Chinese | Contact usWelcome to visit Dongguan City JieDa Ultrasonic Equipment Technology Co., Ltd Official website!
National Hotline
UltrasoundProduct Categories
National Hotline
4News Center

The working principle of ultrasonic plastic welding machine

When the ultrasonic action on the thermoplastic plastic contact surface, will produce tens of thousands of times per second high-frequency vibration, which reaches a certain amplitude of high-frequency vibration, through the welding pieces of ultrasonic energy to the welding area, The welding interface at the interface of large resistance, it will produce local high temperature. And because of poor thermal conductivity of plastic, the moment can not be distributed in time, gathered in the welding area, resulting in two plastic contact surface rapid melting, coupled with a certain pressure, to integrate into one. When the ultrasonic stops, let the pressure last for a few seconds to make it solidified, thus forming a solid molecular chain, to achieve the purpose of welding, welding strength can be close to the strength of raw materials. Ultrasonic plastic welding depends on the quality of the transducer welding head amplitude, pressure and welding time and other three factors, welding time and welding head pressure can be adjusted, the amplitude determined by the transducer and horn. The three kinds of interaction have a suitable value, the energy exceeds the appropriate value, the plastic melting amount is large, easy to deformation of welding; if the energy is small, it is not easy to solder, the pressure can not be too much. This optimum pressure is the product of the length of the welded portion and the edge of the optimum pressure per 1mm
Ultrasonic welding: Principle: Ultrasonic plastic welding is generated by the signal generator high-frequency sine wave signal, through the transducer into high-frequency mechanical vibration energy, and then through the horn and welding head will be amplified vibration coupled to the welding plastic High-frequency friction under the high pressure of the plastic contact surface instantly produce high-temperature melting, ultrasonic stop, after a short period of pressure after cooling the two plastic parts will be welded as a whole, the welding process is generally not more than a second, the welding strength can be Comparable to the body. Applicable: nylon, polyester, polypropylene, some polyethylene, modified acrylic resin, some vinyl compounds, carbamate compounds. Widely used in electronic appliances, auto parts, plastic toys, stationery, handicrafts, cosmetics and other industries.
Hot plate welding method: Principle: through the metal hot plate directly on the plastic parts of the welding surface heating, to a certain depth of penetration, the hot plate, and then the two plastic pieces closed pressure cooling, so as to achieve the purpose of welding. Applicable: PP, PE, nylon, ABS, acrylic and other thermoplastic plastic materials such as automotive combination lights, carburetor, water tank, washing machine balance ring, solar liner spray bucket, bumper, vacuum cleaner and other refractory plastic parts Large - size special - shaped workpiece welding.
Rotary friction welding: Principle: welding, a plastic workpiece fixed, another plastic workpiece in the motor driven high-speed rotation, so that the two plastic parts contact surface friction each other to produce high-temperature melting, rotation stopped, the role of the pressure on the workpiece So that the two parts solidified into one. Applicable: PE, PP, nylon, PET and other round pipe, industrial filter, medicine filter, plastic cup, spray head, fog, water pipe head, hole ball, float, toy ball, dehydration joints, steam Locomotive filter oil cup, shower head, hot water bottle gong and other rotating body parts.
Hot melt welding method: principle: directly through the heating plate on the heating parts for high temperature heating, melting, to achieve the purpose of welding or metal parts buried. Applicable: especially for screw welding and hot riveting pressure, such as switches, mobile phones, all kinds of electronic products.
High frequency welding: Principle: from the tube self-excited oscillator to produce high-frequency electric field of plastic molecules within the high-frequency collision generated by heat, after bonding to achieve the purpose of welding. Applicable: molecules with polar plastic film heat, such as shoes, trademarks, stickers, raincoats, rainflies, umbrellas and so on.
Ultrasonic plastic welding machine is widely used in the automotive industry, electronics industry, medical industry, home appliance industry, no cloth clothing, office supplies, packaging industry, toy industry. Such as body plastic parts, car doors, car car instrument, car mirror mirror, sun visor, interior parts, filters, reflective materials, reflective spike, bumper, cable, motorcycle plastic filter, heat Plastic equipment, brakes, oil cups, water tanks, fuel tanks, air ducts, exhaust gas purifier, tray filter plate; plastic electronic: prepaid water meter meters, communications equipment, cordless phones, mobile phone accessories, cell phone shell, battery shell, Card, folder, folding box, PP hollow board, pen holder, ink cartridges, toner cartridges, toner cartridges, cartridges, cartridges, toner cartridges, ; Medical daily necessities: watches, kitchen utensils, oral liquid caps, drip caps, mobile phone trim, gold soft brush, daily necessities, health supplies, children's products, air mattresses, racks, knife handle, gardening supplies, Shower, electric shower, electric kettle, vacuum cleaner, speaker metal cover and civil grille, and so on.