Disposable Medical Mask Non Woven Ultrasonic Welding Purpose by 20khz Ultrasonic Transducer
Description:
Ultrasonic transducer is an energy conversion device that converts the input electrical power into mechanical power. It is the heart of the ultrasonic welding machine. Only with a suitable ultrasonic transducer can the ultrasonic welding machine be better used. We mainly choose the right through the following parameters The ultrasonic transducer:
The choice of ultrasonic transducer should pay attention to the matching of input and output, mechanical installation and matching size, and the following parameters should be considered:
1. Resonant frequency:
The frequency refers to the frequency measured by the transmission line method with a frequency generator, millivoltmeter, or the frequency measured with an impedance characteristic analyzer or similar instruments. Generally known as small signal frequency. The opposite of it is the machine frequency, that is, the actual operating frequency measured when the customer connects the transducer to the drive power supply through a cable and is energized with no load or load. Because the matching circuits of customers are different, the frequency of the same transducer with different driving power supply is different, and such frequency cannot be used as the basis for ordering.
2. Transducer capacity:
That is, the free capacitance of the transducer can generally be measured with a capacitance bridge at a frequency of 400Hz-1000Hz, or an impedance characteristic analyzer similar to the instrument. The capacitance of the ultrasonic transducer can also be measured with a general portable capacitance meter.
3. Way of working:
Due to different processing methods and requirements, the working methods of ultrasonic transducers can be roughly divided into continuous working (metal welding) and pulsed working (plastic welding). Different working methods have different requirements for the transducer. Generally speaking, continuous work has almost no pause time, but the working current is not very large, and the pulse work is intermittent, with pauses, but the instantaneous current is very large, and the power in both states is very large. Ultrasonic transducer type and maximum power:
There are different requirements for the nominal power of machines for different purposes, and the nominal power of the same ultrasonic transducer may be different when used on different machines. To avoid ambiguity, customers should specify the structure of the transducer, such as column type, inverted horn type, etc., as well as the diameter and number of piezoelectric ceramic wafers.
The above are several parameters that need to be paid attention to in the selection process of ultrasonic transducer. Whether the transducer is suitable will directly affect the actual performance and stability of the ultrasonic welding machine. Hangzhou Qianrong Automation Equipment has been focusing on the field of ultrasonic welding for many years, and currently it can be used in different fields. Customers provide various high-quality performance ultrasonic transducers and various ultrasonic welding equipment!
Specifications:
| Model | QR-5020-4BZ |
| Frequency | 20khz |
| Output power | 2000 watt |
| Joint bolt | M18*1.5 |
| Ceramic disc Diameter | 50mm |
| Qty of ceramic discs | 4pcs |
| Capacitance | 11-16nf |
| Amplitude | 10 um |
| Application | Plastic welding machine |
Functional structure of ultrasonic transducer:
(1), the matching layer is the acoustic window
(2) Piezoelectric ceramic disk transducer
(3), backing
(4), lead cable
(5), characterized in that it also includes a Cymbal array receiver, which is led by a cable
(6), 8 to 16 Cymbal transducers
(7), metal ring
(8), rubber washer
(9), composition; Cymbal array receiver is located above the disc-type piezoelectric transducer 3; piezoelectric ceramic disc transducer is used as a basic ultrasonic transducer, which transmits and receives ultrasonic signals; Cymbal array reception The device is located above the disk piezoelectric transducer as an ultrasonic receiver for receiving Doppler echo signals outside the band of the disk transducer.
Disposable Medical Mask Non Woven Ultrasonic Welding Purpose by 20khz Ultrasonic Transducer
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