Spray Coating Carriage Assembly with Curved Track Ends
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Solution Overview
Problem
Existing spray coating devices are limited in their ability to apply both single and multi-component coatings in a desired pattern while moving over a substrate, particularly failing to prevent puddling and excessive build-up at the end of the spray path.
Innovation Solution
A portable spray coating apparatus with a non-linear carriage assembly that includes a track with upwardly curving end sections, allowing the carriage to move perpendicular to its travel path and apply coatings at varying thicknesses, minimizing impact and preventing puddling by spraying on an extended area during reversal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the carriage moves quickly to apply coating on extended area during reversal, then productivity is improved, but coating uniformity deteriorates due to varying thickness
Solution Approach 1:
The track is designed with different sections having different functions: the first and second end sections are curved to enable the carriage to move upward and spray coating on an extended area during reversal, while the third central section is linear to provide stable coating application. This local differentiation allows the system to maintain both high productivity during reversal and uniform coating thickness in the central spraying zone.
2Device complexity
If the carriage stops suddenly at the end of spray path, then the reciprocating motion is simplified, but puddling and excessive build-up occur
Solution Approach 1:
The track incorporates curved first and second end sections that guide the carriage to move upward in an arc during reversal. This curvature allows the carriage to smoothly transition from the linear central section to the return path without sudden stops or impacts, thereby preventing puddling and excessive coating build-up while maintaining simple reciprocating motion control.
3Device complexity
If the carriage applies coating at constant thickness, then the spray control is simplified, but the ability to create desired patterns and overlapping sections is limited
Solution Approach 1:
The track design adds a vertical dimension to the carriage motion by incorporating curved end sections that elevate the carriage during reversal. This dimensional change enables the spray device to apply coating on an extended area at different positions, creating overlapping sections and desired patterns while maintaining constant spray parameters, thus achieving pattern flexibility without complicating spray control.
Data Source
AI summary
A carriage assembly for a spray coating apparatus and a spray coating apparatus including the carriage assembly. The carriage assembly includes a carriage operatively connected to a track that is non-linear, which in some embodiments allows a coating to be applied at at least two different thicknesses.