Bale opener removal arm height control via load cell
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Solution Overview
Problem
Existing bale openers require complex sensor systems for precise height adjustment and positioning of the removal arm, leading to operational complexity and inefficiency in fiber tuft removal from fiber bales.
Innovation Solution
A force-dependent height adjustment mechanism using load cells integrated into the lifting mechanism of the removal arm, allowing direct measurement of contact force and control of the lifting mechanism to optimize fiber tuft removal, with guidance designed to absorb transverse forces and ensure precise longitudinal movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex sensor systems are used for height adjustment and positioning of the removal arm, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the height adjustment control from complex sensor-based systems and implements it through a purely mechanical force-dependent mechanism. The removal arm's height is automatically adjusted by the force of fiber bale contact itself, eliminating the need for separate sensors, actuators, and control systems while maintaining precise positioning.
Solution Approach 2:
The removal arm system performs self-positioning through force-dependent height adjustment. The arm automatically adjusts its height based on the contact force with the fiber bale, using the workpiece itself as the control input rather than requiring external sensing and actuation systems.
2Manufacturing precision
If multiple sensors and adjustment mechanisms are installed on the removal arm, then height control accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The removal arm automatically adjusts its own height through force-dependent mechanisms without requiring external control systems. The system uses the contact force from the fiber bale itself to drive the height adjustment, eliminating complex operation procedures while maintaining high control accuracy.
Solution Approach 2:
The system implements force-dependent feedback where the contact force between the removal arm and fiber bale directly influences the height adjustment. This automatic feedback loop maintains optimal contact force and height positioning without requiring external sensors or complex control algorithms.
3Measurement precision
If force measurement is integrated into the lifting mechanism, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent merges the force measurement function with the lifting mechanism itself. The load cell is integrated into the lifting structure, allowing contact force measurement to be performed as a byproduct of the lifting operation without adding separate measurement systems.
Solution Approach 2:
The lifting mechanism serves multiple functions: it provides height adjustment and simultaneously measures contact force through the integrated load cell. This multi-functionality eliminates the need for separate measurement devices while maintaining measurement precision.
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
Simplifies the control of the removal arm's height adjustment, enhances the precision and efficiency of fiber tuft removal by directly measuring contact force, and reduces operational complexity, ensuring consistent fiber bale processing.
Implementation Method 1
the lifting mechanism having at least one load cell
Data Source
Figure 1~2
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AI summary
The invention relates to a bale opener (1) for removing fiber flakes from fiber bales (2) with a removal tower (3) arranged on a chassis (4) or turntable and with a removal arm (5). The removal arm (5) is held height-adjustably on the removal tower (3) in a guide (7). A lifting mechanism (6) is provided for adjusting the height of the removal arm (5), wherein the lifting mechanism (6) is attached to the removal arm (5) and to the removal tower (3) and the lifting mechanism has at least one load cell (10). The removal arm (5) is attached to the load cell (10) either suspended freely via the lifting mechanism (6) or freestanding on the load cell (10).