CN205133849U - Tertiary high -efficient high yield rotor spinning spinning device who divides roller - Google Patents

Abstract

The utility model relates to a high-efficiency and high-yield rotor spinning device with three-stage carding rollers, which includes a spinning system and a computer control system. The spinning system includes a feeding and carding mechanism, a cohesive twisting mechanism, and a winding forming mechanism. It is characterized in that the feeding and carding mechanism includes cotton feeding rollers and three-stage carding rollers. The condensing and twisting mechanism includes a cotton feeding channel, a rotor, and a yarn-drawing device; the winding forming mechanism includes a yarn-drawing and winding mechanism, and the computer control system includes a PLC programmable controller, a servo driver, and a servo motor. The cotton feeding roller and three-stage carding roller are driven by servo motors.

Description

High-efficiency and high-production rotor spinning device with three-stage opening roller

technical field

The utility model belongs to the field of rotor spinning in the textile industry.

Background technique

Rotor spinning forms yarn by feeding cotton, carding and rotor coagulation and twisting, and obtains yarn in rotor spinning package through yarn drawing and winding device. As a condition of rotor spinning, the sliver is separated into a continuous fiber flow containing only 1-4 fibers in the section by the opening roller and the air channel before entering the rotor. This is a necessary condition for the smooth spinning of the rotor, and it is also a key condition for restricting the increase of the output of the rotor spinning and the expansion of the spinning count.

Centering on this key point, there are two ways to increase the output of rotor spinning: one way is to increase the draft ratio of the carding roller to the sliver, so as to ensure that the fed sliver is separated from the carding roller and the air flow to form a The cross-section fiber is a continuous fiber flow with 1-4 fibers; the second way is to increase the speed of the rotor and the yarn delivery speed. This patent focuses on the patented technology of increasing the output of rotor spinning and expanding the spinning count by increasing the draft ratio of the opening roller to the sliver.

In recent years, the speed of the rotor has been doubled, and the speed of 8000rpm of the opening roller is considered to be its limit speed. If the speed of the opening roller is too high to strip and card the sliver, the fibers will be damaged. Breaking or pulling off makes the yarn strength drop sharply. At the front end of the rotor, the degree of separation of the sliver by the opening roller and the air flow channel is an important indicator that needs to be controlled.

Assuming that the number of fibers contained in the sliver is constant, and the separation degree of the airflow channel to the fiber flow is constant (controlled by the airflow pressure difference at both ends), the number of fibers in the section of the fiber flow when it leaves the opening roller can be used as the opening roller. Separation of sliver. Obviously, the smaller the number of fibers, the higher the degree of carding separation, and the more the number of fibers, the lower the degree of carding separation. During the yarn forming process of rotor spinning, the degree of separation of fibers on the surface of the carding roller must reach a certain level. Below this level, the situation of blocking the carding roller and rotor cup will occur. No matter spinning low-count yarn or high-count yarn, The degree of separation of the fiber flow entering the rotor is the same, that is, the number of fibers in the section of the continuous fiber flow is 1-4.

To increase spinning output, it is necessary to increase the supply of sliver. Assuming that the quantity of sliver remains unchanged, in order to increase the supply of sliver, the rotational speed of the feeding roller must be increased. In order to make the sliver still achieve the original degree of fiber separation, the speed of the opening roller must be increased proportionally. However, stripping and carding the sliver at an excessively high speed of the opening roller will cause too many fibers to be broken or pulled, resulting in a sharp decline in the yarn strength. Typically, the maximum speed of the opening roller is 8000 rpm. This has just caused the mismatch between the opening capacity of the opening roller and the speed improvement of the rotor.

Similarly, when spinning coarse-count yarn, with the same amount of sliver fed, the feeding speed of the cotton roller is much higher than that of high-count yarn sliver, in order to achieve the fiber separation degree when entering the rotor, the production of coarse-count yarn Greater separation and higher opening roller speeds are required than for high count yarns. Since the maximum speed of the opening roller is 8000rpm, the maximum speed of the opening roller limits the supply of carded fibers when producing medium and low-count yarns, so there is a strange circle in which the output is high but the spinning speed is not high when spinning low-count yarns .

All in all, the main contradiction to improve the production efficiency of rotor spinning machine is: the contradiction between high speed of opening roller and increased fiber damage.

Contents of the invention

In order to solve the above problems, the utility model adopts a three-stage carding rotor spinning method, including cotton feeding, carding, cohesion and twisting, yarn drawing and winding. The carding adopts three-stage carding rollers, that is, the first carding roller, the second carding roller and the third carding roller are arranged in parallel. The speed of the three-stage combing rollers increases step by step, the speed of the first combing roller is 3000-5000rpm, the speed of the second combing roller is 6000-10000rpm, the speed of the third combing roller is 12000-20000rpm The needle density of the comb roller increases step by step, and the work competition of the needle decreases step by step.

In the single opening roller rotor spinning, the function of the opening roller includes two parts, one function is to strip the fiber from the cotton sliver at the nip of the cotton feeding roller and the cotton feeding plate, to realize the carding and separation of the fiber, The substantial increase in the speed of the comb roller increases the stripping force of the opening roller on the fiber, which easily breaks the fiber and reduces the quality of the yarn. Another function is to transport the fibers to the carding channel. The higher the speed of the opening roller, the greater the centrifugal force of the fiber, and the easier it is for the fiber to separate from the opening roller and enter the carding channel. Due to the need to balance stripping, carding fibers, and the requirements for fiber speed when transferring to the carding channel, the maximum speed of the single opening roller is limited, and it is generally considered that it should not exceed 8000rpm.

The use of three-stage carding rollers, on the one hand, realizes the flexible stripping and flexible drafting of the sliver by increasing the draft ratio step by step; on the other hand, by increasing the total draft ratio of the carding system, the carding capacity and The matching of rotor spinning capacity improves the adaptability of rotor spinning and further increases the output of rotor spinning.

The rotational speed of the first opening roller is low, which can ensure that when the opening roller strips the fibers from the feeding roller and the jaws of the cotton feeding plate, the stripping force on the fibers is small, reducing the breakage and damage of the fibers; the second The speed of the opening roller is higher than that of the first opening roller. After the carding of the second opening roller, the longitudinal orientation of the fibers is optimized, the horizontal transfer and mixing are further optimized, and the separation degree of the fibers is further improved; the third opening roller is a high-speed separating roller. Combing roller, the fiber passes through the third opening roller not only to get better carding and transfer, but at this time, the fiber is basically in a single fiber state, achieving a high degree of fiber separation, and the speed is increased to meet the centrifugal force requirement for entering the carding channel , can enter the rotor into yarn smoothly and orderly. At the same time, the speed ratio between the three carding rollers is relatively small, and the connection between the fibers on the carding rollers is weak. The transmission of fibers between the three carding rollers has the effect of centrifugal force and air flow, and the stripping effect of the fibers bears The force is very small, and the damage to the fiber is very small.

Spinning Process Calculations

Among them, V ₀ : line speed of feeding roller; V ₁ : line speed of opening roller 1; V ₂ : line speed of opening roller 2; V ₃ : line speed of opening roller 3; V ₄ : rotor line Speed; V ₅ : linear speed of drawing roller;

ρ ₀ : linear density of sliver (gram weight/meter);

ρ ₁ : linear density of sliver A passing through opening roller 1 (gram weight/meter);

ρ ₂ : linear density of sliver A passing through opening roller 2 (gram weight/meter);

ρ ₃ : the linear density (gram weight/meter) of the sliver A passing through the opening roller 3;

ρ ₄ : linear density of sliver A in the rotor (gram weight/m),

ρ: Yarn density (gram weight/meter);

E ₁ : the draft ratio of opening roller 1 relative to the feeding roller;

E ₂ : draft ratio of opening roller 2 relative to opening roller 1;

E ₃ : draft ratio of carding roller 3 relative to carding roller 2;

E ₄ : the draft ratio of the rotor relative to the opening roller 3;

E ₅ : The draft ratio of the threading roller relative to the rotor;

E: The total draft ratio of rotor spinning, which is equal to the draft ratio of the drawing roller relative to the cotton feeding roller.

Through the above-mentioned multi-stage stripping, opening, impurity removal, carding, drafting, and transfer, the ultra-large drafting function of decomposing the slivers into cotton webs, and then decomposing the cotton webs into bundles of fibers, and decomposing the bundles of fibers into single fibers is successfully completed , which improves the function of the carding area of the rotor spinning, and has the effect of flexibility, high efficiency and high production.

Another object of this utility model is to provide a device for a three-stage carding and rotor spinning method, including a spinning system and a computer control system. The mechanism is characterized in that the feeding and carding mechanism includes cotton feeding rollers and three-stage carding rollers. The condensing and twisting mechanism includes a cotton feeding channel, a rotor, and a yarn-drawing device; the winding forming mechanism includes a yarn-drawing and winding mechanism, and the computer control system includes a PLC programmable controller, a servo driver, and a servo motor. The cotton feeding roller and three-stage carding roller are driven by servo motors. It is composed of a series of instructions and modularized programs, so that the control system drives the actuator to complete the specified actions and tasks according to a certain sequence of time and space, and drives the spinning device to complete spinning.

Description of drawings

Figure 1: Flow chart of rotor spinning

Figure 2: Carding and drafting process of rotor spun roving with three carding rollers

Figure 3: Diagram of control system for multi-stage drafting and spinning with three opening rollers

Figure 4: Control mode diagram of rotor spinning system with three opening rollers

1, 2, 3-Carding roller, 4,5-Miscellaneous outlet, 6-Cotton feeding roller, 7-Sliver, 8-Pressure shrapnel, 9-Cotton feeding plate, 10-Cotton delivery channel, 11-Resistance Twister, 12-rotor cup, 13-suction hole, 14,15-drawing roller, 16-yarn

detailed description

By comparing the existing Autocoro360 type single opening roller spinning machine and the three opening roller rotor spinning machine to produce 28tex yarn and 60tex yarn respectively as an example, it shows that the three opening roller rotor spinning machine has the advantages of stripping fibers, Carding effect, and the advantage of increasing production efficiency.

Embodiment 1: produce low special yarn

Taking the existing Autocoro360 rotor spinning machine and three-roller rotor spinning machine to produce 28tex yarn respectively as an example, calculate the output of the two spinning machines respectively

(1) Autocoro360 rotor spinning machine

Setting: speed of opening roller: 7500rpm, number of fibers in the surface section of opening roller: 15, twist coefficient: 380

Carding roller diameter: 65mm;

Sliver weight: 22.5g/5m;

Average linear density of fed fibers: 1.82dtex, average length of fed fibers: 24.0mm

calculation process:

Yarn drawing speed = sliver feeding speed * total draft ratio = 0.929 * 160.7 = 149.3 (m/min)

Rotor speed = twist * thread speed = 718*149.3 = 107197 (rpm)

(2) Three-point carding roller type rotor spinning machine

Setting: the speed of the first opening roller: 5000rpm, the speed of the second opening roller: 7500rpm, the speed of the first opening roller: 11250rpm, the number of fibers in the surface section of the third opening roller: 15, root twist coefficient: 380

Carding roller diameter: 65mm;

Sliver weight: 22.5g/5m;

Average linear density of fed fibers: 1.82dtex, average length of fed fibers: 24.0mm

calculation process:

Drawing speed = sliver feeding speed * total draft ratio = 1.393*160.7 = 223.9 (m/min)

Rotor speed = twist * thread speed = 718*223.9 = 160760 (rpm)

Table 1.

Embodiment 2. produce roving yarn

Taking the existing Autocoro360 rotor spinning machine and three-roller rotor spinning machine to produce 60tex yarn respectively as an example, calculate the output of the two spinning machines respectively

(1) Autocoro360 rotor spinning machine

Setting: speed of opening roller: 7500rpm, number of fibers in the surface section of opening roller: 30, twist coefficient: 380

Carding roller diameter: 65mm;

Sliver weight: 22.5g/5m;

Average linear density of fed fibers: 1.94dtex, average length of fed fibers: 22.8mm

calculation process:

Yarn drawing speed = sliver feeding speed * total draft ratio = 1.980 * 75.0 = 148.5 (m/min)

Rotor speed = twist * thread speed = 490*148.5 = 72765 (rpm)

(2) Three-point carding roller type rotor spinning machine

Setting: the speed of the first opening roller: 5000rpm, the speed of the second opening roller: 7500rpm, the speed of the first opening roller: 11250rpm, the number of fibers in the surface section of the third opening roller: 30, root twist coefficient: 380

Carding roller diameter: 65mm;

Sliver weight: 22.5g/5m;

Average linear density of fed fibers: 1.82dtex, average length of fed fibers: 24.0mm

calculation process:

Yarn drawing speed = sliver feeding speed * total draft ratio = 2.970 * 75.0 = 222.8 (m/min)

Rotor speed = twist * thread speed = 490*222.8 = 109172 (rpm)

Table 2.

Claims (3)

1. the efficient high yield Revolving cup spinning spinning apparatus of three grades of combing rollers: 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: described feeding comprises feed roll motor, three grades of combing rollers to carding agencies; 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 described feed roll motor, three grades of combing rollers are by driven by servomotor.

2. the efficient high yield Revolving cup spinning spinning apparatus of three grades of combing rollers as claimed in claim 1, is characterized in that: three grades of described combing rollers are by the 1st combing roller, the 2nd combing roller and the 3rd combing roller is arranged in parallel forms.

3. the efficient high yield Revolving cup spinning spinning apparatus of three grades of combing rollers as claimed in claim 2, is characterized in that: the rotating speed of described three grades of combing rollers increases step by step, and card wire density increases step by step, and card wire operating angle reduces step by step.