CN113423882B

CN113423882B - Ring traveler system of ring spinning machine

Info

Publication number: CN113423882B
Application number: CN201980092261.1A
Authority: CN
Inventors: N·帕塔萨拉蒂
Original assignee: N Patasaladi
Current assignee: N Patasaladi
Priority date: 2018-12-18
Filing date: 2019-06-27
Publication date: 2023-03-10
Anticipated expiration: 2039-06-27
Also published as: CN113423882A; WO2020129079A1

Abstract

The invention discloses an assembly for twisting and winding a yarn on a yarn tube mounted on a spindle, the assembly comprising: a ring member having a plurality of shells uniformly disposed along an inner surface thereof; a plurality of yarn guides housed in the housing, wherein a gap is provided between the housing and the yarn guides; an annular channel provided in the ring and having an air inlet through which compressed air is introduced into the annular channel and a plurality of air outlets through which compressed air is discharged at the housing, wherein at least one air outlet is provided at each of the housings, thereby cleaning the gap spaces or the yarn guides from fiber fluff or dust accumulated therein; and a traveler mounted on the ring member, wherein an inner end of the traveler resides on the yarn guide, the inner end of the traveler moving on the yarn guide as the spindle rotates, thereby preventing the inner end of the traveler from directly contacting an inner surface of the ring member.

Description

Ring traveler system of ring spinning machine

Technical Field

The present invention relates generally to an assembly for twisting and winding yarn around a yarn tube. More particularly, the present invention relates to an assembly for twisting and winding a yarn around a yarn bobbin in which traveler is mounted on a plurality of yarn guides arranged along the circumference of a ring.

Background

In the textile industry, yarns are made from different types of fibers, such as seed, leaf, hemp, rayon, and animal fibers, among others. Cotton and coconut shell fibers are known as seed fibers. Sisal and banana fibers are called leaf fibers. Fibers such as flax, hemp, jute, ramie, etc. are called hemp fibers. The fibers named polyester, viscose, modal, bamboo, lyocell, tencel, nylon, acrylic, and the like are rayon. Wool and silk fibers are animal fibers. However, all fibers can be classified by their length into three categories, namely short fibers (equal and variable in length), long fibers (variable in length), and continuous filament fibers.

In the case of cotton fibers, the length of each fiber varies. In addition, cotton fibers are relatively short in length compared to other fibers, and so can be classified as variable length staple fibers. Coir, leaf fiber, hemp fiber and animal fiber also have different lengths, respectively, but can be considered as long fibers having variable lengths due to their relatively high lengths.

Typically, rayon is produced in the form of continuous filaments. When these fibers are used normally (without cutting), they are called continuous filament fibers. When the staple fibres are cut to equal short lengths (depending on the quality requirements of the yarn), they are called cut short fibres of equal length. When these fibers are cut to variable short lengths (depending on the yarn quality requirements), they are called cut length variable staple fibers. Yarns are produced in the yarn manufacturing industry from individual (single) types of the above-mentioned fibers and mixtures of two or more of the above-mentioned fibers, based on the quality attribute requirements of the final product.

As shown in fig. 1 (prior art), typically in single strand yarn manufacture, a fiber ribbon/bundle is converted into a yarn (1) by adding twist. The twist is added by the rotation of the spindle (2) and the cyclic dragging (imparting tension to the yarn) movement of the traveller (4) on the surface of the ring (3). At the same time, winding of the yarn on the tube package (5) can also occur due to the speed lag of the traveller with the spindle. In the case of manufacturing multi-ply yarns in ring two-for-one twisting and heavy two-for-one twisting machines, twist is added to 2 or more strands of yarns/filaments (in terms of the number of folds) by means of the rotation of a spindle and the dragging movement of a wire loop on the ring surface. When twist is added to single and multiple yarn stacks manufacturing machines, the traveler drags over the ring surface with the pressure exerted by the tension of the moving yarn spinning, which drag results in the generation of heat on the surfaces of the traveler and the ring due to the direct frictional contact between them. When the heat increases beyond a certain level, this can result in the traveler flying/losing contact with the ring, or the moving yarn can break. Therefore, the productivity of such machines is limited by the traveler speed.

The type of traveler (combination of vertical and horizontal section) and the ring (vertical section) are chosen according to the type of fiber used to transform the yarn and the linear density of the yarn being produced.

The diameter and weight of the rings and traveler also vary according to the type of fibers used to produce the yarn and the linear density of the yarn being produced.

The disadvantages of the current rings and travellers are as follows:

1. the productivity of single-strand yarn manufacturing machines (ring frames) and multi-stack yarn manufacturing machines (ring two-for-one twisters/heavy-duty two-for-one twisters) is proportional to the spindle speed (number of spindle revolutions for twist addition). Spindle speed is limited by the traveler speed since at higher traveler speeds heat is generated on the surface of the ring and traveler. Currently, the maximum traveler speed in yarn making machines is only about 50 meters per second.

2. This limitation affects not only machine productivity, but also operational productivity.

3. The operation of the yarn manufacturing industry is assessed mainly on the basis of the productivity of the yarn manufacturing (ring spinning) machine.

4. The rings and rings have a limited service life due to excessive wear and heat generation between the surfaces of the rings and rings.

Therefore, there is a need to provide a new ring and traveler design for improving the machine productivity and operational productivity of single/multiple-ply yarn manufacturing machines.

Disclosure of Invention

Accordingly, in one aspect, the present invention provides an assembly for twisting and winding a yarn around a bobbin mounted on a spindle, the assembly comprising: a ring member having a plurality of shells uniformly disposed along an inner surface thereof; a plurality of yarn guides housed in the housing, wherein a gap is provided between the housing and the yarn guides; an annular channel provided in the ring and having an air inlet through which compressed air is introduced into the annular channel and a plurality of air outlets through which compressed air is discharged at the housing, wherein at least one air outlet is provided at each of the housings, thereby cleaning the gap spaces or the yarn guides from fiber fluff or dust accumulated therein; and a traveler mounted on the ring member, wherein an inner end of the traveler resides on the yarn guide, the inner end of the traveler moving on the yarn guide as the spindle rotates, thereby preventing the inner end of the traveler from directly contacting an inner surface of the ring member.

In some embodiments, the width of the bead ring is selected to ensure that the inner end of the bead ring is always in contact with the surface of the adjacent yarn guide.

In some embodiments, the minimum width of the traveler is equal to or greater than the distance between the centers of two adjacent yarn guides.

In some embodiments, the compressed air (7) is provided intermittently or continuously.

In some embodiments, more than 50% of the volume of the yarn guide is located within the housing to ensure that the yarn guide is located within the housing during operation of the assembly.

In some embodiments, at least two brackets are provided on the yarn guides and corresponding grooves are provided on the housing, the brackets being placed within the grooves to ensure rotational consistency of the yarn guides within the housing.

In some embodiments, the ring member is comprised of a top member and a bottom member, the top member and the bottom member being bolted together.

In some embodiments, the ring members are t-shaped (t), straight(s), ramp (i), t-shaped with a slotted casing (gt), straight with a slotted casing (gs), and ramp with a slotted casing (gi).

A hollow suction ring (fig. HSR) is installed at the bottom of the spinning ring (fig. SHS) through which the DU (fig. DU) unit sucks in the dust air released from the housing air outlet to ensure the spinning zone is clean. The diameter of the suction ring is equal to that of the spinning ring. The auxiliary suction holes are provided at the inner surface and the main suction holes are provided at the outer surface, through which air is sucked by the DU unit. The number of the auxiliary suction holes is equal to the number of the air outlets of the spinning ring. Further, the diameters of the inner hollow area and the secondary bore of circular cross-section are tapered opposite to the diameters of the primary and secondary air outlets for ensuring consistent suction over the entire inner surface of the suction ring.

DU (dual unit for blowing out and sucking in air) blows air towards the air inlet of the spinning ring through the blowing duct and sucks the same air from the main suction hole of the suction ring through the suction duct. The sucked air passes through a filter in the DU, where the dust is filtered and the clean air flows to the same blower. Since the blowing and suction actions are performed simultaneously, an effective cleaning of the spinning zone is ensured.

Drawings

Reference will now be made to embodiments of the invention, examples of which may be illustrated in the accompanying drawings. The drawings are intended to be illustrative, not limiting. While the invention is generally described in the context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.

Fig. 1 shows the working principle of twist addition in a yarn manufacturing machine according to an embodiment of the present invention.

Fig. 2 to 8 and 9 to 18 show vertical cross-sectional (bead ring section) and horizontal cross-sectional views, respectively, of various types of currently used bead rings, according to embodiments of the present invention.

Figures 19 to 26 show cross-sectional views of various types of rings currently used in all yarn-making machines, according to an embodiment of the present invention.

Figures t, s and I show cross-sectional and plan view model diagrams of rings t, s and I, respectively, according to an embodiment of the invention.

Fig. gt, gs and gi show model views of cross-sectional views of the rings gt, gs and gi, respectively, according to an embodiment of the present invention.

Figures t1 to t35 show a cross-section and a top view, respectively, of a ring t1 to t35 with yarn guides g1 to g35, a housing t1h to t35h, a gap t1c to t35c and a bead ring profile t1p to t35p, according to an embodiment of the invention (cf. Table 1).

Fig. s1 to s35 show a cross-sectional view and a top view of the rings s1 to s35 with yarn guides g1 to g35, housings s1h to s35h, gaps s1c to s35c and bead ring sections s1p to s35p, respectively, according to an embodiment of the present invention (refer to table 2).

Fig. i1 to i35 show a cross-sectional view and a top view of the rings i1 to i35 with yarn guides g1 to g35, housings i1h to i35h, gaps i1c to i35c and bead ring sections i1p to i35p, respectively, according to an embodiment of the invention (see table 3).

Fig. gt1 to gt35 show sectional views of rings gt1 to gt35 with thread guides (with holder-20) ghr1 to ghr35, housing (slot-21) gt1h to gt35h and gaps gt1c to gt35c, respectively, according to an embodiment of the invention (cf. Table 4).

Figures gs1 to gs35 show, according to an embodiment of the invention, a cross-section of a ring gs1 to gs35 with a thread guide (with a bracket-20) ghr1 to ghr35, a housing (slot-21) gs1h to gs35h and gaps gs1c to gs35c, respectively (see table 5).

Figures gi1 to gi35 show, according to an embodiment of the invention, a section of the rings gi1 to gi35 with thread guides (with bracket-20) ghr1 to ghr35, housings (slot-21) gi1h to gi35h and gaps gi1c to gi35c, respectively (see table 6).

Figure tra shows a front view of a model of the traveller zone with yarn guides, housing and clearance for t, s and i rings, according to an embodiment of the invention.

Fig. tra1 to tra35 show front views of the traveller zones with yarn guides g1 to g35 and respective housings with gaps of rings t1 to t35, s1 to s35 and i1 to i35, respectively, according to an embodiment of the invention.

Figure trag shows a front view of a model of the traveller zone with the gap of the yarn guide (with bracket-20), housing (slot-21) and rings gt, gs and gi according to an embodiment of the invention.

Fig. trag1 to trag35 show front views of the traveller zones with yarn guides (with bracket-20) ghr1 to ghr35 and respective housings (slot-21) with gaps of the rings gt1 to gt35, gs1 to gs35 and gi1 to gi35, according to an embodiment of the invention.

Figures g1 to g35 show front, top and side views respectively of a yarn guide g1 to g35 according to an embodiment of the invention.

Figures u, v, w, x, y and z show the catheter holder (20) and the recess (21) of the housing according to an embodiment of the invention.

FIGS. t2p, s2p and i2p show cross-sectional views of top and bottom blocks with rings t/gt, s/gs and i/gi joints, respectively, according to embodiments of the present invention.

The figures tmr, smr and imr show cross-sectional views of rings t/gt, s/gs and i/gi with multiple rows of carriers according to embodiments of the present invention.

FIG. SHS shows a cross-sectional view of an assembly of rings t/gt, s/gs and i/gi and a hollow suction ring, according to an embodiment of the invention.

Figure HSR shows a cross-sectional view and a top view of a hollow suction ring according to an embodiment of the present invention.

The diagram DU shows a double unit for blowing out and sucking in air according to an embodiment of the invention.

Detailed Description

The invention is directed to an assembly for twisting and winding a yarn (1) on a yarn tube (5), wherein a plurality of yarn guides (g/ghr) are housed within a housing (th/sh/ih/gth/gsh/gih) provided along the inner surface of (t/s/i/gt/gs/gi) for preventing any direct contact of the inner end of the traveler with the inner surface of the ring member.

Referring to fig. 2-18, fig. 2-8 illustrate different types of traveler that can be used in an assembly according to an embodiment of the invention, while fig. 9-18 illustrate different cross-sectional traveler that can be used in an assembly according to an embodiment of the invention. It will be appreciated by those skilled in the art that different shapes, cross-sections and dimensions of the traveller are within the scope of the invention, which can be used/varied as required without departing from the scope of the invention. The sections 4a to 4g represent various types of bead ring sections (vertical sections of bead rings). Section 4a is used for low linear density single strand yarn manufacture because it has a low thread path, while

sections

4b, 4c and 4d are used for single strand yarns with medium and high linear densities because they have a larger thread path.

Profiles

4e, 4f and 4g are used for multi-thread yarn manufacture in ring two-for-one and heavy two-for-one twisters. Sections 6a-6j represent various horizontal sections of the traveler, which are selected according to the type of fiber used for yarn manufacture. For example, 6c, 6d and 6e are for cotton yarn, while 6a, 6b, 6f and 6g are for synthetic yarn.

Sections

6h and 6i are for a mixture of natural and man-made fibres.

Fig. 19-22 show different types of rings that can be used in the assembly, while fig. 23-26 show different types of rings with a traveler mounted thereon, according to embodiments of the invention. In an embodiment, the following six types/shapes of rings may be used with a Hollow Suction Ring (HSR):

1.t-t shape

2.s-straight shape

3.i-oblique

4.gt-t-ring with slotted (21) case

5 gs-straight ring with slotted) (21) case

Gi-inclined ring with slotted (21) casing

It should be noted that the above references (t, s, i, gt, gs, gi) will be used throughout the present description to indicate/refer to the type of ring used and from which a person skilled in the art can deduce/appreciate what type of ring is used in the assembly.

Figures g1-g35 show different shapes of yarn guides that can be used in the assembly according to embodiments of the invention. It will be appreciated by those skilled in the art that the shape of the yarn guides is a design consideration and can be varied/selected as desired.

Figures t, s, i, gt, gs and gi show different types of rings that can be used in an assembly for twisting and winding a yarn on a bobbin, according to an embodiment of the invention.

In an embodiment, figure t1 shows an assembly in which a t-ring is used and on which a yarn guide shaped as shown in figure g1 is mounted. Similarly, figure t2 shows an assembly in which a t-ring is used and on which a yarn guide shaped as shown in figure g2 is mounted. Thus, one skilled in the art will appreciate that figures t1-t35 show a t-shaped ring fitted with yarn guides as shown in figures g1-g35, respectively.

In another embodiment, figures s1-s35 show a straight ring fitted with yarn guides as shown in figures g1-g35, respectively.

In another embodiment, figures i1-i35 show a ramp ring fitted with yarn guides as shown in figures g1-g35, respectively.

In another embodiment, ghr1-ghr35 show yarn guides with brackets according to embodiments of the present invention.

In another embodiment, figures gt1-gt35 show a t-shaped ring with a slotted housing, respectively, which mounts a yarn guide with a bracket as shown in figures ghr1-ghr 35.

In another embodiment, figures gs1-35 show a t-shaped ring with a slotted housing, respectively, that mounts yarn guides with brackets as shown in figures ghr1-ghr 35.

In another embodiment, the figures gi1-gt35 respectively show a t-shaped ring with a slotted housing that mounts the yarn guides with brackets as shown in figures ghr1-ghr 35.

Figure t shows an assembly for twisting and winding a yarn (1) on a yarn tube (5) according to an embodiment of the invention. The assembly includes a ring member (t) and a traveler (tp) mounted on the ring member. In an embodiment, the plurality of shells (th) are uniformly arranged along the inner surface of the ring member. A plurality of yarn guides (g) are housed/mounted in the housing. As shown, a gap (tc) is also provided between the housing and the yarn guide.

In an embodiment, an annular channel (9) is provided in the ring member. The annular channel has an air inlet (8) and a plurality of air outlets (10), wherein at least one air outlet is provided at each of the housings. In an embodiment, compressed air (7) is introduced into the annular channel through the air inlet and is discharged at the housing through the air outlet. During operation of the assembly, the compressed air cleans the interstitial spaces or the yarn guides of accumulated fiber fluff or dust. In an embodiment, the compressed air may be provided intermittently or continuously, depending on the type of fibers to be used to produce the yarn and the linear density of the yarn being produced.

In an embodiment, a hollow suction ring HSR (shown in fig. HSR) is installed at the bottom of the spinning ring (shown in fig. SHS), wherein the auxiliary suction hole is provided at the inner surface and the main suction hole is provided at the outer surface thereof. The circular hollow cross-sectional area tapers from the primary suction orifice opposite the diameter of the primary suction orifice to ensure consistent suction across the entire inner surface of the suction ring. Air is supplied by the DU unit through the blow-out duct to the air inlet of the spinning ring for cleaning the housing/yarn guide zone and this air is sucked by the DU unit through the suction orifice of the hollow suction ring and the suction duct (as shown in the diagram DU), thereby ensuring cleaning of the spinning zone. The sucked-in air passes through a filter in the DU unit, in which dust particles are filtered. The blowing and suction actions are performed simultaneously for obtaining an effective cleaning in the spinning zone.

Similarly, the figures s/i/gt/gs/gi show, according to an embodiment of the invention, an assembly for twisting and winding a yarn (1) on a spool (5), similar to the assembly described above. The assembly includes a ring member (t/s/i/gt/gs/gi) and a traveler (tp/sp/ip) mounted on the ring member. In an embodiment, a plurality of housings (th/sh/ih/gth/gsh/gih) are uniformly disposed along the inner surface of the ring member. A plurality of yarn guides (g/ghr) are housed/mounted in the housing. As shown, a gap (tc/sc/ic/gtc/gsc/gic) is also provided between the housing and the yarn guide.

In an embodiment, more than 50% of the volume of the yarn guide is located within the housing to ensure that the yarn guide is located within the housing when the assembly is used to twist and wind the yarn.

In embodiments, the width of the bead ring (trwc), as shown in the figures tra/trag, is selected to ensure that the inner end of the bead ring is always in contact with the surface of the adjacent yarn guide. For example, the width of the bead ring is selected to ensure that the width is equal to or greater than the distance between the centers of two adjacent yarn guides. This in turn ensures that the inner end of the traveller is always in contact with the surface of the yarn guide.

In an embodiment, at least two brackets (20/20 a) are provided on the yarn guide as shown in figure gt/gs/gi/v/y and corresponding grooves (21/21 a) are provided on the housing (as shown in figure gt/gs/gi/u/x). The bracket projects outwardly from the yarn guide and resides on a groove provided in the housing. Since the holder resides in the groove, further uniform/stable rotation of the yarn guides within the housing is achieved.

Fig. t2p/s2p/i2p shows an embodiment of the invention in which the ring member is composed of a top member (top block) and a bottom member (bottom block) which are bolted together.

Advantageously, the new design of the ring and traveler of the present invention greatly improves the productivity of single-and multi-stack yarn making machines with high spindle/traveler speeds by eliminating friction between the surfaces of the ring and traveler. The service life of the ring and the traveler is greatly increased due to the elimination of direct contact between the surfaces of the ring and the traveler. As machine productivity increases, operational productivity also increases. In the case of synthetic yarn manufacture, the fiber fusion problem is eliminated by the absence of heat between the surfaces of the ring and traveler.

In an exemplary embodiment, the following table shows components/features and corresponding reference numerals used in the drawings:

TABLE 1 ("t" Ring of FIGS. t1 to t 35)

TABLE 2 ("S" Ring diagrams s1 to s 35)

TABLE 3 ("i" Ring FIGS. i1 to i 35)

TABLE 4 ("gt" for rings FIG. gt1 to gt 35)

TABLE 5 ("gs" for rings gs1 to gs 35)

TABLE 6 ("gi" Ring diagrams gi1 to gi 35)

While the invention has been described with respect to certain embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

Claims

1. An assembly for twisting and winding a yarn around a spool mounted on a spindle, the assembly comprising:

a ring member (t/s/i/gt/gs/gi) having a plurality of shells (th/sh/ih/gth/gsh/gih) uniformly disposed along an inner surface of the ring member,

a plurality of yarn guides (g/ghr) housed in the housing, wherein a gap (tc/sc/ic/gtc/gsc/gic) is provided between the housing and the yarn guides;

an annular channel (9/15/18) arranged within said ring and having an air inlet (8/8 a, 14/14a, 17/17 a) and a plurality of air outlets (10/16/19), wherein at least one air outlet is provided at each of said housings, through which inlet compressed air (7) is introduced into said annular channel and is discharged at said housings through said air outlets, thereby cleaning the interstitial spaces or the yarn guides from accumulated fiber fluff or dust; and

a traveler (tp/sp/ip) mounted on the ring member, wherein an inner end of the traveler resides on the yarn guide, the inner end of the traveler rotating on the yarn guide as the spindle rotates, thereby preventing the inner end of the traveler from directly contacting the inner surface of the ring member.

2. The assembly for twisting and winding a yarn on a yarn tube mounted on a spindle according to claim 1, wherein the width of the traveller (trwc) is selected to ensure that the inner end of the traveller is always in contact with the surface of the adjacent yarn guide.

3. Assembly for twisting and winding a yarn on a spool mounted on a spindle according to claim 2, wherein the width of the traveller (trwc) is equal to or greater than the distance between the centres of two adjacent yarn guides.

4. Assembly for twisting and winding a yarn on a yarn tube mounted on a spindle according to claim 1, wherein the compressed air (7) is provided intermittently or continuously.

5. The assembly of claim 1 wherein at least over 50% of the volume of the yarn guide is located within the housing to ensure that the yarn guide is located within the housing during operation of the assembly.

6. Assembly for twisting and winding a yarn on a spool mounted on a spindle according to claim 1, wherein at least two brackets (20/20 a) are provided on the yarn guides and corresponding grooves (21/21 a) are provided on the housing, the brackets being placed inside the grooves to ensure further uniformity of the rotation of the yarn guides inside the housing.

7. The assembly for twisting and winding a yarn on a spool mounted on a spindle as claimed in claim 1, wherein the ring member is comprised of a top member (top block) and a bottom member (bottom block), the top member and the bottom member being connected with bolts.

8. The assembly for twisting and winding a yarn on a bobbin mounted on a spindle as claimed in claim 1, wherein the ring member is t-shaped (t), straight(s), ramp (i), t-shaped (gt) with slotted housing, straight (gs) with slotted housing, and ramp (gi) with slotted housing.

9. The assembly for twisting and winding a yarn on a bobbin mounted on a spindle as claimed in claim 1, wherein a Hollow Suction Ring (HSR) is mounted at the bottom of the ring member, the hollow suction ring comprising an auxiliary suction hole provided at the inner surface and a main suction hole provided at the outer surface, the DU unit blows the air towards the air inlet of the spinning ring through a blow-out duct and sucks the air through the suction hole and suction duct at the hollow ring, thereby performing blow-out and suction actions simultaneously to obtain effective cleaning in the area of housing/yarn guide/spinning.