Silicone Ring Compression Molding with Spacer-Insert Mold
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Solution Overview
Problem
Conventional methods of compression molding fail to produce a thin-line silicone ring with symmetrical inner-band and defined edges, often resulting in flaws such as color loss, surface texture issues, and optical distortion, which are not suitable for creating a wedding band alternative for active lifestyles.
Innovation Solution
A unique compression-molding process involving specific temperature, pressure, and time controls, along with the use of spacer-insert molds to form a symmetrical inner-band equidistantly positioned between two outer-band halves, ensuring a visually appealing and durable silicone ring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional compression molding methods are used, then production is simpler and faster, but the product exhibits flaws such as color loss, surface texture blisters, waviness, and optical distortion
Solution Approach 1:
The molding process is divided into multiple sequential stages: first molding the outer band half, then adding the inner band, and finally completing the ring. This segmentation allows each component to be molded with optimal parameters, eliminating surface defects and achieving symmetrical inner bands that run through the entire circumference without waviness or blisters
Solution Approach 2:
The outer band half is molded and prepared in advance before the inner band is added. This preliminary action ensures that the outer band is properly positioned and ready to receive the inner band, allowing for precise alignment and eliminating edge definition issues that plague conventional single-step molding
2Manufacturing precision
If conventional compression molding is used, then the process is simpler, but a thin-line ring with symmetrical inner-band and defined edges cannot be produced
Solution Approach 1:
The ring is constructed by molding the outer band half first, then adding the inner band in a controlled manner, and finally completing the ring. This multi-stage approach enables precise control over inner band symmetry and edge definition, achieving the thin-line design with uniform appearance throughout the entire circumference
Solution Approach 2:
The inner band is nested within the outer band structure during the molding process. The inner band is positioned and molded while the outer band is already in place, ensuring precise alignment and symmetrical positioning equidistantly between the two outer-band halves
3Object-affected harmful factors
If silicone rubber is used instead of conventional ring materials, then safety and comfort are improved, but the ring may lack durability under extreme conditions
Solution Approach 1:
The ring is constructed from silicone rubber, which inherently provides resistance to extreme temperatures, abrasions, and chemicals while remaining hypoallergenic and comfortable. The multi-stage molding process ensures the silicone material is properly densified and free of voids, maximizing its inherent strength and durability properties
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 process effectively produces a silicone ring with a symmetrical inner-band running through the entire circumference, eliminating common molding flaws and providing a safe, cost-effective alternative to traditional wedding bands that withstands extreme temperatures and abrasions.
Implementation Method 1
The two outer-band halves are compression molded into a single ring with an inner, thin-line band formed by the spacer-insert mold that was filled with silicone rubber
Implementation Method 2
All three-conjoined molds are inserted into a compression chamber. The two outer-band halves are compression molded into a single ring
Data Source
Figure 1
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AI summary
A method of manufacturing a silicone ring consisting of two outer-band halves formed by compression silicone-molding in a first mold and an inner-band formed by placing half of the outer-bands of the ring in a second mold, placing a spacer-insert mold over the second mold, inserting a silicone rubber in the cavities of a spacer-insert mold, inserting the remaining outer-band halves into a fourth mold, inserting the three molds into a compression chamber to vulcanize the outer-band halves and the inner-band together, wherein the first and second outer-bands form a complete ring, and a symmetrical inner-band is formed in between the first and second outer-band halves.