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

EP 3613884 A1 20200226 (EN)

Application

EP 19183859 A 20190702

Priority

IT 201800007909 A 20180807

Abstract (en)

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)

Citation (applicant)

IT 201800007909 A 20180807

Citation (search report)

• [A] EP 2907906 A1 20150819 - LGL ELECTRONICS SPA [IT]
• [A] EP 2592032 A1 20130515 - BTSR INT SPA [IT]

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

Designated extension state (EPC)

BA ME

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