Misunderstanding of ultrasonic output power; the size of ultrasonic output power is determined by the diameter and thickness, material and design process of the piezoelectric ceramic sheet. Once the transducer is shaped, the power will also be shaped. Measuring the output energy is a complex process. .
It's not that the larger the transducer, the more power tubes the circuit uses, and the greater the output energy. It requires a fairly complex amplitude measuring instrument to accurately measure its amplitude, because most users know too much about ultrasound, plus a certain Misleading by some sales staff, giving consumers a wrong understanding.
The amount of power consumed does not reflect the magnitude of the output ultrasonic power. For example, the generated longitudinal energy is low and the current consumption is large, which can only indicate that the efficiency of the equipment is low, and the reactive power is large.
Misunderstandings in the selection of ultrasonic welding machines: how much output power to use, oscillation frequency, and amplitude range should be considered according to the material of the workpiece, the area of the welding line, whether there are electronic components in the workpiece, and whether it needs to be airtight. Mistakenly believe that more power is better. This is also a misunderstanding.
If you don't know much about ultrasound, please consult the engineering and technical personnel of the regular ultrasound factory. If possible, communicate with the manufacturer on-site, and don't blindly follow the misleading of some informal ultrasound salesmen.
At present, the companies that produce related equipment are very mixed, and most of them are family-style workshops.
The imitation equipment has the following fatal defects: one is that the quality of the purchased raw materials cannot be guaranteed, and the other is that the core technology of the production process is not mastered. The equipment often shows instability when working at medium power and high power, and the product qualification rate is low. Sometimes equipment is damaged.
Such as the power transformer that drives the transducer, the parameters of the magnetic material used cannot be measured, such as magnetic saturation flux density (Bs), magnetic induction intensity (Bm), effective magnetic permeability (Ue), residual magnetic flux density (Br), coercivity Force (A/M), loss factor (tan£), temperature coefficient (au/K-1), the winding process is quite particular, including expansion and vacuum dipping of epoxy resin. These test equipment and production environments cannot be done in a home factory.
Common misunderstandings and maintenance knowledge of ultrasonic welding machines
1. The accumulated water in the air filter should be discharged in time before it overflows.
2. After the welding machine is used for one month, the sliding parts should be wiped clean and re-applied with high-quality lubricating grease.
3. When cleaning the side plate and surface of the welding machine, it is strictly forbidden to use various fluxes. Neutral detergent should be used and wiped gently.
4. The dust in the machine should be cleaned with dry compressed air every six months.
Ultrasonic plastic welding machine is the abbreviation of ultrasonic plastic welding machine. Ultrasonic welding is a high-tech technology for welding thermoplastic products. Various thermoplastic plastic parts can be processed by ultrasonic welding without adding solvents, adhesives or other auxiliary materials. Its advantages are to increase multiple productivity, reduce costs, improve product quality and safe production.
The ultrasonic welding device converts the current 50/60Hz electric frequency into 20KHz or 40KHz electric high-frequency electric energy through a transistor functional device, and supplies it to the converter. The converter converts electrical energy into mechanical vibration energy for ultrasonic waves, and the voltage regulating device is responsible for transmitting the converted mechanical energy to the welding head of the ultrasonic welding machine. The welding head is an acoustic device that directly transmits mechanical vibration energy to the product to be pressed. The vibration is transmitted to the bonding surface through the welding workpiece, and the vibration and friction generate heat to melt the plastic. The vibration will stop when the molten material reaches its interface. Holding pressure for a short period of time can cause the melt to create a strong molecular bond as it solidifies on the bonding surface. The entire cycle is usually completed in less than a second, but the weld strength is close to that of a single piece of material.
Ultrasonic Plastic Welding machine
Ultrasonic Plastic Welding machine