Box stop device

The invention discloses a box stop device. The box stop device comprises a support frame mounted on a frame, wherein a support shaft is fixedly mounted on the support frame, and is coated with a shaft sleeve; the shaft sleeve can rotate on the support shaft, and is fixedly connected with a stop rod; the outer end of the stop rod is fixedly connected with a stop plate; the shaft sleeve is fixedly connected with a swing rod; under the driving of a driving device, the swing rod can drive the shaft sleeve to forwards rotate or reversely rotate on the support shaft; the shaft sleeve forwards rotates on the support shaft so as to urge the stop plate to move to the outer side of a box on a transplantation platform positioned rightly above a stamp plate and to stop the box moving in the return direction of the transplantation platform; and the shaft sleeve reversely rotates on the support shaft so as to urge the stop plate to move to a height higher than the top of the box on the transplantation platform. The box stop device has the advantages of largely simplifying the structure, effectively stopping the box moving in the leaving direction of the transplantation platform and guaranteeing the box to accurately drop on the stamp plate.