Applications of Vertical Injection Moulding Machines in Electrical Manufacturing

What Sets Vertical Injection Moulding Apart

The defining characteristic of a Vertical Injection Moulding Machine is its vertically oriented clamping unit, where the mould opens and closes on a vertical axis. This configuration allows gravity to hold inserts (metal terminals, wire leads, connectors) in place within the mould cavity before plastic injection — eliminating the risk of insert displacement that is common in horizontal machines. The result is precise, consistent encapsulation without the need for complex insert retention tooling.

Key Applications in Electrical Manufacturing

• Wire End Connectors and Plugs: Overmoulding insulation over crimped or soldered wire terminations to produce finished plug assemblies.
• Terminal Block Moulding: Insert moulding of metal contact terminals into plastic housings for terminal blocks and junction connectors.
• Cable Glands and Strain Relief Fittings: Moulding of cable entry components that protect wire at panel entry points.
• Sensor Housing Moulding: Encapsulation of sensor elements and wire leads in protective plastic housings.
• Electrical Connector Shells: Moulding of outer shells and housings for multi-pin connectors used in automotive, industrial, and consumer applications.
• Insulated Ferrule Manufacturing: Production of insulated wire end ferrules for DIN rail wiring applications.

Technical Advantages for Electrical Components

Vertical Injection Moulding Machines offer several technical advantages for electrical component production. The vertical parting line allows easier removal of complex moulded parts with undercuts. Rotary table configurations enable continuous production cycles — while one half of the mould is being filled, the other is being unloaded and reloaded with inserts. This dramatically increases machine utilisation and output.

Material Compatibility

• PVC (Polyvinyl Chloride): Standard insulation material for wire overmoulding applications.
• Nylon (PA6, PA66): High-strength connector housings requiring mechanical durability.
• Polypropylene (PP): Cost-effective housings for consumer electrical applications.
• Thermoplastic Elastomers (TPE/TPR): Flexible overmoulding for cable strain relief and grip applications.
• PBT and PPS: High-performance engineering plastics for automotive and industrial electrical components.

Sttellar Dawang's Vertical Injection Moulding Machines

Sttellar Dawang manufactures a range of Vertical Injection Moulding Machines from 15-ton to 200-ton clamping force, with rotary table, shuttle table, and fixed table configurations. Our machines feature precision injection control, servo-hydraulic drive systems for energy efficiency, and comprehensive safety guarding systems. We provide full support for mould development, process optimisation, and operator training.