Ultrasonic transducer device, amplitude-change pole system and ultrasonic welding equipment

Abstract

The invention relates to a combined ultrasonic transduction and welding system capable of meeting ultrasonic high-power output, in particular to an ultrasonic transducer device, an amplitude-change pole system and ultrasonic welding equipment. Through the ultrasonic transducer device and the amplitude-change pole system of improved structures, the number and positions of ultrasonic conversion units can be set according to the actual ultrasonic energy conversion need, and use is flexible and reliable; and through mounting of multiple sets of piezoelectric ceramics, a stronger ultrasonic energygroup is formed, the contact area of an ultrasonic mold is improved, and ultrasonic energy can be transmitted to the ultrasonic mold more easily. According to the ultrasonic transducer device, the amplitude-change pole system and the ultrasonic welding equipment, the ultrasonic mold can obtain more ultrasonic energy, welding energy is greatly enhanced, the welding problems that due to the large welding area and the large number of welding layers, the ultrasonic energy is insufficient, consequently, pseudo welding is caused, and welding is infirm are solved well, and work is more reliable and stable.

Description

technical field [0001] The invention relates to ultrasonic transducer technology, in particular to an ultrasonic transducer device, a horn system and ultrasonic welding equipment. Background technique [0002] The current main uses of ultrasonic transducers are: ultrasonic cleaning, ultrasonic welding, ultrasonic therapy, ultrasonic testing, ultrasonic chemistry and so on. Among them, ultrasonic cleaning, ultrasonic welding and ultrasonic chemistry have higher requirements on transducer power, and a single transducer vibrator needs to have a larger power capacity. [0003] When the transducer works at high power, multiple limits must be considered, such as electrical limit, mechanical limit and thermal limit. The electrical limit of the transducer requires that the voltage applied to both ends of the piezoelectric sheet should not exceed a certain value, so as to prevent the piezoelectric sheet from rapidly depolarizing or even being broken down due to excessive voltage. ...

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Problems solved by technology

[0004] Ultrasonic welding is the use of high-frequency vibration waves to transmit to the surfaces of two objects to be welded. Under pressure, the surfaces of the two objects are rubbed against each other to form fusion between molecular layers. The main factors affecting the quality of ultrasonic welding are welding Insufficient power, the contact area between the ultrasonic output and the mold is small, and it is difficult to meet the welding needs of large-area and multi-layer workpieces. In actual operation, the existing ultrasonic welding equipment is prone to problems such as virtual welding and weak welding. Flexible adjustment of the upper limit of output power according to actual needs

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