Production benefit analysis
At present, the demonstration speed of air-jet loom has reached 1900r/min, the effective speed is 500~850r/min, and the weft insertion rate has exceeded 2000m/min. The weft insertion rate of projectile looms is as high as 1200m/min, while the speed of rapier looms is generally 250-600r/min, and the weft insertion rate is around 1000m/min. Obviously, the speed of air-jet looms is higher among shuttleless looms, which also means that the output of a single machine is high. 1. The speed of the loom The economic speed of the loom can be calculated by the comprehensive unit energy efficiency ratio P of the loom: P=1/60×nη/６N In the formula: n——the speed of the loom; η——the operating efficiency; 6N——Comprehensive effect of loom. By adjusting a set of process test vehicle speeds and machine parameters, a reasonable economic speed can be obtained through actual measurement and calculation. 2. The output of the loom 1. Theoretical output The theoretical output of the loom = 60×n/P w /10 (m/unit hour) Pw is the weft density, the unit is: number of wefts/10cm 2. Actual output The actual output of the loom = Loom theoretical output , in order to obtain high benefits, the quality of spinning yarn must be improved. The yarn used for air-jet looms should be evenly dry, with a smooth surface and less hairiness; the yarn should have high strength; spliceless yarn should be used to reduce joint defects and loose joints. It is best to use automatic winding machine and air twister for winding. During warping, the tension should be uniform, the yarn arrangement should be uniform, and the warp beam should be flat. Adopt reasonable sizing formula and sizing process to ensure good pulp shaft quality. 2. Adopt a reasonable operating speed Under normal circumstances, excessively increasing the operating speed will lead to increased breakage of warp and weft yarns, increased material consumption, and reduced operating efficiency. High rotational speed does not necessarily lead to high output. Therefore, a reasonable speed with good overall benefits should be selected. The one-sided pursuit of high speed is uneconomical and unscientific. 3. Set up various process parameters and adjust the mechanism. During the production process, short weft, broken warp, uneven edges, weft rebound, and broken edges often occur, which may be related to the adjustment of process parameters and mechanisms. Precise adjustment of air-jet looms is the basis for improving production efficiency. 4. Human resources and environment The technical literacy and sense of responsibility of maintenance and operating personnel should be continuously improved, a working environment adapted to air-jet weaving should be configured, including the establishment of environmental cleanliness, temperature, humidity, etc., and the job responsibilities of personnel at all levels should be clarified.
AAAVSGREHTRY45
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