Suction Roll Sealing Element Position Detection
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Solution Overview
Problem
Current suction roll assemblies face challenges in precisely adjusting the position of sealing elements relative to the paper edge in paper machines, leading to unstable web run and edge issues due to the lack of direct measurement of the format slide position during web width adjustment.
Innovation Solution
A signal transmitter, such as a light source, is integrated with the sealing element of the suction roll assembly, allowing precise determination of the sealing element's position from the moving surface, enabling automated adjustment through a servomotor and microprocessor control, even through the perforations and web, reducing manual intervention and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual adjustment of format slide position is used, then device complexity is reduced, but measurement precision and adjustment accuracy deteriorate
Solution Approach 1:
The patent replaces manual mechanical adjustment with an automated system using a servomotor and microprocessor. The signal transmitter (optical or magnetic) provides continuous position feedback to the control system, enabling precise automated positioning of the format slide without manual intervention, thereby improving measurement precision while maintaining manageable device complexity through electronic control.
Solution Approach 2:
The patent implements a feedback mechanism where a signal transmitter continuously monitors the format slide position and transmits signals to a microprocessor. This closed-loop feedback system enables real-time position verification and automated adjustment, significantly improving measurement precision and adjustment accuracy compared to manual methods.
2Measurement precision
If automated adjustment with signal transmitter is implemented, then measurement precision and adjustment accuracy improve, but device complexity increases
Solution Approach 1:
The patent replaces complex manual adjustment procedures with a streamlined automated system. The signal transmitter (optical or magnetic sensor) combined with servomotor and microprocessor creates an integrated automated positioning system that simplifies the overall adjustment process while improving precision, as the system self-regulates without manual intervention.
Solution Approach 2:
The patent enables the format slide positioning system to self-adjust and self-monitor automatically. The signal transmitter continuously provides position feedback, and the microprocessor automatically calculates and executes position corrections via the servomotor, making the system self-sufficient and reducing the need for complex manual adjustment mechanisms.
3Stability of the object's composition
If continuous monitoring of sealing element position is implemented, then web stability improves, but use of energy increases
Solution Approach 1:
The patent implements periodic monitoring of the sealing element position through the signal transmitter rather than continuous high-energy monitoring. The optical or magnetic signal is transmitted periodically or on-demand based on web position triggers, providing sufficient feedback for web stability control while minimizing energy consumption compared to continuous high-frequency monitoring systems.
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 solution allows for precise and automated adjustment of sealing elements, enhancing web stability and edge control, reducing manual effort and wear, and enabling continuous monitoring and correction of sealing element positions during production.
Implementation Method 1
A signal transmitter, such as a light source, is integrated with the sealing element of the suction roll assembly, allowing precise determination of the sealing element's position from the moving surface, enabling automated adjustment through a servomotor and microprocessor control, even through the perforations and web
Data Source
AI summary
A suction roll assembly for sealing at least one negative or positive pressure zone which adjoins a surface of the roll which is perforated and moves in a movement direction in a machine for making paper, tissue or cardboard, has at least one sealing element which lies opposite the moving surface and is arranged in a receptacle which can be moved to change the format of the negative or positive pressure zone. In order to simplify the adjustability of the receptacle in order to position the sealing element, there is a signal transmitter which is connected directly or indirectly to the sealing element and the signal of which can be received on that side of the moving surface which faces away from the sealing element.