Conveyor Roller Assembly With Resilient Traction for Wet Baskets
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Solution Overview
Problem
Conveyor systems in multi-chamber washers face challenges in maintaining sufficient driving force and frictional contact between metal rollers and metal or plastic baskets, especially in wet environments, due to varying friction coefficients and cleaning difficulties.
Innovation Solution
A conveyor roller assembly featuring a cylindrical body with concentric bearing surfaces and an annular T-shaped slot housing a resilient friction element, providing improved traction and stability by compressing to maintain contact with the basket regardless of weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal conveyor rollers are used, then durability and ease of cleaning are improved, but driving force and frictional contact with metal baskets deteriorate in wet environments
Solution Approach 1:
The roller is constructed as a composite structure with a metal body (stainless steel) for durability and cleaning, combined with a resilient friction element (rubber or elastomer) bonded to its surface. This composite design allows the metal roller to maintain structural integrity while the rubber surface provides enhanced friction and driving force, even in wet environments. The friction element acts as an intermediary that combines the benefits of both metal and rubber materials.
2Force
If plastic conveyor rollers are used, then friction coefficient and noise reduction are improved, but ease of cleaning deteriorates
Solution Approach 1:
The roller is divided into two functional segments: a metal body portion that provides structural support and ease of cleaning, and a separate resilient friction element that provides high friction coefficient and noise reduction. The friction element is bonded to the metal body, allowing each segment to perform its specialized function. This segmentation enables the roller to achieve properties that neither material could provide alone.
3Strength
If conventional metal rollers are used, then structural strength is improved, but adaptability to different basket weights and materials deteriorates
Solution Approach 1:
The resilient friction element introduces dynamic compliance to the otherwise rigid metal roller. This compliance allows the roller to automatically adapt to varying basket weights, sizes, and materials by deforming slightly to maintain optimal contact pressure. The dynamic nature of the rubber element enables the roller to conform to different load conditions without requiring adjustment mechanisms.
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 enhances frictional contact and reduces slipping, ensuring reliable conveying of both metal and plastic baskets across the multi-chamber washer, regardless of environmental conditions.
Implementation Method 1
The friction element is dimensioned to be retained in the slot. The friction element has a substantially T-shaped cross section with a base portion and a radially extending wall portion having a diameter greater than an outer diameter of the outer roller section and the inner roller section such that the radially extending wall portion extends above the outer diameter of the outer roller section and the outer diameter of the inner roller section, the friction element being formed of a resilient material.
Implementation Method 2
the friction element being formed of a resilient material
Implementation Method 3
providing improved traction and stability by compressing to maintain contact with the basket regardless of weight
Data Source
Figure 1
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Figure 3
AI summary
A roller for a conveyor system is comprised of a body portion that is generally cylindrical and rotatable about a central axis. A first bearing surface is defined around the body portion. A second bearing surface is raised above the first bearing surface and is generally concentric to the first bearing surface, the second bearing surface being more resilient than the first bearing surface.