Rotatable Accumulator Flap for Package Chute Buffering
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Solution Overview
Problem
In package sorting systems, when containers at the ends of chutes are full or being replaced, packages often fall on the floor instead of being directed into the correct container, leading to increased congestion and reduced sorting accuracy due to the need for recirculation on the conveyor belt.
Innovation Solution
A chute with a rotatable accumulator flap that activates to form a temporary buffer area when the container is removed, allowing packages to be stored until a new container is placed, thereby preventing them from falling and maintaining conveyor belt efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packages are recirculated on the sorter until a new container is placed, then packages can be diverted into the correct container, but package density on the conveyor belt increases making sorting less accurate and slower
Solution Approach 1:
The chute is segmented into two functional zones: an accumulation area for buffering packages and a delivery area for directing packages to containers. This segmentation allows packages to be temporarily stored in the accumulation area when containers are being replaced, preventing them from falling on the floor while maintaining continuous flow on the conveyor belt without recirculation
Solution Approach 2:
The accumulation area is prepared in advance by activating the flap to block the chute outlet before container replacement occurs. This preliminary action creates a buffer zone that captures incoming packages, ensuring they are held safely during the container swap operation and ready for immediate diversion when the new container is in place
2Productivity
If containers are replaced when full, then sorting capacity is maintained, but packages diverted during replacement fall on the floor
Solution Approach 1:
The flap acts as an intermediary mechanism between the package flow and the container. When the container is removed or being replaced, the flap activates to intercept packages that would otherwise fall on the floor, redirecting them into the accumulation area. This intermediary action ensures continuous reliable package capture during container replacement operations
3Reliability
If the flap is activated to buffer packages, then packages are prevented from falling on the floor, but the chute structure becomes more complex
Solution Approach 1:
The flap is designed as a dynamic, movable component that can pivot between a blocked position (when activated to buffer packages) and an open position (during normal operation). This dynamic design allows the same structural element to serve dual functions: containing packages when needed and allowing free flow when the container is ready, avoiding the need for separate fixed blocking structures
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
This solution reduces congestion on the conveyor belt, improves sorting accuracy, and speeds up the sorting process by allowing continuous diversion of packages into the chute without recirculation, even when containers are being replaced.
Implementation Method 1
The flap is disposed at an end of the chute at a decline so that during normal operation packages slide off the flap into the container
Implementation Method 2
the flap can be rotatably connected to the chute (e.g., via a hinge) so that when the container is removed, an actuator can rotate the flap from a decline position into a vertical position
Implementation Method 3
the actuator can rotate the flap back to the decline position so that any accumulated packages are ejected into the container
Data Source
AI summary
Embodiments herein describe a chute for temporarily buffering packages when, for example, a container disposed at the end of the chute has been removed. The chute includes a flap that activates to hold packages in an accumulation area when the container is removed. In one embodiment, the flap is disposed at an end of the chute at a decline so that during normal operation packages slide off the flap into the container. An actuator can rotate the flap from a decline position into a vertical position such that the flap serves as a stop to prevent packages from sliding off the chute when containers are being swapped out. Once a new container is disposed at the end of the chute, the actuator can rotate the flap back to the decline position so that any accumulated packages are then ejected into the container.