Discussion

about

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.

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

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.

Main objectives

DRAFTING

TWISTING

WINDING

Main objectives

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.

GUIDE ROLLER:Guide roller are used to guide the

sliver.

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

CONDENSER:condenser are used to

condensing/pressing the sliver.

The purpose of condenser is to bring the fiber strand back together again.

PRESSURE ARM:pressure arm is use to give pressure onto

the material.

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.

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

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.

CRADLE:

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

SPACER:

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

APRONS: The apron co-operate each other to guide and

transport the fiber during drafting.

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.

drafting pressure

RUBBER COT:cots are made of rubber or synthetic

material and are mounted on top rollers.

TOP CLOTH ROLLER:

It is used to clean the rubber cot rollers.

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.

PRESSER ARM:The arm has to guide the roving from the exit of

the flyer leg to the package.

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.

ROVING HOLDER:Roving

holder is used to fix the roving bobbins.

ROVING RAIL: Roving rail moves up and down to wind the roving

on the bobbin.

Roving bobbins

NEW DEVELOPMENT

IN TOYADA SIMPLEX

MACHINE FL-16 IS FL-

100 &FL-200

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

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.

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.

DIAGRAM OF CONE DRIVEN SYSTEM

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.

DIAGRAM OF SERVO MOTOR SYSTEM