INDUSTRY COMPONENT

Nozzle

A precision component in injection molding machines that controls material flow into molds.

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Component Specifications

Definition
The nozzle is a critical component in the injection unit of plastic injection molding machines, serving as the interface between the heating barrel and the mold. It precisely controls the flow of molten plastic material into the mold cavity under high pressure and temperature conditions, ensuring consistent material delivery and preventing leakage or drooling.
Working Principle
The nozzle operates by receiving molten plastic from the heating barrel and directing it through a precisely engineered orifice into the mold sprue bushing. It maintains thermal control to prevent premature solidification and uses mechanical shut-off mechanisms (in shut-off nozzles) or thermal regulation (in open nozzles) to control material flow timing and prevent drooling after injection.
Materials
Typically made from high-grade tool steels (H13, P20), stainless steels (420, 440C), or bimetallic combinations with wear-resistant tips. Hardness ranges from 45-60 HRC with surface treatments like nitriding or chrome plating for wear resistance.
Technical Parameters
  • Length 50-200 mm
  • Connection Type Flanged, Threaded, or Quick-Change
  • Heating Capacity 500-3000W
  • Maximum Pressure 150-250 MPa
  • Orifice Diameter 2-12 mm
  • Operating Temperature 180-350°C
Standards
ISO 294, DIN 16742

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Nozzle.

injection molding nozzle plastic injection nozzle molding machine component nozzle specifications industrial nozzle injection unit part Nozzle Nozzle in Rubber and Plastic Product Manufacturing

Parent Products

This component is used in the following industrial products

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The component of a silicone molding machine responsible for melting and injecting silicone material into the mold cavity.

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A precision valve designed to dispense sterile processed fruit or vegetable products into containers without contamination.

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Engineering Analysis

Risks & Mitigation
  • Material degradation from overheating
  • Wear from abrasive additives
  • Leakage causing production defects
  • Thermal expansion mismatches
  • Clogging from contaminated material
FMEA Triads
Trigger: Excessive wear from abrasive materials
Failure: Increased orifice diameter causing over-packing
Mitigation: Use wear-resistant materials, implement regular dimensional inspections
Trigger: Inadequate temperature control
Failure: Material degradation or premature solidification
Mitigation: Install precise temperature sensors, implement PID control systems

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.02 mm for critical dimensions, surface finish Ra ≤ 0.4 μm
Test Method
Pressure decay testing, dimensional verification with CMM, material flow rate testing at standard conditions

Buyer Feedback

★★★★☆ 4.7 / 5.0 (19 reviews)

"Great transparency on the Nozzle components. Essential for our Rubber and Plastic Product Manufacturing supply chain."

"The Nozzle we sourced perfectly fits our Rubber and Plastic Product Manufacturing production line requirements."

"Found 51+ suppliers for Nozzle on CNFX, but this spec remains the most cost-effective."

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Frequently Asked Questions

What is the difference between open and shut-off nozzles?

Open nozzles allow continuous material flow and rely on thermal control, while shut-off nozzles use mechanical mechanisms (spring-loaded or hydraulic) to physically block material flow between cycles, preventing drooling and improving cycle consistency.

How often should injection molding nozzles be replaced?

Nozzle lifespan depends on material abrasiveness, operating conditions, and maintenance. Typically 6-24 months with regular inspection for wear, corrosion, or damage to the orifice and sealing surfaces.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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