Adaptive Strap Tension Control for Reliable Load Strapping
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Solution Overview
Problem
Existing strapping devices fail to detect and adjust for under- or over-tensioned strap loops, leading to potential strap joint failure or load damage, with operators relying on trial-and-error adjustments.
Innovation Solution
A strapping device equipped with a force sensor and controller that dynamically adjusts tension parameters based on measured force data to ensure the strap tension is within a designated range, automatically correcting for under- or over-tensioned loops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the strapping head tensions the strap using a tension module, then the strap loop is secured around the load, but the tension may be inconsistent leading to under-tensioned or over-tensioned strap loops
Solution Approach 1:
The system uses a force sensor to measure the actual tension in the strap loop and feeds this information back to the controller. The controller compares the measured tension to the target tension and automatically adjusts the tension module parameters for subsequent strapping operations, creating a closed-loop feedback system that eliminates the need for manual trial-and-error adjustments and ensures consistent tension precision.
Solution Approach 2:
The strapping device performs self-adjustment by automatically modifying its own tension parameters based on force sensor measurements. The system serves itself by detecting tension deviations and correcting them without operator intervention, thereby maintaining both reliability and precision over time despite component wear.
2Manufacturing precision
If the operator manually adjusts the tension parameter to correct under- or over-tensioned strap loops, then the strap tension can be optimized, but this requires trial-and-error and operator intervention
Solution Approach 1:
The system automatically detects tension deviations through the force sensor and adjusts the tension parameter without requiring operator intervention. This self-service capability eliminates the need for operators to perform trial-and-error adjustments, maintaining precision while simplifying operation.
Solution Approach 2:
The force sensor provides continuous feedback to the controller, which automatically adjusts tension parameters based on measured values. This automated feedback loop replaces manual operator adjustments, making the system easier to operate while maintaining high precision.
3Ease of operation
If the strapping device uses a fixed tension parameter, then the strapping process is simple to operate, but the tension module wear causes inconsistent strap tension over time
Solution Approach 1:
The force sensor continuously monitors strap tension and provides feedback to the controller, which automatically adjusts tension parameters to compensate for component wear. This maintains reliability over time while requiring minimal operator intervention, as the system self-corrects tension deviations.
Solution Approach 2:
The system transitions from a static, fixed tension parameter to a dynamic, adaptive tension parameter that automatically adjusts based on real-time force measurements. This dynamic adjustment compensates for component wear and maintains reliability without complicating operation.
4Reliability
If the strap is over-tensioned to ensure secure loading, then the load is well-secured, but the strap joint has higher likelihood of failure and the load may be damaged
Solution Approach 1:
The force sensor measures the actual tension applied to the strap loop and provides feedback to the controller. The controller uses this information to adjust tension parameters, ensuring the strap is tensioned to the optimal level—secure enough to hold the load but not so tight as to cause joint failure or load damage.
Solution Approach 2:
The system dynamically changes the tension parameter based on force sensor measurements to achieve the optimal tension level. By adjusting the tension parameter within a designated range, the system prevents both under-tensioning (inadequate security) and over-tensioning (joint failure or load damage).
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 device consistently secures loads with optimal strap tension, preventing joint failure and load damage by automatically adjusting tension settings without operator intervention.
Implementation Method 1
a force sensor configured to detect an amount of force applied to the force sensor
Data Source
AI summary
Various embodiments of the present disclosure provide a strapping device with a force-measurement system, that, responsive to determining that a strap on a load is under tensioned causes subsequent tensioning of straps to be increased, and responsive to determining that a strap on a load is over tensioned causes subsequent tensioning of straps to be decreased.