Agricultural Round Baler Edge Wrapping Control
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Solution Overview
Problem
Existing agricultural round balers face challenges in effectively wrapping net material around the edges of cylindrical bales, leading to issues such as excessive moisture retention and interference with unwrapping, and lack the operator's ability to selectively choose whether to wrap the edges.
Innovation Solution
A mechanism that adjusts the width of the wrapping material as it is applied to the bale, allowing for the selective wrapping of edges by modifying the position of spreading rollers or using guides to direct the material away from the edges, providing options to either wrap or not wrap the edges without changing the wrapping material roll.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If netwrap is extended around the edge of the round bale, then the appearance of the round bale is improved and additional protection is afforded, but the netwrap delivery assembly becomes more complex and timing synchronization becomes difficult
Solution Approach 1:
The netwrap delivery assembly incorporates movable spreading rollers that can adjust their position dynamically. The rollers are mounted on adjustable arms that allow the spreading width to be changed, enabling the system to adapt to different bale sizes and wrapping requirements without increasing fundamental system complexity
Solution Approach 2:
The system allows operators to change the spreading parameter by adjusting the position of the spreading rollers relative to the bale. This parameter adjustment enables edge wrapping when needed while maintaining simplicity by using the same basic assembly with modified positioning
2Reliability
If netwrap is extended around the edge of the round bale, then additional protection is afforded, but moisture retention increases and unwrapping is interfered with
Solution Approach 1:
The system applies netwrap with different coverage qualities to different regions of the bale. The spreading rollers can be positioned to provide full edge coverage on the cylindrical portion while controlling or reducing wrap extension at the ends, allowing operators to optimize protection while minimizing moisture retention issues in specific locations
3Ease of manufacture
If the netwrap delivery assembly is simplified for variable sized baling chambers, then the assembly becomes easier to manufacture, but the ability to effectively form cylindrical bales is reduced
Solution Approach 1:
The netwrap delivery assembly uses adjustable spreading rollers mounted on movable arms that can be repositioned to accommodate different bale sizes. This dynamic adjustment capability allows the same simplified assembly to effectively wrap both small and large cylindrical bales without requiring complex dedicated mechanisms for each size
Data Source
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AI summary
A round baler comprises a mechanism 18 for encircling a bale 10 after it has been formed with a wrapping material 30 drawn from a web on a supply roll 16. In the invention, means 102,302 are provided for adjusting the width of the web of wrapping material 30 as it is offered to a formed bale 10, so as to selectively enable and disable the wrapping of the edges of the bale 10.