The sonotrode (also known as the horn) is the “tool” of the ultrasonic welder. It is the component that comes into direct contact and supplies the energy to the metal materials to be welded.
What is energy director in ultrasonic welding?
The purpose of the energy director is to focus the ultrasonic energy at the apex, resulting in a rapid build up of heat. This causes the triangular section to melt and flow across the joint interface, forming a weld. Typical heights for energy directors are between 0.2 to 1.0mm, depending on the material.
What is the function of horn in USM?
An ultrasonic horn (also known as acoustic horn, sonotrode, acoustic waveguide, ultrasonic probe) is a tapering metal bar commonly used for augmenting the oscillation displacement amplitude provided by an ultrasonic transducer operating at the low end of the ultrasonic frequency spectrum (commonly between 15 and 100
How does an ultrasonic horn work?
The ultrasonic horn has three primary functions: It transfers the ultrasonic mechanical vibrational energy (originating at the transducer) to the plastic parts through direct physical contact, and localizes the energy in the area where the melt is to occur.11 Mar 2010
How does a sonotrode work?
In ultrasonic machining, welding and mixing, a sonotrode is a tool that creates ultrasonic vibrations and applies this vibrational energy to a gas, liquid, solid or tissue. A sonotrode usually consists of a stack of piezoelectric transducers attached to a tapering metal rod.
How does an ultrasonic booster work?
Ultrasonic boosters, amplifiers, concentrators, or velocity transformers increase the amplitude of the ultrasonic vibrations emitted by the ultrasonic converter or transducer, and then transmit these amplified vibrations to the horn or resonator. The ultrasonic horn then contacts and delivers power to the load.
What is the material of horn?
Horns consist of keratin, and the term "horn" is used to refer to this material, sometimes including similarly solid keratin from other parts of animals, such as hoofs.
What is ultrasonic welding horn?
Ultrasonic welding horns are specially tuned devices used to deliver ultrasonic energy to the plastic part being welded. They are tuned to match the welding system to which they are attached, usually to within ±30Hz of the machine's frequency.