Painting method and painting facility for producing a decorative coating

Patent metadata

Field	Value
Publication number	US-10933443-B2
Application number	US-201515323806-A
Country	US
Kind code	B2
Filing date	Jul 3, 2015
Priority date	Jul 4, 2014
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A method for painting a component, in particular for painting a motor vehicle body component, with a decorative layer is provided. The decorative layer may be a decorative strip, a graphic element, a contrast surface or a pattern. The method includes applying a base coat layer, applying a decorative layer, which is within a decorative region with a limited surface area, to the component, and drying a limited drying region of the component, which drying region comprises at least part of the decorative region.

First claim

The invention claimed is:

1. A method for painting a component and providing a decorative layer, the component having an exterior, the method comprising:
applying a base coat layer onto the exterior of the component;
applying a paint layer onto the exterior of the component;
drying the exterior of the component before application of the decorative layer,
applying the decorative layer onto the component in an overspray free manner without the use of a mask, the decorative layer defining a limited area decorative region smaller than the exterior region of the component;
drying a limited portion of the component using a robot having a drying unit at a drying region, the drying region at least partially encompassing the decorative layer, the drying region being smaller than the exterior region of the component, the drying region covering merely a peripheral edge of the decorative region, the drying region after drying the limited portion having a lower residual moisture level than a remainder of the decorative region; and
applying a clear coat layer onto the paint layer and the decorative layer, including applying the clear coat layer to the drying region having the lower residual moisture level than the remainder of the decorative region and applying the clear coat layer to the remainder of the decorative region;
wherein the drying region covering the peripheral edge of the decorative region prevents running of the decorative region at the peripheral edge.

2. The method according to claim 1 , wherein the drying region and the decorative region coincide areally.

3. The method according to claim 1 , wherein the decorative region is larger than the drying region.

4. The method according to claim 1 , wherein the paint layer is dried in an intermediate drying process to a first residual moisture level.

5. The method according to claim 1 , wherein the drying of the limited portion of the component at the drying region includes, irradiating the component by electron bombardment.

6. The method according to claim 1 , wherein the component is dried with a drying unit, and the drying unit is convex.

7. The method according to claim 6 , wherein the drying unit is moved together with an applicator along a painting path over the component.

8. The method according to claim 7 , wherein, while moving together on the painting path, the drying unit dries the component and the applicator applies the decorative layer.

9. The method according to claim 7 , wherein the drying unit dries the component in a first movement over the painting path and the applicator applies the decorative layer in a second movement over the painting path.

10. The method according to claim 7 , wherein the applicator applies the decorative layer in a first movement over the painting path and the drying unit dries the component in a second movement over the painting path.

11. The method according to claim 1 wherein the decorative layer is dried with a diffuser.

12. The method according to claim 1 wherein the drying of the limited portion is through radiation and a shield masks the exterior surface to only allow radiation to dry the decorative region.

13. The method according to claim 1 wherein the drying is directed through a diffuser.

14. The method according to claim 1 wherein the base coat is intermediate dried with air drying have a temperature between 60 Celsius and 80 Celsius.

15. A method for painting a component and providing a decorative layer, the component having an exterior, the method comprising:
applying a base coat layer onto the exterior of the component;
applying a paint layer onto the exterior of the component;
drying in a first drying operation only a drying region of the exterior of the component with a robot prior to an application of the decorative layer, the drying region defining a limited area smaller than the exterior of the component, the first drying operation using a robot, the first drying operation leaving a first residual moisture level;
applying the decorative layer onto the component in an overspray free manner without the use of a mask at the drying region, the decorative layer defining a limited area decorative region smaller than the exterior region of the component, the decorative layer being applied by the robot;
drying a limited portion of the component in a second drying operation, the limited portion covering merely a peripheral edge of the decorative region, the second drying operation leaving a second residual moisture level at the peripheral edge of the decorative region that is lower the first residual moisture level and lower than a moisture level at a remainder of the decorative region; and
applying a clear coat layer onto the paint layer, the peripheral edge of the decorative region of the decorative layer having the second residual moisture level, and the remainder of the decorative region having the moisture level.

16. The method according to claim 15 wherein the base coat is dried.

17. The method according to claim 15 , wherein the drying region and the decorative region coincide areally.

18. The method according to claim 15 , wherein the decorative region is larger than the drying region.

Assignees

• Duerr Systems Ag

Inventors

• Fritz Hans-Georg
• Wöhr Benjamin
• Kleiner Marcus
• Beyl Timo
• Bubek Moritz
• Eichhorn Jens
• Wolf Udo

Classifications

• B05D5/061 Primary

  Special surface effect · CPC title

• B05D7/534 Primary

  the first layer being let to dry at least partially before applying the second layer (B05D7/538 takes precedence) · CPC title

• B05D3/065

  After-treatment · CPC title

• B05D3/0254

  After-treatment · CPC title

• B05B13/0431

  with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to three-dimensional [3D] surfaces · CPC title