The metal powder Batching system mainly involves the process of raw material measurement and transportation. The raw material measurement process first controls the time at which each screw conveyor discharges its internal materials into the weighing hopper machine according to the weighing requirements, thereby controlling the amount of materials entering the weighing hopper machine, completing one weighing process, until the specified number of weighings required for each raw material transportation is completed. After each weighing of the weighing hopper, the feeding process is carried out, controlling the transmission of the screw and its motor, transporting the mixed materials to the weighing hopper machine, and then opening the valve on the weighing hopper machine, allowing the mixed materials to be distributed through the distributor of the weighing hopper machine for mixing.

When the screw transports the materials to the outlet of the hopper, real-time weighing is carried out. The screw conveyor continuously conveys materials forward. The valve opens and closes according to the weight of the screw, sending signals to close it, and the output relay is energized, making the indicator light red, indicating that the batching is completed. The output relay drives the DC motor to rotate separately. The PLC sets the batching amount through the weighing module, making the DC motor start in sequence according to different materials. When the hopper is full of materials, the output relay is energized, opening the hopper, and the materials flow automatically into the screw conveyor. When the hopper is empty, the detection switch sends a signal to open it, driving the feeding switch to open, automatically adding materials to the hopper, and closing it when the hopper is full.

During each weighing cycle of the batching machine, the weighing hopper machine automatically resets the gross weight to eliminate the weighing error caused by the adhesion of the materials. When the machine stops, the processing function is set to ensure that the materials in the weighing hopper machine are removed. On the one hand, it can ensure that the weighing hopper machine is empty when the next machine starts, and avoids the materials remaining in the weighing hopper machine for a long time and condensing on the wall of the hopper due to moisture absorption. When the feeding is set, first, coarse materials are fed in, and the system adopts closed-loop control. When the given weight does not reach 95% of the rated quantity, the coarse material inlet valve remains open, and the feeding speed is fast. When the weight reaches 95%, the weighing module sends a signal, and through the actuator, the coarse material inlet valve is closed. At this time, the fine material inlet valve automatically opens, and when the weight reaches the rated value, the fine material valve is closed, and the weighing is completed.

During the production process of the batching system, there is a hopper above the screw. When the screw moves, the materials in the storage bin are dropped onto the screw by the rotating device of the conveyor. The screw conveyor is driven by the control motor, and the speed sensor gives an electrical signal proportional to the frequency and the speed of the screw. An Electronic scale is installed below the conveying screw, and an output voltage signal proportional to the weight of the materials on the screw is given. The weighing module receives the speed signal and weight signal of the screw, calculates the instantaneous flow and cumulative flow of the materials on the screw and displays the result, and compares it with the set flow value. Through the weighing module, an output current control signal is generated, and the power amplifier controls the motor speed, making the material batching amount stable at the set value. The materials in each raw material storage bin are mixed in a certain proportion and sent to the next process, and the batching is completed.