The elevator car bottom and car top automatic production line significantly improves production efficiency by adopting fully automatic intelligent technology. This production line usually includes multiple stations such as loading, assembly, transmission, and pasting. The stations are closely connected, which saves the time of operators to carry materials, thereby improving production efficiency. Specifically, some advanced production lines are also equipped with intelligent sales and design integration platforms, product design and development software, enterprise management systems, and MES systems, which have realized information collaboration and intercommunication of a series of software such as workshop management, quality management, equipment maintenance management, warehouse management, and transportation management, and have increased production efficiency by at least 5 times. In addition, there are production lines for automatic welding of elevator car bottoms, which realize the automation of elevator car bottom welding by setting positioning cylinders, backings, and positioning pins, reducing labor intensity and improving production efficiency and welding accuracy.