Plastic Mold & Die Design — Winter 2024

What is an injection mould?

What is the difference between a die and a mould?

Explain the working of two plate mould with neat sketch.

What are the selection criteria of mould material?

What are the main differences between two plate and three plate mould?

What is mould cooling and how it is achieved?

Explain briefly the parts of injection mould with a neat sketch.

Define: i) Daylight ii) Parting line iii) Shot capacity

Mention the different types of split mould actuation methods.

Explain the working of three plate mould with neat sketch.

What are the conditions under which split cavity mould is recommended?

Write short notes on side cores.

Explain the working of dog-leg cam actuation method with a neat sketch.

List out various types of side core and side cavity.

Write the comparison between insert cooling and integer cooling system.

Write short notes on moulds for internal threaded components.

Describe angled-lift splits.

How cooling insert plays a vital role in enhancing cooling efficiency and achieving better part quality.

What is delay in split cavity mould? Explain with sketch in what condition it is considered.

Define: i) Undercut ii) Form pin iii) Spacer block

Classify the dies according to the extrudate & direction of flow of melt.

Explain design of straight through dies with calculations.

Write short notes on design criteria for extrusion dies.

Explain the die’s function used in extrusion process and its parts with neat sketch.

Write down different rheological consideration of material during die design.