Compression and release device and compression and release method for hot knife unlocking

The invention relates to a pressing and releasing device for hot knife unlocking and a pressing and releasing method.The pressing and releasing device for hot knife unlocking comprises a seat body, a hot melting mechanism, a pre-tightening rod, a guide pin and a rope body, the hot melting mechanism is installed above one end of the seat body, and the pre-tightening rod is installed above the other end of the seat body; the guide pin is installed in the middle of the seat body and is parallel to the pre-tightening rod, and the seat body is provided with a containing groove used for containing equipment to be pressed. One end of the rope body is tied and fixed on the to-be-pressed equipment, the other end of the rope body is tied and fixed on the pre-tightening rod, the middle of the rope body bypasses the guide pin and presses the to-be-pressed equipment, and the middle of the rope body is further arranged close to a heating wire of the hot melting mechanism. According to the pressing and releasing device for