ring frame auto doffing

PROJECT REPORT ON INDUSTRIAL TRAINING

AT VARDHMAN YARNS MANDIDEEP

Under guidance of :-Mr. Dinesh Chinnapan

Maintenance Executive Unit-5

Presented by :-Bhagat Ram7th semester

JAWAHAR LAL NEHRU GOVT. ENGG. COLLEGE

SUNDERNAGAR (H.P.)

Bachelor of Technology4th Year Textile Engineering

DEDICATE TO

My father Mr. Jamna Dass

My motherMrs. Sarswati My brother

Mr. Keshav SehgalTo my family members and teachers

ACKNOWLEDGEMENT

I would like to thank Mr. Praveen Dhingra (G.M. O Vardhman Yarn) Mr. Col. B.K. Sharma (Chief Manager H.R. & Adm.) and Mrs. Pooja Jain (Astt. H.R.)who gave me this opportunity to learn in this prestigious organization.

I would also thank Mr. Somnath Gupta (Production Chief manager Unit 5), Mr. Dinesh Chinnappan (Maintenance Executive) and Mr. Shushank (Production Officer) for guiding me .

I would also thank Shift officers of Unit 5 who helped a lot while my training period .

And I also like to thank all the operators who helped me during my training

And lastly all my friends who were with me during my training period.

PROJECT GIVEN To study the Autodoffing of Ring frame

•Machine and its parameters.

•What is Autodoffing.

•Difference between manual and automatic doffing.

•Time taken

•Observation and calculations

CONTENTS

COST CONSUMPTION

OBJECT OF STUDYo To reduce the stoppage

time of machine.

o Which directly increases the efficiency of machine.

o To increase the production.

RING FRAME MACHINE

Machine : Ring Frame Model : G32 Maker : Rieter Count : 30 Ne KW, 32 Ne KH, 30 Ne KH Feed hank :0.72 Ne,0.85 Ne,0.83 NeC.P. : 35,43,41T.M. : 4.4,4,4T.P.M. : 949,862,891BDCP : 62B.D. : 1.14 Traveler : 3/0 C1MMUDR,4/0 C1MMUDR Spacer : 4mm

PARAMETERS OF THE MACHINE

What is Auto

Doffing ???

DOFFING

Manual doffing

Automatic doffing

AUTODOFFINGIt is process of replacing fully doffed bobbins with the empty ones with the help of additional arrangement that we called ROBODOFF. ROBODOFF

MANUAL DOFFING

It is process of replacing fully doffed cops with the empty bobbins.

This is done by manually.

DISADVANTAGES OF MANUAL DOFFING

1. More time consumption.

2. Laborious work.

3. Less production .

4. More labour cost.

5. More proir to fault.

AUTODOFFING

It is also the process of removing fully doffed bobbin with empty ones.

The main difference is that the doffing is done automatically

ADVANTAGES OF AUTO DOFFING

Less time consumption.

More production.

Less laborious process.

PARTS OF ROBODOFF :

Gripper Doffer Shaft

CONTINUES………

Scissor Arm Servo belt

CURRENT DOFFING PROCESS

TIME CONSUMPTION WITHOUT FAULT

24.7.

13

25.7.

14

26.7.

15

29.7.

16

30.7.

17

31.7.

18 Avg.

0

50

100

150

200

250

300

222 220 225239

222 221 224.8333333

Total timeScissor inclined timeScissor return time

Seco

nds

Date

TIME CONSUMPTION WITH FAULT

24.7.

13

25.7.

14

26.7.

15

29.7.

16

30.7.

17

31.7.

18 Avg.

0

50

100

150

200

250

300264

243223

264248

221243.8333333

Total timeScissor inclined timeScissor return time

Seco

nds

OBSTACLES TO GOAL

Faults which are coming1.Gripper worn out2.Tubes are not fully loaded

75%

25%

Gripper worn outTubes are not loaded

OCCURRENCE OF FAULT

24.7.

13

25.7.

13

26.7.

13

29.7.

13

30.7.

13

31.7.

13 Avg.

0

2

4

6

8

10

12

14

78

9

12

6

88.333333333333

34

1 10

2

0 00.666666666666

667

total m/cfault came

Tota

l no

of m

achi

nes

Date

SENSORS

B150B151B152

F111F113

F110F112

B700B703

SOLUTION AND COUNTER MEASURES

PROPOSED DOFFING PROCESS

TIME SAVINGAvg. time = 42.8403 sec

TIME SAVING CONTINUES……Avg. time= 22.0677 sec

Average total time :224.833 secNo. of machines in unit -5 : 26So total stoppage time – 26*224.833sec= 5845.658 sec=97.42 minutes=1.1623hours In one shift =1.1623*8=12.99035 hours

OBSERVATIONS AND CALCULATIONS

OBSERVATIONS AND CALCULATIONS…..Time taken by Robodoff to go up

=42.8403 secTime taken by Robodoff to come

down =22.0677 sec New doffing time=224.833-

(42.8403+22.0677)= 159.0925 secTotal machines in unit 5=2626*65.57405=1704.9253sec=28.41

minutesIn one shift =28.41*8=227.32

minutes =

Time save=65.57405 sec

3.788 hours

CONCLUSION

We can reduce doffing time by proper scissor arm motion

By starting the Robodoff when it is in inclined position

By starting the machine when Robodoff is coming back