Groove type self-aligning roller is mainly on the basis of TD75 selection guide, the 3 groove shaped roller and 2 small vertical roller is arranged on the upper beam, a lower beam are connected on the middle rack, an upper beam and a lower beam through the rotary shaft linked together. When the tape to the side of the deviation, the tape edge to the vertical roll, in under the action of lateral forces, drives the upper beam around the rotary shaft to rotate an angle, the deviation side idler generated forward, this time aligning roller applied to lateral thrust belt, prompting the belt deviation after the automatic return to the in situ, the realization of automatic rectifying deviation adhesive tape, adhesive tape to ensure operation.

Its advantages are: when the deviation when the quantity is little, the roller rotation angle smaller deviation side facing the lateral thrust belt is also relatively small; when the deviation is large, the angle of deviation side supporting roll rotation of the larger, lateral thrust on the tape also produced a greater. So, as to realize the automatic adjustment of different feed. Blocking another role of partial vertical roll, but also in the deviation of serious cases, direct stop and limit the belt deviation, a common role in aligning roller, urges the tape gradually to the operation, will not produce the phenomenon of tape ran out of frame.

Its disadvantages are: general belt deviation range is not too large, the available slot type deviation adjusting supporting roller automatic regulation. But as the beam intensity is weak, in large volume will appear on the beam bending, deformation phenomenon, affecting automatic provocative effect; in addition, the rotating shaft and the base adopts a gap sliding fit, bearing is not installed, the friction resistance is large, plus the invasion of dust, magazine, prone to jamming, rust surface causes the rotating not flexible. Vertical roll will damage the tape edge.