Board splitting jig

The utility model belongs to the technical field of automatic machining, and provides a plate splitting jig which comprises a bottom die, a cover plate and a supporting plate. The cover plate covers the bottom die, and the cover plate is provided with through holes corresponding to the connecting ribs between the workpieces in position; the supporting plate is arranged between the bottom die and the cover plate, the supporting plate is provided with a plurality of bearing pieces for bearing all workpieces, and the bearing pieces are connected in series into a whole to form a bearing unit; the supporting plate is provided with two or more sets of bearing units arranged side by side, and isolation gaps are formed between the bearing units and correspond to the projection positions of the through holes. The board splitting jig does not need to be repeatedly assembled and disassembled, operation is easy, the production efficiency of the board splitting jig is improved, and due to the fact that the board splitting