Movable Table Laser Machining for Sheet Workpieces
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Solution Overview
Problem
Conventional laser machining apparatuses require a large installation area to prevent damage to flexible printed boards during machining, due to the need for sufficient distance between the machining apparatus and the roll-out and take-up units.
Innovation Solution
The apparatus includes a movable table that can move in X- and Y-plane directions, with the supply-side and take-up side roll holding devices disposed on one side of the machining area, reducing the need for free loops and overall installation space, and incorporating fewer components for easier control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sufficient distance is maintained between the machining apparatus and the roll-out/take-up units, then the sheet-like workpiece is protected from damage during machining, but the overall installation area becomes large
Solution Approach 1:
The patent combines the roll holding devices with the movable table structure, integrating functions that were previously separate. The supply-side and take-up side rolls are positioned on the movable table itself, eliminating the need for separate stationary roll-out and take-up units, thus reducing installation area while maintaining workpiece protection through controlled free loops
Solution Approach 2:
The patent repositions the roll holding devices from a linear horizontal arrangement to a configuration where they are disposed on the movable table in plane directions orthogonal to the laser beam. This spatial reorganization allows the free loops to be formed within the table's movement plane rather than requiring extended linear distance, effectively utilizing dimensional space to reduce footprint
2Device complexity
If fewer components are used in the apparatus, then the installation area is reduced and control is simplified, but the ability to maintain sufficient free loops for damage prevention may be compromised
Solution Approach 1:
The movable table serves multiple functions: it positions the workpiece for machining, holds the supply and take-up rolls, and manages the free loops to protect the workpiece. By making the table multi-functional, the patent eliminates separate components while maintaining all necessary protective functions through the integrated roll holding devices
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
This configuration reduces the overall installation area and allows for more efficient use of space while maintaining control over the machining process, eliminating the need for excessive space due to free loops and simplifying the apparatus's design.
Implementation Method 1
laser beam irradiating means installed on a bed and capable of irradiating a laser beam
Implementation Method 2
irradiating the laser beam thereto by the laser beam irradiating means while relatively moving the movable table and the laser beam irradiating means during machining
Data Source
AI summary
There is provided a laser machining apparatus for sheet-like workpieces that allows an installation area to be reduced and that may be readily controlled. The laser machining apparatus includes a Y-table movable in X- and Y-plane directions orthogonal to a laser beam irradiated from an fθ lens, a supply reel for holding a supply-side roll which contains a sheet-like workpiece, and a take-up reel for holding a take-up side roll containing a finished sheet-like workpiece. Machining is carried out by fixing the sheet-like workpiece in the machining area on the movable table and by irradiating the laser beam while moving the movable table relative to the laser beam. At least one of the supply reel and the take-up reel is disposed on the movable table.