TDF Duct Corner Punching Line

The synchronized decoiler-feeder-press arrangement runs at 45 pieces per minute with no manual intervention between stages. Coil-fed operation eliminates the time lost to loading pre-cut sheets, and the 500 kg coil capacity reduces changeover frequency during long production runs.

The BRF-2010NS roller feeder links mechanically to the press via a draw bar, ensuring each feed stroke matches the punch cycle exactly. With ±0.2 mm accuracy over a 100 mm feed length, every TDF corner maintains the dimensional consistency required for leak-free duct assembly.

The JD21-80A press provides substantial blanking force for steel up to 2.0 mm, while 100 mm of die height adjustment and a 320 mm maximum die set height let operators switch between different corner profiles. The 580 × 860 mm worktable supports progressive die layouts for multi-step forming in a single press stroke.

The BML-150 decoiler uses mechanical expansion to grip coil IDs from 450 to 530 mm, and seven straightening rollers remove coil set and edge wave before the strip reaches the feeder. Flat, consistent material entering the press extends die life and reduces reject rates.

Heavy steel-frame construction on H-beam bases absorbs press vibration and keeps alignment stable over years of three-shift operation. All drive components — the 1.5 kW decoiler motor and 7.5 kW press motor — run on standard 380 V industrial power with no special supply requirements.