High-Efficiency Hopper Dryer from China Suppliers - Precision Drying Equipment for Plastic Factory
01 INJECTION UNIT 1
02 INJECTION UNIT 2
03 INJECTION UNIT 3
Frequently Asked Questions
What is the primary function of an injection unit?
The primary function of an injection unit is to melt polymer resin and inject it into the mold cavity under high pressure to form the desired part accurately and efficiently.
What are the main components of the injection unit?
Key components include the material hopper, heated barrel, reciprocating screw, nozzle, and the drive motors that control the rotation and forward injection movement.
How does temperature control work in this unit?
Temperature is controlled via multiple heater bands wrapped around the barrel. These are divided into different zones to ensure a gradual, consistent, and precise melting of the plastic material.
Why is injection pressure important?
Proper injection pressure ensures that the molten plastic completely fills the mold cavity, preventing manufacturing defects such as short shots, voids, or sink marks in the final product.
How often should the injection unit be maintained?
Routine maintenance, such as inspecting the screw and barrel for wear, checking heater bands, and cleaning the nozzle, should be performed on a monthly basis, with comprehensive system checks conducted annually.