Plastic Mold & Die Design — Winter 2023

Write principles of mold design.

Give difference between two plate mold and three plate mold.07

Explain stripper plate mold with neat sketch.

Draw neat sketch of two plate mold.

Explain material selection for cavity, core and back plates. Enlist Runner Ejection Techniques and Explain stripper plate ejection system

with neat sketch. OR07

Explain the factors affecting the choice of different runner ejection technique.

Give the importance of mold cooling.

What is the basic difference between dies and mold? How cooling insert plays a vital role in enhancing cooling efficiency and

achieving better part quality.

List out various types of side core and side cavity.

List the different types of split mold actuation methods.07

Explain Stripping internal undercuts with neat figure

Describe angled-lift splits

What are the functions of inserts, guide pins and bushes?

Write short notes on molds for internal threaded components.

What are the different methods of thread forming?

Explain dog-leg cam actuation with neat figure.07

Explain Design of straight through dies with calculations.

What are standard mold parts?

Explain Mold construction

Explain finger cam actuation with neat figure.

Write short notes on Design Criteria for extrusion die

Explain the dies function used in extrusion process and its parts with neat sketch.

Write down different rheological consideration of material during die design