Extrusion Roll Selectable Skew Support System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional extrusion forming systems face issues with roll deformation due to material thickness, leading to non-uniform product formation and potential system downtime due to misalignment and wear of components, which existing skew mechanisms fail to adequately address.
Innovation Solution
A support system that allows for selective skewing of extrusion rolls by varying the angular relationship between their axes through a movable housing and actuating assembly, enabling uniform gap maintenance and reducing stress on supporting structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If skew mechanisms are designed to offset shaft ends for roll skewing, then roll deformation accommodation is improved, but component misalignment and wear increase
Solution Approach 1:
The patent introduces a movable support structure with a slider mechanism that acts as an intermediary between the fixed frame and the roll shaft. This slider allows the shaft to skew relative to the cooperating roll while maintaining proper alignment of the shaft ends with their supports, preventing misalignment and wear of bearing components.
Solution Approach 2:
The support structure is made dynamically adjustable through the slider mechanism, allowing the shaft position to be changed from a fixed alignment to a skewed position. This dynamic capability enables the system to accommodate roll deformation while maintaining component alignment through controlled movement rather than fixed misalignment.
2Strength
If robust shaft and supporting structure are used to anticipate roll arching forces, then structural strength is improved, but device complexity and cost increase
Solution Approach 1:
Instead of using an overly robust fixed structure to anticipate and resist all possible arching forces, the patent employs a dynamic slider mechanism that allows controlled movement to accommodate deformation. This reduces the need for excessive structural strength while maintaining reliability under actual operating conditions.
Solution Approach 2:
The system changes the operational parameters of the support structure by allowing positional adjustment of the shaft through the slider. This enables the structure to adapt to varying deformation conditions rather than requiring maximum strength for all possible scenarios, reducing overall structural complexity.
3Manufacturing precision
If roll skewing is implemented to conform arch shape to cooperating roll, then product thickness uniformity is improved, but shaft support misalignment increases
Solution Approach 1:
The slider mechanism serves as an intermediary that decouples the skewing function from the support alignment function. It allows the shaft to be skewed for conforming to the roll arch shape while simultaneously maintaining proper alignment with the support structure, eliminating the trade-off between these two requirements.
Data Source
AI summary
A support system through which a first extrusion roll is operatively mounted upon a frame. The first extrusion roll has a shaft that has a first operating axis and axially spaced first and second ends. A first support assembly at the first shaft end has a first housing. A second support assembly acting between the frame and the first support assembly and has a second housing. The second housing is movable relative to the frame to selectively change a relationship between the first extrusion roll and a second extrusion roll on the frame that has a second operating axis and cooperates with the first extrusion roll during formation of a product. The first housing is movable guidingly relative to the second housing along a first path to thereby change an angular relationship between the first and second operating axes.