Liquid filling machine consists of stepping motor, gear pump filling head, conveyor belt and electrical control box, controlled by PLC programmable, the container is fed into the scale body at the same time when the motorized drum running, weighing module on the photoelectric switch detected by the container issued by the signal, the filling mechanism through the speed reducer to stay in the E stepping motor's output shaft is connected to the drive shaft of the ruler wheel pump, through the control of the stepping motor's running steps to achieve the Accurately control the number of revolutions of the gear pump to achieve the purpose of accurate measurement.

The automatic filling machine is an embedded industrial control and data acquisition weighing system, which is collected by an external weighing module and stored in an embedded database through a data processing program. The application program can obtain and update the status of each control point in real time through the processing of the database records, and issue commands to achieve the purpose of real-time monitoring and control.

Liquid filling machine adopts regulation to carry out the actual control of the weight of the program, according to the frequency converter operation mode to set its parameters, to achieve the purpose of automatically adjusting the speed of the PLC programmable controller in order to ensure that the filling process of the various parts of the device action of the accuracy and reliability of the PLC program is required to control the various weighing modules, relays, switches and solenoid valves. Integration of information technology accessory equipment, such as printers, scanning guns, RFID and other information identification equipment, to give the material into the weighing and dispensing process identifiable information.

Automatic filling scale integrates field management and control system, which can effectively control material filling in real time. Realize the real-time detection of filling weight and the real-time opening and closing of the solenoid valve in the filling process, and the effective microcomputerized management of data upload.

The automatic filling scale is composed of a feeding pump, a solenoid valve and a pipeline and a weighing system. When the liquid level is below a certain position, the solenoid valve opens, and the liquid flows through the feeding pump and the pipeline into the feeding tank. When the liquid reaches the height of the liquid level, the solenoid valve closes. When the liquid level reaches a certain set weight, the float level control sends a signal to power off the solenoid valve and close the valve body.

Automatic filling scale set the standard weight and error weight of the raw materials selected in the formula and specify the equipment for weighing the selected raw materials, which is composed of a filling gun device, a PLC control system part, an electronic weighing platform, a filling rack, and a conveying equipment.

The automatic filling machine adopts Siemens PLCS7-300 system, which consists of weighing module, PLC system, touch screen, alarm system, on-site pressure change, solenoid valve and other components, and the operating station adopts DELL industrial computer WINXP operating system, and designs the process control of filling scanning, filling management and other process control with programmable controllers, and installs the software based on Configuration King based on the relevant database information service. The monitoring interface of the automatic filling production line, the operation interface is simple and applicable, easy to modify, and realizes the complete man-machine dialogue state. the PLC control system and the operation station can carry out rapid communication and setting through the RS-422/485 interface.

Automatic filling machine can meet the user's requirements in various aspects, with perfect operation, alarm records, all data can be online query and print, and expand the channel switching, shift automatic conversion and other auxiliary functions. Perfect database and report function, can modify the query and print reports can be online. The operator can modify or re-enter the target value being used online, and the system will run according to the new filling weight after confirmation.

Automatic filling scale is realized by weight sensing and the input pulse frequency fast or slow, when the frequency of the pulse occurs to decrease, the speed of the stepper motor decreases; when the frequency grows, the speed is accelerated. In order to achieve the purpose of measuring size adjustable and improve the accuracy of measurement, the screw's speed is required to be adjustable and the position is positioned accurately, the stepping motor is used to control the screw's speed and rotation, which not only simplifies the mechanical structure, but also makes the control very convenient. Without overloading, the speed and stopping position of the stepping motor only depend on the frequency of the pulse signal and the number of pulses, and are not affected by the change of load.