The invention relates to a device for automatically controlling the tube weight of a centrifugal
casting machine. The automatic device comprises an industrial touch screen, an electric cabinet, a weighing controller, a weighing sensor, an absolute value increment type
rotary encoder and a turning
ladle hydraulic pressure regulating valve, wherein the industrial contact screen is arranged on an operation
desk; the industrial contact screen is connected with a PLC (
programmable logic controller) in the electric cabinet by virtue of an
industrial Ethernet, so that the functions of setting the target tube weight, setting turning
ladle experience data, displaying the actual tube weight and correcting regulation parameters are achieved; the PLC is arranged inside the electric cabinet and is used for receiving the
target weight data, the adjusting correction parameter and the turning
ladle experience setting data coming from inputting; the analog quantity output port of the PLC controls the
casting turning ladle
hydraulic pressure regulating valve; the weighing controller and the weighing sensor are arranged on the centrifugal
casting machine and are used for detecting the tube weight after finishing casting; the absolute value increment type
rotary encoder is arranged below a casting fan-shaped ladle and used for detecting the
turning angle of the fan-shaped ladle; and the turning ladle
hydraulic pressure regulating valve is arranged at the hydraulic pressure valve stand of the centrifugal casting
machine, connected with the turning ladle hydraulic pressure mechanism of the fan-shaped ladle and used for controlling the turning of the fan-shaped ladle. By utilizing the automatic device for controlling the tube weight of the centrifugal casting machine, the automatic adjustment of the casting
pipe weight can be achieved according to a process demand.