May
29, 2002
Ube
Machinery Corporation Announces World's Largest
Fully-Electric Injection Molding Press The
MD1800S III Goes on Sale
Ube Machinery Corporation has pioneered the
development of large-size all-electric
injection molding machines, primarily to
answer demand from the automotive industry.
Injection molding machines of this type offer
highest clamping forces of any presses
worldwide, and now the MD1800S III joins the
line-up, following in the footsteps of the
well-received MD1400 III model marketed from
2000.
The MD1800S III is a larger version of the
MD1400S III, a press that in February was
recognized for its exceptional energy
efficiency with the Director-General's Award
from the Agency of Natural Resources and
Energy. The MD1800S III offers a number of
powerful features.
Some 70 participants attended the launch
held at Ube Machinery Corporation
headquarters on May 24, including
representatives from the Japanese auto
industry. Attendees witnessed demonstrations
of forming large vehicle parts. They were
also keenly interested in topics presented at
the technological briefings, specifically
Ube's proprietary Dieprest molding process
(for simultaneous in-mold lamination) and our IMC (in-mold coating technology).
1. MD1800S III Overview
We have entered the twenty-first
century, a time that some are calling the
environmental century, and there are
signs of increased demand for electrical
injection molding machines to replace
conventional hydraulic models. However,
designing larger machines is difficult
because of limitations in the capacity of
servomotors, ball screws, and other
components of the drive units. Ube
Machinery Corporation and Niigata Plastic Machinery Co.,
Inc., met the challenge
of producing larger electric presses by
developing drive technology for
electrical and mechanical control of
multiple servomotors, as well as devising
new power-transfer technology to handle
the increased drive capacity. This
innovation has culminated in the launch
of the MD1800S III, the world's largest
fully-electric injection molding machine,
powered by multiple motors.
2. Advantages
(1) Energy-efficient and
maintenance-free
Energy consumption has been cut
dramatically, using 40% to 60% less
energy for one cycle than comparable
hydraulic presses. Because no oil is used
in operation, oil leaks and related
problems are eliminated, supporting a
cleaner, quieter work environment.
(2) Shortening of fabrication cycles,
higher productivity
The unit boasts faster specifications for
injection molding. In addition, it
performs simultaneous operations of
certain processes in ways difficult for
hydraulic presses to achieve. Altering
the speed through highly precise
positioning with the multiple servomotors
makes it possible to keep the required
low-speed intervals to a minimum. This
dramatically shortens the molding cycle
time. Evaluation of actual molding
results demonstrates that the MD1800S III
completes cycles in 20% to 30% less time
than hydraulic injection molding machines
in the 3,000-ton clamping power class.
3. Technical features
A multi-servomotor design for the
world's highest clamping force: 16,600
kN, or 1,800 tons
Fully-electric injection molding
machines use servomotors for positioning
and to control speed and pressure.
Large-size models require drive control
for multiple servomotors, technology that
we alone pioneered.
In the MD1800S III, several
servomotors are distributed along the
shaft that requires enormous force, and
the power of each servomotor is combined
for drive control. Two servomotors power
the clamp shaft, three power the
injection shaft, and two power the
plasticizer. The result: an all-electric
injection molding machine with the
highest clamping force available in any
machine, and outstanding injection
performance. Supporting the larger
capacity of the drive supply are
innovations such as ball screws with
larger load capacity for this power
transfer method, as well as low-inertia,
large-diameter pulleys, and high-tension,
low-noise belts.
4. Main specifications for the MD1800S III
| 1. |
Clamping force |
17,600 kN (1,800 tons) |
| 2. |
Tie bar interval |
2,169 x 1,661 mm |
| 3. |
Mold platen length |
3,175 x 2,413 mm |
| 4. |
Screw diameter |
120 mm |
| 5. |
Injection rate |
1,413 cm3/sec. |
| 6. |
Injection force |
185 Mpa |
| 7. |
Dimensions (L X W X H) |
(L): 16.9 m W: 4.2 m H 3.55 m |
| 8. |
Weight |
197 tons |
| 9. |
Applications |
For molding of resins,
including large molded auto parts
such as bumpers |
5. Future prospects
For large-size machines, great
economic advantages accrue from more
efficient energy consumption and shorter
production cycles. We are active in sales
initiatives not only in Japan but
worldwide. Ube Machinery Corporation and
Niigata Plastic Machinery jointly market a full
line of fourteen fully-electric injection
molding machines, including eight midsize
units offering 30 to 450 tons of clamping
force, five large-size machines (650,
850, 1,000, 1,400 and 1,800-ton types),
or a 1,200-ton press slated for release
soon.
For more information
Ube Machinery Corporation,
Ltd.
1980 Okinoyama, Kogushi, Ube,
Yamaguchi 755-8633, Japan
Phone :
+81-836-34-5080
Facsimile:
+81-836-34-0666
Attn : Norihisa Okada, Injection
Molding Machine Sales Group
Phone :
+81-836-22-6276
Facsimile:
+81-836-22-6279
Attn : Manabu Shinano, General Affairs
Group, General Affairs Department
Phone :
+81-836-22-6465
Facsimile:
+81-836-22-6391
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