Mould closing protection controller of injection molding machine

The utility model provides a mould closing protection controller of an injection molding machine. The mould closing protection controller comprises a mould closing protection detection circuit connected with a main circuit of the injection molding machine, wherein an input end of the mould closing protection detection circuit is connected with a laser transmitter and a photoelectric receiver which are mated with each other; the laser transmitter and the photoelectric receiver are fixedly mounted on the two sides of a product de-molding position to form a product de-molding detection device. According to the mould closing protection controller provided by the utility model, the detection precision of the laser transmitter and the photoelectric receiver is high; if a product is not completely de-molded and one part of the product is stuck and remained on a mould, a laser path is blocked and the mould closing protection detection circuit can detect a corresponding signal, so as to further stop the main circuit o