Yarn catching device and yarn winding machine

摘要

A yarn joining cart (3) includes a suction pipe (44) adapted to suck a spun yarn (10), and a reflective sensor (100) adapted to detect the spun yarn (10) passing through the suction pipe (44). A reflecting section (120) adapted to reflect light emitted from the reflective sensor (100) in a direction different from the reflective sensor (100) is arranged at a portion facing the reflective sensor (100) with a path of the spun yarn (10) in the suction pipe (44) therebetween.