Math problem of combing machine

Combing machine math related question.

1. MATH PROBLEM OF COMBING MACHINE MD. ABUL SHAHID SHOJOL 2013-01-01-017 butEX

2. Mathmatical law: Production = π DN inch / min Production  = Nip/min X Feed/Nip X No . of head X Waste % X Eff .%  Production per day,                                                                                                    100-Noil %  = Nip/min X Feed/nip X No . of head X Feed lap weight X Efficiency X …..…………. X 60 X 24                                                                                                          100  Mechanical draft                            Feed sliver weight  Actual draft  =  …………………………   X Doubling                         Delivered sliver weight  Actual draft  = (Mechanical draft X 100 ) / (100 – Waste%)  Production constant = Circumference speed of coiler calendar roller / 36  

3. 1. In a combing machine coiler calendar roller speed is 118 rpm, radius 1”, Delivered sliver weight per yd is 46.6 grain. Calculate the production constant. If efficiency is 90% then also calculate the production per shift. Ans : Production constant = 20.58 Production/shift = 59.20 lb /shift

4. 2. Ribbon/feed lap weight per yd 580 grain . 6 laps are feeded in a  combing machine . If delivered sliver weight per yds is 46.60 grain, then what will be the ribbon lap hank and draft? Ans : Ribbon lap hank = 0.0144 Actual draft = 74.68

5. 3. If in a combing machine draft constant is 2780 and DCP is 46, then what will be the mechanical draft of the machine? If waste is 18%, then what will be the actual draft?  Ans : 60.43 73.70

6. 4. Calculate the DCP of a combing machine from these parameters. Feed lap hank = 64 K Tex , Delivered single sliver hank = 3.40 K Tex , Doubling = 6, Waste = 15%, and draft constant = 1696. The machine is giving twine sliver delivery . Ans : 35T

7.   5. Calculate the production for 8 hrs of a combing machine  from the following data –  Feed/Nip = 6.7 mm  Waste = 16% Nip/min = 120  Efficiency = 90% No. of head = 6 Feed lap hank = 68 Ktex A ns: 119.04 kg/8hrs

8. 6. Calculate the production per day of a combing machine when,  Nip/min = 220 No. of head = 8 Feed/nip = 7mm Lap weight = 1000 grains/ yd Efficiency = 90% & Noil = 15 % Ans : 2113.31 lbs

9. 7. If the hank = 60 ktex , sliver hank = 5 ktex , a six head comber used what is the draft or actual draft ? Ans : 72

10.   8. For a comber machine, which is 6 head comber Sliver delivered in cans = 1 The linear density = 68 ktex Sliver hank = 3.54 What is the actual draft ? Ans : 57.7

11. 9. If the data in comber is: Feed/nip = 6.7 mm Sliver nip = 324 mm Then what is the mechanical draft ? Ans : 48.5

12. 10. if for a six head comber m/c , twin slivers of 3.4 ktex is required, Head is six head comber Feed lap = 64 ktex Draft constant = 1696 Waste extraction = 15% Dcp = ? Ans : 36

13. 11. The sliver delivered by a comber is of 3.4 ktex & the dcp is 35 What is the dcp if the required output sliver had to be 3 ktex ? Ans : 31

14. 12. Find out the no of comber m/c to produce 10000 lb /day of 40 count semi combed [50:50] yarns when: Nips/min = 380 Feed/nip = 5 mm Lap wt = 1000 grains/ yd No of head/ frame = 8 Noil % = 15 % Efficiency = 90 % Ans : 4

15. 13. Find out production if nips/min & feed/nips are 360 & 5.5 mm Assume the parameters .

16. 14. Find out the production/shift/comber machine in kgs ( assume necessary parameter)   15. Find out the total draft required to produce a comber lap ( assume necessary parameter)

17. Thank you