Optical fiber laser cutting head based on laser cutting system

The utility model discloses an optical fiber laser cutting head based on a laser cutting system. The optical fiber laser cutting head comprises an optical fiber connecting pipe, a focus lens column, a mounting plate, a cooling module, an external cooling device and a laser cutting head body. Compared with the prior art, the utility model has the following beneficial effects: the external cooling device is arranged, and the auxiliary fan is started to generate airflow to cool the surface of the focus lens column, so that the surface of the focus lens column is quickly cooled, and the problem that a lens in the focus lens column is in a high-temperature state for a long time and is aged is further prevented; and therefore, the effect of assisting the cooling work of the focus lens column and the laser cutting head through the external cooling device is achieved, it is guaranteed that the focus lens column and the laser cutting head can be rapidly cooled, the problem that the focus lens cannot be rapidly cooled