The Study Of Jet Weft Tension Test And Its Control

After decades of development, domestic air jet loom weft insertion system hasbeen improved, but compared with foreign air jet loom, air-jet looms in the loom,weaving efficiency and speed are put in bigger difference, narrow the gap is one of thefoundations of further clear air jet weft insertion process weft move regulation, allcited knitting process parameters and weft motion velocity and its head endfluctuation relationship between changes in. Therefore, to carry out research in theseareas for improvement and optimization of domestic air jet loom weft insertionsystem, improving air jet weaving efficiency has important theoretical meaning andpractical value.Air jet loom is set light, machines, electricity, gas, as one of the high-techproducts, because of its adaptability of fabric variety continuously expand, box width,weft insertion rate, efficiency, automation and intelligent level rises ceaselessly anddevelop rapidly, and become the most important weaving industry, demand, marketprospect is capacious. Weaving equipment. Air jet weft insertion is to air for the weftcarrier, use of air flow and injection into the characteristics of the beam, the weft intothe shed. At present, due to the jet weft insertion flow field research lacks thesystematic theoretical analysis and complete the experimental method, air-jet loomefficiency, reliability, energy consumption and other indicators failed to achieve thedesired level of. Therefore, the air jet weft insertion flow field research to deepen.This paper introduces the working principle of air jet weft insertion and air jetloom weft insertion flow involves the basic fluid dynamic theory, and based on theprinciple of fluid dynamics to establish a main nozzle of air jet loom and the auxiliarynozzle jet weft insertion flow numerical model, analyzed the main nozzle and theauxiliary nozzle jet flow field characteristics, put forward in the test at the same time reduce the peak tension and studied the use of weft tension controller on-off time toadjust the weft arrival time short fragment unevenness controlling method, theexperimental results of surface, this control method can greatly improve the controlperformance and the detection efficiency.