Patent ID: 8866028

Claim:
A combination weighing device, comprising: N material treating units for receiving materials, outputting a weight value of materials and discharging materials according to the discharging control signal from a mainboard; the mainboard for performing combinatorial calculation periodically according to the weight value inputted from the material treating units, selecting material combinations based on the preset weight value during every period and outputting the discharging control signal to weighing hoppers participating in the material combinations to allow the weighing hoppers to discharge materials through corresponding discharging routes; chutes for defining the discharging routes, collecting the materials from the material treating units through the discharging routes, and discharging the materials to discharging hoppers; discharging hoppers for separately collecting materials discharged from the chutes during the same weighing period and send the materials to a packing machine; each of the material treating units comprising a linear vibrator, a feed hopper, and a weighing hopper, wherein each of the material treating units further comprises a weighing sensor used to weigh the materials in the weighing hopper, a processor and a A/D converter which is connected with the weighing sensor and the processor, a first set of the N material treating units are connected with the mainboard through a first data receiving and delivering communication converter of the mainboard and a second set of the N material treating units are connected with the mainboard through a second data receiving and delivering communication converter of the mainboard.