Baler Film Binding Blocking Element Guide
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Solution Overview
Problem
In balers, the lead-in end of film binding material often fails to follow the surface of compressed bale material, leading to incomplete binding and potential bale disintegration upon ejection, as it may wind around pressing elements or escape the bale chamber, necessitating re-baling.
Innovation Solution
Incorporating blocking elements or endless belts between pressing elements to prevent the lead-in end of the film from passing through the gap, ensuring it remains in contact with the bale surface, and using guide elements near the feed opening to direct the film back onto the bale, thereby maintaining continuous binding and preventing film escape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lead-in end of film is fed between pressing elements, then binding material is introduced into the bale chamber, but the lead-in end may escape through the gap between rollers and wind around pressing elements
Solution Approach 1:
A guide element is introduced as an intermediary component between the pressing elements. This guide element has a guiding surface that directs the lead-in end of the film along the curved surface of the bale, preventing it from escaping through the gap between rollers while maintaining the film feeding process
Solution Approach 2:
The guide element provides continuous contact with the lead-in end of the film through its guiding surface, creating a feedback mechanism that ensures the film follows the correct path around the bale curvature and prevents deviation that would lead to escaping or winding around pressing elements
2Strength
If bundling the film lead-in is implemented, then film stiffness increases and tendency to stick to pressing elements reduces, but the problem is not fully eliminated
Solution Approach 1:
The guide element serves as a mediator between the bundled film lead-in and the pressing elements. Even though the film is bundled and stiffer, the guide element's curved surface ensures proper alignment and contact, preventing any residual tendency to escape or wind around the pressing elements
3Reliability
If blocking elements are added to prevent film escape, then binding reliability improves, but device complexity increases
Solution Approach 1:
The guide element is designed as a simple intermediary component with a curved guiding surface that naturally directs the film without requiring complex blocking mechanisms. This maintains binding reliability while minimizing increases in device complexity
Solution Approach 2:
The guide element utilizes a thin-walled cylindrical structure that is simple in form but effective in function, providing the necessary guidance surface without adding significant complexity to the binding system
Data Source
Figure 1
Figure 2a~2c
Figure 3
AI summary
A baler (102) includes a plurality of pressing elements (120,202) for pressing a mass of bale material in a bale chamber (114) to form a round bale, and a binding apparatus (138) for binding the bale in the bale chamber with film material (205). The baler further includes a blocking element (204) between an adjacent pair of pressing elements to block the passage of a lead-in end of the film material between the pair of pressing elements.