Experiment Name : Study on beating up mechanism of shuttle
loom.
Introduction: The beating up is the third primary motion of
weaving. It consists in driving the last pick of weft to the fell of the cloth.
This is accomplished with the help of a reed fixed in the sley. The sley is
given a sudden and quick movement direction to the fell of the cloth by the
cranks in crank shaft.
Objective:
1) To learn about the beating-up mechanism of crank shaft.
2) To learn about different types of parts related with the
mechanism.
3) To calculate the speed of the mechanism.
Figure:
Related Machine Parts:
- Crank Shaft
- Crank Shaft
- Crank Bearing
- Crank Pin
- Crank Arm
- Sword Pin
- Sley Race
- Rocking Shaft
- Race Board
- Sley Race
- Reed
- Reed Cap
Construction of the mechanism:
1) The beating up mechanism is connected with crank shaft.
Here crank shaft is connected with machine pulley.
2) The crank shaft contain crank. Each crank connected with
crank arm by crank pin and it contain
bearing for smooth operation.
3) Crank arm and sley sword are attached with sword pin.
4) Position of the reed is top of the sley race.
5) Reed cap placed on the top of the reed.
6) The whole parts of the beating up mechanism are mounted
on rocking shaft.
Working Principle:
1) Crank shaft achieved motion from machine pulley.
2) When crank shaft rotate due to the structure of the crank
it move forward and backward.
3) Each crank connected with crank arm which is connected
with reed. So when crank shaft rotates reed move forward and backward.
Calculation:
Speed of crank shaft (Beating Speed) = (Motor RPM X Motor Pulley Dia) / Machine Pulley dia
= (960 X 3) / 24 = 120
Reed Count = 66
Result :
Speed of crank
shaft = 120RPM
Reed Count = 66
'
Conclusion:
>>>>>>>>>>>>>>>>>>>>>>>
