There are many machines used by spinners in industry which are not used commonly these days. Some of them are explained below;
Bale Breaker
Ø This is first machine used for the opening .The machine is not designed to clean the cotton
Properly but the some instances dust removes.
Ø Bale breaker is a machine designed to take layers of cotton directly taken from the bale and tear them apart leaving the cotton partially opened state.
ØIn this machine the principle of opposing spikes as mentioned above applied as shown in the figure of the machine.
Ø Cotton from the feed lattice fall on the bottom lattice where from it is slowly taken to the inclined lattice picks cotton up.
Ø Gauges of these lattices are set according to the staple length of the cotton fiber.
Ø When material reaches to the top then the spike roll tear the material apart.
Opening is inversely proportional to the distance between spike roll and inclined lattice.
Ø opening is directly proportional to the speed of these two.
Ø Another purpose of this roll is to give a require amount of delivery to the next process.
Ø But there is also a disadvantage of the high speed; it will create the amount of neps, and short fibers.
Ø Roller near the spike roll is striper roll which is also spiked.
Ø It function is to take the material off which remains with the spike roll on the inclined lattice which comes back again for processing.
Ø During the opening some type of impurities also fall down but not more.
Ø A rake above the feed lattice is also used to stop or to drive the machine again if more material is passing than the required amount.
Ø Opened cotton is then taken by another stripping roll and gives to the hopper feeder.
Ø Its production is about 600-800 kg/hour.
Wednesday, October 29, 2008
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