The invention relates to the technical field of cutter devices, in particular to a cutter device for preparing stamp skins, which comprises a cutter mechanism comprising a first fixed transverse plate, a second sliding vertical plate, a second sliding transverse plate and a rectangular structure formed by the first sliding vertical plate, the bottoms of the first fixed transverse plate, the second sliding vertical plate, the second sliding transverse plate and the first sliding vertical plate are each fixedly provided with a triangular long cutter, and the four triangular long cutters conduct downward
cutting to obtain required stamp skins. The first driving mechanism enables the first fixed transverse plate, the second sliding vertical plate, the second sliding transverse plate and the first sliding vertical plate to form rectangular structures of various lengths and widths, and
cut stamp skins are collected in the rectangular structures; and the pushing mechanism pushes the collected stamp skins out, and the pushing mechanism pushes the four corners of the corresponding stamp skins in a self-adjusting mode. According to the device, the length and width of the
cut stamp
skin can be adjusted, and the position of the push plate for pushing the stamp
skin can be automatically adjusted, so that the collected stamp
skin is stably moved to a required position.