Intelligent automatic cleaning control method for fully electric injection molding machine and system

The invention discloses an intelligent automatic cleaning control method for an injection molding machine. After the material tube temperature, the injection molding machine work mode, the injection seat position and the screw rod cold starting protection time meet the cleaning conditions, an injection servo motor is driven to operate in a positive direction for driving a screw rod to realize injection into the air, and the injection into the air is completed when the screw rod reaches the most front end of a material tube; a material storage servo motor is driven to store materials, the injection servo motor is driven to operate in a reverse direction for enabling the screw rod to reset when the melt pressure in the material tube reaches the preset cleaning back pressure value, and the cleaning and material storage can be completed; and the injection into the air and the cleaning and material storage are alternately carried out until the cleaning is completed. The invention also provides a device for realizing the method. The device mainly comprises a main controller, an injection servo controller, a material storage servo controller, a temperature control module, a frequency converter, a position sensor, a pressure sensor and a material tube heating device. The method and the device provided by the invention solve the problems that in the technical process of completing the manual cleaning through the experiences of operators, the screw rod can be easily damaged, the product quality and the precision are reduced, and the production efficiency is low.