Portable Laser Head Shielding for Uniform Coating Removal
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Solution Overview
Problem
Existing laser irradiation systems are cumbersome, inefficient, and prone to damage when used on structures with complex shapes or limited space, and they struggle to uniformly remove coatings over wide areas without generating environmental waste or damaging the underlying material.
Innovation Solution
A portable, small-sized laser head with a shielding member and circular scanning capability, combined with a suction system, allows efficient coating removal and collection, protecting the optical system from debris and enabling uniform treatment across large surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional laser treatment apparatus with manipulator arm is used, then coating removal capability is achieved, but portability and adaptability to complex structures are reduced
Solution Approach 1:
The patent extracts the laser irradiation function from the complex manipulator arm system, creating a standalone portable laser head that can be directly held and operated. This separates the essential coating removal function from the cumbersome positioning mechanism, enabling adaptability to complex structures while reducing device complexity.
Solution Approach 2:
The patent replaces the mechanical manipulator arm system with a handheld laser head design. The operator's hand becomes the positioning mechanism, eliminating the need for complex mechanical arms and joints, thereby improving portability and adaptability to difficult-to-reach areas of complex structures.
2Productivity
If laser beam is irradiated without shielding, then coating removal efficiency is high, but optical system damage from adhering debris increases
Solution Approach 1:
The patent introduces a shielding member as an intermediary between the laser optical system and the coating removal zone. This shield prevents debris from reaching and damaging the optical components while allowing the laser beam to continue effectively removing coating, thus protecting reliability without compromising productivity.
3Manufacturing precision
If linear scanning method is used, then irradiation position control is achieved, but uniformity of coating removal over wide areas is reduced
Solution Approach 1:
The patent employs circular scanning motion instead of linear scanning. By moving the laser beam in circular trajectories, the system achieves more uniform energy distribution across wide areas, eliminating the edge effects and non-uniformity inherent in linear scanning methods while maintaining operational simplicity.
4Ease of operation
If portable laser head is used, then portability and ease of operation are improved, but productivity for wide area treatment is reduced
Solution Approach 1:
The patent transitions from one-dimensional linear scanning to two-dimensional circular scanning. This dimensional change allows the portable laser head to cover wide areas more efficiently by utilizing rotational motion, thereby maintaining portability while significantly improving productivity for large surface treatments.
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
The system effectively removes coatings on complex structures with reduced environmental impact and cost, ensuring uniformity and safety by preventing debris adhesion and damage to the optical system.
Implementation Method 1
a laser oscillating unit 1 and a portable laser head 3 for focusing the laser beam transmitted via the fiber 2 and irradiating it to a surface 20 of a structure... a coating on the surface 20 of the structure can be removed by laser ablation
Implementation Method 2
a laser beam 30... for focusing the laser beam transmitted via the fiber 2 and irradiating it to a surface 20 of a structure
Implementation Method 3
a suctioning means 31 for collecting a removed matter 60 generated from the irradiation point of the laser beam 30
Data Source
AI summary
In order to provide a laser irradiation system, a method for removing a coating, and a laser irradiation apparatus capable of efficiently removing a coating on a surface of a structure and recovering the removed substance using suction, a laser head (3) is configured from an optical system (4) for irradiating laser beam (30), a suctioning means (33) for suctioning removed matter (60) produced at the point where the laser beam (30) is directed, and an attachment (5) configured to be capable of abutting a surface (20) of a structure, the optical system (4) being operated to scan the irradiation point of the laser beam so as to draw a trajectory of a circle having a radius r1 around the optical axis of the laser beam (30) on a surface substantially perpendicular to the optical axis.