Movable Ramp for Pallet Truck Transfer in Wrapping Systems

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Solution Overview

Problem

Conventional conveyor systems are inefficient and costly for transferring palletized loads to wrapping apparatuses due to mechanical complexity and space requirements, and existing solutions like ramp-type systems and conveyor cut-outs have not been feasible for pallet trucks with bottom plates, leading to issues with alignment and damage.

Innovation Solution

A conveyorized wrapping system with an infeed area featuring an inclined ramp and conveyor, including a movable portion to support the pallet truck's wheel assemblies and guide rails to align the pallet, allowing for efficient transfer of palletized loads onto the conveyor without damaging the pallet.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional conveyors are used to transport palletized loads, then productivity is improved, but device complexity and cost increase due to mechanical complexity and space requirements

Engineering Contradiction:
Improvetransport efficiencyVSAvoidmechanical complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The invention extracts the pallet truck from the conventional conveyor system by providing a separate transfer mechanism. The pallet truck operates independently and transfers loads to the conveyor through a simplified transfer point, eliminating the need for complex integration between manual forklift operations and automated conveyor systems.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention introduces an intermediary transfer mechanism that connects the pallet truck and conveyor. This intermediary allows smooth transition of palletized loads between manual and automated handling without requiring direct mechanical coupling, reducing overall system complexity while maintaining productivity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If conveyor cut-outs are used to transfer palletized loads, then device complexity is reduced, but reliability deteriorates due to alignment issues and damage to pallets

Engineering Contradiction:
Improvestructural simplicityVSAvoidload transfer reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The invention employs a movable transfer platform that can dynamically adjust its position and orientation. This dynamic mechanism ensures proper alignment between the pallet truck and conveyor during load transfer, preventing misalignment issues and pallet damage while maintaining structural simplicity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the geometric parameters of the transfer interface by providing an adjustable transfer platform. This allows modification of the transfer geometry to accommodate different pallet sizes and positions, ensuring reliable load transfer without damaging the pallet or causing misalignment.

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If ramp-type solutions are used to transfer palletized loads, then device complexity is reduced, but productivity deteriorates due to inefficient material handling

Engineering Contradiction:
Improvestructural simplicityVSAvoidmaterial handling efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The invention provides continuous material handling by enabling the pallet truck to load and unload continuously at the transfer point. The movable transfer platform allows uninterrupted operation, eliminating the need for ramp-type solutions that require periodic stopping and positioning adjustments.

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS8474223B2Apparatus for loading and unloading by pallet truck a wrapping surface
Publication Date: 2013.07.02 LANTECH COM LLC
  • US8474223B2 patent drawing
  • US8474223B2 patent drawing
  • US8474223B2 patent drawing

AI summary

An apparatus for transferring a palletized load between a pallet truck and a load wrapping surface may include a ramp configured to support at least a portion of the pallet truck. The ramp may include at least one fixed portion. The ramp may also include a movable portion configured to move relative to the fixed portion. The movable portion may be configured to support one or more wheel assemblies of the pallet truck, and move the one or more wheel assemblies of the pallet truck relative to the fixed portion.