EP0865830A2 - Dispositif de changement de teinte avec sens de circulation de vernis réversible - Google Patents

Dispositif de changement de teinte avec sens de circulation de vernis réversible Download PDF

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Publication number
EP0865830A2
EP0865830A2 EP98104412A EP98104412A EP0865830A2 EP 0865830 A2 EP0865830 A2 EP 0865830A2 EP 98104412 A EP98104412 A EP 98104412A EP 98104412 A EP98104412 A EP 98104412A EP 0865830 A2 EP0865830 A2 EP 0865830A2
Authority
EP
European Patent Office
Prior art keywords
paint
supply line
color
line
displacer
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
EP98104412A
Other languages
German (de)
English (en)
Other versions
EP0865830A3 (fr
EP0865830B2 (fr
EP0865830B1 (fr
Inventor
Stefan Esslinger
Herbert Martin
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
INLAC IND LACKIERANLAGEN GmbH
INLAC Industrie-Lackieranlagen 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=7822967&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0865830(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by INLAC IND LACKIERANLAGEN GmbH, INLAC Industrie-Lackieranlagen GmbH filed Critical INLAC IND LACKIERANLAGEN GmbH
Publication of EP0865830A2 publication Critical patent/EP0865830A2/fr
Publication of EP0865830A3 publication Critical patent/EP0865830A3/fr
Application granted granted Critical
Publication of EP0865830B1 publication Critical patent/EP0865830B1/fr
Publication of EP0865830B2 publication Critical patent/EP0865830B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • 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
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • 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 device for painting Objects with different colors in circular guided color lines, each assigned to a color are available with a spray gun, one Paint supply line, which is a painting compound between the circular color line and the Manufactures spray gun or its nozzle, and if necessary one between the circular color lines and the color changer provided by the one color line each with the ink supply line is connectable, with a displacement body for cleaning the Paint feed line in the paint flow direction Paint feed line is movable and in the area of end of the paint supply line on the spray gun side Feeding device for a pressurized flowable medium is provided.
  • a painting facility with the characteristics of the generic term of claim 1 is from U.S. Patent 5,221,047 known.
  • the displacer becomes an expression the color in the paint feed line in the paint flow direction moved to the end of the spray gun, there by means of a discharge device from the paint feed line removed and via a separate line to a Infeed device returned. At this time too bridge is a plurality of displacers intended. A return of in the paint supply line color is not back in the paint line intended. But this is taken in isolation, from JP 07 171 451 A known.
  • the present invention is based on the previously known painting equipment based on the task Color feedback from the stub Ink supply line with displacers back to one respective circular color line still to make it more effective.
  • This task is carried out at a painting facility mentioned type according to the invention solved in that the color of the ink supply line against the Paint flow direction is traceable and that to Support the color return in the ink supply line the flexible, resiliently deformable displacement body from the inflowable medium in the Paint supply line against the paint flow direction in Return direction movable and during subsequent rinsing the paint supply line back towards the spray gun can be moved back.
  • a flowable medium which is preferably a gas such as compressed air, or can also be a liquid solvent
  • the liquid medium acts like a Stamp printing on the ink in the feed line and ensures a thirty to fifty percent more effective color return. Because it was found that the only known from the Color feedback device in the form of a gear pump on the Ink supply line exerted suction pressure with distance decreases sharply from the pump and that on the walls of the Line paint sticks, which is not returned, but in a subsequent rinsing process together with the flushing medium is discarded. Because that when returning of color, the flowable medium under excess pressure Return direction is introduced into the ink supply line, could color recovery rates of eighty percent and can be achieved through it.
  • a flowable medium which is preferably a gas such as compressed air, or can also be a liquid solvent
  • the feeder be a valve includes, which on its color side without dead space to the Ink supply line connects.
  • each ink supply line is flexible, compliant deformable displacer provided by the over the inflowing medium in the Ink supply line movable in the return direction and at then rinsing the paint supply line back in Direction to the spray gun can be moved back.
  • Recovery rate can be increased to 95% and more because by moving the flexible displacer in Return direction, the inner wall of the line is virtually wiped becomes.
  • the diameter of the displacer corresponds to undeformed condition essentially that Inner pipe diameter or is slightly larger than this.
  • Stop device provided for the displacer, which a kind of stop or limitation for the displacer forms.
  • the stop device is particularly simple and therefore advantageously from one Cross-sectional constriction formed in the ink supply line.
  • a sensor for Detection of the displacer provided in Area of the stop device, in particular in Return direction in front of the stop device.
  • This sensor interacts with a control of the painting system. If the sensor recognizes that the displacer in its End position has reached the stop device, so the return process is finished and a rinsing process Ink supply line can be initiated.
  • the displacement body comprises an inductive one detectable signal bodies, e.g. a metallic, especially spherical core.
  • FIG. 1 shows a schematic representation of a device for painting objects with different colors.
  • the colors are routed via circular color lines 2, from a merely indicated color supply room 4 go out and return to this, to the Painting device introduced.
  • the painting facility includes a color changer 6, which with each of the Color lines 2 is optionally connectable. From the color changer 6, a paint feed line 8 is provided, which a paint connection between the color changer 6 and a spray gun 10 or a nozzle 12 of the Spray gun 10 manufactures.
  • Compressed air supplies are provided, one Compressed air line 14 opens into the color changer 6 and one leads further compressed air line 16 to the spray gun 10 and the so-called spray air for atomizing or dusting the Paint in the spray mode of the spray gun 10 supplies.
  • a compressed air line 18 extends as Part of a feed device 20 for an under pressure standing flowable medium (compressed air) to the Ink supply line 8 and opens via a valve 21 in the Paint feed line 8.
  • one of the shut-off valves is between a respective color line 2 and the color changer 6 opened so that the in the circular Color line pressure prevailing over the color changer 6 spreads into the feed line 8. Because this pressure to Operating the spray gun is sufficient does not need another pump to be used and one in the Paint pump 22 provided gear pump is about bypassed bypass line 24.
  • a pneumatically controllable color pressure regulator 26 provided by an electrically operated 3/2-way valve or proportional valve 28 is controlled and to keep a predeterminable constant on each related color is used for coordinated printing.
  • the Color pressure regulator 26 is also designed so that it in two flow directions can be flowed through.
  • the gun holder 30 includes one Limit switch 32, which to a not shown
  • the control unit signals the "gun in holder” signal. In this position, the spray gun 10 is in the effective range a trigger device cooperating with the control 34. If the control system receives the signal "Gun in holder” receives, the bypass line 24 at the gear pump 22 closed, and the gear pump 22 is called Color return device 36 driven so that it in Direction towards the color changer 6 promotes. Now is about a Directional control valve 38 in the compressed air line 18 compressed air on Valve 21 given.
  • the valve 21 is a Diaphragm valve, which is applied when pressure is applied across the Compressed air line 18 opens against the force of a spring, so that a pressure medium connection to the ink supply line 8 will be produced.
  • resiliently deformable displacer 40 pressurized by the compressed air and in the paint supply line 8 in the return direction, i.e. towards the Color changer 6 moves.
  • the displacement body 40 acts here in a way as a stamp and expresses the in the Paint supply line 8 standing paint column to the suction side of the Gear pump 22.
  • the gear pump 22 then conveys the paint contrary to that in the circular color lines 2 pending print back into the respective ink line 2.
  • the displacer body 40 slides against the inside the ink supply line 8 and cleans it up to a certain extent.
  • the displacer 40 finally strikes one Stop device 42 in the form of a constriction 44 in the Paint feed line 8 on.
  • a sensor 46 for detecting the displacer 40 intended.
  • the sensor 46 works inductively and reports that if it is passed by the displacer 40, a corresponding signal to the controller. Thereupon will the return process ends. Almost all of the color that between the valve 21 and the color pressure regulator 26 or the stop device 42 for the displacement body 40 was returned for recycling. It will now by alternately opening a valve in a still not mentioned solvent line 48 and in the beginning mentioned compressed air line 14 initiated a flushing process.
  • the mixture of compressed air and solvent is in the Color changer 6 initiated and passed in Paint flow direction, the gear pump 22 on the Bypass line 24 and passes through the color pressure regulator 26 the stop device 42 and acts on and transports the Displacer 40 back towards the Spray gun 10.
  • the deduction of the Spray gun 10 actuated, so that Solvent / air mixture via the nozzle 12 in the Get gun holder 30 and from there one separate disposal can be supplied.
  • the Displacer 40 again the position shown in Figure 2 has taken, the rinsing process is finished and it can another by opening another shut-off valve Paint line 2 with the color changer 6 or Ink supply line 8 are connected.
  • FIG. 2 shows the spray gun 10, the Feed device 20 cut for the compressed air is shown.
  • the compressed air line 18 opens into one Cross bore 50, which is in a metallic block 52nd is formed and with a pressure chamber 54 of the valve 20th connected is. If the directional control valve shown in Figure 1 38 is opened, the compressed air is below approx. 6 to 8 bar in the pressure chamber 54. This will make a circumference clamped membrane 56 against a spring preload 58 deflected. As a result, one with the membrane 56 connected valve needle 60 is lifted from its sealing seat 62, so that a flow connection between the pressure chamber 54 and the ink supply line 8 is manufactured.
  • the sealing seat 62 delimits an opening that is free of dead space in a Shape recess 64 of the ink supply line 8 opens.
  • This Form recess 64 also forms a rest position for the Displacer 40. So if - as just described - the valve needle 60 is lifted from the sealing seat 62, so the displacer 40 out of the mold recess 64 in the ink supply line 8 is pressed and moves up to the stop device 42, the displacer 40 the in the ink supply line 8 ink column Intake side of the gear pump 22 pushes in front of it.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Spray Control Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Nozzles (AREA)
EP98104412A 1997-03-11 1998-03-11 Dispositif de changement de teinte avec sens de circulation de vernis réversible Expired - Lifetime EP0865830B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19709988 1997-03-11
DE19709988A DE19709988C2 (de) 1997-03-11 1997-03-11 Lackiereinrichtung mit mehreren kreisförmig geführten Farbleitungen

Publications (4)

Publication Number Publication Date
EP0865830A2 true EP0865830A2 (fr) 1998-09-23
EP0865830A3 EP0865830A3 (fr) 2002-01-30
EP0865830B1 EP0865830B1 (fr) 2005-06-08
EP0865830B2 EP0865830B2 (fr) 2009-09-16

Family

ID=7822967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98104412A Expired - Lifetime EP0865830B2 (fr) 1997-03-11 1998-03-11 Dispositif de changement de teinte avec sens de circulation de vernis réversible

Country Status (3)

Country Link
EP (1) EP0865830B2 (fr)
DE (2) DE19709988C2 (fr)
ES (1) ES2242988T5 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0935999A1 (fr) * 1998-02-13 1999-08-18 Lactec Gesellschaft für moderne Lackiertechnik mbH Méthode et appareil de changement de couleur dans une installation de revêtement utilisant un racleur
DE19817377A1 (de) * 1998-04-18 1999-11-18 Lactec Gmbh Verfahren und Vorrichtung zum Zuführen von Lack zu mindestens zwei Zerstäubern
FR2808709A1 (fr) * 2000-05-15 2001-11-16 Eisenmann France Sarl Procede de recuperation d'un fluide de revetement, tel qu'une peinture, contenu dans une installation
WO2005092527A1 (fr) * 2004-03-26 2005-10-06 Putzmeister Aktiengesellschaft Dispositif et procede de nettoyage d'une conduite de refoulement de pates
EP2323836A2 (fr) * 2008-09-15 2011-05-25 Dürr Systems GmbH Procédé de production d'un élément structural d'installation de peinture et élément structural d'installation de peinture correspondant

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59809327D1 (de) * 1997-07-03 2003-09-25 Lactec Gmbh Vorrichtung zum Lackieren
DE19742588B4 (de) 1997-09-26 2009-02-19 Dürr Systems GmbH Verfahren zum serienweisen Beschichten von Werkstücken
DE10033986A1 (de) 2000-07-13 2002-01-24 Duerr Systems Gmbh Verfahren zur Verwendung eines Molches in einer Beschichtungsanlage und Molch hierfür
DE10115463A1 (de) 2001-03-29 2002-10-02 Duerr Systems Gmbh Zerstäuber für eine Beschichtungsanlage und Verfahren zu seiner Materialversorgung
DE10115470A1 (de) 2001-03-29 2002-10-10 Duerr Systems Gmbh Beschichtungsanlage mit einer Zerstäuberwechselstation
DE10115472A1 (de) 2001-03-29 2002-10-10 Duerr Systems Gmbh Ventileinheit für eine elektrostatische Beschichtungsanlage
DE10115467A1 (de) 2001-03-29 2002-10-02 Duerr Systems Gmbh Werkzeugwechselsystem für eine Maschine
DE10202711A1 (de) 2002-01-24 2003-07-31 Duerr Systems Gmbh Zerstäuber für die elektrostatische Serienbeschichtung von Werkstücken
DE10211244A1 (de) * 2002-03-13 2003-10-23 Lactec Ges Fuer Moderne Lackte Lackieranlage zum Aufbringen von flüssigem Beschichtungsmaterial
DE10231421A1 (de) 2002-07-11 2004-01-22 Dürr Systems GmbH Verfahren und System zur Versorgung eines Pulverbeschichtungsgerätes
DE10233198A1 (de) 2002-07-22 2004-02-05 Dürr Systems GmbH Rotationszerstäuber
DE10239516A1 (de) * 2002-08-28 2004-03-18 Dürr Systems GmbH Schlauch für die elektrostatische Beschichtung von Werkstücken
DE10239517A1 (de) 2002-08-28 2004-03-11 Dürr Systems GmbH Beschichtungseinrichtung mit einem Rotationszerstäuber und Verfahren zum Steuern ihres Betriebes
DE10240451A1 (de) 2002-09-02 2004-03-11 Dürr Systems GmbH Sensoranordnung für eine Beschichtungsanlage
DE10245594A1 (de) 2002-09-30 2004-04-08 Dürr Systems GmbH Verfahren zur Kollisionserkennung
US6991178B2 (en) 2003-01-24 2006-01-31 Dürr Systems, Inc. Concentric paint atomizer shaping air rings
DE102004038017B4 (de) * 2004-08-04 2012-07-12 Wolfgang Schmidt Verfahren und Anlage zum zeitlich nacheinander erfolgenden Austrag unterschiedlicher Beschichtungsmaterialien
DE102004042512A1 (de) * 2004-09-02 2006-03-30 Hydac Accessories Gmbh Ventilvorrichtung
US8671495B2 (en) 2006-11-06 2014-03-18 Durr Systems, Inc. Scraper pig

Citations (6)

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Publication number Priority date Publication date Assignee Title
US2258174A (en) † 1940-01-22 1941-10-07 Chawner William Rupert Apparatus for cleaning conduits
US4373225A (en) * 1979-07-06 1983-02-15 Friedrich Wilh. Schwing, Gmbh Piping valve with a housing for the transfer of a wiper insertable in conduits that supply pressurized viscous material, preferably concrete
DE9110650U1 (de) † 1990-09-25 1991-10-24 Streit AG Lack- und Farbenfabrik, Frauenfeld Selbstreinigende Spritzeinrichtung in einem Farbspritzstand für das Lackieren von Gegenständen; sowie hierfür geeignete Spritzpistole
DE4035435C1 (en) † 1990-11-08 1992-03-19 Bayer Ag, 5090 Leverkusen, De Transfer station of pipeline - incorporates by=pass and pig trap system
US5221047A (en) * 1991-08-13 1993-06-22 Gmfanuc Robotics Corporation Method and system for cleaning a paint supply line and changing paint colors in production paint operations
DE4423643A1 (de) * 1994-07-06 1996-01-11 Ind Lackieranlagen Schmidt Gmb Einrichtung zum Lackieren von Gegenständen mit verschiedenen Farben

Family Cites Families (2)

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Publication number Priority date Publication date Assignee Title
DE8911560U1 (de) * 1989-09-28 1990-01-25 Upmann, Herko, Dipl.-Ing. Spritzpistole
DE4223054A1 (de) * 1992-07-14 1994-01-20 Gema Volstatic Ag St Gallen Verfahren und Vorrichtung zum Reinigen von Pulverleitungen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2258174A (en) † 1940-01-22 1941-10-07 Chawner William Rupert Apparatus for cleaning conduits
US4373225A (en) * 1979-07-06 1983-02-15 Friedrich Wilh. Schwing, Gmbh Piping valve with a housing for the transfer of a wiper insertable in conduits that supply pressurized viscous material, preferably concrete
DE9110650U1 (de) † 1990-09-25 1991-10-24 Streit AG Lack- und Farbenfabrik, Frauenfeld Selbstreinigende Spritzeinrichtung in einem Farbspritzstand für das Lackieren von Gegenständen; sowie hierfür geeignete Spritzpistole
DE4035435C1 (en) † 1990-11-08 1992-03-19 Bayer Ag, 5090 Leverkusen, De Transfer station of pipeline - incorporates by=pass and pig trap system
US5221047A (en) * 1991-08-13 1993-06-22 Gmfanuc Robotics Corporation Method and system for cleaning a paint supply line and changing paint colors in production paint operations
DE4423643A1 (de) * 1994-07-06 1996-01-11 Ind Lackieranlagen Schmidt Gmb Einrichtung zum Lackieren von Gegenständen mit verschiedenen Farben

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ING. H.-D. KLUDUS: 'Möglichkeiten und Grenzen der Molchtechnik' CHEMIE-TECHNIK Mai 1995, HEIDELBERG, †

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0935999A1 (fr) * 1998-02-13 1999-08-18 Lactec Gesellschaft für moderne Lackiertechnik mbH Méthode et appareil de changement de couleur dans une installation de revêtement utilisant un racleur
DE19817377A1 (de) * 1998-04-18 1999-11-18 Lactec Gmbh Verfahren und Vorrichtung zum Zuführen von Lack zu mindestens zwei Zerstäubern
DE19817377B4 (de) * 1998-04-18 2013-01-03 Lactec Gmbh Verfahren und Vorrichtung zum Zuführen von Lack zu mindestens zwei Zerstäubern
FR2808709A1 (fr) * 2000-05-15 2001-11-16 Eisenmann France Sarl Procede de recuperation d'un fluide de revetement, tel qu'une peinture, contenu dans une installation
WO2001087496A1 (fr) 2000-05-15 2001-11-22 Eisenmann France Sarl Procede de recuperation d'un fluide de revêtement, tel qu'une peinture, contenu dans une installation
WO2005092527A1 (fr) * 2004-03-26 2005-10-06 Putzmeister Aktiengesellschaft Dispositif et procede de nettoyage d'une conduite de refoulement de pates
CN1913983B (zh) * 2004-03-26 2010-06-09 普茨迈斯特混凝土泵有限公司 用以清洁泥浆输送管的设备和方法
EP2323836A2 (fr) * 2008-09-15 2011-05-25 Dürr Systems GmbH Procédé de production d'un élément structural d'installation de peinture et élément structural d'installation de peinture correspondant

Also Published As

Publication number Publication date
EP0865830A3 (fr) 2002-01-30
DE19709988C2 (de) 2002-01-24
DE19709988A1 (de) 1998-10-01
ES2242988T3 (es) 2005-11-16
EP0865830B2 (fr) 2009-09-16
ES2242988T5 (es) 2009-12-14
DE59812844D1 (de) 2005-07-14
EP0865830B1 (fr) 2005-06-08

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