Rotary Gate Diverter for High-Speed Article Sorting

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Solution Overview

Problem

Existing article sorters face challenges in achieving faster sorter speeds due to mechanical components that degrade over time and require passive mechanical energy for diverting operations, leading to potential damage and reduced efficiency.

Innovation Solution

An article sorter with an electrically operated rotary actuator, such as a stepper motor, is used to rotate a gate between diverting and non-diverting states, coordinated with sorter speed to minimize component wear and enhance sorting rates, utilizing a speed increaser to maintain high angular speeds and a programmable sweep profile to avoid interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If products are conveyed along a conveyor line and manually removed from the front end, then the sorting system is simple to operate, but the operator is repeatedly exposed to harmful radiation from front-end loaders

Engineering Contradiction:
Improveradiation exposure to operatorVSAvoidsorter system complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The sorting system is divided into multiple independent sorting positions (first sorting position, second sorting position, etc.) arranged along the conveyor line. Each position can independently divert products, distributing the sorting function across multiple locations rather than concentrating it at one exposed position.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from a single-point sorting approach to a multi-point sorting approach along the conveyor's length. By adding the longitudinal dimension to the sorting positions, operators can be positioned at different locations, reducing radiation exposure while maintaining sorting functionality.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If multiple sorting positions are provided along the conveyor line, then operator radiation exposure is reduced, but the device complexity increases

Engineering Contradiction:
Improveradiation exposure to operatorVSAvoidnumber of sorting positions
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

Each sorting position is equipped with identical diverters that can perform the same diverting function. This universal design allows multiple positions to handle sorting tasks interchangeably, reducing the need for specialized equipment at each position and thereby limiting overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The darter mechanism is replicated at multiple sorting positions along the conveyor line. By copying the same proven design rather than creating variations, the system achieves multiple sorting positions with minimal increase in complexity, as each unit is a standardized copy of the others.

Inventive Principle:
Principle #26Copying

3Manufacturing precision

If a darter is used to divert products at each sorting position, then sorting accuracy is improved, but the cost of the sorter system increases

Engineering Contradiction:
Improvesorting accuracyVSAvoidsystem cost
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The darter is designed as a simple, mechanically robust component that can be manufactured at low cost. Rather than using complex automated mechanisms, the patent employs a straightforward mechanical darter that achieves sufficient sorting accuracy while minimizing manufacturing costs.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The darter mechanism is designed to be manually operated or简单地 controlled, reducing the need for expensive automated control systems. The sorting action is achieved through direct mechanical interaction, allowing the system to maintain high sorting accuracy without requiring costly electronic controls or sensors at each position.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3494077B1Article sorter
Publication Date: 2026.05.13 DEMATIC CORP
  • EP3494077B1 patent drawingFigure 1
  • EP3494077B1 patent drawingFigure 2
  • EP3494077B1 patent drawingFigure 3

AI summary

A plurality of diverters each selectively divert at least one article moving member having a diverting member from a non-diverting path extending longitudinally along said sorter to a diverting rails in a diverting state. At least one of the diverters has a gate having a diverting surface. The gate is selectively rotatable between the diverting state and a non-diverting state about a generally horizontal axis. An actuator moves the gate between the non-diverting state and the diverting state. The actuator is an electrically operated rotary actuator that is rotatable about another generally horizontal axis of rotation.