| 摘要 |
The present invention relates to an auxiliary returning roller unit which comprises a supporting plate member which has a pair of supporting pieces capable of being combined to the outer circumference of a supporting shaft and being separated and attached in a symmetrical shape on the supporting shaft; and a pair of returning rollers which is installed to be detachable from the supporting shaft in order to closely support both sides of the supporting plate member. The returning roller comprises a pair of roller bodies which has a symmetrical semicircular shape in order to be combined with each other by surrounding the supporting shaft and has combination units on both ends respectively; a coupling member which is to combine the combination units of the pair of roller bodies being in contact with each other; and a fixing member which is to fix the position of the roller body to the supporting shaft. |
