EP 3464691 B1 20230503 - YARN FORMING ELEMENT FOR A PRE-SPINNING MACHINE AND PRE-SPINNING MACHINE EQUIPPED THEREWITH
Title (en)
YARN FORMING ELEMENT FOR A PRE-SPINNING MACHINE AND PRE-SPINNING MACHINE EQUIPPED THEREWITH
Title (de)
GARNBILDUNGSELEMENT FÜR EINE VORSPINNMASCHINE SOWIE DAMIT AUSGERÜSTETE VORSPINNMASCHINE
Title (fr)
ÉLÉMENT DE FORMATION DE FIL POUR UNE MACHINE DE PRÉ-FILAGE ET MACHINE DE PRÉ-FILAGE ÉQUIPÉE DE CET ÉLÉMENT
Publication
Application
Priority
- CH 6752016 A 20160526
- IB 2017052586 W 20170504
Abstract (en)
[origin: WO2017203376A1] The invention relates to a twine forming element (17) for a pre-spinning machine, by means of which roving (2) can be produced from a fiber strand (1) using compressed air, wherein the twine forming element (17) comprises an inlet opening (3) for fibers of the fiber strand (1) and wherein the twine forming element (17) has an outlet (4) for the exit of the roving (2) produced during operation of the pre-spinning machine from the fiber strand (1) in the region of the inlet opening (3) of the twine forming element (17) and has a discharge channel (5) connecting the inlet opening and the outlet (4). According to the invention, the twine forming element (17) comprises an end face (6) which surrounds the inlet opening (3) and which has the shape of a truncated cone (27), at least in sections, wherein the cover area (7) of the truncated cone (27) is arranged between the base area (8) of the truncated cone (27) and the outlet (4) of the twine forming element (17), and wherein the angle (a) between a surface line (28) of the truncated cone (27) and the taper axis (K) thereof has an amount that is less than 90° and greater than 70°. The invention further relates to a pre-spinning machine having a corresponding twine forming element (17).
IPC 8 full level
D01H 1/115 (2006.01)
CPC (source: EP US)
D01H 1/115 (2013.01 - EP US); D01H 5/72 (2013.01 - US); D01H 7/92 (2013.01 - EP)
Citation (examination)
DE 102012108613 A1 20140320 - RIETER AG MASCHF [CH]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2017203376 A1 20171130; CH 712489 A1 20171130; CN 109154110 A 20190104; CN 109154110 B 20210618; EP 3464691 A1 20190410; EP 3464691 B1 20230503; JP 2019519690 A 20190711; JP 6972025 B2 20211124; US 10900144 B2 20210126; US 2019323151 A1 20191024
DOCDB simple family (application)
IB 2017052586 W 20170504; CH 6752016 A 20160526; CN 201780031625 A 20170504; EP 17723523 A 20170504; JP 2018561497 A 20170504; US 201716303267 A 20170504