Tapered Cup-Shaped Body Geometry for Uniform Compression Molding
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Solution Overview
Problem
Existing methods for producing cup-shaped bodies with extreme tapers using compression molding face challenges in managing material flow and require high operating pressures, leading to complex processes and uneven material distribution.
Innovation Solution
A cup-shaped body design with specific ratios of height to diameter and average taper, combined with a method using compression molding, allows for the production of cup-shaped bodies with varied degrees of taper, ensuring reliable, easy implementation, and lower molding forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If compression molding is used to produce cup-shaped bodies with extreme tapers and very low thickness, then weight and cost are reduced, but extremely high operating pressures are produced and the fluid will unevenly occupy the space defined between the mold and the male plug
Solution Approach 1:
The patent applies parameter changes by optimizing the geometric parameters of the cup-shaped body, specifically the ratio between height and diameter (H/D between 0.35 and 1.65) and the ratio between diameter and average taper (D/Cmedia between 0.5 and 1). These parameter optimizations enable the material to flow more uniformly during compression molding, reducing the need for extremely high pressures while maintaining low weight and thin walls.
2Weight of moving object
If compression molding is used to produce cup-shaped bodies with extreme tapers and very low thickness, then weight and cost are reduced, but the process becomes very complex and high operating pressures are required
Solution Approach 1:
The patent optimizes geometric parameters to simplify the molding process. By controlling the H/D ratio between 0.35 and 1.65 and the D/Cmedia ratio between 0.5 and 1, the material flow becomes more predictable and uniform, eliminating the need for complex process management and extremely high operating pressures that would otherwise be required to achieve extreme tapers with thin walls.
3Weight of moving object
If the thickness is kept very low to reduce weight and cost, then the cup-shaped body becomes lighter, but the molding pressure increases and material flow becomes difficult to manage
Solution Approach 1:
The patent resolves this contradiction by optimizing the geometric parameters of the cup-shaped body. By maintaining the H/D ratio between 0.35 and 1.65 and the D/Cmedia ratio between 0.5 and 1, the design enables thin-walled structures with low weight while simultaneously ensuring that material flow occurs at manageable pressures, avoiding the extremely high pressures that would otherwise be required.
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 solution enables the production of lightweight cup-shaped bodies with controlled taper, reducing molding pressures and ensuring uniform material distribution, while maintaining desired structural integrity and aesthetic qualities.
Implementation Method 1
The present disclosure relates to a cup-shaped body made of polymeric material, for the production of containers, and a method for manufacturing a cup-shaped body. In particular, the present disclosure relates to a cup-shaped body of the type produced using compression molding
Data Source
AI summary
A cup-shaped body having an axis of longitudinal extension and defining a mouth and a longitudinally-extended body which is closed at the opposite end from the mouth; the longitudinally-extended body has a conical or frustum-like extension with a diameter that increases progressively from the opposite end toward the mouth, the cup-shaped body having a height extension measured between the mouth and the opposite end, while the mouth has a circular shape with a diameter.The cup-shaped body has the following features:the ratio between the height extension and diameter is between 0.35 and 1.65; andthe ratio between the diameter, measured in millimeters, and the average taper (Cmedia) between the taper of the external surface of the longitudinally-extended body and the taper of the internal surface of the longitudinally-extended body, diameter/Cmedia, is between 0.5 and 1.