Tin soldering machine

The utility model relates to the technical field of tin soldering, in particular to a tin soldering machine which comprises a machine frame, a rotating disc device capable of rotating in a stepping mode is arranged on the machine frame, a plurality of tool assemblies in central symmetry are arranged on the periphery of the rotating disc device, and the tool assemblies rotate along with the rotating disc device and are used for clamping and transferring relays. A feeding device, a rosin pre-bending device, a tin furnace device, a bending device, a testing and screening device and a discharging device are sequentially arranged on the portion, located on the outer side of the rotary disc device, of the rack. The discharging device is provided with a linear guide rail, the linear guide rail extends outwards from the bottom of the rotary disc device, and a discharging transfer mechanism is arranged at the outer side end of the linear guide rail, so that a discharging station of materials is far away from the rotar