Segmented Back Frame Mold for Flat Panel Displays
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Solution Overview
Problem
Conventional back frames for liquid crystal display devices are costly due to high material and mold expenses, requiring large, complex molds for different sizes and multiple molds for bracing pieces with unique mounting structures.
Innovation Solution
A method involving primary assembling pieces with joint sections to form a back frame, using a bracing mold with multiple patterns to create various mounting structures on bracing pieces, allowing for shared molds and reduced material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a unitary back frame is made with metal stamping or plastic injection molding, then the back frame structure is simple, but the material cost and mold cost are high
Solution Approach 1:
The back frame is divided into multiple separate components (first back frame component, second back frame component, third back frame component) that are assembled together. This segmentation reduces material waste during manufacturing while maintaining structural integrity, and allows each component to be manufactured with smaller, less expensive molds.
2Length of stationary object
If large-sized stamping equipment is used for large-sized back frame, then the back frame can be manufactured, but the equipment size and mold size are large and complex, increasing expenditure
Solution Approach 1:
The large back frame is segmented into smaller components that can be manufactured with smaller, simpler stamping equipment and molds. Each component is manufactured separately and then assembled to form the complete back frame structure.
3Manufacturing precision
If multiple bracing molds are used for bracing pieces with different mounting structures, then each bracing piece can be manufactured with correct mounting structures, but the bracing mold cost increases
Solution Approach 1:
A single bracing mold is designed with multiple positioning patterns that can accommodate different bracing piece configurations. The mold can be repositioned or reconfigured to manufacture various types of bracing pieces (first, second, third bracing pieces) with different mounting structures, eliminating the need for multiple dedicated molds.
Data Source
AI summary
A method is provided for manufacturing a back frame of a flat panel display device, which joins at least first and second primary assembling pieces to form a back frame, in which the first primary assembling piece has an end forming at least two joint sections, and each of the joint sections has a structure mating an end of the second primary assembling piece, the first primary assembling piece using one of the joint sections to join the corresponding end of the second primary assembling piece, the back frame further including a plurality of bracing pieces that are fixed to the primary assembling pieces; moving the bracing pieces according to a bracing pattern provided in a bracing mold in order to form a corresponding mounting structure on the bracing pieces.