Airflow Control
Sequence of activation for the auxiliary air jets assists the transport of the weft yarn across the shed in an air-jet loom. Precise relay nozzle timing ensures that a continuous wave of air pressure moves the thread at a constant velocity without causing yarn damage. This mechanism is the primary method for controlling the filling insertion over wide widths.
Energy Efficiency
Compressed air accounts for a large portion of the power consumption in modern weaving mills. By optimizing the relay nozzle timing, engineers can reduce air waste by ensuring that jets only fire when the yarn is actually passing them. Misaligned timing leads to excessive air use or a loss of yarn speed that results in filling failures.
Yarn Stability
Excessive air pressure or early firing can cause the tip of the yarn to double back or form loops. When the relay nozzle timing is perfectly synchronized with the yarn position, the filling remains straight and under slight tension. This control is especially important for delicate or low twist yarns that are susceptible to untwisting under turbulent air conditions.
Production Speed
Modern looms adjust these timings automatically based on real time data from arrival sensors. This responsiveness allows the machine to maintain maximum picks per minute even when the yarn package quality varies.
