The automatic liquid Filling machine is designed as an intelligent Filling system for liquid packaging at the front material handling line of the barrel filling production line. The barrels are conveyed in rows from the front through the conveyor belt, and through the row unit, the products in each row are aligned. The alignment device is driven by a rotating cylinder. When the beam-type photoelectric switch at the front detects the arrival of the product, the rotating cylinder drives the alignment plates to align the entire row of products. After that, the products are basically arranged neatly. Then it enters the filling unit. When the Electronic scale detects the arrival of the barrel at the position, the weighing instrument automatically reads the blank weight and automatically removes the blank, and the filling gun automatically descends to start rapid filling. When it approaches the target weight, it switches to slow filling, and when it reaches the target weight, it automatically shuts off. Then the product continues to be driven by the conveyor belt and reaches the upper cover unit section. When the beam sensor detects the product, the PLC starts to calculate the distance of this row of products. When this row of products is transported to a certain distance at the front end of this section of the belt, the upper cover unit starts to cover, and then the product falls into the barrel. The barrel is located below the upper cover unit. The movement direction is horizontal transportation. The barrel is pressed and sealed by the pneumatic presser on the cover press machine to complete the filling process. Through the upper cover unit and others, the filling machine is sealed with the product. Then, the subsequent rows of products continue to be transported forward into the upper cover unit during the running process, which is the same as the upper cover unit. The automatic filling machine uses a common liquid packaging design. The weighing module converts the actual weight into a millivolt electrical signal and sends it to the weighing instrument. It converts the analog electrical signal into a digital electrical signal and compares it with the set value on the panel. Through the PLC output switch signal to control the coarse and fine filling mechanisms to perform fast or slow filling or stop filling, thus completing the quantitative filling process. After the barrel is clamped by the barrel clamping mechanism, the material is automatically filled from the weighing hopper into the barrel, and then the barrel is released onto the cover press machine for sealing. Thus, the automatic weighing and filling process is completed. The visual search mechanism can realize the entire process of automatic opening, automatic lowering, automatic fast and full-speed filling, automatic detection of leakage, and automatic sealing of threaded covers, etc., achieving full automation of packaging. The main part uses an environmentally friendly frame, a visible window, an automatic lifting and moving door for barrels, and a sealed space can be formed during filling. The electrical control part consists of a PLC programmable controller, a weighing module, and a visual system, with strong control ability and high automation level. It has functions such as no filling without barrels, not filling when the barrel mouth is not accurate, and avoids waste and pollution of materials, achieving the integration of mechanical and electrical systems of the machine.

During the filling process of the Liquid filling machine, the identification of the barrel identity is carried out using a portable scanner to scan the barcode of the barrel to be filled one by one. The barcode data is sent by the weighing module to the server to obtain the barrel archive data, and then sent to the filling scale through the metering module. The weighing module stores the data to improve the performance of filling. The barrel archive data is stored in a chip, which can be updated individually or in batches. The data is read from the chip through the interface of the weighing module. When the barcode of the barrel is scanned before filling, the barrel archive data is directly read from the chip, and the filling process is not normal, the filling record is also stored in the chip and uploaded to the server after the communication is restored. The serial port processing is responsible for receiving the polling signal sent by the server to the base station and giving an answer. If the communication frame is a data frame sent by the server to the base station, the data sent by the weighing module is directly sent to the serial port sending buffer, and the received data is verified and simply parsed before being sent to the serial port receiving area to ensure the stability of the signal.