EP2379233A1 - Verfahren zum beschichten eines bauteils - Google Patents
Verfahren zum beschichten eines bauteilsInfo
- Publication number
- EP2379233A1 EP2379233A1 EP09801940A EP09801940A EP2379233A1 EP 2379233 A1 EP2379233 A1 EP 2379233A1 EP 09801940 A EP09801940 A EP 09801940A EP 09801940 A EP09801940 A EP 09801940A EP 2379233 A1 EP2379233 A1 EP 2379233A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- exposure chamber
- component
- exposure
- light
- 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- Withdrawn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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0466—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being a non-reacting gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0486—Operating the coating or treatment in a controlled atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying goods
- F26B2210/12—Vehicle bodies, e.g. after being painted
Definitions
- the invention relates to a method for coating a component, in which the component is provided with at least one curable by exposure to UV light coating layer or coating, which is exposed in a substantially spherical or ellipsoidal interior having exposure chamber with UV light.
- the invention relates to a coating device.
- UV-curable coatings or fabrics are used, which are curable by means of UV radiation.
- the UV curing can take place in specially designed exposure chambers.
- exposure chambers are known which ensure the curing of UV-curable coatings under protective gas due to their design in a very good manner, as disclosed for example in DE 2008 014 378 A1.
- the object of the present invention is to provide a method for coating a component, in which the component is provided with at least one coating layer or coating which can be cured by exposure to UV light and which has an exposure chamber with UV light in an essentially spherical or ellipsoidal interior space is provided to provide, which is time-saving and user-friendly and where cost can be saved.
- the at least one coating layer or painting installation in a coating space which at the same time comprises the exposure chamber for curing the applied paint, is applied to the component.
- the UV light is advantageous for the UV light to be produced by UV lamps distributed spherically over the inner wall of the exposure chamber, the light of which is focused concentrically on a center or a longitudinal axis of the exposure chamber. This allows an ideal exposure and thus curing of the cured coating or coating layer on the component. Further advantageous embodiments of an exposure chamber applicable in the invention are described in DE 10 2008 014 378 A1.
- At least one coating layer is applied to the component in the exposure chamber. So the spatial integration of coating or painting and curing is guaranteed even better way. The corresponding components now do not even have to be transported into the exposure chamber after the application of the coating, since they are already in the same.
- the component is surrounded by an inert gas during the coating and / or during the application of UV light.
- an inert gas is introduced into the exposure chamber. The lack of inhibitory effect of oxygen thus causes in the exposure chamber a good acceleration and improvement of radiation curing.
- an inert gas i. a gas which does not contain radical scavengers, in particular oxygen, is introduced. This allows coating and curing to occur in the same space under the same inert conditions. It creates a closed system, which is opened only in exceptional situations, or for loading and removal with components.
- helium is used as the inert gas.
- the low density of He can be used advantageously to simplify the lock technology significantly.
- the coating chamber and the exposure chamber are particularly preferably made gas-tight upwards, with the supply opening for the components lying below. In a particularly advantageous embodiment no lock technology needs to be applied.
- the coating and the curing can take place spatially integrated in a separate, helium-filled coating space or a helium-filled exposure chamber.
- the corresponding premises generally remain filled with the inert gas, preferably helium, and are only freed from the inert gas or, in particular, helium in special situations, for example during maintenance work.
- a container above the exposure chamber and / or the coating space is optionally used for storing the inert gas.
- the inert gas such as helium, may be directed into the container to temporarily free the exposure chamber and / or coating space from the inert gas.
- the UV lamps or UV light mirror, or the walls of the exposure chamber not with paint from the painting process, which is not deposited on the component (so-called. Overspray). Therefore, the painting process is adjusted so that the overspray is directed away from the lamps, mirrors and walls. For this purpose, the flow of the inert gas is passed in a suitable manner.
- a laminar flow of the inert gas optionally flows through at least one permeable space boundary of the coating space and / or the exposure chamber. It is essential that during the painting process one along the Component arranged laminar flow forms. This laminar flow, in particular on the component surface, is used for receiving and discharging overspray. More preferably, the laminar flow of inert gas is directed in the direction of the lower opening of the coating chamber. The routing of overspray from the UV lamps, mirrors, and walls of the exposure chamber may be assisted by a variety of inert gas jets in the walls of the exposure or coating space, respectively.
- the overspray recording is spatially integrated, cost-saving and time-saving feasible.
- At least one coating layer is applied by means of a painting robot.
- the Teflon layer prevents both damage to the painting robot, for example, by the UV radiation or paint splashes as well as a reduction of UV radiation, as reflected by the mirroring a reflection of UV radiation is achieved.
- At least one painting robot is positioned between the UV lamps during the exposure of the UV light in the interior of the exposure chamber.
- at least one painting robot is removed from the exposure chamber during the application of UV light.
- At least one coating layer or paint is applied by means of a coating bell.
- the Lackierglocke is operated by means of a steering gas.
- helium is used as a steering gas to operate the paint bell, the inert environment remains in an improved manner during the coating in an improved manner.
- helium as inert gas can thus be used to operate the Lackierglocke the same gas.
- a component which can be used in motor vehicle construction is preferably coated, with a motor vehicle body being particularly preferably coated.
- the invention relates to a coating device for carrying out a method with at least one of the features described above.
- the coating device is configured such that a plurality of methods as described above can be performed in parallel in respective UV pulse coating modules.
- the process according to the invention can be carried out in an improved manner to a large extent in a cost-saving and time-saving manner, or the corresponding coating apparatus according to the invention can be used.
- At least two UV pulse coating modules are connected to one another by means of a conveying means.
- Fig. 1 is a schematic sectional side view of a
- Coating device for carrying out a method for coating a component, wherein the component is provided with at least one UV-curable coating layer, which is exposed to UV light in an exposure chamber having a substantially spherical or ellipsoidal interior, the coating layer being exposed in a coating space comprising the exposure chamber is applied to the component;
- Fig. 2 is a simplified view of a schematic sectioned
- A) a coating layer is applied in the coating space on the component and is exposed in a higher exposure chamber
- the at least one coating layer is applied laterally of the exposure chamber within the coating space on the component
- the at least one coating layer is applied on both sides laterally of the exposure chamber within the coating space on the component, wherein only the exposure chamber is rendered inert with helium;
- FIG. 3 shows a perspective view of an exposure chamber for carrying out a method for coating a component, the exposure chamber being exposed from above for viewing the exposure chamber (A) and a schematic side perspective view (B) for an exposure chamber for carrying out a method for Coating two components, which is designed as a truncated Pentakisdodekaeder;
- FIG. 4 shows a schematic cross section through an exposure chamber of a
- Coating device for carrying out a method for coating a component, wherein a laminar flow of an inert gas is shown graphically;
- FIG. 5 shows a side view of a coating apparatus for carrying out a method for coating a component, wherein a coating layer in a coating space, which comprises the exposure chamber, is applied to the component, wherein a plurality of methods can be performed in parallel in respective UV pulse coating modules.
- FIG. 1 shows a coating device 10 which has a coating chamber 12 and an exposure chamber 14.
- a component 16 is coated. In the illustrated embodiment, it is in the component 16 to a motor vehicle body 17. It may of course be any other component 16, more preferably, however, the invention relates to usable in the automotive industry components 16 such as the illustrated motor vehicle body 17. Dascapsul Component 16 provided with at least one UV-curable coating layer.
- the exposure chamber 14 has in the present embodiment, a substantially ellipsoidal interior 16, but theoretically this may also be spherical. Within the ellipsoidal interior 18, the motor vehicle body 17 is exposed to UV light. At least one coating layer in the coating space 12, in which the exposure chamber 14 is located, is applied to the motor vehicle body 17. As a result, application of the lacquer layer and subsequent UV curing are spatially integrated with each other. In the embodiment shown in FIG. 1, the coating layer is even applied to the motor vehicle body 17 in the exposure chamber 14.
- the component 16 is surrounded with an inert gas 20 during the coating and / or exposure to UV light.
- the inert gas 20 is in the exposure chamber 14, in this case it is helium. It has been shown that the helium content is best about 99%. This ensures that the oxygen content is less than 1%, which ensures a better process. Due to the low oxygen content of air, the oxygen content at the preferred helium concentration of about 99% is even less than about 0.3%.
- the helium remains preferably during the entire process and also during the replacement, for example, the motor vehicle body 17 against another component 16 and another motor vehicle body 17 constant and continuously in the exposure chamber 14.
- a container 22, which is arranged above the exposure chamber 14 is optionally used for storing the inert gas 20.
- this can be done for the maintenance of the coating device 10.
- a counter container 22 in the present embodiment, a helium counter container 22, which through a closable flow opening 24 with the interior 18 of the exposure chamber 14th connected is.
- the coating device 10 comprises pumping devices, not shown, by means of which the inert gas 20 can be pumped into the counter container 22.
- the coating apparatus 10 also has a lifter 26.
- the lifter 26 By means of the lifter 26 to be coated components 16, in the present embodiment, therefore, the motor vehicle bodies 17, lifted from a lower floor 28 in the exposure chamber 14.
- the motor vehicle bodies 17 are coated and the coating cured by means of UV light.
- the painting of the motor vehicle bodies 17 can take place, for example, by means of painting robots. It can common paint bells, which are operated by means of a steering gas, are used.
- the painting robots are either moved into intended parking positions or completely removed from the exposure chamber 14.
- revealable flaps are provided by which the painting robots are optionally removed from the exposure chamber 14 during the process. Since helium is used as the inert gas 20 in the present embodiment, it is advantageous in this case to use helium as a steering gas for the Lackierglocke.
- both MonoCure systems and DuaICure systems can be used.
- the MonoCure system free-radical polymerization of the applied coating layer, initiated by UV light, occurs. Due to the very good exposure properties in the exposure chamber 14, in which the UV light is generated by spherically distributed over the inner wall of the exposure chamber 14 arranged UV lamps whose light is focused concentrically on a center or a longitudinal axis of the exposure chamber 14, are MonoCure method very good feasible.
- the helium can be heated by a heater 30.
- the temperature of the inert gas 20 or of the helium can be regulated by means of the heating device 30.
- any desired temperature can be set within the scope of the technically possible for carrying out a method.
- Multilayer painting and curing takes place in the same coating space 12 or exposure chamber 14 filled with an inertizing gas 20. This includes both the applications for applying so-called base layers, as well as the so-called clear-coat layers.
- the order and number of application of the respective layers and the respective exposure phases in the exposure chamber 14 can be freely varied in the method as desired by the user.
- Preferred are methods in which the quality level of the gradient is controlled by means of sensors or other measuring elements.
- the hardening processes can be controlled as required in terms of dimension and timing.
- Corresponding exposure periods and / or exposure intensities can be controlled in the method and individually varied.
- the motor vehicle body 17 is cleaned after lowering the vehicle body 17 by means of the lifter 26, for example, robots carrying sword brushes. This is not shown in Fig. 1.
- the overspray deposition can also take place in the exposure chamber 14, which is filled with the inertizing gas 20.
- the applications are possible on the outside as well as inside, ie at respective seam connections of, for example, doors or the like to motor vehicle bodies 17, which are poorly accessible in pure outdoor application.
- doors or flaps of the motor vehicle body 17 are actuated during the application in order to be able to carry out the respective internal applications by means of the painting robots.
- UV curing can be done with sensor monitoring to ensure optimal UV exposure time.
- FIGS. 2A to 2D various variants for carrying out the method for coating a component 16 are shown.
- coating apparatuses 10 having a coating space 12, an exposure chamber 14 and a container 22 for receiving helium in given cases can be seen.
- the coating space 12 is now completely filled with the inert gas 20, in this case helium.
- the component 16, in this case again a motor vehicle body 17, is now coated in the coating chamber 12 filled with the inert gas 20 with at least one coating layer.
- the curing by applying UV light in the substantially ellipsoidal exposure chamber 14 takes place in the same coating space 12 but above the position where the vehicle body 17 is coated.
- the body 17 is transported by means of illustrated simplified lift 26. Also shown in FIG. 2B is a coating space 12 which is completely filled with the inert gas 20. However, the application of the coating layers takes place in the same way as the curing by means of UV light in the exposure chamber 14.
- the motor vehicle body 17 is coated on the side of the exposure chamber 14, but in the same coating space 12.
- the motor vehicle bodies 17 to be coated are supplied to the exposure chamber 12, which is completely filled with the inert gas 20, that is to say helium, from the side by means of conveying means 32 illustrated in a simplified manner. After the coating and / or the curing, the body 17 is transported by means of a lifter 26 illustrated in a simplified manner into the lower floor 28.
- the exposure chamber 14 can be seen in a perspective view.
- Spherical UV lamps are arranged in the interior 18, the light of which is directed concentrically to a center 34 on which the lacquering and subsequent UV curing take place.
- FIG. 3B shows from outside the elliptical shape of an exposure chamber according to the invention.
- the exposure chamber 14 is formed as a truncated Pentakisdodekaeder in a compressed ellipsoidal shape.
- the features of the exposure chamber 14 are described for example in DE 2008 014 378 A1.
- the exposure can also be made with UV medium pressure lamps.
- the exposure chamber 14 is bounded inside by means of UV-reflecting Teflon plates.
- UV lamps are arranged on the Teflon plates. This is not shown in Fig. 3.
- the UV lamps are operated, for example in the pulse mode, which includes, for example, a pulse operation of about 2 seconds.
- the energy output can be 15kW, for example.
- FIG. 4 shows how the overspray separation is carried out by means of a laminar flow 36.
- a helium flow is used as flow 36.
- helium as the inert gas 20 and at the same time as the gas 20 for generating the laminar flow 36 ensures that the inert, process-favorable atmosphere in the exposure chamber 14 is maintained throughout. The process thus takes place in a closed system.
- the overspray absorption can be done very well by means of the laminar helium flow.
- a space boundary 37 of the exposure chamber 14 is interrupted at an upper or lower area 38, 40, and thus by the helium flow 36 can be flowed through.
- the space boundary 37 may also be interrupted at all other possible points for flowing through a laminar flow 36. It is important that a closed circuit through corresponding lines, which are not shown in Fig. 4, guaranteed. This minimizes losses and protects the environment.
- FIG. 5 shows a coating device 10 in which a plurality of UV pulse coating modules 42 are shown side by side.
- respective UV pulse coating modules 42 are connected to one another by means of a conveying means 32.
- a method as described above is feasible. As a result, the process can be automated on a large scale and carried out inexpensively.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009005079A DE102009005079B4 (de) | 2009-01-16 | 2009-01-16 | Verfahren zum Beschichten eines Bauteils sowie Beschichtungsvorrichtung |
| PCT/EP2009/009112 WO2010088941A1 (de) | 2009-01-16 | 2009-12-18 | Verfahren zum beschichten eines bauteils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2379233A1 true EP2379233A1 (de) | 2011-10-26 |
Family
ID=42062347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09801940A Withdrawn EP2379233A1 (de) | 2009-01-16 | 2009-12-18 | Verfahren zum beschichten eines bauteils |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8652585B2 (de) |
| EP (1) | EP2379233A1 (de) |
| DE (1) | DE102009005079B4 (de) |
| WO (1) | WO2010088941A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE536336C2 (sv) * | 2011-12-20 | 2013-08-27 | Pivab Ab | Exponeringskammare för härdning av strålningshärdbara beläggningar |
| SE1351251A1 (sv) * | 2013-10-22 | 2015-04-23 | Caraway Ab | Anordning för härdning och/eller torkning av objekt vid ytbehandling |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2236398A (en) | 1939-04-17 | 1941-03-25 | New Wrinkle Inc | Apparatus for drying finishes |
| US2767297A (en) * | 1954-04-22 | 1956-10-16 | Charles F Benson | Radiant energy oven |
| US4621187A (en) * | 1985-02-01 | 1986-11-04 | Petro Jr William A | Paint spraying and curing booth |
| US5445324A (en) * | 1993-01-27 | 1995-08-29 | The United States Of America As Represented By The United States Department Of Energy | Pressurized feed-injection spray-forming apparatus |
| US5769703A (en) * | 1996-01-23 | 1998-06-23 | Conlin; Douglas | Paint spray booth with protective curtain |
| DE50114835D1 (de) * | 2001-01-15 | 2009-05-28 | Bolin Heatex Technology Gmbh | Belüftungsvorrichtung für eine Spritzkabine eines Lackierbetriebs |
| DE10255419A1 (de) * | 2002-11-28 | 2004-06-09 | Air Liquide Gmbh | UV-Härtung von Lacken mit Inertisierung |
| WO2005011878A2 (de) * | 2003-07-24 | 2005-02-10 | Eisenmann Maschinenbau Gmbh & Co. Kg | Vorrichtung zur aushärtung einer aus einem material, das unter elektromagnetischer strahlung aushärtet, insbesondere aus einem uv-lack oder aus einem thermisch aushärtenden lack, bestehenden beschichtung eines gegenstandes |
| DE10354165B3 (de) | 2003-11-19 | 2004-11-04 | EISENMANN Maschinenbau KG (Komplementär: Eisenmann-Stiftung) | Vorrichtung und Verfahren zur Aushärtung einer Beschichtung in einem Schutzgas |
| DE202005020745U1 (de) * | 2005-09-01 | 2006-10-19 | Semo-Tec Lackier- Und Trocknungstechnik Gmbh | Transportable Beschichtungskabine in Modulbauweise |
| DE102005050371B4 (de) * | 2005-10-20 | 2012-08-16 | Sturm Maschinenbau Gmbh | Anlage und Verfahren zum Strahlungshärten einer Beschichtung eines Werkstückes unter Schutzgas |
| ES2556171T3 (es) * | 2006-05-12 | 2016-01-13 | Dürr Systems GmbH | Instalación de revestimiento y procedimiento de funcionamiento correspondiente |
| DE102007012897A1 (de) | 2007-03-17 | 2007-11-29 | Daimlerchrysler Ag | UV-Belichtungsraum |
| US20080271669A1 (en) * | 2007-03-27 | 2008-11-06 | Butterworth Industries, Inc. | Polymeric cover for robots having an increased total surface energy |
-
2009
- 2009-01-16 DE DE102009005079A patent/DE102009005079B4/de not_active Expired - Fee Related
- 2009-12-18 WO PCT/EP2009/009112 patent/WO2010088941A1/de not_active Ceased
- 2009-12-18 US US13/144,534 patent/US8652585B2/en not_active Expired - Fee Related
- 2009-12-18 EP EP09801940A patent/EP2379233A1/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010088941A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US8652585B2 (en) | 2014-02-18 |
| DE102009005079B4 (de) | 2013-10-24 |
| DE102009005079A1 (de) | 2010-07-22 |
| US20110274855A1 (en) | 2011-11-10 |
| WO2010088941A1 (de) | 2010-08-12 |
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