Connecting rod tray positioning mechanism and automatic connecting rod feeding production line

The utility model belongs to the technical field of automatic assembly, and particularly relates to a connecting rod tray positioning mechanism and an automatic connecting rod feeding production line, and the connecting rod tray positioning mechanism is characterized by comprising a stopper, a guide cylinder, a lifting plate and a positioning pin arranged on the lifting plate; a positioning sleeve corresponding to the positioning pin is arranged on the lower end surface of the tray; linear bearings are arranged on two sides of the lower end surface of the tray; and after the tray is lifted by the guide cylinder, the linear bearing is separated from the line body conveying roller way. After the tray moves to a corresponding station, the lifting plate is lifted through the guide air cylinder, the positioning pin is inserted into the positioning sleeve to position the tray, and the lifting plate continues to ascend, so that the linear bearing is separated from the line body conveying roller way, and the influenc