The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 2021
Filed:
Jan. 10, 2019
Method for automatically piecing a thread at a workstation of a textile machine, and textile machine
Maschinenfabrik Rieter Ag, Winterthur, CH;
Bernd Bahlmann, Schrobenhausen, DE;
Romeo Pohn, Geisenfeld/Rottenegg, DE;
Sebastian Brandl, Boehmfeld, DE;
Mario Maleck, Walting, DE;
Frank Baier, Hohenwart, DE;
Robert Hagl, Rottenegg, DE;
Thomas Gruber, Ingolstadt, DE;
Robin Wein, Manching, DE;
Christian Kettner, Koesching, DE;
Andreas Hoyer, Mainburg, DE;
Maschinenfabrik Rieter AG, Winterthur, CH;
Abstract
A method for automatically piecing a thread at a workstation of a textile machine, includes seeking an end of the thread on a surface of a bobbin with a suction nozzle and unwinding the thread from the bobbin counter to a regular draw-off direction of the thread and sucking the thread into the suction nozzle. The bobbin is driven in a direction of reverse rotation with a drive. A thread loop is draw-opened in the thread and moved towards a piecing unit via movement of a feeder unit. The bobbin is driven in the direction of reverse rotation during the drawing-open of the thread loop such that the thread is unwound from the bobbin. A speed of reverse rotation of the bobbin is coordinated with movement of the feeder unit.