Five-axial warp knitting machine let-off mechanism

The invention relates to the technical field of warp knitting machine equipment, in particular to a five-axial warp knitting machine let-off mechanism. The mechanism comprises an unwinding roller which is rotationally arranged on a rack, a rotating shaft, a movable cone pulley, a fixed cone pulley, a first connecting rod, a second connecting rod, a transmission belt, a driven wheel and a groove wheel; the rotating shaft and the driven wheel are rotationally arranged on the rack, the fixed cone pulley is fixed to the rotating shaft, and a spline is arranged on the rotating shaft. When the five-axial warp knitting machine let-off mechanism is in use, the unwinding roller performs unwinding actively, and makes contact with warp yarns through one end of the second connecting rod on the rack; when the warp yarns need to be tightened or relaxed, the warp yarns control the second connecting rod which drives the first connecting rod, the mobile cone pulley is controlled to shift on the rotating shaft, the speed of th