The simplex machine takes drawn sliver as input and produces roving as output. It attenuates the sliver through drafting to make it thinner, imparts a small amount of twist, and winds the roving onto bobbins. The main functions of the simplex machine are creeling, drafting, twisting, building, winding, and doffing. It prepares the sliver for further processing by making it thinner and adding some twist to produce a roving that is suitable for input to the next stage.

1. SIMPLEX
Presentation on

2. CONTENTS:
INTRODUCLTION
OTHER NAMES OF SIMPLEX MACHINE
MANUFACTURERS OF SIMPLE MACHINE
OBJECTS OF SIMPLEX MACHINE
MACHINE PARTS OF SIMPLEX
FUNCTIONS OF SIMPLEX MACHINE
MATERIALS FLOW IN SPINNING
CONCLUSION

4. Simplex is the machine where the sliver is subjected to
one or more attenuating process and the attenuated sliver
receives a small amount of twist and is then wound on
bobbins suitable for creeling at next process.
SIMPLEX

5. Simplex machine is situated after drawing frame.
Here, the input is Drawn sliver and output is roving.
There are two types of simplex machine :
1. Flyer leading machine.
2. Bobbin leading machine.
About 99% mills use bobbin leading process.

6. Other names of simplex machine:
 Fly frame
 Roving frame
 Speed frame

7. MANUFACTURERS OF SIMPLEX MACHINE:
Rieter - Switzerland
Toyota - Japan
Lakhsmi machinary works – India
China textile machinary works
Marzoli - Itali

8. Objects of simplex :
The main Object of simplex machine is the
attenuation of sliver.
• Creeling: to feed the sliver by the help of
several rows of driven rollers to the machine.
• Drafting: to reduce the size of the strand.
• Twisting: to impart necessary strength.

9. • Laying: to put the coils on the bobbins.
• Winding: to wind successive layers on the
bobbin at the proper rate of speed.
• Building: to shorten successive layers to
make conical ends on the package of roving.
• Doffing: To replace an empty bobbin at the
place of full bobbin.

10. Machine Parts:
• Creel
• Guide
• Drafting zone [three over three]
• Bobbin
• Bobbin rail
• Flyer
• Spindle
• Apron
• Separators
• Guide roller
• Sliver guide
• Drafting roller
• Motor

12. Fig: Flyer Fig: Bobbin
GUIDE ROLLER SLIVER GUIDE

13. CREEL
MOTOR

14. Functions of simplex :
Creeling: Creeling is the first function of simplex frame
arrangement. By the creeling, small amount of draft is applied
to the drawn sliver.
Drafting: Attenuation of drawn sliver to produce
required amount of roving by drafting. Roving is thinner than
sliver for this drafting process.
Twisting: Small amount of twist is inserted in the
drafted stand of fibres by the twisting. Twist level depends
upon flyer speed at delivery speed.

15. Building: Build the roving on to bobbin such a form which will
facilate unwinding, handling and transfer to the next process.
Winding: Twisted roving is wound on the bobbin by the
winding process.
Doffing: Doffing is the process of replacing the full bobbin by
an empty bobbin.
Laying : Lay refers to the arrangement of the roving coils
wound around the bobbin in any given layer.

16. Materials flow in spinning
Carded yarn manufacturing:
Combed yarn manufacturing:
STAGE MACHINE INPUT MATERIAL OUTPUT
MATERIAL
PACKAGE
ROVING SIMPLEX DRAWN SLIVER ROVING ROVING BOBBIN
STAGE MACHINE INPUT
MATERIAL
OUTPUT
MATERIAL
PACKAGE
ROVING SIMPLEX POST COBER
DRAWN SLIVER
ROVING ROVING BOBBIN

17. Fig: SIMPLEX MACHINE

18. CONCLUSION:
Spinning is a major part of the textile industry. Spinning is a
process in which we convert fibers by passing through certain
processes like Blow room, carding, drawing, simplex, ring
frame. Draw sliver is to thick , untwist strand that tends to be
hairy and to create fly and it is not suitable to feed into the
ring frame directly to produce yarn. The fine twisted roving is
better to this purpose.