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Ultrasonic Welding
Ultrasonic Welding: Strong and Precise Connections
Quality
Ultrasonic welding is a technology that uses high-frequency sound waves to join materials together. It is a fast, efficient, and reliable method that is particularly well suited for bonding plastic components.
- Setup: For each product, a dedicated fixture and a tuned sonotrode are designed and configured to enable ultrasonic welding of that specific product. The appropriate process parameters are programmed into the generator for each product, including amplitude, welding time, pressure, speed, and hold time.
- The converter transforms the electrical energy generated by the ultrasonic generator into mechanical vibrations. The booster amplifies these vibrations, while the horn (sonotrode), depending on its design, either further amplifies the vibration or transmits the specified vibration directly to the component being welded.
- The ultrasonic vibrations are directed through the interface between the parts, where they generate friction and heat energy. This localized heat causes the material to soften or melt, creating a strong and permanent bond between the components.
- The heat generated by the ultrasonic vibrations melts the contact surfaces of the materials, allowing them to fuse together and form a strong bond.
- After the ultrasonic energy is removed, the components cool and solidify, forming a strong and durable welded joint.
Benefits
Ultrasonic welding offers several advantages that make it an excellent choice for joining a wide range of materials:
Speed
ultrasonic welding is a very fast process that allows high production volumes to be achieved in a short time.
Accuracy
this technology ensures accurate, high-quality welds that are durable and aesthetically pleasing.
Minimum distortion
ultrasonic welding generates heat mainly at the interface, which reduces the risk of distortion of the base materials.
Energy efficiency
compared to other welding methods, ultrasonic welding is more energy efficient as it does not require high temperatures or additional materials.
Environmental friendliness
ultrasonic welding is a clean and environmentally friendly method as it does not produce harmful emissions or waste.
Areas of application
Ultrasonic welding is a modern and efficient joining technology that provides strong, precise, and rapid connections for a wide range of materials. Its combination of speed, reliability, and consistent quality makes it an excellent choice for many industries where both product quality and manufacturing efficiency are critical.
Ultrasonic welding is widely used across various industries, including:
welding plastic parts (e.g. car parts, medical supplies, packaging).
connecting electrical equipment and components.
Ultrasonic Welding Equipment
Branson 8700 ultrasonic welder
An ultrasonic welding machine enables the fast and reliable joining of thermoplastic materials without the need for adhesives, screws, or other fastening methods.
By using high-frequency mechanical vibrations and controlled pressure, it creates strong, precise, and repeatable welds, making it ideal for both prototype development and high-volume manufacturing.
The machine operates at a frequency of 20 kHz and delivers up to 1,500 W of ultrasonic power, enabling high-quality welding of a wide range of plastic components and assemblies. Its precise process control and consistent energy delivery ensure reliable, repeatable welds, making it well suited for both small-batch production and high-volume manufacturing.
- Ultrasonic Frequency: 20 kHz
- Maximum Power: 1,500 W
- Stroke Length: 100 mm (3.94 in)
- Pneumatic Actuation
