Guide Roller Reinforcement for High-Speed Product Transport
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Solution Overview
Problem
Existing transport systems for automatic work machines experience overheating of plastic rollers, leading to dilation and subsequent radial/axial play, which compromises the coupling and blocking of rollers on bearings, especially under high stress and acceleration conditions.
Innovation Solution
Incorporation of reinforcing elements friction-coupled to the rollers, made of metal, to prevent dilation and maintain precise contact with guide profiles, ensuring consistent coupling with rotation shafts and preventing undesired radial/axial play.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If plastic rollers are used for transport, then ease of manufacture and low cost are achieved, but thermal stability and dimensional precision deteriorate under overheating conditions
Solution Approach 1:
The patent applies composite materials by combining plastic rollers with metal reinforcing elements (cages or inserts). The plastic material provides ease of manufacture and low cost, while the metal reinforcing elements provide thermal stability and dimensional precision. This composite structure allows the rollers to maintain their manufacturing advantages while overcoming the thermal expansion and deformation issues of pure plastic rollers under overheating conditions.
2Productivity
If high speed and strong acceleration are used for transport, then productivity is improved, but roller overheating and dilation worsen
Solution Approach 1:
The patent changes the material parameters of the rollers by incorporating metal reinforcing elements into the plastic structure. This parameter change (from pure plastic to composite) fundamentally alters the thermal properties, reducing thermal expansion and maintaining dimensional stability even when temperature increases due to high-speed operation and strong accelerations, thereby enabling sustained high productivity without the detrimental effects of overheating.
3Productivity
If roller speed and acceleration are increased, then transport efficiency is improved, but radial and axial play in roller-bearings worsens
Solution Approach 1:
The use of composite materials with metal reinforcing elements embedded in the plastic rollers significantly reduces radial and axial play in the roller-bearing coupling. The metal elements provide structural rigidity and maintain precise geometry under high-speed and high-acceleration conditions, ensuring reliable coupling with the bearings and rotation shafts even when transport efficiency is maximized through increased speed and acceleration.
4Weight of moving object
If plastic material is used for rollers, then low weight is achieved, but thermal expansion and shape variation worsen under overheating
Solution Approach 1:
The patent creates a composite structure where lightweight plastic material is reinforced with metal elements. This combination maintains the low weight advantage of plastic while the metal reinforcing elements (cages or inserts) provide thermal stability and prevent shape variation. The metal elements act as a structural skeleton that constrains the plastic material from expanding or deforming under overheating conditions, thus maintaining shape stability without sacrificing weight advantages.
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 solution effectively maintains the precision and contact of rollers with guide profiles even under significant forces and moments, reducing wear and ensuring reliable operation during prolonged use, high speeds, and strong accelerations.
Implementation Method 1
a reinforcing element (5, 6, 7, 8) which is friction-coupled to at least a part of the main portions (310, 320, 410, 420) of the external lateral walls of the rollers (31, 32, 41, 42)
Data Source
AI summary
A transport system has a mobile carriage for transport of products along a guide path that has a first guide profile and a second guide profile. A first pair of rollers is mounted rotatably on a first rotation shaft borne by the carriage, so as to engage the first guide profile. A second pair of rollers rotatably mounted on the second rotation shaft engages the second guide profile. For each roller of the first pair of rollers and for each roller of the second pair of rollers, a reinforcing element is provided which is friction-coupled to at least a part of the main portions of external lateral walls of the rollers.