Projection Rotation Wheel Balancing With Channel-Guided UV Curing
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Solution Overview
Problem
Existing methods for dynamically balancing rotation wheels in projection apparatuses, such as screwing, normal-temperature curing, thermal curing, and photo-curing, face issues with production efficiency, structural reliability, and risk of detachment, affecting the overall performance and structural integrity of the rotation wheel.
Innovation Solution
A rotation wheel design featuring a substrate, clamping member, and balancing assembly with channels and adhesive material to securely fix balancing members, enhancing contact areas and adhesion through direct irradiation curing, thereby improving structural reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If photo-curing adhesive is used to fix the balancing member, then the production efficiency is improved due to shortest curing time, but the structural reliability deteriorates because the adhesive at the bottom cannot be fully cured and may detach
Solution Approach 1:
The balancing member is divided into multiple sections with through-holes, allowing UV light to penetrate from multiple directions and fully cure the adhesive throughout the entire structure, eliminating the uncured adhesive problem while maintaining fast photo-curing process
Solution Approach 2:
The channel structure acts as an intermediary that guides UV light penetration and adhesive distribution, ensuring complete curing of the adhesive in previously inaccessible areas while maintaining the efficiency of photo-curing method
2Productivity
If thermal curing adhesive is used to fix the balancing member, then the production efficiency is improved due to shorter curing time compared to normal-temperature curing, but the structural reliability deteriorates because temperature changes affect the optical layer, rotation plate and driving assembly
Solution Approach 1:
The patent replaces thermal curing method with photo-curing method, substituting a mechanical/thermal process with an optical process that avoids temperature-related damage to sensitive components while maintaining efficient curing speed
Solution Approach 2:
The curing method transitions from thermal parameter (temperature) to optical parameter (light wavelength), changing the fundamental curing mechanism to avoid thermal damage while achieving rapid curing through UV light activation
3Reliability
If screwing method is used to attach the balancing member, then the structural reliability is maintained initially, but the reliability deteriorates over time due to vibration causing screws to become loose and detach
Solution Approach 1:
The patent replaces mechanical screw connection with chemical adhesive bonding, eliminating moving parts that can loosen under vibration and providing a permanent, vibration-resistant attachment solution
Solution Approach 2:
The patent uses composite adhesive structures (normal-temperature curing adhesive combined with photo-curing adhesive) to create a bonding solution that provides both initial adhesion and final cross-linked strength, ensuring permanent attachment resistant to vibration
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 design increases contact areas and adhesion between adhesive material, balancing members, and clamping members, ensuring stable attachment and enhancing the structural reliability of the rotation wheel, leading to favorable projection quality and product competitiveness.
Implementation Method 1
the photo-curing adhesive is irradiated with a light source of a predetermined wavelength to set the photo-curing adhesive
Data Source
AI summary
A rotation wheel, comprising a substrate, a driving assembly, a clamping member and a balancing assembly. The driving assembly is connected with the substrate, and is configured to drive the substrate to rotate around an axis of the driving assembly as the central axis. The clamping member is disposed along the axis on the substrate. The balancing assembly includes at least one balancing material, an adhesive material and at least one channel. The adhesive material encapsulates the balancing material and is filled into the channel to fix the balancing assembly onto the clamping member. The rotation wheel and the projection apparatus of the invention exhibit favorable structural reliability.