1. Ejection Systems 1) Ejector Pins 8) Lifters 2) Ejector Sleeves
9) Collapsible Core
3) Ejector Blades
10) Expandable Collet
4) Group Exercise
11) Hydraulic
5) Stripper Plate
12) Unscrewing
6) Angle Pins/Sliders
13) Air Ejection
7) Cam Blocks/Slider
14) Pass Through

2. 1. Ejector Pins
Animation of Ejector Pins – Slide 2

3. 2. Ejector Sleeves Animation of Ejector Sleeves
Animation of Ejector Sleeves – Slide 14

4. 3. Ejector Blades
Animation of Ejector Blades – Slide 11
Mapeng.net

5. What Criteria/Factors/Variables that affect the
4. Group Exercise
What Criteria/Factors/Variables that affect the
total projected ejection area =
f (Quantity, Diameter)
Response = Q and D

6. Undercuts
Bad
Good

7. 5. Stripper Plate Animation of Stripper Plate
Animation of Stripper Plate – Slide 16

8. 6. Angle Pin/Slider Animation of Angle Pin/Slider – Slide 10

10. 7. Cam Blocks/Sliders

11. 8. Lifter
Animation of Lifters
Animation of Lifters – Slide 7

12. Animation of Collapsible Core: 0:17 and 1:00

13. 12 cavity collapsible core mold

14. 10. Expandable Collet Animation of A-Side Striker
Animation of B-Side Striker

15. 11. Hydraulic Core Pull Video of Hydraulic Core Pull 0:25 – 0:50 secs
Animation of Hydraulic Core Pull – Slide 7

16. 12. Unscrewing Video of Unscrewing Mold Part at 1:20 Process 0:45-1:25
Animation of Unscrewing Mold
Video of Rack-n-Pinion Unscrewing Mold
0:25 – 1:00

17. Animation of Air Ejection – Slide 13

18. 14. Pass Through
Protolabs.com

19. Reverse Ejection
Slides + unscrewing + ejector pins