CN105040193B

CN105040193B - A kind of asynchronous input of double slivers and the revolving cup spinning method and device of three fractions comb

Info

Publication number: CN105040193B
Application number: CN201510516137.7A
Authority: CN
Inventors: 薛元; 高卫东; 杨瑞华; 郭明瑞
Original assignee: Jiangnan University
Current assignee: Jiangnan University
Priority date: 2015-08-21
Filing date: 2015-08-21
Publication date: 2018-02-16
Anticipated expiration: 2035-08-21
Also published as: WO2017031613A1; EP3327186A4; EP3327186B1; CN105040193A; EP3327186A1

Abstract

A kind of device of more fraction comb rotor spinning methods, including spinning unit and computerized control system, spinning unit includes being fed for carding agencies, cohesion twisting mechanism, coiling and molding mechanism, it is characterized in that being fed for carding agencies includes combined type feed roll motor, the multistage combing roller of two revolution frees degree, the speed ratio of two rollers of the combined type feed roll motor of two described revolution frees degree is adjustable, realizes the line density and blending ratio of randomly regulating revolving cup spun yarn.

Description

A kind of asynchronous input of double slivers and the revolving cup spinning method and device of three fractions comb

Technical field

The invention belongs to the rotor spinning field of textile industry

Background technology

The general principle of revolving cup spun yarn is：Sliver is by gripping of the horn mouth through feed plate and feed roll motor, feed roll motor Rotational conveyance sliver delivers to Fen Shu areas；The combing roller that Fen Shu areas rotate at a high speed carries out shredding to sliver and strips, comb separation, be mixed Close, so that it becomes being separated from each other, single fiber arranged in parallel and entering cotton-conveying pipe；Under airflow function, fiber is flowed through by defeated Cotton passage enters revolving cup, under the centrifugal action of high speed rotation cup, fiber further superposition mixing in collection surface, by mother Yarn is drawn and forms yarn after the twisting of resistance twist device.

Patent " a kind of Revolving cup spinning colour mixture resultant yarn method and device and product " (application number CN201410190891.1) and " one Kind of Revolving cup spinning colour mixture is into yarn feeding device " (CN201420229715.X) by controlling feed roller speed, with the feeding of continuous constant or Person is segmented the ripe bar that variable feeds two or more than two, becomes blending ratio and is formed with the mixing of monochromatic or colorful fiber, with reality Show yarn density constant and adjust the effect of blending ratio.But the invention has two：First, simply general in invention It is proposed to realize the constant colour mixture of line density and the color spinning of section by coupling drawing-off in thought, do not provide coupling drawing-off and realize line density How mixing when colour mixture ratio is changed under conditions of constant.Meanwhile specific embodiment and embodiment are not provided.Second, should Patent application still uses traditional single combing roller, and when three slivers are fed simultaneously, original point of comb drafting system can not fill Divide ground to complete to strip, comb, mix and decompose drawing-off to more slivers, fibre bundle thus can be caused to decompose insufficient, cause to block up Combing roller and stall cup situation occur, and spinning easily occurs breaking end and the defects of slubbing, cotton knot.Meanwhile couple each cotton of feeding Although bar constant total quantity, each sliver feed quantity has differences, and does not cause the chance of fiber empir-ical formulation also not compared with Duan Fenshu areas It is more, therefore cause color blending effect undesirable.

Can realize blending ratio constant in Revolving cup spinning at present and line density change mainly have patent " Rotor Spinning Slubby Yarn Method and spinning apparatus " (grant number CN00137211.4), its principle is asynchronous machine and stepper motor, through differentiator, silk Bar and worm gear, feed roller is driven, following operation is performed under intelligent controller control by stepper motor：From reducing to low at a high speed Speed；Continuous service is for a period of time；Accelerate at a high speed；For a period of time, revolving cup spins one section of slub to continuous service.The patent can be with Production becomes the yarn of line density, but can not change yarn ratio.

Production line density and the yarn that changes of blending ratio are, it is necessary to which two of feeding or more than two rove can exist respectively The respective feed quantity of line traffic control, and total rove feed quantity is also obtained while each rove feed quantity is changed respectively To control, patent there is no to realize the production of this yarn at present.Line density and the indeclinable yarn of blending ratio are produced, is mainly asked Topic is, it is impossible to realizes that two or more fibers carry out blending with arbitrary proportion in Revolving cup spinning spinning process.

The content of the invention

In order to solve the above problems, the present invention is improved traditional rotor spinning machine in mechanism.A kind of three fractions The device of comb and the rotor spinning method of more components feeding, including spinning unit and computerized control system, spinning unit include feeding To carding agencies, cohesion twisting mechanism, coiling and molding mechanism, it is characterised in that being fed for carding agencies includes three-level combing roller and two The combined type feed roll motor of the individual revolution free degree, two rollers of the combined type feed roll motor of described two revolution frees degree Speed ratio is adjustable.The cohesion twisting mechanism includes cotton-conveying pipe, revolving cup and yarn withdrawal device；Coiling and molding mechanism includes drawing yarn reel Around mechanism.Described computerized control system includes PLC, servo-driver, servomotor, and described two are returned Turn the combined type feed roll motor of the free degree, three-level combing roller is driven by servomotor.The combined type of the described revolution free degree is given Cotton roller includes axle, bearing, hollow shaft, first gear, second gear, packing ring, the first movable roller, the second movable roller, institute State first gear, second gear, the first movable roller, the second movable roller to rotate around same axis, first gear driving the One movable roller, second gear drive the second movable roller.Described three-level combing roller by the first combing roller, the second combing roller and 3rd combing roller composition arranged in parallel.The rotating speed of described three-level combing roller is incremented by step by step, and the rotating speed of the first combing roller is 1500- 3000rpm, the rotating speed of the second combing roller is 3000-6000rpm, and the rotating speed of the 3rd combing roller is 6000-12000rpm., it is described The card wire density of three-level combing roller increases step by step.

It is a further object to provide it is a kind of using said apparatus carry out rotor spinning method, including to cotton, Point comb, cohesion twisting, draw yarn reel around, it is characterised in that：The combined type feed roll motor to cotton using two revolution frees degree Asynchronous feeding Fen Shu areas, described point of comb use three-level combing roller.

, can be by two slivers (or two kinds of different materials by the combined roller and three combing rollers of present invention configuration design Strip or two kinds of colors strip, the lower component of abbreviation two), combined formula feed roll motor non-synchronously feeds Revolving cup spinning point comb Two slivers are progressively decomposed into beam fibre by area, shredding step by step, combing, orientation, mixing and decomposition drawing-off through three-level combing roller Tie up and be further broken into single fiber.In the presence of centrifugal force and air-flow, disengaging and the continuous list shifted from combing roller Fiber stream enters the cup of rotation at a high speed.Fiber stream is condensed into yarn again under revolving cup centrifugal action, then is twisted through resistance twist device, Exported by delivery roller and form Rotor yarn.In spinning process, servo drive system is controlled by computer program, makes to have Two slivers are non-synchronously fed Fen Shu areas by the feed roll motor of two frees degree respectively, pass through feeding for two feed roll motors of regulation and control Enter amount and feeding ratio, it is possible to the line density of the final resultant yarn of the dynamic configuration Revolving cup spinning and the blending ratio of two components, produce bamboo Save yarn, section coloured yarn, section color bunchy yarn, with dyed yarn.

The rotating speed of first combing roller is relatively low, fine in each sliver when can so ensure that more sliver feed quantities differ greatly The carding times total amount by combing roller is tieed up all in rational scope, reduces the damage of fiber；The rotating speed of second combing roller is high In the first combing roller, by the combing of the second combing roller, the machine-direction oriented of fiber is optimized, and horizontal transfer mixing is further excellent Change；3rd combing roller is high speed combing roller, and fiber not only obtains preferably combing by the 3rd combing roller and transfer, and speed Get a promotion, arrive into the centrifugal force requirement of cotton carding passage, smoothly orderly can enter revolving cup resultant yarn.Pass through above-mentioned multistage Strip, shredding, removal of impurities, point comb drawing-off, transfer, smoothly complete and sliver resolved into web, web is further decomposed into bundle fiber, beam is fine Dimension is resolving into the super draft function of single fiber, improves the function in Revolving cup spinning Fen Shu areas, has flexible, efficient, high yield Effect.

(2) patent of the present invention constructs corresponding spinning mathematical modeling and program and calculated on the basis of mechanical creative design Method, by the servo-control system of electromechanical integration, realize the line density and blending ratio of randomly regulating revolving cup spun yarn.Having In the embodiment of body, the spinning of following four kinds of yarns has been carried out：

1. line density is constant and the yarn of blending ratio change, such as there is gradual change color or be segmented the line density section coloured silk of color Yarn；

2. blending ratio is constant and the yarn of line density change, such as slub, tufted yarn, a point point yarn；

3. the yarn that line density and blending ratio change, such as section color bunchy yarn, section coloured silk tufted yarn, Duan Caidian point yarns；

4. line density and blending ratio do not change, but with the mixed yarn of arbitrary proportion mixture or mixture dyed yarn.

Brief description of the drawings

Fig. 1：Rotor spinning flow chart

Fig. 2：Three combing roller Revolving cup spinning rove comb and are drawn through procedure chart

Fig. 3：Feed roll motor is driven schematic diagram, and 3b is 3a right view

Fig. 4：Combined type feed roll motor structure chart

Fig. 5：The asynchronous two level drawing-off spinning control system figure of two-component

Fig. 6：The asynchronous input revolving cup spun yarn system control model figure of two-component

1-1,1-2,1-3- combing roller, 1-4,1-5- impurity discharging ports, 1-6- feed roll motors, 1-7- slivers, 1-8- pressurization shell fragments, 1-9- feed plates, 1-10- cotton-conveying pipes, 1-11- resistance twist devices, 1-12- revolving cups, 1-13- aspirating holes, 1-14,1-15- draw leno Draw, 1-16- yarns

2-1,2-2- feed roll motor, 2-3,2-4- slivers, 2-5- feed plates, 2-6,2-7,2-8- combing rollers, 2-9- fibers Stream, 2-10- revolving cups, 2-11- yarns

3a-1,3a-4- roller, 3a-2,3a-7- gears, 3a-3,3a-5- carrier gears, 3a-6- roller shafts, 3a-8,3a- 9,3a-10- combing rollers, 3a-11- spun yarns；3b-1- gears, 3b-2- rollers, 3b-3- gears, 3b-4- gears.

4-1- bearings, 4-2- hollow shafts, 4-3- gears, 4-4- packing rings, 4-5- rollers, 4-6- rollers, 4-7- gears, 4-8- Axle.Two movable rollers of 4-5,4-6 are driven by gear 4-3 and gear 4-7 respectively.

Embodiment

Spinning Process Design：

V₀₁：The linear velocity of feed roll motor 1；V₀₂：The linear velocity of feed roll motor 2；V₁：The linear velocity of combing roller 1；

V₂：The linear velocity of combing roller 2；V₃：The linear velocity of combing roller 3；V₄：Revolving cup linear velocity；V₅：Delivery roller linear velocity；

ρ₁：：Sliver A line density (grammes per square metre/rice)；

ρ₂：Sliver B line density (grammes per square metre/rice)；

ρ：Into thread density (grammes per square metre/rice)；

ρ₁₁：Sliver A passes through the line density (grammes per square metre/rice) of combing roller 1；

ρ₁₂：Sliver A passes through the line density (grammes per square metre/rice) of combing roller 2；

ρ₁₃：Sliver A passes through the line density (grammes per square metre/rice) of combing roller 3；

ρ₁₄：Line densities (grammes per square metre/rice) of the sliver A in revolving cup,

ρ₂₁：Sliver B passes through the line density (grammes per square metre/rice) of combing roller 1；

ρ₂₂：Sliver B passes through the line density (grammes per square metre/rice) of combing roller 2；

ρ₂₃：Sliver B passes through the line density (grammes per square metre/rice) of combing roller 3；

ρ₂₄：Line densities (grammes per square metre/rice) of the sliver B in revolving cup,

E₁：Combing roller 1 relative to feed roll motor draw ratio；

E₂：Combing roller 2 relative to combing roller 1 draw ratio；

E₃：Combing roller 3 relative to combing roller 2 draw ratio；

E₄：Revolving cup relative to combing roller 3 draw ratio；

E₅：Delivery roller relative to revolving cup draw ratio；

E：Revolving cup spinning total stretch ratio, the draw ratio equal to delivery roller relative to feed roll motor.

Subscript 1,2 represents component A, component B respectively.

(1) the design of three combing roller carding technologies：

When being fed for more slivers, in the case that feed roller feeding speed difference is larger, when each component fiber grips Between differ larger, in single combing roller Revolving cup spinning, due to needing to balance exploitation/carded fiber, and when being transferred to cotton carding passage Requirement to fiber speed, the rotating speed of single combing roller is very high, when such sliver feed quantity difference is big, fiber in two slivers The carding times being subject to differ greatly, and the fibre damage more than carding times is excessive.

Three combing rollers are used to fibre damage and the mixed uniformly problem of fiber stream, this patent in order to solve combing roller rotating speed Form, i.e. the 1st combing roller, the 2nd combing roller and the 3rd combing roller.The rotating speed (ω=1500-3000rpm) of first combing roller is relatively low, Card wire density is relatively low, card wire operating angle is relatively small, to strip, shredding, removal of impurities and point comb based on, emphasis make each sliver by The carding times arrived reduce the damage of fiber in rational scope；The rotating speed (ω=3000-6000rpm) of second combing roller, with Strip, based on point comb drawing-off and fibre migration, card wire density is more than the first combing roller card wire density, and card wire operating angle is also relative to be omited Greatly, optimized by the combing of the second combing roller, the machine-direction oriented of fiber, horizontal transfer is mixed into one-step optimization；3rd point It is high speed combing roller (ω=6000-12000rpm) to comb roller, and to strip, based on point comb drawing-off and fibre migration, card wire density is big In the second combing roller card wire density, card wire operating angle is maximum, and fiber not only obtains preferably combing and turning by the 3rd combing roller Move, and running at high speed due to the 3rd combing roller, under air-flow and centrifugal action, high separation and continuous fiber stream is suitable Gesture enters to aligned orderly revolving cup cohesion resultant yarn by cotton-conveying pipe.

Stripped by the multistage of three combing rollers, shredding, removal of impurities, point comb drawing-off, transfer, smoothly complete and sliver resolved into cotton Net, web are further decomposed into bundle fiber, bundle fiber is resolving into the super draft function of single fiber, improve Revolving cup spinning Fen Shu areas Function, the rotor spinning of the more asynchronous feedings of sliver is met to a point particular/special requirement for comb, realizes flexible, efficient point of comb work( Energy.

(2) revolving cup spun yarn drafting multiple：

(3) spun yarn line density after resultant yarn

(4) blending ratio

The blending ratio of component A, B in Rotor yarn is K₁、K₂, then：

(4) spun yarn dynamic line density

Assuming that draw yarn speed V₅It is constant, composition A, B feed roller speed V₀₁, V₀₂Variable be respectively：

V₀₁'=V₀₁+△V₀₁

V₀₂'=V₀₂+△V₀₂

Therefore new spun yarn dynamic line density is

(5) spun yarn dynamic blending ratio

It is assumed that：ρ₁=ρ₂=ρ₀

V₀₁+V₀₂=V₀

Then benchmark blending ratio

Work as V₀₁+V₀₂→V₀₁+△V₀₁+V₀₂+△V₀₂When blending ratio become turn to：

It is assumed that k₁=0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1

k₂=1,0.9,0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1,0

Colour mixture than gradient configuration, realize the schemes of different color matchings

In V₀Under conditions of keeping constant, by changing V₀₁、V₀₂Can changes different fibers (different color) in yarn Blending ratio (colour mixture ratio), make k₁、k₂It is changed in the range of 0~100%.Under the various dither patterns of two primary colors, colour mixture Being incremented by with 0.1 for ratio is smallest incremental, and following colour mixture can be formed by carrying out color matching：

The scheme of colour of table 1

Note：K₁+K₂=1 can have infinite combinations, and patent selection of the present invention carries out gradient colour mixture with 0.1 for a gradient Color matching, counted more than, it is mixed by the coupled drawing-off of two primary colors slivers (two kinds of color slivers), alternation colour changing, gradient color matching, twisting Close, can finally form 11 kinds of color matchings, the section coloured yarn with 11 kinds of COLOR COMPOSITION THROUGH DISTRIBUTIONs can be also formed on yarn.

(6) spun yarn line density and blending ratio stochastic and dynamic regulation and control method

Fine yarn Biomass dynamics rate of change

Again：

ρ₁=ρ₂=ρ₀

V₀₁+V₀₂=V₀

Then：

The change of yarn linear density, takes completely it can be seen from the relative increment of line density and the absolute increment of line density Certainly in V₀₁+△V₀₁、V₀₂+△V₀₂Change, then can have 5 kinds of versions, so as to there is the yarn of 5 kinds of different shapes.

1. a component line density change, the indeclinable change line density yarn of a component line density；

Or

2. the change line density yarn that two component line densities change；

3. a component is continuous, a component is discontinuous becomes line density yarn；

4. the discontinuous change line density yarn of two components；

5. two components are continuous but the change line density yarn of line density change

6. spun yarn dynamic feeding speed regulates and controls method

Due to

△V₀=△ V₀₁+△V₀₂

Δ V may be from △ V₀₁, it is also possible to from △ V₀₂, this can be determined by blending ratio.Then have：

ΔV₀₁=K '₁(V₀+ΔV)-V₀₁

ΔV₀₂=K '₂(V₀+ΔV)-V₀₂

Claims

1. a kind of asynchronous input of double slivers and the revolving cup spinning method of three fractions comb, it is characterised in that specifically include：

1) the asynchronous feeding Fen Shu areas of combined type feed roll motor to cotton using two revolution frees degree, described combined type is to cotton Roller includes the first movable roller, the second movable roller, wherein, the first movable roller, the second movable roller turn around same axle Dynamic, a point comb uses three-level combing roller；

2) combined type feed roll motor 1,2 is respectively with linear velocity V₀₁、V₀₂Motion；Revolving cup is with linear velocity V₄Motion, delivery roller is with line Speed V₅Motion；If the line density of two slivers of two feed roll motor tractions is respectively ρ₁、ρ₂, it is ρ into thread density, then turns Cup spun yarn drafting multiple

Line density after resultant yarn

The speed of three combing rollers is followed successively by：The rotating speed of first combing roller is 1500-3000rpm, and the rotating speed of the second combing roller is 3000-6000rpm, the rotating speed of the 3rd combing roller is 6000-12000rpm, wherein, the second combing roller card wire density is more than first Combing roller card wire density, the 3rd combing roller card wire density are more than the second combing roller card wire density；

3) blending ratio of two slivers in Rotor yarn is K₁、K₂Then：

4) assume to draw yarn speed V₅It is constant, the feed roller speed V of two slivers₀₁, V₀₂Variable be respectively：V₀₁'=V₀₁+ΔV₀₁, V₀₂'=V₀₂+ΔV₀₂, then the dynamic line density after resultant yarn is drawn according to formula (2)

<mrow> <mi>&Delta;</mi> <mi>&rho;</mi> <mo>=</mo> <mfrac> <mrow> <msub> <mi>&rho;</mi> <mn>1</mn> </msub> <msub> <mi>&Delta;V</mi> <mn>01</mn> </msub> <mo>+</mo> <msub> <mi>&rho;</mi> <mn>2</mn> </msub> <msub> <mi>&Delta;V</mi> <mn>02</mn> </msub> </mrow> <msub> <mi>V</mi> <mn>5</mn> </msub> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>5</mn> <mo>)</mo> </mrow> </mrow>

5) set：ρ₁=ρ₂=ρ₀, V₀₁+V₀₂=V₀, then benchmark blending ratio is obtained according to formula (3), (4) Work as V₀₁+V₀₂→V₀₁+ΔV₀₁+V₀₂+ΔV₀₂When blending ratio become turn to：

<mrow> <msup> <msub> <mi>K</mi> <mn>1</mn> </msub> <mo>&prime;</mo> </msup> <mo>=</mo> <mfrac> <mrow> <msub> <mi>V</mi> <mn>01</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>01</mn> </msub> </mrow> <mrow> <msub> <mi>V</mi> <mn>0</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>0</mn> </msub> </mrow> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>6</mn> <mo>)</mo> </mrow> </mrow>

<mrow> <msup> <msub> <mi>K</mi> <mn>2</mn> </msub> <mo>&prime;</mo> </msup> <mo>=</mo> <mfrac> <mrow> <msub> <mi>V</mi> <mn>02</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>02</mn> </msub> </mrow> <mrow> <msub> <mi>V</mi> <mn>0</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>0</mn> </msub> </mrow> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>7</mn> <mo>)</mo> </mrow> </mrow>

By controlling V₀₁、V₀₂Realize the blending ratio of different fibers or different color in yarn or colour mixture than dynamic adjust spinning.

2. the method as described in claim 1, it is characterised in that：If：ρ₁=ρ₂=ρ₀, V₀₁+V₀₂=V₀, according to formula (2), (5) Obtain the dynamic change rate into thread density：

<mrow> <msub> <mo>&Element;</mo> <mi>&rho;</mi> </msub> <mo>=</mo> <mfrac> <mrow> <msub> <mi>&Delta;V</mi> <mn>01</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>02</mn> </msub> </mrow> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>=</mo> <mfrac> <mrow> <msub> <mi>&Delta;V</mi> <mn>0</mn> </msub> </mrow> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>8</mn> <mo>)</mo> </mrow> </mrow>

By controlling, the velocity variations of two rollers are implemented as thread density and blending ratio stochastic and dynamic regulates and controls.

3. method as claimed in claim 2, it is characterised in that：

<mrow> <msup> <mi>&rho;</mi> <mo>&prime;</mo> </msup> <mo>=</mo> <mi>&rho;</mi> <mo>+</mo> <mi>&Delta;</mi> <mi>&rho;</mi> <mo>=</mo> <mfrac> <mi>&rho;</mi> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>*</mo> <mo>&lsqb;</mo> <msub> <mi>V</mi> <mn>01</mn> </msub> <mo>+</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>02</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>02</mn> </msub> <mo>)</mo> </mrow> <mo>&rsqb;</mo> </mrow>

Or

<mrow> <msup> <mi>&rho;</mi> <mo>&prime;</mo> </msup> <mo>=</mo> <mi>&rho;</mi> <mo>+</mo> <mi>&Delta;</mi> <mi>&rho;</mi> <mo>=</mo> <mfrac> <mi>&rho;</mi> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>*</mo> <mo>&lsqb;</mo> <msub> <mi>V</mi> <mn>02</mn> </msub> <mo>+</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>01</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>01</mn> </msub> <mo>)</mo> </mrow> <mo>&rsqb;</mo> </mrow>

Change the speed of one of roller, realize the change of component line density, the indeclinable modified line of component line density Density yarn.

4. method as claimed in claim 2, it is characterised in that：

<mrow> <msup> <mi>&rho;</mi> <mo>&prime;</mo> </msup> <mo>=</mo> <mi>&rho;</mi> <mo>+</mo> <mi>&Delta;</mi> <mi>&rho;</mi> <mo>=</mo> <mfrac> <mi>&rho;</mi> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>*</mo> <mo>&lsqb;</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>01</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>01</mn> </msub> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>02</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>02</mn> </msub> <mo>)</mo> </mrow> <mo>&rsqb;</mo> </mrow>

Change the speed of two rollers, realize the change line density yarn that two component line densities change.

5. method as claimed in claim 2, it is characterised in that：

<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <msup> <mi>&rho;</mi> <mo>&prime;</mo> </msup> <mo>=</mo> <mi>&rho;</mi> <mo>+</mo> <mi>&Delta;</mi> <mi>&rho;</mi> <mo>=</mo> <mfrac> <mi>&rho;</mi> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>*</mo> <mo>&lsqb;</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>01</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>01</mn> </msub> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>02</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>02</mn> </msub> <mo>)</mo> </mrow> <mo>&rsqb;</mo> </mrow> </mtd> <mtd> <mrow> <mo>(</mo> <mn>0</mn> <mo>&le;</mo> <mi>t</mi> <mo>&le;</mo> <msub> <mi>T</mi> <mn>1</mn> </msub> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced>

<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <msup> <mi>&rho;</mi> <mo>&prime;</mo> </msup> <mo>=</mo> <mi>&rho;</mi> <mo>+</mo> <mi>&Delta;</mi> <mi>&rho;</mi> <mo>=</mo> <mfrac> <mi>&rho;</mi> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>*</mo> <mo>&lsqb;</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>02</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>02</mn> </msub> <mo>)</mo> </mrow> <mo>&rsqb;</mo> </mrow> </mtd> <mtd> <mrow> <mo>(</mo> <msub> <mi>T</mi> <mn>1</mn> </msub> <mo>&le;</mo> <mi>t</mi> <mo>&le;</mo> <msub> <mi>T</mi> <mn>2</mn> </msub> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced>

<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <msup> <mi>&rho;</mi> <mo>&prime;</mo> </msup> <mo>=</mo> <mi>&rho;</mi> <mo>+</mo> <mi>&Delta;</mi> <mi>&rho;</mi> <mo>=</mo> <mfrac> <mi>&rho;</mi> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>*</mo> <mo>&lsqb;</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>01</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>01</mn> </msub> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>02</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>02</mn> </msub> <mo>)</mo> </mrow> <mo>&rsqb;</mo> </mrow> </mtd> <mtd> <mrow> <mo>(</mo> <msub> <mi>T</mi> <mn>2</mn> </msub> <mo>&le;</mo> <mi>t</mi> <mo>&le;</mo> <msub> <mi>T</mi> <mn>3</mn> </msub> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced>

<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <msup> <mi>&rho;</mi> <mo>&prime;</mo> </msup> <mo>=</mo> <mi>&rho;</mi> <mo>+</mo> <mi>&Delta;</mi> <mi>&rho;</mi> <mo>=</mo> <mfrac> <mi>&rho;</mi> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>*</mo> <mo>&lsqb;</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>02</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>02</mn> </msub> <mo>)</mo> </mrow> <mo>&rsqb;</mo> </mrow> </mtd> <mtd> <mrow> <mo>(</mo> <msub> <mi>T</mi> <mn>3</mn> </msub> <mo>&le;</mo> <mi>t</mi> <mo>&le;</mo> <msub> <mi>T</mi> <mn>4</mn> </msub> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced>

Convert speed of the speed of two rollers with converting one of roller simultaneously alternately, realize a component it is continuous, One component is discontinuous to become line density yarn, wherein t, T₁、T₂、T₃、T₄For the time.

6. method as claimed in claim 2, it is characterised in that：

<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <msup> <mi>&rho;</mi> <mo>&prime;</mo> </msup> <mo>=</mo> <mi>&rho;</mi> <mo>+</mo> <mi>&Delta;</mi> <mi>&rho;</mi> <mo>=</mo> <mfrac> <mi>&rho;</mi> <msub> <mi>V</mi> <mn>0</mn> </msub> </mfrac> <mo>*</mo> <mo>&lsqb;</mo> <mrow> <mo>(</mo> <msub> <mi>V</mi> <mn>01</mn> </msub> <mo>+</mo> <msub> <mi>&Delta;V</mi> <mn>01</mn> </msub> <mo>)</mo> </mrow> <mo>&rsqb;</mo> </mrow> </mtd> <mtd> <mrow> <mo>(</mo> <msub> <mi>T</mi> <mn>1</mn> </msub> <mo>&le;</mo> <mi>t</mi> <mo>&le;</mo> <msub> <mi>T</mi> <mn>2</mn> </msub> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced>

The speed for converting two rollers simultaneously with convert one of roller speed alternately, and the speed of one of roller Degree and checker, realize that two components are discontinuous and become line density yarn, wherein t, T₁、T₂、T₃、T₄For the time.

7. method as claimed in claim 2, it is characterised in that：

The speed of two rollers is converted, realizes that two components are continuous but the change line density yarn of line density change.

8. method as claimed in claim 2, it is characterised in that：Spun yarn dynamic feeding speed regulation and control method Δ V₀=Δ V₀₁+Δ V₀₂, velocity variations come from Δ V₀₁Or Δ V₀₂, determined by blending ratio, then：ΔV₀₁=K '₁(V₀+ΔV)-V₀₁、ΔV₀₂=K '₂ (V₀+ΔV)-V₀₂。

9. realize the device of claim 1-8 any claim methods describeds, it is characterised in that：Including spinning unit and computer Control system, spinning unit include being fed for carding agencies, cohesion twisting mechanism, coiling and molding mechanism, it is characterised in that are fed for point Comb arrangement includes combined type feed roll motor, the three-level combing roller of two revolution frees degree, the combination of described two revolution frees degree For two roller speeds of formula feed roll motor than adjustable, the cohesion twisting mechanism includes cotton-conveying pipe, revolving cup and yarn withdrawal device；Volume Winding forming machine structure includes drawing yarn winding mechanism, described computerized control system include PLC, servo-driver, Servomotor, combined type feed roll motor, the three-level combing roller of described two revolution frees degree are driven by servomotor.

10. device as claimed in claim 9, it is characterised in that the combined type feed roll motor of two described revolution frees degree includes Axle, bearing, hollow shaft, first gear, second gear, packing ring, the first movable roller, the second movable roller, the first gear, Second gear, the first movable roller, the second movable roller rotate around same axis, and first gear drives the first movable roller, Second gear drives the second movable roller.