| 摘要 |
A return roller according to the present invention comprises multiple ring flanges surrounding a steel plate of the return roller in the longitudinal direction of a drum of the return roller; and multiple rod shafts fixed to a space between two adjacent ring flanges among the multiple ring flanges by connecting the two adjacent ring flanges to each other. The multiple ring flanges can be arranged at regular intervals in the longitudinal direction of the return roller or can be variably arranged at large intervals around both ends of the return roller and at small intervals around the center of the return roller. The rod shafts can be aligned in the longitudinal direction of the return roller or can be variably arranged by each ring flange. |
