Laser Pattern Scanning Layout for High-Speed Container Marking
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Solution Overview
Problem
Existing pattern forming technologies face challenges in maintaining productivity while ensuring good visibility and mechanical strength of base materials, particularly in high-speed conveying processes and in effectively removing labels from containers for recycling purposes.
Innovation Solution
A pattern forming apparatus with multiple emitting units that scan laser light in both the conveying direction and an intersecting direction, allowing for increased pattern formation time and parallel processing of multiple base materials, ensuring productivity and mechanical strength without degrading the base material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the conveying speed of the base material is reduced to ensure pattern formation time, then the pattern can be formed properly, but the productivity of forming the pattern is reduced
Solution Approach 1:
The patent introduces a second scanning dimension (intersecting direction) in addition to the conventional single scanning direction (conveying direction). This two-dimensional scanning approach allows the laser beam to cover the base material more efficiently, reducing the required pattern formation time and enabling higher conveying speeds without sacrificing pattern quality.
Solution Approach 2:
By implementing dual scanning units operating simultaneously in different directions, the system eliminates idle time and ensures continuous useful action. The first scanning unit scans in the conveying direction while the second scanning unit scans in the intersecting direction, maintaining constant laser-beam utilization and maximizing productivity.
2Manufacturing precision
If a carbon dioxide gas laser is used to directly form patterns on the surface of a container, then patterns can be formed, but the visibility of patterns and mechanical strength of the base material are compromised
Solution Approach 1:
The patent changes the fundamental parameter of laser wavelength from carbon dioxide laser (infrared) to blue/violet laser (visible light range). This parameter change enables pattern formation with high visibility while using lower energy density that preserves the mechanical strength of the base material. The blue/violet laser achieves sufficient contrast for visible patterns without the excessive thermal effects that would compromise material integrity.
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 apparatus ensures high productivity and good visibility of patterns on base materials while maintaining mechanical strength, enabling efficient label removal and recycling by optimizing the scanning process.
Implementation Method 1
a first light source unit configured to emit a first laser light; a second light source unit configured to emit a second laser light
Data Source
AI summary
A pattern forming apparatus for forming a pattern by emitting a scanning light onto a plurality of base materials conveyed in a predetermined conveying direction, includes a plurality of emitting units including a first emitting unit and a second emitting unit. The first emitting unit includes a first light source unit to emit a first laser light; a first conveying direction light scanning unit to scan the first laser light in the predetermined conveying direction; a first intersecting direction light scanning unit to scan a scanning light, scanned by the first conveying direction light scanning unit, in an intersecting direction that intersects the predetermined conveying direction. Further, there is a first light emitting unit to emit a first scanning light, scanned by the first intersecting direction light scanning unit, onto a base material among the plurality of base materials.