Pipe bending machine of Heat exchanger hairpin tube

Product Description

The pipe bending machine is a device used for processing hairpin tubes, and it is one of the key settings in the production of heat exchangers and condensers. With the development of industry and the increasing popularity of servo motors, this equipment is driven by two servo motors.

One servo motor is used for automatic material ejection after bending, and another servo motor powers the bending of copper tubes. This machine does not use a hydraulic station for drive, which significantly saves electricity and energy consumption. Its performance and accuracy have been improved considerably.

Working principle of pipe bending machine

The hairpin bending machine is of great significance in heat exchanger factories. It can easily bend pipes made of soft metals, including stainless steel, aluminum alloy, brass, and copper.

Moreover, this machine can bend tubes of different diameters and center sizes. Users only need to replace a simple tool to achieve multi-size production.

Now, let’s introduce its working principle.

1. First, we need to straighten and cut the coil using a copper tube cutting machine. The length of the tube must be the same, and workers need to insert these tubes into the tool of the bending machine.

2. Press the start button or the foot switch on the machine, and it will bend the copper tube into a hairpin shape. It automatically completes the bending process. When the tube is bent, the clamp will remain in place for some time to eliminate the tension in the tube, allowing the hairpin copper tube to maintain perfect parallelism.

3. When the copper pipe bends, the machine’s unloading device pushes the pipe out. This process is fully automated and does not require any human intervention. When the bent tube leaves the machine, it is then sprayed with lubricant for the following work cycle.

Pipe bending machine Part Brand

part name	brand
PLC	Mitsubishi
Pneumatic accessories	SMC
Servo motor	Mitsubishi
Electrical accessories	Schneider Omron
Touch screen	Delta

Advantages of pipe bending machine

• The high degree of automation

The Tube bender machine adopts PLC centralized control, realizing automated production of the bending and unloading processes.

• High precision

The bending axis servo motor drive of this device allows for accurate control of the bending angle, ensuring the accuracy of the hair clip tube.

• High production efficiency

The pipe bending machine features a multi-station design, allowing it to bend 4 to 8 copper pipes simultaneously. Compared to single-station equipment, its production efficiency has significantly improved.

• Energy saving

Thanks to the servo motor drive, it can significantly save electricity compared to hydraulic-driven machines.

Technical Parameter

ITEM	VALUE
Pipe diameter	5-12.7mm
Wall thickness	0.2-0.5mm
Bending amount	8 pieces
Bending length	200-3000mm
Air source pressure	0.5~0.6Mpa
Pipe central moment	15-35mm
Bending speed	12 times/min
Bending type	U type
Power supply	380V/50Hz 3-phase
Total power	7.5 kW

Pipe Bending Machine Working Video

Control system

This tube Bender machine uses intelligent control, PLC and servo motors from Mitsubishi Corporation in Japan, and a touchscreen from a brand in Shenzhen, China. This screen is a high-resolution color display with a maximum brightness of 1200 nits. Whether indoors or outdoors, you can read the content on the screen.

We have integrated two language pages into this control system, allowing users to switch languages with a single click. The default languages are Chinese and English. We can also customize our services for other languages, such as French, Spanish, Japanese, Korean, and Portuguese.

There are multiple I/O interfaces reserved inside the control cabinet, allowing users to connect the data of this pipe bending machine to the factory’s central processor as needed, thereby realizing intelligent production in Industry 4.0.

All settings of the machine’s human-machine interface can be accessed through the touchscreen, but we still retain physical buttons and foot switches. This design is beneficial for safe production. In the event of an emergency, workers can quickly locate the red stop button and pause the machine with a single click, ensuring the machine operates efficiently and smoothly.

Q & A