Laser Plotter Table Extraction Layout for Fast Fume Removal
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Solution Overview
Problem
Existing laser plotters face limitations in exhaust gas management, particularly when processing large flat workpieces, as extraction methods either restrict mobility or fail to effectively remove gases due to bulky components and positioning constraints.
Innovation Solution
The laser plotter features an airtight processing table with an extraction channel below the support surface, parallel to it, which directs airflow to extraction openings, allowing for efficient gas removal without hindering carriage mobility and enabling integration of a large extraction system within the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If an extraction hose is arranged on the focusing unit, then exhaust gases can be extracted during laser processing, but the mobility and travel speed of the focusing unit are restricted
Solution Approach 1:
The extraction system is extracted from the moving focusing unit and relocated to the stationary processing table structure. The extraction openings are integrated into the processing table, allowing exhaust gas extraction without attaching hoses to the moving focusing unit, thereby eliminating the speed restriction.
Solution Approach 2:
The extraction approach transitions from a mobile extraction point (on the focusing unit) to a stationary extraction surface (the processing table). By creating extraction openings in the processing table and using the space between the workpiece and table for extraction, the system achieves exhaust removal without compromising carriage mobility.
2Object-generated harmful factors
If extraction pipes are arranged below the processing table, then exhaust gases can be extracted, but bulky additional parts are required and large workpieces cannot be processed
Solution Approach 1:
The processing table serves dual functions: as a support surface for workpieces and as an extraction surface with integrated openings. This multi-functionality allows the same structure to support both small and large workpieces while providing exhaust extraction capability, eliminating the need for separate bulky extraction pipes.
Solution Approach 2:
The extraction system utilizes the vertical space dimension between the workpiece bottom surface and the processing table. By directing airflow upward through extraction openings in the table, the system extracts exhaust gases without requiring extraction components that would interfere with large workpiece placement.
3Object-generated harmful factors
If a perforated plate or grid is used as the processing table, then exhaust gases can be extracted through the table, but the structure becomes less stable and more complex
Solution Approach 1:
The extraction function is merged with the processing table structure itself. Instead of using a separate perforated plate or grid, the extraction openings are integrated directly into the solid processing table, combining the support and extraction functions into a single unified structure that is both stable and functional.
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 design enhances exhaust gas management by ensuring effective and unobstructed airflow, allowing for faster processing speeds and integration of a comprehensive extraction system, while maintaining clear visibility and adaptability for various workpiece sizes.
Implementation Method 1
an extraction device for extracting the exhaust gases produced during the laser process by means of a generated air flow
Implementation Method 2
at least one irradiation source in the form of a laser, and a control unit for controlling the carriage, which is operated by means of preferably a belt drive, with a focusing unit arranged movably thereon, which is designed to deflect a laser beam in the direction of the workpiece
Data Source
AI summary
The invention relates to a laser plotter (2) for processing a job for cutting, engraving, marking and/or lettering a preferably flat workpiece (7), which plotter has at least one housing (3) with a preferably closable processing chamber (8) for positioning a workpiece (7) on a processing table (9), at least one irradiation source in the form of a laser (5,6), and a controller (13) for controlling the carriage (14), which is operated by means of preferably a belt drive, with a focusing unit (12) arranged movably thereon, which is designed to deflect a laser beam (10) in the direction of the workpiece (7), wherein an extraction device (1) for extracting the exhaust gases (25) produced during the laser process by generating an air flow (26) is arranged in the processing chamber (8) below the processing table (9), in particular beneath a support surface (27) of the processing table (9). The processing table (9) is designed in such a way that the support surface (27) of the processing table (9) is designed to extend over the entire surface and is in particular airtight, and that, in order to form an air stream (26), an extraction channel (27) is arranged below the support surface (27), preferably parallel to the support surface (27), which extraction channel ends in an exhaust opening (29), wherein the extraction channel (27) is connected via at least one extraction opening (28,29) to the processing chamber (8) for extracting the exhaust gases or vapors, respectively (25), produced during the laser process.