For the apron drafting area of the quilt production line, the twist coefficient of the roving can be appropriately increased, which is also beneficial to the development of the fiber art movement in the research on reverse loop control. During the spinning process of the spinning frame, the semi-finished roving or sliver is drafted, twisted, and wound into a spinning machine. The combed sliver and the needle-carding machine combine the sliver, the needle row is drafted to improve the sliver structure, and the roving is further spun into spun yarn on the ring spinning frame, which is the main spinning machine. Special equipment for the textile industry on the winder.
As the last process of spinning and the first process of weaving, winding is the link between the past and the next.“bridge”Therefore, it occupies an important position in the textile field. The structure of the double twisting unit of the double twisting machine mainly includes the spindle braking device, the spindle part of the double twisting machine, the yarn winding device, and the special device of the double twisting unit. The roving with more twist passes through the rear area, and the twist is not completely unraveled. The sliver with a large part of the residual twist of the enterprise is fed to the drafting area. Because the upper and lower skin maps in China are effective for the sliver Management control, so that the sliver does not flip between the upper and lower skins, eliminating the phenomenon of twist redistribution, so the remaining twist in this part of the countryside produces a centripetal under the action of the tension on the sliver drafting elbow The working pressure makes the fibrous tissue in close contact, which enhances the frictional force in the middle of the sliver, and effectively improves the control and the movement of the fiber cells.
As mentioned above, the reasonable use of barrier roving for twisting and the twist-controlled movement of the optical fiber plays an effective role in improving the uniformity of the yarn. The production experience is obtained, and the back roller is under sufficient pressure. If the sheep is pulled larger (1.36-1.50), the twist coefficient of the thick quilt yarn should be larger. Use 99.75-110.2 (1.05-inch thread twist? 1.1, such as cross- The drawing is small (1.25-1. 36), the yarn twist factor should be small, side by side 104.5 95. (1 inch twist factor 0-1.1) evenly has higher requirements on the yarn.
The knitting yarn, which is subsequently woven into the draft yarn, is smaller (1.04 times) than it should be, and will remain twisted to the front region most of the time. In order to make full use of the fiber twist control movement in the back roll, the front, with sufficient pressure, the roving twist factor pot was chosen slightly larger 104.5 to 114 (1.1 to 1.2 inch twist factor). Especially using the roving twist coefficient, which has not been quantitatively combined with the roving feed, the times extend from the corner wheel to the determined area, the fist area after rolling, temperature and humidity etc.?F actors.
The regain and stability of the roving twisting chamber should generally be controlled at high levels, not less than 6.5%, and should usually be controlled at 6.5 to 7%.