China 100ton-800ton PVC Injection Molding Machine - Reliable Suppliers from FUHONG Factory for Plastic Processing
01 Injection Unit
Injection Unit — View 1
Injection Unit — View 2
Injection Unit — View 3
Frequently Asked Questions
1
What is the main function of the injection unit in an injection molding machine?
The injection unit is responsible for melting plastic material and injecting it into the mold cavity under controlled pressure and speed. It includes the hopper, barrel, screw, and nozzle, all working together to ensure consistent material delivery and shot accuracy.
2
What materials can be processed by this injection unit?
The injection unit is compatible with a wide range of thermoplastic materials including PP, PE, ABS, PC, POM, PA (Nylon), PET, and engineering-grade resins. The screw and barrel design can be customized to suit specific material requirements.
3
How is injection pressure controlled in the injection unit?
Injection pressure is precisely controlled via a hydraulic or servo-driven system with real-time feedback. Operators can set multi-stage injection pressure and speed profiles through the machine's control panel to optimize part quality and cycle time.
4
What maintenance does the injection unit require?
Regular maintenance includes periodic cleaning of the screw and barrel to prevent material degradation, inspection of the check ring and nozzle for wear, lubrication of moving parts, and checking heater bands and thermocouples for proper temperature control.
5
Can the injection unit be customized for special applications?
Yes. The injection unit can be configured with different screw L/D ratios, screw geometries (standard, barrier, mixing), and special coatings (e.g., bimetallic, nitrided) to handle abrasive, corrosive, or high-performance engineering materials.
6
What is the shot weight capacity of this injection unit?
Shot weight capacity varies depending on the machine model and screw diameter. The injection unit is engineered to deliver consistent shot weights with minimal variation, ensuring high repeatability across production runs. Please refer to the machine specification sheet for exact capacity figures.