| CPC B23K 37/047 (2013.01) [B21D 53/88 (2013.01); B23K 37/0211 (2013.01); B62D 25/20 (2013.01); B23K 2101/006 (2018.08)] | 15 Claims | 

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               1. A production line for welding automotive rear floor panels, comprising: 
            a conveying assembly, comprising a fixture running along a rounded rectangular trajectory, wherein the rounded rectangular trajectory is divided into four straight paths along a running direction, and the fixture is provided with a clamping part to carry a workpiece; 
                a working device, comprising a loading and unloading station, a gluing station, a welding station, and a detection station corresponding to the four straight paths; wherein the welding station comprises at least three welding mechanisms, a first welding mechanism is capable of acting on an end of the workpiece at the gluing station, and a second welding mechanism is capable of acting on the end of the workpiece at the detection station. 
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