The dual-speed automatic Filling machine achieves precise liquid filling by utilizing modern precise stepping control technology and a precise and agile filling supply mechanism. Through PLC control and a reasonable filling gun lifting structure, it realizes precise quantitative liquid filling automatically. Its control system includes a touch screen, PLC, stepping motors, etc. The touch screen provides users with a simple and clear operation interface, enabling settings for liquid selection, filling, packaging, etc. Through the PLC control system network connection, the operation stations of each process are linked. Each process is equipped with an operation station, which connects the equipment of each process. The operation station realizes the functions of each workstation. The 2-stage Electronic scale control method is adopted, and according to the position of the bucket, it communicates with the PLC through the Modbus 485 communication protocol, displaying the operating status of the equipment at all times, and setting various operation parameters for starting and stopping the equipment, etc.

The Liquid filling machine realizes that the conveying mechanism transports the bucket to the photoelectric switch, stops the conveying mechanism, and after weight sensing processing, sends the bucket information to the PLC. The end actuator of the PLC terminal picks up, clamps the bucket, and performs the filling process. Finally, it aligns the bucket with the discharge gun and returns to the starting point to wait, repeating this cycle for the next bucket. Eventually, it realizes the automatic and continuous cycle process of automatically loading the buckets. To accurately control the entire operation process, weighing sensors are installed in the lifting cylinder, clamping cylinder, and filling cylinder to detect the operating status of the filling cylinder and the clamping cylinder. The weighing filling machine consists of a weighing instrument, a preparation bin, an electronic scale, a bucket clamping mechanism, a cutting device, a discharge valve, a release valve, and a weighing module. The preparation bin is used for material storage and provides a nearly uniform material flow. The valves are located at the bottom of the preparation bin and are used to inject the liquid from the filling gun into the bucket on the electronic scale through the lifting cylinder. The cutting device provides fast, medium, and slow three levels of feeding during weighing. The scale body mainly consists of an electronic scale, a weighing bracket, and a weighing module, completing the conversion from weight to electrical signals and transmitting them to the control unit. The bucket clamping mechanism's function is to clamp the filling bucket, allowing all the weighed materials to fall into the filling bucket.

The weighing filling machine consists of five parts: cleaning, filling, sealing, packaging, and inspection. The cleaning process involves cleaning the returned buckets, first injecting a special cleaning liquid into the empty bucket, cleaning and disinfecting the bucket, then pouring the cleaning liquid out through the bucket transfer machine, and sending the cleaned empty bucket to the filling section. The filling section is controlled by PLC to activate the electromagnetic valve to conduct electricity, thereby controlling the air pressure valve to fill the bucket. When the liquid level reaches the standard, the air valve stops filling, and the filling port lowers the filled bucket, and then the bucket is sent to the next processing section by the conveyor belt. The sealing section fixes the bucket cover on the bucket opening to make the screw thread of the bucket cover coincide with the screw thread of the bucket opening. Through the friction chain of the conveyor belt, the bucket rotates, and the bucket cover is tightened to achieve sealing. The packaging section consists of two fixed packaging paper shafts. When the bucket is sent to the packaging position, the packaging tape adheres to one end of the bucket on the side wall, and then rotates the bucket body to make the packaging paper wrap around the bucket. After wrapping once, the packaging tape is cut, and the end of the packaging tape is fixedly adhered to the bonding point. The packaging section is completed. After processing, the product passes through the photoelectric sensor detection in the inspection section for defects, including external damage to the bucket body, poor sealing of the bucket cover, poor packaging, and poor filling liquid level, etc. Finally, the mechanical hand will move the不合格 products to the designated area， and the qualified products are packed. Thus， the entire processing process is completed.