Taper aligning idler is mainly based on DTII selection guide, the 2 tapered sticks are respectively installed on the rotary frame on their respective, tapered stick installation, big in the middle, small head on the outside, 2 rotary frame through the connecting rod mechanism to realize the synchronous rotation, the beam is directly connected to the middle frame. Because both ends of the tapered sticks with different diameters, the rotating roller, roller angle velocity generated the same cone diameter in different line speed. According to the relationship between angular velocity and linear velocity, in certain angular velocity, linear velocity and radius is proportional, therefore, in the tapered stick, high line speed, small cutting velocity of small, in a stick on the existence of the linear velocity difference. When the rubber belt, adhesive tape on small end in contact with the roller, because the small line speed to produce an additional drag roller and belt, to drive the rotating frame around the rotary shaft to rotate a certain angle, forming roller group produced by applying a lateral thrust to the tape, prompting the belt deviation after in situ recovery, so as to realize the automatic correction the deviation of tape, to ensure that the tape to run.

Its advantages are: the trough type roller changed into the tapered sticks, using the line speed roller rotary frame job generates a forward force, and change the stress state of roller, lateral thrust generated to increase after the belt deviation, self-aligning effect is more obvious.

The drawback is: because of the taper aligning idler 2 rotary shaft is separated, 2 rotary frame to realize the linkage synchronous, since the intermediate coupling parts more, many factors with manufacturing, installation, affected the synchronous operation flexibility, synchronous effect is not ideal, it will affect the self-aligning effect.