EP1384518B1 - Procédé ainsi qu'ensemble de valves pour commander le changement de couleur dans une installation de revêtement - Google Patents

Procédé ainsi qu'ensemble de valves pour commander le changement de couleur dans une installation de revêtement Download PDF

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Publication number
EP1384518B1
EP1384518B1 EP03016337A EP03016337A EP1384518B1 EP 1384518 B1 EP1384518 B1 EP 1384518B1 EP 03016337 A EP03016337 A EP 03016337A EP 03016337 A EP03016337 A EP 03016337A EP 1384518 B1 EP1384518 B1 EP 1384518B1
Authority
EP
European Patent Office
Prior art keywords
paint
valve
valves
passage
coating material
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
EP03016337A
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German (de)
English (en)
Other versions
EP1384518A2 (fr
EP1384518A3 (fr
Inventor
Rainer Melcher
Stefano Giuliano
Thomas Buck
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
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Filing date
Publication date
Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Publication of EP1384518A2 publication Critical patent/EP1384518A2/fr
Publication of EP1384518A3 publication Critical patent/EP1384518A3/fr
Application granted granted Critical
Publication of EP1384518B1 publication Critical patent/EP1384518B1/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
    • 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
    • B05B12/1481—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 comprising pigs, i.e. movable elements sealingly received in supply pipes, for separating different fluids, e.g. liquid coating materials from solvent or air

Definitions

  • the invention relates to a method for controlling the color change in a coating system and a color change valve arrangement according to the preamble of the independent claims.
  • Farb coneventilanssenen or short color changer allow in paint shops for series coating of workpieces such as motor vehicles during the painting a rapid changeover from one color to another and consist mainly of a number of controllable color valves, which are distributed along a color channel common color ( DE 198 36 604 . DE 199 51 956 ).
  • a color channel common color DE 198 36 604 . DE 199 51 956 .
  • Another valve is used for venting and disposal of the detergent and paint residues in a return line.
  • the color changer usually consist of modular Nadelventilblöcken whose color, Puls Kunststoff-, Spülsch- and return valves are distributed in the housing of the color changer along a central color channel, in each case two valves can face each other in a boxer arrangement.
  • the valves can also be distributed in a single-row or in groups surrounding the color channel in a circle along the color channel.
  • the color channel is closed at one end of the color changer and opens at the other end in an example leading to a nebulizer output line. Disadvantages are the color and detergent losses in the color channel and necessary for rinsing the color channel rinsing time in the known color changers.
  • the present invention seeks to reduce the losses of coating material and detergent in a color change and the time required for rinsing.
  • the size of the color channel is reduced in each case to the necessary length between the respective selected color valve and the output of the color changer during color change, thereby achieving a significant reduction in its color change to be cleaned volume.
  • the smallest possible loss of coating material and detergent and shorter rinse times arise during the color change.
  • the color channel is piggable connected to the output line and thus can be gemolcht in its respective unobstructed part.
  • the method described here and the color changer are particularly suitable for paint systems for wet paint or powder coating (hereinafter referred to as coating material) for the standard coating of workpieces such as motor vehicle bodies.
  • the in Fig. 1 shown color changer consists in a conventional manner mainly of several linearly placed in Boxer color valves F1-F5, which are connected in a common housing 1 via a central color channel 10. Their number is usually much larger in practice than shown.
  • the paint valves are designed as opening into the paint channel 10 needle valves, the needle 9 of which is displaceable by a controlled drive opens or closes the path from a supply line 12 into the paint channel.
  • At the output of the paint channel 10 for example, in the direction of a nebulizer leading hose is connected as output line 4.
  • the color changer shown corresponds to the prior art. What is new, however, is an adjustable gate valve 7, which is introduced from the output line 4 facing away from the end in the paint channel 10 and at its output line end facing a color channel sealing shut-off 6, which may abut, for example, with sealing lips on the channel inner wall. For linear displacement and adjustment of the gate valve 7, it is connected to a controlled drive device 8.
  • the gate valve 7 is previously moved by the drive unit 8 in a position in which the shut-off 6 directly on the side facing away from the output line 4 side of the mouth of the paint valve F3 in the paint channel 10, that is placed on the valve connecting the valve with the paint channel hole.
  • the entire unneeded part of the color channel 10 is closed relative to the color changer output.
  • the coating material flows via its supply line 12 only from this valve directly to the common output line of the color changer.
  • the slide 7 After closing the color valve F3 used in the illustrated example, the slide 7 is moved back so far in the direction away from the outlet line, that the paint channel 10 and also the end face of the sealing and shutoff 6 cleaned with the introduced through the valves V and PL media and the media can be removed through the valve RF. Furthermore, the paint channel 4 can be cleaned by the shut-off element 6 itself, which is pushed for this purpose by the slider 7 to the output of the paint channel and possibly to the output line 4 and this abstreift like a pig on the inner wall of the channel adhesive media residues ,
  • valve functions such as the Spülstoff-, pulse air and / or recirculation valve V, PL or RF not in the housing 1, but at least their outlet or inlet openings to install in the gate valve 7 and mitzube admire ,
  • the gate valve could remain for flushing in its previous shut-off position and shorten the ink channel 10 also during flushing accordingly.
  • the shut-off 6 may be fixedly connected to the slide 7, but there is also the possibility that appropriate then trained as a pig shut-off from the output line 4 coming through the paint channel 10 through to press on the front end of the slider 7, in this case is set so that the pig as a shut-off element 6 seals the paint channel at the color valve F3 to be opened.
  • a pig of the paint channel 10 can also be used to push back unused coating material into the relevant feed line 12 through the previously and then reopened paint valve F3 according to the reflow method known per se and / or for conveying the paint material previously introduced through the paint valve in the direction of the atomizer in the for the coating process in each case predetermined amount eg be useful after the well-known push-out method.
  • both the output line 4 forming tube and the paint channel 10 and their compound 3 are preferably formed piggable, and they (in contrast to the internal paragraphs and changes in diameter not piggable terminal connections known color changer) with continuous internal diameter continuously and seamlessly should be connected to each other.
  • the end face of the needle 14 is shown by the concave rounded recess 15 of the cross-sectional shape of the paint channel 10 adapted so that not only dead spaces are avoided, but also the end face of the needle 14 can be cleaned by the passing past her shut-off 6 or newt.
  • Another possibility for reducing dead spaces and improving the flushability is a non-circular, for example, oval cross-sectional shape of the paint channel according to the DE 198 36 604 ,
  • FIG. 3 illustrated embodiment of the invention is true with respect to the housing 201, the valves F1 to F5, PL, V and RF contained therein, the valve drive 209 and the supply lines 212 for the coating material and in terms of connected via the preferably piggable connection 203 to the color channel of the color changer tubular Output line 204 with the color changer after Fig. 1 match.
  • a tube member 202 which is connected at one end to the piggable connection 203 and slidably inserted into the central channel of the color changer, so that the interior of the tubular element 202 in this embodiment the actual color channel 210 of the color changer forms.
  • the tubular element 202 is (in principle similar to the gate valve 7 in Fig. 1 ) is adjusted by a drive device 205 such that an opening (not shown) provided in the tube wall at 211 is aligned with the mouth of the respectively selected color valve, in this case the valve F3.
  • the circumference of the tubular element 202 is suitably sealed against the inner wall of the central color changer channel surrounding it.
  • the tubular element can be displaced by its drive device 205 as shown, together with the connection 203 and the output line 204.
  • the actual shut-off element closing off the color channel can be formed by the closed bottom of the tubular element 202, which can be located directly at the opening 211 of the tube wall.
  • a displaceable in the tubular element sealing member or pig 206 which is placed in the displaceable tube member 202 on the side facing away from the output line 204 directly to the inlet opening 211 of the tube wall.
  • the tube element 202 may extend for this purpose through the entire color changer and on the side facing away from the output line 204 of the opening 211 include a slide 207, which in turn is displaceable by its own drive means 208 within the tubular member 202 to the position of the sealing body or pig 206 and push it through the pipe.
  • the slider 207 and its drive device 208 can be moved by the drive device 205 of the tubular element 202 with this.
  • the pig 206 could also be pushed out of the end region of the tube element 202 by compressed air instead of by a slide 207.
  • the pipe element 202 can be moved to a position in which the opening 211 or possibly several such openings in the pipe wall are aligned with the valves PL, V and RF. Similar to the case of the embodiment of Fig. 1 But these valve functions could also be combined with the pipe element and moved.
  • the drive of the gate valve 7 in Fig. 1 and / or the tubular element 202 and / or the slide 207 in Fig. 3 electromechanical, pneumatic or hydraulic in both linear and rotational direction. It is also conceivable, instead of the movements of the gate valve 7 and the tubular element 202 to move the color changer itself relative to them linear or rotate.

Landscapes

  • Spray Control Apparatus (AREA)
  • Pens And Brushes (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Coating Apparatus (AREA)

Claims (15)

  1. Procédé pour commander le changement de couleur dans une installation d'enduction en utilisant un ensemble de vannes de changement de couleur avec des vannes de couleur commandées (F1 à F5), réparties le long d'un canal de couleur (10, 210) en débouchant dans celui-ci et attribuées à des matières de revêtement de différentes couleurs, dans lequel
    après l'ouverture de la vanne de couleur (F3) avec une matière de revêtement d'une couleur souhaitée, cette matière de revêtement sort d'une conduite d'amenée (12, 212) à travers la vanne de couleur (F3) ouverte dans le canal de couleur et s'écoule de celui-ci dans une conduite de sortie (4, 204) commune aux couleurs, et
    après la fermeture de la vanne de couleur (F3) et avant l'ouverture d'une vanne de couleur (F1 à F5) pour la matière colorée souhaitée suivante, l'ensemble de vannes de changement de couleur est rincé,
    caractérisé en ce qu'avant l'ouverture de la vanne de couleur (F3) pour la matière de revêtement respectivement souhaitée, la partie du canal de couleur (10, 210) se trouvant du côté de l'embouchure de la vanne de couleur (F3) à ouvrir qui est détourné de la conduite de sortie (4, 204) est fermée par rapport à la partie tournée vers la conduite de sortie (4, 204).
  2. Procédé selon la revendication 1, caractérisé en ce que pour fermer le canal de couleur (10, 210), un élément de retenue (6, 202, 206) est poussé à travers le canal de couleur.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'une matière de revêtement demandée plus souvent est amenée à des vannes de couleur (F4, F5) qui sont plus proches de la conduite de sortie (4, 204) que des vannes de couleur (F1, F2) auxquelles une matière de revêtement demandée moins souvent est amenée.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une matière de revêtement restant à l'issue de l'opération d'enduction après la fermeture de la vanne de couleur (F3), avant l'ouverture d'une vanne de couleur (F1 à F5) pour la matière de revêtement souhaitée suivante, est repoussée par un écouvillon hors de la conduite de sortie (4, 204) et de la partie non fermée du canal de couleur (10, 210) à travers la vanne de couleur (F3) réouverte à cet effet dans la conduite d'amenée (12, 212) de celle-ci, l'écouvillon étant déplacé lorsque la matière de revêtement est repoussée hors de la conduite de sortie (4, 204) dans le canal de couleur (10, 210) jusqu'au point de retenue de celui-ci à l'embouchure de la vanne de couleur ouverte (F3).
  5. Ensemble de vannes de changement de couleur pour relier à un élément d'application un certain nombre de conduites d'amenée (12, 212) pour une matière de revêtement de différentes couleurs sélectionnables,
    avec des vannes de couleur (F1 à F5) pour les couleurs sélectionnables, qui sont montées entre respectivement une conduite d'amenée (12, 212) et un canal de couleur (10, 210) qui leur est commun et dont la sortie mène à une conduite de sortie (4, 204) commune aux couleurs,
    dans lequel plusieurs vannes de couleur (F1 à F5) sont disposées de façon répartie le long du canal de couleur (10, 110),
    dans lequel un élément de retenue mobile (6, 202, 206) est prévu dans le canal de couleur (10, 210),
    caractérisé en ce que
    l'élément de retenue mobile (6, 202, 206) peut être ajusté par un dispositif d'entraînement réglable (8, 205, 208) dans des positions sélectionnables dans lesquelles il ferme la partie du canal de couleur (10, 210) qui se trouve sur le côté détourné de la conduite de sortie (4, 204) de la vanne de couleur (F3) respectivement sélectionnée part rapport à la partie tournée vers la conduite de sortie (4, 204).
  6. Ensemble de vannes de changement de couleur selon la revendication 5, caractérisé en ce que le dispositif d'entraînement (8) permet de réaliser un mouvement relatif entre les vannes de couleur (F1 à F5) et un verrou de retenue (7) qui s'étend de l'extrémité détournée de la conduite de sortie (4) du canal de couleur (10) dans le canal de couleur, et à l'extrémité duquel, tournée vers la conduite de sortie (4), se trouve l'élément de retenue (6) dans sa position de fermeture à l'embouchure de la vanne de couleur (F3) respectivement sélectionnée.
  7. Ensemble de vannes de changement de couleur selon la revendication 5 ou 6, caractérisé en ce que l'élément de retenue (6) est un écouvillon ou un corps d'étanchéité pouvant être déplacé par le verrou de retenue (7) et adjacent à la paroi intérieure du canal de couleur (10).
  8. Ensemble de vannes de changement de couleur selon l'une quelconque des revendications 5 à 7, caractérisé en ce qu'un dispositif d'entraînement (205) permet d'effectuer un mouvement relatif entre les vannes de couleur (F1 à F5) et un élément de tuyau (202) qui s'étend dans le canal de couleur depuis le côté du canal de couleur (210) détourné de la conduite de sortie (204) et qui comprend l'élément de retenue se trouvant dans la position de fermeture au niveau de l'embouchure de la vanne de couleur (F3) respectivement sélectionnée.
  9. Ensemble de vannes de changement de couleur selon la revendication 8, caractérisé en ce que l'élément de retenue est formé par le fond fermé de l'élément de tuyau mobile (202), et
    l'élément de tuyau (202) comporte au moins une ouverture (211) pouvant s'aligner sur l'embouchure de la vanne de couleur (F3) respectivement ouverte.
  10. Ensemble de vannes de changement de couleur selon l'une quelconque des revendications 5 à 9, caractérisé en ce que le canal de couleur (10, 210), la conduite de sortie (4, 204) et le raccordement (3, 203) entre ceux-ci sont réalisés de façon raclable avec un diamètre intérieur restant constant en continu.
  11. Ensemble de vannes de changement de couleur selon l'une quelconque des revendications 8 à 11, caractérisé en ce que depuis l'extrémité, détournée de la conduite de sortie (204), du canal de couleur (210), un verrou (207) s'étend dans l'élément de tuyau (202), le verrou pouvant être déplacé par un système d'entraînement spécifique (208) dans le canal de couleur.
  12. Ensemble de vannes de changement de couleur selon l'une quelconque des revendications 6 à 11, caractérisé en ce que le verrou (7) ou l'élément de tuyau mobile (202) comprend des ouvertures des vannes qui conduisent un produit de rinçage et/ou de l'air comprimé dans le canal de couleur (10, 210) et/ou qui raccordent une conduite de recyclage au canal de couleur.
  13. Ensemble de vannes de changement de couleur selon l'une quelconque des revendications 5 à 12, caractérisé en ce que les vannes de couleur (F1 à F5) sont des vannes à pointeau dont le pointeau (14) et le siège de vanne (13) forment une transition progressive avec la paroi intérieure du canal de couleur (10, 210) pour diminuer le volume mort lorsque la vanne est fermée.
  14. Ensemble de vannes de changement de couleur selon la revendication 13, caractérisé en ce que la face frontale du pointeau de vanne (14) est adaptée par un évidement concave (15) à la forme de section du canal de couleur (10, 210).
  15. Ensemble de vannes de changement de couleur selon l'une quelconque des revendications 5 à 14, caractérisé en ce que les conduites d'amenée (12, 212) pour une matière de revêtement demandée plus souvent sont raccordées à des vannes de couleur (F4, F5) qui sont disposées plus proche de la conduite de sortie (4, 204) que des vannes de couleur (F1, F2) pour une matière de revêtement demandée moins souvent.
EP03016337A 2002-07-23 2003-07-18 Procédé ainsi qu'ensemble de valves pour commander le changement de couleur dans une installation de revêtement Expired - Lifetime EP1384518B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10233404 2002-07-23
DE10233404A DE10233404A1 (de) 2002-07-23 2002-07-23 Verfahren und Ventilanordnung zum Steuern des Farbwechsels in einer Beschichtungsanlage

Publications (3)

Publication Number Publication Date
EP1384518A2 EP1384518A2 (fr) 2004-01-28
EP1384518A3 EP1384518A3 (fr) 2005-11-16
EP1384518B1 true EP1384518B1 (fr) 2008-03-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03016337A Expired - Lifetime EP1384518B1 (fr) 2002-07-23 2003-07-18 Procédé ainsi qu'ensemble de valves pour commander le changement de couleur dans une installation de revêtement

Country Status (4)

Country Link
EP (1) EP1384518B1 (fr)
AT (1) ATE388765T1 (fr)
DE (2) DE10233404A1 (fr)
ES (1) ES2301739T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0719725B1 (pt) 2006-12-12 2020-04-14 Duerr Systems Gmbh aparelhagem de revestimento para o revestimento em série de peças de trabalho com distintas tonalidades
DE102006058562A1 (de) * 2006-12-12 2008-08-14 Dürr Systems GmbH Beschichtungseinrichtung mit einer Dosiervorrichtung
EP2361691A1 (fr) 2010-02-19 2011-08-31 Ramseier Koatings Technologies AG Sélecteur pour fluides
EP2425899B1 (fr) * 2010-09-06 2013-08-21 LacTec GmbH Changeur de teinte

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19836604A1 (de) 1998-08-12 2000-03-09 Duerr Systems Gmbh Ventilanordnung zur Steuerung des Materialflusses in einer Beschichtungsanlage
DE19846073A1 (de) * 1998-10-06 2000-04-27 Daimler Chrysler Ag Vorrichtung zum Spülen von Lackiereinrichtungen
DE19951956A1 (de) 1999-10-29 2001-06-13 Duerr Systems Gmbh Ventilanordnung und Verfahren zum Spülen eines Farbwechslers
JP3803034B2 (ja) * 2000-03-15 2006-08-02 株式会社大気社 塗装装置

Also Published As

Publication number Publication date
ES2301739T3 (es) 2008-07-01
EP1384518A2 (fr) 2004-01-28
EP1384518A3 (fr) 2005-11-16
DE50309357D1 (de) 2008-04-24
ATE388765T1 (de) 2008-03-15
DE10233404A1 (de) 2004-02-05

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