The steel ring and the steel ring belong to the winding and twisting mechanism of the ring spinning frame, and they are used together. They complete the twisting, winding and spinning tension control of the sliver with the up and down reciprocating motion of the ring plate. In order to better complete the rolling and twisting, effectively control the spinning tension, stabilize the product quality and reduce the spinning end breakage, in addition to good equipment and mechanical state, we should also consider the selection of ring and coil models, and the correct maintenance and use in the high-speed and efficient environment, only in this way can we give full play to the role of both.
Use management of steel ring
One
Before boarding
After the purchase of new steel ring, first of all, a specially assigned person shall be responsible for the inspection of the surface roughness, burr and roundness of the ring one by one before the use of the machine; secondly, the surface of the ring shall be cleaned before the use of the machine to avoid yarn pollution; thirdly, the installation accuracy of the ring shall be ensured to meet the technical requirements of the equipment during the installation. The internal quality of the ring shall be tracked and checked according to the actual production situation after it is put on the machine, and the ring that fails to meet the requirements within the specified period shall be eliminated in whole batch or in part.
Two
After boarding
After the new ring is put on the machine, it has to go through a period of running in and running in, which is the premise of using the ring well and giving full play to the role of the ring. Under normal circumstances, the maturity period of domestic new steel ring upper machine is 7-15 days. The length of the maturity period is mainly related to the equipment status, and the main influence is the steel wire ring. In order to break in the normal track and extend the service life of the ring, the speed of the ingot after the ring is put on the machine is 15% - 20% lower than the normal speed. The steel ring should be slightly controlled by 2-3 numbers. At the initial stage, the steel ring should be replaced 5-8 times according to the type of product to complete the running in of the ring track. In addition, there are certain requirements for the use of yarn number during running in. It is suggested that the yarn number should not be too thin or too thick. Generally, when the yarn size is 19.4 tex to 11.7 tex, the running in effect of the ring is better.
Three
Daily use
In the daily use of the ring, a standing book should be established for the ring used on the machine and the variety of its production, so pay attention to the change of yarn number when changing spinning. When the yarn number changes greatly, it is recommended to replace the ring according to the actual situation, because the difference of yarn number will affect the geometry of the steel ring, which will cause the change of the running in position of the ring track or certain damage to the original track during the operation process. Therefore, after the alternation of yarn number, it is easy to increase the number of spinning ends, especially when the fine yarn is changed to the coarse yarn and then to the fine yarn. This is more obvious.
In the production process, if the rings that are not up to the scrapping period need to be stored after being taken off the machine, they should be protected against rust and other measures to avoid ring corrosion caused by improper storage and cannot be used.
Use and management of steel wire ring
In the actual production, after the specification of the steel ring is determined, the spinning tension and the shape of the air ring are usually controlled by adjusting the quality (weight) of the steel ring on the premise of meeting the yarn quality requirements.
The service cycle of the steel wire coil shall be determined according to the fluctuation of the product quality and the end breakage of the spun yarn. At the same time, the cycle account shall be established according to the service condition so that the specification and cycle of the steel wire coil can be determined quickly when the variety is changed. In general, the service cycle of the steel wire coil shall be controlled within 5-15 days. There is a certain running in and running in period after the new steel wire coil is put on the machine, generally within 24 hours. In order to ensure the high-speed operation of the spinning frame, the speed of the steel wire coil should be reduced and then increased after running in and running in period.
In terms of the management of steel wire rings, it is suggested to arrange a special person to take charge. Due to the variety and the large number of specifications, types and models of steel wire rings, it is necessary to distribute them correctly and quantitatively according to the variety process requirements and the modified spinning situation, so as to avoid the quality fluctuation and the waste of steel wire rings caused by the wrong use.
In addition, in the process of spinning, the spinning air ring changes with the winding of the tube and the lifting and descending time of the ring plate, the difference between the small yarn and the large yarn is large, and the tension also changes with the air ring during the whole spinning process. Besides the influence of the ring and the wire ring, the air ring is also related to the spindle speed of the spinning frame. Therefore, in order to make the spinning frame run at high speed and high efficiency, it is necessary to combine one Adjust the speed of big and small spindles during doffing to reduce breakage.
The selection, use and management of ring and ring is one of the key factors that affect the high-speed and efficient operation of ring spinning frame, and it is the basis of ensuring product quality, improving enterprise benefit and reducing production cost. It is a systematic work to make good use of steel ring and steel wire ring. We need to constantly explore and test according to the actual situation, and summarize our own experience. At the same time, it is suggested that the professional manufacturers of rings and rings should increase technological innovation and new product development, further improve the internal quality of rings and rings, so as to meet the current high-speed and efficient development needs of ring spinning frame.
