The automatic grease Filling machine consists of liquid storage tank, filling pipeline, filling valve, liquid level control, etc. The capacity size is controlled by the Electronic scale to adjust the rotational speed of the rotor pump, and is programmable controlled by PLC. The filling machine mainly consists of liquid storage tank, filling mechanism, push barrel mechanism, inlet roller conveyor, weighing mechanism, outlet roller conveyor, and control box. PLC controls the delivery of empty barrels, filling with the valve, weighing with the electronic scale, outputting the finished product, completing one filling process. The liquid storage tank is equipped with a feeding mechanism. The position of the float ball in the liquid storage tank is designed with two values, the lowest value and the highest value. When the float ball position is at the lowest value, feeding occurs; when the float ball position rises to the highest value, feeding stops. The filling valve is driven by a double-station cylinder, and fills in two stages. When the barrel is sent to the inlet roller conveyor, photoelectric switch 1 detects that the barrel is in place, the push barrel cylinder acts, and the empty barrel is pushed to the non-powered roller of the weighing mechanism. When photoelectric switch 2 detects that the barrel is at the filling position, the filling valve fully opens to start filling. When the filling weight reaches the set initial weight, the filling valve is half-opened for filling; when the filling weight reaches the set weight, that is, the required filling weight, the filling valve is fully closed. The push barrel cylinder acts to push the next empty barrel to the electronic scale position, and then pushes the filled barrel to the conveyor for transportation.

The automatic filling mechanism mainly consists of the head, end, end cover, shaft, container, cylinder, etc. The cylinder is a double-station cylinder. Due to the material being transported into the container by the rotor pump, when the cylinder is in the initial position, according to the filling speed or the fluidity of the material, the screw on the cylinder is adjusted. This position is the large-flow filling position. When approaching the filling weight, the cylinder acts for the first time, the distance between the sealing head and the end head becomes smaller, and the first stroke of the cylinder is 95-99% of the set target volume. When the filling weight is reached, the cylinder acts for the second time, the distance between the sealing head and the end head becomes 0, and the filling stops. The sealing head is in contact with the container without any gap, to prevent excessive impact force when the material falls. Uniform small holes are opened on the end head.

The automatic filling machine integrates functions such as conveying, metering, filling, recording, monitoring, and charging liquid. It is mainly used for selecting and setting the filling target volume, monitoring the filling process, processing alarm signals, and retrieving filling data. It realizes full automation and intelligence of filling at a certain ratio, and the upper computer sends the target volume and filling weight instructions. It uses an industrial mechanism with a communication board, providing RS422 communication ports and RS232 communication ports, and the communication ports are connected to the upper computer respectively. The communication protocol adopts query scanning mode. According to the production task, various initializations are carried out and the target volume is formed. The target volume includes the names, quantities, production volume, standard ratio, standard weight, etc. of each component. Then, the parameters are sent to the weighing instrument and the programmable controller. According to a certain time sequence, the starting of the weighing instrument and the filling gun is controlled. The upper computer reads the weight signal of the liquid filling scale and accumulates it. Based on the accumulated values of each component, the actual proportion is calculated and compared with the standard. The comparison and correction of each regulator's set value is made to ensure the system operates in the optimal filling ratio state.

The Liquid filling machine operates on the preset electronic scale. Containers are sent to the required filling guns using the transported containers. Then, the material is automatically added to the container for filling operations. A material electronic scale is installed under the container to weigh the material volume. The control system can automatically judge the weighing and feeding operation based on the detection results. The switch in front of the electronic scale can control the specific position of feeding, thus enabling the automation of filling operations. The filling control system mainly consists of material bin level detection and control, logical interlocking and protection control of related equipment, and electronic scale position detection and control. It can ensure the safe and stable operation of the entire electronic scale control system to a certain extent. The metering filling machine uses a frequency converter to control the feeding speed of the rotor pump Feeder. The material is inserted into the weighing container through the filling gun. When the container filling gun on the electronic scale is inserted and lifted at the instant, there is still some material in the air that has not fallen into the scale. By establishing a drop value for the Filling system, involving the lifting and receiving protection, PLC control is introduced based on PID control to output control quantities to control the feeding system's fast and slow feeding, the start and stop of the feeder, the opening and closing of the material bin door, and the actions of related control switches. Additionally, it needs to receive the relevant filling volume sent from the upper computer. The asynchronous machine receives the control instructions sent by the PLC to adjust the motor speed for material feeding to achieve variable-speed feeding. The material speed is controlled by the frequency change to measure the weight of the material in the weighing container in real time.