Reasonable selection of equipment and special parts is […]
Reasonable selection of equipment and special parts is the key to achieving high quality and high production of ring spinning frame.
Special parts of drafting equipment
a. Hanging ingot
The requirement for hanging spindles is that the damping of the roving must be consistent when the roving is unwinding, regardless of whether the large yarn, the middle yarn or the small yarn. If it is too large, the rotation of the hanging spindle is slow, and it is easy to cause drag and broken ends; if it is too small, the rotation of the hanging spindle is too flexible, and it is easy to cause the roving to slip off its own weight (commonly known as the "lower strip"). At present, there are many types of hanging spindles on the market, and the key lies in reasonable selection and maintenance. Generally, DD2 type hanging spindles are used for medium and thick yarns to avoid the problem of "under-striping"; DD5 and DD6 hanging spindles are more suitable for medium and thin yarns, which can reduce Roving problem.
With the increase of spindle speed, the requirements for rollers are getting higher and higher. Mechanical waves of various amplitudes are prone to appear, but mechanical waves are a comprehensive reflection and are related to the rollers themselves. It is also related to the installation and maintenance of the rollers. As far as the quality of the rollers is concerned, the quality of the domestic rollers can fully meet the requirements of high-speed spinning.
c. Rubber roller and rubber ring
As the spinning speed increases, the requirements for the adaptability and wear resistance of the rubber rollers and aprons are higher. In the selection of the hardness of the rubber rollers and the treatment of the coating, it is necessary to meet the requirements of yarn quality and spinning production. , To prevent broken ends and difficult life problems caused by sticking, entanglement and winding phenomenon.