First, the working principle:

The working principle of central feeding system is to transport plastic raw materials from storage tanks to central dehumidification and drying system through centralized pipeline system, and then transport the dried raw materials to various injection molding machines. It can be used in conjunction with the central dehumidification and drying system to clean the conveying pipeline after dehumidification and drying, to ensure that there is no residual granular material in the pipeline, and to ensure the consistency of raw materials added to the injection molding machine while avoiding the resurgence of raw materials. Under the action of vacuum negative pressure, the original dust in raw materials will be filtered out by the dust filtering system, which ensures the air transportation of raw materials in the whole system and helps to improve the quality of molded products. At the same time, the transportation runs smoothly without material blockage.

The working principle of the automatic feeding system is to close the vacuum tube, start the motor, send plastic resin particles into the vacuum tube with low vacuum airflow, stop the motor, then discharge the particles into the hopper, and so on. In the designed control system, two feeding production lines can be controlled by a motor and switched by reversing valves. The two production lines can run independently or simultaneously. If both of them run at the same time, when the conveying of one production line ends, it is judged that the discharging of the other production line has ended, then the motor continues to rotate and the reversing valve reverses direction, thus feeding the other production line. In this way, the efficiency of control system and motor can be brought into play, and automatic feeding can be realized.

Second, the composition:

The central feeding system consists of a central console, a cyclone dust collector, a high-efficiency filter, a fan, a material selection rack, a substation, a drying hopper, a dehumidifier, a micro-motion hopper, an electric eye hopper, a material cut-off valve and an air cut-off valve.

The components of automatic feeding system are: power part, also called vacuum station; In the part of dust removal device, the combination of double dust removal and automatic dust removal are generally adopted; Raw material distribution station, also called material selection station; Suction bucket, also called suction bucket, is divided into vacuum bucket and electric eye bucket; Transmission pipeline; Vacuum pipeline; Central console; Protective device.

Third, the characteristics:

The central feeding system can automatically supply various raw materials to any multi-cavity injection molding equipment, which can include drying treatment of raw materials, color matching treatment and proportional utilization of crushed and recycled materials. It can realize highly automatic control, monitoring and so on. It can meet the production needs without stopping for 24 hours. At the same time, the central feeding system is simple to operate, and only a few people can control the feeding demand of the whole injection molding plant, which reduces a lot of labor costs. It can meet the requirements of different users, different workshop characteristics and different raw materials. Can design the best scheme according to the actual needs.

The use of automatic feeding system ensures the stable operation of the whole system, and there is no plastic moisture regain and material blockage. When used in conjunction with the central dryer (dehumidifier) system, the dry air can dry the raw materials again, so as to prevent the dried plastic from regaining moisture, and clean the conveying pipeline after each conveying cycle to ensure that there is no residual material in the pipeline. While avoiding the resurgence of raw materials, it also ensures the consistency of raw materials added to the injection molding machine. Under the simultaneous action of vacuum and negative pressure, the original dust of raw materials is filtered by the filter (dust collector) system, which is conducive to improving product quality.

I suggest you ask Da Rui International Machinery Company. It is good to be a central supplier.