Compactor with adjustable area

According to the compactor with the adjustable area size, a handle, a first pressing plate, a second pressing plate and a third pressing plate are arranged, a base plate is rotationally connected to the middle of the handle, and the first pressing plate and the second pressing plate are slidably connected with the base plate through cranks and connecting rods correspondingly; the middle of the crank and the middle of the connecting rod are in meshed connection with a first gear fixed to the handle through a first screw and a second screw correspondingly, and when the base plate is rotated, switching of the two states that the first pressing plate, the second pressing plate and the third pressing plate are located on the same plane or located on different planes is achieved. When the first pressing plate, the second pressing plate and the third pressing plate are located on the same plane, the first pressing plate, the second pressing plate and the third pressing plate are all used for pressing powder material