Multilayer weft insertion device of weaving sensor

The utility model discloses a multi-layer weft insertion device of a weaving sensor. The weft guide device comprises an upper weft guide table, a middle guide device and a lower weft guide table whichare sequentially arranged from top to bottom, the upper weft guide table and the lower weft guide table are consistent in structure and each comprise a long sliding base, a long sliding rail and a weft insertion shuttle, a weft outlet is formed in the front side face of each weft insertion shuttle, shuttle sliding grooves formed in the rear side faces of the weft insertion shuttles are in slidingfit with the front side portions of the long sliding rails embedded into the shuttle sliding grooves, and the rear side portions of the long sliding rails are connected with the long sliding bases. The middle guide device comprises a left middle guide unit and a right middle guide unit which are consistent in structure, the left middle guide unit and the right middle guide unit each comprise a longitudinal clamping rod an