Built-in sliding plug door

A first guide rail and a second guide rail are fixedly arranged above a sliding door, the cross section of the first guide rail and the cross section of the second guide rail are in a C-shaped groove shape, and the included angle between a first parallel rail and a first sliding plug rail is smaller than the included angle between a second parallel rail and a second sliding plug rail. The sliding door is in rolling connection with the first guide rail and the second guide rail through the guide bearing assembly. A rack is fixedly arranged on the inner side of the sliding door, a driving gear is rotationally arranged at the output end of the driving motor, a sliding groove is formed in the rack, and a rotating plate is fixedly arranged on the rotating column and is in rolling connection with the sliding groove through rollers. And a plurality of locking gears corresponding to the locking plates in position are fixedly arranged on the rotating column. The utility model aims to provide a sliding plug door which