ring frame auto doffing
TRANSCRIPT
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