Segmented Shielding Lips for Bale Wrapper Wrapping Material Protection
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Solution Overview
Problem
Bale wrappers for round balers face issues with the shielding layer being raised by wind or crops, leading to contact with the upper compacting roller, resulting in folding or turning up/down, which compromises the shielding function and causes the wrapping material to stick or be carried by the upper roller, leading to incomplete wrapping.
Innovation Solution
A shielding layer with multiple parallel shielding lips or segments, made of elastic material, is designed to be partially affected by the compacting roller, allowing only segment-wise folding or turning up/down, ensuring the non-affected parts continue to protect the wrapping material, with tapered ends and detachable connections for easy replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a continuous shielding layer is used to protect the wrapping material end, then the shielding function is improved, but the layer is easily raised by wind or crops and contacts the upper compacting roller causing folding or turning, which compromises the shielding function
Solution Approach 1:
The continuous shielding layer is divided into multiple discrete shielding lips arranged parallel to each other along the width of the bale chamber. Each shielding lip acts as an independent segment that can be partially affected by the compacting roller without causing the entire layer to fold or turn. This segmentation maintains the shielding function while reducing the stability problem.
2Reliability
If the shielding layer is made of elastic material to allow partial deformation, then the protection of wrapping material is maintained, but the device complexity increases due to multiple shielding lips and detachable connections
Solution Approach 1:
The shielding layer is segmented into multiple independent lips that can be individually attached to a shielding lip holder using detachable connections. This segmentation allows the structure to accommodate complexity while maintaining reliability, as each segment can function independently and be replaced separately if needed.
Solution Approach 2:
The shielding lips are made of elastic material that allows them to deform partially when contacted by the compacting roller. This parameter change in material properties enables the shielding lips to absorb contact forces through elastic deformation rather than rigid resistance, maintaining their protective function while accommodating the increased structural complexity.
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
This design minimizes the problems of incomplete wrapping and material sticking by allowing partial deformation of the shielding layer, ensuring effective protection and uninterrupted wrapping material transport, preventing the wrapping material from being carried by the upper compacting roller.
Implementation Method 1
a shielding layer with multiple parallel shielding lips or segments, made of elastic material, is designed to be partially affected by the compacting roller, allowing only segment-wise folding or turning up/down
Data Source
AI summary
A bale wrapper and a round baler with such a device are described. The bale wrapper comprises a supply device, extending along the width of a bale chamber of a round baler, for the introduction of wrapping material. The supply device comprises a shielding layer, located on its upper side, for the upper-side shielding of a free end of the wrapping material, to be introduced into the bale chamber. In order to improve the supply operation of wrapping material into the bale chamber, the shielding layer comprises several shielding lips, located parallel to one another along the width of the bale chamber, which extend in the direction of an interior of the bale chamber.