Apron Draft Spinning Frame Machine | Jute Apron Draft Spinning FrameMachine | Bobbin Building Mechanism

Experiment name: Study on Jute Apron Draft Spinning Frame Machine.

Objects:
§ To know about the gearing diagram of jute spinning frame.
§ To know about Flyer rpm, surface speed of retaining r/r and drawing r/r.
§ To know about the bobbin building Mechanism.

Main parts Jute Apron Draft Spinning Frame Machine :
1. Retaining roller.
2. Drawing roller.
3. Tin cylinder.
4. Flyer.
5. Bobbin rail

Machine specification:
· Motor rpm = 1250.
· Motor pulley diameter = 8.5²
· Machine pulley diameter = 13.5²
· Tin cylinder diameter = 5.8²
· Flyer diameter = 1.8²
· TCP = 37T
· DCP = 49T
· Drawing roller diameter = 2.4²
· Retaining roller diameter = 1.3²

Calculations:

Fig: Gearing diagram of Jute Apron Draft Spinning Frame Machine

Fig: Bobbin Building Mechanism

Results:
Ø Flyer surface speed =  2441.07”/min
Ø Surface speed of retaining r/r =  83.06”/min
Ø Surface speed of drawing r/r =  1905.3”/min
Ø Surface speed of Tin cylinder =  55314.5”/min
Ø Draft =  23
Ø Draft constant = 1127.

Conclusion:
Apron drafting sliver spinning frame is very important and necessary M/C for any jute industry. So, we should learn about this experiment very carefully and sincerely.