Mastip Hot Half System, Руководство по настройке

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System Selection Guide
A Hot Runner System maintains a molten flow of plastic from the moulding machine nozzle to the gate of a plastic
injection mould.
Mastip Hot Runner System Benefits
• Efficient cycle times
• Improves part consistency and quality
• Minimised gate vestige
• Reduced injection pressure
• Valve gates allow for sequential filling and allow family part moulds
• Eliminates the cold runner that would be scrap or require re-grind
• Increased process control for fine tuning of mould and part
Hot Runner System Critical Areas of Performance
Manifold design considerations:
• Precise temperature control of the molten plastic
• Balanced flow to all cavities for even part filling
• Nozzle sizing for maintaining sufficient molten material flow
• Gate detail required to correctly fill the part and shut the gate
• No material traps or areas of flow hesitation to ensure quick colour change and prevent material degradation
• Minimum pressure drop across the Hot Runner System
• Reasonable melt residence time
• Maximum cooling of gate areas to ensure effective shut off to gates
Hot Runner System Overview
Single Nozzle Gating Directly onto Part
Single Nozzle Gating into a Cold Runner
Hot Runner System Overview
Fully Hot Versus Semi Hot Configuration
Fully Hot advantages:
• No material wastage
• Low cycle times
• Low part stress
Semi Hot advantages:
• Reduces cold runner weight
• Reduces cost of mould
• Suitable for difficult gate locations