 first paper tube just can play the effect stoping paper tube to move ahead, and multiple like this paper tube treats that used time arrangement is compact, and it is stand-by that paper tube arrives assigned address.After spool puts in place, when starting to wear paper tube, limited post falls, and paper tube is installed to the assigned address of spool under belt conveyor with the double action dialling hand, improves the efficiency of wearing paper tube. Baffle plate can prevent the device of paper tube from being dropped the position excessively on paper tube, increases equipment dependability. 