Roving Frame / Speed Frame
The product delivered by roving machines is called Roving. Roving is a Fibre strand of lesser count than that of a sliver. It is also has a small twist to keep Fibres together. It is wound on to a package which is suitable for feeding spinning machines.
Objectives of speed frame
1. Attenuation of draw sliver to a suitable size for spinning.
2. To insert a small amount of twist to strengthen the roving.
3. To wind the twisted strand roving into a bobbin.
Operation involved in speed frame:
1. Drafting
2. Twisting
3. Winding
Drafting:
To reduce the weight /unit length of sliver to make it suitable for ring spinning system.
Twisting:
To insert small amount of twist to give required strength of roving.
Winding:
To wind the twisted roving on to bobbin.
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