CN113423882B - Ring traveler system of ring spinning machine - Google Patents

Abstract

The present invention discloses an assembly for twisting and winding yarn on a bobbin mounted on a spindle, the assembly comprising: a ring member having a a plurality of housings; a plurality of yarn guides accommodated in the housings, wherein a gap is provided between the housings and the yarn guides; an annular channel, which is provided in the ring and has an air inlet and a plurality of Air outlets, wherein at least one air outlet is provided at each of the housings, through which compressed air is introduced into the annular channel and is discharged at the housing through which air outlets, thereby clearing the interstitial spaces or thread guides fiber fluff or dust accumulated in the machine; and a traveler mounted on the ring member, wherein the inner end of the traveler resides on the yarn guide, and when the spindle rotates, the inner end of the traveler rests on the yarn guide upward movement, thereby preventing the inner end of the traveler from coming into direct contact with the inner surface of the ring member.

Description

Ring traveler system for ring spinning machines

technical field

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

Background technique

In the textile industry, yarns are made from different types of fibers such as seed fibers, leaf fibers, hemp fibers, man-made fibers and animal fibers, among others. Cotton and coir 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. Fibers named polyester, viscose, modal, bamboo, Ecosel, Tencel, nylon, and acrylic are man-made fibers. Wool and silk fibers are animal fibers. However, all fibers can be classified according to their length into three categories, short fibers (equal and variable length), long fibers (variable length) and continuous filament fibers.

In the case of cotton fibers, the individual fibers vary in length. In addition, cotton fibers are relatively short in length compared to other fibers, so they can be classified as variable-length staple fibers. Coir, leaf, hemp and animal fibers also have individual lengths, however due to their relatively high length they can be considered long fibers of variable length.

Typically, man-made fibers are produced in the form of continuous filaments. When these fibers are used normally (not cut), they are called continuous filament fibers. When man-made fibers are cut into equal short lengths (according to the quality requirements of the yarn), it is called equal cut length staple fibers. When these fibers are cut into variable short lengths (according to the quality requirements of the yarn), they are called variable cut length 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 Figure 1 (Prior Art), usually in single-ply yarn manufacture, thin ribbons/bundles of fibers are transformed into yarns (1) by adding twist. Twist is added by the rotation of the spindle (2) and the cyclic drag (giving tension to the yarn) movement of the traveler (4) on the surface of the ring (3). Simultaneously, yarn wrapping on the tube package (5) also occurs due to the speed lag of the traveler with the spindle. In the case of multi-ply yarns in ring twisting and heavy-duty twisting machines, twist is added to 2 or more strands of yarn by means of the rotation of the spindle and the dragging movement of the traveler on the ring surface / filament (according to the number of folds). As twist is added to single-ply and multi-ply yarn-making machines, the traveler is dragged on the ring surface by the pressure exerted by the tension of the moving yarn spinning, due to the direct contact between the traveler and the surface of the ring. Frictional contact, so this drag causes heat to be generated on the surfaces of the traveler and ring. When the heat increases beyond a certain level, this can cause the traveler to fly off/lose 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 ring (vertical section) is chosen according to the type of fiber used to convert the yarn and the linear density of the yarn being produced.

Ring and traveler diameters and weights also vary according to the type of fiber used to produce the yarn and the linear density of the yarn being produced.

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

1. The productivity of single-ply yarn manufacturing machine (steel ring spinning machine) and multi-ply yarn manufacturing machine (steel ring two-for-one twister/heavy two-for-one twister) is proportional to the spindle speed (spindle revolutions for twist addition) . The spindle speed is limited by the traveler speed due to the heat generated on the ring and traveler surfaces at higher traveler speeds. Currently, the maximum traveler speed in a yarn making machine is only about 50 meters per second.

2. The limitation affects not only machine productivity but also run productivity.

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

4. Due to excessive wear and heat generation between the surfaces of the ring and traveler, the service life of the ring and traveler is limited.

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

Contents of the invention

Thus, in one aspect, the present invention provides an assembly for twisting and winding yarn on a bobbin mounted on a spindle, the assembly comprising: a ring member having an inner A plurality of housings uniformly arranged on the surface; a plurality of yarn guides accommodated in the housings, wherein a gap is provided between the housings and the yarn guides; an annular channel, which is provided in the ring and has Air ports and a plurality of air outlets, wherein at least one air outlet is provided at each of the housings, through which compressed air is introduced into the annular channel and discharged at the housing through which air outlets are provided, thereby cleaning Fiber fluff or dust accumulated in the interstitial space or in the yarn guide; and a traveler mounted on the ring member, wherein the inner end of the traveler resides on the yarn guide, and when the spindle rotates, the inner end of the traveler The end moves on the yarn guide, thereby preventing the inner end of the traveler from coming into direct contact with the inner surface of the ring member.

In some embodiments, the width of the traveler is selected to ensure that the inner end of the traveler is always in contact with the surface of the adjacent thread 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, 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 guide and corresponding grooves are provided on the housing, the brackets are placed in the grooves to ensure the consistency of the rotation of the yarn guide in the housing .

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

In some embodiments, the ring member is t-shaped (t), straight (s), canted (i), t-shaped with slotted shell (gt), straight with slotted shell (gs), and oblique (gi) with a slotted shell.

The hollow suction ring (Fig. HSR) is installed at the bottom of the spinning ring (Fig. SHS), through which the DU (Fig. DU) unit sucks the dusty air released from the air outlet of the housing to keep the spinning area clean. The diameter of the suction ring is equal to the diameter of the spinning ring. An auxiliary suction hole is provided at the inner surface and a main suction hole is provided at the outer surface through which air is sucked by the DU unit. The number of auxiliary suction holes is equal to the number of air outlets of the spinning ring. Further, the diameter of the inner hollow area and the auxiliary hole of the circular cross-section gradually decreases from the main air outlet to the opposite diameter of the main air outlet, so as to ensure consistent suction on the entire inner surface of the suction ring.

The DU (dual unit for blowing and sucking air) blows air to the air inlet of the spinning ring through the blowing duct, and sucks in the same air from the main suction hole of the suction ring through the suction duct. This sucked air goes through the filter in the DU where the dust is filtered and the clean air flows to the same blower. Effective cleaning of the spinning area is ensured due to the simultaneous blowing and suction action.

Description of drawings

Reference will be made to embodiments of the invention, examples of which may be illustrated in the accompanying drawings. The drawings are intended to be illustrative and 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 specific embodiments.

Figure 1 shows the working principle of twist addition in a yarn making machine according to an embodiment of the invention.

Figures 2 to 8 and Figures 9 to 18 show vertical sectional (traveler section) and horizontal sectional views, respectively, of various types of travelers in use according to embodiments of the present invention.

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

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

Figures gt, gs and gi are model diagrams showing cross-sectional views of rings gt, gs and gi, respectively, according to an embodiment of the invention.

Figures t1 to t35 show cross-sectional and top views of rings t1 to t35 with yarn guides g1 to g35, housings t1h to t35h, gaps t1c to t35c and traveler profiles t1p to t35p, respectively, according to an embodiment of the invention (Refer to Table 1).

Figures s1 to s35 show respectively cross-sectional and top views of rings s1 to s35 with yarn guides g1 to g35, housings s1h to s35h, gaps s1c to s35c and traveler profiles s1p to s35p according to an embodiment of the invention (Refer to Table 2).

Figures i1 to i35 show cross-sectional and top views, respectively, of rings i1 to i35 with yarn guides g1 to g35, housings i1h to i35h, gaps i1c to i35c and traveler profiles i1p to i35p according to an embodiment of the invention (Refer to Table 3).

Figures gt1 to gt35 show rings gt1 to gt1 to ghr35 with yarn guides (with bracket-20) ghr1 to ghr35, housings (slot-21) gt1h to gt35h and gaps gt1c to gt35c, respectively, according to an embodiment of the invention Sectional view of gt35 (refer to Table 4).

Figures gs1 to gs35 show rings gs1 to gs1 to ghr35 with yarn guides (with bracket-20) ghr1 to ghr35, housings (slot-21) gs1h to gs35h and gaps gs1c to gs35c, respectively, according to an embodiment of the invention Sectional view of gs35 (refer to Table 5).

Figures gi1 to gi35 show rings gi1 to ghr1 to ghr35 with thread guides (with bracket-20) ghr1 to ghr35, housings (slot-21) gi1h to gi35h and gaps gi1c to gi35c, respectively, according to an embodiment of the invention Cross-sectional view of gi35 (refer to Table 6).

Fig. tra shows a model front view of the traveler area with the yarn guide, the housing and the gaps for the t, s and i rings according to an embodiment of the invention.

Figures tra1 to tra35 respectively show front views of the traveler area with yarn guides g1 to g35 and respective housings with rings t1 to t35, s1 to s35 and i1 to i35 clearance.

Figure trag shows model front view of traveler area with yarn guide (with bracket-20), housing (slot-21) and gaps for rings gt, gs and gi according to an embodiment of the invention.

Figures trag1 to trag35 show front views of the traveler zone with yarn guides (with bracket-20) ghr1 to ghr35 and respective housings (slot-21) with steel Collar gt1 to gt35, gs1 to gs35 and gi1 to gi35 gaps.

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

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

Figures t2p, s2p and i2p show cross-sectional views of top and bottom blocks with ring t/gt, s/gs and i/gi joints, respectively, according to an embodiment of the invention.

Figures tmr, smr and imr show cross-sectional views of rings t/gt, s/gs and i/gi with multi-row yarn guides according to an embodiment of the invention.

Figure SHS shows a 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 invention.

Figure DU shows a dual unit for blowing out and sucking in air according to an embodiment of the invention.

Detailed ways

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

Referring to Figures 2-18, Figures 2-8 illustrate different types of travelers that may be used in assemblies according to embodiments of the present invention, while Figures 9-18 illustrate different cross-section travelers that may be used in assemblies, according to embodiments of the present invention. Those skilled in the art will appreciate that different shapes, cross-sections and dimensions of the traveler are within the scope of the present invention, which can be used/changed as required without departing from the scope of the present invention. Sections 4a to 4g represent various types of traveler sections (vertical sections of the traveler). Profile 4a is used for low linear density single-ply yarns because of its low thread channel, while profiles 4b, 4c and 4d are used for single-ply yarns with medium and high linear density due to its larger screw channel. Profiles 4e, 4f and 4g are used for the manufacture of multi-thread yarns in two-for-one ring twisters and heavy-duty two-for-one twisters. Sections 6a-6j represent various horizontal sections of the traveler, which are selected according to the type of fibers used for yarn manufacture. For example, 6c, 6d and 6e are for cotton yarns, while 6a, 6b, 6f and 6g are for synthetic yarns. Sections 6h and 6i are used for mixtures of natural and man-made fibres.

Figures 19-22 illustrate different types of steel rings that may be used in assemblies according to embodiments of the invention, while Figures 23-26 illustrate different types of steel rings with a traveler mounted thereon. In the examples, the following six types/shapes of rings can be used with hollow suction rings (HSR):

1.t–t shape

2.s – straight

3.i – oblique

4.gt – t-ring with slotted (21) housing

5.gs – Straight steel ring with slotted) (21) shell

6.gi – Angled steel collar with slotted (21) shell

It should be noted that the above references (t, s, i, gt, gs, gi) will be used throughout this specification to indicate/reference the type of ring used and from which a person skilled in the art can infer/appreciate the What type of ring is used.

Figures g1-g35 illustrate different shapes of yarn guides that may be used in assemblies according to embodiments of the invention. Those skilled in the art can understand that the shape of the yarn guide is a design consideration and can be changed/selected according to requirements.

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 embodiments of the invention.

In an embodiment, Figure t1 shows an assembly where a t-ring is used and a yarn guide of the shape shown in Figure g1 is mounted on the rigid collar. Similarly, Figure t2 shows an assembly in which a t-ring is used and a yarn guide of the shape shown in Figure g2 is mounted on the rigid collar. Therefore, those skilled in the art can appreciate that Figures t1-t35 respectively show the t-shaped steel rings installed with the yarn guides shown in Figures g1-g35.

In another embodiment, Figures s1-s35 show a straight steel ring mounted with a yarn guide as shown in Figures g1-g35, respectively.

In another embodiment, Figures i1-i35 show a tapered ring mounted with a yarn guide as shown in Figures g1-g35, respectively.

In another embodiment, figures ghr1-ghr35 show a yarn guide with a stand according to an embodiment of the invention.

In another embodiment, figures gt1-gt35 respectively show a t-ring having a slotted housing mounted with a yarn guide with a bracket as shown in figures ghr1-ghr35.

In another embodiment, Figures gs1-35 respectively show a t-ring with a slotted housing mounted with a yarn guide with a bracket as shown in Figures ghr1-ghr35.

In another embodiment, figures gi1-gt35 respectively show a t-ring having a slotted housing mounted with a yarn guide with a bracket as shown in figures ghr1-ghr35.

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 comprises a ring member (t) and a traveler (tp) mounted on the ring member. In an embodiment, a plurality of shells (th) are arranged in unison along the inner surface of the ring member. A plurality of yarn guides (g) are housed/installed 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 within 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 exhausted at the housing through the air outlet. During component operation, compressed air removes fiber fluff or dust accumulated in the interstitial spaces or in the yarn guides. In an embodiment, the compressed air may be provided intermittently or continuously depending on the fiber type to be used to produce the yarn and the linear density of the produced yarn.

In an embodiment, a hollow suction ring HSR (as shown in Figure HSR) is installed at the bottom of the spinning ring (as shown in Figure SHS), wherein auxiliary suction holes are provided at the inner surface and main suction holes are provided outside it at the surface. The circular hollow cross-sectional area tapers inversely to the diameter of the main suction hole from the main suction hole to ensure consistent suction over the entire inner surface of the suction ring. Air is supplied by the DU unit through the blowing duct to the air inlet of the spinning ring for cleaning the housing/yarn guide area, and this air is supplied by the DU unit through the suction hole of the hollow suction ring and the suction duct (as shown in DU shown) suction, thus ensuring a clean spinning area. This drawn air passes through a filter in the DU unit where dust particles are filtered. Blowing and suction actions are performed simultaneously for effective cleaning in the spinning area.

Similarly, Figures s/i/gt/gs/gi show an assembly for twisting and winding a yarn (1) on a tube (5) according to an embodiment of the invention, the assembly being the same as described above components are similar. The assembly consists of 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 shells (th/sh/ih/gth/gsh/gih) are provided in unison along the inner surface of the ring member. Multiple yarn guides (g/ghr) are housed/mounted in the housing. A gap (tc/sc/ic/gtc/gsc/gic) is also provided between the housing and the yarn guide as shown.

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 an embodiment, the width of the traveler (trwc) as shown in figure tra/trag is chosen to ensure that the inner end of the traveler is always in contact with the surface of the adjacent yarn guide. For example, the width of the traveler is chosen 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 traveler remains in contact with the surface of the yarn guide at all times.

In an embodiment, at least two brackets (20/20a) as shown in Figure gt/gs/gi/v/y are provided on the yarn guide and corresponding grooves (21/21a) are provided on the housing (such as Figure gt/gs/gi/u/x). The bracket protrudes outwardly from the yarn guide and resides on a groove provided in the housing. Further consistent/stable rotation of the yarn guide within the housing is achieved due to the carriage residing within the groove.

Figures t2p/s2p/i2p show an embodiment of the invention in which the ring member consists 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 single and multi-ply yarn manufacturing with high spindle/traveler speeds by eliminating friction between the surfaces of the ring and traveler machine productivity. Since direct contact between the surfaces of the ring and traveler is eliminated, the service life of the ring and traveler is greatly increased. As machine productivity increases, so does operational productivity. In the case of synthetic yarn manufacture, fiber fusion problems are 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 figures:

Table 1 (Figures t1 to t35 for "t" rings)

Table 2 (Figures s1 to s35 for "s" rings)

Table 3 (Figures i1 to i35 for "i" rings)

Table 4 (Figures gt1 to gt35 for "gt" rings)

Table 5 (Figures gs1 to gs35 for "gs" rings)

Table 6 (Figures gi1 to gi35 for "gi" rings)

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 can be made without departing from the scope of the invention as defined in the appended claims.

Claims (9)

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.

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