30Khz Ultrasonic Spot Welding Machine For Front Bumper And Rear
Bumper
Description:
Ultrasonic welding is a high-tech technology of sintered plastic
products. The use of this technology can replace past production of
flux, adhesives, buckles or other mechanical fixation, thereby
improving the production efficiency and reduce costs.The principle
of ultrasonic welding is through the ultrasonic generator to
convert high-frequency electrical energy into higher frequency
mechanical movement, then mechanical movement through a set of
amplitude can be changed to the transmission device to the welding
head. The welding head transmits the received vibration energy to
the joint portion of the workpiece to be welded, in which the
vibration energy is converted into heat energy by friction and the
plastic is melted. Ultrasonic not only can be used to weld hard
thermoplastics, but also can process fabrics and films.
Advantages of Ultrasonic in Auto Industry.
Advantages:
- Application in riveting, forming and welding
- Light weight, easy to take, easy to operate (handheld)
- Equipped with welding timer
- Easty to set time welding
- Equipped with an overload protection circuit( Voltage, current,
phase, temperature, output)
- FET power output
- Automatic resonance
- Maintain the amplitude function automatically
- Starting: achieving maximum power with 105msec
Condition of Ultrasonic Welding:
Ultrasonic automotive plastics as the condition of ultrasonic
welding, the most important is the time to apply welding energy
(vibration, welding time) length and pressure, of course, other
conditions are also very important. Welding temperature ultrasonic
welding material viscosity flow temperature. Otherwise the material
will not melt.
Auto Front Bumper Welding Principle:
When the ultrasonic role in the thermoplastic plastic contact
surface, it will generate tens of thousands of times per second,
high frequency vibration, this high-frequency vibration, ultrasonic
energy through the ultrasonic wave transmitted to the mold to
ultrasonic welding material surface, it will produce
high-temperature materials. Plastic contact surface resulting in
rapid melting, coupled with stress, it blend and coagulation, so
that to achieve the purpose of ultrasonic welding.
Components of Ultrasonic Welding (Horn, Booster and Transducer):
They can amplify the amplitude at a particular ratio step by step.
For example, the transducer amplitude is 6mm, the booster can
amplify it triply to 18mm, and then the horn can make it to 36mm.
However, the work life of horn would be shortened with the
amplification of amplitude. The required amplitude differs with the
welding material.
There are three common horn material:
1. Titanium
high price, excellent performance good toughness and low loss,
difficult to be processed;
Its amplitude can reach to 60mm.
2. Aluminum
low price, fast loss, easy to be processed;
Its highest amplitude less than 300mm.
3. Steel
too hard to be made as horn;
its highest amplitude less than 25mm;
It is suitable for cutting but the blowpipe need to be added in for
its cooling.
Tag: ultrasonic spot welder,portable spot welder
