Adjustable Roller Web Guidance with Variable Pivot Axis
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Solution Overview
Problem
Existing web guiding apparatuses face challenges in achieving optimal web running characteristics due to fixed pivot axes and limited adjustability, which restricts their ability to adapt to asymmetrical web guidance and changes in web tension and direction.
Innovation Solution
The apparatus features an adjustable roller with multiple degrees of freedom, operatively connected to actuators that allow for precise positioning and movement, enabling a variable pivot axis and reduced secondary effects on web tension, with the use of computation circuits to calculate actuator lengths and positions for defined pivot motions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed pivot axis is used for the roller, then the structure is simple and reliable, but the adaptability to asymmetrical web guidance and changing web directions is limited
Solution Approach 1:
The patent applies the dynamics principle by making the pivot axis movable rather than fixed. The roller is equipped with adjustment mechanisms that allow the pivot axis to be repositioned dynamically to accommodate asymmetrical web guidance and changing web directions, transforming a static structure into an adaptive one.
Solution Approach 2:
The patent implements parameter changes by allowing the pivot axis position to be varied as a controllable parameter. Through adjustment mechanisms, the pivot axis can be repositioned along the roller to optimize web running characteristics for different web guidance configurations, enabling the system to adapt to varying operational requirements.
2Ease of operation
If the roller is made adjustable with multiple degrees of freedom, then the web running characteristics are improved, but the device complexity increases
Solution Approach 1:
The patent applies dynamics by enabling the roller to be adjusted in multiple degrees of freedom, allowing it to pivot and reposition dynamically to optimize web running characteristics. This transforms a fixed roller into an adaptable component that can respond to different web guidance requirements.
Solution Approach 2:
The patent implements universality by designing the roller with multi-functional adjustment capabilities. The roller can be adjusted for different pivot positions, orientations, and web guidance configurations, making it a universal component that handles various web running scenarios without requiring multiple specialized rollers.
3Ease of operation
If the pivot axis is repositioned to optimize web run, then web running characteristics improve, but the web tension control may be affected
Solution Approach 1:
The patent applies dynamics by enabling dynamic repositioning of the pivot axis to optimize web run while maintaining web tension control. The adjustment mechanisms allow the pivot axis to be repositioned within certain limits, and the system can adapt the roller's orientation and position to balance web run optimization with tension maintenance.
Solution Approach 2:
The patent implements parameter changes by allowing the pivot axis position to be varied as a controllable parameter while maintaining web tension. The system can adjust the pivot axis position to optimize web run characteristics while compensating for any tension changes through coordinated adjustment of the roller's orientation and position parameters.
Data Source
AI summary
An apparatus (1) serves to influence a running material web (2). To this end, the apparatus (1) has at least one adjustable roller (4), which deflects the material web (2). In order to improve the web running characteristics of the material web (2), the at least one roller (4) is adjustable by at least two degrees of freedom. Moreover, the at least one roller (4) is operatively connected to at least two actuators (17) such that at least one of the actuators (17) is assigned to each of the degrees of freedom.