The document provides information about the key components and processes involved in ring frame spinning. It discusses:
1) The main objectives of a ring frame which are drafting, twisting, and winding the yarn onto bobbins. It then explains the drafting, twisting and winding processes in more detail.
2) How the speed and surface speed of the front, middle, and back rollers are calculated based on various machine parameters.
3) Details about the drafting system, thread guide, traveller components and classifications, and ring and traveller systems like the orbit system.
4) New developments like automated drafting using individual motor drives, automatic doffing using a doffing beam and servo disc belt,
Basically this presentation only contains secondary motion in loom i.e the let-off motion in loom and the take -up motion in loom and it also contains anti crack motion in loom .
Basically this presentation only contains secondary motion in loom i.e the let-off motion in loom and the take -up motion in loom and it also contains anti crack motion in loom .
: 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
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
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
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
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
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.
A chain is a power transmission element made as a series of pin-connected links. The design provides for flexibility while enabling the chain to transmit large tensile forces.
Today chain drives play an important part in many agricultural machines such as hay balers, corn pickers, combines, cotton pickers, and beet harvesters.
Another benefit is that chain drives are capable of transmitting a large amount of power at slower speeds.
However, chain drives require better shaft alignment and more maintenance than V-belt drives.
Method of Lubrication: The American Chain Association recommends three different types of lubrication depending on the speed of operation and the power being transmitted.
The compact spinning is a process where fiber strand drawn by drafting system is condensed before twisting it.Following methods are used by machine manufacturers to condense the fiber strand.
1. Aerodynamic condensing.
2. Mechanical condensing.
3. Magnetic condensing.
Compact spinning has a promising future because of the higher production and improved quality of compact yarns
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
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Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
3. Objects of ring frame:
• Drafting
• Twisting
• Winding and Building
4. Drafting:
Attenuate the roving until the required size is obtained.
Twisting:
Making the fibres to spiral around each other about a central axis
and bind themselves together to get desired strength.
Winding and Building:
Coiling the twisted yarn delivered by the drafting rollers around the
bobbin and laying them build a required shape of bobbin.
16. How the current drafting system developed
Casablanca drafting
Top arm drafting
1st generation 2nd generation
17. Casablanca A500 drafting represents the first development to improve the
control over floating fibers.
Aprons
Middle roller
18.
19.
20.
21. Top arm drafting represents a major
break through in improving the quality
and performance of drafting.
Most of the problems that encountered
with Casablanca drafting are overcome
by Top arm drafting by adopting
pendulum system of central arbour
guidance.
The top rollers are held at the middle
of arbour by means of a saddle, which
are weighted by heavy-duty springs.
22. Advantages of the Top arm system
• Self-alignment of top roller in relation to bottom
roller results on better grip over fibres.
• Higher drafts are achievable because of better control
over fibres.
• About 1-1.5% units better U% and 15-20% reduction
in imperfections are obtained by conversion to top
arm drafting.
• Heavier weighting by the use of better grade springs
reduces slippage.
29. Parts of a Traveller
3
5
7
4
7
9
6
1
2
8
1 - Inner traveller width
2 - Height of bow
3 - Yarn passage
4 - Wire section
5 - Traveller – ring contact surface
6 - Angle of toe
7 - Toe
8 - Opening
9 - Upper part of traveller bow
30. Traveller classification
Travellers are required to wind up yarns of different types of variations.
This includes coarse/fine, smooth/hairy, strong/weak, natural/man
made etc.
Variances in traveler type to suit above changes of yarn type
• Form
• Mass
• Finishing process
• Wire profile
• Size of yarn clearance
31. Form of Traveller
oThe traveller must be shaped to correspond exactly with the ring in the contact
surface.
oThe bow should be as flat as possible in order to keep centre of gravity low and
improve smooth running.
•low-bowed traveller reduced
yarn clearance
• low centre of gravity for fine
cotton yarns for compact
yarns
• Optimum fibre lubrication
• low to medium bowed
traveller
• small to medium yarn
clearance for fine to medium
fine cotton yarns
•Normal fibre lubrication
• high-bowed traveller
• large yarn clearance
• for medium to coarse cotton
yarns, also suitable
for blends and synthetics
• Reduced fibre lubrication
33. Traveller Friction
Traveller has to regulate the spinning tension, this has to be high enough
to keep the thread balloon stable but not too high.
The fibres protruding from the yarn
body between ring and traveller are
crushed and form a steady regenerating
lubrication film.
34. Wire sections
This influence yarn quality, the running behavior and the life
time of the traveller.
•Used only for cotton
•Improves the traveller lubrication
Flat
Half round
•For synthetics and blends.
•Prevents fibre damage.
35. udr - Ultra half round
fr - Flat/round
drh - Half round high
•For cotton and blends.
•Through an enlarged contact surface on the
ring raceway, highest performances are
possible.
•The mostly used wire section.
•For Core yarns with PES core, acrylics and
delicate fibres.
•f-profile at the toe increases the ring
contact.
•r-profile for fibre protection in the yarn
passage.
•Special profile for SU travellers.
•Application for Viscose and Polyester.
36. Finishing Treatments
Advantages of the additional finishes on travelers
•Higher traveller speeds
•Longer traveller life
•Improved running behavior and as a result a more consistent yarn quality
•Rust/oxidation protection (specially Starlet )
High performance travellers are only available with a finishing treatment
37. Finishing Treatments….
STARLET-Electrolytic surface treatment
(special nickel plating)
A nickel coating is applied with a special process.
Low friction values in the yarn passage prevent
fibre damages.
Optimum resistance to corrosion.
38. PYRIT
PYRIT treated travellers have a enriched steel
structure through additional components.
The wear resistance is considerably increased.
(Improves the running behaviour and
guarantees a more consistent yarn quality.)
At high speeds the traveller service life can be
increased by more than 100% compared to
travellers with conventional finish
Finishing Treatments….
40. Orbit Ring/Traveller System
The special features of the Orbit System are
• Large contact area between traveller and the
ring. This reduces the specific pressure.
•Optimum heat dissipation traveller to the
ring.
The Orbit ring/ traveller system (patented world-wide) is designed for
spinning at top speeds whilst producing best yarn quality.
41. Advantages of the “Orbit System”
• Increase in speed and production
• High dynamic stability in traveller running
• Reduction of yarn breakage
• Improved and more consistent yarn quality
• No thermal damage when processing synthetics
Applications
− Cotton combed
− Polyester/cotton blends
− Polyester 100%
Yarn counts : Ne 30 to 60 recommended
(finer and coarser both are possible)
42. SU Ring/Traveller System
Design features of the SU system
• Large contact area between ring and traveller
reduces the specific pressure.
• Optimum heat dissipation traveller to ring
The SU ring/ traveller system is suitable for the processing of synthetics
(PAC, VC, PES) and their blends in the medium to coarse yarn count range.
43. Advantages SU system
•Better and more even yarn quality
• Consistent yarn tension
• No thermal fibre damages
• Increased life cycle of travellers and rings
• Higher spindle speeds
• Lower yarn breakage rate
• No yarn stain
45. Magnetic Ring Spinning
The factor which limits the production in ring spinning???
Friction between the traveller and the ring
Solution to overcome the limitation???
A ring spinning system with a suspended ring which has a the
ability of stabilizing the suspended ring with a high degree of
precession.
• Though there were systems of stabilizing the ring using air
pressure and magnetic repulsion ,existence of two systems make it
difficult to complicated
46.
47. The invention provides……
•Replacement of ring traveller configuration with only rotating, floating
ring that has an eye on its inner middle surface.
•The ring is kept suspended in space by magnetic levitation system which
were in earlier developments.
•The floating ring is rotated around its centre by the effect of winding of
formed yarns over rotating spindle at the centre of the ring.
•Sensors and feedback systems are used to control the magnetic fields and
control the central position of the ring
•The floating ring may be made out of any material but here they have used
but preferably is made out of silicone steel material.
48. Motion to Drafting System
In conventional system
• All gear driven
• Difficulty with setting
alteration
• Needs to change gears
when some parameters to
be changed
e:g: Draft, Twist
50. New Automated Drafting System
Features of New system
• All rollers driven by individual motors, controlled by individual drives.
• Possible to alter draft and twist from the key pad. Fine tuning of twist
& draft adjustments possible.
• Interfacing & drive communication through Profibusand other types
of protocols makes controls simple and very accurate.
51. Automatic Doffing
• Used to make the doffing function automated
• Has the main components
-Doffing Beam Unit
-Servo Disc Belt
-ROBO DOFF unit
53. Automatic Doffing
Full cops are placed on Servo disc
belts & empty tubes are placed on
spindles
Servo disc Belt to transport
cops
54. Automatic Doffing
• The doffer transfers the full cops to the SERVO disc transport system,
which conveys them either to the transfer station of the winder or to
the fully automated ROBOload tube loader.
• The SERVO disc prevents tilting and thus ensure smooth transport,
while the machine already resumes yarn production.
55. Automatic Doffing- “Robo Doff”
-Full packages are
removed into a
waiting container
and empty tubes are
fitted
-Has a transfer
capacity of up to 32
cops per minute.
56. Automatic Roving Transfer
• Automatic Transfer
of Roving Bobbins
from Roving Frame
to Ring Frame.
•No deterioration in
Roving quality due
to storage and
handling.
•Better yarn quality.
57. Online Quality Control
• Accurate recording of the spindle speed and real-time detection of
yarn breakages.
• The stops are always assigned to the correct spindle automatically
• All sensors are connected to a PC-based central unit.
• All information concerning production, efficiency, ends down and
slipping spindles is available on the display
58. Online Quality Control
Individual Spindle Monitoring (ISM)
Each & every spindle is monitored and controlled
Sensor per each spindle and detects whether
runs, slipper spindle or ends down spindle
60. Online Quality Control
• This sensor has a photo receiver facing a light emitting diode. During
each revolution, the yarn balloon interrupts the light beam twice.
• The time between two successive interruptions serves as the basis for
the calculation of the balloon speed, while the amount of light
obstructed during the interruption is used as a rough diameter
measure
61. Online Quality Control
• All sensors on one machine are connected to the SCU(Sensor Control
Unit).
• This unit offers a touch screen Windows-based user interface, USB
interface and Ethernet connection which are used to monitor the
progress of spinning