History of the DAIHEN Group
We are focused on developing our businesses globally on the
three pillars of power transmission & distribution products,
advanced components, and welding & mechatronics.
● Corporate history
1919 1920
1940
1960
1970
● November
1919 The Company is established in
Nakatsucho, Osaka prefecture.
1990
1973 The Mie Plant is completed and begins full-scale production
of high-capacity, extra-high-voltage transformers.
2000
● December
July 1930
A welding machinery plant is
completed in Settsu.
● October 1961
The company’s shares are
listed on the Tokyo Stock
Exchange.
● December 1967 The Chitose Plant is
completed.
●
July 1961
The company system and vice-president
system are introduced.
● October 2003 Certification of ISO 14001 registration
● October 2007 The Rokko Plant is completed with the
relocation of the Settsu Plant.
●
May 1980
Production of arc welding robots begins.
● November 1982 The Settsu Robot Plant is completed.
● December 1985 Osaka Transformer Co., Ltd. is renamed
DAIHEN Corporation.
● November 1987 The company begins production of RF
plasma generators for semiconductor
manufacturing.
● November 1987 The company is awarded the Deming
Application Prize.
June 2001
Power receiving
and distribution
facilities
Automated distribution
systems
Power receiving and
distribution systems
● Product development history
2010
1995 Certification of ISO 9001 registration
●
The plant is relocated to
its current location in Juso.
● March 1934 Production of electric
welding machines begins.
●
1980
DAIHEN Corporation began manufacturing pole-mounted transformers in 1919 by instituting a
dedicated mass production system. Since then, the company has been developing a series of products
that respond to the needs of society. These products include high-performance welding machines
incorporating electronic technology that grew out of transformer manufacturing as well as various
industrial robots and components for semiconductor manufacturing systems, all of which are fueling the
growing trend toward automation.
Today, the DAIHEN Group comprises 32 companies and is actively working to develop its global
business while applying its energy conversion and control technologies to the telecommunications and
environmental markets.
Switch
terminal unit
Power monitoring and control systems/
communications equipment
Pole-mounted automatic
vacuum switch
Power center
Substation
device
Power receiving &
distribution
Power monitoring
system
Control &
telecommunications
Switch terminal unit
(with sensor)
Switches
Pole-mounted
transformer
Pad-mounted
multi-circuit vacuum
switch
Automatic voltage
regulator
Transformers
Pole-mounted transformer with
thermal spray-coated tank
Amorphous
pole-mounted
transformer
Oil-immersed
power transformer
AC arc welding
machine
RF generator for
plasma applications
Cast resin
transformer
Top Runner transformer
Step voltage regulator
for automated
distribution system
Dispersed
power products
PV inverter
30 kW
high power
RF generator
RF generators/matching boxes
Power
distribution
Pole-mounted automatic
vacuum switch (with sensor)
CW microwave generators
and automatic tuners
Power supply
products for
plasma
generation
High-capacity
extra-high-voltage
transformer
Vacuum robots
High-power microwave
system
Large vacuum robots
Microwave system
for plasma applications
Large glass panel transfer
vacuum robot
Wafer transfer
vacuum robot
Multipurpose
handling robot
w/40 kg payload
Vertically articulated
type arc welding robot
LCD panel transfer robot
Clean transfer systems
Factory automation systems
THOR-T
Cartesian-coordinate
arc welding robot
Ideal Robot for arc
welding applications
Multipurpose handling robot
w/200 kg payload
Arc welding robots
Submerged arc welder
(Automelt)
Mechatronics
Handling robots
Inverter control
super plasma
cutter
Advanced
Component
Businesses
Clean
transfer
products
Wafer transfer vacuum robot
Clean transfer robots
Wafer transfer
clean robot
New
Businesses
VHF generator
RF automatic matching box
Pad-mounted transformer
Power
Transmission
&
Distribution
Products
Businesses
Air plasma cutters
Portable inverter-controlled
air plasma cutter
Spot welding machines
Automatic MIG welder
with fuzzy-logic inverter
Arc welders
Metalworking
Inverter-controlled DC
spot welding machine
AC/DC pulsed
MIG welder
Welding &
Mechatronics
Businesses
Welbee Inverter
welder
● Principal subsidiaries and affiliates
19 companies in Japan
Shihen Technical Corporation
Kyuhen Co., Inc.
• DAIHEN Industrial Machinery Corporation
• DAIHEN System Corporation
• DAIHEN Welding and Mechatronics
System Corporation
13
14 companies outside Japan
DAIHEN Stud Co., Ltd.
DAIHEN Electric Machine
Co., Ltd.
• Osaka Fuse Co., Ltd.
• Minami Electric Co., Ltd.
• DAIHEN Technology Institute
DAIHEN Technos Co., Ltd.
Hanshin Yosetsu Kizai Co., Ltd.
• Daihoku Industry Co., Ltd.
• DAIHEN Business Service Co., Ltd.
• DAIHEN Logistics Co., Ltd.
Daiki Corporation
DAIHEN Engineering Co., Ltd.
• DAIHEN Welfare Enterprise Co., Ltd.
• Daiichi Seiko Co., Ltd.
DAIHEN, Inc. (U.S.A.)
OTC DAIHEN Europe GmbH (Germany)
• OTC DAIHEN Asia Co., Ltd. (Thailand)
• DAIHEN Electric Co., Ltd. (Thailand)
• OTC DAIHEN Bangkok Co., Ltd. (Thailand)
DAIHEN Advanced Component, Inc. (U.S.A.)
Mudanjiang OTC Welding Machines Co., Ltd. (China)
• OTC (Taiwan) Co., Ltd.
• OTC Industrial (Shanghai) Co., Ltd. (China)
• DAIHEN Korea Co., Ltd.
OTC Industrial (Qingdao) Co., Ltd. (China)
DAIHEN OTC (Beijing) Co., Ltd. (China)
• DAIHEN Advanced Machinery (Changshu)
Co., Ltd. (China)
• OTC DAIHEN India Pvt. Ltd.
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CSR Report 2011
CSR Report 2011
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