Intelligent angle steel cut-off machine hard sealing device

The utility model belongs to the technical field of angle steel cut-off machine sealing, and discloses an intelligent angle steel cut-off machine hard sealing device which is characterized in that a blind hole is formed in the tail end of a motion structure of an angle steel cut-off machine, a plunger sleeve is installed in the blind hole, a plunger is arranged on the inner side of the plunger sleeve, a spring is arranged at the right end of the plunger, and the right end of the spring abuts against the right end of the plunger sleeve; and the contact is contacted with the red copper gasket. The red copper gasket is located between the plunger sleeve and the spring positioning column. The plunger sleeve is of a hollow pipeline type structure, and the plunger and the spring can be conveniently installed through the reasonable size design. The spring positioning column is of a structure that a large cylinder adheres to a small cylinder, and installation of the spring positioning column and position fixing of th