EP 1052322 A2 20001115 - Actuating device for an oscillating looper of a sewing machine
Title (en)
Actuating device for an oscillating looper of a sewing machine
Title (de)
Antriebsvorrichtung für einen oszillierenden Greifer einer Nähmaschine
Title (fr)
Dispositif d'actionnement d'un boucleur oscillant d'une machine à coudre
Publication
Application
Priority
- CH 85999 A 19990507
- CH 227299 A 19991210
Abstract (en)
The drive mechanism for the looper, at a sewing machine, has a toothed pinion (17) in an eccentric mounting to the rotary ax (A) of the drive shaft (19) for the looper on catching the thread loop. The drive transmission is a toothed rack (15) or toothed belt between the crank drive (13) and the pinion (17). A guide sur ensures that the toothed rack (15) is held in contact with the pinion (17). The guide surface is within an opening at the end of crankrod (13), under the rack (15) and open at the end or a closed slit. The guide surface slides at a guide disk coaxial to the pinion (17) on the drive shaft (19). The guide disk is an axial end extension of the pinion (17) or is a separate component fitt on the drive shaft (19). A spring-loaded sliding shoe (33) is at a guide edge (37) on the crankrod (13), with a longitudinal sli movement. The guide edge (37) is generally parallel to the teeth of the rack (15), and is part of the crankrod (13). The sliding shoe (33) is pressed against the guide edge (37) by a spring-loaded lever (35). Where the transmission is through a toothed belt passes round the pinion (17) and a belt carrier or cogwheel, with an oscillating drive from the crank (13). The toothed belt is tensed by a spring-loaded tensioning lever and a tensioning roller. The drive pinion is on an eccentric mounting on the axis.
Abstract (de)
Zur Erhöhung der Drehgeschwindigkeit des Greifers (21) beim Erfassen der Fadenschlinge ist das Zahnritzel (17) zum Antrieb des Greifers (21) exzentrisch zur Drehachse (A) der Antriebswelle (19) für den Greifer (21) angeordnet. Eine entsprechend ausgebildete Führung hält die Zahnstange (15) jederzeit in sicherem Eingriff mit den Zähnen (27) des Zahnrads (17). <IMAGE>
IPC 1-7
IPC 8 full level
D05B 57/36 (2006.01); D05B 57/30 (2006.01); D05B 69/16 (2006.01); F16H 7/12 (2006.01)
CPC (source: EP US)
D05B 57/30 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE IT LI SE
DOCDB simple family (publication)
EP 1052322 A2 20001115; EP 1052322 A3 20011004; EP 1052322 B1 20030528; CN 1096518 C 20021218; CN 1273296 A 20001115; DE 50002325 D1 20030703; JP 2000342875 A 20001212; JP 4381561 B2 20091209; TW 573694 U 20040121; US 6182589 B1 20010206
DOCDB simple family (application)
EP 00810086 A 20000131; CN 00108241 A 20000430; DE 50002325 T 20000131; JP 2000132332 A 20000501; TW 92214580 U 20000315; US 54118100 A 20000403