| 摘要 |
PURPOSE:To provide a spinning frame, especially a drawing frame capable of unnecessitating the gear change in the change of drafting ratio and giving a desired drafting ratio, by using a controlling circuit to control the rotation of a feed roller pair and a front roller pair, wherein one of the pairs is rotated synchronously to the other keeping the ratio of the rotational speeds to a preset level. CONSTITUTION:The objective drawing frame is furnished with a feed roller pair 20, 20, a front roller pair 23, 23 to take up and transfer the sliver, the drivers 22, 24 to rotate the pairs, and a textile processing part 21 such as a gill box placed between the roller pairs. In the above machine, the driver is controlled by the controlling circuit 25 to synchronize the rotation of one of the roller pairs to that of the other pair while keeping the ratio of the rotational speeds constantly to a preset level. |
