Adjustable mold device applied to arched masonry system

The invention discloses an adjustable mold device applied to an arched masonry system, and relates to the technical field of buildings. The device comprises a workbench which is horizontally arranged; the lower surface of the workbench is connected with two pairs of vertically-arranged adjustable supporting seats side by side. A sliding groove is formed in the lower surface of the workbench. A containing hole is formed in the upper surface of the workbench in a penetrating mode. The containing hole is formed in one end of the sliding groove. Tough battens are inserted into the accommodating holes in a sliding manner; one end of each tough batten is rotationally connected to the upper surface of the workbench; one end of the tough batten is arranged above the other end of the sliding groove; the other end of the tough batten is rotationally connected with a sliding block; the sliding block is slidably connected into the sliding groove. An arc-shaped frame is vertically fixed to the upper surface of the workben