Monitoring apparatus and monitoring method
Number of patents in Portfolio can not be more than 2000
United States of America
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Dec 31, 2024
Grant Date -
Sep 30, 2021
app pub date -
Mar 25, 2021
filing date -
Mar 25, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A monitoring apparatus for a doctoring comprises a vibration sensor which is individual and is attached at a discrete location of a doctor blade arrangement, the at least one vibration sensor converting a mechanical vibration of the doctor blade arrangement to an electrical signal, the mechanical vibration being caused by the doctor blade in response to a scraping operation of a rotating roll which is in contact with a moving web. A data processing unit receives the electrical signal carrying information on the vibration, compares said vibration with a reference of at least one previous measurement of a same grade of the web, and start one or more preventive actions in order to avoid a drop-through in the case said vibration exceeds at least one boundary of the reference.
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