Laser Irradiation Start Position Control for Rotating Objects
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Solution Overview
Problem
Existing laser marking systems and machining methods struggle with accuracy and efficiency when dealing with objects that rotate or have varying conveyance speeds, leading to inconsistencies in laser irradiation.
Innovation Solution
A laser irradiation apparatus and method that incorporates rotation detectors and position detectors to accurately adjust the start position of laser irradiation based on the detected rotation and position of the object, using a laser device, beam expanders, mirrors, and synchronous detectors to synchronize laser emission with object movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional laser marking systems are used without rotation detection, then the system structure remains simple, but the machining accuracy deteriorates when objects rotate or have varying conveyance speeds
Solution Approach 1:
The rotation detector detects the rotation angle of the object before the laser irradiation occurs. The control unit calculates the corrected start position based on the detected rotation angle in advance, so that when the laser irradiation begins, the object is already at the correct position. This preliminary detection and calculation resolves the technical contradiction by ensuring machining accuracy without requiring complex real-time adjustment mechanisms during irradiation.
Solution Approach 2:
The rotation detector continuously monitors the rotation angle of the object and provides feedback to the control unit. The control unit uses this feedback to dynamically adjust the start position of the laser irradiation, creating a closed-loop control system. This feedback mechanism ensures that even if the object rotates during conveyance, the laser irradiation remains accurate, resolving the contradiction between simplicity and precision.
2Manufacturing precision
If the start position is fixed without rotation adjustment, then the control system remains simple, but the laser irradiation accuracy deteriorates on rotating objects
Solution Approach 1:
The control unit calculates the corrected start position based on the detected rotation angle before the laser irradiation begins. This preliminary calculation adjusts for the rotation effect in advance, ensuring that when the laser starts irradiating, the object is at the correct position. This approach improves start position accuracy without requiring complex real-time control mechanisms during the irradiation process.
Solution Approach 2:
Instead of using complex mechanical adjustment mechanisms to physically reposition the laser or object, the patent substitutes a computational approach. The control unit uses software algorithms to calculate the corrected start position based on rotation angle data, replacing mechanical complexity with intelligent control. This resolves the contradiction by achieving high precision through calculation rather than mechanical adjustment.
3Manufacturing precision
If laser irradiation is performed without considering object rotation, then the processing speed remains high, but the machining quality deteriorates on rotating objects
Solution Approach 1:
The rotation detector and control unit perform detection and calculation of the corrected start position before the laser irradiation begins. This preliminary action ensures that the machining quality is high from the start of irradiation without requiring time-consuming adjustments during the process. The system maintains high processing speed while ensuring machining quality through advance preparation.
Solution Approach 2:
The real-time feedback from the rotation detector allows the control unit to adjust the start position dynamically without stopping the conveyance or laser process. This continuous feedback mechanism ensures high machining quality while maintaining fast processing speed, as the adjustment happens seamlessly during normal operation without adding significant time loss.
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 precise laser irradiation on rotating objects, improving accuracy and productivity by adjusting the start position based on rotation and position information, thus enhancing the machining process.
Implementation Method 1
a rotation detector configured to detect rotation of the object to obtain rotation information of the object
Implementation Method 2
a laser device configured to emit a laser beam to an object conveyed in a conveyance direction
Data Source
AI summary
A laser irradiation apparatus includes a laser source configured to emit a laser beam to an object that is being conveyed to allow the object to be irradiated with the laser beam; a rotation detector configured to detect rotation of the object to obtain information on the rotation of the object; and circuitry configured to control laser irradiation onto the object based on the information on the rotation of the object.