Basic Mold Design
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Follow on Instagram for UpdatesBasic Mold Design Syllabus — Unit-wise Content
The official GTU curriculum for Basic Mold Design (subject code DI03023061) as prescribed for AI & ML · Semester 3 divides the course into 5 units, covering 46 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (DI03023061)Unit 1 Injection Molded Part And Parting Surface
- Introduction to injection molded products and its characteristics Part drawing : Part sectional elevation and plan Concepts of core
- cavity and product Parting line : Importance and criteria of parting line selection Parting line and Parting surfaces overview Types of parting surfaces: (1) Flat parting surface and (2) Non-flat parting surfaces: Stepped
- Angled parting surface & Complex edge forms
Unit 2 Injection Mould Construction Basic Mold Terminology
- Mold base components Core
- cavity plates
- Back plate and Register ring
- Fixed half and moving half
- Sprue bush
- Feed system : Runner-gate and sprue
- Ejection system and Ejector assembly
- Socket headed screw
- Parts for alignment : Dowel and Guide pin- Guide bush
- Cooling channel Mold Cavities and cores - Methods of incorporation core and cavity : Integer cavity and core plates
- Insert-bolster - Inserts : Core and Cavity and its fitting methods - Types of bolster plates : Solid type
- Strip type
- Frame type
- Chase type and Bolster Plate - Comparison of Integer and Insert-Bolster methods Guide Pillar and Guide bush - Function of guide pillar and bush - Guide pillar and guide bush - Guide pillar size range - Material of construction - Positioning of Guide pillar Sprue Bush : Spherical seating and flat fitting Register Ring/ Locating ring Program Name: Engineering Level: Diploma Branch: Plastics Engineering Course / Subject Code : DI03023061 Course Name : Basic Mold Design - Function and importance - Types : Reduced diameter
- Constant diameter
- Increased diameter and Increased depth Sprue puller and its types : Reversed tapered
- Z-type and Mushroom headed Assembly and detail drawing of hand injection mold
Unit 3 Feed System
- Introduction of feed system and its importance in mould design Feed system structure for single impression and multi-impression Runner Design : - Runner requirements - Runner cross section shape - Runner size - Runner layout for multi-impression molds - Runner balancing Gate Design : - Gate requirements - Positioning of gate and its effect on product - Gate balancing - Types of gate : Sprue gate
- Rectangular edge gate
- Overlap gate
- Fan gate
- Tab gate
- Diaphragm gate
- Ring gate
- Film gate
- Pin gate
- Round edge gate
- Subsurface (submarine) gate and Winkle gate
Unit 4 Ejection System
- Introduction of ejection system and its importance in mould design Ejector grid Parts of ejector plate assembly and its function : ejector plate
- retaining plate
- ejector assembly guide system
- ejector rod and rod bush
- stop pins Ejector plate assembly actuation methods Ejector plate assembly return system Ejection techniques : - Pin ejection - Stepped pin ejection - D-shaped pin ejection - Sleeve ejection - Blade ejection - Valve ejection Program Name: Engineering Level: Diploma Branch: Plastics Engineering Course / Subject Code : DI03023061 Course Name : Basic Mold Design - Air ejection - Stripper bar ejection - Stripper plate ejection
Unit 5 Cooling System
- Importance of cooling in mould design Integer type cavity plate cooling methods: U-circuit
- Rectangular circuit
- Z-circuit Integer type core plate cooling methods: Angle hole system
- Baffled hole system
- Stepped circuit Cavity insert cooling: U-circuit
- copper pipe system
- Interconnecting groove design Core insert cooling :Circular and rectangular milled groove design
- Helical core cooling
- Deep chamber design
- Baffle hole system
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