Five-in-one hot covering machine for continuous two-time hot-pressing compounding

The invention provides a five-in-one hot covering machine capable of continuously and twice hot-pressing compounding. The five-in-one hot covering machine comprises a surface material automatic edge-aligning magnetic powder unwinding assembly, a middle material automatic edge-aligning magnetic powder unwinding assembly, a swing arm synchronizing device, a bottom material automatic edge-aligning magnetic powder unwinding assembly and a winding trolley which are sequentially arranged from right to left. The technological process of five-layer unwinding, opposite pressing of three sets of hot rollers, trimming, checking and winding is adopted, five layers of materials including the base material, the polytetrafluoroethylene microporous membrane, the base material, the polytetrafluoroethylene microporous membrane and the base material are formed in a composite mode at a time, energy is saved, and production efficiency is improved; the middle hot roller is respectively connected with the left hot roller and the ri