CN1170022C

CN1170022C - Method and device for producing an automatically twisted yarn

Info

Publication number: CN1170022C
Application number: CNB018019447A
Authority: CN
Inventors: ��T��¸�˹; T·德格
Original assignee: Hamel AG
Priority date: 2000-07-07
Filing date: 2001-04-28
Publication date: 2004-10-06
Anticipated expiration: 2021-04-28
Also published as: CN1386148A; DE50103343D1; EP1299585B9; ATE274083T1; TW490516B; KR100493736B1; EP1299585A1; KR20020063160A; EP1299585B1; TR200402205T4; AU2001263872A1; WO2002004722A1; DE10032708C1

Abstract

The invention relates to a device and method for producing an automatically twisted yarn (1), wherein at least two roves (2, 3) are initially guided between at least one false twisting device (4); the roves (2,3) are periodically and alternately provided with areas consisting of S and Z shaped twists which are separated from each other by areas devoid of twists (0), and the roves (2, 3) are subsequently combined in such a way that they become automatically twisted as a result of their own twists; the areas devoid of twists (0) are provided with a phase difference ( phi in the automatically twisted twined yarn (1). In methods and devices known per se used to carry out such methods, the rove threads often break and the automatically twisted yarn (1) lacks resistance. The aim of the invention is to provide a method and device for producing an automatically twisted yarn (1) which is as resistant as possible. The phase difference ( phi is thus produced by using at least one deflection roller (5) to guide at least one of the roves (2) onto a guide roller (6) once it has passed through the false twisting device (4), whereupon the roves (2, 3) are combined on the guide surface (6a) of the guide roller (6).

Description

Be used for making the method and apparatus of automatically twisted yarn

The present invention relates to a kind of method and device that is used for making automatically twisted yarn (Selbstzwirngarn).

By prior art, for example according to BP GB1144614, Germany has just opened data DE2637208 and United States Patent (USP) 4279120, known such method and apparatus.Here two or more the multiply rove at first be provided with alternately by means of so-called false-twisting device that S twists with the fingers and Z twists with the fingers and distinguishes, they are by non-twist or have less twisted district and be separated from each other.Then two strands of these class spun rovings merge in this wise, make two strands of yarns form a so-called automatically twisted yarn (English: self-twist-yarn) because its reverse twisted tendency is twisted with the fingers automatically.Two strands of rove non-twist or have the advantageously phase deviation of less twisted zone wherein.

Secondly (for example see Britain by the device that is used for producing this class automatically twisted yarn by the manufacturing of Platt UK limited company of known a kind of this type of prior art, Blackburn, the service manual of 888 types of Platt UK limited company " spinning machine of twisting thread certainly ").The merging of two strands of yarns is carried out by means of coupling collar in this device.In order to produce certain phase difference between the areas of non-twist of two strands of yarns, one of two strands of rove then deflect on the coupling collar by at first guiding by a steering ring after the false-twisting device, merge with another strand rove on coupling collar.

One rove proves favourable by steering ring deflection, because can adjust the areas of non-twist of two strands of rove thus or with the random phase difference between the less twisted district.Here actual showing, the intensity of the automatically twisted yarn of formation and the phase deviation of areas of non-twist have much relations.Propose in the described handbook of Platt company in order to reach high line yarn intensity, the phase difference of preferential choosing is 30 °.

But in known devices, often cause the fracture of coarse yarn, because they are because the friction on steering ring and coupling collar stands violent wearing and tearing.This wearing and tearing also cause the weakening of the automatically twisted yarn intensity of twisted.

Therefore the objective of the invention is, a kind of method and apparatus that is used for making automatically twisted yarn is provided, it can reach the high as far as possible intensity of automatically twisted yarn.

The feature that this purpose is represented with claim 1 and 11 realizes.The good scheme of this method is by obtaining in the dependent claims 2 to 10.The superior structural of device can obtain from dependent claims 12 to 14.With reference to accompanying drawing the present invention is done more detailed explanation by means of embodiment below.Accompanying drawing is represented:

Fig. 1: one is used for making the schematic representation of apparatus of automatically twisted yarn;

Fig. 2: one is used for producing and has that S that the cycle replaces twists with the fingers and Z twists with the fingers the schematic diagram of the false-twisting device of the rove of distinguishing;

Fig. 3 A: the illustrative diagram of the automatically twisted yarn that the rove among two gangs of Fig. 2 and is made by the merging of no phase difference by these rove;

Fig. 3 B: the illustrative diagram of rove among two gangs of Fig. 2 and the automatically twisted yarn made by its merging by these rove with the phase difference between the areas of non-twist;

Fig. 4: one is used for making the vertical view of the device of automatically twisted yarn;

Fig. 5: the side view that installs among Fig. 5;

Fig. 6: a kind of good form of implementation of pressing the device of Fig. 4.

Fig. 1 schematically illustrates a device that is used for making automatically twisted yarn.This device comprises that mainly one is used for producing the stretching device 11 of two strands of not

twisted rove

2 and 3, one makes the false-twisting device 4 in the zone that S that rove 2 and 3 cycles of giving replace and Z twist with the fingers by it, an and twisting apparatus 12, install interior two strands of

twisted rove

2,3 at this and merge in this wise, make their twisteds become an automatically twisted yarn 1.

Stretching device 11 is made 13,14 roll-type stretching device with two draw rolls in the embodiment in figure 1.False-twisting device 4 is a kind of known twisting units.It has two columniform basically, that axis is provided with abreast and around the oscillatjng twist roller 7,8 of its axis rotation.Here oscillatjng twist roller 7,8 mutual reverse rotations, and carry the

rove

2,3 that is clipped between them thus.Two oscillatjng twist rollers 7,8 also additionally move back and forth between two extreme positions vertically except rotatablely moving.Make two strands of rove that pass 2,3 twisted by this axially reciprocating, thereby obtain twisting.Obtain S at a vibration-direction rove and twist with the fingers, obtain Z at opposite reciprocating direction and twist with the fingers.Because oscillatjng twist roller 7,8 stops its axially-movable in reversal point, rove does not obtain twisted constantly at this.Therefore have alternately that S twists with the fingers and the zone of Z sth. made by twisting by areas of non-twist or have less twisted zone and separate.

Except that the false-twisting device 4 that has oscillatjng twist roller 7,8 shown in Fig. 1, also can adopt the clamp-type false-twisting device, for example described in the DE19827870, perhaps adopt the false-twisting device (described in US4 279 120) that makes rove obtain twisting by air jet texturing.

Be directed on the guide roller 6 by a steering ring 5 at one of back two strands of rove 2 by false-twisting device 4, another strand rove 3 directly is directed to after passing false-twisting device 4 on the guide roller 6, and rove 2,3 merges merging point 13 places there.

When merging, two strands of

rove

2,3 show that the phase position of the areas of non-twist of two strands of

rove

2,3 has a significant impact the intensity of the automatically twisted yarn 1 of twisted.The automatically twisted yarn that expression one produces by two strands of

rove

2,3 twisteds in Fig. 3 A, wherein rove 2,3 twisted in this wise makes areas of non-twist directly face-to-face, that is to say does not have phase difference.Therefore areas of non-twist lays respectively at identical position in the automatically twisted yarn 1 of twisted.Because rove has less intensity in areas of non-twist, automatically twisted yarn also has less intensity at this position.

For this reason, two strands of

rove

2,3 are twisted in this wise, makes areas of non-twist not overlap, and shown in Fig. 3 B, is favourable.Areas of non-twist has a phase difference Φ there.Here phase difference Φ can twist with the fingers the part in the cycle in district and Z sth. made by twisting district for the S that replaces, and wherein 360 ° cycle is determined by two spacing L with the twisted zone of homophase.Phase difference Φ is about 90 ° in Fig. 3 B.

Contrast test shows, reaches maximum yarn strength at phase difference Φ between 135 ° the time at 90 °.

For with the little numerical value of wishing that just arrives of the phase difference between the areas of non-twist, be directed on the guide roller 6 by slewing rollers 5 by one of two strands of rove of Fig. 12.Guiding by slewing rollers 5 impels, and rove 2 is passed by than the distance of rove 3 length between false-twisting device 4 and merging point 13, and rove 3 is directed on the guide roller 6 after by false-twisting device 4 immediately.The distance that rove 2 is walked than rove more than 3 is determined the phase position Φ between the areas of non-twist.

In Figure 4 and 5, select at length to represent the structure and layout of roller 5 and 6.Rotatably mounted according to two

rollers

5 and 6 of the embodiment shown in the there, wherein perpendicular to passing through two strands of

rove

2 and 3 planes of determining, slewing rollers 5 are far away than guide roller 6 from false-twisting device 4 in the embodiment of Fig. 4 separately for its rotating shaft.Rove 2 at first guides by slewing rollers 5 after by false-twisting device 4, then guides on the guide roller 6.

By Figure 4 and 5 as seen,

roller

5 and 6 is made the dish type cylinder, wherein in order to guide

rove

2,3 to do a yarn guiding trough 14 better on the cylindrical shell face.Yarn guiding trough 14 prevents the spigot surface 5a of

rove

2,3 from

roller

5,6, the last side direction landing of 6a.

Merging on the spigot surface 6a that is incorporated in guide roller 6 of two strands of

rove

2,3 is put 13 places and is carried out.

Can adjust the additional distance that rove 2 is walked than another strand rove more than 3 by the spacing of

roller

5 and 6 rotating

shaft

5b and 6b between false-twisting device 4 and merging point 13.

Roller

5 and 6 supports in this wise for this reason, and their rotating

shaft

5b and 6b can be relatively moved in by two strands of

rove

2 and 3 planes of determining.

Show by the contrast test with the roller of different size, can reach maximum yarn strength with such roller, promptly its diameter S that replaces of being at least the automatically twisted yarn 1 of twisted twists with the fingers and Z twists with the fingers 10% of the Cycle Length L that distinguishes.

Secondly aspect the yarn strength of the automatically twisted yarn 1 that is produced, if two strands of

rove

2,3 distributions that are parallel to each other basically in the zone of false-twisting device 4 and in the zone before guiding by slewing rollers 5, wherein do not distribute along automatically twisted yarn 1 same direction in the zone of rove 3 between false-twisting device 4 and merging point 13 by slewing rollers 5 guiding, prove particularly advantageous with twisted.This distribution of

rove

2 and 3 before it merges is feasible can close sth. made by twisting in this wise, makes rove not meet with stresses, and perhaps can not be hooked on the guide roller 6, and this impels the spacing of the areas of non-twist of in the automatically twisted yarn 1 of

twisted rove

2 and 3 to remain unchanged.

As shown in the embodiment among Fig. 6, the automatically twisted yarn 1 of twisted can guide by a rotatably mounted backer roll 10 after the yarn direct of travel is merging point 13.This makes can be neatly and the automatically twisted yarn 1 that guides twisted unstressedly.The rove 3 that does not turn to by slewing rollers 5 also can be directed on the spigot surface 6a of guide roller by a backer roll 9 before merging point 13 along the yarn direct of travel equally.Guarantee that thus rove 3 accurately and be directed on the spigot surface 6a unstressedly.

Rove

2 and 3 merges the improvement of the yarn strength that obviously helps automatically twisted yarn 1 unstressedly, and an areas of non-twist spacing that remains unchanged on automatically twisted yarn 1 length that causes in addition.This improves cloth with 1 weaving of this automatically twisted yarn again in its intensity with in the performance aspect its eye impressions.

With well known in the prior art, make the merging device that turns to of steering ring and adapter ring and compare, the present invention has such advantage, and promptly rove can not wear and tear or damages owing to turning to and merging.Just at this moment because the wearing and tearing of

rove

2,3 appear in the friction of yarn on ring before they are merged into automatically twisted yarn.Secondly rove 2,3 may be hooked in ring, therefore often causes yarn breakage in manufacture process, and this causes the frequent and undesirable interruption in

manufacture process.Rove

2,3 hooks the inhomogeneities that may cause areas of non-twist spacing in the automatically twisted yarn 1 in ring in addition.This causes the bad outward appearance of cloth with this automatically twisted yarn weaving.

These shortcomings of prior art are avoided by such method by the present invention, be rove 2 and 3 by after the false-twisting device 4 by ring but by slewing rollers 5 and guide roller 6 guiding and then twisted, here two strands of rove 2, carry out on 3 the spigot surface 6a that is incorporated in guide roller 6, this guarantees clean and tidy and merges

rove

2 and 3 unstressedly.At this moment two strands of

rove

2 and 3 can not hook in coupling apparatus when merging.

Can make the automatically twisted yarn that has than high 60% tensile strength of common manufacturing with method of the present invention with by device of the present invention.

Claims

1. be used for making the method for automatically twisted yarn (1), at least two strands of rove (2 at first wherein, 3) between at least one false-twisting device (4), pass through, make rove (2 thus, 3) S that replaces of the cycle of giving twists with the fingers district and Z and twists with the fingers and distinguish respectively, they are separated from each other by areas of non-twist (0), follow rove (2,3) merge in this wise, make them because its intrinsic twisted automatic twisted, wherein areas of non-twist (0) has a phase difference (Φ) in the automatically twisted yarn (1) of twisted, it is characterized by: in order to obtain phase difference (Φ), in the rove (2) one is being directed on the yarn roller (6) by at least one slewing rollers (5) afterwards by false-twisting device (4) at least, and on the spigot surface (6a) of guide roller (6), carry out the merging guiding of rove (2,3).

2. by the described method of claim 1, it is characterized by: phase difference (Φ) is between 90 ° to 135 °.

3. by the described method of claim 1, it is characterized by: two strands of rove (2,3) in false-twisting device (4) zone and in the distribution that is parallel to each other basically before by slewing rollers (5) guiding, one rove (2) is directed on the guide roller (6) by slewing rollers (5) under the situation that changes original direct of travel (c), and another strand rove (3) does not change on the spigot surface (6a) that original direct of travel (c) is directed to guide roller (6), rove (2,3) is merged.

4. by the method for claim 3, it is characterized by: the rove (3) that guides by slewing rollers (5) is not directed to the spigot surface (6a) of guide roller (6) by a rotatably mounted backer roll (9), to merge with another strand rove (2).

5. by the described method of claim 1, it is characterized by: the automatically twisted yarn of twisted (1) guides by a rotatably mounted backer roll (10) at guide roller (6) afterwards along yarn direct of travel (c).

6. by the described method of claim 1, it is characterized by: the rove (2) by slewing rollers (5) guiding is gone up the angular area of applying between 70 ° to 200 ° at its spigot surface (5a).

7. by the described method of claim 6, it is characterized by: described angular area is between 80 ° to 120 °.

8. by the described method of claim 1, it is characterized by: go up the angular area of applying between 70 ° to 200 ° in guiding (6a) by the rove (2) that slewing rollers (5) are directed on the guide roller (6).

9. by the described method of claim 8, it is characterized by: described angular area is between 80 ° to 120 °.

10. be used for making the device of automatically twisted yarn, have at least one false-twisting device (4), give at least two strands of rove S that (2,3) replace and twist with the fingers district and Z sth. made by twisting district in this false-twisting device, they are separated from each other by areas of non-twist; Also has a twisted device, at least two strands of rove (2 in this twisted device, 3) can merge in this wise, be that their automatic twisteds become an automatically twisted yarn, wherein in the automatically twisted yarn of twisted the areas of non-twist of rove not on same phase place, it is characterized by: the twisted device is made of at least one slewing rollers (5) and a guide roller (6), wherein slewing rollers (5) make at least that one rove (2) departs from its original direct of travel (c) and is directed on the yarn roller (6), carry out on its spigot surface (6a) and the merging of another strand rove (3) at least.

11. by the described device of claim 10, it is characterized by: guide roller (6) and one or each slewing rollers (5) have 10% the diameter that a S who replaces who is at least the automatically twisted yarn (1) of twisted twists with the fingers Cycle Length (L) that district and Z sth. made by twisting distinguish.

12. by claim 10 or 11 described devices, it is characterized by: one or each false-twisting device (4) are made oscillatjng twist roller (7 columniform and that axis is provided with abreast basically by two, 8) constitute, they are around its axis (7a, 8a) reverse rotation, and between two extreme positions, do relatively reciprocating motion mutually vertically.

13. by claim 10 or 11 described devices, it is characterized by: guide roller (6) and one or each slewing rollers (5) are rotatably mounted, wherein its rotating shaft is perpendicular to by two strands of rove (2,3) plane of Que Dinging, and guide roller (6) is arranged on the back of these slewing rollers (5) or each slewing rollers (5) along the yarn direct of travel.