The fly frame takes the thicker draw sliver and drafts, twists, and winds it into a thinner roving package. It performs drafting using three sets of rollers to gradually attenuate the sliver. A flyer inserts twist into the roving as it is wound onto a spindle. Modern fly frames like the Toyoda FL-100 and FL-200 use servo motor drives for more precise control and higher productivity compared to older cone drive systems. The fly frame prepares the roving for ring spinning by drafting it thinner and adding twist for strength and cohesion.

4. Discussion
about

6.  Fly frame is used to convert the draw frame sliver into
a thin material.
 This material contain mild amount of twist.
 Drafting system stretches the draw frame sliver and
make it thin.
 The chief functi0n of fly frame is to attenuation of
sliver.
 Insertion of protective twist in order to hold the
fine of sliver, winding of roving into a package.

7. Q: Why the draw sliver is not
direct used in ring machine ?

8. ANSWER:
There are two main reasons:
The first reason is related to the required draft. The
draw sliver is to thick, untwist strand that tends to
be hairy and to create fly. The fine twisted roving is
better to this purpose.
The second reason is that draw frame can represent
the worst conceivable mode of transport and
presentation of feed material to the ring spinning
frame.

9. Main objectives
DRAFTING
TWISTING
WINDING
Main objectives

11. CREEL:
creel is used to guide the sliver. creel
portion is present above the can.
 Creel help the sliver on their way to the
drafting arrangements without any
disturbance.

12. GUIDE ROLLER:
Guide roller are used to guide the
sliver.

13. SLIVER GUIDE:
These are also used to guide the sliver.

14. CONDENSER:
condenser are used to
condensing/pressing the sliver.
The purpose of condenser is to bring
the fiber strand back together again.

15. PRESSURE ARM:
pressure arm is use to give pressure onto
the material.

16. BACK PAIR OF DRAFTING
ROLLER:
The drafting start from these roller.
The top back roller are negatively driven.
The bottom back roller are positively
driven.The dia: of back bottom
roller is 28mm
The dia: of back top roller is 28mm.

17. MIDDLE PAIR OF
DRAFTING ROLLER:
The main drafting occur in this region.
The speed is greater than back pair of
roller.
The diameter of these rollers are 28mm

18. FRONT PAIR OF
DRAFTING ROLLER:
The further drafting occur in this region.
The speed of these pair of roller is
greater than the middle pair of roller.
The dia of these rollers are 28mm.

19. CRADLE:
 cradle are used to give proper tension to the upper
and bottom rollers. for proper guidance of
material.

20. SPACER:
 The main function of distance clip are to
maintain sufficient distance between top
and bottom aprons to attenuate the
strand properly.

21. APRONS:
 The apron co-operate each other to guide and
transport the fiber during drafting.

22. DRAFTING PRESSURE:
The top roller must be pressed with
relatively high force against the lower
roller to ensure guidance of the fibers.
Pressure in the range 100 to
250N(300N)Per roller(shaft)and they
are dependent upon raw material and
volume.

23. drafting pressure

24. RUBBER COT:
cots are made of rubber or synthetic
material and are mounted on top rollers.

25. TOP CLOTH ROLLER:
 It is used to clean the rubber cot rollers.

26. FLYER:
 The flyer insert twist; each flyer rotation create one
turn in the roving.
 In the final analysis therefore, since the flyer
rotation rate are held constant, twist per unit
length of roving depend upon the delivery rate.

27. PRESSER ARM:
The arm has to guide the roving from the exit of
the flyer leg to the package.

28. SPINDLE:
The spindle is steel rod of circular cross-
section with its dia reduce at the top.
The slot in which the flyer pin is mounted.
The dia of spindle also reduce
at the bottom and takes shape of
tapered cone.
Angle of tapered is 80-90
Degree.

29. ROVING HOLDER:
Roving
holder is used to fix the roving bobbins.

30. ROVING RAIL:
 Roving rail moves up and down to wind the roving
on the bobbin.

31. Roving bobbins

32. NEW DEVELOPMENT
IN TOYADA SIMPLEX
MACHINE FL-16 IS FL-
100 &FL-200

33. SIMPLEX MACHINE
TOYADA(JAPAN)
FL-16 FL-100
 Model of 1985
 No: of spindles are120
 Cradle radius 31.5*40mm
 Size of feeding can
508(20”)*1321(52”)mm
 Fiber type
cotton, syenthetic,blended.
 Processing fiber 22-40mm
 Total draft 332
 Model of 1996
 No: of spindle are 144
 Cradle radius34.5*40mm
 Size of feeding can
500(20”)*1150(45”)mm
 Fiber type combed or carded
 Processing fiber up to 38
 Total draft 348mm

34. MAIN DIFFERENCE IN
FL-16 AND FL-1OO IS
DRIVING SYSTEM
The fl-16 is driven through cone
drive system.
And the modern fl-100 is driven
through servo drive.

35. CONE DRIVE SYSTEM:
 The tensile force required to induce movement of
belt is exerted by weight.
 If the ratchet wheel is fewer teeth inserted, then
the belt is shifting in large steps i.e it progresses
more rapidly or vice versa.
 Shifting of belt is under the control of the ratchet
wheel .after each stroke ratchet wheel is permitted
to rotate by a half tooth.
 The variation in bobbin speed originates from the
cone drum. When the builder motion shifts the
belt, the rotation rate of lower cone is changed.

36. DIAGRAM OF CONE DRIVEN
SYSTEM

37. SERVO MOTOR SYSTEM:
 . The independent three-motor drive established in
the FL100 has evolved and developed into a four-
motor drive, and the latest in servo technology and
dramatically improved CPU performance provides
even greater accuracy and control.
 The FL200 demonstrates outstanding
performance in every aspect of productivity and
roving quality as a result of synergy with its high-
performance tension controller.

38. DIAGRAM OF SERVO MOTOR
SYSTEM