EP 4051832 B1 20240501 - OPEN-END SPINNING MACHINE, DRIVING PROCESS THEREOF AND CONTROL UNIT
Title (en)
OPEN-END SPINNING MACHINE, DRIVING PROCESS THEREOF AND CONTROL UNIT
Title (de)
OFFENEND-SPINNMASCHINE SOWIE VERFAHREN UND STEUEREINRICHTUNG ZUM BETREIBEN EINER SOLCHEN OFFENEND-SPINNMASCHINE
Title (fr)
MÉTIER À FILER À BOUT LIBRE, PROCÉDÉ DE CONTROLE DE CE MÉTIER À FILER ET UNITÉ DE CONTROLE
Publication
Application
Priority
- DE 102019129499 A 20191031
- EP 2020080339 W 20201029
Abstract (en)
[origin: WO2021083985A1] The invention relates to an open-end spinning machine (1), comprising a plurality of workstations (2). Each workstation has a spinning apparatus (3) for producing a thread (7), a thread draw-off device (25) for drawing off the thread (7) from the spinning apparatus (3), a storage nozzle (26) for temporarily storing the thread (7), a winding apparatus (4) for producing a cross-wound bobbin (8), and a suction nozzle (14), to which negative pressure can be applied. The open-end spinning machine (1) is equipped with at least one service unit (16), which serves a plurality of the workstations (2) and has an auxiliary-thread delivery device (21) for delivering an auxiliary thread (24) and an auxiliary-thread draw-off (28), which are used in a piecing process at a workstation (2) to be served, in particular in the course of a cross-wound bobbin/empty tube exchange. The invention is characterized in that the auxiliary-thread draw-off (28) is designed in such a way and can be operated in such a way that the auxiliary-thread draw-off speed (AVS) of the auxiliary-thread draw-off (28) for drawing off the pieced auxiliary thread (24) has a speed offset, which takes into account the thread draw-off speed (AVA) of the thread draw-off device (25) and at least one additional correction factor.
IPC 8 full level
D01H 4/48 (2006.01)
CPC (source: CN EP US)
D01H 4/08 (2013.01 - US); D01H 4/48 (2013.01 - CN EP US); D01H 4/50 (2013.01 - US); D01H 15/00 (2013.01 - US)
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)
DE 102019129499 A1 20210506; CN 114616367 A 20220610; CN 114616367 B 20230818; EP 4051832 A1 20220907; EP 4051832 B1 20240501; JP 2023501958 A 20230120; US 12012672 B2 20240618; US 2022403560 A1 20221222; WO 2021083985 A1 20210506
DOCDB simple family (application)
DE 102019129499 A 20191031; CN 202080075568 A 20201029; EP 2020080339 W 20201029; EP 20800082 A 20201029; JP 2022525462 A 20201029; US 202017772884 A 20201029