Contact protection device for aluminum tube laser cutting machine

The invention relates to the technical field of laser cutting machines, in particular to a contact protection device for an aluminum pipe laser cutting machine, which comprises a rigid sleeve seat, an inductance ring seat and a buffer protection assembly, the rigid sleeve seat is used for being fixed on the surface of the aluminum pipe laser cutting machine and performing sleeve connection protection on a laser cutting machine head, and the surface of the rigid sleeve seat is fixedly sleeved with a fixed ring seat; a plurality of permanent magnet blocks are arranged on the surface of the fixed ring base in a circumferential mode, and the end of the induction coil is electrically connected with a Hall sensor. An induction coil and an inductance switch structure are arranged on the surfaces of the inductance ring base and the buffer protection assembly respectively, stable triggering of an alarm signal is achieved through mechanical contact of a movable lantern ring and an elastic edge ring with an obstacle, th