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:

Changeover Time Reduction

Case Study: canned tuna manufacturing

E-mail: ornicha@mut.ac.th*

Ornicha Anuchitchanchai

Department of Industrial and Logistics Engineering, Faculty of Engineering, Mahanakorn University of Technoloby, Bangkok

E-mail: ornicha@mut.ac.th*

(Single Minute Exchange of Dies: SMED) 2

Seamer 28.60

10.10 24.78 16.60

SMED

Abstract

This study aims to improve efficiency of canned tuna manufacturing process by reducing changeover

time tin production process. To analysis the problem, it shows that setting up time for changing size and type of product in production process, as it has many works to be done, therefore it causes of long

changeover time and leads to low productivity. This research applies the principle of Single Minute

Exchange of Dies (SMED), purposing to reduce set up process and changeover time. After improvement for two machines, seamer machine and formatting machine, the result indicates that change over time of

those two machines has been reduced. For seamer machine, changeover time has been reduced from 28.60 minutes to 10.10 minutes. For formatting machine, changeover time has been reduced from 24.78

minutes to 16.60 minutes. Moreover, this improvement could be further applied to other production line.

Keywords: Productivity improvement, Waste reducing, SMED

1.

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7 (7-Wastes)

(Changeover Time) (Set up Time)

[1]

(Lot Size) [2]

(Bottle Neck)

Electriv Drive [3]

[4] [5]

2

(SMED) 3 4

5

2.

(SMED: Single Minute Exchange of Die)

(SMED) Shigeo Shingo [6]

10

SMED

2 (Internal Activity)

(External

Activity)

SMED 3

1. (Separate Internal and external setup)

2. (Convert internal to External setup)

3. (Streamline all aspects of the

setup operations)

(ECRS)

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0 10 20 30 40

Seamer setup

Format setup

line

key code

( )

3.

1 2

2g

kT

p m (1)

p k T m

Times New Roman 1

1

Code

Code 2

Seamer Format

Code

2

2 Code

4.

Code Code

Seamer

Format (Work Element)

4 1

- (Value Activity)

- (Non � Value

Actuvity)

- (External Activity)

- (Internal Activity)

1 Format

ONLINE

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1 67

2 ( 1,2) 3

3 2

4 1

5 2

6 ( 3) 2

7 2

8 2

9 3

21 Front Plate 4

23 L1/4 2

24 ( 8) 7

25 Turret Ring 1

26 Turret Ring 1

4.1

U

4.2

ECRS

2

3 19

5.

2 Seamer

28.60 10.10

For Mat 24.78 16.60 2-3

4-5

2 - Format

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16.95

11.65 11.23

17.37

6.3

3.8 3.63

6.47

0

2

4

6

8

10

12

14

16

18

20

3 - Seamer

( )

( )

( )

132 16.95 34 6.30 98 10.65

107 11.65 31 3.80 76 7.85

103 11.23 29 3.63 74 7.60

136 17.37 36 6.47 100 10.90

4

Format

5

Seamer

16.95

11.65 11.23

17.37

6.3

3.8 3.63

6.47

0

2

4

6

8

10

12

14

16

18

20

( )

( )

( )

113 7.38 77 4.12 36 3.26

160 17.40 120 12.48 40 4.92

160 17.40 120 12.48 40 4.92

113 7.38 77 4.12 36 3.26

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