflection part 50 rotating with the bell 48 about the axis of the mixer 12 and is converted there into a paint mist.
  • the bell rim is provided with grooves, not shown, which intersect in pairs, which form paint streams and mix at the intersection points.
  • a color change is carried out in three steps: First, the valves 34, 36 for master varnish, hardener and thinner are kept closed, while the valve for recirculation is open, so that instead of the master varnish used thinner for the first rinsing, possibly interrupted by pulsed air, if necessary in portions reaches the hose connection 26 via the hose connection 20 through the branch duct 45 and the chamber 43, the base lacquer contained in these cavities and the hoses being pressed out and collected at the end of the return hose.
  • valve is open tammlack for the S, so that optionally pulsed thinner after a short way through the chamber 42 as reached during the intermediate rinse by the mixer 12 for Absprühvorraum 10 where it is collected together with the squeezed out liquid.
  • valves 34, 36 for thinner and return are kept closed, while the valves for base coat and hardener are opened until the desired paint liquid as a mixture of base coat and hardener has reached the spray device 10 through the chamber 42 and the mixer 12, pending there.
  • valves 34, 36 need to be opened for the base coat and hardener, regardless of whether a color change has taken place beforehand or not.

Landscapes

  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP83108024A 1982-08-28 1983-08-13 Procédé de mélange de peintures et appareil pour la mise en oeuvre d'un tel procédé Expired EP0104395B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823232088 DE3232088A1 (de) 1982-08-28 1982-08-28 Farbmischverfahren und farbmischeinrichtung zur verfahrensdurchfuehrung
DE3232088 1982-08-28

Publications (3)

Publication Number Publication Date
EP0104395A2 true EP0104395A2 (fr) 1984-04-04
EP0104395A3 EP0104395A3 (en) 1985-05-22
EP0104395B1 EP0104395B1 (fr) 1987-07-29

Family

ID=6171953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108024A Expired EP0104395B1 (fr) 1982-08-28 1983-08-13 Procédé de mélange de peintures et appareil pour la mise en oeuvre d'un tel procédé

Country Status (3)

Country Link
EP (1) EP0104395B1 (fr)
DE (2) DE3232088A1 (fr)
ES (2) ES8407407A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201683A1 (fr) * 1985-05-13 1986-11-20 Jean Egli Mélangeur de couleur réglable
EP1473088A1 (fr) * 2003-05-01 2004-11-03 E. I. du Pont de Nemours and Company Procède de revêtement avec substances liquide pour dispositif de revêtement de type tête de pulvérisation rotative à grande vitesse de rotation
US6929823B2 (en) 2003-05-01 2005-08-16 E. I. Du Pont De Nemours And Company Process for the high-speed rotary application of liquid, pigmented coating agents
WO2011138028A1 (fr) * 2010-05-07 2011-11-10 Dürr Systems GmbH Pulvérisateur avec un mélangeur à treillis

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19536748A1 (de) * 1995-10-02 1997-05-15 Wagner Int Hochdruckspritzpistole für Zweikomponenten-Materialien
JPH105635A (ja) * 1996-04-25 1998-01-13 Kao Corp 静電粉体塗装方法および静電粉体塗装装置
US6202945B1 (en) 1997-04-22 2001-03-20 Kao Corporation Method and apparatus for electrostatic powder coating
DE19826977B4 (de) * 1998-06-18 2008-07-17 Desoi Gmbh Spritzdüsenkopf

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE561209A (fr) * 1956-09-29
DE1177045B (de) * 1961-03-24 1964-08-27 Schilde Maschb Ag Rotierender Zweikomponentenspruehkopf fuer elektrostatische Lackiervorrichtungen
US3201048A (en) * 1963-04-19 1965-08-17 Gen Motors Corp Multiple fluid spray gun with remotely operable selective valve control
US3485453A (en) * 1968-02-05 1969-12-23 Vilbiss Co The De Dual component spray gun
BE755696A (fr) * 1969-09-03 1971-03-03 Carrier Engineering Co Ltd Appareil destine a commande le fonctionnement d'un pistolet de pulverisation
US3870233A (en) * 1973-09-12 1975-03-11 Nordson Corp Color change of electrostatic spray apparatus
US3924806A (en) * 1974-11-20 1975-12-09 Ford Motor Co Mixing manifold for air atomizing spray apparatus
DE2650405A1 (de) * 1976-11-03 1978-05-18 Reinhardt Gmbh & Co Technik Zweikomponenten-dosiereinrichtung
DE2747707C2 (de) * 1977-10-25 1982-10-21 Daimler-Benz Ag, 7000 Stuttgart Anlage zum Farbspritzen von Serienteilen wechselnder Farbe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201683A1 (fr) * 1985-05-13 1986-11-20 Jean Egli Mélangeur de couleur réglable
EP1473088A1 (fr) * 2003-05-01 2004-11-03 E. I. du Pont de Nemours and Company Procède de revêtement avec substances liquide pour dispositif de revêtement de type tête de pulvérisation rotative à grande vitesse de rotation
US6929823B2 (en) 2003-05-01 2005-08-16 E. I. Du Pont De Nemours And Company Process for the high-speed rotary application of liquid, pigmented coating agents
WO2011138028A1 (fr) * 2010-05-07 2011-11-10 Dürr Systems GmbH Pulvérisateur avec un mélangeur à treillis
US20150122915A1 (en) * 2010-05-07 2015-05-07 Duerr Systems, Gmbh Atomizer with a lattice mixer
US9539594B2 (en) 2010-05-07 2017-01-10 Duerr Systems Gmbh Atomizer with a lattice mixer
EP2566628B1 (fr) 2010-05-07 2017-09-06 Dürr Systems AG Pulvérisateur avec un mélangeur à treillis

Also Published As

Publication number Publication date
EP0104395B1 (fr) 1987-07-29
ES525867A0 (es) 1984-06-01
ES525177A0 (es) 1984-10-01
DE3232088A1 (de) 1984-03-01
ES8407407A1 (es) 1984-10-01
ES8404879A1 (es) 1984-06-01
DE3372719D1 (en) 1987-09-03
EP0104395A3 (en) 1985-05-22

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