Knife rest of film sealing and cutting all-in-one machine

The utility model relates to the technical field of knife rests, in particular to a knife rest of a film sealing and cutting all-in-one machine. The upper knife rest is arranged on the lower knife rest in a sliding manner; the lower knife rest and the upper knife rest are connected through the sliding connecting piece; the two ends of the lower tool rest are provided with oppositely-arranged installation grooves, fixing blocks are arranged at the bottoms of the installation grooves, springs are arranged on the fixing blocks, and the top ends of the springs jointly bear the upper tool rest. Sliding blocks are arranged at the two ends of the upper knife rest, mounting holes are formed in the sliding blocks, graphite sheets are attached to the inner walls of the mounting holes, graphite copper sleeves are arranged at the mounting holes, and graphite channels are arranged at the top ends of the springs. The relative sliding between the graphite flakes and the graphite copper sleeve replaces the sliding between th