ejector plate ppt for mechanical

1. Ejector Plate
Assembly
NAME:-SHASHANK SINGH
REG.NO:-11715998
ROLL NO:-A43
ASSIGNED BY:-MR. JASVINDER SINGH(15854)

2. Introduction
The ejector plate assembly is that part of mould to which the ejector element is attached. The assembly
is contained in a pocket, formed by ejector grid directly behind the mould plate.

3. Ejector Plate
The purpose of this member is
to transfer the ejector force
from the actuating system of
the injection machine to the
moulding by a an ejector plate.

4. Retaining Plate
This member is securely
attached to the ejector plate
by screws its purpose to
retain the ejector element.

5. Ejector Rod and Ejector Rod Bush
1. Conventional Design
Both ejector rod and ejector rod bush
are made in a low corban steel and
suitably case hardened.

6. Ejector Rod and Ejector Rod Bush
2. Standard part Design
Both ejector rod and ejector rod bush
are made in a low corban steel and
suitably case hardened.

7. Ejection Techniques
There are several ejection techniques, the selection of a
technique depends upon the shape of the moulding.
Following are the basic injection techniques:
(i) Pin ejection
(ii) Sleeve ejection
(iii) Bar ejection
(iv) Blade ejection
(v) Air ejection
(vi) Stripper plate ejection

8. Actuation Method
Length-Bolt Actuation
Tie Rod Actuation

9. Actuation Method
Chain Actuation Direct Actuation

10. Ejection from Fixed half
Following Ejection Technique can be
employed for the Ejection from the fixed
half
1. Air Ejection
2. Stripper Plate ejection.
3. Hydraulic cylinder operated pin ejection
system bolt.
4. Moving plate coupled length bolts.