2 plate ,3 plate , fully describe

1. TYPES OF MOULD
1. TWO PLATE
2. THREE PLATE
3. SPLIT CAVITY
4. SIDE CORE
5. MOULD FOR THREADS
6. HOT RUNNER MOULD

2. 1. TWO PLATE MOULD
Submarine
TYPE OF GATE TYPE OF EJECTION
Edge or side
Sprue
Overlap
Winkle
Fan
Tab
Film
Ring
Diaphragm
Pin
Sleeve
Blade
Stripper plate
Stripper Ring
Stripper Bar
Valve
Air

3. PARTS OF 2 PLATE MOLD
1. Top plate
2. Cavity plate
3. Core plate
4. Guide pillar
5. Guide Bush
6. Core Back Plate
7. Ejector pin
8. Spacers
9. Centering Bush
10. Bottom plate
11. Eje. Guide Bush
12. Eje. Guide pillar
13. Eje. Back plate
14. Sprue pull & Ejector
15. Ejector plate
16. Sprue puller bush
17. Return pin
18. Stop button
19. Sprue Bush
20. Register ring
21. Core insert
22. Cavity insert

4. 2. THREE PLATE MOULD
TYPE OF GATE TYPE OF EJECTION
PIN POINT PIN
SLEEVE
BLADE
STRIPPER PLATE
STRIPPER RING
STRIPPER BAR
VALVE
AIR

5. Three plate Mold – Closed conditionThree plate Mold – Closed condition

6. Three plate Mold – Open conditionThree plate Mold – Open condition

7. THREE PLATE MOULD – CLOSED ASSY.
Runner plate
X
Cavity plate
Swing Hook
Lock Assy
Stopper
Core insert
Core Plate
Stripper
Plate

8. MOULD OPENS AT
FIRST PARTING SURFACE
Feed System Pulled
to moving cavity
plate back side and
the
Pin point Gate is cut
XX

9. Second Parting Surface Opens
Spring hook
Lock releases
Feed system
Ejected in
First P.S.
Component
is carried by
moving half

10. Stripper Ejection

11. 3. SPLIT CAVITY MOULD
Suitable for moulding components with all round
external undercut.
SLIDING SPLITS ANGULAR LIFT PIN
ACTUATION METHODS
FINGER CAM
DOG LEG CAM
CAM TRACK
SPRING
HYDRAULIC

12. 4. SIDE CORE OR SIDE CAVITY
Suitable for moulding components having local,
external under cut.
ACTUATION METHOD
FINGER CAM
DOG LEG CAM
CAM TRACK
SPRING
HYDRAULIC

13. Component Drawing

14. Component Drawing

15. Component Drawing with Shrinkage

16. Component Analysis
Lug
 The component has two lugs
projecting from the inner wall
of the component.
 These create an internal
undercut in the mould.
 This necessitates the split core
design.
 Parting surface is in a single
plane as shown in the fig.
Parting
Surface

17. Injection & Ejection Type
Injection
 As it is a single cavity mould, a direct sprue gate is adopted
for material feeding.
Ejection
 As it is split core design, pin or any other type of ejection is
not possible.
 The initial ejection movement is by the movement of the
cores.
 The final ejection of the component from the cores is by a jet
of compressed air.

18. View showing Moving Half

19. Section X - X

20. Split Core in the Forward Position

21. Sectional Isometric View Moving Half

22. SPOOL
Matl NylonMatl Nylon
Density 1.15gm/ccDensity 1.15gm/cc
Shrinkage 1.5 %Shrinkage 1.5 %

23. Split Mold for Spool

24. SPLIT DIE – PLAN VIEWSPLIT DIE – PLAN VIEW

25. SLIDING SPLIT DIE DRGSLIDING SPLIT DIE DRG
g6g6
151500
202000