EP 3967798 A1 20220316 - YARN THREADING ARRANGEMENT IN A PIECING UNIT OF RING SPINNING MACHINE
Title (en)
YARN THREADING ARRANGEMENT IN A PIECING UNIT OF RING SPINNING MACHINE
Title (de)
FADENEINFÄDELUNGSVORRICHTUNG IN EINER ANSPINNEINHEIT EINER RINGSPINNMASCHINE
Title (fr)
AGENCEMENT D’ENFILAGE DE FIL DANS UNE UNITÉ DE RATTACHE D’UN MÉTIER À FILER CONTINU À ANNEAUX
Publication
Application
Priority
IN 202041039153 A 20200910
Abstract (en)
The present invention relates to an automatic piecing unit (2) of a ring spinning machine (10) for piecing broken yarns. The automatic piecing unit (2) comprises a top suction tube (15) for holding an end of a broken yarn (12) inside, a gripper arm (3), a rocker arm (4), a tensioning arm (7) and a blow jet (6). The gripper arm (3) moves to hook the end of the yarn (12) held between the top suction tube (15) and the cop (17). A rocker arm (4) moves to hook the end of the yarn (12) held between the gripper arm (3) and the cop (17). A tensioning arm (7) is configured such that the yarn (12) held does not make contact with the balloon control ring (19) and guides upon the tensioning arm (7) and reaches the traveler (13) position without any hindrance. The gripper arm (3) and the rocker arm (4) holds the yarn (12) tangential to the ring (14) such that the yarn (12) is threaded inside the rotating traveler (13) by the blow jet (6).
IPC 8 full level
D01H 15/00 (2006.01); B65H 69/06 (2006.01)
CPC (source: CN EP)
D01H 15/00 (2013.01 - CN EP)
Citation (applicant)
US 3807155 A 19740430 - MIYAZAKI T, et al
Citation (search report)
- [A] US 4155215 A 19790522 - IGEL WOLFGANG [DE], et al
- [A] WO 2017064614 A1 20170420 - RIETER AG MASCHF [CH]
- [A] FR 1590677 A 19700420
- [A] CN 108842239 A 20181120 - SINOMACH INTELLIGENCE TECH RESEARCH INSTITUTE
- [A] EP 3521487 A1 20190807 - RIETER AG MASCHF [CH]
- [A] JP H03199436 A 19910830 - TOYOTA CENTRAL RES & DEV
- [A] EP 3222761 A1 20170927 - PREMIER EVOLVICS PVT LTD [IN]
- [A] EP 3567142 A1 20191113 - LAKSHMI MACHINE WORKS LTD [IN]
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3967798 A1 20220316; EP 3967798 B1 20231101; CN 114164530 A 20220311
DOCDB simple family (application)
EP 21189848 A 20210805; CN 202111057647 A 20210909