Classification of Modern Weaving Machines?

Classification of Modern Weaving Machines:

Modern Weaving machines are classified according to their filling insertion mechanism. The classification is as follows:

Air-Jet
Projectile
Rapier
Water-Jet

Air-JetWeaving:

Air-jet weaving is a type of weaving in which the filling yarn is inserted into the warp shed with Compressed air. Air-jet system utilizes a multiple nozzle systems anda profiled reed. Yarn is drawn from a filing supply package by the filing feeder and each pick is measured for the filling insertion by means of a stopper. Upon release of the filling yarn by the stopper, the filling is fed into the reed tunnel via tandem andmain nozzles, which provide the initial acceleration.

Fig.: Operation principle of air jet loom

ProjectileWeaving:

Projectile weaving machines use a projectile equipped with a gripper to insert the filling yarn across the machine. The gripper projectile draws the filling yarn into the shed. The Projectile glides through the shed inarake-shaped guide.Braked in the receiving unit,the Projectile is then conveyed to its original position by a transport device installed under the shed.

Fig.: Operation principle of Projectile

Rapier Weaving:

In Rapier weaving, a flexible or rigid solid element, is called rapier ,is used to insert the filling yarn across the shed.The rapier head picks up the filling yarn and carries it through the shed.After reaching the destination, the rapier head returns empty to pick up the next filling yarn, which completes the cycle.A rapier performs a reciprocating motion.

Fig.: Rapier Weaving Machine

Water-Jet Weaving:

A water-jet weaving machine inserts the filling yarn by highly pressurized water. The relative velocity between the filling yarn and the water jet provides the attractive force. If there is no velocity difference, then there would be no tension on the yarn results in curling and snarling of the yarn. Water-jet weaving machine can only be used for hydrophobic fibers.