Production system and production method of full-roll polyester pre-oriented yarn

The invention belongs to the technical field of chemical fiber textile, and relates to a production system and a production method of full-roll polyester pre-oriented yarn. The production system comprises a metering pump, a spinning assembly, a metering pump control unit, a spinning assembly heating unit and a signal processing unit. The metering pump control unit is connected with the metering pump and is used for adjusting and displaying the flow of the polyester melt in real time; the spinning assembly heating unit is connected with a cavity of a spinning box provided with a spinning assembly and used for heating a spinneret plate to the target temperature. The signal processing unit is connected with the metering pump control unit and the spinning assembly heating unit at the same time and used for starting the spinning assembly heating unit when the flow of the polyester melt is 0 and closing the spinning assembly heating unit when the flow of the polyester melt is larger than 0. According to the product