Measuring Roll Sensor Layout for Accurate Strip Tension Detection
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Solution Overview
Problem
Conventional measuring rollers for determining the properties of strip-shaped materials, such as metal strips, face challenges in accurately measuring flatness and tension due to disruptive forces and the need for multiple sensors, which can lead to erroneous measurements and equipment weakening.
Innovation Solution
A measuring roller design where force sensors are arranged closely together, with an angle of less than 65° between their end boundary lines, allowing for precise determination of strip edge position and tension, and potentially eliminating the need for additional measuring devices by integrating temperature and speed measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If force sensors are arranged at a distance from the surrounding wall with sealing, then the measuring roller prevents dirt ingress and reduces interfering forces, but the sealing forces act on the force sensor causing measurement errors
Solution Approach 1:
The force sensor is extracted from the recess and mounted on the outer circumferential surface of the measuring roller, eliminating the need for seals and O-rings that cause measurement errors. The sensor is positioned in direct contact with the belt while maintaining structural integrity of the roller body.
2Measurement precision
If multiple force sensors are arranged closely together, then the measurement of strip edge position and tension becomes more precise, but the roller body structure is weakened
Solution Approach 1:
Multiple force sensors are arranged in the circumferential direction around the roller, utilizing the circular geometry to position sensors close together without compromising structural integrity. This dimensional arrangement allows precise strip edge detection while maintaining roller strength through optimal sensor placement spacing.
3Ease of manufacture
If force sensors are arranged in recesses with deep-hole drilling, then the sensors are protected and accessible, but misalignment of drilled channels occurs causing manufacturing issues
Solution Approach 1:
Instead of drilling recesses into the roller body to house the sensors, the approach is inverted by mounting the force sensors on the outer surface of the roller. This eliminates complex deep-hole drilling operations and associated alignment problems while maintaining sensor protection and accessibility through surface mounting techniques.
4Adaptability or versatility
If conventional separate measuring devices are used for tension and temperature, then comprehensive measurement is achieved, but the equipment complexity increases
Solution Approach 1:
Multiple measurement functions are merged into a single integrated measuring roller system. Force sensors measure both tension and strip edge position, while temperature sensors are integrated into the same roller structure, eliminating the need for separate measuring devices and reducing overall system complexity.
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
Enhances the accuracy of flatness and tension measurements while reducing equipment complexity and strengthening the roller body, enabling simultaneous measurement of force, temperature, and speed across the barrel width.
Implementation Method 1
a first force sensor (FR1) is arranged in a recess (3) next to a second force sensor (FR2) in the measuring roller body (1)
Implementation Method 2
contact is established between force sensors or their covers, which are arranged in radial recesses of the measuring roller open to the roller surface, and the belt
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a method for determining a property of a strip-shaped product, particularly metal strip, guided over a measuring roll 1, wherein the strip-shaped product is guided over the measuring roll for determining a property of a strip-shaped product, particularly metal strip, guided over the measuring roll, wherein the measuring roll is designed with • - a measuring roll body 1a having a circumferential surface, • - at least one recess 3 in the measuring roll body, said recess being spaced from the circumferential surface or leading from the circumferential surface into the interior of the measuring roll body, and • - a first force sensor 7a, which is arranged in the recess, and a second force sensor 7b, which is arranged in the recess or in a further recess adjacent to the recess, wherein the first force sensor has a sensor face, and the first force sensor can generate a sensor signal when the location of the sensor face of the first force sensor changes, and the second force sensor has a sensor face, and the second force sensor can generate a sensor signal when the location of the sensor face of the second force sensor changes.