Laser Scrap Removal via Inclined Gas Deflector
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Solution Overview
Problem
Traditional CNC tools are inadequate for machining thin and rigid cover glass used in touch panels, as they require contact, whereas laser processing, which is non-contact, has become a more suitable alternative.
Innovation Solution
A laser processing device comprising a laser emitter, optical processor, and a scrap removal device with a gas deflector and gas source, where the gas flow surrounds the optical channel and is inclined near the outlet, enhancing the removal of scraps during the processing of thin and rigid cover glass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional CNC tools are used for machining cover glass, then contact-based precision machining can be achieved, but the tool cannot process thin and rigid cover glass due to contact requirements
Solution Approach 1:
The patent replaces the traditional mechanical CNC tool system with a laser processing system. The laser beam processes the cover glass without physical contact, enabling machining of thin and rigid materials that cannot withstand contact tools. The laser emitter, optical processor, and gas deflector work together to achieve non-contact precision machining.
2Adaptability or versatility
If laser processing is used for non-contact machining, then thin and rigid cover glass can be processed, but scraps remain on the workpiece surface
Solution Approach 1:
The patent introduces a gas deflector system that directs gas flow along the looped processing path to blow scraps off the workpiece surface. The gas channel is positioned to surround the optical channel, and the gas flow follows the laser beam's path, effectively removing processing debris without contacting the workpiece.
Solution Approach 2:
The gas flow acts as an intermediary between the laser processing and the workpiece surface. It mediates the removal of scraps by creating a fluid barrier that carries debris away from the processing zone, preventing scraps from adhering to the workpiece.
3Adaptability or versatility
If laser processing is used for cover glass machining, then non-contact processing is achieved, but processing time is extended
Solution Approach 1:
The gas flow is pre-positioned along the looped processing path before the laser beam completes its circuit. This preliminary positioning of the gas stream ensures that scraps are continuously removed throughout the processing cycle, preventing reprocessing needs and reducing total processing time.
Solution Approach 2:
The looped gas channel design ensures continuous gas flow along the entire processing path, maintaining constant scrap removal throughout the laser's circuit. This continuous action prevents interruptions and maintains steady processing speed, reducing overall processing time.
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 solution significantly reduces processing time and eliminates scraps on the workpiece surface, improving the efficiency and quality of laser processing for drilling operations.
Implementation Method 1
a gas flow to flow into the looped gas channel, and the gas flow is guided by the looped gas channel
Data Source
AI summary
A scrap removal device for a laser processing device includes a gas deflector having an optical channel; a looped gas channel; and a looped gas outlet. The looped gas outlet is connected to the looped gas channel, the optical channel is configured for a laser beam to transmit through, the looped gas channel surrounds the optical channel, and a section of the looped gas channel close to the looped gas outlet is inclined. The scrap removal device further includes a gas source furnished on the gas deflector and in communication with the looped gas channel for providing a gas flow to flow into the looped gas channel. The gas flow is joined with the laser beam transmitting along a looped processing path when flowing out of the gas deflector through the looped gas channel and the looped gas outlet.