Laser Cleaning of Metallic Bar Stock for High-Speed Screw Production
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Solution Overview
Problem
Existing methods for cleaning metallic bar stock surfaces, such as chemical, ultrasound, and high-pressure fluid cleaning, are inefficient at high speeds, require significant space, and generate environmental waste, making them unsuitable for immediate further processing.
Innovation Solution
A method using laser beams directed onto the bar stock surface to remove contaminants, with adjustable laser optics and a suction device to capture removed material, allowing for efficient and space-saving cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical or high-pressure fluid cleaning methods are used, then cleaning effectiveness is achieved, but the process requires significant space and generates environmental waste
Solution Approach 1:
The patent replaces mechanical cleaning systems (high-pressure fluid equipment, chemical treatment facilities) with a laser-based cleaning system. The laser beam directly ablates contaminants from the bar stock surface without requiring large volumes of cleaning agents or complex fluid handling infrastructure, thereby significantly reducing the space required for the cleaning station while maintaining effective contaminant removal
Solution Approach 2:
The invention changes the fundamental parameter of the cleaning process from chemical/mechanical to optical/thermal energy. By using laser radiation with specific wavelengths and intensities, the system achieves contaminant removal through controlled ablation rather than chemical dissolution or mechanical force, enabling a more compact system design that eliminates the need for large chemical storage and disposal facilities
2Reliability
If traditional cleaning methods are used, then contaminants are removed, but the process is inefficient at high movement speeds
Solution Approach 1:
The patent replaces slow mechanical or chemical cleaning processes with laser ablation, which can effectively remove contaminants at high linear speeds. The laser beam can be rapidly scanned across the bar stock surface or the bar stock can move quickly through a focused laser zone, achieving both thorough contaminant removal and high processing speed that is impossible with traditional methods
Solution Approach 2:
The invention employs periodic or pulsed laser irradiation to remove contaminants in successive stages as the bar stock moves through the cleaning station. Multiple laser beams may be activated in sequence or simultaneously at different positions along the bar stock, ensuring continuous and effective cleaning even at high movement speeds where continuous irradiation would be difficult to maintain
3Reliability
If chemical cleaning agents are used, then surface cleaning is achieved, but environmental waste is generated
Solution Approach 1:
The patent replaces chemical cleaning agents with laser radiation to remove contaminants. The laser beam vaporizes or ablates contaminants directly from the bar stock surface, converting them into gaseous or particulate forms that can be evacuated without requiring chemical neutralization or disposal systems. This eliminates the generation of harmful chemical waste while maintaining effective surface cleaning
Solution Approach 2:
The invention converts the harmful contaminants that would otherwise require chemical treatment into a form that can be easily removed and disposed of. By using laser ablation, contaminants are vaporized or fragmented into fine particles that can be efficiently captured by vacuum systems, transforming a potential environmental hazard into a manageable waste stream without requiring harmful chemical agents
4Reliability
If conventional cleaning stations are used, then cleaning is performed, but further processing cannot begin immediately
Solution Approach 1:
The patent replaces multi-step mechanical and chemical cleaning processes with a single-pass laser cleaning operation. The laser beam can clean the bar stock surface in real-time as it moves through the station, eliminating the need for subsequent drying, rinsing, or neutralization steps required by traditional methods. This allows immediate transition to the next processing operation without waiting for additional cleaning cycles to complete
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
Laser cleaning achieves effective contamination removal at high speeds without chemicals, reduces environmental impact, and enables immediate further processing of the bar stock.
Implementation Method 1
at least one laser beam is directed onto the surface of the bar stock to be cleaned, which removes contaminants present on the surface
Implementation Method 2
Removed contaminants are preferably vacuumed away
Data Source
Figure 1~3
Figure 4
AI summary
The present invention relates to a method for surface cleaning of a metallic bar stock (2) extending in a longitudinal direction, in which the bar stock (2) is moved longitudinally through a cleaning station (1). It is characterized in that, in the cleaning station (1), at least one laser beam (9) is directed onto the surface of the bar stock (2) to be cleaned, removing contaminants present on the surface. Furthermore, the invention relates to a cleaning station (1) and a screw manufacturing system (12).