Hermetic Ultrasonic Sealing Technology for Auto Exterior Jointing Parts

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Hermetic Ultrasonic Sealing Technology for Auto Exterior Jointing Parts


Definition of Ultrasonic Auto Plastic Welding:


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.

 

Specifications:


Model HS-40 HS-35 HS-30 HS-28 HS-20
Frequency 40khz 35khz 30khz 28khz 20khz
Power 500W 500~800w 500~800w 500~800w 500~1000w
Horn ≤10mm ≤10mm ≤10mm ≤12mm ≤13mm
Housing Diameter 44mm 44mm 44mm 44mm 64mm
Weight of welder 1.0kg 1.0kg 1.0kg 1.0kg 1.5kg
Digital generator
Analog generator

Gun type: in accordance with the shape design of human body engineering, ultrasonic start switch is located on the trigger, easy to grasp and use the welding operation, especially suitable for horizontal or vertical.


Cylinder type: for the appearance of design straight, ultrasonic start switch is located outside the cylinder, easy welding and hand carried, can also be installed between the on machine, welding operation for each direction.

 

Competitive Advantages in Auto Industry:


1. application in riveting, forming and welding

2. light weight, easy to take, easy to operate (handheld)

3. Equipped with welding timer

4. Easty to set time welding

5. Equipped with an overload protection circuit( Voltage, current, phase, temperature, output)

6. FET power output

7. Automatic resonance

8. Maintain the amplitude function automatically

9. Starting: achieving maximum power with 105msec

 

Disadvantages:


Limitation of measure, shape and material.(ultrasonic welding for PP, PC, ABS, PA, PS, AMMA plastic).

 

Condition and Attention 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.

 

With the amplitude, the higher the amplitude, the higher the temperature rise. The pressure is applied to the molded article using a cylindrical gaze. General compressed air pressure is 0.1-0.3MPa (pressure gauge), sometimes higher. But if the use of high pressure, it will hinder the cylindrical vibration.

The welding time varies depending on the material and the shape of the product. The welding time of some molded articles is only 0.2 seconds. Over time will cause excessive welding and produce a lot of flash and bubble, resulting in poor airtight, must pay attention. Cooling (holding) time For crystalline plastic, if the temperature below the melting point, the connection will be solidified, usually the pressure time is maintained between 0.1-0.2 seconds. AMMA plastic).

Portable Ultrasonic Sounproof Spot Welder 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.

 

Applications In Automobile:


Ultrasonic Spot Welding is mainly used in automotive interior parts. Ultrasonic spot welding in sound-proof cotton of engine cover, trunk and wheel casing, and hallstand felt. Ultrasonic Riveting Welding can be used in automobile air-conditioning outlet welding, car rear view mirror, car door handles, hand car door and so on.Automotive plastic parts are mostly welded in non-standard ultrasonic welding equipment, long multi-station design, with PCL program control and LCD operation, large automotive complex workpiece welding, including different directions of the welding surface, in multiple locations.

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