India received 12 august 1992 the new spinning technologies such as rotor, air jet and friction spinning have tremendous potential for hi gher productivity. However to get the optimum benefits from this technology, the machine parts and process parameters have to be properly chosen taking into account the raw material. Rieter is the only supplier worldwide to cover spinning preparation processes as well as all four. Calculation of draft and twist in ring spinning pakistan textile. Rieter is the worlds leading supplier of systems for shortstaple fiber spinning.
It resists forces that try to change the direction of its spin axis. Calculate the tpi on simplex if the diameter of back roller is 1516, rpm of b. It hold the bobbin, somewhat loosely but tight enough to prevent slippage. Commonly used units in this system of measurement are. Fabric weight calculation in gsm 52362 knitting terms and definition 35119. The spindle is the main part of a ring frame which helps in twisting, winding simultaneously. To improve the productivity of ring for 9 combed wool and 24 carded count the obtained results was ring frame efficiency percentage plotte d in figure no. Pdf improvement of overall equipment efficiency oee of. Calculation of twist in ring spinning by changing the speed of the main pulley and adjustments in the twist change and auxiliary twist change gears wide range of twist can be achieved. Ring and rotor openend spinning are quite popular for spinning cotton and cotton blends. Systems of count measurement there are two systems for the measurement of count. In 1830, another american scientist, jenk, contributed the traveler rotating on the ring.
Ring spinning frame an overview sciencedirect topics. Rengasamy et al analysis of spinning tension in ring spinning 441 pin of the probe, the pressure applied by the yarn causes a change in the voltage which is proportional to the yarn tension. Meditation ring spinner ring spinning ring anxiety ring worry ring boho ring spin ring statement ring bjs002. An overview of ring spinning machinering frame textile. A statistical model is developed for predicting the likely end breakage rate in ring spinning. Silver spinner ring spinning ring meditation ring designer ring single band ring handmade ring handmade jewelry thumb ring fidget ring devanshh. Hence now a days area of focus is towards energy consumption at load end and by optimizing the efficiency of the motor. Basic formulas used in spinning process indian textiles.
There are many methods or mechanisms for spinning such as ring spinning, rotor spinning, airjet spinning, friction spinning and air vortex spinning. A speed frame speed frame lf4200 series the technological requirements of speed frame are attenuation of the sliver twisting of the drafted strand winding the twisted roving on a bobbin speed frame lf4200 series is incorporated with stateoftheart technology ensuring higher production level. The two fixed pins of the probe were removed to avoid twist blockage to the spinning zone and consequently thread breaks. Machine efficiency of up to 99% is achieved in mill operations. Ring frame converts the roving bobbin into the yarn.
After a calculation, peter thinks that would be an insignificant effect. Production calculation of ring frame textile calculation. Ring spinning is a method of spinning fibers such as cotton. In this paper a possible mechanism of end breakage is reported.
Eng june, 2014 transient solutions of the ringspinning balloon equations. Jun 02, 20 spinning calculations conversion of weight units o 1kg 2. The yarn loop rotating rapidly about a fixed axis generates a surface referred to as balloon. If we notice, we will see that the cotton fiber s are converted into carded yarn, combed yarn and rotor yarn. Ring spinning processing blending both manual and automated systems can be used.
Calculation of draft in ring spinning it is possible to achieve very high range of draft and twist on modern long spinning frames. The ring spinning machine is used in the textile industry to simultaneously twist staple fibers into yarn and then wind it onto bobbins for storage. Yarn countsliver hank yarn count is the numerical expression of yarn, which defines its fineness or coarseness. Ring spinning machine different parts of ring frame. Constants and calculations textile spinning scribd. Among them ring, rotor and airjet spinning are mostly used. Rotor spinning operates with very high efficiency, significantly above that of a ring spinning line. Major machinery manufacturers of the world are marketing modern highly. Eng june, 2014 transient solutions of the ring spinning balloon equations. And calculations textile spinning free download as pdf file.
Nov 08, 2017 rotor spinning operates with very high efficiency, significantly above that of a ring spinning line. Some important spinning production calculations are mentioned in the following specially about spinning production formula. If the machine runs at 9% efficiency and twist multiplier is 4. The resulting angular acceleration is measured using the slope of a graph of angular velocity versus time. Calculate the length of yarn with ne 802 and weight 4. Measurement of rotational inertia ring and disc with. Jul 11, 2018 the ring spinning is the most widely used form of the spinning machine due to significant advantages in comparison with the new spinning processes.
Calculation of peak yarn tension during ringspinning. Stopping the machine to remove packages, as on ring spinning machines, does not occur in rotor spinning. Lakshmi machine works limited offers the following product in ring spinning system. Prepare the production plan of a spinning mill with the given statically data while the yield age is 82 %, bale wt. Not only the total number of ring spinning or winding machines is. An overview of ring spinning machinering frame textile learner.
Speed frame production calculation textile study center. There are various types of spinning methods for producing various types of yarn. The rieter manual of spinning volume 17 textile study. The open state of tufts of ingeo pla fiber makes for easy bale skimming, with low increments 23 mm per slice. The ring size of the butt guide should generally be at least 12 the diam eter of the reel spool od and the required height is usually attained by utilizing fairly high frame guide styles. Calculation on symmetry shows that the equations are invariant under the galilean transformations, scaling. The ring spinning machine was first invented in 1828 by the american thorp. Feb 28, 2015 roving frame machine, roving frame machine pdf, roving frame pdf, roving frame calculation, roving frame machine process, roving frame spinning, roving frame process. Openendrotor spinning an overview sciencedirect topics. Ring spinning is a method of spinning fibres, such as cotton, flax or wool, to make a yarn. The ring frame developed from the throstle frame, which in its turn was a descendant of arkwrights water frame.
In textile mill, electricity consumption is in increasing trend, due to modernised machines and continuous usage of the equipments in inefficient operating parameters. Ring spinning frame is the last stage in the process of conversion of fibers into yarn. Ring traveller speed in msec spindle speed x ring dia in mm x 3. In a ring frame 30 ne carded yarn is to be spun in which spindle speed is 17000 r. Per scutcher per spinning calculation1 than the fed material. Basic formulas used in spinning process sriyaditha textile.
The range of its surface hardness is between 800850 vickers. The effect of elastane draw ratio, fineness, feedin angle and migration of elastane inside the core yarn was investigated on the structure and elastic recovery of. The butt guide should generally fall between 18 to 22 inches from the spool face on most freshwater type spinning reels and. Effect of elastane denier and draft ratio of corespun.
There have been many development has done in ring spinning machine for the last years but the basic concept remained unchanged. Rotational inertia and torque rotational inertia examples. Possibilities, applications and limitations k r salhotra department of textile technology. A study on energy conservation in textile industry.
The market leader develops and manufactures machinery, systems and components. Calculate production of speed frame in kg8hrs when given. It is clear, however, that automated systems give better, more intimate and controlled blending. Pdf an analysis of spinning tension in ring spinning. This is the renowned ring, so for the frame is named as ring spinning frame. Difference between ring spun yarn and rotor spun yarn. It is a special type of project work as it is an observing and analytical work. Calculations plays very crucial role during the of yarn.
The rieter manual of spinning volume 17 free downloadthe rieter manual of spinning volume 17 free ebook. Calculation of draft and twist in ring spinning textile. Formulas used for yarn spinning production including various yarn numbering system conversions. Spinning is the twisting together of drawn out strands of fibers to form yarn. The strength of a staple yarn is determined by various fiber properties, the yarn structural geometry and the spinning parameters. The title of our project is comparative study on ring, rotor and airjet spun yarn. Ring spinning is a continuous process, unlike mule spinning which uses an intermittent action. Measurement of rotational inertia ring and disc with high.
The attempt at modeling a spinning ring was to assume that the air resistance was the primary cause. Turns per inch of 19 to 20 is generally used by the spinners for spinning of 21 ne warp yarn. Rieter f15 f35 roving frame doffing process original. Aug 29, 2015 speed frame production calculation math 2. Elongation and breaking strength are two important quality attributes of any spun yarn. The energy cost is around 15 % to 20 % over the production cost and it stands next to raw material cost. Ring spinning the basic requirements and functions of a ring spinning frame are. Each method has unique energy needs and its own dedicated process flow.
Ringspinning processing blending both manual and automated systems can be used. Ring spinning machine or ring frame is used to produce required count of yarn from the supplied roving by the drafting. A ring singularity or ringularity is the gravitational singularity of a rotating black hole, or a kerr black hole, that is shaped like a ring. Ring spinning is a system of spinning that uses a ring spinning frame that drafts rovings fibres prepared into loose strands ready for spinning where the fibres have been laid parallel to some extent, twists the yarn, and winds it on the bobbin continuously and simultaneously in one operation. Rotor spinning has established itself as a commercially viable technology with much higher productivity than ring spinning for coarse and medium counts. The roving bobbin taken from roving process is mounted on the ring frame either automatically or manually.
In ring spinning, the roving is first attenuated by using drawing rollers, then spun and wound. Theoretically, the rotational inertia, i, of a ring is given by 2 2 2 2 1 1 i m r 1 where m is the mass of the ring, r 1 is the inner radius of the ring, and r 2 is the outer radius of. Spinning is the first steps of textile product processing. Download the rieter manual of spinning volume1 download the rieter manual of spinning volume2 download the rieter manual of spinning volume 3 download the rieter manual of spinning volume 4. Count is the measure of fineness or coarseness of yarn.
The rieter manual of spinning volume 17 textile study center. The mechanism of end breakage in ring spinning is a complex phenomenon, and is entirely different from the yarn failure mechanism during a tensile test. Ring spinning, the widely used yarn formation technique. Ring spinning the basic requirements and functions of a ringspinning frame are. Different parts and function of ring frame machine. The fiber supply, usually in the form of roving and having a hank range from approximately 0. An analysis of spinning tension in ring spinning article pdf available in indian journal of fibre and textile research 294. The process of making yarns from the textile fiber is called spinning. Effect of elastane denier and draft ratio of corespun cotton. Technology polyester pretreatment printing printing and finishing properties questions reactive dye recycling report research ring frame rotor spinning. Spinning is the process of manufacturing yarn from fiber during ring yarn manufacturing various machines are involved for the production namely blow room, carding, comber, draw frame, speed frame and ring frame.
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