How does Multihead Weigher Work?

As a Combination Weigher Supplier, share with you. In the 1970s, the Japan Agricultural Association put forward the subject of weighing green peppers to relevant weighing companies. In Japan, green peppers are usually sold in supermarkets in the form of quantitative packaging in bags. If the quantitative value of each bag of green pepper is 120g, it is very difficult to pack 120g accurately. Because the weight of a single green pepper is heavier and the difference is large, less installation is related to the interests of consumers, and more installation is related to the cost of the enterprise. The traditional method is manual weighing, that is, weighing on a static electronic scale. A green pepper followed by a green pepper is added to 115g. It is almost impossible to find a 5g green pepper to add, so you must weigh from 115g. Take a smaller green pepper and add another larger green pepper. If the weight is much more than 120g or less than 120g, the above work needs to be repeated, so the weighing efficiency is extremely low, and it is difficult to achieve a result close to the target weight. After a lot of investigation and research on this, the technicians successfully solved the above-mentioned green pepper weighing problem by using the principle of combined weighing.

Multihead Weigher

Working principle of multihead weigher

1. The hoist feeds the material through the loading pan to concentrate the materials on the main vibrating pan, and then through the vibration of the main vibrating pan, the materials are evenly distributed on the main vibrating pan to the linear vibrating pan. 2. When the material in the feeding tray is not or not enough to be detected by the material level photodetector, a signal is sent to the main board, and then the main board sends a feeding signal to the hoist for feeding. 3. The line vibration machine vibrates, and the material is sent to each buffer hopper through the amplitude and the line vibration feeding time. 4. The stepping motor works, open the buffer hopper and send the material in the hopper to the weighing hopper. When the weighing hopper participating in the combination discharges or when the material in the weighing hopper is insufficient, the material in the buffer hopper will automatically flow into Weighing in the bucket. 5. In the weighing hopper, the material generates a weight signal through the sensor, which is processed by the AD module to become a digital signal and transmitted to the main board of the intelligent control device through the data bus. 6. The CPU on the main board reads and records the weight of each weighing hopper, and then selects the combination weighing hopper closest to the target weight through calculation, analysis, combination, and screening, and sends out that the combination weigher has been weighed and the material is ready to be placed Ready signal of the material. 7. When the CPU receives the feeding permission signal from the packaging machine, the CPU sends a command to start the driver to drive the stepper motor, open the selected weighing hopper, and discharge the material into the chute into the collecting hopper. If there is no collecting hopper, it will directly enter the packaging machine and send a discharge signal to the packaging machine that the material has been discharged. 8. After the weighing hopper is discharged, the buffer hopper will replenish, weigh, and combine the weighing hopper in time to prepare for the next discharge.

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