| 摘要 |
The machine is of the type consisting of a screw extruder actuated by a variable-speed DC motor, associated with a blowing unit with a horizontal shaft rotary mould distributor actuated by another variable speed DC motor provided with a tachometric dynamo. Each speed regulator has a speed control board with a fixed low voltage outlet to a potentiometer, from which a reference voltage signal returns to the control board. - The reference voltage signal from one board can opt. be connected to the potentiometer on the board for the other motor, where it enters beside the low voltage outlet. The speed control of both motors is then simultaneously dependent on operation of the potentiometer on the board of the first motor.
|
