Non-woven covered roller
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Solution Overview
Problem
Current non-woven covered rollers for primary metal fabrication are expensive and complex to produce, with high material waste and specialized shaft designs required, while rubber, urethane, or vinyl covered rollers lack the performance and durability needed for harsh metal fabrication conditions.
Innovation Solution
A resin-saturated non-woven seamless tube is adhered to a shaft with a uniform smooth outer surface, using a process that reduces production steps and costs, while maintaining or exceeding the performance of existing non-woven covered rollers through a continuous resin layer that bonds the non-woven web to the shaft, providing enhanced durability and self-cleaning properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-woven covered rollers are made by coating non-woven web with resin, stamping hollow disks, stacking and compressing disks into hollow cylinder, and retaining to metal shaft with retention plates and keys, then the roller has longer life, higher coefficient of friction, and better fluid wringing properties, but the production cost is much higher and the manufacturing process is more complex
Solution Approach 1:
The invention divides the non-woven web into discrete hollow disks with circumferential grooves, which are then stacked and compressed to form the cylindrical cover. This segmentation allows for simplified manufacturing of individual disks while achieving the desired performance characteristics when assembled.
Solution Approach 2:
The invention combines multiple functional elements into the hollow disk structure: the disk body provides structural support, the circumferential grooves provide fluid channels and self-cleaning capability, and the stacking arrangement creates the cylindrical form. This merging of functions into a single component reduces overall manufacturing complexity.
2Reliability
If non-woven covered rollers are made by coating non-woven web with resin, stamping hollow disks, stacking and compressing disks into hollow cylinder, and retaining to metal shaft with retention plates and keys, then the roller has higher coefficient of friction and better fluid wringing properties, but the production cost is much higher
Solution Approach 1:
The hollow disks are designed with circumferential grooves that create porous-like fluid channels throughout the structure. This allows excellent fluid wringing capability while using simpler manufacturing processes compared to traditional solid non-woven covers, reducing production costs.
Solution Approach 2:
The hollow disk design with circumferential grooves enables self-cleaning functionality where debris and excess fluid are actively removed during operation. This self-maintaining feature extends roller life and maintains performance without requiring complex maintenance procedures.
3Ease of manufacture
If rubber, urethane, or vinyl covered rollers are used, then the production cost is lower, but the roller lacks durability and performance in harsh metal fabrication conditions
Solution Approach 1:
The invention uses non-woven material combined with resin coating to create a composite structure that exhibits superior properties compared to single-material covers. The non-woven base provides structural integrity and chemical resistance, while the resin coating enhances friction and fluid wringing properties, achieving both durability and cost-effectiveness.
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 resulting non-woven covered rollers offer superior performance and lifespan compared to rubber, urethane, or vinyl covered rollers, with reduced material waste and lower production costs, making them suitable for diverse metal fabrication applications, including exposure to acidic, caustic, and oily environments.
Implementation Method 1
a continuous resin layer that saturates both the non-woven seamless web and coats the outer surface of the shaft to bond it to the non-woven web with sufficient force
Implementation Method 2
a non-woven seamless tube comprising a needle-tacked web of fibers formed into a seamless tube
Data Source
AI summary
A non-woven covered roller comprising a resin-saturated seamless non-woven tube on a shaft and a process for making the non-woven covered roller comprising non-woven fibers and a shaft surface completely covered with at least the same resin wherein the resin-saturated non-woven tube has a hardness of at least 40 wet Shore A. It also has an outer surface configured to both trap metal debris from a metal web during primary metal fabrication operations and temporarily compress to allow larger metal debris associated with the metal web to pass by without permanently damaging the outer surface of the non-woven covered roller. Furthermore, it has an inner surface sufficiently bonded with the same resin to the outer surface of the shaft to permit satisfactory life of the resin-saturated non-woven covered roller during primary metal fabrication conditions similar to that of conventional shafts that are covered with rubber, urethane, or vinyl, and have not been exposed to the metal debris.