RU1805145C - Device for manufacturing spun threads of two strands - Google Patents

Abstract

Usage: textile industry, obtaining a twisted yarn of two strands on a spinning and twisting machine. On the drive hollow spindle, bearing pa: forging with a screwed strand, a glass bottom is fixed. A ring is fixed on the upper end of the glass on which the slider is freely placed to guide the straight strand and press it against the upper end of the spindle in the area between the exhaust device and the connection point of the screwed strand coming down from the package on the spindle. 2 s. P. f-ly, 1 ill.

Description

The invention relates to the textile industry and relates to a device for producing a twisted yarn of two strands on a spinning and spinning machine.

The aim of the invention is to improve the quality of the twisted yarn by aligning the twists of its strands, increasing productivity and reducing breakage.

The drawing shows a General diagram of the device. .

The device comprises a drive hollow spindle 2 located under the exhaust device 1 with a package holder 3 with a screwed strand 4, Under the spindle there is a knot of winding twisted thread 5 onto a receiving package 6, rotated by a winding roller 7. In the area of the upper part of the spindle, a straightened strand guide is installed 8, having a slider 9, freely mounted on the ring 10. The ring is fixed coaxially to the spindle on the upper end of the glass 11, which is

ring holder. The glass 11 is located coaxially to the spindle and mounted on it with its bottom part 12.

The upper end 13 of the spindle is located above the upper end surface of the ring 10 at a distance a equal to 20-30 mm.

The device operates as follows.

The pull-out strand 8 leaving the exhaust device 1 passes through the thread conductor 14 and under the slider 9 on the ring 10, bends around the top end 13 of the spindle, connects to the screwed strand 4 coming from the package 3 on the spindle 2 and enters with it in the axial channel 15 of the spindle.

When the spindle rotates, a glass with a ring rotates with it and a straight strand tucked under the runner, which in the section between the thread conductor 14 and the runner under the action of centrifugal forces forms a cylinder 16, which creates a significant tension in section b.

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Due to aerodynamic drag of the balloon 16, the runner 9 slides on the ring and lags behind the rotation of the spindle 2. As a result, the portion b of the strand 4 rotates relative to the spindle. With this rotation of the strand 8 under tension, it rolls along the upper end 13 of the spindle, whereby the straightened strand receives an additional significant amount of torsion before it is connected and twisted with the screwed strand 4 due to its false torsion, which depends on the ratio of the diameters of the strand to the annular platform at the upper end 13 of the spindle along which the strand 8 rolls in, from the rotational speed of the runner on the ring and the speed of drawing the twisted thread 5 through the axial channel of the spindle.

For example, for the average number of twisted yarn at a relative rotational speed of the runner on the ring equal to 300, and the speed of the twisted yarn through the axial channel of the spindle; equal to 15 m / min, the straightened strand receives an additional about 600-700 kr / m. The strand 4 on the cob has approximately the same twist, as a result of which the twists of both strands in the twisted yarn are aligned and the overall twist of the twisted yarn is increased. If this twist of the twisted thread is exceeded by the required preset twist value, it is possible to increase the speed of its release and thereby increase the productivity of the device.

The optimum distance a is 20-30 mm. At large values of this distance, the strands are flooded one after the other when they are connected due to their rotation with different frequencies, and at smaller values of a, it is difficult to capture and remove the package 3 from the spindle 2 during its maintenance, for example, when eliminating the break .

As experiments have shown, the design of this device increases the overall twist of the twisted yarn by 15-20%, depending on the type of runner, ring, lubricant and type of strand fiber. Productivity is also increased by the same amount. In this case, the quality of the twisted yarn according to the balance of structure and strength is at

the quality level of the twisted yarn obtained according to the classical technology in four transitions - spinning, crushing, twisting and winding.

In addition, the false torsion of the straightened strand when it is rolled around the upper end of the spindle helps to reduce its breakage. In the weakest section of the exhaust device.

Due to the small relative

the speed of the runner on the ring, the wear resistance of the runner is not limited.

Claims (3)

SUMMARY OF THE INVENTION 1. A device for producing a twisted yarn of two strands, comprising an exhaust device, a drive hollow spindle located under it with a package holder with a screw strand mounted on it, located in the upper part spindle and associated guide straightened strand and a knot for winding twisted yarn located under the spindle, characterized in that the guide has a ring mounted coaxially the spindle by means of a holder rigidly connected with the spindle and the ring, and a slider freely positioned on the ring with the ability to press the extending strand to the upper end of the spindle in its section between the fume hood and its connection to the screwed strand. 2. The device according to claim 1, characterized in that. that the holder is a cylindrical cup mounted coaxially to the spindle and fixed thereto by a bottom portion, the ring being fixed to the upper end of the cup. 3. The device according to paragraphs. 1 and 2, with the proviso that the upper end of the spindle is located above the upper end surface of the ring at a distance of 20-30 mm.