EP 0329947 B1 19920909 - METHOD AND APPARATUS FOR WINDING CROSS-WOUND PACKAGES
Title (en)
METHOD AND APPARATUS FOR WINDING CROSS-WOUND PACKAGES
Publication
Application
Priority
DE 3805656 A 19880224
Abstract (en)
[origin: EP0329947A1] With conical bobbins driven at a specific working speed, the circumferential speed of the bobbin at its two ends differs clearly from the circumferential speed in the longitudinal centre. These deviations are the greater, the smaller the particular outside diameter D of the bobbin and the higher the conicity of the bobbin. During piecing, the result of this is an adverse increase in the yarn tension (yarn breaks) or a loosening of the yarn (uneven winding). By means of the new method and the devices making it possible to carry it out, yarn breaks or an uneven winding pattern are avoided during the bobbin change and the piecing. In order, during piecing, to eliminate speed differences between the standard speed and the circumferential speed of the bobbin in the run-on region of the yarn, an actual outside diameter (D, D1, D2) of the bobbin or empty tube is determined and the driving speed of the bobbin or empty tube is varied in relation to the working speed as a function of the actual outside diameter. This method and these devices allow the high-speed winding of even sensitive yarns. <IMAGE>
IPC 1-7
IPC 8 full level
B65H 54/10 (2006.01); B65H 54/02 (2006.01); B65H 54/34 (2006.01); B65H 54/40 (2006.01); B65H 54/42 (2006.01); B65H 54/52 (2006.01); B65H 59/10 (2006.01); B65H 59/38 (2006.01); B65H 63/08 (2006.01); D01H 4/40 (2006.01); D01H 4/48 (2006.01)
CPC (source: EP US)
B65H 54/34 (2013.01 - EP US); B65H 54/42 (2013.01 - EP US); B65H 63/082 (2013.01 - EP US); B65H 2701/31 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0329947 A1 19890830; EP 0329947 B1 19920909; CS 112389 A3 19920115; CZ 284237 B6 19981014; DE 3805656 A1 19890907; DE 3805656 C2 19900613; DE 58902218 D1 19921015; JP 2662016 B2 19971008; JP H028151 A 19900111; US 4988048 A 19910129
DOCDB simple family (application)
EP 89101015 A 19890120; CS 112389 A 19890221; DE 3805656 A 19880224; DE 58902218 T 19890120; JP 3390689 A 19890215; US 31505089 A 19890223