The utility model discloses a
digital printing take-up and pay-off mechanism which comprises two frames, a take-up roller, a support and a guide roller, the number of the frames is two, supporting legs are installed at the two ends of the bottoms of the two frames, the take-up roller and the guide roller are installed between the two frames respectively, a gap is formed between the take-up roller and the guide roller, a connecting rod is arranged on one side of each frame, and the connecting rod is connected with the support. A driving
assembly is installed on the connecting rod and comprises a driving motor and further comprises a linear guide rail
assembly, a limiting blocking piece, a rear limiting sensor and a front limiting sensor. Through cooperation of an expansion roller, a distance measuring sensor, a driving
assembly, a rear limiting sensor, a front limiting sensor and a guide roller, the distance measuring sensor measures the
linear distance from the expansion roller to the outer
diameter face of winding paper of a winding roller in real time, the
linear distance from the expansion roller to the outer
diameter face of the winding paper in the horizontal direction is adjusted through a driving motor, and it is guaranteed that in the winding process, the winding paper is not damaged. The wrap angles of the expansion roller and the winding roller are fixed, and the distances in the vertical direction are the same, so that the constant tension of the winding on the material is effectively kept.