Injection Molding Machine

A syringe injection machine is an automated molding system that melts and injects medical-grade plastic materials (such as polypropylene (PP) or polyethylene (PE)) into a syringe mold cavity under high pressure. After cooling and solidifying, the machine ejects the finished syringe components, ready for assembly and sterilization.

This process ensures the mass production of high-quality syringes with precise volume markings, smooth surfaces, and consistent structure — essential for accurate medical dosing and patient safety.

    Main Components and Structure

1. Clamping Unit

• Holds the syringe mold securely during the injection and cooling stages.

• Uses servo-driven clamping mechanisms to apply uniform pressure, preventing flash or deformation.

2. Ejection System

• Automatically ejects the finished syringe parts after cooling.

• Uses soft or mechanical ejection methods to avoid scratching or damaging the transparent surface.

3. Control System (PLC + Touchscreen)

• Intelligent control via a PLC (Programmable Logic Controller) and HMI touchscreen interface.

• Allows easy adjustment of temperature, injection speed, pressure, and cycle time.

1. Provides real-time monitoring and data recording for quality control.

Working Process

1. Material Feeding – Medical-grade plastic granules are fed into the hopper.

2. Melting – The plastic is heated and melted uniformly by the screw barrel.

3. Injection – The molten material is injected into the syringe mold cavities under controlled pressure.

4. Cooling and Solidification – The parts cool inside the mold to retain their precise shape and clarity.

5. Ejection – The finished syringe components are automatically ejected and collected for further assembly.