Ultrasonic sealing machine and ultrasonic principle

  Ultrasonic sealing machine and ultrasonic principle

       Ultrasonic sealing machine is the advanced equipment for plastic hose sealing.

It applies ultrasonic waves to make the plastic hose sealing place by the action of the transducer to produce impact high heat and quickly melt to bond, so there is no need to add any auxiliary products, sealing speed, good quality, beautiful appearance, the advantages of chemical agents have a small impact not afraid of surface contamination as well as sealing the tail, solve the shortcomings of the use of adhesives or hot melt welding.

Suitable for toothpaste, cosmetics, oil, drugs, food, industrial supplies and other types of hose sealing, ultrasonic sealing machine using Taiwan movement line, the use of ultrasonic principle of hose, composite tube tail sealing, good work stability, high efficiency, dynamic components are used well-known brands.

       Ultrasonic waves, able to transmit information, easy to obtain a more concentrated sound energy, in the water to spread far away. The human ear can hear the frequency of sound waves for 20 ~ 20000Hz, when the vibration frequency of sound waves is greater than 20000Hz, the human ear can not hear. Ultrasound because of its lower limit of frequency is approximately equal to the upper limit of human hearing and named. Therefore, we call the sound waves with a frequency higher than 20,000 Hz "ultrasound".

Basic principle editor

Ultrasound is part of the sound waves, is inaudible to the human ear, frequency higher than 20KHZ sound waves, it and sound waves have something in common, that is, are generated by the vibration of matter, and can only be spread in the medium; at the same time, it also exists widely in nature, many animals can transmit and receive ultrasound, which is most prominent in the bat, it can use the weak ultrasound echo in the dark to fly and catch food. But ultrasound also has its special properties 'such as having a high frequency and a short wavelength, so it also has similarities with light waves of very short wavelength.

Properties Editor

Ultrasound is an elastic mechanical vibration wave, it has some characteristics compared with the audible sound: the direction of propagation is stronger, can be gathered into a narrow beam of direction; in the propagation medium mass vibration acceleration is very large; in the liquid medium when the ultrasound intensity reaches a certain value will occur after the cavitation phenomenon.

A. Beam characteristics

From the source of sound waves to a certain direction (other direction is very weak) directional propagation, called beam. Ultrasound due to its short wavelength, when it passes through a small hole (greater than the wavelength of the hole), will show a concentrated beam of rays in a certain direction. And because ultrasound is highly directional, it can be directed to collect information. Similarly, when there is an obstacle in the direction of ultrasound propagation, the diameter of the obstacle is greater than the wavelength, it will produce a "sound shadow" after the obstacle. These are like light through small holes and obstacles, so ultrasound has and light waves similar to the beam characteristics.

Ultrasound beam of the good or bad, generally with the size of the divergence angle to measure (customary

(expressed by the half-emission angle mortar). The size of a flat circular piston source, for example, determines

The basic principle of ultrasound

The basic principle of ultrasound (4 pictures)

In the source of the appropriate diameter (D) and the wavelength of sound waves (λ). It can be seen that to make the emitter emit a better directional ultrasound, the angle of θ must be as small as possible, the emitter (source) of the straight spasm D must be very large or emitted frequency f must also be very high to get, otherwise it will be counterproductive. Because the wavelength of ultrasound than the wavelength of the audible sound is shorter, so it has better beam characteristics than the audible sound waves, the higher the frequency of ultrasound, the shorter the wavelength, the more significant the characteristics of this propagation in a certain direction.