Tension Roller Meandering Correction via Segmented Ends
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Solution Overview
Problem
Belt meandering in conveyance devices is challenging due to dimensional tolerance and displacement issues during assembly, limiting the range for load adjustment and making re-correction difficult, especially when initial correction is biased, leading to a narrow shift range for further adjustments.
Innovation Solution
A belt conveyance device with a meandering correction part that shifts the front end of the tension roller in a radial direction using an eccentric cam mechanism and an adjustment part that shifts the rear end of the tension roller to center the correction range, allowing for variable positioning of the front end to correct belt meandering effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If meandering correction is performed by shifting load to one side, then belt meandering is corrected, but the shift range for re-correction becomes narrow
Solution Approach 1:
The tension roller is divided into two independent end portions (first end portion and second end portion) that can be shifted separately in the radial direction. This segmentation allows the meandering correction part to shift one end for correction while the adjustment part can shift the other end to restore the load distribution, effectively resolving the contradiction between achieving precise alignment and maintaining adaptability for re-correction
Solution Approach 2:
The system transitions from a static tension roller position to a dynamic configuration where both end portions can be independently adjusted. The meandering correction part provides dynamic correction capability while the adjustment part dynamically restores the system state, enabling repeated corrections within the full radial range rather than being constrained to a narrow shifted range
2Manufacturing precision
If dimensional tolerance and displacement occur during assembly, then belt meandering occurs, but the correction range is limited
Solution Approach 1:
By segmenting the tension roller into independently adjustable end portions, the system can compensate for assembly tolerances and displacements more effectively. Each end portion can be adjusted to account for local misalignments, expanding the effective correction range beyond what a single rigid roller position could provide
Solution Approach 2:
The system changes the positional parameters of the tension roller ends in the radial direction to correct meandering caused by assembly variations. The ability to independently vary the radial positions of both end portions provides multiple parameter adjustment degrees of freedom, ensuring reliable correction across a wider range of assembly tolerance scenarios
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
Enables precise correction of belt meandering within a predetermined range, ensuring that re-correction can be performed even in biased states, maintaining the belt's alignment and preventing limitations in load shifting, thus enhancing the reliability and maintainability of the conveyance system.
Implementation Method 1
a meandering correction part shifting one end of a tension roller in an axial direction of the tension roller in a radial direction
Data Source
AI summary
The belt conveyance device includes a plurality of rollers, a belt, a meandering correction part, and an adjustment part. The rollers are disposed at intervals each other and rotate around axes. The belt is disposed around the plurality of rollers and travels. The meandering correction part shifts one end portion in an axial direction of a tension roller included in the plurality of rollers in a radial direction within a predetermined range to correct a meandering of the belt. The adjustment part shifts the other end portion in the axial direction of the tension roller in the radial direction such that a position of the one end portion of the tension roller is variable under a state where the meandering of the belt is corrected.