Cross-Belt Sorter Stability with Support Plates and Vertical Profiles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cross-belt sorting machines face challenges in handling unstable luggage, which can roll or slide during acceleration phases, leading to missed flights and potential damage to luggage and equipment, especially in high-speed and complex sorting circuits.
Innovation Solution
The implementation of cross-belt transport units with support plates and vertical profiles that maintain article stability during movement, along with optical sensors and control systems to detect and correct position changes, and the use of low-friction support plates and adjustable rollers to ensure continuous support and prevent rolling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-belt transport units use a flat transport surface for sorting luggage, then the system can handle a wide variety of luggage types (rigid plastic, leather, soft bags) with simple and safe sorting, but unstable luggage can roll on the flat surface during acceleration phases
Solution Approach 1:
The patent introduces a support plate as an intermediary element between adjacent cross-belt transport units. This support plate provides continuous support during the transition between units, preventing unstable luggage from rolling off the edge during acceleration phases while maintaining the simplicity and versatility of the cross-belt system for handling various luggage types.
Solution Approach 2:
The patent adds a vertical dimension to the transport surface by incorporating vertical profiles or raised edges at the boundaries of each transport unit. This creates a contained surface that prevents lateral rolling of unstable luggage while maintaining the flat surface advantage for versatile luggage handling.
2Productivity
If the sorting machine operates at high speed (up to 3 m/s) to reduce dwell times and improve productivity, then the sorting capacity increases, but unstable luggage is more likely to roll over the side during direction changes due to centrifugal acceleration
Solution Approach 1:
The patent implements preventive measures by installing support plates and vertical profiles before high-speed operation begins. These structures are pre-positioned to contain unstable luggage within the transport unit boundaries, cushioning against the centrifugal forces that arise during high-speed direction changes and preventing luggage from rolling off.
Solution Approach 2:
The support plate acts as an intermediary barrier between the luggage and the dangerous gap at the edge of the transport unit. During high-speed operation with centrifugal acceleration, this intermediary structure prevents direct contact between the unstable luggage and the open space, maintaining reliability while allowing high productivity.
3Stability of the object's composition
If support plates are added between adjacent transport units to prevent luggage rolling, then luggage stability improves, but the device complexity increases
Solution Approach 1:
The patent merges the support plate function with the existing transport unit structure. The support plate is integrated between adjacent units, combining the functions of structural support, luggage containment, and transition facilitation into a single element, thereby reducing overall device complexity while maintaining luggage stability.
Solution Approach 2:
The support plate is designed with uniform geometry and material properties that match the existing cross-belt system aesthetics and functionality. This homogeneous design approach minimizes visual and functional complexity, making the additional component blend seamlessly with the existing structure while providing the necessary stability.
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
Enhances the sorting capacity of cross-belt systems by maintaining luggage stability during acceleration and deceleration phases, reducing the risk of damage and improving the reliability of the sorting process, especially in high-speed and curved paths.
Implementation Method 1
The use of a high-grip conveyor belt, on the trolleys of the sorting machine, for loading and sorting items, gives the easiest and safest method, even for more difficult-to-handle items, because it exploits the support on the flat surface formed by the belt for sorting by activating the belt with an acceleration well below the sliding limit of the package on the belt.
Implementation Method 2
When changing direction along the path of the machine, the luggage is subject to an inertial reaction that occurs with centrifugal acceleration relative to the transport system, so that the unstable luggage can roll over the side of the machine.
Implementation Method 3
When changing direction along the path of the machine, the luggage is subject to an inertial reaction that occurs with centrifugal acceleration relative to the transport system
Data Source
Figure 1
Figure 2~3a
Figure 3b~4
AI summary
A method and device for sorting articles, including at least one station for automatically loading articles allowing transfer of the articles to one or several transport units, the station equipped with at least one device for transporting the articles and a system able to determine the position, the shape and the size of the articles, with a set of cross belt transport units, each unit provided with a supporting plate between two adjacent units. The device includes a system allowing detection of a possible change in position of an article on a transport device during the acceleration phase. Maintaining the article in position on its unit(s) is ensured during its movement on the sorter, by supporting plates permanently ensuring supporting surface continuity between two units over a width substantially equal to the supporting surface of the belts and by the presence of vertical profiles on the belts.