Return Tube Bending Machine
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Return Tube Bending Machine
This return tube bending machine is specially designed for decoiling, straightening, bending, and cutting coil copper tubes into return U bends and crossover C bends, used in air conditioners and heat exchangers.
This return tube bending machine is comprised of coil copper tube pay-off device, straightening device, bending & cutting device, unloading device, hydraulic system, pneumatic system and PLC control system.
For coil copper tubes diameter not more than 9.52mm (3/8”), below 5-head pay-off device will be used, passive drive, without power.
For return bends, there are other auxiliary machines
- Return bends End Reducing / Expanding Machine
- Return bends welding ring assembling machine
- Return bends cleaning & polishing machine
Technical Data
- Suitable copper tube materialTP2
- Suitable copper tube reel sizeMax. OD: Ф1100mm; ID: Ф130mm
- Suitable copper tube diameterΦ7.0mm / Φ9.52mm
- Copper tube numbersMax. 5 pieces
- Cycle time< 6s (for U bends)
- U bend height error±0.5mm
- Length error between two legsLess than 0.5mm
- Radius error±0.5mm
- Pitch error (center distance between legs)±0.1mm
- Straightness errorCurvature ≤3mm @L=1000mm
- Flattening ratio at tube endsLess than 5%
- Thinning ratio at loop areaLess than 30%
- Burr height at two endsLess than 0.2mm
- Finishing qualityNo wrinkle, scratch, crack, dimple, bulge
- Total electric power5kW