Double-speed chain assembly line is usually called: self-flow conveying system Double-speed chain conveyor is mainly used for material transportation in assembly and processing production lines. Its conveying principle is to use the speed-up function of double-speed chain to make the tooling board supporting goods fast Running, stop at the corresponding operating position through the blocker; or complete the accumulation and release action and functions such as moving, indexing, and special line through corresponding instructions. Since the pallets used for transporting goods need to be used repeatedly, it is rarely used alone, but is matched with various special machines such as jacking translation machines, jacking indexers, etc. to form a horizontal or vertical circulation system. It uses a special, surface-treated extruded aluminum alloy profile as a guide rail, which makes the self-flow conveying system have very good stability and durability during the conveying process, and is suitable for mass continuous production of products. At the same time, the flexible and diversified design of the self-flow conveying system makes it have multi-functional characteristics.

Therefore, the double-speed assembly line is widely used in production lines in various electronic appliances, electromechanical and other industries. The most commonly used are: computer host, monitor, notebook assembly, air conditioner production, TV assembly and production, microwave oven assembly, printing, fax machine assembly, audio amplifier, engine assembly and other industries.