Arc section forming equipment

The utility model relates to arc section forming equipment which comprises a machine frame with a working table top, an arc-shaped positioning block is arranged on the working table top, sliding rails are arranged on the front side and the rear side of the arc-shaped positioning block, arc forming sliding blocks are arranged on the sliding rails and the left side and the right side of the arc-shaped positioning block respectively, and an arc-shaped groove is formed in the side, close to the arc-shaped positioning block, of the middle of each arc forming sliding block. Air cylinders are arranged on the outer sides of the arc forming sliding blocks, the air cylinders drive the oppositely-arranged arc forming sliding blocks to move oppositely along the sliding rails, the front ends of the two arc forming sliding blocks make contact to form an enclosure, the enclosure is formed by combining two arc-shaped grooves, and the face where the enclosure is located is just filled with the arc-shaped positioning blocks; a