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Abstract In order to improve the automation level of the magnetron antenna welding of the microwave oven, the control system was developed for microwave oven magnetron antenna welding machine. MITSUBISHI FX3 U-64 MT was used as the core controller and a touch screen was used to be the man-machine interface to realize the control of the external hardware of the solenoid valve, cylinder, motor and inverter resistance welding machine. The welding equipment consisted of frame, transmission mechanism, welding power supply box, control mechanism and sensor. The control system had functions of emergency stop, warning, temperature detection and so on. The test results showed that the system had the characteristics of friendly man-machine interface, simple operation and high automation level. The welding speed reached 2 s a piece while the defect rate was 0.4%.
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Received: 18 September 2020
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2019, Vol. 32 
