EP 0038927 B1 19840404 - METHOD AND DEVICE FOR REGULATING THE UNEVENNESS OF A SLIVER
Title (en)
METHOD AND DEVICE FOR REGULATING THE UNEVENNESS OF A SLIVER
Publication
Application
Priority
CH 245980 A 19800328
Abstract (en)
[origin: ES8301507A1] An autolevelling drawframe for levelling out staple fibre slivers in the spinning mill operation, in which deviations of the sliver weight (linear density) from the preset desired value detected are processed into correcting signals and are transmitted to a correcting member, which adapts the input speed of the drafting arrangement. The correcting signal transmitted is generated from the product of a voltage proportional to the rotational speed of the main motor and a voltage determined by the deviation in linear density. The apparatus consists of a computer (34,41 60,41 67,71) for computing the correcting signal, which computer is connected electrically with the correcting member (48), with a transducer (20) transmitting the voltage proportional to the rotational speed of the main motor, and with means for generating the voltage determined by the deviation in linear density. The computer can consist of a control device (36) and a multiplicator (41) or of a microprocessor (71) (digital computer).
IPC 1-7
IPC 8 full level
D01H 5/42 (2006.01)
CPC (source: EP US)
D01H 5/42 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0038927 A1 19811104; EP 0038927 B1 19840404; EP 0038927 B2 19890517; AT E6947 T1 19840415; BR 8101861 A 19810929; DE 3162923 D1 19840510; ES 501316 A0 19821201; ES 8301507 A1 19821201; HK 60785 A 19850823; IN 154205 B 19841006; JP H0217649 B2 19900423; JP S56148920 A 19811118; US 4369550 A 19830125
DOCDB simple family (application)
EP 81101903 A 19810314; AT 81101903 T 19810314; BR 8101861 A 19810327; DE 3162923 T 19810314; ES 501316 A 19810327; HK 60785 A 19850815; IN 343CA1981 A 19810328; JP 4536981 A 19810327; US 24405081 A 19810316