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ultrasonic piezoelectric transducer,
high frequency ultrasonic transducer
What is ultrasonic transducer
Ultrasonic transducer: A device that can convert high-frequency electrical energy into mechanical energy. Generally there are magnetostrictive and piezoelectric ceramic types. The power is output to the ultrasonic generator and then to the ultrasonic welding transducer. Generally, the ultrasonic can be generated through the ultrasonic derivation device.
The composition of an ultrasonic welding transducer includes a housing, a matching layer, that is, a sound window, a piezoelectric ceramic disc transducer, a backing, and a lead-out cable, which is characterized in that it also includes an array receiver, which consists of a lead-out cable, a transducer, Metal ring and rubber washer.
The principle and function of ultrasonic transducers: Ultrasonic transducers are piezoelectric ceramics that resonate at ultrasonic frequencies. The piezoelectric effect of materials converts electrical signals into mechanical vibrations. Ultrasonic transducers are energy conversion devices. Its function is to convert the input power into mechanical power (that is, ultrasonic waves) and then transfer it out. It consumes a small part of power by itself.
Types of ultrasonic transducers: They can be divided into piezoelectric transducers, sandwich transducers, cylindrical transducers, inverted horn transducers, and so on.
How to Evaluate the quality of the ultrasonic transducer?
First, it can be identified from the manufacturing process and appearance of the ultrasonic transducer; the ultrasonic transducer indirectly shows that the company pays attention to the quality of the product, and the production and quality with good technology and appearance will naturally be better . And the design process indirectly affects the quality of production.
Second, it can be identified based on the process design and application data of the ultrasonic transducer; however, this requires a good understanding of the transducer data and rich experience. Whether the design is reasonable should be determined based on the selection of data. The quality of the data indirectly affects the quality of the product, and it may not be copied according to the board. The origin of the data with the specifications is not the same, the quality varies greatly, and no matter how good the data is, it also makes a good product.
Third, parameter detection by impedence analyzer; test whether the parameters of the ultrasonic transducer can match the parameters of the electrical box, and whether it can achieve the desired effect.
Fourth, work on the ultrasonic welding machine
1-Power input experiment: This method can detect the match between the transducer and the ultrasonic generator, and at the same time can reflect the power input of the ultrasonic generator and the transducer load. The larger the mold belt, the better the task effect and the better the power input. Strong. (The current can only reflect the input efficiency and does not represent the power of the device)
2- Fluctuation experiment (imitation aging experiment): Take the equipment extra load to detect the power input fluctuation of the ultrasonic generator and transducer.
3- Overload operation test: test the fluctuation of product quality and life. This test only needs to take extra load to continue discontinuous operation for 8 hours.
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