Coating machine and method with mobile sprayer
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Solution Overview
Problem
Existing coating machines for tannery and textile articles experience premature wear and noise due to repeated shocks from back-and-forth carriage movements, requiring costly maintenance and reducing production rates, with previous solutions failing to completely eliminate these issues.
Innovation Solution
A coating machine with a variable-speed motor and kinematic chain system that automatically adjusts speed based on the sprayer's position, using a rotor and control means to prevent shocks by smoothly accelerating and decelerating the sprayer along a projection path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the carriage moves back and forth at constant speed using a chain drive system, then the machine structure is simple and easy to manufacture, but repeated shocks occur at direction changes causing premature wear and noise
Solution Approach 1:
The patent applies dynamics by replacing the constant-speed chain drive with a variable-speed motor system that dynamically adjusts the carriage speed. The motor accelerates and decelerates the carriage smoothly, eliminating sudden direction changes and shocks while maintaining the overall simplicity of the machine structure.
Solution Approach 2:
The patent changes the speed parameter from constant to variable throughout the operating cycle. By programming the motor to vary speed according to position (accelerating in mid-travel, decelerating near endpoints), the system eliminates shocks at direction changes while preserving manufacturing simplicity.
2Productivity
If the carriage moves back and forth at constant speed, then the production rate is maintained, but shocks are generated causing noise and environmental pollution
Solution Approach 1:
The patent varies the speed parameter dynamically during the carriage cycle - maintaining higher speeds during mid-travel to preserve productivity, and reducing speeds near endpoints to eliminate shock-generated noise. This parameter modulation resolves the contradiction between production rate and noise pollution.
3Ease of operation
If the carriage moves back and forth at constant speed, then the coating application is simple, but shocks occur reducing coating quality
Solution Approach 1:
The patent uses dynamic speed control where the motor automatically adjusts carriage velocity based on position. The system accelerates during coating zones to maintain operational efficiency while decelerating at transition zones to eliminate shocks, thereby preserving both ease of operation and coating quality.
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 solution results in a robust, silent, and low-maintenance coating machine that maintains high production rates with optimal coating quality, eliminating shocks and reducing environmental noise.
Implementation Method 1
a variable speed motor adapted to move said sprayer along a projection path
Implementation Method 2
a sprayer mounted movably relative to the positioning support and adapted to project the coating onto said article to be coated
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a coating machine (1) designed to coat an article (2) with a coating, the coating machine (1) comprising: - a positioning support (3) for the article (2) to be coated, - a movable sprayer (4) designed to project the coating onto said article (2), - a motor (7) designed to drive said sprayer (4), and being characterized in that the motor (7) is provided with a rotor (18) for driving the sprayer (4), the coating machine also comprising a control means (8) designed to: - determine the position of said sprayer (4) as a function of the number of revolutions made by the rotor (18), and - automatically vary the speed (ω) of the motor (7) as a function of the position of said sprayer (4), so as to cause acceleration or deceleration of said sprayer (4). Industrial coating for tannery articles.