Laser cutting device of laser cutting bed

The laser cutting device of the laser cutting bed comprises an operation table, a first linear motor is fixedly connected to the side face of the operation table, a portal frame is fixedly connected to a moving part of the first linear motor, and a fixing plate is fixedly connected to the surface of the portal frame through bolts. A fixing column is fixedly connected to the side, away from the portal frame, of the fixing plate, a laser transmitter is fixedly connected to the end, away from the fixing plate, of the fixing column, and a connecting plate is fixedly connected to the surface of the portal frame through bolts. When the laser cutting device works, the laser receiver cannot receive a signal, at the moment, the first linear motor, the second linear motor and the laser cutter stop running, the purpose that the laser cutting device can protect an operator conveniently through the protection function is achieved, and the situation of safety accidents caused by misoperation of the operator is avoided; and