1、Ring spinning

At resent,the most widely used spinning method in the market, SLIver or ROving after drawing the fiber strip through the ring spindle wire ring rotation introduced, BObbin winding speed is faster than the wire ring, cotton yarn is added to make fine yarn.

Widely used in all kinds of short fiber spinning engineering. The yarn has compact structure and high strength, and is suitable for yarn making, weaving and knitting.

Ring spun, combing process: qing flowers, combed cotton, pre article and the article - and volume - combed article - the head and the second way, roving, spinning, winding and bar

Ring spinning (general comb) process: clear flower - comb cotton - first and second - roving - spinning - winding

2、No came spinning

A method of spinning in which the fibers in a strip are bonded to each other using a binder. After the roving is drawn by the drafting device, the whiskers are sent to the twisting drum, where they are contacted by a thin layer of adhesive from the tank. The fiber strip is transported forward together with a number of rotary small press rollers, one of the small press rollers also makes axial reciprocating motion at the same time, the fiber strip is rubbed into a circular section, and each fiber can evenly contact the adhesive. The circular fiber strips are dried by the heater, and the fibers stick to each other to form yarn. The spinning speed is 2~4 times higher than the conventional spinning method, and the yarn made can be used for weaving.

3、Since the came spinning

A non-traditional spinning method. The two fiber strips are drawn fine by the drafting device, output by the front roller and twisting roller, and closed at the guide hook. In addition to turning, the twisting roller reciprocates rapidly in axial direction to roll the yarn, so that the yarn before and after the twisting roller can obtain the opposite direction of twisting back. The shape of self-twisting yarn is characterized by the reciprocal twisting of adjacent yarn segments, and the altercountry is no twisting.

This spinning method is specially used for multi-strand yarns, such as wool or wool-like chemical fiber products. High quality self-twisting yarns can be directly used for weft knitting, but warp yarns for machine weaving should be used with self-twisting yarns to improve strength.

4、Centrifugal spinning

A high speed centrifugal tank (cup) and a lifting guide tube are used for continuous spinning with twist and winding. Roving after drafting device by the front roller continuous fiber, the yarn guide, guide tube into the high-speed rotary cylinder of centrifugal tank, article yarn under the action of centrifugal force close to the tank wall and turn with the jar, the bottom guide tube between the front roller and the article yarn twisting role, and guide tube under horizontal yarn article lags behind that of the rotational speed centrifugal tank and wind generation.

Elevator guide tube according to certain rule, forming cross winding yarn cake, winding reaches a certain length, front roller article stop output fibers, yarn guide tube rise out of the centrifugal tank, empty bobbin fell sharply to centrifugal tank, yarn hook a hook at the bottom of the bobbin yarn machine, make on the yarn unwinding the bobbin yarn cake, unwinding, remove the full package. Compared with ring spinning, it consumes more power, returns more silk, and is difficult to deal with broken ends. The yarn is rewound to the yarn tube, and the front roller needs to stop spinning, which affects the productivity, so it is rarely used at present.

5、Cap spinning

A spinning process in which a spindle cap and a bobbin are used together to twist and wind the actual yarn. Used for wool and flax. The bell jar type spindle cap is fixed on the top of the spindle, and the bobbin looper is on the spindle. After the roving is drawn by the drawing device, the fiber strip is continuously output from the front roller, and is wound on the bobbin through the guide hook and under the spindle cap. When the bobbin turns, it drives the yarn to turn around under the spindle cap, and the yarn is twisted back continuously. The friction resistance of the spindle cap to the spinning yarn makes the yarn continuously wound on the bobbin. The bobbin rises and falls with the lifting plate according to a certain rule, and the spinning yarn is wound into a certain winding form. The cap spinning method has low spinning tension and less broken ends.

6、Mule spinning

A spinning method that periodically performs the three functions of strip drawing, twisting and winding.

A work cycle is divided into four phases:

The first stage: spinning. The drawing device draws the roving yarn and sends out the fiber strip. The spindle cart moves outward from the drawing device to slightly draw the yarn strip and turn the spindle to twist the yarn.

The second stage: adding. The drawing device and the spindle cart stop, and the spindle turns continuously to complete the twisting of the spinning yarn.

Stage 3: Detour. The drawing device and the spindle cart continue to stand still, the spindle slowly turns in the opposite direction of twisting, and the yarn ring is unwound from the tip of the spindle. The upper forming hook falls to guide the unwound yarn ring, and the lower forming hook rises to tighten the yarn.

Stage 4: Coiling. As the drawing device continues to stop, the spindle cart moves quickly to the drawing device, the spindle turns in the direction of twisting, and the spinning yarn is taken up. The upper forming hook guides the spinning yarn to make it tightly wound and form a certain coiling. The lower forming hook pulls the yarn, which has been replaced by ring spinning.

7、Spinning the yarn from the end

A new spinning method in which the fiber strips are loosened into single fibers and the single fibers are condensed into free-end fiber strips and then twisted into yarn. The condensed fiber strip rotates together with the yarn when twisted, showing a free-end form. Because the fiber strip and the free-end fiber strip are broken, it is also called "broken spinning". There are different methods of forming free-end fiber strips from single fibers, such as airstream spinning or cup spinning, electrostatic spinning, eddy spinning and dust-cage (friction) spinning, among which airstream spinning is the most common. At present, most people refer to free-end spinning as air spinning.

Compared with the conventional ring spinning, it has the following advantages: twisting and winding are separated, the total draft on the air spinning machine is much larger than that on the ring spinning machine, twisting can be implemented at high speed; After twisting, the yarn is directly wound into bobbins, with large volume and simplified process; Reduce the labor intensity of workers and improve the working environment.

8、Rotor spinning

Also known as "cup SPINNING", one of the effective free-end spinning methods, the core of which is a spinning cup, fiber strips are fed between the feed roller and the plate, and are loosened into a single fiber by a small high-speed roller (carding roller). Negative air pressure within the rotor allow the single fiber to add air via pipelines into the rotor, in under the action of the centrifugal force of high-speed rotary cup, along the smooth wall close to the largest diameter rotor of condensing groove, a circular fiber raw head and joint, lead following add flow from the doffing tube into the yarn, also due to the rotor of the centrifugal effect to the condensing groove, Connect the end of the yarn to the fiber strip. When the yarn is drawn out of the spinning cup, the fiber strip leaves the condense groove with the end of the yarn, and is twisted into yarn by the high rotation of the spinning cup at the same time. The yarn is pulled out by the twisting block and the yarn guide tube, and the bobbin is wound into bobbin driven by the groove tube.

Spun staple fiber, the coarse yarn, clean and uniform fiber, yarn twist is more, its shape is different from ring spun, air spinning on appearance is high twist, yarn core is surrounded by a layer of low twist fiber, from axis to the surface of the yarn, the uneven distribution of under tension, air spinning yarn for making more woven corduroy, denim, yarn-dyed flocking and printing, etc.

The process of air spinning: clear flower - carding - first - second - air spinning

9、Electrostatic spinning

One of the free end spinning methods. It is composed of fiber opening, conveying, electrostatic condensation, free end twisting, winding and other technological processes. There are two methods of fiber opening and delivery:

(1) Roller drafting is used as the opening mechanism, and electrostatic field is used for fiber transportation.

(2) The barbed roller is used as the opening mechanism to transport the cotton fiber by air flow.

The electrospun yarn is suitable for weaving quilt cloth, furniture cloth, knitting jacquard tablecloth and curtain cloth and other products; Spinning all kinds of blended yarn, slub yarn and core yarn, can also be made into a unique style of fabric.

10、Vortex spinning

One of the free end spinning methods. The fiber strip IS FED between the FEEDING roller and the feeding plate, and is opened into fiber by the high-speed small roller, and then tangentially enters the static vortex twisting pipe with the air flow through the conveying pipe. The lower part of the vortex twisting tube is connected with the air negative pressure source, and the nozzle is tangentially configured with the inner wall of the twisting tube. Nozzle upward movement of part of the eddy current in the tube by the lower air pressure source is abate, the tangential into fiber twisting tube along the tube wall spiraling, used in stability of eddy current in condensed into rotary fiber ring, joint, doffing yarn following add air flow through the tube, connected with fiber ring under the centrifugal force effect.

The mechanism and operation are simple, spinning speed is very high, there is no fiber lost and little flying, twisting efficiency is low. It is suitable for spinning medium and coarse yarns of pure or blended chemical fiber, and has good effect as fleece and core-spun yarns.

11、Air-jet spinning

A non-traditional spinning method. When the fiber strip is false-twisted after drafting by jet flow, some free fibers at the end of the fiber strip wrap around the fiber strip and spin. There are two kinds of single nozzle and double nozzle, the latter spinning quality is good and stable. The FIBER STRIP IS DRAWN BY the drafting device, output from the front roller, through the first nozzle, the second nozzle, the yarn guide hook, the yarn guide roller, and wound into a bobbin by the groove drum. The vortex rotation direction of the two nozzles is opposite, and the vortex strength of the second nozzle is greater than that of the first nozzle, so that the twist back on the yarn between the two nozzles can overcome the torque and resistance imposed by the first nozzle on the yarn, and pass to the clamp mouth of the forward roller. The free tip of the twisted fiber at the periphery of the fiber strip is influenced by the first nozzle and wrapped on the fiber strip in the opposite direction. The part of the yarn core that is twisted rewinds through the nozzle, while the wrapped fiber gets tighter and tighter during the reverse rewinds.

Compared with ring spinning, it has the advantages of high yield, large rolling and short working procedure. Suitable for spinning all kinds of staple and filament core-spun yarns, processing combined medium and long chemical fiber yarns. Japan Murata for jet spinning experts, its products are MJS,MVS, RJS. Air - jet spinning yarn shape like air - flow spinning, feel hard, good hair.

Air-jet spinning process: cleaning - carding - pre-drawing - drawing - combing - combing - first drawing - two drawing - air-jet spinning

12、Friction spinning

A method of producing a twist of yarn by means of friction between the surface of a part and the surface of a strip. More mature dust cage spinning.

13、Cage spinning

Also known as (Dreve spinning) a friction spinning, mostly known as friction spinning, is a free end spinning method. Principle is fiber by cutting roller release into single fiber, by air, flows to the surface of a rotary cage, a little spacing between cage, rotary speed and steering, same as cage rotation fiber layer reach two cage triangle, the two cage surface rolling twisting yarn, the yarn guide hook doffing roller, directly by winding around the bobbin. Suitable for spinning coarse yarn, also can clip long silk core-spun yarn, usually thick fabric or various blankets.

The picture

Introduction to various new spinning systems

With the continuous development of spinning technology, a variety of new spinning systems have been introduced recently:

(A)RINGCAN: This system does not require the roving process of ring spinning, spinning directly from sliver.

Principle: SEND THE STRIP FROM A PAIR OF NARROW CONVEYING SYSTEM TO THE DRAFTING AREA BY A BUCKET, AND THE STRIP ENTERS IN a SMOOTH AND FLAT state, AND THE REAR DRAFTING DISTANCE CAN be TIGHT, THE MAXIMUM DRAFTING is 3.5-4, IN the case of NO twist, THE TOTAL DRAFTING can be 3-4 times higher, VERY THIN COMBING STRIP will NOT HAVE ACCIDENTAL drafting.

COMFORSPIN: Developed by RIETER, this system is called compact spinning in mainland China, also known as short range spinning.

Principle: AFTER the main drawing, the air flow compression zone is added. When the coarse drawing strip is compressed, the edge fibers are also twisted into the yarn shaft to reduce hairiness, and the fibers are parallel to each other. The strength of the yarn is generated, so that the strength and elongation of the yarn are increased, the triangle area is reduced, and the yarn twist is also well transferred.

Its advantages are: less hair, good appearance of the fabric, less wool during production, improved production environment, high strength and elongation.

(C)COMPACT yarn: Zinser-Air-Com-TEX700 uses AIR flow to pull slivers out of the three drafting roller systems and concentrate them on a surface with many holes. It uses AIR pressure to compress slivers, reducing the width before twisting, changing the yarn diameter ratio, and eliminating the spinning triangle.