Printing iron, coating iron production automation progress, continuous production of box type printing iron drying room can not adapt. Tunnel drying room is good in thermal power and production capacity, and can match with high-speed printing and coating machinery. The leading foreign manufacturers include LTG in West Germany, Sofitel in Italy, Pell in Britain, DIC in Japan, etc. Not many products have been finalized in China. However, most of them are planned and made by the factories themselves, and the structure and power are different.

The technology of frequency conversion and speed regulation is widely used in the electric drive system. For the synchronous control of a certain type of iron printing drying room production line, PLC, frequency converter and three-phase communication asynchronous motor are selected to plan the synchronous control system. Through algorithm planning, the synchronous operation of drying room and iron printing machine is realized. The experimental results show that the control accuracy and stability have achieved the expected effect, and the requirements of the production process are satisfied.

Iron printing drying room is a kind of boring equipment widely used in iron printing profession. The dryness of various food packaging iron boxes, paint cans, etc. can not be separated from the iron printing drying room. According to the production mode of iron printing drying room, it is divided into intermittent type and continuous type. In the past, China's iron printing drying houses mostly used intermittent production. Its defects are: long boring time, small production capacity, etc.