Wet Laser Cleaning with Auto-Focus and Liquid Dust Capture
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Solution Overview
Problem
Current laser cleaning methods using robot arms and semiconductor pump solid lasers are limited by restricted movement and focus adjustments, fail to effectively clean high surfaces, and do not adequately manage toxic dusts and sparks, posing safety risks to operators.
Innovation Solution
A wet laser cleaning apparatus with a machine base, laser cleaning module, shielding housing, and filtering device, utilizing an optical fiber laser knife device that automatically focuses and immerses the base material in liquid, capturing dusts and preventing sparks through a filtering system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a robot arm is used to hold and move the laser source, then the laser cleaning apparatus can be operated, but the moving height and speed are restricted and cannot achieve optimum cleaning effect on base materials with higher height
Solution Approach 1:
The patent replaces the robot arm mechanical system with an optical fiber laser knife device mounted on a three-axis positioning system (X, Y, Z directions). This substitution eliminates the mechanical constraints of robot arms, enabling unlimited movement range and optimized cleaning speed across the entire base material surface including high surfaces.
2Power
If a semiconductor pump solid laser source is used, then laser cleaning can be performed, but automatic focusing is not available and replacement and calibration of components is tedious and complicated
Solution Approach 1:
The patent replaces the semiconductor pump solid laser source with an optical fiber laser knife device. This substitution eliminates the complex laser resonant cavity structure, enables automatic focusing capability, and simplifies maintenance by removing the need for manual replacement and calibration of optical components.
3Productivity
If conventional laser cleaning is performed without liquid immersion, then the cleaning process is simpler, but toxic substances, heavy metal dusts and sparks are produced and cannot be collected effectively
Solution Approach 1:
The patent introduces liquid as an intermediary medium between the laser beam and the base material. This liquid medium suppresses the generation of toxic substances and heavy metal dusts during laser cleaning, and the filtering device collects and removes these harmful factors from the liquid, protecting operators from exposure.
4Device complexity
If conventional laser cleaning is performed without liquid immersion, then the apparatus structure is simpler, but sparks are produced and operators are exposed to dangerous working environment
Solution Approach 1:
The patent uses liquid as an intermediary that suppresses spark generation during laser cleaning. The shielding housing encloses the liquid immersion environment, containing any potential sparks and protecting operators from exposure to the dangerous working environment.
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
Enables efficient cleaning of high surfaces with automatic focus and effective dust management, reducing operator exposure to hazards and eliminating the need for complex laser resonant cavity replacements.
Implementation Method 1
the optical fiber laser knife device irradiates a surface of the base material to achieve an objective of cleaning the base material
Implementation Method 2
Dusts produced after the optical fiber laser knife device has irradiated the base material are stored in the liquid in the reservoir
Implementation Method 3
the filtering device filters the dusts from the liquid
Data Source
AI summary
A wet laser cleaning apparatus includes a machine base, a laser cleaning module, a shielding housing and a filtering device. A base material is placed in a reservoir of the machine base, into which a liquid is introduced through the filtering device. A control module drives first parallel axial track groups, a second parallel axial track group and a vertical axial track group to move an optical fiber laser knife device of the laser cleaning module to irradiate and clean the base material. A height sensor device and an orientation sensor device sense a position and a height of an object, so that the optical fiber laser knife device can automatically focus on the base material. Dusts produced after the optical fiber laser knife device has irradiated the base material are stored in the liquid, and the filtering device filters the dusts from the liquid.