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App. B—Commissioned Background Papers

Daiwa Securities America Inc.

Page -25-

application which Electric Mfg. , at

largely used light present, dominates

weight welding guns. the arc welding robot

Yaskawa applications

with its relatively welding robots for

low-p riced playback work on heavy plates

robot. while

Shinmeiwa developed arc Osaka Transformer developed

arc welding robots for work on more expensive, continuous path

sheets. control,

Kobe Steel arc welding

has produced a

robot.

Hitachi

had

produced two robot, and a duced a very

robots suitable for arc welding: low priced articulated playback competitive arc welding robot.

a sophisticated intelligent robot. Matsushita has intro-

With Matsushita entering the arc welding area and with Hitachi capable of substantially increasing its output, it is entirely possible that these two firms will ultimately dominate the arc welding market.

SPRAY PAINTING AND COATING

Painting robots are the third largest type of playback robots and

are now growing at as the arc welding

the same robots.

rate as spot welding robots but not as Spray painting and coating offer a rich

fast area

of application. of experience.

To become skilled, a coating worker required 2-3 years However, the poor working environment and the tendency

to a more educated society contributed to a developing skilled worker shortage. The necessity for a large percentage or rework made pro- duction planning difficult.

The industrial robot provided certain advantages in painting:

1)

They insured stability of product quality and therefore made

possible improved production planning and control. Despite the selection of the most skilled workman for finish coating, the quality of the finish varied according to the workers and the conditions of the day. In auto-

mobiles, the paint finish of a car, and especially its uniformity, is a determining element in the Japanese domestic consumer preference.

  • 2)

    They made possible a multi-product mixed batch coating line.

  • 3)

    They provided continuous production operation and reduced

the need for intermediate stocks.

4)

The

manual

workers

and

special

purpose

automatic

coating

machines tended to increase the use of paint to preclude uneven coating,

especially in complicated shapes.

In addition, special purpose auto-

matic coating machines tend to multi-product coating line. In a savings of 10-20% in the use

overspray paint on smaller products in a

the case of of paint has

spray painting an been effectuated.

auto body, Reducing

the amount

of paint reduced

on energy

consumption.

the

need

for

ventilation

and

therefore,

saved

  • ‚óŹ

    51

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