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Injection Unit — Product Gallery
INJECTION UNIT — View 1
INJECTION UNIT — View 2
INJECTION UNIT — View 3
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Frequently Asked Questions
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What is an injection unit in a molding machine?
The injection unit is a core component of an injection molding machine responsible for melting plastic material and injecting it into the mold cavity under high pressure. It typically consists of a hopper, barrel, screw, and nozzle assembly.
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What materials can the injection unit process?
The injection unit is compatible with a wide range of thermoplastic and engineering-grade materials, including PP, PE, ABS, PC, POM, PA (Nylon), and glass-fiber reinforced polymers, depending on the barrel and screw configuration.
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How is the injection pressure of the unit controlled?
Injection pressure is precisely controlled through a combination of hydraulic or servo-electric drive systems and a programmable control unit (PLC/HMI). Operators can set and monitor pressure parameters in real time to ensure consistent product quality.
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What maintenance does the injection unit require?
Regular maintenance includes cleaning the barrel and screw, checking and replacing the nozzle tip and check ring, lubricating moving parts, and inspecting the heating bands and temperature sensors. Following the manufacturer's maintenance schedule ensures long service life and optimal performance.
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Can the injection unit be customized for specific applications?
Yes. The injection unit can be customized with different screw geometries (L/D ratio, compression ratio), specialized barrel coatings for abrasive or corrosive materials, and various nozzle types to suit specific production requirements and material characteristics.
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What are the key performance indicators of an injection unit?
Key performance indicators include shot weight capacity (grams), injection speed (mm/s), maximum injection pressure (MPa or bar), plasticizing rate (kg/h), and screw diameter (mm). These parameters determine the suitability of the unit for a given product and production volume.