FHG Servo Motor Injection Molding Machine 100ton-1680ton - High Efficiency from China Suppliers and Factory
INJECTION UNIT
01 INJECTION UNIT 1
01 INJECTION UNIT 2
Frequently Asked Questions
Q What is the function of an injection unit in molding machines?
The injection unit is responsible for melting the plastic raw material, homogenizing the melt, and injecting it under high pressure into the mold cavity to form the final product.
Q What are the key components of a standard injection unit?
A typical injection unit consists of a hopper for material feeding, a heated barrel, a reciprocating screw, heating bands, and a hydraulic or electric drive system to push the screw forward.
Q How does the screw geometry affect the injection process?
Screw design, including the feed zone, compression zone, and metering zone, determines how efficiently the plastic is melted, mixed, and pressurized, directly impacting cycle times and product consistency.
Q How do you maintain the injection unit for longer service life?
Regular maintenance includes purging the barrel to prevent material degradation, checking heater bands and thermocouples regularly, monitoring screw wear, and ensuring proper lubrication of all moving parts.
Q What are the advantages of electric vs. hydraulic injection units?
Electric injection units offer higher precision, faster response times, and better energy efficiency. Hydraulic injection units are generally more cost-effective for high-tonnage and heavy-duty molding applications.