Friday, May 18, 2012
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| Breaker card |
Main Parts of Breaker Card:
D = Delivery roller
Do = Doffer
W = Worker roller
S = Stripper roller
T = Tin cylinder
S = Shell
P = Pin roller
F = Feed roller
D = Delivery roller
Do = Doffer
W = Worker roller
S = Stripper roller
T = Tin cylinder
S = Shell
P = Pin roller
F = Feed roller
Principle of Breaker Card:
It is a down striking and half circular carding machine. Its feed is at one side of the machine and delivery is on the opposite side.
Speed of Rollers:
Cylinder: 2400 – 2700 feet per minute
Feed roller: 9 – 14 feet per minutes
Worker: 35 – 50 feet per minutes
Stripper: 300 – 500 feet per minutes
Doffer: 75 – 95 feet per minutes
Delivery roller: 150 – 200 feet per minutes
Cause of Excessive Sliver Wastage in Jute Breaker Card
Working Regions of Breaker Card:
- Combing action occurs between stripper and worker roller.
- Carding action occurs between cylinder and worker roller.
- Opening spreading ocurrs between shell and pin feed roller.
Speed of Rollers:
Cylinder: 2400 – 2700 feet per minute
Feed roller: 9 – 14 feet per minutes
Worker: 35 – 50 feet per minutes
Stripper: 300 – 500 feet per minutes
Doffer: 75 – 95 feet per minutes
Delivery roller: 150 – 200 feet per minutes
Cause of Excessive Droppings in Jute Breaker Card
- Hard and specky jute fibre.
- Improper emulsion application
- Improper speed ratio of different rollers
- Faulty roller pins
- More work load on pin
- High or low moisture regain
- If any roller is eccentric
Cause of Excessive Sliver Wastage in Jute Breaker Card
- More moisture regain
- Faulty roller setting
- Faulty pin
- Jam or lapping due to faulty drawing
- Faulty auto stop motion
- Frequent quality change
- Operation negligency
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