EP 0708849 B1 19990310 - CARDING/DRAFTING LEVELLER SYSTEM
Title (en)
CARDING/DRAFTING LEVELLER SYSTEM
Title (de)
KARDIER-VERZUG REGELANORDNUNG
Title (fr)
SYSTEME D'EGALISATION DE CARDAGE/D'ETIRAGE
Publication
Application
Priority
- GB 9314538 A 19930714
- GB 9401517 W 19940713
Abstract (en)
[origin: WO9502720A1] Apparatus for controlling the formation of a sliver and comprising a card (10), a feeding device (11, 12) upstream of the card for feeding a lap to the card, a condenser (13) downstream of the card (10) to form a sliver, a set of measuring rollers (14, 15) arranged to receive the sliver and to monitor the parameters of the sliver and being arranged to respond to deviations of the sliver from a desired value, a feedback control arranged to respond to deviation monitoring (APD) by the measuring rollers (14, 15) and to make compensating adjustment in the speed of operation of the feeding device (11, 12), drafting rollers (16) arranged downstream of the measuring rollers (14, 15) and drive means for driving the drafting rollers at a predetermined speed relative to the speed of the measuring rollers (14, 15) to provide a required drafting ratio, a feed-forward control arranged to respond to deviation monitoring by the measuring rollers (14, 15) and coupled with the drive means of the drafting rollers to provide corresponding variation in speed of the drafting rollers, a device to monitor the ratio between peripheral distance (D1) travelled by the measuring rollers (14, 15) relative to the peripheral distance (D2) travelled by the drafting rollers (16) and for comparing the ratio with a desired value and where necessary issuing a deviation signal (DS), and means for applying the deviation signal as a further control to the drive means to vary the relative speed of the drafting rollers (16).
IPC 1-7
IPC 8 full level
D01G 15/64 (2006.01)
CPC (source: EP)
D01G 15/64 (2013.01)
Designated contracting state (EPC)
CH DE GB IT LI
DOCDB simple family (publication)
WO 9502720 A1 19950126; DE 69417036 D1 19990415; EP 0708849 A1 19960501; EP 0708849 B1 19990310; GB 9314538 D0 19930825; IN 181817 B 19981003; JP H09502770 A 19970318
DOCDB simple family (application)
GB 9401517 W 19940713; DE 69417036 T 19940713; EP 94920560 A 19940713; GB 9314538 A 19930714; IN 559CA1994 A 19940714; JP 50440994 A 19940713