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INJECTION UNIT
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To understand
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Maximum swept volume cc / max. shot weight gr.
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calculation of max. shot weight for a material.
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Maximum metering stroke in mm.
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dependance of quality of melt for consistancy of moulding.
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Maximum injection speed g/s or cc/s
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how it ensurs melt to spread through out when in fluid condition- before it freezes. Its relationship with freezing time.
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Maximum injection pressure Kg/cm2
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how it overcomes resistance to flow during filling and; pressure phase on account of flowratio and; viscosity.
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Maximum Injection Power.Kgcm/sec.
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how it takes care of difficulty in fiiling for thiner walled and high flow ratio parts.
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Plasticizing rate g/s or Kg/hr.
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how it influences cycle time.
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CLAMPING UNIT
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To understand
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Clearance between Tiebars and platen size mm x mm
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how it accomodates mould.
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Maximum daylight mm and mould open stroke mm
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its significance for ejection of deep parts.
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Minimum mould height
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its relationship with mould open stroke and daylight.
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Clamping force
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its dependance on cavity pressure and method to compute cavity pressure.
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HYDROMOTOR
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To understand
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Torque Kgm and rpm
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torque requirement for -viscosity of- melt.
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DRIVE POWER
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Power supply frquency 60 or 50 Hz.
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its influence on speeds.
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Pump-motor rating. kW
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to match the application - usage of machine.
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CONTROLS
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- Conventional / Proportional and Cartridge valve Hydraulic Controls
- Electrical / solid state / microprocessor controls
- Open loop or closed loop controls
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NO LOAD CYCLE TIME
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It indicates the time for non processing part of the cycle time
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