Ultrasonic welding is decided by your components, not by a machine specification. Tell us about them — and send photos — and you get an engineered answer.
Two companies can buy the same press and get completely different results, because the machine is the smallest variable. What decides success is the resin, the joint geometry, the sonotrode and the fixture — and three of those four depend entirely on your part.
So we would rather ask ten questions now than quote a machine that cannot do the job. If the answer is that ultrasonic welding is wrong for your part, you will hear that too.