Blade Tip Airflow Control for Clean Sheet Cutting
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Solution Overview
Problem
Cutting residue from sheet-shaped workpieces can adhere to the blade of a cutting apparatus and potentially fall onto the workpiece, causing defects in the product, especially when cutting materials like electrolyte membranes.
Innovation Solution
A cutting apparatus with a blade that moves up and down between pressing portions, utilizing a blow gas to remove cutting residue from the blade surface and a suction mechanism to prevent residue from adhering to the workpiece, by maintaining a high-speed gas flow directed away from the cutting area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a blade cuts a sheet-shaped workpiece, then the workpiece is divided into desired shapes, but cutting residue adheres to the blade and may fall on the workpiece causing defects
Solution Approach 1:
The blow part supplies blow gas to the blade surface before cutting residue can adhere to it, preventing residue accumulation proactively. The suction part is positioned to immediately suction away any residue that may have adhered during the cutting process, ensuring the blade remains clean for the next cut.
Solution Approach 2:
Gas flow serves as an intermediary medium between the blade and cutting residue. The blow gas creates a protective gas layer that prevents residue from directly adhering to the blade surface, while the suction gas flow carries residue away, mediating the interaction between blade and contaminant.
2Ease of manufacture
If cutting residue adheres to the blade, then the blade becomes contaminated, but cleaning using gas is difficult when residue sticks into materials like electrolyte membranes
Solution Approach 1:
The system performs preliminary cleaning action during the cutting process itself, rather than attempting to clean residue after it has already adhered to the workpiece. The blow and suction parts operate continuously or periodically during cutting to prevent residue buildup, making cleaning much easier and more effective.
Solution Approach 2:
The cutting residue, which is normally a harmful contaminant, is converted into a removable particle by the gas flow system. The blow gas detaches residue from the blade surface, and the suction gas transports it away, transforming the cleaning challenge into a manageable particle removal process.
3Device complexity
If a simple cutting blade is used, then the device structure is simple, but cutting residue falls on the workpiece region causing defects
Solution Approach 1:
The blow part and suction part are integrated into the cutting apparatus as a unified residue management system. The blow gas supply mechanism and suction gas flow mechanism work together in coordination, merging prevention and removal functions into a single integrated system that maintains workpiece cleanliness without requiring separate complex subsystems.
Solution Approach 2:
The invention uses pneumatic methods (gas flow) to address the cutting residue problem, replacing what would otherwise require complex mechanical cleaning mechanisms. The blow gas and suction gas system provides an elegant pneumatic solution that maintains simplicity while effectively preventing residue contamination.
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 cutting residue from adhering to the blade and falling onto the workpiece, ensuring high-quality cutting results by continuously removing residue through controlled gas flow and suction.
Implementation Method 1
a blow part configured to supply a blow gas to a region around the distal end of the blade portion through a gap between the first blade surface and the first workpiece pressing portion
Implementation Method 2
a suction part configured to suck a gas in the region around the distal end of the blade portion through a gap between the second blade surface and the second workpiece pressing portion
Data Source
AI summary
A cutting apparatus including a placing table, a first and second workpiece pressing portions, and a blade portion moving up and down in thickness direction of the workpiece between the first and second workpiece pressing portions. The blade portion includes a first blade surface extending upward from a tip of the blade portion and facing the first workpiece pressing portion, and a second blade surface extending along the second workpiece pressing portion from the tip of the blade portion. The cutting apparatus includes a blow part supplying blow gas to a region around the tip of the blade portion through a gap between the first blade surface and the first workpiece pressing portion, and a suction part sucking gas in the region around the tip of the blade portion through a gap between the second blade surface and the second workpiece pressing portion.