On-line weighing device for tobacco stem removed by tobacco machine

The utility model discloses a tobacco machine rejected tobacco stem on-line weighing device which comprises a weighing detection unit installed at the bottom of a tobacco stem box falling channel. The weighing detection unit comprises a mounting bracket which is fixed on the tobacco stem box falling channel; the receiving plate is arranged at the lower end of the tobacco stem box falling channel; the weighing sensor is fixed to the center of the bottom of the material receiving plate. The 90-degree rotary cylinder is fixed on the mounting bracket, and an output shaft of the 90-degree rotary cylinder is fixedly connected with the weighing sensor through a connecting strip; the two-position five-way electromagnetic valve is fixed on the mounting bracket, and the air outlet end of the two-position five-way electromagnetic valve is correspondingly connected with the air inlet end of the 90-degree rotary cylinder; the first input end of the controller is connected with the output end of the weighing sensor, and th