The working principle of the high-speed edgeless double twisting machine is based on the "one turn, two twists" technology, which achieves efficient twisting of yarn through a special mechanical structure. The core process is as follows:
Introduction and initial path of yarn
The yarn is led out from a stationary supply tube and passes through tension devices (such as tension beads and lining spindles) to form a grip point, ensuring stable yarn unwinding. Subsequently, the yarn enters the high-speed rotating hollow spindle, which is the starting point of twisting.
The first layer is twisted back to form
The yarn rotates with the spindle inside the hollow spindle. When passing through the radial guide hole of the yarn storage disk (or yarn storage disk), the first twist is obtained due to the rotation of the spindle.
. This process is similar to traditional ring twisting, but with a more compact structural design.Second layer twist back stacking
After the twisted yarn is exported from the storage reel, it is guided by the fixed guide hook (or pigtail guide hook) above.
. Due to the stationary guide hook and the yarn still rotating with the spindle, the air ring (the circular space formed by the rotation of the yarn) twists again at the guide hook, forming a second twist.Key condition: The grip point of the supply spool must be surrounded by the yarn air ring, ensuring that the twisting direction of the two twists is the same and overlapping.
.After winding and forming
The twisted yarn is fed through a super feeding roller (to control the yarn tension and feeding speed) and a transverse yarn guide (to evenly distribute the yarn), and then wound onto a tube to form the finished product.
. The winding mechanism is controlled by friction transmission or stepper motor to ensure that the yarn is tight and has no joints.Technical advantages:
High efficiency and energy saving: The spindle completes two twists per revolution, with twice the output of traditional ring spinning machines and a reduction in energy consumption of about 30%.
.Twist uniformity: By controlling the tension device and air ring, the twist fluctuation is reduced and the yarn quality is improved.
.Strong adaptability: It can process synthetic filament, multi strand wire, etc., and supports high-speed operation (spindle speed can reach 15000r/min).
.Application scenarios:
Widely used in chemical fiber, cotton spinning, wool spinning and other fields, especially suitable for production needs that require high twist and large roll capacity, such as sewing thread, industrial yarn, etc.