Composite Return Roller Honeycomb Ends Inertia Reduction
Solution Overview
Problem
The increasing width and speed of unwound product strips lead to mechanical tensile stresses due to high inertia in traditional steel return rollers, limiting productivity by causing delays, tensions, and deformations.
Innovation Solution
A return roller made of composite materials with a hollow cylindrical body and end pieces featuring an internal honeycomb structure, reducing mass and inertia, allowing for higher speeds and wider strips without generating tension or deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the width and running speed of the product strip are increased to improve productivity, then the mechanical tensile stresses and delay phenomenon generated by traditional steel return rollers increase, causing tensions and deformations in the product
Solution Approach 1:
The return roller is constructed from composite materials consisting of a hollow cylindrical body made of fiber-reinforced plastic (such as glass fibers, carbon fibers, or aramid fibers) with end pieces featuring internal honeycomb structures. This composite construction reduces the roller's mass and inertia by approximately 70-80% compared to traditional steel rollers, thereby eliminating the delay phenomenon and mechanical tensile stresses while maintaining sufficient structural strength and rigidity to support high-speed unwinding of wide product strips.
Solution Approach 2:
The roller employs differentiated structural characteristics in different zones: the hollow cylindrical body provides overall structural support with optimized wall thickness for strength-to-weight ratio, while the end pieces incorporate internal honeycomb structures that further reduce mass at the ends where bearing mounts are located. This local optimization allows the roller to achieve minimal inertia while maintaining necessary mechanical properties in critical areas.
2Weight of moving object
If traditional steel return rollers are used to support wide and fast-moving product strips, then the high inertia of the rollers causes delay phenomenon during speed regulation, but switching to lighter materials may compromise the roller's structural strength and rigidity
Solution Approach 1:
The roller utilizes fiber-reinforced composite materials where the hollow cylindrical body is made of plastic reinforced with high-strength fibers (glass, carbon, or aramid). These composite materials provide exceptional strength-to-weight ratios, enabling the roller to achieve 70-80% mass reduction compared to steel while maintaining or even improving structural strength and rigidity. The end pieces incorporate internal honeycomb structures that further optimize the strength-to-weight ratio by providing structural support with minimal material usage.
Data Source
Figure 1~4
AI summary
According to the invention, the roller comprises a hollow cylindrical body (2) made from composite material and each end of the body comprises a steel end-piece (3) to be secured to rolling means so as to rotate the roller. The end-pieces, which are preferably made from aluminium or steel, are preferably sleeves or inserts with internal honeycomb structures.