Ultrasonic welding has existed as an assembly process for more than 40 years. As a method of bonding plastics, it is clean, energy-efficient and fast, so it has become one of the most accepted processes.
The birth of ultrasonic welding was discovered by accident, because many modern miracles are similar inventions. In the early days of this technology, energy was applied to plastic parts by an operator who could manually pull the lever arm of a hand-cranked press, which was equipped with an ultrasonic transducer and a horn. In those days, the pressure would change as the process changed, and as the load was applied to the material, the amplitude would drop sharply. Process control is rough, but an industry has already started.
In the late 1960s and early 1970s, ultrasonic machines with pneumatic conveying systems were manufactured, and manufacturers called these components, presses or actuators. As a method of transferring converters and speakers to plastic, these systems are a great improvement compared to previous manual controls. In the 1980s and 1990s, new products were produced that controlled the energy delivered to plastics. Developed an ultrasonic welding machine that can weld by distance. Other major electronic advances have also been made in power supplies to control the amplitude and keep the current constant as the number rotates. However, the conveying system used to bring the vibrating horn to the plastic is still a standard actuator or press consisting of pneumatic components.
As early as the mid-1990s, experts predicted that it would be surprising if, by the year 2000, manufacturers of ultrasonic plastic welding equipment did not incorporate servo control technology into their standard product lines. This makes a lot of sense. These innovative machine motion control systems have acceleration and deceleration functions to simplify the welding process so that they can control and control force. They believe that servo-controlled ultrasonic systems will be as common as servo-controlled injection molding machines.
However, the manufacturer finally saw the light. They have developed a new delivery system that seems to provide users with a certain degree of control, which is unprecedented in the industry.
