The quantitative solution Filling machine is designed and assembled according to the principles of design and assembly. It uses servo motors to drive ball screws, and the flow distribution module adopts cone valve type one-way valves; the liquid level tracking module is driven by stepper motors to achieve ball screw transmission; the automatic control uses widely applied PLC as the control center; the detection module adopts the method of automatic weighing, and uses a human-machine interaction interface to conveniently select and call filling parameters, and intuitively obtain the filling results. The Liquid filling machine fills each packaging bucket. The servo motor rotates to generate driving force, which is transmitted through the ball screw to drive the piston rod to move up and down. The ball screw and the piston rod are connected by a slider to ensure the stability of the slider movement. A linear guide rail is installed on the left side of the slider. Under the drive of the motor, the piston rod of the piston-type metering filling gun moves up and down reciprocally. The metering filling gun is of a cylindrical structure, and the piston rod movement distance corresponds to the filling volume and liquid volume of the filling gun. A one-way valve is selected as the flow distribution mechanism. During filling, the one-way valve at the inlet opens, and the one-way valve at the outlet opens. During liquid filling, the one-way valve at the outlet opens, and the one-way valve at the inlet opens, thus completing the liquid suction and filling process. The filling nozzle is connected to the flow distribution structure through a steel wire hose. The filling container is placed on a tray, and the tracking module uses stepper motors and ball screws. The ball screw converts the rotation of the stepper motor into the up and down movement of the tray, thereby ensuring that the distance between the nozzle and the liquid surface of the container is constant, reducing splashing and foaming during the filling process. On the human-machine interface, by changing filling parameters such as filling volume and liquid filling speed, PLC can send corresponding control signals to the servo motor and stepper motor according to the input parameters, achieving different filling parameters. 

The automatic filling machine is an Electronic scale Filling system composed of PLC, touch screen and various electrical components. It can achieve automatic control and manual control of the system, and can perform control tasks such as starting, stopping and emergency stop of a single device at the site. Through PLC, the control of motors and the driving of filling guns is realized. Using pneumatic gates and the pistons on the filling gun suction tips, based on the total running time of the cylinder from full closed limit to full open limit, as well as the actual running time of the motor, the current opening degree of the gate of the filling gun is determined according to the working time, and the motor is made to rotate forward until the limit switch is activated. At this point, the opening degree of the gate of the filling gun is approximately 90%. The opening degree value is set through PLC. When the scale is empty, the discharge valve opens, and the motor transports the liquid in the electronic scale conveying pipe into the container. PLC displays the target amount of the material in the scale. When the material quantity measured by the scale is equal to the set value, the feeding relay is disconnected, and the feeding valve is closed. When it is necessary to fill, the operator presses the "start" button for control. The start signal is output, the relay is connected, the valve is opened, and the discharge is carried out. The discharge value is displayed. When the actual weight is equal to the set value, the discharge is completed, and the above steps are repeated.