Liquid-Veil Painting Head for Uniform Rigid Panel Coating
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Solution Overview
Problem
Existing coating technologies for rigid panels, such as those made of wood or plastic, face challenges in uniformly distributing liquid coatings like paint on main surfaces, leading to inefficiencies, waste, and environmental pollution, while existing edge-coating devices are inadequate for covering both main surfaces and edges effectively.
Innovation Solution
A coating device with a painting head that includes a dispensing outlet and suction inlet configuration, optimized for uniform distribution on main surfaces by maintaining a constant flow of liquid product and air suction, even on irregular surfaces, and adjusted for edge coverage to prevent non-homogeneous paint distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spray guns are used to coat main surfaces, then coating speed is improved, but uniformity of paint distribution deteriorates
Solution Approach 1:
The painting head is divided into multiple independent spray outlets arranged in a specific pattern, with each outlet responsible for a specific zone. This segmentation allows independent control of paint flow and atomization at each outlet, ensuring uniform distribution across the entire panel surface while maintaining high coating speed through parallel operation.
Solution Approach 2:
Each spray outlet is equipped with adjustable parameters (flow rate, atomization pressure, spray angle) tailored to its specific position and function. This local optimization ensures that each zone receives the precise amount of paint needed for uniform coverage, resolving the contradiction between speed and uniformity.
2Productivity
If spray guns are used to coat main surfaces, then coating efficiency is improved, but liquid product waste increases
Solution Approach 1:
The system incorporates sensors that monitor paint consumption, spray pattern quality, and panel coverage in real-time. This feedback enables automatic adjustment of spray parameters to optimize paint utilization, reducing waste while maintaining high coating efficiency through continuous optimization rather than fixed high-rate application.
Solution Approach 2:
The spray outlets are designed to apply paint in controlled partial passes, building up coverage progressively rather than attempting complete coverage in a single high-volume pass. This approach reduces overall paint waste while achieving the same coating efficiency through multiple targeted applications.
3Productivity
If spray guns are used to coat main surfaces, then coating speed is improved, but environmental pollution increases
Solution Approach 1:
The system captures and recycles the atomized liquid substance that would otherwise be wasted and pollute the environment. By incorporating recovery mechanisms that capture overspray and unused atomized material, the system converts what would be harmful pollution into recoverable resource, maintaining high coating speed while eliminating environmental damage.
4Productivity
If spray guns are used to coat main surfaces, then coating speed is improved, but homogeneity of paint layer deteriorates
Solution Approach 1:
The painting head is divided into multiple independent spray outlets arranged in a specific pattern, with each outlet responsible for a specific zone. This segmentation allows independent control of paint flow and atomization at each outlet, ensuring uniform distribution across the entire panel surface while maintaining high coating speed through parallel operation.
Solution Approach 2:
The system dynamically adjusts spray parameters (flow rate, pressure, atomization intensity) at each outlet based on real-time monitoring of paint layer formation. This ensures consistent homogeneity across the entire panel even at high coating speeds, as parameters are optimized for each local zone and adjusted during operation.
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
Ensures uniform coating on main surfaces and edges of rigid panels, reducing waste and environmental pollution, while allowing for easy adjustment to different materials and panel types.
Implementation Method 1
at least one suction inlet with a substantially longitudinal development, for the suction of this liquid product so as to create a veil of liquid product between said dispensing outlet and said suction inlet
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Device (1) for coating, preferably for painting, the main surfaces (SP1, SP2) of rigid panels (P) with liquid products, comprising a substantially horizontal support surface (2) to support a rigid panel (P) and a painting head (3) placed orthogonally to the direction of relative movement (A) and above the support surface (2). The painting head (3) has, in sequence on its face (5) facing the support surface (2), a dispensing outlet (6) for a liquid product and a suction inlet (7) for the liquid product so as to create a veil of liquid product. The first side surface (52) of the face (5) is configured so that the distance d4 between one of the points around the first end (61) of the dispensing outlet (6) and the support surface (2) is smaller than the distance dx between any other point belonging to the face (5) and the support surface (2).