Waste gas collecting device of setting machine

A waste gas collecting device of a setting machine belongs to the technical field of printing and dyeing equipment. By arranging the telescopic mechanism and utilizing the control of the first driving motor, the telescopic mechanism can integrally move up and down, so that the air suction mechanism is driven to move up and down, the height of the air suction device is convenient to adjust, and when cloth needing to be shaped is loaded into the shaping machine, the height of the air collection hood can be increased to provide a larger operation space; the operation of workers is facilitated; by arranging the air suction mechanism, transverse movement of the air suction mechanism can be achieved through rotation of a second driving motor, one or more small setting machines can be arranged below the air suction mechanism, when the air suction mechanism is installed above the multiple small setting machines, the air suction range can be adjusted through transverse movement, and therefore efficient recovery of was