Staggered Roller Wiping Device for Strip Surface Quality
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Solution Overview
Problem
Existing devices for wiping rolled strips during cold rolling operations often result in marking on the rollers, which are then transferred to the strip, and lack the ability to apply pressure forces uniformly or quickly assemble/disassemble.
Innovation Solution
A device with staggered rollers distributed over multiple axes of rotation, providing a continuous support along the pressure cylinders, allowing for homogeneous force distribution and reduced stress on the rollers, and featuring pneumatic jacks for adjustable force regulation and quick assembly/disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If rollers are distributed on single-axis bearing blocks, then the structure is simple, but marking occurs on the cylinders and strip due to localized pressure concentration
Solution Approach 1:
The bearing blocks are segmented into multiple sections along the cylinder axis, with each section containing rollers arranged on two parallel axes. This segmentation distributes the pressure application points along the cylinder length, preventing localized marking while maintaining structural modularity
Solution Approach 2:
Rollers are arranged asymmetrically on two parallel axes rather than symmetrically on a single axis. The staggered positioning of rollers on different axes creates a more uniform pressure distribution pattern across the cylinder surface, eliminating the periodic marking that occurs with single-axis arrangements
2Device complexity
If pressure is applied through limited rollers, then the device complexity is low, but the pressure distribution is non-uniform causing marking
Solution Approach 1:
The rollers are arranged to provide continuous pressure application along the entire length of the cylinder. By distributing rollers across multiple bearing blocks positioned at different axial locations, the pressure action becomes continuous rather than intermittent, ensuring uniform wringing across the strip width without creating localized marking zones
3Productivity
If the wiping device is designed for quick assembly/disassembly, then maintenance efficiency improves, but structural complexity increases
Solution Approach 1:
The wiping device is divided into modular bearing block assemblies that can be independently removed and replaced. Each bearing block contains complete roller sets and can be quickly detached from the cylinder support structure, enabling rapid maintenance without disassembling the entire device
Solution Approach 2:
The bearing blocks are designed as universal modules that can be positioned at different locations along the cylinder and perform the same wringing function. This standardization allows quick interchange of modules during maintenance while maintaining the overall device structure
Data Source
Figure 1~4
Figure 5~7
AI summary
Device for the treatment, notably drying, of a rolled strip incorporates pressure rolls (1) arranged transversely to the defilement direction on either side of the strip transverse. Each pressure roll is applied on the strip by means of a plurality of rollers (21,22) distributed over the length of the roll following at least two rotation axes (3,4) parallel to the roll. The rollers are arranged in staggered manner on the two rotation axes.