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The twisting efficiency of twister is doubled
Summary：With double twist spindle as the main twisting machine, each rotation can add two twists to the plied yarn.
With double twist spindle as the main twisting machine, each rotation can add two twists to the plied yarn. There are three types of double twist spindles: vertical type, horizontal type and inclined type, with vertical type being the most (Fig. 2). It is composed of a rotating part such as a spindle rod, a spindle plate and a yarn storage disc, and a fixed part such as a yarn container and a hollow spindle tube.
The fixed part is sheathed on the outside of the rotary part, which is connected with the rolling bearing. The spindle disc is driven by the Dragon belt or spindle belt to drive the yarn storage disc to rotate together. In order to ensure that the fixed part is not affected by the rotating part, the braking device of the yarn container is generally installed. There are three braking modes: magnetic braking, gravity braking and mechanical braking. The plied yarn is drawn out from the top of the hollow spindle tube, goes through the side hole of the yarn storage disc, and is wound on the bobbin through the yarn guide hook and output roller.
When the spindle or storage disc rotates for one circle, one additional twist is added to the air ring part of the yarn in the hollow spindle tube and between the side hole of the storage disc and the yarn guide hook. When the direction is the same, two twists are obtained. The spinning speed of this kind of twister is as high as 14000 rpm, the twisting efficiency is doubled, and the bobbins with large capacity can be directly made. The number of doffing is reduced, but the power consumption is large and the joint operation is difficult.
The fixed part is sheathed on the outside of the rotary part, which is connected with the rolling bearing. The spindle disc is driven by the Dragon belt or spindle belt to drive the yarn storage disc to rotate together. In order to ensure that the fixed part is not affected by the rotating part, the braking device of the yarn container is generally installed. There are three braking modes: magnetic braking, gravity braking and mechanical braking. The plied yarn is drawn out from the top of the hollow spindle tube, goes through the side hole of the yarn storage disc, and is wound on the bobbin through the yarn guide hook and output roller.
When the spindle or storage disc rotates for one circle, one additional twist is added to the air ring part of the yarn in the hollow spindle tube and between the side hole of the storage disc and the yarn guide hook. When the direction is the same, two twists are obtained. The spinning speed of this kind of twister is as high as 14000 rpm, the twisting efficiency is doubled, and the bobbins with large capacity can be directly made. The number of doffing is reduced, but the power consumption is large and the joint operation is difficult.
