Verfahren zur Steuerung der Streckvorrichtung eines Spinnrahmens

Details

Veröffentlichungs-Nr.

EP3034661

Aktenzeichen

EP15200369

Anmeldetag

16. Dezember 2015

Veröffentlichung

20. Februar 2019

Erteilung

20. Februar 2019

Rechtsraum

EP

IPC

D01H5/36

Abstract

In a method for controlling a drafting device of a spinning frame, the drafting device includes a front bottom roller 12, a middle bottom roller 13, a back bottom roller 14, and motors (15, 16a, 16b, 17a, 17b) that independently drive the bottom rollers. The method includes changing a break draft ratio of the drafting device in a deactivation process of the spinning frame so that a load torque of the drafting device is smaller than when the break draft ratio is set to a value for normal operation to limit untwisting of the bottom rollers. The method further includes changing a main draft ratio when a fiber bundle, which has passed by the middle bottom roller 13 during a period the break draft ratio is changed, passes by the front bottom roller 12, to cancel influence on the fiber bundle of the changing in the break draft ratio.

Anmelder

Firma

KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Land

🇯🇵 Japan

Fachgebiete