Automated Wrapping Material Removal for Cellulosic Ethanol Bales
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Solution Overview
Problem
In cellulosic ethanol production, the manual removal of twine and net wrap from bales is cumbersome and time-consuming, and existing technologies lack an efficient automated solution capable of handling both square and round bales of varying sizes.
Innovation Solution
A system comprising a cutting device to sever the wrapping material, rollers to pull it away from the bale, and a spear system to secure and wind up the material for removal, allowing for automated processing of both square and round bales with minimal manual input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual removal of wrapping material is used, then labor flexibility is maintained, but processing time increases and productivity decreases
Solution Approach 1:
The system uses the bale's own weight and structure to assist in the removal process. The cutting device severs the wrapping material, and the bale's weight causes the cut ends to drop away automatically, eliminating the need for additional force application or complex removal mechanisms.
Solution Approach 2:
The wrapping material removal process is divided into distinct operational stages: cutting the wrapping material at specific locations, allowing cut ends to drop away, and collecting removed material. This segmentation enables each stage to be optimized independently for efficiency.
2Adaptability or versatility
If a single device handles both square and round bales, then versatility increases, but device complexity increases
Solution Approach 1:
The cutting device and support structure are designed to accommodate both square and round bales through adjustable components and universal cutting mechanisms that can adapt to different bale geometries without requiring complete system reconfiguration.
Solution Approach 2:
The system incorporates movable and adjustable components that can dynamically adapt to different bale types. The cutting device can be repositioned, and the support structure can adjust its configuration to suit either square or round bales, providing versatility without fixed complexity.
3Reliability
If wrapping material is not removed, then processing continuity is maintained, but mechanical failures occur in downstream processes
Solution Approach 1:
The wrapping material is removed at the beginning of the processing sequence, before the bale enters downstream processing equipment. This preliminary removal action prevents potential mechanical failures in downstream processes while maintaining continuous operation flow.
Solution Approach 2:
The wrapping material is extracted and separated from the bale at the cutting station. The cut ends drop away from the bale, and removed material is collected separately, ensuring that no wrapping material enters downstream processing equipment that could cause mechanical failures.
Data Source
AI summary
A material removal method for removing net wrap or twine from the outer surface of a bale of material. The method comprises the steps of cutting the net wrap or twine material along a length of the bale, placing a first spear (62, 162) of a material wind-up system (60, 160) between the bale and the material, rotating the material wind-up system to wind the net wrap or twine material around the first (62, 162) and a second spear (64, 164) and stripping the material from the first and second spears.