Robots are turning up on more factory floors and assembly lines as companies struggle to hire enough workers to fill rising orders. Orders for workplace robots in the U.S. increased by a record 40% during the first quarter compared with the same period in 2021, according to the Association for Advancing Automation, the robotics industry’s trade group. Robot orders, worth $1.6 billion, climbed 22% in 2021, following years of stagnant or declining order volumes, the group said.