The document discusses the process of auto cone winding. It begins by defining auto cone winding as a type of winding machine that converts ring bobbins into large cones, removing spinning faults. It describes the parts of the auto cone machine like the cradle, drum, magazine, and tension assembly. The working principle involves placing filled ring bobbins in the magazine, unwinding the yarn through tensioning and waxing units, splicing any broken yarns, and winding the yarn onto cones on the drum to form larger packages.

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3.  Auto cone can be defined as “ It is a type of winding machine
in which ring bobbins are converted into large cones with
removing of spinning faults.
 In order to form packages of the right weight for subsequent
processing stages, the winding machine can be fed by ring-spun
yarn bobbins.
 Packages can thus be subdivided according to their shape:
a. Cylindrical
b . Conical, with tapers ranging from 5° 57° to 9° 15°
c . Cones with tapers of up to 4° 20°
 The yarn unwound from the package passes through yarn
tensioning and control systems.
 with the help of a grooved cylinder, yarn is wound evenly
around the large package.
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4.  The yarn enters the recess in the cylinder, thus the rotary
movement of the cylinder corresponds to the translation of the
yarn.
 Winding machines currently have independent heads with
individually adjustable motors.
 A modern winding machine can process yarns ranging from a
count of Ne 2 to finer ones, at a winding speed of 400 to
2000 m/min.
 Further functions of winding are to check the yarn and to
eliminate any faults found. This is done by a process called
“clearing” i.e., by passing the yarn through an electronic device,
known as a yarn clearer which assesses it according to set
parameters (fault section and length).
 If these set values are exceeded the yarn is cut and spliced - a
splice being deemed preferable to a fault.
 Splicing is done using the air-splicing system or the Twin splicer
system.
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5.  The machine is equipped with
a special device to avoid the
winding defect known as
rib boning.
 This problem is caused by
irregular package formation
following the deposition of too
many coils in certain points.
 Basically, the package-holding
arm is made to effect an
oscillating movement both in the
vertical (A) and in the horizontal
(B) planes (see Figure 35.2).
 A modern winding machine
carries out the following
operations automatically;
1. Package doffing
2. Bobbin loading
3. Cone feeding
4. Linkage to spinning frames with
bobbin picking up

6.  Waxing serves to lubricate the
yarn, reducing to a minimum its
coefficient of friction with the
parts. with which it comes into
contact.
 This operation is normally carried
out on yarns destined to be
processed on knitwear machines,
on which smooth running of
yarns is essential.
 Waxing is carried out on the
winding machine, which is
equipped with a positive-drive
adjustable waxing system that
guarantees constant waxing of
the yarn.

7. OBJECTIVES OFWINDING Requirement of atmospheric
conditions of auto cone department
 To prepare a bigger
package (cone) from ring
bobbin with specific length
and weight.
 To remove spinning faults.
 To wax or condition the
material.
 To improve the quality of
yarn.
 In auto cone department
the humidity and
temperature are
maintained according to
the requirement
throughout the year.
Normally ranges are:-
 Humidity%
55~80%
 Temperature
22~39.5°C

8. Parts of Auto cone
Cradle: Its function is to provide setting to cones/packages having
package holders; it lies on the upper part of the machine on drum.
Drum: It is a polished surface metallic drum slightly cone type, having
different diameter at both sides i.e 90 mm on one side and 100 mm on
other side. It has cut marks or grooves cut in to it at its surface to help
the cross winding of packages. Its speed lies in range from 1000 to
2000 rpm.
Magazine: Magazine is the main component of auto cone machine, its
function is to hold/feed the cops for winding, its capacity lies up to 9
bobbins/cops per magazine. Bobbins are fed to bobbin peg one by one
automatically, when one becomes empty and ejected from peg.
Tension assembly: Tension assembly provides sufficient tension to the
yarn during unwinding from cop to winding on to cones. Due to this
sufficient tension is developed on cones and hence dense packages
can be formed.

9. Yarn clearer: As the spun yarn have various faults i.e thin and thick
places, neps, hairiness, embedded particles of dust & leaves colouring
matters and short and long defects etc .Its function is to remove these
faults according to the given set values on electron touch screen panel to
produce fault free yarn to meet the quality requirements.
Tensor cutter: The purpose of cutter is to cut the yarn whenever required
during winding process.
Balloon breaker: Its function is to break the balloon/control the length of
yarn balloon during yarn unwinding from the cop, because yarn is passes
at high speed during winding operation and hence high tension developed.
Therefore that tension becomes equalized by balloon breaker.
Waste suction pipe: During yarn cutting and splicing it sucks the waste
yarn.
Bobbin plate: The function of bobbin plate is to rotate the bobbins one-by-
one.
Bobbin peg/holder: It is a disk type wheel; its function is to hold the filled
bobbins for unwinding process.
Lower scissor: When bobbin is completed it cut the yarn.
Upper scissor: Its function is to take out yarn from lower scissor toward it
self.

10. Tension dip: Tension dip is employed to give tension at yarn.
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.
Wax motor: Its function is to run wax bush continuously.
Pre-cleaner: Its function is to gauge the yarn according to the requirements of
count for instance; Ne. 16’s gauge =1.2 mm, Ne. 20’s = 1.0 mm & Ne. 30’s = 0.8mm
Center flip: Its function is to provide path during bobbin change when one bobbin is
completed.
Mobile pipe: It sucks the yarn when it is break at the center.
Suction mouth: Whenever 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 to ward splicing mechanism.
Splicer: The splicing mechanism performs the knot free joining of the two yarn
ends after yarn breakage or during any cutting operation for removal of faults.
Hairiness nozzles: Hairiness nozzles are used to reduce yarn hairiness.
Dust removal unit: It collects the dust and fiber fly.

11. Working Principle of Auto
cone
 The filled ring bobbins are placed in magazine and the end of each bobbin
yarn is putted into the suction head of magazine for each spindle. The
cones having some yarn wound upon them are also placed in to the holder
of cradle on each spindle after that the spindle start running, the peg
comes forward under the bobbin and bobbin falls upon it on the bobbin
plate through centre flip. After this the Retie pipe takes the yarn from
finger plate towards the splicing mechanism where it is joined with
another end of yarn which is caught by the suction mouth from cone,
during its reverse movement.
 When unwinding of the yarn from ring bobbin starts it passes through
balloon breaker whose function is to reduce the centrifugal forces acting
upon the yarn, tension and rubbing of yarn with ring bobbin. Position of
the balloon breaker depends upon the count of the yarn, for course count
more height and for fine count less height is required. Yarn tension
imparts great contribution towards package (cone) stability.

12.  After the tensioning unit yarn is passed through the waxing device, this
device operates whenever waxing is required. Quantity of wax depends
upon washer per pin.
 After this waxing unit yarn is passes through slub catcher, when the weight
of the standard length deviates from the standard limits then it cuts the
yarn.
 After slub catcher the yarn is passes through splicing unit to make a knot
free joint of the yarn after each breaking and cutting action. During change
of bobbin, yarn breakage or cutting of yarn the Retie pipe and suction mouth
catch the corresponding ends of yarn and bring them to splicing unit, after
joining the respective scissor cut the remaining yarn end. It should be keep in
mind that before splicing the yarn ends are prepared for splicing/joining by
suction.
 After splicing unit the yarn is passes to cone through drum having grooves in it
for cross winding. When required size of the package is reached spindle stops
automatically and filled package is replaced with an empty one. So, in this way
winding is done.