To accurately detect a tape cut even if the tape tail end behaves violently by the tape cut by positioning a detecting sensor so that the detecting object end in an extending outward condition at tape cut opening time of a detecting object body can be detected in a noncontact condition.
The detecting object end 6a in a detecting object body 6 is released from tensile force of a tape, and is extended outward by compressive resiliency of a spring (a compression spring 5), and the detecting object end 6a enters a detectable distance 7, and a photoelectric sensor 8 detects this, and the existence of a tape cut is detected. Therefore, since the photoelectric sensor 8 detects the detecting object end 6a surely extending outward by the tape cut, even if the tape end 9 behaves violently, the tape cut can be accurately detected. Since the detecting object end 6a can be detected until a flyer 1 rotates once after the tape cut is caused, a cut of a tape after the tape cut can be quickly detected, and it can also quickly cope with the tape cut.
YATABE TADAO
SUZUKI MASAHIKO
TOYODA YUICHI
KARASAWA NAOKI
SOTAKE HIROYUKI
Next Patent: YARN STRIP CUTTER OF WINDER