Demand-Based Wrapping Control System for Load Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing packaging systems face challenges in wrapping non-square loads efficiently, leading to excess material usage and breakage due to erratic speed changes and inadequate control over wrap force, especially at high wrapping speeds.
Innovation Solution
A control system that includes sensors to monitor instantaneous demand for packaging material and a controller to adjust the dispensing drive accordingly, ensuring consistent wrap force and minimizing material breaks by dynamically adjusting the dispensing speed based on load characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional constant-speed dispensing is used, then the system is simple to operate, but packaging material breaks occur and wrap force becomes inconsistent when wrapping non-square loads
Solution Approach 1:
The dispensing system transitions from constant-speed operation to variable-speed operation, dynamically adjusting the dispensing rate based on real-time feedback from sensors that detect load characteristics. This allows the system to adapt to different load shapes and sizes, preventing material breaks and maintaining consistent wrap force.
Solution Approach 2:
Sensors monitor the wrapping process in real-time, detecting variations in load geometry and packaging material tension. This feedback information is used by the control system to continuously adjust the dispensing speed, ensuring that the supply rate matches the demand rate and preventing both material breaks and excessive looseness.
2Productivity
If high wrapping speeds are used, then productivity increases, but wrap force control becomes inadequate and material breaks increase
Solution Approach 1:
The system incorporates real-time feedback mechanisms that monitor packaging material tension and load characteristics at high wrapping speeds. This enables the control system to make rapid adjustments to the dispensing rate, maintaining consistent wrap force even at elevated productivity levels where inertial effects would normally cause control instability.
Solution Approach 2:
The dispensing system dynamically changes operational parameters (dispensing speed, acceleration rates) based on real-time conditions. At high wrapping speeds, the system adjusts these parameters to compensate for inertial effects and maintain optimal wrap force, preventing material breaks while preserving high productivity.
3Reliability
If excess packaging material is supplied to accommodate non-square loads, then material breaks are reduced, but material waste increases and wrap force becomes inconsistent
Solution Approach 1:
The system dynamically adjusts the packaging material supply rate to match the instantaneous demand of the load being wrapped. Rather than using a fixed excess supply rate, the system modulates the dispensing speed in real-time, providing additional material only when and where it is needed for non-square load geometries, thereby eliminating waste while maintaining material integrity.
Solution Approach 2:
The dispensing system changes the supply rate parameter dynamically based on detected load characteristics. When sensors identify corners or irregular geometries that require additional material, the system increases the dispensing rate locally; otherwise, it maintains optimal material usage, preventing both breaks and waste.
4Productivity
If the dispensing speed is increased to match high demand rates, then productivity improves, but packaging material breaks occur due to excessive tension
Solution Approach 1:
The system employs dynamic speed profiling that adjusts dispensing acceleration and velocity based on real-time tension feedback. When high demand rates are detected, the system increases speed while simultaneously managing acceleration rates to prevent excessive tension buildup, thereby maintaining both high productivity and material integrity.
Solution Approach 2:
The control system dynamically changes multiple parameters including dispensing speed, acceleration rate, and tension management settings. These coordinated parameter changes allow the system to operate at high speeds while preventing packaging material breaks by ensuring that tension remains within safe limits even during rapid acceleration and high-speed operation.
Data Source
AI summary
A control system for a wrapping apparatus may include a packaging material dispenser configured to dispense packaging material for wrapping a load. The control system may also include at least one sensor assembly configured to generate a signal based on instantaneous demand for packaging material at the load. The control system may further include a controller configured to control operation of the packaging material dispenser based at least in part on the signal.