ultrasonic welding machine

الوصف

Ultrasonic welding is a process used to join two plastic parts together to form a strong, finished assembly. The process relies on high-frequency (ultrasonic) vibrations being generated and applied to the parts via a horn. Welding occurs as the vibrations are absorbed in the interface between the two parts, generating friction and causing the plastic to melt. The ultrasonic vibrations are generated by a series of components, including the power supply, converter, booster and horn, which ultimately delivers the mechanical vibration to the parts.
The role of the power supply is to convert the incoming line voltage (at *0 or *0Hz) into a new frequency. This electrical energy then is sent to the converter, which as the name implies, converts the electrical energy into mechanical vibrations. The converter consists of piezoelectric ceramic discs, which expand and contract at the rate of the supplied electrical energy. The magnitude of the vibrations is referred to as amplitude, a term that becomes very important when specifying an ultrasonic system for a given application. The vibrations then are transmitted through the booster, which typically increases the amplitude by a predetermined multiple, also known as gain. Finally, the boosters output amplitude is transmitted through the horn, where it then can be delivered to the plastic parts.

Ultrasonic spot welding machine compositon

An ultrasonic generator (power supply)

An ultrasonic converter (transducer)

An ultrasonic booster

An ultrasonic welding tool (horn/sonotrode)

Advantages of ultrasonic welding

• Does not need external heat source: The primary advantage of ultrasonic welding is that it doesnt need an external heat source. The heat is self-generated between the materials.
• Fast: Since the frequency of vibrations is very high, ultrasonic welding is one of the fastest welding methods available in the industry.
• Possibility of automation: Ultrasonic welding being uncomplicated in many ways, it is easy to automate. The ultrasonic machine comes with sensors that constantly monitor the temperatures.
• Clean and strong joint: The contact surfaces melt/fuse upon welding, and it produces a very clean and strong joint.

Application of ultrasonic spot welding machine

Ultrasonic spot welding machine tips