Spray Edger Blade Adjusts to Prevent Overspray Drift
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Solution Overview
Problem
Existing spray painting devices face challenges in preventing overspray, leading to increased costs and delays due to rework and repair, as higher air pressure for finer atomization increases the risk of spray drift onto non-target areas.
Innovation Solution
A spray edger device with a planar blade member, a V-shaped frame member, and a collar member that connects to the barrel portion of a material application apparatus, allowing adjustable positioning to prevent overspray by ensuring the forward lateral edge of the blade member contacts the target surface, thereby controlling the spray pattern and reducing drift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If higher air pressure is used for spray painting, then finer atomization and improved coating quality are achieved, but spray drift and overspray onto non-target areas increase
Solution Approach 1:
A blade member is introduced as an intermediary component between the spray nozzle and the target surface. The blade physically blocks and redirects the spray pattern, confining the atomized paint to the intended target area while preventing drift onto non-target areas, thus resolving the overspray problem without sacrificing coating quality
Solution Approach 2:
The harmful spray drift is extracted or separated from the main spray stream by using the blade to redirect only the excess spray away from non-target areas, allowing the core spray function to maintain high atomization quality while isolating the harmful drift component
2Object-generated harmful factors
If lower air pressure is used to prevent spray scattering, then overspray is reduced, but atomization quality and coating finish deteriorate
Solution Approach 1:
The blade serves as a mediator that allows the use of lower air pressure by compensating for reduced atomization through physical confinement of the spray, directing even the coarser spray particles onto the target surface effectively without causing drift
3Productivity
If spray painting is performed without blade protection, then application speed is maintained, but rework and repair costs increase due to overspray
Solution Approach 1:
The blade is positioned in advance to prevent overspray before it occurs, acting as a preliminary protective measure that eliminates the need for subsequent rework and repair, thus maintaining application speed while preventing future losses
Data Source
AI summary
A spray edger device, which is suitable for use with a material application apparatus, said spray edger device includes a planar blade member, a substantially V-shaped frame member for supporting the planar blade member, and a collar member configured for moveably connecting the planar blade member to a barrel portion of a material application apparatus.