Variable Contour Rounding Bar for Semi-Solid Material Axis Control
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Solution Overview
Problem
Current rounding machines, such as conical and cylindrical models, suffer from issues like the formation of triple point blemishes, inconsistent axis of rotation, and lack of versatility to handle different materials and sizes, leading to product inconsistencies and increased labor costs due to the need for frequent changes in rounding bars.
Innovation Solution
A rounding bar with a variable contour that changes along its length, allowing the semi-solid material to roll through multiple axes of rotation, ensuring all surface areas are worked and reducing blemishes, combined with an adjustable support structure for easy adaptation to different materials and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a constant contoured rounding bar is used, then the structure is simple and easy to manufacture, but triple point blemishes are created and rounding consistency deteriorates
Solution Approach 1:
The rounding bar transitions from a static constant contour to a dynamic variable contour that changes along the length of the working area. This allows the contact point between the rounding bar and semi-solid material to move along the contour, preventing triple point blemishes while maintaining manufacturing feasibility through progressive contour variations.
Solution Approach 2:
Different sections of the rounding bar working area have different contour profiles. The contour varies locally along the length, with each section providing specific rounding characteristics. This local variation ensures that different portions of the semi-solid material receive appropriate rounding action, eliminating consistent blemish patterns.
2Device complexity
If a single rounding bar is used, then the device complexity is low, but adaptability to different materials and sizes is limited
Solution Approach 1:
The rounding bar incorporates adjustable parameters including the angle of deflection relative to the conveyor belt direction and the contour profile along the working area. These parameters can be modified to accommodate different semi-solid materials and sizes, providing versatility without requiring complete device replacement.
Solution Approach 2:
The variable contour rounding bar is designed to perform multiple rounding functions for different materials and sizes through its adjustable parameters and contour variations. A single rounding bar design can handle diverse applications by changing operational parameters, reducing the need for multiple specialized rounding bars.
3Duration of action of moving object
If the rounding bar working area is long, then continuous rounding action is provided, but navel blemishes increase in severity
Solution Approach 1:
The contour of the rounding bar varies dynamically along the working area length. This variable contour causes the contact point to migrate along the rounding bar surface as the semi-solid material rolls through, preventing the formation of stationary triple points that create navel blemishes, while still providing continuous rounding action over an extended working area.
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 variable contour rounding bar ensures consistent and efficient rounding of semi-solid materials, reducing blemishes and unworked areas, and allows for easier adaptation to various materials and sizes without frequent changes, enhancing production efficiency and product quality.
Implementation Method 1
the rounding process is based, in part, on a rounding effect imparted by the rounding machine onto the semi-solid material portion, caused by the induced rolling action which takes place as the semi-solid material portion is forced against the contour and at the same time forced to roll down the length of the contour
Data Source
Figure 1~2
Figure 3~4A
Figure 4B~4C
AI summary
A rounding device and method of rounding that provides improved rounding of semi-solid material portions by introducing variations in the contours and profile of the working surface of a rounding bar to produce one or more substantial changes in the axis of rotation of the semi-solid material portion along the length of the rounding bar's working surface. By controlling the changes in the axis of rotation the rounded material can be produced with more uniformity, fewer blemishes and less surfaces that are left un-worked, as compared to rounding devices that are currently in use.