Tension measuring device, system and method for tension straightening of strip cleaning tension straightening unit

Abstract

The invention belongs to the technical field of metal strip finishing, and particularly relates to a tension measuring device, system and method for tension straightening of a strip cleaning tension straightening unit. The tension measuring device comprises a tension measuring roller, tension measuring sensors, a tension transmitter and two shaft seats, wherein the two ends of the tension measuring roller are connected to the shaft seats arranged on the two sides correspondingly; the two tension measuring sensors are arranged and mounted on the two pairs of shaft seats correspondingly; the tension transmitter is in electric signal connection with the two tension measuring sensors; and the tension measuring device is arranged between a cleaning part and an inlet tension roller of the stripcleaning tension straightening unit, and the tension measuring system is formed. After the tension measuring device is used for measuring the inlet tension T_in of a tension straightening section actually, PI adjustment is applied, the torque of transmission equipment of the cleaning section is dynamically adjusted, inlet tension fluctuation of the tension straightening section is reduced to the maximum extent, and thus the tension control precision of the tension straightening section is improved.

Description

Technical field[0001]The invention belongs to the technical field of metal strip finishing and processing, and specifically relates to a strip cleaning tension-straightening unit tension-straightening tension measuring device, system and method.Background technique[0002]After the metal sheet is rolled, it is usually necessary to perform finishing processing to level the flat shape and clean the dirt on the surface of the strip. The cleaning and stretching unit is a common strip finishing unit that integrates strip plate shape adjustment and plate surface cleaning. In order to ensure the strip shape and surface quality, the tension of the tension leveling section must be stable during the working process of the tension leveler, otherwise the strip surface will have defects. Especially aluminum and aluminum alloys, because of their special mechanical properties, are more sensitive to tension fluctuations during the stretch-bending and straightening process, and therefore have higher r...

AI Technical Summary

Problems solved by technology

Especially aluminum and aluminum alloy, due to their special mechanical properties, are more sensitive to tension fluctuations in the process of stretch bending and straightening, so the requirements for tension stability are also higher, otherwise not only the surface of the strip will produce quality defects, And it will also produce vibration lines, which seriously affect the quality of the strip

Affected by factors such as the transmission control accuracy, roll diameter, precision, friction and wear performance, and lubrication state of the cleaning roller, brush roller, and backup roller in the cleaning section, the uncoiling tension in the conventional strip cleaning and straightening unit is transmitted to the tension leveling unit through the cleaning section. There will be different degrees of fluctuations at the entrance of the machine, which will lead to unstable tension in the stretching and leveling section, and ultimately affect the quality of the strip after stretching and leveling

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