What is Two for one twister (TFO)?
What is Two for one twister (TFO)?
The term T.F.O stands for Two-for-One, indicating that two turns are inserted for each turn of the twisting element. In earlier times, the process involved transferring two yarns onto a doubler winder, which served as the feed package for T.F.O. However, in modern systems, two smaller packages are stacked vertically and extracted concurrently, replacing the older method. T.F.O, at the yarn stage, provides enhanced evenness, strength, and elongation to the material. It also improves the yarn’s luster and abrasion resistance. When it comes to the fabric stage, T.F.O contributes to achieving greater stability, improved fabric roll, enhanced visual characteristics, and a better overall fabric handle. Upgrade your twisting machineries to the next level with our advanced solutions in Gujarat. Experience enhanced productivity, superior yarn quality, and efficient operations with Weavetech cutting-edge twisting machines.
Principle of TFO
The yarn unwinds from the feed package and passes through the tensor, reaching the snail wire by traversing inside the spindle and outside the rotary disc. Between the capsule and the bending part, the yarn receives its initial twist, followed by the second twist between the bending part and the snail wire. As a result, two twists are achieved with each rotation of the spindle. Elevate your textile manufacturing with Weavetech, the leading provider of top-quality textile machinery in India. From weaving to spinning and beyond, we deliver innovative and reliable solutions that optimize your production processes.
Main Features of TFO
Spindle: The T.F.O. twister offers double the productivity of a ring twister, as it provides two twisting with a single rotation of the spindle. To ensure smooth operation, the rotary disc is meticulously balanced and designed to eliminate vibrations, even at high speeds of up to 375 kmph in machines handling cotton yarns. The guides, crafted from Alumina porcelain, are carefully chosen to maintain the anti-abrasion properties of the specially processed rotary disc, facilitating a smooth sliding motion for the yarn. Revolutionize your textile manufacturing with Weavetech’s cutting-edge machinery in India.
Cheese Cover (Balloon Limiter): The purpose of the cheese cover is to prevent any interference between the unwinding yarn and the ballooning yarn. It remains stationary due to the magnetic force, even while the spindle is rotating. It’s crucial to note that even a small scar or scratch can potentially damage the yarn and result in ends down, as the yarn initially comes into contact with the upper edge of the cheese cover. Therefore, the cheese cover plays a vital role in ensuring the smooth and uninterrupted operation of the T.F.O. twister.
Cradle: Even a slight slip of the take-up bobbin can result in uneven twisting. To ensure smooth and effortless rotation of the bobbin, ball bearings are installed on both sides of the cradle. At the start of the winding process, a contact pressure of approximately 1.5 kg is applied to the package, allowing for seamless package drive. As the diameter of the package increases, the pressure is intentionally reduced proportionally, maintaining optimal winding conditions. This meticulous design and adjustment of pressure contribute to the reliable and consistent operation of the T.F.O. twister. Experience excellence in textile machinery manufacturing in India with Weavetech, your trusted partner in India.
Feed Roller: By operating the feed roller at a circumference speed ranging from 157% to 181% higher than the yarn speed, the T.F.O. twister effectively converts the high ballooning tension into a lower take-up tension. This is made possible through the skilful utilization of slip between the yarn and the feed roller, which can be adjusted as desired by altering the yarn contact angle around the feed roller. This dynamic control of tension enables precise tension management during the twisting process, ensuring optimal yarn handling and superior quality output.
Ant patterning Device: The mechanism, incorporated within the gearbox, is designed to prevent ribbon winding and maintain consistent yarn path. It achieves this by slightly adjusting the cam speed at regular intervals, ensuring the smooth and uninterrupted flow of yarn without any disruptions. Unlock the potential of your textile manufacturing with Weavetech’s unrivalled machinery solutions in India.
Functioning of the rotating disc: The unwound yarn from the feed package automatically wraps around the circumference of the storage disc, passing through the inside of the spindle and the yarn guide of the storage disc. It then reaches the snail wire, where it undergoes diagonal twisting due to the air resistance. The extent to which the yarn winds around the storage disc is commonly referred to as the “storage angle” or “winding-off angle.” It is important to maintain a storage angle of less than 90 degrees to prevent the centrifugal force from causing unwinding variances, collapsing the balloon shape, and leading to yarn breakage. This type of breakage, known as “breakage caused by extended winding angle,” can be used to assess the twisting condition of the machine. The storage disc can be adjusted using the tensor mechanism.
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