Splicing device

The utility model discloses a splicing device, taking one of the splicing devices as an example, a plate comprises a plate main body, a plurality of covered channels arranged at intervals are arranged on a certain side wall of the plate main body, and the depth of each covered channel is smaller than 4/5 of the thickness of the plate main body. The covered channel is formed in the plate body and can correspond to the bending position of the bending machine, that is, the cutting edge of a corresponding bending knife on the bending machine can stretch into the corresponding covered channel, the cutting edge of the bending knife is limited by the position of the covered channel, and the situation that the bending knife slides can be reduced; and the depth of the covered channel is smaller than 4/5 of the thickness of the plate body, when the cutting edge of the bending cutter is pressed downwards to the covered channel, the plate body has a certain thickness, and the situation that the position, corresponding to