Grid drawing device for integrated painting and calligraphy table

The invention relates to a grid drawing device for an integrated intelligent painting and calligraphy table. The device comprises a supporting structure and a lamp box, and the supporting structure is used for supporting the lamp box and is fixedly arranged in the edge of the painting and calligraphy table. The supporting structure comprises an outer column, an inner column and a driving mechanism. A guide rail device is arranged on one side of the outer column and used for lifting the outer column, an outer rack is arranged on the surface, corresponding to the guide rail device, of the outer column, and a strip-shaped groove is formed along the outer rack. Guide rails and inner teeth are arranged on the two sides of the inner column corresponding to the outer column respectively, a sliding block is fixed to the inner wall of one end of the outer column and used for lifting of the inner column, and an inner rack is arranged on the side, corresponding to the strip-shaped groove of the outer column, of the inne