EP 0578966 B1 19960911 - Method for winding a yarn with stepped precision winding
Title (en)
Method for winding a yarn with stepped precision winding
Title (de)
Verfahren zum Aufspulen eines Fadens in gestufter Präzisionswicklung
Title (fr)
Procédé pour enrouler un fil par bobinage de précision étagé
Publication
Application
Priority
DE 4223271 A 19920717
Abstract (en)
[origin: US5447277A] The stepwise high precision winding method includes winding the yarn on the bobbin with a reciprocating yarn changing guide in a series of steps so that an outer circumferential speed of the yarn-bobbin package is constant; reducing the yarn guide reciprocation frequency in each step from a starting frequency value to a final frequency value while keeping a winding number constant during each step so that the final frequency value is proportional to a bobbin rotation frequency in each step, and then increasing the yarn guide reciprocation frequency discontinuously to another starting frequency value and beginning a following step with the yarn guide reciprocation frequency equal to the other starting frequency value; setting the starting frequency value in each step to not more than a fixed maximum frequency; setting the final frequency value in each step to not less than a certain fixed minimum frequency; and setting the winding number in the Sth step equal to either iS-iSx/(MS+x) or iS+iSx/(MS-x), wherein x=a/2H; iS is a mirror value for the Sth step, MS is the order of the mirror value for the Sth step, a=the lay spacing between windings of a Kth lay and a (K+MS)th lay and H is a total height of the yarn-bobbin package.
IPC 1-7
IPC 8 full level
B65H 54/38 (2006.01)
CPC (source: EP US)
B65H 54/383 (2013.01 - EP US); B65H 2701/31 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK FR GB IT LI NL
DOCDB simple family (publication)
US 5447277 A 19950905; AT E142597 T1 19960915; DE 4223271 C1 19930624; DE 59303727 D1 19961017; EP 0578966 A1 19940119; EP 0578966 B1 19960911
DOCDB simple family (application)
US 8718193 A 19930702; AT 93109171 T 19930608; DE 4223271 A 19920717; DE 59303727 T 19930608; EP 93109171 A 19930608