BG111170A - Method and apparatus for spinning yarn with air vortex - Google Patents

Abstract

The method and apparatus will find application for spinning yarn by air vortex at high speed. In this method the movement of the feeder fiber (2) on the feed slack perforated cylinder (16) are formedand run as two associated groups of main fiber (3) and by the fibers (4) for fastening, which are twisted by two separate air vortex, rotated in opposite directions. The device includes a perforated outlet cylinder (16), on which are formed zone for supplying of the main fibers (3), zone for supplying of fibers (4) for fastening, and a common zone for connecting the fibers (4) for fastening of the main fibers (3 ) and the next zone for pulling of the free ends of the fibers (4). There are spinning chambers (7 and 9), which are placed one after the other and form a common body.

Description

Technical field

The invention relates to a method and device for spinning yarn of staple fibers with air vortex, which is used in the textile industry, and in particular for the production of yarn.

BACKGROUND OF THE INVENTION

A method and apparatus (1) is known for twisting yarn of staple fibers supplied by a pair of rollers, passing through a specially shaped conveying chamber terminating with a feed needle, twisting by a rotating air stream and being drawn through a fixed spindle opening. of the twist chamber like continuous yarn. The main part of the fibrous band receives a bough, and the other, consisting of protruding ends of fibers, does not receive boughs. In this method, the created free ends of fibers are twisted strongly before they enter the central entrance of the stationary spindle. The creation of loose ends of fibers is achieved by limiting the distribution of the twigs near the area of the filament web, providing a helical trajectory of the fiber web.

The disadvantage of this method is that the twisting air vortex from the tangential channels in the outlet torsion chamber creates strong centrifugal forces on the free ends of the fibers and the fibers leaving the delivery area with their rear end extend beyond the yarn as waste.

Another major disadvantage is the overall movement in the inlet chamber of all fibers bound in a ribbon, which makes it more difficult to form more loose ends of fibers.

Another major drawback is that this device is sensitive to foreign impurities present in the fiber web. These impurities disturb the stability of the air vortex, which degrades the quality of the yarn or clogs the small central opening of the spindle and interrupts the spinning process. The spinning speed is high and cleaning takes a long time.

SUMMARY OF THE INVENTION

It is an object of the invention to provide a method of spinning an air vortex of staple fibers in which feed fibers on a feed perforated drawing cylinder are formed and moved as two connected groups of base fibers and of fixing fibers which are twisted by two separate air fibers. vortices that rotate in opposite directions, which makes it less sensitive to foreign impurities and create a large number of free ends of fibers and maintain their free state until they enter the torsion chamber. where a strong yarn structure is formed at high spinning speed.

The problem is solved by a method of spinning the yarn with an air vortex from the fiber web, which is supplied by a pair of rollers, passes through a conveying chamber, is twisted by an air vortex and is drawn through the opening of the twisting chamber as a continuous yarn, such as between the delivery line of the fibers and the yarn opening, the main part of the fiber strip receives a sap, and the other consisting of protruding ends of fibers does not receive sutures. According to the invention, the feed fibers on the feed perforated puller •

the cylinder is formed and moved as two connected groups of basic fibers and of fixing fibers which are twisted by two separate air vortices which rotate in opposite directions, after the drawing line the fibers are fed to the inlet chamber where the fibers pass through different zones of sealing in such a way that the torsion of the main fibers from the torsional vortex of the torsion chamber is controlled from the inlet and the free rear ends of the fibers are subjected to tensile forces by the action of the vacuum in the outlet cylinders wor, then they are twisted around oformeshtata yarn is under the influence of rotation of the air vortex in the torsion camera. A spinning process with only a twist of the camera vortex may be performed without the twist vortex of the camera working. The trajectory and compaction of the basic and fixing fibers are controlled by the vacuum zones on the feed perforated drawing cylinder, and after the drawing line, the trajectory and compaction of the basic fibers are controlled by the torsional forces of the torsional vortex formed by two self-locking vortices. and the free ends of the fibers are controlled by the forces of the vacuum from the outlet draw cylinder and are sealed by the centrifugal torsional forces of the torsional vortex of the torsion chamber. The trajectory and compaction of the basic fibers and the pulling and twisting forces of the free ends on the outlet draw cylinder as well as the size of the twisting vortices, in the two forward chambers, can be varied independently of one another, and the inlet fiber web may be made up of different by fiber type.

The method implementation device consists of a conveying chamber for the formation of loose ends of fibers, placed close to the pull pair of rollers, and a torsion chamber connected to tangential channels for supplying compressed air and a central opening to bring out the finished yarn.

According to the invention, the surface of the outlet cylinder is perforated and a feed zone for the basic fibers, an area for feeding the fastening fibers is formed in the aperture and at the end a common area for connecting the fastening fibers to the main ones, and after the drawing line a drawing area is formed of the free ends of the fibers, and the spinning chamber is composed of two spinning chambers, with an inlet chamber being placed in the spinning chamber, after which the spinning chamber is inserted. A spinning chamber is a mounted chamber so that they form air spaces with the body, and the chamber has an inlet with a radius and an outlet with a larger radius and tangential openings are drilled at it at different angles to the axis of the chamber, such as the first angle is smaller than the second, and air is drawn into the spaces through different openings. The shutters mounted inside the perforated drawing cylinder are formed by an inclined zone for compacting the basic fibers of small width, a parallel zone for the movement of the fixing fibers, and a common area for connecting the two groups of fibers, which is shaped narrowing to a certain width, which continues and after the draw line at an angle. The inlet chamber is offset from the filament feed web and angled at the central axis, ending with a flat cross-section spaced from the inner surface of the inlet opening of the torsion chamber, which is less than its radius and away from the beginning of the camera.

The advantages of the proposed method of spinning the yarn with an air vortex of staple fibers according to the invention are that the movement of the feed fibers on the feed perforated drawing cylinder is controlled by initially passing through two zones of core fiber compaction and parallel movement of the fastening fibers and the subsequent joining of the two groups of fibers into one and then fed to the front chambers by a chamber where they are twisted by two independent vortices with different rotation directions , increases the number of loose ends of the fibers, resulting in a strong yarn structure at high spinning speed.

The advantages of the device are that on the surface of the perforated outlet cylinder control zones are formed for feeding the main fibers, a zone for feeding the fastening fibers and finally a common area for connecting the fastening fibers to the main and a subsequent area for pulling the free ends of fibers, and the front chambers are two in which tangential channels are formed to form two independent vortices in the main chamber and tangential openings to form a vortex in the second torsion chamber in the opposite direction of hiding floating fibers.

Explanation of the annexed figures

The device is explained in more detail with the accompanying example figures, of which:

figure 1 is a schematic diagram of the method figure 2 - longitudinal section of the device figure 3 - arrangement of the outlet of the inlet chamber relative to *

the opening of the main torsion chamber

Examples of carrying out the invention

In the method of spinning the yarn with an air vortex from the filament, a ribbon supplied by a pair of rollers passes through a conveying chamber, is twisted by an air vortex, and is drawn through the opening of the twisting chamber as a continuous yarn, such as between the delivery line of the fibers and the uptake of the yarn, the main part of the fiber strip yolks the bough, and the other, which consists of protruding ends of fibers, does not receive boughs. According to the invention, the feed fibers 2 on the feed perforated drawing cylinder 16 are formed and moved as two connected groups of basic fibers 3 and of fixing fibers 4 which are twisted by two separate air vortices 5 and 6 which rotate in opposite directions, such as after the line 0-0 filaments are fed to the inlet chamber 1, where the fibers pass through different compaction zones in such a way that the twisting of the main fibers 3 from the torsional vortex 5 of the torsional chamber 7 is controlled from the inlet the back ends of the fibers 4 are subjected to tensile forces by the action of the vacuum in the outlet cylinder 16, after which they are twisted around the spinning yarn 8 by the rotation of the air vortex 6 in the torsion chamber 9. A process may be carried out. spinning by twisting only from the torsional vortex 5 of the chamber 7 without operating the torsional vortex 6 of the chamber 9. The trajectory and compaction of the main 3 and of the fixing fibers 4 are controlled by the vacuum zones on the perforated delivery cylinder 16 and after the line of download casting 0-0 the trajectory and compaction of the basic fibers 3 are controlled by the torsional forces of the torsional vortex 5, which is formed by two independent vortices 5 'and 5 in the torsional chamber 7, and the free ones

end of fiber 4 se control by the forces of the vacuum by outgoing downloadable cylinder 16 and are compacted by centrifugal forces on twisting by the twisting vortex 6 on

torsion chamber 9. The trajectory and compaction of the basic fibers 3 and the pulling and twisting forces of the free ends 4 on the outlet draw cylinder 16 as well as the size of the torsional vortices 5 and 6 in the two forward chambers 7 and 9 can be varied independently of one on the other, and the incoming fiber ribbon 2 may be composed of different fibers.

The method implementation device consists of a conveying chamber for the formation of loose ends of fibers, placed close to the pull pair of rollers, and a torsion chamber connected to tangential channels for supplying compressed air and a central opening to bring out the finished yarn. According to the invention, the surface of the outlet cylinder 16 is perforated and below it in the apertures 21 are formed a zone for feeding the main fibers 3, a zone d for feeding the fastening fibers 4 and at the end a common area b for connecting the fastening fibers 4 to the main 3 and after the draw line 0-0, a zone 'b' is formed to pull the free ends of the fibers 4, and the spinner chamber is composed of two spinner chambers 7 and 9, with an inlet chamber 1 placed in the spinner chamber 9, after which the spinner is placed camera 7. The transfer chamber 7 is mounted in lug 10, so that the body 7 forms air spaces 11 and 1G, and the sleeve 10 has an inlet with radius d and an outlet with a larger radius R and tangential openings 12 and 12 'q which are below angles β and β 'with respect to the axis of the chamber 10, the first angle being smaller than the second, and air passing through different openings 13 and 13' in the air spaces 11 and 1D. The aperture 15 is mounted inside the

the perforated drawing cylinder 16 are a slanted area for compacting the basic fibers 3 with a small width c, a parallel zone for the movement of the fixing fibers d and a common zone b for connecting the two groups of fibers, which is formed narrowing to a certain width b ', which continues beyond the draw line 0-0 at an angle δ. Inlet chamber 1 is offset by aive from the feed orifice Ο - O of the fiber web 2 and angled α toward the central axis o-o, ending with a flat cross-section placed at a distance p from the inner surface of the inlet opening of the torsion chamber 7 , which is less than its radius d and at a distance x from the beginning of the camera 7.

Application of the invention

The staple yarn spinning device works as follows. The movement of the feed fibers 2 on the feed perforated drawing cylinder 16 is initially made through two zones 21 of compaction of the main fibers 3 and parallel movement of the fixing fibers 4 and subsequent connection of the two groups of fibers into one and then fed to the inlet chamber chamber 1, where they pass through different sealing zones in such a way that the twist of the main fibers 3 from the vortex 5 of the twist chamber 7 is controlled from the inlet and the free rear ends of the fibers 4 are subjected to forces of the tension from the action of the vacuum of the outlet cylinder 16, after which they are subjected to forces of pulling and wrapping around the forming yarn 8 by the rotation of the vortex 6 in the torsion chamber 9. As a result of the vacuum through the aperture 15 placed inside the perforated drawing cylinder 16, the main fibers 3 are compacted in the inclined short width sealing zone c, and the fixing fibers 4 move in a parallel zone of the fixing fibers d and connect to the main 3 in the common zone b which is narrowed down to marginal width b and continuing after the line drawing with 0-0 width Y'i angle δ. The trajectory and compressive strength of the fibrous web in the inlet chamber 1 can be varied. The inlet chamber 1 is adjusted by the distances a and c and the angle α with respect to the feed axis Ο - O that the core fibers 3 are sealed at the inlet of the chamber 1 by the torsional vortex 5 and the flat cross-section at the outlet of the chamber 1 is set at distance p from the inner surface of the torsion chamber 5, which is less than its radius d at the inlet, so as to seal the fibers 3, but to pass enough twigs to seal the fibers 3 to the 0-0 line. The radius d at the inlet of the torsion chamber 7 is smaller than the radius R at the outlet and forms the torsion chamber of the vortex 5, and through the openings 13 and 13 'the pressure of the air vortices 5 and 5' and from here the parameters of the vortex 5. Thus, the movement of the fibers by the vacuum in the cylinder 16 is carried out through the various zones of passage, compaction and is controlled from the inlet by the twisting of the main fibers 3 by the air vortex 5 of the chamber 7, and the free ends of the fibers 4 are subjected to pulling forces from the vacuum leading to magnifying not in their number, and after leaving the surface of cylinder 16 they zapridat to the core 3, as a result of reverse rotation of the air vortex 6 in the twisting chamber 9, which leads to higher speed of spinning.

Literature

1. Application No. US 5647197, D 01 H 5/00.

Claims (8)

Claims: 1. Method for spinning an air vortex of staple fibers supplied by a pair of rollers, passing through a conveying chamber under vacuum, twisted by an air vortex and being drawn through an opening of the twisting chamber as a continuous yarn, as between a line on delivery of the yarns and the yarn opening, the main part of the fiber web receives a twist and the other consisting of projecting ends of fibers does not receive twigs, characterized in that the feed fibers (2) on the feeder the perforated drawing cylinder (16) is formed and moved as two connected groups of basic fibers (3) and of fixing fibers (4) which are twisted by two separate air vortices (5 and 6) which rotate in opposite directions, as after the drawing line (O-O) the fibers are fed to the inlet chamber (1), where the fibers pass through different compaction zones in such a way that the twisting of the main fibers (3) by the torsional vortex (5) is controlled from the inlet the main twisting chamber (7) and the free rear ends of the fibers (4) are subjected to or the tension of the vacuum in the outlet cylinder (16), after which they are twisted around the forming yarn (8) by the rotation of the air vortex (6) in the torsion chamber (9) in the opposite direction, which in turn allows high speed spinning. Method according to claim 1, characterized in that a spinning process with twisting can only be carried out by the torsional vortex (5) of the main torsion chamber (7) without operating the torsional vortex (6) of the chamber (9) ). Method according to Claims 1 and 2, characterized in that the trajectory and compaction of the main (3) and the fastening fibers (4) are controlled by the vacuum zones on the inlet perforated drawing cylinder (16) and after the drawing line (O-O) the trajectory and compaction of the basic fibers (3) are controlled by the torsional forces of the torsional vortex (5), which is formed by two independent vortices (5'and 5) in the torsion chamber (7), and the free ends by the fibers (4) are controlled by the forces of the vacuum from the outlet draw cylinder (16) and are sealed by the centrifugal torsional forces of the torsional vortex (6) of the torsional chamber (9). Method according to Claims 1,2 and 3, characterized in that the trajectory and compaction of the basic fibers (3) and the pulling and twisting forces of the free ends (4) on the outlet draw cylinder (16) and the size of the twisting vortices (5 and 6) in the two forward chambers (7 and 9) can be varied independently of one another, and the incoming fiber web (2) can be made up of different fibers. The apparatus for carrying out the method according to claim 1,2,3 and 4, comprising an outlet perforated cylinder and a transport chamber for forming free ends of fibers, and a torsion chamber connected by tangential channels for supplying compressed air, characterized by is that on the surface of the outlet cylinder (16) is perforated and below it in the aperture (15) a zone (c) for feeding the main fibers (3), a zone (d) for feeding the fastening fibers (4) are formed and finally a common area (b) for connecting the fastening fibers (4) to the base (3) and after the drawing line (0-0) a zone (b ') is formed to pull the free ends of the fibers (4) and the front chamber is made up of two front chambers (7 and 9), after the inlet chamber (1) a spinning chamber (9) is inserted and a spinning chamber (7) is inserted after it. The device for carrying out the method according to claim 5, characterized in that a sleeve (10) is mounted in a compartment chamber (7) so as to form air spaces (11 and 1D) with the body (7) and the sleeve (10) ) has an inlet with a radius (d) and an outlet with a larger radius (R) and it has drilled tangential openings (12 and 12 ') that are at different angles (β and β') relative to the axis of the chamber ( 7), the first angle being smaller than the second, and in the spaces (11 and 11 ') high pressure air is supplied through various openings (13 and 13') and the inlet chamber (1) and the torsion chamber (9) are mounted in a common body (14) in which a high pressure air supply space (17) is formed. The method implementation device according to claims 5 and 6, characterized in that an inclined zone for compacting the basic fibers (3) with a small width (3) is formed in the aperture (21) placed inside the perforated drawing cylinder (16). c) a parallel movement area of the fastening fibers (d) and a common area (b) for connecting the two groups of fibers, which is formed narrowing to a certain width (b ') which continues beyond the drawing line (O-O) ) at an angle (δ). The method implementation device according to claim 5,6 and 7, characterized in that the inlet chamber (1) is displaced at a distance (a and c) from the filament (Ο - O) of the fiber web (2). and formed at an angle (a) with respect to the central axis (o-o), ending in a flat cross-section placed at a distance (p) from the inner surface of the inlet of the torsion chamber (7), which is less than its radius (d) and at a distance (x) from the beginning of the camera