Weft detecting device of circular weaving machine

The utility model discloses a weft detecting device of a circular weaving machine, which comprises a machine body (6), a signal receiving probe (4) and a weft signal transmitter (3). The weft detecting device is characterized in that a main control panel (7) is arranged in the machine body (6) and connected with the signal receiving probe (4) through a three-cored cable (5), the main control panel (7) is provided with a relay (8), a weft signal transmitter (3) is arranged on the main control panel (7) at a position corresponding to the signal receiving probe (4) and connected with a weft yarn pipe seat (2), and the weft signal transmitter (3) is provided with weft-finished signal wiring terminal (1). The weft detecting device not only has a function of detecting broken wefts, but also detects weft run-out signals through the weft run-out signal wiring terminal so as to send a stopping signal, and avoids the quality problem that wefts of products are defected caused by sending weft breakage signals only when t