Jig for manufacturing gypsum casting mold

The utility model discloses a jig for manufacturing a gypsum casting mold, which comprises a support core and a vertical plate, the outer side of the support core is covered with a silica gel layer, the lower surface of the silica gel layer is of a cambered surface structure, a plurality of parallel raised strips are arranged on the cambered surface structure, and each raised strip is of an arc-shaped structure; a supporting plate is arranged above the silica gel layer, an open hole is formed in the supporting plate, one end of a vertical plate is fixed in the supporting core, and the other end of the vertical plate penetrates through the open hole and is vertically arranged upwards; a plurality of through holes are formed in the vertical plate, and adjusting rods are detachably installedin the through holes. The jig solves the problems that in the roasting and drying process of the gypsum casting mold, the thickness is not uniform, roasting is not thorough, fine cracks are generateddue to internal stress, an