According to the processing technology of the air pipe, the air pipe production line can be defined as the entire process flow of the air pipe forming is independently completed by a machine. The popular point is that the entire process from coil blanking to air duct forming is completed by machine processing equipment without interruption and independently. The intermediate process does not require anyone's participation and operation. A complete duct production line should realize the following functions. 1. Coil material selection and blanking function; 2-6 kinds of coil materials of different thickness or material can be selected. 2. Compression and leveling function; this function is the adjustment process before the coil processing to prevent the generation of waste. 3. The function of punching, chamfering and grooving; this function can complete the production of air duct installation holes, avoiding the inconvenience caused by later punching. 4. Cut-off function; this function separates the sheet material from the coil for the next step of processing. 5. Transmission function; it is convenient for the coil to automatically process the next process. 6. Bite; This function realizes the pressing operation of the sheet material and makes the joint angle. 7. Co-plate flange forming; this function is a key step in making double-sided co-plate flanges. 8. Bending and forming; the last process is completed, and the rectangular duct with plate flange has been formed. HVAC auto duct production line, which means some duct manufacture machines work automatic and achieve high efficiency.helps customers to choose the most suitable air duct manufacture line machines for them. Auto duct production line includes auto duct line 2, auto duct line 3, auto duct line 4, straight auto duct line 5 and U shape auto duct line 5. Features of Automatic Duct Line Automatic duct production line 2: This line 2 machine has 4 functions, including leveling, grooving/trimming, angle cutting and cutting, which is more economical. Automatic duct production line 3: Line 3 machines can complete the leveling, slotting/bedding, corner cutting, cutting and folding of the plate through the CNC automatic system. Faster and more convenient. Automatic duct production line 4: This machine can complete all the processing steps before the duct is folded, including leveling, grooving/bedding, angle shear, cutting, locking forming and TDF flange forming. Linear automatic duct production line 5: This linear machine can process thin sheet coils, including straightening, slotting/hemming, corner cutting, cutting, Pittsburgh clamping and forming, TDF flange forming and folding. U-shaped automatic duct production line 5: Compared with the linear automatic duct production line 5, this machine requires faster processing speed and a smaller footprint. Its function is the same as the linear automatic air duct production line 5. Maintenance of Automatic Duct Line The normal operation and operation of the air duct production line are inseparable from the normal operation of the machine. Therefore, in order to ensure the normal operation of the machine and ensure that the daily air duct production will not fail or stop, the air duct production machine must be maintained and maintained. In order to maintain the air duct production line, we must start from all aspects. 1. The flexible pipe of the air pipe cleaning system requires high material, and must have the characteristics of dustproof, good air tightness and smooth inner wall. The connection between it and the duct equipment must be firmer. The appearance requirements of the tuyere are also stricter, the quality must be qualified, and the frame and blades must be flat and smooth. 2. When making the air door, there must be an opening and closing mark. The multi-leaf valve blades should always overlap, and the wheelbase deviation should be within 1mm. For flexible pipes, the tightness should be appropriate, the length should be within the construction specifications, and the design requirements should be met. Cracking and deformation are not allowed. 3. For the production requirements of the hood, its specific performance is complete shape, balanced center of gravity and size deviation within 2mm per meter. The rotating parts of the fire damper must be very corrosion-resistant, and its closure must be airtight and airtight.