High frequency inductive machine is referred to as "high frequency welder", also known as "high frequency induction heating equipment", high frequency induction heating machine, high frequency induction heating device, high frequency heating power supply, high frequency power supply, etc.
Its principle: through a set of unique electronic circuit in the high-frequency welder, the power grid input low frequency AC (50Hz) into high frequency AC (generally more than 20000Hz). High frequency current acting on inductance coil (induction coil), through the principle of electromagnetic induction into a high frequency magnetic field, acting on the magnetic field of metal objects; An induced current proportional to the intensity of magnetic field is generated in a metal body by the eddy current effect. This eddy is affected by the skin effect. The higher the frequency, the more concentrated it is on the surface of a metal object. When eddy currents flow in metal objects, they generate heat through their internal resistance using the principle of current thermal effect. This heat is generated directly inside the body. Therefore, the heating speed is fast and the efficiency is high. It can melt any metal instantly. The heating speed and temperature are controllable. The equipment is especially suitable for heat treatment, quenching annealing, dithermic forging, extrusion forming, solder welding and so on.
In the daily industry is more commonly used solder welding process, that is, high-frequency induction welding machine is the most widely used.
High-frequency induced welding machine, also known as "high-frequency induced heating plastic welding machine"
The working principle of high frequency induction welding machine;
The metal coil is used as the medium material, and the power frequency alternating current of 220v/50HZ is converted into the high frequency of 30-100KHZ. The high frequency magnetic field is generated through the mold, and the welded metal is induced by the main frequency, so that it is heated rapidly by the high frequency magnetic field generated locally near the metal in the induction ring. And then the heated metal and plastic or simultaneously heated metal fusion together, and then through a certain pressure to weld shape, so as to achieve high frequency induction welding. Its high frequency induction power ranges from 15KW to 25KW.
High frequency induction welding machine features:
1. Adopt the converter control technology of MOSFET and IGBT power tube.
2. College energy saving, than the conventional tube high-frequency machine power saving two-thirds.
3. Simple operation and maintenance, can be learned in a few minutes.
4. Automatic control type can adjust the welding process current and time, improve the welding quality.
5. Induction ring is removable and easy to replace.
6. Small size generator, easy to press and put.
7. Suitable for metal parts and plastic parts preheating buried and induction welding.
8. The welding effect is superior for the products with large welding area but not complex and high welding requirements.
9. Digital welding parameter setting, intuitive and accurate.
10. Control current and time during welding to ensure welding quality.
Procedure:
1) Connect the air source, connect to the 220v power supply and ground reliably.
2) Connect the lower mode induction coil and ensure that the connection head is locked to prevent water seepage.
3) Turn on the power switch to check whether the equipment is working normally (whether the cooling fan is started, whether the cooling water pump is started, whether there is water seepage in the connecting joints, whether the power switch of the high frequency generator is opened, and whether the high frequency generator has alarm indication)
4) Mold adjustment: First set the manual/automatic switch to the set state, then place the welded adhesive in the lower die, and then place the upper die on the adhesive, loosen the locking handle and click the touch screen manual drop button to reduce the stroke, rotate the height adjustment handle to make the upper die act on the adhesive part to a certain pressure, adjust 4 horizontal screws to make the upper die fully contact with the adhesive part. Finally, fix the upper die and lock the handle. Press the stop button to return the upper die. The adjustment of the die is completed. 5) Pre-set the touch screen delay time, heating time, cooling time and rising time, set the manual/automatic selector switch to automatic state, test welding products and adjust the heating time and heating power according to the welding effect.
Application and applicable materials
High frequency induction heating plastic welding machine, especially for some special structure of plastic parts forming and metal and plastic preheating embedding welding, safe and reliable, easy to operate, suitable for welding auto parts, super large plastic parts, home appliances, photoelectric products embedding and so on. Suitable for PP, PC, ABS nylon thermoplastic and plastic containing glass fiber.
Common Cases
1. Irregular large plastic welding, such as outdoor photoelectric products, etc
2. Waterproof and air-tight plastic products with high requirements, such as water tank, humidifier and other household appliances
3. Welding of metal mesh and plastic products, such as sound, microphone, microphone, etc
Post time: Dec-02-2022