Adjustable Package Flow Stop Wall for Ergonomic Handling

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Solution Overview

Problem

Material handling facilities face challenges in ensuring safe, ergonomic, and efficient systems for grasping, lifting, and transferring packages of varying sizes and weights, as existing systems often require manual handling that can lead to ergonomic issues and inefficiencies.

Innovation Solution

An adjustable package flow stop wall system that moves between extended, intermediate, and retracted positions to facilitate easier handling of packages, incorporating a frame assembly, wall assembly, pedal assembly, and handle assembly, with counterweights and sensors for automated control, allowing agents to process packages with reduced reaching and lifting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If packages are manually handled for storage, picking, packing, and shipping, then the material handling processes can be performed with simple equipment, but ergonomic issues and safety concerns arise due to repeated grasping, lifting, and transferring of packages of varying sizes and weights

Engineering Contradiction:
ImproveergonomicsVSAvoidsystem complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The stop wall assembly is made dynamically adjustable between extended and retracted positions through a pedal assembly mechanism. This allows the wall to move from blocking package flow (extended position) to allowing free flow (retracted position), enabling ergonomic package handling without requiring complex automated handling systems throughout the entire facility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The stop wall assembly acts as an intermediary device between package storage areas and processing stations. It mediates package flow by selectively blocking or allowing passage, reducing the need for manual package manipulation while maintaining simple overall system architecture.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If the stop wall is positioned to block package flow for accumulation, then packages can be held for processing, but agents must reach and lift packages which creates ergonomic strain

Engineering Contradiction:
Improvepackage accumulationVSAvoidmanual handling strain
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The stop wall's dynamic positioning allows it to be extended for package accumulation during non-processing periods, then retracted when agents need to access packages. This eliminates continuous manual reaching and lifting strain while maintaining productivity during peak processing times.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The stop wall operates periodically - extended to accumulate packages, then retracted to allow access. This periodic action pattern matches processing cycles, enabling package accumulation when not needed while minimizing ergonomic strain during actual handling operations.

Inventive Principle:
Principle #19Periodic action

3Ease of operation

If the stop wall is retracted to allow free package flow, then agents can easily access packages, but packages cannot be accumulated or held for processing

Engineering Contradiction:
Improvepackage accessibilityVSAvoidpackage accumulation capability
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The stop wall's ability to dynamically change position allows it to provide package accessibility when retracted and accumulation capability when extended. This single dynamic component resolves the contradiction by adapting to different operational requirements without requiring separate systems.

Inventive Principle:
Principle #15Dynamics

4Productivity

If fixed stop walls are used to control package flow, then package accumulation is possible, but the system cannot adapt to different package sizes and processing requirements

Engineering Contradiction:
Improvepackage flow controlVSAvoidadaptability to varying packages
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The stop wall assembly replaces fixed walls with a dynamically adjustable mechanism controlled by the pedal assembly. This allows the system to adapt to different package sizes, weights, and processing requirements by adjusting the wall position, while maintaining effective package flow control through the same mechanism.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11401116B1Adjustable package flow stop wall systems and associated methods
Publication Date: 2022.08.02 AMAZON TECH INC
  • US11401116B1 patent drawing
  • US11401116B1 patent drawing
  • US11401116B1 patent drawing

AI summary

Adjustable package flow stop wall systems and associated methods may operate as part of package processing stations, in order to facilitate accumulation and transfer of packages from inbound collection areas to outbound conveyances. For example, an adjustable package flow stop wall may include a wall assembly, a frame assembly, a pedal assembly, and/or a handle assembly. The wall assembly may selectively extend above the upper surface of a station between a plurality of positions, e.g., a closeout position, an active position, and a flush position, and the pedal and/or handle assemblies may be actuated to cause movement of the wall assembly. Further, the adjustable package flow stop wall may include one or more sensors, actuators, and/or input elements to enable movement of the wall assembly at least partially or fully automatically, which movements may be based on detected agents and/or packages and associated characteristics.