CN105040193A - Double-sliver asynchronous feeding and three-level carding rotor spinning method and device - Google Patents

Abstract

A device of a multi-level carding rotor spinning method comprises a spinning system and a computer control system. The spinning system comprises a feeding carding mechanism, a condensed twisting mechanism and a winding shaping mechanism. The spinning system is characterized in that the feeding carding mechanism comprises two combined type feed rollers of rotation degrees of freedom and a multi-level carding roller, the speed ratio of the two combined type feed rollers of rotation degrees of freedom can be adjustable, and random adjustment and control of linear density and blending ratio of yarn which is spun through a rotor are achieved.

Description

The Revolving cup spinning spinning method of a kind of pair of asynchronous input of sliver and three fractions comb and device

Technical field

The invention belongs to the rotor spinning field of textile industry

Background technology

The general principle of Revolving cup spinning resultant yarn is: sliver is by the gripping of horn mouth through feed plate and feed roll motor, and Fen Shu district delivered to by feed roll motor rotational conveyance sliver; The combing roller of Fen Shu district High Rotation Speed carries out to sliver that shredding strips, combing is separated, mixing, makes it become to be separated from each other, filament arranged in parallel enter cotton-conveying pipe; Under airflow function, fibre stream enters revolving cup via cotton-conveying pipe, and under the centrifugal action of High Rotation Speed cup, fiber superposes mixing further in collection surface, is drawn and form yarn by female 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 " a kind of Revolving cup spinning colour mixture becomes yarn feeding device " (CN201420229715.X) is by controlling feed roller speed, the ripe bar of more than two or two is fed with continuous constant feeding or point segment variable, become blending ratio formation and there is monochrome or colorful fiber mixing, adjust the effect of blending ratio to realize yarn density constant.But this invention exists two problems: the first, just conceptually propose to realize the constant colour mixture of line density and the spinning of section coloured silk by coupling drawing-off in invention, do not provide under coupling drawing-off realizes the constant condition of line density and how to change and mix when colour mixture ratio.Meanwhile, specific embodiment and embodiment is not provided.Second, this patent application still uses traditional single combing roller, when three slivers feed simultaneously, original point comb drafting system can not complete fully many slivers are stripped, combing, the drawing-off of mixing Sum decomposition, fibre bundle can be caused thus to decompose insufficient, causing stifled combing roller and stall cup situation to occur, easily there is broken end and the defect such as slubbing, cotton knot in spinning.Meanwhile, although each sliver constant total quantity of coupling feeding, each sliver feed quantity there are differences, and causes the chance of fiber empir-ical formulation also few, therefore cause color blending effect undesirable compared with Duan Fenshu district.

What can realize the change of blending ratio constant and line density in current Revolving cup spinning mainly contains patent " method of Rotor Spinning Slubby Yarn and spinning apparatus " (grant number CN00137211.4), its principle is asynchronous machine and stepper motor, through differentiator, screw mandrel and worm gear, drive feed roller, under intelligent controller controls, perform following operation by stepper motor: from reducing to low speed at a high speed; Continuous service a period of time; Accelerate at a high speed; Continuous service a period of time, revolving cup spins one section of slub yarn.This patent can the yarn of production modified line density, but cannot change yarn ratio.

The yarn that production line density and blending ratio all change, need more than two or two rove of feeding can distinguish On-line Control feed quantity separately, and while changing each rove feed quantity respectively, total rove feed quantity also to be made also to be controlled, there is no the production that patent can realize this yarn at present.The all indeclinable yarn of production line density and blending ratio, subject matter is, can not realize two or more fiber carry out blending with arbitrary proportion at Revolving cup spinning spinning process.

Summary of the invention

In order to solve the problem, the present invention improves traditional rotor spinning machine in mechanism.The device of a kind of rotor spinning method of three fraction combs and the feeding of many components, comprise spinning unit and computerized control system, spinning unit comprises feeds to carding agencies, cohesion twisting mechanism, coiling and molding mechanism, it is characterized in that feeding the combined type feed roll motor comprising three grades of combing rollers and two revolution frees degree to carding agencies, the velocity ratio of two rollers of the combined type feed roll motor of two described revolution frees degree is adjustable.Described cohesion twisting mechanism comprises cotton-conveying pipe, revolving cup and yarn withdrawal device; Coiling and molding mechanism comprises draws yarn winding mechanism.Described computerized control system comprises PLC, servo-driver, servomotor, and the combined type feed roll motor of two described revolution frees degree, three grades of combing rollers are by driven by servomotor.The combined type feed roll motor of the described revolution free degree comprises axle, bearing, hollow shaft, the first gear, the second gear, packing ring, the first movable roller, the second movable roller, described first gear, the second gear, the first movable roller, the second movable roller rotate around same axis, the movable roller of first gear drive first, the movable roller of the second gear drive second.Three grades of described combing rollers are by the first combing roller, the second combing roller and the 3rd combing roller is arranged in parallel forms.The rotating speed of three grades of described combing rollers increases progressively step by step, and the rotating speed of the first combing roller is 1500-3000rpm, and the rotating speed of the second combing roller is 3000-6000rpm, and the rotating speed of the 3rd combing roller is 6000-12000rpm., the card wire density of described three grades of combing rollers increases step by step.

Another object of the present invention is to provide a kind of method using said apparatus to carry out rotor spinning, comprise to cotton, point comb, cohesion twisting, draw yarn winding, it is characterized in that: described to the cotton combined type feed roll motor asynchronous feeding Fen Shu district adopting two revolution frees degree, described point of comb employing three grades of combing rollers.

Combined roller and three combing rollers of design are configured by the present invention, can by two slivers (or strip of the strip of two kinds of different materials or two kinds of colors, lower abbreviation two component), Revolving cup spinning Fen Shu district is non-synchronously fed through combined type feed roll motor, through the shredding step by step of three grades of combing rollers, combing, orientation, mixing and decompose drawing-off, two slivers be progressively decomposed into bundle fiber and be decomposed into single fiber further.Under the effect of centrifugal force and air-flow, to depart from from combing roller and the continuous filament of transfer flows to cup into High Rotation Speed.Fibre stream is condensed into yarn again under revolving cup centrifugal action, then through the twisting of resistance twist device, is derived form Rotor yarn by delivery roller.In spinning process, servo drive system is controlled by computer program, make the feed roll motor with two frees degree non-synchronously respectively by two sliver feeding Fen Shu districts, by regulating and controlling feed quantity and the feeding ratio of two feed roll motor, just can the line density of the final resultant yarn of this Revolving cup spinning of dynamic-configuration and the blending ratio of two components, produce slub yarn, section coloured yarn, section color bunchy yarn, color matching yarn.

The rotating speed of the first combing roller is lower, and when can ensure that many sliver feed quantities differ greatly like this, in each sliver, fiber is subject to the carding times total amount of combing roller all in rational scope, reduces the damage of fiber; The rotating speed of the second combing roller is higher than the first combing roller, and through the combing of the second combing roller, the machine-direction oriented of fiber is optimized, and horizontal transfer is mixed into one-step optimization; 3rd combing roller is high speed combing roller, and fiber not only obtains better combing and transfer through the 3rd combing roller, and speed gets a promotion, and arrives and enters the centrifugal force requirement of comb and parallel cotton fibers prior to spinning passage, can enter revolving cup resultant yarn in order smoothly.By above-mentionedly multistagely to strip, shredding, removal of impurities, point comb drawing-off, transfer, complete smoothly and sliver resolved into web, web resolve into bundle fiber again, bundle fiber is resolving into filamentary super draft function, improve the function in Revolving cup spinning Fen Shu district, there is the effect of flexibility, efficient, high yield.

(2) patent of the present invention is on the basis of mechanical creative design, constructs corresponding spinning Mathematical Modeling and programmed algorithm, by the servo-control system of electromechanical integration, achieves line density and the blending ratio of randomly regulating Revolving cup spinning resultant yarn.In the particular embodiment, the spinning of following four kinds of yarns has been carried out:

1. the yarn of line density constant and blending ratio change, as have gradual change color or segmentation color etc. line density section coloured yarn;

2. the yarn of blending ratio constant and line density change, as slub yarn, tufted yarn, some point yarn etc.;

3. the yarn that all changes of line density and blending ratio, as section color bunchy yarn, section color tufted yarn, Duan Caidian point yarn etc.;

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

Accompanying drawing explanation

Fig. 1: rotor spinning flow chart

Fig. 2: three combing roller Revolving cup spinning rove combings are drawn through procedure chart

Fig. 3: feed roll motor transmission schematic diagram, 3b is the right view of 3a

Fig. 4: combined type feed roll motor structure chart

Fig. 5: two component asynchronous secondary drawing-off spinning control system figure

Fig. 6: two component asynchronous input Revolving cup spinning resultant yarn system control model figure

1-1,1-2,1-3-combing roller, 1-4,1-5-impurity discharging port, 1-6-feed roll motor, 1-7-sliver, 1-8-pressurizes shell fragment, 1-9-feed plate, 1-10-cotton-conveying pipe, 1-11-resistance twist device, 1-12-revolving cup, 1-13-aspirating hole, 1-14,1-15-delivery roller, 1-16-yarn

2-1,2-2-feed roll motor, 2-3,2-4-sliver, 2-5-feed plate, 2-6,2-7,2-8-combing roller, 2-9-fibre stream, 2-10-revolving cup, 2-11-yarn

3a-1,3a-4-roller, 3a-2,3a-7-gear, 3a-3,3a-5-carrier gear, 3a-6-roller shaft, 3a-8,3a-9,3a-10-combing roller, 3a-11-spun yarn; 3b-1-gear, 3b-2-roller, 3b-3-gear, 3b-4-gear.

4-1-bearing, 4-2-hollow shaft, 4-3-gear, 4-4-packing ring, 4-5-roller, 4-6-roller, 4-7-gear, 4-8-axle.4-5,4-6 two movable rollers are driven by gear 4-3 and gear 4-7 respectively.

Detailed description of the invention

Spinning Process Design:

V ₀₁: the linear velocity of feed roll motor 1; V ₀₂: the linear velocity of feed roll motor 2; V ₁: the linear velocity of combing roller 1;

V ₂: the linear velocity of combing roller 2; V ₃: the linear velocity of combing roller 3; V ₄: revolving cup linear velocity; V ₅: delivery roller linear velocity;

ρ ₁:: the line density (grammes per square metre/rice) of sliver A;

ρ ₂: the line density (grammes per square metre/rice) of sliver B;

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

ρ ₁₁: sliver A is through the line density (grammes per square metre/rice) of combing roller 1;

ρ ₁₂: sliver A is through the line density (grammes per square metre/rice) of combing roller 2;

ρ ₁₃: sliver A is through the line density (grammes per square metre/rice) of combing roller 3;

ρ ₁₄: the line density of sliver A in revolving cup (grammes per square metre/rice),

ρ ₂₁: sliver B is through the line density (grammes per square metre/rice) of combing roller 1;

ρ ₂₂: sliver B is through the line density (grammes per square metre/rice) of combing roller 2;

ρ ₂₃: sliver B is through the line density (grammes per square metre/rice) of combing roller 3;

ρ ₂₄: the line density of sliver B in revolving cup (grammes per square metre/rice),

E ₁: combing roller 1 is relative to the draw ratio of feed roll motor;

E ₂: combing roller 2 is relative to the draw ratio of combing roller 1;

E ₃: combing roller 3 is relative to the draw ratio of combing roller 2;

E ₄: revolving cup is relative to the draw ratio of combing roller 3;

E ₅: delivery roller is relative to the draw ratio of revolving cup;

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

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

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

During for many sliver feedings, when feed roller feeding speed difference is larger, each component fiber Hold time difference is larger, in single combing roller Revolving cup spinning, due to needs balance exploitation/carded fiber, and the requirement to fiber speed when transferring to comb and parallel cotton fibers prior to spinning passage, the rotating speed of single combing roller is very high, time such sliver feed quantity difference is large, the carding times that in two slivers, fiber is subject to differs greatly, and the fibre damage that carding times is many is excessive.

In order to solve combing roller rotating speed to fibre damage and the mixed uniformly problem of fibre stream, this patent adopts three combing roller forms, i.e. the 1st combing roller, the 2nd combing roller and the 3rd combing roller.The rotating speed (ω=1500-3000rpm) of the first combing roller is lower, card wire density is relatively low, card wire operating angle is relatively little, to strip, shredding, removal of impurities and point comb, the carding times that emphasis makes each sliver be subject to, in rational scope, reduces the damage of fiber; The rotating speed (ω=3000-6000rpm) of the second combing roller, to strip, divide comb drawing-off and fibre migration, card wire density is greater than the first combing roller card wire density, card wire operating angle is also relatively bigger, through the combing of the second combing roller, the machine-direction oriented of fiber is optimized, and horizontal transfer is mixed into one-step optimization; 3rd combing roller is high speed combing roller (ω=6000-12000rpm), to strip, divide comb drawing-off and fibre migration, card wire density is greater than the second combing roller card wire density, card wire operating angle is maximum, fiber not only obtains better combing and transfer through the 3rd combing roller, and running up due to the 3rd combing roller, under air-flow and centrifugal action, high separation and continuous print fibre stream is taken advantage of a situation by cotton-conveying pipe, arrangement enters revolving cup cohesion resultant yarn in an orderly manner.

Stripped by three combing rollers multistage, shredding, removal of impurities, point comb drawing-off, transfer, complete smoothly and sliver resolved into web, web resolve into bundle fiber again, bundle fiber is resolving into filamentary super draft function, improve the function in Revolving cup spinning Fen Shu district, the rotor spinning meeting the many asynchronous feedings of sliver, to a point particular/special requirement for comb, achieves flexibility, efficiently point comb function.

(2) Revolving cup spinning resultant yarn drafting multiple:

$E_1=\frac{({\mathrm{\ρ}}_1+{\mathrm{\ρ}}_2)V_1}{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}=\frac{{\mathrm{\ρ}}_1+{\mathrm{\ρ}}_2}{{\mathrm{\ρ}}_{11}+{\mathrm{\ρ}}_{21}}$

$E_2=\frac{V_2}{V_1}=\frac{{\mathrm{\ρ}}_{11}+{\mathrm{\ρ}}_{21}}{{\mathrm{\ρ}}_{12}+{\mathrm{\ρ}}_{22}}$

$E_3=\frac{V_3}{V_2}=\frac{{\mathrm{\ρ}}_{12}+{\mathrm{\ρ}}_{22}}{{\mathrm{\ρ}}_{13}+{\mathrm{\ρ}}_{23}}$

$E_4=\frac{V_4}{V_3}=\frac{{\mathrm{\ρ}}_{13}+{\mathrm{\ρ}}_{23}}{{\mathrm{\ρ}}_{14}+{\mathrm{\ρ}}_{24}}$

$E_5=\frac{V_5}{V_4}=\frac{{\mathrm{\ρ}}_{14}+{\mathrm{\ρ}}_{24}}{\mathrm{\ρ}}$

$E=E_1*E_2*E_3*E_4*E_5=\frac{({\mathrm{\ρ}}_1+{\mathrm{\ρ}}_2)V_5}{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}=\frac{{\mathrm{\ρ}}_1+{\mathrm{\ρ}}_2}{\mathrm{\ρ}}$

$E=\frac{({\mathrm{\ρ}}_1+{\mathrm{\ρ}}_2)V_5}{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}=\frac{{\mathrm{\ρ}}_1+{\mathrm{\ρ}}_2}{\mathrm{\ρ}}$

(3) fine yarn density after resultant yarn

$\mathrm{\ρ}=\frac{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}{V_5}$

(4) blending ratio

Component A, the B blending ratio in Rotor yarn is K ₁, K ₂, then:

$K_1=\frac{{\mathrm{\ρ}}_1{V}_{01}}{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}$

$K_2=\frac{{\mathrm{\ρ}}_2{V}_{02}}{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}$

(4) the dynamic line density of spun yarn

Suppose to draw yarn speed V ₅constant, the feed roller speed V of composition A, B ₀₁, V ₀₂variable be respectively:

V ₀₁′＝V ₀₁+△V ₀₁

V ₀₂′＝V ₀₂+△V ₀₂

Therefore the dynamic line density of new spun yarn is

$\begin{array}{c}{\mathrm{\ρ}}^{\′}\frac{{\mathrm{\ρ}}_1(V_{01}+{\mathrm{\ΔV}}_{01})+{\mathrm{\ρ}}_2(V_{02}+{\mathrm{\ΔV}}_{02})}{V_5}\\ =\frac{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}{V_5}+\frac{{\mathrm{\ρ}}_1{\mathrm{\ΔV}}_{01}+{\mathrm{\ρ}}_2{\mathrm{\ΔV}}_{02}}{V_5}\end{array}$

$\mathrm{\Δ}\mathrm{\ρ}=\frac{{\mathrm{\ρ}}_1{\mathrm{\ΔV}}_{01}+{\mathrm{\ρ}}_2{\mathrm{\ΔV}}_{02}}{V_5}$

(5) the dynamic blending ratio of spun yarn

Assuming that: ρ ₁=ρ ₂=ρ ₀

V ₀₁+V ₀₂＝V ₀

Then benchmark blending ratio

$K_1=\frac{V_{01}}{V_0}$

$K_2=\frac{V_{02}}{V_0}$

Work as V ₀₁+ V ₀₂→ V ₀₁+ △ V ₀₁+ V ₀₂+ △ V ₀₂time blending ratio be changed to:

${K_1}^{\′}=\frac{V_{01}+{\mathrm{\ΔV}}_{01}}{V_0+{\mathrm{\ΔV}}_0}$

${K_2}^{\′}=\frac{V_{02}+{\mathrm{\ΔV}}_{02}}{V_0+{\mathrm{\ΔV}}_0}$

Assuming that k ₁=0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1

k ₂＝1，0.9，0.8，0.7，0.6，0.5，0.4，0.3，0.2，0.1，0

The gradient configuration of colour mixture ratio, realizes the scheme of different color matching

At V ₀under keeping constant condition, by changing V ₀₁, V ₀₂just can change the blending ratio (colour mixture ratio) of different fiber (different color) in yarn, make k ₁, k ₂change in 0 ~ 100% scope.Under the various dither patterns of two primary colors, colour mixture ratio increase progressively with 0.1 for smallest incremental, carry out color matching and can form following colour mixture:

Table 1 scheme of colour

Note: K ₁+ K ₂=1 can have infinite combinations, it is that a gradient carries out the color matching of gradient colour mixture that patent of the present invention is selected with 0.1, through above statistics, by two primary colors slivers (two kinds of color slivers) through coupling drawing-off, alternation colour changing, gradient color matching, twisting mixing, finally can form 11 kinds of color matchings, also can form the section coloured yarn with 11 kinds of COLOR COMPOSITION THROUGH DISTRIBUTION on yarn.

(6) fine yarn density and blending ratio stochastic and dynamic regulate and control method

Fine yarn Biomass dynamics rate of change

$\begin{array}{c}{\mathrm{\ϵ}}_{\mathrm{\ρ}}=\frac{\mathrm{\Δ}\mathrm{\ρ}}{\mathrm{\ρ}}=\frac{\frac{{\mathrm{\ρ}}_1{\mathrm{\ΔV}}_{01}+{\mathrm{\ρ}}_2{\mathrm{\ΔV}}_{02}}{V_5}}{\frac{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}{V_5}}\\ =\frac{{\mathrm{\ρ}}_1{\mathrm{\ΔV}}_{01}+{\mathrm{\ρ}}_2{\mathrm{\ΔV}}_{02}}{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}\end{array}$

Again:

ρ ₁＝ρ ₂＝ρ ₀

V ₀₁+V ₀₂＝V ₀

Then:

$\begin{array}{c}{\mathrm{\ϵ}}_{\mathrm{\ρ}}=\frac{{\mathrm{\ΔV}}_{01}+{\mathrm{\ΔV}}_{02}}{V_0}\\ =\frac{{\mathrm{\ΔV}}_0}{V_0}\end{array}$

As can be seen from the relative increment of line density and the absolute increment of line density, the change of yarn linear density, depends on V completely ₀₁+ △ V ₀₁, V ₀₂+ △ V ₀₂change, then can have 5 kinds of versions, thus the yarn of 5 kinds of different shapes can be had.

1. a component line density change, a component line density indeclinable modified line density yarn;

${\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[V_{01}+(V_{02}+{\mathrm{\ΔV}}_{02})\]$

Or

${\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[V_{02}+(V_{01}+{\mathrm{\ΔV}}_{01})\]$

2. the modified line density yarn that all changes of two component line densities;

${\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]$

3. component continuously, a component discontinuous modified line density yarn;

$\begin{array}{cc}{\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]& (0\≤t\≤T_1)\end{array}$

$\begin{array}{cc}{\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{02}+{\mathrm{\ΔV}}_{02})\]& (T_1\≤t\≤T_2)\end{array}$

$\begin{array}{cc}{\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]& (T_2\≤t\≤T_3)\end{array}$

$\begin{array}{cc}{\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{02}+{\mathrm{\ΔV}}_{02})\]& (T_3\≤t\≤T_4)\end{array}$

4. two component all discontinuous modified line density yarns;

$\begin{array}{cc}{\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]& (0\≤t\≤T_1)\end{array}$

$\begin{array}{cc}{\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})\]& (T_1\≤t\≤T_2)\end{array}$

$\begin{array}{cc}{\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]& (T_2\≤t\≤T_3)\end{array}$

$\begin{array}{cc}{\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{02}+{\mathrm{\ΔV}}_{02})\]& (T_3\≤t\≤T_4)\end{array}$

5. two components all continuously but the modified line density yarn of line density change

${\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]$

6. the dynamic feeding speed regulate and control method of spun yarn

Due to

△V ₀＝△V ₀₁+△V ₀₂

Δ V may from △ V ₀₁, also may from △ V ₀₂, this can be determined by blending ratio.Then have:

ΔV ₀₁＝K‘ ₁(V ₀+ΔV)-V ₀₁

ΔV ₀₂＝K‘ ₂(V ₀+ΔV)-V ₀₂

$\frac{{K_1}^{\′}}{{K_2}^{\′}}=\frac{V_{01}+{\mathrm{\ΔV}}_{01}}{V_{02}+{\mathrm{\ΔV}}_{02}}$

Claims (10)

1. a Revolving cup spinning spinning method for two asynchronous input of sliver and three fractions comb, is characterized in that specifically comprising:

1) the cotton combined type feed roll motor asynchronous feeding Fen Shu district adopting two revolution frees degree is given, point comb employing three grades of combing rollers;

2) combined type feed roll motor 1,2 is respectively with linear velocity V _01,v ₀₂motion; Revolving cup is with linear velocity V ₄motion, delivery roller is with linear velocity V ₅motion; If the line density of two slivers of two feed roll motor tractions is respectively ρ ₁, ρ ₂, one-tenth thread density is ρ, then Revolving cup spinning resultant yarn drafting multiple

$E=\frac{({\mathrm{\ρ}}_1+{\mathrm{\ρ}}_2)V_5}{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}=\frac{{\mathrm{\ρ}}_1+{\mathrm{\ρ}}_2}{\mathrm{\ρ}}---\left(1\right)$

Line density after resultant yarn

$\mathrm{\ρ}=\frac{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}{V_5}---\left(2\right)$

The speed of three combing rollers is followed successively by: the rotating speed of the first combing roller is 1500-3000rpm, and the rotating speed of the second combing roller is 3000-6000rpm, and the rotating speed of the 3rd combing roller is 6000-12000rpm.

3) blending ratio of two slivers in Rotor yarn is K ₁, K ₂then:

$K_1=\frac{{\mathrm{\ρ}}_1{V}_{01}}{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}---\left(3\right)$

$K_2=\frac{{\mathrm{\ρ}}_2{V}_{02}}{{\mathrm{\ρ}}_1{V}_{01}+{\mathrm{\ρ}}_2{V}_{02}}---\left(4\right)$

4) suppose to draw yarn speed V ₅constant, the feed roller speed V of two slivers ₀₁, V ₀₂variable be respectively: V ₀₁'=V ₀₁+ △ V ₀₁, V ₀₂'=V ₀₂+ △ V ₀₂, then the dynamic line density after resultant yarn is drawn according to formula (2)

$\mathrm{\Δ}\mathrm{\ρ}=\frac{{\mathrm{\ρ}}_1{\mathrm{\ΔV}}_{01}+{\mathrm{\ρ}}_2{\mathrm{\ΔV}}_{02}}{V_5}---\left(5\right)$

5) establish: ρ ₁=ρ ₂=ρ ₀, V ₀₁+ V ₀₂=V ₀, then benchmark blending ratio is obtained according to formula (3), (4) work as V ₀₁+ V ₀₂→ V ₀₁+ △ V ₀₁+ V ₀₂+ △ V ₀₂time blending ratio be changed to:

${K_1}^{\′}=\frac{V_{01}+{\mathrm{\ΔV}}_{01}}{V_0+{\mathrm{\ΔV}}_0}---\left(6\right)$

${K_2}^{\′}=\frac{V_{02}+{\mathrm{\ΔV}}_{02}}{V_0+{\mathrm{\ΔV}}_0}---\left(7\right)$

By control V ₀₁, V ₀₂realize the blending ratio of different fiber or different color in yarn or the dynamic conditioning spinning of colour mixture ratio.

2. the method for claim 1, is characterized in that: establish: ρ ₁=ρ ₂=ρ ₀, V ₀₁+ V ₀₂=V ₀, the dynamic change rate of thread density must be become according to formula (2), (5):

${\mathrm{\ϵ}}_{\mathrm{\ρ}}=\frac{{\mathrm{\ΔV}}_{01}+{\mathrm{\ΔV}}_{02}}{V_0}=\frac{{\mathrm{\ΔV}}_0}{V_0}---\left(8\right)$

Thread density and the regulation and control of blending ratio stochastic and dynamic are embodied as by the velocity variations controlling two rollers.

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

${\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[V_{01}+(V_{02}+{\mathrm{\ΔV}}_{02})\]$

Or

${\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[V_{02}+(V_{01}+{\mathrm{\ΔV}}_{01})\]$

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

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

${\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]$

The speed of change two rollers, realizes the modified line density yarn that two component line densities all change.

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

$\begin{array}{cc}{\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]& (0\≤t\≤T_1)\\ {\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{02}+{\mathrm{\ΔV}}_{02})\]& (T_1\≤t\≤T_2)\\ {\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]& (T_2\≤t\≤T_3)\\ {\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{02}+{\mathrm{\ΔV}}_{02})\]& (T_3\≤t\≤T_4)\end{array}$

The speed simultaneously converting two rollers hockets with the speed of one of them roller of conversion, realize a component continuously, a component discontinuous modified line density yarn, wherein t, T ₁, T ₂, T ₃, T ₄for the time.

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

$\begin{array}{cc}{\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]& (0\≤t\≤T_1)\\ {\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})\]& (T_1\≤t\≤T_2)\\ {\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]& (T_2\≤t\≤T_3)\\ {\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{02}+{\mathrm{\ΔV}}_{02})\]& (T_3\≤t\≤T_4)\end{array}$

The speed simultaneously converting two rollers hockets with the speed of one of them roller of conversion, and the speed of one of them roller is also checker, realizes two component discontinuous modified line density yarns, wherein t, T ₁, T ₂, T ₃, T ₄for the time.

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

${\mathrm{\ρ}}^{\′}=\mathrm{\ρ}+\mathrm{\Δ}\mathrm{\ρ}=\frac{\mathrm{\ρ}}{V_0}*\[(V_{01}+{\mathrm{\ΔV}}_{01})+(V_{02}+{\mathrm{\ΔV}}_{02})\]$

The speed of conversion two rollers, realizes two components all continuously but the modified line density yarn of line density change.

8. method as claimed in claim 2, is characterized in that: spun yarn dynamic feeding speed regulate and control method △ V ₀=△ V ₀₁+ △ V ₀₂, velocity variations is from △ V ₀₁or △ V ₀₂, determined by blending ratio, then: Δ V ₀₁=K ' ₁(V ₀+ Δ V)-V ₀₁, Δ V ₀₂=K ' ₂(V ₀+ Δ V)-V ₀₂.

9. realize the device of method described in above-mentioned arbitrary claim, it is characterized in that: comprise spinning unit and computerized control system, spinning unit comprises feeds to carding agencies, cohesion twisting mechanism, coiling and molding mechanism, it is characterized in that feeding the combined type feed roll motor, the three grades of combing rollers that comprise two revolution frees degree to carding agencies, two roller speeds of the combined type feed roll motor of described two revolution frees degree are than adjustable, and described cohesion twisting mechanism comprises cotton-conveying pipe, revolving cup and yarn withdrawal device; Coiling and molding mechanism comprises draws yarn winding mechanism, and described computerized control system comprises PLC, servo-driver, servomotor, and the combined type feed roll motor of two described revolution frees degree, three grades of combing rollers are by driven by servomotor.

10. device as claimed in claim 9, it is characterized in that the combined type feed roll motor of two described revolution frees degree comprises axle, bearing, hollow shaft, the first gear, the second gear, packing ring, the first movable roller, the second movable roller, described first gear, the second gear, the first movable roller, the second movable roller rotate around same axis, the movable roller of first gear drive first, the movable roller of the second gear drive second.