Bending device and production line

The invention provides a bending device and a production line, and relates to the technical field of batteries. The bending device comprises a male die, a female die and a first positioning piece, and the male die is provided with a mold core; the female die is provided with a cavity and a first bearing end, a cavity opening of the cavity is located at the first bearing end, and the first bearing end is provided with a first direction parallel to the first bearing end. The first driving piece is connected with the male die, the first driving piece can drive the male die to move, and the moving path of the male die is configured to enable the mold core to enter and exit from the cavity from the cavity opening; the first positioning piece is provided with a pair of first positioning ends, the pair of first positioning ends are used for abutting against the two ends, in the first direction, of the to-be-bent plate located at the first bearing end, and the distance between the pair of first positioning ends can b