Plastic mold & Die design(Department Elective - II) — Winter 2020

What are the machines used for fabrication of molds.

What are the design considerations and constraints for split mould?

What are parts of Conventional Injection Mold and Suggest best materials to Manufacture them with neat sketch

What is Honing Operation?

What is Shrinkage and how it can be calculated? What is warpage?

Explain the Working principle of EDM-wire cut machine with neat sketch

What are the parts of Extruder screw and their functions

For a 8 – cavity Mould explain the concept of Runner and Gate Balancing

What is Transfer Molding? Explain the Design principles of Pot and Plunger transfer mold with appropriate sketches.

What is Transfer Pot and Loading chamber?

Explain the working principle of Form Pin.

What is Extrusion? What are the die Design Goals of Extrusion Die and suggest the ways to accomplish the same.

What is Gate? What are the factors that required selecting the optimum size of Gate?

What is Bolster? Name the types of Bolsters available and what are the materials used for construction of bolsters.

Explain the working Principle of Finger cam actuation mechanism with neat sketch and necessary calculations

What is Runner efficiency and how it is calculated?

What is Sprue? Write a short Note on Sprue Design and Its types with appropriate sketches

What is Runner? How many Types of Runners were there with neat sketches? How runner size and layout is calculated? Suggest the best runner.

Explain Transfer Molding Cycle with neat sketch.

Explain Flash Type compression mold with neat sketch.

Explain Different types of Gates with neat sketches? Explain how Auto-Degating can be achieved?

What are the fundamentals to be considered in designing Transfer Molds?

Explain how Integer Core and cavity cooling can be achieved with neat diagram.

What is Parting surface? Explain How parting surfaces are classified. .