Pivoting Guide Roller for Corrugated Web Tension Equalization
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Solution Overview
Problem
Existing systems for controlling the tension and advancement speed of paper webs in corrugated board production require a large number of components and mechanical members, leading to inefficiencies and uneven tension distribution, which can result in imperfect gluing and planarity issues.
Innovation Solution
A device comprising a single guide roller supported by pivoting arms and actuators that adjust and equalize tension by changing the inclination of the roller's axis in response to transverse tension differences, allowing for a simpler system to control tension, absorb fluctuations, and maintain uniformity across the width of the web.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple components and mechanical members are used to control tension and absorb fluctuations, then tension control and damping are improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions (tension control, damping, and equalization) into a single guide roller assembly with pivoting arms. The guide roller itself performs tension control while the pivoting arms provide both damping and transverse equalization, eliminating the need for separate components for each function.
Solution Approach 2:
The guide roller assembly is designed as a universal component that simultaneously achieves three objectives: controlling longitudinal tension, damping tension fluctuations, and equalizing transverse tension distribution. This multi-functional design replaces what would traditionally require multiple specialized components.
2Productivity
If multiple mechanical members are arranged along the paper supply path, then tension control and damping are improved, but the system becomes more complex
Solution Approach 1:
The patent merges the functions of tension control and damping into a single guide roller assembly. The guide roller's positioning mechanism provides tension control while its pivoting arms naturally dampen fluctuations, eliminating the need for separate damping components along the supply path.
Solution Approach 2:
The guide roller is mounted on pivoting arms that can dynamically adjust their position in response to tension variations. This dynamic mounting allows the system to automatically dampen fluctuations and adapt to changing conditions without requiring complex mechanical arrangements of fixed components.
3Manufacturing precision
If equalizer rollers are used to equalize tension on the sides of the paper web, then transverse tension uniformity is improved, but device complexity increases
Solution Approach 1:
The patent integrates the equalization function directly into the guide roller assembly. The pivoting arms that support the guide roller also serve as the equalization mechanism, eliminating the need for separate equalizer rollers. The same structural elements that provide tension control now perform transverse equalization.
Solution Approach 2:
The guide roller assembly serves as a universal component that performs both longitudinal tension control and transverse equalization. The pivoting arms provide both damping and equalization functions, making the system more compact while maintaining manufacturing precision.
4Reliability
If a large number of components are used along the supply path, then tension control and damping are improved, but the system requires more space and becomes more complex
Solution Approach 1:
The patent consolidates multiple tension control functions into a single guide roller assembly. By merging tension control, damping, and equalization into one compact unit, the system reduces the total space required compared to having multiple separate components distributed along the supply path.
Solution Approach 2:
The dynamic pivoting arm mechanism allows the guide roller to move and adjust within a limited space envelope, providing effective tension control without requiring the extensive space needed for static, multi-component systems. The dynamic nature of the arms enables compact operation while maintaining control 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 solution effectively controls tension and speed, absorbs peaks, and equalizes tension in the transverse direction, ensuring consistent web guidance and improved gluing quality in corrugated board production.
Implementation Method 1
The guide roller, the first lateral support and the second lateral support are configured so that the rotation axis of the guide roller is urged to change the inclination with respect to the tension adjustment axis as a result of a change of the tension of the web-like material along a direction transversal to the advancement direction of the web-like material
Data Source
AI summary
The device includes a roller for guiding the web-like-material, supported idle about a rotation axis and having a first axial end and a second axial end. Two lateral supports support the guide roller. The guide roller is configured so that the rotation axis thereof may be inclined with respect to a position orthogonal to the advancement direction of the web-like material, to compensate changes in the transversal direction of the tension in the web-like material.