(1) The structural form of the special-shaped reed is consistent with the design of the weft insertion system of the loom. Under normal circumstances, air-jet reeds on different air-jet looms should not be used interchangeably to avoid fabric defects and damage to the reed.
(2) Before using a new steel reed, the reed size, structure, firmness, elasticity of the reed blade, uniformity of the reed teeth, flatness and smoothness of the reed surface, and the perpendicularity of the reed blade and the reed beam should be checked before use. degree, airflow slot height and depth dimensions. If possible, check whether the airflow value meets the requirements.
(3) After the steel reed is off the machine, the slurry scale, etc. should be cleaned in time, and then the condition of each part should be checked, and the reed should be trimmed according to the requirements of the air-jet reed. The trimmed reed should be properly placed.
(4) The reed taken out from the reed repair room or the reed outsourced for repair must meet the quality requirements, and any problems found should be corrected promptly.
(5) When inserting the reed, the forward and reverse directions should be mastered to avoid incorrect reeding. The machinery and tools for reeding should be suitable, and the thickness of the reeding tool should be suitable for the gap between the reed blades. Generally, the No. 120 reed is used for 100/50.8cm, the No. 100 reed is used for 60 to 100 teeth/50.8cm, and the No. 80 reed is used for 60 teeth/50.8cm or less. The operation must be skillful and meet the requirements. Beginners generally do not wear high-density air reeds.
(6) Stop reeding. According to the reeding method required by fabric technology design, find out the warp yarn with the same reed teeth as the broken end and lift it up. Use a special tool to insert it on the upper end of the special-shaped reed, straight out and straight in. Do not slide the reed and do it gently.
(7) The interspersed reed tool should be within the 35mm range above and below the air jet reed, and should be avoided to prevent the steel reed teeth from breaking or becoming soft, resulting in a reed path. See Figure 8-3.
(8) The air-jet reeds cannot be pressed or stacked, and the airflow grooves on the reed surface cannot be in contact with each other. touch to avoid damaging the reed teeth.
(9) The position of the temple support should be appropriate to avoid damaging the reed surface.
(10) The temperature and humidity in the workshop should be appropriate and ventilated frequently to adjust the temperature and humidity and eliminate flying cotton and sizing. The temperature and humidity are related to the type of yarn, sizing, and the dryness of the sizing yarn. The temperature Control it between 25 and 28°C, the cotton yarn humidity is 73% to 78%, and the polyester-cotton blended yarn is 65% to 70%.
(22) Fixing of steel reed: When weaving on the weaving shaft, a torque wrench must be used to tighten the air-jet reed, and a torque wrench of 5N m (0.51kg m) is used to tighten the screws one by one from the middle to both sides. When checking the entrance position, avoid hitting the left reed edge to avoid bending the teeth.
(12) The position and amount of movement of the fabric fell in the reed groove
① It is better for the fabric fell to be above the center of the reed groove, and there should be no gap from the upper edge when beating up. Less than 0.3~0.5mm.
②The width of the air jet reed groove is mainly 5.5mm and 6mm. Therefore, the fabric mouth cannot jump up and down greatly. If the fabric mouth jumps out of this area, the cloth surface will be easily damaged by high and low peaks and the reed teeth will be damaged.
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