UNILOY
SPRINGFIELD Multi-Nozzle Structural Foam & Web
Gas Assist Machines
For Large Structural Plastic Parts
Ideal for injection molding lightweight, low cost, durable structural
plastic parts, the Springfield UMSF Structural
foam machines create a cellular foamed core surrounded by integral
skins, forming a total integral structure. In this process a foaming
agent (N2 or CBA) is mixed with the polymer melt and short shot
through a modular multiple nozzle system into the mold or molds
in a volume less than is required to fill a solid part. Both the
injection pressure and expanding gas/polymer cellular mixture act
to fill the mold. The mold cavity pressures are 10 - 20 times lower
than conventional injection molding which also permits the use
of lower cost aluminum molds.
The Springfield Structural Foam machinery is recommended for injection molding large structural plastic products such as indoor/outdoor furniture, large appliance components, construction products, material handling bins and pallets, building products, toys and recreational items.
The Springfield Structural Web UMSW is an optional molding process that has similar advantages to Structural Foam. Parts are solid without foam but are packed out by internal gas pressure that produces hollow channels and hollow thick sections. The UMSW process has the added benefit of an improved smooth solid color surface and faster cycles for very thick section parts.
Heavy Duty Clamp
Springfield Structural Foam injection molding machinery
- Heavy duty fully hydraulic clamp, infinitely adjustable.
- Very large platens up to 2800 x 5080 mm (110" x 200")
- Up to 280 injection nozzle locations available
- Clamping forces up to 2500 tons
- Lowest cost aluminum molds can be used due to very low cavity pressure
- Multi-cavity versatile configuration molding capability. Mold multiple parts of different sizes simultaneously.
- Dual outboard clamping cylinders and cental traversing cylinder for fast clamp speeds and balanced clamping force.
- Linear transducer for clamp positioning.
- Proportional control of clamp open/close speeds, low pressure close, clamp tonnage and decompression.
- Full ejector force on demand.
- Modular hydraulic system with independent clamp and injection hydraulic control.
Versatile Injection
Springfield Structural Foam injection molding machinery
- Shot sizes up to 180 kg (400 lbs.)
- High output production up to 2300 kg/hr (5000 lbs/hr).
- Eliminates hot runner manifolds in the mold.
- Multi-nozzle injection, enables molding of very large and complex parts, simplifies mold manifolds and reduces part stress and warping.
- Dual extruders for two color molding.
- Closed loop injection control.
- Independent three-stage injection speed and pressure control for each
shot size.
- 6000 PSI melt pressure per accumulator
- 8 different shot sizes per accumulator.
- Injection speeds infinitely adjustable.
- Light weight tubular modular melt manifold extension blocks for ease of installation.
- Longer inlet tubes for improved access during nozzle set up.
- Electromechanical extruder variable speed drive with AC motor and heavy duty gear reducer for high energy efficiency, long life and minimum maintenance.
- Corrosion and abrasion resistant extruder barrel.
- Special Springfield Structural Foam screw design.
- Standard independent sequential nozzle control system.
- Optional sequential web process shot control system.
Precise User-Friendly Control
Springfield Structural Foam injection molding machinery
- B&R Control, fully integrated, remote I/O
- User-programmable functions and access levels.
- High resolution 15” color touch screen.
- Remote monitoring via modem link to Uniloy Milacron for service and upgrades.
- Full diagnostics and troubleshooting.
- Remote monitoring via modem or Ethernet.
- Compact flash memory, no hard drive to wear out.
- Standard Euromap 12 robot interface.
- Heater band burn out detection.
- Temperature set-back control.
- SPI standard and special core and ejection sequences.
- Quick access to screens through use of TABS.
- Operator Change Log.
- Trending/plotting of temperatures, pressures and axis positions
- Recipe storage for mold data locally or to USB device
- Alarm log and Alarm History of last 200 alarms
- Screen capture and save to USB device
- Process monitor
- Machine diagnostics of analog and digital I/O
- English/Metric selection
- Multiple languages
Large, Strong, Light Weight Parts
Springfield Structural Foam injection molding machinery
Springfield Structural Foam Machine Applications
- High volume production of large structural plastic parts such as indoor and outdoor furniture.
- Large appliance components
- Construction and building products
- Material handling — pallets and large shipping containers
- Large automotive components
- Large toys and recreational product
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