Study on Ring Doubling Frame/ Producing Double Yarn In Ring Doubling Frame/About Doubling in Ring Frame

Experiment Name: Study on Ring Doubling Frame For Producing Double Yarn
Ring Doubling Frame producing double yarn for help of Spindle speed, front roller delivery and also Yarn twist & twist Constant.

Objects:
1) To combine two or more single threads into one.
2) To insert sufficient amount of twist for holding the yarns.
3) To increase strength, smoothness and luster.
4) To reduce yarn hairiness.
5) To make sewing thread.
6) To wind a suitable bobbin.

Main parts: 
* Creel stand and creel.
* Front roller.
* Yarn guide.
* Ring and ring rail 
* Tin cylinder.
* Traveler. 
* Thread weight or slip roller.
* Lappet Spindle.

Specification:
    Motor rpm = 1430
    Motor pulley diameter = 6.25²
    Machine pulley diameter = 10.25²
    Tin cylinder diameter = 10²
    Wharve diameter = 1.37²
    Cylinder carrier wheel = 24T
    TCP carrier wheel = 62T
    TCP = 63T
    Front roller diameter = 2’’

Calculation:

Result:
1) Spindle speed = 6461.59 rpm
2) Twist constant = 1235.25
3) Front roller delivery = 319.143 inch/min.
4) Existing TPI = 20
5) Production = 14.37 lb/shift/frame.
6) Required TPI = 16.266
7) Required TCP =76.25T

Gearing diagram Or figure of doubling frame: 

Figure: Ring Doubling Frame

Conclusion:
For this experiment all of we know about various parts, calculation and also working principle of ring doubling frame. This machine is very important for producing double yarn on sewing thread and this experiment help us to our future job life.

Posted in: Experiments,Ring Doubling Frame,Ring Frame