Sunday, March 1, 2020

STRUCTURE OF RING FRAME ( SPINNING) MACHINE



STRUCTURE OF RING FRAME MACHINE:

The roving bobbins obtained from simplex process are used as input material in the ring frame. These roving bobbins are mounted on the bobbin holders of creel. The creel gets mounted on the top of the ring frame machine. The roving now passes through guide bar which guides the roving toward the drafting system. The creel is equipped with automatic roving break stop motion. When roving break gets occurred in any spindle during process, the stop motion gets actuated immediately and stop the working of that particular spindle.



The roving from guide bar, it passes through drafting rollers. These rollers get rotated at different speeds. The speed of rollers increases from back to front rollers. The material gets drafted in this zone. The weight per unit length of material is reduced up to desired limit with the help of drafting rollers.

The drafting rollers are equipped with loading arrangement. Three types of loading system are used such as spring loading pneumatic pressure loading and magnetic pressure loading.

When the material leaves the drafting zone, it passes through traveller negatively rotating at ring around the revolving spindle at very high speed. Traveller helps  to impart twist into the yarn.

The yarn being spun gets wound onto the ring bobbin simultaneously. The ring bobbin is mounted on the spindle. A traverse guide attached to the ring which helps to bring the yarn up and down along the length of the bobbin. This yarn traverse motion makes the bobbin uniform and prevents entanglement of yarn during it's unwinding. The up and down movement of traverse guide is controlled by means of a cam. The spindle rotates by a belt connected to main power shaft. The spindles are mounted on the fixed rail while the rings carrying the yarn traverse guide are mounted on the movable rail. This rail is operated with the help of a cam. Single motor is used to run the machine in conventional ring frame. This motor is connected to the main shaft.

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