Flexible cabin automatic welding line

The utility model discloses a flexible cabin automatic welding line which comprises a PLC control system, a conveying line, a transfer robot and a welding robot which are controlled by the PLC controlsystem, and further comprises a workpiece pre-positioning device which is used for storing cabin parts transferred from the conveying line and transmitting model data information to the PLC control system. Welding workbench, a conveying mechanism controlled by a PLC control system is arranged on the conveying mechanism; one end of the conveying mechanism is located within the working range of thewelding robot, a welding clamp storage table is arranged at the other end of the conveying mechanism, and a complete set of welding clamps arranged on the welding clamp storage table can be switchedbetween a preparation station and a working station right opposite to the welding workbench through the PLC control system. According to the welding device, the occupied area of the device can be greatly reduced, through reason