The roving is drawn and drawn to the required fineness, and twisted to form a spun yarn with a certain twist and strength, which is wound on the bobbin.
1.What is a Ring Spinning Frame?
2.Process of Ring Spinning Frame
3.How the spinning frame works?
4.Recommended Ring Spinning Frame
-TONGDA Ring spinning frame FA-1568
-TONGDA Ring spinning frame FA-506
1. What is a Ring Spinning Frame?
Ring spinning has significant advantages over the new spinning process and is the most widely used form of spinning machinery. Ring spinning is a method of spinning fibers such as cotton, linen or wool into yarn. The roving is drawn and drawn to the required fineness and twisted to form a spun yarn with a certain twist and strength and wound on the bobbin.
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2. process Of Ring Spinning Frame
(1) Creeling
By this process the drawn sliver is introduced to the draft zone from sliver can manually.
(2) Drafting
Drafting the roving to the required characteristic.
(3) Twisting:
Make the sliver have certain strength, elasticity and luster.
(4) Winding:
Winding of spun yarn into cops for ease of transportation and post-processing.
(5) Building:
By this process the roving is wound in full length of the bobbin in such a form which will facilitate handling, transfer and feeding to ring frame.
(6) Doffing:
Doffing is to replace an empty bobbin at the place of fully wound bobbin.
3. How the spinning frame works
A ring frame was constructed from cast iron, and later pressed steel. On each side of the frame are the spindles, above them are draughting (drafting) rollers and on top is a creel loaded with bobbins of roving. The roving (unspun thread) passes downwards from the bobbins to the draughting rollers. Here the back roller steadied the incoming thread, while the front rollers rotated faster, pulling the roving out and making the fibres more parallel. The rollers are individually adjustable, originally by mean of levers and weights. The attenuated roving now passes through a thread guide that is adjusted to be centred above the spindle. Thread guides are on a thread rail which allows them to be hinged out of the way for doffing or piecing a broken thread. The attenuated roving passes down to the spindle assembly, where it is threaded though a small D ring called the traveller. The traveller moves along the ring. It is this that gives the ring frame its name. From here the thread is attached to the existing thread on the spindle.
The traveller and the spindle share the same axis but rotate at different speeds. The spindle is driven and the traveller drags behind thus distributing the rotation between winding up on the spindle and twist into the yarn. The bobbin is fixed on the spindle. In a ring frames, the different speed was achieved by drag caused by air resistance and friction (lubrication of the contact surface between the traveller and the ring was a necessity). Spindles could rotate at speeds up to 25,000 rpm, this spins the yarn. The up and down ring rail motion guides the thread onto the bobbin into the shape required: i.e. a cop. The lifting must be adjusted for different yarn counts.
Doffing is a separate process. An attendant (or robot in an automated system) winds down the ring rails to the bottom. The machine stops. The thread guides are hinged up. The completed bobbin coils (yarn packages) are removed from the spindles. The new bobbin tube is placed on the spindle trapping the thread between it and the cup in the wharf of the spindle, the thread guides are lowered and the machine restarted. Now all the processes are done automatically. The yarn is taken to a cone winder.
4. Recommended Ring Spinning Frame :
(1) TONGDA Ring spinning frame FA-1569
FA-1569 Ring Spinning Frame is a new machine designed and developed by Tongda Textile Machinery Co.,Ltd. Feeding a single simplex roving.it is suitable for spinning cotton .synthetic fibers and their blends to produce weaving and knitting yarns. The spinning processes can be set by means of man-machine dialogues through a Touch Screen Panel,and an interface or computer network is ready for expanding.The Autodoffer system can be an option for customer to make choice.High speed.high efficiency,good quality and good stability and reliability are it's obviously outstanding characters.lt can be linked with Auto-conerto become a Ring-coner.
(2) TONGDA Ring spinning frame FA-506
FA-506 Ring spinning frame machine series are made from the leading design proposal,advanced manufacturing methods and perfect special parts and components. They ensure high quality yarn spring. The machine features convenient operation and easy to management due to its high automation. It is suitable for spinning of cotton and synthetic fibres or their blends to produce weaving or knitting yarns.
Download catalogue :
TONGDA Ring spinning frame FA-1568
TONGDA Ring spinning frame FA-506
