EP1516676A2 - Méthode d'utilisation un dispositif d'alimentation des produits - Google Patents

Méthode d'utilisation un dispositif d'alimentation des produits Download PDF

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Publication number
EP1516676A2
EP1516676A2 EP04022063A EP04022063A EP1516676A2 EP 1516676 A2 EP1516676 A2 EP 1516676A2 EP 04022063 A EP04022063 A EP 04022063A EP 04022063 A EP04022063 A EP 04022063A EP 1516676 A2 EP1516676 A2 EP 1516676A2
Authority
EP
European Patent Office
Prior art keywords
media
unit
cleaning
medium
line
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
EP04022063A
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German (de)
English (en)
Other versions
EP1516676A3 (fr
EP1516676B1 (fr
Inventor
Frank Reiter
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.)
Reiter and Co KG Oberflachentechnik GmbH
Original Assignee
Reiter and Co KG Oberflachentechnik 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
Application filed by Reiter and Co KG Oberflachentechnik GmbH filed Critical Reiter and Co KG Oberflachentechnik GmbH
Publication of EP1516676A2 publication Critical patent/EP1516676A2/fr
Publication of EP1516676A3 publication Critical patent/EP1516676A3/fr
Application granted granted Critical
Publication of EP1516676B1 publication Critical patent/EP1516676B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 method for operating a media conveyor system, in particular painting plant, with at least one reservoir for a medium that by means of a control unit in a delivery line is fed and by means of a pumping unit in a pumping direction is transported to a dispensing unit, wherein for a Cleaning process fed a cleaning medium in the delivery line becomes.
  • Processes of this type find particular application in the paint industry, where paint shops, for example, the painting of body parts serve in motor vehicles, with the pending paint job by hand, but also by means of machines, such as painting robots or like, can be done.
  • a requirement for pertinent paint shops It is often the type of paint (metallic paints) and / or the color to change accordingly.
  • paint systems (DE 199 37 474 C2) with a gun unit, are applied to the paint on a workpiece can, with a color changer, connect to the at least two paint feeders are connected, with a connecting device, with the gun unit and the color changer together are connected, with a gun unit associated pig station, with a pig station assigned to the color changing device and a pig, which during a cleaning phase of the Pistol unit associated pig station through the connecting device through in the color changing device associated pig station and can be moved back again.
  • the paint transport to the dispensing unit means a pump unit in the form of a gear pump or the like done, which due to the predetermined pump power to large Transport quantities can lead to paint mecanictragendem what in the Lackieranlagen with cleaning pig does not work, since the pertinent Displacer (pig) not through the gear pump through could be transported; despite this circumstance is the well-known, on the use of a pig dispensing pumping solution disadvantageous in this respect, as by the use of inert gas (nitrogen) first an inert gas source is to create, which in turn with correspondingly high costs acquisition and operation, since the spent inert gas for the cleaning process is always nachzubelves.
  • inert gas nitrogen
  • the invention has the object to further improve the known methods, that, while maintaining their good cleaning results, these but more reliable perform at low cost.
  • a pertinent one Task solves a method with the features of the claim 1 in its entirety.
  • the entry of the pertinent cleaning medium can inert gas-free, so that on an expensive supply and Nachbeforatung on inert gas (nitrogen) in the method according to the invention can be completely dispensed with.
  • the method with anyway operated device-side components such that the cleaning medium does not unintentionally reach the reservoir side, but rather that here before a discharge from the delivery line takes place.
  • the inventive method does not need to be limited to the application of paint shops, but is basically suitable for all types of in a delivery line too transporting media, which may be contaminants in the delivery line or in the subsequently arranged dispensing unit to lead.
  • compressed air is used as the cleaning medium or, assisted by compressed air, the cleaning medium is transported in the conveying line.
  • the cleaning medium is preferably a solvent
  • the oxygen components of the compressed air do not interfere such that they could have a damaging effect on the medium in the form of a paint or a paint, as described in EP 1 284 162 A1 is.
  • the cleaning medium without the use of compressed air by means of a pump, for example in the form of a reversible in the direction of rotation gear pump through the delivery line.
  • compressed air supported the cleaning medium is transported through the feed line, this allows the pulse-like cleaning by using pressure surges on the compressed air.
  • the volume of media for metering and recovery is effected by the pumping unit.
  • the intended activation times are determined in order to carry out the metering and recovery of the medium volume. This can be transported in the conveying line with a unit in the conveying direction and in the reverse direction, the media volume.
  • a media pressure regulator is controlled for dosing and the pump unit is driven to recover it. As a result, the two flow directions of the media volume can be controlled and monitored by different units.
  • Procedure is in front of and behind the pump unit (gear pump) in each case a pressure sensor is used in the delivery line, wherein in a bypass line to the pump unit, a bypass valve is used.
  • a pressure sensor is used in the delivery line, wherein in a bypass line to the pump unit, a bypass valve is used.
  • a bypass valve is used in a Schnell Hughesvorgang achievable, in which bypassing the Gear pump, the cleaning medium, for example in the form of solvent compressed air-flushed through the pipe system.
  • Procedure is between delivery line and dispensing unit a media block used for supplying compressed air and / or from Cleaning medium and / or other media, such as hardeners, paints, Paints or the like.
  • a media block used for supplying compressed air and / or from Cleaning medium and / or other media, such as hardeners, paints, Paints or the like.
  • About the at the delivery unit (spray gun) arranged media block can then in such a way another medium, for example, in the form of a paint or a paint, and deliver
  • the conveyor line previously used for the transport of media by switching the direction of rotation of the pump unit by means of the cleaning medium be cleaned.
  • the media volume is determined by means of a control device, in particular in the cleaning operation of the system, taking into account the pumping volume of the pumping unit and the number of their revolutions for controlled removal of the cleaning medium from the delivery line before reaching the control unit. Since the cleaning medium should not reach the supply side of the medium, it must be determined how much cleaning medium is transported in the delivery unit before it reaches the control unit to which the media supply side is connected.
  • the pump volume, the speed of the pump as well as the volume in the delivery line are taken into account. This serves the controlled return of the paint in the reservoir.
  • this ensures that the control unit blocks beforehand and the cleaning medium then leaves the actual application system with delivery line via a branch line that can be controlled via a further valve unit, wherein the pertinent media residues together with cleaning medium can be stored in a collecting container. If appropriate, it is possible to separate the cleaning medium, in particular, if it should be a solvent-containing, from the other cleaned-off color residues in order to be able to supply the cleaning medium of the system again. This benefits the environment and saves operating costs.
  • the media volume in the reservoir pressurized the media volume with compressed air.
  • This can be a Shortening of the return time.
  • This serve with compressed air can support the direction of rotation reversal of Be given pumping unit.
  • a recirculating volume of media is created provided with a negative pressure.
  • This can be achieved be controlled that a reversal of direction of the pump unit is used to push the volume of media in the direction of the reservoir, wherein during the recycling an atomizer nozzle is opened, so that the atmospheric pressure acts on the delivery line, to push back the media volume in the delivery line.
  • This embodiment is particularly suitable when using Hand sprayers in hand painting stations, causing the worker when returning the medium volume, the atomizer nozzle is kept open or by the atomizer nozzle by a controllable device in an open position is held.
  • a cleaning medium in or in reverse conveying direction of the media volume through the delivery line transported is according to another preferred Embodiment of the invention.
  • the control of the conveying direction for the cleaning volume can be from both the spray side and the storage side for the different media.
  • Method is in a hand painting a Handsprühvorraum provided, at least for the return of the media volume via a quick connection device with a puller connected is.
  • This can accelerate the recovery and cleaning by adding a cleaning medium under pressure is fed by compressed air via the puller.
  • the supply of the medium to the atomizer nozzle of the Hand spray device after cleaning the delivery line or a Media changes are accelerated by adding an additional cross section is released to reduce the resistance in the line.
  • the method according to the invention serves to operate a media conveyor system, in particular in the form of a paint shop, as exemplified is shown in the figure.
  • the painting system shown has three reservoir 10 for storing various media, for example in the form of paints or varnishes different color embossing.
  • the control unit 12 is preferably in the Type of valve block constructed with a plurality of individual valves, preferably in the nature of media valves 16, wherein a portion of the media valves 16 the flow and the return to the individual storage containers 10, wherein the pertinent media transport path is indicated with arrows and another part of the media valves 16 is used supplying air 18 and solvent 20.
  • Another media valve 22 is disposed in front of the media valves 16 of the control unit 12 and gives as a branching unit the way free to a sump 24.
  • Als Media valves 16 also serve control valves in the form of solenoid valves.
  • the use of a pre-pressure regulator is in the system according to the invention not necessarily; however, improves the metering accuracy of the system.
  • a Form pressure regulator 26 available for setting the pump pre-pressure for the pump unit 28, for example designed in the form of a gear pump, Worm pump or peristaltic pump, with two counter-rotating Rotation.
  • the pumping unit 28 Before and behind the pumping unit 28 are connected to the delivery line 14 pressure sensors 30, 32 connected, once related to the Pump output, once related to the pump input.
  • a bypass line 34 to the gear pump 28 is a media valve Switched 36, preferably in the open position performing faster rinses serves.
  • a dispensing unit 38 is arranged, the provided with a spray nozzle 40 the media order, in particular in the form of paint or varnish, serves.
  • a 42 as a whole designated media block used, in turn, with media valves 16 is provided, which in turn serve the control of air 18, from Solvents 20 and other media, such as hardener 44 and / or color or paint 46.
  • the im respective storage container 10 stocked paint or paint medium is by means of the control unit 12 via the respectively assignable solenoid valve 16 fed into the delivery line 14, wherein the feed pressure to the Ring line pressure caused by the gear pump as a pump unit 28th equivalent.
  • the input pressure to Pump unit 28 kept constant, and the gear pump promotes the predetermined media volume for the application by the dispensing unit 38.
  • the input and output side of the pump unit 28 is on the associated pressure sensors 30, 32 monitors, and the assignable Valve unit of the media block 42 for the main path of the delivery line 14 is opened, and via the atomizer nozzle 40, the application is carried out the desired paint.
  • a return operation when changing media is then as follows. At a desired change of media or the Hues the amount in the delivery line 14 in the supply line, to which the respective storage container 10 is connected, to push back, the following procedure is planned.
  • the currently used Medium assigned valve 16 remains open and the direction of rotation the pump unit 28 (gear pump) is reversed when closed Media valve 36 in the bypass line 34.
  • the media valve 36 is closed during the return of the media volume held.
  • the gear pump promotes that in the delivery line 14 located medium back into the assignable reservoir 10th
  • the media valve 16 for the Compressed air 18 is opened on the media block 42 and thus a form on the Media column generated in the delivery line.
  • the form pressure regulator 26 is thereby set to maximum passage.
  • the media valve 16 for the solvent 20 on the media block 42 is opened, creating a form of the Media column is generated on the gear pump of the pumping unit 28.
  • the number of revolutions of the pump unit 28 and thus the subsidized Volume is monitored, by means of a non-illustrated Control device, and after a predefined number of revolutions closed the media valve 16 to the control unit 12, whereby the reservoir 10 is shut off from the delivery line 14.
  • the located on the control unit 12 further media valve 22, the forms a kind of dump valve as a branch unit is then together with the bypass valve (media valve 36) of the bypass line 34 and opened the delivery line 14 is backwashed.
  • a cleaning medium can thereby Compressed air 18 and solvent 20, preferably a compressed air-18 solvent-20 mixture, via the media valves 16 of the media block 42 in FIG the delivery line 14 are fed. This can be done both from the side the control unit 12 and from the side of the media block 42 from respectively. With the pertinent mixture is then a pulse rinsing possible via compressed air surges of the compressed air network. After expiration of the Flushing process in the opposite direction, wherein the flushing amount is disposed of in the collecting container 24, the direction of rotation the pumping unit 28 are changed back to conveying, and the new Medium (color, metallic paint or the like) is in the delivery line 14 fed, in which case another reservoir 10 via the Control unit 12 is selected.
  • the new Medium color, metallic paint or the like
  • the system shown in FIG. 1 is preferably provided for robot systems.
  • the media conveyor in a hand painting station is at the location of the media block 42 and the output unit 38 a puller and a Handsprühvorraum provided to to spend the media.
  • the Hand spray device via a quick connection device of the Separator separated.
  • the puller can when recovering of the medium supply the delivery line 14 with compressed air.
  • the puller can act as a kind of dump valve.
  • the functions are in Substantially comparable to the media block 42 and to the hand spray system customized.
  • the process of the invention comes without costly Pigging equipment and may be based on the use of inert gas (nitrogen) without. Instead of solvents, other cleaning media may be used be used.
  • inert gas nitrogen
  • other cleaning media may be used be used.
  • the described plant and method Can be implemented cost-effectively, as a compressed air network regularly is already present on site and solvent during the painting process is needed.
  • the described media conveyor system is not on limits the transport and cleaning of paints or varnishes, but can also be used in other applications come, where a media transport and cleaning necessary becomes.
  • the method described is also suitable for the return the medium before a longer break. Unless about the Plant can also be fed to hardener, it may be an advantage Use inert gas to pressurize the hardener component; but it can also be used with extra dried air.
  • pigs in the known systems is a minimum diameter of 6 mm nominal width of the paint hoses is absolutely necessary. Accordingly, with the system according to the invention, the Material volume in the delivery hoses with a nominal diameter for example, 4.8 mm by 35% compared to the known pigging systems be reduced, resulting in a significant cost reduction accompanied.

Landscapes

  • Spray Control Apparatus (AREA)
  • Coating Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
EP20040022063 2003-09-16 2004-09-16 Méthode d'utilisation un dispositif d'alimentation des produits Expired - Fee Related EP1516676B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10342643 2003-09-16
DE2003142643 DE10342643A1 (de) 2003-09-16 2003-09-16 Verfahren zum Betrieb einer Medien-Förderanlage

Publications (3)

Publication Number Publication Date
EP1516676A2 true EP1516676A2 (fr) 2005-03-23
EP1516676A3 EP1516676A3 (fr) 2005-07-13
EP1516676B1 EP1516676B1 (fr) 2007-04-25

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Application Number Title Priority Date Filing Date
EP20040022063 Expired - Fee Related EP1516676B1 (fr) 2003-09-16 2004-09-16 Méthode d'utilisation un dispositif d'alimentation des produits

Country Status (3)

Country Link
EP (1) EP1516676B1 (fr)
DE (2) DE10342643A1 (fr)
ES (1) ES2286548T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007067558A1 (fr) * 2005-12-08 2007-06-14 Diversified Dynamics Corporation Ensemble pompe électrique réversible et rouleau à peinture
CN103157571A (zh) * 2011-12-08 2013-06-19 天津利福特电梯部件有限公司 对重块双色喷漆自动线流涂设备
CN112657962A (zh) * 2020-12-24 2021-04-16 天津港石油化工码头有限公司 一种氮气清管扫线工艺

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006022570A1 (de) * 2006-05-15 2007-11-29 Dürr Systems GmbH Beschichtungseinrichtung und zugehöriges Betriebsverfahren
DE102006053921B4 (de) 2006-11-15 2016-11-24 Dürr Systems Ag Lackiermaschine mit einem Zerstäuber und zugehöriges Betriebsverfahren
DE102009031180A1 (de) * 2009-06-29 2010-12-30 Magna Steyr Fahrzeugtechnik Ag & Co Kg Vorrichtung zur Beschichtung eines Werkstückes
DE102010047448A1 (de) * 2010-10-04 2012-04-05 Dürr Systems GmbH Bedarfsgerechtes Steuerverfahren für eine Beschichtungsmittelpumpe und entsprechende Pumpensteuerung
DE202012100527U1 (de) 2012-02-17 2013-05-27 Reiter Gmbh + Co. Kg Medienventil für eine Medienförderanlage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1485255A (en) * 1975-03-03 1977-09-08 Champion Spark Plug Co Powder coating colour change method and apparatus
GB2182266A (en) * 1985-11-05 1987-05-13 Gary Skone Roberts Cleaning of spraying apparatus
US20010045471A1 (en) * 1999-03-10 2001-11-29 Thompson David J. Sprayer with reverse flush capability

Family Cites Families (3)

* 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
DE3927880C2 (de) * 1989-08-23 1998-07-30 Behr Industrieanlagen Verfahren und Anlage zum Beschichten von Gegenständen mit häufig wechselndem Farbmaterial
DE19903827C1 (de) * 1999-02-02 2001-03-22 Daimler Chrysler Ag System zur Überwachung einer Farbstoff-Fördereinrichtung einer Lackieranlage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1485255A (en) * 1975-03-03 1977-09-08 Champion Spark Plug Co Powder coating colour change method and apparatus
GB2182266A (en) * 1985-11-05 1987-05-13 Gary Skone Roberts Cleaning of spraying apparatus
US20010045471A1 (en) * 1999-03-10 2001-11-29 Thompson David J. Sprayer with reverse flush capability

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007067558A1 (fr) * 2005-12-08 2007-06-14 Diversified Dynamics Corporation Ensemble pompe électrique réversible et rouleau à peinture
CN103157571A (zh) * 2011-12-08 2013-06-19 天津利福特电梯部件有限公司 对重块双色喷漆自动线流涂设备
CN112657962A (zh) * 2020-12-24 2021-04-16 天津港石油化工码头有限公司 一种氮气清管扫线工艺
CN112657962B (zh) * 2020-12-24 2022-04-01 天津港石油化工码头有限公司 一种氮气清管扫线工艺

Also Published As

Publication number Publication date
EP1516676A3 (fr) 2005-07-13
ES2286548T3 (es) 2007-12-01
DE10342643A1 (de) 2005-04-14
DE502004003593D1 (de) 2007-06-06
EP1516676B1 (fr) 2007-04-25

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