Protective device and unwinding equipment

The utility model discloses a protective device and unwinding equipment. The protection device comprises a mounting base, a limiting piece and a first driving piece. Wherein the limiting piece comprises a first part and two second parts, the second parts are connected to the first part, the two second parts are arranged in a spaced mode in the extending direction of the first part, a limiting groove is defined between the first part and the two second parts, and the limiting groove is used for limiting rotation of the unwinding structure; the limiting piece is connected to the first driving piece, and the first driving piece is used for driving the limiting piece to move in the Z-axis direction. After the unwinding structure completes movement, the first driving piece drives the limiting piece to move upwards in the Z-axis direction, so that at least part of the unwinding structure is clamped in the limiting groove, the two second parts limit rotation of the unwinding structure, it is guaranteed that the pose