EP1095707A2 - Ensemble de valves de changement de couleur et procédé de rinçage d'un dispositif de changement de couleur - Google Patents

Ensemble de valves de changement de couleur et procédé de rinçage d'un dispositif de changement de couleur Download PDF

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Publication number
EP1095707A2
EP1095707A2 EP00123535A EP00123535A EP1095707A2 EP 1095707 A2 EP1095707 A2 EP 1095707A2 EP 00123535 A EP00123535 A EP 00123535A EP 00123535 A EP00123535 A EP 00123535A EP 1095707 A2 EP1095707 A2 EP 1095707A2
Authority
EP
European Patent Office
Prior art keywords
color
valve
channel
detergent
air
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
EP00123535A
Other languages
German (de)
English (en)
Other versions
EP1095707B1 (fr
EP1095707A3 (fr
Inventor
Thomas Appel
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 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 EP1095707A2 publication Critical patent/EP1095707A2/fr
Publication of EP1095707A3 publication Critical patent/EP1095707A3/fr
Application granted granted Critical
Publication of EP1095707B1 publication Critical patent/EP1095707B1/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
    • B05B12/149—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 characterised by colour change manifolds or valves therefor

Definitions

  • the invention relates to a color change valve arrangement with a Valve block according to the preamble of claim 1 and a method for flushing such a valve arrangement.
  • Color change valve blocks or in short color changers allow in Painting systems for the serial coating of workpieces such as Motor vehicles during the painting operation quick change from one color to another and pass mainly from a number of controllable color valves that are distributed along a color channel common to all colors.
  • a color pressure regulator can be arranged at the output of the color channel be, via which the color material, for example via a metering pump got to an atomizer.
  • Cleaning is usually done first opened a compressed air valve, which is located on the opposite end of the color channel, and through the compressed air the residual paint into a return duct and printed from there into a collection container.
  • the rinsing time can be done using a special dual-circuit technology reduce, in which in a circle of color changers and in other circle the path to the atomizer can be flushed, but increase the installation and control effort and the size of the color changer due to the required additional valves, and the amount of detergent remains relatively high.
  • a color change valve arrangement is known from DE 32 21 326 A1, at both the beginning of all colors common Color channel of the color change valve block as well as on one of these Valve block via a color pressure control valve downstream of the color distribution valve block Flush valves are arranged, which are optional Introduce compressed air, solvent or a mixture of both can. Furthermore, there is a modified version of this publication Embodiment known, in which the flushing media in the direction of color flow in the opposite direction through the color changer.
  • the invention has for its object a color change valve assembly and to provide a method of flushing them a reduction in rinsing time without significant additional effort and if possible also enable the consumption of detergent.
  • the invention has the particular advantage that compared to comparable known color changers for a significant reduction the rinsing time and also the amount of detergent required no additional valves are required.
  • a preferred use of the described here Color changers are color painting systems in which between the Color output of the color changer and a spray device such as for example one of the usual rotary or air atomizers or the like.
  • a spray device such as for example one of the usual rotary or air atomizers or the like.
  • a flushable metering pump or other metering device is arranged, the coating material over a Color pressure regulator is supplied, the color pressure regulator also itself can form the dosing device.
  • the invention is based on an embodiment shown in the drawing explained in more detail.
  • the color changer shown schematically in Fig. 1 can known structure as a valve block 1 with any string Modules to form a housing with a straight central color channel 2 and in each case in rows along the color channel valve bodies distributed on opposite sides if necessary to have.
  • the valve body contains 2 connected to the paint channel for example pneumatically controllable valves, of which a flushing agent valve V1 for the controlled introduction of at V as Detergent supplied thinner in the color changer, a pulse air valve PL1 for the controlled introduction of compressed air, various Color valves F1, F2, F3 and Fn for introducing coating material F of the selected color and a bleed valve RF2 are highlighted.
  • the remaining valve positions are of no importance for the explanation of the invention.
  • Color pressure regulator FDR arranged, of which a line 4 via a Dosing device, e.g. B. a metering pump 5 to an atomizer or other application organ Z leads with the usual Return valve RF1 is equipped.
  • the FDR color pressure regulator limits the outlet pressure to the pump.
  • the metering pump 5, for example a gear pump, is via a flushing valve V3 flushable with thinner V and provided with a bypass valve BY.
  • the pulse air valve is located according to FIG. 1 PL1 now at the output end of color channel 2, so that all Color valves F1 to Fn along the color channel 2 between the pulse air valve PL1 and the one at the opposite end of the color channel located detergent and vent valves V1 and RF2 are.
  • the flushing agent valve V1 is opened, so that thinner liquid from the input end of the paint channel to its exit and through it to a (not shown) Diverter valve before or on the application member Z flows.
  • the subsequent changing intervals of pulse air and thinner can for example be the same Time like the pulse air valve PL1 also the vent valve RF2 opened and thus fully exploited the dynamics of the pulse air become.
  • the vent valve RF2 can then again before the Pulse air valve PL1 should be closed as it is advisable if the entire pulse air is briefly through the output 3 of the Color changer is forced.
  • the color pressure regulator FDR can, however, also with the vent valve RF2 open one of the pressure conditions, i.e. the flow resistance of the Color pressure regulator FDR and the subsequent line system dependent part of the pulse air or the air-detergent mixture flow towards the application organ Z.
  • the entire air / detergent mixture flows when valve RF2 is closed to this exit, and when opening the vent valve RF2 reverses all or part of its flow direction around, which results in an additional cleaning effect. Since the flow resistance towards the valve RF2 is essential is lower than through the color pressure regulator FDR in the direction to the application organ, the valve is open when the RF2 valve is open to the input end of the valve block 1 flowing volume flow accordingly larger than the negligible residual flow through output 3. But it is also possible to use the color pressure regulator Close FDR when opening valve RF2.
  • the rinsing process required at short notice the direction of flow of a flushing medium can be reversed in whole or in part.
  • the reversal does not require the closing of a shut-off device or in the considered example of output 3, but can by opening an additional outlet, here that of the vent valve RF2 and the changing pressure conditions can be achieved.
  • the reversal of the flow direction leaves in principle also with the embodiment described here different arrangements of air and thinner valves to reach.
  • the flushing time is considerable due to the invention reduced (from 9.2 s to 5.8 s).
  • the required Reduced amount of detergent in the example examined from 283 g to 168 g, of which 265 g in the first case and in the second Fall 140 g on the return through the return valve RF1 on Application organ Z omitted).
  • rinse programs are also conceivable in which the detergent at certain times during the cleaning process the bleeder valve of the color changer is led out.
  • Fig. 2 The comparison shown in Fig. 2 was made without using the usual so-called EDPS flushing system, in which the flushing medium at a higher pressure than with standard flushing an injector is directed into the color changer and in interaction with the pulsed air an aerosol is created, with which especially is rinsed intensively and in a way that saves dishwashing medium
  • EDPS flush but can also be useful in the case described here Color changers can be applied.
  • the A certain amount of detergent per unit of time flow through the size of the opening and the pressure of the feed Detergent can be set. Through the exit of the detergent through the nozzle opening is also atomized of the detergent is reached, which reduces the cleaning effect is improved.
  • the solvent can through the upstream, as a shut-off valve serving valve V1 are clocked or flow continuously.
  • the color channel 2 can be selected from those explained in EP 0 979 964 A2 For the reasons described there, from the previously usual circular shape deviating elongated, e.g. B. approximately oval cross-section have, as shown in Fig. 4 at Q. In a further embodiment it is advantageous if the jet shape comes out of the nozzle D escaping detergent of the oval cross-sectional shape of the paint channel is adjusted. So it is a conical one Flat jet ST with a color channel cross-section Opening angle ⁇ and the length a and width b of the channel cross section Q corresponding dimensions.
  • the arrangement and / or shape of the nozzle D described can also in the case of arrangements of the solvent and Pulse air valves can be advantageous, even with conventional color changers with the arrangement of these two valves at the same end of the Color channel.

Landscapes

  • Spray Control Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Nozzles (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Multiple-Way Valves (AREA)
EP00123535A 1999-10-29 2000-10-27 Ensemble de valves de changement de couleur et procédé de rinçage d'un dispositif de changement de couleur Expired - Lifetime EP1095707B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19951956 1999-10-29
DE19951956A DE19951956A1 (de) 1999-10-29 1999-10-29 Ventilanordnung und Verfahren zum Spülen eines Farbwechslers

Publications (3)

Publication Number Publication Date
EP1095707A2 true EP1095707A2 (fr) 2001-05-02
EP1095707A3 EP1095707A3 (fr) 2003-06-04
EP1095707B1 EP1095707B1 (fr) 2006-09-13

Family

ID=7927177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00123535A Expired - Lifetime EP1095707B1 (fr) 1999-10-29 2000-10-27 Ensemble de valves de changement de couleur et procédé de rinçage d'un dispositif de changement de couleur

Country Status (4)

Country Link
EP (1) EP1095707B1 (fr)
AT (1) ATE339256T1 (fr)
DE (2) DE19951956A1 (fr)
ES (1) ES2270771T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184111A4 (fr) * 2007-08-31 2011-08-10 Toyota Motor Co Ltd Dispositif de chargement de matériau de couchage
US20110262622A1 (en) * 2008-10-24 2011-10-27 Frank Herre Coating device and associated coating method
US9254501B2 (en) 2009-10-21 2016-02-09 Toyota Jidosha Kabushiki Kaisha Method of supplying paint to a paint cartridge
US11097291B2 (en) 2016-01-14 2021-08-24 Dürr Systems Ag Perforated plate with increased hole spacing in one or both edge regions of a row of nozzles
US11529645B2 (en) 2016-01-14 2022-12-20 Dürr Systems Ag Perforated plate with a reduced diameter in one or both edge regions of a row of nozzles

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056259A1 (de) 2000-11-14 2002-05-23 Duerr Systems Gmbh Farbwechselventilanordnung und Verfahren zu ihrer Steuerung
DE10233404A1 (de) 2002-07-23 2004-02-05 Dürr Systems GmbH Verfahren und Ventilanordnung zum Steuern des Farbwechsels in einer Beschichtungsanlage
DE10335358A1 (de) * 2003-08-01 2005-03-10 Duerr Systems Gmbh Beschichtungsmittelwechsler
DE10338064A1 (de) * 2003-08-19 2005-05-25 Daimlerchrysler Ag Verfahren zum Spülen von Farbventilen
DE102006058562A1 (de) 2006-12-12 2008-08-14 Dürr Systems GmbH Beschichtungseinrichtung mit einer Dosiervorrichtung
WO2008071273A2 (fr) 2006-12-12 2008-06-19 Dürr Systems GmbH Dispositif de revêtement équipé d'un dispositif de dosage
DE102007029195A1 (de) 2007-06-25 2009-02-19 Dürr Systems GmbH Beschichtungseinrichtung mit einer Dosiervorrichtung
DE102018131496A1 (de) 2018-12-10 2020-06-10 Lübbers Anlagen- und Umwelttechnik GmbH Hochdruckventil für eine Zerstäuberdüse und Verfahren zum Nachreinigen eines Hochdruckventils

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3221326A1 (de) 1982-06-05 1983-06-16 Daimler-Benz Ag, 7000 Stuttgart Anlage zum maschinellen farbspritzen von serienteilen
EP0979964A2 (fr) 1998-08-12 2000-02-16 Dürr Systems GmbH Ensemble de soupapes pour la commande de l'écoulement du matériau dans une installation de revêtement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619322B1 (fr) * 1987-08-14 1989-12-29 Sames Sa Installation de projection de produit de revetement tel que par exemple une peinture hydrosoluble

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3221326A1 (de) 1982-06-05 1983-06-16 Daimler-Benz Ag, 7000 Stuttgart Anlage zum maschinellen farbspritzen von serienteilen
EP0979964A2 (fr) 1998-08-12 2000-02-16 Dürr Systems GmbH Ensemble de soupapes pour la commande de l'écoulement du matériau dans une installation de revêtement

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184111A4 (fr) * 2007-08-31 2011-08-10 Toyota Motor Co Ltd Dispositif de chargement de matériau de couchage
US8016001B2 (en) 2007-08-31 2011-09-13 Toyota Jidosha Kabushiki Kaisha Painting material charging device
US20110262622A1 (en) * 2008-10-24 2011-10-27 Frank Herre Coating device and associated coating method
US10150304B2 (en) * 2008-10-24 2018-12-11 Duerr Systems, Gmbh Coating device and associated coating method
US10814643B2 (en) 2008-10-24 2020-10-27 Dürr Systems Ag Coating device and associated coating method
US11241889B2 (en) 2008-10-24 2022-02-08 Dürr Systems GmbH Coating device and associated coating method
US9254501B2 (en) 2009-10-21 2016-02-09 Toyota Jidosha Kabushiki Kaisha Method of supplying paint to a paint cartridge
US11097291B2 (en) 2016-01-14 2021-08-24 Dürr Systems Ag Perforated plate with increased hole spacing in one or both edge regions of a row of nozzles
US11529645B2 (en) 2016-01-14 2022-12-20 Dürr Systems Ag Perforated plate with a reduced diameter in one or both edge regions of a row of nozzles

Also Published As

Publication number Publication date
EP1095707B1 (fr) 2006-09-13
DE50013459D1 (de) 2006-10-26
ES2270771T3 (es) 2007-04-16
EP1095707A3 (fr) 2003-06-04
ATE339256T1 (de) 2006-10-15
DE19951956A1 (de) 2001-06-13

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