Design of Control System for Precision Parts Cleaning Equipment Based on PLC

The traditional cleaning process of precision parts is completed by manual operation and ultrasonic machine. In order to solve problems such as high labor intensity, low efficiency, inaccurate solvent injection and organic solvents are harmful to human health, etc. A precision parts cleaning equipment with ultrasonic cleaning technology as the core was designed. The automatic control system for equipment takes Siemens PLC as the core, uses mechanical arm to cooperate to grasp parts, uses weighing method to inject cleaning solvent, and uses Siemens HMI to realize human–machine interaction function. A simple and effective filtering algorithm is designed to ensure more accurate cleaning solvent injection. The field test shows that the equipment can adapt to the field cleaning environment, the control system has reasonable functions and can clean according to the corresponding process, which greatly reduces manual participation and improves the cleaning efficiency.