NISSEI PLASTIC INDUSTRIAL

FVX Series: Debut of six new machines as X-Pump equipped hybrid type
large-sized injection molding machines

December 2008 [News Release]

Nissei Plastic Industrial has recently developed six new machines that comprise the FVX Series as X-pump equipped hybrid type large-sized injection molding machines combining the key characteristics of an electronic and hydraulic type machine.

The six newly developed machines are - the FVX560-210L and FVX560-310L with clamping force of 5,500 kN (560 tons), the FVX660-310L and FVX660-400L with clamping force of 6,390 kN (660 tons), and the FXV860-400L and FVX860-600L with clamping force of 8,410 kN (860 tons).

The key characteristic of Nissei's hybrid-type molding machines is the "Hybrid X-Pump System" that adopts the innovative X-pump. This "Hybrid X-Pump System" combines servomotor drive technology and hydraulic drive technology as the driving source for the injection molding machine, and it is totally different from standard hybrid systems. By controlling the rotation of the servomotor, the motor provides driving power only when required (it stops when not required).

As a result, up to an approximately 45% reduction in energy consumption is possible for the FVX660 compared with conventional Nissei hydraulic machines. Hence, the hydraulic oil consumption is reduced by approximately 10% in the same way as well.
Furthermore, compared with conventional hydraulic machines, energy efficiency has been greatly improved and for this reason, the rise in the temperature of the hydraulic oil is suppressed and cooling water requirements are thereby reduced. As a result, reductions in cooling water facility (such as cooling towers) expenses as well as maintenance costs are possible.

In addition, the following injection performance improvements compared with conventional hydraulic machines have been materialized.

Injection rise time of 30 ms represents a high response.

Ultra-low speed/low pressure range improvements difficult in hydraulic machines have been materialized.

-1	The lowest operation velocity and resolution in low velocity range have been improved compared to the conventional hydraulic machines (the lowest control velocity 0.5 mm/s).
-2	The lowest control pressure and resolution in low pressure range have been improved compared to the conventional hydraulic machines (the lowest control pressure 0.3MPa).

"High-pressure + long-sustained" injection holding pressure performance difficult to achieve with electric machines has been materialized (100% holding pressure sustained for 60 seconds possible).

Through employing servomotor drive, equivalent level of low noise operation as all-electric types is achieved.

Maintenance-free operation, lower failure rate, and longer operation life have been materialized.

The major attributes of the clamping mechanism are:

Simultaneous motion of ejector operation during mold opening is possible.

High-rigidity direct-pressure clamping method with outstanding durability is adopted.

Open stopping position has been significantly improved.

-1	Fluctuation in mold open stopping position improved (preventing take-out errors by fluctuation range improvement of up to 37%).
-2	Low pressure clamping function enhanced by improved overrun against stopping position setting (mold protection function).
-3	Mold open stopping position almost unaffected by changing mold opening speed.

Low (optimal) setting of clamping force is easily possible, and this is effective in terms of saving energy, prolonging the life of the molding machine and molds, and countering defects caused by degassing and short shots, etc.

It is effective for thick molds (deep well molding, hot runners, and three plate).

The exclusive controller "TACT" functions as a human-machine interface that employs a color liquid crystal display and features a tilt mechanism whereby the viewing angle can be changed to match the operator's height.
The main attributes are:
The dedicated NC21 Controller employs a bright and easy-to-read liquid crystal display and parameter setting is by way of a touch panel. An easy-to-operate selector switch is also employed.

The machine comes prepared with three types of mold movement: single-stage, slide, and turntable, and these can be selected depending on the application.

The X Pump System was developed in the fall of 2004, and was awarded the "Director General of the Agency of Natural Resources and Energy Award," which was presented at the "2006 (27th) Implementation of Energy Conserving Machinery Awards" by The Japan Machinery Federation. It is a hybrid-type molding machine based on Nissei's original new concept that is totally different from traditional hybrid-type molding machines.

FVX660-400L

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