Overlapping and anti-overlapping of cotton quilt production line yarn beds

1. The quilt coil yarn overlaps? During the process of jeopardizing the friction drive winding, the diameter of the package gradually increases and the speed gradually decreases. Carding machines are used to process cotton fibers and chemical fibers and belong to textile machinery. According to the spinning process, carding is an important process.

The front process of the carding machine is the opening and cleaning machine, and the latter process is the drawing frame (carding process) or the sliver coiler (combing process). Grinder A spinning machine that turns fiber strands into rovings. The main function is to draft and twist, and to wind the roving into a certain package to meet the processing requirements of the spinning frame.

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. When the yarn feeder quilt line speed is constant, the number of revolutions of the yarn in one cycle or the number of bobbins is exactly an integer number of reciprocating cycles, and the yarn on the bobbin will overlap the front and rear. The rotation speed of the spool decreases continuously with the increase of the diameter, because the diameter of the transmission line quilt increases slowly, so the revolution in electrical reciprocating motion is almost constant, which is a number of yarn bobbins, which will continue to overlap for a period of time , resulting in dense ridges in the form of bobbins on the surface, making the bobbin drum (traversing drum) bad, not only subject to excessive friction caused by jitter or axial movement of the box on the part of the yarn, but also on the web causing side or Close spool defects.

In overlapping strips, where layers of yarn turns are tightly stacked, it is easy to insert another yarn turn, and the increased frictional resistance to warping during unwinding causes breakage to unravel. Soft grid-based winding bobbins for dyeing, overlapping too tightly will prevent tampered dye from penetrating, causing uneven dyeing, and the cheese needs to be washed or chemically treated, so it is. The anti-stacking measures of the quilt production line can generally be divided into the following categories: 0) The rotational speed of the drum that changes periodically.

Because cheese is, when the rotational speed of the grooved drum is periodically changed, the rotational speed of the bobbin is also changed by the frictional transmission to the grooved drum, but due to inertia, the speed always lags behind the change of the drum rotational speed and the grooved drum thus slides in between. When the package diameter reaches the overlapping condition, the displacement angle between adjacent turns of the yarn is not zero due to slippage, thus avoiding overlapping. (2) The bobbin bracket is selectively moved or swung in the auxiliary direction periodically, so that the adjacent yarns have a certain displacement angle, so that the occurrence of overlapping can be avoided.

(3) Prevent overlapping grooves. The use of special sliver traverse strokes in the drum itself prevents overlapping turns, such as the use of slots, grooves, around buttons, or similar break grooves to prevent the formation of virtual slot bending, simplifying the mechanism, and saving power consumption, thus Grooved drum winders are widely accepted.

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