The utility model relates to the technical field of
food packaging, in particular to an automatic quantitative
food packaging device which comprises a mounting frame and a material
pipe, a material box is fixedly mounted on the mounting frame, a PLC (
programmable logic controller) is fixedly mounted on the mounting frame, a fixing frame is arranged above the material box, and a quantity control mechanism for weighing
food packaging quantity is arranged on the material box. The quantity control mechanism comprises a
pressure sensor located on the installation frame and a
photoelectric sensor embedded in the fixing frame. Food entering the material box is weighed through the
pressure sensor, a certain height of the fixing frame can be preset in advance according to the weight of the food needing to be quantitatively packaged every time, and whether the food fed into the material box every time reaches the preset height or not is monitored through the
photoelectric sensor. By fixing the inner volume of the material box, the weight of the food filled in the material box at a time is within a set packaging
weight range, and it is not needed that a
pressure sensor needs to measure the weight of the food one by one to complete quantitative packaging every time packaging is conducted.