CN101437740B

CN101437740B - Process and device for rewinding feed spools

Info

Publication number: CN101437740B
Application number: CN2005800342099A
Authority: CN
Inventors: 拉里莎·奥什克斯; 乌韦·海特曼
Original assignee: Deutsche Institute fuer Textil und Faserforschung Stuttgart
Current assignee: Deutsche Institute fuer Textil und Faserforschung Stuttgart
Priority date: 2004-10-06
Filing date: 2005-10-05
Publication date: 2011-07-06
Anticipated expiration: 2025-10-05
Also published as: CN101437740A; DE102004048913A1

Abstract

A process and device are disclosed for rewinding thread feed spools produced on a ring spinning machine, the spools having a cone at their upper end that ends at the spool holder. The threads to be rewound are drawn overhead from the feed spools, joined and wound into a cross-wound bobbin. The usual gap between the top edge of the thread feed spool holder and the thread guide is considerably increased, so that the thread crosses a free section of more than 600 mm, and is not exposed to any further guidance in this section.

Description

Give the recoil method and apparatus of yarn axis

Technical field

The recoil method and apparatus of giving yarn axis that the present invention relates to for example on ring spinner, make, should have in the top towards the gradually thin cone of bobbin to yarn axis, and up yarn is detached this bobbin, wherein, the yarn of respectively giving the recoil of yarn axis is interconnected and is wound up on the intersection bobbin, and, before entering the reeling position, passing thread-carrier from the yarn of sending to yarn axis, this thread-carrier is arranged in and the place that is spaced a distance to yarn axis.

Background technology

This yarn axis of giving for example makes on ring spinner, and is commonly referred to cop.In order to obtain big yarn length, by automatic winder, on taper shape or column shape cross-winding bobbin, recoil these cop yarns, in this process, remove the defect yarn, for example slubbing fault or the like.

In order to reach high recoil speed, known a kind of recoil processing unit (plant) of drawnworking of being used to support.These devices are intended to avoid occurring the yarn air ring, and avoid the high yarn tension that occurs thus.At this, purpose is single air ring (causing bigger yarn tension) of avoiding under higher spinning velocity, and many air rings are comparatively favourable, in this case, in the time of especially will twining the body debatching in the cop lower end, obtains obviously less yarn tension.A kind of like this device has for example been described in DE 42 21 559 A1, described device has first limited part and second limited part, the position of described first limited part is lower, be used for yarn to debatching on the yarn axis, described second limited part has opening and directly is arranged in the winder upper limb top of bobbin.Generally, all these known air ring restraint devices are such devices, and it is by contacting the radially expansion (DE 1 213 322) that radially enlarges or end the yarn air ring of restriction yarn air ring with yarn in the air ring.

By this air ring restraint device, should extract the yarn that improves along with winding speed and rise out tension force and remain within the limit.The diameter of yarn air ring is big more, because the line tension that causes of centnifugal force is just high more, this finally causes broken yarn, thus and the interruption of the processing that causes reeling.In addition, along with the raising of winding speed, the yarn skidding in the yarn axis appears also giving.Some yarns are rolled up circlewise loose and are drawn high, thereby yarn twines mutually, and this causes broken yarn equally.Therefore, according to above-mentioned patent documentation (DE 42 21 559), a kind of controollable air sphere limiter has been proposed, described controollable air sphere limiter with air ring to pressing down, even thereby when giving the bottom debatching of yarn axis, the debatching angle of the line of debatching also is maintained greatlyyer from described conical area, and has reduced friction between the yarn of the yarn stayed on the bobbin and debatching.Thereby can reduce the mounting board (snapping up) of layer.

Although known devices is complicated, it is about 1 that winding speed is only brought up to, and 000m/min to 1,300m/min just have satisfied result.Using under the situation of air sphere limiter, yarn is owing to centnifugal force is crushed on the air sphere limiter, thereby owing to rub and fluff, and the yarn roughen.This causes such practice, in order to improve productive output, has to reduce yarn matter because of the recoil process makes.

Research (1957,1205 pages of Textilpraxis) in one's early years discloses, and for fear of single air ring, so that the mode of big as far as possible spacing to be set, can solve the problem that air ring forms problem and consequent high yarn tension between cop and thread-carrier.Studied the spacing that reaches 450mm in this regard.Implement bigger spacing in design and have technical difficulty (Melliand, 1956,386 pages), in addition, use air ring breaking plant (balloon breaking equipment) can obtain better result, thereby in the past 50 years, just because of following the ideal scheme that the conduct of air ring breaking plant is found.

Summary of the invention

The objective of the invention is, avoid the aforesaid drawbacks of prior art, and provide a kind of and can improve draw speed and do not make the method and apparatus of shoddyization of yarn.

By

claim

1,11,18 and 19 feature, reached above-mentioned purpose.The fact shows, if for the highway section between the bobbin and first thread-carrier, keep very large spacing, just can cancel common air sphere limiter.

The present invention based on understanding be that spacing LF according to the device of claim 1 and claim 10 not only causes obviously higher winding speed, and except improving technological condition, thereby also cause reducing significantly the damage of fluffing and reducing yarn significantly.Avoided because complexity and the high balloon breaker of cost that control piece causes.Can reach about 40% to 50% high winding speed, reduce broken yarn simultaneously more than 75%, and obviously reduce yarn and damage.

Description of drawings

Other details of the present invention is described with reference to the accompanying drawings.In the accompanying drawings:

Fig. 1 illustrates the up-coiler of prior art.

Fig. 2 illustrates up-coiler of the present invention.

Fig. 3 and Fig. 4 illustrate according to prior art with according to the present invention, the air ring in giving the extraction of yarn axis zone line.

Fig. 5 and Fig. 6 illustrate according to prior art with according to the present invention, the air ring in giving the extraction of yarn axis lower end.

Fig. 7 is illustrated in broken yarn relevant with gap length LF under the situation of yarn Nm50.

The another kind that Fig. 8 illustrates in the up-coiler that has a turning yarn road is arranged to yarn axis.

Fig. 9 illustrates and has the another kind of embodiment that suspension type is given yarn axis and several deflection thread-carriers.

Figure 10 and Figure 11 illustrate other embodiment of up-coiler as described herein.

Figure 12 and Figure 13 illustrate thread-carrier and are designed to pulley.

The specific embodiment

The reeling condition of conventional design shown in Fig. 1 has coiling bobbin 1, and this coiling bobbin 1 constitutes conical or columniform intersection bobbin usually, and is driven by take up roll or grooved cylinder 2.At this, yarn Y through the top of spool 8 from cop or from extracting out for yarn axis 81.Between spool 8 tops and coiling bobbin 1, be provided with thread-carrier 6, tightening device 5 usually, and slubbing defect detection device 4 and device of splicer 3.Between the yarn Y tapping point at cop 81 places and thread-carrier 6, form the yarn air ring since with the centnifugal force of the yarn Y of debatching velocity correlation connection, this yarn air ring causes very high yarn tension, thus restriction debatching speed.Therefore, as shown in fig. 1, above cop 81, arrange air ring breaking plant 7 in thread-carrier 6 the place aheads, to prevent to form bigger air ring.Cop 81 is transported to transmission dish 14 by means of feedway 13, by the rotation of described transmission dish, flows to yarn axis below the extraction point.When the extraction of yarn is finished, on gathering-device 15, empty spool 8 is transported away.

Several such coiling stations of layout on common frame, described common frame mainly comprise carries pipe 11, support 10 and support tube 12, and the described pipe 11 that carries is also simultaneously as suction socket.At this, the cost that bear is, yarn Y is with the described air ring breaking plant 7 of sizable friction striking, thereby yarn Y not only is subjected to the impact of tension force, and owing to friction influence yarn matter and increases the formation of fluffing.For air ring is suppressed with still irrelevant in the bottom of cop 81 drawn work (spacing with thread-carrier 6 under the both of these case changes) in the drawn work of the top of cop 81, this air ring breaking plant 7 can also be implemented as controollable.Described air ring breaking plant 7 is displaced into described cop top at every turn, makes yarn one leave described cop, yarn just arrives in the zone of air ring breaking plant 7 at once, thereby air ring can not take place.Can improve the speed of detaching in this way, but very narrow to the limit of this speed raising.Serious fluffiness takes place.

If prolong the upper limb of spool 8 and the highway section LF between the thread-carrier 6,, at first will enlarge air ring if do not prevented by air ring breaking plant 7.The yarn air ring that enlarges obviously increases yarn tension.It is that air ring subsides that this yarn tension increases final result, and yarn is attached on the bobbin and with it and rubs.Because produce the highest tension force in single air ring, target will be avoided single air ring exactly.Further enlarging under the situation of this spacing LF, although obtain a plurality of air rings, the quantity difference of air ring during debatching bottom from the cop top to cop.And under the situation of another air ring type transition high peak tension can appear from an air ring type, this may cause broken yarn.Therefore in recoiling technology, people just make great efforts by minimizing spacing LF and main by using various air ring breaking plants 7 to remove these peak tensions as far as possible.

If can between the upper limb of the bobbin 8 of giving yarn axis 81 and first thread-carrier 6, keep king-sized spacing LF, the open highway section that feasible formation is quite long, unexpectedly, the fact shows, under situation about doing like this, do not use the air ring breaking plant can reduce broken yarn very significantly yet.Fig. 7 illustrates the comparison of broken yarn, and this relatively is for example Nm50 poly-ester yarn to be measured under various debatching conditions by the debatching speed with 2200 meters.First vertical post is set at 100%, the broken yarn of measuring under the condition of the spacing LF=300mm between bobbin upper limb and the thread-carrier 6 when being illustrated in without the air ring breaking plant.As in early stage studies show that of technical development, by this spacing is increased to 450mm, broken yarn can be reduced to 65%.Under the situation of spacing LF=300mm and use air ring breaking plant, the broken yarn amount only is about 50%.Although, under the situation of not using the air ring breaking plant, can obviously reduce broken yarn, yet use the result of air ring breaking plant 7 further to reduce by 15%, that is, use air ring breaking plant 7 to reduce by half broken yarn by enlarging spacing LF.These results clearly illustrate that, enlarge the obvious minimizing that spacing LF causes broken yarn, yet use the air ring breaking plant can reach better result, and do not need to consider to implement the technical matters that big spacing is brought.Therefore, thinking over nearly 50 years that air ring breaking plant 7 is desirable solutions.Yet,, be merely able to improve debatching speed although this has been carried out number of research projects and proposed various solution very limitedly.

If the yarn Y debatching pattern of considering to use the yarn Y debatching pattern of air ring breaking plant 7 and not using air ring breaking plant 7 figure shown in Fig. 3 and Fig. 5 occurs so under the situation of using air ring breaking plant 7.Because structural reason is remaining under the situation of minimum conventional debatching length L 1, owing to use air ring breaking plant 7 to form a plurality of air rings, reduce yarn tension thus and can explain the obvious minimizing of broken yarn.If improve distance L F, even do not use air ring breaking plant 7 also can avoid single air ring.

Maximum tension occurs in the debatching process of cop bottom, at place, cop bottom, the yarn Y of extraction also attaches to (Fig. 5 and Fig. 6) on the bobbin 8, thus the danger that exists winder going along with to tear.Therefore, one of ordinary skill in the art's effort is to avoid: be attached on cop 81 or the reel 8 owing to subsiding of air ring makes yarn Y, thereby higher friction takes place, and friction can cause bigger yarn tension.Therefore, up to the present, people do research always about: by using various types of air ring breaking plants 7, work with spacing LF little between the top of bobbin bobbin 8 and the thread-carrier 6.Although can reduce tearing of yarn tension peak value and winder in this way, and can provide higher debatching speed, the raising of this productive output is made cost with yarn matter, therefore, is provided with limit for draw speed.

Now, we find, can not use air ring destructor 7 to carry out work under the condition of fully big spacing LF, and compare with the situation of using air ring breaking plant 7, can obtain quite high draw speed.Fig. 7 illustrates the broken yarn situation of 1000mm spacing LF with mode relatively.Enlarge by this spacing LF, broken yarn is reduced to 11%, and in other words, the broken yarn amount under the situation of this obvious increase spacing LF is only for can reach about 22% of broken yarn amount by means of the air ring breaking plant.Yet also obviously improved yarn matter at the same time.There has not been the friction at air ring breaking plant place, with regard to the noticeable wear that does not take place because of friction.Obviously, especially viewed yarn Y abuts in position on the bobbin 8, few of influence when the debatching of cop bottom.In addition, reduced the danger that is certain to cause broken yarn significantly with the tape winding tearing.By fully spacing LF being expanded to more than the 600mm, improved the debatching condition.This result is at beyong contemplation, because think in the past: can occur producing at least the friction of fluffing and making the yarn roughen on the bobbin 8 because of yarn being pasted be placed on.

For the debatching condition, reeling than is not play an important role yet.It is found that,, go up to reeling and being at least to the coiling ratio of reeling down and broken yarn aspect obviously improving debatching condition at 1: 2 with respect to common coiling ratio, under the situation of coiling ratio usually, with opposite relation, down to winding number less than last to winding number.Herein, reel than referring in spinning process, around the number of turn of yarn Y, and press the ratio of opposite path on the path from the cop heel lateral to top side around the number of turn of yarn Y.For example use 1: 4 coiling than obtaining good result.Should reel when on cone, reeling in the case, and be less than the yarn of 6m.Preferably, about coiling 4.5m yarn on the cone layer.In moving process, form the cone layer at this upper and lower volume.In addition, the height of cone layer is influential to the processing behavior of giving yarn axis 81.The height of cone layer should be not less than 40mm, yet should be greater than 90mm.For example fact proved that the cone height of 60mm is particularly advantageous.Thereby, significant limitation the tearing going along with of the layer on the coiling cone.

Like this, influenced the debatching condition for yarn axis 81 by on ring spinner, forming.Be known that harder bobbin can recoil De Gengjia.The fact shows, gives yarn axis 81 its hardness being at least reel under the situation of yarn tension of 50 ° of Shore hardnesss.For example when 60 ° of Shore hardnesss, show desirable processing behavior.By when form giving yarn axis 81, implementing these measures, can be when recoiling the debatching condition of added influence yarn.Yet ratio and/or the bobbin hardness of reeling is to the not influence of roughness of yarn.The roughness of yarn can be separately by spacing LF influence.

A large amount of experimentalists and technicians confirm the scope of desirable spacing LF at about 1000mm.

On the structure, can by replace the support 10 at coiling station with the support 100 (Fig. 2) of proper extension, implement this opening highway section LF in the simplest mode.Yet, can form suitable open highway section LF by different modes, for example by arranging the cop 81 of wanting debatching under the described up-coiler or behind described up-coiler.Be in tilted layout at the rear side of described up-coiler in Fig. 8, for yarn axis 81,, carry out the line of giving usually, thereby described highway section LF diagonal manner below the station of reeling is extended to yarn axis 81 at up-coiler rear side place.Therefore the aspect ratio support 100 of support 101 is low.

Be designed to pulley 61 (Figure 12) at as shown in Figure 8 embodiment middle yarn guider, thereby because deflection, yarn Y is without undergoing any abrasive friction.Pulley 61 rotatably suitably is suspended on the coro bearng, thereby pulley 61 can as far as possible freely rotate, and only bears minimum power loss by yarn Y, and not impacted by it.Replacement makes pulley 61 rotations by yarn, can also make pulley 61 rotations by external driver device, thus the friction that takes place owing to tractive under the situation that can not occur driving by yarn Y.Pulley 61 has groove 62, and what described groove 62 both can be designed to U-shaped also can design forming V-shape, to guarantee the better guiding of yarn Y and to penetrate (Figure 13).

As can be seen from Fig. 8, yarn Y is turned with angle [alpha] by thread-carrier 61.If the pulley that thread-carrier 6 is designed to rotate freely, though this turning 70 ° or more than, the fact shows that this turning also can be beneficial to winding process.Yet for the design and the formation of up-coiler, this understanding provides advantage, because more or less be straight walking in the yarn highway section single, no longer needs to carry out whole winding process.Use several deflection thread-carriers 61 also not have problem, for example from shown in Fig. 9.This is that two machines are presented the layout to yarn axis 81 by single feedway 13, allows be arranged in place, machine top position to yarn axis.In addition, the advantage of this layout is that various desirable spacing LF can be set ad lib.This layout also can be used for the up-coiler of conventional confguration.Even can also reduce assembling, this be because can with machine arrangement pitch LF independently mutually.

Figure 10 illustrates the another kind of open highway section LF and may arrange.Such as usual, below up-coiler, present to yarn axis 81.Open highway section LF is arranged in the front side of machine vertically, and has the highway section horizontal mode layout of device of splicer 3, slubbing fault catcher 4 and yarn tightening device 5.Adopt this layout, obtain lower system height, and only need a deflection thread-carrier 61.

Figure 11 illustrates a kind of embodiment that is similar to Fig. 9, however different be on base plate, to present to yarn axis 81 at the rear side of up-coiler.Empty mound bobbins 8 is transported back at the preceding fore side of described up-coiler.Equally, the open highway section LF here also is arranged in rear side mutually independently with machine, thereby can reform traditional up-coiler.The thread-carrier 62 of definite open highway section LF is arranged as adjustable, and can be installed into position 62 ', thereby special open highway section LF can be provided as required.This embodiment can also be used as bilateral, that is, as shown in Figure 9, the layout of top, employing machine top also can be presented to yarn axis 81 to second up-coiler from feedway 13.

Advantage of the present invention is tangible: except obvious raising draw speed, will form also that the roughness of yarn almost reduces by half in the zone at air ring.Obviously reduce broken yarn.Even can not use complicated yarn air sphere limiter.When improving yarn matter, productive output improves 30% to 40%.Especially under the situation of the yarn that tightly spins, because in these yarns, lower filoplume causes because of glide lamella causes the very risky of broken yarn, the present invention also proves effectively in this case.Under the situation of still inaccessible high draw speed greater than 1600m/min so far, described desirable spacing LF has special obvious effects.

Claims

1. recoil method of giving yarn axis, should on ring spinner, make to yarn axis, the described yarn axis of giving has in the top towards the gradually thin cone of mound bobbins, and, up described yarn is detached described bobbin, wherein, the yarn of respectively giving the recoil of yarn axis interconnected and reel and intersect bobbin to form, and, before entering the reeling position, pass thread-carrier from the described yarn of sending to yarn axis, this thread-carrier is arranged in described to the yarn axis place that is spaced a distance, it is characterized in that, at described upper limb and the described thread-carrier (6 of giving yarn axis (81), 61,62) between, the yarn above open highway section (LF) of 600mm of passing through, and, be not subjected to the guiding of any other type in this path the above yarn (Y).

2. method according to claim 1 is characterized in that, the length that described open highway section (LF) has is about 1000mm.

3. according to claim 1 or the described method of claim 2, it is characterized in that the length in the described open highway section (LF) between described thread-carrier (6) and described bobbin upper limb remains definite value.

4. according to claim 1 or the described method of claim 2, it is characterized in that described going up to yarn axis (81) to reeling and being at least 1: 2 to the coiling ratio of reeling down.

5. method according to claim 4 is characterized in that, described described coiling ratio to yarn axis (81) is 1: 4.

6. method according to claim 4 is characterized in that, describedly is less than 6 meters yarn for going up to reeling with down to being wound as, being wound with of yarn axis (81) cone.

7. method according to claim 6 is characterized in that described cone is wound with 4.5 meters yarn.

8. according to claim 1 or the described method of claim 2, it is characterized in that the described height of yarn axis (81) cone coiling of giving is more than 40mm.

9. method according to claim 8 is characterized in that, described coiling to yarn axis (81) cone highly is 60mm.

10. according to claim 1 or the described method of claim 2, it is characterized in that the described yarn axis (81) of giving is reeled under such yarn tension, this yarn tension makes the described hardness of yarn axis (81) of giving be at least 50 ° of Shore hardnesss.

11. method according to claim 10 is characterized in that, the described yarn axis (81) of giving is reeled under such yarn tension, and it is 60 ° of Shore hardnesss that this yarn tension makes described hardness to yarn axis (81).

12. up-coiler, be used to recoil the yarn axis of giving that on ring spinner, makes, the described yarn axis of giving has in the top towards the gradually thin cone of mound bobbins, and, up described yarn is detached described bobbin, wherein, the yarn that respectively will recoil to yarn axis is interconnected and is wound up on the intersection bobbin, thread-carrier is arranged in described to one segment distance place, yarn axis top, wherein passing described thread-carrier from described yarn to debatching on the yarn axis advances, it is characterized in that, with the open highway section (LF) more than the 600mm of interval, described thread-carrier (6) is arranged in the described upper limb top of giving yarn axis (81) mound bobbins, and, do not arrange other type thread-carrier that may contact with described yarn (Y) in this highway section.

13. up-coiler according to claim 12 is characterized in that, described thread-carrier is arranged in described yarn axis (81) bobbin upper limb top, the open highway section (LF) of about 1000mm at interval given.

14., it is characterized in that the described rear side of being arranged in described up-coiler for yarn axis (81) makes described open highway section (LF) diagonal manner extend to the front side through described up-coiler according to claim 12 or the described up-coiler of claim 13.

15., it is characterized in that described mode of hanging for yarn axis (81) with its top is arranged in place, described up-coiler top position according to claim 12 or the described up-coiler of claim 13 downwards.

16., it is characterized in that, be that two up-coilers are provided with a common bobbin feedway (13) according to claim 12 or the described up-coiler of claim 13.

17. according to claim 12 or the described up-coiler of claim 13, it is characterized in that, described yarn (Y) is by the deflection (α) of thread-carrier (61,62) experience more than 70 ° in the open highway section of restriction (LF), and described thread-carrier (61,62) is arranged as rotatable pulley.

18., it is characterized in that described open highway section (LF) is arranged in the rear side of described up-coiler according to claim 12 or the described up-coiler of claim 13.

19. up-coiler according to claim 17 is characterized in that, described pulley (61,62) is supported on the coro bearng, and, have the guiding groove (62) that is used for yarn (F).