| 摘要 |
PURPOSE:To achieve the improvement of fold accuracy and the damage protection of machine by always keeping the regulted rotational frequency, by regulating the upper limit of motor rotational frequency with the opening or shutting of switch opened or shutted by the movement of member changed to change the class of fold. CONSTITUTION:When the button for increasing velocity is continuously pushed to carry out the parallel one fold under the condition where the motor is rotated at the minimum rotational frequency, A contact DU is closed by the action of relay DU. Then, the variable resistor VM for setting velocity is rotated by the revolution of auxiliary motor SM and the velocity is increased by the change of the voltage difference to the amplifier of thyristor Leonard regulating system. Further, because the maximum limit setting switch LS max is opened by the cam equipped at the auxiliary motor SM, A contact DU is opened by the opening of power application to the relay DU, the auxiliary motor SM being stopped and the speed does not increase to not less than the maximum velocity. |
