HVAC Equipment Automatic Hairpin Bender Bending Machine for Air Conditioners
1. Product Range
WONDERY is a professional supplier of HVAC equipment such as the automatic hairpin bender machine,
high speed fin press machine, aluminum/copper straightening and cutting machine, welding machine, brazing furnace.
2. Structural features of hairpin bending machine
2.1 Structure: servo fixed length cutting and unloading, fixed vane pump is used in hydraulic system, and servo
motor drives the bending mechanism.
2.2 The whole hairpin bending machine is composed of material rack, cutting machine and bending machine.
The hairpin bender machine can move back and forth in length direction by servo driving ball screw to realize
the production of different length workpieces. Automatic circulation process: straightening → feeding →
pressing → cutting → bending up → core pulling → loosening → unloading → reset.
3. Technical Parameters
| Item |
Parameters |
| Tube specification |
7mm x 19.05 x 0.6mm (Al thickness ) |
| Length of hairpin |
200-- 2000mm |
| Material |
Al (soft) |
| Processing capacity |
8 pipes are processed simultaneously |
| Hydraulic oil |
ISOVG 32/160 |
| Working pressure |
less than 6.3 Mpa |
| Oil temperature controlling |
Air cooler |
| Air resource |
4-6 Bar / 500L per. Min |
| Volatility oil |
oil tank 20 liter for mandrel |
4.Acceptance Criteria of Hairpin Bending Machine
4.1 The pipe orifice shall be flush, the limb length error shall be less than 0.6 mm, and the pipe
end incision shall be smooth and smooth without cracks.
4.2 The bending part has no obvious concave, bulge, wrinkle and other defects (no wrinkle can
be felt by hand), and the ovality ≤8~10%.
4.3 The unroundness of straight pipe is less than 4%.
4.4 The limb tube is straight,and the straightening accuracy is ≤3／1000mm, and there is
no obvious scratch on the outer wall of the tube (and mold clamping mark).
4.5 The unlevelless of the two legs of the long U-tube is ≤3%.
4.6 All actions are normal without jamming.
4.7 The tolerance of center distance between two limbs is ±0.1 mm, the inclination of
incision is ≤0.5 mm, and the roundness is ≤0.1 mm.
4.8 The thickness reduction behind the tube shall not exceed 20%
5.Main Components of auto hairpin bender machine
| No. |
Item |
Brand |
| 1 |
PLC |
Mitsubishi, Japan |
| 2 |
Servo motor |
Mitsubishi, Japan |
| 3 |
Inverter |
Mitsubishi, Japan |
| 4 |
Servo driver |
Mitsubishi, Japan |
| 5 |
Touch screen |
Mitsubishi, Japan |
| 6 |
Oil pump |
Yuken |
| 7 |
Hydraulic valve |
Yuken |
| 8 |
Main pneumatic components |
Airtac |
| 9 |
Limit switch |
Schneider |
| 10 |
Switch button |
Schneider |
| 11 |
Air switch |
Schneider |
| 12 |
Relay |
Schneider |
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HVAC Equipment Automatic Hairpin Bender Machine For Air Conditioners Images
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