EP3140437A1 - Anlage und verfahren zum beschichten von gegenständen - Google Patents
Anlage und verfahren zum beschichten von gegenständenInfo
- Publication number
- EP3140437A1 EP3140437A1 EP15717801.3A EP15717801A EP3140437A1 EP 3140437 A1 EP3140437 A1 EP 3140437A1 EP 15717801 A EP15717801 A EP 15717801A EP 3140437 A1 EP3140437 A1 EP 3140437A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating liquid
- pump
- dip tank
- coating
- filtrate
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
- C25D13/24—Regeneration of process liquids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/12—Electrophoretic coating characterised by the process characterised by the article coated
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
Definitions
- the invention relates to a system for coating, in particular for electrodeposition, of objects, in particular of vehicle wheels, having a) a dip tank which is filled with a coating liquid into which the objects can be immersed.
- the invention relates to an associated method for coating objects.
- the dip coating in particular the electrodeposition coating, is a widely used method in the automotive industry for coating objects, in particular for painting vehicle bodies and parts thereof, such as the vehicle wheels.
- the objects are immersed in a dip tank in a conductive, mostly aqueous coating liquid and set by applying a field of stress between the immersed objects and in the tympanum arranged electrodes of the coating process in motion.
- the deposition of the lacquer on the objects takes place essentially via an electrochemical conversion of binders and lacquer pigments due to the current flow between the electrodes and the electrodes.
- ATL anodic
- KTL cathodic
- the composition of the coating liquid changes locally at the objects, for example due to the discharge of the color pigments adhering to the coated objects from the coating liquid.
- the physical and chemical parameters of the coating liquid are kept homogeneous throughout the dip tank.
- the parameters of the coating liquid are then set in total via further cycles. For example, the provision of a filtration circuit is known, with which continuously a small partial flow. the coating liquid of solid constituents, such as the paint pigments, is freed. This so-called retentate is added again to the coating liquid after appropriate treatment.
- the filtrate is used, for example after adjusting the pH, for rinsing the painted objects. Furthermore, it is known to provide a heat exchanger ice-skating with which the heat, which is introduced into the coating liquid by the electrical power of the electrocoating, can be dissipated again.
- Pump outlet wherein the pump inlet is at least indirectly connected to the dip tank, at least one circulation outlet for the coating liquid arranged in the dip tank, and a filtration device whose inlet is connected to the pump outlet of the pump and which has a retentate connection and a filtrate connection, wherein the retentate port is connected to the at least one recirculation outlet in the plunge pool.
- the inventor has recognized that, in particular in systems for coating smaller objects such as vehicle wheels, it is not necessary to provide separate flow circuits for the filtration and for the circulation of the coating liquid. Because at. a sufficiently large one - -
- the deposited retentate can take over the function of circulating the coating liquid in the dip tank when it is fed via Umicalzauslässe in the dip tank. In this way, the recycled retentate generates the necessary bath movements of the coating liquid in the dip tank.
- Such circulating outlets are known as such and preferably have injector nozzles with which, in particular in the bottom area of the immersion basin, turbulences are generated which agitate settled solid constituents of the coating liquid. Since, according to the invention, only one combined recirculation and filtration circuit is required instead of a plurality of separate circuits or subcircuits, the overall result is a simplification of the system.
- an overflow basin in which the coating liquid can overflow from the dip tank, in which case the pump inlet of the pump is connected to the overflow basin.
- the coating liquid is extracted indirectly from immersion tanks, which is due to a resulting overflow flow in the.
- Overflow pool Accumulate contamination of the coating liquid.
- the pump of the recirculation and filtration circuit is designed as a submersible pump and arranged in the overflow basin.
- This has the advantage over the prior art that with respect to the sealing of the pump less to no requirements must be met. Because usually normal pump of Umisselznikanks due to the aggressive nature of the coating liquid only schanane shaft seals can be used so that on the seals of the pump escaping coating liquid must be removed in a separate separate circuit.
- the retentate port of the filter device and the circulation outlet in the dip tank are preferably connected to one another without the interposition of a buffer reservoir.
- the combined recirculation and filtration circuit can be operated with only one pump.
- the filtration device may comprise an ultrafiltration module, whereby a sufficiently purified filtrate is discharged.
- the circulation and filtration circuit can comprise a temperature control device, preferably arranged upstream of the filtration device, in particular a heat exchanger, with which heat can be withdrawn or supplied to the coating liquid. In this way, can be dispensed with a separate heat exchanger circuit for the coating liquid, as it is commonly used in the prior art.
- a temperature control device preferably arranged upstream of the filtration device, in particular a heat exchanger, with which heat can be withdrawn or supplied to the coating liquid.
- a separate heat exchanger circuit for the coating liquid as it is commonly used in the prior art.
- directly via a arranged in the dip tank tempering, z As a cooling coil, the coating liquid heat withdrawn or supplied.
- an additional counter container circuit may be provided, which comprises a sealless pump, in particular a diaphragm pump, with which the coating liquid can be promoted in particular for maintenance work on the dip tank in a counter container and back again.
- the filtrate connection of the filtration device is at least indirectly connected to a purging basin in which the articles are stored after - -
- a buffer memory can be interposed, in which filtrate obtained at the filtrate connection is kept ready for cleaning purposes, in particular for manual cleaning purposes of the system.
- Figure 1 is a schematic representation of a system for
- Figure 2 is a schematic representation of a modified
- Figure 1 shows a generally designated 10 for conditioning cataphoretic 'dip painting of vehicle wheels 12th
- the plant 10 comprises a dip tank 14, which with a - -
- Electrodeposition paint 16 is filled as a coating liquid.
- the vehicle wheels 12 to be painted are lowered into the dip tank 14 with the aid of a delivery device 18 which is only partially shown, and thereby partially or completely immersed in the electrodeposition coating 16, which is composed essentially of demineralized water, binders and paint pigments and other known additives.
- a delivery device 18 which is only partially shown, and thereby partially or completely immersed in the electrodeposition coating 16, which is composed essentially of demineralized water, binders and paint pigments and other known additives.
- an overflow basin 22 is provided here in the form of a channel running along the dip tank 14, into which excess electrocoating 16, as indicated by the flow arrow 24, can overflow.
- excess electrocoating 16 as indicated by the flow arrow 24
- conversion products of the electrolytic varnish 16 and other impurities are entrained, whereby a foam crown 26 is formed in the overflow basin 22 above the electrolytic varnish 16.
- the circulating and filtration circuit 30 first comprises a pump, which is designed here as an immersion pump 34 arranged in the overflow basin 22 with an inlet 35. From the outlet 37, a line 36 leads to the primary side of a heat exchanger 38, the secondary side is connected via lines 40, 42 to a not shown cooling system. - -
- a line 44 to a filter device 46, more precisely to a pre-filter 48 of the filter device 46.
- a pre-filter 48 leads a further line 50 to an ultrafiltration module 52 of the filter device 46, which a retentate port 54 and a filtrate port 56 as outlets of the filter device .46 has.
- the retentate port 54 of the filter device 46 at which a solid component enriched retentate is discharged, is connected via a line 58 to one or more arranged in the dip tank 14, Umisselzauslässen 60, which are each provided with an injector 62.
- the Umisselzauslässe 60 are arranged and dimensioned so that with appropriate dimensioning of the retentate throughput (which is essentially controlled by the capacity of the submersible pump 34) in the plunge pool 14 sufficient Umisselzströmung 32 is generated to prevent settling of solid components and homogenization of
- the filtrate connection 56 of the filter device 46 on which essentially the aqueous constituents of the electrocoat material 16 are delivered as filtrate, is, in contrast, connected via a line 64 to a sink 66.
- the vehicle wheels are rinsed 12 process after the 'coating, for example, to remove non-adherent, excess paint.
- the rinse water 68 (contaminated filtrate), which is then partially enriched again with coating pigments, is circulated in the sink 66 via a further submersible pump 70 arranged in the sink 66 and associated circulating outlets 60.
- a line 74 leads from the overflow outlet 72 arranged in the upper region of the sink 66 to the overflow basin 22 of the dip tank 14, in order to prevent overflow.
- a dialysis circuit 76 (only partially sketched) cooperating with the electrodes 20 is also provided.
- This comprises tubular exchange membranes 78, which surround the most rod-shaped electrodes 20 coaxially. The interior of the exchange membranes 78 is then flushed with dialysis fluid during the coating process in order to reduce the acid content.
- the dip tank 14 is connected via a counter container circuit 80 with a counter container 82, which can absorb all the electrocoating 16 from the dip tank 14 and thus allows the plunge pool 14 for maintenance purposes or the like to empty completely without having to dispose of the electrocoating 16
- the countercontainer circuit 80 comprises for this purpose a valve arrangement 84 and a diaphragm pump 86, wherein in a first position of the valve arrangement 84 the electrocoat 16 can be conveyed by the diaphragm pump 86 from the plunge pool 14 into the countercontainer 82.
- the diaphragm pump 86 In a second position of the valve assembly, the diaphragm pump 86, along with circulation outlets 60 disposed in the counter reservoir 82, may be used to create a recirculation flow 88 in the counter reservoir 82 during maintenance operations. In a third position of the valve arrangement 84, the same diaphragm pump 86 can be used to return the electrodeposition coating 16 to the immersion basin 14. - -
- FIG. 2 shows a slightly modified variant of the system 10, in which the filtrate connection 56 of the filter device 46 is not connected directly to the sink 66. Instead, there leads the outgoing from the filtrate port 56 line 64 to a buffer tank 90, in which the filtrate is provided, for example, for manual cleaning purposes of the system 10.
- a further line 92 at the bottom of the buffer container 92 then leads analogously to the exemplary embodiment of FIG. 1 into the sink 66.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014006795.5A DE102014006795B4 (de) | 2014-05-09 | 2014-05-09 | Anlage und Verfahren zum Beschichten von Gegenständen |
| PCT/EP2015/000714 WO2015169413A1 (de) | 2014-05-09 | 2015-04-01 | Anlage und verfahren zum beschichten von gegenständen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3140437A1 true EP3140437A1 (de) | 2017-03-15 |
Family
ID=52997389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15717801.3A Withdrawn EP3140437A1 (de) | 2014-05-09 | 2015-04-01 | Anlage und verfahren zum beschichten von gegenständen |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US20170137957A1 (de) |
| EP (1) | EP3140437A1 (de) |
| DE (1) | DE102014006795B4 (de) |
| WO (1) | WO2015169413A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016005371A1 (de) | 2016-05-04 | 2017-11-09 | Eisenmann Se | Vorrichtung und Verfahren zur Messung von mindestens einem Parameter einer Behandlungsflüssigkeit in einer Oberflächenbehandlungsanlage |
| US11352292B2 (en) * | 2019-01-30 | 2022-06-07 | Ppg Industries Ohio, Inc. | Method for preparing optical articles with multi-layer antireflective coatings |
| DE102023129933A1 (de) * | 2023-10-30 | 2025-04-30 | Dürr Systems Ag | Behandlungsanlage zum Behandeln von Werkstücken und Verfahren zum Behandeln von Werkstücken |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3705847A (en) * | 1970-09-21 | 1972-12-12 | Weyerhaeuser Co | Method for forming a uniform continuous web of paper |
| US4026775A (en) * | 1974-03-06 | 1977-05-31 | Kaiser Aluminum & Chemical Corporation | Electrocoating bath temperature control |
| HU171591B (hu) * | 1975-05-08 | 1978-02-28 | Hajtomuevek Es Festoberendeze | Ehlektricheskij apparat dlja okraski okunaniem |
| DE2744218A1 (de) * | 1977-09-30 | 1979-04-05 | Timm Von Hofmann | Verfahren zum austausch und erneuern von elektrolyten, chemischen prozessloesungen und spuelwaessern in galvanisiertrommeln |
| DE2919305C2 (de) * | 1979-05-14 | 1981-11-12 | Huras, Hans, 6437 Kirchheim | Verfahren zum Betrieb einer Elektrophorese-Lackieranlage und Vorrichtung zur Durhführung des Verfahrens |
| DE3230660C1 (de) * | 1982-08-02 | 1984-01-26 | Basf Farben + Fasern Ag, 2000 Hamburg | Verfahren und Vorrichtung zur Durchfuehrung einer Elektrotauchlackierung sowie Anwendung |
| US6139708A (en) * | 1987-08-08 | 2000-10-31 | Nissan Motor Co., Ltd. | Dip surface-treatment system and method of dip surface-treatment using same |
| US5009758A (en) * | 1988-08-16 | 1991-04-23 | Mazda Motor Manufacturing (Usa) Corp. | Closed noncontinuous electrodeposition painting system |
| DE3843544A1 (de) * | 1988-12-23 | 1990-06-28 | Sep Tech Studien | Verfahren und vorrichtung zur elektrophoretischen tauchlackierung von kleinteilen und schuettguetern |
| DE9203653U1 (de) * | 1992-03-18 | 1992-07-30 | Eisenmann Maschinenbau KG (Komplementär: Eisenmann-Stiftung), 7030 Böblingen | Mikrofiltrationsanlage für hochabrasive Medien |
| DE19741096C2 (de) * | 1997-09-18 | 2002-01-31 | Wurster Gerd | Verfahren zum Lackieren von Teilen und Lackieranlage |
| DE10132349B4 (de) * | 2001-07-04 | 2006-08-17 | Eisenmann Maschinenbau Gmbh & Co. Kg | Verfahren und Anlage zur kataphoretischen Tauchlackierung von Gegenständen |
| DE102006019042A1 (de) * | 2006-04-25 | 2007-10-31 | Hestermann, Gerhard | Verfahren zur Verminderung von Oberflächenstörungen an in Elektrotauchlackieranlagen aufgetragenen Lackschichten |
| DE202006006600U1 (de) * | 2006-04-25 | 2007-09-06 | Hestermann, Gerhard | Einrichtung zur Umwälzung, Filtrierung und Temperierung von in Elektrotauchlackieranlagen aufzutragenden Lacken |
| DE102010054932A1 (de) * | 2010-12-17 | 2011-08-25 | Daimler AG, 70327 | Anlage und Vorrichtung zum Lackieren eines Objekts |
-
2014
- 2014-05-09 DE DE102014006795.5A patent/DE102014006795B4/de not_active Expired - Fee Related
-
2015
- 2015-04-01 US US15/309,682 patent/US20170137957A1/en not_active Abandoned
- 2015-04-01 WO PCT/EP2015/000714 patent/WO2015169413A1/de not_active Ceased
- 2015-04-01 EP EP15717801.3A patent/EP3140437A1/de not_active Withdrawn
-
2019
- 2019-07-16 US US16/512,520 patent/US20190338437A1/en not_active Abandoned
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2015169413A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014006795A1 (de) | 2015-11-12 |
| US20170137957A1 (en) | 2017-05-18 |
| DE102014006795B4 (de) | 2018-02-15 |
| US20190338437A1 (en) | 2019-11-07 |
| WO2015169413A1 (de) | 2015-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3236545A1 (de) | Verfahren zum elektroplattieren und vorrichtung zur durchfuehrung des verfahrens | |
| DE102014006795B4 (de) | Anlage und Verfahren zum Beschichten von Gegenständen | |
| DE3230660C1 (de) | Verfahren und Vorrichtung zur Durchfuehrung einer Elektrotauchlackierung sowie Anwendung | |
| DE202018102369U1 (de) | Vorrichtung zur Aufbereitung von Badewasser mit einer Druckfilteranlage | |
| DE102012218495A1 (de) | Verfahren und Vorrichtung zur kathodischen Tauchlackierung | |
| DE3625171C1 (de) | Verfahren und Vorrichtung zur Tauchbeschichtung von Objekten mit fluessigen Beschichtungsmaterialien mit anschliessender Spuelung unter Verwendung von Ultrafiltrat | |
| DE102014001799B3 (de) | Anlage zur Beschichtung von Gegenständen | |
| DE102018115289A1 (de) | Tauchlackieranlage und Verfahren zum Betreiben einer solchen | |
| DE10132349B4 (de) | Verfahren und Anlage zur kataphoretischen Tauchlackierung von Gegenständen | |
| EP1617953A1 (de) | Elektrotauchlackierverfahren und durchlaufanlage zu seiner durchführung | |
| DE4036716C1 (de) | ||
| EP2910669B1 (de) | Galvanische Beschichtungsanlage und Verfahren zu deren Betrieb | |
| DE10235117B3 (de) | Anlage zur kataphoretischen Tauchlackierung von Gegenständen | |
| WO2010060408A2 (de) | Beizverfahren und beizanlage | |
| DE3022679C2 (de) | ||
| DE2534918C3 (de) | Vorrichtung zum Elektrotauchlackieren | |
| DE102019005334A1 (de) | Dialysezelle für eine Tauchbadlackierung für einen Kraftwagenrohbau | |
| DE2847172B2 (de) | Verfahren und Vorrichtung zum Beschichten eines Formkörpers durch elektrophoretische Abscheidung | |
| DE2319968A1 (de) | Elektrophoretisches beschichtungsverfahren und vorrichtung zu dessen durchfuehrung | |
| DE10105806A1 (de) | Verfahren und Anlage zur elektrophoretischen, insbesondere kataphoretischen, Tauchlackierung von Gegenständen | |
| DE102019117084A1 (de) | Reinigungsanlage und Reinigungsverfahren insbesondere für Behandlungsanlagen in der Lackiertechnik | |
| DE2549963B1 (de) | Verfahren zum entkeimenden behandeln von waessrigen lackdispersionen fuer die elektrotauchlackierung | |
| AT404434B (de) | Verfahren zum aufbereiten eines für eine elektrophoretische lackierung eingesetzten elektrolyten | |
| DE102005049444A1 (de) | Elektrotauchlackierungsvorrichtung und Verfahren zur Gewinnung und Nutzung einer Lackierungsflüssigkeit in der entsprechenden Elektrotauchlackierungsvorrichtung | |
| DE10313205A1 (de) | Verfahren zur Behandlung eines Substrats in einem Tauchbad |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20161026 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20180123 |
|
| 19U | Interruption of proceedings before grant |
Effective date: 20190731 |
|
| 19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 20200803 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20210209 |