EP 0536088 B1 19960327 - Modulated thread braking device for weft feeders
Title (en)
Modulated thread braking device for weft feeders
Title (de)
Modulierte Fadenbremse für eine Schussfadenliefervorrichtung
Title (fr)
Frein de fil module pour un fournisseur de trame
Publication
Application
Priority
IT TO910713 A 19910920
Abstract (en)
[origin: EP0536088A1] The device comprises a braking body which has a continuous circular extension, typically a truncated-cone body (12), which is supported by elastic means (13) frontally and coaxially to the drum (T) of the feeder (10) and is actuated by said means (13) into elastic contact engagement with its larger cross-section against said drum along a tangency circumference (C1) of the drum which is slightly smaller than the maximum one. The thread (F) runs between said drum (T) and said braking body (12) along an inclined path which extends between the tangency circumference (C1) of the braking body with respect to the drum and the smaller cross-section of the braking body. The braking body (12) has a cylindrical portion (120) which is rigidly coupled thereto at its smaller cross-section, extends into the annular gap of the skirt (18) of a permanent magnet (19) and is provided with a coil (20) which is supplied with an energization current (I) which is modulated in accordance with the variations in the mechanical tension of the thread; means (21-23 and 26-28) being provided for detecting the mechanical tension of the thread and for converting said mechanical tension into a corresponding electrical signal (t) used to modulate said energization current. <IMAGE>
IPC 1-7
IPC 8 full level
B65H 51/22 (2006.01); D03D 47/34 (2006.01); D03D 47/36 (2006.01)
CPC (source: EP)
D03D 47/34 (2013.01); D03D 47/364 (2013.01); B65H 2511/30 (2013.01); B65H 2551/22 (2013.01); B65H 2553/26 (2013.01)
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI PT SE
DOCDB simple family (publication)
EP 0536088 A1 19930407; EP 0536088 B1 19960327; DE 536088 T1 19930902; DE 69209424 D1 19960502; DE 69209424 T2 19960905; IT 1251209 B 19950504; IT TO910713 A0 19910920; IT TO910713 A1 19930320
DOCDB simple family (application)
EP 92830487 A 19920915; DE 69209424 T 19920915; DE 92830487 T 19920915; IT TO910713 A 19910920