The principle of ultrasonic welding machines and processes? The principle of ultrasonic welding machines and processes? Ultrasonic welding machine is how the principle and process it?
Application of the principle of ultrasonic
 We know that the correct physical wave is defined as: the transmission of vibration in the body in the formation of waves. This wave form must have two conditions: First, the source of vibration, the second is communication medium. Waves are generally classified as follows: The first vibration direction and the direction of propagation according to classification. When the vibration direction perpendicular to the propagation direction, known as transverse wave. When the vibration direction and the propagation direction, known as the longitudinal wave. The second is classified according to frequency, we know that the human ear is sensitive hearing range 20HZ-20000HZ, so in this range is called the acoustic wave. lower than this range, the wave is called the second wave, more than this range is called ultrasonic waves. wave propagation in the object in the following main arguments: First, the speed V, II is the frequency F, third is the wavelength λ. relationship between the following: V = F.λ. a substance in the same wave propagation speed is certain, so the frequency of different wavelengths is different. In addition, you also need to consider The point is that waves always spread in the body where there is attenuation, spread farther, the more severe attenuation, which also belongs to the ultrasonic processing account. 1, ultrasonic applications in the plastics processing principle: Plastics Processing used in the ultrasound, there are several existing frequency 15KHZ, 18KHZ, 20KHZ, 40KHZ. The principle is the use of P-wave amplitude of the peak-bit transfer to the plastic cracks, in the case of pressure, so that the two plastic parts or Other parts and plastic parts contact position of molecular collisions have melted, the contact bit of plastic fusion, to processing purposes. 2, ultrasonic welding machine ultrasonic welding machine is mainly composed of points of several sub-components by the following: generator, air points, the program control points, the transducer points. generator main role is to 50HZ power frequency conversion using high-frequency electronic circuits (such as 20KHZ) high-pressure waves. pneumatic sub main role is to be completed in the process pressure, pressure, etc. Pressure of work needs. program control points control the whole workflow of device, so that the same processing results. transducer points is the high pressure wave generator into mechanical vibrations, after transmission, amplification, to reach surfaces. 3. for divided by the third component can control: the transducer (TRANSDUCER); amplifier (also known as the secondary lever, horn, BOOSTER); welding head (also known as the welding mode, HORN or SONTRODE). ① transducer (TRANSDUCER ): the role of the transducer is to convert electrical signals into mechanical vibration signals. the electrical signal into mechanical vibration signal can be applied to two physical effects. A: magnetostrictive effect. B: piezoelectric effect of the anti-effect. Magnetic Actuator Effect of ultrasonic applications in the early more frequently used, the advantage of the power capacity to do; drawback is the low conversion efficiency, making difficult, difficult to mass industrial production. Since the Langevin piezoelectric ceramic transducer invention, the piezoelectric effect, the application of counter-effect can be widely adopted. piezoelectric ceramic transducer with a high conversion efficiency, high-volume production advantages and disadvantages of the power production capacity is small. existing ultrasound machines are generally used piezoelectric ceramic transducer. piezoelectric ceramic transducer is loaded with two pieces of metal before and after the piezoelectric ceramic in the middle, through the screw tight connection is made. Usually the transducer output amplitude of about 10μm. ② welding head (HORN): the first is the role of welding plastic parts for a particular production, consistent with the shape of plastic parts, machining range requirements. transducer, horn, welding head are designed to work for the ultrasonic frequency by half wavelength, the size and shape so they have to be specially designed; any changes are likely to lead to frequency, the processing effect change, they need professional production. durable material used in accordance with different sizes will be different. suitable for ultrasonic transducer, horn and welding head of materials: titanium, aluminum, steel and so on. Because ultrasound is kept around to 20KHZ frequency vibration, so the material requirements are very high, not common The material can bear.
II: Ultrasonic it works:
 Ultrasonic processing thermoplastic plastics, is the use of the work of junction between the high frequency of rapid molecular friction, heat, heat enough to melt when the work to stop hair ultrasonic vibration, this time by the melting and solidification junction piece to complete the processing program. often used in plastic processing and frequency 20KHZ 15KHZ, 20KHZ which is still outside of human hearing, it is called ultrasound, but only 15KHZ still within the range of human hearing.
III: ultrasonic body principle:
 To 220V, 50HZ into 15KHZ (or 20KHZ) of high voltage, the use of shock sub into mechanical energy. So vibration, through the transmission of child, welding head spread to processing materials, and use air pressure to produce work of the friction effect of junction . vibrator and the vibration transmission sub-unit in the barrel, external welding head, the use of compressed air system and control loop, under the conditions set down in advance to complete the procedures.
IV: Component Function Description:
Delay Time Setting: Adjust the start time of the oscillation to start switching from 0 to 9.99 seconds after starting the oscillation. 2. Welding time setting: adjust the welding duration of the delay time of the end of the oscillation of the range of 0 to 9.99 seconds. 3. Hardening Time Setting: Adjust the oscillation at the end of the work material welding cooling time in setting the range of 0 to 9.99 seconds. 4. Counter: the number of records with the working cycle, with zero button. 5. adjustment and pressure gauge: pressure of work instructions and adjust the pressure to use. 6. acoustic adjustment: adjust the vibration of a child and the resonant matching the oscillation circuit, so that the desired conversion efficiency. 7. ammeter: Display acoustic amplitude of load or load strength of the work. 8. the power switch and light: power switch control, and instructions open the signal 9. overload lights: Display sonic overload of abnormal, need to do acoustic adjustments to the overload light does not appear until the overload is required to manually reset (if it still can not lift, please call contact)
 Welding head: physical drive on the vibration energy at work, so welding. 14 up / down cushion adjustment: adjustment knob located in front of the machine can be appropriately adjusted to lift moderate inertia. 15 to adjust the rate of decline: a decline in adjusted operating speed and appropriate use. 16 welding location window: View normal fusion welding head pressure when the conditions attached to the work material. 17. the lowest fine-tuning screws:, to be precise dimensions of the decline in the use of cylinder limit. 18 in fine-tuning screw: Adjust the four screws , mean pressure attached to the welding head can work on things. 19 output cable and socket: connection body vibration sub-system and the oscillation tank lines. 20 control cable and socket: join the body control unit and automatic control of the oscillation circuit with a box. 21 Ground Nut: Electronic circuit of the ground wire connection, the security leaks. 22 Fuse: electronic circuits of the overload protection.
Five: machine installation method:
 1. Will be sent around the body vibration box placed in the observation and adjustment of the operator easy-to-place. 2. Ground: The ground end of the ground, the other end on the ground behind the oscillation knob box. 3. Join the oscillation and body box: the body and control the output cable plug cable plug socket connected to the oscillation and the body outlet box 4. then Air Source: High pressure will lead clean dry compressed air pipe and welding the source inlet air filter on a joint body to bundle combination lock. 5. then the power: the back of the oscillation of the box and plug the power cord, plug AC220V, 60/50HZ power. VI: Preparing for the adjustment and welding work: 1. Welding head: (1) first transducer (CONE) and the welding head (HORN) and the welding head screws, cleaned with alcohol or gasoline, and then welding head screws and transducer, surface cast welding head with a thin layer of yellow grease and then welded head screws on the welding head. Note: The transducer surface if the combination of welding head injury, the vibration of the communication efficiency will be reduced, should wish to maintain. (2) and then tighten the four screws to adjust the level of the welding head, the transducer fixed in the middle of the range of its rotation position. (3) the welding head by hand to screw the transducer can not turn up. (4) The welding head welding head wrench tighten the lock (about 300Kg/cm of torque), then pay special attention not to rotate the transducer to prevent the transfer tip is broken. (if that rotation of the four levels of adjustment of the welding head again tightening the screw more.)