Laser Head and Belt Conveyor Motion Control to Prevent Melting
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Solution Overview
Problem
Conventional laser processing machines risk melting the belt conveyor due to high laser power density when the laser head and belt conveyor move in synchronization, as the laser beam spot diameter increases and power density decreases upon reaching the conveyor.
Innovation Solution
A control unit is implemented to manage the operations of the laser head and belt conveyor, ensuring they do not match in speed and direction during laser processing, employing strategies like temporary stops, speed changes, and direction reversals of the belt conveyor to prevent melting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the laser head and belt conveyor move in synchronization with matching speed and direction, then the laser processing efficiency is improved, but the belt conveyor is at risk of being melted by the high laser power density
Solution Approach 1:
The control unit continuously monitors the positions and speeds of both the laser head and belt conveyor, comparing their motion parameters in real-time to detect synchronization conditions. When matching speed and direction are detected, the system automatically adjusts the belt conveyor speed to prevent laser beam concentration, thereby resolving the contradiction between processing efficiency and equipment safety through closed-loop feedback control
Solution Approach 2:
The system dynamically changes the operating parameters of the belt conveyor by adjusting its speed based on the laser head's motion state. When the laser head moves at a certain speed and direction that could cause synchronization, the control unit modifies the belt conveyor's speed parameter to break the synchronization condition, thus preventing laser beam melting while maintaining optimal processing conditions
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
Effectively prevents the belt conveyor from being melted by the laser beam, maintaining its integrity and operational efficiency during processing.
Implementation Method 1
a laser head configured to irradiate a workpiece with laser beam
Implementation Method 2
receives scrap or a processed article such as a product that drops downward with the laser processing
Data Source
AI summary
Provided is a laser processing machine including a laser head capable of irradiating a workpiece with laser beam, a belt conveyor provided away in an irradiation direction of the laser beam, and a control unit configured to control operations of the laser head and the belt conveyor. The laser head is configured to be movable along at least a rotating direction of the belt conveyor. The control unit is configured to control, in a case where a moving direction and a moving speed of the laser head match the rotating direction and a rotating speed of the belt conveyor during the irradiation with the laser beam, the operation of at least one of the laser head and the belt conveyor in order to avoid the matching.