| 摘要 |
The present invention comprises a supporting block; a fixing part installed on the support block to support a roller to able to rotate; a movement supporting part installed on the supporting block to be able to move with a welding rod to overlay-weld the roller; a driving part to fix the fixing part and rotate the roller; and power transmission part to convert the power of the driving part into the linear movement of the movement supporting part to transmit. |
