Introduction of servo system for core components of palletizing robot

In the past two years, with the rising labor costs in China, industrial robots have become increasingly important to the manufacturing industry. In 2017, the sales volume of industrial robots in China was about 136000, an increase of 92% year-on-year in 2016. Compared with South Korea, Japan and other countries, the density of industrial robots in China's manufacturing industry is low. It is expected that the average growth rate of China's industrial robot sales will exceed 20% in the next 5-8 years.

At present, the main reason why the use of robots in China is so low is that imported robots account for the main market (high price), while domestic robots started late, and the core components mainly rely on foreign brands, so the development is slow. But recently, with foreign robot companies setting up factories in China and cultivating Chinese talents, which is conducive to the diffusion of professionals and technology, Chinese robot enterprises are also developing rapidly.

Taking the palletizing robot as an example, the servo system is one of the core components of the palletizing machine. The servo system is the main power source of the palletizing robot. The servo system is mainly composed of servo motor, servo driver and encoder. Servo means "follow", which refers to the follow control of position, speed or torque according to the command signal.

In China, the servo system for palletizing robots is mainly monopolized by foreign brands, of which Japanese brands account for about 50%, European and American brands 30%, and Taiwan brands and mainland enterprises only 10%. Japanese enterprises include Yaskawa, Mitsubishi, Sanyo, Omron, Panasonic and other companies, mainly small and medium-sized power products; European and American companies, including Siemens, Bosch Rexroth, Schneider, etc., have a dominant position in large-scale servo; Domestic companies mainly include Huichuan, Delta, Easton and other companies, mainly small and medium-sized servo.

On the whole, there is still a gap between China's servo motor and Japan, Europe and the United States, mainly manifested in the lack of high-power products, insufficient miniaturization, unstable signal connectors, and the lack of high-precision encoders, which are also the main directions for domestic servo systems to attack light in the future.

The above industrial robot industry data comes from Ping An Securities, "the industrial robot industry chain has bottomed out, and domestic brands have risen in the big wave"