Basic features of auto winders

By Gurumurthy.B.R

E-mail: brgmurthy@live.com

Maurata winding machines

Schlafhorst autoconers

• Winding is one of the most important operation, which is mainly occurred in spinning section.

• The creation of large yarn packages that can be easily unwound, is called winding.

• This makes using the yarn on subsequent machines both easier and more economical.

• Three zones of winding:

1. Unwinding zone

2. Tension and clearing zone

3. Winding zone

• To prepare the bigger package from ring bobbin.

• To remove spinning faults.

• To wax the material.

• To improve the quality of yarn

OBJECTIVES:

There are two types of winding

1.Spindle drive: Where the spindle upon which the package is placed is driven directly.

(a) Constant speed winder

(b) Variable speed winder

2.Friction drive: where the spindle upon which the package is placed is free to rotate and package is driven through friction by contact with a driven drum.

TYPES OF WINDING

PARTS OF WINDING MACHINE

• CRADLE: Its function to provide setting to cone having

package holders, it lies on upper part of machine on drum.

• Drum: It a polished surface metallic drum slightly cone

type .It has cut marks or grooves cut in to it at its surface to help the cross winding of packages.

• Magazine:

Magazine is the main component

of the autoconer machine its

function is to hold the cops

for winding its capacity lies up to 9 cops.

• Tension assembly: Tension assembly provides sufficient tension to

the yarn during unwinding from cope to winding on to cones.

• Yarn clearer: Its function is to removes the faults

such as thin and thick places,

neps, hairiness according to the

set value.

• Waste suction pipe: During yarn cutting and splicing it sucks the waste

yarn.

• Bobbin plate: The function of plate is to rotate the bobbins one

by one.

• Bobbin holder:

It is a disk type wheel ,its functions is to hold the filled bobbins for unwinding process.

• Wax motor: Its function is to run wax bush continuously.

• Wax bush: To provide smooth surface to yarn wax is applied

especially to the yarn intended for knitting, the function of wax bush is to apply wax to yarn to make its hairs sticky.

• Suction mouth: When ever yarn breaks during

winding the package move in

opposite direction with slow

speed during that time it sucks

the broken yarn end from the

package and take it for splicing.

• Retie pipe: It take the yarn end from bobbin toward splicing

mechanism.

• Splicer: The splicing mechanism performs

the knot free joining of the two yarn

ends after yarn breakage.

Now a days air splicing is used.

• Dust removal unit: It collects the dust and fiber fly.

• Traveling cleaner: It moves from one end to another

end of machine to remove and

suck the dust ,fly and other

contaminant particles and

keeps winding unit clean.

WORKING PRINCIPLE

Winding process should be accurate for accelerate the next fabric manufacturing process. winding process should fulfill the following requirements……..

• Winding process should be easy.• Characteristics of the yarn should not be change• Winding process should be economical.• winding faults should be minimize.• Yarn package size and shape should be

suitable.

REQUIREMENTS

•Yarn package should be cheap in cost .•Avoid excess in looseness or tightness.•Exact package hardness.•In winding, yarn knots should be smaller in size and amount of knots should be minimum.

In auto cone department the humidity and temperature are maintained according to the requirements throughout the year.

Normally ranges are:

humidity% 55~80%

temperature 22~39.5℃

ATMOSPHERIC CONDITIONS OF AUTOCONE DEPARTMENT

If winding tension is selected properly, the following tensile properties are not affected

• tenacity• elongation• work- to- break

But excessive tension in winding will deteriorate the above said tensile properties.

Schlafhorst AG – basic features

• Machine model- Autoconer type – RM for processing of spinning bobbins

• Machine size – upto 60 winding heads• Machine arrangement – single-sided• Spindle – 320mm• Type of winding (Random/Precision) –Random

winding

• Yarns processed - single and plied yarns of natural and man-made staple fibers, 2 to 100 Ne

• Package destination (dyeing, weaving, knitting) – warping, weaving, twisting, knitting and dyeing

• Winding(speed m/min) – Mechanical up to 1500-2000 m/min

• Types of feed package(spinning bobbin,etc.) – spinning bobbins

• Feed package dimensions(length, dia-mm) – • Bobbin length: 180-360 mm• Bobbin diameter : 72mm(max) • Supply package type(cylindrical,conical,etc) –

Cylindrical or conical upto 5o 57’

• Supply Package diameter(mm) – 320mm • Supply Package traverses – 3”,4”,5”,6”• Supply Package weights – depending on the

count of the yarn• Power consumption per spindle(kW) : 0.25-

0.3KW• Spindle drive – per spindle

• Speed control system : continuously adjustable • Anti-patterning device – Electronic anti-

patterning • Diameter controlled stop motion : yes • Yarn length measuring(standard, optional) –

yes, standard • Yarn joining(splicing or knotting) - standard,

airsplicer, option: injection splicer ,knotter

• Auto doffing features present • Production monitoring system present • Quality monitoring system with spindle

identification • Electronic yarn clearer, bobbin dust removal

system, travelling cleaner, multi-jet blowing device

The aim of the modern automatic winder is to make the wound package as uniform as possible along with achieving higher production, better quality, and lower power consumption per kg of product and flexibility.

CONCLUSION