| 摘要 |
A paint toning machine comprising a container (11, 12) for storing each paint to be fed, such as toning paste or paint, a piston pump (3, 4) arranged in flow communication with the paint in the container for feeding the paint, and driving means (2, 5-10), driven by a servomotor, for driving the piston pump. In the invention, the driving means comprise a device (10) for changing the rotary motion of the shaft (5) driven by the servomotor in different directions of rotation into linear motion moving the piston rod (7) of the piston pump in opposite directions, and a coupling (8, 9) for selectively coupling the piston rod (7) of the piston pump and the shaft (5) driven by the servomotor (2) into engagement via said changing device (10).
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