Hairpin Bender Machine




We have different Hairpin Bender mode for 6 tubes per cycle,8 tubes per cycle from 200mm to 4000mm length application.

1.Eye to sky uncoiler station

2.A changeable rerounding & straightening system to allow for further diameter changes.

2.1 The rounding & Straightening wheels are set on both the vertical and horizontal plane,which will straight the tubes from the 2 plates.Each tube has 2 rounding wheels and 12 straightening wheels.

2.2 The hairpin bender feeding system is a hydraulically driven friction feeding device,with air cylinders controlling the actual pressure applied to the individual feed belts.When feeding,individual air cylinders will apply proper pressure to each of the belts.The upper and bottom belts will clamp one copper tube and feed to proper length.When the proper length is almost achieved.The feeding speed will change from fast to slow,and the air cylinder pressure on the belt will change form high to low.Each air cylinder will lose almost all pressure when the tube it is feeding reaches the final proper position against a Hard Stop plate.It will hold that tube in place until all tubes have achieved the final proper position,Thus all hairpin ends are in the same final location assuring both the consistence of hairpin bend length and quality of leg lengths.

3. A fixed location cutting system of hairpin bender.The copper tubing cutting system utilizes outer rotating cutter blades to cut the tube.Lubrication takes place.The feed belts reverse and separate the tube ends after cutting.

4. Hairpin Bender Bending System,the bending system can move in the length direction to produce hairpin of different lengths.The leg length is set from the PLC and programming is fully automatic.The hairpin bender system is servo driven.This is allows for much better accuracy and less free play or back lash then the older type of hydraulic driven bending heads found in many competitor's units.

5.In addition:

5.1 "Quick Changer" of hairpin bender tube support booms are provided to support the guide tubes and allow change from one length to another in less than 2 minutes.

5.2 The Hairpin Bender will be capable of receiving such special sets of bend tooling as many be dictated by specific bend radius requirements and /or changes in tubing diameter up to 16mm maximum.

5.3 A sensing device is provided in each lubrication tank to monitor the level of oil to prevent operating the equipment without proper lubrication.A corresponding diagnostic message will be displayed on the tough screen when the level is low.

5.4 A tube pick off device is included which will support the tubes while stripping and lay them down in the tube collectors.This will produce straighter hairpins for longer lengths.There is a tube end Sizer attachment to reopen the ends of the hairpins that do not pass over the mandrels.


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