EP 3613884 B1 20210825 - METHOD FOR MEASURING THE CONSUMPTION OF YARN FOR ACCUMULATION WEFT FEEDERS
Title (en)
METHOD FOR MEASURING THE CONSUMPTION OF YARN FOR ACCUMULATION WEFT FEEDERS
Title (de)
VERFAHREN ZUR MESSUNG DES FADENVERBRAUCHS FÜR SPEICHERSCHUSSFADENZUFÜHRVORRICHTUNGEN
Title (fr)
PROCÉDÉ DE MESURE DE LA CONSOMMATION DE FIL POUR FOURNISSEURS DE TRAME À ACCUMULATION
Publication
Application
Priority
IT 201800007909 A 20180807
Abstract (en)
[origin: EP3613884A1] A method for measuring the consumption of yarn for accumulation weft feeders wherein a control unit (CU) of an accumulation weft feeder (10) calculates the amount of consumed yarn Cm in a time interval comprised between an instant t1 and an instant t2 on the basis of the following formula:Cm=ERQ1−ERQ2+IPC*Cwhere ERQ1 is the estimated reserve amount on the drum (12) of the feeder at the instant t1, ERQ2 is an estimated reserve amount that is present on the drum (12) at the instant t2, IPC is the number of winding pulses (WP) counted in the time interval between the instant t1 and the instant t2, and C is the length of the loop or fraction of loop wound on the drum. The estimated reserve amounts at the instants t1 and t2 are calculated on the basis of the number of winding pulses (WP) and of unwinding pulses (UWP), the latter being counted by an unwinding sensor (S3) and being generated from the instant when the weft reserve sensor (S2) switches its own state.
IPC 8 full level
D04B 15/48 (2006.01)
CPC (source: EP)
D04B 15/486 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3613884 A1 20200226; EP 3613884 B1 20210825; IT 201800007909 A1 20200207
DOCDB simple family (application)
EP 19183859 A 20190702; IT 201800007909 A 20180807