Although pre-loaded assembly systems are well known in automation, they are a relatively new concept in ultrasonic welding. Ultrasonic pre-loading means that the cylinder already has been extended via an intelligent pneumatic system when the weld tool comes in contact with the plastic parts, so that the welding process can start immediately. This saves time without compromising on precision or process repeatability. Lightweight and compact ultrasonic weld actuators, along with process controls such as Herrmann Ultrasonics' Vario, offer this feature. Mounted easily on robot arms, these actuators increase output by facilitating fast and low-energy welding of plastic components.
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