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Different Formulas of Winding Calculation with Examples

Different Formulas of Winding Calculation with Examples
Mayedul Islam
Assistant Chemist
Ha-Meem Group, Tongi, Gazipur, Bangladesh
Email: mayedul.islam66@gmail.com



Winding:
Winding process can be defined as the transfer of spinning yarn from one package to another large package (cone, spool, pirn etc). On the other hand it can be defined as the transfer of yarn from ring bobbin, hanks etc into a convenient form of package containing considerable long length of yarn. A process accumulating yarn on a package to facilitate the next process is called winding.
Winding Calculation
1. In case of cotton,
Production Calculation of Winding (per hour) ,

   Surface speed of winding drum (yds/min) × 60 × Number of drum × Efficiency × Waste
=…………………………………………………………………....………………...………… (Lbs/hr)
                                              840 × Yarn count

Or,

   Quantity of yarn per spindle(yds/min) × 60 × Number of spindle × Efficiency × Waste
=…………………………………………....………………..…....……………….…………… (Lbs/hr)
                                           840 × Yarn count

Or,

= Quantity of yarn per spindle(yds/min) × 60 × 8 × Number of spindle (spindle)

Example: 
Find out the production per 8hrs of an Auto cone winding machine from the following data:
  • Drum Speed: 2400 R.p.m
  • Dia of Drum: 3 Inch
  • Yarn Count: 30s
  • Efficiency : 68%
Solution:
Production/spindle/8hrs,

   Surface speed of winding drum (yds/min) × 60 ×8 × Number of drum × Efficiency
= ………………………………………………………………....………………………… (Lbs/8hrs)
                                           36 × 840 × Yarn count

   3.14 × 3 × 2400 × 60 × 8 × 68
= ……………………………………………. (Lbs/8hrs)
         36 × 840 × 30 × 100

= 8.13 (Lbs/8hrs)

So, Production/spindle/8hrs is 8.13lbs.

2. In Case of Jute,
Production Calculation of Winding (per hour) ,

   Surface speed of winding roller (inch/min) × 60 × count × Number of spindle × Efficiency
= ………………………………………………………………………....……………………… (lbs)
                                                      36 × 14400

Example: 
Find out the production per shift of a Spool winding machine from the following data:
  • Number of spindle: 20
  • Surface speed of winding roller = 165 yds/min
Solution:
Production/spindle/shift,

   Surface speed of winding roller (yds/min) × 60 × count × Number of spindle
=…………………………………………………………………………...………… (spindle)
                                                  14400

   165 × 60 ×8 × 20
=…………………………… (spindle)
          14400

=110 (spindle)

So, Production/spindle/shift is 110

3. In Case of Tex System,

Production Calculation of Winding (per hour) ,

 Surface speed of winding roller (cm/min) × 60 × Count × Number of spindle × Efficiency
=…………………………………………………………………………..…………………………(gm)
                                                              100 × 1000

Machine Efficiency,

       Actual Production
= ………………………………… ×100
   Calculated Production

Example: 
Find out the calculated production per shift of a winding machine from the following data:
  • Actual production: 90 spindle
  • Number of spindle: 20
  • Efficiency: 80%
Solution:
Calculated production per shift,

    Actual production
= …………………………
          Efficiency

   90 × 100
= …………….
      80

= 112.50 spindle

So, Calculated production per shift is 112.50 spindle.

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