Electromagnetic Sorter Roller Actuation
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Solution Overview
Problem
Existing sorting conveyors with diverting rollers are limited by bulky and noisy actuation mechanisms, which restrict the minimum package size and density of supported rollers, and fail to efficiently manage article trajectories.
Innovation Solution
A sorter system utilizing a platform with rotatable rollers and pivotable cradles, where a linear stator generates a magnetic flux wave to rotate the rollers and pivot the cradles, allowing for controlled sorting directions through a controller that manages the flux wave's amplitude and direction, with fixed detents and plungers for precise axis adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional mechanical actuation mechanisms are used to pivot rollers, then the rollers can be directed to sort articles, but the mechanisms become bulky and noisy, limiting minimum package size and roller density
Solution Approach 1:
The patent replaces traditional mechanical actuation mechanisms with electromagnetic field-based control. Linear stators generate moving magnetic fields that interact with armature elements on the rollers to pivot them, eliminating bulky mechanical linkages and reducing noise while enabling precise roller direction control for article sorting
Solution Approach 2:
The invention extracts and eliminates the complex mechanical actuation components from the sorter system. By removing mechanical linkages, gears, and shafts in favor of electromagnetic fields, the design achieves simpler, more compact roller control that overcomes the bulkiness and noise problems of conventional mechanisms
2Ease of operation
If traditional mechanical actuation mechanisms are used to pivot rollers, then the rollers can be directed to sort articles, but noise is generated and minimum package size is limited
Solution Approach 1:
The patent replaces traditional mechanical actuation mechanisms with electromagnetic field-based control. Linear stators generate moving magnetic fields that interact with armature elements on the rollers to pivot them, eliminating bulky mechanical linkages and reducing noise while enabling precise roller direction control for article sorting
3Productivity
If rollers are densely packed to increase sorting capacity, then more articles can be sorted simultaneously, but the actuation mechanisms become more complex and harder to manage
Solution Approach 1:
The patent implements a universal electromagnetic control system that can actuate multiple rollers simultaneously through the moving magnetic field. The same linear stator configuration controls all rollers in the array, eliminating the need for individual complex actuation mechanisms for each roller and enabling dense packing while maintaining manageable system complexity
Solution Approach 2:
The invention merges the control of multiple rollers into a single electromagnetic field system. The moving magnetic field generated by the linear stator interacts with armature elements across multiple rollers simultaneously, combining what would traditionally be separate actuation systems into one unified control mechanism that enables high roller density
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 system enables efficient and precise sorting of articles by rotating and pivoting rollers to direct them accurately, overcoming the limitations of bulkiness and noise in existing technologies, while allowing for flexible sorting options and reduced mechanical complexity.
Implementation Method 1
a linear stator propagating a magnetic flux wave across the platform, the magnetic flux wave interacting with the rotors to rotate the rollers about their axes of rotation
Implementation Method 2
the magnetic flux wave interacting with the armature elements; wherein said armature elements are attached to the cradles and the magnetic flux wave causes the cradles to pivot about the vertical axis
Data Source
Figure 1~2
Figure 3~4C
Figure 5A~7
AI summary
A sorting conveyor having electromagnetically actuated rollers for sorting articles off one or both sides of the conveyor. A linear stator creates a magnetic flux wave that rotates rotors in the article-supporting rollers and selects their direction of rotation. In one version the magnetic flux wave swivels the rollers to change the sorting direction. In another version the magnetic flux wave causes one set of rollers or another set of orthogonally disposed rollers to contact conveyed articles.