Molding drum

The invention provides an assembly drum which comprises a plurality of anti-package rods, and the first end of each anti-package rod is provided with an anti-package position located above a flat drum and an initial position located between a guide section and a first driving seat; and the second driving seat is movably arranged on the main shaft in a sleeving mode, the second end of the reverse wrapping rod is connected to the second driving seat in a pivoted mode, and the second driving seat moves in the axial direction of the main shaft. When the forming drum works, the expansion and contraction of the flat drum can be realized through the movement of the driving shaft, the tilting and recovery of the guide rod can be realized through the movement of the first driving seat, and the turn-up action of the turn-up rod can be completed through the matched movement of the second driving seat and the first driving seat, so that the turn-up of a steel ring by a material can be realized, the first driving seat, the second driving seat and the driving shaft can be controlled by adopting a servo motor, so that the gluing of a rubber material and the turn-up of a steel ring can be completed on one drum, the production efficiency is greatly improved, and the quality of an air spring is ensured.