| 摘要 |
PURPOSE:The titled device capable at being integrated into an existing drawing frame, detecting weight of feed sliver passing through draft rollers by a specific method, and controlling an amount of draft by regulating a back roller by speed reduction. CONSTITUTION:The top roller 11t of the back roller 11 is provided with the electrically-conductive rubber layer 32, and weight of the feed sliver is detected as change in electric resistance caused by the elastic S1 deformation of the rubber layer. The signal adjusting circuit 22 to receive the electric signal 21, the comparator 24 to compare the output of the signal with the reference value 23 and to give deviation signal 25, the amplifier 26 and the control motor 27 are set, the output shaft of the control motor is connected to the regulating shaft 28C of the infinitely variable gear 28, and the number of revolutions of the output shaft 28b of the gear is changed. |
