Leftover material collecting mechanism, pole piece winding mechanism and leftover material collecting method

The invention discloses a rim charge receiving mechanism, a pole piece winding mechanism and a rim charge receiving method, the rim charge receiving mechanism comprises a rim charge winding roller and a swing mechanism, the swing mechanism is arranged in front of the rim charge winding roller, and rim charges are wound on the rim charge winding roller through swing of the swing mechanism; the swing mechanism comprises a driving device, a lead screw assembly and a grooved wheel, the grooved wheel is arranged on the lead screw assembly, the driving device drives the lead screw assembly to rotate, and the lead screw assembly drives the grooved wheel to reciprocate; a rim charge pressing roller is arranged above the rim charge winding roller, and the two sides of the rim charge pressing roller are arranged above the rim charge winding roller in a swinging mode through pressing roller swing arms. When the offcut is wound into the offcut winding roller, the offcut swings back and forth through the swing mechanism,