Pallet Wrapping Apparatus with Multi-Spool Film Guides
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Solution Overview
Problem
Existing pallet wrapping technologies either completely seal palletized loads with stretch film, which is not suitable for materials requiring air circulation, or use netting/ropes, which may not provide adequate protection against damage.
Innovation Solution
A pallet wrapping and roping apparatus that uses a spool support system with multiple rolls of stretch film, guides, and a pre-stretch carriage to form and apply overlapping bands of stretch film without cutting, allowing for secure wrapping while maintaining air circulation and preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If palletized loads are completely wrapped in stretch film, then protection against damage and shifting is improved, but air circulation is blocked causing condensation buildup
Solution Approach 1:
The continuous stretch film is segmented into multiple separate bands by passing it through multiple guides. These discrete bands provide protection while leaving gaps between them for air circulation, thus preventing condensation buildup while maintaining damage protection.
Solution Approach 2:
Different regions of the palletized load receive different wrapping patterns. Some areas are covered with stretch film bands for protection, while other areas remain exposed for air circulation. This localized application of protection allows simultaneous achievement of damage prevention and ventilation.
2Productivity
If multiple rolls of stretch film are used on a single spool, then productivity is improved by reducing spool changes, but device complexity increases
Solution Approach 1:
Multiple rolls of stretch film are merged onto a single spool, allowing continuous operation without frequent spool changes. This consolidation improves productivity by reducing interruptions while the complexity is managed through a unified support structure.
Solution Approach 2:
The spool support member is designed to universally accommodate multiple rolls of stretch film simultaneously. This multi-functional capability allows the system to handle various wrapping requirements while maintaining a single, integrated support mechanism rather than requiring separate supports for each roll.
3Object-generated harmful factors
If stretch film is passed through multiple guides to form bands, then air circulation is enabled, but manufacturing precision requirements increase
Solution Approach 1:
The guides are pre-positioned and fixed in specific locations before the wrapping operation begins. This preliminary setup ensures that the stretch film bands are formed with consistent spacing and alignment, reducing the precision requirements during actual operation while still achieving proper air circulation gaps.
Data Source
AI summary
Pallet roping and wrapping machines having a plurality of spools of stretch film supported on a single spool and guides that form ropes of stretch film without cutting. Specific implementations of guides include guides formed of rings and rollers. Positions of guides may be adjustable. A first roll of stretch film may be used with a second roll of stretch film, where the second roll of stretch film is narrowed into ropes and combined with a web from the first roll of stretch film. The combination of film from the first roll of stretch film and narrowed film from the second roll of stretch film may be pre-stretched prior to be applied to a load.