Design of the rapier drive mechanisms which contain spherical mechanism

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Thesis Type: Postgraduate

Institution Of The Thesis: Turkey

Approval Date: 2000

Thesis Language: Turkish

Student: MESRUR ERTÜRK

Supervisor: Recep Eren

Open Archive Collection: AVESIS Open Access Collection

Abstract:

In this work, it is aimed to design of the rapier drive mechanisms which contain spherical mechanisms. Insertion of the weft yarn with a tension as low as possible on rapier looms reduces the weft breaks and improves loom efficiency. Hence, it's endeavored to optimise rapier movement to reduce loads on weft yarn. Nowadays, the rapier drive mechanisms with different designs are in use. One of them is rapier drive mechanisms which contain spherical mechanisms and today it is used by different loom manufacturers. In the first section of the work, an information is given about weft insertion system by rapier principle and devices on the weft yarn path are examined. In the second section, at first a principal scheme of the rapier drive mechanisms which contain spherical mechanism is drawn and then analysed by both numerical and analytical methods. In the last section, a method is developed to determine the dimensions of the mechanism. A computer program is developed for calculations and results are demonstrated with graphics.