20khz High Amplitude Ultrasonic Welding Piezoelectric Transducer For Welding ABS/PP/PE/PC/PUC/PMMA/PS/PPS/PBT/PETG Material

Ultrasonic waves are transformed into mechanical vibrations through transducers. The characteristics of transducers depend on material selection and manufacturing process. The performance and service life of transducers of the same size and shape are very different. The commonly used high-power ultrasonic transducer is used in ultrasonic plastic welding machine, ultrasonic metal welding machine, various handheld ultrasonic tools, continuous working ultrasonic emulsifier, atomizer, ultrasonic engraving machine and so on. Commonly used products such as 15KHz 20KHz 28KHz 35KHz 40KHz 55KHz 70KHz can also design and produce non-standard transducers according to the special requirements of customers to meet all kinds of needs.

The ultrasonic plastic welding machine transmits ultrasonic waves to plastic processing parts through the welding head, so that the two plastic joint surfaces are subject to severe friction due to the action of ultrasonic waves, and the frictional heat causes the plastic joint surfaces to melt and complete the bonding. This technology has the advantages of fast speed and firm welds, and more importantly, it can automate the production and processing of plastic products. Ultrasonic plastic welding machine can be used for plastic welding, implantation, forming, riveting, spot welding, cutting, sewing and other operations. As long as the welding head is changed, one machine can be used for multiple applications.

An ultrasonic transducer is an energy conversion device. Its function is to convert the input electrical power into mechanical power (ie, ultrasound) and then transfer it out. It consumes a small part of the power (less than 10%). Therefore, the most important issue when using an ultrasonic transducer is the matching with the input and output ends, followed by mechanical installation and matching dimensions. There are many types of ultrasonic machinery on the market, and customers must provide accurate and reliable indexes to ensure that the transducer products provided by our company can match well with your company's machines and play a better performance.

Ultrasonic welding is an industrial technique through which a very high-frequency ultrasonic acoustical vibrations are applied to the work pieces locally and which are being confined together under the influence of high pressure in order to develop a solid-state weld, mostly used for plastics. In other words, it is the joining or altering of thermoplastics via heat which is generated from high-frequency mechanical motion. Electric energy of high frequency is converted into mechanical motion of the same high-frequency to attain welding process. This mechanical motion along with the force which is applied generates frictional heat at the plastic components’ joining surfaces. This will enable the plastic material to melt and form a molecular bond amongst the parts.

Ultrasonic Welding Process

The ultrasonic welder machine will comprise of components such as – Transducer, Sonotrode and Anvil. The complete welding mechanism will include the following steps:

A stationary clamping force is put exactly perpendicular to the interface in between the work pieces.
Then the contacting sonotrode of the welder oscillates parallel to the interface.
This coalesced effect of stationary and oscillating force generates deformation which furthers welding.

20khz High Amplitude Ultrasonic Welding Piezoelectric Transducer For Welding ABS/PP/PE/PC/PUC/PMMA/PS/PPS/PBT/PETG Material