Rubber-Taped Winding Ring for Scratch-Free Thin Strip Coils
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Solution Overview
Problem
Thin metal strips with a thickness of 0.3 mm or less are prone to scratches and deformation when wound into a coil shape due to existing methods, which lead to incomplete usage and increased production costs, and existing solutions are either ineffective or overly complex.
Innovation Solution
A method involving a high friction resistance rubber tape with a static friction coefficient of 3.0 or higher, made of silicone rubber, is bonded to the outer circumferential surface of the winding ring to stabilize the thin metal strip during winding, preventing scratches and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional winding methods are used, then production cost is reduced, but the thin metal strip suffers scratches and deformation
Solution Approach 1:
A rubber sleeve is introduced as an intermediary material between the winding ring and the thin metal strip. The rubber sleeve has a soft layer on its outer circumference that contacts the metal strip, preventing direct contact between the hard winding ring and the thin strip, thereby preventing scratches and deformation while maintaining cost-effectiveness
Solution Approach 2:
The surface properties of the winding ring are changed by coating it with a rubber sleeve that has different mechanical properties (softer, higher friction coefficient). This parameter change in the contact surface material prevents damage to the thin metal strip during winding
2Reliability
If the winding ring has high friction to prevent slipping, then winding stability is improved, but the thin metal strip may stick to the winding ring causing deformation
Solution Approach 1:
The rubber sleeve material is selected to have a specific friction coefficient range (0.5-1.5) that provides sufficient grip for stable winding while being soft enough to prevent sticking and deformation of the thin metal strip
Solution Approach 2:
The rubber sleeve is constructed as a composite structure with different layers: a base layer for structural integrity and an outer soft layer for contact with the metal strip. This composite structure provides both the necessary friction for stability and the softness to prevent deformation
3Manufacturing precision
If a soft rubber sleeve is used to protect the thin metal strip, then surface quality is improved, but the rubber sleeve may wear out quickly
Solution Approach 1:
The rubber sleeve is designed to be replaceable rather than permanent. The soft layer can be renewed by applying a new rubber coating or replacing the entire sleeve, extending the service life of the winding system while maintaining protection quality
Solution Approach 2:
The rubber sleeve is designed with sufficient initial thickness and durability to provide protection throughout its service life, with the understanding that it will wear and can be replaced before complete failure occurs
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 approach allows for the production of high-quality thin metal strip coils with reduced production costs and improved workability, as the rubber tape provides sufficient friction to prevent slipping and deformation, enabling the thin metal strip to be used up to the tip without complex mechanisms.
Implementation Method 1
a high friction resistance material that is formed of a rubber tape is bonded to at least a part of an outer circumferential surface of the winding ring
Implementation Method 2
a rubber sleeve having a substantially strip-shaped soft layer, which is formed of a softer elastic material than the main body of the rubber sleeve
Data Source
Figure 1~2
AI summary
Provided are: a coil which is suppressed in scratches and deformation when a metal thin strip having a thin thickness is wound up around a wind-up ring, and which has suppressed low production cost, good workability and good maintenance properties; and a method for producing this metal thin strip coil. A method for producing a metal thin strip coil, by which a metal thin strip coil is obtained by having a metal thin strip wound up around a wind-up ring, and wherein a metal thin strip having a thickness of 0.3 mm or less is wound around a wind-up ring which has a high frictional resistance material that is formed of a rubber tape and bonded to at least a part of the outer circumferential surface thereof; and a metal thin strip coil.