Doctor bar cut-off device

The utility model belongs to the technical field of a tool for producing a doctor bar, and particularly relates to a doctor bar cut-off device. The doctor bar cut-off device comprises a stander, wherein the stander is provided with a soleplate, a wire inlet hole and a wire outlet hole, which are used for a doctor bar to get in and out, are formed in the soleplate, a cutter holder is arranged on the soleplate, a cutter air cylinder is arranged on the top of the cutter holder, the output end of the cutter air cylinder is connected with a cutter, and the cutter is arranged above the wire outlet hole; the front end of a sensing plate is perpendicularly intersected with the extension line of the wire outlet hole, the rear end of the sensing plate contacts a sensor, and the sensor is connected with a jacking air cylinder and the cutter air cylinder. The doctor bar cut-off device has beneficial effects that the doctor bar can be automatically cut off, the doctor bar can be conveniently collected, and the production efficiency can be improved.