CN103361786B - Before ring spinning, yarn is applied the method and device of false twisting - Google Patents
Before ring spinning, yarn is applied the method and device of false twisting Download PDFInfo
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- CN103361786B CN103361786B CN201310091686.5A CN201310091686A CN103361786B CN 103361786 B CN103361786 B CN 103361786B CN 201310091686 A CN201310091686 A CN 201310091686A CN 103361786 B CN103361786 B CN 103361786B
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- 238000007378 ring spinning Methods 0.000 title claims abstract description 22
- 239000000835 fiber Substances 0.000 claims description 19
- 238000009987 spinning Methods 0.000 claims description 12
- 230000002093 peripheral Effects 0.000 claims description 11
- 230000000875 corresponding Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 2
- 241000681094 Zingel asper Species 0.000 description 8
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- 238000005516 engineering process Methods 0.000 description 4
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- 230000001965 increased Effects 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 210000003491 Skin Anatomy 0.000 description 2
- 235000002723 Dioscorea alata Nutrition 0.000 description 1
- 235000007056 Dioscorea composita Nutrition 0.000 description 1
- 235000009723 Dioscorea convolvulacea Nutrition 0.000 description 1
- 235000005362 Dioscorea floribunda Nutrition 0.000 description 1
- 235000004868 Dioscorea macrostachya Nutrition 0.000 description 1
- 235000005361 Dioscorea nummularia Nutrition 0.000 description 1
- 235000005360 Dioscorea spiculiflora Nutrition 0.000 description 1
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- 235000006350 apichu Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing Effects 0.000 description 1
- 235000004879 dioscorea Nutrition 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
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- 239000002994 raw material Substances 0.000 description 1
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Abstract
The invention discloses a kind of method and device that before ring spinning, yarn is applied false twisting, and include a kind of ring spinner of this device.Downstream at roll gap, the yarn of tractive twisting makes it stride across the first and second operation portions of traveling endless-belt successively, so yarn holds first nonreentrant surface in the first operation portion, then passes through between the first and second operation portions before holding second nonreentrant surface in the second operation portion.Friction between each and yarn of the first and second nonreentrant surfaces applies false twisting on common direction.Have been found that and correspondingly keep difference can reduce yarn defect, especially tuberosity quantity between first and second linear velocities in the first and second operation portions.
Description
Technical field
The present invention relates to prepare yarn by ring spinning, and more particularly relate to just existing
The yarn transmitted from the roll gap of a pair anterior draw roll before being applied real twisting by ring spinning applies
The method and apparatus of false twisting.
Background technology
The feature of ring spinning is incomparable by the product of other spinning technique, and its productivity ratio can be more
Height, therefore it is the technology being unlikely replaced in a short time.Ring spinning technology is entered
Go substantial amounts of research, and the improvement of the appropriateness relatively being carried out ring spinner productivity ratio is for having made
It is very important for cotton mill with thousands of spindles.Many different raw materials and relevant to machine
Factor directly affects productivity ratio and quality, sometimes improves on the one hand some and inevitably results on the other hand
Compromise.Therefore the target that can assert spinning technique personnel is to seek between more high production rate and required quality
Seek optimum balance.
US3979894 describes a kind of five belts for making filament yarn deformation (texturing)
False-twisting device, this filament yarn has complete with chopped fiber ring spinning line in the continuous length of its long filament
The most different structures and characteristic, therefore its of course not ring spinning line.Additionally, in this outmoded false twisting
In device, filament yarn passes sequentially through the portion that runs parallel of five traveling endless-belts, by adjacent
The nonreentrant surface in each operation portion was held before between operation portion.Wherein three belts of above-mentioned five belts exist
One side is rotated up, and two other belt rotates in the reverse direction, and filament yarn is in a zigzag manner
By operation portion, the friction between each and the filament yarn in such five operation portions is on common direction
Apply false twisting.Above-mentioned belt matches and five belts are all advanced with identical speed, to avoid causing
The twist difference that modified continuous filament yarn qualities is poor and thread path is unstable.
Relative to ring spinning technology, US2010/0024376 describes the most relevant a kind of dress
Put, document teaching for just before ring spinning roll gap from a pair anterior draw roll transmitted
Yarn apply false twisting single belt method.Yarn from draw roll is generally transverse to and strides across successively
The first and second of the single belt portion that runs parallel is to carry out tractive, and it passes through the first operation portion, then exists
By passing through between above-mentioned operation portion before the second operation portion.First operation portion and the second operation portion and yarn
Friction between line applies false twisting.Two operation portions of belt move in the reverse direction, but two operation portions
Linear velocity identical.Compared with traditional ring spinning, under given productivity ratio, this single belt is false
Sth. made by twisting method is formed has the yarn of relatively low residual torque, its final fabric causing having more soft feel,
But also gratifying intensity is provided and reduces fluffing.The length of the extensible machine of single belt so that it is
Relative to using heat treatment to reduce the more cost effective input of alternative technologies of residual torque.So
And, it has been found that this single belt art causes yarn defect to be increased above common level, and yarn defect includes
Thick position, thin section position and the number of tuberosity.Sharply increasing by special concern of node number, because knot
Joint is likely due to what following process broken end was caused, and therefore they can not contaminate as remaining yarn
Color, thus affect the outward appearance of fabric.Therefore to obtain satisfied tuberosity amount necessarily make maintenance cost phase
To higher, in order to alleviate the known impact that can aggravate the machine factor (such as abrasion) that tuberosity is formed.Cause
This should be appreciated that the false twisting method for improving and device exist demand, and it can at least keep above-mentioned having
Profit performance, reduces tuberosity simultaneously in the ring spinning of short fiber yarn and is formed.One object of the present invention
It is to meet this demand, or is more generally to carry between drafting process and ring spinning process
Supply yarn applies a kind of improved method of false twisting.
Summary of the invention
According to an aspect of the present invention, it is provided that a kind of for leading from a pair front portion before ring spinning
Stretching the method that the short fiber yarn that the roll gap of roller transmitted applies false twisting, described method includes:
Tractive yarn makes it stride across the first and second operation portions of traveling endless-belt successively, such yarn from
Roll gap leaves and holds first nonreentrant surface in the first operation portion, then convex hold the second operation portion second
Pass through between the first and second operation portions before surface, thus each of the first and second nonreentrant surfaces and
Friction between yarn applies false twisting on common direction；And
Difference is correspondingly kept between first and second linear velocities in the first and second operation portions.
Test result indicate that, by by first and second operation portions keep at different speeds, when with list
When individual belt false twisting method is compared, it is possible to achieve the node number formed is greatly decreased.Should be appreciated that fortune
The direction in row portion can't change the difference between its linear velocity, and (therefore it is that the one of speed is with reference to mark
Amount), meanwhile, the corresponding sports direction of operation portion motion is preferably separated by 180 °, and certain two operation portions can
It is aligned to other angle relative to each other, but still on common direction, yarn is applied false twisting.Additionally, it is fast
Difference or the non-zero variance of degree are preferably constant, but it can also dynamically change.
Preferably, both the first and second operation portions are arranged essentially parallel to anterior draw roll, and tractive yarn
Line makes it cross the first and second operation portions, and when anterior draw roll rotates with constant speed, described
Difference is substantially constant.
Preferably, described first and second nonreentrant surfaces have an identical radius of curvature, and most preferably
The cross section of the first and second belts is circular.Can be formed identical between first and second nonreentrant surfaces and yarn
Or different cornerites.
Preferably, this difference makes the First Line speed ratio with the peripheral speed of anterior draw roll 0.4
Between 0.8, and the ratio of the peripheral speed of the second linear velocity and anterior draw roll is between 0.9 to 1.6.
Preferably, on the direction identical with false twisting common direction, yarn is added during ring spinning
Twist with the fingers.
Preferably, the first operation portion is arranged at the lower section of anterior draw roll, and the second operation portion is arranged at
The lower section in the first operation portion.Preferably, the first nonreentrant surface and two anterior draw roll are tangentially directed at.
On the other hand, the present invention includes for anterior from a pair before fibre bundle carries out ring spinning
The fibre bundle that the roll gap of draw roll is transmitted applies a kind of device of false twisting, and described device includes:
It is respectively provided with the first and second endless-belts of the first and second nonreentrant surfaces, the first and second annular skins
Each of band has corresponding linear operation portion, and linear operation portion is substantially parallel to each other so that line
Property operation portion can be parallel to anterior draw roll alignment；And
Driving means, it is for driving the first and second rings with corresponding first and second different speed
Shape belt.
Preferably, described driving means include controller, described controller be operatively connected for for
Controlling the speed of the first and second variable-speed motors, described first and second variable-speed motors operationally connect
Connect for use in correspondingly driving described first and second endless-belts.
The present invention provides a kind of method and apparatus, and it can effectively and efficiently operate with, thus its fall
Low joint number amount of finishing, and it has simple and modularized design generally, it reduces system to greatest extent
Standby cost and simplification maintenance.
Accompanying drawing explanation
The preferred form of the present invention will be described by way of example, wherein now by referring to accompanying drawing:
Fig. 1 shows the schematic cross section of spinning apparatus according to a first embodiment of the present invention；
Fig. 2 shows the amplification schematic cross section being similar to false twist belt device shown in Fig. 1, but its
Show geometry and the cornerite of a kind of replacement；
Fig. 3 is the perspective schematic view of spinning apparatus shown in Fig. 1；
Fig. 4 is the perspective schematic view of the single electric motor change type of spinning apparatus shown in Fig. 1；And
Fig. 5 shows the schematic cross section of spinning apparatus according to a second embodiment of the present invention.
Detailed description of the invention
Be suitable to machine that chopped fiber those fibers of 2 inches or about 50mm (length less than) is spinned
10a and 10b(is respectively shown in Fig. 1 and Fig. 5) in, the precursor of rove 11(yarn 13) sent
Enter in drafting system 12, in this place rove 11 is drawn into its final number.The example shown
Property drafting system 12 is with the horizontal 45° angle, and can include six roller double belt drafting systems.At gained
To fiber strip leave conveying roller or anterior roller 14a, after 14b, by two endless-belts advanced
Linear operation portion, the upper and lower 15a, 16a of 15,16 apply false twisting.In the reverse direction in false twisting
Thered is provided for giving the twist needed for intensity by batching assembly 25, batch assembly 25 and can also be used for pulling yarn
Line 13 strides across linear operation portion, upper and lower 15a, 16a.Batch assembly 25 and there is traditional structure,
And it is included in the reel 17 of high speed rotating on spindle.In this process, rings (traveller) 18 exists
Each rotation on spinning ring ingot 19 produces the twist in the yarn.Rings 18 is via being attached to its yarn
13 pull reel 17.
Drafting system 12 can be the double apron types of six rollers as depicted, and it includes three driven bottoms
Roller 14a, 20a, 21a, and upper roll 14b, 20b, 21b position thereon, and by lower rollers
The support of 14a, 20a, 21a is also pressed against lower rollers 14a, on 20a, 21a.Main drawing area is provided with leads
To unit, it includes bottom apron and top apron 22a, the 22b rotated.Rear portion roller 21a has predetermined
Rotary speed, and pinch rove 11.The draw rate of rove 11 is by the peripheral speed of rear portion roller 21a
Determine.In a similar fashion, apron roller 20a elongates rove 11.By making apron roller 20a be adopted
Draw rate more than the draw rate of rear portion roller 21a, the fiber of rove 11 slides against each other,
And form the fibre bundle than rove 11 thin (such as by the length making it have 1.5 to 2 times).With class
As mode, anterior roller 14a also elongates the fibre bundle sent into from apron roller 20a.Its draw rate is arranged
Become the draw rate more than apron roller 20a.Such as, by arranging draw rate leading than apron roller 20a
Fast 20 times of pulling rate degree, drawing-off will form the fibre bundle than the longest 20 times.
In the first embodiment of Fig. 1, fibre bundle is from anterior roller 14a, and the roll gap 27 between 14b leaves
And extend to the twist from belt 15,16 spread the point of (forming so-called spinning triangle shape).Then yarn
Line 13, by fixing tail optical fiber or yarn guide 23, then holds first nonreentrant surface of operation portion, top 15a,
Then logical between operation portion, upper and lower before holding second nonreentrant surface of operation portion, bottom 16a
Cross.Belt 15,16 can be the similar circular cross section with same diameter so that nonreentrant surface has
Identical radius of curvature.As shown in Figure 2, the first nonreentrant surface is in the centerline of operation portion, top 15a
Form cornerite 28a.Second nonreentrant surface forms cornerite 28b in the centerline of operation portion, bottom 16a.Bag
The angle of angle 28a, 28b can change between 16a at operation portion, upper and lower 15a and be suitable to shown
Geometry, wherein upper and lower operation portion 15a, 16a contact yarn 13 opposite sides and
In the reverse direction moves, and the angle of cornerite 28a, 28b is about 80 to 110 degree.Yarn 13 can with lead
Stretch that system 12 is the same to be extended with horizontal plane angulation with identical, at anterior roller 14a, 14b and upper
Pass through between operation portion of portion 15a, with anterior roller 14a, 14b and the nonreentrant surface phase of operation portion, top 15a
Cut.Yarn 13 before being delivered to batch assembly 25 can generally with from operation portion, bottom 16a to fixing tail
Fine or yarn guide 30 line passes through.Then yarn causes anti-due to the real twisting that spreads from rings 18
To twisting, form final yarn.
Fig. 3 illustrates that operation portion, upper and lower 15a, 16a are at relative paired belt pulley 31/31,32/32
Between by linear and extend in the way of being parallel to each other, paired belt pulley 31/31,32/32 is mounted in fortune
Rotate around vertical axes at the opposed end in row portion.Belt 15,16 can be used to drive belt pulley 31,
The speed-changing rotation motor-driven of 32, this speed-changing rotation motor can have corresponding inverter style
Speed control 35, the AC motor 33,34 of 36 or DC servo-motor or stepping motor are (not
Illustrate).This allows to drive belt 15,16 at different rates, in order at operation portion, upper and lower 15a,
Difference is kept between the linear velocity of 16a.15a, 16a preferably extend over the whole of machine to operation portion, upper and lower
Individual length (i.e. up to about 50m in heavy-duty machines), therefore can arrange extra in middle position
Back-up belt wheel or roller 39 and guider 40, in order to back-up belt 15, the weight of 16, and guarantee that it is just
Really alignment.
As shown in Figure 4, in a change type of first embodiment shown in Fig. 1-3, replace two not
Same motor, is provided for driving the single rotary electric of two belts 15,16 via wheel 42
Machine 133, described wheel 42 has the diameter portion 44 held by lower belt 16 and by top skin
With 15 small diameter portion 43 held.Except an end board (end stock) 144 wherein
Inside arrange outside other transmission, Electrical and Electronic element, motor 133 and wheel 42 can be set simultaneously,
Belt 15,16 can generally periphery along elongated rack component 45 be parallel to extend each other.With this side
Formula, part 43, the natural scale of 44 limits between the linear velocity of operation portion, upper and lower 15a, 16a
Difference.Idle pulley 31a provider on wheel 42 either side change upwards so that top and
15a, 16a move in the opposite direction operation portion, bottom.By moving in the opposite direction, with
And the opposite side of joint yarn, linear operation portion, upper and lower 15a, both 16a cooperate with jointly
False twisting is applied on direction.
As shown in Figure 5, in a second embodiment, linear operation portion, upper and lower 15a, 16a can
To be alternatively engaged in the same side of yarn 13, in this case, they are in a same direction
It is driven, to apply false twisting on common direction.As in the first embodiment, belt 15,
16 can be the similar circular cross section with same diameter so that nonreentrant surface has identical curvature half
Footpath.Additionally, belt can have the nonreentrant surface with different curvature radius with yarn contacts.First convex table
Face forms cornerite (about 5 °) at the central axis of operation portion, top 15a, and it is less than by the second nonreentrant surface
The cornerite (it is about 20 °) formed at the central axis of operation portion, bottom 16a.Yarn 13 can
From with the horizontal plane of drafting system 12 formed by 45° angle deflection, there is the cornerite than anterior roller 14a bigger
The cornerite of anterior roller 14b.
Test result indicate that shown in following table, with apply false twisting single belt method (as
Described in US2010/0024376) compare, by keeping difference to make the First Line of operation portion, top 15a
Speed is set to 0.5 with the ratio of the peripheral speed of anterior draw roll so that the second of operation portion, bottom 16a
Linear velocity is set to 1.0 with the ratio of the peripheral speed of anterior draw roll, it is achieved that with traditional ring spinning
(not having the false twisting stage in drawing-off with between batching) is compared the tuberosity level of formation and is reduced, and relatively low twist
Fracture strength is increased, and fluffing (S3) reduces, and the uniformity is essentially unaffected.
In each of the four groups of tests performed, spin the cotton yarn of different yarns number and to by three kinds
The different yarn properties obtained by Yarn spinning method is measured.The result of each of four groups of tests presents
In following table 1-4.
Method, device 1-tradition
First spin on traditional ring spinner, do not carry out false twisting.
The single belt of method, device 2-
In testing at second, identical traditional spinning machine is modified to include as at US2010/0024376
Described at drafting system 12 and the single belt false-twisting device that batches between assembly 25.By 4mm
Diameter and the speed of circular cross section belt formed by polyurethane are maintained at anterior roller 14a, the circle of 14b
The 50% of circular velocity.
Method, device 3 present invention
In testing at the 3rd, identical spinning machine is modified to include the first enforcement relative to Fig. 1-3
Arrange with double belt differentials as implied above described in example.Have employed 4mm diameter and formed by polyurethane
Two similar circular cross section belts.The First Line speed of operation portion, top 15a and anterior draw roll
The ratio of peripheral speed is maintained at 0.5, and second linear velocity of operation portion, bottom 16a and anterior drawing-off
The ratio of the peripheral speed of roller is maintained at 1.0.
The table 1-count of yarn is 40 and spindle rotating speed is 16000 revs/min
The table 2-count of yarn is 50 and spindle rotating speed is 16000 revs/min
The table 3-count of yarn is 80 and spindle rotating speed is 15000 revs/min
The table 4-count of yarn is 100 and spindle rotating speed is 15000 revs/min
Optimal difference between the speed in operation portion, upper and lower can be depending on handled yarn and understands
Different.Further experiment shows by keeping difference to make First Line speed and anterior draw roll
The ratio of peripheral speed is between 0.4 to 0.8, and the second linear velocity and the peripheral speed of anterior draw roll
Ratio can obtain with compared with yarn produced by single belt method between 0.9 to 1.6 favourable
Improve.
Although not expectability substantially reducing by the tuberosity quantity acquired by the present invention, and therefrom
Precise mechanism is unclear, it is believed that in the case of being not intended to be bound by theory, to transport than bottom
Speed relatively slow for row portion 16a drives the benefit of operation portion, top 15a to be dual.One of them factor
It is to reduce the twist to spread towards roll gap 27, above-mentioned reduces the chance that the fiber end being highlighted holds,
Because the relative motion of surface fiber and core part fiber is less.Second factor is to reduce in operation portion, top
The ability of backtwisting after 15a, in order to reduce the probability grinding off loose fiber from yam surface.It is believed that this
The combination of a little factors causes tuberosity and substantially reduces.
Between belt 15,16 and yarn 13, the frictional force of interface realizes false twisting action, so impact
The factor alterable of these frictional force is to allow to make us the yarn applying of different materials and the count of yarn
Satisfied false twisting.The principal element of impact friction is yarn tension, strapping and surface smoothness.Logical
Cross by the belt pulley moved axially along vertical axes to support operation portion, upper and lower 15a, 16a, can hold
Change places between regulation operation portion and top operation portion 15a and draw roll 14a, the interval between 14b,
To change cornerite, and therefore change yarn tension.Coefficient of friction between belt 15,16 and yarn 13
Gratifying between 0.5 and 0.8, and this can easily by commercially available by polyurethane, poly-
Enhancing belt or non-reinforcing belt that ethylene, synthetic rubber and polyester or the like are made realize.
Compared with the yarn not carrying out false twisting made by traditional ring spinning yarn, the method for the present invention permits
Perhaps yarn is spun into and has similar yarn defect level, especially tuberosity level, but has higher toughness,
Less fluffing and relatively low level of twist.Can be prepared by these yarns and there is soft feel and smooth surface
High-quality fabric.The present invention other advantages is that two belts 15,16 can be economical in longer machine
Ground is installed and keeps.Separately installed and tensioning belt is provided to make device be not easily susceptible to the most adversely shadow
Ring the impact of the belt tension change in two operation portions.Minimizing due to tuberosity quantity, it is contemplated that can reduce
Broken end frequency in following process.
By the way of example, only describe each aspect of the present invention, and should be appreciated that without departing from this
It can be modified and supplement in the case of bright scope.
Claims (10)
1. one kind is used for the staple yarn transmitted the roll gap from a pair anterior draw roll before RING SPINNING
Line applies the method for false twisting, and described method includes:
Tractive yarn makes it stride across the first operation portion of traveling endless-belt and the second operation portion successively, so that
Obtain yarn and leave and hold first nonreentrant surface in the first operation portion from roll gap, then hold the second operation portion
The second nonreentrant surface before pass through between the first operation portion and the second operation portion, thus the first nonreentrant surface and
Frictional force between each and yarn of the second nonreentrant surface applies false twisting to yarn on common direction；With
And
Keep described first operation portion and the second operation portion in the first the most different linear speed and
Bilinear speed.
Method the most according to claim 1, wherein said first operation portion and the second operation portion are substantially
On be parallel to described anterior draw roll, and yarn is pulled so that it crosses the first operation portion and the second fortune
Row portion, and also including: when described anterior draw roll rotates with constant speed, in the first operation portion and
The difference of somewhat constant is kept between first linear speed and second linear speed in the second operation portion.
Method the most according to claim 1, wherein said first nonreentrant surface and the second nonreentrant surface have
Identical radius of curvature.
Method the most according to claim 3, the cross section of wherein said endless-belt is circular.
Method the most according to claim 1, wherein the first operation portion and the First Line in the second operation portion
Difference between property speed and the second linear speed is kept so that described first linear speed is with described
The ratio of the peripheral speed of anterior draw roll is between 0.4 to 0.8, and described second linear speed and institute
State the ratio of peripheral speed of anterior draw roll between 0.9 to 1.6.
Method the most according to claim 1, is included in after yarn is applied false twisting and yarn is carried out ring
Ingot spinning, and during ring spinning, in the phase applied with the first operation portion and the second operation portion
To Yarn twisting on the direction that the described common direction of the false twisting answered is identical.
Method the most according to claim 1, wherein said first operation portion is arranged at described front portion and leads
Stretch the lower section of roller, and described second operation portion is arranged at the lower section in described first operation portion.
8. one kind for before fibre bundle is carried out ring spinning from the roll gap institute of a pair anterior draw roll
The fibre bundle transmitted applies the device of false twisting, and described device includes:
It is respectively provided with the first nonreentrant surface and the first annular belt of the second nonreentrant surface and the second endless-belt, institute
State each of first annular belt and the second endless-belt and there is corresponding linear operation portion, described linearly
Operation portion is substantially parallel to each other so that described linear operation portion is parallel to described anterior draw roll pair
Accurate；And
Driving means, it is for driving first annular with the most different First Speed and second speed
Belt and the second endless-belt.
Device the most according to claim 8, wherein said driving means includes controller, described control
Device processed is operably connected to the speed for controlling the first variable-speed motor and the second variable-speed motor
Speed, described first variable-speed motor and the second variable-speed motor are operably connected to for correspondingly driving
Dynamic described first annular belt and the second endless-belt.
10. a ring spinner, it includes device according to claim 8, the setting of described device
In drafting system with batch between assembly.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261616198P | 2012-03-27 | 2012-03-27 | |
| US61/616,198 | 2012-03-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103361786A CN103361786A (en) | 2013-10-23 |
| CN103361786B true CN103361786B (en) | 2016-11-30 |
Family
ID=
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3045416A (en) * | 1958-09-15 | 1962-07-24 | Ubbelohde Leo | False twisting device |
| GB2031031A (en) * | 1978-09-27 | 1980-04-16 | Oda Gosen Kogyo Kk | Friction false twisting |
| FR2552115A1 (en) * | 1983-09-20 | 1985-03-22 | Asa Sa | DEVICE FOR COMMUNICATING FALSE TORSION BY FRICTION TO AT LEAST ONE MOVING WIRE |
| CN1212737A (en) * | 1996-02-29 | 1999-03-31 | 联邦科学和工业研究组织 | Reducing end breaks in spinning or twisting of yarn |
| CN1804170A (en) * | 2005-01-14 | 2006-07-19 | 香港理工大学 | Method and apparatus for machining single ring spun yarn |
| CN101643948A (en) * | 2008-08-04 | 2010-02-10 | 香港理工大学 | Method and apparatus for manufacturing slalom false twisting on ring yarn |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3045416A (en) * | 1958-09-15 | 1962-07-24 | Ubbelohde Leo | False twisting device |
| GB2031031A (en) * | 1978-09-27 | 1980-04-16 | Oda Gosen Kogyo Kk | Friction false twisting |
| FR2552115A1 (en) * | 1983-09-20 | 1985-03-22 | Asa Sa | DEVICE FOR COMMUNICATING FALSE TORSION BY FRICTION TO AT LEAST ONE MOVING WIRE |
| CN1212737A (en) * | 1996-02-29 | 1999-03-31 | 联邦科学和工业研究组织 | Reducing end breaks in spinning or twisting of yarn |
| CN1804170A (en) * | 2005-01-14 | 2006-07-19 | 香港理工大学 | Method and apparatus for machining single ring spun yarn |
| CN101643948A (en) * | 2008-08-04 | 2010-02-10 | 香港理工大学 | Method and apparatus for manufacturing slalom false twisting on ring yarn |
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