3D Film Coating Contact Structure for Wrinkle-Free Stretch
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Solution Overview
Problem
The variation in the amount of stretch in a film coating on a three-dimensional work varies depending on the part of the coated work due to differences in distance between the work and the film, leading to wrinkles.
Innovation Solution
A coating apparatus with deformable continuous structures supporting contact members that adjust to the shape of the work, ensuring consistent film stretch across the coated surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a film is stretched over a three-dimensional work, then the film can cover the entire work surface, but the amount of stretch varies depending on the part of the work causing wrinkles
Solution Approach 1:
The support structure for contact members is designed to be deformable rather than rigid, allowing it to dynamically adapt to the three-dimensional shape of the work piece. This ensures that contact members maintain appropriate spacing and contact pressure across varying surface geometries, achieving uniform film stretch without wrinkles while avoiding the complexity of multiple independently adjustable mechanisms.
Solution Approach 2:
The deformable support structure changes its physical configuration parameters (shape, curvature, positioning) in response to the work piece geometry. This automatic parameter adjustment ensures consistent contact member spacing and film stretch ratios across different work surfaces, eliminating wrinkles without requiring complex active control systems.
2Manufacturing precision
If contact members are fixed in position, then the structure is simple, but the film stretch varies depending on the part of the coated work
Solution Approach 1:
The support structure transitions from a fixed rigid configuration to a deformable dynamic system that automatically adapts to work piece shape. This single design change achieves uniform film stretch across complex geometries while maintaining ease of manufacture, as the deformable structure can be fabricated as a single piece or modular components without requiring multiple independently adjustable mechanisms.
3Adaptability or versatility
If the support structure is rigid, then manufacturing is easy, but it cannot adapt to different work shapes causing non-uniform film stretch
Solution Approach 1:
The support structure incorporates deformable elements that allow automatic adaptation to three-dimensional work shapes. This dynamic capability provides versatility across different work geometries while keeping the overall structure relatively simple, avoiding the need for complex active adjustment mechanisms or multiple specialized contact member sets.
Solution Approach 2:
The deformable support structure automatically changes its geometric parameters (curvature, positioning, spacing) to match the work piece shape. This passive parameter adaptation provides broad versatility across different work geometries without requiring complex active control systems, achieving adaptability through the structure's inherent flexibility.
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
Reduces variation in film stretch, preventing wrinkles and ensuring uniform adhesion of the film to the work.
Implementation Method 1
a first continuous structure arranged to extend continuously in a first extending direction along the first side, and configured to support the plurality of first contact members and be capable of deforming in a first contact/separation direction in which the plurality of first contact members come into contact with/separate from the film
Data Source
AI summary
A coating apparatus including a displacement unit configured to displace a first continuous structure and a second continuous structure, and a work to be coated, relative to each other, such that a film is brought into contact with the work to be coated by a plurality of first contact members and a plurality of second contact members.