Rapid groove changing guide and guard device for rough rolling and intermediate rolling of wires

The invention discloses a rapid groove changing guide and guard device for rough and intermediate rolling of wires, and belongs to the technical field of steel rolling. The device comprises an inlet guide and an outlet guide, a plurality of inlet guide grooves are formed in the positions, corresponding to different roller grooves of rollers, of the inlet guide, a plurality of outlet guide grooves matched in position are correspondingly formed in the outlet guide, and the width of the inlet guide grooves and the width of the outlet guide grooves are kept consistent with the width of the roller grooves in the corresponding positions; the distance between every two adjacent inlet guide grooves and the distance between every two adjacent outlet guide grooves are kept consistent and correspond to the distance between every two spaced roller grooves in the roller. On the basis of guaranteeing the centering quality of the hole groove, the on-site online groove changing efficiency can be effectively improved, the num