The air-jet loom inserts the weft by jetting air with a certain pressure. The weft insertion method is different from the mechanical weft insertion of the shuttle loom and other shuttleless looms. The speed of the mechanical weft insertion is limited by the mechanical movement, and the speed cannot be increased. Very high, such as the fastest weft insertion rate of rapier looms is only 1500-1700 m/min, and the weft insertion frequency is only 600-700 times/min. The action of jetting air from the nozzle of the air-jet loom is controlled by an electronic computer. The opening and closing movement of the air-jet loom is completed, and because the main nozzle of the air-jet loom has been changed from a single nozzle to a double nozzle and four nozzles, relative to a certain weft insertion rate and loom speed, the frequency of the solenoid valve opening and closing movement It can be reduced accordingly, so the jet weft insertion frequency of the jet air from the main nozzle of the air jet loom can be greatly increased. The weft insertion rate of the general air jet loom has reached as high as 2000-2500 m/min. The speed of the latest air jet loom has reached as high as 1800-2000 rpm /min, the weft insertion rate is 3200m/min. Such as Tsudakoma, Bicano and other air-jet looms.
The speed and weft insertion rate of the air-jet loom are related to the variety and width produced. The loom speed and weft insertion rate are different for the production of thin fabrics and heavy fabrics, and for the production of wide-width fabrics and ordinary wide-width fabrics. Even so , the speed of the air-jet loom producing heavy denim is also above 850 rpm, and the weft insertion rate for producing high-grade electronic jacquard decorative fabrics has also reached 2800 m/min.
To improve the weft insertion rate of the air-jet loom, in addition to solving the high-frequency opening and closing technology of the solenoid valve of the main and auxiliary nozzles under computer control, the stop and release actions of the weft feeder and the stop finger have also been improved accordingly. , under the program control of the electronic computer, the action of the weft feeder to park the weft yarn is very coordinated with the opening and closing action of the solenoid valve of the main jet jet.
In order to save energy consumption, the main nozzle has a fixed and moving mixed type, which improves the weft insertion capacity and reduces the consumption of compressed air.
In order to cooperate with high-frequency weft insertion, on the one hand, the components of the beating motion system have increased rigidity, and on the other hand, the reciprocating motion of weft beating is very smooth and precise.
In order to improve the flexibility and adaptability of the high-speed operation of the air-jet loom, the new air-jet loom adopts frequency conversion speed regulation, and the motor can be forward and reverse and inching. At the beginning of the 21st century, the speed of the air-jet loom will be further increased.
Post time: Apr-25-2023
