Pivotable Guide Frame for Uniform Bale Wrapping
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Solution Overview
Problem
Existing wrapping devices for agricultural crop bales require significant construction space, are complex, and struggle with uniform wrapping due to lack of vertical positioning for different bale diameters, leading to inefficient use of space and stability issues during transport.
Innovation Solution
A wrapping device with a height-adjustable and pivotable guide frame about a horizontal axle parallel to the bale's rotation axis, allowing for central positioning of wrapping material, which can be adjusted for different bale diameters and widths using sensors and control devices, enabling compact design and stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a translational sliding movement mechanism is used to adjust the guide frame height, then the wrapping quality can be maintained for different bale diameters, but the construction space requirement increases significantly
Solution Approach 1:
The guide frame is made dynamically adjustable through a height-adjustment device that enables translational movement along the vertical direction. This allows the guide frame to adapt its position for different bale diameters while maintaining compact overall dimensions, resolving the contradiction between wrapping precision and space requirement
Solution Approach 2:
The guide frame adjustment mechanism utilizes vertical dimensional movement to achieve positioning for different bale sizes. By moving along the vertical axis rather than requiring horizontal space expansion, the system maintains compact construction footprint while achieving the necessary positioning precision
2Manufacturing precision
If the guide frame is made height-adjustable for different bale diameters, then uniform wrapping quality is achieved, but the device complexity increases
Solution Approach 1:
The height-adjustment device serves multiple functions: it positions the guide frame for different bale diameters, enables compact transport configuration, and maintains wrapping precision. This multi-functionality reduces the need for separate adjustment mechanisms, thereby limiting the increase in device complexity while achieving uniform wrapping quality
3Manufacturing precision
If the wrapping table is lifted or lowered to position the wrapping material centrally, then wrapping quality is improved, but the mechanism complexity and space requirements increase
Solution Approach 1:
Instead of moving the wrapping table with the bale to achieve central positioning of wrapping material, the invention inverts the approach by moving the guide frame and wrapping material carriers relative to the stationary wrapping table. This inversion simplifies the mechanism by avoiding the need to lift or lower large masses while achieving the same wrapping precision
Data Source
AI summary
The invention relates to a wrapping device for enveloping or packing in particular agricultural crop bales, including a wrapping floor for receiving and rotating the pressed crop bale and a guide frame for at least one wrapping material carrier for wrapping the bale on the wrapping floor with wrapping material in the form of webs, wherein the guide frame is height adjustable, in order to set the center of the wrapping material approximately at the location of the center of the crop bale to be wrapped. In order to be able to adapt wrapping devices having a guide frame to bales of different bale diameters, the guide frame should be pivotable about a horizontal axle which is situated parallel to the axis of rotation of the crop bale.