Mould Ejection System
During each injection moulding cycle, moulded parts need to be released from the cavity by ejection system, it is also called de-moulding system, design of ejection system affect product quality and production efficiency.
See below figure, a complete mould ejection system include:
• Ejection plate, fixation plate, moulds base plate.
• Screws to fix these plates.
• Ejector pin, ejector block, sleeves.
Ejection distance is normally defined at 5-10mm, or 2/3 of the length of some of the plastic parts with big draft angle.
When no special ejection problems are expected, the standard ejector pin will perform well, a sleeve ejector is used to provide uniform ejection around core pin.
A central valve ejector is frequently used combination with air ejection on cup shaped parts where vacuum might exist. The air valve is thus only a secondary ejection device. A stripper plate or ring is used when ejector pins or valves would not operate effectively. The stripper plate is often operate by means of a draw bar or chain.
We Manufacturers all types of parts used in Mould Ejection System
Ejector Pins Type A, Ejector Pins Type C, Blade Ejector Pins, Ejector Sleeves, Air Ejector Pins, Air Vents, Runner Lock Pin, Sprung Core, Plate Accelerator, Double Ejection.