Pipe fitting bending and flattening mechanism and pipe fitting bending and flattening method

The invention relates to a pipe fitting bending and flattening mechanism and a pipe fitting bending and flattening method. The pipe fitting bending and flattening mechanism comprises a heating module and a forming module which are mutually independent. The heating module comprises a soft switch voltage regulation loop, an inversion loop, a high-frequency transformer, an induction coil and a resonance capacitor. The forming module comprises an upper mold plate block set and a lower mold plate block set, and a cavity for bending parts is formed between the upper mold plate block set and the lower mold plate block set. The upper mold plate block set comprises a first upper mold plate block, a second upper mold plate block and a third upper mold plate block which are mutually independent. The lower mold plate block set comprises a first lower mold plate block corresponding to the first upper mold plate block, a second lower mold plate block corresponding to the second upper mold plate block and a third lower mold