Material weighing device and method

The invention discloses a material weighing device. The material weighing device comprises a rack. A hopper, a weighing hopper, a feeding mechanism and a feeding bin are arranged on the rack. A discharging mechanism is arranged in the weighing hopper and comprises taking-out hoppers and a discharging mechanism body. The multiple taking-out hoppers are different in size and are arranged on tracks with which materials on the feeding mechanism fall on the weighing hopper. The discharging mechanism body controls the materials in the taking-out hoppers to fall into the weighing hopper. According to the material weighing device and a material weighing method, a taking-out method is adopted, and the accurate materials are finally discharged; when the whole device runs, as a low-speed feeding link is removed, the weighing time is greatly saved, and the packaging efficiency is improved; although a discharging device is designed and a part of cost is increased, the material weighing accuracy is greatly improved, the automation degree is high, the indexes of the whole industry are increased, and the large market value is achieved.