Vehicle Opaque Coating Microperforation With Rectilinear Laser Paths

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Solution Overview

Problem

Existing methods for producing microperforations on vehicle parts using laser treatment are time-consuming and complex due to the use of circular or curved laser trajectories, leading to long cycle times and intricate programming.

Innovation Solution

A method involving the use of rectilinear laser beam trajectories for producing microperforations in opaque coatings on vehicle parts, simplifying the irradiation path and reducing cycle time by using rectilinear successive lines.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If circular or curved laser trajectories are used to produce microperforations, then the microperforations can be substantially circular in shape allowing light transmission, but the cycle time per microperforation becomes quite long and the programming becomes complex

Engineering Contradiction:

Improvemicroperforation shapeVSAvoidcycle time

Core Design Contradiction:

ShapeVSProductivity

Solution Approach 1:

Instead of using circular or curved laser trajectories to create circular microperforations, the patent inverts the approach by using rectilinear (straight line) laser trajectories. This inversion of the conventional circular path into straight lines dramatically reduces the cycle time per microperforation while still achieving the desired light transmission effect through the microperforations.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent changes the trajectory parameter from circular/curved paths to rectilinear (straight line) paths. This parameter change in the laser beam movement pattern simplifies the irradiation process, reduces programming complexity, and significantly decreases the cycle time required to produce each microperforation.

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If circular or curved laser trajectories are used to produce microperforations, then the desired visual effect is achieved, but the programming of the robot carrying the laser becomes quite complex leading to heavy programming files

Engineering Contradiction:

Improvevisual effectVSAvoidprogramming complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent inverts the conventional circular scanning approach into rectilinear (straight line) trajectories. This inversion dramatically simplifies the programming requirements for the robot carrying the laser, reducing heavy programming files into simpler, more manageable instruction sets while maintaining the ability to achieve the desired visual effect.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

By changing the trajectory parameter from circular/curved to rectilinear paths, the patent simplifies the programming complexity. Straight line trajectories require fewer computational calculations and simpler path planning algorithms compared to circular paths, thereby reducing the overall device complexity and programming burden.

Inventive Principle:

Principle #35Parameter changes

3Manufacturing precision

If a large number of microperforations are made on a panel to obtain the desired visual effect, then light transmission is improved, but the total cycle time to obtain the final body panel becomes long

Engineering Contradiction:

Improvevisual effectVSAvoidtotal cycle time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent applies the inversion principle by replacing circular laser trajectories with rectilinear ones. This enables the efficient production of large numbers of microperforations across the panel surface, achieving the desired visual effect with significantly reduced total cycle time compared to conventional circular scanning methods.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

By changing the laser trajectory parameter to rectilinear paths, the patent enables faster processing speeds when producing large numbers of microperforations. The simplified straight line paths allow for more efficient coverage of the panel surface, reducing the total time required to achieve the desired density and distribution of microperforations for the visual effect.

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach significantly reduces manufacturing time and simplifies programming, enabling faster production of vehicle parts with desired light transmission properties while maintaining aesthetic appearance.

Implementation Method 1

producing a set of microperforations in the opaque coating by removing the opaque coating using a laser beam locally irradiating the coating

Methodology Applied

Scientific EffectLaser ablation: Laser Ablation

Data Source

PatentUS20250205735A1Method for manufacturing a transparent or translucent vehicle part

Publication Date: 2025.06.26 OPMOBILITY SE

AI summary

A method for manufacturing a motor vehicle body part, the method includes depositing at least one opaque coating on at least part of one face of a main body of the body part, the main body being made of transparent or translucent plastic, and producing a set of microperforations in the opaque coating by removing the opaque coating using a laser beam locally irradiating the opaque coating, an irradiation trajectory of the laser beam consisting solely of substantially rectilinear successive trajectory lines.