Wrapping Material Feeding Apparatus for Round Balers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In round balers, the challenge lies in successfully inserting wrapping material into a chamber inlet, especially when debris is present, due to the inlet's narrow design and varying orientation, which can hinder the feeding process and require additional cleaning mechanisms or sensors.
Innovation Solution
A feeding apparatus with a pushing unit that laterally pushes the sagging loose end of the wrapping material into the inlet, combined with a closing unit that prevents debris from dropping into the inlet, allowing for efficient wrapping material insertion without the need for precise synchronization or additional cleaning units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inlet is designed to be narrow to prevent material drop, then material containment is improved, but wrapping material insertion becomes difficult
Solution Approach 1:
The loose end area of the wrapping material is allowed to sag down and extend downward in advance before insertion. This preliminary sagging creates a flexible leading portion that can be easily pushed into the narrow inlet, resolving the contradiction between narrow inlet design and easy insertion.
Solution Approach 2:
The pushing unit acts as an intermediary element that transfers force to the sagging loose end area. It pushes the loose end laterally towards the inlet, enabling insertion without requiring the inlet to be wide or requiring complex synchronization mechanisms.
2Reliability
If debris cleaning mechanisms or sensors are added to handle debris in the inlet, then reliability is improved, but device complexity increases
Solution Approach 1:
The closing unit automatically prevents debris from dropping into the inlet area by closing it, and the pushing unit automatically pushes the wrapping material into the inlet. This self-service mechanism eliminates the need for separate debris cleaning mechanisms or sensors, maintaining reliability while avoiding increased complexity.
Solution Approach 2:
The closing unit converts the potential harm of debris dropping into the inlet by preventing it from doing so. By closing the inlet area, debris is kept out naturally without requiring active cleaning mechanisms, transforming a potential problem into a simple preventive structure.
3Manufacturing precision
If precise synchronization is required for wrapping material insertion, then insertion precision is improved, but ease of operation deteriorates
Solution Approach 1:
The loose end area sags down and extends downward in advance, creating a pre-positioned leading portion ready for insertion. This preliminary positioning eliminates the need for precise synchronization during the actual insertion process, as the material is already in the correct position to be pushed in.
Solution Approach 2:
The closing unit and pushing unit operate dynamically without requiring precise synchronization. The closing unit closes the inlet area and the pushing unit pushes the material independently, with their actions coordinated by the system rather than requiring precise timing synchronization, simplifying operation.
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 solution ensures reliable insertion of wrapping material into the chamber even with debris, reducing the risk of jamming and increasing the feeding apparatus' availability across different environments and wrapping material types, eliminating the need for debris sensors and specific cleaning units.
Implementation Method 1
a leading portion of this wrapping material sags down and forms a loose end area
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention refers to an apparatus and a method for feeding wrapping material (WM) towards an inlet (N.1) of a chamber. An object (B) in this chamber is to be wrapped with this wrapping material (WM). A wrapping material supplying unit (S.1, S.2) supplies wrapping material (WM) from a reservoir (RL). A leading portion of the wrapping material (WM) forms a loose end area (LEA) which sags down, increases until it reaches the inlet (N.1) and must not drop into an area (Ar). A closing unit (CU) is at least temporarily operated in a closing position in which it closes at least partially the area (Ar). Preferably the closing unit (CU) is pivoted from a parking position into the closing position. The closing unit (CU) inhibits the loose end area (LEA) from dropping into the area (Ar). Afterwards a pushing unit (PU) is moved in an engaging direction (ED), hits the loose end area (LEA) laterally and pushes it towards the inlet (N.1). Preferably a wrapping material conveying unit (WU) further conveys the loose end area (LEA) by means of a driven conveying surface (CS).