Weft Thread Tension during Filling Insertion Process on Projectile Weaving Machines
Weft thread tension during filling insertion process on projectile weaving machines is time dependent and is characterised by big values of tension force maximums. As one can see from a number of investigations a weft yarn moves by jerks and vibrates though a projectile inserting a weft moves with a...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2016 |
| País: | México |
| Institución: | Universidad de Guadalajara |
| Repositorio: | Redalyc-UDG |
| OAI Identifier: | oai:redalyc.org:61448825004 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=61448825004 https://www.redalyc.org/journal/614/61448825004/ https://www.redalyc.org/journal/614/61448825004/html/ https://www.redalyc.org/journal/614/61448825004/61448825004.epub https://www.redalyc.org/journal/614/61448825004/movil |
| Access Level: | acceso abierto |
| Palabra clave: | Ingeniería jerk slack weft tension Projectile weaving machine compensator lever movement |
| Sumario: | Weft thread tension during filling insertion process on projectile weaving machines is time dependent and is characterised by big values of tension force maximums. As one can see from a number of investigations a weft yarn moves by jerks and vibrates though a projectile inserting a weft moves with almost constant velocity after its starting. In accordance with observations a weft thread forms slacks along it in the course its filling insertion. It follows owing to a short time during which a weft comes to a movement, a quick compensator lever movement and elastic properties of a yarn. When a weft slack is hauled in, a weft undergoes a jerk and so a maximum of a weft thread tension arises. First weft slack arises when a compensator lever quickly sinks and releases a weft thread. Then a projectile comes to a movement and hauls a weft slack. A part of a weft between a weft accumulator and a compensator comes to its movement during a short time and thus extremely big maximum of a weft thread tension force arises. We deduce formulas for this maximum of tension force, which we use as a basis for resolving of a problem of compensator function optimisation with the aim of to reduce a weft thread tension. Results of theoretical consideration and weft thread tension measurements are reported below. |
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