Cascading Conveyor Delayering With Pulsed Speed Differentials

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Solution Overview

Problem

Existing parcel processing systems face inefficiencies in delayering multi-layered parcels, leading to incomplete separation and increased manual intervention due to inadequate velocity control and duty cycles in conveyor-based systems.

Innovation Solution

A multi-stage conveyor system with high-friction belts and pulsation in velocity, where each stage operates at a higher velocity and duty cycle than the previous one, abruptly varying between minimum and maximum velocities to enhance shearing and delayering efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional conveyor systems with fixed velocity are used for parcel delayering, then the system structure is simple, but the delayering completeness is insufficient and manual intervention is required

Engineering Contradiction:
Improvedelayering completenessVSAvoidvelocity control system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The conveyor system transitions from fixed velocity to dynamic velocity control, where each conveyor section operates at variable speeds. The controller adjusts velocities dynamically based on throughput conditions, enabling effective delayering through speed differential between sections while maintaining system adaptability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The conveyor system is divided into multiple independent conveyor sections, each capable of operating at different velocities. This segmentation allows independent control of each section to optimize delayering effectiveness while managing overall system complexity through modular architecture.

Inventive Principle:
Principle #1Segmentation

2Productivity

If higher throughput is achieved in parcel processing, then productivity increases, but delayering effectiveness decreases due to insufficient velocity differentiation

Engineering Contradiction:
Improveparcel processing throughputVSAvoiddelayering effectiveness
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The system dynamically adjusts velocity differentials between conveyor sections based on real-time throughput conditions. During high throughput operations, increased speed differences are applied to maintain delayering effectiveness, while during lower throughput, reduced differentials suffice, allowing the system to adapt to varying productivity requirements.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The controller modifies operational parameters (velocities and duty cycles) of conveyor sections in response to changing throughput conditions. By varying these parameters dynamically, the system maintains optimal delayering effectiveness across different productivity levels without requiring fixed operational settings.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If fixed duty cycles are used in conveyor operation, then system operation is simple, but delayering accuracy is insufficient for high-precision processing

Engineering Contradiction:
Improvedelayering accuracyVSAvoidduty cycle control complexity
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The controller implements feedback-based duty cycle adjustment by monitoring operational conditions and throughput levels. Based on this feedback, the system automatically modifies duty cycles of conveyor sections to optimize delayering accuracy, reducing the need for manual intervention while maintaining high precision processing.

Inventive Principle:
Principle #23Feedback

4Manufacturing precision

If manual intervention is used for incomplete delayering, then delayering completeness can be improved, but automation level decreases and processing time increases

Engineering Contradiction:
Improvedelayering completenessVSAvoidautomatic processing level
Core Design Contradiction:
Manufacturing precisionVSExtent of automation

Solution Approach 1:

The conveyor system performs self-adjustment through automated velocity and duty cycle control, eliminating the need for manual intervention in delayering operations. The controller continuously monitors and adjusts operational parameters to maintain complete delayering, allowing the system to serve itself and achieve high completeness while maintaining full automation.

Inventive Principle:
Principle #25Self-service

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 effectively delayers parcels into a single layer, reducing exceptions and improving processing accuracy by leveraging gravity and inertia to separate layers, resulting in more efficient and accurate output.

Implementation Method 1

One or more of the conveyors has a high-friction belt which is inclined in a direction of travel

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

a first conveyor section discharges from above onto a second conveyor section

Methodology Applied
Scientific EffectGravity: Gravitation

Implementation Method 3

adding pulsation in a velocity of the conveyors... repeatedly and abruptly varied between a predetermined minimum velocity and a predetermined maximum velocity for each stage, to increase shearing between layered, inclined parcels

Methodology Applied
Scientific EffectInertia: Inertia

Data Source

PatentEP3296236B1Parcel delayering systems and methods for automatic parcel processing based on accurate de-layering
Publication Date: 2021.10.27 SIEMENS INDUSTRY INC
  • EP3296236B1 patent drawingFigure 1
  • EP3296236B1 patent drawingFigure 2
  • EP3296236B1 patent drawingFigure 3

AI summary

Systems, methods, and machine-readable media for delayering parcels. A parcel delayering system for automatic processing of a plurality of parcels includes a multi-stage arrangement of sequential cascading conveyors configured for de-layering the plurality of parcels. One or more of the conveyors has a high-friction belt which is inclined in a direction of travel and arranged such that a first conveyor section discharges from above onto a second conveyor section. The parcel delayering system includes a system or processor configured to progressively increase a duty cycle from stage to stage of the multi-stage arrangement of sequential cascading conveyors by adding pulsation in a velocity of the conveyors.