1. Cooper tube cutting device: use of external hob cutting cooper tube, cutting spray fog lubrication, each cooper tube cutting depth can be adjusted separately to ensure that the copper pipe cutting synchronization, shrinkage less, after cutting , the feed belt reverse to separate the cooper tube.
2. Bending device: composed by the bending clamping, bending rotation, bending mold up and down and other parts. To ensure reliable clamping when bending, one cooper tube with one bending mold, each bending mold with a clamping cylinder. The bending rotary device is rotated by the swinging cylinder driven by the bending device. The bending mold is mounted on the fixed plate driven by two cylinders. When the mold is lowered, it can be fed or unloaded. When the template is raised, the bending mold is completed the bending.
3. Discharging, core pulling, and mandrel device: the above devices are installed on the rail. After the bending of the copper pipe is completed, the movable mandrel is driven by the cylinder in the bending mode clamping state, exits the bending cut point, and then discharges. The servo motor through the ball screw drive the unloading seat to move forward quickly, The connection with the movable mandrel is a connecting rod made of thick-walled cold drawn seamless pipe with oil mist lubricator and dispenser, through the distributor and the holes in the connecting rod to spray in the inner wall after the mould clamps the cube and bending to ensure the quality of the elbow.
4. Clamp length adjustment device: if the hairpin length specifications changes, it should be adjusted by length adjustment device, length adjustment device has the following parts.

(1) bending length adjustment: used to adjust the length of the workpiece after bending, the discharge seat positioning derived by the servo motor through the ball screw; bending machine positioning completed by the servo motor drive screw, when it is in place, the automatic clamping device and the base fixed.

(2) Guide rack, feeder adjustment device: According to the hairpin tube different lengths, the equipment is equipped with different length of the guide rack. The feeder is driven by the cylinder, the receiving arm is mounted on a long shaft, and the receiving arm can slide along the long axis, change the distance between the picking arms, or increase the number of picking arms to meet the different lengths of the workpiece picking up.

5. Machine equipped with safety photoelectric protection devise on both sides of the equipment.