Bale Receptacle Fork Design for Contamination-Free Transport
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Solution Overview
Problem
Existing bale pressing technologies face challenges in efficiently transporting and packaging highly compressed bales, particularly due to the high precompressing pressure requirements and material properties like fiber bales, which demand robust and flexible handling systems to manage elastic stress and environmental protection.
Innovation Solution
A transporting device with a bale receptacle designed as a supporting fork, using elongated support elements to hold and move pressed bales between presses and packaging systems, allowing for flexible and cost-effective operation without movable parts in contact with the bale, and a packaging system that uses a film curtain to wrap bales with minimal tension and shearing load, enabling the use of thinner films and reducing contamination risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a film curtain is used to wrap pressed bales during transporting, then the bales are protected from contamination and environmental factors, but the film requires high load-bearing capacity and thickness of 100 μm or more to prevent tearing under high precompressing pressure
Solution Approach 1:
The bale is precompressed to a lower density before the film wrapping process, reducing the mechanical stress on the film during handling and transport. This preliminary compression step allows the use of thinner, more environmentally friendly film materials that would otherwise tear under higher pressures.
Solution Approach 2:
The patent employs thin film materials (less than 100 μm) for bale wrapping, replacing the conventional thick film requirement. Through optimized compression sequences and film application techniques, the system achieves adequate protection with reduced material thickness, lowering both material consumption and environmental impact.
2Productivity
If high precompressing pressure is applied to produce highly compressed pressed bales, then the bale density and handling efficiency are improved, but the film wrapping system requires thicker and more expensive film material to prevent tearing
Solution Approach 1:
The compression process is divided into stages: an initial low-pressure phase for film application, followed by a final high-pressure phase for dense bale formation. This preliminary action sequence allows efficient high-density bales to be produced while using thinner film that won't tear during the process.
Solution Approach 2:
The patent changes the compression pressure parameters over time, applying lower pressure during film wrapping and higher pressure after wrapping is complete. This dynamic parameter adjustment maintains productivity while reducing film material requirements from the conventional 100 μm thickness.
3Ease of operation
If the press box is designed with displaceable walls and extended underside to form a channel for bale transport, then the bale can be pushed directly into the finishing press, but the system requires complex movable parts and higher manufacturing costs
Solution Approach 1:
The press box is divided into separate functional modules: a fixed compression chamber and a separate bale ejection mechanism. This segmentation allows simple, stationary press boxes to transfer bales effectively without requiring complex displaceable walls or extended undersides, reducing manufacturing costs while maintaining operational ease.
Solution Approach 2:
The bale ejection and transfer function is extracted from the press box structure itself and implemented as a separate, simple mechanism. This removes the need for complex movable press box components, simplifying the overall structure while preserving the ability to push bales directly into the finishing press.
4Reliability
If a transporting device with support elements in contact with the bale is used, then the bale can be securely held during transport, but movable parts increase the risk of contamination and require more maintenance
Solution Approach 1:
The bale holding function is extracted from contact-based support elements and implemented through a non-contact mechanism. The transporting device uses atmospheric pressure differentials or magnetic fields to secure the bale during transport, eliminating movable contact parts that could contaminate the bale or require maintenance.
Solution Approach 2:
An intermediary field (such as a magnetic field or pressure differential) is introduced between the transporting device and the bale to provide secure holding without physical contact. This intermediary mechanism maintains bale security during transport while eliminating contamination risks associated with direct contact with movable support parts.
Data Source
AI summary
A packaging apparatus for compressed pressed bales (25) is designed to apply a bale packaging (32) to the pressed bale (25) and has a transporting device (5), which is designed to remove a compressed pressed bale (25) from a press (3, 3′). The transporting device (5) has a movable bale receptacle (6) for picking up the compressed pressed bale (25) on two opposite sides, wherein the bale receptacle has several elongated support elements (20) arranged at a distance from one another on each of the areas intended to retain the pressed bale.