Transcript Mold & Die

Mold & Die
Mold & Die
for Plastic, Stamping, Forging, Casting
Associate Professor Su-Jin Kim
Mold & Die
© GNU Su-Jin Kim
School of Mechanical Engineering
Gyeongsang National University
What is Mold & Die
• Die & Mold is the tool used to produce large quantities of
same products.
Casting
Forging
Press
Die Casting
Blow Molding
Plastic Injection
Mold & Die
Powder
© GNU Su-Jin Kim
Mold & Die ?
Bread
Vacuum forming
Die & Mold Productions of Korea
• Korea produces $5.7 billion Die & Mold a year.
• Plastic molds are $2.4 billion and Press dies are $2.0
billion.
• 51% of productions are focused around Seoul.
51%
22%
41%
2%
Plastic
15%
Press
35%
Diecasting
Other
Mold & Die
© GNU Su-Jin Kim
7%
23%
Die & Mold Exports & Imports of
Korea
• Korea Die & Mold industries export $2.1 billion and
import $0.1 billion a year (2011).
3%
6%
15%
7%
9%
3%
6%
4%
3%
Mold & Die
© GNU Su-Jin Kim
17%
금형 업체 통계
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전체: 2,600 업체(2006년 통계청, 5인 이상)
인력: 평균 15인/업체, 중소기업 업종
품목: 플라스틱976, 프레스511, 다이케스팅104, 기타1037
지역: 경기1008,인천269,서울256,부산256,경남244 …
경남: 창원,김해 집중
• 한국금형공업협동조합: http://www.koreamold.com
Mold & Die
© GNU Su-Jin Kim
경남 금형 업체
• 경남: 244 업체 (2006기준)
• 지역: 창원 55%, 김해 40%, 양산 5% (동부집중)
• 서부경남 금형산업 육성 한다면?
강점: 낮은 임금과 부지비용
약점: 수요기업(자동차, 가전)과 거리
기회: 진주-창원고속도로, 진사공단
위협: 다품종소량생산(항공) 정책
Mold & Die
© GNU Su-Jin Kim
Plastic
Automotive fender
Associate Professor Su-Jin Kim
Mold & Die
© GNU Su-Jin Kim
School of Mechanical Engineering
Gyeongsang National University
Plastic Injection Molding
• Plastics are melted in a heated cylinder and forced into a
mold by hydraulic plunger of rotating screw.
• Complex shape and good dimensional accuracy can be
achieved, as in die casting.
Mold & Die
© GNU Su-Jin Kim
http://ma.gnu.ac.kr/vod/Plastic/Plastic_Injection_Molding.MP4
http://kr.youtube.com/watch?v=bit-D1NnfjI&NR=1
http://kr.youtube.com/watch?v=NedTUB7YQE0&feature=related
Injection Mold
ROCKET RING
SPRUE BUSHING
• Die structure
ANGULAR PIN
GUARD BUSH
SLIDE CORE
GUARD PIN
CORE
EJECTION PLATE
돌출판
Mold & Die
© GNU Su-Jin Kim
EJECTION PIN
돌출핀
RETURN PIN
Injection Mold of JY-Solutec http://www.jysolutec.com
Injection Mold
Slide Core
Mold & Die
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Injection Mold
Mold & Die
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Hydraulic Cylinder
Injection Mold
Ejection Pin
일반 핀
단차 형 핀
Mold & Die
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BOSS 핀
접시형 핀
Injection molding
Vacuum
Cleaner:
Hand grip
Mold & Die
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Blower:
Housing
http://www.tsmould.com/cyberpr01.htm
Injection Mold
Mold & Die
© GNU Su-Jin Kim
Blow molding
• Blow up a plastic balloon to fill the mold.
http://www.youtube.com/watch?v=vSabFFQUr9E&p=9B6D9EAE75875D9D
http://kr.youtube.com/watch?v=grIPNOHkdOc&feature=related
http://kr.youtube.com/watch?v=3haIAsECzRc
Mold & Die
© GNU Su-Jin Kim http://www.youtube.com/watch?v=oR0gMKN58kY&p=9B6D9EAE75875D9D
Automotive Stamping Die
Mold & Die
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Automotive Stamp Die (프레스 금형)
• Process: Drawing → Trimming → Hemming → Punching
http://www.youtube.com/watch?v=ydoEJnwMlnk
Mold & Die
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Draw Die
Blank holder
Mold & Die
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Lower die
Draw Die
(a) lower die
(b) blank holder
(c) upper die
(d) die assembly
Mold & Die
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Automotive Die Machining
Mold & Die
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Progressive Stamping Die
• Multiple operation such as punching, bending, blanking.
Mold & Die
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http://www.youtube.com/watch?v=BDIYBloDydM&hl=ko
Forging
Mold & Die
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Forging Die
Mold & Die
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Die Casting
•
The molten metal is forced into the die cavity by high
pressure.
Cold-chamber
Mold & Die
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http://www.youtube.com/watch?v=-_8MFbUdH6Y&feature=related
Die Casting
Mold & Die
© GNU Su-Jin Kim
Mold Machining
CAD
CAM
Mold & Die
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EDM
Simulation
NC Machining
http://ma.gnu.ac.kr
Mold Design
• 3D Mold Design by UniGraphics
Mold & Die
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CAM
• Generate NC Data by Power Mill
Mold & Die
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Simulation & Optimization
• Simulation & Optimization by NCBrain
Mold & Die
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CNC Machining
• Mold machining by Machining Center
Mold & Die
http://www.youtube.com/watch?v=5pteVYeqVHI
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Electric Discharge Machining
Mold & Die
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Reference
• 한국금형공업협동조합: http://www.koreamold.com
• NCBrain www.ncbrain.com 금형가공시뮬레이션
• AFDEX www.afdex.com 단조 해석
• 태성정밀 http://www.tsmould.com 사출금형
• DIETEC www.dietec.co.kr 프레스금형
Mold & Die
© GNU Su-Jin Kim