Auxiliary tool changing mechanism of plate shearing machine

An auxiliary tool changing mechanism of a plate shearing machine comprises a tool taking shaft, an outlet guide wheel and an internal guide wheel, the tool taking shaft is installed on a shearing tool of the plate shearing machine, the outlet guide wheel is installed on one side of an outlet of the plate shearing machine, the internal guide wheel is installed on a lower tool rest of the plate shearing machine, and the outlet guide wheel and the internal guide wheel are consistent in height on the plate shearing machine. An internal guide wheel is installed on the lower knife rest, and a knife taking shaft is connected to the shear knife. After the shear knife is detached, the shear knife is lifted and placed on the internal guide wheel through the knife taking shaft, is pulled out in the direction of the outlet guide wheel, and is completely pulled out for replacement after being connected along the outlet guide wheel. The tool changing device is simple in structure, greatly improves the tool changing efficie