Horizontal injection molding machine NOVA sT

servo-hydraulicfor PVCfor polystyrene

Overview
The NOVA sT series are servo‑hydraulic injection moulding machines with a 5‑point double‑toggle clamping unit, available in 180, 250, 330, 400 and 500 tonne models. They feature an in‑line reciprocating screw injection unit with injection capacities across the range from 268 g to 4,400 g (PS). Servo pump technology (twin servo pumps on most models, single pump on ST180) enables simultaneous movements, improved energy efficiency and lower noise.

Key sectors

• Automotive
• Electrical & electronics
• Construction
• Technical moulding

Technologies & Automation

• Supports LSR, PVC injection, thermoset moulding, FOAM MICROCELLULAR MOULDING® and gas injection
• Automation: robot integration and peripheral interfaces

Main highlights

• MOTUS multi‑touch controller
• Smart Flex clamping with wide tie‑bar spacing for large moulds
• Moving platen on linear bearings for improved parallelism
• Long ejector strokes and in‑line swivelling injection unit with quick‑release barrel
• Efficient servo motor driven gear pump system (twin pumps on most models)
• AMICO wireless remote service access

Standard features

• MOTUS multi‑touch controller
• Smart Flex clamping unit
• Moving platen on linear bearings
• Long ejector strokes
• Robust in‑line swivelling injection unit with quick‑release barrel
• Servo motor driven gear pump system

Available machine options

• Core pull (MP/FP)
• Air blast (MP/FP)
• Proportional valve for hydraulic ejection
• Second servo pump for simultaneous movements and valve‑gate operation (model dependent)
• Robot interface (E67)
• Special screws and barrels (wear/corrosion resistant, mixing, barrier, low compression, etc.)
• Barrel liners, extended nozzles, additional nozzle zones
• Mould valve‑gate (hydraulic or pneumatic)
• Hydraulic shut‑off nozzles (pin or bolt)
• Integrated hot runner, mould pressure transducer, gas injection interface
• Data logging, RJG process monitoring interface
• Special paint, extra flowmeters, closed‑loop feed throat cooling
• Increased mould height, PVC/Thermoset/LSR kits, FMC®, power outlets, photocell, directional chute
• Electric screw drive, injection accumulator, magnetic platens, hydraulic mould clamps, rotary table
• AMICO system services

Controller (MOTUS)
The MOTUS touchscreen controller offers gesture navigation (swipe, scroll, zoom), virtual axis joystick, customizable interface, sequencer for special cycles, quick search for parameter editing, graphical analysis, production and step modes, smart alarms and a full‑HD multi‑touch display with Power Link bus and real‑time Ethernet. RFID and remote access supported.

Clamping unit

• 5‑point double‑toggle clamp
• Euromap or SPI platen configurations
• Chrome‑plated tie bars
• Linear bearings for moving platen guidance
• Powered mould height control and automatic central lubrication
• Three‑stage closing/opening speed profiles and closed‑loop proportional control for mould stages
• Digital readings for platen position, cross‑head position and clamping force
• Mould thickness and clamping force self‑adjustment, two‑stage ejection profiles and ejector position readout
• Programmable multiple core pull control and overlapped ejector movement on select models

Injection unit

• In‑line hydraulic cylinder injection unit sliding on linear bearings
• Swivelling injection unit for easy screw removal and cleaning
• Quick barrel change system, general purpose screw and bimetallic barrel with nitrided screw
• Injection driven by two cylinders for accurate nozzle centring
• Ceramic heater bands with temperature alarms, speed/pressure profiles and multiple hold strategies
• Digital screw position readout, adjustable rotation profile and back‑pressure control
• Decompression programs, auto purge and stainless steel hopper

Hydraulic system

• Fixed displacement gear pumps with servo motor and Baumuller drive with P/Q control (single on smaller, twin on larger models)
• Optional second servo pump for simultaneous movements and valve‑gate operation
• Digital hydraulic pressure readout, oil level/temperature/filter monitoring and oil temperature control
• Automatic cooling water shut‑off valve, oil preheating program, pump delivery/return filters and oil cooler

Electrical system

• Servo drives, remote starter with overload protection
• Interlocked main switch preventing cabinet opening while energised
• Fuses and static relays for plastifier heating, cabinet fan and LED indicators for solenoids
• Compliance with Euromap or UL electrical standards

Cooling circuit

• Flow meters with independent circuits showing water temperature and flow rate (throat and mould cooling circuits)

Base

• Part discharge outlet accessible on three sides
• Sound‑insulated motor‑pump housing and anti‑vibration mountings
• Lubricating oil recovery trough

Safety devices

• Constructed to meet Machinery Directive 2006/42/EC
• CE certification and compliance with EN 201 and ANSI/SPI B151.1‑2007 standards
• Rear mould protection with double interlock and pump motor shutdown
• Monitoring of hydraulic and electrical safety devices and interlocked nozzle purge guard

Technical specifications

• Series: NOVA sT
• Clamping forces available: 180, 250, 330, 400, 500 tonnes
• Clamping: 5‑point double‑toggle
• Injection capacity (PS): 268 g to 4,400 g across the series
• Injection unit: reciprocating screw, in‑line hydraulic cylinder, quick‑release barrel, bimetallic barrel, nitrided screw
• Drive: servo motor driven gear pump system (single or twin servo pumps depending on model)
• Controller: MOTUS multi‑touch (gesture navigation, sequencer, smart alarms, full‑HD display)
• Standards: CE, EN and ANSI/SPI compliance