EP 1683898 A2 20060726 - Draft device in pneumatic spinning device
Title (en)
Draft device in pneumatic spinning device
Title (de)
Streckwerk für eine pneumatische Spinnvorrichtung
Title (fr)
Dispositif d'étirage pour un dispositif de filage pneumatic
Publication
Application
Priority
JP 2005013261 A 20050120
Abstract (en)
In a pneumatic spinning machine 3, when a too thin sliver 6 is used as a material, the sliver 6 may slip out or its quality may be degraded. However, when a thick sliver 6 is utilized in order to prevent the above problem, the quality may also be degraded owing to the limitation of the drawing magnification of a draft device 7 in the pneumatic spinning machine 3. According to the present invention, a draft device 7 is provided in a pneumatic spinning machine 3 that spins out a spun yarn 9 using a sliver 6 supplied by a drawing frame 2. The draft device 7 includes four pairs of draft rollers, a back roller pair 11, a third roller pair 12, a second roller pair 13, and a front roller pair 14 arranged along a path on which the sliver 6 is conveyed. Further, the conveyance path of the sliver 6 is divided into a first section A, a second section B, and a third section C, each of which sections are enclosed by adjacent draft roller pairs. A fiber running control member 18 is arranged in the first section A to bend the conveyance path of the sliver 6 while the sliver 6 is being conveyed in the first section A (Fig.2).
IPC 8 full level
D01H 5/20 (2006.01)
CPC (source: EP)
Designated contracting state (EPC)
CH DE LI
DOCDB simple family (publication)
EP 1683898 A2 20060726; EP 1683898 A3 20070606; CN 1807720 A 20060726; JP 2006200069 A 20060803
DOCDB simple family (application)
EP 05027121 A 20051212; CN 200510129585 A 20051214; JP 2005013261 A 20050120