WO2025131919 - METHOD AND CONTROLLER FOR DETECTING VIBRATIONS IN CREPING BLADES
National phase entry is expected:
Publication Number
WO/2025/131919
Publication Date
26.06.2025
International Application No.
PCT/EP2024/085644
International Filing Date
11.12.2024
Title **
[English]
METHOD AND CONTROLLER FOR DETECTING VIBRATIONS IN CREPING BLADES
[French]
PROCÉDÉ ET DISPOSITIF DE COMMANDE POUR DÉTECTER DES VIBRATIONS DANS DES LAMES DE CRÊPAGE
Applicants **
VALMET AB
Inventors
BJERKE, Michael
STENKVIST, Joakim
RÅGÅRD, Johan
Priority Data
2330593-1
21.12.2023
SE
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1969 | |
| EPO | Filing, Examination, Granting | 8107 | |
| Japan | Filing, Examination, Granting | 2092 | |
| South Korea | Filing, Examination, Granting | 1942 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,850
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
The present application relates to a method for detecting vibrations in a creping blade of a tissue machine, which tissue machine is provided with one or more vibration sensors which are arranged to detect vibrations of the creping blade, the method comprising the steps of receiving vibration signals from the vibration sensors, which vibration signals are indicative of vibrations of the creping blade, monitoring (302) the vibrations signals within one or more resonance frequency ranges, identifying (304) one or more peak frequencies within the resonance frequency ranges, monitoring (306) the amplitude of the one or more peak frequencies, comparing (308) the amplitudes of the one or more peak frequencies with a respective of one or more pre-determined levels, and generating (310) a chatter alert if one or more of the monitored amplitudes are above said respective pre-determined level.[French]
La présente demande concerne un procédé de détection de vibrations dans une lame de crêpage d'une machine de fabrication de serviettes en papier, ladite machine de fabrication de serviettes en papier étant pourvue d'un ou plusieurs capteurs de vibration qui sont agencés pour détecter des vibrations de la lame de crêpage, le procédé comprenant les étapes de réception de signaux de vibration provenant des capteurs de vibration, lesquels signaux de vibration indiquant des vibrations de la lame de crêpage, surveillance (302) des signaux de vibrations dans une ou plusieurs plages de fréquences de résonance, identification (304) d'une ou plusieurs fréquences de crête dans les plages de fréquences de résonance, surveillance (306) de l'amplitude de la ou des fréquences de crête, comparaison (308) des amplitudes de la ou des fréquences de crête à l'un respectif parmi un ou plusieurs niveaux prédéterminés, et génération (310) d'une alerte de broutage si une ou plusieurs des amplitudes surveillées sont au-dessus dudit niveau prédéterminé respectif.