RU1773267C - Yarn production device - Google Patents

Abstract

Usage: textile industry, spinning equipment. SUMMARY OF THE INVENTION: An exhaust device positioned in front of the ring-twisting mechanism has at least one roving retraction zone bounded on the exhaust side of the elongated roving by an exhaust pair of rollers. The lower drive roller of the exhaust pair has a suction zone located between the pressure roller of this pair and the pressure roller, which is installed with the ability to press the slippers to the lower roller at a distance from the vanishing zone. On both sides of the suction zone, there are two nozzles for supplying air along the lower roll perpendicular to its suction zone. The lower roller in the area where the sliver leaves it has a surface portion located along it to slide the sliver along the roller when it is twisted into yarn. 1 s.p.f.-ly, 6 ill.

Description

The invention relates to the textile industry and relates to a device for producing yarn on a ring spinning machine.

The aim of the invention is to increase the productivity and strength of the yarn.

In FIG. 1 is a partial sectional side view of a yarn producing apparatus; in FIG. 2 is a top view of a pair of rollers of an apparatus exhaust device; in FIG. 3 is a section AA in FIG. 2; in FIG. 4 is a front view of an embodiment of the device; in FIG. 5 is the same, side view with a partial section; in FIG. 6 - same, top view.

The device comprises an exhaust device 1 located along the roving 2 in front of the ring-twisting mechanism 3 having a spindle 4 with a drive block 5 and an annular bar 6 with a ring 7 on which the slider 8 is placed (Fig. 1)

The exhaust device has at least one elongation zone for the rovings 2, bounded on the exhaust side of the elongated rovings by an exhaust pair of rollers 9 and 10. The lower drive roller 10 is perforated and has a toe 12 located between the exit zone 11 and the pressure roller 9 an extension portion 13 for the sliver and a suction zone 14 located in this portion along it, in communication with the suction port 15.

The exhaust pair of rollers has a pinch roller 16, which is installed with the possibility of pressing against the lower roller 10 between the pressure roller 9 and the zone of vanishing 11 of the sliver from the lower roller 10.

On both longitudinal lateral sides of the suction zone 14, one discharge nozzle 17 is arranged for supplying air to the sliver along the lower roller 10 perpendicular to its suction zone 14 (Figs. 2-3). .

Vj

h

CA)

The suction region 14 of the roller 10 is placed in its circumferential direction between the area of the clip 18 of the sliver between the rollers 9 and 10 and the pressure zone 19 of the sliver to the lower roller 10 by the pressure roller 16.

A portion of the guide portion 13 on the lower roller 10 between the pressure roller 16 and the slipping area 11 of the sliver from the roller 10 is a surface portion for slipping the slipper and the waist of the roller when twisting it into yarn 20.

In the embodiment of FIG. 4-6, the device further comprises a ring-round mechanism, and the exhaust device further has a pull zone for each of the two roving coils 2 I coming out of the roving 2. The rollers 9 and 10 of the exhaust pair and the pressure roller 16 are common to both slippers 12. On the guide portion of the roller 10 between the pressure roller 9 and the pressure roller 16, a suction zone 14 is further provided for pressing the other slipper to the lower roller 10

Both suction zones 14 are arranged to form between them on the roller 10 a portion of the airtight surface 22 expanding in the direction of its rotation, to which an air supply nozzle 17 is placed between the suction zones 14.

The device operates as follows.

The roving 2 is sunk in the exhaust device 1, in the form of a sliver 12, a guide section 13 of the lower roller 10 of the exhaust pair is guided and pressed against it by the air flow generated in the suction zone. At the same time, the sliver is exposed to laterally directed perpendicular to the flow of nozzles 17, as a result of which the cross section 23 of the sliver becomes rounded, close to the shape of the cross section of the yarn (Fig. 3), This eliminates the need for flat the cross section of the sliver behind the pinch roller 16 in the area of the torsion triangle about the circular cross section of the yarn, which contributes to a better distribution of the fibers and thereby increase the strength of the yarn.

When the yarn rotates in a balloon around the spindle, its torsion extends up to the pressure roller, which allows the sliver to slide in the guide gap between this roller and the roller 10 along it and on a section of its surface in the zone of the slipper 11 coming off the roller 10, at the ends of the fibers protruding across the sliver are twisted around it, which contributes to a significant increase in the strength of the yarn.

In the embodiment of the device of FIG. 4-6, the toe is sealed by an air stream of the nozzle 17 directing the toe to the suction zones 14 of the nut 10, while the pressure roller 16 limits the lateral displacement of the toe.

The formed yarn 20 is wound onto a spade 24 mounted on a spindle.

The slipping of the sliver in the guide gap between the lower roller 10 and the pressure roller 16 along the roller 10 allows it to be kept close to a rounded cross-sectional shape.

Increasing the strength of the resulting yarn allows increasing the spindle rotation frequency without increasing its breakage and, accordingly, increasing the productivity of the device.

Claims (1)

1. A device for producing yarn containing at least one ring-twisting mechanism having a spindle and a ring with a slider, and an exhaust device located at the front of the ring-twisting mechanism along the roving, having at least one zone of elongation of the roving, limited on the side the outlet of the elongated roving with an exhaust pair of rollers, the drive lower roller of which has a guide section for the slipper located between the vanishing zone of the sliver from it and the pressure roller, the suction zone located on this section along it through holes evenly distributed around the roller circumference for pressing the slippers to it, characterized in that, in order to increase productivity and strength of the yarn, the exhaust pair of rollers of the exhaust device comprises a pressure roller mounted to hold it against the lower roller between the pressure roller and the zone soda slippers from the lower roller, and at least one nozzle for supplying air to the sliver along the lower roller perpendicular to its suction zone, located on at least one side of the suction zone, and the suction zone of the lower roller is placed in its circumferential direction between the clamping area of the sliver by the pressure roller and the lower roller and the zone of pressing it to the lower roller by the pressure roller, and the lower roller in the area of the slipping out of it has a surface portion located along it for sliding the sliver along the roller when twisting in yarn. 2, The device according to claim 1, with the exception that it further comprises the ring-twisting mechanism, and the exhaust device additionally has an extension zone for each of the two rovings, while in the guide section of the lower roller of the exhaust pair of the exhaust device between the pressure roller and the pressure roller, a suction zone is additionally made for pressing the other slipper to the lower roller, the suction zones on the lower roller are arranged to form between them on a roller expanding in the direction of rotation of the portion of the airtight surface, and a nozzle for supplying air is placed between the suction zones and is directed to the airtight surface of the lower roller. Priority on 11.29.88-on p. 1; 12.23.88-according to claim 2. paragraph Fig. / 1 10 1 T Riga.Z f p / L 7 2 Fig $ 22 K Compiled by N. Timofeeva Editor Y. Narodna Tehred M. Morgenthal Corrector N, Revska