Elliptical Reflector Curing Apparatus for Uniform Energy Distribution
Solution Overview
Problem
Existing curing systems using light energy irradiators struggle to consistently and efficiently cure coatings on three-dimensional objects with complex geometries, such as contoured cabinet doors, due to uneven distribution of curing energy across flat and rounded surfaces.
Innovation Solution
The apparatus employs an elongated light source with an open-sided, elongated concave reflector having a generally elliptical cross-section, angled to concentrate curing energy along a specific line coincident with the object's path, with additional reflectors positioned at 55°-77° from vertical to ensure equal energy dosage and peak intensity on both top and side surfaces, and a back reflector system to redirect energy for comprehensive coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional light source with a simple reflector is used, then the device complexity is low, but the curing energy distribution is uneven across different surfaces
Solution Approach 1:
The reflector system is divided into multiple independent reflectors (first reflector, second reflector, third reflector, fourth reflector) positioned at different orientations. Each reflector independently directs curing energy to specific surfaces (top, bottom, left side, right side), ensuring uniform energy distribution across all surfaces of the three-dimensional object while maintaining manageable individual reflector designs
Solution Approach 2:
Each reflector is specifically oriented to direct curing energy to a particular surface of the object. The first and second reflectors target top and bottom surfaces respectively, while the third and fourth reflectors target left and right side surfaces. This localized energy distribution ensures that each surface receives appropriate curing energy for uniform manufacturing precision
2Manufacturing precision
If the light source is positioned to cure top surfaces, then top surface curing is effective, but side surfaces receive insufficient curing energy
Solution Approach 1:
The curing system is segmented into multiple reflector units, each responsible for a specific surface. The third reflector is specifically oriented to direct curing energy to the left side surface, while the fourth reflector targets the right side surface. This segmentation ensures that side surfaces receive sufficient curing energy independent of the top surface curing arrangement
Solution Approach 2:
The reflector system extends from a single-plane configuration to a multi-dimensional arrangement with reflectors positioned at different orientations and angles. The third and fourth reflectors are positioned to illuminate side surfaces from lateral directions, adding dimensional coverage to the curing system and ensuring uniform energy distribution across all surfaces including previously under-illuminated side surfaces
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
This configuration ensures that all surfaces of the three-dimensional object receive consistent and equal dosages of curing energy and peak intensity, effectively addressing the challenge of uneven curing on complex surfaces.
Implementation Method 1
An open-sided, elongated concave reflector is positioned behind the elongated light source to provide a focus for the radiated curing energy onto the object. The reflector has a generally elliptical cross-section for radiating the curing energy along an energy concentration line generally coincident with the object. The elongated light source is generally at one of the two focal points of the elliptical reflector. This focal point will be called the source focal point. The emitted light from the source focal point concentrates at the other focal point of the reflector along the energy concentration line.
Implementation Method 2
Curing is produced by a polymerization reaction initiated by ultraviolet light, changing a component of the coating from a liquid to a solid state almost instantaneously.
Data Source
AI summary
An apparatus is provided for curing a curable coating on a three-dimensional object having at least a top surface and a side surface, with the object being advanced along a generally horizontal path. The apparatus includes an elongated light source of radiating curing energy for curing the coating on the surfaces of the object. An open-sided, elongated concave reflector is positioned behind the elongated light source to provide a focus for the radiated curing energy onto the object. The reflector has a generally elliptical cross-section for radiating the curing energy along an energy concentration line generally coincident with the object. The elongated light source is generally at the source focal point of the elongated reflector. The reflector is angled such that a line that runs between the source focal point of the reflector and the energy concentration line extends on the order of 55°-77° from vertical. This angle causes approximately twice as much curing energy and twice the peak intensity to be radiated onto the side surface of the object than onto the top surface of the object.