Anti-collision signal sending device

An anti-collision signal sending device comprises an M body of a body. An air vent is designed on the M body, a guide sleeve is connected on the M body in a control manner, a sinking bar is assembled in the guide sleeve, one end of the sinking bar is connected by a screw nut and a gasket in a control manner and is positioned by a cotter pin, a spring is installed in a cavity surrounded by the sinking bar and the guide sleeve, a bracket is connected on the M body in a control manner, and an approach switch is installed on the bracket. Under a work state, a mould slides to a low position from a high position, and when the mould strikes the left end of the sinking bar, the sinking bar compresses the spring, the air vent on the M body exhausts air, so that the sinking bar is prevented from impacting the guide sleeve to prevent from damaging equipment, the noise can be lowered, and simultaneously, the approach switch is triggered and provides in-place signals of the mould. According to the anti-collision signal se