Installing structure for compound discs in inner covers

The invention provides an installing structure for compound discs in inner covers. Sealing structures can be rapidly compounded in the inner covers, and production efficiency is improved. The installing structure comprises a locking punch on the upper portion and a stamping lower cutter die on the lower portion. A raw material structure is flatly laid at the upper end of the stamping lower cutter die, multiple lower cutter openings are formed in the stamping lower cutter die. A corresponding upper cutter opening is formed over each lower cutter opening. The upper cutter openings are located above the raw material structure in an initial state, the top of each upper cutter opening is fixedly arranged at the lower end of the punch, a cover laying table is arranged below the stamping lower cutter die, a heating structure is arranged under the lower end face of the cover laying table and externally connected with a power structure through a wire, covers are flatly laid on the upper end face of the cover laying ta