Method for laser carving of paint on an outer surface of a vehicle wheel

Patent metadata

Field	Value
Publication number	US-11738406-B2
Application number	US-202016910545-A
Country	US
Kind code	B2
Filing date	Jun 24, 2020
Priority date	Jul 11, 2019
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

A method for laser carving of paint on an outer surface of a vehicle wheel includes a step of priming: priming an outer surface of the wheel to form a painted surface; a step of laser carving: carving the primer from a selected area of the wheel by laser to remove the painted surface from the selected area, the selected area having an exposed area with metallic luster, and a step of fine-polish: polishing the outer surface of the wheel to form a fine-polished area at the exposed area. The painted surface on the wheel can be quickly removed to disclose a selected area with metallic luster, while the wheel is prevented from corrosion so as to reduce manufacturing cost and increase precision.

First claim

What is claimed is:

1. A method for laser carving of paint on an outer surface of a vehicle wheel, comprising:
a step of priming: applying a primer on an outer surface of the vehicle wheel to form a first layer or undercoat, and a color layer is applied on the primer and combined with the primer to obtain a colored painted surface;
a step of applying a protective paint to the painted surface of the vehicle wheel to form a first protective layer on the color layer which is located between the primer and the first protective layer;
a step of laser carving: carving a selected area of the primer from the vehicle wheel by laser to remove the painted surface from the selected area, the selected area having an exposed area with metallic luster, and being located on one of spokes of the vehicle wheel, the selected area of the painted surface being removed by way of carving to form patterns on the exposed area;
a step of fine-polish: polishing the outer surface of the vehicle wheel to form a fine-polished area at the exposed area; and
applying a protective paint to the outer surface of the vehicle wheel to form a second protective layer on the first protective layer, the fine polished face of the exposed area including the second protective layer formed thereon.

2. The method as claimed in claim 1 , wherein a step of rough polish is added before the step of priming and comprises:
cleaning and proceeding surface polish to the wheel to form a rough polished face on the outer surface of the vehicle wheel, the primer layer of the painted surface in the step of priming being applied to the rough polished face.

3. The method as claimed in claim 2 , wherein in the step of fine-polish, the exposed area that is formed in the selected area by way of laser carving and the rough polished face are exposed, the rough polished face of the exposed area is polished to transfer the rough polished face into the fine polished face, a surface roughness of the fine polished face is less than that of the rough polished face.

Assignees

• Jian Sin Ind Co Ltd
• Volvo Car Corp

Inventors

• Chang Ching Jui
• Kao Jui Lung
• Wang Yung Sheng
• Robertsson Viktor
• Andreen Andreas
• Zhao Juan

Classifications

• B23K26/355 Primary

  Texturing · CPC title

• B23K26/362 Primary

  Laser etching · CPC title

• B23K26/40

  taking account of the properties of the material involved · CPC title

• B23K26/702

  Auxiliary equipment · CPC title

• B44C1/228

  by laser radiation · CPC title