High-Precision FHG Series Plastic Injection Molding Machine from China Suppliers and Factory - CE Certified
INJECTION UNIT
INJECTION UNIT 1
INJECTION UNIT 2
Frequently Asked Questions
What is the primary function of an injection unit?
The injection unit prepares the plastic material by heating and melting it, then injects the molten plastic into the mold cavity under controlled pressure and speed to form the final product.
What are the key components of a standard injection unit?
A standard injection unit consists of a hopper, a barrel, a reciprocating screw, heater bands to control temperature, and a nozzle that connects to the mold.
How do you choose the right injection unit size?
Selecting the right size depends on the shot weight of your molded parts, the material properties, the required injection pressure, and the plasticizing capacity needed for your cycle time.
What maintenance is required for an injection unit?
Regular maintenance includes checking and replacing worn non-return valves, inspecting screw and barrel wear, verifying heater band functionality, and cleaning or purging the unit when changing materials.
Why is temperature control critical in the injection unit?
Precise temperature control ensures uniform melting and prevents thermal degradation of the polymer, which directly impacts the strength, aesthetics, and dimensional accuracy of the molded parts.