Screen exposure machine with oversized table top

The utility model relates to a screen exposure machine with an oversized table top, which comprises a lower die holder, an upper frame and an operation panel, the rear side of the lower die holder is rotatably connected with the rear side of the upper frame through a hinge, and the front side of the lower die holder is provided with a frame locking assembly connected with the front side of the upper frame. Opening and closing assemblies connected with the upper frame are arranged on the left side and the right side of the lower die holder, a table top vacuumizing piece and an LED lamp source transferring assembly are arranged in the lower die holder, exposure glass connected with the lower die holder is arranged on the upper side of the LED lamp source transferring assembly, a table top is arranged on the upper frame, and the table top is made of rubber cloth. According to the exposure device, an air cylinder switch frame structure is used, an LED scanning light source structure is supplemented, the exposure