Welding insert assembling device and method for electric connector welding

The invention relates to technical field of electronic component production, and discloses a welding insert assembling device and method for electric connector welding. The device comprises an assembling bracket, an assembling connecting assembly, an assembling driving motor, an assembling transmission wheel group, an assembling rotating shaft, an upper rotating shaft, a lower rotating shaft and aback-and-forth moving assembly; the assembling bracket is arranged on a machine frame; the assembling connecting assembly is arranged at the front part of the assembling bracket; a feeding end of theassembling connecting assembly is connected with a discharging end of a first plug pin conveying device; the assembling driving motor is arranged at the rear part of the assembling bracket; the assembling rotating shaft is transversely arranged in the middle of the assembling bracket through a bearing; the right end of the assembling rotating shaft is connected with the assembling driving motor through the assembling tran