Integrated quick roll changing device for high-speed bar production line

The invention provides an integrated quick roll changing device for a high-speed bar production line, and aims to solve the problem that in the prior art, the amount of labor for changing movements islarge. The integrated quick roll changing device comprises a bottom rail, a sliding car, a transport car, a second driving piece and an automatic unhooking mechanism, wherein the bottom rail is parallelly arranged in a rolling direction; the sliding car can be driven by a first driving piece and does reciprocating motion on the bottom rail; the transport car is used for loading new and old movements; the second driving piece of a fixed structure is used for pushing or pulling the transport car; and the automatic unhooking mechanism is used for connecting the second driving piece with the transport car. When the old movements are replaced with the new movements, collaborative operation of multiple workstations on the production line can be achieved; through the design of the automatic unhooking mechanism, automati