Saturday, February 20, 2021

Yarn reeling process, objective of yarn reeling process, types of yarn reeling machine, common structure and working of yarn reeling process


Yarn reeling process ( cone to hank reeling machine)

Yarn reeling process:

The process of conversion of yarn from cone or cheese to hank is called yarn reeling process.

Objectives of yarn reeling process:

The main objective of yarn reeling process is to reduce yarn dyeing cost. How does the yarn dyeing cost reduce by reeling process.

When the yarn reaches in the fabric manufacturing unit, it is used to weave a fabric. The fabric specifications are used as per customer need. 

If customer asks to weave woven stripe, checks and chambray fabrics, then weaver need to dye it in desired colour shade. 

The yarn is dyed by following two process. The package dyeing is more costly because it requires two time winding process. The drying cost in package dyeing is also big factor.

If the yarn is dyed in hank form, then winding of yarn is done one time only. Thus dyeing cost gets reduced. The most of the yarn dyer dry the yarn in sun light, so that drying cost gets cut in this process.

In this way we can say that main objective of yarn reeling process is to reduce the yarn dyeing cost.

Types of yarn reeling machine:

The types of yarn reeling machine are given below:

1 - Single end yarn reeling machine:

In this type of reeling machine, one hank or skein is prepared in one time. This machine is used in handloom and Textile testing laboratory. 

2 - Multi- end yarn reeling machine:

In this kind of yarn reeling machine, two or more than two hanks ( skeins) are prepared. The productivity of these machines are very high. 

Types of reeling machine according to mechanism:

There are three types of yarn reeling machine according to machine mechanism:

1 - Manual yarn reeling machine:

In this kind of reeling machine, all machine operations take place manually.

2 - Power driven yarn reeling machine:

In this kind of yarn reeling Machine, all operations are performed by electric power. There two types of power driven yarn reeling machines.

Semi - automatic yarn reeling machine: in this machine the doffing of hanks of yarn is performed manually. Yarn length on hank can be varied from desired hank length. The hank yarn tension on the hexagon gets released manually.

Fully automatic yarn reeling machine: in this kind of yarn reeling machine, you can make a desire length of yarn on hank. The hexagon comes out automatically with the help of hydraulic arms. The hank yarn tension on the hexagon releases automatically. The hexagon rats on two stands. Operator can take out the hank easily. Now the hexagon goes back on its brackets.

Common structure and working of yarn reeling machine:

The common structure of the yarn reeling machine is given below:

Yarn passage:

First of all the yarn from package passes through yarn guide. Now, yarn passes through yarn traverse guide. Finally yarn goes over the hexagon.

The main frame of the reeling machine is made of iron channels. 

Hexagon B is made of good quality steel square pipes. Main shaft C is fitted in the centre of hexagon through out the length of the hexagon.

Main pulley D is fastened on the one side of main shaft. Second pulley E is also mounted at this end. Main pulley D is connected to the motor pulley G with the help of main belt H. The second pulley E is connected to the third pulley J with the help of second bet I. The one bevel gear is mounted on the third pulley shaft J. This bevel gear connects to another bevel gear. A worm shaft is connected to second bevel gear. Worm L is mounted on the top of the worm shaft. This worm is connected to the worm wheel M. A connecting rod connects the yarn traverse guide one the pin mounted near the circumference of worm wheel. Cone holder N is mounted in the bottom portion of machine. Yarn package is mounted on this cone holder. P is a yarn guide which helps to guide the yarn in correct direction during operation. Yanr traverse guide A is used to provide to and fro traversing motion to the yarn. Q is a yarn which gets wrapped on the hexagon.

When the motor rotates, the hexagon begins to rotate in anti clockwise direction. Hexagon drags the yarn attached with it. The yarn wrapping on the hexagon starts immediately. 

If yarn coils lay one over othe, the skein thickness in middle is increased. When this hank is unwound during package winding, the chances of yarn entanglement are increase highly. The complete hank may be damaged too. 

A yarn traverse guide help to maintain the thickness of hank during reeling.

Second pulley mounted on the main shaft is connected to the third pulley with the help of belt. When second pulley rotates, the third pulley also starts to rotate. This third pulley transfer angular motion to work shaft at right angle. The worm is geared with worm wheel. When worm rotates, it transfer angular motion to the worm wheel at right angle. The the worm wheel begins to rotate. The worm wheel is freely connected to yarn traverse guide with the help of connecting rod. When worm wheel rotates, the yarn trablverse guide travels from left to right and then right to left. This to and fro motion gets repeated continuously. This kind of movement of yarn traverse guide imparts traversing motion to the yarn getting wrapped in the hexagon. In this way even thickness of hank throughout the process gets resulted.

Structure and working of yarn reeling machine

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