Universal Sorter Transfer Module Friction Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional conveyor systems face challenges in handling heavier packages and wider cross-direction widths due to excessive friction between auxiliary belts and wear strips, which impedes operation.
Innovation Solution
A universal sorting conveyor module with a ball belt looped around pulley assemblies and bi-directional cross-belt assemblies, featuring closely spaced idler rollers of smaller diameter, reduces friction and allows for smooth diversion of conveyed products across the machine direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If auxiliary belts are supported on fixed wear strips, then the structure is simple and stable, but friction becomes excessive with heavier packages and wider cross-direction expanses
Solution Approach 1:
The continuous wear strip is segmented into multiple individual rollers (ideally 3 or more) spaced along the auxiliary belt's path. This segmentation reduces the contact area between the belt and support structure, thereby reducing friction while maintaining structural stability through the distributed roller arrangement.
Solution Approach 2:
The support structure transitions from a static wear strip to dynamic rollers that can rotate freely. This allows the support surface to adapt to the moving belt and conveyed objects, reducing friction through rolling contact rather than sliding contact.
2Adaptability or versatility
If the conveyor handles wider cross-direction expanses, then versatility increases, but friction between auxiliary belts and wear strips increases
Solution Approach 1:
The wear strip support is divided into multiple rollers distributed across the width of the conveyor. This allows the system to accommodate wider cross-direction expanses without increasing friction, as each roller contacts only a small portion of the auxiliary belt at any given time.
Solution Approach 2:
The support mechanism transitions from a two-dimensional plane contact (belt on flat wear strip) to a series of discrete point contacts (belt on multiple rollers). This dimensional change reduces the overall contact area and friction while enabling wider cross-direction capability.
3Weight of moving object
If heavier packages are conveyed, then cargo capacity increases, but friction between auxiliary belts and wear strips increases
Solution Approach 1:
The rollers are designed to rotate freely under load, transitioning the friction from static to dynamic rolling friction. This allows the system to handle heavier packages while maintaining lower friction levels compared to a fixed wear strip configuration.
Solution Approach 2:
The weight distribution across multiple rollers reduces the load on each individual roller, preventing excessive friction and wear while maintaining the ability to convey heavier packages.
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
Enables the handling of significant cross-direction widths and heavy conveyed objects without inordinate friction, supporting objects up to 100 pounds and accommodating various sizes from 6″×6″×½″ to 36″×24″×18″, ensuring efficient product diversion and orientation.
Implementation Method 1
the cross belt is driven in the cross machine direction, an object supported on the ball belt is conveyed in the cross direction
Data Source
AI summary
A transfer module for a universal sorting conveyor has a ball belt looped around two pulley assemblies mounted to a frame and driven in a machine direction. Two bi-directional cross-belt assemblies are mounted to the frame to provide two smooth surfaced belts each supported on a roller bed. The belts extend beneath and engage the ball belt to advance a conveyed parcel in the cross direction. Each cross belt assembly has drive rollers at the ends and a multiplicity of closely spaced idler rollers of smaller diameter than the drive rollers which define the roller bed.