Ring Spinning Frame/ Ring Frame

transcript

Welcome To My

Presentation

Presented By:

Md. Yousuf Hossain.

ID No. : 120103063 Department Of Textile Engineering.

Green University Of Bangladesh.

Md. Yousuf Hossain, Green University Of Bangladesh, yousuf_te@yahoo.com

Fiber: A unit of matter characterized by

flexibility, fineness, sufficient strength,

elasticity and a high length to width ratio.

Spinning: Spinning is the process where

fibers are converted into yarn.

Yarn: A grouping of fibers twisted together

to form a continuous strand.

Fiber ↓

Blow Room

↓ Carding

↓ Draw Frame

↓ Speed Frame

↓ Ring Frame

Functions/ Objectives

To produce required count of yarn from the

supplied roving by drafting.

To insert sufficient amount of twist to the yarn.

To attenuate the roving until the required fineness

of the yarn is achieved.

To wind the yarn onto the bobbin.

To build the yarn package properly.

(2) Drafting Zone:

At the ring spinning frame greatest value of draft is

given.

The drafting zone of the ring frame is the most

important part of the machine that directly influences

the evenness and strength of the yarn.

All the modern ring spinning frame use a 3 over 3

roller drafting with both the top and bottom middle

rollers covered with aprons.

(2) Drafting Zone:

The bottom rollers are steel fluted and driven

positively. The top rollers are covered with synthetic

rubber coating and driven by the frictional contact

with the bottom rollers.

For this purpose the top rollers are weighted by

using spring, pneumatic or magnetic weighting with

the help of a pendulum arm.

A total draft of 15 to 40 and in some cases even up

to 50 can be given at the ring spinning frame.

• The yarn then passes through a traveller on to the

yarn package (cop).

• The cop is mounted on the spindle and rotates with

the spindle.

• When the cop rotates the tension on the yarn pulls

the traveller to rotate around the ring.

The yarn after being twisted by the traveller has to

be properly wound on the package called as the

In order to the winding there should be a difference

in the surface speed between the spindle and the

traveller.

The traveller has no drive of its own instead it is

carried along with the yarn which is being wound

on the cop after passing through the traveller.

• Higher traveller velocity.

• Longer Machines (1488 spindles available).

• Improved drafting system.

• Smaller ring sizes.

• Automatic doffing.

• Auto piecing.

• Higher draft ranges (more than 100).

• Data collection system (Ring Data).

• Any type of material (fiber) can be spun.

• Wide range of count can be processed.

• It is uncomplicated and easy to operate.

• Higher yarn strength can be achieved.

• Finer yarn can be produced.

• Energy cost is very high.

• Machine generates more heat.

• The capacity of the cop is limited.

Ring Spinning Frame/ Ring Frame

Presentations & Public Speaking