Selvedge guider for hot air stenter setting machine

The utility model discloses a selvedge guider for a hot air stenter setting machine. The selvedge guider comprises a fixed pressure roller fixed on a rack, and a movable pressure roller movably connected onto the rack through a connecting rod, wherein an ejector rob is arranged on the movable pressure roller; a pressure rod is tightly attached to one end of the ejector rob; one end of the pressure rod passes through a film-type air pressure mechanism; an air valve is arranged at one end, passing through the film-type air pressure mechanism, of the pressure rod; a touch rod is connected onto the air valve; the film-type air pressure mechanism comprises an air sac and an air inlet pipe which is arranged in the air sac; the pressure rod is connected with the air inlet pipe through a connecting block. The selvedge guider can be used for effectively adjusting the breadth of fabric, is simple in structure and has strong adaptability to temperatures, humidity, corrosive gases, liquids and the like.