Welded pipe fitting inspecting device, has light emitter and receiver placed perpendicular to main path of light, and arm connected to support unit by double hinges whose axes are perpendicular to direction of main path

摘要

The device has a light emitter (5) and a light receiver (6) placed perpendicular to main path of the light. The emitter and the receiver are held at the ends of an arm (8) that is bent for passing tubes (2, 3). The arm is connected to a support unit (9) by double hinges (13, 14) whose axes are perpendicular to direction of the main path, where movements of the hinges are controlled by motors. An independent claim is also included for a method of inspecting welded pipe fitting.