Measures To Prevent Breakage In Rotor Spinning Production

It is impossible to avoid yarn breakage completely in rotor spinning. The yarn breakage has a certain effect on the output, quality and production rate of cotton yarn. The higher the breakage rate, the greater the damage. Therefore, the breakage should be minimized in production.

Decapitation site

The rotor speed of the rotor spinning machine is very high, the centrifugal force is large, and the negative pressure in the spinning cup is very high. Therefore, the air resistance of the whisker in the spinning cup is also greater during twisting.

When the annulus is still stripped away from the coagulating trough at the whisker stage, its ability to resist dry scratching is very poor at the moment when its twist is just beginning to take shape. If the strength of the bar is less than that of the friction resistance, air resistance and other factors, the yarn will break. Practice has proved that the broken ends of the rotor yarns are mostly caused by the segments between the peeling point and the twisting head.

Preventive measures for broken ends

One

Reasonable selection of process

According to the number of spinning yarns, the condition of cotton blending, the running state of the equipment and the quality of the fittings, the reasonable spinning speed and speed of the spinning cup should be selected. Such as: the spinning number is relatively large, and the cotton blending is relatively good. The important parts such as spinning cups, carding rollers, and twisting heads are also in good working condition. At this time, the spinning speed of the spinning cups can be selected higher and the yarn speed can be higher. In this way, we can not only give full play to the efficiency of the equipment, but also stabilize the product quality and reduce the breakage rate, and achieve the goal of high speed and high efficiency.

Two

Ensure the normal working state of the spinner.

1) any machine that must contact with cotton fibers must ensure that it is clean and bright. It is necessary to ensure the sharpness of the rack of the carding roller and not to have the phenomenon of falling teeth. It is better to repair and replace the spinning cup, carding roller, twisting head and conveying channel according to the cycle.

2) regular process parameters such as the pressure of the cotton plate, the distance between the cotton plate and the cotton roller, and the entry and exit positions of the cotton jaw can be checked and adjusted regularly. And ensure that the cotton plate and cotton roller are flexible.

3) periodic inspection and replacement should be made for the distance between the inlet and outlet of the spinning machine and whether the rubber gaskets are damaged or falling off, so as to prevent leakage and affect the negative pressure in the spinning cups.

4) regularly check and adjust the distance between the inlet and outlet of the miscellaneous pipe, ensure the clearance between the distributor and the distributor, prevent the broken ends of the yarn due to the blockage of the drain pipe.

Three

Guarantee the quality of semi-finished products

1) ensure that the moisture regain of the sliver is less than 8.5%, so the moisture content of the raw cotton should be less than 10%.

2) the impurities, dust and "three silk" contained in the raw materials should be removed as far as possible in the cotton cleaning and carding process. In this way, the influence of impurities and dust on the spinning cups and carding rollers can be reduced, and the breakage of yarn ends can also be reduced.

Four

Strict operation management

1) the truck drivers should do the cleaning work according to the prescribed time and requirements so as to keep the wind holes (ports) and passageways of the spinning machines smoothly.

2) the bar driver can not press the sliver too fast when changing the cotton sliver bucket to prevent sticking. On the other hand, cotton sliver should not be placed too long.

3) when joining, it is necessary to clean up the impurities and dust particles and the short pile around the exhaust holes of the spinning cup, so that the circulating air flow in the spinning cup is smooth.

In conclusion, there are many factors that affect the breakage rate of rotor spinning. As long as the process configuration is optimized, the normal running state of the equipment is ensured and the operation management is strengthened, the broken ends can be reduced and the quality and high yield can be achieved.