CN103866439A

CN103866439A - Air spinning machine

Info

Publication number: CN103866439A
Application number: CN201310757014.3A
Authority: CN
Inventors: T·维德; C·赛沙伊尔; R·维尔纳
Original assignee: Saurer Germany GmbH and Co KG
Current assignee: Saurer Spinning Solutions GmbH and Co KG
Priority date: 2012-12-07
Filing date: 2013-12-05
Publication date: 2014-06-18
Also published as: CN109972246A; EP2740821B1; JP6207369B2; EP2740821A1; DE102012023985A1; JP2014114535A

Abstract

The invention relates to an air spinning machine for producing yarn. The air spinning device has a fiber belt (4) which is stretched by a stretching unit (5) and is supplied to an air spinning equipment (6) for generating a yarn twist, where the fiber belt is withdrawn from the air spinning equipment and is wound onto a cross-wound bobbin. A false twisting unit (41) is arranged in a pre-drafting zone of the stretching unit. The false twisting unit is granted with alternating direction of rotation of the fiber belt, before it is moved in the main drafting zone on yarn count and is supplied to the air spinning equipment.

Description

Open end spinning apparatus

Technical field

The present invention relates to a kind of open end spinning apparatus of producing yarn, in open end spinning apparatus, utilize drafting system drawing-off sliver, afterwards sliver is flowed to open-end spinning unit to produce Yarn twisting, from open-end spinning unit, described sliver is extracted out and is wound up into cross winding bobbin.

Background technology

The for example ring spinning of traditional weaving techniques of setting up on market, closely and rotor spinning nearly all reached the specific limit of method about its production capacity.The mechanical component that configures the twist in spinning process originally by using air to be used for should be cancelled especially, and alternatively uses pneumatic means.

For open-end spinning, at total draft, higher and speed of production is faster in situation, and sliver is drafted to final fiber number in drafting system.The sliver spilling between the delivery roller of drafting system enters the feeding mouth of hollow Yarn-spinning spindle by spinning head.In the time that sliver enters Yarn-spinning spindle, free yarn end utilizes circulating current to be wound around the taper spindle head of Yarn-spinning spindle and the so-called cored fiber of spiral wound during yarn is drawn in to spindle.Cored fiber forms new yarn together with so-called envelope fiber, and this new yarn by unwinding, it is monitored by yarn clearer, is cleaned if desired and winds up.

In order to produce the yarn of high-quality, air-flow weaving, in open-end spinning unit front, drafting system is directly installed and is there is special significance.Can obtain attenuating and further parallel spun yarn at this.Object is to produce the uniform sliver of trying one's best, to can weave out thus the uniform yarn of trying one's best.

In drafting system, be typically provided with multiple tandem rollers pair.Each roller is to comprising bottom roll and upper pressure roller.Sliver by roller to being fed to open-end spinning unit.Because the right peripheral speed of roller increases along yarn direct of travel, so there is so-called drawing-off.Observe along yarn direct of travel, two last rollers are to forming main drawing area; Part before forms preliminary draft district.Conventionally drafting system is furnished with one or two preliminary draft district, their corresponding three roller drafting devices drafting device with four rollers in other words that is described to.

At drafting system rear,, there is again mass change in no longer balance of the mass change in sliver in yarn.In addition, seldom bring negative effect to drafting process, the air-flow for example occurring due to the rotary speed of drafting system delivery roller makes the independent fiber to depart from sliver, and part even departs from sliver, thereby has affected yarn qualities.The situation of this deterioration and the raising of spinning speed disproportionately increase.

DE10 2,005 022 186 A1 have described a kind of method of producing air-flow textile yarn, wherein, and by the flier roving food drafting system having compared with low twist.Additionally, can also configure slight false twisting by the specific set-up mode in main drawing area by the drafting system delivery roller of flier rove.

DE195 26 048 A1 disclose a kind of spinning machine, wherein, are provided with the false twisting mechanism that comprises two hollow rollers along yarn direct of travel at spinning unit rear.At this, give the yarn configuration twist that has completed spinning, the scared degree of should weaving out is thus lower, tight and uniform spun yarn.

DE20 42 387 A1 have illustrated a kind of apparatus and method of producing short fiber yarn, and short fiber yarn has twist structure by overall cross section.Flier roving-drafting, to final yarns fiber number, utilizes twisting mechanism to implement unified and continuous twist configuration.Be characterised in that, the twist is configured in negative draw zone and implements herein, and negative draw zone is arranged on the rear of the known drafting system only with positive drawing-off along yarn direct of travel.Made yarn has " Corkscrew twist " according to typical method; The appearance after the configuration twist of this phenomenon, this is because of some spun yarn group backtwistings in the time of other twist contractions.In order to eliminate this situation, follow-uply will carry out another so-called first break draft process.

EP1 853 755 B1 disclose a kind of without flier spinning method and a kind of device with drafting system, so that it is very thin until be less than the very very thin yarn of 10tex not use flier to produce.Utilize the first drafting system being conventionally located in spinning preparatory process to produce the thin tulle bar that is less than 2.5ktex.Be that every meter five of sliver configuration is twisted with the fingers or the protection of more twists is twisted with the fingers according to this invention, thereby stop in conveying and continue, between processing period, in the time sliver being drawn in to the second drafting system or open-end spinning unit, to occur misdraft.

Be proved and there is following shortcoming according to the apparatus and method of prior art:

DE10 2,005 022 186 A1 have described a kind of delivery roller set-up mode each other, and wherein, delivery roller is fast especially to wearing and tearing.In addition can only configure the unified twist by this setup.Not only according to DE195 26 048A1, and according to DE20 42 387 A1 all in drawing-off of sliver to final yarns fiber number, just implement twist configuration.Solve unsatisfactorily thus fiber and depart from the problem that departs from sliver with part.

Summary of the invention

Task of the present invention is to recommend a kind of device, and it is especially down to minimum level by the air-flow forming based on drafting system delivery roller by the fiber deflection of appearance.

According to a first aspect of the invention, in the preliminary draft district of described drafting system, be provided with false twisting mechanism, described false twisting mechanism is according to the twist direction configuration sliver twist replacing, and afterwards, described sliver is drafted to denier count as received and be fed to described open-end spinning unit in main drawing area.Progressively obtain being fed to main drawing area and cause required improved twisting by continuous replacing twist direction.Make sliver compacter by this twisting, limit yarn is also in company with in the middle of entering.Stop thus independent fiber before the right clamping gap of delivery roller, to depart from sliver by air-flow.Therefore improved the uniformity of yarn.

According to a second aspect of the invention, according to favourable mode, the described drafting system that is positioned at described spinning unit front is drafting device with four rollers.The draw zone that drafting system has is more, and the desired uniformity of yarn and parallel position are just more accurate.By this way, sliver is also graded drawing-off.

According to a third aspect of the invention we, false twisting mechanism is arranged in the second preliminary draft district.The advantage of this setup is, sliver attenuates by the first preliminary draft district, thereby can apply more twisting, and these twisting are only limited to the powerful drawing-off that does not hinder main drawing area.Obtain object of the present invention by a small amount of twisting, that is, can " catch " limit yarn.

According to a forth aspect of the invention, preferred described false twisting mechanism is scroll tube.Scroll tube is constantly changed to twist smoothly with the mode of backhand twisting around its longitudinal axis, like this twisting replacing is passed to sliver.

According to a fifth aspect of the invention, false twisting mechanism be can pneumatic actuation nozzle.By relative set mode and apply air to the air nozzle in through channel also for sliver configures around the twisting replacing of its longitudinal axis, wherein avoided the parts of mechanical motion.

The present invention is not limited to specific twisting mechanism.

Brief description of the drawings

Below in conjunction with station explanation the present invention of schematically illustrated open-end spinning frame.

In figure:

Fig. 1 is the front view that the weaving loom of open end spinning apparatus is housed;

Fig. 2 is the spinning apparatus of the spinning position of the open-end spinning frame of broken section and obvious Fig. 1 illustrating simplifiedly.

Detailed description of the invention

The front view of the schematically illustrated open-end spinning frame 1 of Fig. 1.This weaving loom has multiple stations that are arranged side by side or spinning position 2, and they are positioned between the so-called

end frame

15,16 that is arranged at end side.

As further illustrated in Figure 1, each station 2 is all equipped with feeds to material, for example, leave the sliver 4 in spinning bucket 3 in.

In addition, each station 2 also has drafting system 5, open end spinning apparatus 6, yarns take-off device 7, yarn clearer 8 and coiler device.

Supporting Yarn lateral-movement device 9 is for being wound up into doff bobbin 11 by the yarn of being made up of sliver 4 at open-end spinning unit 6 10 with cross one another layer.

This doff bobbin in other words cross winding bobbin 11 remains on unshowned bobbin cradle and by same unshowned bobbin driver rotation conventionally.

As further illustrated in Figure 1, the station 2 of weaving loom 1 is preferably supplied with by the operation unit 12 of utonomous working, and operation unit 12 can move along station 2 in the mode of guiding on guide rail 13,14.

Fig. 2 illustrates drafting system 5, and is located at the path of open-end spinning unit 6 and the sliver 4 in downstream.The sliver 4 extracting from spinning bucket 3 is fed has given the top roller right as feed roller and

bottom roll

31,32, utilizes top roller and

bottom roll

33,34; 35,36; 39,40 carry out drawing-off.

Top roller and bottom roll 35,36 and

apron

37,38 collaborative works.Top roller and

bottom roll

39,40 are as delivery roller.According to the present invention, be provided with false twisting mechanism 41 at top roller and

bottom roll

33,34 rears.

Input at spinning unit 6 is provided with spray nozzle device 42.Nozzle 43,44 is connected with compressed air source 46 by pipeline 45.The air flowing out from

nozzle

43,44 generates eddy current, utilizes eddy current to drive the sliver 4 of drawing-off.Hollow spinning cone 47 is connected on nozzle 43,44.The yarn 10 being formed by

spray nozzle device

42 and 47 collaborative works of spinning cone is extracted out from spinning unit 6 by hollow spinning cone 47.Utilize another pipeline 49 to be connected with negative pressure source 50 around the air chamber 48 of spinning cone 47.Utilize the details of the spinning process of this spinning apparatus for example can be with reference to DE19926492A1.

Sliver 4 by roller to 31,32; 33,34; 35,36; 39,40 be transported to open-end spinning unit, wherein, the right peripheral speed of roller increases along yarn direct of travel.In the first preliminary draft district 51, drafted maximum 4 times of sliver 2.In the second preliminary draft district 52, sliver 4 is by further drawing-off and also obtain alternating twisting by false twisting mechanism 41.In main drawing area 53, sliver 4 obtains its final fiber number, and final fiber number is equivalent to denier count as received.The air-flow generating towards wedge shape part 54 as top roller and the

bottom roll

39,40 of delivery roller.Air-flow can be without the bite between top roller and

bottom roll

39,40, thereby towards top roller and

bottom roll

39,40 1 side flow.

According to the present invention, enter main drawing area 53, the sliver 4 of preliminary draft has alternating twist.Keep thus spun yarn-spun yarn-adhesion and and then same in sliver 4, keep enough large pulling force, to the quantity of the fiber that is blowed to top roller and

bottom roll

39,40 1 sides by air is kept seldom.Thus these fibers are flowed to spinning process equally, form the lower and uniformity of scared degree and be able to the yarn of improved, high-quality air-flow weaving.

Claims

1. produce the open end spinning apparatus of yarn for one kind, in described open end spinning apparatus, utilize drafting system drawing-off sliver, afterwards described sliver is flowed to open-end spinning unit to produce Yarn twisting, from described open-end spinning unit, described sliver is extracted out and is wound up into cross winding bobbin

It is characterized in that,

In the preliminary draft district of described drafting system, be provided with false twisting mechanism, described false twisting mechanism is according to the twist direction configuration sliver twist replacing, and afterwards, described sliver is drafted to denier count as received and be supplied to described open-end spinning unit in main drawing area.

2. open end spinning apparatus according to claim 1, is characterized in that, the described drafting system that is positioned at described spinning unit front is drafting device with four rollers.

3. open end spinning apparatus according to claim 2, is characterized in that, described false twisting mechanism is arranged in the second preliminary draft district.

4. open end spinning apparatus according to claim 3, is characterized in that, described false twisting mechanism is scroll tube.

5. open end spinning apparatus according to claim 3, is characterized in that, described false twisting mechanism be can pneumatic actuation nozzle.