Automatic-stop interlocking device of tray type coating flow line

The utility model provides an automatic-stop interlocking device of a tray type coating flow line. The automatic-stop interlocking device comprises a control structure and a locking structure, wherein the locking structure is connected with a transmission chain below a tray in a matching manner, and the control structure is used for controlling the locking structure to realize the travelling or stopping of the tray. The automatic-stop interlocking device is characterized in that the control structure comprises a travel switch, an electromagnetic reversing valve, an air cylinder and an articulation piece, wherein the travel switch is electrically connected with the electromagnetic reversing valve which is connected with an air cylinder and is reversed to realize the stretching and retraction movement of a piston rod of the air cylinder, an upper end of the piston rod of the air cylinder is connected with one end of the articulation piece, the other end of the articulation piece is connected with the locking st