The utility model relates to a mechanical device of a cloth settling machine, in particular to a mechanical device of a cloth settling machine capable of dragging and folding cloth. The mechanical device is characterized in that a gearbox is connected with a motor, and a cloth pressing block shaft and a cloth supporting pipe are arranged on a poking rod support. An end-A cloth pressing block is fixed on the poking rod support, and a three-claw poking rod, a speed adjusting braking motor, a linear gear, a rolling gear, a left moving pressing block and a right moving pressing block are fixed on a double-layer iron plate back-and-forth base with an opening. The three-claw poking rod is connected with the linear gear, the speed adjusting braking motor is connected with the linear gear, the rolling gear is connected with the linear gear, and a locating base is connected with a cutting plate. An end-B limiting switch, an end-B cloth pressing block and an end-B nail are arranged on the locating base, a chain is wound on chain gears at the end A and the end B and connected with the double-layer iron plate back-and-forth base with the opening, a gear in the gearbox is connected with the chain gear at the end A, a gear in the braking motor is connected with the chain gear at the end B, and an end-A limiting switch is fixed on the poking rod support. By means of the technical scheme, the mechanical device has the advantage of being even in pulling force, smooth in folding, controllable in folding size and quantity and high in controlling precision.