Multi-head combination weigher, also known as combination weighing instrument, is used for rapid quantitative weighing and packaging of granular, strip, and irregular materials. It is composed of multiple independent weighing units with feeding and discharging structures. We will focus on him below. The components are broken down one by one: 

Composition of combination weigher 1 Upper feeding hopper 2 Material photoelectric detection switch 3 Main vibration plate (main vibration machine) 4 Line vibration plate (linear vibration machine) 5 Storage hopper 6 weighing Heavy bucket 7 drive equipment (stepping motor) 8 feeding trough 9 collecting hopper 10 motor drive board 11 main board 12 A/D module

Working principle of mixing weigher:

1. In the upper feeding hopper, the material is vibrated through the main vibrating plate, so that the material is distributed on the conical funnel to the linear vibrating plate. 

2. When there is no or insufficient material in the line vibration plate, it will be detected by the material photoelectric detection switch, which is to send a feeding signal to the main board. Then send the feeding signal to the material conveyor through the main board to feed the material until the photoelectric detection switch detects that there is material. 

3. The line vibration machine vibrates, drives the line vibration plate to vibrate, adjusts the appropriate amplitude and vibration time to send a certain range of material weight to each A storage hopper. 

4. The driving device is the stepping motor, and the door of the storage hopper is opened, and the material is sent to the weighing hopper. When there is nothing in the weighing hopper below When the material in the weighing hopper is insufficient, the storage hopper will automatically open the door and put the materials in the weighing hopper. 

5. The material is in the weighing hopper, and the weight signal is generated by the sensor, and then transmitted to the main board of the control device through the lead wire. The CPU on the computer reads and records the weight of each weighing bucket, and then through calculation, analysis, and combination, filter out the closest to the target weight Combination weighing hopper, when receiving the unloading request signal sent by the packaging machine, the CPU sends a signal to start the weighing hopper motor driver. Open the selected weighing hopper and unload the product into the hopper into the packaging machine (if there is a collecting hopper, after the weighing hopper is assembled Directly discharge the material to the collecting hopper, and start the collecting hopper motor to discharge the material to the packaging machine when there is a request signal. 

6. When the weighing hopper (collection hopper) finishes discharging the materials, the combination weigher will send a discharging signal to the packaging machine, and the packaging machine will receive After the signal has been discharged, it will start to seal and cut the bag. When the packaging mechanism is complete, a bag will be sent to the combination weigher to request a signal to call the group. Weighing and unloading, so cycle.