Lettuce Leaf Stripping Roller for Gentle Wrapper Leaf Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The commercial produce industry faces a labor-intensive and inefficient process in removing wrapper leaves from harvested lettuce heads, which can damage the delicate produce during manual handling.
Innovation Solution
A mechanical apparatus comprising a conveyor, a rotating stripping roller, and flexible members that work together to remove wrapper leaves by exerting frictional force and loosening them as the produce moves, allowing for efficient removal without damaging the inner leaves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual removal of wrapper leaves is performed by field workers, then the delicate lettuce head can be handled with care, but the process is labor-intensive and inefficient
Solution Approach 1:
The stripping roller is designed to automatically remove wrapper leaves from lettuce heads as they pass through the apparatus, eliminating the need for manual intervention. The system serves itself by using the natural movement of the conveyor and the friction between the roller and produce to achieve leaf removal without human labor
Solution Approach 2:
The patent replaces the manual mechanical system (human hands removing leaves) with an automated mechanical system (rotating stripping roller). This substitution maintains the mechanical action of leaf removal while eliminating labor-intensive operations, improving productivity without requiring complex manual handling procedures
2Extent of automation
If a stripping roller exerts frictional force to remove wrapper leaves, then automation is achieved, but there is risk of damaging the delicate lettuce head
Solution Approach 1:
The stripping roller is designed with adjustable parameters including surface texture (smooth or textured), rotational speed, and contact pressure. These parameters can be optimized to provide sufficient friction for leaf removal while remaining gentle enough to protect the delicate lettuce head from damage
Solution Approach 2:
The stripping roller applies frictional force only to the outer wrapper leaves that need removal, while the inner delicate leaves are protected from direct contact with the roller. The flexible members also selectively engage only with wrapper leaves, leaving the produce head intact
3Productivity
If flexible members are used to loosen wrapper leaves, then removal efficiency is improved, but the device complexity increases
Solution Approach 1:
The flexible members are integrated with the existing conveyor and stripping roller system, combining multiple functions into a unified apparatus. The flexible members work in conjunction with the stripping roller and conveyor to create a coordinated leaf removal system without requiring entirely separate mechanisms
Solution Approach 2:
The use of flexible members (such as brushes or belts) provides an simple yet effective mechanism for loosening wrapper leaves. These flexible elements can conform to the shape of the produce and apply gentle loosening action without complex mechanical structures, maintaining device simplicity while improving removal efficiency
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 apparatus significantly reduces labor and damage to the produce by mechanically removing wrapper leaves, enhancing the efficiency of the processing and packaging of lettuce and other produce types.
Implementation Method 1
The stripping roller is connected to the framework, and is configured to rotate and exert a frictional force on the harvested produce to remove one or more wrapper leaves of the harvested produce
Data Source
AI summary
Wrapper leaves of a harvested produce can be removed using a leaf removal apparatus. The leaf removal apparatus includes a framework, a conveyor, a stripping roller, and a plurality of flexible members. The method of using the leaf removal apparatus includes feeding a harvested produce onto a conveyor; transporting the harvested produce on the conveyor towards a stripping roller connected to a framework of the leaf removal apparatus; and contacting the harvested produce with a plurality of flexible members connected to the framework, and the stripping roller.