The invention relates to a novel spiral gas
tube forming machine, which is applicable for spiral ducts formed by rolling
strip steel roll material along a spiral
involute track. The spiral gas
tube forming machine comprises a frame (1); a material shelf (2), a lock forming set (3), a mold frame (4) and a
cutting machine (5) arranged on the frame (1); and a
discharge shelf (7) arranged on the front side of the
cutting machine (5); wherein the frame (1) comprises a bottom plate (1.1), level adjusting bases (1.2), material shelf guide rails (1.3) and a platform (1.4); the material shelf (2) comprises a slider (2.1), a pillar (2.2), a main body (2.3) and a connection
crank arm (2.5); the lock forming set (4) comprises a bottom plate (3.1), wall plates (3.2), a feed leveling device (3.3), an upper and a lower rib-pressing rollers (3.4), an upper and a lower roller groups (3.5), a
discharge guide plate (3.6), an upper and a lower engagement wheels (3.7), and a pressing
crank arm (3.8); and the mold frame comprises a support frame (4.1), guide rails (4.2), a template (4.3) and wind
pipe baffles (4.5). The spiral gas
tube forming machine has the advantages of simple structure, integration of the material shelf and the machine, good lock
formability, multi-purpose of the mold frame, synchronous
cutting without stopping, high production efficiency and good product quality.