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Anna University B.TECH - Polymer Technology - Semester 6 - MOULD AND DIE DESIGN
Posted Date: 10 Dec 2007 Resource Type: Articles/Knowledge Sharing Category: General
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Posted By: Bala Member Level: Diamond
Rating:  Points: 1
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PM605 MOULD AND DIE DESIGN
UNIT I
Classification of Injection Moulds – Methodical Mould Design – Number of Cavities, Selection of Injection Moulding Machine, Layout of Cavities in multi-impression Mould, Feed Systems – Design of Runners & gate, Ejection Systems, Cooling Systems, Venting – Other aspects in Injection Mould Design.
UNIT II
Classification of Compression Moulds – Factors that Influence Thermoset Moulding – Materials Selection in Relation to Moulding Conditions, Design of Mould Cavity – Advantages and Disadvantages of Compression moulds.
UNIT III
Transfer Moulding – Types, principles, Design of Pot and Plunger, Feed System, Economic determination of the number of cavities, Technological determination of the number of cavities, design of mould cavity, design of loading chamber, Heat losses and energy requirement to heat the mould – Advantages and disadvantages of Transfer mould.
UNIT IV
Blow Mould Design – Materials Selection, Mould Cooling, Clamping Force, Mould Venting, Pinch-off, Head die design, Parison Diameter Calculation, Wall Thickness, Vertical-load strength, Blow ratio, Base pushup, Highlights, Rigidizing, Shapes, Design based consideration – Shrinkage, Neck and Shoulder Design, Thread and beads, Bottom Design.
UNIT V
Extrusion die design–Construction features of an extruder, Process, Characteristics of Polymer melt, Die geometry, Die head Pressure, characteristics of land length to Profile thickness, Extrudate die swell, Die materials, Classification of dies-Dies for Solid Section, Dies for Hollow Profiles, Blown film dies, Flat film dies, Parison dies, Wire and cable Coating dies, Spiral mandrel die, Fish tail die, Adjustable Core die.
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Responses
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| Author: Bala 11 Dec 2007 | Member Level: Diamond Points : 1 | REFERENCE BOOKS:
1. P.S.CRACKNELL and R.W DYSON, Hand Book of Thermoplastics - Injection Mould Design, Chapman & Hall, 1993.
2. Laszlo Sors and Imre Balazs, Design of Plastics Moulds and Dies, Elsevier, Amsterdam - Oxford - Tokyo - NY, 1989.
3. R.G.W.PYE, Injection Mould Design, SPE Publication.
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