The fly frame takes the thicker draw sliver and drafts, twists, and winds it into a thinner roving package. It attenuates the sliver through multiple drafting rollers that increase in speed, which stretches and thins the material. A flyer inserts twist into the roving to hold the fibers together. The modern Toyoda FL-100 and FL-200 simplex machines have improved since the 1985 FL-16 model, with upgrades like changing from a cone drive system to independent servo motors for more accuracy and control of the drafting and winding process.
INTRODUCTION
The ring spinning will continue to be the most widely used form of spinning machine in the near future, because it exhibits significant advantages in comparison with the new spinning processes.
Following are the advantages of ring spinning frame
• It is universally applicable, i.e. any material can be spun to any required count
• It delivers a material with optimum characteristics, especially with regard to structure and strength.
• It is simple and easy to master
• The know-how is well established and accessible for everyone
: Blow room consists a number of machines used on succession to open and clean the cotton fiber. About 40% to 70% trash is removed in blow-room section
The blow room is must needed type section of a spinning factory where different type of works are done like fibre opening, cleaning and some other further acts which is needed to boost up the yarn quality
You can find the diffences between mechanical and electronical dobby mechanisms in principle in this presentation.
Also , you can reach the details of dobby mechanisms type like as of single , double and negative dobby systems.
The chief function of roving frame is the attenuation of sliver.
To draft the sliver to reduce weight per unit length.
Insertion of protective twist in order to hold the fine strand of sliver.
To make conical or tapper shape of the bobbin.
Wind the twisted roving on to the bobbin.
Winding of roving into a package that can be transported, sorted, donned on ring spinning machine.
INTRODUCTION
The ring spinning will continue to be the most widely used form of spinning machine in the near future, because it exhibits significant advantages in comparison with the new spinning processes.
Following are the advantages of ring spinning frame
• It is universally applicable, i.e. any material can be spun to any required count
• It delivers a material with optimum characteristics, especially with regard to structure and strength.
• It is simple and easy to master
• The know-how is well established and accessible for everyone
: Blow room consists a number of machines used on succession to open and clean the cotton fiber. About 40% to 70% trash is removed in blow-room section
The blow room is must needed type section of a spinning factory where different type of works are done like fibre opening, cleaning and some other further acts which is needed to boost up the yarn quality
You can find the diffences between mechanical and electronical dobby mechanisms in principle in this presentation.
Also , you can reach the details of dobby mechanisms type like as of single , double and negative dobby systems.
The chief function of roving frame is the attenuation of sliver.
To draft the sliver to reduce weight per unit length.
Insertion of protective twist in order to hold the fine strand of sliver.
To make conical or tapper shape of the bobbin.
Wind the twisted roving on to the bobbin.
Winding of roving into a package that can be transported, sorted, donned on ring spinning machine.
Drafting is the creation of a drawing or other graphical representation of a building, mechanical device or other structure for the purposes of determining how the device should be created. Drafting is used as a part of the design and fabrication processes. Drafting can be done by hand or using specially designed computer programs and mechanical drawings.
Drafting arrangement is the most important part of the machine. It influences mainly evenness and strength The following points are therefore very important
Drawframe is one of the important machines in yarn spinning line. It is prepared for combining and drawing slivers and removing card irregularities of textile fibres.
Study on drawing and doubling
Object of Jute Drawing:
1. Straighten the fibers in the sliver.
2. Parallelization of fibers in the sliver.
3. To reduce weight per unit length of sliver by drafting.
4. To reduce the thick and thin places in the sliver.
5. To increase smoothness, luster and strength of sliver by doubling.
6. To remove impurities from sliver.
Function of jute drawing:
1. Drafting the finisher card sliver to a count suitable for feeding the spinning frames.
2. Reduction of weight irregularities by doubling.
3. Straightening the fibers and laying them along the sliver axis so that when they come to be spun on spinning frame they will evenly drafted & twisted to form an acceptable yarn.
Types of Jute Drawing Frame:
According to Faller bar there ae two types of Drawing Frame:
1. Push bar Drawing Frame
a. Orthodox.
b. High speed type.
2. Spiral Drawing frame
a. Single thread types.
b. Double threads type.
c. Triple thread types.
It is power point presentation on belt and chain drive. you can find working and mechanism of chain and belt drive and their advantage and disadvantages.....enjoy.
This slides is all about processing of yarn manufacturing at textile industry of cotton processing mill. Which comprises from fiber stage to fabric stage, plenty of parameters to be considered and certain technical concepts also included.
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June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
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• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
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Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Macroeconomics- Movie Location
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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.
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.
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.
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.
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.
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.